CN205075005U - Piston pulling off device - Google Patents

Abstract

This design is a piston pulling off device, during to the experimental study, often can meet the condition of pulling out the piston and design, this device is mainly including circle rim hand wheel (1), metal screw rod (2), bolt dish (3), U type support (5), circle rim hand wheel (1) is connected through the bottom screw in of U type support (5), metal screw rod one end connecting bolt dish (3), the other end in metal screw rod (2), with making piston (7) to be connected with metal screw rod (2), drive metal screw rod (2) rotation through rotating round rim hand wheel (1) in four hexagon socket head cap screw (4) precession piston rod (6) of bolt dish (3) during the use, utilize the pitch of metal screw rod (2) slowly to pull out piston (7), this device is light, and easy operation, laborsaving pulls out speed and hangs down, pulls out the easy control of distance, and the precision is high, can satisfy the demand of experimental study.

Description

A kind of piston pulling off device

Technical field

The design is a kind of piston pulling off device, can be used for the experimental implementation of various use piston, belongs to mechanical device design field.

Background technology

When carrying out experimental study, the needs because of experiment often can run into the situation being pressed into by piston, pulling out, and because device needs good air-tightness, be provided with O type circle around piston, the press-in of piston can use hydraulic jack to operate, simple and convenient.Because device needs good air-tightness, O type circle is installed around piston, so by piston pull-out comparatively difficulty, experimental study piston used is general less, and the distance of piston pull-out is short, sometimes then requires certain precision, utilize manpower to pull out too to require great effort, in some experiments, during pull-out piston, plunger shaft knows from experience generation negative pressure, can be more difficult by piston pull-out; Use his mechanical device pull-out excessive velocities, the distance of pull-out is wayward, can not meet the required precision of scientific experiment.

For the problems referred to above, design a kind of piston pulling off device, it is light, simple to operate, laborsaving, and pull-out speed is low, and pull-out distance easily controls, and precision is high, thus meets the demand of experimental study.

Summary of the invention

The total following a few part of this design is formed: disc handwheel (1), metal screw (2), bolt dish (3), U-shaped support (5).

Metal screw (2) by U-shaped steel bracket (5) bottom screw in, metal screw (2) can on U-shaped steel bracket free spiral rotation; Metal screw one end connecting bolt dish (3), the other end connects disc handwheel (1), bolt dish (3) and metal screw (2) are not fixed, very little moment of torsion can relatively rotate, but metal screw (2) can drive bolt dish (3) to move up and down, bolt dish (3) can be connected with piston (7) by four hexagon socket head cap screws (4); The other end fixes a disc handwheel (1), metal screw (2) can be driven to rotate by disc handwheel (1).

Shake disc handwheel (1) drives metal screw (2) in the upper helical rotation of U-shaped support (5), metal screw (2) is connected with piston (7) by bolt dish (3), utilize the pitch of metal screw (2), when metal screw (2) spiral shell goes out, drive piston (7) slowly to pull out by bolt dish (3).By the pitch of predetermined pull-out Distance geometry metal screw, thus determine the number of turns that pull-out front and back disc handwheel (1) is rotated and angle.

Accompanying drawing explanation

Fig. 1 is the using state schematic diagram of piston pulling off device; Fig. 2 is device sectional structure schematic diagram; Fig. 3 is bolt dish structural representation; Fig. 4 is disc handwheel structural representation.

In figure:

(1) disc handwheel;

(2) metal screw;

(3) bolt dish;

(4) hexagon socket head cap screw;

(5) U-shaped support;

(6) piston rod;

(7) piston;

(8) piston barrel

Detailed description of the invention

Select suitable metal screw by permissible accuracy and pull-out distance, by the pitch of required piston pull-out Distance geometry metal screw, determine the number of turns that disc handwheel rotates and angle.

Device is supported on piston barrel by the two ends of U-shaped support (5) opening, and the position of adjusting device, make bolt dish (3) corresponding with piston rod (6) as far as possible, rotate the position that disc handwheel (1) is about to bolt dish (3) and piston rod (6) contact, the position of adjusting device and bolt dish (3), makes the hexagon socket head cap screw (4) on bolt dish (3) align with the screw on piston rod (6); Then four hexagon socket head cap screws are screwed in piston rod, thus device is connected with piston (7).Rotate disc handwheel (1) to the rotating cycle calculated and angle, piston (7) is moved to the position of needs.When after end of operation, four hexagon socket head cap screws are screwed out, the connection of disconnecting apparatus and piston.

Claims (1)

1. a piston pulling off device, is characterized in that: comprise disc handwheel (1), metal screw (2), bolt dish (3), U-shaped support (5); Metal screw (2) is screwed in by the bottom of U-shaped support (5), and metal screw (2) can at the upper free spiral rotation of U-shaped support (5); Metal screw one end connecting bolt dish (3), the other end connects disc handwheel (1), and bolt dish (3) and metal screw (2) are not fixed, and very little moment of torsion can relatively rotate, but metal screw can drive bolt dish to move up and down; Bolt dish (3) can be connected with piston (7) by four hexagon socket head cap screws (4); The other end fixes a disc handwheel (1), metal screw (2) can be driven to rotate by rotating disc handwheel (1).