CN211039227U

CN211039227U - Long-stroke hydraulic cylinder

Info

Publication number: CN211039227U
Application number: CN201922016851.6U
Authority: CN
Inventors: 李钢; 鲁海石; 陈素娟; 宛锐
Original assignee: FUSHUN TIANBAO HEAVY INDUSTRY HYDRAULIC MANUFACTURING CO LTD
Current assignee: FUSHUN TIANBAO HEAVY INDUSTRY HYDRAULIC MANUFACTURING CO LTD
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-07-17
Anticipated expiration: 2029-11-21

Abstract

The utility model discloses a long stroke pneumatic cylinder, including cylinder body and piston, the inside piston that is provided with of cylinder body. Has the advantages that: the utility model discloses an outer pole, first supporting wheel, the handle bolt, kicking block and movable block, first supporting wheel is from four direction butt piston rods of piston rod, supporting piston rod between piston and end cover, the strong point has been increased, the phenomenon that the piston rod takes place to rock has been avoided, in-process that the piston rod removed, first supporting wheel rotates, traditional guide bar has been cancelled simultaneously, the friction between guide bar and the piston rod has been reduced, make the piston rod motion more nimble, the availability factor of this device has been improved, when first supporting wheel uses the production wearing and tearing for a long time, staff's accessible rotates the inside kicking block that promotes of handle bolt, kicking block top moves the movable block and extrudees first supporting wheel, thereby adjust the centre gripping dynamics between first supporting wheel and the piston rod, make first supporting wheel tight piston rod all the time, guarantee the stability that the piston rod removed.

Description

Long-stroke hydraulic cylinder

Technical Field

The utility model relates to a pneumatic cylinder technical field particularly, relates to a long stroke pneumatic cylinder.

Background

The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and makes linear reciprocating motion, has simple structure and reliable work, can omit a speed reducer when realizing reciprocating motion, has no transmission clearance and moves stably, thereby being widely applied to hydraulic systems of various machines.

The long stroke pneumatic cylinder commonly used, because of its piston rod length overlength, produce the phenomenon of rocking easily, when long stroke pneumatic cylinder horizontal installation, the piston rod of overlength also probably appears the sunken phenomenon of tip, comparatively influence the use, and simultaneously, traditional pneumatic cylinder is inside to adopt the guide bar to lead for the piston rod, produce the friction between piston rod and the guide bar, thereby influence piston rod moving efficiency, and simultaneously, the piston of traditional pneumatic cylinder inside passes through piston seal circle and cylinder body seal, if during cylinder body horizontal installation, the piston is because gravity reason eccentric extrusion piston seal circle, long-time eccentric extrusion can lead to piston seal circle eccentric deformation to appear, thereby produce the phenomenon of leaking, and then influence life.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims at providing: a long-stroke hydraulic cylinder has the advantages of stable piston rod movement, high piston rod movement efficiency and long service life, and further solves the problems in the prior art.

(II) technical scheme

The technical scheme of the utility model:

The utility model provides a long stroke pneumatic cylinder, includes cylinder body and piston, the inside piston that is provided with of cylinder body, and cylinder body one end fixedly connected with end cover to piston side surface central point puts fixedly connected with piston rod, the piston rod other end runs through the end cover and extends to the end cover outside, and is provided with the sealing member between piston rod and the end cover, end cover one side is located the cylinder body surface and runs through sealing connection and has the urceolus, and the outer terminal surface central point of urceolus puts and runs through threaded connection and have a handle bolt to handle bolt one end is located the inside fixedly connected with kicking block of urceolus, the kicking block below is located the inside sliding connection of urceolus and the interior pole of moving block bottom surface central point fixedly connected with to interior pole.

Furthermore, a second supporting wheel is fixedly mounted on the surface of the outer edge of the piston and is abutted against the inner wall of the cylinder body.

Furthermore, the surface of the first supporting wheel is of an arc-shaped structure, and the radian of the surface of the first supporting wheel is the same as that of the piston rod.

Furthermore, the piston rod is a solid metal rod.

Furthermore, the ejector block is made of rubber, and the diameter of the ejector block is slightly larger than the inner diameter of the outer barrel.

Further, the diameter of the moving block is equal to the inner diameter of the outer cylinder.

(III) advantageous effects

Compared with the prior art, the utility model provides a long stroke pneumatic cylinder possesses following beneficial effect:

(1) The utility model adopts the outer rod, the first supporting wheel, the handle bolt, the top block and the moving block, when the piston rod normally works, the first supporting wheel is abutted against the piston rod from four directions of the piston rod, the piston rod is supported between the piston and the end cover, supporting points are increased, the phenomenon that the piston rod shakes is avoided, in the moving process of the piston rod, the first supporting wheel rotates, and simultaneously, the traditional guide rod is eliminated, so that the friction between the guide rod and the piston rod is reduced, the piston rod moves more flexibly, the use efficiency of the device is improved, when the first supporting wheel is worn after long-term use, a worker can push the jacking block inwards by rotating the handle bolt, the jacking block pushes the moving block to extrude the first supporting wheel, thereby the clamping force between first supporting wheel and the piston rod is adjusted, makes first supporting wheel support the piston rod tightly all the time, guarantees the stability that the piston rod removed.

(2) The utility model discloses a second supporting wheel, second supporting wheel distribute at piston edge surface, and second supporting wheel rotation portion butt cylinder body, second supporting wheel supporting piston prevents to avoid the long-time eccentric extrusion piston seal of piston to avoid piston seal to appear eccentric deformation, thereby prolong piston seal's life, and then improved the whole life of this device.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a long-stroke hydraulic cylinder provided by the present invention;

Fig. 2 is a front view of a long stroke hydraulic cylinder according to the present invention;

Fig. 3 is a B-B sectional view of a long-stroke hydraulic cylinder according to the present invention;

3 fig. 3 4 3 is 3 a 3 sectional 3 view 3 of 3 a 3 long 3- 3 stroke 3 hydraulic 3 cylinder 3 according 3 to 3 the 3 present 3 invention 3. 3

In the figure:

1. A cylinder body; 2. a piston; 3. a piston rod; 4. a seal member; 5. an end cap; 6. an outer cylinder; 7. a handle bolt; 8. a top block; 9. a moving block; 10. an inner rod; 11. a first support wheel; 12. a second support wheel.

Detailed Description

For further explanation of the embodiments, the drawings are provided as part of the disclosure and serve primarily to illustrate the embodiments and, together with the description, to explain the principles of operation of the embodiments, and to provide further explanation of the invention and advantages thereof, it will be understood by those skilled in the art that various other embodiments and advantages of the invention are possible, and that elements in the drawings are not to scale and that like reference numerals are generally used to designate like elements.

According to the utility model discloses an embodiment provides a long stroke pneumatic cylinder.

Referring now to the drawings and the detailed description, as shown in fig. 1-4, a long-stroke hydraulic cylinder according to an embodiment of the present invention includes a cylinder body 1 and a piston 2, the piston 2 is disposed inside the cylinder body 1, an end cap 5 is fixedly connected to one end of the cylinder body 1, a piston rod 3 is fixedly connected to a central position of a side surface of the piston 2, the other end of the piston rod 3 penetrates the end cap 5 and extends to the outside of the end cap 5, a sealing member 4 is disposed between the piston rod 3 and the end cap 5, which is a common hydraulic cylinder structure and not described herein in any greater detail, an outer cylinder 6 is sealingly connected to a surface of the cylinder body 1 on one side of the end cap 5, a handle bolt 7 is threadedly connected to a central position of an outer end surface of the outer cylinder 6, an ejector block 8 is fixedly connected to an end of the handle bolt 7, a moving block 9 is slidably connected inside the outer cylinder 6 below the top block 8, an inner rod 10 is fixedly connected to the center position of the bottom surface of the moving block 9, a first supporting wheel 11 is installed on the bottom surface of the inner rod 10, the first supporting wheel 11 is abutted to the surface of the piston rod 3, when the piston rod 3 normally works, the first supporting wheel 11 is abutted to the piston rod 3 from four directions of the piston rod 3, the piston rod 3 is supported between the piston 2 and the end cover 5, a supporting point is increased, the phenomenon that the piston rod 3 shakes is avoided, in the moving process of the piston rod 3, the first supporting wheel 11 rotates, meanwhile, a traditional guide rod is cancelled, friction between the guide rod and the piston rod 3 is reduced, the piston rod 3 can move more flexibly, the use efficiency of the device is improved, when the first supporting wheel 11 is worn due to long-time use, a worker can push the top block 8 inwards by rotating the handle, the ejector block 8 ejects the movable block 9 to extrude the first supporting wheel 11, so that the clamping force between the first supporting wheel 11 and the piston rod 3 is adjusted, the first supporting wheel 11 always abuts against the piston rod 3, and the moving stability of the piston rod 3 is ensured.

In one embodiment, the outer edge surface of the piston 2 is fixedly provided with a second supporting wheel 12, the second supporting wheel 12 is abutted against the inner wall of the cylinder body 1, the second supporting wheel 12 is provided with a plurality of supporting wheels 12, the second supporting wheel 12 is arranged at equal angles with respect to the circle center of the piston 2, the second supporting wheel 12 is arranged between the piston sealing rings, the second supporting wheel 12 supports the piston 2, the piston sealing rings are prevented from being eccentrically extruded for a long time, the eccentric deformation of the piston sealing rings is avoided, the service life of the piston sealing rings is prolonged, and the whole service life of the device is prolonged.

In one embodiment, the surface of the first supporting wheel 11 is of an arc structure, and the radian of the surface of the first supporting wheel 11 is the same as that of the piston rod 3, so that the first supporting wheel 11 of the arc surface increases the contact area with the piston rod 3 and can clamp the piston rod 3, the butt joint of the first supporting wheel 11 is more stable, and the slipping phenomenon is avoided.

In one embodiment, the piston rod 3 is made of a solid metal rod piece, so that the deformation is small, and the piston rod is more firm and durable.

In one embodiment, the top block 8 is made of rubber, the diameter of the top block 8 is slightly larger than the inner diameter of the outer cylinder 6, and after the top block 8 is plugged into the outer cylinder 6, the top block deforms due to the elasticity of the top block, so that a gap between the top block and the inner wall of the outer cylinder 6 is sealed, and the sealing effect is achieved.

In one embodiment, the diameter of the moving block 9 is equal to the inner diameter of the outer cylinder 6, so that the first supporting wheel 11 is prevented from shaking due to shaking of the moving block 9, and the stability of clamping support is improved.

The working principle is as follows:

When the piston rod 3 normally works, the first supporting wheel 11 is abutted against the piston rod 3 from four directions of the piston rod 3, the piston rod 3 is supported between the piston 2 and the end cover 5, a supporting point is increased, the phenomenon that the piston rod 3 shakes is avoided, in the moving process of the piston rod 3, the first supporting wheel 11 rotates, meanwhile, a traditional guide rod is eliminated, the friction between the guide rod and the piston rod 3 is reduced, the piston rod 3 moves more flexibly, the use efficiency of the device is improved, when the first supporting wheel 11 is worn after being used for a long time, a worker can push the top block 8 inwards by rotating the handle bolt 7, the top block 8 pushes the moving block 9 to extrude the first supporting wheel 11, so that the clamping force between the first supporting wheel 11 and the piston rod 3 is adjusted, the first supporting wheel 11 is always abutted against the piston rod 3, the moving stability of the piston rod 3 is ensured, and simultaneously, the second supporting wheel 12 supports the piston 2, so that the piston 2 is prevented from being eccentrically extruded for a long time, the eccentric deformation of the piston sealing ring is avoided, the service life of the piston sealing ring is prolonged, and the whole service life of the device is prolonged.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The long-stroke hydraulic cylinder is characterized by comprising a cylinder body (1) and a piston (2), wherein the piston (2) is arranged in the cylinder body (1), an end cover (5) is fixedly connected to one end of the cylinder body (1), a piston rod (3) is fixedly connected to the central position of the surface of one side of the piston (2), the other end of the piston rod (3) penetrates through the end cover (5) and extends to the outer side of the end cover (5), a sealing element (4) is arranged between the piston rod (3) and the end cover (5), an outer cylinder (6) is connected to one side of the end cover (5) on the surface of the cylinder body (1) in a penetrating and sealing mode, a handle bolt (7) is connected to the central position of the outer end face of the outer cylinder (6) in a penetrating and threaded mode, a jacking block (8) is fixedly connected to the inner portion of the outer cylinder (6) at, an inner rod (10) is fixedly connected to the center of the bottom surface of the moving block (9), a first supporting wheel (11) is installed on the bottom surface of the inner rod (10), and the first supporting wheel (11) is abutted to the surface of the piston rod (3).

2. A long stroke hydraulic cylinder according to claim 1, wherein the outer peripheral surface of the piston (2) is fixedly provided with a second support wheel (12), and the second support wheel (12) abuts against the inner wall of the cylinder body (1).

3. A long stroke hydraulic cylinder according to claim 1, wherein the first support wheel (11) surface is of arcuate configuration and the arc of the first support wheel (11) surface is the same as the arc of the piston rod (3).

4. A long stroke hydraulic cylinder according to claim 1, wherein the piston rod (3) is a solid metal rod.

5. A long stroke hydraulic cylinder according to claim 1, wherein the top block (8) is made of rubber, and the diameter of the top block (8) is slightly larger than the inner diameter of the outer cylinder (6).

6. A long stroke hydraulic cylinder according to claim 1, wherein the diameter of the moving block (9) is equal to the inner diameter of the outer cylinder (6).