Collision impact testing device for electric bicycle shell plastic part

Abstract

The utility model provides an electric bicycle shell plastic part collision impact testing device. Supporting columns are arranged on the periphery of the bottom of a testing table in a welded mode. The bottom periphery of the plastic part supporting block is connected to one side of the top end of the testboard through bolts; the periphery of the bottom of the inverted-T-shaped base is connected to the side, away from the plastic part supporting block, of the top end of the testing table through bolts. The transverse rods are arranged on the side, close to the plastic part supporting block, of the top of the inverted-T-shaped base at equal intervals through welding. The impact sleeve is arranged right above the plastic part supporting block; the falling ball impact rod penetrates through the center of the impact sleeve; the limit test module is arranged on the top of the impact sleeve. An electric bicycle shell plastic part sample subjected to injection molding is placed at the top of the plastic part supporting block, the handle is held, the falling ball impact rod is moved upwards to a specific height along the key groove, the handle is loosened, the falling ball impact rod freely falls to impact the electric bicycle shell plastic part, and whether the electric bicycle shell plastic part is damaged or not is directly observed.

Description

Technical Field

[0001] The utility model relates to the detection field, in particular to the technical field of impact detection of plastic parts of an electric bicycle shell, and specifically is a collision impact testing device for plastic parts of an electric bicycle shell. Background Art

[0002] Before processing the electric bicycle shell, an impact test is required to simulate whether the shell will be destructively damaged after being hit, so as to detect whether the strength of each area of ​​the designed electric bicycle shell plastic parts meets the standards. It is used to determine whether the materials and processing technology used in the processing of the electric bicycle shell need to be modified. It is necessary to design a falling ball impact simulation collision test device to detect whether the strength of each part of the processed electric bicycle shell meets the standards. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a collision impact test device for electric bicycle shell plastic parts, which is used to solve the difficulties of the prior art.

[0004] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a collision impact test device for electric bicycle shell plastic parts, comprising:

[0005] A test bench 1, wherein support columns 11 are welded around the bottom of the test bench 1;

[0006] A plastic support block 2, wherein the bottom of the plastic support block 2 is connected by bolts on one side of the top of the test bench 1;

[0007] An inverted T-shaped base 3, wherein the bottom of the inverted T-shaped base 3 is connected by bolts and arranged on a side of the top of the test bench 1 away from the plastic component support block 2;

[0008] Cross bars 31, which are arranged at equal intervals on the top of the inverted T-shaped base 3 near the plastic support block 2 by welding;

[0009] An impact sleeve 4, wherein the impact sleeve 4 is arranged directly above the plastic support block 2, and one side of the impact sleeve 4 is connected to the cross bar 31 by welding;

[0010] A falling ball impact rod 5, wherein the falling ball impact rod 5 is inserted in the middle of the impact sleeve 4;

[0011] The limit test module 6 is arranged on the top of the impact sleeve 4 .

[0012] According to a preferred embodiment, the plastic support block 2 is T-shaped, a circular chamfer 21 is provided on the top of the plastic support block 2, and a ball-falling groove 22 is provided in the middle of the top of the plastic support block 2.

[0013] According to the preferred embodiment, a drop hole 41 is provided in the center of the impact sleeve 4, a key slot 42 is provided on the side of the impact sleeve 4 away from the cross bar 31, the bottom of the key slot 42 is connected to the drop hole 41, and a drop height value bar 43 is attached to the outer wall of the impact sleeve 4 on the left or right side of the key slot 42 by glue.

[0014] According to the preferred embodiment, the falling ball impact rod 5 is in an inverted L-shape, and the vertical side of the falling ball impact rod 5 is clamped in the falling hole 41, and the horizontal side of the top of the falling ball impact rod 5 extends to the outside of the impact sleeve 4 through the key slot 42. A handle 51 is provided on the top of the falling ball impact rod 5 away from the falling hole 41, and a groove is provided at the bottom of the falling ball impact rod 5, and a falling ball 52 is interference fit in the groove.

[0015] According to a preferred embodiment, the limit test module 6 includes:

[0016] An elastic pressure groove 61, which is provided in the middle of the top of the impact sleeve 4, and has an inner diameter greater than the aperture of the drop hole 41. One side of the elastic pressure groove 61 is connected to the key groove 42, and a thread 62 is provided on the groove wall at the top of the elastic pressure groove 61;

[0017] A pressing block 63, wherein the pressing block 63 is placed at the bottom of the elastic pressing groove 61;

[0018] A spring 64, the spring 64 being placed on top of the pressing block 63;

[0019] Tighten the pressure cover 65, which is clamped on the top of the elastic pressure groove 61 through threaded engagement, and the bottom of the tightening pressure cover 65 abuts against the top of the spring 64;

[0020] The stop slot 66 is provided on the top of the key slot 42 and on a side away from the falling height value bar 43 . The bottom of the stop slot 66 is communicated with the elastic pressure slot 61 . One side of the stop slot 66 is the same as the key slot 42 .

[0021] According to a preferred embodiment, the outer diameter of the pressing block 63 is larger than the diameter of the drop hole 41 , and the outer diameter of the pressing block 63 is smaller than the inner diameter of the elastic pressing groove 61 .

[0022] According to a preferred embodiment, the outer diameter of the top of the screw-on pressure cap 65 is the same as the outer diameter of the impact sleeve 4 , and the outer diameter of the bottom of the screw-on pressure cap 65 is the same as the outer diameter of the elastic pressure groove 61 .

[0023] The utility model adopts a test bench, a plastic part support block, an inverted T-shaped base, a crossbar, an impact sleeve, a drop ball impact rod and a limit test module. The injection-molded electric bicycle shell plastic part sample is placed on the top of the plastic part support block, and the handle is held to move the drop ball impact rod upward along the key slot to a specific numerical height on a drop height value bar. The handle is released and the drop ball impact rod freely falls and hits the electric bicycle shell plastic part area just above the drop ball impact slot, so as to directly observe whether the electric bicycle shell plastic part is damaged. The following beneficial effects are achieved:

[0024] (1) Intuitively judge whether the plastic parts of the electric bicycle shell meet the standards;

[0025] The best embodiment of the present invention will be described in more detail below in conjunction with the accompanying drawings so that the features and advantages of the present invention can be easily understood. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The display is a three-dimensional structural schematic diagram of the utility model;

[0027] Figure 2 Shown is an enlarged schematic diagram of the three-dimensional structure of the plastic support block in the utility model;

[0028] Figure 3 Shown is an enlarged schematic diagram of the three-dimensional structure of the impact sleeve in the utility model;

[0029] Figure 4 The display is an enlarged schematic diagram of the three-dimensional structure of the falling ball impact rod in the utility model;

[0030] Figure 5 Shown is an enlarged schematic diagram of the three-dimensional structure of the limit test module in the present utility model;

[0031] Figure 6 The display is an enlarged schematic diagram of the three-dimensional structure of tightening the gland in the present invention;

[0032] Description of symbols

[0033] 1. Test bench; 11. Support column;

[0034] 2. Plastic support block; 21. Arc chamfer; 22. Falling ball into the groove;

[0035] 3. Inverted T-shaped base; 31. Crossbar;

[0036] 4. Impact sleeve; 41. Drop hole; 42. Keyway; 43. Drop height value bar;

[0037] 5. Drop ball impact rod; 51. Handle; 52. Drop ball;

[0038] 6. Limit test module; 61. Elastic pressure groove; 62. Thread; 63. Pressure block; 64. Spring; 65. Tighten the pressure cover; 66. Stopper slot; DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the technical solution of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described in conjunction with the drawings of the specific embodiments of the utility model. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] Compared with the embodiments shown in the drawings, feasible implementations within the scope of protection of the present invention may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0041] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the utility model belongs. The words "first", "second" and similar words used in the specification and claims of the utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not necessarily indicate quantity restrictions. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] The utility model proposes a collision impact test device for electric bicycle shell plastic parts, which is used in the collision impact test process of plastic parts. The utility model does not limit the specifications of the electric bicycle shell plastic parts, but the test bench 1, plastic part support block 2, inverted T-shaped base 3, cross bar 31, impact sleeve 4, falling ball impact rod 5 and limit test module 6 structure are particularly suitable for detecting whether the injection molded electric bicycle shell plastic parts meet the strength requirements and whether the process materials need to be modified.

[0043] In general, the electric bicycle shell plastic part collision impact test device proposed in the utility model mainly includes: a test bench 1, a plastic part support block 2, an inverted T-shaped base 3, a cross bar 31, an impact sleeve 4, a falling ball impact rod 5 and a limit test module 6, among which, you can refer to Figure 1 , which shows the arrangement relationship of the test bench 1, the plastic part support block 2, the inverted T-shaped base 3, the cross bar 31, the impact sleeve 4, the falling ball impact rod 5 and the limit test module 6.

[0044] The electric bicycle shell plastic part collision impact testing device proposed by the utility model, when in use, places the injection molded electric bicycle shell plastic part sample on the top of the plastic part support block 2, holds the handle 51, moves the drop ball impact rod 5 upward along the key slot 42 to a specific numerical height on the drop height value bar 43, releases the handle 51, and the drop ball impact rod 5 freely falls and hits the electric bicycle shell plastic part area just above the drop ball punching slot 22, and directly observes whether the electric bicycle shell plastic part is damaged. If there are only pits and scratches, it means that the test has passed. The test intensity is increased by continuously increasing the moving height of the drop ball impact rod 5 until the detection area is destroyed to obtain the approximate parameters of the maximum impact force that the detection area can withstand, and the bicycle shell plastic part sample is tested around and in the middle in turn. Finally, if the normal drop test cannot destroy the test area, it is only necessary to hold the handle 51 to move the drop ball impact rod 5 upward along the key slot 42 to one side of the stop slot 66, and bend it. The handle 51 rotates the ball-dropping impact rod 5 and clamps one side of the ball-dropping impact rod 5 in the stop slot 66. The electric bicycle shell plastic part to be tested is adjusted to a suitable angle and placed on the plastic part support block 2, so that the electric bicycle shell plastic part can be stably covered on the plastic part support block 2 without manual support to maintain balance. The handle 51 is bent to reset the ball-dropping impact rod 5. The spring 64 resets the push block 63 to make the thrust of the ball-dropping impact rod 5 to fall greater. The impact force of the ball-dropping impact rod 5 can be changed by replacing springs 64 of different specifications until the maximum impact force that the electric bicycle shell plastic part can withstand is obtained. It should be noted that when performing the above-mentioned test, gloves and work clothes need to be worn throughout the process to prevent scratches caused by broken fragments. When the ball-dropping impact rod 5 moves to the stop slot 66 and is tested by using the spring 64 for force application, it is necessary to stand on the left or right side of the test bench 1 when resetting the ball-dropping impact rod 5, and manually hold a baffle between the human body and the plastic part support block 2 to prevent scratches from fragments.

[0045] The bottom of the plastic support block 2 is connected by bolts on one side of the top of the test bench 1. The plastic support block 2 is T-shaped, and a circular chamfer 21 is provided on the top of the plastic support block 2. A ball-falling groove 22 is provided in the middle of the top of the plastic support block 2.

[0046] The above-mentioned impact sleeve 4 is arranged directly above the plastic part support block 2, and one side of the impact sleeve 4 is connected to the cross bar 31 by welding. A drop hole 41 is opened in the middle of the impact sleeve 4, and a key slot 42 is opened on the side of the impact sleeve 4 away from the cross bar 31. The bottom of the key slot 42 is communicated with the drop hole 41, and a drop height value bar 43 is attached to the left or right side of the key slot 42 on the outer wall of the impact sleeve 4 by glue.

[0047] The above-mentioned falling ball impact rod 5 is inserted in the middle of the impact sleeve 4, and the falling ball impact rod 5 is in an inverted L shape. The vertical side of the falling ball impact rod 5 is clamped in the lower falling hole 41, and the horizontal side of the top of the falling ball impact rod 5 passes through the key slot 42 and extends to the outside of the impact sleeve 4. A groove is provided at the bottom of the falling ball impact rod 5, and a falling ball 52 is interference fit in the groove.

[0048] The above-mentioned limit test module 6 is arranged on the top of the impact sleeve 4, and the limit test module 6 includes: an elastic pressure groove 61, a pressure block 63, a spring 64, a tightening pressure cover 65 and a stop groove 66, wherein the elastic pressure groove 61 is opened in the middle of the top of the impact sleeve 4, the inner diameter of the elastic pressure groove 61 is larger than the aperture of the drop hole 41, one side of the elastic pressure groove 61 is connected with the key groove 42, a thread 62 is arranged on the groove wall at the top of the elastic pressure groove 61, and a pressure block 63 is placed at the bottom of the elastic pressure groove 61, the outer diameter of the pressure block 63 is larger than the aperture of the drop hole 41, and the outer diameter of the pressure block 63 is smaller than the inner diameter of the elastic pressure groove 61, so that the pressure block 63 can be pushed by the falling ball impact rod 5 The spring 64 is placed on the top of the pressure block 63, and a tightening cover 65 is provided on the top of the elastic pressure groove 61 through a threaded fit. The bottom of the tightening cover 65 is against the top of the spring 64. The outer diameter of the top of the tightening cover 65 is the same as the outer diameter of the impact sleeve 4, and the outer diameter of the bottom of the tightening cover 65 is the same as the outer diameter of the elastic pressure groove 61. The tightening cover 65 can open and close the elastic pressure groove 61 for easy replacement of the spring 64. The stopping groove 66 is opened on the side of the top of the key groove 42 away from the falling height value bar 43. The bottom of the stopping groove 66 is communicated with the elastic pressure groove 61, and one side of the stopping groove 66 is the same as the key groove 42.

[0049] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A collision impact test device for electric bicycle shell plastic parts, characterized in that: include: A test bench (1), wherein support columns (11) are arranged around the bottom of the test bench (1) by welding; A plastic component support block (2), wherein the bottom of the plastic component support block (2) is connected by bolts on one side of the top of the test bench (1); An inverted T-shaped base (3), wherein the bottom of the inverted T-shaped base (3) is connected by bolts on all sides and is arranged on a side of the top of the test bench (1) away from the plastic component support block (2); Cross bars (31), the cross bars (31) being arranged at equal intervals on one side of the top of the inverted T-shaped base (3) close to the plastic support block (2) by welding; An impact sleeve (4), wherein the impact sleeve (4) is arranged directly above the plastic component support block (2), and one side of the impact sleeve (4) is connected to the cross bar (31) by welding; A falling ball impact rod (5), wherein the falling ball impact rod (5) is inserted in the middle of the impact sleeve (4); A limit test module (6), wherein the limit test module (6) is arranged on the top of the impact sleeve (4).

2. The electric bicycle shell plastic part collision impact testing device according to claim 1, characterized in that: The plastic support block (2) is T-shaped, a circular chamfer (21) is provided at the top of the plastic support block (2), and a ball-falling groove (22) is provided in the middle of the top of the plastic support block (2).

3. The electric bicycle shell plastic part collision impact testing device according to claim 2, characterized in that: A drop hole (41) is provided in the middle of the impact sleeve (4), a key slot (42) is provided on a side of the impact sleeve (4) away from the cross bar (31), the bottom of the key slot (42) is communicated with the drop hole (41), and a drop height value bar (43) is attached to the outer wall of the impact sleeve (4) on the left or right side of the key slot (42) by glue.

4. The electric bicycle shell plastic part collision impact testing device according to claim 3, characterized in that: The ball-dropping impact rod (5) is in an inverted L-shape. A vertical side of the ball-dropping impact rod (5) is clamped in the lower drop hole (41). A horizontal side of the top of the ball-dropping impact rod (5) passes through a key slot (42) and extends toward the outside of the impact sleeve (4). A handle (51) is provided on the top of the ball-dropping impact rod (5) away from the lower drop hole (41). A groove is provided at the bottom of the ball-dropping impact rod (5), and a ball (52) is clamped in the groove in an interference fit.

5. The electric bicycle shell plastic part collision impact testing device according to claim 4, characterized in that: The limit test module (6) comprises: An elastic pressure groove (61), the elastic pressure groove (61) is provided in the middle of the top of the impact sleeve (4), the inner diameter of the elastic pressure groove (61) is larger than the hole diameter of the drop hole (41), one side of the elastic pressure groove (61) is communicated with the key groove (42), and a thread (62) is provided on the groove wall at the top of the elastic pressure groove (61); A pressing block (63), wherein the pressing block (63) is placed at the bottom of the elastic pressing groove (61); A spring (64), the spring (64) being placed on top of the pressing block (63); The tightening cover (65) is screwed on the top of the elastic pressure groove (61) by threaded engagement, and the bottom of the tightening cover (65) abuts against the top of the spring (64); A stop slot (66) is provided on a side of the top of the key slot (42) away from the falling height value bar (43), the bottom of the stop slot (66) is communicated with the elastic pressure slot (61), and one side of the stop slot (66) is the same as the key slot (42).

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