阅读说明：本技术 一种液压油缸用导向套 (Guide sleeve for hydraulic cylinder ) 是由 陈海燕 于 2019-11-26 设计创作，主要内容包括：本发明提供一种液压油缸用导向套。所述液压油缸用导向套包括：连接底座和活塞杆；导向套,所述导向套的一端活动卡接在连接底座上；空腔,所述空腔开设于所述导向套的内部；若干个凹槽,若干个所述凹槽等间距环形开设于所述导向套的内壁上；若干个连通槽,若干个连通槽的两端分别连通于若干个所述凹槽和空腔；钢珠,所述钢珠嵌设于所述凹槽上；T形槽,所述T形槽开设于所述导向套的顶部,所述T形槽的底部与所述空腔连通。本发明提供的液压油缸用导向套具有使导向套与活塞杆的摩擦减小,增加了导向套与活塞杆的耐久性,活塞杆和导向套之间摩擦产生的热量减小,保证液压缸工作的稳定性以及提高了液压缸的使用寿命。(The invention provides a guide sleeve for a hydraulic oil cylinder. The uide bushing for the hydraulic cylinder includes: connecting the base and the piston rod; one end of the guide sleeve is movably clamped on the connecting base; the cavity is arranged in the guide sleeve; the grooves are annularly formed on the inner wall of the guide sleeve at equal intervals; the two ends of the plurality of communicating grooves are respectively communicated with the plurality of grooves and the cavity; the steel ball is embedded in the groove; the T-shaped groove is formed in the top of the guide sleeve, and the bottom of the T-shaped groove is communicated with the cavity. The guide sleeve for the hydraulic cylinder provided by the invention has the advantages that the friction between the guide sleeve and the piston rod is reduced, the durability of the guide sleeve and the piston rod is improved, the heat generated by the friction between the piston rod and the guide sleeve is reduced, the working stability of the hydraulic cylinder is ensured, and the service life of the hydraulic cylinder is prolonged.)

1. The utility model provides a uide bushing for hydraulic cylinder which characterized in that includes:

connecting the base and the piston rod;

one end of the guide sleeve is movably clamped on the connecting base;

the cavity is arranged in the guide sleeve;

the grooves are annularly formed on the inner wall of the guide sleeve at equal intervals;

the two ends of the plurality of communicating grooves are respectively communicated with the plurality of grooves and the cavity;

the steel ball is embedded in the groove;

the T-shaped groove is formed in the top of the guide sleeve, and the bottom of the T-shaped groove is communicated with the cavity.

2. The guide sleeve for the hydraulic oil cylinder as claimed in claim 1, wherein one end of the connecting base is provided with a circular groove matched with the guide sleeve, and two clamping components are welded at one end of the connecting base and positioned outside the circular groove.

3. The guide sleeve for the hydraulic oil cylinder as claimed in claim 1, wherein clamping columns are symmetrically welded to the upper side and the lower side of one end of the guide sleeve, and clamping grooves matched with the clamping components are formed in the clamping columns.

4. The guide sleeve for the hydraulic oil cylinder as claimed in claim 2, wherein the clamping assembly comprises a clamping rod, one end of the clamping rod is provided with a rectangular groove, a sliding block is connected between two sides of the inner wall of the rectangular groove in a sliding manner, and an arc-shaped block is fixedly connected to the top of the sliding block.

5. The guide sleeve for the hydraulic oil cylinder as claimed in claim 4, wherein the bottom of the sliding block is fixedly connected with the bottom of the inner wall of the rectangular groove through a spring, the other end of the clamping rod is welded with one end of the connecting base, and one end of the clamping rod is clamped with the clamping column.

6. The guide sleeve for the hydraulic oil cylinder as claimed in claim 1, wherein an O-shaped sealing ring is arranged on the inner wall of the connecting base, and a dustproof sealing ring is arranged on the inner wall of the connecting base and positioned on one side of the O-shaped sealing ring.

7. The guide sleeve for the hydraulic oil cylinder as claimed in claim 1, wherein a sealing plug is arranged at the top of the T-shaped groove, threads are arranged on the inner wall of the connecting base, and the piston rod is arranged inside the guide sleeve.

Technical Field

The invention relates to the field of guide sleeves for hydraulic oil cylinders, in particular to a guide sleeve for a hydraulic oil cylinder.

Background

The guide sleeve of the hydraulic cylinder plays a role in supporting and ensuring the coaxiality of the piston rod and the cylinder barrel, and in the process of extending the hydraulic cylinder rod, the hydraulic cylinder and the surface of the cylinder barrel are in contact with each other, so that the longer the stroke of the hydraulic cylinder is, the longer the guide sleeve is. Meanwhile, a support is also provided for oil sealing of the oil cylinder opening.

When the hydraulic oil cylinder works, certain friction is generated between a piston rod in the hydraulic oil cylinder and the guide sleeve when the piston rod reciprocates and stretches, the service life of the hydraulic oil cylinder is shortened due to the friction between the piston rod and the guide sleeve along with the increase of time, and meanwhile, the durability of the hydraulic oil cylinder is reduced due to heat generated by the friction between the piston rod and the guide sleeve, so that the hydraulic oil cylinder is unstable in work.

Therefore, it is necessary to provide a guide sleeve for a hydraulic cylinder to solve the above technical problems.

Disclosure of Invention

The invention provides a guide sleeve for a hydraulic oil cylinder, which solves the problem that the service life of a piston rod and the guide sleeve is reduced due to friction between the piston rod and the guide sleeve.

In order to solve the technical problem, the invention provides a guide sleeve for a hydraulic oil cylinder, which is characterized by comprising the following components:

connecting the base and the piston rod;

one end of the guide sleeve is movably clamped on the connecting base;

the cavity is arranged in the guide sleeve;

the grooves are annularly formed on the inner wall of the guide sleeve at equal intervals;

the two ends of the plurality of communicating grooves are respectively communicated with the plurality of grooves and the cavity;

the steel ball is embedded in the groove;

the T-shaped groove is formed in the top of the guide sleeve, and the bottom of the T-shaped groove is communicated with the cavity.

The arranged steel balls reduce the contact area with the piston rod, the friction force between the piston rod and the guide sleeve is reduced, the reciprocating expansion of the piston rod drives the steel balls to roll, the friction between the piston rod and the guide sleeve is further reduced, and the heat generated by the friction between the guide sleeve and the piston rod is reduced.

Preferably, the circular groove that connects the one end of base seted up with uide bushing looks adaptation, the welding of the one end of connecting the base and the outside that is located the circular groove has two joint subassemblies.

Preferably, the upper and lower both sides of uide bushing one end all symmetrical welding have the card post, set up the draw-in groove with joint subassembly looks adaptation on the card post.

Preferably, the joint subassembly includes the kelly, the rectangular channel has been seted up to the one end of kelly, sliding connection has the slider between the both sides of rectangular channel inner wall, the top fixedly connected with arc piece of slider.

Preferably, the bottom of slider is through the bottom fixed connection of spring with the rectangular channel inner wall, the other end of kelly welds with the one end of being connected the base, the one end and the card post joint of kelly.

Preferably, the inner wall of the connecting base is provided with an O-shaped sealing ring, and one side of the inner wall of the connecting base, which is positioned on the O-shaped sealing ring, is provided with a dustproof sealing ring

Preferably, a sealing plug is arranged at the top of the T-shaped groove, threads are arranged on the inner wall of the connecting base, and the piston rod is arranged inside the guide sleeve.

Compared with the prior art, the guide sleeve for the hydraulic oil cylinder has the following beneficial effects:

the invention provides a guide sleeve for a hydraulic cylinder, which is characterized in that hydraulic oil is added into a cavity and enters a communicating groove and a groove to lubricate a steel ball and a piston rod so as to reduce friction between the piston rod and the guide sleeve, meanwhile, the contact area between the guide sleeve and the piston rod is reduced through the arranged steel ball, and the steel ball is driven to rotate when the piston rod makes reciprocating telescopic motion, so that the friction between the guide sleeve and the piston rod is further reduced, the durability of the guide sleeve and the piston rod is increased, the heat generated by friction between the piston rod and the guide sleeve is reduced, the working stability of the hydraulic cylinder is ensured, and the service life of the hydraulic cylinder is prolonged.

The clamping assembly is arranged to enable the connection base and the guide sleeve to be convenient to detach, the sealing ring inside the connection base is convenient to replace, meanwhile, threads arranged on the inner wall of the connection base are in threaded connection with the end portion of the cylinder body, the supporting effect on the piston rod is increased, and the hydraulic cylinder works more stably.

Drawings

FIG. 1 is a schematic structural view of a preferred embodiment of a guide sleeve for a hydraulic cylinder according to the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is an enlarged schematic view of a portion B shown in fig. 1.

Reference numbers in the figures: 1. the connecting base, 2, the uide bushing, 3, O type sealing washer, 4, dustproof sealing washer, 5, the cavity, 6, recess, 7, the steel ball, 8, piston rod, 9, the joint subassembly, 91, the kelly, 92, rectangular channel, 93, the spring, 94, the slider, 95, arc piece, 10, circular slot, 11, the card post, 12, the draw-in groove, 13, the sealing plug, 14, T-slot, 15, the intercommunication groove.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

Referring to fig. 1, fig. 2 and fig. 3, wherein fig. 1 is a schematic structural diagram of a preferred embodiment of a guide sleeve for a hydraulic cylinder according to the present invention; FIG. 2 is an enlarged view of portion A of FIG. 1; fig. 3 is an enlarged schematic view of a portion B shown in fig. 1. The uide bushing for the hydraulic cylinder includes:

a connection base 1;

one end of the guide sleeve 2 is movably clamped on the connecting base 1;

the cavity 5 is arranged in the guide sleeve 2;

the cavity 5 is cylindrical, and hydraulic oil is filled in the cavity.

The grooves 6 are formed in the inner wall of the guide sleeve 2 in an annular mode at equal intervals;

the two ends of the communication grooves 15 are respectively communicated with the grooves 6 and the cavity 5;

the communicating groove 15 communicates the cavity 5 with the groove 6, and feeds the hydraulic oil in the cavity 5 into the groove 6.

The steel ball 7 is embedded in the groove 6;

the steel ball 7 is embedded in the groove 6 and can rotate in the groove 6.

And the T-shaped groove 14 is formed in the top of the guide sleeve 2, and the bottom of the T-shaped groove is communicated with the cavity 5.

Hydraulic oil is filled into the T-shaped groove 14, enters the groove 6 from the T-shaped groove 14, lubricates the steel ball 7, meanwhile, the piston rod 8 drives the steel ball to rotate, the hydraulic oil flows onto the piston rod 8 through a gap between the steel ball 7 and the groove 6, lubricates the piston rod 8, and meanwhile friction is reduced.

Connect the one end of base 1 seted up with circular slot 10 of uide bushing 2 looks adaptation, the welding of the one end of connecting base 1 and the outside that is located circular slot 10 has two joint subassemblies 9.

One end of the guide sleeve 2 is inserted into the circular groove 10 for clamping, and the limiting and fixing effects are achieved.

The equal symmetrical welding in upper and lower both sides of 2 one ends of uide bushing has card post 11, card post 11 is last to be seted up with the draw-in groove 12 of joint subassembly 9 looks adaptation.

The guide sleeve 2 is clamped with the clamping component 9 through the clamping column 11.

The clamping assembly 9 comprises a clamping rod 91, a rectangular groove 92 is formed in one end of the clamping rod 91, a sliding block 94 is connected between two sides of the inner wall of the rectangular groove 92 in a sliding mode, and an arc-shaped block 95 is fixedly connected to the top of the sliding block 94.

One side of arc piece 95 is the arc design, and the arc piece 95 of being convenient for gets into draw-in groove 12, carries out the joint to uide bushing 2.

The bottom of slider 94 is through the bottom fixed connection of spring 93 with rectangular channel 92 inner wall, the other end of kelly 91 and the one end welding of connecting base 1, the one end and the card post 11 joint of kelly 91.

The spring 93 serves to return the slider 94.

The inner wall of the connecting base 1 is provided with an O-shaped sealing ring 3, and one side of the inner wall of the connecting base 1, which is positioned on the O-shaped sealing ring 3, is provided with a dustproof sealing ring 4.

The O-shaped sealing ring 3 is arranged to increase the sealing performance of the connecting base 1, and the dustproof sealing ring 4 is arranged to play a dustproof role.

The top of the T-shaped groove 14 is provided with a sealing plug 13, the inner wall of the connecting base 1 is provided with threads, and the piston rod 8 is arranged inside the guide sleeve 2.

The set thread is convenient for the end part of the connecting base 1 and the oil cylinder to be in threaded connection, and the connecting base 1 plays a better supporting role for the piston rod 8.

The working principle of the guide sleeve for the hydraulic oil cylinder is as follows:

connect the base with uide bushing 2 through joint subassembly 9 joint on, will connect the end threaded connection of base 1 through internal thread and cylinder body, open sealing plug 13, add hydraulic oil from the T-slot, hydraulic oil gets into cavity 5 and stores, and hydraulic oil in the cavity 5 enters into recess 6 from intercommunication groove 15 and lubricates steel ball 7, and 8 horizontal reciprocating motion drive steel ball 7 rotations of piston rod.

Dismantle uide bushing 2 and when being connected base 1 through pressing arc piece 95, arc piece 95 extrusion slider 94 and spring 93 press into the inside of rectangular channel 92 with arc piece 95, and outside pulling uide bushing 2 simultaneously pulls out joint subassembly 9 and circular recess 10 with the one end of uide bushing 2, changes O type sealing washer 3 and dust seal 4 in connecting base 1.

Compared with the prior art, the guide sleeve for the hydraulic oil cylinder has the following beneficial effects:

through the hydraulic oil that adds in cavity 5, hydraulic oil gets into intercommunication groove 15 and recess 6, lubricate steel ball 7 and piston rod 8 and reduce the friction between piston rod and the uide bushing, the area of contact of uide bushing and piston rod 8 has been reduced through the steel ball 7 that sets up simultaneously, and when piston rod 8 was reciprocal concertina movement, drive steel ball 7 and rotate, make uide bushing 2 and piston rod 8's friction further reduce, uide bushing 2 and piston rod 8's durability has been increased, the heat that the friction produced between piston rod 8 and the uide bushing 2 reduces, guarantee the stability of pneumatic cylinder work and improved the life of pneumatic cylinder.

Make connection base 1 and the convenient to detach of uide bushing 2 through the joint subassembly 9 that sets up, conveniently change the sealing washer of connecting base 1 inside, the screw thread that sets up on the inner wall of connecting base 1 simultaneously carries out threaded connection with the tip of cylinder body, has increased the supporting role to piston rod 8, makes pneumatic cylinder work stability more.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.