A vibration test bench weight combination mechanism

Abstract

The problem to be solved by the present invention is to provide a vibration test bench weight combination mechanism, which can realize weight combination without carrying weight pieces, saves time and effort, and greatly improves work efficiency. It mainly includes a load platform, which is installed on the vibration test bench; a weight load assembly, including a weight tray and a vibration rod assembly, the lower end of the vibration rod assembly passes through the load platform and can move relatively, and the upper end is fixedly connected to the weight tray, and a plurality of weight pieces are stacked on the weight tray; a weight separation assembly, including a lifting plate for separating the weight pieces located above.

Description

Technical Field

[0001] The invention relates to the field of automobile shock absorber vibration detection, and in particular to a vibration test bench weight combination mechanism. Background Art

[0002] The automobile shock absorber vibration test bench adopts electro-hydraulic servo dynamic loading technology, integrates electro-hydraulic servo automatic control, automatic measurement and other functions, and uses the world's first-class professional fatigue measurement and control system as a platform. It has good professionalism, high reliability, advanced technology, and is easy to upgrade. It can be used by Party A to carry out dynamic and static characteristic tests of quarter air spring suspension, shock absorber (vertical and inclined installation), air spring and elastic components. By replacing the tooling, the vibration comfort research of chassis suspension, seat suspension and cab suspension can be realized.

[0003] The automobile shock absorber vibration test bench in the prior art mainly includes a test bench and a measurement and control system; the suspension test bench includes a bench body and an actuator connected to the bench body, the excitation head of the actuator is connected to the lower end of the shock absorber, and the upper end of the shock absorber is connected to the weight load assembly.

[0004] However, the weight replacement of domestic automobile shock absorber vibration test benches basically uses manual handling and assembly, which is time-consuming and labor-intensive; if electric or handling lifting tools are used, there are still problems such as large space occupation and difficulty in weight assembly. Summary of the invention

[0005] The problem to be solved by the present invention is to provide a vibration test bench weight combination mechanism, which can realize weight combination without carrying weight sheets, thus saving time and labor and greatly improving work efficiency.

[0006] The present invention is achieved through the following technical solutions:

[0007] A vibration test bench weight combination mechanism includes a load platform installed on the vibration test bench; a weight load assembly including a weight tray and a vibration rod assembly, wherein the lower end of the vibration rod assembly passes through the load platform and can move relatively, and the upper end is fixedly connected to the weight tray, and a plurality of weight sheets are stacked on the weight tray; and a weight separation assembly including a lifting plate for separating the weight sheets located above.

[0008] Furthermore, the weight loading assembly also includes a tray column fixed on the weight tray, and the tray column passes through a plurality of weight sheets in sequence.

[0009] Furthermore, the weight separation assembly also includes guide columns symmetrically distributed on the load platform and an elevator assembly capable of driving the lifting plate to move up and down; the lifting plate is an annular plate and is slidably connected to the two guide columns through two guide sleeves.

[0010] Furthermore, each weight piece is disc-shaped, and the thickness of the round edge of the weight piece is smaller than the center thickness; the upper end of each guide sleeve extends to the top of the lifting plate and is rotatably sleeved with a claw, and the side of the claw is vertically provided with a plurality of evenly spaced teeth, and the plurality of teeth can be staggered and embedded in the gaps between adjacent weight pieces by rotation; a rotating hand lever is fixed to the other side of the claw, and the claw is also provided with a safety pin that can fix it to the lifting plate.

[0011] Furthermore, it also includes a circular top plate fixed on the upper ends of the two guide columns, and the pallet columns pass through the circular top plate; the lifting assembly includes two spiral elevators, and the two spiral elevators are symmetrically distributed front and back in the load platform, and the lifting ends of the two spiral elevators are connected to the lifting plate.

[0012] Furthermore, the number of the weight pieces is 20-30 pieces, and the mass of each weight piece is 25-30 kg.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. When the weights need to be combined, manually rotate the two claws on the lifting plate to embed them into the gaps of the corresponding weight pieces, and control the lifting plate to rise through the lifting assembly, so that the weight pieces that do not need to be loaded are lifted and separated from the weight pieces below, thereby leaving the test area and entering the non-test area. The remaining weight pieces become the load weight of the test shock absorber; in this process, there is no need to manually carry the weight pieces, which greatly reduces the workload of carrying and combining weights and improves work efficiency. This mechanism has a compact structure and saves space for placing weights in non-test states;

[0015] 2. The design of the weight piece and the claw facilitates the handling of the weight piece and increases the safety during the lifting process;

[0016] 3. Two spiral elevators drive the lifting plate to move up and down, using their own self-locking properties to improve the safety performance of the mechanism;

[0017] 4. The present invention has a compact structure and occupies little space, which saves time and effort during use and greatly improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the weight combination mechanism of the vibration test bench of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the weight load assembly of the present invention;

[0020] Figure 3 This is a schematic diagram of the weight sheet of the present invention;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the lifting plate of the present invention;

[0022] Figure 5 Schematic diagram of the working state of the weight load assembly of the present invention

[0023] In the figure: 1, load platform, 2, weight load assembly, 21, weight tray, 22, vibration rod assembly, 23, tray column, 3, weight separation assembly, 31, lifting plate, 32, guide column, 33, lifting assembly, 34, circular top plate, 35, claw, 36, tooth, 4, weight plate, 5, actuator, 6, shock absorber sample. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings. The described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0025] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front", "rear", "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0026] The purpose of the present invention is to avoid the time-consuming and laborious work of assembling and carrying weights when conducting a vibration test on a shock absorber of an automobile, so as to improve the work efficiency.

[0027] like Figure 1-5 As shown, the vibration test bench weight assembly mechanism of the present invention mainly includes a load platform 1, a weight loading assembly 2 and a weight separation assembly 3. In this embodiment, the vibration test bench includes two support columns, the bottoms of the two support columns are fixed to the ground by bolts, and the load platform 1 is fixedly installed between the two support columns by bolts, forming a gantry-type frame as a whole.

[0028] The weight load assembly 2 mainly includes a weight tray 21, a vibration rod assembly 22, a tray column 23 and 20 weight pieces 4. The vibration rod assembly 22 is composed of two smooth rods distributed left and right. The two smooth rods of the vibration rod assembly 22 vertically penetrate the load platform 1 and can slide up and down relatively. The lower end of the vibration rod assembly 22 is equipped with a connecting plate for fixing the upper end of the shock absorber. The upper end of the vibration rod assembly 22 is fixedly connected to the weight tray 21 by a bolt member, and the center position of the weight tray 21 is vertically fixedly installed with the tray column 23. Each weight piece 4 is disc-shaped, and the through hole processed at the center of the circle can be easily passed by the tray column. The round edge thickness of the weight piece 4 is less than the center thickness, so that when adjacent weight pieces 4 are stacked, a gap is formed at the edge. The single-piece mass of the weight piece 4 is 25KG, so the weight of the load is determined by the number of pieces.

[0029] The weight separation assembly 3 mainly includes a lifting plate 31, two guide columns 32, a lifting assembly 33 and a circular top plate 34. The two guide columns 32 are symmetrically installed on the load platform 1. The circular top plate 34 is installed on the upper ends of the two guide columns 32 by bolts. The center position of the circular top plate 34 is processed with a center hole that allows the tray column 23 to pass through. The lifting plate 31 is annular and disc-shaped, and the weight load assembly 2 can freely pass through the center hole of the lifting plate 31. The lifting plate 31 is slidably connected to the two guide columns 32 by two guide sleeves distributed on the left and right, so that the lifting plate 31 can move up and down along the direction of the guide columns 32. The upper end of each guide sleeve extends to the top of the lifting plate 31 and is rotatably sleeved with a metal claw 35, so that the claw 35 can be manually rotated to change the angle. The side of each claw 35 is vertically provided with a plurality of uniformly spaced teeth 36, and the plurality of teeth 36 can be staggered and embedded in the gap between adjacent weight pieces 4 by rotating, so that the weight pieces 4 that do not need to be tested can be clamped. A rotating hand lever is fixed on the other side of the claw 35, and a safety pin is installed on the claw 35. A pin hole is processed at a suitable position on the lifting plate 31. When the rotating claw 35 clamps the weight sheet 4, the claw 35 can be fixed by the safety pin, which greatly improves safety.

[0030] The lifting assembly 33 includes two spiral elevators, which are symmetrically distributed front and back in the load platform 1. The lifting ends of the two spiral elevators are connected to the lifting plate 31, and the output shafts of the two spiral elevators are connected by a linkage shaft. In this way, the two spiral elevators can be synchronously raised and lowered through a driving motor. This technology is an existing conventional technical means and will not be described in detail here.

[0031] The vibration test bench weight combination mechanism of the present invention is specifically applied to a vehicle shock absorber test bench. An actuator 5 is installed below the load platform. Taking a vibration test performed by simulating 1 / 4 of the frame weight to load the shock absorber sample as an example, the specific operation process is as follows:

[0032] Install the shock absorber sample 6 between the excitation head of the actuator 5 and the bottom end of the vibration rod assembly. Only 10 weights out of the 20 weights are needed for the loading test. Start the lifting assembly to control the lifting plate to rise to a specific position. Manually turn the two claws so that the teeth are embedded in the gap between the weights. Then insert the safety pin into the pin hole to fix the claws. Continue to control the lifting plate to rise through the lifting assembly. The lifting plate will raise the unnecessary weights to the highest point. In this way, there are only 10 weights on the weight tray. Then use two locking blocks to dock the tray columns and tighten them with bolts to fix the 10 weights participating in the test on the weight tray. Start the actuator and perform a simulated vibration test on the shock absorber sample.

[0033] In this process, there is no need to manually carry the weights, which greatly reduces the workload of carrying and assembling the weights and improves work efficiency. This mechanism has a compact structure, saves space for placing weights in non-testing states, and improves safety at the same time.

Claims

1. A vibration test bench weight combination mechanism, characterized in that: Including, Load platform, mounted on the vibration test bench; A weight load assembly, comprising a weight tray and a vibration rod assembly, wherein the lower end of the vibration rod assembly penetrates the load platform and can move relatively, and the upper end is fixedly connected to the weight tray, and a plurality of weight sheets are stacked on the weight tray; The weight separation assembly includes a lifting plate for separating the weight sheet located above; The weight load assembly also includes a tray column fixed on the weight tray, and the tray column sequentially penetrates a plurality of weight sheets; The weight separation assembly also includes guide posts symmetrically distributed on the load platform and a lifting assembly capable of driving the lifting plate to move up and down; the lifting plate is an annular plate and is slidably connected to the two guide posts through two guide sleeves; Each weight piece is disc-shaped, and the thickness of the round edge of the weight piece is smaller than the center thickness; the upper end of each guide sleeve extends to the top of the lifting plate and is rotatably sleeved with a claw, and the side of the claw is vertically provided with a plurality of evenly spaced teeth, and the plurality of teeth can be staggered and embedded in the gaps between adjacent weight pieces by rotation; a rotating hand lever is fixed to the other side of the claw, and the claw is also provided with a safety pin that can fix it to the lifting plate.

2. The vibration test bench weight combination mechanism according to claim 1, characterized in that: It also includes a circular top plate fixed on the upper ends of the two guide columns, and the tray columns pass through the circular top plate; the lifting assembly includes two spiral elevators, and the two spiral elevators are symmetrically distributed front and back in the load platform, and the lifting ends of the two spiral elevators are connected to the lifting plate.

3. The vibration test bench weight combination mechanism according to any one of claims 1 to 2, characterized in that: The number of the weight pieces is 20-30 pieces, and the mass of each weight piece is 25-30 kg.

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