CN205858841U - A kind of cone seals micro hydraulic oil cylinder - Google Patents

Abstract

This utility model belongs to mechanical field, especially relates to a kind of cone and seals micro hydraulic oil cylinder.Described oil cylinder includes drive end bearing bracket, rear end cap, cylinder barrel, piston rod, described piston rod moves back and forth in cylinder barrel, and drive end bearing bracket is connected with cylinder barrel one end, and rear end cap is connected with the cylinder barrel other end, the face that wherein said drive end bearing bracket contacts with cylinder barrel forms a conical surface, also formation one conical surface corresponding on cylinder barrel；The face that described rear end cap contacts with cylinder barrel forms a conical surface, also formation one conical surface corresponding on cylinder barrel.After using technique scheme, this utility model compared with prior art has the advantages that 1) compared with welding connection structure, cylinder barrel and end cap junction will not produce sweating heat deformation, avoid drive end bearing bracket will not produce impact with the axiality of cylinder barrel, and owing to being cone match, the high-axiality of piston rod and cylinder barrel can be ensured, so the service behaviour of oil cylinder will be improved.

Description

A kind of cone seals micro hydraulic oil cylinder

Technical field

This utility model belongs to mechanical field, especially relates to a kind of cone and seals micro hydraulic oil cylinder.

Background technology

In prior art, with cylinder barrel connected mode employing of the forward and backward end cap of micro hydraulic oil cylinder is welded and two kinds of companies of screw thread more Access node structure；When using these two kinds of frame modes, there are two kinds of drawbacks: one is that the volume bored and seal micro hydraulic oil cylinder all can with weight Increase；Two be end cap pilot hole and internal diameter of cylinder axiality precision it is difficult to ensure that.

In view of this, special proposition this utility model.

Utility model content

This utility model provides one cone to seal micro hydraulic oil cylinder, can improve this cone and seal the work of micro hydraulic oil cylinder Make performance, reliability, reduce cone the most to greatest extent and seal the volume and weight of micro hydraulic oil cylinder.

For solving above-mentioned technical problem, the present invention uses the basic conception of technical scheme to be:

A kind of cone seals micro hydraulic oil cylinder, and described oil cylinder includes drive end bearing bracket, rear end cap, cylinder barrel, piston rod, described piston Bar moves back and forth in cylinder barrel, and drive end bearing bracket is connected with cylinder barrel one end, and rear end cap is connected with the cylinder barrel other end, wherein said drive end bearing bracket The face contacted with cylinder barrel forms a conical surface, also formation one conical surface corresponding on cylinder barrel；The face shape that described rear end cap contacts with cylinder barrel Become a conical surface, also formation one conical surface corresponding on cylinder barrel.

Further, the tapering of the described conical surface is 1:50.

After using technique scheme, this utility model compared with prior art has the advantages that

1) compared with welding connection structure, cylinder barrel and end cap junction will not produce sweating heat deformation, it is to avoid drive end bearing bracket with The axiality of cylinder barrel will not produce impact, and owing to being cone match, it is ensured that piston rod and the high-axiality of cylinder barrel, thus oily The service behaviour of cylinder will be improved.

2) compared with screw connection structure, forward and backward end cap need not process screw thread and is radially positioning boss and sealing The structures such as groove, its overall dimensions can be accomplished less, and axiality is higher simultaneously.

3) this utility model is that adopting conical surface interference coordinates, it is not necessary to use rubber seal and the seal groove of special processing thereof.Therefore Simple and compact for structure, size is little, lightweight, and oil cylinder belongs to mechanical seal form, to the working media of oil cylinder and temperature etc. The better adaptability of parameter.

4) higher pressure can be born, apply this connected mode to carry out cone and seal the processing of micro hydraulic oil cylinder, repeatedly real Test operating pressure and can reach more than 30MPa.

Accompanying drawing explanation

Fig. 1 is exploded view of the present utility model.

Fig. 2 is time without thrust of the present utility model surface contact state structural representation；

Fig. 3 is compression fit-state structural representation of the present utility model.

1-drive end bearing bracket, 2-rear end cap, 3-cylinder barrel, 4-piston rod

Detailed description of the invention

Below in conjunction with specific embodiments and the drawings, this utility model is further explained explanation.

A kind of cone seals micro hydraulic oil cylinder, as it is shown in figure 1, described oil cylinder includes drive end bearing bracket 1, rear end cap 2, cylinder barrel 3, lives Stopper rod 4, described piston rod 4 moves back and forth in cylinder barrel 3, and drive end bearing bracket 1 is connected with cylinder barrel 3 one end, rear end cap 2 and cylinder barrel 3 another End connects, and the face that wherein said drive end bearing bracket 1 contacts with cylinder barrel 3 is 1:50 tapering, and the face that cylinder barrel 3 contacts with drive end bearing bracket 1 is the most corresponding The conical surface of formation one correspondence, form interference fit when compressing completely；The face that described rear end cap 2 contacts with cylinder barrel 3 is 1:50 Tapering, the face that cylinder barrel 3 contacts with drive end bearing bracket 2 forms a corresponding conical surface the most accordingly, forms interference fit when compressing completely.

Cylinder barrel 3 manufactures according to end cap, it is desirable to face contacts, it is ensured that reserving a size of under 1:50 tapering and natural mated condition Design size, as shown in Figure 2.

The when of use, compress rear end cap 2 and cylinder barrel 3 by external force, allow it be compressed at the end completely, form interference fit, Complete the connection of rear end cap 2 and cylinder barrel 3；Load piston rod 4, then make drive end bearing bracket 1 compress with cylinder barrel 3 by external force, complete micro- Type hydraulic cylinder assembly working, as shown in Figure 3.

The above is only preferred implementation of the present utility model, it is noted that for the common skill of the art For art personnel, on the premise of without departing from this utility model principle, it is also possible to make some improvements and modifications, these improve and Retouching also should be regarded as protection domain of the present utility model.

Claims (2)

1. a cone seals micro hydraulic oil cylinder, it is characterised in that described oil cylinder includes drive end bearing bracket, rear end cap, cylinder barrel, piston Bar, described piston rod moves back and forth in cylinder barrel, and drive end bearing bracket is connected with cylinder barrel one end, and rear end cap is connected with the cylinder barrel other end, its Described in the face that contacts with cylinder barrel of drive end bearing bracket form a conical surface, also formation one conical surface corresponding on cylinder barrel；Described rear end cap and cylinder The face of cylinder contact forms a conical surface, also formation one conical surface corresponding on cylinder barrel.

2. cone as claimed in claim 1 seals micro hydraulic oil cylinder, it is characterised in that the tapering of the described conical surface is 1:50.