Shifting fork test system

Abstract

The embodiment of the invention provides a shifting fork testing system, and relates to the field of speed change shifting fork testing. Comprising a tank body for containing lubricating oil and a protective cover detachably arranged on the tank body; the driving mechanism assembly comprises a rotary driving mechanism axially penetrating through one side of the groove body; the axial driving mechanism is arranged on the same side of the groove body in a penetrating manner through a transmission mechanism; the transmission mechanism is provided with a force sensor; the shifting fork clamping module comprises a mounting plate which is detachably arranged on the side wall of the groove body; the clamping piece is slidably arranged on the mounting plate, and one end of the clamping piece is detachably connected to the transmission mechanism; the two positioning blocks can be horizontally adjusted and locked on the mounting plate; the synchronous ring clamping module comprises a connecting end detachably connected with the rotary driving mechanism and a clamping end. The device can simulate the real working condition of a gearbox to carry out fatigue and wear resistance testing on the shifting fork, can achieve the testing of different models of shifting forks, is simple and convenient to operate, can improve the testing efficiency of the shifting fork, and can reduce the cost.

Description

Technical Field

[0001] The present invention relates to the field of variable-speed fork detection, and particularly to a fork test system. Background Art

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

[0003] In the prior art, the research on the reliability and fatigue resistance of the variable-speed fork is mainly carried out after the whole machine is installed. If the above performances are studied in the whole machine, a large amount of time and effort are required for the disassembly and assembly of the whole machine and the debugging of the test equipment, resulting in the whole test work becoming cumbersome and inefficient. Summary of the Invention

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

[0005] A fork test system includes: An oil immersion tank assembly, including a tank body for containing lubricating oil and a protective cover detachably arranged on the tank body; A driving mechanism assembly, including: A rotary driving mechanism axially passing through one side of the tank body; And an axial driving mechanism arranged outside the tank body and axially passing through the same side of the tank body through a transmission mechanism; wherein, a force sensor is arranged on the transmission mechanism; A fork clamping module, including: A mounting plate detachably arranged on the side wall of the tank body; A clamping member slidably arranged on the mounting plate for clamping the fork; one end of the clamping member is detachably connected to the transmission mechanism; Two positioning blocks horizontally adjustable and lockable on the mounting plate for movably passing through the fork shaft; A synchronizing ring clamping module, including: A connection end detachably connected to the rotary driving mechanism and a clamping end for clamping and fixing the synchronizing ring; wherein, the synchronizing ring is adapted to the fork.

[0006] Preferably, the rotary driving mechanism includes a pneumatic servo motor and a servo control module, The main shaft of the pneumatic servo motor passes through the side wall of the tank body; and a clamping structure is arranged at the driving end of the main shaft for clamping the synchronizing ring clamping module; The servo control module is connected to the pneumatic servo motor for controlling the pneumatic servo motor to drive the synchronizing ring to rotate at a high speed and stably.

[0007] Preferably, the clamping end includes a stepped collar and a clamping disc. 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 sleeving the synchronizing ring. The connecting end includes a transmission shaft, which is integrally connected to one end of the stepped collar away from the clamping disc, and the transmission shaft is detachably connected to the clamping structure.

[0008] Preferably, the axial driving mechanism includes a double-acting cylinder and a pneumatic control module. The pneumatic control module is connected to the double-acting cylinder and is used to control the axial loading force of the double-acting cylinder acting on the fork.

[0009] Preferably, 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 both ends of the force sensor; one of the force transmission shafts is connected to the 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 passes through the side wall of the groove body and is hinged to the connecting rod. The connecting rod is inserted and locked at one end of the clamping member.

[0010] Preferably, a through hole for the connecting shaft to pass through movably is provided on the side wall of the groove body, and a telescopic sealing cover is arranged outside the through hole.

[0011] Preferably, the mounting plate is horizontally provided with a plurality of mounting holes. The positioning block is L-shaped and includes: A horizontal adjusting part, which is provided with a waist-shaped hole and is fixed in cooperation with the mounting hole through a locking screw. A vertical positioning part, which is provided with a shaft hole, and a shaft sleeve is arranged in the shaft hole. The fork shaft and the shaft sleeve form a clearance fit.

[0012] Preferably, the clamping member is U-shaped and is arranged below the horizontal adjusting part, and includes: A sliding part, which is slidably arranged on the slide rail arranged on the mounting plate, and one end of the sliding part is tightly connected to the connecting rod. A clamping part, which is arranged at both ends of the sliding part and is used to clamp both ends of the fork; a locking block is arranged on one of the clamping parts, and a locking pressure rod is adjustably arranged on the other clamping part and is fixed through a locking member.

[0013] Preferably, a notch is provided on the side wall of the tank body, and 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 through locking screws and ball lock shafts, and an upper sealing strip abutting against the protective cover is provided at the top of the mounting plate, and a rubber strip pressing plate for pressing the mounting plate is provided at the bottom of the mounting plate.

[0014] Preferably, a scale is transversely provided on the mounting plate, and the scale is located above the two positioning blocks.

[0015] Preferably, it further includes an oil liquid circulation assembly, and the oil liquid circulation assembly includes: A circulation pipe, both ends of the circulation pipe are respectively arranged inside the tank body, one end of which is connected with a plurality of nozzles, and the other end is connected with an oil liquid heater; An oil pump, arranged outside the tank body and connected to the middle section of the circulation pipe extending outside the tank body; A pressure switch, arranged outside the tank body and connected to the circulation pipe.

[0016] Preferably, a liquid level detection switch and a tubular liquid level indicator are further provided on the side wall of the tank body; a temperature detection sensor is further provided inside the tank body.

[0017] Preferably, it further includes an equipment bench and an electrical system bench, and the tank body is slidably arranged on the equipment bench; the electrical system bench is provided with an electric control box and an operation box, and the electric control box is electrically connected to the operation box and the drive mechanism assembly respectively.

[0018] Preferably, the top and one side of the tank body are open; the protective cover is L-shaped and hermetically covers the opening of the tank body in a matching manner.

[0019] The present application specifically includes the following advantages: In the embodiments of the present application, by providing a tank for containing lubricating oil, it is possible to simulate the lubricating oil working conditions of a gearbox for a fork test, and a protective cover detachably provided on the tank enables a sealed state during the test and facilitates the maintenance or replacement of the equipment inside the tank after the test; by providing a rotary drive mechanism connected to a synchronizer ring clamping module, the synchronizer ring clamping module is used to clamp the synchronizer ring, and the fork is sleeved on the synchronizer ring, enabling the fork to perform a rotary motion to test the wear life of the fork feet; and by setting the synchronizer ring clamping module as a detachable connection end and clamping end, the synchronizer clamping module and the synchronizer ring are both detachable, thereby enabling the replacement of synchronizer rings of different models and facilitating the replacement of the fork; by providing an axial drive mechanism and connecting it to the fork clamping module through a transmission mechanism, it is possible to drive the fork to move axially, achieve the gear shifting of the shift fork, and be able to axially load the fork and monitor the magnitude of the loading force through a force sensor, simulate the real working conditions of the gearbox, and achieve the wear resistance test of the fork feet; by setting the fork clamping module as a mounting plate detachably provided on the side wall of the tank, a clamping member and a positioning block, the fork and the fork clamping module can both be disassembled and replaced, and more models of forks can be replaced for testing. The present application can simulate the real working conditions of the gearbox to conduct fatigue and wear resistance tests on the fork, and can realize the testing of forks of different models, and is simple and convenient to operate, which can improve the test efficiency of the fork and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the present application, the drawings required for use in the description of the present application will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 is the overall structural schematic diagram of the fork test system of the present invention; Figure 2 is the partial structural schematic diagram of the fork test system of the present invention without the fork installed; Figure 3 is the partial structural schematic diagram of the fork test system of the present invention with the fork installed; Figure 4 is the structural schematic diagram of the servo control module of the present invention; Figure 5 is the partial structural schematic diagram of the left axonometric view of the fork test system of the present invention; Figure 6 is the pneumatic control schematic diagram of the fork test system of the present invention; Reference numerals: 1. Oil immersion tank assembly; 11. Tank body; 111. Fixed plate; 112. Ball locking shaft; 12. Protective cover; 121. Protective cover detection sensor; 2. Rotation drive mechanism; 21. Pneumatic servo motor; 22. Servo control module; 221. Intake air origin treatment part; 222. Air storage tank; 223. Manual air cut-off main valve; 224. Spindle center air blowing pressure reduction; 225. Spindle air curtain pressure reducing valve; 226. Spindle air filter; 227. Electric spindle control valve group; 228. Air pressure detection sensor; 3. Axial drive mechanism; 31. Double-acting cylinder; 32. Pneumatic control module; 321. Cylinder air cut-off valve; 322. Left push pressure reducing valve; 323. Right push pressure reducing 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 seal cover; 5. Fork clamping module; 51. Mounting plate; 511. Scale; 512. Sealing strip; 513. Sealing strip pressing plate; 52. Clamping part; 521. Sliding part; 522. Clamping part; 523. Locking pressure rod; 524. Locking block; 53. Positioning block; 6. Synchronous ring clamping module; 61. Step-type collar; 62. Clamping disc; 63. Transmission shaft; 7. Oil circulation component; 71. Circulation pipe; 72. Nozzle; 73. Oil heater; 74. Oil pump; 75. Pressure switch; 76. Liquid level detection switch; 77. Tube-type liquid level indicator; 8. Electrical system bench; 81. Electric control box; 82. Control box; 9. Equipment bench; 0. Fork; 01. Synchronous ring. Detailed implementation manners

[0022] In order to make the objectives, features, and advantages of the present application more obvious and understandable, the present application will be further described in detail below with reference to the accompanying drawings and specific implementation manners. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application. Refer to Figures 1 - 3 , which shows a structural schematic diagram of a fork test system of the present invention, specifically including: An oil immersion tank assembly 1, including a tank body 11 for containing lubricating oil and a protective cover 12 detachably provided on the tank body 11; A drive mechanism assembly, including: A rotation drive mechanism 2 axially passing through one side of the tank body 11; And an axial drive mechanism 3 provided outside the tank body 11 and axially passing through the same side of the tank body 11 through a transmission mechanism 4; wherein, a force sensor 41 is provided on the transmission mechanism 4; A fork clamping module 5, including: The mounting plate 51 detachably arranged on the side wall of the tank body 11; The clamping member 52 slidably arranged on the mounting plate 51 is used for clamping the shift fork 0; one end of the clamping member 52 is detachably connected to the transmission mechanism 4; Two positioning blocks 53 that can be horizontally adjusted and locked to the mounting plate 51 are used for movably passing through the shift fork 0 shaft; The synchronizer ring clamping module 6 includes: The connection end detachably connected to the rotary drive mechanism 2 and the clamping end for clamping and fixing the synchronizer ring 01; wherein, the synchronizer ring 01 is adapted to the shift fork 0.

[0023] In the embodiment of the present application, by arranging the tank body 11 filled with lubricating oil, the shift fork test can be carried out by simulating the lubricating oil working condition of the gearbox, and the protective cover 12 detachably arranged on the tank body 11 enables the sealing state to be maintained during the test, and it is convenient to repair or replace the equipment inside the tank body 11 after the test; by arranging the rotary drive mechanism 2 to be connected to the synchronizer ring clamping module 6, the synchronizer ring clamping module 6 is used for clamping the synchronizer ring 01, and the shift fork is sleeved on the synchronizer ring 01, so that the shift fork 0 can be driven to rotate to test the wear life of the shift fork 0 fork feet; and by setting the synchronizer ring clamping module 6 as a detachable connection end and clamping end, the synchronizer clamping module and the synchronizer ring 01 are both detachable, so that different models of synchronizer rings 01 can be replaced, and it is convenient to replace the shift fork 0; by arranging the axial drive mechanism 3 and connecting it to the shift fork clamping module 5 through the transmission mechanism 4, the shift fork 0 can be driven to move axially, realizing the gear shift of the shift fork 0 for speed change, and the shift fork 0 can be axially loaded, and the loading force can be monitored by the force sensor 41, simulating the real working condition of the gearbox, and realizing the wear resistance test of the shift fork 0 fork feet; by setting the shift fork clamping module 5 as the mounting plate 51 detachably arranged on the side wall of the tank body 11, the clamping member 52 and the positioning block 53, 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 real working condition of the gearbox to carry out fatigue and wear resistance tests on the shift fork 0, and can realize the tests of different models of shift forks 0, and the operation is simple and convenient, which can improve the test efficiency of the shift fork 0 and reduce the cost.

[0024] Next, a shift fork 0 test system in this exemplary embodiment will be further described.

[0025] In the embodiment of the present application, refer to Figure 1, the above-mentioned oil immersion tank assembly 1 includes a tank body 11 for containing lubricating oil and a protective cover 12 detachably arranged on the tank body 11. When the fork 0 is being tested, it is located inside the tank body 11 and can be partially immersed in the lubricating oil to simulate the working conditions of a gearbox. The detachable protective cover 12 not only seals the tank body 11 but also facilitates the maintenance or replacement of internal equipment, and is convenient for replacing different models of forks 0 and the matching synchronizer rings 01.

[0026] As an example, the top and one side of the above-mentioned tank body 11 are open; the protective cover 12 is L-shaped and is hermetically covered on the opening of the tank body 11 in a matching manner. Specifically, the protective cover 12 can be connected to the side wall of the tank body 11 through a buckle, and a pressing plate can be arranged on the top of the tank body 11 to press the protective cover 12 onto the tank body 11. The pressing plate is fixed by bolts. When it is necessary to disassemble the protective cover 12, remove the bolts of the pressing plate, take off the pressing plate, and at the same time loosen the buckle, then the protective cover 12 can be taken off.

[0027] Furthermore, a sealing strip is arranged on the opening edge of the above-mentioned tank body 11 to achieve abutting sealing with the protective cover 12, improving the sealing performance during testing.

[0028] Furthermore, transparent windows can be arranged on the front, top surface of the above-mentioned protective cover 12 and the side wall of the tank body 11, facilitating the observation of internal working conditions from multiple angles.

[0029] Furthermore, referring to Figure 2 , a protective cover detection sensor 121 can be arranged on one side of the top of the above-mentioned tank 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-stop signals to other equipment to ensure safety. For example, when it is detected that the protective cover 12 is opened, the control drive mechanism assembly is stopped to avoid injury to the operator or damage to the equipment.

[0030] In the embodiment of the present application, the above-mentioned synchronizer ring clamping module 6 includes a connection 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 fork 0. The rotary drive mechanism 2 axially passes through one side of the tank body 11 and can drive the synchronizer ring clamping module 6 to rotate, thereby driving the synchronizer ring 01 to rotate. The fork 0 is sleeved on the synchronizer ring 01, thereby driving the fork 0 to rotate at a specified speed.

[0031] It should be noted that the connection end of the above-mentioned synchronizer ring clamping module 6 is detachably connected to the rotary drive mechanism 2, enabling disassembly and assembly with the rotary drive mechanism 2, facilitating the replacement of the fork 0 and the fork clamping module 5 without causing obstruction. The clamping end of the above-mentioned synchronizer ring clamping module 6 is used to clamp the synchronizer ring 01. By using the clamping method, the synchronizer ring 01 can be disassembled and replaced, facilitating the replacement of the synchronizer ring 01 adapted to the fork 0.

[0032] In the embodiment of the present application, referring toFigures 2 - 5 , the above-mentioned fork clamping module 5 includes a mounting plate 51 detachably arranged on the side wall of the groove body 11, a clamping member 52 slidably arranged on the mounting plate 51. The clamping member 52 is used to clamp both ends of the fork 0. By adopting the clamping method, it is convenient to disassemble and replace the fork 0. The axial driving mechanism 3 passes through the groove body 11 through the transmission mechanism 4. One end of the clamping member 52 is detachably connected to the transmission mechanism 4, so as to drive the clamping member 52 to drive the fork 0 to move axially synchronously, realize the gear shifting of the fork 0, and axially load the fork 0 to simulate the working conditions of the gearbox, cooperate with the rotation of the synchronizer ring 01, and realize the wear resistance test of the fork 0. And the detachable connection method enables the clamping member 52 to be separated from the transmission mechanism 4, which is convenient for disassembly and assembly. The detachable mounting plate 51 and the clamping member 52 enable the fork clamping module 5 to be disassembled and assembled as a whole. It also includes two positioning blocks 53 that can be horizontally adjusted and locked to the mounting plate 51 for movably passing through the fork 0 shaft. The two positioning blocks 53 can play a role in positioning and guiding the axial movement of the fork 0, and the adjustable positioning blocks 53 can be suitable for forks 0 of different models and are convenient for replacing the fork 0.

[0033] It should be noted that for forks 0 of different models in the same vehicle series, only the fork 0 and the synchronizer ring 01 adapted to it need to be replaced. However, for forks 0 of different vehicle series and different models, there are significant differences in structure and size. Therefore, through the fork clamping module 5 that can be disassembled and assembled as a whole, different fork clamping module 5 toolings can be replaced, and then forks 0 of different models can be clamped. Through the above design, the present application can be applicable to the testing of more models of forks 0, and has a wide application range.

[0034] In addition, as Figure 3 , the above-mentioned transmission mechanism 4 is provided with a force sensor 41, and the force sensor 41 is used to monitor the loading force, which is convenient for controlling the magnitude and loading time of the loading force of the fork 0.

[0035] Specifically, the specified loading force value and loading time can be set according to the test condition form, and the axial driving mechanism 3 is started to start the wear resistance test of the fork feet. Test cycle (taking the 1 / 3 gear as an example): After the axial driving mechanism 3 is turned on, the fork 0 is pushed from the middle position towards the 1st gear direction. The reading of the force sensor 41 increases from zero to 600N and then maintains a force of 600N for 0.7s. Then the axial driving mechanism 3 unloads, the reading of the force sensor 41 returns to zero, and then the fork 0 is pushed in the reverse direction towards the 3rd gear direction. The reading of the force sensor 41 increases from zero to 600N and then maintains a force of 600N for 0.4s. Then the axial driving mechanism 3 unloads, and the reading of the force sensor 41 returns to zero; the above is a complete test cycle. The test should complete the specified number of cycles in the test condition form; during the test, the experimental object should be observed and its state recorded every four hours, mainly observing the weld state, whether the bearing is loose, whether the lubrication is sufficient, and whether the fork foot wear is normal, etc.

[0036] As an example, the above-mentioned rotation drive mechanism 2 includes a pneumatic servo motor 21 and a servo control module 22. The main shaft of the pneumatic servo motor 21 passes through the side wall of the groove body 11 and is sealed with the side wall of the groove body 11 through a flange and a sealing ring. A clamping structure is arranged at the driving end of the main shaft for clamping the synchronous ring clamping module 6; it should be noted that this clamping structure can adopt the clamping structure or tensioning structure between the machine tool tool and the rotating shaft in the prior art, etc., to realize the clamping and loosening of the tool. In this embodiment, it is preferably to adopt the automatic tool change structure on the machine tool, which is controlled by a pull and unload tool cylinder. When changing the tool, click the tool change button to control the pull and unload tool cylinder to realize tool change. Applied in this embodiment, it can realize the quick disassembly and assembly of the synchronous ring clamping module 6.

[0037] Such as Figure 4 , the above-mentioned servo control module 22 is connected to the pneumatic servo motor 21 for controlling the pneumatic servo motor 21 to drive the synchronous ring 01 to rotate at a high speed and stably. The above-mentioned servo control module 22 adopts a module assembly in the prior art, and specifically may include: an air intake origin processing part 221, an air storage tank 222, a manual air cut-off main valve 223, a main shaft center blowing decompression 224, a main shaft air curtain pressure reducing valve 225, a main shaft air filter 226, an electric spindle control valve group 227, and a pneumatic pressure detection sensor 228. Through the above modules, the pneumatic control of the pneumatic servo motor 21 is realized, and a stable high rotation speed is achieved.

[0038] As an example, such as Figure 5 , the clamping end of the above-mentioned synchronous ring clamping module 6 includes a stepped collar 61 and a clamping disc 62. The clamping disc 62 is connected to the stepped collar 61 through a locking screw and cooperates with the stepped collar 61 to form an annular groove for the synchronous ring 01 to be sleeved; thus, when disassembling and assembling the synchronous ring 01, first fix the stepped collar 61 with a special tool such as a wrench, then loosen the locking screw, remove the clamping disc 62, and the synchronous ring 01 can be disassembled. The installation is carried out in the reverse order.

[0039] The above-mentioned connection end includes a transmission shaft 63. The transmission shaft 63 is integrally connected to one end of the stepped collar 61 away from the clamping disc 62. The transmission shaft 63 is detachably connected to the clamping structure, that is, the above-mentioned clamping structure is adopted to realize the clamping or loosening of the transmission shaft 63 at the end of the stepped collar.

[0040] Specifically, the part of the above-mentioned transmission shaft 63 close to the stepped collar 61 is constructed in a shape adapted to a special wrench, which is convenient for the wrench to clamp. When disassembling and assembling the synchronous ring 01, after fixing the transmission shaft 63, loosen the locking screw. When the whole synchronous ring clamping module 6 needs to be disassembled, click the tool change button, and the transmission shaft 63 can be taken out from the main shaft hole. When installing, directly insert the transmission shaft 63 into the main shaft hole, and then click the tool change button to realize clamping and fixing.

[0041] As an example, referring to Figure 3 , the above-mentioned axial drive mechanism 3 includes a double-acting cylinder 31 and a pneumatic control module 32. The pneumatic control module 32 is connected to the double-acting cylinder 31 and is used to control the axial loading force exerted by the double-acting cylinder 31 on the fork 0. By using the double-acting cylinder 31, when testing the fork 0, equal output forces can be achieved at both ends, and fine adjustment can be performed through the pneumatic control module 32 to ensure that the forces for the forward and reverse movement of the fork 0 are the same, thereby improving the test effect. The above-mentioned pneumatic control module 32 is composed of modules in the prior art and specifically may include: a cylinder air cut-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. Through the above modules, high-efficiency response of the cylinder can be achieved, and when replacing forks 0 of different models, after releasing the air through the exhaust valve, the cylinder can be manually pushed, which is convenient for replacing forks 0 of different models. It constitutes the pneumatic control unit of the system together with the servo control module 22, as Figure 6 , which is the pneumatic control schematic diagram of a specific embodiment of this application.

[0042] As an example, the above-mentioned 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 and are respectively connected to both ends of the force sensor 41; one of the force transmission shafts 42 is connected to the 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 passes through the side wall of the groove body 11 and is hinged to the connecting rod 44 through a hinge pin; the connecting rod 44 is inserted and locked at one end of the clamping member 52. Through the above structure, the loading force of the double-acting cylinder 31 can be transmitted to the clamping member 52, and then to the fork 0, and the loading force is detected by the force sensor 41. The above-mentioned connecting rod 44 and the connecting shaft 43 are hinged through a hinge pin, and when replacing forks 0 of different models, the hinge pin can be disassembled, which is convenient for replacement.

[0043] Specifically, when replacing forks 0 of different models, 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, and then clamp the fork 0 of different models 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 achieved by using any locking member in the prior art, such as a spring retaining ring, a locking nut plus a washer, and the other end is hinged to the connecting shaft 43. That is, the length of the connecting rod 44 can be adjusted by the hinge pin connection method, and then forks 0 of different models can be clamped.

[0044] As an example, through holes for the connecting shaft 43 to movably pass through are formed in the side wall of the above-mentioned slot body 11, and a telescopic sealing cover 45 is arranged outside the through holes. The telescopic sealing cover 45 is conical, with the end having a larger diameter sealed outside the through hole, and the end having a smaller diameter connected to the adjacent force transmission shaft 42. The dynamic sealing of the through hole can be realized through the telescopic sealing cover 45 without affecting the axial movement of the transmission mechanism 4.

[0045] As an example, a plurality of mounting holes are horizontally formed in the above-mentioned mounting plate 51. The plurality of mounting holes are divided into two groups, corresponding to the two positioning blocks 53 respectively; the positioning blocks 53 are L-shaped, including a horizontal adjustment portion. A kidney-shaped hole is formed in the horizontal adjustment portion and is fixed in cooperation with the mounting hole through a locking screw. In this way, the position of the positioning block 53 can be horizontally adjusted, so that the distance between the two positioning blocks 53 is adjustable, and it is convenient to disassemble the fork 0. The positioning block 53 further includes a vertical positioning portion, which is provided with a shaft hole, and a shaft sleeve is arranged in the shaft hole; a clearance fit is formed between the fork 0 shaft and the shaft sleeve. When the double-acting cylinder 31 drives the clamping member 52 to drive the fork 0 to move axially, relative movement occurs between the fork 0 and the positioning block 53.

[0046] As an example, as Figure 5 , the above-mentioned clamping member 52 is U-shaped and is arranged below the horizontal adjustment portion, including a sliding portion 521 and a clamping portion 522. The sliding portion 521 is slidably arranged on the slide rail provided on the mounting plate 51, and one end of the sliding portion 521 is tightly connected to the connecting rod 44; that is, a slide rail is provided on the mounting plate 51, and the sliding portion 521 can be slidably connected to the slide rail through a slider, which can play a guiding and limiting role in the movement of the sliding portion 521. The clamping portions 522 are arranged at both ends of the sliding portion 521 and are used for clamping both ends of the fork 0; a locking block 524 is arranged on one of the clamping portions 522, and the other clamping portion 522 is adjustably penetrated with a locking pressure rod 523 and fixed through a locking member. The above-mentioned locking member can be any locking structure such as a circlip, a locking nut plus a washer, etc. The above-mentioned locking block 524 and the 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 penetrated in the clamping portion 522, so that the distance between the locking pressure rod 523 and the locking block 524 is adjustable, and thus the fork 0 can be clamped or loosened, which is convenient for fixing the fork 0, and for disassembling the fork 0 and clamping forks 0 of different models.

[0047] Furthermore, as Figure 5 , the above-mentioned mounting plate 51 is horizontally provided with a scale 511, and the scale 511 is located above the two positioning blocks 53. The scale 511 is used to adjust and fix the position of the positioning block 53. For forks 0 of different models, the distance between the two positioning blocks 53 is different, and it can be adjusted according to the size of the fork 0 through the scale 511.

[0048] Specifically, when it is necessary to disassemble the fork 0, loosen the locking lever 523 and withdraw it to the right. Then loosen the locking screws of the two positioning blocks 53, move the right positioning block 53 out of the fork 0 shaft. At this time, move the fork 0 and take it out. When replacing the fork 0 of the same model, just install it in reverse order, and fix the left and right positioning blocks 53 according to the original scale. When tightening the locking lever 523 at the right end, ensure that the synchronizer ring clamping module 6 drives the synchronizer ring 01 to rotate smoothly, and the main shaft can be debugged by hand rotation. When it is necessary to replace the fork 0 of a different model, remove the snap ring on the hinge pin on the left side of the connecting rod 44, then take out the hinge pin, loosen the left connecting rod 44 and screw it into the hole of the clamping part 52 more to the right. Install the fork 0 according to the steps of replacing the fork 0 of the same model and tighten it; then adjust the extended dimension 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 moving the connecting rod 44 left and right, it is necessary to cut off the air intake of the double-acting cylinder 31 first, and then the cylinder can be pushed by hand after exhausting several times. At the same time, observe that the lengths of the two ends of the shaft of the double-acting cylinder 31 extending out should be basically equal to ensure the same stroke of the left and right movements. After completion, install the snap ring on the hinge pin, otherwise readjust.

[0049] As an example, such as Figure 3 and Figure 5 On the side wall of the above-mentioned tank body 11, there is a notch, and a fixing plate 111 is arranged at the notch, and the fixing plate 111 and the edge of the notch are sealed by a sealing strip; the four corners of the mounting plate 51 are connected to the inner side of the fixing plate 111 through locking screws and ball lock shafts 112, and an upper sealing strip 512 that abuts against the protective cover 12 is arranged on the top of the mounting plate 51, and a rubber strip pressing plate 513 for pressing the mounting plate 51 is arranged at the bottom of the mounting plate 51. By opening a slot on the side wall of the tank body 11 to arrange the fixing plate 111 for installing and fixing the mounting plate 51, the mounting plate 51 can be set to a certain thickness to make it have a certain strength, which is convenient for fixing the mounting plate 51. And by using a plurality of sealing strips 512 and rubber strip pressing plates 513, the sealing performance at the notch can be improved. It can solve the problem of insufficient rigidity of the oil tank and avoid the difficulty of later sealing and maintenance caused by making the oil tank larger.

[0050] As an example, such as Figure 2 and Figure 3, it further includes an oil circulation component 7. The oil circulation component 7 includes a circulation pipe 71. Both ends of the circulation pipe 71 are respectively arranged inside the tank body 11. One end of the circulation pipe 71 is connected with a plurality of nozzles 72, and the other end is connected with an oil heater 73. The lubricating oil is heated to a suitable temperature by the oil heater 73, that is, under the temperature working condition of the gearbox (generally 80 °C). An oil pump 74 is arranged outside the tank body 11 and is connected to the middle section of the circulation pipe 71 extending outside the tank body 11. The lubricating oil in the tank body 11 is circulated by the oil pump 74 and sprayed from the plurality of nozzles 72 onto the synchronizer ring 01 and the shift fork 0, simulating the lubricating oil working condition of the gearbox, so as to more efficiently and accurately perform the test on the shift fork 0. A pressure switch 75 is arranged outside the tank body 11 and is connected with the circulation pipe 71, used to monitor the output pressure of the oil pump 74 and protect the oil pump 74 and the pipeline through an automatic on-off circuit to ensure stable pressure.

[0051] Furthermore, a liquid level detection switch 76 and a tubular liquid level indicator 77 are also arranged on the side wall of the above-mentioned tank body 11. The liquid level detection switch 76 can trigger a switch signal at a set liquid level, used for alarming or starting and stopping the oil pump 74, injecting or discharging liquid. The tubular liquid level indicator 77 can directly display the liquid level height through a transparent tube and supports manual reading. A temperature detection sensor is also arranged inside the tank body 11. The temperature sensor is used to detect the temperature of the lubricating oil and can be linked with the oil heater 73 to realize the adjustment of the heating temperature.

[0052] As an example, such as Figure 1 , it further includes an equipment bench 9 and an electrical system bench 8. The tank body 11 is slidably arranged on the equipment bench 9, and its sliding mode can be realized by the cooperation of a chute and a slider, and its position can be fixed through structures such as bolts, so that the position of the oil immersion tank is adjustable. The electrical system bench 8 is provided with an electrical control box 81 and an operation box 82. The electrical control box 81 is respectively electrically connected with the operation box 82 and the driving mechanism component. The electrical control box 81 is responsible for the power distribution, protection, logic control and signal processing of the system. An interactive human-machine screen is arranged on the operation box 82, providing a human-machine interaction interface for manual operation, status monitoring and emergency control. The staff operates the operation of equipment such as the double-acting cylinder 31, the pneumatic servo motor 21, the oil heater 73, and the oil pump 74 on the operation box 82 to realize the periodic test of the shift fork 0.

[0053] Although the preferred embodiments of the embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted to include the preferred embodiments and all changes and modifications falling within the scope of the embodiments of the present invention.

[0054] Finally, it should also be noted that in this text, relational terms such as first and second are only used 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 term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or terminal device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising the said element.

[0055] The above provides a detailed introduction to a shift fork test system provided by the present invention. Specific examples are used in this text to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A fork test system, characterized in that, Comprising: An oil immersion tank assembly, including a tank body for containing lubricating oil and a protective cover detachably arranged 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 arranged outside the tank body and axially passing through the same side of the tank body through a transmission mechanism; wherein, a force sensor is arranged on the transmission mechanism; A fork clamping module, including: A mounting plate detachably arranged on the side wall of the tank body; A clamping member slidably arranged on the mounting plate for clamping the fork; one end of the clamping member is detachably connected to the transmission mechanism; Two positioning blocks horizontally adjustable and lockable on the mounting plate for movably passing through the fork shaft; A synchronizing ring clamping module, including: A connection end detachably connected to the rotary drive mechanism and a clamping end for clamping and fixing the synchronizing ring; wherein, the synchronizing ring is adapted to the fork.

2. The fork test system according to claim 1, characterized in that, The rotary drive mechanism includes a pneumatic servo motor and a servo control module, The main shaft of the pneumatic servo motor passes through the side wall of the tank body; and a clamping structure is arranged at the driving end of the main shaft for clamping the synchronizing ring clamping module; The servo control module is connected to the pneumatic servo motor for controlling the pneumatic servo motor to drive the synchronizing ring to rotate at high speed and stably.

3. The fork test system according to claim 2, wherein, The clamping end includes a stepped collar and a clamping disc, 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 synchronizing ring to be sleeved; The connection end includes a transmission shaft, the transmission shaft is integrally connected to one end of the stepped collar away from the clamping disc, and the transmission shaft is detachably connected to the clamping structure.

4. The fork test system according to claim 1, wherein The axial drive mechanism includes a double-acting cylinder and a pneumatic control module, the pneumatic control module is connected to the double-acting cylinder for controlling the axial loading force of the double-acting cylinder acting on the fork.

5. The fork test system according to claim 4, wherein The transmission mechanism includes a force transmission shaft, a connecting shaft and a connecting rod, Two force transmission shafts are arranged, respectively connected to both ends of the force sensor; one of the force transmission shafts is connected to the 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 passes through the side wall of the tank body and is hinged to the connecting rod; The connecting rod is inserted and locked at one end of the clamping member.

6. The fork test system according to claim 5, wherein A through hole for the connecting shaft to movably pass through is opened on the side wall of the tank body, and a telescopic sealing cover is arranged outside the through hole.

7. The fork testing system according to claim 5, wherein A plurality of mounting holes are horizontally opened on the mounting plate; The positioning block is L-shaped and includes: A horizontal adjustment part, provided with a kidney-shaped hole and fixed by a locking screw in cooperation with the mounting hole; A vertical positioning part, provided with a shaft hole, and a bush is arranged in the shaft hole; The fork shaft forms a clearance fit with the bush.

8. The fork test system according to claim 7, characterized in that The clamping member is U-shaped and arranged below the horizontal adjustment part, and includes: A sliding part, the sliding part is slidably arranged on the slide rail arranged on the mounting plate, and one end of the sliding part is locked and connected to the connecting rod; A clamping part, arranged at both ends of the sliding part for clamping both ends of the fork; a locking block is arranged on one of the clamping parts, and a locking pressure rod is adjustably arranged through the other clamping part and fixed by a locking member.

9. The fork test system according to claim 1, characterized in that, The side wall of the tank body is provided with a notch, and a fixing plate is arranged 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 through locking screws and ball lock shafts, and an upper sealing strip abutted against the protective cover is arranged at the top of the mounting plate, and a rubber strip pressing plate for pressing the mounting plate is arranged at the bottom of the mounting plate.

10. The fork test system according to claim 1, characterized in that, The mounting plate is horizontally provided with a scale, and the scale is located above the two positioning blocks.

11. The fork test system according to any one of claims 1-10, characterized in that, It further includes an oil liquid circulation assembly, and the oil liquid circulation assembly includes: A circulation pipe, both ends of the circulation pipe are respectively arranged inside the tank body, one end of which is connected with a plurality of nozzles, and the other end is connected with an oil liquid heater; An oil pump, arranged outside the tank body and connected to the middle section of the circulation pipe extending outside the tank body; A pressure switch, arranged outside the tank body and connected to the circulation pipe.

12. The fork test system according to claim 11, wherein, The side wall of the tank body is further provided with a liquid level detection switch and a tubular liquid level indicator; a temperature detection sensor is further arranged inside the tank body.

13. The fork test system according to claim 1, characterized in that, It further includes an equipment bench and an electrical system bench, the tank body is slidably arranged on the equipment bench; the electrical system bench is provided with an electric control box and an operation box, and the electric control box is electrically connected to the operation box and the drive mechanism assembly respectively.

14. The fork test system according to claim 1, characterized in that, The top and one side of the tank body are open; the protective cover is L-shaped and hermetically covers the opening of the tank body in a fitting manner.

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