Shifting inhaul cable resistance testing device

Abstract

The invention relates to the technical field of inhaul cable performance testing, and discloses a gear shifting inhaul cable resistance testing device which comprises a first positioning seat, a second positioning seat, a proofreading seat, a testing seat and a push-pull mechanism. According to the gear-shifting inhaul cable resistance testing device, the gear-shifting inhaul cable is loaded on the positioning blocks of the first positioning seat, the second positioning seat, the proofreading seat and the testing seat, the gear-shifting inhaul cable can be quickly positioned, the length of the sleeve, the total length of the gear-shifting inhaul cable and the stroke of the gear-shifting inhaul cable can be detected, and the core rope is driven by the push-pull mechanism to move relative to the sleeve. The axial movement condition and the tensile resistance of the gear shifting inhaul cable are tested, so that the detection difficulty is reduced, and the accuracy of a detection result is improved.

Description

Technical Field

[0001] The invention relates to the technical field of cable performance testing, and in particular to a gear shift cable resistance testing device. Background Art

[0002] The shift cable is an important part of the vehicle's gear shifting system. One end of the shift cable is connected to the gearbox in the engine compartment, and the other end is connected to the shifter in the driver's compartment. When the driver operates the shifter in the cab, the shifter will rotate the gearshift lever of the gearbox through the shift cable to the corresponding angle, thereby switching to the corresponding gear position and realizing the gear shifting control of the gearbox.

[0003] The shift cable is usually long. During installation, the cable is supported and limited by two cable limit blocks. The middle section of the cable is between the two cable limit blocks. The sections A and B are between the two cable limit blocks and the adjacent cable joints. The total length of the cable consists of three sections: A, B and the middle section. Since the length of the middle section of the cable is determined after the two cable limit blocks are determined, the length of the A and B sections actually affects the length or use of the cable, and the actual function of the shift cable is also achieved by the expansion and contraction of the A and B sections.

[0004] The inspection items of the shift cable include length inspection, pulling stroke inspection and tensile inspection, especially the measurement of the tensile resistance of the two cable joints. Currently, the measurement is mainly completed by manual operation and a dynamometer, with low inspection efficiency and measurement accuracy. Therefore, it is particularly important to design a testing device that can be applied to this shift cable product. Summary of the invention

[0005] The object of the present invention is to provide a shift cable resistance testing device to solve the problems mentioned in the above background technology, so as to make the performance test of the shift cable simpler and more accurate.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A shift cable resistance test device, the shift cable comprises a sleeve and a core rope inserted in the sleeve, one end of the sleeve is provided with a first pipe cap, the other end of the sleeve is provided with a second pipe cap, one end of the core rope extends out of the first pipe cap and is provided with a first joint, the other end of the core rope extends out of the second pipe cap and is provided with a second joint, an elastic deformation body is connected between the second pipe cap and the second joint, the shift cable resistance test device comprises a first positioning seat, a second positioning seat, a proofreading seat, a test seat and a push-pull mechanism, wherein:

[0008] The first positioning seat is used to fix the first pipe cap, and the second positioning seat is used to fix the second pipe cap. The distance between the first positioning seat and the second positioning seat is adjustable so that the sleeve remains in a straight state;

[0009] The calibration seat is arranged on the first positioning seat and is away from the side of the second positioning seat, and the calibration seat is used to calibrate the initial position of the first joint when the elastic deformation body is not subjected to force;

[0010] The test seat is arranged on a side of the second positioning seat away from the first positioning seat, and a positioning block and a travel block arranged along the axial direction of the core rope are slidably arranged on the test seat, the positioning block is used to fix the second joint, and a tension pressure sensor is arranged between the travel block and the positioning block;

[0011] The push-pull mechanism is used to drive the travel block to drive the positioning block to approach or move away from the second positioning seat.

[0012] As an optional solution, the travel block is provided with a pressure-bearing part extending perpendicular to its own moving direction, and the push-pull mechanism includes two first pressing cylinders located on both sides of the pressure-bearing part, and the output rods of the two first pressing cylinders alternately press the pressure-bearing part.

[0013] As an optional solution, the shift cable resistance testing device further includes a reset mechanism, which is used to drive the travel block to drive the second joint back to an initial position when the elastic deformation body is not subjected to force.

[0014] As an optional solution, the reset mechanism includes two second pressing cylinders located on both sides of the pressure-bearing part, and the output rods of the two second pressing cylinders synchronously press against the pressure-bearing part.

[0015] As an optional solution, two limit switches are provided on one side of the test seat, and the two limit switches are located on the moving path of the pressure-bearing part. The pressure-bearing part is driven by two first pressure cylinders to move between the two limit switches.

[0016] As an optional solution, a displacement sensor is provided on one side of the test seat, and a pull rod of the displacement sensor is connected to the positioning block.

[0017] As an optional solution, a connecting plate is provided on the first positioning seat, a lifting cylinder is provided on the connecting plate, the proofreading seat is installed on the output rod of the lifting cylinder, the lifting cylinder is used to drive the proofreading seat to descend after proofreading the position of the first joint, so that the first joint is separated from the proofreading seat, and a concave cavity adapted to the shape of the first joint is provided on the proofreading seat.

[0018] As an optional solution, a proximity switch is provided on the connecting plate and on one side of the calibration seat.

[0019] As an optional solution, the shift cable resistance testing device also includes a workbench, on which a horizontally arranged linear guide rail is provided, and the first positioning seat, the second positioning seat, and the test seat are respectively slidably set on the linear guide rail, and locking blocks that can be fixed to the linear guide rail are respectively provided on both sides of the first positioning seat and both sides of the second positioning seat.

[0020] As an optional solution, a support plate for supporting the sleeve is provided between the first positioning seat and the second positioning seat.

[0021] Beneficial effects of the present invention:

[0022] The shift cable resistance testing device can quickly position the shift cable and detect the sleeve length, total length of the shift cable and shift cable stroke by loading the shift cable on the first positioning seat, the second positioning seat, the proofreading seat and the positioning blocks of the test seat. The core rope is driven to move relative to the sleeve by a push-pull mechanism to complete the test of the axial movement and tensile resistance of the shift cable, thereby reducing the difficulty of detection and improving the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of a shift cable provided by an embodiment of the present invention;

[0024] Figure 2 is a structural schematic diagram of a gear shift cable resistance testing device provided by an embodiment of the present invention;

[0025] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 yes Figure 2 Enlarged view of point B in the middle.

[0027] In the attached figure:

[0028] 100, shift cable; 101, sleeve; 102, core rope; 103, first pipe cap; 104, second pipe cap; 105, first joint; 106, second joint; 107, elastic deformation body;

[0029] 1. First positioning seat; 2. Second positioning seat; 3. Proofreading seat; 4. Test seat; 5. Positioning block; 6. Travel block; 7. Tension pressure sensor; 8. Pressure-bearing part; 9. First top pressure cylinder; 10. Second top pressure cylinder; 11. Limit switch; 12. Displacement sensor; 13. Connecting plate; 14. Lifting cylinder; 15. Proximity switch; 16. Workbench; 17. Linear guide; 18. Locking block; 19. Support plate. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0033] In the description of this embodiment, terms such as "up", "down", "left", and "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first", "second", etc. are merely used to distinguish in description and have no special meanings.

[0035] against Figure 1 The shift cable 100 shown includes a sleeve 101 and a core rope 102 inserted in the sleeve 101, one end of the sleeve 101 is provided with a first pipe cap 103, the other end of the sleeve 101 is provided with a second pipe cap 104, one end of the core rope 102 extends out of the first pipe cap 103 and is provided with a first joint 105, the other end of the core rope 102 extends out of the second pipe cap 104 and is provided with a second joint 106, and an elastic deformation body 107 is connected between the second pipe cap 104 and the second joint 106. When the shift cable 100 leaves the factory, it needs to be tested for length and tensile resistance of the second joint 106.

[0036] For this, see Figures 2 to 4 As shown, this embodiment provides a shift cable resistance testing device, comprising a first positioning seat 1, a second positioning seat 2, a calibration seat 3, a test seat 4 and a push-pull mechanism, wherein:

[0037] The first positioning seat 1 is used to fix the first pipe cap 103, and the second positioning seat 2 is used to fix the second pipe cap 104. The distance between the first positioning seat 1 and the second positioning seat 2 is adjustable so that the sleeve 101 remains in a straight state. The first positioning seat 1 and the second positioning seat 2 cooperate to detect the length of the sleeve 101;

[0038] The calibration seat 3 is disposed on the first positioning seat 1 and is away from the second positioning seat 2. The calibration seat 3 is used to calibrate the initial position of the first joint 105 when the elastic deformation body 107 is not subjected to force.

[0039] The test seat 4 is arranged on a side of the second positioning seat 2 away from the first positioning seat 1. A positioning block 5 and a travel block 6 arranged along the axial direction of the core rope 102 are slidably arranged on the test seat 4. The positioning block 5 is used to fix the second joint 106. A tension pressure sensor 7 is arranged between the travel block 6 and the positioning block 5. The positioning block 5 cooperates with the calibration seat 3 to measure the total length of the shift cable 100. The travel block 6 is used to measure the travel of the shift cable 100.

[0040] The push-pull mechanism is used to drive the travel block 6 to drive the positioning block 5 to approach or move away from the second positioning seat 2.

[0041] Therefore, by loading the shift cable 100 on the positioning block 5 of the first positioning seat 1, the second positioning seat 2, the proofreading seat 3 and the test seat 4, the shift cable 100 can be quickly positioned and the length of the sleeve 101, the total length of the shift cable 100 and the stroke of the shift cable 100 can be detected. The core rope 102 is driven to move relative to the sleeve 101 by the push-pull mechanism to complete the test of the axial movement and tensile resistance of the shift cable 100, thereby reducing the difficulty of detection and improving the accuracy of the detection results.

[0042] Optionally, the travel block 6 is provided with a pressure-bearing part 8 extending perpendicularly to its own moving direction, and the push-pull mechanism includes two first pressing cylinders 9 located on both sides of the pressure-bearing part 8, and the output rods of the two first pressing cylinders 9 press the pressure-bearing part 8 alternately.

[0043] Thus, the two first push cylinders 9 act alternately on the pressure-bearing part 8 to realize the action of pushing and pulling the second joint 106 relative to the second pipe cap 104, and the tension and pressure sensor 7 is used to monitor whether the tension and pressure are normal to realize the tension and compression test of the second joint 106.

[0044] Optionally, the shift cable resistance testing device further comprises a reset mechanism, which is used to drive the travel block 6 to drive the second joint 106 to return to an initial position when the elastic deformation body 107 is not subjected to force.

[0045] Therefore, each pulling or pushing action is started by the reset mechanism when the elastic deformation body 107 is not subjected to force, thereby ensuring the measurement accuracy of the resistance.

[0046] Furthermore, the reset mechanism includes two second pressing cylinders 10 located on both sides of the pressure-bearing part 8 , and the output rods of the two second pressing cylinders 10 press against the pressure-bearing part 8 synchronously.

[0047] Thus, the two second pressing cylinders 10 push against each other, so as to move the travel block 6 to the center position, that is, to reset the second joint 106.

[0048] Optionally, two limit switches 11 are provided on one side of the test seat 4 , and the two limit switches 11 are located on the moving path of the pressure-bearing part 8 , and the pressure-bearing part 8 is driven by two first pressing cylinders 9 to move between the two limit switches 11 .

[0049] When the pressure-bearing part 8 triggers any limit switch 11, the output rod of the corresponding extended first pressing cylinder 9 is retracted, and the output rods of the two second pressing cylinders 10 are extended.

[0050] Thus, the pressure-bearing part 8 is ensured to move within a normal range, avoiding excessive pulling or pressing to damage the shift cable 100, and the first pressure cylinder 9 and the second pressure cylinder 10 are moved in sequence to avoid mutual interference.

[0051] Optionally, a displacement sensor 12 is provided on one side of the test seat 4 , and a pull rod of the displacement sensor 12 is connected to the positioning block 5 .

[0052] Therefore, the position of the second joint 106 is detected in real time by the displacement sensor 12 , and the driving is stopped in time when an abnormality occurs, so as to avoid damage to the shift cable 100 .

[0053] Optionally, a connecting plate 13 is provided on the first positioning seat 1, and a lifting cylinder 14 is provided on the connecting plate 13. The proofreading seat 3 is installed on the output rod of the lifting cylinder 14. The lifting cylinder 14 is used to drive the proofreading seat 3 to descend after proofreading the position of the first joint 105, so that the first joint 105 is separated from the proofreading seat 3. The proofreading seat 3 is provided with a concave cavity adapted to the shape of the first joint 105.

[0054] Therefore, the relative position of the first joint 105 of the shift cable 100 installed in the shift cable resistance testing device can be quickly measured through the calibration seat 3, which is more convenient to operate especially when batch testing the same type of cable products.

[0055] Furthermore, a proximity switch 15 is provided on the connecting plate 13 and on one side of the proofreading seat 3 . The push-pull mechanism can be started only when the proofreading seat 3 descends and triggers the proximity switch 15 .

[0056] Therefore, the push-pull mechanism is triggered by the proximity switch 15 to avoid the situation where the first connector 105 is fixed and the second connector 106 is pushed and pulled, resulting in abnormal detection or even damage to the shift cable 100.

[0057] Optionally, the shift cable resistance testing device also includes a workbench 16, on which a horizontally arranged linear guide rail 17 is provided, and the first positioning seat 1, the second positioning seat 2, and the test seat 4 are respectively slidably provided on the linear guide rail 17, and both sides of the first positioning seat 1 and both sides of the second positioning seat 2 are respectively provided with locking blocks 18 that can be fixed to the linear guide rail 17.

[0058] Therefore, the relative positions of the first positioning seat 1, the second positioning seat 2 and the test seat 4 are adjustable to adapt to different types of shift cables 100, thereby improving the versatility of the shift cable resistance testing device.

[0059] Optionally, a support plate 19 for supporting the sleeve 101 is provided between the first positioning seat 1 and the second positioning seat 2 .

[0060] Therefore, the sleeve 101 is supported by the supporting plate 19 to prevent the middle part of the sleeve 101 from sagging, which would affect the smooth movement of the core rope 102 in the sleeve 101 and further affect the accuracy of the measured tension and pressure.

[0061] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A gear shift cable resistance testing device, the gear shift cable (100) comprising a sleeve (101) and a core rope (102) inserted into the sleeve (101), one end of the sleeve (101) being provided with a first pipe cap (103), the other end of the sleeve (101) being provided with a second pipe cap (104), one end of the core rope (102) extending out of the first pipe cap (103) and being provided with a first joint (105), the other end of the core rope (102) extending out of the second pipe cap (104) and being provided with a second joint (106), an elastic deformation body (107) being connected between the second pipe cap (104) and the second joint (106), characterized in that: The gear shift cable resistance testing device comprises a first positioning seat (1), a second positioning seat (2), a calibration seat (3), a testing seat (4) and a push-pull mechanism, wherein: The first positioning seat (1) is used to fix the first pipe cap (103), and the second positioning seat (2) is used to fix the second pipe cap (104). The distance between the first positioning seat (1) and the second positioning seat (2) is adjustable so that the sleeve (101) remains in a straight state. The calibration seat (3) is arranged on the first positioning seat (1) and on a side away from the second positioning seat (2), and the calibration seat (3) is used to calibrate the initial position of the first joint (105) when the elastic deformation body (107) is not subjected to force; The test seat (4) is arranged on a side of the second positioning seat (2) away from the first positioning seat (1); a positioning block (5) and a travel block (6) arranged along the axial direction of the core rope (102) are slidably arranged on the test seat (4); the positioning block (5) is used to fix the second joint (106); a tension and pressure sensor (7) is arranged between the travel block (6) and the positioning block (5); The push-pull mechanism is used to drive the travel block (6) to drive the positioning block (5) to move closer to or farther away from the second positioning seat (2).

2. The shift cable resistance testing device according to claim 1, characterized in that: The travel block (6) is provided with a pressure-bearing portion (8) extending in a direction perpendicular to its own moving direction, and the push-pull mechanism comprises two first pressing cylinders (9) located on both sides of the pressure-bearing portion (8), and the output rods of the two first pressing cylinders (9) alternately press the pressure-bearing portion (8).

3. The shift cable resistance testing device according to claim 2, characterized in that: It also includes a reset mechanism, which is used to drive the travel block (6) to drive the second joint (106) to return to an initial position when the elastic deformation body (107) is not under force.

4. The shift cable resistance testing device according to claim 3, characterized in that: The reset mechanism comprises two second pressing cylinders (10) located on both sides of the pressure-bearing part (8), and the output rods of the two second pressing cylinders (10) synchronously press against the pressure-bearing part (8).

5. The shift cable resistance testing device according to claim 4, characterized in that: Two limit switches (11) are arranged on one side of the test seat (4), and the two limit switches (11) are located on the moving path of the pressure-bearing part (8). The pressure-bearing part (8) is driven by the two first pressure cylinders (9) to move between the two limit switches (11).

6. The shift cable resistance testing device according to claim 1, characterized in that: A displacement sensor (12) is provided on one side of the test seat (4), and a pull rod of the displacement sensor (12) is connected to the positioning block (5).

7. The shift cable resistance testing device according to claim 1, characterized in that: The first positioning seat (1) is provided with a connecting plate (13), the connecting plate (13) is provided with a lifting cylinder (14), the calibration seat (3) is mounted on an output rod of the lifting cylinder (14), the lifting cylinder (14) is used to drive the calibration seat (3) to descend after calibrating the position of the first joint (105), so that the first joint (105) is separated from the calibration seat (3), and the calibration seat (3) is provided with a concave cavity adapted to the shape of the first joint (105).

8. The shift cable resistance testing device according to claim 7, characterized in that: A proximity switch (15) is provided on the connecting plate (13) and located on one side of the calibration seat (3).

9. The shift cable resistance testing device according to claim 1, characterized in that: The invention also comprises a workbench (16), on which a linear guide rail (17) arranged in a horizontal direction is arranged, and the first positioning seat (1), the second positioning seat (2), and the test seat (4) are respectively slidably arranged on the linear guide rail (17), and locking blocks (18) capable of being fixed to the linear guide rail (17) are respectively arranged on both sides of the first positioning seat (1) and both sides of the second positioning seat (2).

10. The shift cable resistance testing device according to claim 1, characterized in that: A support plate (19) for supporting the sleeve (101) is arranged between the first positioning seat (1) and the second positioning seat (2).

Images