A fork test system

Abstract

In an embodiment of the present application, a shift fork test system is provided, which relates to the field of shift fork testing; it includes: an oil immersion tank assembly including a tank body for containing lubricating oil and a protective cover detachably mounted on the tank body; a drive mechanism assembly including: a rotary drive mechanism axially passing through one side of the tank body; and an axial drive mechanism passing through the same side of the tank body through a transmission mechanism; a force sensor is provided on the transmission mechanism; a shift fork clamping module including a mounting plate detachably mounted on the side wall of the tank body; a clamping member slidably mounted on the mounting plate and detachably connected to the transmission mechanism at one end; two positioning blocks that can be horizontally adjusted and locked to the mounting plate; and a synchronizer ring clamping module including a connecting end and a clamping end detachably connected to the rotary drive mechanism. The present application can simulate the actual working conditions of a gearbox to perform fatigue and wear resistance tests on shift forks, and can test shift forks of different models, and is simple and convenient to operate, which can improve the efficiency of shift fork testing and reduce costs.

Description

Technical Field

[0001] The invention relates to the field of speed shift fork detection, in particular to a shift fork testing system. Background Art

[0002] The gearbox is an important transmission device in the speed control system and is widely used in automobiles and other machinery. The shift fork is one of the key components in the gearbox.

[0003] In the prior art, the reliability and fatigue resistance of the shift fork are mainly studied after the whole machine is installed. If the above performance research is carried out in the whole machine, it will take a lot of time and energy to disassemble and assemble the whole machine and debug the test equipment, which makes the entire test work cumbersome and inefficient. Summary of the Invention

[0004] In view of the above problems, embodiments of the present invention are proposed to provide a shift fork testing system that overcomes the above problems or at least partially solves the above problems.

[0005] A shift fork test system, comprising:

[0006] An oil immersion tank assembly, comprising a tank body for containing lubricating oil and a protective cover detachably provided on the tank body;

[0007] Drive mechanism assembly, including:

[0008] a rotary drive mechanism axially passing through one side of the trough body;

[0009] and an axial drive mechanism disposed outside the tank body and passing through the same side of the tank body via a transmission mechanism; wherein the transmission mechanism is provided with a force sensor;

[0010] Scotch fork clamping module, including:

[0011] A mounting plate detachably arranged on the side wall of the tank body;

[0012] A clamping member slidably disposed on the mounting plate, for clamping the shift fork; one end of the clamping member is detachably connected to the transmission mechanism;

[0013] Two positioning blocks that can be adjusted horizontally and locked to the mounting plate are used for movably passing the shift fork shaft;

[0014] Synchronous ring clamping module, including:

[0015] A connecting end detachably connected to the rotary drive mechanism, and a clamping end for clamping and fixing a synchronizer ring; wherein the synchronizer ring is adapted to the shift fork.

[0016] Preferably, the rotation drive mechanism includes a pneumatic servo motor and a servo control module.

[0017] The main shaft of the pneumatic servo motor is passed through the side wall of the slot body; and a clamping structure is provided in the driving end of the main shaft for clamping the synchronizer ring clamping module;

[0018] The servo control module is connected to the pneumatic servo motor and is used to control the pneumatic servo motor to drive the synchronizer ring to rotate at high speed and stably.

[0019] Preferably, the clamping end comprises a stepped collar and a clamping disc, the clamping disc being connected to the stepped collar via a locking member and cooperating with the stepped collar to form an annular groove for the synchronization ring to be sleeved;

[0020] The connecting end comprises a transmission shaft, the transmission shaft is integrally connected to an end of the stepped collar away from the clamping disc, and the transmission shaft is detachably connected to the clamping structure.

[0021] Preferably, the axial drive mechanism includes a dual-axis double-acting cylinder and a pneumatic control module, and the pneumatic control module is connected to the dual-axis double-acting cylinder and is used to control the axial loading force of the dual-axis double-acting cylinder acting on the shift fork.

[0022] Preferably, the transmission mechanism includes a force transmission shaft, a connecting shaft and a connecting rod.

[0023] Two force transmission shafts are provided, which are respectively connected to the two ends of the force sensor; one of the force transmission shafts is connected to the dual-axis double-acting cylinder;

[0024] One end of the connecting shaft is connected to the other force transmission shaft, and the other end of the connecting shaft is passed through the side wall of the trough body and is hinged to the connecting rod;

[0025] The connecting rod is inserted into and locked at one end of the clamping member.

[0026] Preferably, a through hole is provided on the side wall of the trough body for the connecting shaft to movably pass through, and a telescopic sealing cover is arranged outside the through hole.

[0027] Preferably, the mounting plate is provided with a plurality of mounting holes in a transverse direction;

[0028] The positioning block is L-shaped and includes:

[0029] The horizontal adjustment part is provided with a waist-shaped hole, which is fixed with the mounting hole by a locking screw;

[0030] The vertical positioning portion is provided with an axial hole, and a shaft sleeve is provided in the axial hole;

[0031] The shift fork shaft and the shaft sleeve form a clearance fit.

[0032] Preferably, the clamping member is U-shaped and is disposed below the horizontal adjustment portion, comprising:

[0033] a sliding portion, the sliding portion being slidably disposed on a slide rail disposed on the mounting plate, and one end of the sliding portion being lockedly connected to the connecting rod;

[0034] The clamping parts are arranged at both ends of the sliding part and are used to clamp the two ends of the fork; one of the clamping parts is provided with a locking block, and the other clamping part is adjustably penetrated by a locking pressure rod and fixed by a locking piece.

[0035] Preferably, the side wall of the trough body is provided with a notch, a fixing plate is provided at the notch, and the fixing plate and the edge of the notch are sealed by a sealing strip; the four corners of the mounting plate are connected to the inner side of the fixing plate by locking screws and a ball lock shaft, and the top of the mounting plate is provided with an upper sealing strip that abuts against the protective cover, and the bottom of the mounting plate is provided with a strip pressure plate for pressing the mounting plate.

[0036] Preferably, a scale is laterally provided on the mounting plate, and the scale is located above the two positioning blocks.

[0037] Preferably, it further comprises an oil circulation component, wherein the oil circulation component comprises:

[0038] A circulation pipe, wherein both ends of the circulation pipe are respectively arranged inside the tank body, and one end of the circulation pipe is connected to a plurality of nozzles, and the other end is connected to an oil heater;

[0039] an oil pump, disposed outside the tank body and connected to a middle section of a circulation pipe extending to the outside of the tank body;

[0040] The pressure switch is arranged outside the tank body and connected to the circulation pipe.

[0041] Preferably, the side wall of the tank body is further provided with a liquid level detection switch and a tubular liquid level indicator; and the interior of the tank body is further provided with a temperature detection sensor.

[0042] Preferably, it further comprises an equipment stand and an electrical system stand, the trough body being slidably arranged on the equipment stand; the electrical system stand being provided with an electric control box and an operating box, the electric control box being electrically connected to the operating box and the driving mechanism assembly respectively.

[0043] Preferably, the top and one side of the trough body are open; the protective cover is L-shaped and adaptively seals and covers the opening of the trough body.

[0044] This application specifically includes the following advantages:

[0045] In the embodiment of the present application, a tank body for containing lubricating oil is provided so that the gearbox lubricating oil working condition can be simulated to perform a shift fork test, and a protective cover detachably provided on the tank body can maintain a sealed state during the test, and the equipment inside the tank body can be easily repaired or replaced after the test is completed; a rotary drive mechanism is provided to connect with the synchronizer ring clamping module, the synchronizer ring clamping module is used to clamp the synchronizer ring, and the shift fork is sleeved on the synchronizer ring, so that the shift fork can be rotated to test the wear life of the shift fork fork legs; and the synchronizer ring clamping module is provided with a detachable connection end and a clamping end, so that the synchronizer clamping module and The synchronizer rings are all detachable, and thus can be replaced to suit different types of synchronizer rings, and the shift fork can be easily replaced; by setting an axial drive mechanism and connecting it to the shift fork clamping module through a transmission mechanism, the shift fork can be driven to move axially, realizing the shifting of the speed shift fork, and the shift fork can be loaded axially, and the loading force can be monitored by a force sensor to simulate the actual working conditions of the gearbox and realize the wear resistance test of the shift fork legs; by setting the shift fork clamping module as a mounting plate, a clamping piece and a positioning block that are detachably arranged on the side wall of the trough body, the shift fork and the shift fork clamping module can be disassembled and replaced, and more types of shift forks can be replaced for testing. The present application can simulate the actual working conditions of the gearbox to perform fatigue and wear resistance tests on the shift fork, and can realize the testing of different types of shift forks, and the operation is simple and convenient, which can improve the efficiency of the shift fork test and reduce the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for the description of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0047] Figure 1 Schematic diagram of the overall structure of the shift fork test system of the present invention;

[0048] Figure 2 This is a partial structural schematic diagram of the shift fork test system of the present invention when the shift fork is not installed;

[0049] Figure 3 It is a partial structural schematic diagram of the shift fork test system of the present invention when the shift fork is installed;

[0050] Figure 4 is a structural diagram of the servo control module of the present invention;

[0051] Figure 5 This is a partial structural diagram of the left axle measurement of the shift fork test system of the present invention;

[0052] Figure 6This is a pneumatic control principle diagram of the shift fork test system of the present invention;

[0053] Figure numerals: 1. Oil immersion tank assembly; 11. Tank body; 111. Fixing plate; 112. Ball lock shaft; 12. Protective cover; 121. Protective cover detection sensor; 2. Rotary drive mechanism; 21. Pneumatic servo motor; 22. Servo control module; 221. Intake source processing unit; 222. Air storage tank; 223. Manual air shut-off valve; 224. Spindle center air blowing pressure reduction; 225. Spindle air curtain pressure reduction valve; 226. Spindle air filter; 227. Electric spindle control valve group; 228. Air pressure detection sensor; 3. Axial drive mechanism; 31. Dual-axis double-acting cylinder; 32. Pneumatic control module; 321. Cylinder air shut-off valve; 322. Left-push pressure reduction valve; 323. Right-push pressure reduction valve; 324. Cylinder reversing valve group; 325. Cylinder quick exhaust valve; 4. Transmission mechanism; 41 , force sensor; 42. force transmission shaft; 43. connecting shaft; 44. connecting rod; 45. telescopic sealing cover; 5. fork clamping module; 51. mounting plate; 511. scale; 512. sealing strip; 513. strip pressure plate; 52. clamping part; 521. sliding part; 522. clamping part; 523. locking pressure rod; 524. locking block; 53. positioning block; 6. synchronizer ring clamping module; 61. stepped collar; 62. clamping plate; 63. transmission shaft; 7. oil circulation assembly; 71. circulation pipe; 72. nozzle; 73. oil heater; 74. oil pump; 75. pressure switch; 76. liquid level detection switch; 77. tubular liquid level indicator; 8. electrical system stand; 81. electric control box; 82. operation box; 9. equipment stand; 0. fork; 01. synchronizer ring. DETAILED DESCRIPTION

[0054] To make the objectives, features, and advantages of this application more readily apparent, the present application is further described below in conjunction with the accompanying drawings and specific embodiments. It is apparent that the embodiments described are only a portion of the embodiments of this application, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments in this application without inventive effort are also within the scope of protection of this application.

[0055] Reference Figure 1-Figure 3 , shows a schematic structural diagram of a fork test system of the present invention, which may specifically include:

[0056] The oil immersion tank assembly 1 includes a tank body 11 for containing lubricating oil and a protective cover 12 detachably provided on the tank body 11;

[0057] Drive mechanism assembly, including:

[0058] A rotary drive mechanism 2 axially passing through one side of the slot body 11;

[0059] and an axial drive mechanism 3 disposed outside the tank body 11 and passing through the same side of the tank body 11 via a transmission mechanism 4; wherein the transmission mechanism 4 is provided with a force sensor 41;

[0060] The fork clamping module 5 includes:

[0061] A mounting plate 51 detachably mounted on the side wall of the tank body 11;

[0062] A clamping member 52 is slidably mounted on the mounting plate 51 and is used to clamp the shift fork 0; one end of the clamping member 52 is detachably connected to the transmission mechanism 4;

[0063] Two horizontally adjustable positioning blocks 53 locked to the mounting plate 51 are used to flexibly pass through the shift fork 0 axis;

[0064] Synchronous ring clamping module 6, including:

[0065] A connecting end detachably connected to the rotary drive mechanism 2 and a clamping end for clamping and fixing the synchronizer ring 01 ; wherein the synchronizer ring 01 is adapted to the shift fork 0 .

[0066] In the embodiment of the present application, a tank body 11 for containing lubricating oil is provided so that the gearbox lubricating oil working condition can be simulated to perform a shift fork test, and a protective cover 12 detachably provided on the tank body 11 can maintain a sealed state during the test, and facilitate the maintenance or replacement of the equipment inside the tank body 11 after the test is completed; a rotary drive mechanism 2 is provided to be connected to the synchronizer ring clamping module 6, the synchronizer ring clamping module 6 is used to clamp the synchronizer ring 01, and the shift fork is sleeved on the synchronizer ring 01, so that the shift fork 0 can be rotated to test the wear life of the fork legs of the shift fork 0; and the synchronizer ring clamping module 6 is provided with a detachable connection end and a clamping end, so that the synchronizer clamping module and the synchronizer ring 0 1 are all detachable, and thus can be replaced to adapt to different models of synchronizer rings 01, and it is convenient to replace the shift fork 0; by setting an axial drive mechanism 3 and connecting it to the shift fork clamping module 5 through the transmission mechanism 4, it can drive the shift fork 0 to move axially, realize the shifting of the speed shift fork 0, and can axially load the shift fork 0, and can monitor the magnitude of the loading force through the force sensor 41, simulate the actual working condition of the gearbox, and realize the wear resistance test of the fork leg of the shift fork 0; by setting the shift fork clamping module 5 as a mounting plate 51, a clamping piece 52 and a positioning block 53 that are detachably arranged on the side wall of the trough body 11, the shift fork 0 and the shift fork clamping module 5 can be disassembled and replaced, and more models of shift forks 0 can be replaced for testing. The present application can simulate the actual working condition of the gearbox to perform fatigue and wear resistance tests on the shift fork 0, and can realize the testing of different models of shift forks 0, and the operation is simple and convenient, which can improve the efficiency of the shift fork 0 test and reduce the cost.

[0067] Next, a shift fork 0 test system in this exemplary embodiment will be further described.

[0068] In the examples of this application, refer to Figure 1 The oil tank assembly 1 comprises a tank body 11 for holding lubricating oil and a removable protective cover 12 attached to tank body 11. During testing, the shift fork 0 is located within tank body 11 and partially immersed in lubricating oil, simulating transmission operating conditions. The removable protective cover 12 not only seals tank body 11 but also facilitates maintenance or replacement of internal components, such as different models of shift forks 0 and corresponding synchronizer rings 01.

[0069] As an example, the top and one side of the tank body 11 are open; the protective cover 12 is L-shaped and fits snugly and seals the opening of the tank body 11. Specifically, the protective cover 12 can be connected to the side wall of the tank body 11 via a buckle, and a pressure plate can be provided on the top of the tank body 11 to press the protective cover 12 onto the tank body 11. The pressure plate is fixed by bolts. When the protective cover 12 needs to be removed, the bolts of the pressure plate are removed, the pressure plate is removed, and the buckle is loosened at the same time to remove the protective cover 12.

[0070] Furthermore, a sealing strip is provided at the opening edge of the trough body 11 to achieve abutment and sealing with the protective cover 12, thereby improving the sealing performance during testing.

[0071] Furthermore, transparent windows may be provided on the front surface and top surface of the protective cover 12 and the side walls of the tank body 11 to facilitate observation of the internal working conditions from multiple angles.

[0072] Further, refer to Figure 2 A protective cover detection sensor 121 can be set on one side of the top of the above-mentioned trough body 11, which can be a photoelectric sensor or a laser sensor, etc., for detecting whether the protective cover 12 is installed, so as to send start and stop signals to other equipment to ensure safety. For example, when it is detected that the protective cover 12 is open, the drive mechanism component is controlled to stop to avoid injury to the operator or damage to the equipment.

[0073] In this embodiment, the synchronizer ring clamping module 6 includes a connection end that is detachably connected to the rotary drive mechanism 2 and a clamping end for clamping and securing the synchronizer ring 01. The synchronizer ring 01 is adapted to fit the shift fork 0. The rotary drive mechanism 2 axially passes through one side of the slot 11, driving the synchronizer ring clamping module 6 to rotate, thereby driving the synchronizer ring 01. The shift fork 0 is mounted on the synchronizer ring 01, thereby driving the shift fork 0 to rotate at a specified speed.

[0074] It should be noted that the connection end of the synchronizer ring clamping module 6 is detachably connected to the rotary drive mechanism 2, allowing for assembly and disassembly of the synchronizer ring 0 and the fork clamping module 5 to facilitate replacement of the shift fork 0 and the shift fork clamping module 5 without obstruction. The clamping end of the synchronizer ring clamping module 6 is used to clamp the synchronizer ring 01. This clamping method allows synchronizer ring 01 to be disassembled and replaced, facilitating replacement of synchronizer ring 01 compatible with the shift fork 0.

[0075] In the examples of this application, refer to Figure 2-Figure 5 The shift fork clamping module 5 comprises a mounting plate 51 removably mounted on the side wall of the trough 11 and a clamping member 52 slidably mounted on the mounting plate 51. The clamping member 52 is used to clamp the ends of the shift fork 0, facilitating removal and replacement of the shift fork 0. The axial drive mechanism 3 is inserted through the trough 11 via the transmission mechanism 4. One end of the clamping member 52 is removably connected to the transmission mechanism 4, thereby driving the clamping member 52 to synchronously move the shift fork 0 axially, achieving gear shifting of the shift fork 0. It also applies axial load to the shift fork 0 to simulate transmission operating conditions and coordinate with the rotation of the synchronizer ring 01 to test the wear resistance of the shift fork 0. The removable connection allows the clamping member 52 to be separated from the transmission mechanism 4, facilitating assembly and disassembly. The removable mounting plate 51 and clamping member 52 allow the shift fork clamping module 5 to be assembled and disassembled as a whole. It also includes two horizontally adjustable positioning blocks 53 that are locked to the mounting plate 51 and are used to flexibly insert the shift fork 0 shaft. The two positioning blocks 53 can play a positioning and guiding role in the axial movement of the shift fork 0, and the adjustable positioning blocks 53 can be applicable to different models of shift forks 0 and are convenient for replacing the shift fork 0.

[0076] It should be noted that for different models of shift forks 0 of the same vehicle series, only the shift fork 0 and the corresponding synchronizer ring 01 need to be replaced. However, the shift forks 0 of different vehicle series and models have significant differences in structure and size. Therefore, through the overall disassembly and assembly of the shift fork clamping module 5, different shift fork clamping module 5 tooling can be replaced to clamp different models of shift forks 0. Through the above design, the application can be applied to more models of shift forks 0 and has a wide range of applications.

[0077] In addition, if Figure 3 The transmission mechanism 4 is provided with a force sensor 41, which is used to monitor the loading force, so as to control the loading force and loading time of the shift fork 0.

[0078] Specifically, set the specified loading force and loading time according to the test condition table, activate the axial drive mechanism 3, and begin the fork leg wear resistance test. The test cycle (using 1 / 3 gear as an example) is as follows: After the axial drive mechanism 3 is activated, push the shift fork 0 from the neutral position toward 1st gear. The force sensor 41 reading increases from zero to 600N and maintains a force of 600N for 0.7s. The axial drive mechanism 3 is then unloaded, and the force sensor 41 reading returns to zero. Then, push the shift fork 0 in the reverse direction toward 3rd gear. The force sensor 41 reading increases from zero to 600N and maintains a force of 600N for 0.4s. The axial drive mechanism 3 is then unloaded, and the force sensor 41 reading returns to zero. This constitutes a complete test cycle. The test should complete the number of cycles specified in the test condition table. During the test, the test object should be observed and recorded every four hours, focusing on the weld condition, bearing looseness, adequate lubrication, and normal leg wear.

[0079] As an example, the above-mentioned rotary drive mechanism 2 includes a pneumatic servo motor 21 and a servo control module 22. The main shaft of the pneumatic servo motor 21 is passed through the side wall of the trough body 11 and is sealed with the side wall of the trough body 11 by a flange and a sealing ring. A clamping structure is provided in the driving end of the main shaft for clamping the synchronizer ring clamping module 6. It should be noted that the clamping structure can adopt the clamping structure or tensioning structure between the machine tool tool and the rotating shaft in the prior art to achieve the clamping and release of the tool. This embodiment preferably adopts the automatic tool changing structure on the machine tool, which is controlled by the tool pulling and unloading cylinder. When changing the tool, clicking the tool switching button controls the tool pulling and unloading cylinder to achieve tool changing. In this embodiment, the synchronizer ring clamping module 6 can be quickly disassembled and assembled.

[0080] like Figure 4 The servo control module 22 is connected to the pneumatic servo motor 21 and is used to control the pneumatic servo motor 21 to drive the synchronizer ring 01 to rotate at high speed and stability. The servo control module 22 utilizes a conventional module assembly, specifically including: an air inlet source processing unit 221, an air storage tank 222, a manual air shutoff valve 223, a spindle center air pressure relief valve 224, a spindle air curtain pressure relief valve 225, a spindle air filter 226, an electric spindle control valve assembly 227, and an air pressure detection sensor 228. This module implements pneumatic control of the pneumatic servo motor 21, achieving stable high speed.

[0081] As an example, Figure 5The clamping end of the synchronizer ring clamping module 6 includes a stepped collar 61 and a clamping plate 62. The clamping plate 62 is connected to the stepped collar 61 by a locking screw and cooperates with the stepped collar 61 to form an annular groove for the synchronizer ring 01 to be mounted. In this way, when disassembling the synchronizer ring 01, a special tool such as a wrench is used to first fix the stepped collar 61, and then loosen the locking screw and remove the clamping plate 62. The synchronizer ring 01 can be disassembled, and the installation can be carried out in reverse order.

[0082] The above-mentioned connecting end includes a transmission shaft 63, which is integrally connected to the end of the stepped collar 61 away from the clamping disk 62. The transmission shaft 63 is detachably connected to the clamping structure, that is, the clamping structure mentioned above is used to clamp or release the transmission shaft 63 at the end of the stepped collar.

[0083] Specifically, the portion of the drive shaft 63 near the stepped collar 61 is shaped to fit a specialized wrench, making it easy to grip with the wrench. When removing or installing the synchronizer ring 01, simply secure the drive shaft 63 and loosen the locking screw. To disassemble the synchronizer ring clamping module 6, simply click the tool switch button to remove the drive shaft 63 from the spindle hole. To install it, simply insert the drive shaft 63 into the spindle hole and click the tool switch button again to secure it.

[0084] As an example, see Figure 3 The above-mentioned axial drive mechanism 3 includes a dual-axis compound cylinder 31 and a pneumatic control module 32. The pneumatic control module 32 is connected to the dual-axis compound cylinder 31 and is used to control the axial loading force of the dual-axis compound cylinder 31 on the shift fork 0. By using the dual-axis compound cylinder 31, when testing the shift fork 0, the output force at both ends can be equal, and fine-tuning can be performed through the pneumatic control module 32 to ensure that the force of the forward and reverse movement of the shift fork 0 is the same, thereby improving the test effect. The above-mentioned pneumatic control module 32 is composed of modules in the prior art, and can specifically include: a cylinder air shut-off valve 321, a left-push pressure reducing valve 322, a right-push pressure reducing valve 323, a cylinder reversing valve group 324 and two groups of cylinder quick exhaust valves 325. The above-mentioned modules can realize efficient response of the cylinder, and when replacing different models of shift forks 0, the air can be released through the exhaust valve, and the cylinder can be manually pushed to facilitate the replacement of different models of shift forks 0. Together with the servo control module 22, it constitutes the pneumatic control unit of this system, such as Figure 6 , is a pneumatic control principle diagram of a specific embodiment of the present application.

[0085] As an example, the transmission mechanism 4 includes a force transmission shaft 42, a connecting shaft 43, and a connecting rod 44. Two force transmission shafts 42 are provided, which are respectively connected to the two ends of the force sensor 41; one of the force transmission shafts 42 is connected to the dual-axis double-acting cylinder 31; one end of the connecting shaft 43 is connected to the other force transmission shaft 42, and the other end of the connecting shaft 43 is passed through the side wall of the trough body 11 and is hinged to the connecting rod 44 through a hinge pin; the connecting rod 44 is inserted and locked to one end of the clamping member 52. Through the above structure, the loading force of the dual-axis double-acting cylinder 31 can be transmitted to the clamping member 52, and then transmitted to the shift fork 0, and the loading force is detected by the force sensor 41. The above connecting rod 44 is hinged to the connecting shaft 43 by a hinge pin. When replacing a different model of shift fork 0, the hinge pin can be removed for easy replacement.

[0086] Specifically, when replacing a different model of shift fork 0, remove the spring retaining ring of the hinge pin, disassemble the hinge pin, and then separate the connecting rod 44 from the connecting shaft 43. After separation, move the connecting rod 44 to adjust the depth of its other end inserted into the clamping member 52. Then, clamp the different model of shift fork 0 on the clamping member 52. After clamping, move the connecting rod 44 left and right to lock one end with the clamping member 52. The locking can be done using any locking member in the existing technology, such as a spring retaining ring, a lock nut and a washer. The other end is hinged to the connecting shaft 43. In other words, the length of the connecting rod 44 can be adjusted through the hinge pin connection, and different models of shift forks 0 can be clamped.

[0087] As an example, the sidewall of the trough 11 is provided with a through-hole for the connecting shaft 43 to flexibly pass through. A telescopic sealing cover 45 is disposed outside the through-hole. The telescopic sealing cover 45 is conical in shape, with its larger end sealing against the outside of the through-hole and its smaller end connected to the adjacent force transmission shaft 42. The telescopic sealing cover 45 provides a dynamic seal for the through-hole without affecting the axial movement of the transmission mechanism 4.

[0088] As an example, the mounting plate 51 is transversely defined with multiple mounting holes, divided into two groups, corresponding to two positioning blocks 53. The positioning blocks 53 are L-shaped and include a horizontal adjustment portion having a waist-shaped hole formed therein. The horizontal adjustment portion is secured to the mounting hole by a locking screw. This allows for horizontal adjustment of the positioning blocks 53, making the spacing between the two positioning blocks 53 adjustable and facilitating the removal of the shift fork 0. The positioning blocks 53 also include a vertical positioning portion having an axial hole formed therein, within which a shaft sleeve is disposed. The shaft of the shift fork 0 forms a clearance fit with the shaft sleeve. When the dual-axis double-acting cylinder 31 drives the clamping member 52 to cause the shift fork 0 to move axially, the shift fork 0 and the positioning blocks 53 move relative to each other.

[0089] As an example, Figure 5The clamping member 52 is U-shaped and positioned below the horizontal adjustment portion. It includes a sliding portion 521 and a clamping portion 522. The sliding portion 521 slides on a slide rail provided on the mounting plate 51, and one end of the sliding portion 521 is locked and connected to the connecting rod 44. That is, the mounting plate 51 is provided with a slide rail, and the sliding portion 521 is slidably connected to the slide rail via a slider, which serves to guide and limit the movement of the sliding portion 521. The clamping portions 522 are provided at both ends of the sliding portion 521 and are used to clamp the ends of the shift fork 0. One of the clamping portions 522 is provided with a locking block 524, and the other clamping portion 522 is adjustably provided with a locking pressure rod 523 and secured by a locking member. The locking member can be any locking structure, such as a spring retaining ring, a locking nut and a washer. The above-mentioned locking block 524 and locking pressure rod 523 are in surface contact with both ends of the fork 0 shaft. The locking block 524 is fixedly arranged, and the locking pressure rod 523 is adjustably inserted into the clamping portion 522, so that the distance between the locking pressure rod 523 and the locking block 524 is adjustable, and the fork 0 can be clamped or loosened, which is convenient for fixing the fork 0, as well as for disassembling the fork 0 and clamping different models of forks 0.

[0090] Furthermore, if Figure 5 The mounting plate 51 is laterally provided with a scale 511, which is located above the two positioning blocks 53. The scale 511 is used to adjust and fix the position of the positioning blocks 53. For different models of shift forks 0, the spacing between the two positioning blocks 53 is different, and the scale 511 can be used to adjust the spacing according to the size of the shift fork 0.

[0091] Specifically, to remove shift fork 0, loosen locking lever 523 and withdraw it to the right. Then, loosen the locking screws on both positioning blocks 53 and move the right positioning block 53 off the shaft of shift fork 0. Then, remove shift fork 0. To replace a shift fork 0 of the same model, simply reinstall it in reverse order, securing the left and right positioning blocks 53 at their original scales. While tightening the right locking lever 523, ensure that the synchronizer ring clamping module 6 drives synchronizer ring 01 smoothly. Manually rotate the spindle for debugging. When you need to replace a different model of shift fork 0, remove the retaining ring on the hinge pin on the left side of the connecting rod 44, then remove the hinge pin, loosen the left connecting rod 44 and screw it slightly to the right into the hole of the clamp 52, install the shift fork 0 according to the steps for replacing the same model of shift fork 0 and lock it; then adjust the extension size of the left connecting rod 44 and move it left and right so that the hinge pin can be inserted into the hole for connection. It should be noted that when necessary, the left and right movement of the connecting rod 44 requires first cutting off the air intake of the double-axis compound cylinder 31, and then exhausting it several times before the cylinder can be pushed manually. At the same time, observe that the extension lengths of the two ends of the axis of the double-axis compound cylinder 31 are basically equal to ensure the consistency of the left and right movement strokes. After completion, install the retaining ring on the hinge pin, otherwise readjust it.

[0092] As an example, Figure 3 and Figure 5 The side wall of the tank body 11 is provided with a notch, and a fixing plate 111 is provided at the notch, and a sealing strip is used to seal the fixing plate 111 and the edge of the notch; the four corners of the mounting plate 51 are connected to the inner side of the fixing plate 111 by locking screws and ball lock shafts 112, and the top of the mounting plate 51 is provided with an upper sealing strip 512 that abuts against the protective cover 12, and the bottom of the mounting plate 51 is provided with a strip pressure plate 513 for pressing the mounting plate 51. By slotting the fixing plate 111 in the side wall of the tank body 11 for mounting and fixing the mounting plate 51, the mounting plate 51 can be set to a certain thickness to give it a certain strength, which is convenient for fixing the mounting plate 51. The use of multiple sealing strips 512 and strip pressure plates 513 can improve the sealing performance at the notch. This can solve the problem of insufficient rigidity of the oil tank and avoid the difficulty of sealing and maintenance in the later stage due to the enlargement of the oil tank.

[0093] As an example, Figure 2 and Figure 3 , also includes an oil circulation assembly 7, which includes a circulation pipe 71. The two ends of the circulation pipe 71 are located within the tank body 11, with one end connected to multiple nozzles 72 and the other end connected to an oil heater 73. The oil heater 73 heats the lubricating oil to the appropriate temperature, i.e., the operating temperature of the transmission (typically 80°C). An oil pump 74 is located outside the tank body 11 and connected to the middle section of the circulation pipe 71, which extends outside the tank body 11. The oil in the tank body 11 is self-circulated through the oil pump 74, spraying it from the multiple nozzles 72 onto the synchronizer ring 01 and the shift fork 0, simulating the operating conditions of the transmission lubricating oil, thereby more efficiently and accurately testing the shift fork 0. A pressure switch 75 is located outside the tank body 11 and connected to the circulation pipe 71. It monitors the output pressure of the oil pump 74 and automatically protects the oil pump 74 and the pipeline by automatically switching the circuit on and off, ensuring stable pressure.

[0094] Furthermore, the sidewalls of the tank 11 are also equipped with a liquid level detection switch 76 and a tubular liquid level indicator 77. The liquid level detection switch 76 triggers a switch signal at a set liquid level, which is used to alarm or start or stop the oil pump 74, or to inject or drain liquid. The tubular liquid level indicator 77 directly displays the liquid level through a transparent tube, allowing manual reading. A temperature sensor is also installed within the tank 11 to monitor the lubricating oil temperature and can be linked to the oil heater 73 to adjust the heating temperature.

[0095] As an example, Figure 1, also includes an equipment stand 9 and an electrical system stand 8. The tank body 11 is slidably mounted on the equipment stand 9. Its sliding mode can be achieved by the combination of a slide groove and a slider, and the position can be fixed by bolts and other structures to make the oil immersion tank position adjustable. The electrical system stand 8 is provided with an electric control box 81 and an operating box 82. The electric control box 81 is electrically connected to the operating box 82 and the drive mechanism components respectively. The electric control box 81 is responsible for the power distribution, protection, logic control and signal processing of the system. The operating box 82 is provided with a human-machine interactive screen, providing a human-machine interactive interface for manual operation, status monitoring and emergency control. The staff can control the operation of the dual-axis double-acting cylinder 31, the pneumatic servo motor 21, the oil heater 73, the oil pump 74 and other equipment on the operating box 82 to achieve periodic testing of the shift fork 0.

[0096] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they become aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0097] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or terminal device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or terminal device that includes the element.

[0098] The fork test system provided by the present invention is introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the ideas of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A fork test system, characterized in that: include: An oil immersion tank assembly, comprising a tank body for containing lubricating oil and a protective cover detachably provided on the tank body; Drive mechanism assembly, including: A rotary drive mechanism axially passing through one side of the trough body; the rotary drive mechanism includes a pneumatic servo motor and a servo control module; The main shaft of the pneumatic servo motor is passed through the side wall of the slot body; and a clamping structure is provided in the driving end of the main shaft for clamping the synchronizer ring clamping module; The servo control module is connected to the pneumatic servo motor and is used to control the pneumatic servo motor to drive the synchronizer ring to rotate at high speed and stability; and an axial drive mechanism disposed outside the tank body and passing through the same side of the tank body via a transmission mechanism; wherein the transmission mechanism is provided with a force sensor; Scotch fork clamping module, including: A mounting plate detachably arranged on the side wall of the tank body; A clamping member slidably disposed on the mounting plate, for clamping the shift fork; one end of the clamping member is detachably connected to the transmission mechanism; Two positioning blocks that can be adjusted horizontally and locked to the mounting plate are used for movably passing the shift fork shaft; Synchronous ring clamping module, including: A connecting end detachably connected to the rotary drive mechanism, and a clamping end for clamping and fixing a synchronizer ring; wherein the synchronizer ring is adapted to the shift fork.

2. The shift fork test system according to claim 1, characterized in that: The clamping end includes a stepped collar and a clamping disc, wherein the clamping disc is connected to the stepped collar through a locking member and cooperates with the stepped collar to form an annular groove for the synchronization ring to be sleeved; The connecting end comprises a transmission shaft, the transmission shaft is integrally connected to an end of the stepped collar away from the clamping disc, and the transmission shaft is detachably connected to the clamping structure.

3. The shift fork test system according to claim 1, characterized in that: The axial drive mechanism includes a dual-axis double-acting cylinder and a pneumatic control module. The pneumatic control module is connected to the dual-axis double-acting cylinder and is used to control the axial loading force of the dual-axis double-acting cylinder on the shift fork.

4. The shift fork test system according to claim 3, characterized in that: The transmission mechanism includes a force transmission shaft, a connecting shaft and a connecting rod; Two force transmission shafts are provided, which are respectively connected to the two ends of the force sensor; one of the force transmission shafts is connected to the dual-axis double-acting cylinder; One end of the connecting shaft is connected to the other force transmission shaft, and the other end of the connecting shaft is passed through the side wall of the trough body and is hinged to the connecting rod; The connecting rod is inserted into and locked at one end of the clamping member.

5. The shift fork test system according to claim 4, characterized in that: A through hole is provided on the side wall of the trough body for the connecting shaft to movably pass through, and a telescopic sealing cover is arranged outside the through hole.

6. The shift fork test system according to claim 4, characterized in that: The mounting plate is transversely provided with a plurality of mounting holes; The positioning block is L-shaped and includes: The horizontal adjustment part is provided with a waist-shaped hole, which is fixed with the mounting hole by a locking screw; The vertical positioning portion is provided with an axial hole, and a shaft sleeve is provided in the axial hole; The shift fork shaft and the shaft sleeve form a clearance fit.

7. The shift fork test system according to claim 6, characterized in that: The clamping member is U-shaped and is arranged below the horizontal adjustment portion, and includes: a sliding portion, the sliding portion being slidably disposed on a slide rail disposed on the mounting plate, and one end of the sliding portion being lockedly connected to the connecting rod; The clamping parts are arranged at both ends of the sliding part and are used to clamp the two ends of the fork; one of the clamping parts is provided with a locking block, and the other clamping part is adjustably penetrated by a locking pressure rod and fixed by a locking piece.

8. The shift fork test system according to claim 1, characterized in that: The side wall of the trough body is provided with a notch, a fixing plate is provided at the notch, and the fixing plate and the edge of the notch are sealed by a sealing strip; the four corners of the mounting plate are connected to the inner side of the fixing plate by locking screws and a ball lock shaft, and the top of the mounting plate is provided with an upper sealing strip that abuts against the protective cover, and the bottom of the mounting plate is provided with a strip pressure plate for pressing the mounting plate.

9. The shift fork test system according to claim 1, characterized in that: A scale is laterally arranged on the mounting plate, and the scale is located above the two positioning blocks.

10. The shift fork test system according to any one of claims 1 to 9, characterized in that: It also includes an oil circulation component, the oil circulation component including: A circulation pipe, wherein both ends of the circulation pipe are respectively arranged inside the tank body, and one end of the circulation pipe is connected to a plurality of nozzles, and the other end is connected to an oil heater; an oil pump, disposed outside the tank body and connected to a middle section of a circulation pipe extending to the outside of the tank body; The pressure switch is arranged outside the tank body and connected to the circulation pipe.

11. The shift fork test system according to claim 10, characterized in that: The side wall of the tank body is also provided with a liquid level detection switch and a tubular liquid level indicator; the interior of the tank body is also provided with a temperature detection sensor.

12. The shift fork testing system according to claim 1, characterized in that: It also includes an equipment stand and an electrical system stand, the trough body is slidably arranged on the equipment stand; the electrical system stand is provided with an electric control box and an operating box, and the electric control box is electrically connected to the operating box and the driving mechanism assembly respectively.

13. The shift fork testing system according to claim 1, characterized in that: The top and one side of the trough body are open; the protective cover is L-shaped and adaptively seals and covers the opening of the trough body.

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