ZL50轮式装载机工作装置设计含7张CAD图
ZL50轮式装载机工作装置设计含7张CAD图,zl50,轮式,装载,机工,装置,设计,cad
ZL50轮式装载机工作装置设计含7张CAD图需要咨询购买全套设计请加QQ1459919609-图纸预览详情如下:ZL50轮式装载机工作装置设计任务书.docZL50轮式装载机工作装置设计开题报告.docZL50轮式装载机工作装置设计说明书.doc外文翻译摇臂a1.dwg文件清单.txt活塞-A3.dwg活塞杆-A3.dwg液压缸-动臂-A1.dwg液压缸-摇臂A1.dwg装载机工作装置-A0.dwg设计副本连杆-A2.dwgZL50轮式装载机工作装置设计 Design of working device of ZL50 wheel loader摘 要装载机是一种在各种工程中都收到了广泛的应用的集铲土,运输为一体的机械,当装载机进行作业的时候,工作装置在机器的运动的带动下进行装载作业,以及提升作业,运输作业和卸载作业。装载机具有在作业速度,效率,机动性,操作性等方面相对于其他作业机械的优势,对于加快工程建设速度,减轻劳动强度,降低工程本有 的作用, 为了 机械 工中的 要装 。装载机在在工程机械中的用 以 是 的广泛,在工程中 以用 情, 如铲装 运 和卸载 , 装 的对方 的时候, 以用 对他进行 作业,在作业中 以轻度 土。currency1外,面 时,“面 以 到,当其他机械的运动需要时, 以用 对其进行作业。对一其他用 ,fi如fl 了方装的设 , 以 fl 其他的任务,如 运,等。”设计用进的 设计方 ,对”种轮式装载机工作装置进行了体设计到 件设计。要轮式装载机工作装置的 件,如铲 连杆机以及 缸 升缸等, 对 要 件进行了度 强度 。: 装载机 机械 工作装置AbstractThe loader is a kind of in various projects have received wide application in soil shovel, transportation as one of the machinery, when the operation of the loader, working device for loading operation in the movement of the machine drive, and improve the operation, transportation and unloading operations. The loader has the operating speed, efficiency, flexibility, relative to other operating machinery operation advantage and so on, to speed up the construction speed and reduce labor intensity, has a significant role to reduce the project cost, which has become the important equipment in the construction of a modern mechanized.Loading machine in use in engineering machinery is very extensive, in engineering can be used to do a lot of things, such as loading cargo, cargo handling and unloading of goods, when other bulk material not neat, can also be used for their smooth operation, the operation can also dig in mild rock mining and hard soil. In addition, when the ground is rough, scraping the ground can also be done, and when other mechanical movements need traction, it can also be used for traction operations. For some other purposes, if you replace the equipment in front of the assembly, you can finish more of the other tasks, suchas handling timber, steel pipes and so on.The design uses advanced modern design methods, the wheel loader working device for the overall design of the parts design. It mainly includes the key components of the wheel loader, such as bucket, connecting rod mechanism, bucketcylinder, lifting cylinder, etc. the stiffness and strength of the important parts are analyzed.Key words: loader; mechanization; working device1. 11.1 轮式装载机 11.1.1 装载机 11.1.2 装载机的用 11.2 轮式装载机应用 11.2.1 外轮式装载机 11.2.2 轮式装载机 22 装载机工作装置体设计 32.1 工作装置的体 置 32.2 工作装置连杆机的 式 42.3 工作装置 度的计 52.4 工作装置体设计53 ZL50 装载机工作装置设计 53.1 工作装置的设计要 53.1.1 工作装置工作性53.1.2 对工作装置的要 53.2 铲设计 63.2.1 铲的 式 63.2.2 铲的 73.2.3 铲面 和本 73.2.4 铲 的计 103.3 工作装置连杆 设计 113.3.1 机 113.3.2 设计123.3 连杆 运动 163.4 工作装置 及强度 204 液压缸设计 253.5.1 液压缸的和 253.5.2 液压缸本 设计 25文 2930用于设置和放置装载机的工具的工具载体以及设置和放置工具的方法本发明公开了一种工具载体,其具有复杂程度低、部件多样性低、可靠性高的锁定装置。通过完全自动化的锁紧过程,工具架上的工具的设置大大简化了操作者或司机,因为既不离开机舱,以锁定工具。在工具设置过程中由工具启动和保持装置的驱动确保锁止装置仅在安装工具时使用。有效地避免了由于振动或由刀架或前装载机的移动而使锁进入锁定位置而不设置工具的错误运动。本发明的声明:1工具包括:锁工具载体包括上横撑和下交叉支撑的至少一个档板连接和至少一个支撑板,其中至少有一个轮廓板和至少一个支撑板接合和锁定工具包括紧固凸耳的刀具夹持区之间的区域;包括手动运行的锁从锁定位置向解锁位置和第一导向、锁定部分连接到一个第二导向、锁定部分手柄锁,其中第二导向、锁定部分包括弹簧连接到一个磁盘用于接合刀架和鞋跟;和设置夹持装置支持的工具载体包括:唱一首旋转杆连接到一个第二旋转杆围绕旋转轴和弹簧连接到工具载体和第一旋转杆,其中第一旋转杠杆进一步包括端接合工具的紧固凸耳和第二旋转杠杆进一步包括端接合的脚跟,保持在打开位置锁定2声明 1 中的工具锁,其中,第二旋转杠杆进一步包括一个配置成从事脚跟,以保持在解锁位置锁的结束。3声明 1 中的工具锁,其中至少一个配置板和至少一个支撑板进一步包括用于引导锁的钻孔。4声明 1 的工具锁,其中至少一个配置板和至少一个支撑板之间的区域限定了用于接合和锁定工具的工具保持区。5声明 1 的工具锁,其中手柄还包括连接在一端上的两个连接到另一端的连接板的两条腿。6声明 5 的工具锁,其中第二引导和锁定部分通过连接板中的钻孔延伸形成两条腿中的一个。7声明 6 的工具锁,其中第一个指导和锁定部分连接的连接板的对面两条腿。8声明 1 的工具锁,其中第一个旋转杆进一步包括结束由工具激活锁进入锁定的位置。9自动锁定一个工具一个装载机的方法包括:将一个句柄锁的地方设置和设备支持刀架在一扇不加锁的位置,操纵工具载体进行悬钩子的工具包括一个紧固接头;进一步操纵刀架,紧固接线片与设置和夹具进行交互,这样锁保护工具的刀架在锁定位置,其中锁包含第一次指导和锁定部分连接到第二个指导和锁定部分,其中第二指导和锁定部分由一个弹簧连接到一个磁盘从事刀架和脚跟保持锁锁的位置;在设置和夹具由第一旋转杆连接到第二个旋转杆的转动轴和一个弹簧耦合刀架框架和第一个旋转杆;其中紧固接头与结束的第一旋转杆旋转第一旋转杆的转动轴从而第二旋转杆旋转,进而释放跟刀架的工具。10声明的方法,其中刀架由刀架框架包括一个横拉条上部和更低的肋板连接的至少一个侧面板和至少一个支撑板。描述:技术领域刀架(18)披露本有一个锁紧装置(46)与低程度的复杂性,多样性较低的部分,和高度的可靠性。通过完全自动锁定过程,工具的设置(21)刀架(18)是大大简化运算符或司机,因为再没有离开小屋为了锁工具。的驱动设置和夹具(50)的工具(21)的设置工具(21)确保锁紧装置(46)只有一个工具(21)也成立。错误的运动的锁紧装置锁定位置由于震动或刀架的运动(18)或前端装载机(14)没有设置工具有效地避免。背景方法以装备加载车辆或加载器,特别是农业拖拉机、装载机使用但也施工车辆如轮式装载机或伸缩装载机用不同的工具。因此,例如,可以使用叉车,长矛,触手,或独家新闻作为加载工具。所谓的工具通常是连接到工具运营商或由他们提供相应的设备。工具运营商从而通常坚决与摆臂的前端或装载汽车的热潮,其中控股设备,构建工具载体,是一个接口的工具,使工具,一方面,可互换或可替换的,然而,另一方面与刀架也被连接在一个适当的担保方式。控股设备从而通常有工具持有人建立了相应的工具和一个锁的工具是刀架锁后,已经成立。这样的锁定装置从艺术的状态,作为一个规则,繁琐的和昂贵的。针对这一点,提出一个解决方案的根本目标是用一个简单和低成本的锁定装置,是一种选择,由刀架的艺术的状态。总结刀架披露的锁有一个锁紧装置和一个低程度的复杂性,多样性较低的部分,和高度的可靠性。工具的自动设置的刀架是大大简化运算符或司机,因为再没有离开小屋为了锁工具。这意味着节省时间。锁紧装置的结构简单,便于安装部分的低多样性的生产,从而也有助于减少成本。建立并控股的驱动设备的工具的设置工具确保激活锁只有一个工具也是成立的。锁定其锁定位置的错误运动由于震动或运动的刀架或前端装载机没有设置工具有效地避免。锁可以通过处理位于刀架或一侧向外延伸的载体工具。拉着把手,锁可以移动的锁定位置。通过随后的轻微的处理,然后进入解锁位置处理,支持锁上刀架框架。锁可以横向拉伸弹簧。弹簧可以,例如,被设计为一个螺旋弹簧锁的杆状区域支持。螺旋弹簧是最好支持一边,反对停止固定锁,另一方面,对刀架框架,这锁的横向运动(即运动的锁刀架的一侧),螺旋弹簧被压缩和预紧力是生成的。螺旋弹簧和停止设计和坐落在这样一种螺旋弹簧没有借口在锁定位置,或只有一个最小的一个,它的最大骄傲在开启的位置。锁紧装置可以形成以这样一种方式,在处理方面,它有一个设置和持有部分和第一次指导和锁定部分面向并行。为此,锁杆部分处理方面是面向彼此平行,彼此相连,通过交联,在结束处理,维护在一个特定的距离。此外,边处理,锁有一个第二指导和锁定部分对齐横向第一指导和锁定部分。锁可以,例如,形成以这样一种方式建立和持有部分的处理有相应的弯曲过程结束,因为它继续刀架的相反,这两个开放的锁共同指向一个方向,是一致的。设置和设备包括第一旋转杆和第二个旋转杆,这是支持一个共同的轴旋转,所以相对于另一个是不动的,其中第一和第二旋转杠杆可以通过一种工具旋转。设置和设备是由两个旋转杠杆扩展形成的相应的轴旋转,在旋转轴支撑在一个较低的连接网站工具在刀架框架或紧固接线片在这一领域,形成的工具,通过它锁推为了与刀架框架,突出或项目。例如,一个旋转杆可以作为一种触发,可以偏转或激活,因此旋转紧固接头凸入工具框架当工具设置。由此产生的转动轴的旋转运动相应转移到第二旋转杆,这样第二旋转杆与设置和持有的锁。第一旋转杆从而配备比第二旋转杆长力臂,自前必须扩展到指导和锁的锁,紧固接线片的工具是锁定的设置后进行的;另一方面,第二个旋转杆只延伸到设置和持有的锁,这是位于靠近转动轴。此外,弹簧是提供与刀架框架,最好,与扶轮杠杆之一。在这里,也可以使用一个弹簧与转动轴连接。至关重要的是,一个弹簧的借口被创建在偏转的第一旋转杆紧固接线片,所以当删除紧固接线片的接触面积,设置和设备(第一和第二旋转杠杆)法案,要求下,对建立和持有的锁,或者与自负。上述类型的刀架是特别适合使用在装载机,如前端装载机、轮式装载机、,特别是频繁变化的工具,不同的加载任务是必需的。建立一个相应的方法和工具放置工具持有人装载机规定一个刀架组成一个刀架框架和一个锁紧装置位于工具载体,与一个工具被锁定或将被锁定在刀架横向移动锁。锁移动,放置的工具,从锁定位置横向弹簧拉伸锁定位置,支持锁上刀架框架或者是停止,在锁紧装置由设置和设备上面所提到的,被带到一个弹簧预张的位置在工具的设置在刀架上。期间将解锁工具的工具载体,建立并控股设备发布的紧固接线片的工具,以便建立和保持设备在要求行动起来反对然后释放锁和锁解锁位置支持刀架框架的建立和保持设备的弹簧力作用。在这种交互,建立和保持设备承担控股地位和锁从解锁位置成横向弹簧拉伸前锁定位置。在这个前锁定位置,锁不再支持,和之前一样,刀架框架上,而是在设置和设备。重新设置的一个工具,建立并保持设备再次紧固接头构造偏转的控股地位的工具,把前面提到的,弹簧拉伸位置。自锁,与此同时,在其锁定位置,支持建立和保持设备在开启位置,而不是在刀架坐标系,建立并控股的控股功能设备取消,释放锁,以便释放锁带来的 pre-locking 横向弹簧力的位置到锁定位置。借助绘画的例子显示了一个体现的发明,发明和其他优势和有利的改进和发展的发明更详细地描述和解释如下。Tool carrier for setting and placing tools for loaders, and method for setting and placing toolsThe invention claimed is:1. A tool lock comprising: a tool carrier comprising an upper cross brace and a lower cross brace connected by at least one profile plate and at least one support plate, wherein the area between the at least one profile plate and the at least one support plate define a tool holding area for engaging and locking a tool comprising a fastening lug; a lock comprising a handle for the manual movement of the lock from the locked position to the unlocked position and a first guiding and locking section connected to a second guiding and locking section, wherein the second guiding and locking section comprises a spring connected to a disk for engaging the tool carrier and a heel; and a setting up and holding device supported on the tool carrier comprising a first rotary lever connected to a second rotary lever about a rotation axle and a spring coupled to the tool carrier and to the first rotary lever, wherein the first rotary lever further comprises an end configured to engage the fastening lug of the tool and the second rotary lever further comprises an end configured to engage the heel so as to maintain the lock in an unlocked position. 2. The tool lock of claim 1, wherein the second rotary lever further comprises an end configured to engage the heel so as to maintain the lock in an unlocked position. 3. The tool lock of claim 1, wherein the at least one profile plate and the at least one support plate each further comprise a borehole for guiding the lock. 4. The tool lock of claim 1, wherein the area between the at least one profile plate and the at least one support plate define a tool holding area for engaging and locking a tool. 5. The tool lock of claim 1, wherein the handle further comprises two legs connected to a crosslink on one end and connected to a connecting plate on the other end. 6. The tool lock of claim 5, wherein the second guiding and locking section extends through a borehole in a connecting plate to form one of the two legs. 7. The tool lock of claim 6, wherein the first guiding and locking section is connected on the opposite side of the connecting plate from the two legs. 8. The tool lock of claim 1, wherein the first rotary lever further comprises an end activated by the tool to move lock into the locked position. 9. A method for automatically locking a tool to a loader comprising: pulling a handle of a lock to place a setting up and holding device supported on a tool carrier in an unlocked position; maneuvering the tool carrier to engage a suspension hook of a tool comprising a fastening lug; further maneuvering the tool carrier so that the fastening lug interacts with the setting up and holding device such that the lock secures the tool to the tool carrier in a locked position; wherein the lock comprises a first guiding and locking section connected to a second guiding and locking section, wherein the second guiding and locking section comprises a spring connected to a disk for engaging the tool carrier and a heel to maintain the lock in a locked position; wherein the setting up and holding device comprises a first rotary lever connected to a second rotary lever about a rotation axle and a spring coupled to the tool carrier frame and to the first rotary lever; wherein the fastening lug interacts with an end of the first rotary lever to rotate the first rotary lever about the rotation axle thereby rotating the second rotary lever and in turn releasing the heel to secure the tool to the tool carrier. 10. The method of claim 9, wherein the tool carrier comprises a tool carrier frame including an upper cross brace and a lower cross brace connected by at least one profile plate and at least one support plate. Description:TECHNICAL FIELDThe tool carrier (18) disclosed herein has a locking device (46) with a low degree of complexity, a low diversity of parts, and a high degree of reliability. By means of the completely automated locking process, the setting up of the tool (21) on the tool carrier (18) is considerably simplified for the operator or the driver, since neither has to leave the cabin any longer in order to lock the tool. The actuation of the setting up and holding device (50) by the tool (21) during the setting up of the tool (21) ensures that the locking device (46) is used only if a tool (21) is also set up. An erroneous movement of the locking device into its locking position due to vibrations or by a movement of the tool carrier (18) or the front loader (14) without a set-up tool is effectively avoided.BACKGROUNDMethods are known for equipping loading vehicles or loaders, in particular, front loaders for use on agricultural tractors, but also construction vehicles such as wheeled loaders or also telescopic loaders with different tools. Thus, for example, it is possible to use forklifts, lances, grippers, or scoops as loading tools. The tools are usually connected to so-called tool carriers or held by them with corresponding holding devices. The tool carriers are thereby usually firmly connected with the front end of the swing arm or the boom of the loading vehicle, wherein the holding devices, constructed on the tool carriers, are an interface to the tool and make it possible for the tools, on the one hand, to be interchangeable or replaceable and, on the other hand however, to be connected also with the tool carrier in an appropriately secured manner. The holding devices thereby usually have tool holders on which the corresponding tool is set up and a lock with which the tool is locked on the tool carrier after it has been set up. Such locking devices known from the state of the art are, as a rule, cumbersome and expensive.In view of this, the fundamental goal is to propose a solution with a simple and low-cost locking device that is an alternative to that given by the state of the art for a tool carrier.SUMMARYThe lock for a tool carrier disclosed here has a locking device with a low degree of complexity, a low diversity of parts, and a high degree of reliability. The automated setting up of the tool on the tool carrier is considerably simplified for the operator or the driver, since neither has to leave the cabin any longer in order to lock the tool. This means a savings in time. The simple structure of the locking device and the low diversity of parts facilitate the installation in production and thus contribute also to the reduction of costs. The actuation of the setting up and holding devices by the tool during the setting up of the tool ensures that the lock is activated only if a tool is also set up. An erroneous movement of the lock into its locking position due to vibrations or by a movement of the tool carrier or the front loader without a set-up tool is effectively avoided.The lock can be accessible via a handle which is located on the tool carrier or which extends outwards on one side of the tool carrier. By pulling on the handle, the lock can be moved out of its locking position. By a subsequent slight turning of the handle, the handle is then brought into its unlocking position, in which the lock is supported on the tool carrier frame.The lock can be pre-tensioned transversely with a spring. The spring can, for example, be designed as a coil spring which is supported on a rod-shaped area of the lock. The coil spring is preferably supported on one side, against a stop fixed on the lock, and on the other side, against the tool carrier frame, so that with a transversal movement of the lock (that is, with a movement of the lock to one side of the tool carrier), the coil spring is compressed and a pretension force is generated. The coil spring and the stop are designed and situated in such a way that the coil spring does not have a pretension in the locking position, or has only a minimal one, and has its maximum pretension in the unlocking position.The locking device can be formed in such a way that on the handle side, it has a setting up and holding section and a first guiding and locking section oriented parallel to it. To this end, the lock can have rod sections on the handle side which are oriented parallel to one another and which are connected with one another, via a crosslink, on the ends on the handle side and are maintained at a specific distance to one another.Furthermore, on the side opposite to the handle, the lock has a second guiding and locking section which aligns transversely to the first guiding and locking section. The lock can, for example, be formed in such a way that the setting up and holding section on the handle end has a correspondingly bent course, as it proceeds to the opposite of the tool carrier, so that the two open ends of the lock jointly point in one direction and are aligned with one another.The setting up and holding devices comprise a first rotary lever and a second rotary lever, which are supported on a common rotation axle, so as to be nonrotatable relative to one another, wherein the first and second rotary levers can be swiveled by engaging a tool. The setting up and holding devices are accordingly formed by two rotary levers which extend from a rotation axle, wherein the rotation axle is supported in the area of a lower connection site for the tool on the tool carrier frame or in an area in which a fastening lug, which is formed on the tool and through which the lock is pushed in order to connect with the tool carrier frame, protrudes or projects. For example, one rotary lever can function as a kind of trigger and can be deflected or activated and thus swiveled by the fastening lug protruding into the tool frame when the tool is set up. The resulting rotary movement of the rotation axle is correspondingly transferred to the second rotary lever so that the second rotary lever engages with the setting up and holding section of the lock. The first rotary lever is thereby equipped with a longer lever arm than the second rotary lever, since the former must extend into the guiding and locking section of the lock, with which the fastening lug of the tool is locked after the setting up is carried out; on the other hand, the second rotary lever extends only to the setting up and holding section of the lock, which is located closer to the rotation axle.In addition, a spring is provided which is connected with the tool carrier frame and preferably, with one of the rotary levers. Here, it is also possible to use a spring that is connected with the rotation axle. It is essential that a spring pretension be created during a deflection of the first rotary lever by the fastening lug, so that when the fastening lug is removed from the engagement area, the setting up and holding devices (first and second rotary levers) act, under pretension, against the setting up and holding section of the lock or engage with it under pretension.The tool holder of the type described above is particularly suitable for use on a loader, such as a front loader or a wheeled loader, in which, in particular, a frequent changing of the tool for different loading tasks is required.A corresponding method for the setting up and placing of a tool on a tool holder of a loader makes provision for a tool carrier to comprise a tool carrier frame and a locking device located on the tool carrier, with which a tool is locked or will be locked on the tool carrier by a transversely movable lock. The lock is moved, for the placing of the tool, from a locking position into a transversely spring pre-tensioned locking position, in which the lock is supported on the tool carrier frame or is brought there to a stop, wherein the locking device comprises the setting up and holding devices mentioned above, which were brought to a spring-pretensioned position during the setting up of the tool on the tool carrier. During the placing of the unlocked tool by the tool carrier, the setting up and holding devices are released by the fastening lug of the tool, so that the setting up and holding devices under pretension move against the lock and the lock is then released from its unlocking position supported on the tool carrier frame as a result of the spring force of the setting up and holding devices acting on it. In this interaction, the setting up and holding devices assume a holding position and the lock is moved from its unlocking position into a transversely spring pre-tensioned pre-locking position. In this pre-locking position, the lock is no longer supported, as before, on the tool carrier frame, but rather on the setting up and holding devices. With a renewed setting up of a tool, the setting up and holding devices are again deflected by the fastening lug constructed on the tool and brought from the holding position into the previously mentioned, spring pre-tensioned position. Since the lock is located, in the meantime, in its locking position and is supported on the setting up and holding devices and not as in the unlocking position, on the tool carrier frame, the holding function of the setting up and holding devices is cancelled and the lock is released, so that the released lock is brought from the pre-locking position into the locking position by transversal spring force.With the aid of the drawing which shows an embodiment example of the invention, the invention and other advantages and advantageous refinements and developments of the invention are described and explained in more detail below.BRIEF DESCRIPTION OF THE DRAWINGSFIG. 1 is a schematic side view of an agricultural vehicle with a front loader and with a tool carrier located on the front loader;FIG. 2 is a schematic perspective front view of the tool carrier from FIG. 1;FIG. 3 is a schematic side view of a tool for the tool carrier from FIGS. 1 and 2;FIG. 4 is a schematic, perspective front view of the tool carrier from FIG. 1 in a partial representation with a locking device in the locking position;FIG. 5 is a schematic, perspective front view of the tool carrier from FIG. 1 in a partial representation with the locking device in an unlocking position;FIG. 6 is a schematic, perspective front view of the tool carrier from FIG. 1 in a partial representation with the locking device in a pre-locking position;FIG. 7 is another schematic, perspective front view of the tool carrier from FIG. 1 in a partial representation with the locking device in the locking position;FIG. 8 is a schematic, perspective view of a lock of the locking device from FIGS. 4 to 7;FIG. 9 is a schematic, perspective view of the setting up and holding devices of the locking device from FIGS. 4 to 7;FIG. 10 is a schematic, transverse view of the lock on the tool carrier in the area of the setting up and holding devices in the locking position;FIG. 11 is a schematic, transverse view of the lock on the tool carrier in the area of the setting up and holding devices in the unlocking position; andFIG. 12 is a schematic, transverse view of the lock on the tool carrier in the area of the setting up and holding devices in the pre-locking position;DETAILED DESCRIPTION OF THE DRAWINGSFIG. 1 shows a loading vehicle 10 or loader in the form of an agricultural tractor 12 with a front loader 14. The front loader 14 has two loading swing arms 16 which are coupled on the tractor 12 and which extend forwards in the longitudinal direction of the tractor 12. On the front end of the loading swing arms 16, there extends, in the transverse direction to the loading swing arms 16, a tool carrier 18, wherein tool holding areas 20, 20 are designed on the tool carrier 18, in which a tool 21 in the form of a loading scoop is suspended and locked.The tool carrier 18 and the related details are explained below, with the aid of FIGS. 2 and 4 to 12.The tool carrier 18 comprises a tool carrier frame 22 which was produced in a welded construction and which can be seen in detail in FIG. 2. The tool carrier frame comprises an upper cross brace 24 and a lower cross brace 26. The cross braces 24 and 26 are connected with one another by profile plates 30, 32, 34 aligned vertically and in the longitudinal direction, which are, in accordance with the lower cross brace 26, arranged on both sides of the tool carrier or symmetrical to the center of the tool carrier. Furthermore, support plates 38, which are provided with a borehole 36, are present; they are used together with other boreholes 40, 42, 44, formed in the profile plates 30, 32, 34, to support and guide a locking device 46.The locking device 46 comprises a lock 48 which extends transverse to the tool carrier 18 and which is shown in detail in FIG. 8 and setting up and holding devices 50, which are shown in detail in FIG. 9.The lock 48 is designed in the shape of a rod and has a handle 52, a first guiding and locking section 54 on the side of the handle, a second guiding and locking section 56, opposite the side of the handle, and a setting up and holding section 58. In its course from the setting up and holding section 58 to the opposite side of the tool carrier 18 or to the second guiding and locking section 56, the lock 48 has a course 60 that is bent in such a way that open ends 62, 64 of the lock 48 together point in a direction away from the handle 52 and are aligned with one another. Furthermore, a heel 66 is formed on the lock 48 in the area of the setting up and holding section 58. The heel 66 is formed here by an end of a tube 68, which is guided over a rod-shaped section 70 of the lock 48, on the side of the handle. The handle 52 is formed by a rod which is curved in the shape of a U and which has a short leg 72, a long leg 74, and a crosslink 76, wherein there is a connecting plate 78, which is firmly connected with the two legs 72, 74 of the handle, wherein the long leg 74 extends through a borehole in the connecting plate78 and forms the first guiding and locking section 54 of the lock 48 on the side of the handle. Between the legs 72, 74, the connecting plate 78is connected with the setting up and holding section 58 or the tube 68. The crosslink 76 is used to grip the lock 48, especially if it is brought from a locking position into an unlocking position. Between the curved course 60 of the lock 48 and the heel 66, a stop 80 has been constructed on the lock 48; a coil spring 82, pushed via the (rod-shaped) lock 48, is supported on it and extends in the direction of the handle52. On the end of the coil spring 82, a disk 84 is supported on the lock 48 so it can be displaced, wherein the disk 84 has an inside borehole which is larger than the diameter of the lock 48 but is smaller than the diameter of the coil spring 82. The disk 84 is used as a movable stop which, with an activation of the lock 48 with the tool carrier frame 22, is made to engage, in particular, with the profile plate 30 on the side of the handle. As a consequence of this, the coil spring 82 is compressed against the stop 80 and a pretension force is produced on the lock48, which presses the lock 48 into a locking position in accordance with FIG. 4. As already mentioned, the lock 48 is guided or supported, in a displaceable manner, into the boreholes 36 of the support plate 38, into the boreholes 40, 42 of the profile plates 30, 32, and into the borehole 42 of the profile plate 44 on the side of the handle, on its first guiding and locking sections 54, 56, on both sides of the tool carrier frame 22. The boreholes 36, 40, 42, 44 provided for the guiding or support of the lock 48 have a diameter which is slightly larger than an outside diameter of the lock 48, so that the lock 48 is transversely displaceable (that is, in the transverse direction to the front loader or in the direction of the width of the tool carrier 18), but is radially fixed. The setting up and holding section 58 of the lock 48 is also guided through the profile plates 30, 32, 34 on the side of the handle. To this end, boreholes 86, 88, 90, which have a larger diameter than the ou
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