A special device for hydraulic cylinder test

Abstract

The utility model relates to the technical field of clamp, and disclose a kind of hydraulic oil cylinder test special device, including device base and the fixed jaw subassembly of symmetrical setting at the top two side edge position of device base, the top wall surface middle position of device base is equipped with fixed groove, fixed groove inside is provided with positioning mechanism, positioning mechanism includes the four arc clamping plates of being distributed in ring equidistance state in the fixed groove inside, the bottom wall surface of fixed groove is equipped with the four adjusting sliding slot of being distributed in ring equidistance state, four adjusting sliding slot inside is provided with the adjusting mechanism for driving four arc clamping plates horizontal movement, adjusting mechanism includes the four adjusting screw rods of being rotatably connected with four adjusting sliding slot and the four adjusting nut blocks of being threadedly connected with the outer wall of four adjusting screw rods. The utility model is positioned mechanism and adjusting motor are arranged, realize the equipment can be fixed to the function of the oil cylinder of different sizes, improve the applicability of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of fixture technology, and in particular to a special device for testing hydraulic cylinders. Background Technology

[0002] A hydraulic cylinder, also known as a hydraulic cylinder, is a linear motion actuator whose output force is proportional to the effective area of ​​the piston and the pressure difference across it. Its function is to convert hydraulic energy into mechanical energy. The input of a hydraulic cylinder is the flow rate and pressure of the fluid, and the output is linear motion speed and force. The piston of a hydraulic cylinder can complete linear reciprocating motion, and the output linear displacement is finite. A hydraulic cylinder is an energy conversion device that converts hydraulic energy into reciprocating linear motion mechanical energy. A hydraulic cylinder basically consists of a cylinder barrel and cylinder head, a piston and piston rod, a sealing device, a buffer device, and an exhaust device. The buffer device and exhaust device are determined according to the specific application, while the other devices are essential.

[0003] A search revealed that application number 202023231715.8 discloses a special fixture for testing hydraulic cylinders, including a device base. The top of the device base is fixedly installed with mounting plates near the two side edges. Motors are installed on the inner bottom surfaces of the two mounting plates. Lifting grooves are opened on one side outer surface of the two mounting plates. Threaded rods are welded to the output shafts of the two motors. Lifting blocks are fitted on the outer surfaces of the threaded rods, and the outer surfaces of the lifting blocks slide against the inside of the lifting grooves.

[0004] The hydraulic cylinder testing fixture in this patent application uses a soft layer combined with trapezoidal blocks and spring force to fix the bottom of the cylinder during use. However, the fixing range formed by the soft layer, trapezoidal blocks, and spring force is relatively narrow, making it difficult to fix cylinders of different sizes. Furthermore, the fixing state formed by spring force is unstable, which can easily cause the cylinder to shift during the experiment, affecting the experimental results and reducing the practicality of the device. Utility Model Content

[0005] The present invention aims to solve the technical problems existing in the prior art and provide a special device for testing hydraulic cylinders.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a special device for testing hydraulic cylinders, comprising a device base and fixed claw assemblies symmetrically arranged at the top two sides of the device base. A fixed groove is provided in the middle of the top wall of the device base, and a positioning mechanism is provided inside the fixed groove. The positioning mechanism includes four arc-shaped clamping plates arranged in a ring at equal intervals inside the fixed groove. Four adjusting slide grooves are arranged in a ring at equal intervals on the bottom wall of the fixed groove. An adjusting mechanism for driving the four arc-shaped clamping plates to move horizontally is provided inside the four adjusting slide grooves. The adjusting mechanism includes four adjusting threaded rods rotatably connected to the four adjusting slide grooves and four adjusting nut blocks threadedly connected to the outer walls of the four adjusting threaded rods. The bottom ends of the four arc-shaped clamping plates are fixedly installed to the top ends of the four adjusting nut blocks.

[0007] Furthermore, four rubber pads are fixedly connected to the sides of the four arc-shaped clamping plates that are close to each other.

[0008] Furthermore, the four adjusting threaded rods and the four adjusting nut blocks are all distributed in a ring with equal spacing.

[0009] Furthermore, the four adjusting nut blocks are slidably connected to the interior of the four adjusting grooves respectively.

[0010] Furthermore, a synchronization groove is provided at the middle position of the top wall of the fixing groove.

[0011] Furthermore, the four adjusting threaded rods, with one end close to the other, extend through the sidewalls of the four adjusting slides into the synchronous groove and are fixedly mounted with four synchronous steering gears.

[0012] Furthermore, the four synchronous steering gears are arranged in a mutually meshing state.

[0013] Furthermore, an adjustment motor is fixedly installed at the center of the front wall of the device base.

[0014] Furthermore, the front end of the adjusting threaded rod located at the front position passes through the front wall of the adjusting slide groove located at the front position and is fixedly installed with the output end of the adjusting motor.

[0015] This utility model provides a special device for testing hydraulic cylinders. It has the following beneficial effects:

[0016] 1. This special testing device for hydraulic cylinders, through the setting of a positioning mechanism and an adjusting motor, allows the cylinder to be inserted into the space between multiple arc-shaped clamping plates inside the fixed groove when it is fixed inside the groove. The output of the adjusting motor drives the adjusting threaded rod at the front position to rotate. Since one end of the four adjusting threaded rods is meshed with four synchronous steering gears, the adjusting threaded rod at the front position drives the other three adjusting threaded rods to rotate synchronously. This forces the four adjusting nut blocks, which are threadedly connected to the four adjusting threaded rods, to move closer to each other along the four adjusting grooves. The four adjusting nut blocks then drive the four arc-shaped clamping plates to move closer to or further away from each other, forming a clamping effect on cylinders of different sizes, thus achieving the effect of fixing the cylinder inside the fixed groove. The operation is simple and practical, the structure is reasonable and compact, and the device can fix cylinders of different sizes, improving its applicability.

[0017] 2. This special testing device for hydraulic cylinders, by setting rubber pads, improves the tightness between the four arc-shaped clamping plates and the cylinder by deformation when the four arc-shaped clamping plates clamp and fix the cylinder, thereby improving the clamping effect of the four arc-shaped clamping plates on the cylinder and improving the stability of the device structure. Attached Figure Description

[0018] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0020] Figure 1 This is a front sectional view of the hydraulic cylinder testing device of this utility model;

[0021] Figure 2 This is a top view of the hydraulic cylinder testing device of this utility model;

[0022] Figure 3 for Figure 2 An enlarged diagram of A in the diagram.

[0023] Legend:

[0024] 10. Device base; 11. Fixing claw assembly; 12. Fixing groove; 13. Adjusting slide; 14. Adjusting threaded rod; 15. Adjusting nut block; 16. Arc-shaped clamping plate; 17. Rubber pad; 18. Synchronization groove; 19. Synchronization steering gear; 20. Adjusting motor. Detailed Implementation

[0025] A special device for testing hydraulic cylinders, such as Figure 1-3 As shown, the device includes a base 10 and fixing claw assemblies 11 symmetrically arranged at the top two edges of the base 10. The fixing claw assemblies 11 are prior art and will not be described in detail. A fixing groove 12 is formed in the middle of the top wall of the base 10. A positioning mechanism is provided inside the fixing groove 12. The positioning mechanism includes four arc-shaped clamping plates 16 arranged in a ring with equal spacing inside the fixing groove 12. Four rubber pads 17 are fixedly connected to the sides of the four arc-shaped clamping plates 16 that are close to each other. Four adjusting grooves 13 are formed in a ring with equal spacing on the bottom wall of the fixing groove 12. An adjusting mechanism for moving the four arc-shaped clamping plates 16 horizontally is provided inside the four adjusting grooves 13. The adjusting mechanism includes four adjusting threaded rods 14 rotatably connected to the four adjusting grooves 13 and threaded connections to the outer walls of the four adjusting threaded rods 14. The four adjusting nut blocks 15 are fixedly installed at the bottom ends of the four arc-shaped clamping plates 16 and the top ends of the four adjusting nut blocks 15. The four adjusting threaded rods 14 and the four adjusting nut blocks 15 are distributed in a ring with equal spacing. The four adjusting nut blocks 15 are slidably connected to the interior of the four adjusting slide grooves 13. A synchronous groove 18 is provided at the middle position of the top wall of the fixed groove 12. The ends of the four adjusting threaded rods 14 that are close to each other pass through the side wall of the four adjusting slide grooves 13 and extend into the synchronous groove 18 and are fixedly installed with four synchronous steering gears 19. The four synchronous steering gears 19 are set in a meshing state. An adjusting motor 20 is fixedly installed at the middle position of the front wall of the device base 10. The front end of the adjusting threaded rod 14 located at the front position passes through the front wall of the adjusting slide groove 13 located at the front position and is fixedly installed with the output end of the adjusting motor 20.

[0026] The working principle of this utility model is as follows: When the hydraulic cylinder is fixed inside the fixed groove 12, it is inserted into the position between multiple arc-shaped clamping plates 16 inside the fixed groove 12. The output end of the control motor 20 drives the adjusting threaded rod 14 at the front position to rotate. Since one end of the four adjusting threaded rods 14 is meshed with each other through four synchronous steering gears 19, the adjusting threaded rod 14 at the front position drives the other three adjusting threaded rods 14 to rotate synchronously. This forces the four adjusting nut blocks 15, which are threadedly connected to the four adjusting threaded rods 14, to move closer to each other along the four adjusting slide grooves 13. Each adjusting nut block 15 drives the four arc-shaped clamping plates 16 to move closer or further apart, forming a clamping effect on hydraulic cylinders of different sizes, thus fixing the hydraulic cylinders inside the fixing groove 12. The above operation is simple and practical, and the structure is reasonable and compact. This enables the equipment to fix hydraulic cylinders of different sizes, improving the applicability of the equipment. When the four arc-shaped clamping plates 16 clamp and fix the hydraulic cylinder, the four rubber pads 17 deform to improve the tightness between the four arc-shaped clamping plates 16 and the hydraulic cylinder, improving the clamping effect of the four arc-shaped clamping plates 16 on the hydraulic cylinder and improving the stability of the equipment structure.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A special device for testing hydraulic cylinders, comprising a device base (10) and fixing claw assemblies (11) symmetrically arranged at the top two edges of the device base (10), characterized in that: A fixing groove (12) is provided at the middle of the top wall of the device base (10). A positioning mechanism is provided inside the fixing groove (12). The positioning mechanism includes four arc-shaped clamping plates (16) arranged in a ring with equal spacing inside the fixing groove (12). Four adjusting slide grooves (13) are provided in a ring with equal spacing inside the bottom wall of the fixing groove (12). An adjusting mechanism for driving the four arc-shaped clamping plates (16) to move horizontally is provided inside the four adjusting slide grooves (13). The adjusting mechanism includes four adjusting threaded rods (14) rotatably connected to the four adjusting slide grooves (13) and four adjusting nut blocks (15) threadedly connected to the outer wall of the four adjusting threaded rods (14). The bottom ends of the four arc-shaped clamping plates (16) are fixedly installed with the top ends of the four adjusting nut blocks (15).

2. The special device for testing hydraulic cylinders according to claim 1, characterized in that: Four rubber pads (17) are fixedly connected to the sides of the four arc-shaped clamping plates (16) that are close to each other.

3. The special device for testing hydraulic cylinders according to claim 1, characterized in that: The four adjusting threaded rods (14) and the four adjusting nut blocks (15) are all distributed in a ring with equal spacing. The four adjusting nut blocks (15) are slidably connected to the interior of the four adjusting grooves (13).

4. The hydraulic cylinder testing device according to claim 3, characterized in that: A synchronization groove (18) is provided at the middle position of the top wall of the fixed groove (12). The ends of the four adjusting threaded rods (14) that are close to each other extend through the side walls of the four adjusting slide grooves (13) into the synchronization groove (18) and are fixedly installed with four synchronous steering gears (19). The four synchronous steering gears (19) are set in a meshing state.

5. The hydraulic cylinder testing device according to claim 4, characterized in that: An adjustment motor (20) is fixedly installed at the middle of the front wall of the device base (10). The front end of the adjustment threaded rod (14) located at the front side passes through the front wall of the adjustment slide (13) located at the front side and is fixedly installed with the output end of the adjustment motor (20).

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