Plane grinding tool for plunger piston shoe assembly

Abstract

The utility model discloses a plane grinding tool for a plunger piston shoe assembly, the plunger piston shoe assembly comprises a plunger body and a piston shoe body, one end of the piston shoe body far away from the plunger body is provided with a to-be-ground surface, the plane grinding tool comprises a grinding table, a grinding wheel, a grinding wheel, a grinding wheel and a grinding wheel, the pressure plate is provided with a plurality of mounting parts, and the mounting parts are used for mounting the plunger bodies; when the plunger body is installed on the installation part, at least part of the sliding shoe body is exposed out of the pressing disc, and the sliding shoe body can rotate relative to the plunger body under the gravity effect of the pressing disc till the face to be ground is attached to the grinding plane. According to the utility model, by utilizing the gravity of the pressure plate, the sliding shoe body can rotate until the to-be-ground surface is completely attached to the grinding plane on the grinding table, so that the planeness and roughness of the to-be-ground surface are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding technology, in particular to a surface grinding tool for a plunger sliding shoe assembly. Background Art

[0002] Grinding technology is a processing method that uses abrasives or grinding tools to remove excess material on the workpiece to achieve the designed accuracy or designed size.

[0003] The plunger and the slipper assembly are important parts of the plunger pump. They are composed of the plunger and the slipper. The flatness and roughness of the end surface of the slipper will seriously affect the service life and efficiency of the plunger pump. Therefore, the end surface of the slipper needs to be ground before assembling the plunger pump.

[0004] However, the existing end faces of the sliding shoes are all ground manually. Since a spherical pair is formed between the plunger and the sliding shoe, the sliding shoe is easy to rotate during the grinding process, and it is impossible to ensure that the end face of the sliding shoe is always in contact with the grinding plane, which seriously affects the flatness and roughness of the end face grinding. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to propose a surface grinding tool for a plunger shoe assembly, which is used to solve the problems in the prior art of low flatness and roughness due to the easy rotation of the shoe during the grinding process.

[0006] The utility model solves the technical problem by adopting a technical solution which is a surface grinding tool for a plunger and a sliding shoe assembly, wherein the plunger and the sliding shoe assembly comprises a plunger body and a sliding shoe body, a spherical pair is formed between the sliding shoe body and the plunger body, and an end of the sliding shoe body away from the plunger body has a surface to be ground;

[0007] The surface grinding tool comprises:

[0008] A grinding table having a grinding plane for contacting with the surface to be ground and grinding the sliding shoe body;

[0009] A pressure plate is provided with a plurality of mounting portions, wherein the mounting portions are used to mount the plunger body; when the plunger body is mounted on the mounting portions, the slipper body is at least partially exposed to the outside of the pressure plate, and the slipper body can rotate relative to the plunger body under the action of the gravity of the pressure plate until the surface to be ground is in contact with the grinding plane.

[0010] Furthermore, the pressure plate has a first end face and a second end face which are opposite to each other, and a plurality of mounting holes penetrating the first end face and the second end face are opened on the pressure plate, and the plunger body can be extended into the mounting hole so that the outer wall of the plunger body fits with the inner wall of the mounting hole.

[0011] Furthermore, an O-ring for fixing the plunger body is provided in the mounting hole.

[0012] Furthermore, the inner wall of the mounting hole is recessed outward to form an annular groove for accommodating an O-ring.

[0013] Furthermore, at least two O-rings are disposed in the mounting hole, and a plurality of O-rings are arranged along a height direction of the mounting hole.

[0014] Furthermore, the pressure plate is arranged in a cylindrical shape, and the plurality of mounting holes are evenly distributed along the circumference of the pressure plate.

[0015] Furthermore, the pressure plate is made of steel.

[0016] Compared with the prior art, the utility model has at least the following beneficial effects:

[0017] A pressure plate is provided, and a plurality of mounting parts are provided on the pressure plate. The plunger body is fixed on the mounting parts, and the sliding shoe body is partially or completely exposed outside the pressure plate, so that the sliding shoe body can rotate a certain angle relative to the plunger body; then the entire pressure plate is placed on the grinding table, and under the action of the gravity of the pressure plate, the sliding shoe body will rotate a certain angle relative to the plunger body until the surface to be ground and the grinding plane are completely fitted; finally, the grinding plane can grind the surface to be ground through the relative movement between the pressure plate and the grinding table. In other words, the gravity of the pressure plate is used to enable the sliding shoe body to rotate until the surface to be ground and the grinding plane on the grinding table are completely fitted, thereby improving the flatness and roughness of the surface to be ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the pressure plate and plunger shoe assembly in the embodiment;

[0019] Figure 2 It is a structural schematic diagram of the pressure plate in the embodiment;

[0020] Figure 3 Schematic diagram of the structure of the plunger shoe assembly in the embodiment;

[0021] In the figure:

[0022] 100, pressure plate; 110, mounting hole; 120, ring groove;

[0023] 200, plunger and shoe assembly; 210, plunger body; 220, shoe body; 221, surface to be ground. DETAILED DESCRIPTION

[0024] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0025] Please refer to Figure 1-Figure 3 The utility model discloses a surface grinding tool for a plunger and a sliding shoe assembly. The plunger and a sliding shoe assembly 200 includes a plunger body 210 and a sliding shoe body 220. A spherical pair is formed between the sliding shoe body 220 and the plunger body 210. The sliding shoe body 220 has a surface 221 to be ground at one end away from the plunger body 210. The surface grinding tool includes:

[0026] A grinding table having a grinding plane for contacting the surface to be ground 221 and grinding the sliding shoe body 220;

[0027] A pressure plate 100 is provided with a plurality of mounting portions, wherein the mounting portions are used to mount the plunger body 210; when the plunger body 210 is mounted on the mounting portions, the slipper body 220 is at least partially exposed to the outside of the pressure plate 100, and the slipper body 220 can rotate relative to the plunger body 210 under the action of gravity of the pressure plate 100 until the surface to be ground 221 is in contact with the grinding plane.

[0028] Specifically, the present application sets up a pressure plate 100, opens a plurality of mounting parts on the pressure plate 100, fixes the plunger body 210 on the mounting parts, and makes the slipper body 220 partially or completely exposed outside the pressure plate 100, so that the slipper body 220 can rotate a certain angle relative to the plunger body 210; then the entire pressure plate 100 is placed on the grinding table, and under the action of the gravity of the pressure plate 100, the slipper body 220 will rotate a certain angle relative to the plunger body 210 until the grinding surface 221 is completely fitted with the grinding plane; finally, through the relative movement between the pressure plate 100 and the grinding table, the grinding plane can grind the grinding plane.

[0029] That is to say, the present application utilizes the gravity of the pressure plate 100 to enable the sliding shoe body 220 to rotate until the surface to be ground is completely in contact with the grinding plane on the grinding table, thereby improving the flatness and roughness of the surface to be ground.

[0030] It should be noted that a plunger pump contains a plurality of plunger shoe assemblies, and the plurality of plunger shoe assemblies form a group and move together. The consistency of the thickness dimension of the grinding surface 221 of the shoe body in a plunger pump is required to be relatively high.

[0031] Based on this, the present application provides multiple mounting parts on the pressure plate 100, and a plunger body is mounted on each mounting part. In other words, the pressure plate 100 in the present application can drive multiple sliding shoe bodies 220 to grind at the same time, thereby improving the consistency of the thickness of the grinding surface 221 in the same group of sliding shoe bodies.

[0032] Furthermore, the pressure plate 100 has a first end face and a second end face which are opposite to each other, and a plurality of mounting holes 110 penetrating the first end face and the second end face are opened on the pressure plate 100, and the plunger body 210 can extend into the mounting hole 110 so that the outer wall of the plunger body 210 fits with the inner wall of the mounting hole 110.

[0033] Specifically, a mounting hole 110 is opened at the mounting portion for mounting the plunger body 210 , and the outer wall of the plunger body 210 is fitted with the inner wall of the mounting hole 110 , so that the plunger body 210 does not shake during the grinding process, thereby improving the grinding accuracy.

[0034] Furthermore, an O-ring for fixing the plunger body 210 is disposed in the mounting hole 110 .

[0035] Specifically, an O-ring is provided to fix the plunger body 210 , and the plunger body 210 will not drive the shoe body 220 to slide up and down, thereby ensuring that the shoe body 220 can rotate under the gravity of the pressure plate 100 until the grinding surface 221 is completely in contact with the grinding plane.

[0036] Furthermore, the inner wall of the mounting hole 110 is recessed outward to form an annular groove 120 for accommodating an O-ring.

[0037] Specifically, the annular groove 120 is provided to accommodate the O-ring so that the O-ring will not excessively squeeze or scratch the plunger body 210 , thereby protecting the plunger body 210 .

[0038] Furthermore, at least two O-rings are disposed in the mounting hole 110 , and a plurality of O-rings are arranged along a height direction of the mounting hole 110 .

[0039] Specifically, multiple O-rings are arranged along the height direction. Even if there is a gap between the plunger body 210 and the mounting hole 110, the multiple O-rings arranged along the height direction can effectively fix the plunger body 210 to prevent the plunger body 210 from tilting left and right.

[0040] Furthermore, the pressure plate 100 is configured in a cylindrical shape, and the plurality of mounting holes 110 are evenly distributed along the circumference of the pressure plate 100 .

[0041] The multiple mounting holes 110 are evenly arranged along the axial direction of the pressure plate 100, which can make the weight distribution at various positions on the pressure plate 100 more uniform. When the pressure plate 100 is placed on the grinding table, the pressure plate 100 is not easy to tilt.

[0042] Furthermore, the pressure plate 100 is made of steel.

[0043] The pressure plate 100 is made of steel and has a relatively large weight, so as to provide sufficient force for the sliding shoe body 220 to rotate the sliding shoe body 220 until the grinding surface 221 is in contact with the grinding plane.

[0044] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0045] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A surface grinding tool for a plunger and a sliding shoe assembly, wherein the plunger and the sliding shoe assembly comprises a plunger body and a sliding shoe body, wherein a spherical pair is formed between the sliding shoe body and the plunger body, and the sliding shoe body has a surface to be ground at one end away from the plunger body, wherein: The surface grinding tool comprises: A grinding table having a grinding plane for contacting with the surface to be ground and grinding the sliding shoe body; A pressure plate is provided with a plurality of mounting portions, wherein the mounting portions are used to mount the plunger body; when the plunger body is mounted on the mounting portions, the slipper body is at least partially exposed to the outside of the pressure plate, and the slipper body can rotate relative to the plunger body under the action of the gravity of the pressure plate until the surface to be ground is in contact with the grinding plane.

2. A surface grinding tool for a plunger shoe assembly according to claim 1, characterized in that: The pressure plate has a first end face and a second end face which are opposite to each other. The pressure plate is provided with a plurality of mounting holes which penetrate the first end face and the second end face. The plunger body can extend into the mounting holes so that the outer wall of the plunger body fits with the inner wall of the mounting hole.

3. A surface grinding tool for a plunger shoe assembly according to claim 2, characterized in that: An O-ring for fixing the plunger body is arranged in the mounting hole.

4. A surface grinding tool for a plunger shoe assembly according to claim 3, characterized in that: The inner wall of the mounting hole is recessed outward to form a ring groove for accommodating an O-ring.

5. A surface grinding tool for a plunger shoe assembly according to claim 3, characterized in that: At least two O-rings are arranged in the mounting hole, and a plurality of O-rings are arranged along the height direction of the mounting hole.

6. A surface grinding tool for a plunger shoe assembly according to claim 2, characterized in that: The pressure plate is cylindrical, and the plurality of mounting holes are evenly distributed along the circumference of the pressure plate.

7. A surface grinding tool for a plunger shoe assembly according to claim 1, characterized in that: The pressure plate is made of steel.

Images