CN111734716A - A three-chamber hydraulic cylinder test bench - Google Patents

Abstract

The application of the present invention belongs to the technical field of hydraulic equipment, and specifically discloses a three-chamber hydraulic cylinder test bench, which includes a base, a column, a beam, a guide device, a lower fixed seat, a heavy object, and a three-chamber hydraulic cylinder. There is a row of T-shaped hydraulic cylinders on the base. A column is fixed at one end of the base, and a guide device of a three-chamber hydraulic cylinder is also fixed on the base. One end of the beam is hinged with the column on the base, and the other end is hinged with the weight; the column and the beam are each provided with a row of threaded holes. The present invention can realize the loading of different weights and hydraulic cylinders with different strokes through lever and gear adjustment; the loading of different weights can be realized by changing the hinged position of the three-chamber hydraulic cylinder and the beam, and the hinged position of the beam and the column can be It can realize the gravity loading test of oil cylinders of different lengths, and can simulate real working conditions such as three-chamber hydraulic cylinders, excavator luffing cylinders, etc.

Description

A three-chamber hydraulic cylinder test bench

technical field

The invention belongs to the technical field of hydraulic equipment, and specifically discloses a three-chamber hydraulic cylinder test bench.

Background technique

At present, many machines use hydraulic cylinders to lift heavy objects, especially in construction machinery such as truck cranes and excavators, hydraulic cylinders are commonly used to lift heavy objects, and the potential energy of the device itself is wasted when it falls, and three The combination of the cavity hydraulic cylinder and the accumulator can recover the gravitational potential energy of its own device. Since the three-chamber hydraulic cylinder is currently used in excavators and pumping units, there are relatively few or even no test equipment for the three-chamber hydraulic cylinder. The test can only be carried out on the excavator. The test bench can test the performance and quality of the three-chamber hydraulic cylinder, and can also be used to simulate the potential energy recovery test.

SUMMARY OF THE INVENTION

In view of this, the present invention provides a three-chamber hydraulic cylinder test bench, which has a simple structure and can be loaded with different weights and tested by three-chamber hydraulic cylinders with different strokes through lever and gear adjustment.

A three-chamber hydraulic cylinder test bench, the test bench comprises a base, a column, a beam, a guide device, a weight, and a three-chamber hydraulic cylinder;

There is a row of T-shaped grooves on the base, which is convenient for the column, the guide device, the lower fixing seat, and the three-chamber hydraulic cylinder to be fixed on the base, and can also be moved left and right and forward and backward;

One end of the column is fixedly connected with the T-shaped groove of the base, and there is a row of threaded holes on the column, which can adjust the hinged position of the beam and the column, and can test three-chamber hydraulic cylinders with different strokes;

One end of the beam is hinged with the upright column, and some threaded holes are opened at the appropriate position of the beam, and the loading test of different weights can be realized by the hinged connection of the three-chamber hydraulic cylinder and the different threaded holes on the beam;

The lower end of the guide device is fixedly connected with the base through bolts, and the guide device clamps the oil cylinder through six special screws, which can provide a guiding function for the oil cylinder;

The heavy object is fixedly connected with one end of the beam. Due to the limited test conditions, the test weight cannot be too heavy, so a row of threaded holes is opened in the beam, so that the test of different heavy objects can be realized through the principle of leverage, and there is no need to replace the heavy objects. , the test is convenient;

Beneficial effects:

(1) The present invention can realize the loading of different weights and hydraulic cylinders with different strokes by using the lever principle and gear adjustment; by changing the hinge position of the three-chamber hydraulic cylinder and the beam, different weights can be loaded. The hinged position can realize the gravity loading test of the cylinders of different lengths, and the installation is simple and reliable.

(2) The experimental bench of the present invention also has a guiding device. The guiding device clamps the oil cylinder through six special screws, which can provide a guiding function for the oil cylinder and ensure the stability of the tested three-chamber hydraulic cylinder during the experiment. Prevent the hydraulic cylinder under test from generating eccentric load force, thereby ensuring the safety of the experiment.

Description of drawings

1 is a structural diagram of a three-chamber hydraulic cylinder test bench of the present invention;

Fig. 2 is a top view of a three-chamber hydraulic cylinder test bench;

Fig. 3 is the front view of the guide device;

Figure 4 is a top view of the guide device;

Among them, 1-column, 2-guide device, 3-lower fixed seat, 4-beam, 5-three-chamber hydraulic cylinder, 6-weight, 7-base;

Detailed ways

Below in conjunction with the accompanying drawings and examples, the present invention is described in detail;

As shown in Figure 1 and Figure 2, the present invention provides a three-chamber hydraulic cylinder test bench, the test bench comprises a column (1), a guide device (2), a lower fixing seat (3), a beam (4) ), three-chamber hydraulic cylinder (5), weight (6), base (7);

There is a row of T-shaped grooves on the base (7), which is convenient for the column (1), the guide device (2), and the three-chamber hydraulic cylinder (5) to be fixed on the base, and can also be moved left and right and back and forth, which is convenient for the disassembly of the experimental device. and install.

There is a row of threaded holes on the top of the column (1), which can adjust the hinged position of the beam (4) and the column (1). There are threaded holes on the top, and the steel plate and the T-slot are connected together with bolts, so that the column can be fixed on the base, and the disassembly and assembly are convenient.

One end of the beam (4) is hinged with the column, and can rotate up and down around the bolt. When the three-chamber hydraulic cylinder (5) is extended, the beam rotates upward, and when retracted, the beam rotates downward, and some threaded holes are opened at the appropriate positions of the beam, and the three-chamber hydraulic cylinder (5) is extended. If the earring of the cavity cylinder is connected with the threaded hole away from the heavy object, a relatively large heavy load test can be realized. On the contrary, the load test of different weights can be realized by the hinged connection between the three-chamber hydraulic cylinder and the different threaded holes on the beam.

The guide device (2) consists of a hollow cylinder with four threaded holes and a bracket, one end of the bracket is welded with the surface of the cylinder, and the other end is connected by the threaded hole and the T-slot of the base (7), through four special The screw clamps the oil cylinder and provides a guiding function for the oil cylinder.

Installation relationship: the base (7) is fixed to the ground, connected together by bolts and T-slots on the base, the beam (4) is hinged to the column (1) by bolts, and the beam can be adjusted according to the stroke of the tested three-chamber hydraulic cylinder. Select the appropriate threaded hole to meet the experimental requirements, the upper earring of the three-chamber hydraulic cylinder (5) and the threaded hole of the beam are hinged together, and the lower earring and the fixed seat on the base are hinged together, which can change the three-chamber hydraulic cylinder and the beam. Hinged threaded holes, so that different heavy-load tests can be realized. The guide device is hinged and fixed by the lower end of the bracket and the base. The cylinder is clamped by six special screws, which can provide a guiding function for the cylinder and ensure the three-chamber test. The stability of the hydraulic cylinder during the experiment prevents the hydraulic cylinder under test from generating eccentric load force, thereby ensuring the safety of the experiment.

Working principle: The two earrings of the three-chamber hydraulic cylinder (5) are installed on the beam and the fixed seat through the pins. By adjusting the hinge position of the three-chamber hydraulic cylinder and the beam (4), the three-chamber hydraulic cylinder is tested for a certain period of time. In the reciprocating motion performance test, loading performance test and pressure resistance performance test, etc., according to the size of different three-chamber hydraulic cylinders, by adjusting the hinge position of the beam (4) and the column (1), three-chamber hydraulic cylinders of different lengths can be realized. installation.

The beam and the fixed seat of the test bench of the present invention can be manufactured according to different installation forms of the three-chamber hydraulic cylinder to be tested.

The base of the invention is to fix a whole large thick iron plate with a T-shaped groove on the ground, and the structure is relatively stable; through the lever principle and gear adjustment, different weight loads and different strokes of hydraulic cylinders can be tested, and the versatility is relatively high. Strong; the structure of the test bench is relatively simple, the installation is also easy, and the operation and implementation are more convenient; this test bench was invented for the test of the three-chamber hydraulic cylinder, in fact, it can also be extended to the load test of ordinary oil cylinders.

To sum up, the above are only preferred examples of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (4)

1. A three-cavity hydraulic cylinder test bed comprises a stand column (1), a guide device (2), a lower fixed seat (3), a cross beam (4), a three-cavity hydraulic cylinder (5), a heavy object (6) and a base (7);

a row of T-shaped grooves are formed in the base (7), so that the upright posts (1), the guide device (2) and the three-cavity hydraulic cylinder (5) can be conveniently fixed on the base and can move left and right and back and forth;

one end of the upright post (1) is fixedly connected with the T-shaped groove of the base (7), a row of threaded holes are formed in the upright post, the position where the cross beam (4) is hinged with the upright post can be adjusted, and three-cavity hydraulic cylinders with different strokes can be tested;

one end of the cross beam (4) is hinged with the upright post (1), a plurality of threaded holes are formed in the proper position of the cross beam, and loading tests with different weights can be realized by hinging the three-cavity hydraulic cylinder with different threaded holes in the cross beam;

the guide device (2) is composed of a hollow cylinder with 4 threaded holes and a support, one end of the support is welded with the surface of the cylinder, the other end of the support is connected with a T-shaped groove of a base through the threaded holes, the support is composed of two upright columns, a row of threaded holes are formed in the upright columns, the guide device is suitable for guiding the hydraulic cylinders with three cavities and different lengths, the oil cylinders are clamped through four special screws, and the guide device can provide a guide effect for the oil cylinders.

The installation relation is as follows: base (7) and ground are fixed, link together through bolt and T type groove on the base, crossbeam (4) are together articulated through bolt and stand, the crossbeam can select suitable screw hole according to the stroke of the three chamber pneumatic cylinders of being tested, in order to satisfy the experimental requirement, the last earrings of three chamber pneumatic cylinders and the screw hole of crossbeam are together articulated, the lower earrings is together articulated with the fixing base on base (7), can change three chamber pneumatic cylinders and crossbeam (4) articulated screw hole, just so can realize the test of different heavy loads, guider (2) are fixed by support lower extreme and base are articulated, press from both sides tightly the hydro-cylinder through four special screws, can provide the guide effect for the hydro-cylinder.

2. The three-cavity hydraulic cylinder test bed according to claim 1, wherein a row of T-shaped grooves are formed in the base, so that the upright posts (1), the guide device (2) and the three-cavity hydraulic cylinder (5) can be conveniently fixed on the base (7), and the three-cavity hydraulic cylinder test bed can move left and right and back and forth, is simple in structure and is convenient to disassemble and assemble.

3. The three-cavity hydraulic cylinder test bed as claimed in claim 1, wherein the columns and the beams are provided with a row of threaded holes, and hydraulic cylinders with different weights and strokes can be loaded for testing according to lever and gear adjustment.

4. The three-cavity hydraulic cylinder test bed according to claim 1, wherein the test bed further comprises a guide device, the guide device (2) comprises a hollow cylinder with four threaded holes and a support, one end of the support is welded with the surface of the cylinder, the other end of the support is connected with a T-shaped groove of the base through the threaded holes, the oil cylinder is clamped through six special screws, a guide effect is provided for the oil cylinder, the stability of the tested three-cavity hydraulic cylinder in the test process is ensured, the tested hydraulic cylinder is prevented from generating unbalance loading force, and therefore the safety of the test is ensured.

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