CN209146026U

CN209146026U - A compact piston body structure for oil cylinder

Info

Publication number: CN209146026U
Application number: CN201822076683.5U
Authority: CN
Inventors: 汤英姣; 罗春艳
Original assignee: HEFEI LIHENG HYDRAULIC SYSTEM CO Ltd
Current assignee: HEFEI LIHENG HYDRAULIC SYSTEM CO Ltd
Priority date: 2018-12-11
Filing date: 2018-12-11
Publication date: 2019-07-23
Anticipated expiration: 2028-12-11

Abstract

The utility model provides a kind of compact oil cylinder piston body structure, including head, piston rod, the first port connection and the second port connection；Head is set to piston rod top end, and " L " type head oilhole is provided in head, and the first port connection is equipped at " L " type head oilhole upward opening, piston rod is connected at " L " type head oilhole lateral openings, piston rod is equipped with the second port connection；Piston rod includes hollow stem, oil pipe and bushing, is equipped with oil pipe inside hollow stem, and fix by bushing and oil pipe；The outer diameter of oil pipe is slightly less than hollow stem internal diameter, surrounds hollow rod through-hole between oil pipe, hollow stem and bushing jointly, and hollow rod through-hole front is provided with the fuel feed hole being connected with the second port connection, and hollow rod through-hole rear portion is provided with oil outlet.The utility model is compact-sized, by two independent oil circuits and oil inlet and outlet combination in the same piston body, solves the problems, such as that compact cylinder piston rod and port size are compact, installs and uses convenient for client.

Description

A kind of compact oil cylinder piston body structure

Technical field

The utility model relates to oil cylinder technical field more particularly to a kind of compact oil cylinder piston body structures.

Background technique

Oil cylinder, that is, hydraulic cylinder is that the directly proportional linear motion type of pressure difference on power output and piston effective area and its both sides is held Units, its function are that hydraulic energy is converted into mechanical energy.Oil cylinder is mainly by cylinder barrel, cylinder cap, piston body, sealing device, slow Flushing device and exhaust apparatus form, wherein buffer unit and exhaust apparatus are depending on concrete application occasion, other dresses such as piston body It is then essential to set.

Currently, the oil cylinder of some specific uses, miniaturization and lightweight requirements are high, need that size is small, installation space is compact, And traditional oil cylinder is not able to satisfy above-mentioned requirement.

Accordingly, it is badly in need of improving the associated components structure of existing oil cylinder at present, makes whole using the oil cylinder of the structure Size can reduce, to meet the needs of installation space is compact.

Utility model content

The technical problem to be solved by the utility model is to provide a kind of compact oil cylinder piston body structures, make to use The oil cylinder overall dimensions of the piston body structure can reduce, to meet the needs of installation space is compact.

The utility model solves above-mentioned technical problem using following technical scheme:

A kind of compact oil cylinder piston body structure, including head, piston rod, the first port connection and the second hydraulic fluid port connect Head；The head is specifically set to piston rod top end, and " L " type head oilhole is provided in head, and " L " type head oilhole is opened upwards It is equipped with the first port connection at mouthful, piston rod is connected at the lateral openings of " L " type head oilhole, piston rod is equipped with the second hydraulic fluid port Connector；

The piston rod specifically includes hollow stem, oil pipe and bushing, is equipped with inside hollow stem and is connected with " L " type head oilhole Logical oil pipe, and mutually fixed by bushing with the oil pipe；The outer diameter of the oil pipe is slightly less than hollow stem internal diameter, oil pipe, hollow Hollow rod through-hole is surrounded between bar and bushing jointly, hollow rod through-hole front is provided with the oil inlet being connected with the second port connection Hole, hollow rod through-hole rear portion are provided with oil outlet.

One of preferred embodiment as the utility model, the internal cavities of the oil pipe tube body constitute oil pipe through-hole, described Oil pipe through-hole connects with the lateral openings of " L " type head oilhole.

One of preferred embodiment as the utility model, the fuel feed hole are specially one, and it is logical to be vertically installed in hollow stem The front end in hole, and be connected with the second port connection of its opening.

One of preferred embodiment as the utility model, the oil outlet are specially two, and it is logical to be vertically installed in hollow stem The position rearward in hole, and set relatively.

One of preferred embodiment as the utility model, between the head and piston rod, head and the first port connection Between and piston rod and the second port connection between, by be welded and fixed be connected and sealing.

One of preferred embodiment as the utility model, the oil pipe pass through hollow stem, and by bushing and hollow stem Wall keeps certain interval；It is the hollow stem, oil pipe, connected by being welded and fixed between bushing.

The utility model compared with prior art the advantages of be: the utility model structure is simple, compact, easy to use, will Two independent oil circuits and oil inlet and outlet combination solve compact cylinder piston rod and port size are tight in the same piston body The problem of gathering makes to can reduce using the oil cylinder overall dimensions of the piston body structure, thus meet the needs of installation space is compact, It is installed and used convenient for client.

Detailed description of the invention

Fig. 1 is the overall structure diagram of compact oil cylinder piston body structure in embodiment 1.

In figure: 1 is head, and 11 be " L " type head oilhole, and 111 be upward opening, and 112 be lateral openings, and 2 be piston rod, 21 be hollow stem, and 211 be hollow rod through-hole, and 22 be oil pipe, and 221 be oil pipe through-hole, and 23 be bushing, and 24 be fuel feed hole, and 25 is out Oilhole, 3 be the first port connection, and 4 be the second port connection.

Specific embodiment

It elaborates below to the embodiments of the present invention, the present embodiment before being with technical solutions of the utility model It puts and is implemented, the detailed implementation method and specific operation process are given, but the protection scope of the utility model is unlimited In following embodiments.

Embodiment 1

As shown in Figure 1, a kind of compact oil cylinder piston body structure of the present embodiment, including head 1, piston rod 2, first Port connection 3 and the second port connection 4.Head 1 is specifically set to 2 top of piston rod, and " L " type head oilhole is provided in head 1 11, the first port connection 3, the lateral openings of " L " type head oilhole 11 are equipped at the upward opening 111 of " L " type head oilhole 11 Piston rod 2 is connected at 112, piston rod 2 is equipped with the second port connection 4.

Piston rod 2 specifically includes hollow stem 21, oil pipe 22 and bushing 23, is equipped with inside hollow stem 21 and " L " type head oil The oil pipe 22 that hole 11 is connected, and fixed by bushing 23 and 22 phase of oil pipe, it is logical that the internal cavities of 22 tube body of oil pipe constitute oil pipe Hole 221, oil pipe through-hole 221 connect with the lateral openings 112 of " L " type head oilhole 11；The outer diameter of the oil pipe 22 is slightly less than sky 21 internal diameter of core bar, surrounds hollow rod through-hole 211 jointly between oil pipe 22, hollow stem 21 and bushing 23, before hollow rod through-hole 211 Portion is provided with the fuel feed hole 24 being connected with the second port connection 4, and hollow 211 rear portion of rod through-hole is provided with oil outlet 25.Wherein, fuel feed hole 24 be specially one, is vertically installed in the front end of hollow rod through-hole 211, and be connected with the second port connection 4 of its opening； Oil outlet 25 is specially two, is vertically installed in the position rearward of hollow rod through-hole 211, and set relatively.

Further, between head 1 and piston rod 2, between head 1 and the first port connection 3 and piston rod 2 and Between two port connections 4, it is connected and seals by being welded and fixed.

Further, oil pipe 22 passes through hollow stem 21, and keeps certain interval by bushing 23 and 21 inner wall of hollow stem；It is empty It is core bar 21, oil pipe 22, connected by being welded and fixed between bushing 23.

Production method:

(1) fuel feed hole 24 and two oil outlets 25 are processed respectively on hollow stem 21；

(2) certain internal diameter and welding groove size are processed at 21 both ends of hollow stem, load onto oil pipe 22 and bushing 23, It is fastenedly connected and seals by welding again；

(3) postwelding requires the groove size of second welding of processing according to design size, then with head 1, the first hydraulic fluid port Connector 3,4 groups of the second port connection weld；

(4) polishing welding seams surface checks storage qualified products.

The course of work: being equipped with the oil cylinder of the piston body, and when work, hydraulic oil enters from the first port connection 3, along " L " Type head oilhole 11 enters oil pipe through-hole 221 and enters inside oil cylinder, completes oil inlet process, makes oil cylinder movement；Oil revolving end simultaneously, liquid Pressure oil passes through oil outlet 25 inside oil cylinder, is returned into hollow rod through-hole 211 from the 24 to the second port connection of fuel feed hole 4 Oil.

The present embodiment advantage are as follows:

(1) structure is simple, compact, easy to use；

(2) two asphalt channels are formed inside piston body, first oil duct is to connect " L " type bar from the first port connection 3 Hair oil hole 11 and oil pipe through-hole 221 form；Article 2 oil duct be from the second port connection 4 pass through hollow stem 21 on fuel feed hole 24 into Enter hollow rod through-hole 211, then passes through the outflow of oil outlet 25；The oil inlet and outlet of two-way cylinder is all disposed within together by the present embodiment On one piston body, solves the problems, such as that compact oil cylinder piston body and port size are compact, installed and used convenient for client.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims

1. A piston body structure for a compact oil cylinder, characterized in that it comprises a rod head, a piston rod, a first oil port joint and a second oil port joint; the rod head is specifically arranged on the top end of the piston rod, and the rod head opens There is an "L" type rod head oil hole. The upward opening of the "L" type rod head oil hole is provided with a first oil port joint. The lateral opening of the "L" type rod head oil hole is connected to the piston rod. A second oil port connector is provided;

The piston rod specifically includes a hollow rod, an oil pipe and a bushing. The hollow rod is provided with an oil pipe connected to the oil hole of the "L" type rod head, and is fixed with the oil pipe through the bushing; the outer diameter of the oil pipe is Slightly smaller than the inner diameter of the hollow rod, the oil pipe, the hollow rod and the bushing together form a hollow rod through hole. The front part of the hollow rod through hole has an oil inlet connected to the second oil port joint, and the rear part of the hollow rod through hole is opened. There are oil outlet holes.

2 . The piston body structure for a compact oil cylinder according to claim 1 , wherein the inner cavity of the oil pipe body constitutes an oil pipe through hole, and the oil pipe through hole and the “L”-shaped rod head oil hole are connected. 3 . Side openings meet.

3 . The piston body structure for a compact oil cylinder according to claim 1 , wherein the oil inlet hole is specifically one, which is vertically arranged at the front end of the through hole of the hollow rod, and is connected with the second oil port joint at the opening. 4 . connected.

4 . The compact piston body structure for an oil cylinder according to claim 1 , wherein there are two oil outlet holes, which are vertically arranged at a rearward position of the hollow rod through hole and oppositely arranged. 5 .

5. The piston body structure for a compact oil cylinder according to claim 1, characterized in that between the rod head and the piston rod, between the rod head and the first oil port joint, and between the piston rod and the second oil port The joints are connected and sealed by welding.

6 . The piston body structure for a compact oil cylinder according to claim 1 , wherein the oil pipe passes through the hollow rod and maintains a certain gap with the inner wall of the hollow rod through a bushing; the hollow rod, the oil pipe, the bushing They are fixedly connected by welding.