Spring load testing device for heavy suspension

Abstract

The utility model discloses a heavy suspension spring load testing device, which comprises a test board, the test board comprises a top plate, and a pressure applying device is fixedly arranged in the middle of the top plate; a fixing assembly is arranged under the pressure applying device, and an adjusting assembly is arranged on the outer side of the fixing assembly. The fixing assembly comprises a fixing empty shell, a rotating disc is rotationally connected to the interior of the fixing empty shell, a plurality of sliding blocks are slidably connected to the rotating disc, moving rods are fixedly connected to the outer sides of the sliding blocks, and clamping plates are fixedly connected to the ends, extending out of the fixing empty shell, of the moving rods. Wherein the adjusting assembly comprises a screw rod rotationally arranged on one side of the fixed empty shell, the external thread of the screw rod is in sliding connection with a threaded sleeve, and the threaded sleeve is fixedly connected with one side of the fixed empty shell; the clamping plate can effectively wrap the spring under the driving of electric power to achieve rapid fixing, manual repeated screwing of a screw button for control is avoided, and time and labor are saved.

Description

Technical Field

[0001] This utility model relates to the field of automotive suspension spring testing technology, specifically to a heavy-duty suspension spring load testing device. Background Technology

[0002] Automotive suspension mainly consists of three parts: elastic elements, guiding devices, and shock absorbers. As the only elastic connection between the chassis and the axle, the elastic element bears and transmits vertical loads, mitigating and suppressing impacts caused by uneven road surfaces. In passenger cars, the front and rear suspensions primarily use coil springs as the suspension elastic elements. These coil springs need to meet performance requirements such as stiffness, durability, and creep resistance. The performance of the elastic element is closely related to the overall vehicle comfort and handling stability, directly affecting the vehicle's quality. Therefore, accurately testing the stiffness of the coil springs is crucial for the overall vehicle design and development.

[0003] CN207798398U discloses a testing device for automotive suspension springs, including a lower base and multiple adjustment mechanisms. The lower base includes a base plate and a side plate erected at the edge of the base plate. Multiple adjustment mechanisms are spaced apart around the side plate. Each adjustment mechanism includes a lifting mechanism, a cantilever, and a spring support block. The spring support block supports the lower end of the automotive suspension spring to be tested. The lifting mechanism is connected to the outside of the side plate. The outer end of the cantilever is connected to the lifting mechanism, and the inner end of the cantilever extends into the inside of the side plate. The spring support block is slidably connected to the inner end of the cantilever and can rotate relative to the cantilever. The cantilever can be raised and lowered vertically under the push of the lifting mechanism, effectively fixing the automotive suspension spring to be tested on the lower base. However, this patent still has the following problems in actual use:

[0004] The aforementioned device, including existing equipment, requires turning a knob when limiting and fixing the spring. Furthermore, due to the numerous fixing directions, too many knobs need to be turned during fixing, making it inconvenient to use and quite time-consuming.

[0005] A test device for heavy-duty suspension spring loads is proposed to address the problems mentioned above. Utility Model Content

[0006] The purpose of this utility model is to provide a heavy-duty suspension spring load testing device to solve the problem mentioned in the background art, including the existing equipment, that when fixing the spring, it is necessary to turn the knob, and because there are too many fixing directions, there are too many knobs that need to be turned when fixing, which is inconvenient to use and wastes a lot of time.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a heavy-duty suspension spring load testing device, comprising a test bench, the test bench comprising a base, a plurality of support columns fixedly connected to the top surface of the base, the top ends of the support columns being fixedly connected to the same top plate, and a pressure application device fixedly installed in the middle of the top plate;

[0008] A fixing component is provided directly below the pressure application device, and an adjustment component is provided on the outside of the fixing component;

[0009] The fixing component includes a fixed shell, a rotating disk is rotatably connected inside the fixed shell, a spiral track is fixedly connected to the top and bottom surfaces of the rotating disk, a plurality of sliders are slidably connected on the spiral track, a moving rod is fixedly connected to the outside of the sliders, and a clamping plate is fixedly connected to one end of the moving rod that extends out of the fixed shell.

[0010] The rotating disk has a gear ring fixedly connected to its bottom edge, and a first motor is fixedly connected to one side of the bottom of the fixed shell. The output end of the first motor extends into the fixed shell and is fixedly connected to a micro gear, which meshes with the gear ring.

[0011] The adjusting component includes a screw that is rotatably disposed on one side of the fixed housing. The screw has a threaded sleeve that is slidably connected to its external thread, and the threaded sleeve is fixedly connected to one side of the fixed housing.

[0012] Preferably, the top and bottom surfaces of the fixed shell are provided with a plurality of sliding grooves, and the sliding grooves are slidably connected to the moving rod.

[0013] Preferably, both the fixed shell and the rotating disk have a central groove in the middle, and the clamping plate moves within the central groove.

[0014] Preferably, the sliders are evenly distributed in a circular pattern, and a placement groove is provided in the center of the top surface of the test platform.

[0015] Preferably, the adjustment assembly further includes a sliding column disposed on the side of the fixed housing away from the screw, and a sliding sleeve is slidably connected to the outside of the sliding column. The sliding sleeve and the threaded sleeve are respectively fixedly connected to the outside of the fixed housing.

[0016] Preferably, the top end of the sliding column is fixedly connected to the top plate, and the bottom end of the sliding column is rotatably connected to the base.

[0017] Preferably, a second motor is fixedly connected to one side of the top surface of the top plate, and the output end of the second motor is rotatably connected to the top plate and the screw.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: This heavy-duty suspension spring load testing device can effectively wrap the spring under electric power to achieve rapid fixation, avoiding repeated manual tightening of screws, saving time and effort. Furthermore, it can maintain the spring in the middle position during compression under control, preventing the spring from flying out laterally due to compression deformation, thus increasing safety. The specific details are as follows:

[0019] 1. First, place the spring into the placement slot through the central slot. Then, start the first motor to rotate the micro gear, which in turn drives the gear ring to rotate the rotating disk. This causes the spiral track to move the slider inside the slide groove. As a result, the clamping plate can move closer to and fit against the side of the spring under the drive of the moving slide groove. Since the clamping plate can effectively wrap the spring, the spring can be quickly fixed, avoiding the need for repeated manual tightening of the screw. This achieves automatic fixing. At the same time, when the rotating disk stops rotating, the slider on the spiral track cannot move, which has the characteristic of automatic positioning.

[0020] 2. When the pressure device is initially activated to compress the spring, the spring will contract. At this time, the second motor is activated to make the screw rotate, and the fixed shell moves vertically through the threaded sleeve. Based on the observation of the spring, the clamping plate always moves vertically against the outside of the spring, keeping it in the middle of the spring, so as to avoid the spring from flying out to the side due to compression deformation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the front cross-section structure of this utility model;

[0022] Figure 2 A top-view diagram of the fixed empty shell structure;

[0023] Figure 3 This is a schematic diagram of the rotating top surface structure;

[0024] Figure 4 This is a schematic diagram of the rotating bottom structure;

[0025] Figure 5 This is a schematic diagram of the installation structure of the moving rod and the clamping plate.

[0026] In the diagram: 1. Test bench; 101. Base; 102. Support column; 103. Top plate; 104. Pressure device; 2. Fixing assembly; 201. Fixing shell; 202. Rotary disk; 203. Spiral track; 204. Slider; 205. Moving rod; 206. Clamping plate; 207. Slide groove; 208. Center groove; 209. Gear ring; 210. First motor; 211. Micro gear; 212. Placement groove; 3. Adjusting assembly; 301. Screw; 302. Sliding column; 303. Threaded sleeve; 304. Sliding sleeve; 305. Second motor. Detailed Implementation

[0027] 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.

[0028] Please see Figure 1 - Figure 5 The present invention provides a technical solution: a heavy suspension spring load testing device, including a test bench 1, the test bench 1 including a base 101, a plurality of support columns 102 fixedly connected to the top surface of the base 101, the top of the support columns 102 being fixedly connected to the same top plate 103, and a pressure applying device 104 fixedly installed in the middle of the top plate 103; the pressure applying device 104 is prior art and consists of a press and a pressure sensor.

[0029] A fixing component 2 is provided directly below the pressure application device 104, and an adjustment component 3 is provided on the outside of the fixing component 2;

[0030] The fixing component 2 includes a fixed shell 201, a rotating disk 202 is rotatably connected inside the fixed shell 201, a spiral track 203 is fixedly connected to the top and bottom surfaces of the rotating disk 202, a plurality of sliders 204 are slidably connected on the spiral track 203, a moving rod 205 is fixedly connected to the outside of the slider 204, and a clamping plate 206 is fixedly connected to one end of the moving rod 205 extending out of the fixed shell 201; the upper moving rod 205 is fixed to the top surface of the upper slider 204, and the lower moving rod 205 is fixed to the bottom surface of the lower slider 204; the same clamping plate 206 is fixedly connected to both moving rods 205 at the same time, and the trajectories of the two spiral tracks 203 are the same.

[0031] The rotating disk 202 has a gear ring 209 fixedly connected to its bottom edge, and a first motor 210 is fixedly connected to one side of the bottom surface of the fixed shell 201. The output end of the first motor 210 extends into the fixed shell 201 and is fixedly connected to a micro gear 211. The micro gear 211 meshes with the gear ring 209. This device avoids the need for manual repeated turning of the screws to control the device, thus achieving automatic fixing. At the same time, when the rotating disk 202 stops rotating, the slider 204 on the spiral track 203 cannot move, thus having the characteristic of automatic positioning.

[0032] The adjusting component 3 includes a screw 301 rotatably disposed on one side of the fixed housing 201. The screw 301 is slidably connected to a threaded sleeve 303 on its external thread, and the threaded sleeve 303 is fixedly connected to one side of the fixed housing 201.

[0033] The top and bottom surfaces of the fixed shell 201 are provided with a number of sliding grooves 207, which are slidably connected to the moving rod 205. The number of sliding grooves 207 is the same as that of the moving rod 205 and the slider 204, and the sliding grooves 207 are evenly distributed around the circumference.

[0034] Both the fixed shell 201 and the rotating disk 202 have a central groove 208 in the middle, and the clamping plate 206 moves within the central groove 208. The central groove 208 is originally larger than the diameter of the spring, so that the spring can be inserted into it. The clamping plate 206 is an arc-shaped plate.

[0035] Several sliders 204 are evenly distributed in a circular pattern, and a placement groove 212 is provided in the middle of the top surface of the test platform 1.

[0036] The adjusting assembly 3 also includes a sliding column 302 located on the side of the fixed housing 201 away from the screw 301. A sliding sleeve 304 is slidably connected to the outside of the sliding column 302. The sliding sleeve 304 and the threaded sleeve 303 are respectively fixedly connected to the outside of the fixed housing 201. After the spring is placed, the fixed housing 201 drives the clamping plate 206 to the middle of the spring in its normal state, so as to avoid the spring from deforming and popping out in the middle during the initial compression. During the compression and shortening of the spring, the clamping plate 206 is moved slowly to maintain its relative position.

[0037] The top end of the sliding column 302 is fixedly connected to the top plate 103, and the bottom end of the sliding column 302 is rotatably connected to the base 101.

[0038] A second motor 305 is fixedly connected to one side of the top surface of the top plate 103. The output end of the second motor 305 is rotatably connected to the top plate 103 and the screw 301. Both the second motor 305 and the first motor 210 are servo motors and can be directly controlled.

[0039] Working principle: Before using this heavy-duty suspension spring load testing device, it is necessary to check the overall condition of the device to ensure it can operate normally. Figure 1 - Figure 5 As shown, the spring is first placed into the placement slot 212 through the central slot 208. Then, the first motor 210 is started to make the micro gear 211 rotate, and the micro gear 211 drives the gear ring 209 to drive the rotating disk 202 to rotate. This causes the spiral track 203 to drive the slider 204 to slide inside the slide groove 207. As a result, the clamping plate 206 can approach and fit against the side of the spring under the drive of the moving slide groove 207. Since the clamping plate 206 can effectively wrap the spring, the spring can be quickly fixed, avoiding the need for manual repeated turning of the screw, and achieving automatic fixing. At the same time, when the rotating disk 202 stops rotating, the slider 204 on the spiral track 203 cannot move, which has the characteristic of automatic positioning.

[0040] When the pressure device 104 is initially activated to compress the spring, the spring will contract. At this time, the second motor 305 is activated to make the screw 301 rotate, and through the threaded sleeve 303, the fixed shell 201 moves vertically. Based on the observation of the spring, the clamp 206 is always in contact with the outside of the spring and moves vertically, keeping it in the middle of the spring, so as to avoid the spring from flying out to the side due to compression deformation in the middle of the spring.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heavy suspension spring load testing device, comprising a test bench (1), the test bench (1) comprising a base (101), a plurality of support columns (102) fixedly connected to the top surface of the base (101), the top end of the support columns (102) being fixedly connected to the same top plate (103), and a pressure application device (104) fixedly installed in the middle of the top plate (103); Its features are, Also includes: A fixing component (2) is provided directly below the pressure application device (104), and an adjustment component (3) is provided on the outside of the fixing component (2); The fixing component (2) includes a fixing shell (201), a rotating disk (202) is rotatably connected inside the fixing shell (201), a spiral track (203) is fixedly connected to the top and bottom surfaces of the rotating disk (202), a plurality of sliders (204) are slidably connected on the spiral track (203), a moving rod (205) is fixedly connected to the outside of the slider (204), and a clamping plate (206) is fixedly connected to one end of the moving rod (205) that extends out of the fixing shell (201); Among them, a gear ring (209) is fixedly connected to the bottom edge of the rotating disk (202), and a first motor (210) is fixedly connected to one side of the bottom surface of the fixed shell (201). The output end of the first motor (210) extends into the fixed shell (201) and is fixedly connected to a micro gear (211). The micro gear (211) meshes with the gear ring (209). The adjusting component (3) includes a screw (301) rotatably disposed on one side of the fixed housing (201), and a threaded sleeve (303) is slidably connected to the external thread of the screw (301), and the threaded sleeve (303) is fixedly connected to one side of the fixed housing (201).

2. The heavy-duty suspension spring load testing device according to claim 1, characterized in that: The top and bottom surfaces of the fixed shell (201) are provided with a number of sliding grooves (207), and the sliding grooves (207) are slidably connected to the moving rod (205).

3. The heavy-duty suspension spring load testing device according to claim 1, characterized in that: Both the fixed shell (201) and the rotating disk (202) have a central groove (208) in the middle, and the clamping plate (206) moves within the central groove (208).

4. The heavy-duty suspension spring load testing device according to claim 1, characterized in that: Several sliders (204) are evenly distributed in a circular pattern, and a placement groove (212) is provided in the middle of the top surface of the test platform (1).

5. The heavy-duty suspension spring load testing device according to claim 1, characterized in that: The adjustment assembly (3) further includes a slide column (302) disposed on the side of the fixed housing (201) away from the screw (301). A slide sleeve (304) is slidably connected to the outside of the slide column (302). The slide sleeve (304) and the threaded sleeve (303) are respectively fixedly connected to the outside of the fixed housing (201).

6. The heavy-duty suspension spring load testing device according to claim 5, characterized in that: The top end of the sliding column (302) is fixedly connected to the top plate (103), and the bottom end of the sliding column (302) is rotatably connected to the base (101).

7. The heavy-duty suspension spring load testing device according to claim 5, characterized in that: A second motor (305) is fixedly connected to one side of the top surface of the top plate (103). The output end of the second motor (305) is rotatably connected to the top plate (103) and the screw (301).

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