A fork truck reduction gearbox housing clamp

Abstract

The application discloses a forklift reduction gearbox shell clamp, comprising a support table, a box clamping device and a box cover clamping device; the first positioning block and the three-jaw chuck of the box clamping device are arranged at the first end of the first fixed plate, and the three-jaw chuck is close to the first positioning block; the second positioning block and the centering chuck are arranged at the second end of the first fixed plate, the box is placed on the first positioning block and the second positioning block, and the first clamping assembly is arranged at the two ends of the first fixed plate; the fixed table of the box cover clamping device is located at the bottom of the second fixed plate, the rollers are arranged at the two ends of the fixed table, and the plurality of third fixed blocks and the second clamping assembly are located at the periphery of the second fixed plate. The horizontal box clamping device and the vertical box cover clamping device are integrated on the support table, independent special clamps are not needed for the box and the box cover, the number of clamps to be purchased and made is effectively reduced, and the hardware investment cost of the clamps and the subsequent storage, account, maintenance and management costs are significantly reduced.

Description

Technical Field

[0001] This invention relates to the field of forklift technology, and more specifically, to a clamp for a forklift gearbox housing. Background Technology

[0002] As the forklift market becomes increasingly segmented, the development model of small-batch, multi-variety production is becoming more prominent. For the manufacturing of gearbox housings and covers, the traditional processing method requires the use of separate production fixtures for both the housing and the cover. Due to the segmented nature of the products, the output of each type of product is limited, and there are frequent fixture changes in the actual production process, which affects production efficiency. At the same time, the number of fixtures required is large, and the fixture manufacturing cost is high.

[0003] Independent fixture production is suitable for mass production, allowing for long-term use with a single mold change. However, for the production characteristics of the forklift industry, although this fixture production method can solve the processing of the box body and box cover, the fixture replacement flexibility is too poor. Replacing fixtures requires a lot of time, and the large number of fixtures required results in high costs and management costs. At the same time, due to the uneven processing cycle of the box body and box cover, and the need for matching supplies for the subsequent assembly process, there are difficulties in the actual production organization and arrangement of matching.

[0004] Therefore, how to provide a clamp for the housing of a forklift gearbox has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] The purpose of this invention is to provide a new technical solution for a clamping device for a forklift gearbox housing.

[0006] According to a first aspect of the present invention, a clamp for a forklift gearbox housing is provided, the housing of the forklift gearbox including a housing body and a housing cover; the clamp includes: a support platform, a housing body clamping device horizontally placed on the support platform, and a housing cover clamping device vertically placed on the support platform;

[0007] The box clamping device includes a first fixing plate, a first fixing component, and a first clamping component. The first fixing component includes a first positioning block, a second positioning block, a three-jaw chuck, and a centering chuck. The first positioning block and the three-jaw chuck are disposed at the first end of the first fixing plate, with the three-jaw chuck close to the first positioning block. The second positioning block and the centering chuck are disposed at the second end of the first fixing plate. The box is placed on the first positioning block and the second positioning block. The three-jaw chuck and the centering chuck are used to fix the box. The first clamping component is disposed at both ends of the first fixing plate and is used to clamp the box.

[0008] The lid clamping device includes a second fixing plate, a second fixing component, and a second clamping component. The second fixing component includes a fixing platform, rollers, and multiple third fixing blocks. The fixing platform is located at the bottom of the second fixing plate, and the rollers are disposed at both ends of the fixing platform. The multiple third fixing blocks and the second clamping component are located around the second fixing plate. The second clamping component is used to fix the lid.

[0009] Optionally, a first positioning hole is provided at the first end of the housing;

[0010] The three-jaw chuck includes a base plate, a jaw body, and three jaw heads. The base plate is fixed on the first fixing plate. The bottom of the jaw body is connected to the base plate. The three jaw heads are all movably disposed on the top of the jaw body, and the included angle between two adjacent jaw heads is 120 degrees. The three jaw heads are inserted into the first positioning hole.

[0011] Optionally, a second positioning hole is provided at the second end of the housing;

[0012] The centering chuck includes a support block, a centering clamp, and two clamps. The support block is disposed on the first fixed plate. The bottom of the centering clamp is connected to the support block. The two clamps are respectively movably disposed at both ends of the centering clamp. The two clamps are inserted into the second positioning hole and abut against the inner wall of the second positioning hole.

[0013] Optionally, the box clamping device further includes multiple limiting rods, the three-jaw chuck is located in the middle of the first fixed plate or on one side of the first fixed plate, and the multiple limiting rods are arranged on the outside of the three-jaw chuck along the length direction.

[0014] Optionally, the first clamping assembly includes a fourth fixing block, a fifth fixing block, a first clamping plate, and a second clamping plate. The fourth fixing block and the fifth fixing block are respectively located at both ends of the first fixing plate. The fourth fixing block is located outside the three-jaw chuck, and the fifth fixing block is located on both sides of the centering chuck or on the same side of the centering chuck. The height of the fourth fixing block is greater than the height of the fifth fixing block. The first clamping plate and the second clamping plate are rotatably disposed on the fourth fixing block and the fifth fixing block for clamping the box body.

[0015] Optionally, the support platform includes a mold base, a mounting plate, and a positioning plate. The mounting plate is horizontally disposed on the mold base, and the positioning plate is vertically disposed on the mounting plate. The mounting plate is provided with a plurality of first fixing bosses, and the positioning plate is provided with a plurality of second fixing bosses.

[0016] The box clamping device further includes a plurality of first mounting holes and a first lifting ring. The plurality of first mounting holes are respectively disposed on the outer edge of the first fixing plate, the first lifting ring is disposed on the first end of the first fixing plate, and the first fixing boss is inserted into the first mounting hole.

[0017] The lid clamping device further includes multiple second mounting holes and a second lifting ring. The multiple second mounting holes are respectively located on the outer edge of the second fixing plate, the second lifting ring is located on the first end of the second fixing plate, and the second fixing boss is inserted into the second mounting hole.

[0018] Optionally, the upper end of the fixed platform has a clearance groove, which is an isosceles trapezoid.

[0019] The third fixing block is arranged along the length of the second fixing plate.

[0020] Optionally, the second clamping assembly includes a plurality of connecting blocks and a pressure plate. The plurality of connecting blocks are respectively located at the second end of the second fixing plate and on both sides of the second fixing plate. The pressure plate is rotatably mounted on the connecting blocks and is used to fix the box cover.

[0021] Optionally, the second clamping assembly further includes a third positioning block, a fourth positioning block, a positioning rod, and a top head. The third positioning block and the fourth positioning block are located at the middle position of the second fixed plate along the length direction and are respectively located on both sides of the second fixed plate along the width direction. The positioning rod and the top head are respectively disposed opposite to each other on the third positioning block and the fourth positioning block. The top head is telescopically disposed on the fourth positioning block, and the positioning rod and the top head are used to clamp the box cover.

[0022] Optionally, the lid clamping device further includes a clearance opening, which is disposed on the second fixing plate.

[0023] The beneficial effects of this invention are as follows:

[0024] This invention integrates the horizontal box clamping device and the vertical box cover clamping device on the support platform, eliminating the need for separate dedicated clamps for the box and the box cover. This aligns with the characteristics of forklift production of small batches, multiple varieties, and multiple models of subdivided products, effectively reducing the number of clamps to purchase and manufacture, and significantly lowering the hardware investment cost of clamps as well as the subsequent warehousing, ledger, and maintenance management costs.

[0025] Furthermore, the simultaneous horizontal machining of the box body and the vertical machining of the box cover on the same support platform can balance the machining rhythm of the two processes, avoid the original problem of mismatch between the cycle time of the box body and the box cover, facilitate production planning and scheduling, and synchronize the flow of workpieces. This effectively solves the problems of difficulty in matching box bodies and box covers in the assembly processes of the preceding and following processes, chaotic production scheduling, and backlog of work-in-process, thus streamlining the overall production process.

[0026] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0028] Figure 1 This is a structural diagram of the clamp for the forklift gearbox housing in Embodiment 1 of the present invention;

[0029] Figure 2 This is a structural diagram of the box clamping device in Embodiment 1 of the present invention;

[0030] Figure 3 This is a structural diagram of the box clamping device fixing the box in Embodiment 1 of the present invention;

[0031] Figure 4 This is a structural diagram of the box lid clamping device in Embodiment 1 of the present invention;

[0032] Figure 5 This is a structural diagram of the box cover clamping device fixing the box cover in Embodiment 1 of the present invention;

[0033] Figure 6 This is a structural diagram of the box body in Embodiment 1 of the present invention;

[0034] Figure 7 This is a structural diagram of the support platform of the present invention;

[0035] Figure 8 This is a structural diagram of the three-jaw chuck of the present invention;

[0036] Figure 9 This is a structural diagram of the centering chuck of the present invention;

[0037] Figure 10 This is a structural diagram of the clamp for the forklift gearbox housing in Embodiment 2 of the present invention;

[0038] Figure 11 This is a structural diagram of the box clamping device in Embodiment 2 of the present invention;

[0039] Figure 12 This is a structural diagram of the box clamping device fixing the box in Embodiment 2 of the present invention;

[0040] Figure 13 This is a structural diagram of the box lid clamping device in Embodiment 2 of the present invention;

[0041] Figure 14 This is a structural diagram of the box cover clamping device fixing the box cover in Embodiment 2 of the present invention;

[0042] Figure 15 This is a structural diagram of the box in Embodiment 2 of the present invention.

[0043] The diagram shows the following: 1. Shell; 11. Box body; 12. First positioning hole; 13. Second positioning hole; 14. Box cover; 2. Support platform; 21. Mold base; 22. Mounting plate; 23. Positioning plate; 24. First fixing boss; 25. Second fixing boss; 3. Box body clamping device; 31. First fixing plate; 32. First fixing component; 321. First positioning block; 322. Second positioning block; 323. Three-jaw chuck; 324. Base plate; 325. Jaw body; 326. Jaw head; 327. Centering chuck; 328. Support block; 329. Centering clamp; 3210. Chuck; 33. 1. Clamping assembly; 331. Fourth fixing block; 332. Fifth fixing block; 333. First clamping plate; 334. Second clamping plate; 34. Limiting rod; 35. First mounting hole; 36. First lifting ring; 4. Box cover clamping device; 41. Second fixing plate; 42. Second fixing assembly; 421. Fixing platform; 422. Roller; 423. Third fixing block; 43. Second clamping assembly; 431. Connecting block; 432. Pressure plate; 433. Third positioning block; 434. Fourth positioning block; 435. Positioning rod; 436. Top head; 44. Second mounting hole; 45. Second lifting ring; 46. Clearance opening. Detailed Implementation

[0044] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0045] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0046] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0047] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0048] like Figures 1 to 15As shown, this embodiment of the invention provides a fixture for a forklift gearbox housing. The forklift gearbox housing 1 includes a housing 11 and a cover 14. The fixture includes a support platform 2, a housing clamping device 3 horizontally placed on the support platform 2, and a cover clamping device 4 vertically placed on the support platform 2. Specifically, the housing 11 is horizontally placed and the cover 14 is vertically arranged in a partitioned manner, with a clear division of labor. The workpiece loading, unloading, and locking operations are simple and quick. The integrated tooling layout is neat and organized, reducing cluttered tooling stacking, reducing the difficulty of on-site fixture classification, inspection, and replacement management, streamlining production processes, and optimizing the overall lean production management level of the workshop.

[0049] The box clamping device 3 includes a first fixing plate 31, a first fixing component 32, and a first clamping component 33. The first fixing component 32 includes a first positioning block 321, a second positioning block 322, a three-jaw chuck 323, and a centering chuck 327. The first positioning block 321 and the three-jaw chuck 323 are located at the first end of the first fixing plate 31, and the three-jaw chuck 323 is close to the first positioning block 321. The second positioning block 322 and the centering chuck 327 are located at the second end of the first fixing plate 31. The box 11 is placed on the first positioning block 321 and the second positioning block 322. The three-jaw chuck 323 and the centering chuck 327 are used to fix the box 11. The first clamping component 33 is located at both ends of the first fixing plate 31 and is used to clamp the box 11.

[0050] The lid clamping device 4 includes a second fixing plate 41, a second fixing component 42, and a second clamping component 43. The second fixing component 42 includes a fixing platform 421, rollers 422, and multiple third fixing blocks 423. The fixing platform 421 is located at the bottom of the second fixing plate 41, and the rollers 422 are located at both ends of the fixing platform 421. The multiple third fixing blocks 423 and the second clamping component 43 are all located around the second fixing plate 41. The second clamping component 43 is used to fix the lid 14.

[0051] When fixing the housing 11, the housing 11 of the gearbox to be processed is first placed horizontally on the first positioning block 321 and the second positioning block 322, and the first positioning block 321 and the second positioning block 322 are used to complete the initial positioning. Then, the three-jaw chuck 323 and the centering chuck 327 are operated in sequence to center and lock the housing 11. Then, the first clamping assembly 33 is activated to clamp the housing 11, completing the clamping of the housing 11. The present invention adopts a combination positioning and clamping structure of multiple positioning blocks, three-jaw chuck 323 and centering chuck 327, which can be compatible with housing 11 workpieces of multiple specifications and models of gearboxes. Moreover, the housing 11 is positioned by the first positioning block 321 and the second positioning block 322, and locked by the three-jaw chuck 323 and the centering chuck 327, so that the force is evenly distributed by multi-point limiting clamping.

[0052] When fixing the box cover 14, the box cover 14 to be processed is first placed vertically on the fixing platform 421 of the box cover clamping device 4. With the assistance of rollers 422 for alignment, and limited by multiple third fixing blocks 423, the box cover 14 is then pressed and fixed using the second clamping assembly 43, completing the clamping of the box cover 14. The box cover 14 of this invention uses multiple sets of fixing blocks and rollers 422 for universal clamping, eliminating the need for frequent disassembly and replacement of special clamps. This significantly reduces downtime for clamp changes and debugging, perfectly adapting to the small-batch, rotating production mode of the forklift industry, and solving the pain points of poor flexibility and time-consuming clamp changes in traditional clamps.

[0053] Next, by using lifting tools to act on the first fixed plate 31 and the second fixed plate 41 respectively, the first fixed plate 31 and the second fixed plate 41 are moved to the support platform 2, with the first fixed plate 31 placed horizontally on the support platform 2 and the second fixed plate 41 placed vertically on the support platform 2, thereby enabling the equipment to simultaneously process the box 11 and the box cover 14.

[0054] This invention integrates the horizontal box clamping device 3 and the vertical box cover clamping device 4 onto the support platform 2, eliminating the need to equip the box 11 and the box cover 14 with separate dedicated clamps. This is in line with the characteristics of small-batch, multi-variety, and multi-model subdivided product production of forklifts, effectively reducing the number of clamps to purchase and manufacture, and significantly reducing the cost of clamp hardware investment and subsequent warehousing, ledger, and maintenance management costs.

[0055] Furthermore, the horizontal machining of the box body 11 and the vertical machining of the box cover 14 are completed simultaneously on the same support platform 2, which can balance the machining rhythm of the two, avoid the original problem of mismatch between the process rhythm of the box body 11 and the box cover 14, facilitate production planning and scheduling, and synchronous transfer of workpieces. It effectively solves the problems of difficulty in matching the supply of box body 11 and box cover 14 in the preceding and following assembly processes, chaotic production scheduling, and backlog of work-in-process, and streamlines the overall production process.

[0056] In one embodiment of the clamp for the forklift gearbox housing of the invention, such as Figure 6 , Figure 7 , Figure 8 and Figure 15 As shown, a first positioning hole 12 is provided at the first end of the housing 11.

[0057] The three-jaw chuck 323 includes a base plate 324, a jaw body 325, and three jaw heads 326. The base plate 324 is fixed on the first fixing plate 31. The bottom of the jaw body 325 is connected to the base plate 324. The three jaw heads 326 are all movably disposed on the top of the jaw body 325, and the included angle between two adjacent jaw heads 326 is 120 degrees. The three jaw heads 326 are inserted into the first positioning hole 12.

[0058] It should be noted that the three-jaw chuck 323 has an external drive system, which can be hydraulic, electric, or other drive methods. This is a conventional solution and will not be elaborated here.

[0059] When the gearbox housing 11 to be processed is placed horizontally on the first positioning block 321 and the second positioning block 322, the three jaws 326 of the three-jaw chuck 323 are inserted into the first positioning hole 12 of the housing 11. Then, the drive system drives the three jaws 326 to move outward, thereby causing the three jaws 326 to act on the inner wall of the first positioning hole 12, thereby fixing the first end of the housing 11.

[0060] The three-jaw chuck 323 of the present invention uses jaws 326 evenly distributed at 120° to be inserted into the first positioning hole 12 at the first end of the housing 11. The three-jaw chuck 323 has a three-point centering structure with high positioning accuracy and good coaxiality, which can realize the rapid and accurate alignment of the workpiece. The three jaws 326 are adjustable to fit different specifications of the first positioning hole 12, improving the versatility of the tooling. In addition, the force is evenly distributed at three points, the clamping is stable, and it is not easy to deviate or shake during the processing, effectively ensuring the processing quality of the housing 11.

[0061] In one embodiment of the clamp for the forklift gearbox housing of the invention, such as Figure 6 , Figure 9 and Figure 15 As shown, a second positioning hole 13 is provided at the second end of the housing 11;

[0062] The centering chuck 327 includes a support block 328, a centering clamp 329, and two clamps 3210. The support block 328 is mounted on the first fixed plate 31. The bottom of the centering clamp 329 is connected to the support block 328. The two clamps 3210 are respectively movably mounted at both ends of the centering clamp 329. The two clamps 3210 are inserted into the second positioning hole 13 and abut against the inner wall of the second positioning hole 13.

[0063] It should be noted that the center chuck 327 also has an external drive system. The drive system can be hydraulic, electric, or other drive methods. This is a conventional solution and will not be elaborated here.

[0064] When the gearbox housing 11 to be processed is placed horizontally on the first positioning block 321 and the second positioning block 322, the centering chuck 327 is inserted into the second positioning hole 13. Then, the drive system drives the two chucks 3210 to move until they act on the inner wall of the second positioning hole 13, thereby fixing the second end of the housing 11.

[0065] The centering chuck 327 of the present invention forms a bidirectional centering limit by means of two clamps 3210 provided on its top and the second positioning hole 13, and forms a two-end combination positioning with the front three-jaw chuck 323, which further improves the overall positioning accuracy and coaxiality of the housing 11.

[0066] Furthermore, the chuck 3210 can be flexibly adjusted and replaced to adapt to different specifications of the second positioning hole 13, enhancing the versatility of the tooling; the two chucks 3210 abut against the two opposite side walls of the second positioning hole 13, with balanced force, effectively limiting the radial and axial displacement of the workpiece, ensuring reliable clamping, avoiding machining vibration, and stabilizing machining accuracy.

[0067] In one embodiment of the clamp for the forklift gearbox housing of the invention, such as Figure 4 and Figure 13 As shown, the lid clamping device 4 also includes a clearance opening 46, which is disposed on the second fixing plate 41.

[0068] Specifically, there are multiple clearance openings 46, which are respectively located at both ends of the second fixing plate 41. It should be noted that the shape of the clearance opening 46 can be arc-shaped, rectangular, or irregular, and there is no limitation here.

[0069] The present invention provides a clearance opening 46 on the second fixed plate 41 to provide movement space for machining tools and fixtures, avoiding interference during machining; at the same time, it facilitates workpiece loading and unloading, observation of machining status, improves operational convenience, and adapts to different machining conditions.

[0070] Depending on the different structures of the housing 11 and the cover 14 of the gearbox housing 1, the clamps of the forklift gearbox housing of the present invention are set in different positions, which are described in detail below.

[0071] Example 1

[0072] In this embodiment, as Figures 3 to 9 As shown, the first positioning hole 12 is located on the upper side of the first end of the housing 11 (e.g., Figure 9 (as shown in the image), the second positioning hole 13 is located at the middle position near the second end of the housing 11 (as shown in the image). Figure 9 (The location shown).

[0073] In this embodiment, the three-jaw chuck 323 is disposed on the left side of the first end of the first fixing plate 31 (e.g., Figure 5 (As shown in the image), the first positioning block 321 abuts against the outer peripheral wall of the three-jaw chuck 323. The centering chuck 327 is located on the right side of the second end of the first fixing plate 31 (as shown in the image). Figure 5As shown in the figure, there are two second positioning blocks 322. One second positioning block 322 abuts against the first side of the centering chuck 327, and the other second positioning block 322 is located on the second side of the centering chuck 327 and is located outside the centering chuck 327, that is, it is not parallel to the centering chuck 327.

[0074] Furthermore, the box clamping device 3 also includes multiple limiting rods 34, and the three-jaw chuck 323 is located in the middle of the first fixed plate 31 or on one side of the first fixed plate 31. The multiple limiting rods 34 are arranged on the outside of the three-jaw chuck 323 along the length direction.

[0075] Specifically, multiple limiting rods 34 are arranged along the length direction on both sides of the three-jaw chuck 323, and there are four limiting rods 34, with two limiting rods 34 on each side of the three-jaw chuck 323. Among them, two limiting rods 34 are arranged close to the centering chuck 327.

[0076] The limiting rod 34 of the present invention is arranged around the outside of the three-jaw chuck 323, which can form an external auxiliary limit on the housing 11, further restricting the deflection and movement of the workpiece; in addition, the limiting rod 34, together with the three-jaw chuck 323 and the centering chuck 327, forms multiple positioning constraints, which enhances the clamping stability and effectively improves the machining accuracy; at the same time, the limiting rod 34 has a flexible layout, adaptable to different installation positions of the three-jaw chuck 323, and has good structural adaptability.

[0077] Furthermore, the first clamping assembly 33 includes a fourth fixing block 331, a fifth fixing block 332, a first clamping plate 333, and a second clamping plate 334. The fourth fixing block 331 and the fifth fixing block 332 are located at both ends of the first fixing plate 31. The fourth fixing block 331 is located on the outside of the three-jaw chuck 323, and the fifth fixing block 332 is located on both sides of the centering chuck 327 or on the same side of the centering chuck 327. The height of the fourth fixing block 331 is greater than the height of the fifth fixing block 332. The first clamping plate 333 and the second clamping plate 334 are rotatably disposed on the fourth fixing block 331 and the fifth fixing block 332 for clamping the box body 11.

[0078] Specifically, the other second positioning block 322 mentioned above is parallel to the fifth fixing block 332. It should be noted that both the first clamping plate 333 and the second clamping plate 334 are driven by an external drive system. The drive system drives the first clamping plate 333 and the second clamping plate 334 to rotate, so that the first clamping plate 333 and the second clamping plate 334 act on both ends of the housing 11. The drive system can be hydraulic drive, electric motor drive or other drive methods. This is a conventional solution and will not be described in detail here.

[0079] The present invention uses a fourth fixing block 331 and a fifth fixing block 332 arranged at different heights at both ends of the first fixing plate 31, and a rotatable first clamping plate 333 and a second clamping plate 334 respectively provided on the fourth fixing block 331 and the fifth fixing block 332, to form a pressing constraint on the box 11 from different heights and directions, and the limiting coverage is wider.

[0080] The rotating first clamping plate 333 and the second clamping plate 334 open and close flexibly, making it convenient to load and unload workpieces and ensuring uniform clamping force, further preventing workpiece displacement and overturning during processing; the fourth fixing block 331 and the fifth fixing block 332 have diverse layouts and can be adapted to different shaped boxes 11, thus improving the adaptability of the fixture.

[0081] Furthermore, such as Figure 1 As shown, the support platform 2 includes a mold base 21, a mounting plate 22 and a positioning plate 23. The mounting plate 22 is horizontally disposed on the mold base 21, and the positioning plate 23 is vertically disposed on the mounting plate 22. The mounting plate 22 is provided with a plurality of first fixing bosses 24, and the positioning plate 23 is provided with a plurality of second fixing bosses 25.

[0082] The box clamping device 3 also includes multiple first mounting holes 35 and a first lifting ring 36. The multiple first mounting holes 35 are respectively located on the outer edge of the first fixing plate 31, and the first lifting ring 36 is located on the first end of the first fixing plate 31. The first fixing boss 24 is inserted into the first mounting hole 35. By providing multiple first mounting holes 35 on the outer edge of the first fixing plate 31 and cooperating with the first fixing boss 24 on the mounting plate 22, the present invention achieves rapid positioning and assembly, accurate installation and alignment, and firm connection, facilitating the overall disassembly, relocation, and combination and debugging of the fixture, and adapting to the needs of different processing stations.

[0083] The lid clamping device 4 also includes multiple second mounting holes 44 and a second lifting ring 45. The multiple second mounting holes 44 are respectively provided on the outer edge of the second fixing plate 41, and the second lifting ring 45 is provided on the first end of the second fixing plate 41. The second fixing boss 25 is inserted into the second mounting hole 44. By providing multiple second mounting holes 44 on the outer edge of the second fixing plate 41, the present invention can achieve quick fixing of the second fixing plate 41 to the positioning plate 23.

[0084] In this embodiment, the first lifting ring 36 is located on the right side of the first end of the first fixing plate 31 (e.g., Figure 5 (as shown in the figure), the second lifting ring 45 is located at the middle position of the first end of the second fixing plate 41.

[0085] By setting a first lifting ring 36 and a second lifting ring 45 respectively, the present invention can complete the overall lifting, transfer and loading / unloading of the box clamping device 3 and the box cover clamping device 4 with the help of lifting equipment, which greatly reduces the intensity of manual handling and improves the efficiency of tooling relocation, maintenance and replacement.

[0086] Furthermore, in this embodiment, as Figure 8 As shown, the bottom of the box cover 14 has beveled edges on both sides, the outer edge of the first side of the box cover 14 is a straight structure, and the outer edge of the second side of the box cover 14 is a bent structure.

[0087] The upper end of the fixed platform 421 has a clearance groove, which is an isosceles trapezoid; the third fixed block 423 is arranged along the length of the second fixed plate 41.

[0088] Specifically, the structure of the clearance groove matches the bottom of the cover 14.

[0089] The present invention provides an isosceles trapezoidal clearance groove that matches the bottom of the box cover 14, so that the bottom of the box cover 14 can be stably placed on the fixed platform 421; the third fixing block 423 is arranged in an orderly manner along the length direction, forming a continuous multi-point limit on the box cover 14, with uniform force, effectively preventing workpiece displacement and rotation, and strong clamping stability.

[0090] Furthermore, the second clamping assembly 43 includes a plurality of connecting blocks 431 and a pressure plate 432. The plurality of connecting blocks 431 are respectively located at the second end of the second fixing plate 41 and on both sides of the second fixing plate 41. The pressure plate 432 is rotatably mounted on the connecting blocks 431 and is used to fix the box cover 14.

[0091] Specifically, in this embodiment, there are five connecting blocks 431 and five pressure plates 432. One connecting block 431 and one pressure plate 432 are located at the second end of the second fixing plate 41, and the other four pressure plates 432 are located on both sides of the second fixing plate 41.

[0092] It should be noted that the pressure plates 432 are all driven by an external drive system. The drive system drives the pressure plates 432 to rotate so that the pressure plates 432 act on both ends of the housing 11. The drive system can be hydraulic drive, motor drive or other drive methods. This is a conventional solution and will not be described in detail here.

[0093] The present invention, through the connection block 431 and the rotatable pressure plate 432, can press and fix the box cover 14 from multiple directions, with comprehensive positioning and uniform force, effectively preventing the workpiece from loosening or shifting during processing.

[0094] Furthermore, the second clamping assembly 43 also includes a third positioning block 433, a fourth positioning block 434, a positioning rod 435, and a top head 436. The third positioning block 433 and the fourth positioning block 434 are located in the middle of the second fixed plate and are respectively located on both sides of the second fixed plate. The positioning rod 435 and the top head 436 are respectively arranged opposite to each other on the third positioning block 433 and the fourth positioning block 434. The top head 436 is telescopically arranged on the fourth positioning block 434, and the positioning rod 435 and the top head 436 are used to clamp the box cover 14.

[0095] In this embodiment, the top head 436 corresponds to the second side of the cover 14, and the positioning rod 435 corresponds to the first side of the cover 14. The third positioning block 433 and the fourth positioning block 434 are positioned near the middle of the second fixed plate in the length direction and near the center of the second fixed plate in the width direction. It should be noted that the top head 436 is driven by an external drive system, which drives the top head 436 to move so that the top head 436 acts on the cover 14. The drive system can be hydraulic drive, motor drive, or other drive methods, which are conventional solutions and will not be described in detail here.

[0096] When the box cover 14 to be processed is placed vertically on the fixed platform 421 of the box cover clamping device 4, after alignment with the help of the roller 422, the drive system drives the top head 436 to move so that the top head 436 can act on the second side of the lower box cover 14, and the positioning rod 435 acts on the first side of the box cover 14, forming a bidirectional precise centering and clamping positioning of the box cover 14. This can effectively limit the offset and rotation of the box cover 14 during the processing, prevent the workpiece from moving slightly, and greatly improve the clamping accuracy and positioning consistency of the box cover 14.

[0097] Furthermore, the retractable top head 436 can adaptively adjust the clamping distance according to the size of different specifications of the box cover 14, adapting to the clamping and processing of multiple models of box covers 14, effectively improving the versatility of the fixture, and meeting the production needs of small batches and multiple varieties of forklift products.

[0098] Meanwhile, the centrally aligned clamping, combined with the surrounding pressure plates 432 for auxiliary fixation, forms a multi-point all-round clamping structure, ensuring that the box cover 14 is subjected to uniform force and is firmly clamped, avoiding dimensional errors caused by processing vibrations, effectively guaranteeing the quality of workpiece processing. Moreover, the structure layout is reasonable and the adjustment operation is simple, which can significantly improve the efficiency of workpiece loading and unloading and the overall processing production efficiency.

[0099] Example 2

[0100] In this embodiment, as Figures 10 to 15 As shown, the first positioning hole 12 is located on the lower side of the first end of the housing 11 (e.g., Figure 15 (as shown in the image), the second positioning hole 13 is located near the upper side of the second end of the housing 11 (as shown in the image). Figure 15 (The location shown).

[0101] In this embodiment, the three-jaw chuck 323 is disposed on the right side of the first end of the first fixing plate 31 (e.g., Figure 11 (As shown in the image), the first positioning block 321 abuts against the outer peripheral wall of the three-jaw chuck 323. The centering chuck 327 is located on the right side of the second end of the first fixing plate 31 (as shown in the image). Figure 11As shown in the figure, there are two second positioning blocks 322, which are located on both sides of the centering chuck 327. The two second positioning blocks 322 are staggered with the centering chuck 327 and are not parallel to the centering chuck 327.

[0102] Furthermore, the box clamping device 3 also includes multiple limiting rods 34, and the three-jaw chuck 323 is located in the middle of the first fixed plate 31 or on one side of the first fixed plate 31. The multiple limiting rods 34 are arranged on the outside of the three-jaw chuck 323 along the length direction.

[0103] Specifically, multiple limiting rods 34 are arranged along the length direction on both sides of the three-jaw chuck 323, and there are four limiting rods 34, with two limiting rods 34 on each side of the three-jaw chuck 323. Among them, three limiting rods 34 are arranged on both sides of the three-jaw chuck 323, and the other limiting rod 34 is arranged on the outer side of the centering chuck 327.

[0104] The limiting rod 34 of the present invention is arranged around the outside of the three-jaw chuck 323, which can form an external auxiliary limit on the housing 11, further restricting the deflection and movement of the workpiece; in addition, the limiting rod 34, together with the three-jaw chuck 323 and the centering chuck 327, forms multiple positioning constraints, which enhances the clamping stability and effectively improves the machining accuracy; at the same time, the limiting rod 34 has a flexible layout, adaptable to different installation positions of the three-jaw chuck 323, and has good structural adaptability.

[0105] Furthermore, the first clamping assembly 33 includes a fourth fixing block 331, a fifth fixing block 332, a first clamping plate 333, and a second clamping plate 334. The fourth fixing block 331 and the fifth fixing block 332 are located at both ends of the first fixing plate 31. The fourth fixing block 331 is located on the outside of the three-jaw chuck 323, and the fifth fixing block 332 is located on both sides of the centering chuck 327 or on the same side of the centering chuck 327. The height of the fourth fixing block 331 is greater than the height of the fifth fixing block 332. The first clamping plate 333 and the second clamping plate 334 are rotatably disposed on the fourth fixing block 331 and the fifth fixing block 332 for clamping the box body 11.

[0106] In this embodiment, one of the second positioning blocks 322 is parallel to the fifth fixing block 332. It should be noted that both the first clamping plate 333 and the second clamping plate 334 are driven by an external drive system. The drive system drives the first clamping plate 333 and the second clamping plate 334 to rotate, so that the first clamping plate 333 and the second clamping plate 334 act on both ends of the housing 11. The drive system can be hydraulic drive, motor drive or other drive methods. This is a conventional solution and will not be described in detail here.

[0107] The present invention uses a fourth fixing block 331 and a fifth fixing block 332 arranged at different heights at both ends of the first fixing plate 31, and a rotatable first clamping plate 333 and a second clamping plate 334 respectively provided on the fourth fixing block 331 and the fifth fixing block 332, to form a pressing constraint on the box 11 from different heights and directions, and the limiting coverage is wider.

[0108] The support platform 2 in this embodiment is the same as the support platform 2 in Embodiment 1, and will not be described again here.

[0109] The box clamping device 3 also includes multiple first mounting holes 35 and a first lifting ring 36. The multiple first mounting holes 35 are respectively located on the outer edge of the first fixing plate 31, and the first lifting ring 36 is located on the first end of the first fixing plate 31. The first fixing boss 24 is inserted into the first mounting hole 35. By providing multiple first mounting holes 35 on the outer edge of the first fixing plate 31 and cooperating with the first fixing boss 24 on the mounting plate 22, the present invention achieves rapid positioning and assembly, accurate installation and alignment, and firm connection, facilitating the overall disassembly, relocation, and combination and debugging of the fixture, and adapting to the needs of different processing stations.

[0110] The lid clamping device 4 also includes multiple second mounting holes 44 and a second lifting ring 45. The multiple second mounting holes 44 are respectively provided on the outer edge of the second fixing plate 41, and the second lifting ring 45 is provided on the first end of the second fixing plate 41. The second fixing boss 25 is inserted into the second mounting hole 44. By providing multiple second mounting holes 44 on the outer edge of the second fixing plate 41, the present invention can achieve quick fixing of the second fixing plate 41 to the positioning plate 23.

[0111] In this embodiment, the first lifting ring 36 is located on the left side of the first end of the first fixing plate 31 (e.g., Figure 11 (as shown in the figure), the second lifting ring 45 is located at the middle position of the first end of the second fixing plate 41, and multiple second mounting holes 44 are respectively located at the four corners of the second fixing plate 41.

[0112] By setting a first lifting ring 36 and a second lifting ring 45 respectively, the present invention can complete the overall lifting, transfer and loading / unloading of the box clamping device 3 and the box cover clamping device 4 with the help of lifting equipment, which greatly reduces the intensity of manual handling and improves the efficiency of tooling relocation, maintenance and replacement.

[0113] Furthermore, in this embodiment, as Figure 14 As shown, the bottom of the box cover 14 has beveled edges on both sides, the outer edge of the first side of the box cover 14 is a bent structure, and the outer edge of the second side of the box cover 14 is a straight structure.

[0114] The upper end of the fixed platform 421 has a clearance groove, which is an isosceles trapezoid; the third fixed block 423 is arranged along the length of the second fixed plate 41.

[0115] Specifically, the structure of the clearance groove matches the bottom of the cover 14.

[0116] The present invention provides an isosceles trapezoidal clearance groove that matches the bottom of the box cover 14, so that the bottom of the box cover 14 can be stably placed on the fixed platform 421; the third fixing block 423 is arranged in an orderly manner along the length direction, forming a continuous multi-point limit on the box cover 14, with uniform force, effectively preventing workpiece displacement and rotation, and strong clamping stability.

[0117] Furthermore, the second clamping assembly 43 includes a plurality of connecting blocks 431 and a pressure plate 432. The plurality of connecting blocks 431 are respectively located at the second end of the second fixing plate 41 and on both sides of the second fixing plate 41. The pressure plate 432 is rotatably mounted on the connecting blocks 431 and is used to fix the box cover 14.

[0118] Specifically, in this embodiment, there are four connecting blocks 431 and four pressure plates 432, with the four pressure plates 432 located on both sides of the second fixing plate 41.

[0119] It should be noted that the pressure plates 432 are all driven by an external drive system. The drive system drives the pressure plates 432 to rotate so that the pressure plates 432 act on both ends of the housing 11. The drive system can be hydraulic drive, motor drive or other drive methods. This is a conventional solution and will not be described in detail here.

[0120] The present invention, through the connection block 431 and the rotatable pressure plate 432, can press and fix the box cover 14 from multiple directions, with comprehensive positioning and uniform force, effectively preventing the workpiece from loosening or shifting during processing.

[0121] Furthermore, the second clamping assembly 43 also includes a third positioning block 433, a fourth positioning block 434, a positioning rod 435, and a top head 436. The third positioning block 433 and the fourth positioning block 434 are located in the middle of the second fixed plate and are respectively located on both sides of the second fixed plate. The positioning rod 435 and the top head 436 are respectively arranged opposite to each other on the third positioning block 433 and the fourth positioning block 434. The top head 436 is telescopically arranged on the fourth positioning block 434, and the positioning rod 435 and the top head 436 are used to clamp the box cover 14.

[0122] In this embodiment, the top head 436 corresponds to the first side of the box cover 14, and the positioning rod 435 corresponds to the second side of the box cover 14; the third positioning block 433 and the fourth positioning block 434 are disposed near the top of the second fixing block in the length direction and near the center of the second fixing block in the width direction. The usage of the second clamping component 43 in this embodiment is the same as that in Embodiment 1, and will not be described again here.

[0123] It should be noted that the top head 436 is driven by an external drive system. The drive system drives the top head 436 to move so that the top head 436 acts on the cover 14. The drive system can be hydraulic drive, electric motor drive or other drive methods. This is a conventional solution and will not be described in detail here.

[0124] This invention enables the box body 11 and box cover 14 to be machined together on a single fixture, and also enables flexible compatibility and matching processing of similar products, solving the actual production scheduling problem, reducing the number of fixtures to be manufactured, reducing fixture investment costs and the difficulty of changing production, and improving production efficiency.

[0125] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A clamp for a forklift gearbox housing, characterized in that, The housing of the forklift gearbox includes a housing and a cover; the clamp includes a support platform, a housing clamping device placed horizontally on the support platform, and a cover clamping device placed vertically on the support platform. The box clamping device includes a first fixing plate, a first fixing component, and a first clamping component. The first fixing component includes a first positioning block, a second positioning block, a three-jaw chuck, and a centering chuck. The first positioning block and the three-jaw chuck are disposed at the first end of the first fixing plate, with the three-jaw chuck close to the first positioning block. The second positioning block and the centering chuck are disposed at the second end of the first fixing plate. The box is placed on the first positioning block and the second positioning block. The three-jaw chuck and the centering chuck are used to fix the box. The first clamping component is disposed at both ends of the first fixing plate and is used to clamp the box. The lid clamping device includes a second fixing plate, a second fixing component, and a second clamping component. The second fixing component includes a fixing platform, rollers, and multiple third fixing blocks. The fixing platform is located at the bottom of the second fixing plate, and the rollers are disposed at both ends of the fixing platform. The multiple third fixing blocks and the second clamping component are located around the second fixing plate. The second clamping component is used to fix the lid.

2. The clamp for the forklift gearbox housing according to claim 1, characterized in that, A first positioning hole is provided at the first end of the box body; The three-jaw chuck includes a base plate, a jaw body, and three jaw heads. The base plate is fixed on the first fixing plate. The bottom of the jaw body is connected to the base plate. The three jaw heads are all movably disposed on the top of the jaw body, and the included angle between two adjacent jaw heads is 120 degrees. The three jaw heads are inserted into the first positioning hole.

3. The clamp for the forklift gearbox housing according to claim 1, characterized in that, A second positioning hole is provided at the second end of the box body; The centering chuck includes a support block, a centering clamp, and two clamps. The support block is disposed on the first fixed plate. The bottom of the centering clamp is connected to the support block. The two clamps are respectively movably disposed at both ends of the centering clamp. The two clamps are inserted into the second positioning hole and abut against the inner wall of the second positioning hole.

4. The clamp for the forklift gearbox housing according to claim 1, characterized in that, The box clamping device also includes multiple limiting rods. The three-jaw chuck is located in the middle of the first fixed plate or on one side of the first fixed plate. The multiple limiting rods are arranged on the outside of the three-jaw chuck along the length direction.

5. The clamp for the forklift gearbox housing according to claim 1, characterized in that, The first clamping assembly includes a fourth fixing block, a fifth fixing block, a first clamping plate, and a second clamping plate. The fourth fixing block and the fifth fixing block are respectively located at both ends of the first fixing plate. The fourth fixing block is located on the outside of the three-jaw chuck, and the fifth fixing block is located on both sides of the centering chuck or on the same side of the centering chuck. The height of the fourth fixing block is greater than the height of the fifth fixing block. The first clamping plate and the second clamping plate are rotatably disposed on the fourth fixing block and the fifth fixing block for clamping the box body.

6. The clamp for the forklift gearbox housing according to claim 1, characterized in that, The support platform includes a mold base, a mounting plate, and a positioning plate. The mounting plate is horizontally disposed on the mold base, and the positioning plate is vertically disposed on the mounting plate. The mounting plate is provided with a plurality of first fixing bosses, and the positioning plate is provided with a plurality of second fixing bosses. The box clamping device further includes a plurality of first mounting holes and a first lifting ring. The plurality of first mounting holes are respectively disposed on the outer edge of the first fixing plate, the first lifting ring is disposed on the first end of the first fixing plate, and the first fixing boss is inserted into the first mounting hole. The lid clamping device further includes multiple second mounting holes and a second lifting ring. The multiple second mounting holes are respectively located on the outer edge of the second fixing plate, the second lifting ring is located on the first end of the second fixing plate, and the second fixing boss is inserted into the second mounting hole.

7. The clamp for the forklift gearbox housing according to claim 1, characterized in that, The upper end of the fixed platform has a clearance groove, which is an isosceles trapezoid. The third fixing block is arranged along the length of the second fixing plate.

8. The clamp for the forklift gearbox housing according to claim 1, characterized in that, The second clamping assembly includes multiple connecting blocks and a pressure plate. The multiple connecting blocks are respectively located at the second end of the second fixing plate and on both sides of the second fixing plate. The pressure plate is rotatably mounted on the connecting blocks and is used to fix the box cover.

9. The clamp for the forklift gearbox housing according to claim 1, characterized in that, The second clamping assembly further includes a third positioning block, a fourth positioning block, a positioning rod, and a top head. The third positioning block and the fourth positioning block are located at the middle position of the second fixed plate along the length direction and are respectively located on both sides of the second fixed plate along the width direction. The positioning rod and the top head are respectively disposed on the third positioning block and the fourth positioning block. The top head is telescopically disposed on the fourth positioning block, and the positioning rod and the top head are used to clamp the box cover.

10. The clamp for the forklift gearbox housing according to claim 1, characterized in that, The lid clamping device also includes a clearance opening, which is disposed on the second fixing plate.

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