Frame assembly tool for crawler shear forklift

Abstract

The invention discloses a track shear forklift frame assembly tool. The track shear forklift frame assembly tool comprises an assembly platform, a slide way plate positioning mechanism, a side plate positioning and clamping mechanism and a hinge point support lug plate positioning mechanism, wherein the slide way plate positioning mechanism and the side plate positioning and clamping mechanism are arranged on the platform. The slideway plate positioning mechanism is used for supporting, positioning and clamping a vehicle frame slideway plate and supporting a vehicle frame middle partition plate, the side plate positioning and clamping mechanism is used for grabbing, positioning and centering and clamping a vehicle frame side plate, and the hinge point support lug plate positioning mechanism is used for positioning and supporting a vehicle frame hinge point support lug plate. According to the invention, the scribing-free operation of frame assembly is realized, and the positioning time of the slideway plate and the side plate is effectively shortened. And the parallelism error of the two side plates is effectively reduced through the side plate automatic centering function, and the positioning precision of the hinge point support lug plate is also remarkably improved. Workpieces do not need to be repeatedly hoisted and adjusted in the assembling process, the assembling time of a single frame is effectively shortened, the product size consistency is remarkably improved, and the technical problems that a traditional technology is low in efficiency and poor in consistency are effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of welding tooling, and in particular to a track shear forklift truck frame assembly tooling. Background Art

[0002] Track shear forklifts, as special equipment for high-altitude operations, are widely used in modern construction, civil engineering and other fields. Its frame, as a key load-bearing component, is mainly manufactured by welding process. There are many deficiencies in the traditional frame assembly process: First, manual scribing and positioning on the welding platform are required, which is cumbersome and difficult to ensure accuracy; Second, overhead cranes are frequently used to hoist components during the assembly process, which is not only time-consuming and laborious, but also poses safety hazards; Third, the manual measurement and positioning method results in low assembly efficiency, high labor intensity, and difficulty in ensuring product consistency. Especially during the positioning process of key components such as slide plates, side plates and hinge point ear plates, due to the lack of special tooling, repeated adjustments are often required, seriously affecting production efficiency and product quality. In addition, there are also deficiencies in the support and positioning of the middle partition plate of the frame in the prior art, resulting in difficult control of welding deformation. These problems seriously restrict the production efficiency and quality stability of the track shear forklift truck frame. Summary of the Invention

[0003] In view of this, the present invention provides a track shear forklift truck frame assembly tooling, which has the advantages of improving positioning accuracy, enhancing assembly efficiency, reducing labor intensity and safety hazards.

[0004] To achieve the above object, the present invention provides the following technical solutions: A track shear forklift truck frame assembly tooling, comprising: an assembly platform and a slide plate positioning mechanism, a side plate positioning and clamping mechanism, and a hinge point ear plate positioning mechanism provided on the platform.

[0005] Among them, the slide plate positioning mechanism supports, positions and clamps the frame slide plate and supports the middle partition plate of the frame, the side plate positioning and clamping mechanism grabs, positions and center-clamps the frame side plate, and the hinge point ear plate positioning mechanism positions and supports the frame hinge point ear plate.

[0006] Preferably, the slide plate positioning mechanism includes: an end positioning component, an upper plane positioning platform and a clamping component; the upper plane positioning platform is used to support the frame slide plate, the end positioning component is installed at the rear of the upper plane positioning platform and is used to position the rear end of the frame slide plate, and multiple groups of the clamping components are arranged at intervals on both sides and the front end of the assembly platform, and the clamping components are used to clamp and position the frame slide plate.

[0007] Preferably, the rear end surface of the upper plane positioning platform is flush with the rear end surface of the assembly platform, and the clamping components on both sides of the assembly platform are symmetrically arranged.

[0008] Preferably, the clamping assembly comprises a quick clamp and a lateral positioning block, and the movable arm of the quick clamp is used to hold the frame slide plate against the lateral positioning block to achieve positioning of the frame slide plate.

[0009] Preferably, the end positioning assembly comprises: an end positioning plate and a reinforcing plate, the end positioning plate directly abuts against the frame slide plate to achieve positioning of the frame slide plate, and the reinforcing plate is arranged on the rear side of the end positioning plate.

[0010] Preferably, the side panel positioning and clamping mechanism comprises: a first side panel clamping mechanism and a second side panel clamping mechanism, and the first side panel clamping mechanism and the second side panel clamping mechanism are respectively disposed on the left and right sides of the assembly platform and are arranged symmetrically.

[0011] Preferably, the first side panel clamping mechanism and the second side panel clamping mechanism are both provided in multiple groups and are evenly spaced and arranged on the left and right sides of the group pair platform.

[0012] Preferably, the first side panel clamping mechanism and the second side panel clamping mechanism are both composed of a side panel base, a driving assembly and a side panel adsorption assembly, the driving assembly is installed on the side panel base, the side panel adsorption assembly is installed on the driving assembly, the side panel adsorption assembly is used to grasp and position the frame side panel, and the driving assembly is used to drive the side panel adsorption assembly to move to achieve centering clamping of the frame side panel.

[0013] Preferably, a first guide hole, a mounting hole, and a second guide hole are vertically opened in sequence on the side panel base, the driving assembly includes a cylinder, a first guide rod and a second guide rod, the side panel adsorption assembly includes a positioning plate and a permanent magnet, the permanent magnet is mounted on the positioning plate, the cylinder is mounted in the mounting hole, the piston rod head of the cylinder is fixedly connected to the positioning plate, the first guide rod and the second guide rod are respectively inserted into the first guide hole and the second guide hole, and the first guide rod and the second guide rod are fixedly connected to the positioning plate at one end facing the positioning plate.

[0014] Preferably, the drive assembly also includes a stroke adjustment nut, and the stroke adjustment nut is installed on the end of the first guide rod and the second guide rod facing away from the positioning plate. The stroke length of the guide rod extension can be adjusted by rotating the stroke adjustment nut forward or backward.

[0015] Preferably, a plurality of permanent magnets are provided, and along the length direction of the positioning plate, the plurality of permanent magnets are arranged in pairs and evenly spaced apart.

[0016] Preferably, the hinge point ear plate positioning mechanism includes a positioning bracket and a positioning pin shaft. The positioning bracket is composed of two cross beams and two longitudinal beams. The two longitudinal beams are arranged in parallel and spaced apart. The two cross beams are horizontally arranged in parallel and spaced apart on the two longitudinal beams. Positioning holes penetrating through left and right are provided on the side portions of the two longitudinal beams. The positioning pin shaft passes through the positioning holes and the hinge point holes on the vehicle frame hinge point ear plate to achieve the positioning and support of the vehicle frame hinge point ear plate.

[0017] The beneficial effects of the present invention are as follows: Compared with the prior art, the present application realizes the operation of the vehicle frame assembly without scribing, effectively shortening the positioning time of the slide plate and the side plate. The automatic centering function of the side plate effectively reduces the parallelism error between the two side plates, and the positioning accuracy of the hinge point ear plate is also significantly improved. During the assembly process, there is no need to repeatedly hoist and adjust the workpiece, effectively reducing the assembly man-hour of a single vehicle frame, and the dimensional consistency of the product is significantly improved, effectively solving the technical problems of low efficiency and poor consistency of the traditional process.

[0018] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the assembly tooling of the present invention; Figure 2 is a top view of the assembly tooling of the present invention; Figure 3 is a schematic structural diagram of the first side plate clamping mechanism of the present invention; Figure 4 is a schematic structural diagram of the hinge point ear plate positioning mechanism of the present invention; Figure 5 is a schematic structural diagram of the crawler shear forklift vehicle frame of the present invention; Figure 6 is an exploded view of the crawler shear forklift vehicle frame of the present invention.

[0020] Reference Signs: 1, assembly platform; 2, slide plate positioning mechanism; 21, end positioning component; 22, upper plane positioning platform; 23, clamping component; 211, end positioning plate; 212, reinforcing plate; 231, quick clamp; 232, lateral positioning block; 3. Side plate positioning and clamping mechanism; 31. First side plate clamping mechanism; 32. Second side plate clamping mechanism; 33. Side plate base; 34. Driving assembly; 35. Side plate adsorption assembly; 341. Cylinder; 342. First guide rod; 343. Second guide rod; 344. Stroke adjustment nut; 351. Positioning plate; 352. Permanent magnet; 4. Hinge point ear plate positioning mechanism; 41. Positioning bracket; 42. Positioning pin shaft; 411. Cross beam; 412. Longitudinal beam; 5. Slideway plate; 6. Left side plate; 7. Right side plate; 8. Hinge point ear plate; 9. Intermediate partition board. Detailed implementation manners

[0021] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0022] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0023] Next, refer to Figures 1 to 6 Describe the track shear forklift truck frame assembly tooling in the embodiments of the present invention.

[0024] Disclosed in the embodiments of the present application is a track shear forklift truck frame assembly tooling, including: an assembly platform 1 and a slideway plate positioning mechanism 2, a side plate positioning and clamping mechanism 3, and a hinge point ear plate positioning mechanism 4 provided on the platform.

[0025] Among them, the slideway plate positioning mechanism 2 supports, positions and clamps the frame slideway plate 5 and supports the frame intermediate partition board 9. The side plate positioning and clamping mechanism 3 grabs, positions and centering-clamps the frame side plates. The hinge point ear plate positioning mechanism 4 positions and supports the frame hinge point ear plate 8.

[0026] Among them, the assembly platform 1 is the basic structure for carrying each positioning mechanism and can adopt a combination form of a welded frame and a thick steel plate. Its function is to provide an initial positioning reference for components such as the slideway plate 5 and the side plates. The slideway plate positioning mechanism 2 refers to a functional module including a support surface and a clamping device. The side plate positioning and clamping mechanism 3 refers to a device with grabbing and moving functions. The hinge point ear plate positioning mechanism 4 refers to a special fixture including a positioning pin and a bracket.

[0027] Specifically, the slide plate positioning mechanism 2 can provide a reference positioning surface for the slide plate 5 to eliminate the deformation of the plate caused by its own weight. The lateral clamping assemblies 23 are distributed along the length direction of the slide plate 5 to apply a uniform clamping force to ensure positioning stability. After the side plate positioning and clamping mechanism 3 grasps the side plate, it drives the side plate to move towards the assembly center. The hinge point ear plate positioning mechanism 4 can ensure the coaxiality of the hinge points. The three mechanisms form a spatial positioning network on the assembly platform 1. After the slide plate 5 is positioned first as a reference part, the side plate and the hinge point ear plate 8 are sequentially positioned and clamped, finally realizing the precise assembly of the overall structure of the vehicle frame.

[0028] Compared with the prior art, the traditional process relies on the operator to visually adjust the position of the workpiece, while this solution realizes automatic centering through a mechanical positioning device. The existing tooling can only perform one-way positioning, while this tooling constructs a three-dimensional positioning system: the slide plate positioning mechanism 2 controls the position in the vertical direction and two degrees of freedom in the horizontal plane, the side plate clamping mechanism controls the lateral displacement and angular deviation, and the hinge point ear plate positioning mechanism 4 ensures the spatial coordinates of the key connection points. This multi-directional collaborative positioning method significantly reduces the manual intervention link, and the assembly accuracy is guaranteed by the mechanical structure of the equipment, eliminating human errors.

[0029] Through the above technical solution, this application realizes the operation of assembling the vehicle frame without scribing, effectively shortening the positioning time of the slide plate 5 and the side plate. The automatic centering function of the side plate effectively reduces the parallelism error between the two side plates, and the positioning accuracy of the hinge point ear plate 8 is also significantly improved. During the assembly process, there is no need to repeatedly lift and adjust the workpiece, effectively reducing the assembly man-hours per single vehicle frame, and the product size consistency is significantly improved, effectively solving the technical problems of low efficiency and poor consistency of the traditional process.

[0030] In some embodiments, for example Figure 1 and Figure 2 as shown, the slide plate positioning mechanism 2 includes: an end positioning component 21, an upper plane positioning platform 22, and a clamping component 23; the upper plane positioning platform 22 is used to support the vehicle frame slide plate 5, the end positioning component 21 is installed at the rear of the upper plane positioning platform 22 and is used to position the rear end of the vehicle frame slide plate 5, multiple groups of clamping components 23 are provided, and multiple groups of clamping components 23 are spaced apart and arranged on both sides and the front end of the assembly platform 1, and the clamping component 23 is used to clamp and position the vehicle frame slide plate 5; the rear end surface of the upper plane positioning platform 22 is flush with the rear end surface of the assembly platform 1, and the clamping components 23 on both sides of the assembly platform 1 are symmetrically arranged.

[0031] Among them, the end positioning component 21 is a rigid positioning structure arranged at the rear end of the slideway plate 5, which is in direct contact with the end of the slideway plate 5 to form an axial positioning reference. The upper plane positioning platform 22 is a supporting plane covering the entire length of the slideway plate 5, used to eliminate the deformation of the slideway plate 5 caused by its own weight. The clamping component 23 refers to the clamping units distributed on both sides and the front end of the slideway plate 5, which form a uniform clamping force field through symmetric arrangement.

[0032] Specifically, after the slideway plate 5 is placed on the upper plane positioning platform 22, its bottom plane is completely attached to the supporting surface to establish a plane reference. The end positioning component 21 limits its axial position on the platform by contacting the end of the slideway plate 5. Multiple groups of clamping components 23 are symmetrically arranged along the length direction of the slideway plate 5 to form constraints in the transverse direction. The spacing between the clamping points can be adjusted according to the length of the slideway plate 5. For example, a set of clamping units is arranged every 300 - 500 mm. Through the design of aligning the rear end face of the platform with the assembly platform 1, it is ensured that the axial positioning reference of the slideway plate 5 is consistent with the vehicle coordinate system.

[0033] Through the above technical solutions, the present application realizes the precise positioning and stable clamping of the slideway plate 5 before welding, eliminates the manual scribing error, and prevents the plastic deformation of the thin-walled plate during the clamping process. The symmetric arrangement of the clamping component 23 effectively balances the lateral clamping force, avoids the offset of the slideway plate 5 under the welding heat input, provides an accurate positioning reference for the subsequent side plate assembly, and thus ensures the dimensional consistency of the frame assembly.

[0034] In some embodiments, for example Figure 1 and Figure 2 as shown, the clamping component 23 includes a quick clamp 231 and a lateral positioning block 232. The movable arm of the quick clamp 231 is used to press the frame slideway plate 5 against the lateral positioning block 232 to achieve the positioning of the frame slideway plate 5. Among them, the quick clamp 231 can press the slideway plate 5 tightly against the lateral positioning block 232 to form a rigid contact. The lateral positioning block 232 is a reference positioning component that can match the shape of the side surface of the slideway plate 5.

[0035] Specifically, after the slideway plate 5 is placed on the upper plane positioning platform 22, the operator pulls the handle of the quick clamp 231, driving the movable arm to move forward, and pressing the side of the slideway plate 5 against the reference surface of the lateral positioning block 232. The lever mechanism of the movable arm converts the manually input force into a clamping force perpendicular to the plane of the slideway plate 5, eliminating the displacement deviation of the slideway plate 5 in the horizontal direction. The lateral positioning block 232, as a rigid support reference, restricts its lateral degree of freedom through surface contact with the side surface of the slideway plate 5. During the clamping process, the adjustable stroke function of the movable arm can adapt to slideway plates 5 of different thicknesses to ensure uniform distribution of the clamping force. After clamping, the slideway plate 5 is forcibly fixed in the space formed by the upper plane positioning platform 22 and the lateral positioning block 232, realizing the complete constraint of six degrees of freedom.

[0036] Through the above technical solution, the present application solves the problem of welding deformation caused by insufficient clamping force of the slide plate 5, avoids the positioning error caused by manual operation, and at the same time shortens the clamping time to the completion of a single action. The rigid cooperation between the lateral positioning block 232 and the quick clamp 231 ensures the precise fixation of the slide plate 5 in three-dimensional space, provides a stable assembly reference for the subsequent welding process, and thus improves the overall dimensional accuracy of the vehicle frame.

[0037] In some embodiments, for example Figure 1 and Figure 2 as shown, the end positioning assembly 21 includes: an end positioning plate 211 and a reinforcing plate 212. The end positioning plate 211 directly abuts against the vehicle frame slide plate 5 to achieve the positioning of the vehicle frame slide plate 5, and the reinforcing plate 212 is arranged on the rear side surface of the end positioning plate 211. Among them, the end positioning plate 211 is a rigid component in contact with the rear end of the slide plate 5, and it is fixed on the assembly platform 1 by welding or bolt connection, and is used to provide a reference positioning surface for the slide plate 5. The reinforcing plate 212 is a support structure perpendicular to the end positioning plate 211, and can specifically adopt a triangular or rectangular steel plate, and is connected to the rear side surface of the end positioning plate 211 by welding, and is used to improve the bending stiffness of the end positioning plate 211.

[0038] Through the above technical solution, the present application realizes the stable control of the positioning accuracy of the rear end of the slide plate 5, solves the problem of positioning deviation caused by insufficient rigidity of the thin-walled slide plate 5 during the welding process, and can effectively control the assembly error and extend the service life of the positioning assembly.

[0039] In some embodiments, for example Figure 1 as shown, the side plate positioning and clamping mechanism 3 includes: a first side plate clamping mechanism 31 and a second side plate clamping mechanism 32. The first side plate clamping mechanism 31 and the second side plate clamping mechanism 32 are respectively arranged on the left and right sides of the assembly platform 1 and are symmetrically arranged. Among them, the first side plate clamping mechanism 31 is a device for positioning and clamping the vehicle frame side plate from the left side of the assembly platform 1, and is used to apply a horizontal clamping force pointing to the central axis of the platform. The second side plate clamping mechanism 32 is a clamping device symmetrically arranged from the right side of the assembly platform 1, and its structure is mirror-symmetrical with the left side mechanism, and is used to form a symmetrical binding force.

[0040] Specifically, when the vehicle frame side plate is hoisted onto the assembly platform 1, the first side plate clamping mechanism 31 grabs the side plate from the left side, and the second side plate clamping mechanism 32 synchronously grabs the other side plate from the right side. The two clamping mechanisms move synchronously in the direction of the central axis of the platform according to a preset trajectory, and ensure that the moving speed and displacement are exactly the same through the mechanical transmission system. When the two side plates contact the middle partition 9, the symmetrically arranged clamping mechanisms automatically stop moving. At this time, the distance between the two side plates is equal to the design size and is symmetrically distributed relative to the central axis of the platform, and precise centering is completed.

[0041] Through the above technical solution, the present application solves the problem of symmetry deviation caused by manual assembly of the frame side plates and realizes the automatic centering and positioning of the two side plates. The left and right symmetric clamping mechanisms replace manual adjustment through synchronous mechanical movement, ensuring that the distance accuracy between the two side plates is controlled within the process requirements, and the symmetry axis coincides completely with the platform reference, significantly improving the assembly consistency.

[0042] Further, multiple sets of the first side plate clamping mechanism 31 and the second side plate clamping mechanism 32 are provided and are evenly spaced apart on the left and right sides of the assembly platform 1 respectively. Specifically, the side plate clamping mechanism adopts multiple independent units arranged at equal intervals along the longitudinal direction of the side plate. When the side plate is hoisted to the predetermined position, all the clamping units are activated simultaneously, pushing the side plate towards the middle until the preset centering position is reached. The evenly distributed clamping points eliminate local stress concentration and avoid the distortion and deformation of the side plate caused by single-point stress. The left and right symmetric clamping mechanisms form a balanced clamping force field under synchronous control, ensuring that the side plate always maintains a vertical centering state during the movement.

[0043] Through the above technical solution, the present application realizes the full-length stable clamping of the frame side plates during the assembly process, eliminates the risk of sheet deformation caused by excessive local clamping force, and at the same time, the multi-station synchronous clamping significantly shortens the positioning and adjustment time. The symmetrically distributed clamping mechanisms ensure the balanced force on the side plate during the movement, significantly improving the centering accuracy and meeting the requirements of high-precision welding processes.

[0044] In some embodiments, for example Figure 3 as shown, both the first side plate clamping mechanism 31 and the second side plate clamping mechanism 32 are composed of a side plate base 33, a driving component 34, and a side plate adsorption component 35. The driving component 34 is installed on the side plate base 33, and the side plate adsorption component 35 is installed on the driving component 34. The side plate adsorption component 35 is used to grab and position the frame side plate, and the driving component 34 is used to drive the side plate adsorption component 35 to move to achieve the centering and clamping of the frame side plate. Among them, the side plate base 33 is a rigid support structure providing the installation foundation, and its function is to ensure the installation stability and movement accuracy of the driving component 34 and the side plate adsorption component 35. The driving component 34 is a mechanism providing linear motion power, and its function is to control the movement path and clamping stroke of the side plate adsorption component 35 through linear reciprocating motion. The side plate adsorption component 35 is a device for grabbing the side plate, and its function is to achieve rapid grabbing and releasing without damaging the surface of the side plate.

[0045] Specifically, the side plate base 33 is fixed to both sides of the assembly platform 1 by bolts, providing a rigid support for the driving assembly 34. The power output end of the driving assembly 34 is directly connected to the side plate adsorption assembly 35, driving the side plate adsorption assembly 35 to move along a predetermined trajectory through linear motion. When the vehicle frame side plate is hoisted to the adsorption area, the side plate adsorption assembly 35 grabs the side plate by magnetic force or vacuum adsorption. Subsequently, the driving assembly 34 pushes the side plate adsorption assembly 35 towards the center of the assembly platform 1, and the clamping mechanisms on both sides act synchronously to automatically align the two side plates to the designed position. During this process, the rigid support of the side plate base 33 ensures no deviation during the clamping process, the stroke control of the driving assembly 34 guarantees the symmetric movement of the two side plates, and the non-damaging grasping of the adsorption assembly avoids scratching the surface of the side plate.

[0046] Through the above technical solution, the present application realizes the rapid grasping and precise positioning of the vehicle frame side plate. The bidirectional synchronous movement of the driving assembly 34 ensures the symmetric clamping of the two side plates, and the non-contact fixing method of the adsorption assembly avoids damage to the surface of the workpiece. The combination of the rigid support of the side plate base 33 and the stroke control of the driving assembly 34 guarantees the position repetition accuracy during the assembly process, solves the problems of low efficiency and poor consistency in manual assembly, and improves the safety and reliability during the side plate clamping process.

[0047] Further, a first guiding hole, a mounting hole, and a second guiding hole are sequentially formed vertically on the side plate base 33. The driving assembly 34 includes a cylinder 341, a first guiding rod 342, and a second guiding rod 343. The side plate adsorption assembly 35 includes a positioning plate 351 and a permanent magnet 352. The permanent magnet 352 is installed on the positioning plate 351. There are multiple permanent magnets 352, which are arranged in pairs and evenly spaced along the length direction of the positioning plate 351. The cylinder 341 is installed in the mounting hole, and the piston rod head of the cylinder 341 is fixedly connected to the positioning plate 351. The first guiding rod 342 and the second guiding rod 343 are respectively inserted into the first guiding hole and the second guiding hole, and the ends of the first guiding rod 342 and the second guiding rod 343 facing the positioning plate 351 are both fixedly connected to the positioning plate 351.

[0048] Among them, the first guiding hole and the second guiding hole refer to two through holes arranged vertically on the side plate base 33, which can be specifically realized by high-precision machining, and are used to constrain the movement trajectory of the guiding rod and eliminate the horizontal offset of the side plate adsorption assembly 35; the mounting hole refers to the fixing hole located between the two guiding holes, and the cylinder 341 can be specifically fixed by a flange connection method to ensure the axial centering of the driving force transmission; the positioning plate 351 refers to a plate-like structure with a mounting surface, and the permanent magnet 352 can be specifically integrated by welding or bolt connection to form a multi-point adsorption contact surface; the paired permanent magnets 352 refer to two columns of magnet units symmetrically arranged along the length direction of the positioning plate 351, which can be specifically realized by neodymium iron boron materials, and a continuous magnetic adsorption area is formed by evenly spaced arrangement to balance the distribution of the adsorption force received by the side plate.

[0049] Specifically, when the cylinder 341 is started, the piston rod pushes the positioning plate 351 to move axially along the guiding rod, and the first guiding rod 342 and the second guiding rod 343 slide in the corresponding guiding holes respectively, forming a linear motion trajectory with double-point constraint to prevent the positioning plate 351 from generating radial offset during the movement. The design of the paired and evenly arranged permanent magnets 352 enables the side plate to maintain a balanced magnetic suction force at each point along the length direction during the adsorption process, avoiding deformation of the side plate caused by excessive local adsorption force. The rigid connection between the guiding rod and the positioning plate 351 ensures the direct transmission of the driving force, and the structure of the cylinder 341 embedded in the mounting hole reduces the cumulative error of the power transmission path and improves the repeated precision of the side plate clamping and positioning.

[0050] Through the above technical solutions, the present application solves the problem of positioning deviation caused by unstable guiding during the side plate clamping process, and realizes the linear motion control of the side plate adsorption assembly 35; through the symmetrical layout of multiple permanent magnets 352, it is ensured that each part of the side plate is evenly stressed during grasping, avoiding workpiece deformation caused by stress concentration, thereby improving the accuracy and consistency of the frame assembly.

[0051] In some embodiments, for example Figure 3 As shown, the drive assembly 34 further includes a stroke adjustment nut 344. The ends of the first guiding rod 342 and the second guiding rod 343 away from the positioning plate 351 are both equipped with a stroke adjustment nut 344. The stroke length of the guiding rod extending out is adjusted by rotating the stroke adjustment nut 344 forward or backward. Among them, the stroke adjustment nut 344 refers to a metal kit with internal threads, which can be specifically realized by a hexagonal nut or a butterfly nut, and its thread parameters can match the external threads of the guiding rod. This nut converts the rotational motion into the axial displacement of the guiding rod to achieve the stroke adjustment function. When the two cooperate, the guiding rod can generate an axial displacement equal to the thread lead for each rotation of the nut.

[0052] Specifically, when it is necessary to adjust the clamping stroke of the side plate, the operator uses a wrench tool to rotate the stroke adjustment nut 344. When rotating forward, the nut drives the guide rod to move away from the positioning plate 351, increasing the extendable length of the guide rod; when rotating backward, the guide rod contracts toward the positioning plate 351. This mechanical adjustment method directly controls the moving end position of the positioning plate 351 by changing the axial position of the guide rod in the side plate base 33. Since the first guide rod 342 and the second guide rod 343 are synchronously provided with the stroke adjustment nut 344, it can ensure that the two sets of guide assemblies have the same extendable length, avoiding skew of the positioning plate 351 during movement. When assembling side plates of different thicknesses, by pre-adjusting the stroke of the guide rod, the side plate adsorption assembly 35 can accurately reach the set clamping position under the action of the drive assembly 34, ensuring reliable centering of workpieces in different batches.

[0053] Through the above technical solution, the present application can be quickly adapted to different specifications of side plates by manual adjustment, eliminating the positioning error caused by workpiece size deviation. The synchronous adjustment design of the double guide rods ensures the parallel movement characteristics during the clamping process of the side plate, avoiding deflection of the positioning plate 351 caused by single-sided adjustment. The mechanical limit function of the stroke adjustment nut 344 can ensure the repeated positioning accuracy of each clamping action, effectively solving the problem of uneven clamping force existing in the traditional fixed-stroke mechanism.

[0054] In some embodiments, for example Figure 4 As shown, the hinge point ear plate positioning mechanism 4 includes a positioning bracket 41 and a positioning pin 42. The positioning bracket 41 is composed of two cross beams 411 and two longitudinal beams 412. The two longitudinal beams 412 are arranged in parallel at intervals, and the two cross beams 411 are horizontally arranged in parallel at intervals on the two longitudinal beams 412. Positioning holes penetrating from left to right are provided on the sides of the two longitudinal beams 412. The positioning pin 42 passes through the positioning holes and the hinge point holes on the vehicle frame hinge point ear plate 8 to achieve the positioning and support of the vehicle frame hinge point ear plate 8. Among them, the positioning bracket 41 is a rigid grid frame formed by cross-connecting the cross beam 411 and the longitudinal beam 412, and can be specifically welded by channel steel or rectangular steel pipes. Its function is to provide a stable three-dimensional space positioning reference for the hinge point ear plate 8. Among them, the positioning holes on the sides of the longitudinal beams 412 refer to through holes opened along the length direction of the longitudinal beams 412, and can be specifically formed by drilling or milling. Its function is to restrict the horizontal position of the hinge point ear plate 8 through the hole positions. Among them, the positioning pin 42 is a cylindrical positioning element matching the positioning holes and the hinge point holes, and its function is to simultaneously achieve vertical support and coaxiality control through hole-shaft cooperation.

[0055] Specifically, two longitudinal beams 412 are arranged in parallel at intervals to form a longitudinal positioning reference plane. Two cross beams 411 are transversely connected to the longitudinal beams 412 to form a rigid grid structure, ensuring the overall stability of the positioning bracket 41. When the vehicle frame is flipped, the hinge holes of the hinge ear plates 8 are aligned with the positioning holes on the side of the longitudinal beams 412, and the positioning pin shafts 42 sequentially pass through the positioning holes of the two longitudinal beams 412 on both sides and the hinge holes of the hinge ear plates 8. During this process, the positioning holes of the longitudinal beams 412 provide horizontal limitation to the pin shafts, and the outer cylindrical surface of the pin shafts cooperates with the inner wall of the hinge holes to achieve vertical support. At the same time, the two hinge ear plates 8 on both sides achieve forced coaxial positioning through the through installation of the same pin shaft.

[0056] Through the above technical solution, the present application realizes the measurement-free positioning of the hinge ear plate assembly, eliminates the cumulative error caused by manual scribing, ensures that the coaxiality of multiple ear plates is controlled within the mechanical processing tolerance range, and at the same time integrates the original positioning and support operations carried out step by step into a single pin shaft insertion action, significantly shortening the operation time of the assembly process.

[0057] The other components and operations of the track shear forklift vehicle frame assembly tooling according to the embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0058] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0059] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A track shear forklift truck frame assembly tooling, characterized in that Including: A butt-joint platform and a slide plate positioning mechanism, a side plate positioning and clamping mechanism, and a hinge point ear plate positioning mechanism arranged on the platform; The slide plate positioning mechanism supports, positions, and clamps the frame slide plate and supports the middle partition of the frame. The side plate positioning and clamping mechanism grabs, positions, and center-clamps the frame side plate. The hinge point ear plate positioning mechanism positions and supports the frame hinge point ear plate.

2. The assembling tooling for the crawler shear forklift truck frame according to claim 1, characterized in that The slide plate positioning mechanism includes: an end positioning component, an upper plane positioning platform, and a clamping component. The upper plane positioning platform is used to support the frame slide plate. The end positioning component is installed at the rear of the upper plane positioning platform and is used to position the rear end of the frame slide plate. A plurality of groups of the clamping components are arranged at intervals on both sides and the front end of the butt-joint platform. The clamping components are used to clamp and position the frame slide plate.

3. The assembling tooling for the crawler shear forklift truck frame according to claim 2, characterized in that, The rear end face of the upper plane positioning platform is flush with the rear end face of the butt-joint platform. The clamping components on both sides of the butt-joint platform are symmetrically arranged.

4. The track shear forklift truck frame assembly tooling according to claim 3, characterized in that, The clamping component includes a quick clamp and a lateral positioning block. The movable arm of the quick clamp is used to press the frame slide plate against the lateral positioning block to achieve the positioning of the frame slide plate.

5. The assembling tooling for the crawler shear forklift truck frame according to claim 2, characterized in that The end positioning component includes: an end positioning plate and a reinforcing plate. The end positioning plate is in direct contact with the frame slide plate to achieve the positioning of the frame slide plate. The reinforcing plate is arranged on the rear side face of the end positioning plate.

6. The fixture for assembling the crawler shear forklift truck frame according to claim 2, characterized in that The side plate positioning and clamping mechanism includes: a first side plate clamping mechanism and a second side plate clamping mechanism. The first side plate clamping mechanism and the second side plate clamping mechanism are respectively arranged on the left and right sides of the butt-joint platform and are symmetrically arranged.

7. The fixture for assembling the crawler shear forklift truck frame according to claim 6, characterized in that, Both the first side plate clamping mechanism and the second side plate clamping mechanism are provided with multiple groups and are respectively evenly spaced on the left and right sides of the butt-joint platform.

8. The fixture for assembling the crawler shear forklift truck frame according to claim 7, characterized in that, Both the first side plate clamping mechanism and the second side plate clamping mechanism are composed of a side plate base, a driving component, and a side plate adsorption component. The driving component is installed on the side plate base. The side plate adsorption component is installed on the driving component. The side plate adsorption component is used to grab and position the frame side plate. The driving component is used to drive the side plate adsorption component to move to achieve the center clamping of the frame side plate.

9. The fixture for assembling the crawler shear forklift truck frame according to claim 8, characterized in that, A first guide hole, a mounting hole, and a second guide hole are sequentially formed vertically on the side plate base. The driving component includes a cylinder, a first guide rod, and a second guide rod. The side plate adsorption component includes a positioning plate and a permanent magnet. The permanent magnet is installed on the positioning plate. The cylinder is installed in the mounting hole. The piston rod head of the cylinder is fixedly connected to the positioning plate. The first guide rod and the second guide rod are respectively inserted into the first guide hole and the second guide hole. One ends of the first guide rod and the second guide rod facing the positioning plate are both fixedly connected to the positioning plate.

10. The fixture for assembling the crawler shear forklift truck frame according to claim 9, characterized in that, The driving assembly also includes a stroke adjustment nut, and the stroke adjustment nut is installed on the end of the first guide rod and the second guide rod facing away from the positioning plate. The stroke length of the guide rod extension can be adjusted by rotating the stroke adjustment nut forward or backward.

11. The assembling tooling for the crawler shear forklift truck frame according to claim 9, characterized in that, There are multiple permanent magnets, and along the length direction of the positioning plate, the multiple permanent magnets are arranged in pairs and evenly spaced apart.

12. The assembling tooling for the crawler shear forklift truck frame according to claim 1, characterized in that, The hinge point lug plate positioning mechanism includes a positioning bracket and a positioning pin shaft. The positioning bracket is composed of two cross beams and two longitudinal beams. The two longitudinal beams are arranged in parallel and spaced apart. The two cross beams are horizontally arranged on the two longitudinal beams in parallel and spaced apart. The sides of the two longitudinal beams are both provided with left and right through positioning holes. The positioning pin shaft passes through the positioning hole and the hinge point hole on the frame hinge point lug plate to realize the positioning and support of the frame hinge point lug plate.

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