Testing device for minimum starting pressure of static pressure support actuator

Abstract

The utility model relates to the field of testing devices, and discloses a testing device for the minimum starting pressure of a static pressure supporting actuator, which comprises the static pressure supporting actuator, a supporting assembly is arranged at the bottom end of the static pressure supporting actuator, and a pre-pressing assembly is arranged at the front end of the static pressure supporting actuator. A driving assembly is arranged at the position, close to the left end, of the front end of the static pressure supporting actuator and comprises a starting pressure oil supply oil source, a high-pressure oil pipe A is installed at the rear end of the starting pressure oil supply oil source, and the rear end of the high-pressure oil pipe A is installed at the front end of the static pressure supporting actuator. And a low-pressure oil pipe A is mounted at the rear end of the starting pressure oil supply oil source. According to the utility model, by arranging the pre-pressing assembly, a static pressure bearing can be established for the static pressure support actuator, then the driving assembly is adjusted to drive the static pressure support actuator to start working, and finally the minimum starting pressure of the static pressure support actuator can be measured in cooperation with the measuring assembly and the digital display dial indicator.

Description

TECHNICAL FIELD

[0001] The utility model relates to test device field especially relates to a test device for minimum starting pressure of static pressure support actuator. BACKGROUND

[0002] Static pressure support actuator is a kind of actuator based on static pressure principle work, it forms static pressure oil film in the specific chamber or gap in actuator interior by the pressure oil provided by outside, utilizes the pressure generated by oil film to support load and realizes accurate motion control, forms an oil film with certain pressure between shaft neck and bearing by making shaft neck suspended, so it can greatly reduce friction loss, realizes the relative motion of nearly frictionless.

[0003] At present, in many experiments, the minimum starting pressure value of static pressure support actuator needs to be known to measure the friction resistance of static pressure support actuator to ensure that the friction value does not affect the accuracy of related test, and in the prior art, there is lack of a device that can conveniently and effectively measure the minimum starting pressure of static pressure support actuator, therefore, a test device for minimum starting pressure of static pressure support actuator is proposed to solve the above problems. UTILITY MODEL CONTENT

[0004] In order to make up for the above shortcomings, the utility model provides a test device for minimum starting pressure of static pressure support actuator, which aims to improve the problem of "lack of a device that can conveniently and effectively measure the minimum starting pressure of static pressure support actuator" in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a test device for minimum starting pressure of static pressure support actuator, comprising a static pressure support actuator, a support assembly is arranged at the bottom end of the static pressure support actuator, a pre-pressing assembly is arranged at the front end of the static pressure support actuator, a driving assembly is arranged at the front end of the static pressure support actuator close to the left end position, the driving assembly comprises a starting pressure oil supply oil source, a high-pressure oil pipe A is installed at the rear end of the starting pressure oil supply oil source, the rear end of the high-pressure oil pipe A is installed at the front end of the static pressure support actuator, a low-pressure oil pipe A is installed at the rear end of the starting pressure oil supply oil source, the rear end of the low-pressure oil pipe A is installed at the rear end of the static pressure support actuator, and a measuring assembly is installed on the outer wall of the high-pressure oil pipe A.

[0006] As a further description of the above technical scheme:

[0007] The measuring assembly comprises an overflow valve A, and the overflow valve A is installed on the outer wall of the high-pressure oil pipe A.

[0008] As a further description of the above technical scheme:

[0009] The right end of the overflow valve A is provided with a high-precision digital pressure gauge A, and the rear end of the high-precision digital pressure gauge A is electrically connected with an acquisition system through a digital pressure gauge signal line.

[0010] Further description of the above technical solution:

[0011] The pre-pressing assembly comprises a static pressure bearing oil supply source, the rear end of the static pressure bearing oil supply source is provided with a low-pressure oil pipe B, the rear end of the low-pressure oil pipe B is installed at the rear end of the static pressure support actuator, the rear end of the static pressure bearing oil supply source is provided with a high-pressure oil pipe B near the left end, the rear end of the high-pressure oil pipe B is installed at the front end of the static pressure support actuator, and the outer wall of the low-pressure oil pipe B is provided with a control assembly.

[0012] Further description of the above technical solution:

[0013] The control assembly comprises an overflow valve B, the overflow valve B is installed on the outer wall of the high-pressure oil pipe B, and the right end of the overflow valve B is provided with a high-precision digital pressure gauge B.

[0014] Further description of the above technical solution:

[0015] The right end of the static pressure support actuator output shaft is provided with a digital dial gauge.

[0016] Further description of the above technical solution:

[0017] The support assembly comprises a leveling pad iron, and the top end of the leveling pad iron is installed at the bottom end of the static pressure support actuator.

[0018] Further description of the above technical solution:

[0019] The bottom end of the leveling pad iron is fixedly connected with a working platform.

[0020] The utility model has the advantages of the following beneficial effects:

[0021] 1. In the utility model, the pre-pressing assembly can establish a static pressure bearing for the static pressure support actuator, and then the driving assembly can drive the static pressure support actuator to work, and finally the measurement assembly and the digital dial gauge can be used to measure the minimum starting pressure of the static pressure support actuator, so that the overall device is convenient to use. DRAWINGS

[0022] Figure 1 It is a driving route schematic view of the overall device in the utility model;

[0023] Figure 2 It is a side view schematic view of the support assembly in the utility model.

[0024] Legend:

[0025] 1, static pressure support actuator; 2, leveling pad iron; 3, working platform; 4, starting pressure oil supply source; 5, static pressure bearing oil supply source; 6, overflow valve A; 7, high-precision digital pressure gauge A; 8, overflow valve B; 9, high-precision digital pressure gauge B; 10, low-pressure oil pipe A; 11, high-pressure oil pipe A; 12, high-pressure oil pipe B; 13, low-pressure oil pipe B; 14, digital dial gauge; 15, digital pressure gauge signal line; 16, acquisition system; 17, display. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Referring to Figure 1 and Figure 2 , the present application provides an embodiment: a testing device for the minimum starting pressure of a static pressure support actuator, comprising a static pressure support actuator 1, the bottom end of the static pressure support actuator 1 is provided with a support assembly for supporting the static pressure support actuator 1 so that it remains parallel to the ground, the front end of the static pressure support actuator 1 is provided with a pre-pressing assembly for establishing a static pressure bearing for the static pressure support actuator 1, the front end of the static pressure support actuator 1 is provided with a driving assembly near the left end position for driving the output shaft of the static pressure support actuator 1 to move, the driving assembly comprises a starting pressure oil supply source 4 for providing power for driving the static pressure support actuator 1, the rear end of the starting pressure oil supply source 4 is installed with a high-pressure oil pipe A 11 for transmitting oil, the rear end of the high-pressure oil pipe A 11 is installed at the front end of the static pressure support actuator 1, the rear end of the starting pressure oil supply source 4 is installed with a low-pressure oil pipe A 10 for conveniently returning the driving oil, the rear end of the low-pressure oil pipe A 10 is installed at the rear end of the static pressure support actuator 1, and the outer wall of the high-pressure oil pipe A 11 is installed with a measuring assembly for measuring the output oil pressure.

[0028] Referring to Figure 1, the measuring assembly comprises an overflow valve A6 for controlling the output pressure of the starting pressure oil supply source 4, the overflow valve A6 is installed on the outer wall of the high-pressure oil pipe A11, the right end of the overflow valve A6 is provided with a high-precision digital pressure gauge A7 for measuring the output pressure of the starting pressure oil supply source 4, and the rear end of the high-precision digital pressure gauge A7 is electrically connected with a collection system 16 for collecting oil pressure data signals through a digital pressure gauge signal line 15, and the collection system 16 is electrically connected with a display 17 for displaying numerical values through an electric wire.

[0029] With reference to Figure 1 , the pre-pressing assembly comprises a static pressure bearing oil supply source 5, the rear end of the static pressure bearing oil supply source 5 is provided with a low-pressure oil pipe B13 for returning low-pressure oil, the rear end of the low-pressure oil pipe B13 is installed on the rear end of the static pressure support actuator 1, the rear end of the static pressure bearing oil supply source 5 is provided with a high-pressure oil pipe B12 for inputting high-pressure oil into the static pressure support actuator 1 near the left end, and the rear end of the high-pressure oil pipe B12 is installed on the front end of the static pressure support actuator 1, and the outer wall of the low-pressure oil pipe B13 is provided with a control assembly for controlling the input pressure of the high-pressure oil pipe B12, the control assembly comprises an overflow valve B8 for adjusting the input pressure of the high-pressure oil pipe B12, the overflow valve B8 is installed on the outer wall of the high-pressure oil pipe B12, and the right end of the overflow valve B8 is provided with a high-precision digital pressure gauge B9 for displaying the input pressure of the high-pressure oil pipe B12, and the static pressure bearing can be established by adjusting the pre-pressing assembly and the control assembly, so that the piston rod of the static pressure support actuator 1 is in a liquid suspension state, and then the measurement operation can be performed.

[0030] With reference to Figure 1 and Figure 2 , the right end of the output shaft of the static pressure support actuator 1 is provided with a digital dial gauge 14 for detecting the movement of the piston rod of the static pressure support actuator 1, and in the experiment, the other end of the digital dial gauge 14 needs to be fixed on the surface of the supporting plane, so that the digital dial gauge 14 cannot be moved randomly during measurement, and the supporting assembly comprises a leveling pad iron 2 for adjusting the horizontal position of the static pressure support actuator 1, the top end of the leveling pad iron 2 is installed on the bottom end of the static pressure support actuator 1, and the bottom end of the leveling pad iron 2 is fixedly connected with a work platform 3 for supporting the static pressure support actuator 1.

[0031] Working principle: open the static pressure bearing oil supply oil source 5, provide oil pressure for the static pressure bearing in the static pressure support actuator 1, through the high pressure oil pipe B12, the oil in the static pressure bearing oil supply oil source 5 is transported to the static pressure support actuator 1, and the oil pressure pressure of the static pressure bearing oil supply oil source 5 is adjusted through the overflow valve B8, and the pressure value in the high-precision digital pressure gauge B9 is observed until the set pressure is reached, and then the static pressure bearing is established, so that the piston rod is in a liquid suspension state, in which state the minimum starting friction of the static pressure support actuator 1 can be tested, and at the same time the oil leakage of the static pressure bearing returns to the static pressure bearing oil supply oil source 5 through the low pressure oil pipe B13, and the stroke is closed loop.

[0032] The static pressure support actuator 1 with the static pressure bearing established is placed on the work platform 3 together with the leveling pad 2, the static pressure support actuator 1 is adjusted to be parallel to the ground through the leveling pad 2, and it is observed that the piston rod in the static pressure support actuator 1 will not be deviated to one side due to gravity, so as to prepare for the subsequent starting pressure test.

[0033] When the preparation work is completed, the starting pressure oil supply oil source 4 can be opened to provide starting oil pressure for the static pressure support actuator 1, so that the piston rod moves forward, and the oil supply pressure of the starting pressure oil supply oil source 4 can be controlled by adjusting the overflow valve A6, the collected values are transmitted to the collection system 16 through the digital pressure gauge signal line 15 by the high-precision digital pressure gauge A7, the collected data is screened by the collection system 16, interference is excluded, and more accurate oil supply pressure values are obtained, and finally displayed in the display 17, in the process of pressurizing the static pressure support actuator 1, the value in the digital micrometer 14 needs to be observed at all times, when the value changes, the pressure value in the current display 17 is recorded, which is used as the minimum starting pressure value of the static pressure support actuator 1, and then the excess oil in the system is discharged back to the starting pressure oil supply oil source 4 through the low pressure oil pipe B13, forming a closed loop.

[0034] Finally, it should be pointed out that the above-mentioned is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A testing device for the minimum starting pressure of a hydrostatic support actuator, comprising a hydrostatic support actuator (1), characterized in that: The bottom end of the hydrostatic support actuator (1) is provided with a support component, the front end of the hydrostatic support actuator (1) is provided with a pre-pressure component, and the front end of the hydrostatic support actuator (1) near the left end is provided with a drive component. The drive component includes a starting pressure oil supply source (4). The rear end of the starting pressure oil supply source (4) is equipped with a high-pressure oil pipe A (11). The rear end of the high-pressure oil pipe A (11) is installed at the front end of the hydrostatic support actuator (1). The rear end of the starting pressure oil supply source (4) is equipped with a low-pressure oil pipe A (10). The rear end of the low-pressure oil pipe A (10) is installed at the rear end of the hydrostatic support actuator (1). The outer wall of the high-pressure oil pipe A (11) is equipped with a measuring component.

2. The testing device for the minimum starting pressure of a hydrostatic support actuator according to claim 1, characterized in that: The measuring component includes an overflow valve A (6), which is installed on the outer wall of the high-pressure oil pipe A (11).

3. The testing device for the minimum starting pressure of a hydrostatic support actuator according to claim 2, characterized in that: A high-precision digital pressure gauge A (7) is installed on the right end of the overflow valve A (6). The rear end of the high-precision digital pressure gauge A (7) is electrically connected to the acquisition system (16) through the digital pressure gauge signal line (15). The acquisition system (16) is electrically connected to the display (17) through the wire.

4. The testing device for the minimum starting pressure of a hydrostatic support actuator according to claim 1, characterized in that: The pre-compression assembly includes a hydrostatic bearing oil supply source (5), a low-pressure oil pipe B (13) is installed at the rear end of the hydrostatic bearing oil supply source (5), the rear end of the low-pressure oil pipe B (13) is installed at the rear end of the hydrostatic support actuator (1), a high-pressure oil pipe B (12) is installed near the left end of the rear end of the hydrostatic bearing oil supply source (5), the rear end of the high-pressure oil pipe B (12) is installed at the front end of the hydrostatic support actuator (1), and a control component is provided on the outer wall of the low-pressure oil pipe B (13).

5. The testing device for the minimum starting pressure of a hydrostatic support actuator according to claim 4, characterized in that: The control component includes an overflow valve B (8), which is installed on the outer wall of the high-pressure oil pipe B (12), and a high-precision digital pressure gauge B (9) is installed on the right end of the overflow valve B (8).

6. The testing device for the minimum starting pressure of a hydrostatic support actuator according to claim 1, characterized in that: A digital dial indicator (14) is installed on the right end of the output shaft of the hydrostatic support actuator (1).

7. The testing device for the minimum starting pressure of a hydrostatic support actuator according to claim 1, characterized in that: The support assembly includes a leveling pad (2), the top of which is mounted on the bottom of the hydrostatic support actuator (1).

8. A testing device for the minimum starting pressure of a hydrostatic support actuator according to claim 7, characterized in that: The bottom end of the leveling pad (2) is fixedly connected to the working platform (3).

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