A resistance band detection device

Abstract

This utility model relates to the technical field of testing equipment and discloses a resistance testing device, including a testing device body. An installation plate for supporting testing components is slidably installed inside the testing device body. An installation box for providing a mounting base is fixedly installed at the bottom of the installation plate. A locking component for locking is installed on the outer wall of the installation box. This utility model, by setting the locking component and adopting a mechanical self-locking structure, allows the pin rod to be inserted, with the tip guiding the retaining bead to compress the spring via the movable block two. After the groove is in place, the spring pushes back, causing the retaining bead to accurately engage in the groove, forming a self-locking mechanism, unaffected by electromagnetic interference and suitable for high-frequency testing. The nested sliding design of the movable block one and movable block two provides double guidance and limitation for the retaining bead, improving impact resistance. The pin rod has a pull ring for quick insertion and removal. Locking only requires pushing the pin rod to lock, and unlocking is completed by magnetic attraction via a strong magnetic block, significantly shortening the clamping time.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a resistance testing device. Background Technology

[0002] A resistance testing device is a specialized device for testing the performance of various resistance devices. It is widely used in fields such as machinery manufacturing and automotive parts production. By simulating the stress conditions of the resistance device in actual operation, it evaluates its key performance indicators such as fatigue resistance and stability.

[0003] In the field of automotive parts testing, automotive shock absorber drag units are crucial components affecting the ride comfort and safety of vehicles. Their performance directly impacts the user experience and driving safety. Therefore, accurate and efficient testing of automotive shock absorber drag units is essential. Fatigue testing of automotive shock absorber drag units typically requires specialized testing equipment. The general steps are as follows: First, slide the bottom end of the shock absorber into the testing equipment body, ensuring the top ring of the shock absorber is in its corresponding installation position within the equipment. Then, secure the ring with fixing components to ensure the shock absorber does not shift during testing. Next, start the testing equipment, which performs a fatigue test on the shock absorber according to a preset program, monitoring and recording relevant data in real time. After the test, release the fixing components from the ring, remove the shock absorber from the testing equipment, and complete the entire testing process.

[0004] However, the simplest way to fix the damper in existing damper testing devices is usually by directly using pins. However, this fixing method has poor stability. In high-frequency fatigue tests, the pins are prone to loosening, affecting the testing accuracy and even causing test failure. In order to improve the fixing effect, some devices use bolts for auxiliary positioning. Although this can improve the stability of the fixing, the bolts need to be repeatedly tightened with tools during installation and disassembly, which is cumbersome. This not only prolongs the clamping time of the damper, but also causes the bolts and bolt holes to wear after long-term use, resulting in a decrease in the fixing effect.

[0005] Therefore, a resistance testing device was designed. Utility Model Content

[0006] This utility model addresses the shortcomings of existing technologies by providing a resistance testing device. It solves the problems of existing vibration damping resistance testing devices, which either use simple pin fixing, resulting in poor stability and easy loosening that affects testing, or use bolt-assisted positioning, which, while stable, is cumbersome to operate, has a long clamping time, and low efficiency.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A resistance testing device includes a testing device body, an installation plate for supporting testing components is slidably mounted inside the testing device body, an installation box for providing an installation base is fixedly mounted at the bottom of the installation plate, a locking component for locking function is installed on the outer wall of the installation box, and a pin for locking is slidably mounted on the inner wall of the installation box, the pin engaging with the locking component.

[0009] Preferably, the outer wall of the mounting plate is provided with a placement groove for placing a strong magnetic block, and an elastic rope is fixedly installed on the inner wall of the placement groove. The free end of the elastic rope is fixedly installed with a strong magnetic block for magnetically attracting the locking component.

[0010] Preferably, one end of the pin is fixedly fitted with a pull ring for easy pulling of the pin, and the outer wall of the end of the pin away from the pull ring is provided with a groove for engaging with the locking component.

[0011] Preferably, the locking component includes a housing fixedly mounted on the outer wall of the mounting box, and a bottom cover for sealing is threaded onto the other end of the housing.

[0012] Preferably, the locking component has a first movable block and a second movable block slidably mounted inside it, the second movable block being located inside the first movable block, and the first movable block and the second movable block being able to slide axially within the housing.

[0013] Preferably, the movable block two is elastically connected to the bottom cover by a spring.

[0014] Preferably, the second movable block includes a hollow ring, a circular ring plate, and connecting rods, wherein the hollow ring is fixedly connected to the circular ring plate by a plurality of evenly distributed connecting rods.

[0015] Preferably, the bottom cover has a plurality of retaining beads for locking the pin rod inside, and the plurality of retaining beads are respectively located between the hollow ring and the connecting rod.

[0016] Preferably, the bottom cover and the outer wall of the movable block 1 inside the mounting box and the locking component are respectively provided with a pin groove for the pin rod to pass through, and the pin groove is adapted to the pin rod.

[0017] Preferably, the movable block two and the locking ball in the locking component are both made of iron and can be magnetically attracted to the strong magnetic block. The magnetic attraction of the strong magnetic block can drive the movable block two to move.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This invention features a locking component with a mechanical self-locking structure. When the pin is inserted, the tip guides the retaining bead, which in turn compresses the spring in the second movable block. Once the groove is in place, the spring pushes back, precisely locking the retaining bead into the groove, thus creating a self-locking mechanism unaffected by electromagnetic interference and suitable for high-frequency detection. The nested sliding design of the first and second movable blocks provides double guidance and limitation for the retaining bead, enhancing its impact resistance. The pin has a pull ring for quick insertion and removal. Locking is achieved simply by pushing the pin until it is locked, and unlocking is accomplished by magnetic attraction using a strong magnetic block, eliminating the need for complex tools and significantly reducing clamping time. The strong magnetic block is connected to the placement slot via an elastic cord to prevent loss. The clearance fit between the pin and the pin slot ensures smooth sliding and reduces radial wobble, guaranteeing fixing accuracy. The locking component's outer shell is threaded to the bottom cover, facilitating internal parts replacement and maintenance and extending the equipment's lifespan.

[0020] This invention utilizes a strong magnetic block to magnetically attract ferrous components, achieving unlocking without contacting the internal structure and avoiding mechanical wear. During magnetic attraction, the movable block moves axially in sync, causing the locking ball to quickly disengage from the groove. The unlocking response is rapid and the force is controllable, preventing additional damage to the components. The spring automatically resets after unlocking, ensuring stable operation during cycles. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of a partial explosion structure of the present invention;

[0024] Figure 3 This is a front cross-sectional view of the locking component of this utility model.

[0025] Figure 4 This is a partial cross-sectional structural diagram of the locking component of this utility model;

[0026] Figure 5 This is an exploded structural diagram of the locking component of this utility model.

[0027] Drawing number descriptions: 1. Inspection equipment body; 11. Mounting plate; 111. Placement slot; 2. Mounting box; 21. Mounting slot; 22. Pin slot; 3. Pin rod; 31. Pull ring; 32. Groove; 4. Locking component; 40. Outer shell; 41. Bottom cover; 42. Movable block one; 43. Movable block two; 431. Hollow ring; 432. Circular ring plate; 433. Connecting rod; 44. Spring; 45. Clamping ball; 5. Strong magnetic block; 51. Elastic rope. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings.

[0029] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0030] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0031] It is understood that the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number. Example

[0032] Please see Figure 1-5A resistance testing device includes a testing device body 1. A mounting plate 11 for supporting testing components is slidably installed inside the testing device body 1. A mounting box 2 for providing a mounting base is fixedly installed at the bottom of the mounting plate 11. A locking component 4 for locking is installed on the outer wall of the mounting box 2. A locking pin 3 for engaging with the locking is slidably installed on the inner wall of the mounting box 2. The pin 3 engages with the locking component 4. A placement groove 111 for placing a strong magnetic block 5 is formed on the outer wall of the mounting plate 11. An elastic element is fixedly installed on the inner wall of the placement groove 111. The free end of the rope 51 elastic rope 51 is fixedly equipped with a strong magnet 5 for magnetic attraction of the locking component 4. One end of the pin rod 3 is fixedly equipped with a pull ring 31 for easy pulling of the pin rod 3. The outer wall of the end of the pin rod 3 away from the pull ring 31 has a groove 32 for engaging with the locking component 4. The locking component 4 includes a housing 40 fixedly installed on the outer wall of the mounting box 2. The other end of the housing 40 is threaded with a bottom cover 41 for sealing. Inside the locking component 4, a first movable block 42 and a second movable block 43 are slidably installed. The second movable block 43 is located at the position of the first movable block 42. Inside the housing 40, movable block 42 and movable block 43 can slide axially. Movable block 43 is elastically connected to the bottom cover 41 by a spring 44. The spring 44 can push movable block 43 to reset, ensuring the locking effect of the locking component 4. Movable block 43 includes a hollow ring 431, a circular plate 432, and a connecting rod 433. The hollow ring 431 is fixedly connected to the circular plate 432 by multiple evenly distributed connecting rods 433. The bottom cover 41 is provided with multiple locking beads 45 for locking the pin 3. The multiple locking beads 45 are respectively located in the hollow ring 43. In the middle of the connecting rod 433, the locking ball 45 can cooperate with the connecting rod 433 to lock the pin rod 3; the bottom cover 41 and the outer wall of the movable block 42 in the mounting box 2 and the locking component 4 are respectively provided with pin grooves 22 for the pin rod 3 to pass through. The pin grooves 22 are adapted to the pin rod 3 to ensure that the pin rod 3 can be smoothly inserted and locked; the movable block 43 and the locking ball 45 in the locking component 4 are made of iron and can be magnetically attracted to the strong magnetic block 5. The magnetic attraction of the strong magnetic block 5 can drive the movable block 43 to move, thereby unlocking the locking component 4.

[0033] By setting the locking component 4, when the pin 3 is inserted, its tip contacts the inclined surface of the locking ball 45, which drives the movable block 43 to compress the spring 44. When the groove 32 reaches the position of the locking ball 45, the rebound force of the spring 44 pushes the movable block 43 to reset, so that the locking ball 45 is accurately locked into the groove 32, forming a self-locking mechanism with stable locking performance.

[0034] By setting a pull ring 31 at one end of the pin rod 3, it is easy for operators to quickly insert and remove the pin. The locking and unlocking process does not require complicated tools. When locking, simply push the pin rod 3 to the locked state. When unlocking, it can be achieved by the magnetic attraction of the strong magnetic block 5. This shortens the clamping time of the shock absorber and improves the detection efficiency. In addition, the strong magnetic block 5 is connected to the placement groove 111 by the elastic rope 51, which avoids the loss of parts.

[0035] The pin rod 3 and the pin slot 22 of the mounting box 2 are fitted with a clearance, which ensures smooth sliding of the pin rod 3 and reduces radial wobble. The outer shell 40 of the locking component 4 and the bottom cover 41 are connected by threads, which not only facilitates the replacement and maintenance of internal parts, but also extends the service life of the equipment. The hollow ring 431 of the movable block 2 43 is connected to the ring plate 432 through multiple evenly distributed connecting rods 433. This hollow structure reduces weight while ensuring structural strength, so that the movable block 2 43 is not easily deformed under the repeated action of the spring 44, and ensures the uniform force on the locking ball 45.

[0036] Unlocking is achieved by using the magnetic attraction of the strong magnetic block 5 to the movable block 43 and the locking ball 45. There is no need to directly contact the internal structure of the locking component 4. During the magnetic attraction process, the movable block 43 moves synchronously along the axial direction of the outer shell 40, causing the locking ball 45 to disengage from the groove 32. Unlocking is quick and will not cause additional damage to the pin rod 3 or the locking component 4. The spring 44 is in a compressed state during the unlocking process. It can automatically reset after being pulled out by force or after being rotated at an angle to release the strong magnetic block 5.

[0037] Usage process

[0038] Align the bottom of the car shock absorber with the inlet of the inspection equipment body 1, and smoothly slide it into the inspection equipment body 1. The lifting ring at the top of the shock absorber should be exactly in the mounting groove 21 of the mounting box 2.

[0039] Holding one end of the pin rod 3 with the pull ring 31, align the tip of the pin rod 3 with the pin slot 22 on one side of the mounting box 2, and then smoothly push the pin rod 3 so that it passes through the pin slots 22 on both sides of the mounting box 2 in sequence. During this process, the pin rod 3 will pass through the inner hole of the top lifting ring of the shock absorber, and finally its tip will be inserted into the locking component 4, thereby fixing the lifting ring of the shock absorber in the mounting box 2, completing the installation and fixing of the shock absorber.

[0040] As the tip of the pin 3 continues to penetrate deeper, passing through movable block 42 and movable block 43 in sequence, it will contact the retaining bead 45 inside the locking component 4. Guided by the beveled surface of the pin 3 tip, the retaining bead 45 will move outward, thereby driving movable block 43 to move closer to the bottom cover 41, while simultaneously compressing spring 44. As the pin 3 continues to be inserted, when the groove 32 on the outer wall of the pin 3 moves to the position corresponding to the retaining bead 45, movable block 43 will reset under the elastic force of spring 44, pushing the retaining bead 45 into the groove 32, thus quickly fixing the pin 3 to the mounting box 2 and ensuring that the shock absorber will not loosen during testing.

[0041] After confirming that the shock absorber is securely fixed, start the inspection equipment body 1. The equipment will perform fatigue testing on the automotive shock absorber according to the preset program. During the test, the equipment will monitor and record relevant data in real time.

[0042] After the shock absorber is tested, the strong magnetic block 5 is removed from the placement slot 111 of the mounting plate 11. At this time, the elastic rope 51 connecting the strong magnetic block 5 is in a stretched state. Align the strong magnetic block 5 with the bottom cover 41 of the locking component 4. Since the movable block 43 and the locking ball 45 are both made of iron, they will move towards the strong magnetic block 5 under the magnetic attraction of the strong magnetic block 5. During this process, the movable block 43 squeezes the spring 44 again, causing the spring 44 to compress. The locking ball 45 disengages from the groove 32 of the pin rod 3, releasing the lock on the pin rod 3.

[0043] After unlocking, the pin 3 is pulled out of the pin slot 22 of the mounting box 2 by pulling the pull ring 31 on the pin 3. Finally, the tested shock absorber is taken out from the inspection equipment body 1 to complete the entire testing process.

[0044] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A resistance testing device, characterized in that, The device includes an inspection equipment body (1), an inspection equipment body (1) with a mounting plate (11) for supporting the inspection components slidably installed inside, an installation box (2) for providing an installation base is fixedly installed at the bottom of the mounting plate (11), a locking component (4) for realizing the locking function is installed on the outer wall of the installation box (2), and a pin rod (3) for cooperating with the locking is slidably installed on the inner wall of the installation box (2), and the pin rod (3) is engaged with the locking component (4).

2. The resistance testing device according to claim 1, characterized in that: The outer wall of the mounting plate (11) is provided with a placement groove (111) for placing a strong magnetic block (5). An elastic rope (51) is fixedly installed on the inner wall of the placement groove (111). A strong magnetic block (5) for magnetic attraction operation of the locking component (4) is fixedly installed at the free end of the elastic rope (51).

3. The resistance testing device according to claim 2, characterized in that: One end of the pin (3) is fixedly fitted with a pull ring (31) for easy pulling of the pin (3), and a groove (32) for engaging with the locking component (4) is provided on the outer wall of the end of the pin (3) away from the pull ring (31).

4. The resistance testing device according to claim 3, characterized in that: The locking component (4) includes a housing (40) fixedly mounted on the outer wall of the mounting box (2), and a bottom cover (41) for sealing is threaded onto the other end of the housing (40).

5. The resistance testing device according to claim 4, characterized in that: The locking component (4) has a movable block one (42) and a movable block two (43) slidably mounted inside it. The movable block two (43) is located inside the movable block one (42), and the movable block one (42) and the movable block two (43) can slide axially within the outer shell (40).

6. The resistance testing device according to claim 5, characterized in that: The movable block 2 (43) and the bottom cover (41) are elastically connected by a spring (44).

7. The resistance testing device according to claim 6, characterized in that: The second movable block (43) includes a hollow ring (431), a circular ring plate (432) and a connecting rod (433). The hollow ring (431) is fixedly connected to the circular ring plate (432) through multiple evenly distributed connecting rods (433).

8. The resistance testing device according to claim 7, characterized in that: The bottom cover (41) is provided with a plurality of locking beads (45) for locking the pin rod (3), and the plurality of locking beads (45) are respectively located between the hollow ring (431) and the connecting rod (433).

9. A resistance testing device according to claim 8, characterized in that: The mounting box (2) and the bottom cover (41) and the outer wall of the movable block (42) inside the locking component (4) are respectively provided with a pin groove (22) for the pin rod (3) to pass through, and the pin groove (22) is adapted to the pin rod (3).

10. A resistance testing device according to claim 9, characterized in that: The movable block 2 (43) and the locking ball (45) inside the locking component (4) are both made of iron and can be magnetically attracted to the strong magnetic block (5). The movable block 2 (43) can be moved by the magnetic attraction of the strong magnetic block (5).

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