CN113431770A

CN113431770A - Measuring tool, measuring method and cylinder body gasket debugging method

Info

Publication number: CN113431770A
Application number: CN202110883551.7A
Authority: CN
Inventors: 汪立平; 胡静; 刘小雄; 史伟东; 董可
Original assignee: Jiangsu Hengli Hydraulic Technology Co Ltd
Current assignee: Jiangsu Hengli Hydraulic Technology Co Ltd
Priority date: 2021-08-03
Filing date: 2021-08-03
Publication date: 2021-09-24
Anticipated expiration: 2041-08-03
Also published as: CN113431770B

Abstract

The invention relates to the technical field of hydraulic pressure, in particular to a measuring tool, a measuring method and a cylinder body gasket debugging method. The method comprises the following steps: the positioning assembly comprises a driving piece for driving the cylinder body and a positioning seat for limiting the driving piece, the positioning seat is assembled on the shell, the positioning seat tightly presses the driving piece to enable the driving piece to be located at a first position, and when the driving piece is located at the first position, the position of the cylinder body is the same as the position formed by pressing the cylinder body after the end cover is assembled; the pushing piece penetrates through the positioning seat to push the driving piece, the driving piece pushes the cylinder body to move towards the central rod, so that the gasket in the cylinder body is in contact with the central rod, and the driving piece is located at a second position; and the measuring piece is used for measuring and calculating the axial distance S between the first position and the second position of the driving piece, namely the axial distance S is the clearance D between the end surface of the central rod and the gasket. The technical problems that in the prior art, the gap between the center rod and the gasket cannot be accurately measured, and the adjustment precision of the gasket is low are solved.

Description

Measuring tool, measuring method and cylinder body gasket debugging method

Technical Field

The invention relates to the technical field of hydraulic pressure, in particular to a measuring tool, a measuring method and a cylinder body gasket debugging method.

Background

In engineering hydraulic machinery, a plunger machine is an important component mechanism, the volume in a working cavity is changed by reciprocating a plunger in a cylinder body, so that oil absorption and oil pressing are realized, and the plunger machine has the advantages of compact structure, high efficiency and the like, and is widely applied to various occasions.

The existing plunger machine, especially the inclined shaft plunger machine, is provided with a cylinder body in a shell, a central hole is formed in the center of the cylinder body, plunger holes are axially distributed in the central hole, a plunger is assembled in the plunger hole in a sliding manner, one end of a central rod is assembled in the central hole in a sliding manner, and the other end of the central rod extends out of the central hole to form a ball head which is movably matched with a ball socket on a main shaft; the one end of well core rod that stretches into in the centre bore passes through elastic component and cylinder body cooperation, in order to reduce friction, increase of service life, the hole bottom department of the centre bore of cylinder body is equipped with the gasket, and the both ends of elastic component act on well core rod and gasket respectively, and under the effect of elastic component, the cylinder body is supported tightly on the valve plate, and the valve plate is compressed tightly on the end cover of shell. In order to ensure the normal work of the plunger machine, a certain gap needs to be reserved between the central rod and the gasket, if the gap is too small, under the condition that the working time of the inclined shaft plunger machine is longer, all parts are heated to expand, and the central rod, the gasket and the cylinder body can expand to form a dead point, so that the displacement of the plunger machine cannot be changed; if this clearance is too big, then the leakage quantity grow in the course of the work, and efficiency reduces, still can have the risk of dashing out the oil blanket. Therefore, during assembly of the inclined shaft plunger machine, hot charging is needed, and after assembly, the gap between the central rod and the gasket needs to be detected so as to accurately control the gap between the central rod and the gasket and ensure normal operation of the inclined shaft plunger machine.

In order to control the gap between the central rod and the gaskets, the thickness of the gaskets is often adjusted, in the prior art, the gaskets with different thicknesses are often selected according to experience, the gap between the central rod and the gaskets cannot be accurately measured, real-time adjustment is performed according to a measurement result, and the adjustment precision is low.

Disclosure of Invention

In order to solve the technical problems that the gap between a central rod and a gasket cannot be accurately measured and the adjustment precision of the gasket is low in the prior art, the invention provides a measuring tool, a measuring method and a cylinder gasket debugging method, and the technical problems are solved. The technical scheme of the invention is as follows:

the utility model provides a measure frock for measure clearance D between well core rod terminal surface of plunger machine and the gasket, include:

the positioning assembly comprises a driving piece for driving the cylinder body and a positioning seat for limiting the driving piece, the positioning seat is assembled on the shell, the positioning seat tightly presses the driving piece to enable the driving piece to be located at a first position, and when the driving piece is located at the first position, the position of the cylinder body is the same as the position formed by abutting against the cylinder body after the end cover is assembled;

the pushing piece penetrates through the positioning seat to push the driving piece, the driving piece pushes the cylinder body to move towards the central rod, so that the gasket in the cylinder body is in contact with the central rod, and the driving piece is located at a second position;

and the measuring piece is used for measuring and calculating the axial distance S between the first position and the second position of the driving piece, namely the axial distance S is the clearance D between the end surface of the central rod and the gasket.

According to the measuring tool, the driving piece can be tightly pressed through the positioning seat, the driving piece tightly presses the cylinder body, and when the driving piece is located at the first position, the position of the cylinder body is communicated with the position where the end cover is assembled and then abuts against the cylinder body; the driving piece can be pushed by the pushing piece, the driving piece pushes the cylinder body to move towards the central rod, the gasket is in contact with the central rod, the driving piece is located at the second position at the moment, the gap D between the gasket and the end face of the central rod is eliminated due to the fact that the driving piece moves from the first position to the second position, the gap D can be obtained by measuring and calculating the axial distance S between the first position and the second position, the measurement and calculation of the gap D between the end face of the central rod of the plunger machine and the gasket are simplified, the operation is convenient, and the measurement and calculation are simple and convenient.

According to one embodiment of the invention, the positioning seat is mounted on the shell at intervals, and the positioning seat and the shell are separated by a spacer.

According to an embodiment of the present invention, the positioning seat is assembled on the housing through at least two fixing members, the spacing member is sleeved on at least two fixing members, and two ends of the spacing member respectively abut against the housing and the positioning seat.

According to an embodiment of the invention, a positioning hole is formed on the positioning seat, a first protrusion extends from an end surface of the driving member close to the positioning seat, the first protrusion extends into the positioning hole, and the pushing member abuts against the first protrusion to push the driving member.

According to one embodiment of the invention, the positioning hole is located in the middle of the positioning seat, the first protrusion is located in the middle of the driving part, and the pushing part is in threaded fit with the positioning hole.

According to an embodiment of the invention, a measuring hole is further formed on the positioning seat, a measuring end of the measuring part abuts against the driving part through the measuring hole to measure, and the driving part is in surface contact with the positioning seat.

According to one embodiment of the invention, the driving member is pressed against a port plate of the plunger machine, and a second protrusion extends from an end surface of the driving member close to the port plate, and the second protrusion can penetrate through the port plate and extend into a cylinder bottom of the cylinder body so as to drive the port plate and the cylinder body to move coaxially.

A measuring method is used for obtaining a gap D between the end face of a center rod of a plunger machine and a gasket, and the measuring tool comprises the following steps:

a1, removing an end cover of the plunger machine;

a2, a driving piece and a positioning seat are sequentially pressed on the outer side of the port plate;

a3, adjusting and fixing the position of the positioning seat to enable the driving piece to be located at the first position, and then fixedly assembling the positioning seat on the shell;

a4, pushing the driving piece by the pushing piece, pushing the port plate and the cylinder body to move axially by the driving piece until the gasket is contacted with the central rod, and then, positioning the driving piece at a second position;

and A5, measuring and calculating the axial gap S between the first position and the second position, namely the gap D between the end surface of the central rod and the gasket.

According to an embodiment of the present invention, the step a5 of measuring and calculating the axial gap S between the first position and the second position includes: the positioning seat is provided with a measuring hole, when the driving part is positioned at the first position, the measuring part penetrates through the measuring hole to abut against the driving part, and the distance S1 from the driving part to the end face, far away from the driving part, of the positioning seat is measured; when the driving piece is located at the second position, the measuring piece passes through the measuring hole to abut against the driving piece, and the distance S2 from the driving piece to the end face, far away from the driving piece, of the positioning seat is measured, wherein S is S2-S1.

A cylinder body gasket debugging method comprises the following steps:

b1, completing the assembly of the plunger machine;

b2, obtaining the clearance D between the end surface of the central rod of the plunger machine and the gasket by using the measuring method of any one of claims 8-9;

b3, judging whether D is in a required range, if so, not replacing the gasket; if not, the shim with different thickness is replaced.

According to an embodiment of the present invention, in step B3, if D is greater than the upper limit of the required range, the gasket with a thickness greater than that of the original gasket needs to be replaced; when D is smaller than the lower limit value of the required range, the gasket with the thickness smaller than that of the original gasket needs to be replaced.

According to one embodiment of the invention, the fitting of the gasket to the cylinder comprises:

c1, the gasket penetrates into the central hole from the bottom of the central hole of the cylinder body;

c2, rotating the gasket to enable the gasket to be overlapped with at least two positions of the hole bottom of the central hole of the cylinder body;

c3, fixing the overlapped part; or, the plugging piece is used for sealing at least part of the hole bottom of the central hole so as to prevent the gasket from falling out of the hole bottom of the central hole.

According to one embodiment of the invention, the outer periphery of the gasket extends radially outwards with at least two outer protrusions, the central hole bottom of the cylinder extends radially with at least two inner protrusions, and the gasket is not larger than the size of the opening of the central hole bottom of the cylinder.

Based on the technical scheme, the invention can realize the following technical effects:

1. according to the measuring tool, the driving piece can be tightly pressed through the positioning seat, the driving piece tightly presses the cylinder body, and when the driving piece is located at the first position, the position of the cylinder body is communicated with the position where the end cover is assembled and then abuts against the cylinder body; the pushing piece can push the driving piece and the driving piece to push the cylinder body to move towards the central rod, the gasket is in contact with the central rod, the driving piece is located at the second position at the moment, the gap D between the gasket and the end face of the central rod is eliminated due to the fact that the driving piece moves from the first position to the second position, the gap D can be obtained by measuring and calculating the axial distance S between the first position and the second position, the measurement and calculation of the gap D between the end face of the central rod of the plunger machine and the gasket are simplified, the operation is convenient, and the measurement and calculation are simple and convenient;

2. according to the measuring tool, the positioning seat and the shell are separated by the spacing piece, the distance from the positioning seat to the shell can be controlled by controlling the axial size of the spacing piece, so that the positioning seat can tightly press the driving piece to be located at the first position, and the driving piece can tightly press the cylinder body to be located at the position formed by the cylinder body after the end cover is assembled; a spacing part is further arranged to be sleeved on the fixing part, and an assembling structure is not required to be additionally arranged among the spacing part, the shell and the positioning seat, so that the structure is simplified, and the volume is reduced;

3. according to the measuring tool, the first bulge and the second bulge are formed on the driving piece and respectively extend into the positioning seat and the cylinder body, so that the driving piece and the cylinder body can be ensured to always keep axial movement under the driving of the pushing piece, and radial deviation cannot occur; the pushing piece is in threaded fit with the positioning hole of the positioning seat, so that the position of the pushing piece can be accurately controlled, self-locking of the pushing piece on the positioning seat can be realized, and the measuring piece can be conveniently used for measuring the moving displacement of the driving piece; in addition, the measuring hole is arranged in a deviating way from the positioning hole, so that the measuring part can conveniently extend into the measuring hole to abut against the driving part for measurement, and the measuring precision is high;

4. according to the measuring method, the positioning seat is assembled, the positioning seat tightly presses the driving piece to enable the driving piece to be located at the first position, then the pushing piece pushes the driving piece to enable the driving piece to push the cylinder body and the gasket, further, the gap D between the gasket and the central rod is eliminated, the driving piece is located at the second position, and the gap D between the gasket and the central rod can be obtained by measuring the axial gap S between the first position and the second position; the axial gap S can be set by measuring the distance between the driving piece and the outer end face of the positioning seat at two positions through the measuring piece, and then the distance is calculated, so that the measuring is convenient, and the calculating process is simple;

5. according to the cylinder body gasket debugging method, the thickness of the gasket is adjusted according to the gap D between the end face of the central rod and the gasket, which is measured by the measuring method, so that the D is controlled within a required range to ensure the stable work of the plunger machine; the structure and the shape of the cylinder body and the gasket are reasonably arranged, so that the gasket can penetrate into the central hole from the opening at the bottom of the central hole of the cylinder body without being taken out from the opening at the front side of the cylinder body, namely, the structures such as the central rod and the elastic piece are not required to be taken out during assembly, and the mounting mode is simple. In the debugging process of the cylinder body gasket, the clearance D between the end surface of the center rod of the assembled plunger machine and the gasket can be measured firstly; then judging whether the clearance D is in a required range; if the gasket is not in the required range, the gaskets with different thicknesses are replaced, and when the gasket is replaced, the original gasket is taken out from the hole bottom of the central hole of the cylinder body, and then a new gasket penetrates into the central hole from the hole bottom of the central hole of the cylinder body to be assembled; and finally, measuring the gap D between the end surface of the central rod of the plunger machine and the new gasket until the gap D is located at the required position.

Drawings

FIG. 1 is a schematic structural diagram of a measurement tool of the present invention;

FIG. 2 is a schematic structural view of a measurement tool from another view angle;

FIG. 3 is a front view of the measurement tool;

FIG. 4 is a rear view of the measurement tool;

FIG. 5 is a side view of the measurement tool;

FIG. 6 is a schematic structural diagram of the positioning seat;

FIG. 7 is a schematic view of the driving member;

FIG. 8 is a diagram of the working state of the measuring tool during measurement;

FIG. 9 is a cross-sectional view of the measuring tool during measurement;

FIG. 10 is an enlarged view of portion A of FIG. 9;

FIG. 11 is a state diagram of the driving member in the first position;

FIG. 12 is a state diagram of the driving member in the second position;

FIG. 13 is a schematic view of the cylinder;

FIG. 14 is a schematic structural view of the cylinder body at the bottom of the cylinder;

FIG. 15 is a schematic view of a gasket;

FIG. 16 is a schematic view showing the structure of the assembly of a cylinder block according to another embodiment;

FIG. 17 is a schematic structural view of a cylinder block according to another embodiment;

FIG. 18 is an enlarged partial view of FIG. 17;

FIG. 19 is a schematic view of a gasket according to another embodiment;

FIG. 20 is a schematic view of the construction of the block piece;

in the figure: 1-a positioning assembly; 11-a positioning seat; 111-locating holes; 112-measurement well; 113-long hole; 114-a pilot hole; 12-a drive member; 121-a first protrusion; 122-a second protrusion; 2-a pusher; 3-a spacer; 4-a fixing piece; 5-a guide; 6-a shell; 61-assembly plane; 7-port plate; 8-cylinder body; 81-central hole; 811-inner projection; 8111 — a first connection hole; 8112-installation gap; 82-plunger hole; 9-a gasket; 91-an annular portion; 92-outer bulge; 921-second connection hole; 10-an elastic member; 100-a center pole; 200-a piston; 300-a blocking piece; 3001-plugging the end face; 400-main axis.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

As shown in fig. 1 to 20, the present embodiment provides a measuring tool for measuring a gap D between an end surface of a center rod 100 of a plunger machine and a gasket 9, which includes a positioning assembly 1, a pushing member 2 and a measuring member, wherein the positioning assembly 1 includes a positioning seat 11 and a driving member 12, the positioning seat 11 is fixedly assembled on a housing 6, and the driving member 12 is movable relative to the positioning seat 11. During measurement, an end cover of the plunger machine is taken down, the positioning seat 11 is assembled on the shell 6, and the positioning seat 11 and the driving piece 12 can be matched with each other to limit the position of the cylinder body 8 of the plunger machine together to be the same as the position formed by abutting against the cylinder body 8 after the end cover is assembled; then, the pushing member 2 drives the driving member 12 to axially move relative to the positioning seat 11, the driving member 12 drives the cylinder body 8 to move towards the central rod 100 until the gasket 9 in the cylinder body 8 abuts against the end surface of the central rod 100, that is, the axial movement of the driving member 12 eliminates a gap D between the end surface of the central rod 100 and the gasket 9, and the measuring member only needs to measure and calculate the axial movement displacement of the driving member 12 to obtain the gap D between the end surface of the central rod 100 and the gasket 9.

The positioning assembly 1 comprises a positioning seat 11 and a driving part 12 which are in sliding fit, the driving part 12 and the positioning seat 11 are sequentially stacked on one side of the port plate 7, which is far away from the cylinder body 8, and the positioning seat 11 is fixedly assembled at the end part of the shell 6 so as to tightly press the driving part 12 on the port plate 7. In an initial state, the driving part 12 is located at a first position under the compression action of the positioning seat 11, at this time, the position of the cylinder body 8 is the same as the position formed by pressing the cylinder body 8 after the end cover is assembled, namely, the position of the cylinder body 8 relative to the shell 6 is under the condition of normal assembly of the plunger machine; when the pushing member 2 pushes the driving member 12 to slide away from the positioning seat 11 until the gasket 9 in the cylinder 8 abuts against the end surface of the center rod 100, the driving member 12 is located at the second position.

The positioning seat 11 is assembled on the outer shell 6 through the fixing piece 4 and the guide piece 5, and the positioning seat 11 is separated from the outer shell 6 by the spacing piece 3. Specifically, an assembly plane 61 is formed at an end of the housing 6, at least two fixing members 4 fix the positioning seat 11 on the assembly plane 61 of the housing 6, the spacing member 3 may be configured as a spacer structure and may be sleeved on the fixing members 4, and the fixing members 4 sequentially pass through the positioning seat 11 and the spacing member 3 and are fixed on the housing 6.

In this embodiment, mounting threaded holes are distributed on the mounting plane 61 of the housing 6, four branches extend outside the positioning seat 11, the four branches are distributed in a central symmetry manner, long holes 113 are formed at the outer ends of two opposite branches, and the fixing member 4 can penetrate through the long holes 113 and the spacing member 3 and is in threaded fit with the mounting threaded holes on the housing 6 to form connection. The spacer 3 rests at both ends against the driver 12 and the assembly plane 61, respectively. The fixing member 4 may be selected from, but not limited to, a long bolt. Preferably, the elongated hole 113 extends along the extension direction of the branch in which the fixing member 4 is located, and the fixing member 4 can slide in the elongated hole 113, so that the position of the fixing member 4 can be conveniently adjusted to adapt to the shells 6 with different sizes.

As a preferred technical solution of this embodiment, the other two opposite branches of the positioning seat 11 are formed with guide holes 114, the guide 5 is correspondingly assembled on the assembling plane 61 of the housing 6, and the guide 5 is in sliding fit with the guide holes 114, so that the distance between the positioning seat 11 and the assembling plane 61 of the housing 6 can be adjusted.

The positioning seat 11 is formed with a positioning hole 111 and a measuring hole 112, the pushing member 2 can pass through the positioning hole 111 to push the driving member 12 to slide relative to the positioning seat 11, and the measuring member can pass through the measuring hole 112 to abut against the driving member 12 for measurement. Specifically, the positioning hole 111 is located at the center of the positioning seat 11, the measuring hole 112 is offset from the positioning hole 111, and both the positioning hole 111 and the measuring hole 112 are through holes. The measuring member may be selected from, but not limited to, a micrometer.

The driving member 12 can move relative to the positioning seat 11, and the driving member 12 is in surface contact with the positioning seat 11, and the contact surface is perpendicular to the axis. In order to facilitate the coaxiality between the driving part 12 and the positioning seat 11, a first protrusion 121 is formed on the driving part 12, and the first protrusion 121 can extend into the positioning hole 111 to be in sliding fit, so as to perform limiting and guiding functions on the driving part 12. Specifically, the positioning hole 111 is set as a stepped hole, and in an initial state, the first protrusion 121 of the driving part 12 can extend into the positioning hole 111 and abut against the stepped surface, so that the driving part 12 is limited, and the driving part 12 and the positioning seat 11 are assembled in a coaxial sliding manner. The pushing member 2 can be in threaded fit with the positioning hole 111, and the pushing end of the pushing member 2 extends into the positioning hole 111 and abuts against the first protrusion 121. When the pushing piece 2 is rotated, the pushing piece 2 generates axial displacement, the driving piece 12 is pushed to move axially, and the driving piece 12 drives the valve plate 7 and the cylinder body 8 to move axially. The axial length of the positioning hole 111 can be reasonably controlled, so that the first protrusion 121 cannot be separated from the positioning hole 111 in the process of moving the driving member 12 from the first position to the second position.

As a preferable technical scheme of the embodiment, a second protrusion 122 is further formed on the end surface of the driving member 12 far away from the first protrusion 121, the first protrusion 121 and the second protrusion 122 both extend along the axis, and the second protrusion 122 can penetrate through the port plate 7 and extend into the bottom of the central hole of the cylinder 8, so that the coaxial movement of the driving member 12, the port plate 7 and the cylinder 8 is ensured.

The embodiment also provides a measuring method, which adopts the measuring tool for obtaining the gap D between the end surface of the central rod 100 of the plunger machine and the gasket 9. The measuring method comprises the following steps:

a1, removing an end cover of the plunger machine;

a2, a driving piece 12 and a positioning seat 11 are sequentially pressed on the outer side of the port plate 7;

a3, adjusting and fixing the position of the positioning seat 11 to make the driving member 12 located at the first position, and then fixedly assembling the positioning seat 11 on the housing 6;

a4, the driving piece 12 is pushed by the pushing piece 2 to move, the driving piece 12 pushes the port plate 7 and the cylinder 8 to move axially until the gasket 9 contacts the central rod 100, and the driving piece 12 is located at the second position;

a5, measuring and calculating the axial gap S between the first position and the second position, namely the gap D between the end surface of the central rod 100 and the gasket 9.

The plunger machine for the measuring method of the embodiment comprises a cylinder body 8, a center rod 100, a plunger 200, a main shaft 400 and a shell 6, wherein the cylinder body 8 is rotatably assembled in the shell 6, a center hole 81 is formed in the cylinder body 8, a plunger hole 82 is formed on the periphery of the center hole 81, the center rod 100 is slidably assembled in the center hole 81 of the cylinder body 8, and the plunger 200 is slidably assembled in the plunger hole 82 of the cylinder body 8. Specifically, one end of the center rod 100 extends into the center hole 81 from the hole opening of the center hole 81, and the other end of the center rod 100 is formed with a ball head; one end of the plunger 200 extends into the plunger hole 82 from the opening of the plunger hole 82, and the other end of the plunger 200 is formed with a ball head. The main shaft 400 is rotatably assembled on the shell 6, one end of the main shaft 400 extends out of the shell 6, the other end of the main shaft 400 is positioned in the shell 6 and extends to form an assembling surface, ball grooves are formed in the assembling surface corresponding to the ball head of the central rod 100 and the ball head of the plunger 200, and the ball head of the central rod 100 and the ball head of the plunger 200 are movably assembled in the ball grooves of the main shaft 400. The axis of the main shaft 400 forms an angle with the axis of the cylinder 8. The bottom of the cylinder body 8 is provided with a port plate 7, one end of the port plate 7 far away from the cylinder body 8 is provided with an end cover, and the end cover is hermetically assembled at the end part of the shell 6.

An elastic piece 10 is arranged between the central rod 100 and the gasket 9, and two ends of the elastic piece 10 respectively act on the central rod 100 and the gasket 9, so that the cylinder body 8 is pressed on the port plate 17 under the action of the elastic piece 10, and the port plate 7 is pressed on the end cover. The elastic member 10 may be selected from, but not limited to, a spring.

In step a3, the position of the positioning seat 11 is adjusted and fixed so that the driving member 12 is located at the first position, and the position of the port plate 7 relative to the housing 6 when the end cap is assembled needs to be known. Since the port plate 7 is pressed against the end cap, and the end cap is plane-fitted with the fitting plane 61 of the housing 6, the position of the port plate 7 after fitting the end cap can be determined by measuring the maximum height of the port plate 7 protruding from the fitting plane 61 of the housing 6. Due to the matching relationship between the end cover and the port plate 7, the end cover can be removed correspondingly to the end cover, and the maximum depth of the port plate 7 contacting the end cover is measured by taking the installation plane of the end cover matching with the assembly plane 61 of the shell 6 as a reference, namely the maximum height of the port plate 7 protruding out of the assembly plane 61 of the shell 6.

Further, adjusting and fixing the position of the positioning seat 11 to make the driving member 12 located at the first position includes firstly assembling the two guiding members 5 on the assembling plane 61 of the housing 6, and matching the two guiding holes 114 on the positioning seat 11 with the guiding members 5 to make the positioning seat 11 slide relative to the guiding members 5; then, selecting the spacing member 3, placing the spacing member 3 between the assembling plane 61 and the positioning seat 11, wherein two ends of the spacing member 3 respectively abut against the assembling plane 61 and the driving member 12, and the spacing member 3 corresponds to the screw hole on the assembling plane 61; finally, the fixing member 4 passes through the long hole 114 and the spacer 3 in sequence, and is screwed into the screw hole on the mounting plane 61, thereby fixing the positioning seat 11.

As a preferable mode of the present embodiment, the spacer 3 has a spacer structure, and the axial length of the spacer 3 is mainly selected. The axial length of the partition 3 is set to be equal to the sum of the maximum height of the port plate 7 projecting from the assembly plane 61 of the housing 6 and the thickness of the driver 12. With the spacer 3 of the above-mentioned size, the driver 12 can be located in the first position after the positioning socket 11 is installed.

In step a4, the pushing element 2 is in threaded engagement with the positioning hole 111, the pushing element 2 can be rotated, and the pushing element 2 can generate axial displacement to push the driving element 12 to move axially.

In step a5, measuring and calculating the axial gap S between the first position and the second position specifically includes: firstly, when the driving member 12 is located at the first position, the measuring member passes through the measuring hole 112 and abuts on the driving member 12, and the distance S1 from the driving member 12 to the end surface of the positioning seat 11 far away from the driving member 12 is measured; then, when the driving member 12 is located at the second position, the measuring member passes through the measuring hole 112 and abuts on the driving member 12, and the distance S2 from the driving member 12 to the end surface of the positioning seat 11 far away from the driving member 12 is measured; finally, S is obtained through calculation, namely S2-S1.

The embodiment also provides a cylinder gasket debugging method, which comprises the following steps:

b1, completing the assembly of the plunger machine;

b2, obtaining the clearance D between the end surface of the central rod 100 of the plunger machine and the gasket 9 by adopting the measuring method;

In step B3, if D is greater than the upper limit of the required range, the gasket 9 with a thickness greater than that of the original gasket needs to be replaced; when D is less than the lower limit of the required range, the gasket 9 with the thickness smaller than that of the original gasket needs to be replaced. The required range of D can be reasonably set according to the working condition.

In step B1 and step B3, the gasket 9 is assembled, and in the present embodiment, the structural shapes of the cylinder 8 and the gasket 9 are set accordingly, so that the gasket 9 can be conveniently assembled and disassembled in the cylinder 8. In this embodiment, a central hole 81 is formed in the cylinder 8, and at least two inner protrusions 811 extend radially inward from a bottom of the central hole 81, so that the bottom of the central hole 81 is in a non-circular shape; at least two outer protrusions 92 extend radially outwards from the outer periphery of the gasket 9, and when the gasket 9 is assembled, the gasket 9 can penetrate through the hole bottom of the central hole 81 and enter the central hole 81, and the gasket 9 is rotated after entering, so that the outer protrusions 92 of the gasket 9 can be at least partially overlapped with the inner protrusions 811 of the cylinder body 8, the gasket 9 can be conveniently fixed or limited, and the gasket 9 is prevented from being pulled out from the hole bottom of the central hole 81 of the cylinder body 8.

As a preferred embodiment of the present invention, at least two inner protrusions 811 of the central hole 81 may have the same or different shapes, and the at least two inner protrusions 811 are discretely distributed. In this embodiment, 3 inner protrusions 811 are provided, 3 inner protrusions 811 have the same shape and are uniformly and alternately distributed along the circumferential direction, and the inner ends of the 3 inner protrusions 811 are located on the same circumferential surface.

As a preferred embodiment of the present invention, the gasket 9 includes an inner ring portion 91 and at least two outer protrusions 92, and the shape of the at least two outer protrusions 92 may be the same or different. The size of the gasket 9 is not larger than the hole bottom opening of the central hole 81, that is, the shape of the gasket 9 can be completely embedded with the hole bottom shape of the central hole 81, or smaller than the hole bottom of the central hole 81, so that the gasket 9 can pass through the hole bottom, and after the gasket 9 is rotated, the inner protrusion 811 and the outer protrusion 92 are overlapped. Corresponding to the 3 inner protrusions 811 in the present embodiment, the outer protrusions 92 may be provided in 3 numbers corresponding to the inner protrusions 811; when the spacer 9 passes through the bottom of the center hole 81, the outer peripheral surface of the inner ring portion 91 is in clearance fit with the inner end surface of the inner protrusion 811, and the outer protrusion 92 extends between two adjacent inner protrusions 811 and is in clearance fit with two adjacent inner protrusions 811.

As a preferred solution of this embodiment, after the gasket 9 enters the central hole 81, the gasket 9 can be fixed in the cylinder 8 by the fixed connection between the inner protrusion 811 and the outer protrusion 92. Specifically, the inner protrusion 811 has a first coupling hole 8111 formed thereon, the outer protrusion 92 has a second coupling hole 921 formed thereon, and when fixing, the gasket 9 may be rotated such that the inner protrusion 811 overlaps the outer protrusion 92, the first coupling hole 8111 is aligned with the second coupling hole 921, and the fastening member passes through the first coupling hole 8111 and the second coupling hole 921 to fix the gasket 9 to the cylinder block 8.

As an alternative to the above-mentioned fixation of the gasket 9 to the cylinder 8, a blocking element 400 may be provided to limit the gasket 9 in the central hole 81. Specifically, two adjacent inner protrusions 811 oppositely form mounting notches 8112, and one end of the plugging member 300 is embedded into the two opposite mounting notches 8112 and fixedly connected with the two inner protrusions 811; the other end face of the plugging member 300 is a plugging end face 3001, and the plugging end face 3001 and the inner end face of the inner protrusion 811 can be located on the same plane to plug the hole bottom opening of part of the central hole 81, so that the gasket 9 cannot be pulled out from the hole bottom of the central hole 81.

Based on the above-mentioned matching structure of the cylinder 8 and the gasket 9, the assembling of the gasket 9 to the cylinder 8 includes the following steps:

c1, the gasket 9 penetrates into the central hole 81 from the bottom of the central hole 81 of the cylinder body 8;

c2, rotating the gasket 9 to ensure that the gasket 9 is overlapped with at least two positions of the hole bottom of the central hole 81 of the cylinder 8; that is, at least two inner protrusions 811 and at least two outer protrusions 92 are correspondingly overlapped;

c3, fixing the overlapped part; alternatively, the blocking member 300 may be used to block at least a portion of the bottom of the central hole 81 to prevent the gasket 9 from coming out of the bottom of the central hole 81.

If the gasket 9 needs to be taken out of the cylinder 8, the operation is reversed. Based on the structure and the method, when the gasket 9 is assembled or replaced, the gasket 9 can be taken out or put in from the cylinder bottom of the cylinder body 8 only by disassembling the end cover and the swash plate 7 without operating from the cylinder opening of the cylinder body 8, and further without taking out the structures of the central rod 100, the elastic piece 10 and the like, thereby greatly simplifying the disassembly, assembly and replacement work.

Based on the above, the gap D between the gasket 9 and the end surface of the central rod 100 of the present embodiment can be accurately controlled, and the mode of detecting, replacing the gasket, and then detecting can be adopted, so that the gasket 9 with a proper size is selected to be assembled into the plunger machine, and the stable operation of the plunger machine is ensured.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. The utility model provides a measure frock for measure clearance D between well core rod (100) terminal surface of plunger machine and gasket (9), its characterized in that includes:

the positioning assembly (1) comprises a driving part (12) for driving the cylinder body (8) and a positioning seat (11) for limiting the driving part (12), the positioning seat (11) is assembled on the shell (6), the positioning seat (11) tightly presses the driving part (12) to enable the driving part (12) to be located at a first position, and when the driving part (12) is located at the first position, the position of the cylinder body (8) is the same as the position formed by pressing the cylinder body (8) after the end cover is assembled;

the pushing piece (2) penetrates through the positioning seat (11) to push the driving piece (12), the driving piece (12) pushes the cylinder body (8) to move towards the center rod (100), a gasket (9) in the cylinder body (8) is in contact with the center rod (100), and the driving piece (12) is located at a second position;

and the measuring part is used for measuring and calculating the axial distance S between the first position and the second position of the driving part (12), namely the gap D between the end surface of the central rod (100) and the gasket (9).

2. A measuring tool according to claim 1, characterized in that the positioning socket (11) is mounted on the housing (6) at intervals, and the positioning socket (11) is separated from the housing (6) by a spacer (3).

3. A measuring tool according to claim 2, characterized in that the positioning seat (11) is assembled on the housing (6) by at least two fixing members (4), the spacing member (3) is sleeved on at least two fixing members (4), and two ends of the spacing member (3) respectively abut against the housing (6) and the positioning seat (11).

4. A measuring tool according to any one of claims 1 to 3, wherein a positioning hole (111) is formed in the positioning seat (11), a first protrusion (121) extends from an end surface of the driving member (12) close to the positioning seat (11), the first protrusion (121) extends into the positioning hole (111), and the pushing member (2) abuts against the first protrusion (121) to push the driving member (12).

5. A measuring tool according to claim 4, characterized in that the positioning hole (111) is located in the middle of the positioning seat (11), the first protrusion (121) is located in the middle of the driving part (12), and the pushing part (2) is in threaded fit with the positioning hole (111).

6. A measuring tool according to any one of claims 1-3 and 5, characterized in that the positioning seat (11) is further formed with a measuring hole (112), the measuring end of the measuring part is abutted against the driving part (12) through the measuring hole (112) for measuring, and the driving part (12) is in surface contact with the positioning seat (11).

7. The measuring tool according to claim 1, characterized in that the driving member (12) is pressed against a port plate (7) of the plunger machine, a second protrusion (122) extends from an end surface of the driving member (12) close to the port plate (7), and the second protrusion (122) can penetrate through the port plate (7) and extend into a cylinder bottom of the cylinder body (8) to drive the port plate (7) and the cylinder body (8) to move coaxially.

8. A measuring method for obtaining a clearance D between an end surface of a center rod (100) of a plunger machine and a gasket (9), characterized in that the measuring tool of any one of claims 1 to 7 is used, and comprises the following steps:

a1, removing an end cover of the plunger machine;

a2, a driving piece (12) and a positioning seat (11) are sequentially pressed on the outer side of the port plate (7);

a3, adjusting and fixing the position of the positioning seat (11) to enable the driving piece (12) to be located at the first position, and then fixedly assembling the positioning seat (11) on the shell (6);

a4, the driving piece (12) is pushed by the pushing piece (2) to move, the driving piece (12) pushes the port plate (7) and the cylinder body (8) to move axially until the gasket (9) is contacted with the central rod (100), and the driving piece (12) is located at the second position;

a5, measuring and calculating the axial gap S between the first position and the second position, namely the gap D between the end surface of the central rod (100) and the gasket (9).

9. A measuring method according to claim 8, wherein the step a5 of measuring and calculating the axial gap S between the first position and the second position comprises: a measuring hole (112) is formed in the positioning seat (11), when the driving part (12) is located at the first position, the measuring part penetrates through the measuring hole (112) and abuts against the driving part (12), and the distance S1 from the driving part (12) to the end face, far away from the driving part (12), of the positioning seat (11) is measured; when the driving piece (12) is located at the second position, the measuring piece passes through the measuring hole (112) and abuts against the driving piece (12), and the distance S2 from the driving piece (12) to the end face, far away from the driving piece (12), of the positioning seat (11) is measured, wherein S is S2-S1.

10. A cylinder body gasket debugging method is characterized by comprising the following steps:

b1, completing the assembly of the plunger machine;

b2, obtaining the clearance D between the end surface of the central rod (100) of the plunger machine and the gasket (9) by using the measuring method of any one of claims 8 to 9;

b3, judging whether D is in the required range, if so, not replacing the gasket (9); if the thickness is not within the range, the gasket (9) with different thickness needs to be replaced.

11. The cylinder gasket debugging method according to claim 10, wherein in step B3, if D is greater than the upper limit of the required range, the gasket (9) with a thickness greater than that of the original gasket needs to be replaced; when D is less than the lower limit value of the required range, the gasket (9) with the thickness smaller than that of the original gasket needs to be replaced.

12. A cylinder block gasket commissioning method according to any one of claims 10-11, wherein fitting of the gasket (9) into the cylinder block (8) comprises:

c1, the gasket (9) penetrates into the central hole (81) from the bottom of the central hole (81) of the cylinder body (8);

c2, rotating the gasket (9) to enable the gasket (9) to be overlapped with at least two positions of the hole bottom of the central hole (81) of the cylinder body (8);

c3, fixing the overlapped part; or, a blocking piece (300) is used for blocking at least part of the hole bottom of the central hole (81) so as to prevent the gasket (9) from falling out of the hole bottom of the central hole (81).

13. A cylinder gasket commissioning method according to claim 12 wherein the outer periphery of said gasket (9) extends radially outwardly with at least two outer protrusions (92), the bore bottom of the central bore (81) of said cylinder (8) extends radially with at least two inner protrusions (811), and said gasket (9) is not larger than the bore bottom opening size of the central bore (81) of said cylinder (8).