Cart testing device

Abstract

The utility model relates to the technical field of testing devices, and provides a cart testing device which comprises a testing frame, a folding cart can be placed on the testing frame, a button is arranged on the cart, a pressing device is arranged on the testing frame, the pressing device can press the button of the cart, a pushing device is arranged on the testing frame, and the pushing device is arranged on the testing frame. The pushing device can push the handle of the cart to do back-and-forth folding and unfolding movement. The automatic testing device is used for testing the folding strength and durability of the folding cart, the testing time can be shortened, the testing efficiency can be improved, the stability and consistency of the testing process can be ensured, the manual operation can be reduced, more accurate and real testing results can be obtained, and the problems that an existing cart testing device is low in testing efficiency and high in testing efficiency can be solved. The accuracy of the test result is poor, and the folding test of the push type folding cart is difficult to carry out.

Description

Technical Field

[0001] The utility model relates to the technical field of testing devices, in particular to a cart testing device. Background Art

[0002] With the development of science and technology and the improvement of living standards, trolleys have been recognized by people for their unique portability and convenient characteristics of carrying goods, and have been basically popularized. Trolleys need to undergo reliability testing before they are put on the market for sale. This is an activity to ensure that the product has functional reliability within the specified lifespan and under all conditions of expected use, transportation or storage. Most trolley reliability tests focus on problems such as difficulty in turning casters, easy jamming and trolley load-bearing capacity. Existing trolleys are usually foldable, but there are few tests on the folding strength of trolleys. In addition, existing test devices for the folding resistance of trolleys usually have low test efficiency and poor test result accuracy, especially for handle-pressing trolleys, which are difficult to fold. Utility Model Content

[0003] Therefore, in view of the above problems, the utility model proposes a cart testing device, which solves the technical problems that the existing cart testing devices have low testing efficiency, poor test result accuracy, and are difficult to perform folding tests on push-type folding carts.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A cart testing device comprises a testing frame, on which a folding cart can be placed, the cart has a button, a pressing device is provided on the testing frame, the pressing device can press the button of the cart, and a pushing device is provided on the testing frame, the pushing device can push the handle of the cart to perform a reciprocating folding and opening motion.

[0006] Further:

[0007] The pressing device comprises a first driving device arranged on the test frame and a push plate arranged at the output end of the first driving device, and the first driving device can push the push plate to press the button of the cart.

[0008] The pushing device comprises a second driving device arranged on the test frame, a connecting rod rotatably arranged at the output end of the second driving device, and the other end of the connecting rod is rotatably connected to the trolley.

[0009] The pushing device also includes a fixing member, which includes a plate body and at least one clamping plate detachably arranged on the plate body. The plate body and the clamping plate are fixed to the handle of the cart by bolt clamping, and the connecting rod is rotatably arranged on the plate body.

[0010] The test frame is provided with a fixing device, and the fixing device is used to fix the cart casters.

[0011] The fixing device comprises a plurality of positioning plates arranged on the test frame, and the casters of the cart abut against the positioning plates.

[0012] The positioning plate is detachably connected to the test frame. The side of the positioning plate that abuts against the cart caster is an inclined surface. The inclined surface is provided with a long groove, and the cart caster can be clamped in the long groove. The inclined surfaces are arranged opposite to each other in pairs.

[0013] The test frame is provided with a third driving device, one end of which is connected to the trolley, and the third driving device can drive the trolley to move back and forth.

[0014] The test frame is provided with at least one mounting groove, on which a slide rail is detachably mounted, and the casters of the cart can move along the slide rail.

[0015] The test frame comprises a base, a door frame vertically arranged on the base, and a roller arranged at the bottom of the base.

[0016] By adopting the above technical solution, the beneficial effects of the utility model are:

[0017] When the utility model is used, the button of the cart is first pressed by the pressing device, so that the handle and the seat of the cart are in a rotatable connection state, and then the handle of the cart is pushed by the pushing device to make the handle fold and open back and forth, which is used to test the folding strength and durability of the folding cart. The automated testing device can shorten the test time, improve the test efficiency, ensure the stability and consistency of the test process, and can perform hundreds or even thousands of folding actions without manual labor to obtain more accurate and true test results; further, the first driving device pushes the push plate to press the button of the cart, which has the characteristics of simple structure and convenient operation; further, the two ends of the connecting rod are rotatably connected to the cart and the second driving device respectively, and the connecting rod can rotate an angle when pushing the handle of the cart, The smoothness and stability of the whole process are improved, and the force can be withstood in different directions, so as to avoid deformation or breakage due to uneven force, and enhance durability and reliability; further, the plate body and the clamping plate can be conveniently and quickly installed on the handle of the cart by bolts; further, the positioning plate has a certain fixing effect on the caster of the cart, so as to prevent the caster from sliding forward or backward due to external force when the handle of the cart is folded or opened; further, the fixing effect of the positioning plate on the caster is improved by the inclined surface and the long groove; further, the third driving device is started to push the cart back and forth to test the wear resistance of the caster of the cart, which can expand the scope of use of the test device and has strong practicality; further, the caster of the cart slides along the slide rail to prevent the caster from running off. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model when it is used;

[0019] Figure 2 It is a structural schematic diagram of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the pressing device in the utility model;

[0021] Figure 4 It is a structural schematic diagram of the pushing device in the utility model;

[0022] Figure 5 yes Figure 4 A partial enlarged view of

[0023] Figure 6 It is a structural schematic diagram of the positioning plate in the utility model;

[0024] Figure 7 It is a schematic diagram of the structure of the utility model with the third driving device and the slide rail installed;

[0025] Figure 8 yes Figure 7 Schematic diagram of the structure of the middle slide rail.

[0026] In the figure: 1. test frame; 11. base; 12. door frame; 13. roller; 2. pressing device; 21. first driving device; 22. push plate; 3. pushing device; 31. second driving device; 32. connecting rod; 33. plate body; 34. clamping plate; 35. bolt; 4. positioning plate; 41. long groove; 5. third driving device; 14. mounting groove; 15. slide rail. DETAILED DESCRIPTION

[0027] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0028] refer to Figures 1 to 6 The utility model provides a cart testing device, including a testing frame 1, the testing frame 1 including a base 11, a door frame 12 vertically arranged on the base 11, and a roller 13 arranged at the bottom of the base 11. A folding cart can be placed on the testing frame 1, and the cart has a button. A pressing device 2 is provided on the testing frame 1, and the pressing device 2 can press the button of the cart. The pressing device 2 includes a first driving device 21 arranged on the testing frame 1, and a push plate 22 arranged at the output end of the first driving device 21. The first driving device 21 can push the push plate 22 to press the button of the cart.

[0029] The test frame 1 is provided with a pushing device 3, which can push the handle of the cart to fold and open back and forth, and the pushing device 3 includes a second driving device 31 provided on the test frame 1, and a connecting rod 32 rotatably provided at the output end of the second driving device 31, and the other end of the connecting rod 32 is rotatably connected to the cart. The pushing device 3 also includes a fixing member, which includes a plate body 33 and two clamping plates 34 detachably provided on the plate body 33, and the plate body 33 and the clamping plates 34 are clamped and fixed to the handle of the cart by bolts 35, and the connecting rod 32 is rotatably provided on the plate body 33.

[0030] The test frame 1 is provided with a fixing device, which is used to fix the cart caster. The fixing device includes a plurality of positioning plates 4 provided on the test frame 1, and the cart caster abuts against the positioning plates 4. The positioning plates 4 are detachably connected to the test frame 1, and the side of the positioning plates 4 abutting against the cart caster is an inclined surface, and a long groove 41 is provided on the inclined surface, and the cart caster can be clamped in the long groove 41, and the inclined surfaces are arranged opposite to each other.

[0031] The handle of the above-mentioned folding cart can adopt a folding handle of a trolley provided in Chinese patent application number: 202021346959.8, or a folding cart with other buttons. The above-mentioned buttons can be set at the top, side, bottom or other positions of the cart armrest. The pressing device 2 can press the button in different directions according to the position of the button.

[0032] The roller 13 may not be provided, and the test frame 1 may be designed to be fixed, which is provided according to specific circumstances.

[0033] The number of the positioning plates 4 may be two, three, four or even more, and the positioning plates 4 may also be fixed on the test frame 1 , depending on the specific situation.

[0034] The above-mentioned long groove 41 may not be provided, and may be provided according to specific circumstances.

[0035] The above-mentioned pushing device 3 can also adopt a cylinder, and the telescopic end and the rear end of the cylinder can be rotatably connected to the cart handle and the test frame 1 respectively. In this structure, the cylinder rotates, reducing the life of the cylinder. The pushing device 3 can also adopt other structures, which can be set according to specific circumstances.

[0036] The fixing member may also be a clamp or other structure capable of fixing the armrest, which may be arranged according to specific circumstances.

[0037] The utility model can be equipped with a counter for counting the number of times the cart is folded, which is a well-known device and will not be described in detail here.

[0038] The working mode of the utility model is:

[0039] When in use, the staff places the cart on the test frame 1, clamps the plate body 33 and the clamping plate 34 to the two handles of the cart by bolts 35, one end of the connecting rod 32 is rotatably connected to the plate body 33, and the other end is rotatably connected to the second driving device 31, and the test can be started. The first driving device 21 is started to move the push plate 22 upward, and the push plate 22 presses the cart button, so that the handle and the seat of the cart are in a rotatable connection state, and then the second driving device 31 is started. The second driving device 31 pushes the connecting rod 32 to extend forward, and the connecting rod 32 pushes the cart handle to rotate downward, thereby completing a folding. The second driving device 31 pulls the connecting rod 32 to retract backward, and the connecting rod 32 pulls the cart handle to rotate upward, thereby completing an unfolding. The cycle is repeated, so that the cart handle performs a reciprocating folding and opening movement until the cart is damaged. The number of times the cart is folded is recorded to obtain the number of times the cart can be folded.

[0040] refer to Figures 7 and 8 The utility model can also test the forward and backward movement of the cart. The pressing device 2, the pushing device 3 and the positioning plate 4 are removed, and the third driving device 5 and the slide rail 15 are installed. One end of the third driving device 5 is connected to the cart. The third driving device 5 can push the cart to move back and forth. The test frame 1 is provided with a plurality of mounting grooves 14, and the slide rail 15 is detachably mounted on the mounting groove 14. The casters of the cart can move along the slide rail 15 until the cart is damaged, and the data of the damage of the cart is recorded.

[0041] The first driving device 21, the second driving device 31 and the third driving device 5 can be a cylinder, an oil cylinder, a linear motor or other linear motion mechanisms, which can be configured according to specific circumstances.

[0042] The slide rail 15 may be one, two, three or even more, depending on the specific situation.

[0043] The third driving device 5 and the slide rail 15 can be installed selectively, or they may not be set. Alternatively, two door frames 12 may be set on both sides of the test frame 1, and the pressing device 2 and the third driving device 5 may be set on the two door frames 12 respectively, without the need for disassembly and replacement.

[0044] The utility model can be equipped with a counter for counting the number of times the cart moves forward and backward, which is a well-known device and will not be described in detail here.

[0045] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A cart testing device, characterized in that: It comprises a test frame, on which a folding cart can be placed, the cart has a button, a pressing device is provided on the test frame, the pressing device can press the button of the cart, and a pushing device is provided on the test frame, the pushing device can push the handle of the cart to perform a reciprocating folding and opening movement.

2. A cart testing device according to claim 1, characterized in that: The pressing device comprises a first driving device arranged on the test frame and a push plate arranged at the output end of the first driving device, and the first driving device can push the push plate to press the button of the cart.

3. A cart testing device according to claim 1, characterized in that: The pushing device comprises a second driving device arranged on the test frame, a connecting rod rotatably arranged at the output end of the second driving device, and the other end of the connecting rod is rotatably connected to the trolley.

4. A cart testing device according to claim 3, characterized in that: The pushing device also includes a fixing member, which includes a plate body and at least one clamping plate detachably arranged on the plate body. The plate body and the clamping plate are fixed to the handle of the cart by bolt clamping, and the connecting rod is rotatably arranged on the plate body.

5. A cart testing device according to claim 1, characterized in that: The test frame is provided with a fixing device, and the fixing device is used to fix the cart casters.

6. A cart testing device according to claim 5, characterized in that: The fixing device comprises a plurality of positioning plates arranged on the test frame, and the casters of the cart abut against the positioning plates.

7. A cart testing device according to claim 6, characterized in that: The positioning plate is detachably connected to the test frame. The side of the positioning plate that abuts against the cart caster is an inclined surface. The inclined surface is provided with a long groove, and the cart caster can be clamped in the long groove. The inclined surfaces are arranged opposite to each other in pairs.

8. A cart testing device according to claim 1, characterized in that: The test frame is provided with a third driving device, one end of which is connected to the trolley, and the third driving device can drive the trolley to move back and forth.

9. A cart testing device according to claim 8, characterized in that: The test frame is provided with at least one mounting groove, on which a slide rail is detachably mounted, and the casters of the cart can move along the slide rail.

10. A cart testing device according to claim 1, characterized in that: The test frame comprises a base, a door frame vertically arranged on the base, and a roller arranged at the bottom of the base.

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