CN219142201U

CN219142201U - Limiting testing device for hydraulic actuating mechanism

Info

Publication number: CN219142201U
Application number: CN202223527019.0U
Authority: CN
Inventors: 张晓丽; 张龙; 岳步江; 焦刚; 何永明; 宋殿光; 周俊; 陈士金
Original assignee: Sichuan Tianshi Hechuang Technology Co ltd
Current assignee: Sichuan Tianshi Hechuang Technology Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-06-06
Anticipated expiration: 2032-12-28

Abstract

The utility model provides a limit testing device of a hydraulic actuating mechanism, which can test the stroke, the output size and the reliability of the hydraulic actuating mechanism plunger, and comprises: the testing device comprises a testing device body, a pressure detection assembly and a limiting assembly, wherein the pressure detection assembly and the limiting assembly overhang the top of an inner frame surface of the testing device body, the testing device body is of a frame body structure as a whole, an arc protrusion matched with an arc surface of a hydraulic actuating mechanism is arranged at the bottom of the inner frame surface of the testing device body, and the arc protrusion is arranged along the width direction of the testing device body; the bottom of the pressure detection component is contacted with a plunger of the hydraulic actuating mechanism, and the output of the plunger under the corresponding stroke is measured; the limiting component is inserted from the top of the outer frame surface of the testing device body and connected with the penetrating pressure detecting component.

Description

Limiting testing device for hydraulic actuating mechanism

Technical Field

The utility model relates to the field of petroleum instrument testing, in particular to a limit testing device for a hydraulic actuating mechanism.

Background

In petroleum drilling type instruments, hydraulic actuators are a common precision component. When the drilling instrument works underground, the plunger of the hydraulic actuating mechanism stretches out to push the rib plates, and the rib plates push against the well wall to enable the instrument to turn, so that the guiding function is realized. The larger the stroke of the plunger of the hydraulic actuating mechanism is, the larger the output is, and the better the instrument guiding performance is. Therefore, the stroke, the output and the mechanism reliability of the plunger of the hydraulic actuating mechanism are important parameters related to whether the instrument can work normally or not, the plunger of the hydraulic actuating mechanism needs to be tested independently before being used, and a hydraulic actuating mechanism testing device for realizing the functions is not available at present.

The appearance structure of the hydraulic actuating mechanism is shown in fig. 1. The plunger is arranged on the working surface of the hydraulic oil pump, and the plunger can be pushed out by pumping high-pressure hydraulic oil into the bottom end of the plunger. The plunger part structure of the hydraulic actuating mechanism is shown in fig. 2, and high-pressure hydraulic oil is pumped into the lower part of the plunger through a motor to push out the plunger during operation.

As can be seen from the figure, a sealing groove is arranged on the plunger of the hydraulic actuating mechanism, and a sealing O ring is arranged on the plunger of the hydraulic actuating mechanism for maintaining the pressure of high-pressure hydraulic oil; when the sealing groove of the plunger of the hydraulic actuating mechanism exceeds the body of the hydraulic actuating mechanism, high-pressure hydraulic oil is in contact with external slurry, high pressure is lost, and the hydraulic actuating mechanism fails.

Thus, the movable limit position of the plunger determines the plunger stroke of the hydraulic actuator. It can be seen from the figure that the plunger of the hydraulic actuator does not have a self-limiting function in order to maximize the travel of the plunger of the hydraulic unit.

When no external structure is limited, the plunger is pushed out by overtravel when the hydraulic actuating mechanism works, the whole plunger is separated from the hydraulic actuating mechanism body, so that sealing failure is caused, and the hydraulic actuating mechanism cannot work.

Disclosure of Invention

The utility model aims to provide a limit testing device for a hydraulic actuating mechanism, which can test the stroke, the output size and the reliability of the hydraulic actuating mechanism of a plunger of the hydraulic actuating mechanism.

Embodiments of the present utility model are implemented as follows:

a limit test device for a hydraulic actuator, the limit test device comprising: the testing device comprises a testing device body, a pressure detection assembly and a limiting assembly, wherein the pressure detection assembly and the limiting assembly overhang the top of an inner frame surface of the testing device body, the testing device body is of a frame body structure as a whole, an arc protrusion matched with an arc surface of a hydraulic actuating mechanism is arranged at the bottom of the inner frame surface of the testing device body, and the arc protrusion is arranged along the width direction of the testing device body; the bottom of the pressure detection component is contacted with a plunger of the hydraulic actuating mechanism, and the output of the plunger under the corresponding stroke is measured; the limiting component is inserted from the top of the outer frame surface of the testing device body and connected with the penetrating pressure detecting component.

In a preferred embodiment of the present utility model, the pressure detecting assembly includes a force sensor and a plunger cover, and the force sensor is fixedly disposed on the testing device body; the center of the bottom of the force sensor is provided with a circular boss, and the surface of the circular boss is a working surface of the force sensor; the center of the annular boss is provided with a threaded hole for the limit component to pass through; cylindrical protrusions matched with the annular bosses are arranged at the top of the plunger cover plate; the bottom surface of plunger apron is provided with the circular counter bore that corresponds with hydraulic unit of hydraulic actuator, and the center of circular counter bore is provided with the circular arch with plunger complex.

In a preferred embodiment of the present utility model, the pressure detecting assembly further includes a force sensor adjusting pad, the force sensor adjusting pad is disposed between the force sensor and the testing device body, and a thickness of the force sensor adjusting pad is replaceable.

In a preferred embodiment of the present utility model, the force sensor adjusting pad, the force sensor and the testing device body are fastened by bolts.

In a preferred embodiment of the present utility model, the side surface of the testing device body is provided with symmetrically arranged rectangular grooves; the plunger cover plate further comprises a balance screw, the balance screw penetrates through the rectangular groove to be connected with the side face of the plunger cover plate, the balance screw is in interference fit with the rectangular groove, and the balance screw can move up and down in the rectangular groove.

In a preferred embodiment of the present utility model, the rectangular groove is vulcanized with rubber inside.

In the preferred embodiment of the utility model, the groove edge of the rectangular groove is provided with scale marks, and when the plunger of the hydraulic actuating mechanism is completely retracted and the plunger cover plate is pressed down to limit, the balance screw points to the zero position of the scale marks.

In a preferred embodiment of the present utility model, the force sensor is externally connected to a controller or a computer.

In a preferred embodiment of the present utility model, the limiting component is a limiting screw, and an external thread of the limiting screw is in threaded connection with a threaded hole in the center of the force sensor.

In a preferred embodiment of the present utility model, a through hole for the limit component to pass through is provided at the top of the testing device body, and the axis of the through hole passes through the center of the circular arc protrusion.

The embodiment of the utility model has the beneficial effects that: the testing device body is matched with the hydraulic actuating mechanism, and the top of the testing device body is provided with a pressure detection assembly which is used for testing the output of a plunger of the hydraulic actuating mechanism and the output of the hydraulic actuating mechanism under different strokes; the middle part of the pressure detection component is provided with a limiting component in a penetrating way, so that a force measuring mode and a limiting mode can be switched; when the hydraulic actuating mechanism stops working, the limiting component can quickly press the plunger back to the initial position; meanwhile, when the hydraulic actuating mechanism stops working, the testing device can press the plunger back because the residual high pressure of the high-pressure hydraulic oil is larger than the external pressure so as to take down the hydraulic actuating mechanism.

Drawings

In order to more clearly illustrate the technical aspects of the embodiments of the present utility model, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the drawings below only illustrate some embodiments of the present utility model and therefore should not be construed as limiting the scope of the present utility model to those of ordinary skill in the art

Other 5-related drawings can also be obtained from these drawings without the inventive effort.

FIG. 1 is a schematic diagram of a hydraulic actuator according to an embodiment of the present utility model;

FIG. 2 is a partial cross-sectional view of a hydraulic actuator plunger according to an embodiment of the present utility model;

FIG. 3 is an isometric view of a hydraulic actuator testing apparatus according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a testing device body according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a force sensor adjusting pad according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a force sensor according to an embodiment of the present utility model;

FIGS. 7 and 8 are schematic views of plunger cover plate structures according to embodiments of the present utility model;

FIG. 9 is a cross-sectional view of a limit screw of a limit test device in accordance with an embodiment of the present utility model;

fig. 10 is a cross-sectional view 5 of a limit mode of the limit test device according to an embodiment of the present utility model.

Icon: 001-hydraulic actuator; 002-plunger; 100-limit testing device; 110-a testing device body; 120-a pressure detection assembly; 130-a limiting assembly; 111-arc protrusions; 112-a first via; 113-a first threaded hole; 114-rectangular grooves; 121-force sensor adjustment shims; 122-force

A sensor; 123-plunger cover plate; 124-balancing screws; 125-fixing screws; 121-1-a second via; 0 121-2-third via; 122-1-circular boss; 122-2-a second threaded hole; 122-3-fourth pass

A hole; 123-1-cylindrical protrusions; 123-2-circular counter bore; 123-3-circular protrusions; 123-4-a third threaded hole; 124-balancing screws; 131-limit screw.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be

Communication between the interiors of the two elements. It will be apparent to those skilled in the art that the specific meaning of the terms described above in the present utility model may be understood in detail 5.

First embodiment

Referring to fig. 3, the present embodiment provides a hydraulic actuator limit test device, and the limit test device 100 includes: the testing device comprises a testing device body 110, a pressure detection assembly 120 and a limiting assembly 130, wherein the pressure detection assembly 120 is hung on the top of the inner frame surface of the testing device body 110.

Referring to fig. 4, the test device body 110 has a rectangular frame structure with rounded corners

The bottom of the inner frame surface of the device body 110 is provided with an arc protrusion 111 matching with the arc surface of the hydraulic actuator 001, and the arc protrusion 111 is arranged along the width direction of the testing device body 110, specifically, the arc protrusion in the embodiment is a semicircular arc protrusion.

The top of the testing device body 110 is provided with a first through hole 112,5 for the limiting component 130 to pass through, the axis of the first through hole 112 passes through the circle center of the bottom circular arc protrusion 111, and the annular side of the first through hole 112

A plurality of annular arrays of first threaded bores 113 are provided for mounting the pressure sensing assembly 120.

A rectangular groove 114 is symmetrically arranged on the side surface of the testing device body 110, and graduation marks are carved on the groove edge;

the rectangular groove 114 is vulcanized with rubber inside.

The pressure sensing assembly 120 includes a force sensor adjustment pad 121, a force sensor 0 122, and a plunger cover 123 connected in sequence.

Specifically, referring to fig. 5, the force sensor adjusting pad 121 is a circular pad, and a second via hole 121-1 matching the first via hole 112 in position and size is provided in the middle of the force sensor adjusting pad 121; the ring side of the second via hole 121-1 is provided with a third via hole 121-2 having a size matching the position of the first threaded hole 113.

Referring to fig. 6, the force sensor 122 is a cylinder, a circular boss 122-1 is arranged at the bottom center of the force sensor 122, and the surface of the circular boss 122-1 is a working surface of the force sensor 122; a second threaded hole 122-2 is provided in the center of the force sensor 122, and fourth vias 122-3 distributed in an annular array are provided on the annular side of the second threaded hole 122-2. The fixing screw 125 passes through the fourth via hole 122-3 and the third via hole 121-2 in sequence and then is fixedly connected with the first threaded hole 113 of the testing device body 110.

The force sensor 122 is externally connected with a controller and a computer for obtaining data.

Referring to fig. 7 and 8, a cylindrical protrusion 123-1 matching with the circular boss 122-1 of the force sensor 122 is provided on the top of the plunger cover 123; the bottom surface of the plunger cover plate 123 is provided with 2 circular counter bores 123-2 corresponding to the hydraulic units of the hydraulic actuator 001, and the center of the circular counter bores 123-2 is provided with a circular protrusion 123-3 matched with the plunger 002. The circular counter bore 123-2 and the circular bulge 123-3 in the middle of the circular counter bore 123-2 form a circular groove for avoiding crushing the protective rubber sleeve on the outer side of the plunger 002 of the hydraulic actuator, and the bulge is used for being matched with the plunger 002.

Third screw holes 123-4 are provided at both sides of the plunger cover 123 for mounting the balance screw 124. The balance screw 124 is threaded with the side surface of the plunger cover 123 after passing through the rectangular groove 114, and the balance screw 124 is in interference fit with the rectangular groove 114, so that the balance screw 124 can move up and down in the rectangular groove 114. Specifically, the balance screw 124 is provided with external threads, and is matched with the threaded hole on the side surface of the plunger cover plate 123; the unthreaded portion of the balance screw 124 has an outer diameter slightly greater than the width of the test device side rectangular channel 114 after vulcanization of the rubber, allowing for an interference fit.

The limiting assembly 130 is a limiting screw 131, and the limiting screw 131 is provided with external threads and is matched with the threaded hole of the force sensor 122.

The connection relation of the hydraulic actuator 001 test device is as follows:

a cross-sectional view of the test device at the stop screw 131 is shown in fig. 9.

As can be seen from the isometric view of the testing device of fig. 3 and the sectional view of the testing assembly of fig. 9, the force sensor 122 is suspended and mounted on the upper part of the inner frame surface of the testing device body 110, and a force sensor adjusting pad 121 is arranged between the force sensor 122 and the testing device body 110. After passing through the force sensor 122 and the force sensor adjusting pad 121 in order, the fixing screw 125 is screwed with the testing device body 110, and the force sensor 122 is fixed on the testing device body 110.

The hydraulic actuator 001 of the external device is placed on the arc-shaped bulge 111 of the lower frame of the testing device body 110, the plunger cover plate 123 is placed at the plunger 002 of the hydraulic actuator 001, and the circular bulge 123-3 of the plunger cover plate 123 is matched with the plunger 002 of the hydraulic actuator 001 for positioning and placement.

After passing through the rectangular groove 114 of the side frame of the testing device body 110, the balance screw 124 is screwed with the threaded hole of the plunger cover 123. The heads of the balance screws 124 are slightly spaced from the outside of the testing device body 110 so that the plunger cover 123 can be moved up and down while being kept horizontal. The balance screw 124 is in interference fit with rubber inside the rectangular frame on the side surface of the testing device body 110, so that the testing device body can be kept at a certain position when no external force acts.

The outer side of the side frame of the testing device body 110 is provided with scales, and when the plunger 002 of the hydraulic actuating mechanism 001 is completely retracted and the plunger cover plate 123 is pressed downwards to limit, the balance screw 124 points to the zero position of the scales. At this time, the distance between the upper protrusion of the plunger cover 123 and the working surface of the force sensor 122 is the stroke of the plunger 002.

The stroke can be adjusted by adjusting the thickness of the force sensor adjusting gasket 121 so as to meet the requirement of measuring the 002 output force of the hydraulic actuator under different strokes.

Working mode

1. Limit mode

The stop screw 131 is screwed down beyond the active surface of the force sensor 122, at which point the device switches to the stop mode, as shown in fig. 10.

The plunger cover plate 123 is moved up to the highest position, and the hydraulic actuator 001 is pushed into place along the arc-shaped bulge 111 on the bottom surface; the plunger cover 123 is moved down into contact with the plunger 002. The hydraulic actuator 001 works, the plunger 002 extends to push the plunger cover 123 out to the position of the limit screw 131, the travel is limited, and at this time, the reliability of the hydraulic actuator 001 can be tested.

After the test is finished, the hydraulic oil below the plunger 002 still has residual high pressure and cannot return automatically. And (5) continuously screwing down the limit screw 131, pushing the plunger cover plate 123 to press the plunger 002 back to the zero position, taking out the hydraulic unit, and ending the test.

By adjusting the initial position of the limit screw 131, the limit stroke of the plunger 002 can be adjusted.

2. Force measuring model

The stop screw 131 is screwed up beyond the active surface of the force sensor 122, at which point the device switches to the load mode, as shown in fig. 9.

The plunger cover plate 123 is moved up to the highest position, and the hydraulic actuating mechanism 001 is pushed into place along the semicircular bulge on the ground; the plunger cover 123 is moved down into contact with the plunger 002. The hydraulic actuator 001 is operated, and the plunger 002 is extended to push the plunger cover 123 upward to the position of the force sensor 122, and at this time, the output of the hydraulic actuator 001 at the time of the stroke of the plunger 002 can be measured. By adjusting the thickness of the force sensor adjustment pad 121, the force exerted by the hydraulic actuator 001 at different strokes can be measured.

When the stroke is adjusted to the limit stroke of the hydraulic actuator 001, the output and reliability of the hydraulic actuator 001 at the limit stroke can be measured.

The beneficial effects are that:

1. the device has a limiting function and an adjustable limiting stroke;

2. the hydraulic actuator 001 has the function of testing the 002 output of the plunger;

3. the device has the function of testing the output force of the hydraulic unit under different strokes;

4. the force measuring mode or the limit-only mode can be switched;

5. when the hydraulic actuator 001 stops working, the plunger 002 can be quickly pressed back to the initial position;

6. when the hydraulic actuator 001 stops working, the testing device can press the plunger 002 back because the residual high pressure of the high-pressure hydraulic oil is larger than the external pressure so as to take down the hydraulic actuator 001.

This description describes examples of embodiments of the utility model and is not intended to illustrate and describe all possible forms of the utility model. It should be understood that the embodiments in the specification may be embodied in many alternate forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Specific structural and functional details disclosed are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present utility model. Those skilled in the art will appreciate that a plurality of features illustrated and described with reference to any one drawing may be combined with features illustrated in one or more other drawings to form embodiments not explicitly illustrated or described. The illustrated combination of features provides representative embodiments for typical applications. However, various combinations and modifications of the features consistent with the teachings of the present utility model may be used in particular applications or implementations as desired.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a spacing testing arrangement of hydraulic actuator, its characterized in that, spacing testing arrangement includes: the testing device comprises a testing device body, wherein the whole testing device body is of a frame structure, an arc protrusion matched with an arc surface of the hydraulic actuating mechanism is arranged at the bottom of an inner frame surface of the testing device body, and the arc protrusion is arranged along the width direction of the testing device body;

the pressure detection assembly is suspended at the top of the inner frame surface of the testing device body, the bottom of the pressure detection assembly is in contact with the plunger of the hydraulic actuating mechanism, and the output of the plunger under the corresponding stroke is measured;

and the limiting assembly is inserted from the top of the outer frame surface of the testing device body and is connected with and penetrates through the pressure detection assembly.

2. The hydraulic actuator limit test device of claim 1, wherein the pressure detection assembly comprises:

the force sensor is fixedly arranged on the testing device body; the center of the bottom of the force sensor is provided with a circular boss, and the surface of the circular boss is a working surface of the force sensor; the center of the annular boss is provided with a threaded hole through which the limiting assembly passes;

the top of the plunger cover plate is provided with a cylindrical bulge matched with the annular boss; the bottom surface of plunger apron is provided with the circular counter bore that corresponds with hydraulic actuator's hydraulic unit, the center of circular counter bore is provided with the circular arch with plunger complex.

3. The hydraulic actuator limit test device of claim 2, wherein the pressure detection assembly further comprises a force sensor adjustment shim disposed between the force sensor and the test device body, the force sensor adjustment shim having a thickness that is replaceable.

4. The hydraulic actuator limit test device of claim 3, wherein the force sensor adjustment pad, the force sensor, and the test device body are connected by bolting.

5. The hydraulic actuator limit test device according to claim 2, wherein the side surface of the test device body is provided with symmetrically arranged rectangular grooves; the plunger cover plate further comprises a balance screw, the balance screw penetrates through the rectangular groove to be connected with the side face of the plunger cover plate, the balance screw is in interference fit with the rectangular groove, and the balance screw can move up and down in the rectangular groove.

6. The hydraulic actuator limit test device of claim 5, wherein rubber is vulcanized inside the rectangular groove.

7. The hydraulic actuator limit test device according to claim 5 or 6, wherein the slot edge of the rectangular slot is provided with graduation marks, and when the hydraulic actuator plunger is fully retracted and the plunger cover plate is pressed down to limit, the balance screw points to the zero position of the graduation marks.

8. The hydraulic actuator limit test device of claim 2, wherein the force sensor is externally connected to a controller or a computer.

9. The hydraulic actuator limit test device of claim 2, wherein the limit assembly is a limit screw, and the external thread of the limit screw is in threaded connection with the threaded hole in the center of the force sensor.

10. The hydraulic actuator limit test device according to claim 1, wherein a through hole for the limit component to pass through is formed in the top of the test device body, and the axis of the through hole passes through the center of the circular arc protrusion.