Steel plate spring stiffness testing device

Abstract

The utility model relates to the technical field of steel plate spring testing, and discloses a steel plate spring rigidity testing device which comprises a workbench, a hydraulic measurer, a steel plate spring and a fixing seat, U-shaped sliding bins are arranged on the side walls of the workbench on the two sides of the hydraulic measurer, and T-shaped sliding rods are connected to the inner walls of the U-shaped sliding bins in a sliding mode. One end of the T-shaped sliding rod penetrates through the side wall of the U-shaped sliding bin and is in sliding connection with the U-shaped sliding bin, and the end, located on one side of the hydraulic measurer, of the T-shaped sliding rod is connected with a bearing device. The working table, the hydraulic measuring device, the steel plate spring, the fixing base, the U-shaped sliding bin, the T-shaped sliding rod, the bearing device, the adjusting and limiting device and the like are arranged and used in cooperation, when the steel plate spring is measured, one side of a spring eye of the steel plate spring is placed on the bearing device, and the steel plate spring is fixed through the fixing base; and the adjusting limiting device can adjust the position of the bearing device according to the steel plate springs of different sizes so as to adapt to the steel plate springs of different sizes, universality is high, and operation is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of leaf spring testing, in particular to a leaf spring stiffness testing device. Background Art

[0002] Leaf spring is an elastic element widely used in automobile suspension. It is composed of several alloy spring leaves of equal width but unequal length, forming an elastic beam of approximately equal strength. Stiffness is one of the important parameters of leaf spring performance. By testing the stiffness, we can understand the degree of deformation of the leaf spring when subjected to external force, and then evaluate its load-bearing capacity and stability in practical applications. The size of the stiffness directly affects the working performance and life of the leaf spring, so it is very important to test it accurately.

[0003] At present, patent number CN213714699U discloses a commercial vehicle leaf spring testing device, including a vertical mechanism for pressing the leaf spring downward, the piston pressure plate of the vertical mechanism is used to abut against the top of the leaf spring, and the two ends of the leaf spring abut against the supporting beam of the lateral sliding mechanism, and the supporting beam can move laterally relative to the bottom plate. The commercial vehicle leaf spring testing device described in the above device makes the installation and testing of the leaf spring convenient and fast, with small test error and high accuracy. It is suitable for permanent deformation test, stiffness test, fatigue durability test of the leaf spring, and has strong versatility and practicality.

[0004] But the following problems still exist:

[0005] When installing the leaf spring, the above device first needs to move the lateral sliding mechanism to one side of the vertical mechanism according to the size of the leaf spring, so as to support and fix the leaf spring, and then test the leaf spring. It is not simple enough and has low working efficiency.

[0006] To this end, we propose a leaf spring stiffness testing device to solve the above problems. Utility Model Content

[0007] The utility model aims to provide a leaf spring stiffness testing device, which is convenient for fixing and receiving the leaf spring, thereby facilitating workers to perform stiffness testing on the leaf spring stiffness and improving work efficiency.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A leaf spring stiffness testing device comprises a workbench, a hydraulic measuring device, a leaf spring and a fixed seat, the side walls of the workbench on both sides of the hydraulic measuring device are provided with U-shaped sliding bins, and the inner wall of the U-shaped sliding bin is slidably connected with a T-shaped sliding rod, one end of the T-shaped sliding rod passes through the side wall of the U-shaped sliding bin and is slidably connected to the U-shaped sliding bin, and one end of the T-shaped sliding rod located on one side of the hydraulic measuring device is connected to a receiving device, and the other end of the T-shaped sliding rod is connected to an adjustment limit device.

[0010] Preferably, the receiving device includes a concave block fixedly connected to one end of the T-shaped sliding rod, and the side wall of the concave block is provided with a Y-shaped groove, the side wall of the Y-shaped groove is slidably connected to the receiving rod, and the side wall of the receiving rod is slidably connected to the inner wall of the leaf spring coil ear, the side wall of the concave block located below the receiving rod is fixedly connected to two concave load-bearing blocks, and the upper surface of the concave load-bearing block is provided with a threaded hole, a concave fixing block is provided above the receiving rod, and a fixing screw is provided above the concave fixing block, one end of the fixing screw passes through the side wall of the concave fixing block and is threadedly connected to the threaded hole, and the side wall of the concave block is hinged with a roller, and the roller is rollingly connected to the upper surface of the workbench.

[0011] Preferably, the adjustment limit device includes a bidirectional screw rod arranged on one side of the U-shaped sliding bin, and the side wall of the bidirectional screw rod located on one side of the U-shaped sliding bin is threadedly connected to a U-shaped adjustment block, the side wall of the U-shaped adjustment block is fixedly connected to a limit spring, and the other end of the limit spring is fixedly connected to the side wall of the T-shaped sliding rod, one end of the bidirectional screw rod passes through the side wall of the U-shaped sliding bin and is fixedly connected to a turning handle, and a plurality of groups of pin holes distributed in an annular manner are provided on the side wall of the workbench located on the side of the turning handle, and a limit pin is provided on one side of the turning handle, and one end of the limit pin passes through the side wall of the turning handle and is slidably connected to the pin hole.

[0012] Preferably, a fixed magnet is fixedly connected to the bottom surface of the latch hole, and the fixed magnet is magnetically connected to the limit latch.

[0013] Preferably, the side wall rotating sleeve of the turning handle is provided with a rubber sleeve.

[0014] Preferably, a roller sliding groove is provided on the upper surface of the workbench below the roller.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model cooperates with a workbench, a hydraulic measuring instrument, a leaf spring, a fixing seat, a U-shaped sliding bin, a T-shaped sliding rod, a receiving device and an adjusting limit device in order to measure the leaf spring. When the leaf spring is measured, one side of the leaf spring ear is placed on the receiving device and the leaf spring is fixed by the fixing seat. The adjusting limit device can adjust the position of the receiving device according to leaf springs of different sizes, so as to adapt to leaf springs of different sizes. The utility model has strong universality and is simple and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional structural schematic diagram of a leaf spring stiffness testing device proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the front cross-sectional structure of a leaf spring stiffness testing device proposed by the utility model;

[0019] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0020] Figure 4 This is a schematic cross-sectional structure diagram of a leaf spring stiffness testing device proposed by the utility model;

[0021] Figure 5 for Figure 5 Schematic diagram of the enlarged structure at point B.

[0022] In the figure: 1. workbench; 2. hydraulic measuring instrument; 3. leaf spring; 4. fixed seat; 5. U-shaped slide; 6. T-shaped slide bar; 7. concave block; 8. Y-shaped groove; 9. receiving rod; 10. roller; 11. threaded hole; 12. concave load-bearing block; 13. concave fixing block; 14. fixing screw; 15. limit pin; 16. pin hole; 17. U-shaped adjusting block; 18. limit spring; 19. rubber sleeve; 20. fixing magnet; 21. roller slide groove; 22. turning handle; 23. bidirectional screw. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0024] See also Figure 1-5 A leaf spring stiffness testing device comprises a workbench 1, a hydraulic measuring device 2, a leaf spring 3 and a fixing seat 4. The side walls of the workbench 1 on both sides of the hydraulic measuring device 2 are provided with U-shaped sliding bins 5, and the inner wall of the U-shaped sliding bin 5 is slidably connected with a T-shaped sliding rod 6, one end of the T-shaped sliding rod 6 passes through the side wall of the U-shaped sliding bin 5 and is slidably connected with the U-shaped sliding bin 5, and one end of the T-shaped sliding rod 6 on one side of the hydraulic measuring device 2 is connected with a receiving device, and the other end of the T-shaped sliding rod 6 is connected with an adjusting limit device.

[0025] It can be seen from the above structure that; by setting up a workbench 1, a hydraulic measuring instrument 2, a leaf spring 3, a fixing seat 4, a U-shaped sliding bin 5, a T-shaped sliding rod 6, a receiving device and an adjusting limit device, when measuring the leaf spring 3, one side of the coil ear of the leaf spring 3 is placed on the receiving device, and the leaf spring 3 is fixed by the fixing seat 4, and the adjusting limit device can adjust the position of the receiving device according to the leaf springs 3 of different sizes, so as to adapt to the leaf springs 3 of different sizes, with strong universality and simple and convenient operation.

[0026] Furthermore, the receiving device includes a concave block 7 fixedly connected to one end of the T-shaped sliding rod 6, and a Y-shaped groove 8 is provided on the side wall of the concave block 7, the side wall of the Y-shaped groove 8 is slidably connected to the receiving rod 9, and the side wall of the receiving rod 9 is slidably connected to the inner wall of the coil ear of the leaf spring 3, and the side wall of the concave block 7 located below the receiving rod 9 is fixedly connected with two concave load-bearing blocks 12, and a threaded hole 11 is provided on the upper surface of the concave load-bearing block 12, a concave fixed block 13 is provided above the receiving rod 9, and a fixing screw 14 is provided above the concave fixed block 13, one end of the fixing screw 14 passes through the side wall of the concave fixed block 13 and is threadedly connected to the threaded hole 11, and a roller 10 is hinged on the side wall of the concave block 7, and the roller 10 is rollingly connected to the upper surface of the workbench 1; by arranging the concave block 7, the Y-shaped groove 8, the receiving rod 9, the concave load-bearing block 12, the threaded hole 11, the roller 10. The concave fixing block 13 and the fixing screw 14 are used together. When the stiffness of the leaf spring 3 is measured, the receiving rod 9 is first inserted into the 3 ears of the leaf spring. The design of the Y-shaped inclined surface of the Y-shaped groove 8 makes it convenient for the receiving rod 9 to slide into the Y-shaped groove 8 along the inclined surface of the Y-shaped groove 8. Then, the concave load-bearing block 12 and the concave fixing block 13 are closed, and then the fixing screw 14 is threadedly connected with the threaded hole 11 to fix the receiving rod 9 and then the leaf spring 3. The operation is simple and convenient. The leaf spring 3 deformed by pressure will push the concave block 7, so that the concave block 7 slides to both sides along the surface of the workbench 1 through the roller 10, and then the deformation of the leaf spring 3 is measured. When the measurement of the leaf spring 3 is completed, the adjustment limit device will push the concave block 7 to automatically return to its original position through the T-shaped slide bar 6, which is convenient for the next installation and use of the leaf spring 3.

[0027] Furthermore, the adjustment limit device includes a bidirectional screw 23 arranged on one side of the U-shaped sliding bin 5, and the side wall of the bidirectional screw 23 located on one side of the U-shaped sliding bin 5 is threadedly connected with a U-shaped adjustment block 17, the side wall of the U-shaped adjustment block 17 is fixedly connected with a limit spring 18, and the other end of the limit spring 18 is fixedly connected to the side wall of the T-shaped sliding bar 6, one end of the bidirectional screw 23 passes through the side wall of the U-shaped sliding bin 5 and is fixedly connected with a turning handle 22, and a plurality of groups of latch holes 16 distributed in an annular manner are opened on the side wall of the workbench 1 located on one side of the turning handle 22, and a limit latch 15 is arranged on one side of the turning handle 22, and one end of the limit latch 15 passes through the side wall of the turning handle 22 and is slidably connected to the latch hole 16; by designing the U-shaped sliding bin 5, the bidirectional screw 23, the U-shaped adjustment block 17, the limit spring 18, the T-shaped sliding bar 6, The turning handle 22, the latch hole 16 and the limit latch 15 are used in combination, and the limit spring 18 will push the T-shaped slide bar 6 to slide forward, so that the concave block 7 maintains a fixed starting point on the workbench 1, and will not affect the T-shaped slide bar 6 from being pushed and sliding along the U-shaped slide bin 5. At the same time, when measuring leaf springs 3 of different sizes, the turning handle 22 is turned to rotate the bidirectional screw 23, and then the U-shaped adjustment block 17 threadedly connected to the bidirectional screw 23 will move in relative directions, and then the position of the concave block 7 on the workbench 1 is changed through the cooperation of the limit spring 18 and the T-shaped slide bar 6 to adapt to leaf springs 3 of different sizes. The operation is simple and convenient, and then the limit latch 15 is slid into the latch hole 16 to fix the turning handle 22 to prevent the bidirectional screw 23 from rotating to change the position of the U-shaped adjustment block 17.

[0028] Furthermore, a fixed magnet 20 is fixedly connected to the bottom surface of the latch hole 16, and the fixed magnet 20 is magnetically connected to the limit latch 15; by providing the fixed magnet 20, the limit latch 15 is fixed to prevent the limit latch 15 from loosening, thereby improving the safety of use.

[0029] Furthermore, a fixed magnet 20 is fixedly connected to the bottom surface of the pin hole 16, and a rubber sleeve 19 is rotatably provided on the side wall of the tumbler 22; by providing the rubber sleeve 19, the comfort when the tumbler 22 is rotated is improved.

[0030] Furthermore, a roller slide groove 21 is provided on the upper surface of the workbench 1 below the roller 10 ; the roller slide groove 21 is provided to facilitate the sliding of the roller 10 and prevent the roller from being offset when moving.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A leaf spring stiffness testing device, comprising a workbench (1), a hydraulic measuring device (2), a leaf spring (3) and a fixing seat (4), characterized in that: The side walls of the workbench (1) on both sides of the hydraulic measuring device (2) are both provided with U-shaped sliding bins (5), and the inner wall of the U-shaped sliding bin (5) is slidably connected to a T-shaped sliding rod (6), one end of the T-shaped sliding rod (6) passes through the side wall of the U-shaped sliding bin (5) and is slidably connected to the U-shaped sliding bin (5), and one end of the T-shaped sliding rod (6) on one side of the hydraulic measuring device (2) is connected to a receiving device, and the other end of the T-shaped sliding rod (6) is connected to an adjustment limit device.

2. A leaf spring stiffness testing device according to claim 1, characterized in that: The receiving device comprises a concave block (7) fixedly connected to one end of the T-shaped sliding rod (6), and a Y-shaped groove (8) is provided on the side wall of the concave block (7), the side wall of the Y-shaped groove (8) is slidably connected to a receiving rod (9), and the side wall of the receiving rod (9) is slidably connected to the inner wall of the coil ear of the leaf spring (3), and the side wall of the concave block (7) located below the receiving rod (9) is fixedly connected to two concave bearing blocks (12), and the concave bearing blocks (12) are ) is provided with a threaded hole (11) on its upper surface, a concave fixing block (13) is provided above the receiving rod (9), and a fixing screw (14) is provided above the concave fixing block (13), one end of the fixing screw (14) passes through the side wall of the concave fixing block (13) and is threadedly connected to the threaded hole (11), and a roller (10) is hingedly connected to the side wall of the concave block (7), and the roller (10) is rollingly connected to the upper surface of the workbench (1).

3. A leaf spring stiffness testing device according to claim 1 or 2, characterized in that: The adjustment limit device comprises a bidirectional screw rod (23) arranged on one side of the U-shaped slide bin (5), and the side wall of the bidirectional screw rod (23) located on one side of the U-shaped slide bin (5) is threadedly connected with a U-shaped adjustment block (17), the side wall of the U-shaped adjustment block (17) is fixedly connected with a limit spring (18), and the other end of the limit spring (18) is fixedly connected with the side wall of the T-shaped slide bar (6), one end of the bidirectional screw rod (23) passes through the side wall of the U-shaped slide bin (5) and is fixedly connected with a turning handle (22), and a plurality of groups of latch holes (16) distributed in an annular manner are opened on the side wall of the workbench (1) located on one side of the turning handle (22), and a limit latch pin (15) is arranged on one side of the turning handle (22), and one end of the limit latch pin (15) passes through the side wall of the turning handle (22) and is slidably connected with the latch hole (16).

4. A leaf spring stiffness testing device according to claim 3, characterized in that: A fixed magnet (20) is fixedly connected to the bottom surface of the latch hole (16), and the fixed magnet (20) is magnetically connected to the limit latch (15).

5. A leaf spring stiffness testing device according to claim 3, characterized in that: The side wall of the turning handle (22) is rotatably sleeved with a rubber sleeve (19).

6. A leaf spring stiffness testing device according to claim 2, characterized in that: A roller sliding groove (21) is provided on the upper surface of the workbench (1) below the roller (10).

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