Bench test device for steel plate spring for automobile

Abstract

The utility model relates to the technical field of automobile part detection, in particular to an automobile steel plate spring bench test device, which comprises a base station, the left side and the right side of the surface of the base station are respectively provided with a mounting frame, a fixed plate is erected in the mounting frame, and the mounting frame is provided with guide rods which are arranged in parallel below the fixed plate. A plurality of identical sliding sleeves are arranged on the guide rods in a sleeving mode, limiting supporting columns are arranged on the sliding sleeves, the close ends of the limiting supporting columns located on the two sides are aligned in a one-to-one mode, the two ends of the steel plate spring abut against the limiting supporting columns on the two sides respectively, a suspension frame is arranged above the base table, and a traction machine is installed on the suspension frame. The pressing plate arranged at the output end of the bottom of the traction machine acts on the steel plate spring below, the limiting supporting columns which are adjusted at equal intervals can adapt to pressure testing of the steel plate springs of various lengths and curvatures, the application range of the steel plate springs is expanded, meanwhile, the difficulty of manual operation is lowered, and the testing efficiency of the steel plate springs under pressure deformation can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts detection, in particular to a bench test device for automobile leaf springs. Background Art

[0002] Automobile leaf springs, also known as leaf springs, are made up of multiple steel plates of unequal length and curvature. After installation, the two ends naturally bend upward. When the impact force of the road on the wheels is transmitted, the steel plates deform, which plays a role in buffering and vibration reduction.

[0003] When performing a pressure test on a leaf spring, it is necessary to repeatedly test the leaf spring's performance in pressing down or rebounding. Since leaf springs have different lengths and curvatures, common test devices are not universal. For example, the patent (CN205562282U) discloses a support device for bench testing of leaf springs for automobiles. This technical solution uses a linear guide rail and a slider to replace the pulley and roller method used in the existing standard, and uses a fixed axle pin that passes through the axial hole on the support seat instead of the existing standard method of placing the axle pin in an open groove. In the preparatory stage, the distance between the two support seats needs to be adjusted according to the length and curvature of the leaf spring before the deformation test can be started. The operation is relatively cumbersome. For this reason, a bench test device for leaf springs for automobiles is proposed. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a bench test device for a leaf spring used in an automobile.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A bench test device for a leaf spring for an automobile comprises a base, wherein mounting frames are respectively provided on the left and right sides of the base surface, and a fixing plate is provided inside the mounting frame, and the fixing plate slides along the width direction of the mounting frame.

[0007] In a preferred technical solution, guide rails are respectively provided on the front and rear edges of the mounting frame, and sliding seats are slidably mounted on the guide rails. The tops of the two sliding seats are connected to the bottom of the same fixed plate to form an integrated structure.

[0008] In a preferred technical solution, cylinders are respectively provided on the outer edges of the mounting frames on both sides, and the pneumatic rods provided at the output ends of the cylinders are connected to their respective corresponding fixing plates.

[0009] The mounting frame is provided with guide rods arranged in parallel below the fixed plate, and a number of identical sliding sleeves are provided on the guide rods, and the sliding sleeves are provided with limit pillars, and the adjacent ends of the limit pillars on both sides are aligned one by one, and the two ends of the leaf spring respectively rest on the limit pillars on both sides. A suspension is provided above the base, and a traction machine is installed on the suspension. A pressure plate provided at the output end at the bottom of the traction machine acts on the leaf spring below.

[0010] In a preferred technical solution, a plurality of guide grooves are provided on the plate surface of the fixed plate. The guide grooves are symmetrically provided with the plate surface of the fixed plate as the center, and adjacent guide grooves are provided in sequence and at intervals.

[0011] In a preferred technical solution, the guide groove in the center is opened straightly along the central axis of the fixed plate, and the guide grooves on both sides are opened obliquely along the central axis of the fixed plate.

[0012] In a preferred technical solution, the tops of the limiting pillars are respectively provided with fixing columns, and the fixing columns are respectively built into corresponding guide grooves in the corresponding upper fixing plates and slide along the guide grooves.

[0013] In a preferred technical solution, positioning brackets are respectively provided at both ends of the guide rod, and the guide rod is fixed in the mounting frame through the positioning brackets at both ends.

[0014] The beneficial effects of the utility model are:

[0015] The test device proposed in this scheme solves the problem of low versatility of the bench test of automobile leaf springs. The equidistantly adjustable limit struts can adapt to the pressure test of leaf springs of various lengths and curvatures, expanding the scope of application of leaf springs. At the same time, it reduces the difficulty of manual operation and improves the test efficiency of leaf springs under pressure deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the test device proposed in the utility model from a top view;

[0017] Figure 2 This is a schematic structural diagram of the main view of the test device proposed by the utility model.

[0018] In the figure: 1. Mounting frame; 2. Guide rail; 3. Sliding seat; 4. Fixed plate; 5. Cylinder; 6. Guide groove; 7. Positioning bracket; 8. Guide rod; 9. Sliding sleeve; 10. Limiting support; 11. Fixed column; 12. Suspension; 13. Traction machine; 14. Pressure plate. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] In this embodiment, refer to Figure 1-2 A bench test device for a leaf spring for automobiles includes a base, a mounting frame 1 is provided on the left and right sides of the base, and a fixing plate 4 is provided inside the mounting frame 1. Figure 1 As shown, guide rails 2 are respectively provided on the front and rear edges of the mounting frame 1 , and sliding seats 3 are slidably mounted on the guide rails 2 . The tops of the two sliding seats 3 are connected to the bottom of the same fixed plate 4 to form an integrated structure.

[0021] The outer edges of the mounting frames 1 on both sides are provided with cylinders 5, and the pneumatic rods provided at the output ends of the cylinders 5 are connected to the corresponding fixing plates 4. Through the pushing control of the cylinders 5, the fixing plates 4 can slide back and forth along the width direction of the mounting frame 1.

[0022] The mounting frame 1 is provided with parallel guide rods 8 below the fixing plate 4 , and positioning brackets 7 are provided at both ends of the guide rods 8 . The guide rods 8 are fixed in the mounting frame 1 through the positioning brackets 7 at both ends.

[0023] Several identical sliding sleeves 9 are provided on the guide rod 8. In this embodiment, the number of guide rods 8 is designed to be two groups, and can also be designed to be other numbers. One sliding sleeve 9 needs to be simultaneously sleeved on multiple guide rods 8 to ensure that the sliding sleeve 9 can only slide along the length direction of the guide rod 8.

[0024] A plurality of guide grooves 6 are provided on the surface of the fixed plate 4. The position and layout of the guide grooves 6 need to be specifically described. Figure 1 It can be seen that the guide grooves 6 are symmetrically opened with the plate surface of the fixed plate 4 as the center, and adjacent guide grooves 6 are opened in sequence at intervals. The guide groove 6 in the center is opened straight along the central axis of the fixed plate 4, and the guide grooves 6 on both sides are opened obliquely along the central axis of the fixed plate 4.

[0025] The sliding sleeves 9 are each provided with a limiting pillar 10 , and the tops of the limiting pillars 10 are respectively provided with fixing pillars 11 , which are respectively built into corresponding guide grooves 6 in the corresponding upper fixing plates 4 and slide along them.

[0026] The cylinders 5 on both sides are synchronized and pneumatically controlled, maintaining the same operating state. As the fixed plate 4 slides back and forth under the control of the cylinders 5, the fixing posts 11 on the limiting struts 10 simultaneously slide along their respective guide grooves 6, causing each limiting strut 10 to retract or expand by equal distances, aligning the adjacent ends of the limiting struts 10 on both sides. The leaf spring to be pressure-tested rests against the limiting struts 10 on either side, securing the leaf spring in place.

[0027] A suspension 12 is provided above the base, and a traction machine 13 is installed on the suspension 12. A pressure plate 14 provided at the output end at the bottom of the traction machine 13 acts on the leaf spring below.

[0028] During the test, since leaf springs vary in length, adjusting the spacing between adjacent limiting struts 10 ensures that leaf springs of varying sizes can rest against the four corner limiting struts 10, achieving fixation. Furthermore, leaf springs also vary in curvature. When testing leaf spring compression deformation and rebound, adjusting the spacing between limiting struts 10 can also alter the curvature of the leaf spring's central protrusion. Equidistantly adjustable limiting struts 10 accommodate compression testing of leaf springs of various lengths and curvatures, significantly expanding the testing range of leaf springs and facilitating subsequent compression deformation testing using the pressure plate 14.

[0029] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bench test device for a leaf spring for an automobile, characterized in that: The invention comprises a base, wherein a mounting frame (1) is respectively provided on the left and right sides of the table surface of the base, a fixing plate (4) is provided inside the mounting frame (1), and the fixing plate (4) slides along the width direction of the mounting frame (1), and the mounting frame (1) is provided with a parallel guide rod (8) below the fixing plate (4), and a plurality of identical sliding sleeves (9) are sleeved on the guide rod (8), and the sliding sleeves (9) are each provided with a limit pillar (10), and the near ends of the limit pillars (10) on both sides are aligned one by one, and the two ends of the leaf spring respectively abut against the limit pillars (10) on both sides, and a suspension (12) is provided above the base, and a traction machine (13) is installed on the suspension (12), and a pressure plate (14) provided at the output end at the bottom of the traction machine (13) acts on the leaf spring below.

2. The automotive leaf spring bench test device according to claim 1, characterized in that: A plurality of guide grooves (6) are formed on the plate surface of the fixed plate (4), wherein the guide grooves (6) are symmetrically formed with the plate surface of the fixed plate (4) as the center, and adjacent guide grooves (6) are formed at intervals in sequence.

3. The automotive leaf spring bench test device according to claim 2, characterized in that: The guide groove (6) at the center is opened vertically along the central axis of the fixed plate (4), and the guide grooves (6) at both sides are opened obliquely along the central axis of the fixed plate (4).

4. The automotive leaf spring bench test device according to claim 2, characterized in that: The tops of the position-limiting pillars (10) are respectively provided with fixing columns (11), and the fixing columns (11) are respectively built into corresponding guide grooves (6) in the corresponding upper fixing plates (4) and slide along the guide grooves (6).

5. The automotive leaf spring bench test device according to claim 1, characterized in that: Guide rails (2) are respectively provided on the front and rear edges of the mounting frame (1), and sliding seats (3) are slidably mounted on the guide rails (2). The tops of the two sliding seats (3) are connected to the bottom of the same fixed plate (4) to form an integrated structure.

6. The automotive leaf spring bench test device according to claim 1, characterized in that: Cylinders (5) are respectively provided at the outer edges of the mounting frames (1) on both sides, and pneumatic rods provided at the output ends of the cylinders (5) are connected to the corresponding fixing plates (4).

7. The automotive leaf spring bench test device according to claim 1, characterized in that: Positioning brackets (7) are respectively provided at both ends of the guide rod (8), and the guide rod (8) is fixed in the mounting frame (1) via the positioning brackets (7) at both ends.

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