High-precision detection device for gearbox assembly

Abstract

The invention relates to the technical field of gearbox detection, in particular to a gearbox assembly high-precision detection device which comprises a mounting frame, a shifting rod and a shifting fork, the top end of the shifting fork is fixedly connected with the shifting rod, and the rear side of the upper surface of the mounting frame is fixedly connected with a fixing plate. Four supporting mechanisms used for providing resistance in the testing process and a driving mechanism used for driving the shifting fork to move back and forth in a reciprocating mode are arranged on the front surface of the fixing plate in a circumferential array mode, the driving mechanism drives the shifting fork to slide back and forth in a reciprocating mode to simulate gear shifting operation, and the connecting ring is matched with the shifting fork to slide on the friction plate. The friction plate is used for simulating the resistance during gear shifting, and the limiting piece is used for simulating the condition of gear shifting jamming, so that the test condition is more fit with the actual use condition in the process of detecting the strength of the shifting fork, more accurate strength data of the shifting fork can be obtained, and the subsequent reasonable judgment on the service life of the shifting fork is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of gearbox detection, and in particular to a high-precision detection device for a gearbox component. Background Art

[0002] The gearbox is a mechanism used to change the speed and torque from the engine. It can fix or change the transmission ratio of the output shaft and the input shaft in stages. The gearbox consists of a speed transmission mechanism and an operating mechanism. The gearbox is divided into an automatic gearbox and a manual gearbox. Most agricultural machinery is equipped with a manual gearbox. The working principle of the manual gearbox is to shift the gear lever. After the gear lever shifts to different gears, it corresponds to different levers and forks. The different gear sets are switched by the fork, thereby realizing the change of gear ratio for shifting operations.

[0003] In actual use, when performing a gear shift operation, it is necessary to first step on the clutch in place to completely cut off the power transmission between the engine and the gearbox before performing the gear shift operation. When the operator is not proficient in the gear shift operation, the clutch is not stepped on in place and the gear shift operation is started; sometimes the clutch is stepped on in place and the gear shift is performed, but the hands and feet are not coordinated enough, resulting in the clutch being loosened before the gear shift is completed; at the same time, the gear shift operation is performed directly without stepping on the clutch; all of the above methods will cause the shift fork to encounter resistance when moving due to the engine power not being completely disconnected from the gearbox during the gear shift process, and the shift fork itself will be subjected to the reaction force from the resistance, which can easily cause damage to the shift fork. Therefore, the strength of the shift fork needs to be tested during production.

[0004] However, the existing testing method is usually to directly perform strength tests on the shift fork. The testing method is usually to directly apply different forces on the shift fork, and then obtain the strength results of the shift fork based on the deformation and the degree of damage of the shift fork. The test results obtained by testing the strength of the shift fork in this way are not comprehensive enough, resulting in inaccurate test results; mechanical testing of the shift fork cannot completely simulate the force applied to the shift fork during manual operation, resulting in insufficient diversity of the test results, which affects the judgment of the strength of the shift fork. Summary of the invention

[0005] Therefore, the present invention provides a high-precision detection device for a gearbox assembly, which solves the above technical problems.

[0006] The present invention provides a high-precision detection device for a gearbox component, comprising a mounting frame, a shift rod and a shift fork, wherein the top end of the shift fork is fixedly connected to the shift rod, the rear side of the upper surface of the mounting frame is fixedly connected to a fixing plate, the front surface of the fixing plate is provided with four supporting mechanisms in a circular array for providing resistance during the test, the detection device also includes a driving mechanism for driving the shift fork to reciprocate back and forth, the driving mechanism is arranged on the top end of the mounting frame, the detection device also includes a second adjusting mechanism for adjusting the synchronous movement of multiple supporting mechanisms, the second adjusting mechanism is arranged on the fixing plate, the detection device also includes a first adjusting mechanism for assisting the supporting mechanism to block the travel path of the shift fork, the first adjusting mechanism is arranged on the second adjusting mechanism.

[0007] The supporting mechanism includes a connecting slider slidably connected to the front surface of the fixed plate, the front surface of the connecting slider is fixedly connected to an arc plate, the front end of the outer arc surface of the arc plate is fixedly installed with a friction plate by a first limiting bolt, and a limiting member is arranged on the arc plate and at the rear side of the friction plate.

[0008] The limiting member includes a positioning seat fixedly connected to the inner curved surface of the curved plate and arranged in the left and right directions, an auxiliary plate is hinged on the positioning seat, the hinge point between the positioning seat and the auxiliary plate is located at the center of the auxiliary plate, a through groove adapted to the auxiliary plate is provided on the curved plate, a torsion spring is provided between the auxiliary plate and the positioning seat for keeping the auxiliary plate and the curved plate coaxial when the auxiliary plate is not subjected to force, and two symmetrical curved push blocks are fixedly connected to the inner curved surface of the auxiliary plate and located on the front and rear sides of the positioning seat.

[0009] According to an embodiment of the present invention, the first adjustment mechanism includes an adjustment rod slidably connected to the second adjustment mechanism forward and backward, an elastic telescopic limit seat is embedded and fixedly connected on the circumferential surface of the adjustment rod, the end of the elastic telescopic limit seat away from the axis of the adjustment rod is spherical, and a pushing member is arranged on the rear side of the circumferential surface of the elastic telescopic limit seat.

[0010] According to an embodiment of the present invention, the pushing member includes a plurality of circumferentially distributed first connecting plates fixedly connected to the circumferential surface of the adjusting rod, a pushing plate is commonly fixedly connected to one side of the plurality of first connecting plates away from the axis of the adjusting rod, four evenly distributed auxiliary rollers are rotatably connected to the circumferential surface of the pushing plate, the four auxiliary rollers correspond one-to-one to four auxiliary plates, the auxiliary rollers slide in cooperation with the arc surfaces of their corresponding arc pushing blocks, a limit slide seat arranged in the front and rear directions is fixedly connected to the inner arc surface of the arc plate, and the limit slide seat is slidably connected to the pushing plate front and rear.

[0011] According to an embodiment of the present invention, the second adjusting mechanism includes a limit clamping seat fixedly connected to the rear surface of the fixing plate, the limit clamping seat is rotatably connected to a connecting shaft rod inside, and the limit clamping seat is provided with a second limit bolt for limiting the connecting shaft rod thereon, the front end of the connecting shaft rod passes through the front side of the fixing plate and is rotatably connected to the fixing plate, the front end of the connecting shaft rod is fixedly connected to a connecting cylinder, the outer circumferential surface of the connecting cylinder is fixedly connected to two front-and-rear distributed gears, the gears are meshed with two groups of front-and-rear distributed racks, the number of each group of racks is two and they are symmetrically arranged with respect to the center of the gear, the two groups of racks are arranged perpendicular to each other, the racks are slidably connected to a limit connecting rod, the four racks correspond to four arc plates one by one, the end of the rack away from the limit connecting rod is fixedly connected to the inner arc surface of the arc plate corresponding to it, and the end of the limit connecting rod away from the rack is fixedly connected to the corresponding arc plate.

[0012] According to an embodiment of the present invention, the driving mechanism includes a mechanical driving component arranged on the left side of the top of the mounting frame, a manual driving component is arranged on the right side of the top of the mounting frame, and an adjusting component is arranged at the top of the mounting frame and between the mechanical driving component and the manual driving component.

[0013] According to an embodiment of the present invention, the mechanical driving component includes two front-to-back symmetrical second connecting plates fixedly connected to the mounting frame, a screw rod is rotatably connected to the opposite surfaces of the two second connecting plates, a driving motor is fixedly installed on the rear surface of the rear second connecting plate, the output shaft of the driving motor passes through the second connecting plate and is fixedly connected to the rear end of the screw rod, a limiting slide rod is fixedly connected to the opposite surfaces of the two second connecting plates and located below the screw rod, a first slide rod is threadedly connected to the screw rod, and the bottom end of the first slide rod is slidably connected to the limiting slide rod front and back.

[0014] According to an embodiment of the present invention, the adjusting member includes a mounting slide fixedly connected to the mounting frame and arranged in the front-to-back direction, two clamping seats are slidably connected to the mounting slide in the front-to-back direction, a fixing sleeve is fixedly connected to the front surface of the clamping seat on the front side, an insertion rod is slidably connected to the interior of the fixing sleeve along the left-right direction, an adjusting handle is slidably connected to the front surface of the fixing sleeve along the left-right direction, and the rear side of the adjusting handle is connected to the fixing sleeve at a connection position that passes through the interior of the fixing sleeve and is fixedly connected to the insertion rod.

[0015] According to an embodiment of the present invention, clamping holes adapted to the shift rod are provided on the opposing surfaces of the two clamping seats, and the clamping seats are provided with a plurality of elastic telescopic limit rods for limiting the position of the shift rod after the shift rod is inserted into the clamping seats, and the telescopic ends of the elastic telescopic limit rods pass through the interior of the clamping seats, and the front clamping seats are provided with a third limit bolt for locking the shift rod inside the clamping seats.

[0016] According to an embodiment of the present invention, the manual drive member includes a connecting slide fixedly connected to the mounting frame and distributed in the front-to-back direction, a second slider is slidably connected to the connecting slide, and a pushing handle is fixedly connected to the right side of the second slider.

[0017] According to an embodiment of the present invention, an auxiliary mechanism is commonly provided on the front surface of the fixed plate and the mounting frame, and the auxiliary mechanism includes a mounting slide fixedly connected to the upper surface of the mounting frame, the rear side of the mounting slide is fixedly connected to the front surface of the fixed plate, and a clamping block is connected to the mounting slide for forward and backward sliding, and a connecting ring is clamped on the clamping block, and the connecting ring is clamped with the bottom end of the fork.

[0018] The technical solution of the present invention is as follows: 1. The driving mechanism drives the shift fork to slide back and forth to simulate the gear shifting operation, and the connecting ring slides on the friction plate. The friction plate simulates the resistance encountered during the gear shifting, and the limit piece simulates the gear shifting jam. In the process of testing the strength of the shift fork itself, the test conditions can be more in line with the actual usage conditions, so as to obtain more accurate strength data of the shift fork, which is convenient for making reasonable judgments on the service life of the shift fork later.

[0019] 2. Through the setting of the manual drive part, you can choose to manually push the test during the test, so that the test results are more comprehensive. With the setting of the adjustment part, you can freely switch to use the mechanical drive part or the manual drive part to perform strength test on the fork.

[0020] 3. Through the setting of the supporting mechanism, the test method for the strength test of the fork can be selected according to the needs. The fork can be subjected to a sliding test with resistance or a blocking test, so as to simulate the strength of the fork under stress in different situations, diversify the detection methods, and improve the comprehensiveness of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the high-precision detection device for a gearbox assembly provided by the present invention.

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the shift rod and the shift fork provided by the present invention in cooperation with the connecting ring.

[0024] Figure 3It is a schematic diagram of the three-dimensional structure of the installation frame provided by the present invention.

[0025] Figure 4 It is a three-dimensional structural schematic diagram of the auxiliary mechanism provided by the present invention.

[0026] Figure 5 It is a three-dimensional structural schematic diagram of the driving mechanism provided by the present invention.

[0027] Figure 6 It is a three-dimensional structural schematic diagram of the mechanical driving component, the adjusting component and the manual driving component provided by the present invention.

[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of switching to manual drive member drive provided by the present invention.

[0029] Figure 8 It is a schematic diagram of the three-dimensional structure of switching to mechanical driving member drive provided by the present invention.

[0030] Fig. 9 It is one of the three-dimensional structural schematic diagrams of the first regulating mechanism and the second regulating mechanism provided by the present invention.

[0031] Fig.10 This is the second three-dimensional structural schematic diagram of the first regulating mechanism and the second regulating mechanism provided by the present invention.

[0032] Fig.11 It is a schematic diagram of the three-dimensional structure of the pushing member and the limiting member provided by the present invention.

[0033] Fig.12 The present invention provides Fig.11 Enlarged view of part A.

[0034] Fig.13 It is a right side sectional view of the adjusting rod and the connecting tube provided by the present invention.

[0035] Fig.14 It is a schematic diagram of the auxiliary plate provided by the present invention in a state where the opening is larger at the front and smaller at the back.

[0036] Fig.15 This is a schematic diagram of the auxiliary plate provided by the present invention, which is opened small at the front and wide at the back.

[0037] Reference numerals:

[0038] 1. Mounting frame; 2. First adjustment mechanism; 3. Second adjustment mechanism; 4. Fixing plate; 5. Support mechanism; 6. Driving mechanism; 7. Auxiliary mechanism; 21. Adjusting rod; 22. Elastic telescopic limit seat; 23. Pushing member; 31. Rack; 32. Limiting connecting rod; 33. Connecting cylinder; 34. Gear; 35. Limiting seat; 36. Connecting shaft; 51. Connecting slider; 52. Arc plate; 53. Friction plate; 54. Limiting member; 61. Mechanical driving member; 62. Adjusting member; 63. Manual driving member; 71. Mounting carriage; 72. Clamping block; 7 3. Connecting ring; 231. Pushing plate; 232. Limiting slide; 233. Auxiliary roller; 234. First connecting piece; 541. Arc push block; 542. Auxiliary plate; 543. Positioning seat; 611. First slider; 612. Screw rod; 613. Second connecting piece; 614. Driving motor; 615. Limiting slide; 621. Connecting seat; 622. Mounting slide; 623. Insert rod; 624. Fixing sleeve; 625. Adjusting handle; 631. Second slider; 632. Connecting slide; 633. Pushing handle; 100. Shifting rod; 200. Shifting fork. DETAILED DESCRIPTION

[0039] 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.

[0040] like Figure 1 , Figure 2 and Figure 3 As shown, a high-precision detection device for a gearbox component includes a mounting frame 1, a shift rod 100 and a shift fork 200, the top end of the shift fork 200 is fixedly connected to the shift rod 100, the rear side of the upper surface of the mounting frame 1 is fixedly connected to a fixing plate 4, the front surface of the fixing plate 4 is provided with four supporting mechanisms 5 in a circular array for providing resistance during the test, the detection device also includes a driving mechanism 6 for driving the shift fork 200 to reciprocate back and forth, the driving mechanism 6 is arranged at the top end of the mounting frame 1, the detection device also includes a second adjusting mechanism 3 for adjusting the synchronous movement of multiple supporting mechanisms 5, the second adjusting mechanism 3 is arranged on the fixing plate 4, the detection device also includes a first adjusting mechanism 2 for assisting the supporting mechanism 5 to block the travel path of the shift fork 200, the first adjusting mechanism 2 is arranged on the second adjusting mechanism 3.

[0041] like Figure 1 and Figure 4As shown, an auxiliary mechanism 7 is commonly provided on the front surface of the fixed plate 4 and the mounting frame 1, and the auxiliary mechanism 7 comprises a mounting slide 71 fixedly connected to the upper surface of the mounting frame 1, and the rear side of the mounting slide 71 is fixedly connected to the front surface of the fixed plate 4, and a clamping block 72 is slidably connected to the mounting slide 71 in the front and rear directions, and a connecting ring 73 is clamped on the clamping block 72, and the connecting ring 73 is clamped with the bottom end of the fork 200.

[0042] like Figure 1 and Figure 5 As shown, the driving mechanism 6 includes a mechanical driving member 61 arranged on the left side of the top of the mounting frame 1, a manual driving member 63 is arranged on the right side of the top of the mounting frame 1, and an adjusting member 62 is arranged at the top of the mounting frame 1 and between the mechanical driving member 61 and the manual driving member 63.

[0043] like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the adjusting member 62 includes a mounting slide 622 fixedly connected to the mounting frame 1 and arranged in the front-to-back direction, two clamping seats 621 are slidably connected to the mounting slide 622 in the front-to-back direction, a fixing sleeve 624 is fixedly connected to the front surface of the front clamping seat 621, an insert rod 623 is slidably connected to the inside of the fixing sleeve 624 along the left-right direction, an adjusting handle 625 is slidably connected to the front surface of the fixing sleeve 624, and the connecting position of the adjusting handle 625 and the fixing sleeve 624 passes through the fixed The interior of the fixed sleeve 624 is fixedly connected to the insertion rod 623, and the opposite surfaces of the two clamping seats 621 are provided with clamping holes compatible with the shift rod 100. The clamping seat 621 is provided with a plurality of elastic telescopic limit rods for limiting the shift rod 100 after the shift rod 100 is inserted into the clamping seat 621. The telescopic end of the elastic telescopic limit rod passes through the interior of the clamping seat 621, and the front clamping seat 621 is provided with a third limit bolt for locking the shift rod 100 inside the clamping seat 621.

[0044] When in use, first slide the clamping block 72 to the front end of the mounting slide 71, then take a new connecting ring 73 and clamp it on the clamping block 72. At this time, clamp the bottom end of the shift fork 200 on the connecting ring 73, and at the same time adjust the positions of the two clamping seats 621 on the mounting slide 622 according to the positions of the front and rear ends of the shift rod 100, and clamp the two clamping seats 621 on the front and rear ends of the shift rod 100 respectively, and use the third limiting bolt to keep the front clamping seat 621 and the front end of the shift rod 100 relatively fixed, and then adjust the position of the insertion rod 623 on the fixing sleeve 624 by adjusting the handle 625 according to the test needs to choose whether to push the shift fork 200 to move by the manual drive member 63 or the mechanical drive member 61.

[0045] like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the mechanical drive component 61 includes two front-to-back symmetrical second connecting pieces 613 fixedly connected to the mounting frame 1, and the opposite surfaces of the two second connecting pieces 613 are connected with a screw rod 612 for rotation thereon. A driving motor 614 is fixedly installed on the rear surface of the rear second connecting piece 613, and the output shaft of the driving motor 614 passes through the second connecting piece 613 and is fixedly connected with the rear end of the screw rod 612. A limiting slide bar 615 is fixedly connected with the opposite surfaces of the two second connecting pieces 613 and below the screw rod 612, and a first slider 611 is threadedly connected to the screw rod 612, and the bottom end of the first slider 611 is connected to the limiting slide bar 615 for forward and backward sliding movement.

[0046] like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the manual drive member 63 includes a connecting slide 632 fixedly connected to the mounting frame 1 in the front-to-back direction, a second slider 631 is slidably connected to the connecting slide 632, a push handle 633 is fixedly connected to the right side of the second slider 631, and the first slider 611 and the second slider 631 are both provided with left and right connecting holes that are compatible with the insertion rod 623.

[0047] During specific use, first adjust the positions of the first slider 611, the second slider 631 and the insertion rod 623 to be aligned. When the insertion rod 623 is pushed to move to the left by adjusting the handle 625, the left end of the insertion rod 623 is inserted into the connecting hole on the first slider 611, and the driving motor 614 drives the screw rod 612 to rotate and cooperate with the limiting slide bar 615 to make the first slider 611 move in the front and rear directions, and the insertion rod 623 cooperates with the clamping seat 621 to drive the shift rod 100 and the shift fork 200 to move in the front and rear directions. When the insertion rod 623 is pushed to move to the left by adjusting the handle 625, the left end of the insertion rod 623 is inserted into the connecting hole on the first slider 611. At this time, the staff needs to manually push the pushing handle 633 through the second slider 631 and the clamping seat 621 to drive the shift rod 100 and the shift fork 200 to move in the front and rear directions.

[0048] like Figure 1 and Fig. 9 As shown, the support mechanism 5 includes a connecting slider 51 slidably connected to the front surface of the fixed plate 4, the front surface of the connecting slider 51 is fixedly connected to an arc plate 52, the front end of the outer arc surface of the arc plate 52 is fixedly installed with a friction plate 53 by a first limiting bolt, and a limiting member 54 is arranged on the arc plate 52 and at the rear side of the friction plate 53.

[0049] like Figure 1 , Fig. 9 and Fig.10As shown, the second adjustment mechanism 3 includes a limit clamp 35 fixedly connected to the rear surface of the fixing plate 4, the limit clamp 35 is internally rotatably connected to a connecting shaft 36, the limit clamp 35 is provided with a second limit bolt for limiting the connecting shaft 36 thereon, the front end of the connecting shaft 36 penetrates to the front side of the fixing plate 4 and is rotatably connected to the fixing plate 4, the front end of the connecting shaft 36 is fixedly connected to a connecting cylinder 33, and the outer circumferential surface of the connecting cylinder 33 is fixedly connected to two gears 34 distributed front and back, the gear 3 4 is meshed with two groups of racks 31 distributed front and back, each group of racks 31 has two racks 31 and is symmetrically arranged with the center of the gear 34 as the reference, the two groups of racks 31 are arranged perpendicular to each other, the racks (31) are slidably connected to the limit connecting rods (32), the four racks 31 correspond to the four arc plates 52 one by one, one end of the rack 31 away from the limit connecting rod 32 is fixedly connected to the inner arc surface of the corresponding arc plate 52, and one end of the limit connecting rod 32 away from the rack 31 is fixedly connected to the corresponding arc plate 52.

[0050] like Fig. 9 , Fig.11 and Fig.12 As shown, the limiting member 54 includes a positioning seat 543 fixedly connected to the inner arc surface of the arc plate 52 and arranged in the left and right directions, an auxiliary plate 542 is hinged on the positioning seat 543, and the hinge point between the positioning seat 543 and the auxiliary plate 542 is located at the center of the auxiliary plate 542, and a through groove adapted to the auxiliary plate 542 is provided on the arc plate 52, and a torsion spring is provided between the auxiliary plate 542 and the positioning seat 543 for keeping the auxiliary plate 542 and the arc plate 52 coaxial when the auxiliary plate 542 is not subjected to force, and two symmetrical arc push blocks 541 are fixedly connected on the inner arc surface of the auxiliary plate 542 and located on the front and rear sides of the positioning seat 543.

[0051] like Figure 1 and Fig. 9 As shown, the first adjustment mechanism 2 includes an adjustment rod 21 slidably connected to the inside of a connecting tube 33, and an elastic telescopic limit seat 22 is embedded and fixedly connected on the circumferential surface of the adjustment rod 21. The end of the elastic telescopic limit seat 22 away from the axis of the adjustment rod 21 is spherical. Three snap-in holes matching the spherical end of the elastic telescopic limit seat 22 are provided on the circumferential surface of the connecting tube 33, and a pushing member 23 is provided on the rear side of the circumferential surface of the elastic telescopic limit seat 22.

[0052] like Fig. 9 , Fig.10 , Fig.11 , Fig.12 and Fig.13As shown, the pushing member 23 includes a plurality of circumferentially distributed first connecting pieces 234 fixedly connected to the circumferential surface of the adjusting rod 21, the side of the first connecting piece 234 away from the axis of the adjusting rod 21 penetrates to the outer side of the connecting tube 33 and is slidably connected to the connecting tube 33 front and back, and the plurality of first connecting pieces 234 are commonly fixedly connected to a pushing plate 231 on the side away from the axis of the adjusting rod 21, and four evenly distributed auxiliary rollers 233 are rotatably connected to the circumferential surface of the pushing plate 231, and the four auxiliary rollers 233 correspond to the four auxiliary plates 542 one by one, and the auxiliary rollers 233 and the corresponding arc surfaces of the arc push blocks 541 are slidably matched, and a limiting slide 232 set in the front and rear direction is fixedly connected to the inner arc surface of the arc plate 52, and the limiting slide 232 is slidably connected to the pushing plate 231 front and back.

[0053] In specific use, different test conditions are adjusted before the test starts according to the test needs. When it is necessary to simulate the situation where the clutch is not stepped on in place for shifting, the gear 34 is driven to rotate by rotating the connecting cylinder 33. The gear 34 cooperates with the rack 31 to push the four arc plates 52 to synchronously fit outward on the inner circumferential surface of the connecting ring 73, and at the same time drives the connecting slider 51 to slide on the fixed plate 4. The setting of the limit connecting rod 32 can make the four arc plates 52 move synchronously. By installing a friction plate 53 with suitable friction force on the arc plate 52 and using the first limit bolt to make the friction plate 53 and the inner circumferential surface of the connecting ring 73 synchronously, the connecting slider 51 is driven to slide on the fixed plate 4. The arc plates 52 remain relatively fixed. At this time, the friction force generated by the friction plate 53 on the connecting ring 73 is used to detect the strength of the fork 200 when sliding with resistance during the sliding process. The connecting shaft 36 and the limiting clamp 35 are kept relatively fixed by the second limiting bolt. At this time, the connecting cylinder 33 remains stationary to ensure that after the position adjustment of the arc plate 52 is completed, when the arc plate 52 is subjected to force, the rack 31 on the arc plate 52 remains stationary on the gear 34, so that the arc plate 52 remains stationary, so that the friction plate 53 can play a normal friction role, and the auxiliary plate 542 can play a normal limiting role.

[0054] When it is necessary to simulate the loosening of the clutch during the gear shifting process, first remove the friction plate 53 from the arc plate 52 by loosening the first limiting bolt, then apply a backward thrust to the adjusting rod 21 to clamp the elastic telescopic limiting seat 22 into the rearmost clamping hole on the connecting tube 33, and push the pushing plate 231 to slide backward through the adjusting rod 21 in cooperation with the first connecting plate 234. At this time, the pushing plate 231 slides on the limiting sliding seat 232 so that the pushing plate 231 slides along the axial direction of the arc plate 52, and the pushing plate 231 slides backward and the auxiliary roller 233 thereon slides against the arc surface of the arc surface pushing block 541 on the rear side of the auxiliary plate 542. At this time, the auxiliary roller 233 generates a thrust on the arc surface pushing block 541 on the rear side of the auxiliary plate 542, causing the opening of the auxiliary plate 542 to be smaller at the front and larger at the back (such as Fig.15As shown in FIG. 1 , the shift fork 200 is suddenly blocked when passing through the auxiliary plate 542 while driving the connecting ring 73 to slide, and the strength of the sudden blockage of the shift fork 200 during the sliding process is tested.

[0055] It should be noted that when the connecting tube 33 is rotated, the connecting tube 33 drives the adjusting rod 21 to rotate synchronously, and the adjusting rod 21 drives the first connecting piece 234 to rotate on the pushing disk 231, and the first connecting piece 234 remains stationary.

[0056] When it is necessary to simulate the situation of shifting without stepping on the clutch, a forward pulling force is applied to the adjusting rod 21 to clamp the elastic telescopic limit seat 22 in the frontmost clamping hole on the connecting tube 33. At this time, the auxiliary roller 233 generates a thrust on the arc-shaped push block 541 on the front side of the auxiliary plate 542, so that the opening of the auxiliary plate 542 is larger at the front and smaller at the back (such as Fig.14 As shown in the figure, when the shift fork 200 slides to the front end position of the auxiliary plate 542 during the sliding process, the shift fork 200 will be limited, and the strength of the shift fork 200 is tested under the condition that it is suddenly limited during the sliding process.

[0057] The fork 200 is subjected to strength tests under different conditions using the above-mentioned different conditions as needed, and then the parallelism of the front and rear surfaces of the tested fork 200 is tested for deformation, and at the same time, the surface and interior of the fork 200 are tested for damage. The strength of the fork 200 is obtained through a comprehensive analysis of the deformation and damage detection results of the fork 200 and the test conditions.

[0058] Working principle: When in use, first clamp the bottom end of the fork 200 on the connecting ring 73, then install the lever 100 on the adjusting member 62, and then choose to use the manual drive member 63 or the mechanical drive member 61 through the adjusting member 62 to push the fork 200 to move in the direction close to the adjusting arc plate 52. At this time, the position of the arc plate 52 is adjusted through the connecting tube 33 so that the arc plate 52 fits the inner circumference of the connecting ring 73. At the same time, different friction plates 53 can be selected to provide different degrees of friction. The strength test is carried out when the fork 200 slides with resistance. The adjusting rod 21 can also be used to cooperate with the pushing member 23. Adjust the inclination direction of the auxiliary plate 542. When the auxiliary plate 542 opens smaller at the front and larger at the back, the strength of the shift fork 200 when it is suddenly subjected to resistance during sliding can be tested. When the auxiliary plate 542 opens larger at the front and smaller at the back, the strength of the shift fork 200 when it is blocked during sliding can be tested. The strength of the shift fork 200 is tested under different conditions as needed. The parallelism of the front and rear surfaces of the tested shift fork 200 is then tested for deformation. At the same time, the surface and interior of the shift fork 200 are tested for damage. The strength of the shift fork 200 is determined based on the deformation and damage detection results of the shift fork 200 and the test conditions.

[0059] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0060] 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.

[0061] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] 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 based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-precision detection device for a gearbox assembly, characterized in that: The device comprises a mounting frame (1), a shift rod (100) and a shift fork (200); the top end of the shift fork (200) is fixedly connected to the shift rod (100); the rear side of the upper surface of the mounting frame (1) is fixedly connected to a fixing plate (4); and the front surface of the fixing plate (4) is provided with four supporting mechanisms (5) in a circular array for providing resistance during a test; A driving mechanism (6) for driving the shift fork (200) to move back and forth, the driving mechanism (6) being arranged at the top end of the mounting frame (1); a second adjustment mechanism (3) for adjusting the synchronous movement of a plurality of support mechanisms (5), wherein the second adjustment mechanism (3) is arranged on the fixed plate (4); a first adjustment mechanism (2) for assisting the support mechanism (5) in blocking the travel path of the shift fork (200), wherein the first adjustment mechanism (2) is arranged on the second adjustment mechanism (3); The support mechanism (5) comprises a connecting slider (51) slidably connected to the front surface of the fixing plate (4); the front surface of the connecting slider (51) is fixedly connected to an arc-shaped plate (52); a friction plate (53) is fixedly mounted on the front end of the outer arc surface of the arc-shaped plate (52) by a first limiting bolt; a limiting member (54) is arranged on the arc-shaped plate (52) and at the rear side of the friction plate (53); The limiting member (54) comprises a positioning seat (543) fixedly connected to the inner arc surface of the arc plate (52) and arranged in the left-right direction; an auxiliary plate (542) is hinged on the positioning seat (543); a hinge point between the positioning seat (543) and the auxiliary plate (542) is located at the center of the auxiliary plate (542); a through groove matched with the auxiliary plate (542) is provided on the arc plate (52); a torsion spring is provided between the auxiliary plate (542) and the positioning seat (543) for keeping the auxiliary plate (542) and the arc plate (52) coaxial when the auxiliary plate (542) is not subjected to force; two symmetrical arc push blocks (541) are fixedly connected on the inner arc surface of the auxiliary plate (542) and located on the front and rear sides of the positioning seat (543).

2. A high-precision detection device for a gearbox assembly according to claim 1, characterized in that: The first adjustment mechanism (2) comprises an adjustment rod (21) connected to the second adjustment mechanism (3) in a forward and backward sliding manner, an elastic telescopic limit seat (22) is embedded and fixedly connected on the circumferential surface of the adjustment rod (21), one end of the elastic telescopic limit seat (22) away from the axis of the adjustment rod (21) is spherical, and a pushing member (23) is arranged on the rear side of the circumferential surface of the elastic telescopic limit seat (22).

3. A high-precision detection device for a gearbox assembly according to claim 2, characterized in that: The pushing member (23) comprises a plurality of first connecting pieces (234) fixedly connected to the circumferential surface of the adjusting rod (21) and distributed in a circumferential manner; the first connecting pieces (234) are commonly fixedly connected to a pushing plate (231) on one side away from the axis of the adjusting rod (21); four evenly distributed auxiliary rollers (233) are rotatably connected to the circumferential surface of the pushing plate (231); the four auxiliary rollers (233) correspond to four auxiliary plates (542) one by one; the auxiliary rollers (233) and the corresponding arc surfaces of the arc pushing blocks (541) are slidably matched; a limit slide (232) arranged in the front-rear direction is fixedly connected to the inner arc surface of the arc plate (52); the limit slide (232) is slidably connected to the pushing plate (231) in the front-rear direction.

4. A high-precision detection device for a gearbox assembly according to claim 1, characterized in that: The second adjustment mechanism (3) comprises a limit clamping seat (35) fixedly connected to the rear surface of the fixing plate (4); a connecting shaft (36) is rotatably connected inside the limit clamping seat (35); a second limit bolt for limiting the connecting shaft (36) thereon is arranged on the limit clamping seat (35); a front end of the connecting shaft (36) penetrates to the front side of the fixing plate (4) and is rotatably connected to the fixing plate (4); a connecting cylinder (33) is fixedly connected to the front end of the connecting shaft (36); two gears (34) distributed front and rear are fixedly connected to the outer circumferential surface of the connecting cylinder (33); The wheel (34) is meshed with two groups of racks (31) distributed front and rear, each group of the racks (31) has two racks (31) and is symmetrically arranged with the center of the gear (34) as a reference, the two groups of the racks (31) are arranged perpendicular to each other, the racks (31) are slidably connected to the limit connecting rods (32), the four racks (31) correspond to the four arc plates (52) one by one, one end of the rack (31) away from the limit connecting rod (32) is fixedly connected to the inner arc surface of the arc plate (52) corresponding to it, and one end of the limit connecting rod (32) away from the rack (31) is fixedly connected to the arc plate (52) corresponding to it.

5. A high-precision detection device for a gearbox assembly according to claim 1, characterized in that: The driving mechanism (6) comprises a mechanical driving member (61) arranged on the left side of the top end of the mounting frame (1), a manual driving member (63) is arranged on the right side of the top end of the mounting frame (1), and an adjusting member (62) is arranged at the top end of the mounting frame (1) and between the mechanical driving member (61) and the manual driving member (63).

6. A high-precision detection device for a gearbox assembly according to claim 5, characterized in that: The mechanical driving member (61) comprises two front-to-back symmetrical second connecting pieces (613) fixedly connected to the mounting frame (1); a screw rod (612) is rotatably connected to the opposite surfaces of the two second connecting pieces (613); a driving motor (614) is fixedly installed on the rear surface of the rear second connecting piece (613); an output shaft of the driving motor (614) passes through the second connecting piece (613) and is fixedly connected to the rear end of the screw rod (612); a limiting slide rod (615) is fixedly connected to the opposite surfaces of the two second connecting pieces (613) and located below the screw rod (612); a first slider (611) is threadedly connected to the screw rod (612); and the bottom end of the first slider (611) is slidably connected to the limiting slide rod (615) in a front-to-back direction.

7. A high-precision detection device for a gearbox assembly according to claim 5, characterized in that: The adjusting member (62) comprises an installation slide (622) fixedly connected to the installation frame (1) and arranged in the front-to-back direction, two clamping seats (621) are slidably connected to the installation slide (622) in the front-to-back direction, a fixing sleeve (624) is fixedly connected to the front surface of the clamping seat (621) on the front side, an insertion rod (623) is slidably connected to the interior of the fixing sleeve (624) in the left-right direction, an adjusting handle (625) is slidably connected to the front surface of the fixing sleeve (624) in the left-right direction, and a rear side of the adjusting handle (625) is connected to the fixing sleeve (624) at a connection position and passes through the interior of the fixing sleeve (624) and is fixedly connected to the insertion rod (623).

8. A high-precision detection device for a gearbox assembly according to claim 7, characterized in that: The opposing surfaces of the two clamping seats (621) are provided with clamping holes adapted to the shifting rod (100), and the clamping seat (621) is provided with a plurality of elastic telescopic limiting rods for limiting the position of the shifting rod (100) after the shifting rod (100) is inserted into the clamping seat (621), and the telescopic ends of the elastic telescopic limiting rods penetrate into the interior of the clamping seat (621), and the front clamping seat (621) is provided with a third limiting bolt for locking the shifting rod (100) inside the clamping seat (621).

9. A high-precision detection device for a gearbox assembly according to claim 5, characterized in that: The manual drive member (63) comprises a connecting slide (632) fixedly connected to the mounting frame (1) and distributed in the front-to-back direction, a second sliding block (631) being slidably connected to the connecting slide (632) in the front-to-back direction, and a pushing handle (633) being fixedly connected to the right side surface of the second sliding block (631).

10. A high-precision detection device for a gearbox assembly according to claim 1, characterized in that: The front surface of the fixing plate (4) and the mounting frame (1) are jointly provided with an auxiliary mechanism (7), the auxiliary mechanism (7) comprising a mounting slide (71) fixedly connected to the upper surface of the mounting frame (1), the rear side of the mounting slide (71) being fixedly connected to the front surface of the fixing plate (4), a clamping block (72) being slidably connected to the mounting slide (71) in a forward and backward manner, a connecting ring (73) being clamped to the clamping block (72), and the connecting ring (73) being clamped to the bottom end of the shift fork (200).

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