An experimental device for simulating the abrasion test of the walking wheels of luggage in a complex environment

Abstract

The present invention provides a test device for simulating the wear of luggage walking wheels in a complex environment, which relates to the field of walking wheel wear tests and includes: an equipment frame, a walking wheel clamping structure, and a pressing plate; the walking wheel clamping structure includes a first cartridge, a first clamping plate, a plug post, a second clamping plate, a second cartridge, a limit baffle, a lower connecting plate, an upper connecting plate, and a connecting rod; reciprocating lead screws and guide rods are respectively installed at the front and rear ends of the upper part inside the equipment frame; the pressing plate is arranged on the upper connecting plate, and four groups of connecting guide rods are fixedly connected to the pressing plate, and the four groups of connecting guide rods respectively slide upward through the equipment frame. It can change the pressure of the walking wheel during the walking wear test, simulate the wear test of the walking wheel under different pressures, and drive the walking wheel to rotate and walk on the test plate to test the wear test on test plates of different models, solving the problem of simulating the wear test of the walking wheel under different pressures and different environments.

Description

Technical Field

[0001] The present invention relates to the technical field of walking wheel wear test, and particularly relates to a wear test device for luggage walking wheels simulating complex environments. Background Art

[0002] During the actual use of luggage, it will experience various bumps, vibrations, and different walking environments. To improve the mobility of luggage, many handbags and rolling suitcases are equipped with universal wheels at the bottom. However, the use of luggage is based on a certain load capacity. Therefore, conducting a walking wear experiment on the walking wheels at the bottom of the luggage has become one of the key factors in evaluating the quality of luggage. For example, the application number is: CN202210382036.5, which discloses a wear test device for luggage walking wheels suitable for simulating complex application environments, including a machine body. The road condition simulation mechanism includes a transmission belt for carrying the luggage and allowing the rollers at the bottom of the luggage to roll. The walking mechanism includes a fixed frame that can be guided and moved along the length direction of the machine body, and the fixed frame can drive the luggage to move above the transmission belt. In the present invention, by placing the luggage in the fixed frame and moving the fixed frame to move the luggage to the lower end of the limit frame at different positions, the pressing force of the pressing rod on the luggage is changed by the protrusions with different thicknesses at the lower end of the limit frame. When the transmission belt is driven, the wear of the rollers under different pressing forces is tested.

[0003] Currently, the testing of luggage walking wheels is mostly limited to single conditions. Considering the weight differences of the items loaded in the luggage and the diversity of walking environments, it is necessary to simulate the wear tests of walking wheels under different pressures and different environmental conditions. Such tests can not only more accurately reflect the performance of luggage walking wheels in actual use but also be an important part of ensuring the quality of luggage and improving the user experience. Summary of the Invention

[0004] To solve the problems in the background art, the present invention provides a wear test device for luggage walking wheels simulating complex environments, which can change the pressure of the walking wheels during the walking wear test, simulate the wear test of the walking wheels under different pressures, and drive the walking wheels to rotate and walk on the test plate to test the wear on test plates of different models.

[0005] A wear test device for luggage walking wheels simulating complex environments provided by the present invention specifically includes: a device frame, a walking wheel clamping structure, and a pressing plate;

[0006] Three groups of cavities are provided at the inner bottom end of the device frame, and support frames are respectively provided at the upper side ends of the cavities, and test plates are supported and installed through the support frames;

[0007] The walking wheel clamping structure includes a first clamping cylinder, a first clamping plate, an insertion post, a second clamping plate, a second clamping cylinder, a limit baffle, a lower connecting plate, an upper connecting plate and a connecting rod;

[0008] The inner end of the first clamping cylinder is provided with a first clamping plate, and the outer end of the first clamping cylinder is provided with a first concave ring clamping groove. The first clamping cylinder is rotationally clamped on the lower connecting plate through the first concave ring clamping groove. The inner end of the second clamping cylinder is provided with a limit baffle, and one end of the second clamping cylinder close to the limit baffle is provided with a second concave ring clamping groove. The second clamping cylinder is also rotationally clamped on the lower connecting plate through the second concave ring clamping groove. The insertion post is installed with a second clamping plate, and the outer end of the insertion post is slidably inserted into the second clamping cylinder. The lower connecting plate is of an inverted L-shaped structure, and the connecting rod slides upward through the upper ends of two groups of lower connecting plates from bottom to top, is sleeved with a buffer spring, and passes through the outer end of the upper connecting plate and is fixed by a nut;

[0009] The front and rear ends of the upper part inside the equipment frame are respectively installed with a reciprocating lead screw and a guiding slide bar. The two ends of the reciprocating lead screw and the guiding slide bar are respectively inserted into bearing seats, and the bearing seats are fixedly connected to the inner wall of the equipment frame. A slider is meshed and sleeved on the reciprocating lead screw, and a guiding cylinder is slidably sleeved on the guiding slide bar;

[0010] The pressing plate is arranged at the upper end inside the equipment frame and is attached to the upper connecting plate. Four connecting guide rods are fixedly connected to the pressing plate. The four connecting guide rods respectively slide upward through the equipment frame and are sleeved with return springs.

[0011] Further, the test plates are divided into three different models, which are a wear test plate in a horizontal shape, a wear test plate with strip-shaped protrusions, and a wear test plate with frustum-shaped protrusions from right to left in sequence.

[0012] Further, the two ends of the reciprocating lead screw are respectively provided with a smooth shaft structure. The first driving motor at one end of the top of the equipment frame is connected to the smooth shaft structure at one end of the reciprocating lead screw through a transmission belt.

[0013] Further, a circle of conical clamping thorns are respectively arranged on the opposite surfaces of the first clamping plate and the second clamping plate.

[0014] Further, one end of the insertion post inserted into the second clamping cylinder is provided with upper and lower alignment slot grooves, and the clamping posts at the upper and lower ends inside the limit baffle are respectively clamped into the slot grooves.

[0015] Further, a clamping spring is also sleeved on the insertion post. The clamping spring is arranged between the second clamping plate and the limit baffle, and the inner end of the insertion post is inserted into the first clamping cylinder.

[0016] Furthermore, four U-shaped frames are connected to the top end of the upper connecting plate. The four U-shaped frames are arranged in pairs opposite to each other, and two sets of through holes are respectively provided on the U-shaped frames. The sliders and the connecting plates on the outer sides of the guide cylinders are respectively inserted into two opposite U-shaped frames, and are connected to the through holes on the connecting plates by bolts passing through the through holes.

[0017] Furthermore, a second driving motor is also installed on the upper connecting plate, and the second driving motor is connected to the connecting shaft at the outer end of the second clamping cylinder through a transmission belt.

[0018] Furthermore, scale rulers are respectively inlaid on the four connecting guide rods.

[0019] Furthermore, two threaded cylinders are inlaid on the top end of the equipment frame, and threaded adjusting rods are respectively connected in the two threaded cylinders through threads. The lower ends of the threaded adjusting rods are attached to the pressing plate.

[0020] A kind of test equipment for simulating the wear of luggage walking wheels in a complex environment provided by the present invention has the following beneficial effects:

[0021] The present invention can change the pressure of the walking wheel during the walking wear test, simulate the wear test of the walking wheel under different pressures, and drive the walking wheel to rotate and move on the test plate at the same time to test the wear test on test plates of different models.

[0022] In addition, by setting the walking wheel clamping structure, it is convenient to clamp the walking wheel to be tested between the first clamping plate and the second clamping plate, and drive the walking wheel to rotate through the second driving motor to test the wear test of the walking wheel on the horizontal wear test plate.

[0023] In addition, by setting the pressing plate, using the scale ruler on the connecting guide rod and by simultaneously rotating the two threaded adjusting rods, the pressing plate is pushed downward, and the pressure is transmitted to the walking wheel through the upper connecting plate, the buffer spring and the lower connecting plate, so as to change the pressure of the walking wheel during the walking wear test, thereby simulating the walking wear test of the walking wheel under different pressures.

[0024] In addition, the first driving motor can also be used to drive the reciprocating lead screw, drive the slider to slide back and forth on the reciprocating lead screw, and then push the walking wheel to rotate and move on the three test plates through the walking wheel clamping structure. By using the friction between the walking wheel and the three test plates, the wear test of the walking wheel on test plates of different models is tested, simulating the walking wear test of the walking wheel in a bumpy state and when encountering stones. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0026] The accompanying drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0027] In the accompanying drawings:

[0028] Figure 1 A schematic diagram showing the overall structure of the present invention is shown;

[0029] Figure 2 Shows the Figure 1 Enlarged schematic diagram of the structure at position A in the present invention;

[0030] Figure 3 Shows the Figure 1 Schematic diagram of the side elevation structure in the present invention;

[0031] Figure 4 Shows the Figure 1 Schematic diagram of the front structure in the present invention;

[0032] Figure 5 Shows the Figure 1 Schematic diagram of the structure when two groups of test plates are taken out upwards in the present invention;

[0033] Figure 6 Schematic diagram of the structure when the slider and the guide cylinder are removed from the U-shaped frame of the walking wheel clamping structure in the present invention;

[0034] Figure 7 Shows the Figure 6 Schematic diagram of the side structure when the walking wheel is removed in the present invention;

[0035] Figure 8 Shows the Figure 7 Schematic diagram of the structure after vertical sectioning of one end of the first cartridge, the first clamping plate, the second cartridge, and the limit baffle in the present invention;

[0036] Figure 9 Schematic diagram of the structure of the first cartridge, the first clamping plate, the insertion post, the second clamping plate, the second cartridge, and the limit baffle in the present invention;

[0037] Figure 10 Schematic diagram of the side structure of the second cartridge and the limit baffle in the present invention.

[0038] List of reference numerals

[0039] 1. Equipment frame; 101. Cavity; 1011. Support frame; 102. Test plate; 103. Reciprocating lead screw; 1031. Slider; 104. Guide slide bar; 1041. Guide cylinder; 105. Threaded cylinder; 106. First drive motor;

[0040] 2. Structure for clamping the walking wheels; 201. First cartridge; 2011. First concave ring slot; 202. First clamping plate; 203. Insertion post; 2031. Strip groove; 2032. Clamping spring; 204. Second clamping plate; 205. Second cartridge; 2051. Second concave ring slot; 2052. Connecting shaft; 206. Limit baffle; 2061. Positioning post; 207. Lower connecting plate; 208. Upper connecting plate; 2081. U-shaped frame; 2082. Second driving motor; 209. Connecting rod; 2091. Buffer spring;

[0041] 3. Pressing plate; 301. Connecting guide rod; 3011. Return spring; 302. Thread adjusting rod. Detailed implementation mode

[0042] In order to make the objectives, solutions and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the ordinary meanings in the art. The same reference numerals in the drawings represent the same components.

[0043] Embodiment 1: Please refer to Figures 1 to 10 :

[0044] The present invention provides a test device for simulating the wear of the walking wheels of a luggage in a complex environment, including: a device frame 1, a structure 2 for clamping the walking wheels, and a pressing plate 3;

[0045] Three cavities 101 are provided at the inner bottom end of the device frame 1, and support frames 1011 are respectively provided at the upper side ends of the cavities 101, and a test plate 102 is supported and installed through the support frames 1011;

[0046] The structure 2 for clamping the walking wheels includes a first cartridge 201, a first clamping plate 202, an insertion post 203, a second clamping plate 204, a second cartridge 205, a limit baffle 206, a lower connecting plate 207, an upper connecting plate 208, and a connecting rod 209;

[0047] The inner end of the first cartridge 201 is provided with a first clamping plate 202, and the outer end of the first cartridge 201 is provided with a first concave annular clamping groove 2011. The first cartridge 201 is rotationally clamped on the lower connecting plate 207 through the first concave annular clamping groove 2011. The inner end of the second cartridge 205 is provided with a limiting baffle 206, and one end of the second cartridge 205 close to the limiting baffle 206 is provided with a second concave annular clamping groove 2051. The second cartridge 205 is also rotationally clamped on the lower connecting plate 207 through the second concave annular clamping groove 2051. A second clamping plate 204 is installed on the plug post 203, and the outer end of the plug post 203 is slidably inserted into the second cartridge 205. The lower connecting plate 207 is of an inverted L-shaped structure, and the connecting rod 209 slides upward through the upper ends of two groups of lower connecting plates 207 respectively, is sleeved with a buffer spring 2091, and passes through the outer end of the upper connecting plate 208 and is fixed by a nut;

[0048] A reciprocating lead screw 103 and a guide slide bar 104 are respectively installed at the front and rear ends of the upper part inside the equipment frame 1. The two ends of the reciprocating lead screw 103 and the guide slide bar 104 are respectively inserted into bearing seats, and the bearing seats are fixedly connected to the inner wall of the equipment frame 1. A slider 1031 is meshed and sleeved on the reciprocating lead screw 103, and a guide cylinder 1041 is slidably sleeved on the guide slide bar 104;

[0049] The pressing plate 3 is arranged at the upper end inside the equipment frame 1 and is attached to the upper connecting plate 208. Four connecting guide rods 301 are fixedly connected to the pressing plate 3. The four connecting guide rods 301 respectively slide upward through the equipment frame 1 and are sleeved with return springs 3011.

[0050] In the embodiment of the present invention, as Figures 7 to 10 shown, one end of the plug post 203 inserted into the second cartridge 205 is provided with vertically aligned strip grooves 2031, and the clamping posts 2061 at the upper and lower ends inside the limiting baffle 206 are respectively inserted into the strip grooves 2031. A clamping spring 2032 is also sleeved on the plug post 203. The clamping spring 2032 is arranged between the second clamping plate 204 and the limiting baffle 206, and the inner end of the plug post 203 is inserted into the first cartridge 201. A circle of conical clamping thorns are respectively arranged on the opposite surfaces of the first clamping plate 202 and the second clamping plate 204. When it is necessary to install the test running wheel between the first clamping plate 202 and the second clamping plate 204, the second clamping plate 204 is pulled toward the limiting baffle 206 side, so that the inner end of the plug post 203 is drawn out of the first cartridge 201, and then the running wheel to be tested is inserted onto the inner end of the plug post 203, and the running wheel is clamped between the first clamping plate 202 and the second clamping plate 204 by using the clamping spring 2032 and a circle of conical clamping thorns on the first clamping plate 202 and the second clamping plate 204.

[0051] In the embodiment of the present invention, as Figures 6 to 8As shown in the figure, a second driving motor 2082 is also installed on the upper connecting plate 208, and the second driving motor 2082 is connected to the connecting shaft 2052 at the outer end of the second cartridge 205 through a transmission belt. The second driving motor 2082 drives the connecting shaft 2052 and the second cartridge 205 to rotate, and drives the plug post 203 to rotate through the positioning post 2061. Furthermore, the walking wheels are driven to rotate by a circle of conical clamping thorns on the second clamping plate 204 and the first clamping plate 202.

[0052] In the embodiment of the present invention, as Figure 1 and Figure 2 shown in the figure, four groups of U-shaped frames 2081 are also connected to the top end of the upper connecting plate 208. The four groups of U-shaped frames 2081 are arranged in pairs opposite to each other, and two groups of through holes are respectively provided on the U-shaped frames 2081. The slider 1031 and the connecting plates on the outer sides of the guide cylinders 1041 are respectively inserted into two opposite U-shaped frames 2081, and are connected to the through holes on the connecting plates by bolts passing through the through holes. When the pressing plate 3 presses down the upper connecting plate 208, the slider 1031 and the guide cylinder 1041 can act in the U-shaped frame 2081 to keep the height unchanged. When the slider 1031 slides back and forth on the reciprocating lead screw 103, the walking wheel clamping structure 2 can be pushed by the U-shaped frame 2081 to move the walking wheels back and forth.

[0053] In the embodiment of the present invention, as Figures 1 to 4 shown in the figure, scales are also inlaid on the four groups of connecting guide rods 301 respectively, and two threaded cylinders 105 are inlaid on the top end of the equipment frame 1 respectively. Threaded adjusting rods 302 are respectively connected to the two threaded cylinders 105 through threads. The lower ends of the threaded adjusting rods 302 are attached to the pressing plate 3. By using the scales on the connecting guide rods 301 and by simultaneously rotating the two threaded adjusting rods 302, the pressing plate 3 is pushed to move downward. The pressure is transmitted to the walking wheels through the upper connecting plate 208, the buffer spring 2091, and the lower connecting plate 207, so as to change the pressure of the walking wheels during the walking wear test and simulate the walking wear test of the walking wheels under different pressures.

[0054] In the embodiment of the present invention, as Figure 1 and Figure 4 shown in the figure, optical axis structures are respectively provided at both ends of the reciprocating lead screw 103. The first driving motor 106 at one end of the top of the equipment frame 1 is connected to the optical axis structure at one end of the reciprocating lead screw 103 through a transmission belt, and drives the reciprocating lead screw 103 through the first driving motor 106, driving the slider 1031 to slide back and forth on the reciprocating lead screw 103. The walking wheels are pushed by the walking wheel clamping structure 2 to rotate and move on the three test plates 102.

[0055] In the embodiment of the present invention, as Figure 1 and Figure 5As shown, the test board 102 is divided into three groups of different models. From right to left, they are a horizontal wear test board, a wear test board with strip-shaped protrusions, and a wear test board with frustum-shaped protrusions. By using the friction between the walking wheels and the three groups of test boards 102, the wear test of the walking wheels on the test boards 102 of different models is carried out, so as to simulate the walking wear test of the walking wheels in a bumpy state and when encountering stones.

[0056] Specific usage and functions of this embodiment: In the present invention,

[0057] First, pull the second clamping plate 204 towards the side of the limit baffle 206, so that the inner end of the insertion post 203 is pulled out from the first cartridge 201. Then, insert the walking wheel to be tested onto the inner end of the insertion post 203, and use the clamping spring 2032 and a circle of conical clamping thorns on the first clamping plate 202 and the second clamping plate 204 to clamp the walking wheel between the first clamping plate 202 and the second clamping plate 204;

[0058] Drive the connecting shaft 2052 and the second cartridge 205 to rotate through the second drive motor 2082, and drive the insertion post 203 to rotate through the positioning post 2061. Then, drive the walking wheel to rotate through a circle of conical clamping thorns on the second clamping plate 204 and the first clamping plate 202, and test the walking wear test of the walking wheel on the horizontal wear test board;

[0059] Secondly, use the scale on the connecting guide rod 301 and simultaneously rotate the two threaded adjusting rods 302 to push the pressing plate 3 downward. Transmit the pressure to the walking wheel through the upper connecting plate 208, the buffer spring 2091, and the lower connecting plate 207, change the pressure of the walking wheel during the walking wear test, and simulate the walking wear test of the walking wheel under different pressures;

[0060] Drive the reciprocating lead screw 103 through the first drive motor 106, drive the slider 1031 to slide back and forth on the reciprocating lead screw 103, and drive the walking wheel to rotate and move on the three groups of test boards 102 through the walking wheel clamping structure 2. Use the friction between the walking wheel and the three groups of test boards 102 to test the wear test of the walking wheel on the test boards 102 of different models, so as to simulate the walking wear test of the walking wheel in a bumpy state and when encountering stones.

[0061] In this article, the following points need to be noted:

[0062] 1. The attached drawings of the embodiments of the present invention only relate to the structures involved in the embodiments of the present invention. Other structures can refer to the general design.

[0063] 2. Without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0064] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. An abrasion test device for suitcase walking wheels in a simulated complex environment, comprising: Equipment frame (1), traveling wheel clamping structure (2) and pressing plate (3); It is characterized in that three groups of cavities (101) are provided at the inner bottom end of the equipment frame (1), and support frames (1011) are respectively provided at the upper side ends of the cavities (101), and a test plate (102) is supported and installed through the support frames (1011); The traveling wheel clamping structure (2) includes a first cartridge (201), a first clamping plate (202), a plug post (203), a second clamping plate (204), a second cartridge (205), a limit baffle (206), a lower connecting plate (207), an upper connecting plate (208) and a connecting rod (209); A first clamping plate (202) is provided at the inner end of the first cartridge (201), and a first concave ring slot (2011) is provided at the outer end of the first cartridge (201). The first cartridge (201) is rotationally clamped on the lower connecting plate (207) through the first concave ring slot (2011). A limit baffle (206) is provided at the inner end of the second cartridge (205), and a second concave ring slot (2051) is provided at one end of the second cartridge (205) close to the limit baffle (206). The second cartridge (205) is also rotationally clamped on the lower connecting plate (207) through the second concave ring slot (2051). A second clamping plate (204) is installed on the plug post (203), and the outer end of the plug post (203) is slidably inserted into the second cartridge (205). The lower connecting plate (207) is of an inverted L-shaped structure, and the connecting rod (209) slides upward through the upper ends of two groups of lower connecting plates (207) respectively, is sleeved with a buffer spring (2091), and passes through the outer end of the upper connecting plate (208) and is fixed by a nut; Reciprocating lead screws (103) and guide slide bars (104) are respectively installed at the front and rear ends of the upper part inside the equipment frame (1), and both ends of the reciprocating lead screws (103) and the guide slide bars (104) are respectively inserted into bearing seats, and the bearing seats are fixedly connected to the inner wall of the equipment frame (1). A slider (1031) is meshed and sleeved on the reciprocating lead screw (103), and a guide cylinder (1041) is slidably sleeved on the guide slide bar (104); The pressing plate (3) is arranged at the inner upper end of the equipment frame (1) and is attached to the upper connecting plate (208). Four groups of connecting guide rods (301) are fixedly connected to the pressing plate (3). The four groups of connecting guide rods (301) respectively slide upward through the equipment frame (1) and are sleeved with return springs (3011); The test plates (102) are divided into three different models, which are a wear test plate in a horizontal shape, a wear test plate with strip-shaped protrusions, and a wear test plate with frustum-shaped protrusions from right to left in sequence; A second driving motor (2082) is also installed on the upper connecting plate (208), and the second driving motor (2082) is connected to a connecting shaft (2052) at the outer end of the second cartridge (205) through a transmission belt; Four groups of the connecting guide rods (301) are respectively inlaid with scale rulers; two groups of threaded cylinders (105) are inlaid at the top end of the equipment frame (1), and threaded adjusting rods (302) are respectively connected in the two groups of threaded cylinders (105) by threads, and the lower ends of the threaded adjusting rods (302) are attached to the pressing plate (3).

2. The abrasion test equipment for luggage walking wheels in a simulated complex environment according to claim 1, wherein: Both ends of the reciprocating lead screw (103) are respectively provided with optical axis structures, and a first driving motor (106) at one end of the top of the equipment frame (1) is connected to the optical axis structure at one end of the reciprocating lead screw (103) through a transmission belt.

3. The abrasion test equipment for luggage walking wheels in a simulated complex environment according to claim 1, characterized in that: One circle of conical clamping thorns is respectively arranged on the opposite surfaces of the first clamping plate (202) and the second clamping plate (204).

4. An abrasion test device for luggage walking wheels in a simulated complex environment according to claim 1, characterized in that: One end of the inserting column (203) inserted into the second cartridge (205) is provided with strip grooves (2031) for upper and lower alignment, and the clamping columns (2061) at the upper and lower ends inside the limit baffle (206) are respectively clamped into the strip grooves (2031).

5. An abrasion test device for a luggage walking wheel in a simulated complex environment according to claim 4, characterized in that: A clamping spring (2032) is also sleeved on the inserting column (203), the clamping spring (2032) is arranged between the second clamping plate (204) and the limit baffle (206), and the inner end of the inserting column (203) is inserted into the first cartridge (201).

6. The abrasion test equipment for the walking wheels of a luggage case in a simulated complex environment according to claim 1, wherein: Four groups of U-shaped frames (2081) are also connected to the top end of the upper connecting plate (208), the four groups of U-shaped frames (2081) are arranged in pairs relatively, and two groups of through strip holes are respectively arranged on the U-shaped frames (2081). The sliders (1031) and the connecting plates on the outer sides of the guide cylinders (1041) are respectively inserted into two groups of opposite U-shaped frames (2081), and are connected to the through holes on the connecting plates by bolts passing through the strip holes.

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