Shell compression resistance testing device

Abstract

The utility model discloses a shell compression resistance testing device which comprises a base, vertical frames are symmetrically and fixedly connected to the base, second limiting sliding grooves are formed in the vertical frames, a transverse frame is arranged between the two vertical frames, second limiting sliding blocks are fixedly connected to the two ends of the transverse frame, and the second limiting sliding blocks are in sliding fit with the second limiting sliding grooves. A sliding rod is installed in the transverse frame in a sliding mode, a connecting threaded hole is formed in the lower end of the sliding rod, a connecting stud is installed in the connecting threaded hole in a threaded mode, a testing head is fixedly connected to the lower end of the connecting stud, an installation base is fixedly connected to the upper end of the sliding rod, and a limiting screw rod is fixedly connected to the upper face of the installation base. By starting the driving motor, the testing head can be driven to move upwards and then move downwards quickly to hit the equipment shell to carry out dynamic pressure bearing capacity testing, the testing head can also press the equipment shell in a static state directly to carry out static pressure testing on the equipment shell, and the anti-pressure capacity of the equipment shell can be detected more effectively and comprehensively.

Description

Technical Field

[0001] This utility model relates to a pressure resistance testing device, and more particularly to a shell pressure resistance testing device. Background Technology

[0002] The device housing is an important component of medical devices, providing physical support and structural stability for the internal structure, circuit boards and other key components, ensuring the normal operation of the device. The housing is usually made of durable materials with a certain degree of strength and corrosion resistance.

[0003] For example, Chinese Patent Publication No. CN221945772U discloses a medical device shell compression resistance testing device, which includes a testing device body and a timer disposed outside the testing device body. A movable plate is slidably connected to the testing device body, and a drive mechanism for pushing the movable plate up and down is provided on the testing device body. A movable rod is slidably connected to the movable plate, and a spring is connected to the outer wall of the movable rod. This medical device shell compression resistance testing device, through the rotation of a cam, causes the movable rod to drive the connecting plate to reciprocate under the elastic action of the spring, thereby causing the pressure plate to continuously impact the outer wall of the shell, thus causing damage to the medical device shell. When the shell breaks, the timer can be paused. By conducting a destructive test on the shell, and simultaneously counting the duration of shell destruction by the timer, the deformation and rupture of the shell during the pressure process can be observed simultaneously, thereby evaluating the compression resistance performance of the shell and greatly improving the accuracy of the shell compression resistance results.

[0004] The aforementioned existing medical device housing compression resistance testing device has some problems. First, different materials of the equipment housing require different test pressures, and the downward pressure applied by the spring cannot be changed. As a result, it is impossible to measure the compression resistance of housings made of different materials as needed. Utility Model Content

[0005] The purpose of this invention is to provide a shell compression testing device to solve the existing problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a shell compression testing device, comprising a base, on which uprights are symmetrically fixed, and a second limiting groove is provided in the uprights. A crossbar is provided between the two uprights, and a second limiting slider is fixed at both ends of the crossbar. The second limiting slider slides are slidably engaged with the second limiting groove. A sliding rod is slidably installed in the crossbar, and a connecting threaded hole is provided at the lower end of the sliding rod. A connecting stud is threaded in the connecting threaded hole, and a test head is fixed at the lower end of the connecting stud. A mounting base is fixed at the upper end of the sliding rod, and a limiting screw is fixed on the mounting base. A counterweight ring is sleeved on the limiting screw.

[0007] Preferably, the base is provided with symmetrical first limiting grooves, a first limiting slider is slidably installed in the first limiting groove, and a clamp is fixedly connected to the first limiting slider.

[0008] Preferably, a bidirectional threaded rod is rotatably installed inside the base, a first motor is fixedly connected to one side of the base, the output end of the first motor is fixedly connected to the bidirectional threaded rod, and a first threaded through hole is opened in the first limiting slider, the first threaded through hole being threadedly engaged with the bidirectional threaded rod.

[0009] Preferably, a second threaded rod is rotatably installed in the second limiting groove on one side, and a second motor is fixedly connected to the top of the upright, with the output end of the second motor fixedly connected to the second threaded rod.

[0010] Preferably, a second threaded through hole is provided in the second limiting slider on one side, and the second threaded through hole is threadedly engaged with the second threaded rod.

[0011] Preferably, a drive motor is fixedly connected to the crossbeam via a motor bracket, a rotating disk is fixedly connected to the output end of the drive motor, an eccentric shaft is fixedly connected to one side of the rotating disk near its edge, an interference plate is fixedly connected to the front of the sliding rod, and the interference plate cooperates with the eccentric shaft.

[0012] Preferably, a fixing nut is threaded onto the limiting screw.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By starting the drive motor, the test head can be moved up and then down rapidly to strike the equipment casing for dynamic pressure resistance testing. Alternatively, the test head can be made to statically press down on the equipment casing for static pressure testing, which can more effectively and comprehensively detect the pressure resistance of the equipment casing.

[0015] 2. By unscrewing the fixing nut, the restriction on the counterweight ring can be removed, and the number of counterweight rings can be adjusted as needed, so that the test pressure can be adjusted according to the material and design requirements of the outer shell. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 This is a schematic diagram of the clamping plate structure of this utility model;

[0019] Figure 4 This is a partial structural schematic diagram of the present invention.

[0020] In the diagram: 1. Base; 101. First limiting slide groove; 102. Bidirectional threaded rod; 103. First motor; 2. Clamping plate; 201. First limiting slider; 202. First threaded through hole; 3. Stand; 301. Second limiting slide groove; 302. Second threaded rod; 303. Second motor; 4. Horizontal frame; 401. Second limiting slider; 402. Second threaded through hole; 403. Drive motor; 404. Rotary disk; 405. Eccentric shaft; 5. Sliding rod; 501. Interference plate; 502. Mounting base; 503. Limiting screw; 504. Counterweight ring; 505. Fixing nut; 506. Connecting threaded hole; 507. Connecting stud; 508. Test head. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a shell pressure resistance testing device, including a base 1, on which uprights 3 are symmetrically fixed, and a second limiting groove 301 is opened in the uprights 3. A cross frame 4 is arranged between the two uprights 3. A second limiting slider 401 is fixed at both ends of the cross frame 4. The second limiting slider 401 slides in cooperation with the second limiting groove 301. A sliding rod 5 is slidably installed in the cross frame 4. A connecting threaded hole 506 is opened at the lower end of the sliding rod 5. A connecting stud 507 is threaded in the connecting threaded hole 506. A test head 508 is fixed at the lower end of the connecting stud 507. A mounting base 502 is fixed at the upper end of the sliding rod 5. A limiting screw 503 is fixed on the mounting base 502. A counterweight ring 504 is sleeved on the limiting screw 503.

[0023] In this embodiment, by placing the housing of the equipment to be tested on the base 1, the horizontal frame 4 and the vertical frame 3 are slidably connected together due to the sliding engagement of the second limiting slider 401 and the second limiting groove 301. The horizontal frame 4 is adjusted to a suitable height so that the connecting stud 507 abuts against the equipment housing. An appropriate number of counterweight rings 504 are then fitted onto the limiting screw 503. The counterweight rings 504 transmit weight to the sliding rod 5 through the mounting base 502, thereby using the connecting stud 507 to press down on the equipment housing, performing a static pressure test on the equipment housing. The dynamic pressure resistance of the equipment housing also needs to be tested. When the force is applied, the sliding rod 5 can be moved upwards. Then, the sliding rod 5 is released. Under the action of gravity, the sliding rod 5 will quickly move downwards and strike the equipment shell to perform a dynamic pressure resistance test. This test can more effectively and comprehensively detect the pressure resistance of the equipment shell. At the same time, the number of counterweight rings 504 can be adjusted to adjust the downward force of the test as needed. This test is used to detect the pressure resistance of the shell of equipment made of different materials. Meanwhile, the test head 508 is installed at the lower end of the sliding rod 5 using the threaded engagement of the connecting stud 507 and the connecting threaded hole 506. The test head 508 of appropriate shape and size can be selected as needed.

[0024] To achieve the purpose of clamping and fixing the outer shell of the equipment and adjusting the height of the crossbeam 4, the device adopts the following technical solution: A first limiting groove 101 is symmetrically opened on the base 1. A first limiting slider 201 is slidably installed in the first limiting groove 101. A clamping plate 2 is fixedly connected to the first limiting slider 201. A bidirectional threaded rod 102 is rotatably installed in the base 1. A first motor 103 is fixedly connected to one side of the base 1. The output end of the first motor 103 is fixedly connected to the bidirectional threaded rod 102. A first threaded through hole 202 is opened in the first limiting slider 201. The first threaded through hole 202 is threadedly engaged with the bidirectional threaded rod 102. A second threaded rod 302 is rotatably installed in a second limiting groove 301 on one side. A second motor 303 is fixedly connected to the upright 3. The output end of the second motor 303 is fixedly connected to the second threaded rod 302. A second threaded through hole 402 is opened in a second limiting slider 401 on one side. The second threaded through hole 402 is threadedly engaged with the second threaded rod 302.

[0025] Starting the first motor 103 can drive the bidirectional threaded rod 102 to rotate. The bidirectional threaded rod 102 is threadedly engaged with the first threaded through hole 202. The rotation of the bidirectional threaded rod 102 can drive the first limiting slider 201 to move. The movement of the first limiting slider 201 can drive the clamping plate 2 to move, thereby adjusting the distance between the two clamping plates 2. The clamping plate 2 is used to clamp and fix the equipment shell. Starting the second motor 303 can drive the second threaded rod 302 to rotate. The second threaded rod 302 is threadedly engaged with the second threaded through hole 402. The rotation of the second threaded rod 302 can drive the second limiting slider 401 to move. The movement of the second limiting slider 401 can drive the cross frame 4 to move, thereby adjusting the height of the cross frame 4.

[0026] In order to achieve the purpose of lifting the sliding rod 5, the device adopts the following technical solution: a drive motor 403 is fixedly connected to the cross frame 4 via a motor bracket, a rotating disk 404 is fixedly connected to the output end of the drive motor 403, an eccentric shaft 405 is fixedly connected to one side of the rotating disk 404 near the edge, an interference plate 501 is fixedly connected to the front of the sliding rod 5, the interference plate 501 and the eccentric shaft 405 cooperate with each other, and a fixing nut 505 is threaded on the limiting screw 503.

[0027] By starting the drive motor 403, the rotating disk 404 can be rotated. The rotation of the rotating disk 404 can drive the eccentric shaft 405 to rotate in a circle. The eccentric shaft 405 cooperates with the interference plate 501. During the rotation and upward movement of the interference plate 501, the interference plate 501 will abut against the bottom of the interference plate 501, thereby lifting the sliding rod 5. When the eccentric shaft 405 rises to the highest point, the eccentric shaft 405 will rotate downward and separate from the interference plate 501. The interference plate 501 loses the support of the eccentric shaft 405 and will fall instantly under the action of gravity, thereby causing the test head 508 to hit the surface of the equipment shell. After the eccentric shaft 405 rotates one revolution, the above operation will be repeated, thereby cyclically driving the sliding rod 5 to rise and fall, and repeatedly conducting the impact test on the equipment shell.

[0028] The working principle and usage process of this utility model are as follows: During use, the outer casing of the device to be tested is placed on the base 1. The first motor 103 is started to drive the bidirectional threaded rod 102 to rotate. The rotation of the bidirectional threaded rod 102 causes the two clamping plates 2 to move closer together, thereby clamping and fixing the outer casing of the device onto the base 1. Then, according to the testing requirements, the number of counterweight rings 504 is adjusted to adjust the testing pressure. The second motor 303 is started to move the crossbeam 4, causing the test head 508 to press against the outer casing of the device, and the sliding rod 5 to move upward a certain distance relative to the crossbeam 4. At this time, the test head 508 will press down on the outer casing of the device to perform a static pressure test. The drive motor 403 is started to drive the eccentric shaft 405 to rotate in a circle. The eccentric shaft 405 can drive the sliding rod 5 to move upward and then quickly fall, causing the test head 508 to strike the outer casing of the device to perform a dynamic pressure resistance test.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shell compression testing apparatus comprising a base (1) characterised in that: The base (1) is symmetrically fixed with uprights (3). The uprights (3) have a second limiting groove (301) inside. A crossbar (4) is set between the two uprights (3). The two ends of the crossbar (4) are fixed with second limiting sliders (401). The second limiting sliders (401) and the second limiting groove (301) slide together. A sliding rod (5) is slidably installed inside the crossbar (4). The lower end of the sliding rod (5) has a connecting threaded hole (506). A connecting stud (507) is threaded inside the connecting threaded hole (506). A test head (508) is fixedly connected to the lower end of the connecting stud (507). A mounting base (502) is fixedly connected to the upper end of the sliding rod (5). A limiting screw (503) is fixedly connected to the mounting base (502). A counterweight ring (504) is sleeved on the limiting screw (503).

2. A compression testing apparatus for a housing as claimed in claim 1, wherein: The base (1) is symmetrically provided with a first limiting groove (101), and a first limiting slider (201) is slidably installed in the first limiting groove (101). A clamp (2) is fixedly connected to the first limiting slider (201).

3. A compression testing apparatus for a housing as claimed in claim 2, wherein: A bidirectional threaded rod (102) is rotatably installed inside the base (1). A first motor (103) is fixedly connected to one side of the base (1). The output end of the first motor (103) is fixedly connected to the bidirectional threaded rod (102). A first threaded through hole (202) is opened inside the first limiting slider (201). The first threaded through hole (202) is threadedly engaged with the bidirectional threaded rod (102).

4. The crush testing apparatus of claim 1, wherein: A second threaded rod (302) is rotatably installed in the second limiting slide groove (301) on one side, and a second motor (303) is fixedly connected to the top of the stand (3). The output end of the second motor (303) is fixedly connected to the second threaded rod (302).

5. A compression testing apparatus for a housing as claimed in claim 4, wherein: A second threaded through hole (402) is provided in the second limiting slider (401) on one side, and the second threaded through hole (402) is threadedly engaged with the second threaded rod (302).

6. The crush testing apparatus of claim 1, wherein: A drive motor (403) is fixedly connected to the cross frame (4) via a motor bracket. A rotating disk (404) is fixedly connected to the output end of the drive motor (403). An eccentric shaft (405) is fixedly connected to one side of the rotating disk (404) near the edge. An interference plate (501) is fixedly connected to the front of the sliding rod (5). The interference plate (501) and the eccentric shaft (405) cooperate with each other.

7. The crush testing apparatus of claim 1, wherein: A fixing nut (505) is threaded onto the limiting screw (503).

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