CN218888347U - Auxiliary assembly device of plunger pump/motor - Google Patents

Abstract

The application relates to the technical field of plunger pumps/motors and discloses an auxiliary assembling device of a plunger pump/motor, which comprises a support, a core block and a first fastener. The bracket comprises a main body part and a positioning part which are connected, wherein the main body part comprises a first end surface and a second end surface which are positioned at the upper end and the lower end, the first end surface is provided with an inwards concave arc surface which is formed by inwards concave towards the second end surface, the second end surface is provided with an outwards convex arc surface which is formed by outwards convex away from the first end surface, and the positioning part is provided with a first positioning hole which penetrates through the upper end and the lower end and a second positioning hole which is opened to the first positioning hole along the side edge; the core block can be embedded in the first positioning hole; the first fastener is adapted to the second positioning hole and can extend into the first positioning hole along the second positioning hole so as to abut against the core block. The application discloses supplementary assembly quality can be used for detecting the clearance between cylinder body and the valve plate to adjustment oil film thickness guarantees the vice lubrication of friction.

Description

Auxiliary assembling device for plunger pump/motor

Technical Field

The utility model belongs to the technical field of plunger pump/motor, especially, relate to a supplementary assembly quality of plunger pump/motor.

Background

Plunger pump/motors are one of the most widely used hydraulic components in modern hydraulic drives. Since it can easily realize variable, making the hydraulic system easily realize power regulation and stepless speed change, it is widely used in various hydraulic systems. Certain gaps are required to be ensured between a cylinder body of the plunger pump/motor and the valve plate and between the middle plunger and the driving shaft so as to form oil films during working. The condition of a gap oil film of the flow distribution pair directly determines the lubrication state of the flow distribution pair so as to ensure that the friction pair is not excessively worn, thereby ensuring the service performance of the plunger pump/motor.

In one mode of the prior art, when the plunger pump/motor adjusts the gap of the cylinder body, a tool of an assembly production line is needed, and the gap measurement is completed by arranging a sensor and cooperating with a plurality of tools and a computer for common operation. The tool is suitable for being assembled and used at fixed positions in batches. However, the sensor arrangement and installation are difficult, require a large number of tools, and are not suitable for use in laboratory assembly or outdoor assembly of the plunger pump/motor. In another mode of the prior art, the depth of the surface of the rocking chair with the rear end cover and the height of the port plate are measured through a depth gauge, and the height difference is obtained through processing and calculation to determine the height difference, so that the measurement accuracy is difficult to guarantee.

Thus, the prior art is subject to further improvements and enhancements.

SUMMERY OF THE UTILITY MODEL

The utility model provides an auxiliary assembly device of plunger pump/motor to solve above-mentioned technical problem's at least one technical problem.

The utility model discloses the technical scheme who adopts does:

the utility model provides an auxiliary assembly device of plunger pump/motor, including support, pellet and first fastener. The support comprises a main body part and a positioning part which are connected, the main body part comprises a first end surface and a second end surface which are positioned at the upper end and the lower end, the first end surface is provided with an inwards concave arc surface which is formed by inwards concave towards the second end surface, the second end surface is provided with an outwards convex arc surface which is formed by outwards convex away from the first end surface, and the positioning part is provided with a first positioning hole which penetrates through the upper end and the lower end and a second positioning hole which is opened to the first positioning hole along the side edge; the core block can be sleeved in the first positioning hole; the first fastener is adapted to the second positioning hole and can extend into the first positioning hole along the second positioning hole so as to abut against the core block.

As a preferred embodiment of the utility model, first terminal surface still has the horizontal segment, the indent cambered surface including connect in the first segmental arc of horizontal segment one end with connect in the second segmental arc of the horizontal segment other end, first segmental arc with the second segmental arc respectively with the horizontal segment is tangent.

As a preferred embodiment of the present invention, the auxiliary assembling device further includes a second fastener, the core block is provided with a connecting hole, and the second fastener is adapted to the connecting hole.

As a preferred embodiment of the present invention, the auxiliary assembling device further includes an inserting column disposed on the main body portion, the inserting column protrudes from the first end surface.

As a preferred embodiment of the utility model, the grafting post with the connection can be dismantled to the main part, the main part still is equipped with the mounting hole, the grafting post is including inlaying the locating the embedded portion of mounting hole and protrusion in the engaging portion of mounting hole.

As a preferred embodiment of the present invention, the engaging portion is provided with a vertical arc-shaped guide surface.

As a preferred embodiment of the utility model, the thickness of pellet is H1, the thickness of location portion is H2, and 3mm is less than or equal to H1-H2 is less than or equal to 10mm.

As a preferred embodiment of the present invention, the positioning portion is further provided with a positioning pin hole penetrating through the upper and lower ends.

As a preferred embodiment of the present invention, the positioning portions are provided with two positioning portions, and are symmetrically arranged with respect to the center of the main body portion.

As a preferred embodiment of the present invention, the main body portion and the connecting portion are further provided therebetween, and the connecting portion and the main body portion have an arc-shaped transition surface therebetween.

Since the technical scheme is used, the utility model discloses the beneficial effect who gains does:

1. the utility model provides a pair of plunger pump/motor auxiliary assembly device can be used for detecting the clearance between rear end cap rocking chair face and the valve plate, is worth the clearance between cylinder body fitting surface and the valve plate according to seeking the difference to through selecting suitable gasket thickness, adjustment oil film thickness guarantees the vice lubrication of friction. Specifically, the main body part of the bracket is provided with a first end surface with a concave cambered surface, and the first end surface can be matched with the valve plate; and a second end surface with a convex cambered surface is also arranged and can be matched with the rocking chair surface of the rear end cover. The auxiliary assembly device further comprises a core block, and the contact surface of the core block is in contact with the mounting surface of the rear end cover, so that the problem that the second end surface is not in-place contact with the rocking chair surface of the rear end cover due to the fact that the positioning portion of the support is in assembly error with the mounting surface of the rear end cover is avoided, and the problem of low detection precision is avoided. On the premise that the second end face is in full contact with the rear end cover rocking chair face, the gap between the first end face and the valve plate is obtained, and the gap between the rear end cover rocking chair face and the valve plate can be obtained. This scheme can accomplish detection and adjustment to the cylinder body clearance before rear end cap and cylinder body assembly, need not relapse dismouting rear end cap, and easy operation is applicable to multiple operational environment.

2. The utility model provides a pair of plunger pump/motor auxiliary assembly device, first terminal surface are provided with the horizontal segment, can enough guarantee first terminal surface and valve plate contact that can target in place, also convenient simultaneously and valve plate contact back measurement clearance.

3. The utility model provides a pair of plunger pump/motor auxiliary assembly device, auxiliary assembly device still include the second fastener, are fixed in the screw hole of rear end housing installation face or casing installation face with the pellet through the second fastener, can enough play the prepositioning effect before the support mounting, also can guarantee the stability of pellet when measuring, improve and detect the precision. The auxiliary assembly device further comprises a plug-in column arranged on the main body part, the plug-in column is matched with the central hole of the valve plate, the valve plate is connected with the cylinder body, and the valve plate is prevented from shaking in the detection process to influence the detection precision. Meanwhile, the alignment of the support and the valve plate is realized by utilizing the splicing columns, and the mounting and detection speed is favorably improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the application and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of an auxiliary assembling device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a bracket according to an embodiment of the present invention;

fig. 3 is a side view of a bracket according to an embodiment of the present invention;

fig. 4 is a first operating state diagram of an auxiliary assembling apparatus according to an embodiment of the present invention;

fig. 5 is a second operating state diagram of the auxiliary assembling device provided by the embodiment of the present invention.

Wherein the content of the first and second substances,

1-a support; 11-a body portion; 111-a first end face; 1111-horizontal segment; 1112-a first arc segment; 1113-second arc segment; 112-a second end face; 113-mounting holes; 12-a positioning section; 121-a first positioning hole; 122-a second positioning hole; 123-positioning pin holes; 13-a connecting part;

2-core block; 21-a first contact surface; 22-a second contact surface; 23-a connection hole;

3-a first fastener;

4-a second fastener;

5-inserting the column; 51-an inset; 52-a joint; 521-an arc-shaped guide surface;

6-rear end cap; 7-port plate; 8-shell.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The utility model provides an auxiliary assembly device of plunger pump/motor, as shown in fig. 1-3, in an embodiment, auxiliary assembly device includes support 1, pellet 2 and first fastener 3. The bracket 1 comprises a main body part 11 and a positioning part 12 which are connected, the main body part 11 comprises a first end surface 111 and a second end surface 112 which are positioned at the upper end and the lower end, the first end surface 111 is provided with an inwards concave cambered surface which is inwards concave towards the second end surface 112, and the inwards concave cambered surface is a cambered surface matched with the valve plate 7. The second end surface 112 is provided with an outward convex cambered surface which is formed by outward convex deviating from the first end surface 111. The convex cambered surface is a cambered surface matched with the rocking chair surface of the rear end cover 6, and the diameter of the convex cambered surface is smaller than that of the rocking chair surface of the rear end cover 6. The positioning portion 12 is provided with a first positioning hole 121 penetrating through the upper and lower ends and a second positioning hole 122 opening to the first positioning hole 121 along the side edge. The core block 2 can be sleeved in the first positioning hole 121. The first fastener 3 is adapted to the second positioning hole 122 and can extend along the second positioning hole 122 into the first positioning hole 121 to abut the core block 2. The first fastener 3 can be a screw that passes through the second positioning hole 122 and abuts against the core block 2, thus fixing the core block 2 to the positioning portion 12.

In one embodiment, the first end surface 111 further has a horizontal section 1111, the concave arc surface includes a first arc-shaped section 1112 connected to one end of the horizontal section 1111 and a second arc-shaped section 1113 connected to the other end of the horizontal section 1111, and the first arc-shaped section 1112 and the second arc-shaped section 1113 are respectively tangent to the horizontal section 1111, so as to ensure that the first end surface 111 and the port plate 7 can be in contact with each other in place, and simultaneously facilitate measuring the gap after contacting the port plate 7.

In one embodiment, the auxiliary fitting means also comprise a second fastening member 4, the core block 2 being provided with coupling holes 23, the second fastening member 4 being adapted to the coupling holes 23. The connecting holes 23 are threaded holes matched with the threaded mounting holes 113 on the mounting surface of the rear end cover 6 or the mounting surface of the shell 8, the second fastening pieces 4 can be bolts, the core block 2 is fixed in the threaded mounting holes 113 on the mounting surface of the rear end cover 6 or the mounting surface of the shell 8 through the second fastening pieces 4, the pre-positioning effect before the support 1 is mounted can be achieved, the stability of the core block 2 can be guaranteed during measurement, and the detection precision is improved.

In one embodiment, the auxiliary assembly device further includes a plug-in post 5 disposed on the main body 11, and the plug-in post 5 protrudes from the first end surface 111. Supplementary assembly quality still including locating main part 11 plug-in post 5, through plug-in post 5 and valve plate 7 centre bore cooperation and insert in the cylinder body centre bore, realize being connected of valve plate 7 and cylinder body, avoid among the testing process valve plate 7 to rock, influence detection accuracy. Meanwhile, the support 1 and the valve plate 7 are aligned by the aid of the plug-in columns 5, and rapid installation and detection are facilitated.

Further, the plug-in post 5 is detachably connected with the main body 11, the main body 11 is further provided with a mounting hole 113, and the plug-in post 5 comprises an embedded portion 51 capable of being embedded in the mounting hole 113 and an engagement portion 52 protruding out of the mounting hole 113. Firstly, the inserting column 5 is inserted into the central hole of the valve plate 7, and then the bracket 1 is installed along the inserting column 5.

Further, the engaging portion 52 is provided with a vertical arc-shaped guide surface 521. The embedded portion 51 has a cylindrical shape and can be inserted into the mounting hole 113. The engagement portion 52 is of a flat head shape having an arcuate guide surface 521 and is easily inserted into the central hole of the port plate 7.

In one embodiment, the core block 2 has a thickness H1 and the positioning portion 12 has a thickness H2,3mm ≦ H1-H2 ≦ 10mm. The thickness of the core 2 is greater than that of the positioning portion 12. The difference in thickness between the core 2 and the positioning portion 12 cannot be too small to avoid direct contact between the positioning portion 12 and the mounting surface of the housing 8 or the rear end cap 6. Of course, the thickness difference between the core block 2 and the positioning portion 12 does not need to be too large, and the upper end of the core block 2 can not be exposed out of the first positioning hole when the second end surface 113 is fully contacted with the rocking chair surface of the rear end cover 6 as much as possible.

In one embodiment, the positioning portion 12 is further provided with a positioning pin hole 123 penetrating through the upper end and the lower end, so that the positioning portion 12 is inserted into the positioning pin on the mounting surface of the rear end cover 6 to realize the positioning of the bracket 1.

In one embodiment, two positioning portions 12 are provided and are symmetrically arranged with respect to the center of the main body portion 11, as shown in the figure, the rear end cover 6 is provided with a strip-shaped rocking chair surface, mounting threaded holes are respectively provided on mounting surfaces on both sides of the rocking chair surface, correspondingly, the main body portion 11 is a strip-shaped plate, a mounting hole 113 for mounting the jack post 5 is provided at the center of the strip-shaped plate, and the positioning portions 12 are respectively connected to both ends of the main body portion 11.

In one embodiment, a connecting portion 13 is further disposed between the main body portion 11 and the positioning portion 12, and an arc-shaped transition surface is disposed between the connecting portion 13 and the main body portion 11.

The utility model discloses a plunger pump/motor auxiliary assembly device's using-way as follows:

referring to figure 4, in use, in a first step, the auxiliary assembly tool and rear end cap 6 installation measurements are taken. First, two core blocks 2 are installed above the installation screw holes of the rear end cover 6 and loosely installed with bolts. Then, the second end surface 112 of the bracket 1 is installed downwards, the first positioning hole 121 on the positioning part 12 is sleeved on the core block 2, and the positioning pin hole 123 on the positioning part 12 is sleeved on the pin of the rear end cover 6. The support 1 is continuously pressed downwards until the second end surface 112 is fully contacted with the rocking chair surface of the rear end cover 6, and the core block 2 is fixed on the mounting surface of the rear end surface by using the first fastener 3. Finally, the positioning portion 12 of the bracket 1 is fixed to the core block 2 by the second fastener 4.

Referring to fig. 5, in a second step, the bracket 1 is removed from the rear end cover 6 and then turned to the housing 8 and the port plate 7. Firstly, the insertion column 5 is matched with the central hole of the port plate 7, then, the second positioning hole 122 of the positioning part 12 and the pin hole on the shell 8 are used for assembling through a pin, then, the core block 2 is assembled on the installation surface of the shell 8 through the first fastening piece 3, and finally, the clearance between the first end surface 111 and the port plate 7 is measured through a feeler gauge.

Thirdly, calculating the clearance between the cylinder body and the port plate 7 according to the size of the clearance between the first end surface 111 and the port plate 7, and selecting a proper cylinder body spring gasket.

It should be noted that if, in the first step, the end face of the core block 2 facing away from the mounting face of the rear end cap 6 is exposed to the first positioning hole 121, the amount of clearance between the first end face 111 and the port plate 7 should be reduced by the exposed height on the basis of the amount measured by the feeler gauge.

The utility model provides a pair of plunger pump/motor auxiliary assembly device can be used for detecting the clearance between 6 rocking chair faces of rear end cap and the valve plate 7 to obtain the clearance between cylinder body and the valve plate 7 according to the difference, thereby select suitable gasket thickness, adjustment oil film thickness guarantees the vice lubrication of friction. Specifically, the main body 11 of the bracket 1 is provided with a first end surface 111 with a concave cambered surface, which can be matched with the port plate 7; and a second end surface 112 with a convex cambered surface, which can be matched with the rocking chair surface of the rear end cover 6. The auxiliary assembly device further comprises a core block 2, and the contact surface of the core block 2 is in contact with the mounting surface of the rear end cover 6, so that the problem that the second end surface 112 and the rocking chair surface of the rear end cover 6 cannot be in-place contact due to assembly errors of the positioning part 1 of the support and the mounting surface of the rear end cover 6 is avoided, and the problem of low detection precision is avoided. On the premise that the second end face 112 is in sufficient contact with the rocker face of the rear end cover 6, the clearance between the rocker face of the rear end cover 6 and the port plate 7 can be obtained by obtaining the clearance between the first end face 111 and the port plate 7. Therefore, the detection and adjustment of the gap of the cylinder body can be completed before the rear end cover 6 and the cylinder body are assembled, the rear end cover 6 does not need to be repeatedly disassembled and assembled, the operation is simple, and the device is suitable for various working environments.

The utility model can be realized by adopting or using the prior art for reference in places which are not mentioned in the utility model.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. An auxiliary assembling device of a plunger pump/motor, comprising:

the support comprises a main body part and a positioning part which are connected, the main body part comprises a first end surface and a second end surface which are positioned at the upper end and the lower end, the first end surface is provided with an inwards concave cambered surface which is formed by inwards concave towards the second end surface, the second end surface is provided with an outwards convex cambered surface which is formed by outwards convex away from the second end surface, and the positioning part is provided with a first positioning hole which penetrates through the upper end and the lower end and a second positioning hole which is communicated with the first positioning hole along the side edge;

the core block can be sleeved in the first positioning hole;

the first fastener is adapted to the second positioning hole and can extend into the first positioning hole along the second positioning hole so as to abut against the core block.

2. The auxiliary fitting device of a plunger pump/motor according to claim 1,

the first end face is provided with a horizontal section, the concave arc face comprises a first arc section connected with one end of the horizontal section and a second arc section connected with the other end of the horizontal section, and the first arc section and the second arc section are tangent to the horizontal section respectively.

3. The auxiliary fitting device of a plunger pump/motor according to claim 2,

the auxiliary assembly device also comprises a second fastener, the core block is provided with a connecting hole, and the second fastener is matched with the connecting hole.

4. The auxiliary assembling apparatus of plunger pump/motor in accordance with claim 2,

the auxiliary assembling device further comprises an inserting column arranged on the main body part, and the inserting column protrudes out of the first end face.

5. The auxiliary assembling apparatus of plunger pump/motor in accordance with claim 4,

the inserting column is detachably connected with the main body part, the main body part is further provided with a mounting hole, and the inserting column comprises an embedded part which can be embedded in the mounting hole and a joint part which protrudes out of the mounting hole.

6. A sub-assembling apparatus of a plunger pump/motor in accordance with claim 5,

the joint is provided with a vertical arc-shaped guide surface.

7. The auxiliary fitting device of a plunger pump/motor according to claim 1,

the thickness of the core block is H1, the thickness of the positioning part is H2, and H1-H2 are more than or equal to 3mm and less than or equal to 10mm.

8. The auxiliary assembling apparatus of plunger pump/motor in accordance with claim 1,

the location portion still is equipped with the location pinhole that runs through upper and lower both ends.

9. The auxiliary fitting device of a plunger pump/motor according to claim 1,

the positioning parts are arranged in two numbers and are arranged in central symmetry relative to the main body part.

10. The auxiliary fitting device of a plunger pump/motor according to claim 9,

the main part with still be equipped with connecting portion between the location portion, connecting portion with the arc transition surface has between the main part.

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