Automobile steel plate spring rigidity testing device

Abstract

The utility model discloses an automobile steel plate spring rigidity testing device, which relates to the technical field of steel plate spring testing and comprises a base, the top end of the base is fixedly connected with a detection mechanism, the detection mechanism comprises two groups of hydraulic rods, and the top ends of the two groups of hydraulic rods are respectively and fixedly connected with a group of pressure sensors. The top ends of the two groups of pressure sensors are respectively and fixedly connected with a group of cross beams, the tail ends of the two groups of cross beams are respectively and rotatably connected with a group of rotating shafts, a rotating seat is fixedly connected between the two groups of rotating shafts, and the outer wall of the rotating seat is slidably sleeved with a pressing block. According to the utility model, by turning over the cross beam and matching with the telescopic effect of the hydraulic rod, upward pushing or downward pulling force is applied to the steel plate spring, and the performance of the steel plate spring under the condition of different installation modes of a wheel bridge is simulated through different connection positions between the pressing block and the rotating seat; therefore, the detection process and the detection result better fit the state of the steel plate spring under the actual use condition, and the detection data are richer.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel plate spring test technical field, concretely is a kind of automobile steel plate spring stiffness testing device. BACKGROUND

[0002] Steel plate spring is a kind of spring using the elastic deformation of steel plate to realize elastic action, it is usually composed of multiple bending steel plates, has higher stiffness, and the stiffness of steel plate spring is tested in production process, which can help understand its mechanical properties and application range in application.

[0003] The existing patent (announcement number: CN221404637U) discloses a kind of steel plate spring stiffness testing device, including device frame, the left and right ends of the device frame front side inner wall are fixedly connected with arc gear ring, the rear end middle part inner wall of the device frame is fixedly connected with rotating rod, the rotating rod front end is provided with rotating assembly, the rear part of the left and right sides of the top end of the device frame is slidably connected with adjusting block, the front end of the adjusting block is provided with retaining assembly, the top end rear side middle part of the device frame is fixedly connected with receiving block, the receiving block inner wall middle part is rotatably connected with bidirectional screw rod and penetrates left and right sides, the outer wall left and right sides of the bidirectional screw rod are all screw-connected in the bottom end inner wall of adjusting block, it is rotated along with gear in the track of arc gear ring to the adapter frame by the cooperation of arc gear ring, adapter frame, motor, drive rod, gear, to adjust the angle of concave push plate, to realize the stiffness test of different positions of steel plate spring, to have specific understanding of the stiffness of steel plate spring, avoid the problems of deformation and fatigue failure in the process of direct use.

[0004] But the above technical solution still has certain defects, the above technical solution is pushed to steel plate spring by hydraulic rod in the process of using concave push plate and applies upward thrust, but in the actual use process of steel plate spring, steel plate spring will not only bear one side thrust, often two directions of stress will appear, so that steel plate spring is repeatedly bent up and down, and the installation mode of the wheel bridge of the vehicle taken is different from that of steel plate spring, which will also affect the work of steel plate spring, but the above technical solution can only apply unidirectional force to steel plate spring, which leads to the inconsistency between test process and actual use scene, and the consequence of the detection data is one-sided, therefore, an automobile steel plate spring stiffness testing device is proposed. UTILITY MODEL CONTENTS

[0005] Based on this, the utility model aims at providing a kind of automobile steel plate spring stiffness testing device to solve the technical problems proposed in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: A kind of automobile steel plate spring stiffness testing device, including base, the top of base is fixedly connected with detection mechanism, the detection mechanism includes two groups of hydraulic rod, the top of two groups of hydraulic rod is respectively fixedly connected with a group of pressure sensor, the top of two groups of pressure sensor is respectively fixedly connected with a group of crossbeam, the end of two groups of crossbeam is respectively rotatably connected with a group of rotating shaft, two groups of rotating shaft are fixedly connected with rotating seat between, the outer wall of rotating seat is slidably sleeved with pressing block, the top of pressing block is provided with two groups of fixed strips, and the both ends of each group of fixed strips are respectively sleeved with a group of bolt extending to the inside of rotating seat.

[0007] As the preferred technical scheme of the utility model, the end of the rotating shaft inside the crossbeam is provided with a notch, the inner wall of the crossbeam is slidably connected with a bolt, one end of the bolt extends to the inside of the notch, and the other end of the bolt extends to the outside of the rotating seat.

[0008] As the preferred technical scheme of the utility model, the side wall of the bolt is fixedly connected with a return spring, and the end of the return spring is fixedly connected to the inner wall of the rotating seat.

[0009] As the preferred technical scheme of the utility model, the top of the base is fixedly connected with a fixed mechanism extending above the detection mechanism, and the fixed mechanism includes a support.

[0010] As the preferred technical scheme of the utility model, the both ends of the support are fixedly connected to the top of the base, and the outer wall of the support is fixedly connected with a guide rod above the detection mechanism.

[0011] As the preferred technical scheme of the utility model, the inner wall of the guide rod is slidably connected with two groups of sliding blocks, the bottom of each group of sliding blocks is slidably sleeved with two groups of slide poles, one end of the sliding block is fixedly connected with a plug rod, and the two groups of plug rods are mirror image arranged at the bottom of the sliding block.

[0012] As the preferred technical scheme of the utility model, the other end of the slide pole is fixedly connected with a pull ring, and the outer wall of the pull ring is provided with a silica gel coating.

[0013] In summary, the utility model mainly has the following beneficial effects:

[0014] 1. The utility model turns over crossbeam, and cooperates the telescopic effect of hydraulic rod, to exert the force of pushing up or pulling down on steel plate spring, and through the different connection positions between pressing block and rotating seat, the performance of steel plate spring under different installation modes of axle is simulated, so that the detection process and detection result are more close to the state of steel plate spring under actual use condition, so that detection data is more abundant.

[0015] 2. The utility model discloses a fixed steel plate spring can be fixed quickly in the testing process, and the deformation of steel plate spring in the testing process pushes and slides, avoids the both ends of steel plate spring from being fixed dead after the influence time effect. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the front view structure schematic drawing of the utility model;

[0017] Figure 2 It is the fixed mechanism bottom structure schematic drawing of the utility model;

[0018] Figure 3 It is the fixed mechanism bottom structure schematic drawing of the utility model; Figure 2 It is the fixed mechanism bottom structure schematic drawing of the utility model;

[0019] Figure 4 It is the detection mechanism front view structure schematic drawing of the utility model;

[0020] Figure 5 It is the crossbeam cross section structure schematic drawing of the utility model;

[0021] Figure 6 It is the crossbeam and pressure block separation device bottom structure schematic drawing of the utility model;

[0022] Figure 7 It is the pressure block reverse installation structure schematic drawing of the utility model.

[0023] In the drawing: 1, base; 2, detection mechanism; 3, fixed mechanism;

[0024] 201, hydraulic rod; 202, pressure sensor; 203, crossbeam; 204, rotating seat; 205, rotating shaft; 206, pressure block; 207, fixed strip; 208, notch; 209, bolt; 210, return spring;

[0025] 301, support; 302, guide rod; 303, sliding block; 304, sliding rod; 305, plug rod; 306, pull ring. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings of the embodiments of the utility model. The embodiments described below are exemplary and are used for explaining the utility model only, and cannot be understood as the limitation of the utility model.

[0027] The embodiments will be described below according to the overall structure of the utility model.

[0028] A kind of automobile steel plate spring stiffness testing device, as shown in Figures 1 to 7 The bottom 1 top end fixedly connected with detection mechanism 2, detection mechanism 2 includes two groups of hydraulic rod 201, the top of two groups of hydraulic rod 201 is fixedly connected with a group of pressure sensor 202, the top of two groups of pressure sensor 202 is fixedly connected with a group of crossbeam 203, the end of two groups of crossbeam 203 is rotatably connected with a group of rotating shaft 205, two groups of rotating shaft 205 are fixedly connected with rotating seat 204 between, the outer wall of rotating seat 204 is slidably sleeved with pressure block 206, the top of pressure block 206 is provided with two groups of fixed strips 207, the two ends of each group of fixed strips 207 are sleeved with a group of bolt extending to the inside of rotating seat 204, the end of rotating shaft 205 located in the inside of crossbeam 203 is provided with notch 208, the inner wall of crossbeam 203 is slidably connected with latch 209, one end of latch 209 extends to the inside of notch 208, the other end of latch 209 extends to the outside of rotating seat 204, the side wall of latch 209 is fixedly connected with return spring 210, the end of return spring 210 is fixedly connected on the inner wall of rotating seat 204.

[0029] The rotating seat 204 is abutted on the surface of the leaf spring, and then the pressing block 206 is attached to the outer wall of the leaf spring, so that the pressing block 206 is slidably attached to the outer wall of the rotating seat 204, then the bolt on the fixing strip 207 is passed through the inside of the rotating seat 204, and the fixing strip 207 is fixed by using the nut, so that the pressing block 206 is blocked by the fixing strip 207, so that the rotating seat 204 and the pressing block 206 cannot be separated, so that the leaf spring and the rotating seat 204 are connected together. In actual use, the leaf spring is fixed at the bottom end of the vehicle's beam, and the wheel bridge is generally fixed at the bottom end of the leaf spring by U-shaped bolts and the leaf spring. Some wheel bridges are located above the leaf spring and are fixed by U-shaped bolts. The rotating seat 204 is placed at the bottom end of the leaf spring, and the pressing block 206 presses the leaf spring on the rotating seat 204 from above the rotating seat 204. In this state, the scene of the wheel bridge located below the leaf spring is simulated. The rotating block is placed at the top end of the leaf spring, and the pressing block 206 is pressed on the surface of the leaf spring from below. At this time, the scene of the wheel bridge located above the leaf spring is simulated. The hydraulic rod 201 is telescopic to drive the cross beam 203 to rise and fall, thereby driving the rotating seat 204 and the pressing block 206 to rise and fall, so that the leaf spring is subjected to forces in two directions in turn, so that the leaf spring bends in different directions during testing, so that the detection structure is more in line with the real use scene. By pushing the rotating seat 204 to overturn, the contact surface of the rotating seat 204 and the leaf spring can be adjusted according to different detection methods during the process of needing the rotating seat 204 to be attached for testing. By pushing the bolt 209, the bolt 209 slides out of the gap 208 and compresses the reset spring 210. At this time, the rotating shaft 205 can rotate. Push the rotating seat 204 to make the rotating seat 204 overturn by one hundred and eighty degrees, then release the bolt 209, so that the reset spring 210 rebounds to push the bolt 209 to reset. At this time, the bolt 209 is inserted into the gap 208, so that the rotating shaft 205 cannot rotate, thereby limiting the rotating seat 204.

[0030] Please refer to Figure 1 , Figure 2 and Figure 3 , the top end of the base 1 is fixedly connected with a fixed mechanism 3 extending above the detection mechanism 2. The fixed mechanism 3 comprises a support 301, the two ends of the support 301 are fixedly connected to the top end of the base 1, the outer wall of the support 301 is fixedly connected with a guide rod 302 located above the detection mechanism 2, the inner wall of the guide rod 302 is slidably connected with two groups of sliding blocks 303, the bottom end of each group of sliding blocks 303 is slidably sleeved with two groups of sliding rods 304, one end of the sliding block 303 is fixedly connected with a plug rod 305, the two groups of plug rods 305 are mirror image arranged at the bottom end of the sliding block 303, the other end of the sliding rod 304 is fixedly connected with a pull ring 306, and the outer wall of the pull ring 306 is provided with a silica gel coating.

[0031] First pull the pull ring 306, so that the pull rod with the sliding pole 304 in the inner wall of the slider 303 sliding, so that the two groups of plug pole 305 between the spacing increases, and then by inserting the end of the leaf spring into the inside of the slider 303, so that the mounting hole of the end of the leaf spring is aligned with the plug pole 305, then push the plug pole 305, so that the plug pole 305 is inserted into the fixed hole of the end of the leaf spring, so that the slider 303 and leaf spring rotating connection together.

[0032] In use, by turning over the cross beam 203, and cooperate with the telescopic effect of the hydraulic rod 201, so as to exert the force of pushing up or pulling down on the leaf spring, and by the different connection position between the pressing block 206 and the rotating seat 204, simulate the performance of the leaf spring under different installation modes of the axle, so that the detection process and the detection result are more close to the actual use state of the leaf spring, so that the detection data is more abundant, the part not involved in the device is the same as the prior art or can be realized by using the prior art.

[0033] Although the embodiments of the present application have been shown and described, the specific embodiments are only an explanation of the present application, and are not a limitation of the present application, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way, and those skilled in the art can make modifications, replacements and variations of the embodiments without creative contribution after reading the specification, but as long as it is within the scope of the claims of the present application, it is protected by the patent law.

Claims

1. A device for testing the stiffness of automotive leaf springs, comprising a base (1), characterized in that: A detection mechanism (2) is fixedly connected to the top of the base (1). The detection mechanism (2) includes two sets of hydraulic rods (201). A set of pressure sensors (202) is fixedly connected to the top of each of the two sets of hydraulic rods (201). A set of crossbeams (203) is fixedly connected to the top of each of the two sets of pressure sensors (202). A set of rotating shafts (205) is rotatably connected to the ends of each of the two sets of rotating shafts (205). A rotating seat (204) is fixedly connected between the two sets of rotating shafts (205). A pressure block (206) is slidably sleeved on the outer wall of the rotating seat (204). Two sets of fixing strips (207) are provided at the top of the pressure block (206). A set of bolts extending into the interior of the rotating seat (204) is sleeved at both ends of each set of fixing strips (207).

2. The automotive leaf spring stiffness testing device according to claim 1, characterized in that: The rotating shaft (205) has a notch (208) at one end inside the crossbeam (203). A pin (209) is slidably connected to the inner wall of the crossbeam (203). One end of the pin (209) extends into the notch (208), and the other end of the pin (209) extends into the outside of the rotating seat (204).

3. The automotive leaf spring stiffness testing device according to claim 2, characterized in that: A return spring (210) is fixedly connected to the side wall of the pin (209), and the end of the return spring (210) is fixedly connected to the inner wall of the rotating seat (204).

4. The automotive leaf spring stiffness testing device according to claim 1, characterized in that: The top of the base (1) is fixedly connected to a fixing mechanism (3) extending above the detection mechanism (2), and the fixing mechanism (3) includes a bracket (301).

5. The automotive leaf spring stiffness testing device according to claim 4, characterized in that: The two ends of the bracket (301) are fixedly connected to the top of the base (1), and the outer wall of the bracket (301) is fixedly connected to a guide rod (302) located above the detection mechanism (2).

6. The automotive leaf spring stiffness testing device according to claim 5, characterized in that: The inner wall of the guide rod (302) is slidably connected to two sets of sliders (303). Each set of sliders (303) has two sets of sliding rods (304) slidably sleeved at the bottom end. One end of the slider (303) is fixedly connected to an insert rod (305). The two sets of insert rods (305) are mirror images of each other at the bottom end of the slider (303).

7. The automotive leaf spring stiffness testing device according to claim 6, characterized in that: The other end of the slide rod (304) is fixedly connected to a pull ring (306), and the outer wall of the pull ring (306) is provided with a silicone coating.

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