Wear resistance testing device and testing method for luggage pull rod

Abstract

The invention belongs to the technical field of wear resistance testing, and particularly relates to a wear resistance testing device and method for a luggage pull rod. Comprising a test box; a notch is formed in the test box; a box body is placed in the test box; the box body is positioned in the notch; a pull rod is slidably arranged on the side of the box; a position control clamping unit is arranged on the test box; the position control clamping unit comprises a first base; the two first bases are both mounted at the bottom of the test box; the two ends of the position control lead screw are connected to the opposite faces of the two first bases correspondingly. Two thread areas are symmetrically arranged on the position control screw rod; the thread directions of the two thread areas are opposite; the double-action testing device is arranged on the testing box; the double-action testing device comprises a limiting chute which is arranged at the bottom of the testing box in a penetrating manner; the limiting chute extends to the inner bottom surface of the test box; the pull rod can be smoothly pulled by the device, the device is prevented from being clamped due to the self-locking function of the device in the testing process, the testing effect and efficiency of the device are improved, and the limitation of the device in practical application is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of wear resistance test, and particularly relates to a wear resistance test device and test method for a luggage pull rod. BACKGROUND

[0002] The pull rod is the most frequently used and most easily worn part of a luggage case, and is not resistant to wear, which can easily lead to the product being unable to be normally used, so it is necessary to test the wear resistance of the luggage pull rod; however, the existing wear resistance test device for the luggage pull rod cannot smoothly pull the pull rod when in use, because the pull rod is self-locked at the current position, which not only affects the test effect, but also reduces the efficiency of the wear resistance test of the pull rod, so the device has strong limitations in actual application. SUMMARY

[0003] In view of the above problems, the application provides a wear resistance test device and test method for a luggage pull rod, which effectively solves the problems in the background art.

[0004] To achieve the above-mentioned purpose, the application provides the following technical scheme: a wear resistance test device for a luggage pull rod, comprising a test box; a notch is arranged in the test box; a box body is placed in the test box; the box body is located in the notch; a pull rod is slidably arranged on the side surface of the box body; a position control clamping unit is arranged on the test box and used for clamping and fixing the box body in the test box; the position control clamping unit comprises a first base; two first bases are both mounted on the bottom of the test box; a position control lead screw is connected to the opposite surfaces of the two first bases; two symmetrical screw threads are arranged on the position control lead screw; the screw threads of the two screw threads are opposite in direction; a double-action test device is arranged on the test box; the double-action test device is used for testing the wear resistance of the pull rod; the double-action test device comprises a limiting sliding groove, which is arranged through the bottom of the test box; the limiting sliding groove extends to the inner bottom surface of the test box; a limiting sliding block is connected to the limiting sliding groove in a matching mode; the limiting sliding block is in sliding cooperation with the limiting sliding groove; a double-action horizontal plate is mounted on the limiting sliding block; the double-action horizontal plate is located in the test box and on the side surface of the pull rod; a pressing and locking assembly is arranged on the double-action horizontal plate; the pressing and locking assembly is used for long-time unlocking of the pull rod; the pressing and locking assembly comprises a T-shaped base, which is connected to the side of the double-action horizontal plate away from the limiting sliding block.

[0005] Preferably, a locking cylinder is connected to the side of the T-shaped base away from the double-action horizontal plate; a locking limiting plate is connected to the end of the locking cylinder away from the T-shaped base; Locking slider, connected to the locking cylinder through the side close to the double-action horizontal plate; the locking slider and the locking cylinder are in sliding fit; Locking spring, sleeved on the locking cylinder; one end of the locking spring is fixedly connected with the locking limiting plate, and the other end is fixedly connected with the locking slider.

[0006] Preferably, the locking insert block is connected to the side of the locking slider close to the double-action horizontal plate; the locking insert block penetrates to the side of the double-action horizontal plate away from the T-shaped base; The pressing square is installed on the side of the double-action horizontal plate close to the pull rod; the unlocking button on the pull rod is located on the moving path of the pressing square.

[0007] Preferably, the control circular block is installed on the control screw rod; the two control circular blocks are symmetrically arranged with the central axis of the control screw rod as the axis of symmetry; the two control circular blocks are in threaded fit with the two threaded areas respectively; The control sliding groove is arranged at the bottom of the test box; The control slider is connected to the control sliding groove in engagement; the control slider and the control sliding groove are in sliding fit; the control slider is installed on the control circular block; The guide square plate is connected to the two sides of the control slider; The driving source is connected to one of the first bases; the output end of the driving source is connected with the control screw rod.

[0008] Preferably, the bending rod body is connected to the guide square plate at one end and connected with the guide horizontal plate at the other end; the guide horizontal plate is located in the test box; the two control circular blocks correspond to the two guide horizontal plates, and the two guide horizontal plates are located on the two sides of the box body; The main patch is installed on the side of the guide horizontal plate close to the box body; The guide cylinder is connected to the side of the guide horizontal plate close to the box body in penetration; the guide cylinder and the guide horizontal plate are in sliding fit.

[0009] Preferably, the guide limiting plate is connected to the end of the guide cylinder away from the box body; The guide patch is installed on the end of the guide cylinder close to the box body; The guide spring is sleeved on the guide cylinder; one end of the guide spring is fixedly connected with the guide limiting plate, and the other end is fixedly connected with the guide horizontal plate; The secondary patch is connected to the side of the guide patch away from the box body.

[0010] Preferably, the rubber buffer pad is connected to the side of the guide patch close to the box body; the side surface of the box body is located on the moving path of the rubber buffer pad; when the rubber buffer pad contacts with the side surface of the box body, the secondary patch on the guide patch is located on the moving path of the main patch, and the main patch and the secondary patch are electrically connected.

[0011] Preferably, the rotary motor is connected to the bottom of the test box; A rotating disc is connected to the output end of the rotating motor; A second base is mounted on the test box; A positioning column is mounted at the edge of the rotating disc away from the test box; A positioning cylinder is connected to the second base near the positioning column; the positioning cylinder and the second base are in sliding fit.

[0012] Preferably, a positioning block is connected to the positioning cylinder; the positioning block is located away from the test box; A positioning sliding groove is arranged on the side of the positioning block away from the rotating disc; the positioning column is located in the positioning sliding groove and the two are in sliding fit; A blocking square cylinder is mounted on the side of the limiting sliding block away from the restoring horizontal plate; A blocking square column is connected to the blocking square cylinder; the blocking square column and the blocking square cylinder are in sliding fit; A blocking spring is arranged in the blocking square cylinder; one end of the blocking spring is fixedly connected to the inner bottom surface of the blocking square cylinder, and the other end is fixedly connected to the blocking square column; A blocking L-shaped rod is connected to the positioning block at one end and to the blocking square column at the other end.

[0013] Preferably, a restoring cylinder is connected to the restoring horizontal plate near the pull rod; the restoring cylinder and the restoring horizontal plate are in sliding fit; A restoring limiting plate is connected to the end of the restoring cylinder away from the pull rod; A restoring spring is sleeved on the restoring cylinder; one end of the restoring spring is fixedly connected to the restoring limiting plate, and the other end is fixedly connected to the restoring horizontal plate; An electric suction cup is connected to the end of the restoring cylinder near the pull rod; the electric suction cup is in contact with the pull rod; A locking slot is arranged on the side of the restoring cylinder near the locking sliding block; a plurality of locking slots are arranged at equal intervals; when the locking sliding block penetrates the restoring horizontal plate, it is connected to one of the locking slots.

[0014] The application also provides a wear-resistant test method for a luggage pull rod, which comprises the following steps: S1, placing a to-be-tested box into the notch of the test box, and operating the position control clamping unit to clamp and fix the box in the notch; S2, using the restoring test device to reciprocally pull the pull rod to test the wear resistance of the pull rod; S3, operating the pressing locking assembly to keep the pull rod in an unlocked state for a long time, so as to avoid the occurrence of jamming due to the self-locking function of the pull rod during the test process.

[0015] Compared with the prior art, the application has the following beneficial effects: (1) Moving the complex horizontal plate towards the pull rod, limiting its movement on the complex cylinder, and making the complex spring in the buffer state, then moving the pressing block on the complex horizontal plate towards the pull rod until the pressing block contacts the unlocking button on the pull rod, which can release the self-locking state of the pull rod. By releasing the locking slider, the locking spring in the buffer state is reset, which drives the locking slider to reset and move, and the locking insert block passes through the complex horizontal plate and connects with one of the locking slots, so that the complex horizontal plate is fixed at the current position. The pressing block on the complex horizontal plate directly contacts the unlocking button on the pull rod, which can make the pull rod in the unlocked state for wear resistance test, avoiding the self-locking setting of the pull rod at every position during the test, which can not only improve the test efficiency and effect of the device, but also avoid damage caused by self-locking during the test, further improving the use effect of the device. At the same time, when the complex horizontal plate is limited at the current position, the complex spring in the buffer state cannot reset, and the resulting elastic force acts on the complex horizontal plate, thereby increasing the strength and friction of the contact between the pressing block and the locking slot, avoiding dislocation caused by non-human factors during the limiting process of the complex horizontal plate, further improving the safety of the device, so that the device will not be locked and stuck at the current position during the test process due to the self-locking function of the pull rod, and the test device can smoothly pull the pull rod, which not only improves the test effect and efficiency of the device, but also reduces the limitations of the device in practical application; (2) After the guide horizontal plate moves a specified distance on the guide cylinder, the main patch on the guide horizontal plate will contact the secondary patch on the guide patch, and the contact between the secondary patch and the main patch will send a signal to the controller, indicating that the device has completed the clamping operation of the box body and can proceed to the next test operation. Then a start signal will be sent to the rotating motor to make the complex test device start working, which can test the wear resistance of the pull rod on the box body without manual intervention, reducing the work intensity of the staff. At the same time, if the clamped box body is dislocated, the guide patch originally in contact with the box body will no longer contact, the guide spring originally in the buffer state will reset, and the secondary patch and the main patch originally in contact will no longer contact. When the two are disconnected, the controller will receive the signal in the first time and send it to the control terminal to remind the staff to intervene in time, avoid safety accidents, improve the use safety of the device, and reduce the limitations of the device in practical application; (3) The positioning block is driven to move back and forth under the action of the blocking L-shaped rod, and drives the blocking square column to move back and forth, so that the limiting sliding block on the blocking square cylinder moves back and forth in the limiting sliding groove, so that the moving limiting sliding block drives the moving of the reverse horizontal plate, and drives the electric suction cup on the reverse cylinder to move back and forth, and the pull rod is fixedly connected with the electric suction cup, so that the pull rod moves back and forth, and moves back and forth on the box body, which can test the wear resistance of the pull rod, and avoid unqualified products from flowing into the market; it is worth mentioning that the moving distance of pull rods of different brands is also different, when the moving distance of the pull rod is short, the pull rod cannot continue to move after the one-way movement of the pull rod reaches the maximum position, so that the blocking square cylinder cannot continue to move, but the above-mentioned positioning block has not moved to the maximum position, so that the blocking L-shaped rod on the positioning block drives the blocking square column to move in the blocking square cylinder, so that the blocking spring is in a buffering state, so that the positioning block can move normally, avoiding the hindering of the pull rod moving back and forth to test the wear resistance of the tester, so that the device can test the wear resistance of the pull rod on the same size box body of different brands when testing the wear resistance of the pull rod, reducing the use limitation of the device, improving the use range of the device, and improving the testing effect of the device; (4) The two control position blocks move relative to each other, and drive the guide horizontal plate to move under the action of the respective bending rod bodies, so that the guide horizontal plate moves close to the side surface of the box body, so that the two guide horizontal plates move relative to each other; and the guide horizontal plate will also drive the guide pad to move under the action of the guide cylinder and the guide spring, so that the guide pad moves close to the side surface of the box body until it contacts, at this time, the two guide pads are in contact with the two sides of the box body, so as to clamp and fix the box body, avoiding the shaking, displacement or dislocation of the box body during the test process, which affects the test process and the result, and improves the use effect of the device; at the same time, when the two guide pads are in contact with the two sides of the box body, the rubber buffer pad on the guide pad is also in contact with the box body, which is used to increase the friction between the guide pad and the box body, so as to prevent the box body from slipping and moving, further reducing the use limitation of the device; at the same time, after the guide pad is in contact with the box body, the control lead screw can still be rotated, so that the guide horizontal plate moves in the guide cylinder on the guide pad, so that the guide spring is in a buffering state, which is used to increase the contact strength and friction between the guide pad and the box body, further improving the testing effect of the device on the box bag pull rod, avoiding the test position from being disturbed by non-human factors during the test process, and being able to apply different sizes of clamping force to the box body, avoiding that the clamping force is too large to cause damage to the box body, further improving the use effect of the device; at the same time, under the action of the guide spring and the rubber buffer pad, the buffering force brought by the two can also absorb the impact force suffered by the box body during the test process, further protecting the box body, so that the product quality and the accuracy of the test result can be guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0017] In the attached diagram: Figure 1 This is one of the schematic diagrams of the overall structure of the present invention; Figure 2 This is a schematic diagram of the pressing block structure of the present invention; Figure 3 This is a schematic diagram of the control block structure of the present invention; Figure 4 This is a top view of the main patch of the present invention; Figure 5 This is a schematic diagram of the internal structure of the test box of the present invention; Figure 6 This is a schematic diagram of the locking insert structure of the present invention; Figure 7 This is a top view of the housing of the present invention; Figure 8 This is a cross-sectional view of the limiting slide groove of the present invention; Figure 9 This is a schematic diagram of the positioning rectangular block structure of the present invention; Figure 10 This is the second schematic diagram of the overall structure of the present invention; Figure 11 This is a cross-sectional view of the locking slot of the present invention; Figure 12 This is a schematic diagram of the control slider structure of the present invention; Figure 13 This is a schematic diagram of the reciprocating horizontal plate structure of the present invention; In the diagram: 1. Test box; 2. Housing; 3. Pull rod; 4. First base; 5. Control screw; 6. Limiting groove; 7. Limiting slider; 8. Reciprocating horizontal plate; 9. T-shaped base; 10. Locking cylinder; 11. Locking limit plate; 12. Locking slider; 13. Locking spring; 14. Locking insert; 15. Pressing block; 16. Control block; 17. Control groove; 18. Control slider; 19. Guide plate; 20. Drive source; 21. Bending rod; 22. Guide horizontal plate; 23. Main patch; 24. 25. Guide cylinder; 26. Guide limiting plate; 27. Guide block; 28. Guide spring; 29. ​​Secondary patch; 30. Rubber buffer pad; 31. Rotary motor; 32. Rotating disk; 33. Secondary base; 34. Positioning column; 35. Positioning cylinder; 36. Positioning rectangular block; 37. Positioning groove; 38. Blocking square cylinder; 39. Blocking square column; 40. Blocking L rod; 41. Re-moving cylinder; 42. Re-moving limiting plate; 43. Re-moving spring; 44. Electric suction cup; 45. Locking slot. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] Implementation examples, by Figures 1 to 13 The present invention includes a test box 1; the test box 1 has a slot; a housing 2 is placed inside the test box 1; the housing 2 is located in the slot; a pull rod 3 is slidably arranged on the side of the housing 2; and a position control clamping unit is provided on the test box 1 for fixing and clamping the housing 2 inside the test box 1. The positioning clamping unit includes a first base 4; two first bases 4 are installed at the bottom of the test box 1; a positioning screw 5, with its two ends connected to the opposite faces of the two first bases 4 respectively; two threaded areas are symmetrically arranged on the positioning screw 5; the thread directions of the two threaded areas are opposite; and a positioning block 16 is installed on the positioning screw 5; the two positioning blocks 16 are symmetrically arranged about the central axis of the positioning screw 5; and the two positioning blocks 16 are threadedly engaged with the two threaded areas respectively. A control groove 17 is located at the bottom of the test box 1; a control slider 18 is fitted into the control groove 17; the control slider 18 slides in conjunction with the control groove 17; the control slider 18 is mounted on the control block 16; a guide square plate 19 is connected to both sides of the control slider 18; a drive source 20 is connected to one of the first bases 4; the output end of the drive source 20 is connected to the control screw 5; a bent rod 21 is connected at one end to the guide square plate 19 and at the other end to the guide cross plate 22; The guide plate 22 is located inside the test box 1; the two control blocks 16 correspond to two guide plates 22, and the two guide plates 22 are located on both sides of the box 2; the main patch 23 is installed on the side of the guide plate 22 near the box 2; the guide cylinder 24 is connected through the guide plate 22 on the side near the box 2. The guide cylinder 24 is slidably fitted with the guide plate 22; the guide limiting plate 25 is connected to the end of the guide cylinder 24 away from the housing 2; the guide patch 26 is installed on the end of the guide cylinder 24 close to the housing 2; the guide spring 27 is sleeved on the guide cylinder 24; one end of the guide spring 27 is fixedly connected to the guide limiting plate 25, and the other end is fixedly connected to the guide plate 22; the secondary patch 28 is connected to the side of the guide patch 26 away from the housing 2. A rubber buffer pad 29 is connected to the guide block 26 on the side near the housing 2; the side of the housing 2 is located on the moving path of the rubber buffer pad 29; when the rubber buffer pad 29 contacts the side of the housing 2, the secondary patch 28 on the guide block 26 is located on the moving path of the main patch 23, and the main patch 23 and the secondary patch 28 are electrically connected.

[0020] The box body 2 is placed in the slot of the test box 1, and the box body 2 is located between the two guide plates 22. The driving source 20 is started, and the output end drives the control lead screw 5 to rotate. The two control blocks 16 connected by threads move in the control sliding groove 17 through the control sliding block 18, and the two control blocks 16 move relative to each other and drive the guide plates 22 to move close to the side of the box body 2 under the action of the respective bending rod bodies 21, so that the two guide plates 22 move relative to each other. The guide plates 22 also drive the guide blocks 26 to move close to the side of the box body 2 under the action of the guide cylinders 24 and the guide springs 27, until they contact the box body 2. At this time, the two guide blocks 26 are in contact with the two sides of the box body 2, which is used to clamp and fix the box body 2 to avoid shaking, displacement or dislocation of the box body 2 during the test, which affects the test process and results, and improves the use effect of the device.

[0021] At the same time, when the two guide blocks 26 are in contact with the two sides of the box body 2, the rubber buffer pad 29 on the guide block 26 is also in contact with the box body 2, which is used to increase the friction between the guide block 26 and the box body 2 to prevent the box body 2 from slipping and moving. Further reduce the use limitations of the device. At the same time, when the guide block 26 is in contact with the box body 2, the control lead screw 5 can continue to rotate, the guide plate 22 is limited to move at the guide cylinder 24 on the guide block 26, and the guide spring 27 is in a buffer state, which is used to increase the contact strength and friction between the guide block 26 and the box body 2, further improve the test effect of the device on the luggage pull rod, avoid the test position from being disturbed by non-human factors during the test process, and can exert different clamping forces on the box body 2, avoid the clamping force being too large to cause damage to the box body, and further improve the use effect of the device.

[0022] At the same time, under the action of the guide spring 27 and the rubber buffer pad 29, the buffer force brought by the two can also absorb the impact force suffered by the box body 2 during the test, further protect the box body 2, and ensure the product quality and test result accuracy.

[0023] It should be noted that when the guide horizontal plate 22 moves a specified distance on the guide cylinder 24, the main patch 23 on the guide horizontal plate 22 will be in contact with the secondary patch 28 on the guide patch 26, and the contact between the secondary patch 28 and the main patch 23 will send a signal to the controller, indicating that the device has completed the clamping operation on the box 2 and can proceed to the next test operation, and then sends a start signal to the rotating motor 30, so that the double-action test device starts to work, that is, the wear resistance of the pull rod 3 on the box 2 can be tested without manual intervention, reducing the working strength of the workers. At the same time, if the clamped and fixed box 2 is dislocated, the guide patch 26 originally in contact with the box 2 no longer contacts, the guide spring 27 originally in the buffer state resets, and the secondary patch 28 and the main patch 23 originally in contact no longer contact. After the two are disconnected, the controller will receive the signal in the first time and send it to the control terminal to remind the workers to intervene in time to avoid safety accidents and improve the use safety of the device, thereby reducing the limitation of the device in actual application.

[0024] The double-action test device of the embodiment is arranged on the test box 1, and is used for testing the wear resistance of the pull rod 3. The double-action test device comprises a limiting sliding groove 6 arranged through the bottom of the test box 1, the limiting sliding groove 6 extending to the inner bottom surface of the test box 1, a limiting sliding block 7 connected in the limiting sliding groove 6, the limiting sliding block 7 being in sliding fit with the limiting sliding groove 6, a double-action horizontal plate 8 mounted on the limiting sliding block 7, the double-action horizontal plate 8 being located in the test box 1 and on the side of the pull rod 3, a rotating motor 30 connected to the bottom of the test box 1, and a rotating disc 31 connected to the output end of the rotating motor 30. A second base 32 is mounted on the test box 1, a positioning column body 33 is mounted on the edge of the rotating disc 31 away from the test box 1, a positioning cylinder 34 is connected through the side of the second base 32 close to the positioning column body 33, the positioning cylinder 34 being in sliding fit with the second base 32, a positioning cuboid 35 is connected to the positioning cylinder 34, the positioning cuboid 35 being located on the side of the rotating disc 31 away from the test box 1, and a positioning sliding groove 36 is arranged through the side of the positioning cuboid 35 away from the rotating disc 31. The positioning column body 33 is located in the positioning sliding groove 36 and is in sliding fit with the positioning sliding groove 36, a blocking square cylinder 37 is mounted on the side of the limiting sliding block 7 away from the double-action horizontal plate 8, a blocking square column 38 is connected in the blocking square cylinder 37, the blocking square column 38 being in sliding fit with the blocking square cylinder 37, and a blocking spring 39 is arranged in the blocking square cylinder 37, one end of the blocking spring 39 being fixedly connected to the inner bottom surface of the blocking square cylinder 37 and the other end being fixedly connected to the blocking square column 38. A stop L-shaped rod 40 is connected at one end to a positioning rectangular block 35 and at the other end to a stop square column 38; a repeating cylinder 41 is connected through the repeating horizontal plate 8 near the pull rod 3; the repeating cylinder 41 and the repeating horizontal plate 8 are in sliding fit; a repeating limiting plate 42 is connected to the end of the repeating cylinder 41 away from the pull rod 3; a repeating spring 43 is sleeved on the repeating cylinder 41; one end of the repeating spring 43 is fixedly connected to the repeating limiting plate 42, and the other end is fixedly connected to the repeating horizontal plate 8; an electric suction cup 44 is connected to the end of the repeating cylinder 41 near the pull rod 3; the electric suction cup 44 is in contact with the pull rod 3; a locking slot 45 is provided through the repeating cylinder 41 near the locking slider 12; several locking slots 45 are arranged at equal intervals; when the locking slider 12 passes through the repeating horizontal plate 8, it connects with one of the locking slots 45.

[0025] The pull rod 3 on the housing 2 is brought into contact with the electric suction cup 44. By activating the electric suction cup 44, it is fixed and adsorbed onto the pull rod 3. The position control clamping unit is used to send a start signal to the rotary motor 30, so that its output end drives the rotary disk 31 to rotate, causing the positioning column 33 on it to move back and forth within the positioning groove 36, thereby driving the positioning block 35 on it to move back and forth within the second base 32 via the positioning cylinder 34. Then, under the action of the blocking L rod 40, the positioning block 35 drives the blocking square column 38 to move back and forth, causing it to move back and forth through the blocking spring 39 to drive the blocking square cylinder 37, causing the limiting slider 7 on it to move back and forth within the limiting groove 6, thereby causing the moving limiting slider 7 to move the repeating horizontal plate 8, which in turn drives the electric suction cup 44 on the repeating cylinder 41 to move back and forth. The pull rod 3 is fixedly attached to the electric suction cup 44, which drives the pull rod 3 to move back and forth, making it move back and forth on the box 2. By doing this repeatedly, the wear resistance of the pull rod 3 can be tested, thus preventing unqualified products, i.e., the box 2, from entering the market.

[0026] It should be noted that since the moving distance of the pull rod 3 varies between different brands, when encountering a pull rod 3 with a shorter moving distance, that is, when the unidirectional movement of the pull rod 3 reaches its maximum position and cannot move further, the blocking cylinder 37 will also be unable to move further. However, before the aforementioned positioning block 35 has moved to its maximum position, the blocking L-shaped rod 40 on the positioning block 35 drives the blocking column 38 to move within the blocking cylinder 37, keeping the blocking spring 39 in a buffer state. This allows the positioning block 35 to move normally, avoiding obstruction when moving the pull rod 3 back and forth to test the wear resistance of the device, thus preventing the test from proceeding smoothly. When testing the wear resistance of the pull rod 3, it is possible to test the wear resistance of pull rods 3 of the same size on boxes 2 from different brands, reducing the limitations of the device's use, expanding its application range, and improving the testing effect.

[0027] The pressing locking assembly of the embodiment is arranged on the double-acting horizontal plate 8, and is used for long-time unlocking of the pull rod 3. The pressing locking assembly comprises a T-shaped base 9 connected to the double-acting horizontal plate 8 away from the limiting sliding block 7. A locking cylinder 10 is connected to the T-shaped base 9 away from the double-acting horizontal plate 8. A locking limiting plate 11 is connected to the locking cylinder 10 away from the T-shaped base 9. A locking sliding block 12 is connected to the locking cylinder 10 near the double-acting horizontal plate 8. The locking sliding block 12 is in sliding fit with the locking cylinder 10. A locking spring 13 is sleeved on the locking cylinder 10. One end of the locking spring 13 is fixedly connected with the locking limiting plate 11, and the other end is fixedly connected with the locking sliding block 12. A locking plug 14 is connected to the locking sliding block 12 near the double-acting horizontal plate 8. The locking plug 14 penetrates to the side of the double-acting horizontal plate 8 away from the T-shaped base 9. A pressing square 15 is installed on the double-acting horizontal plate 8 near the pull rod 3. The unlocking button on the pull rod 3 is located in the moving path of the pressing square 15.

[0028] When the device needs to test the wear resistance of the pull rod 3, the electric suction cup 44 is started to be fixedly adsorbed on the pull rod 3. When the electric suction cup 44 is fixedly installed on the pull rod 3, the position of the double-acting cylinder 41 is fixed with the electric suction cup 44. The locking sliding block 12 is pulled upward to be limited to move on the locking cylinder 10. The locking spring 13 is in a buffering state. Then the locking plug 14 on the locking sliding block 12 is separated from the double-acting horizontal plate 8 and no longer connected with one of the locking plug slots 45, so as to release the limiting setting of the double-acting horizontal plate 8. The double-acting horizontal plate 8 is moved towards the pull rod 3 to be limited to move on the double-acting cylinder 41. The double-acting spring 43 is in a buffering state. Then the pressing square 15 on the double-acting horizontal plate 8 is moved towards the pull rod 3 until the pressing square 15 contacts with the unlocking button on the pull rod 3, so as to release the self-locking state of the pull rod 3. The locking sliding block 12 is released to reset the locking spring 13 which is in a buffering state.

[0029] Further, the locking sliding block 12 is reset to move. The locking plug 14 on the locking sliding block 12 penetrates through the double-acting horizontal plate 8 and is connected with one of the locking plug slots 45, so as to limit and fix the double-acting horizontal plate 8 at the current position. The pressing square 15 on the double-acting horizontal plate 8 directly contacts with the unlocking button on the pull rod 3. Then the pull rod 3 is always in an unlocked state to test the wear resistance, so as to avoid that the device cannot smoothly test the pull rod 3 due to the self-locking setting of the pull rod 3 at every position during the test. Not only the test efficiency and effect of the device are improved, but also the damage caused by the self-locking of the pull rod 3 during the test is avoided, so as to further improve the use effect of the device.

[0030] Meanwhile, when the complex moving horizontal plate 8 is limited in the current position, the complex moving spring 43 in the buffering state cannot be reset, and the elastic force brought by the complex moving spring 43 acts on the complex moving horizontal plate 8, thereby increasing the strength and friction of the contact between the pressing block 15 and the locking slot 45, avoiding dislocation of the pressing block 15 in the limiting process of the complex moving horizontal plate 8 due to non-human factors, and further improving the safety of the device. When the device is used, the self-locking function of the pull rod 3 does not cause the pull rod 3 to be locked and stuck in the current position during the test process, so that the test device can smoothly pull the pull rod 3, not only improving the test effect and efficiency of the device, but also reducing the limitation of the device in practical application.

[0031] The application also provides a wear-resistant test method of the luggage pull rod, comprising the following steps: S1, placing the to-be-tested box body 2 into the slot of the test box 1, and operating the position control clamping unit to clamp and fix the box body 2 in the slot; S2, using the complex test device to reciprocally pull the pull rod 3 to test the wear resistance of the pull rod 3; S3, operating the pressing locking assembly to keep the pull rod 3 in the unlocked state for a long time, avoiding the self-locking function of the pull rod from causing jamming during the test process.

[0032] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device.

[0033] Although the embodiments of the application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the application, and the scope of the application is defined by the appended claims and their equivalents.

Claims

1. A wear resistance testing device for luggage trolley rods, comprising a test box; characterized in that: The test box has a slot; a housing is placed inside the test box; the housing is located inside the slot; a pull rod is slidably provided on the side of the housing; a position control clamping unit is provided on the test box for fixing and clamping the housing inside the test box; the position control clamping unit includes a first base; two first bases are installed on the bottom of the test box. The control screw is connected at both ends to the opposite surfaces of two first bases; the control screw has two symmetrically arranged threaded areas; the thread directions of the two threaded areas are opposite. A repeating test device is disposed on a test box; the repeating test device is used to test the wear resistance of the pull rod; the repeating test device includes a limiting groove that is disposed through the bottom of the test box; the limiting groove extends to the inner bottom surface of the test box; The limiting slider is fitted into the limiting groove; the limiting slider and the limiting groove slide in a sliding engagement. A repeating horizontal plate is installed on the limiting slider; the repeating horizontal plate is located inside the test box and on the side of the pull rod; A press-lock assembly is provided on the repeating horizontal plate; the press-lock assembly is used to release the locked state of the pull rod for a long time; the press-lock assembly includes a T-shaped base connected to the side of the repeating horizontal plate away from the limit slider.

2. The abrasion resistance testing device for a luggage handle according to claim 1, characterized in that: Includes a locking cylinder, connected to the side of the T-shaped base away from the repeating horizontal plate; A locking limit plate is connected to the end of the locking cylinder away from the T-shaped base; The locking slider is connected to the locking cylinder through the side near the repeating horizontal plate; the locking slider and the locking cylinder are in sliding engagement. A locking spring is sleeved on a locking cylinder; one end of the locking spring is fixedly connected to the locking limit plate, and the other end is fixedly connected to the locking slider.

3. The abrasion resistance testing device for a luggage handle according to claim 2, characterized in that: Includes a locking block connected to the side of the locking slider near the repeating horizontal plate; the locking block extends through to the side of the repeating horizontal plate away from the T-shaped base; The press block is installed on the side of the repeating horizontal plate near the pull rod; the unlock button on the pull rod is located on the movement path of the press block.

4. The abrasion resistance testing device for a luggage handle according to claim 1, characterized in that: Includes a control block, which is installed on the control screw; the two control blocks are symmetrically arranged with the central axis of the control screw as the axis of symmetry; the two control blocks are threaded into the two threaded areas respectively; The control slide is located at the bottom of the test box; A control slider is fitted into a control groove; the control slider and the control groove are slidably engaged; the control slider is mounted on a control block. Guide square plates are connected to both sides of the control slider; The drive source is connected to one of the first bases; the output of the drive source is connected to the control screw.

5. The abrasion resistance testing device for a luggage handle according to claim 4, characterized in that: It includes a bent rod body, one end of which is connected to a guide square plate, and the other end is connected to a guide horizontal plate; the guide horizontal plate is located inside the test box; two control round blocks correspond to two guide horizontal plates, and the two guide horizontal plates are located on both sides of the box body; The main patch is installed on the guide plate near the housing. A guide cylinder runs through the guide plate on the side near the housing; the guide cylinder and the guide plate slide together.

6. The abrasion resistance testing device for a luggage pull rod according to claim 5, characterized in that: Includes a guide plate, connected to the end of the guide cylinder away from the housing; The guide block is installed at one end of the guide cylinder near the housing. A guide spring is sleeved on a guide cylinder; one end of the guide spring is fixedly connected to a guide limiting plate, and the other end is fixedly connected to a guide cross plate. The secondary patch is connected to the guide patch on the side away from the housing.

7. The abrasion resistance testing device for a luggage handle according to claim 6, characterized in that: It includes a rubber buffer pad connected to the guide block near the box body; the side of the box body is located on the movement path of the rubber buffer pad; when the rubber buffer pad contacts the side of the box body, the secondary patch on the guide block is located on the movement path of the primary patch, and the primary patch and the secondary patch are electrically connected.

8. The abrasion resistance testing device for a luggage handle according to claim 1, characterized in that: Includes a rotary motor, connected to the bottom of the test box; A rotating disk is connected to the output end of a rotary motor; The second base is installed on the test box; The positioning column is installed on the edge of the rotating disk away from the test box. A positioning cylinder is connected through the second base to the side near the positioning column; the positioning cylinder and the second base are in sliding fit.

9. The abrasion resistance testing device for a luggage handle according to claim 1, characterized in that: It includes a positioning block connected to a positioning cylinder; the positioning block is located on the side of the rotating disk away from the test box. A positioning groove is provided through the positioning block on the side away from the rotating disk; the positioning column is located inside the positioning groove, and the two slide together. The blocking square tube is installed on the side of the limit slider away from the repeating horizontal plate; The blocking square column is fitted into the blocking square tube; the blocking square column and the blocking square tube are in sliding fit. A damping spring is installed inside a damping square tube; one end of the damping spring is fixedly connected to the bottom surface of the inner surface of the damping square tube, and the other end is fixedly connected to the damping square column. The L-shaped arresting rod is connected at one end to the positioning rectangular block and at the other end to the arresting square column.

10. The abrasion resistance testing device for a luggage pull rod according to claim 9, characterized in that: Includes a repeating cylinder, which is connected through the repeating horizontal plate to the side near the tie rod; the repeating cylinder and the repeating horizontal plate are in sliding fit. The repeating limit plate is connected to the end of the repeating cylinder away from the tie rod; A repeating spring is sleeved on a repeating cylinder; one end of the repeating spring is fixedly connected to a repeating limiting plate, and the other end is fixedly connected to a repeating horizontal plate. An electric suction cup is connected to one end of the reciprocating cylinder near the pull rod; the electric suction cup is in contact with the pull rod. A locking slot is provided through the reciprocating cylinder on the side near the locking slider; several locking slots are arranged at equal intervals; when the locking slider passes through the reciprocating horizontal plate, it connects with one of the locking slots.

11. A method for testing the abrasion resistance of a luggage handle, using the abrasion resistance testing device for luggage handles as described in claim 1, characterized in that, Including the following steps: S1. Place the box to be tested into the slot of the test box, and operate the position control clamping unit to clamp and fix the box in the slot. S2. Use a reciprocating test device to pull the rod back and forth to test its wear resistance. S3. Press and lock the component to keep the lever in the unlocked state for a long time, avoiding jamming due to the lever's self-locking function during testing.

Images