CN216398827U

CN216398827U - Special fixture for plunger pump cylinder lathe

Info

Publication number: CN216398827U
Application number: CN202123091594.6U
Authority: CN
Inventors: 王春永
Original assignee: Shanghai Beiyu Precision Machinery Co ltd
Current assignee: Shanghai Beiyu Precision Machinery Co ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-04-29
Anticipated expiration: 2031-12-10

Abstract

The utility model provides a special lathe fixture for a plunger pump cylinder body, which comprises a bottom plate, wherein a base is fixed in the center of the bottom plate and comprises a disc bottom and a central column, 4 support columns are uniformly distributed on the disc bottom, a connecting block is fixed above the central column, positioning parts are elastically connected to two sides of the connecting block, two supporting parts are fixed at the upper end of the connecting block, and a positioning block is elastically connected to the center of the connecting block; a long screw is connected to the center of the connecting block in a threaded manner, the long screw penetrates through the positioning block, a pressure head support is arranged at the end of the long screw, and at least three pressure heads are arranged below the pressure head support; the locating piece corresponds with the circular recess at plunger pump cylinder body top for the cylinder body is fixed a position in the middle of, and the curved surface of setting element corresponds with the inside curved surface of cylinder body, and the restriction cylinder body is rotatory, under the effect of pressure head and protective head, can effectively press from both sides tight plunger pump cylinder body, and prevent that the cylinder body from adding the shake man-hour, and is more stable.

Description

Special fixture for plunger pump cylinder lathe

Technical Field

The utility model relates to the field of machine tool fixtures, in particular to a special fixture for a plunger pump cylinder body lathe.

Background

The plunger pump is an important device of a hydraulic system, and realizes oil absorption and oil pressing by changing the volume of a sealed working cavity through the reciprocating motion of a plunger in a cylinder body. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency, convenient flow regulation and the like, but in the prior art, the plunger pump cylinder body processing clamp shown in figure 4 is not perfect enough, the accurate positioning and clamping of the cylinder body cannot be realized, the stability of the cylinder body on the clamp cannot be ensured in the cylinder body processing process, and the cylinder body processing precision is low.

Disclosure of Invention

The utility model mainly aims to provide a special fixture for a plunger pump cylinder lathe, which solves the problem that a cylinder workpiece cannot be accurately positioned and clamped by a method when being processed.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the plunger pump comprises a bottom plate, wherein a base is fixed in the center of the bottom plate, the base comprises a disc bottom, the disc bottom comprises a central column arranged in the center, 4 support columns are uniformly distributed on the disc bottom and used for supporting a plunger pump cylinder body, a connecting block is fixed above the central column, two sides of the connecting block are elastically connected with positioning pieces, and two supporting pieces are fixed at the upper end of the connecting block;

the center of the connecting block is elastically connected with a positioning block for positioning the cylinder body of the plunger pump; the central threaded connection of connecting block has the long screw, the long screw passes the locating piece, the tip of long screw is provided with the pressure head support, the below of pressure head support is provided with at least three pressure head for compress tightly the plunger pump cylinder body.

Preferably, two short rods are arranged below the positioning piece, first limiting holes are formed in the short rods, first plug pin holes are formed in the connecting block at positions corresponding to the first limiting holes, and first plug pins are inserted into the first plug pin holes; a first spring is arranged between the bottom of the short rod and the connecting block.

Preferably, a rod part of the positioning block is provided with a second limiting hole, the connecting block is provided with a second bolt hole at a position corresponding to the second limiting hole, and a second bolt is inserted into the second bolt hole; and a second spring is arranged between the bottom of the positioning block and the connecting block.

Preferably, a third limiting hole is formed in the central column, a support ring is sleeved on the central column, a third bolt hole is formed in the support ring, corresponds to the third limiting hole, a third bolt is inserted into the third bolt hole, and a third spring is arranged between the bottom of the support ring and the disc bottom.

Preferably, the top of the central column is provided with a groove, and the groove is located right below the long screw.

Preferably, be fixed with 2 at least compression support on the bottom plate, the top that compresses tightly the support is provided with the briquetting, be provided with the spacing groove on the briquetting, the limiting inslot has passed the short screw, the lower extreme of short screw is fixed compress tightly on the support, the upper end threaded connection of short screw has the nut, the bottom of briquetting is provided with the spout, the kicking block has been inserted in the spout, the lower extreme of kicking block is fixed compress tightly on the support, the briquetting is being close to one side of base is provided with the protection head, the protection head surface is equipped with rough layer for compress tightly the plunger pump cylinder body.

Has the advantages that: the positioning block corresponds to a circular groove at the top of the cylinder body of the plunger pump, so that the cylinder body is positioned in the center, and the curved surface of the positioning piece corresponds to the curved surface in the cylinder body to limit the rotation of the cylinder body; under the effect of pressure head and protective head, can effectively press from both sides tight plunger pump cylinder body to prevent that the cylinder body from adding the shake in man-hour, it is more stable.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of a portion of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

FIG. 4 is a schematic view of the cylinder of the plunger pump requiring fixing according to the present invention;

FIG. 5 is an internal structural view of a cylinder of the plunger pump;

wherein, 1, a bottom plate; 2. a base; 3. a disc bottom; 4. a central column; 5. a support pillar; 6. connecting blocks; 7. a positioning member; 8. a support member; 9. positioning blocks; 10. a long screw; 11. a pressure head support; 12. a pressure head; 13. a short bar; 14. a first limit hole; 15. a first pin hole; 16. a first latch; 17. a first spring; 18. a second limiting hole; 19. a second pin hole; 20. a second bolt; 21. a second spring; 22. a third limiting hole; 23. a support ring; 24. a third plug hole; 25. a third bolt; 26. a third spring; 27. a groove; 28. pressing the support; 29. briquetting; 30. a limiting groove; 31. a short screw; 32. a nut; 33. a chute; 34. a top block; 35. a protective head; 36. a rough layer.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the utility model.

As shown in fig. 2, 3 and 4, the utility model provides a special lathe fixture for a plunger pump cylinder, which comprises a bottom plate 1, wherein a base 2 is fixed at the center of the bottom plate 1, the base 2 comprises a disc bottom 3, the disc bottom 3 comprises a central column 4 arranged at the center, a groove 27 is arranged at the top of the central column 4, the groove 27 is positioned right below a long screw 10, and when the long screw 10 is screwed downwards, the long screw cannot be clamped due to the existence of the groove 27; 4 support columns 5 are uniformly distributed on the disc bottom 3 and used for supporting the plunger pump cylinder body, and the 4 support columns 5 correspond to four corners of the plunger pump cylinder body in the embodiment and are stable in supporting; center post 4's top is fixed with connecting block 6, connecting block 6 is type, connecting block 6's both sides elastic connection has setting element 7, and setting element 7 in this embodiment is as follows with connecting block 6 elastic connection mode: two short rods 13 are arranged below the positioning piece 7, first limiting holes 14 are formed in the short rods 13, first bolt holes 15 are formed in the connecting block 6 at positions corresponding to the first limiting holes 14, and first bolts 16 are inserted in the first bolt holes; a first spring 17 is arranged between the bottom of the short rod 13 and the connecting block 6, and the short rod 13 can slide in the stroke limited by the first limit hole 14; two supporting pieces 8 are fixed at the upper end of the connecting block 6, the supporting pieces 8 are concave, the two ends of each concave supporting piece 8 are matched with the shape of the inside of the cylinder body of the plunger pump, and the supporting effect is good.

The central elastic connection of connecting block 6 has locating piece 9, the tip of locating piece 9 is the round platform form and coincide with the inside shape of plunger pump cylinder body for the plunger pump cylinder body of location, the lower part of locating piece 9 is shaft-like structure, and locating piece 9 and connecting block 6's elastic connection mode is as follows in this embodiment: a second limiting hole 18 is formed in the rod part of the positioning block 9, a second bolt hole 19 is formed in the connecting block 6 at a position corresponding to the second limiting hole 18, and a second bolt 20 is inserted into the second bolt hole; a second spring 21 is arranged between the bottom of the positioning block 9 and the connecting block 6, and the positioning block 9 can slide in the stroke limited by the second limiting hole 18; the central authorities threaded connection of connecting block 6 has long screw 10, long screw 10 passes locating piece 9, the tip of long screw 10 is provided with pressure head support 11, the below of pressure head support 11 is provided with at least three pressure head 12 for compress tightly the plunger pump cylinder body, the upper end of long screw 10 is the hexagon nut form, and the long screw 10 of being convenient for is screwed up, unscrews.

The central column 4 is provided with a third limiting hole 22, the central column 4 is sleeved with a support ring 23, the support ring 23 is provided with a third bolt hole 24 corresponding to the third limiting hole 22 and inserted with a third bolt 25, a third spring 26 is arranged between the bottom of the support ring 23 and the disc bottom 3, the support ring 23 can slide on the central column 4 in the stroke limited by the third limiting hole 22, and when the plunger pump rod body is placed on the clamp, the support ring 23 can play a certain supporting and buffering role.

As shown in fig. 1, at least 2 pressing supports 28 are fixed on the bottom plate 1, a pressing block 29 is arranged above the pressing supports 28, a limiting groove 30 is arranged on the pressing block 29, a short screw 31 penetrates through the limiting groove 30, the lower end of the short screw 31 is fixed on the pressing supports 28, the pressing block 29 can slide under the limitation of the limiting groove 30 and the short screw 31, a nut 32 is connected to the upper end of the short screw 31 in a threaded manner, a sliding groove 33 is arranged at the bottom of the pressing block 29, a top block 34 is inserted into the sliding groove 33, the lower end of the top block 34 is fixed on the pressing supports 28, the pressing block 29, the short screw 31 and the top block 34 form a lever mechanism, and when the nut 32 is screwed downwards, one end of the pressing block 29 can be pressed downwards; briquetting 29 is close to the one end of base 2 perks upwards, and the below of perk end is provided with protection head 35, protection head 35 surface is equipped with coarse layer 36, coarse layer 36 is obtained by current rough treatment process, has increased the frictional force between protection head 35 and the plunger pump cylinder body for compress tightly the plunger pump cylinder body.

In the embodiment, when the plunger pump cylinder is used, the short screw 31 is firstly unscrewed, the pressing block 29 slides outwards, so that the plunger pump cylinder can be conveniently placed in, the long screw 10 and the support 11 of the pressing head 12 are taken down together, the plunger pump cylinder can be placed in at the moment, when the plunger pump cylinder is placed in, the positioning block 9 corresponds to the circular groove at the top of the cylinder, so that the cylinder is centered, and the curved surface of the positioning part 7 corresponds to the curved surface in the cylinder, so that the cylinder cannot rotate; after the cylinder body is put in, the long screw 10 is inserted into a hole above the cylinder body and the long screw 10 is screwed, at the moment, the pressure head support 11 drives the pressure head 12 to press the cylinder body downwards, and the support piece 8 and the support column 5 play a role in supporting the cylinder body; in order to further stabilize the clamping of the cylinder, the nut 32 is screwed down, the pressing block 29 drives the protection head 35 to press the cylinder under the action of the nut 32, and the rough layer 36 on the surface of the protection head 35 is contacted with the cylinder to press the cylinder.

Claims

1. The special lathe fixture for the plunger pump cylinder body is characterized by comprising a bottom plate (1), wherein a base (2) is fixed in the center of the bottom plate (1), the base (2) comprises a disc bottom (3), the disc bottom (3) comprises a central column (4) arranged in the center, 4 support columns (5) are uniformly distributed on the disc bottom and used for supporting the plunger pump cylinder body, a connecting block (6) is fixed above the central column (4), two sides of the connecting block (6) are elastically connected with positioning pieces (7), and two supporting pieces (8) are fixed at the upper end of the connecting block (6);

the center of the connecting block (6) is elastically connected with a positioning block (9) for positioning the cylinder body of the plunger pump; the central thread of connecting block (6) is connected with long screw (10), long screw (10) pass locating piece (9), the tip of long screw (10) is provided with pressure head support (11), the below of pressure head support (11) is provided with at least three pressure head (12) for compress tightly the plunger pump cylinder body.

2. The special lathe fixture for the cylinder body of the plunger pump as claimed in claim 1, wherein two short rods (13) are arranged below the positioning piece (7), a first limiting hole (14) is arranged on each short rod (13), a first bolt hole (15) is arranged in the connecting block (6) at a position corresponding to the first limiting hole, and a first bolt (16) is inserted into the first bolt hole; a first spring (17) is arranged between the bottom of the short rod (13) and the connecting block (6).

3. The special lathe fixture for the cylinder block of the plunger pump as claimed in claim 1, wherein the rod part of the positioning block (9) is provided with a second limiting hole (18), the connecting block (6) is provided with a second bolt hole (19) at a position corresponding to the second limiting hole (18), and a second bolt (20) is inserted into the second bolt hole; a second spring (21) is arranged between the bottom of the positioning block (9) and the connecting block (6).

4. The special lathe fixture for the cylinder body of the plunger pump as claimed in claim 1, wherein a third limiting hole (22) is formed in the central column (4), a support ring (23) is sleeved on the central column (4), a third bolt hole (24) is formed in the support ring (23) and corresponds to the third limiting hole (22), a third bolt (25) is inserted into the third limiting hole, and a third spring (26) is arranged between the bottom of the support ring (23) and the disc bottom (3).

5. The special lathe fixture for the cylinder block of the plunger pump as claimed in claim 1, wherein a groove (27) is formed in the top of the central column (4), and the groove (27) is located right below the long screw (10).

6. The special lathe fixture for the cylinder body of the plunger pump as claimed in claim 1, wherein at least 2 pressing support seats (28) are fixed on the bottom plate (1), a pressing block (29) is arranged above the pressing support seats (28), a limiting groove (30) is arranged on the pressing block (29), a short screw (31) penetrates through the limiting groove (30), the lower end of the short screw (31) is fixed on the pressing support seats (28), a nut (32) is connected to the upper end of the short screw (31) in a threaded manner, a sliding groove (33) is arranged at the bottom of the pressing block (29), an ejector block (34) is inserted into the sliding groove (33), the lower end of the ejector block (34) is fixed on the pressing support seats (28), a protection head (35) is arranged on one side of the pressing block (29) close to the base (2), and a rough layer (36) is arranged on the surface of the protection head (35), used for pressing the cylinder body of the plunger pump.