CN203650387U - Plunger pump servo piston detaching tool - Google Patents

Abstract

The utility model relates to a plunger pump servo piston detaching tool which comprises a base. The plunger pump servo piston detaching tool is characterized in that an upper installation flange is arranged on the base, a piston containing cavity is formed inside the base, a bottom through hole is formed in the lower portion of the piston containing cavity, the detaching tool further comprises a supporting frame, a screw and a sleeve, the supporting frame is provided with at least two supporting columns, the bottom portions of the supporting columns are installed on the upper installation flange, a threaded through hole connected with the screw is formed in the center of the top of the supporting frame, the screw penetrates through the threaded through hole of the supporting frame, the bottom of the screw is connected with the top of the sleeve in an axial fixing mode, the sleeve is provided with at least two lateral supporting legs, and each lateral supporting leg is hollow. The plunger pump servo piston detaching tool has the advantages that the outer surface of a servo piston does not need to be used for conducting clamping, and therefore the precise surface of the servo piston can not be damaged in the detaching process.

Description

Plunger displacement pump servo piston is disassembled frock

Technical field

This patent belongs to the assembling disassembling technology field of plunger displacement pump, particularly relates to plunger displacement pump servo piston and disassembles frock.

Background technology

When engineering machinery field is manufactured with waste and old plunger displacement pump again, first to it be can't harm and be disassembled.Servo piston in Variable plunger pump is used for regulating the angle of swash plate in pump work process, changes the flow of pump by the variation of swash plate angle, and the general configuration of servo piston as shown in Figure 1.Servo piston comprises a piston sleeve 106, in piston sleeve, be provided with jackshaft 105, on jackshaft, cover has Compress Spring, and Compress Spring is compressed by spring base 104, and spring base is blocked by the safety cap 101 on jackshaft, clasp 102 and the circlip for hole 103 that is stuck on piston sleeve.At present, servo piston be can't harm while disassembling, first will be by spring base by spring-compressed, could take out clasp and hole jump ring in diagram, and the spring rate of this servo piston is large, be not easy to compression, and the outer surface sleeve of servo piston be for pump case on cylinder barrel be used in conjunction with, its surface accuracy and fineness require very high, object that can not be using this surface as clamping.

Summary of the invention

This patent provides a kind of plunger displacement pump servo piston to disassemble frock for solving the technical problem existing in known technology, and this disassembles frock can avoid the damage to outer surface of piston.

A kind of plunger displacement pump servo piston is disassembled frock, comprises base, it is characterized in that: described base has upper mounting flange, and the inside of base is provided with piston accommodating cavity, and the bottom of piston accommodating cavity is provided with bottom through-hole, also includes: bracing frame, screw rod, sleeve.

Support frame as described above has at least two pillars, and the bottom of described pillar is arranged on mounting flange, and the top center of support frame as described above is provided with the tapped through hole being connected with screw rod;

Described screw rod is through the tapped through hole of bracing frame, and the bottom of screw rod is connected in the mode of axial restraint with the top of sleeve;

Described sleeve, described sleeve has at least two side legs, between each side leg, is hollow.

Advantage and good effect that this patent has are:

Because this patent adopts technique scheme; using this to disassemble frock disassembles plunger displacement pump servo piston; carry out clamping without the outer surface that utilizes servo piston; therefore disassemble in process and can not destroy its precision surface; also easy-to-operate of its spring-compressed mode, can complete easily the harmless of servo piston disassembled, and has significantly improved and has disassembled efficiency; use the less time of disassembling just can complete the harmless of servo piston and disassemble, harmless the disassembling of scale is achieved.

Accompanying drawing explanation

Fig. 1 is the structural representation of plunger displacement pump servo piston;

Fig. 2 is the structural representation of this patent;

Fig. 3 is the structural representation of base;

Fig. 4 is the structural representation of sleeve;

Fig. 5 is the top view of Fig. 4.

In figure: 1, bracing frame; 2, screw rod; 3, sleeve; 31, side leg; 4, attachment screw; 5, base; 51, upper mounting flange; 52, piston accommodating cavity; 53, bottom through-hole;

101, safety cap; 102, clasp; 103, circlip for hole; 104, spring base; 105, jackshaft; 106, piston sleeve.

The specific embodiment

For further understanding innovation and creation content, the Characteristic of this patent, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:

Refer to Fig. 2-5,

A kind of plunger displacement pump servo piston is disassembled frock, comprises base, and base has upper mounting flange 51, and the inside of base is provided with piston accommodating cavity 52, and the bottom of piston accommodating cavity is provided with bottom through-hole 53, also includes bracing frame 1, screw rod 2, sleeve 3,

This bracing frame is Chinese character " door " font, and bracing frame has at least two pillars, and the bottom of described pillar is arranged on mounting flange, and this bracing frame also has the crossbeam on two pillar tops of connection, and the center of crossbeam is provided with the tapped through hole being connected with screw rod; Screw rod is through the tapped through hole of bracing frame, and the bottom of screw rod is connected in the mode of axial restraint with the top of sleeve; Sleeve has two side legs, between two side legs, is hollow, and the bottom of the part of hollow is for the head of accommodating jackshaft 105.

The operating principle of this patent is:

While disassembling, first utilize screwdriver that the safety cap of servo piston 101 is taken off.

Again servo piston to be disassembled is put into the piston accommodating cavity 11 of disassembling tooling base 5, base 5 central bottom through holes 53 are for placing the jackshaft 105 of servo piston to be disassembled, bracing frame with screw rod 2, sleeve 31 use attachment screw 4 is connected with base 5, down twist again screw rod 2, the spring base 104 of the sleeve 3 being connected with screw rod 2 by servo piston be contained spring compression, then takes out hole jump ring 103 by corresponding tool and clasp 102 just can complete disassembling servo piston one end.

Servo piston tune is carried out to clamping, adopt identical disassembling method can complete disassembling of its other end.

Although by reference to the accompanying drawings the preferred embodiment of this patent is described above, but this patent is not limited to the above-mentioned specific embodiment, the above-mentioned specific embodiment is only schematic, be not restrictive, those of ordinary skill in the art is under the enlightenment of this patent, do not departing from the scope situation that this patent aim and claim protect, can also make a lot of forms, for example: bracing frame is made to inverted " U " font or arch, or in order to increase the rigidity of bracing frame, install 3 or 4 pillars to bracing frame, within these all belong to the protection domain of this patent.

Claims (1)

1. plunger displacement pump servo piston is disassembled a frock, comprises base, it is characterized in that: described base has upper mounting flange, and the inside of base is provided with piston accommodating cavity, and the bottom of piston accommodating cavity is provided with bottom through-hole, also includes: bracing frame, screw rod, sleeve,

Support frame as described above has at least two pillars, and the bottom of described pillar is arranged on mounting flange, and the top center of support frame as described above is provided with the tapped through hole being connected with screw rod;

Described screw rod is through the tapped through hole of bracing frame, and the bottom of screw rod is connected in the mode of axial restraint with the top of sleeve;

Described sleeve, described sleeve has at least two side legs, between each side leg, is hollow.

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