Automatic assembly equipment for active fixed wheel assembly of CVT continuously variable transmission

Abstract

The present invention relates to the field of transmission assembly technology, specifically to an automatic assembly device for an active fixed wheel assembly of a CVT continuously variable transmission, including a base plate, a square frame, a guiding mechanism and a clamping unit. In the present invention, a pair of left clamping plates in the clamping unit clamp the active fixed wheel circumferentially, and two pairs of right clamping plates clamp the fixed shaft. At the same time, the rectangular block and the bonding plate are pressed against each other, so that the axes of the active fixed wheel and the fixed shaft are finally collinear, thereby improving the assembly accuracy. Secondly, while all the spiral plates are stretched and pressed against the inner wall of the mounting hole to assist in the clamping process of the active fixed wheel, the reference plate on the spiral plate cooperates with the fixed shaft, and the spiral plate is pushed out of the mounting hole, and the fixed shaft enters the mounting hole. By keeping the fixed shaft and the reference plate in close contact, the guiding effect on the fixed shaft is always maintained, ensuring that the axes of the fixed shaft and the fixed wheel are always collinear, thereby improving the assembly accuracy and meeting the assembly requirements.

Description

Technical Field

[0001] The invention relates to the technical field of transmission assembly, in particular to automatic assembly equipment for an active fixed wheel assembly of a CVT continuously variable transmission. Background Art

[0002] CVT continuously variable transmission is an automatic transmission that can achieve continuous changes in transmission ratio. It transmits power through variable diameter pulleys and metal belts, thereby achieving smoother power output and better fuel economy.

[0003] In the CVT continuously variable transmission system, the active fixed wheel assembly is one of the key components. It works together with the passive adjustable wheel to achieve the speed change function by changing the contact radius of the transmission belt between the two wheels. The active fixed wheel is usually fixedly assembled with the active fixed shaft in the system component, and the active fixed shaft is connected to the output shaft of the engine. The two are responsible for transmitting the power generated by the engine to the passive wheel.

[0004] In the process of producing a continuously variable transmission, it is necessary to assemble the active fixed wheel and the fixed shaft. A threaded groove is provided in the mounting hole on the active fixed wheel, and a section of the fixed shaft that is inserted into the active fixed wheel is a threaded section. In the current assembly process, the fixed shaft is rotated and tightened into the mounting hole to complete the assembly process of the two. However, the following problems exist in the above assembly process: Since the existing active fixed wheel assembly is the main component for transmitting power in the continuously variable transmission, the assembly accuracy of the active fixed wheel and the fixed shaft is relatively high. In the current assembly process, the two are tightened and assembled manually using tools. In this process, the limiting clamping and guiding assembly of the active fixed wheel and the fixed shaft are insufficient, which can easily affect the overall assembly accuracy and affect the power transmission efficiency of the active fixed wheel assembly in subsequent use. Summary of the invention

[0005] Based on this, it is necessary to provide an automatic assembly device for the active fixed wheel assembly of a CVT continuously variable transmission, aiming to solve the problems of the above-mentioned prior art.

[0006] The present application provides an automatic assembly device for an active fixed wheel assembly of a CVT continuously variable transmission, comprising a base plate, wherein the upper surface of the base plate is provided with two square frames distributed on the left and right, the left square frame is fixedly provided on the base plate, and the right square frame is slidably provided on the base plate on the left and right, a guiding mechanism is commonly provided on the two square frames, and a clamping unit for clamping a fixed wheel and a fixed shaft is commonly provided on the two square frames.

[0007] The clamping unit includes a sliding block, and a plurality of sliding blocks are slidably arranged on the square frame and are evenly distributed circumferentially about the center line of the square frame. The opposing surfaces of the two opposing sliding blocks on the left and right are fixedly provided with an arc-shaped clamping plate 1, and the inner arc surface of the right clamping plate 1 is fixedly provided with a clamping plate 2 for clamping the fixed shaft through a connecting strip.

[0008] The guiding mechanism includes a movable column, and a movable column with an axis colinear with the center line of the square frame is movably installed on the left side of the square frame. A circular plate is fixedly provided on the right end face of the movable column, and a plurality of circumferentially evenly distributed threaded plates are slidably provided on the circular plate through a moving block. The threaded plate cooperates with the threaded groove on the fixed wheel, and a reference plate is fixedly provided on the right end face of the threaded plate.

[0009] A driving unit is commonly arranged on the two square frames.

[0010] According to an advantageous embodiment, the guiding mechanism further comprises an inclined plate, and the end surface of the reference plate facing the axis of the movable column is fixedly provided with the inclined plate, and the inclined plate approaches the axis of the movable column from left to right.

[0011] According to a favorable embodiment, the clamping unit further includes a rotating rod colinear with the axis of the movable column, and square blocks are provided on the rotating rod and the movable column for left and right sliding sliding sleeves, and two square frames are located between the two square blocks, and hinge strips are hingedly provided between the square blocks and adjacent sliding blocks, and a return spring is fixedly provided between each sliding block and the corresponding square frame.

[0012] According to a favorable embodiment, the driving unit includes a fixed block, the rear end face of the left square frame and the front end face of the right square frame are both fixedly provided with a fixed block, a plug-in column with an axis extending from left to right is fixedly provided on the fixed block, the front end face of the left square block and the rear end face of the right square block are both fixedly provided with a plug-in board, a plug-in hole is provided on the plug-in board, a circular mounting block is fixedly sleeved on the plug-in column, and a spring 2 mounted on the corresponding plug-in column is fixedly provided on the end face of the mounting block facing the corresponding plug-in board.

[0013] According to a favorable embodiment, the clamping unit also includes a rectangular block, the inner arc surface of the clamping plate 1 on the left side is fixedly provided with a rectangular block, a movable column is installed on the connecting strip which slides left and right and passes through, a fitting plate is fixedly provided on the left end face of the movable column, and a spring 3 which is mounted on the movable column is fixedly provided between the fitting plate and the connecting strip.

[0014] According to a favorable embodiment, the driving unit also includes a wedge-shaped table, and the right end surface of the square frame on the left side is provided with a wedge-shaped table by sliding left and right through a connecting rod, the wedge-shaped table is movably sleeved on the movable column, the wedge-shaped table is composed of two left-right symmetrical circular tables integrally formed, and the left and right ends of the wedge-shaped table are both small-diameter ends, and the inner arc surface of the left clamping plate 1 is fixed with a matching block 1 that matches the left arc surface of the wedge-shaped table through a circular rod.

[0015] According to a favorable embodiment, the driving unit further comprises a spring telescopic rod, the left end face of the moving block is fixedly provided with a spring telescopic rod whose axis extends from left to right, the telescopic end of the spring telescopic rod is fixedly provided with a matching block 2 which matches with the arc surface on the right side of the wedge-shaped platform, and the end face of the matching block 2 facing the wedge-shaped platform and the inner arc surface of the clamping plate 2 are both movably provided with balls.

[0016] According to a favorable embodiment, the guiding mechanism also includes opposing blocks, the outer arc surface of the clamping plate is fixedly provided with opposing blocks, the right opposing block is provided with a guiding groove, and the left opposing block is fixedly provided with a guiding column with a horizontal axis and cooperating with the corresponding guiding groove.

[0017] According to a favorable embodiment, the guiding mechanism also includes a rotating group arranged on the right square frame, the rotating group includes a rotating cylinder, a rotating cylinder with an axis colinear with the axis of the rotating rod is rotatably arranged on the right square frame, the rotating rod passes through the rotating cylinder, and a truncated cone-shaped clamping platform is fixedly arranged on the left end face of the rotating cylinder, and the small diameter end of the clamping platform faces left, and the arc surface of the clamping platform is made of rubber material.

[0018] According to a favorable embodiment, the rotating group also includes a driving shaft, and the right end face of the square frame on the right side is rotatably provided with a driving shaft, and gears are fixedly sleeved on the driving shaft and the rotating cylinder, and the two gears are meshed with each other, and a transmission rod is fixedly provided on the left end face of the abutment platform, and a transmission sleeve is fixedly provided on the right end face of the circular plate, a waist-shaped groove is opened on the transmission sleeve, and a waist-shaped block is fixedly provided on the transmission rod.

[0019] In summary, the present invention includes at least one of the following beneficial effects: First, in the clamping unit of the present invention, the left clamping plate pair clamps the active fixed wheel circumferentially, and the right clamping plate pair clamps the fixed shaft, and at the same time cooperates with the mutual abutment of the rectangular block and the bonding plate, so that the axes of the active fixed wheel and the fixed shaft are finally made collinear, thereby improving the assembly accuracy; secondly, while all the spiral plates are stretched and pressed against the inner wall of the mounting hole to assist in the clamping process of the active fixed wheel, the reference plate on the spiral plate cooperates with the fixed shaft, the spiral plate is pushed out of the mounting hole, and the fixed shaft enters the mounting hole, and the guiding effect of the fixed shaft is always maintained by the fixed shaft and the reference plate are always in close contact, ensuring that the axes of the fixed shaft and the fixed wheel are always collinear, thereby improving the assembly accuracy and meeting the assembly requirements.

[0020] 2. In the present invention, all the spiral plates are stretched out and pressed against the inner wall of the mounting hole, so that all the inclined plates are spread out synchronously. In the process of the fixed shaft moving leftward into the mounting hole, the axis of the fixed shaft is limited and guided through the cooperation between the inclined surface of the inclined plate and the fixed shaft, so that the axis of the fixed shaft remains in line with the axis of the movable column as it gradually moves leftward, ensuring that the fixed shaft and the fixed wheel can be accurately docked and assembled.

[0021] 3. In the present invention, the right square frame is moved to the left, so that the plug-in column is inserted into the plug-in hole and the spring 2 is compressed, thereby driving the movement and clamping process of the clamping plate 1. Secondly, the plug-in column is inserted into the plug-in hole, so that the two square frames, two fixed blocks and two plug-in columns together form a stable rectangular frame, ensuring the horizontality of the process of the right square frame driving the fixed axis to move to the left, thereby improving the stability of the process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the three-dimensional structure of an automatic assembly device for an active fixed wheel assembly of a CVT continuously variable transmission provided in accordance with an embodiment of the present invention when assembling a fixed wheel and a fixed shaft is shown.

[0024] Figure 2 A partially cutaway three-dimensional structural schematic diagram of an automatic assembly device for an active fixed wheel assembly of a CVT continuously variable transmission provided according to an embodiment of the present invention is shown (the fixed wheel is omitted).

[0025] Figure 3 A partial cross-sectional front view between a square frame, a wedge-shaped table and a threaded plate provided according to an embodiment of the present invention is shown.

[0026] Figure 4 The embodiment of the present invention provides Figure 3 Enlarged view of point A in the middle.

[0027] Figure 5 A schematic diagram of the three-dimensional structure between a circular plate, a spiral plate and an inclined plate provided according to an embodiment of the present invention is shown.

[0028] Figure 6 A schematic diagram of a partial cross-sectional three-dimensional structure among a transmission rod, a transmission sleeve and a rotating cylinder provided according to an embodiment of the present invention is shown.

[0029] Figure 7The embodiment of the present invention provides Figure 6 Enlarged view of point B in the middle.

[0030] Figure 8 A schematic diagram showing the states of the threaded plate, the fixing wheel and the fixing shaft provided in an embodiment of the present invention, including the three processes of placement, guiding and assembly.

[0031] The above drawings include the following reference numerals:

[0032] 1. Bottom plate; 2. Square frame; 3. Clamping unit; 30. Sliding block; 31. Clamping plate 1; 32. Clamping plate 2; 33. Telescopic rod; 330. Square block; 331. Articulated strip; 332. Return spring; 34. Rectangular block; 340. Moving column; 341. Laminating plate; 342. Spring 3; 4. Guide mechanism; 40. Movable column; 400. Circular plate; 401. Threaded plate; 402. Reference plate; 41. Inclined plate; 42. Opposing block; 420. Guide column; 43. Rotating Group; 430, rotating cylinder; 431, pressing platform; 432, driving shaft; 433, gear; 434, transmission rod; 435, transmission sleeve; 436, waist-shaped groove; 437, waist-shaped block; 5, driving unit; 50, fixed block; 500, plug-in column; 501, plug-in plate; 502, mounting block; 503, spring two; 51, wedge-shaped platform; 510, matching block one; 52, spring telescopic rod; 520, matching block two; 53, ball; 6, fixed wheel; 60, mounting hole; 7, fixed shaft. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0034] like Figure 1 and Figure 2 As shown, an automatic assembly device for an active fixed wheel assembly of a CVT continuously variable transmission includes a base plate 1, and two square frames 2 distributed left and right are arranged on the upper end surface of the base plate 1. The left square frame 2 is fixedly arranged on the base plate 1, and the right square frame 2 is slidably arranged on the base plate 1 left and right. The right square frame 2 is driven by an external hydraulic cylinder (not shown in the figure) to move left and right. A guiding mechanism 4 is commonly arranged on the two square frames 2, and a clamping unit 3 for clamping a fixed wheel 6 and a fixed shaft 7 is commonly arranged on the two square frames 2.

[0035] like Figure 1 and Figure 2As shown, the clamping unit 3 includes a sliding block 30, and each of the square frames 2 is slidably provided with a plurality of sliding blocks 30 uniformly distributed circumferentially about the center line of the square frame 2, and arc-shaped clamping plates 1 31 are fixedly provided on the opposite surfaces of the two opposite sliding blocks 30 on the left and right, and a clamping plate 2 32 for clamping the fixed shaft 7 is fixedly provided on the inner arc surface of the right clamping plate 1 31 through a connecting strip.

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, the guide mechanism 4 includes a movable column 40, and the square frame 2 on the left side is movably installed with a movable column 40 whose axis is colinear with the center line of the square frame 2. The movable column 40 can rotate and move, and a circular plate 400 is fixedly provided on the right end face of the movable column 40. A plurality of circumferentially uniformly distributed threaded plates 401 are slidably provided on the circular plate 400 through a moving block, and the threaded plate 401 moves along the radial direction of the circular plate 400, and the threaded plate 401 cooperates with the threaded groove on the fixed wheel 6, and a reference plate 402 is fixedly provided on the right end face of the threaded plate 401. It should be noted that the circular plate 400 is driven by an external electric push rod (not shown in the figure) to move left and right.

[0037] like Figure 1 As shown, a driving unit 5 is commonly provided on the two square frames 2 .

[0038] During operation, the staff first places the fixed wheel 6 to be assembled between all the clamping plates 1 31 on the left side, and places the fixed shaft 7 between all the clamping plates 2 32. The external hydraulic cylinder works to move the right square frame 2 to the left, and the driving unit 5 makes all the clamping plates 1 31 on the left cooperate with each other to clamp the fixed wheel 6, and all the clamping plates 1 31 on the right side cooperate with each other to make the corresponding clamping plates 2 32 clamp the fixed shaft 7, so that the axis of the fixed wheel 6 is in line with the axis of the fixed shaft 7.

[0039] During the above clamping process, the driving unit 5 operates while all the threaded plates 401 drive the reference plates 402 thereon to move right synchronously, so that all the reference plates 402 are located in the mounting hole 60 of the fixed wheel 6 and the reference plates 402 are tightly attached to the inner wall of the mounting hole 60, that is, all the reference plates 402 cooperate with each other to open the fixed wheel 6, which plays an auxiliary role in the clamping and fixing process of the fixed wheel 6, and at the same time, all the threaded plates 401 together constitute a threaded part that cooperates with the inner thread of the mounting hole 60, and then the driving unit 5 works to make the circular plate 400 drive the threaded plate 401 to rotate forward synchronously, and at the same time, the external electric push rod works to make 400 drive the threaded plate 401 to move right, and all the threaded plates 401 rotate and gradually move right into the mounting hole 60, and finally the threaded plate 401 and the reference plate 402 are both located in the mounting hole 60.

[0040] As the right square frame 2 continues to move left, the right square frame 2 drives the fixed shaft 7 thereon to move left and contact the reference plate 402. At this time, the left end of the fixed shaft 7 is pressed against the right end of the reference plate 402, that is, the fixed wheel 6 and the left and right ends of the fixed shaft 7 are pressed against each other. Then the driving unit 5 works to make the circular plate 400 and the fixed shaft 7 rotate synchronously, so that the fixed shaft 7 is gradually screwed into the mounting hole 60, and the left circular plate 400 drives the threaded plate 401 to gradually withdraw from the mounting hole 60 (see Figure 8 ), during the installation process of the above-mentioned fixed shaft 7 and the fixed wheel 6, the guidance of the fixed shaft 7 is always guaranteed to ensure that the axes of the two are always in line, meeting the required assembly requirements.

[0041] like Figure 1 , Figure 3 and Figure 5 As shown, the guide mechanism 4 further includes an inclined plate 41 , and the end surface of the reference plate 402 facing the axis of the movable column 40 is fixedly provided with the inclined plate 41 , and the inclined plate 41 approaches the axis of the movable column 40 from left to right.

[0042] During operation, as the fixed shaft 7 moves leftward and gradually enters the mounting hole 60 of the fixed wheel 6, the left end of the fixed shaft 7 first contacts the right side inclined surface of the inclined plate 41, and the inclined surfaces of all the inclined plates 41 cooperate with each other to limit the axis of the fixed shaft 7 again, so that the axis of the fixed shaft 7 is collinear with the axis of the movable column 40 as it gradually moves leftward, eliminating the cantilever effect of the fixed shaft 7, ensuring that the fixed shaft 7 and the fixed wheel 6 can be accurately docked and assembled, and finally the fixed shaft 7 moves leftward until it is in close contact with the right end of the reference plate 402.

[0043] like Figure 1 and Figure 2 As shown, the clamping unit 3 also includes a rotating rod 33 that is colinear with the axis of the movable column 40, and square blocks 330 are slidably sleeved on the rotating rod 33 and the movable column 40, and the two square frames 2 are located between the two square blocks 330, and the square blocks 330 and the adjacent sliding blocks 30 are hingedly provided with hinge strips 331, and a return spring 332 is fixedly provided between each sliding block 30 and the corresponding square frame 2.

[0044] like Figure 1 , Figure 3 and Figure 5As shown, the driving unit 5 includes a fixed block 50, the rear end face of the left square frame 2 and the front end face of the right square frame 2 are both fixedly provided with the fixed block 50, a plug-in column 500 with an axis extending from left to right is fixedly provided on the fixed block 50, the front end face of the left square block 330 and the rear end face of the right square block 330 are both fixedly provided with a plug-in board 501, the plug-in hole is opened on the plug-in board 501, a circular mounting block 502 is fixedly sleeved on the plug-in column 500, and a spring 2 503 sleeved on the corresponding plug-in column 500 is fixedly provided on the mounting block 502 facing the end face of the corresponding plug-in board 501.

[0045] After the fixed wheel 6 and the fixed shaft 7 are initially placed, the external hydraulic cylinder works to move the right square frame 2 to the left, and the square frame 2 drives the fixed block 50 and the plug-in column 500 thereon to move synchronously, so that the moving state between the fixed block 50 and its corresponding plug-in board 501 are close to each other, and the plug-in column 500 is inserted into the plug-in hole. At this time, the two square frames 2, the two fixed blocks 50 and the two plug-in columns 500 together form a stable rectangular frame, ensuring the horizontality of the process of the right square frame 2 driving the fixed shaft 7 to move to the left, thereby improving stability.

[0046] As the right square frame 2 continues to move, the second spring 503 contacts the plug-in board 501, and the mounting block 502 gradually approaches the plug-in board 501 and compresses the second spring 503. The elastic force generated by the compression of the second spring 503 causes the plug-in board 501 to move away from the adjacent square frame 2, thereby causing the plug-in board 501 to drive the square block 330 thereon to move synchronously. The square block 330 pulls the hinge bar 331 thereon, so that all the sliding blocks 30 move toward the direction close to the axis of the movable column 40, and the sliding block 30 drives the clamping plate 1 31 thereon. The sliding block 30 moves synchronously, that is, all the clamping plates 31 on the left side clamp the fixed wheel 6, and all the clamping plates 31 on the right side drive the clamping plates 32 thereon to clamp the fixed shaft 7. The sliding block 30 compresses the corresponding return spring 332, causing the return spring 332 to deform. Therefore, after the subsequent assembly is completed, the elastic force generated by the deformation of the return spring 332 enables the sliding block 30 to drive the clamping plate 31 thereon to reset, thereby releasing the clamping of the fixed wheel 6 and the fixed shaft 7, and then taking out the assembled fixed wheel 6 and the fixed shaft 7.

[0047] like Figure 1 and Figure 2 As shown, the clamping unit 3 also includes a rectangular block 34, and the inner arc surface of the clamping plate 31 on the left side is fixedly provided with a rectangular block 34, and a movable column 340 is installed on the connecting bar to slide left and right and penetrate through it, and a fitting plate 341 is fixedly provided on the left end surface of the movable column 340, and a spring 342 mounted on the movable column 340 is fixedly provided between the fitting plate 341 and the connecting bar.

[0048] When placing the fixed wheel 6, the left end face of the fixed wheel 6 is made to be in close contact with the right end of the rectangular block 34, and the rectangular block 34 is used as the placement reference in the left and right directions. Then, in the process of the right square frame 2 moving left, the right square frame 2 drives the clamping plate 1 31, the connecting strip and the clamping plate 2 32 thereon to move left synchronously, and the connecting strip drives the movable column 340 and the bonding plate 341 thereon to move synchronously. The bonding plate 341 stops moving after contacting the fixed wheel 6, and the connecting strip continues to move. The spring three 342 is compressed, and the elastic force generated by the compression of the spring three 342 acts on the bonding plate 341, so that the bonding plate 341 presses the fixed wheel 6. Through the cooperation between all the bonding plates 341 and the rectangular block 34, the left and right directions of the fixed wheel 6 are limited and clamped, ensuring that the axis of the fixed wheel 6 is in line with the axis of the movable column 40, ensuring that the fixed wheel 6 and the fixed shaft 7 can be accurately docked and assembled.

[0049] like Figure 1 , Figure 2 and Figure 3 As shown, the driving unit 5 also includes a wedge-shaped platform 51. The right end surface of the square frame 2 on the left side is provided with a wedge-shaped platform 51 for sliding left and right through a connecting rod. The wedge-shaped platform 51 is movably sleeved on the movable column 40. The wedge-shaped platform 51 is composed of two left-right symmetrical circular platforms integrally formed, and the left and right ends of the wedge-shaped platform 51 are both small-diameter ends. The inner arc surface of the left clamping plate 31 is fixed with a matching block 510 that matches the left arc surface of the wedge-shaped platform 51 through a circular rod.

[0050] like Figure 1 , Figure 3 and Figure 4 As shown, the driving unit 5 also includes a spring telescopic rod 52, and the left end face of the moving block is fixedly provided with a spring telescopic rod 52 whose axis extends from left to right, and the telescopic end of the spring telescopic rod 52 is fixedly provided with a matching block 520 that matches the arc surface on the right side of the wedge-shaped platform 51, and the end surface of the matching block 520 facing the wedge-shaped platform 51 and the inner arc surface of the clamping plate 32 are both movably provided with balls 53, and the balls 53 on the clamping plate 32 are not shown in the figure.

[0051] In the process of the left clamping plate 3 approaching the movable column 40 and clamping the fixed wheel 6, the left clamping plate 31 drives the matching block 1 510 thereon to move synchronously, and the inclined surface of the matching block 1 510 pushes the arc surface on the left side of the wedge-shaped platform 51, so that the wedge-shaped platform 51 moves to the right, and through the cooperation between the arc surface on the right side of the wedge-shaped platform 51 and the matching block 2 520, the matching block 2 520 drives the spring telescopic rod 52 and the moving block away from the movable column 40, and the moving block drives the threaded plate 401 and the reference plate 402 thereon to move synchronously. When all the reference plates 402 cooperate with each other to contact the inner wall of the mounting hole 60 of the fixed wheel 6, the moving block stops moving, and the wedge-shaped platform 51 continues to move, so that the spring telescopic rod 52 is compressed, and the elastic force generated by the compression of the spring telescopic rod 52 makes the reference plate 402 on the moving block press against the inner wall of the mounting hole 60.

[0052] In the subsequent process of rotating the circular plate 400 and the fixed shaft 7 and assembling with the mounting hole 60 on the fixed wheel 6, the second matching block 520 rotates relative to the wedge-shaped platform 51, and the second clamping plate 32 rotates relative to the fixed shaft 7, so the friction is reduced by the provided ball 53.

[0053] It should be noted that when the threaded member composed of all the threaded plates 401 is withdrawn from the mounting hole 60, the moving block and the spring telescopic rod 52 located below will move downward under the action of their own weight.

[0054] like Figure 1 and Figure 2 As shown, the guiding mechanism 4 also includes an opposing block 42, and the outer arc surface of the clamping plate 31 is fixedly provided with an opposing block 42, a guiding groove is opened on the right opposing block 42, and a guiding column 420 with a horizontal axis and cooperating with the corresponding guiding groove is fixedly provided on the left opposing block 42.

[0055] During operation, as the right square frame 2 continues to move left, the guide column 420 is inserted into the corresponding guide groove, so that the left and right opposite clamping plates 31 are collinear in the left and right directions, thereby improving the horizontality between the fixed wheel 6 and the fixed shaft 7, assisting the assembly docking and improving the stability during the assembly process.

[0056] like Figure 1 and Figure 2 As shown, the guide mechanism 4 also includes a rotating group 43 arranged on the right square frame 2, and the rotating group 43 includes a rotating cylinder 430. The rotating cylinder 430 with an axis colinear with the axis of the rotating rod 33 is rotatably arranged on the right square frame 2, and the rotating rod 33 rotates through the rotating cylinder 430. A truncated cone-shaped clamping platform 431 is fixedly arranged on the left end surface of the rotating cylinder 430, and the small diameter end of the clamping platform 431 faces left, and the arc surface of the clamping platform 431 is made of rubber material.

[0057] like Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, the rotating group 43 also includes a driving shaft 432. The right end surface of the square frame 2 on the right side is rotatably provided with a driving shaft 432. The driving shaft 432 is connected to an external motor (not shown in the figure). A gear 433 is fixedly sleeved on the driving shaft 432 and the rotating cylinder 430. The two gears 433 are meshed with each other. A transmission rod 434 is fixedly provided on the left end surface of the abutment platform 431, and a transmission sleeve 435 is fixedly provided on the right end surface of the circular plate 400. A waist-shaped groove 436 is opened on the transmission sleeve 435, and a waist-shaped block 437 is fixedly provided on the transmission rod 434.

[0058] During the process of placing the fixed shaft 7, the staff places the right end of the fixed shaft 7 on the left side of the clamping platform 431. As the right square frame 2 moves to the left, the transmission rod 434 drives the waist block 437 to fit into the waist groove 436. During operation, after the inner wall of the mounting hole 60 on the fixed wheel 6 is stretched open in the reference plate 402, the external motor drives the driving shaft 432 and the gear 433 thereon to reverse. Through the mutual engagement of the two gears 433, the other gear 433 drives the rotating cylinder 430 to rotate forward synchronously. The rotating cylinder 430 drives the circular plate 400 to rotate forward synchronously through the cooperation between the waist block 437 and the waist groove 436 on the transmission 435 rod. The threaded plate 401 on the circular plate 400 and the reference plate 402 rotate forward synchronously, so the threaded plate 401 is screwed into the mounting hole 60 on the fixed wheel 6. In this process, the left and right ends of the fixed shaft 7 are not clamped and limited. Therefore, the rotating cylinder 430 drives the clamping platform 431 to rotate synchronously while failing to drive the fixed shaft 7 to rotate.

[0059] As the right square frame 2 continues to move, the left end of the fixed shaft 7 is pressed against the reference plate 402, and the pressing platform 431 contacts the right end of the fixed shaft 7, so the reference plate 402 and the pressing platform 431 cooperate with each other to limit the left and right directions of the fixed shaft 7, and the rubber arc surface of the pressing platform 431 presses against the fixed shaft 7, and then the external motor drives the driving shaft 432 to reverse, so the rotating cylinder 430 drives the movable column 40 to reverse synchronously, the threaded plate 401 is spirally withdrawn from the mounting hole 60, and the threaded section of the fixed shaft 7 is spirally screwed into the mounting hole 60 (see Figure 8 ), and in this process, the reference plate 402 on the threaded plate 401 is in close contact with the fixed shaft 7, so the fixed shaft 7 is always guided during the assembly process to ensure that the axes of the two are always in line, meeting the required assembly requirements.

[0060] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0061] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0062] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic assembly equipment for active fixed wheel assembly of CVT continuously variable transmission, characterized in that: include: A bottom plate (1), wherein the upper end surface of the bottom plate (1) is provided with two square frames (2) distributed left and right, the left square frame (2) is fixedly provided on the bottom plate (1), and the right square frame (2) is slidably provided left and right on the bottom plate (1), the two square frames (2) are provided with a guide mechanism (4), and the two square frames (2) are provided with a clamping unit (3) for clamping a fixed wheel (6) and a fixed shaft (7); The clamping unit (3) comprises a sliding block (30), a plurality of sliding blocks (30) are slidably arranged on the square frame (2) and are evenly distributed in the circumferential direction about the center line of the square frame (2), arc-shaped clamping plates (31) are fixedly arranged on the opposing surfaces of the two sliding blocks (30) on the left and right, and a clamping plate (32) for clamping the fixed shaft (7) is fixedly arranged on the inner arc surface of the right clamping plate (31) via a connecting strip; The guide mechanism (4) comprises a movable column (40), the movable column (40) having an axis colinear with a center line of the square frame (2) being movably mounted on the left side of the square frame (2), a circular plate (400) being fixedly arranged on the right end face of the movable column (40), a plurality of circumferentially evenly distributed threaded plates (401) being slidably arranged on the circular plate (400) via a moving block, the threaded plates (401) being matched with threaded grooves on the fixed wheel (6), and a reference plate (402) being fixedly arranged on the right end face of the threaded plate (401); A driving unit (5) is commonly arranged on the two square frames (2).

2. The automatic assembly equipment for the active fixed wheel assembly of a CVT continuously variable transmission according to claim 1 is characterized in that: The guide mechanism (4) further comprises an inclined plate (41), and the end surface of the reference plate (402) facing the axis of the movable column (40) is fixedly provided with the inclined plate (41), and the inclined plate (41) approaches the axis of the movable column (40) from left to right.

3. The automatic assembly equipment for the active fixed wheel assembly of a CVT continuously variable transmission according to claim 1 is characterized in that: The clamping unit (3) further comprises a rotating rod (33) colinear with the axis of the movable column (40), a square block (330) is slidably sleeved on the rotating rod (33) and the movable column (40) to the left and right, and the two square frames (2) are located between the two square blocks (330), a hinge bar (331) is hingedly arranged between the square block (330) and the adjacent sliding block (30), and a return spring (332) is fixedly arranged between each sliding block (30) and the corresponding square frame (2).

4. The automatic assembly equipment for the active fixed wheel assembly of a CVT continuously variable transmission according to claim 3 is characterized in that: The driving unit (5) comprises a fixed block (50), the rear end face of the left square frame (2) and the front end face of the right square frame (2) are both fixedly provided with the fixed block (50), a plug-in column (500) with an axis extending from left to right is fixedly provided on the fixed block (50), the front end face of the left square block (330) and the rear end face of the right square block (330) are both fixedly provided with a plug-in board (501), a plug-in hole is provided on the plug-in board (501), a circular mounting block (502) is fixedly sleeved on the plug-in column (500), and a spring 2 (503) sleeved on the corresponding plug-in column (500) is fixedly provided on the mounting block (502) facing the end face of the corresponding plug-in board (501).

5. The automatic assembly equipment for the active fixed wheel assembly of a CVT continuously variable transmission according to claim 1 is characterized in that: The clamping unit (3) further comprises a rectangular block (34), the inner arc surface of the left clamping plate 1 (31) is fixedly provided with a rectangular block (34), a movable column (340) is installed on the connecting bar so as to slide left and right and penetrate through the movable column (340), a fitting plate (341) is fixedly provided on the left end surface of the movable column (340), and a spring 3 (342) which is sleeved on the movable column (340) is fixedly provided between the fitting plate (341) and the connecting bar.

6. The automatic assembly equipment for the active fixed wheel assembly of a CVT continuously variable transmission according to claim 1, characterized in that: The driving unit (5) further comprises a wedge-shaped platform (51), the right end surface of the left square frame (2) is provided with a wedge-shaped platform (51) by means of a connecting rod for sliding left and right, the wedge-shaped platform (51) is movably sleeved on the movable column (40), the wedge-shaped platform (51) is formed by two symmetrical circular platforms integrally formed, and both left and right ends of the wedge-shaped platform (51) are small-diameter ends, and the inner arc surface of the left clamping plate (31) is fixedly provided with a matching block (510) matching with the left arc surface of the wedge-shaped platform (51) by means of a circular rod.

7. The automatic assembly equipment for the active fixed wheel assembly of a CVT continuously variable transmission according to claim 6 is characterized in that: The driving unit (5) further comprises a spring telescopic rod (52), the left end surface of the moving block being fixedly provided with a spring telescopic rod (52) whose axis extends from left to right, the telescopic end of the spring telescopic rod (52) being fixedly provided with a matching block 2 (520) matching with the right side arc surface of the wedge-shaped platform (51), and the end surface of the matching block 2 (520) facing the wedge-shaped platform (51) and the inner arc surface of the clamping plate 2 (32) are both movably provided with balls (53).

8. The automatic assembly equipment for the active fixed wheel assembly of a CVT continuously variable transmission according to claim 1, characterized in that: The guiding mechanism (4) further comprises an opposing block (42), the outer arc surface of the clamping plate (31) is fixedly provided with an opposing block (42), a guiding groove is provided on the right opposing block (42), and a guiding column (420) with a horizontal axis and matched with the corresponding guiding groove is fixedly provided on the left opposing block (42).

9. The automatic assembly equipment for the active fixed wheel assembly of a CVT continuously variable transmission according to claim 3, characterized in that: The guide mechanism (4) further comprises a rotating group (43) arranged on the right square frame (2), the rotating group (43) comprising a rotating cylinder (430), a rotating cylinder (430) whose axis is colinear with the axis of the rotating rod (33) is rotatably arranged on the right square frame (2), the rotating rod (33) rotates through the rotating cylinder (430), a truncated cone-shaped abutting platform (431) is fixedly arranged on the left end surface of the rotating cylinder (430), and the small diameter end of the abutting platform (431) faces leftward, and the arc surface of the abutting platform (431) is made of rubber material.

10. The automatic assembly equipment for the active fixed wheel assembly of a CVT continuously variable transmission according to claim 9, characterized in that: The rotating group (43) further comprises a driving shaft (432), the right end surface of the square frame (2) on the right side is rotatably provided with the driving shaft (432), the driving shaft (432) and the rotating cylinder (430) are both fixedly sleeved with gears (433), the two gears (433) are meshed with each other, a transmission rod (434) is fixedly provided on the left end surface of the abutting platform (431), a transmission sleeve (435) is fixedly provided on the right end surface of the circular plate (400), a waist-shaped groove (436) is provided on the transmission sleeve (435), and a waist-shaped block (437) is fixedly provided on the transmission rod (434).

Images