Split type control tool for transmission

Abstract

The utility model relates to a control device of a speed changer, in particular to a split type control tool for the speed changer, which aims to overcome the defects that a gear shifting mechanism is complicated in structure and is not suitable for being used in production and test of the speed changer in the prior art, and comprises a front end assembly and a rear end assembly, the front end assembly comprises a first gear selecting and shifting shaft, a gear selecting and shifting block and a connecting end cover. A first through hole is formed in the connecting end cover along the central axis, and the first gear selecting and shifting shaft penetrates through the first through hole and moves along the central axis of the first through hole or rotates around the central axis; the rear end assembly comprises a supporting base, a second gear selecting and shifting shaft, a connecting structure and a gear selecting and shifting positioning structure, the connecting structure is arranged at one end of the second gear selecting and shifting shaft and detachably connected with the other end of the first gear selecting and shifting shaft, and coaxial rotation of the second gear selecting and shifting shaft and the first gear selecting and shifting shaft is achieved.

Description

Technical Field

[0001] The utility model relates to a control device of a transmission, in particular to a split-type operating tool for a transmission. Background Art

[0002] After the mechanical body of an automatic transmission is produced, relevant performance tests are usually carried out. During the test process, it is necessary to operate the mechanical body. If the operating device product of the corresponding transmission is directly connected and used for operation, there are disadvantages such as high cost, complex operation, difficult protection, airtight failure of the transmission mechanical body, and difficult leakage point detection after the airtight failure.

[0003] The Chinese patent with the publication number CN107420537A discloses a gear shifting and selecting mechanism of a gearbox with an internal shift booster, which includes a shift shaft and a shift lever head. A spacer sleeve is sleeved outside the shift shaft, the shift lever head is sleeved outside the spacer sleeve, and the end of the spacer sleeve is connected to the swing arm of the shift booster. The shift booster is realized to be internal and the gear selection stroke is limited by the spacer sleeve. The Chinese patent with the publication number CN110735920A discloses a gear shifting and selecting operating device of a transmission driven by a single motor, which includes a gear shifting and selecting shaft, a driving motor, a planetary gear reduction device and a limit detection device. The single-motor structure and the planetary gear mechanism are adopted to realize the two functions of gear selection and gear shifting with a single power input, and the overall structure is compact and the cost is low. Generally speaking, the existing shift mechanisms are usually applied in the actual use process of products, with complex structures and not suitable for use in production and testing. Therefore, it is necessary to develop an operating device that can be quickly loaded and unloaded for application in the production and testing processes of transmissions. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies in the prior art that the shift mechanism has a complex structure and is not suitable for use in the production and testing of transmissions, and to provide a split-type operating tool for a transmission.

[0005] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0006] A split-type control tool for a transmission, characterized in that: it includes a front-end component and a rear-end component; the front-end component includes a first shift-select shaft, a shift-select knob, and a connection end cover; the shift-select knob is arranged at one end of the first shift-select shaft; one end of the connection end cover close to the shift-select knob is used for sealing connection with the transmission, and the connection end cover is provided with a first through hole along the central axis. The other end of the first shift-select shaft passes through the first through hole and can move or rotate along the central axis of the first through hole, driving the shift-select knob to complete the shift-select and shifting actions; the rear-end component includes a support seat, a second shift-select shaft, a connection structure, and a shift-select positioning structure; the connection structure is arranged at one end of the second shift-select shaft and is detachably connected to the other end of the first shift-select shaft, enabling the second shift-select shaft to rotate coaxially with the first shift-select shaft; the support seat is provided with a receiving cavity along the central axis, and the second shift-select shaft is arranged in the receiving cavity and can move or rotate along its central axis. One end of the support seat is detachably connected to the other end of the connection end cover; the shift-select positioning structure is arranged corresponding to the second shift-select shaft and is used to indicate the shift-select position when the second shift-select shaft moves or rotates.

[0007] Further, the rear-end component further includes a connection seat. One end of the connection seat is connected to the support seat, and the other end is used for detachably connecting to the other end of the connection end cover;

[0008] Two planar structures are oppositely arranged on the outer side wall of the other end of the connection end cover. A through groove is arranged along the circumferential direction on the outer side wall between the two planar structures. A matching clamping interface is arranged at the other end of the connection seat, and the two are connected by clamping.

[0009] Further, the connection structure includes a connection gasket and a transition gasket. The connection gasket and the transition gasket are sequentially connected to the end of one end of the second shift-select shaft, and the transition gasket is located between the connection gasket and the second shift-select shaft;

[0010] Installation notches are arranged on the connection gasket and the transition gasket. Two rectangular grooves are oppositely arranged on the outer side wall of the other end of the first shift-select shaft corresponding to the installation notches, so that the first shift-select shaft is assembled into the connection gasket and the transition gasket through the installation notches. The inner circumference of the connection gasket matches the two rectangular grooves to achieve clamping connection.

[0011] Further, the first through hole includes a large-diameter end and a small-diameter end. An oil seal is arranged at a position close to the shift-select knob between the side wall of the small-diameter end and the outer side wall of the first shift-select shaft, and a first straight-column type oil-free bushing is arranged at a position close to the large-diameter end;

[0012] A second through hole is opened along the radial direction of the first shift-select shaft on the side wall of the large-diameter end of the first through hole. A positioning pin is arranged in the second through hole. A positioning groove is arranged on the outer side wall of the first shift-select shaft corresponding to the second through hole. The inner end of the positioning pin cooperates with the positioning groove to achieve the axial limit of the first shift-select shaft;

[0013] The other end of the first shift shaft is provided with a large-diameter end, and its outer diameter matches the diameter of the large-diameter end of the first through hole.

[0014] Furthermore, the shift positioning structure includes a first pin and a second pin, and a first limiting groove and a second limiting groove provided on the outer side wall of the second shift shaft;

[0015] The support seat is provided with a third through hole and a fourth through hole opposite to each other in the radial direction, and the first pin and the second pin are respectively arranged in the third through hole and the fourth through hole;

[0016] The first limiting groove is arranged corresponding to the third through hole and includes a plurality of arc grooves continuously arranged along the axial direction. The inner end of the first pin is provided with a telescopic spherical structure for cooperating with the arc grooves to realize the selection and indication of different gears;

[0017] The second limiting groove is arranged as an arc groove, corresponding to the fourth through hole. The structure of the inner end of the second pin is the same as that of the first pin and is used to match the arc groove;

[0018] The length of the arc groove along the axial direction is the same as the total length of the plurality of continuously arranged arc grooves, and the width along the circumferential direction of the second shift shaft is smaller than that of the arc groove.

[0019] Furthermore, the accommodation cavity includes a first chamber and a second chamber arranged in sequence along the central axis. The first chamber is located at one end close to the connecting seat. One end of the second shift shaft is provided with a large-diameter end, and the diameter of the first chamber matches the diameter of the large-diameter end of the second shift shaft;

[0020] The diameter of the second chamber matches the outer diameter of the second shift shaft; a thrust-type oil-free bushing is arranged at a position close to the first chamber between the second shift shaft and the side wall of the second chamber; the third through hole and the fourth through hole are arranged on the outer side wall of the second chamber.

[0021] Furthermore, the rear end assembly further includes a spring sleeved on the other end of the second shift shaft, and spring seats are arranged at both ends of the spring;

[0022] The accommodation cavity further includes a third chamber arranged at one end of the second chamber away from the first chamber. The spring and the spring seats are arranged in the third chamber, and positioning bosses are arranged on the side wall of the third chamber corresponding to both ends of the spring seats;

[0023] First limiting bosses and second limiting bosses are respectively arranged on both ends of the second shift shaft corresponding to the spring seats for compressing the spring when the second shift shaft moves.

[0024] The spring is arranged in the third chamber.

[0025] Further, the front-end component further includes a shift lever interlock block corresponding to the shift lever.

[0026] Further, it further includes a shift lever, and the shift lever is detachably connected to the other end of the second shift shaft.

[0027] Further, the other end of the second shift shaft is connected to the support seat through a bearing seat, and a second straight cylindrical oil-free bushing is provided between the bearing seat and the second shift shaft;

[0028] The bearing seat and the thrust-type oil-free bushing are respectively connected to the support seat by screws.

[0029] Advantages of the present utility model:

[0030] 1. The present utility model includes a front-end component and a rear-end component, which are detachably connected. During the production process, only the front-end component can be connected to seal the transmission, and then cleaned and painted, effectively reducing the sealing elements and improving the sealing reliability. The rear-end component is installed during the testing stage. The usage method is flexible. When the production volume increases, only the front-end component needs to be manufactured, saving more than 40% of the cost.

[0031] 2. The present utility model adopts a split structure. When flowing in non-test processes, removing the rear-end component reduces the width of the transmission, saves space, and reduces the weight of each part after splitting, reducing the labor intensity.

[0032] 3. The present utility model sets a connection seat, a connection gasket and a transition gasket in the rear-end component, which are respectively connected to the connection end cover and the first shift shaft of the front-end component by a snap connection method, facilitating quick installation and improving production efficiency.

[0033] 4. The shift positioning structure set in the present utility model realizes the selection and indication of different gears through cooperation.

[0034] 5. A spring is set in the present utility model. During the process of gear selection and shifting, after the spring is compressed, it can provide power for the movement of the second shift shaft, making the testing process more labor-saving. Description of the Drawings

[0035] Figure 1 is a three-dimensional structural schematic diagram of an embodiment of the present utility model (the shift lever is not shown);

[0036] Figure 2 is a structural schematic diagram of the front-end component in an embodiment of the present utility model;

[0037] Figure 3 is a structural schematic diagram of the rear-end component in an embodiment of the present utility model;

[0038] Figure 4It is a schematic structural diagram of the connection state between the first shift selection shaft and the second shift selection shaft in an embodiment of the present utility model;

[0039] Figure 5 It is a schematic structural diagram of the connection end cover in an embodiment of the present utility model;

[0040] Figure 6 It is a schematic structural diagram of the connection seat in an embodiment of the present utility model;

[0041] Figure 7 It is a schematic structural diagram of the docking state between the connection end cover and the connection seat in an embodiment of the present utility model;

[0042] Figure 8 It is a schematic three-dimensional structural diagram of an embodiment of the present utility model;

[0043] Figure 9 It is a schematic structural diagram of a non-neutral gear state in an embodiment of the present utility model;

[0044] Figure 10 It is a schematic structural diagram of a neutral gear state in an embodiment of the present utility model.

[0045] Explanation of reference numerals:

[0046] 1 - Front-end assembly, 11 - Shift selection knob, 12 - Knob interlock block, 13 - First shift selection shaft, 14 - Connection end cover, 15 - First straight cylindrical oil-free bushing, 16 - Positioning pin, 17 - Oil seal, 18 - Positioning groove;

[0047] 2 - Rear-end assembly, 21 - Connection seat, 22 - Connection gasket, 23 - Transition gasket, 24 - Support seat, 25 - Spring seat, 26 - Bearing seat, 27 - Second shift selection shaft, 28 - Second straight cylindrical oil-free bushing, 29 - Socket head cap screw, 210 - Shaft circlip, 211 - Spring, 212 - First dowel pin, 213 - Second dowel pin, 214 - Hexagon flange head bolt, 215 - Thrust-type oil-free bushing, 216 - First limit groove, 217 - Second limit groove;

[0048] 3 - Shift lever. Detailed implementation manners

[0049] A split-type control tooling for a transmission of the present utility model, as Figure 1 and Figure 8 shown, includes a front-end assembly 1, a rear-end assembly 2, and a shift lever 3. The front-end assembly 1 is used to seal the transmission during cleaning, painting, and airtight testing for protection. The rear-end assembly 2 is used for positioning the shift selection position. The two are docked for shift selection during testing and can be quickly loaded and unloaded.

[0050] The front-end assembly 1 is as Figure 2As shown in the figure, it includes a first shift shaft 13, a shift selector 11, and a connecting end cover 14; the shift selector 11 is arranged at one end of the first shift shaft 13. An O-ring is arranged on the outer periphery of one end of the connecting end cover 14 close to the shift selector 11 for sealing connection with the transmission. The outer surface of one end thereof can be set according to the structure of the transmission housing, and corresponding screw connection holes are provided; a first through hole is arranged along the central axis of the connecting end cover 14, and the other end of the first shift shaft 13 passes through the first through hole. The first shift shaft 13 can move along the central axis of the first through hole or rotate around its central axis to drive the shift selector 11 to complete the gear selection and shifting actions.

[0051] The first through hole includes a large-diameter end and a small-diameter end. To improve the sealing performance of the front-end assembly 1 and the flexibility of the first shift shaft 13, an oil seal 17 is arranged at a position close to the shift selector 11 between the side wall of the small-diameter end and the outer side wall of the first shift shaft 13, and a first straight-column type oil-free bushing 15 is arranged at a position close to the large-diameter end; a second through hole is opened in the side wall of the large-diameter end of the first through hole along the radial direction of the first shift shaft 13, a positioning pin 16 is arranged in the second through hole, and a positioning groove 18 is arranged on the outer side wall of the first shift shaft 13 corresponding to the second through hole. The inner end of the positioning pin 16 cooperates with the positioning groove 18. In this embodiment, the positioning pin 16 adopts a self-locking indexing pin. When its indexing head extends, it cooperates with the positioning groove 18 on the first shift shaft 13 to realize the axial limiting function of the first shift shaft 13 and prevent the first shift shaft 13 from sliding during the transportation of the transmission; a large-diameter end is arranged at the other end of the first shift shaft 13, and its outer diameter matches the diameter of the large-diameter end of the first through hole.

[0052] The rear-end assembly 2 is as Figure 3 shown, and includes a connecting structure, a second shift shaft 27, a support seat 24, a connecting seat 21, and a shift selection and positioning structure. The connecting structure includes a connecting gasket 22 and a transition gasket 23. The connecting gasket 22 and the transition gasket 23 are sequentially connected to one end of the second shift shaft 27 through an inner hexagon socket head cap screw 29. The transition gasket 23 is located between the connecting gasket 22 and the second shift shaft 27. Installation notches are provided on the connecting gasket 22 and the transition gasket 23. Two rectangular grooves are oppositely arranged on the outer side wall of the other end of the first shift shaft 13 corresponding to the installation notches, as Figure 4 shown, which facilitates the assembly of the other end of the first shift shaft 13 into the connecting gasket 22 and the transition gasket 23 through the installation notches. The inner circumference of the connecting gasket 22 matches the two rectangular grooves to realize snap connection, so that the second shift shaft 27 and the first shift shaft 13 rotate coaxially.

[0053] The support base 24 is provided with a receiving cavity along its central axis. The second shift shaft 27 is arranged in the receiving cavity, and the other end is connected to the support base 24 through a bearing seat 26, and can move along the central axis of the receiving cavity or rotate around the central axis. A second straight cylindrical oil-free bushing 28 is arranged between the bearing seat 26 and the second shift shaft 27, and is connected to the support base 24 through an inner hexagon socket head cap screw 29.

[0054] The receiving cavity includes a first chamber and a second chamber arranged in sequence along the central axis. The first chamber is located at one end close to the connection structure. One end of the second shift shaft 27 is provided with a large-diameter end. The diameter of the first chamber matches the diameter of the large-diameter end of the second shift shaft 27, leaving a translation space for the second shift shaft 27; the diameter of the second chamber matches the outer diameter of the second shift shaft 27. A thrust-type oil-free bushing 215 is arranged at the position where the second shift shaft 27 is close to the first chamber in the second chamber. The thrust-type oil-free bushing 215 is connected to the support base 24 through a socket head cap screw.

[0055] The connection base 21 is arranged at one end of the support base 24 and is connected to the support base 24 through a hexagon flange bolt 214; a through groove is formed in the outer side wall of the other end of the connection end cover 14 in the circumferential direction. The other end of the connection base 21 is provided with a mating card interface, and the two are connected by snap connection. As Figures 5 to 7 shown in the figure, in this embodiment, flat structures are machined on the opposite sides of the outer side wall of the other end of the connection end cover 14. The through groove is located between the two flat structures. An avoidance notch is provided below the connection base 21. The inner side wall of the connection base 21 matches the flat structures on both sides of the connection end cover 14. An avoidance hole is opened on the upper wall of the connection base 21 as the card interface, and the upper wall near the other end is used as the snap block, which matches the through groove of the connection end cover 14. The connection base can be directly sleeved on the other end of the connection end cover 14 from top to bottom, and is limited by the cooperation of the inner side wall to avoid relative rotation. It is defined that the contact surfaces of the avoidance hole with the flat structures on both sides of the connection end cover 14 are the joint surfaces A and B respectively, the contact surfaces of the avoidance hole with the side walls of the through groove are the joint surfaces C and D respectively, the contact surface of the snap block with the bottom surface of the through groove is the joint surface E, and the bottom surface of the through groove is the joint surface F. The joint surfaces A and B limit the relative displacement in the horizontal direction and perpendicular to the axis direction, the joint surfaces C and D limit the relative displacement along the axis direction, and the joint surfaces E and F cooperate to limit the relative displacement in the vertical direction.

[0056] The gear selection and shift positioning structure is arranged corresponding to the second gear selection and shift shaft 27, and is used to prompt the gear selection and shift position when the second gear selection and shift shaft 27 moves or rotates. The gear selection and shifting positioning structure includes a first pin 212 and a second pin 213, and a first limiting groove 216 and a second limiting groove 217 arranged on the outer side wall of the second gear selection and shifting shaft 27; a third through hole and a fourth through hole are arranged radially opposite to each other on the outer side wall of the second chamber of the support seat 24, and the first pin 212 and the second pin 213 are arranged in the third through hole and the fourth through hole respectively; the first limiting groove 216 is arranged corresponding to the third through hole, including a plurality of arc grooves arranged continuously along the axial direction, and a retractable spherical structure is arranged at the inner end of the first pin 212 for cooperating with the arc groove to realize the selection and prompt of different gears; the second limiting groove 217 is arranged as an arc groove, which is arranged corresponding to the fourth through hole, and the structure of the inner end of the second pin 213 is the same as that of the first pin 212, and is used to match the arc groove, and the length of the arc groove along the axial direction is the same as the total length of the plurality of arc grooves arranged continuously, and the width along the circumferential direction of the second gear selection and shifting shaft 27 is smaller than the arc groove.

[0057] like Figure 9 As shown, the second shift selector shaft 27 is rotated so that the inner end of the second pin 213 is offset from the second limit groove 217. At this time, the inner end of the first pin 212 is still matched with the first limit groove 216 and is in a non-neutral state; Figure 10 As shown, when the inner end of the second pin 213 is located in the second limiting groove 217, the neutral position prompt is achieved.

[0058] In order to improve the accuracy of gear selection and shifting, a gear selector head 11 is correspondingly provided with a gear selector head interlocking block 12 , and the gear selector head interlocking block 12 can rotate freely around the first gear selector shaft 13 , so as to prevent multiple gears from being engaged.

[0059] To facilitate gear selection and shifting, the rear end component 2 also includes a spring 211 sleeved on the second gear selection and shifting shaft 27, and the accommodating chamber also includes a third chamber arranged at one end of the second chamber away from the first chamber, and the spring 211 is located in the third chamber; spring seats 25 are arranged at both ends of the spring 211, and the outer diameter of the spring seat 25 matches the inner diameter of the accommodating chamber; the side walls of the third chamber are respectively provided with positioning bosses at both ends corresponding to the spring seats, which are used to limit the setting position of the spring 211. In this embodiment, the bearing seat 2 is located between the side wall of the third chamber and the second gear selection and shifting shaft 27, and serves as a positioning boss to limit the spring seat 25 close to the other end of the second gear selection and shifting shaft 27. The first limiting boss and the second limiting boss are respectively provided at the positions corresponding to the two ends of the spring seat 25 on the second gear selection and shifting shaft 27, so that the spring 211 is compressed when the second gear selection and shifting shaft 27 moves.

[0060] like Figure 3As shown, the second selection and shift shaft 27 is in the middle position and the spring 211 is in an uncompressed state. When adjusting the gear position, the second selection and shift shaft 27 is moved along the central axis, causing the spring 211 to be compressed. When the second selection and shift shaft 27 returns to the middle position, the elastic force of the spring 211 provides a force to assist the movement of the second selection and shift shaft 27. In this embodiment, the second limit boss is set as a shaft retaining ring 210 sleeved on the second selection and shift shaft 27.

[0061] Two rectangular grooves are symmetrically formed at the end of the other end of the second selection and shift shaft 27. One end of the shift lever 3 is provided with a connecting block matching the rectangular groove. Canceling holes are correspondingly arranged at the bottom of the rectangular groove and on the connecting block. The shift lever 3 and the second selection and shift shaft 27 are connected by a dowel pin. As Figure 8 shown, the central axes of the shift lever 3 and the second selection and shift shaft 27 are vertically arranged.

[0062] During use, the front-end assemblies 1 can be respectively installed on multiple transmissions for cleaning and painting simultaneously. The same rear-end assembly 2 can be respectively docked with different front-end assemblies 1 for testing. The usage mode of the present utility model is as follows:

[0063] (1) During the assembly process of the transmission, the front-end assembly 1 is installed on the transmission housing through the connecting end cover 14. After the transmission is assembled, an airtight test is carried out. During the airtight test, the front-end assembly 1 plays a role in sealing the transmission. After the airtight test is qualified, it is transferred to the mechanical body test station.

[0064] (2) At the mechanical body test station, the front-end assembly 1 is docked with the rear-end assembly 2 for testing. After passing the test, the transmission and the front-end assembly 1 are removed and transferred to the subsequent station.

[0065] (3) The transmission with the front-end assembly 1 is subjected to total assembly cleaning, painting, and drying. During this process, the front-end assembly 1 has the function of preventing water and paint from entering the transmission.

[0066] As mentioned above, the above is only the specific implementation mode of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various equivalent modifications or replacements, and these modifications or replacements should be covered within the protection scope of the present utility model.

Claims

1. A split-type control tool for a transmission, characterized in that: It includes a front-end component (1) and a rear-end component (2); The front-end component (1) includes a first shift-select shaft (13), a shift-select head (11), and a connecting end cover (14); The shift-select head (11) is arranged at one end of the first shift-select shaft (13); One end of the connecting end cover (14) close to the shift-select head (11) is used for sealed connection with the transmission. The connecting end cover (14) is provided with a first through hole along the central axis. The other end of the first shift-select shaft (13) passes through the first through hole and can move or rotate along the central axis of the first through hole, driving the shift-select head (11) to complete the shift selection and shifting actions; The rear-end component (2) includes a support seat (24), a second shift-select shaft (27), a connection structure, and a shift-select positioning structure; The connection structure is arranged at one end of the second shift-select shaft (27) and is detachably connected to the other end of the first shift-select shaft (13), enabling the second shift-select shaft (27) to rotate coaxially with the first shift-select shaft (13); The support seat (24) is provided with an accommodation cavity along the central axis. The second shift-select shaft (27) is arranged in the accommodation cavity and can move or rotate along its central axis. One end of the support seat (24) is detachably connected to the other end of the connecting end cover (14); The shift-select positioning structure is arranged corresponding to the second shift-select shaft (27) and is used to indicate the shift selection position when the second shift-select shaft (27) moves or rotates.

2. The split-type control tool for a transmission according to claim 1, characterized in that: The rear-end component (2) further includes a connection seat (21). One end of the connection seat (21) is connected to the support seat (24), and the other end is used for detachably connecting to the other end of the connecting end cover (14); Two planar structures are oppositely arranged on the outer side wall of the other end of the connecting end cover (14). A through groove is arranged along the circumferential direction on the outer side wall between the two planar structures. A clamping interface matching it is arranged at the other end of the connection seat (21), and the two are connected by clamping.

3. The split-type control tool for a transmission according to claim 2, characterized in that: The connection structure includes a connection gasket (22) and a transition gasket (23). The connection gasket (22) and the transition gasket (23) are sequentially connected to the end of one end of the second shift-select shaft (27). The transition gasket (23) is located between the connection gasket (22) and the second shift-select shaft (27); Installation notches are arranged on the connection gasket (22) and the transition gasket (23). Two rectangular grooves are oppositely arranged on the outer side wall of the other end of the first shift-select shaft (13) corresponding to the installation notches, so that the first shift-select shaft (13) is assembled into the connection gasket (22) and the transition gasket (23) through the installation notches. The inner circumference of the connection gasket (22) matches the two rectangular grooves to achieve clamping connection.

4. The split-type control tool for a transmission according to claim 3, characterized in that: The first through hole includes a large-diameter end and a small-diameter end. An oil seal (17) is provided at a position close to the shift selector head (11) between the side wall of the small-diameter end and the outer side wall of the first shift selector shaft (13), and a first straight-column type oil-free bushing (15) is provided at a position close to the large-diameter end; A second through hole is formed in the side wall of the large-diameter end of the first through hole along the radial direction of the first shift selector shaft (13). A positioning pin (16) is arranged in the second through hole, and a positioning groove (18) is provided on the outer side wall of the first shift selector shaft (13) corresponding to the second through hole. The inner end of the positioning pin (16) is matched with the positioning groove (18) to realize the axial limit of the first shift selector shaft (13); The other end of the first shift selector shaft (13) is provided with a large-diameter end, and its outer diameter matches the diameter of the large-diameter end of the first through hole.

5. The split-type control tooling for a transmission according to any one of claims 1 to 4, wherein: The shift positioning structure includes a first pin (212) and a second pin (213), and a first limit groove (216) and a second limit groove (217) provided on the outer side wall of the second shift selector shaft (27); The support seat (24) is provided with a third through hole and a fourth through hole oppositely along the radial direction. The first pin (212) and the second pin (213) are respectively arranged in the third through hole and the fourth through hole; The first limit groove (216) corresponds to the third through hole and includes a plurality of arc grooves continuously arranged along the axial direction. The inner end of the first pin (212) is provided with a retractable spherical structure for matching with the arc grooves to realize the selection and prompt of different gears; The second limit groove (217) is arranged as an arc groove and corresponds to the fourth through hole. The structure of the inner end of the second pin (213) is the same as that of the first pin (212) and is used for matching with the arc groove; The length of the arc groove along the axial direction is the same as the total length of the continuously arranged plurality of arc grooves, and the width along the circumferential direction of the second shift selector shaft (27) is smaller than that of the arc groove.

6. The split-type control tooling for a transmission according to claim 5, wherein: The accommodating cavity includes a first chamber and a second chamber arranged in sequence along the central axis. The first chamber is located at one end close to the connecting seat (21). One end of the second shift selector shaft (27) is provided with a large-diameter end, and the diameter of the first chamber matches the diameter of the large-diameter end of the second shift selector shaft (27); The diameter of the second chamber matches the outer diameter of the second shift selector shaft (27); a thrust-type oil-free bushing (215) is provided between the second shift selector shaft (27) and the side wall of the second chamber at a position close to the first chamber; the third through hole and the fourth through hole are arranged on the outer side wall of the second chamber.

7. The split-type control tooling for a transmission according to claim 6, wherein: The rear-end assembly (2) further includes a spring (211) sleeved on the other end of the second shift selector shaft (27), and spring seats (25) are arranged at both ends of the spring (211); The accommodating cavity further includes a third chamber arranged at one end of the second chamber far from the first chamber. The spring (211) and the spring seats are arranged in the third chamber, and positioning bosses are arranged on the side wall of the third chamber corresponding to both ends of the spring seats; A first limiting boss and a second limiting boss are respectively arranged at two ends of the second shift selecting shaft (27) corresponding to the spring seat (25) for compressing the spring (211) when the second shift selecting shaft (27) moves; The spring (211) is arranged in the third chamber.

8. The split type transmission operating tooling according to claim 7, characterized in that: The front end assembly (1) further includes a shift selecting head interlock block (12) arranged corresponding to the shift selecting head (11).

9. The split type transmission operating tooling according to claim 8, characterized in that: It further includes a shift lever (3), and the shift lever (3) is detachably connected to the other end of the second shift selecting shaft (27).

10. The split type transmission operating tooling according to claim 9, characterized in that: The other end of the second shift selecting shaft (27) is connected to the support seat (24) through a bearing seat (26), and a second straight cylindrical oil-free bushing (28) is arranged between the bearing seat (26) and the second shift selecting shaft (27); The bearing seat (26) and the thrust type oil-free bushing (215) are respectively connected to the support seat (24) by screws.

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