CN214661196U

CN214661196U - Hydraulic cylinder with explosion-proof function

Info

Publication number: CN214661196U
Application number: CN202022420959.4U
Authority: CN
Inventors: 姚佳乐
Original assignee: Quanzhou Junde Machinery Co ltd
Current assignee: Quanzhou Junde Machinery Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-11-09
Anticipated expiration: 2030-10-27

Abstract

The utility model discloses a pneumatic cylinder with explosion-proof function relates to pneumatic cylinder technical field. The utility model discloses a cylinder body, first slider and first piston, cylinder body one end is fixed with first installation piece, the fixed intercommunication in cylinder body week side has first drum, first drum internal fixation has a spacing piece, a plurality of first oil leakage grooves have been seted up to first drum one end, be equipped with the piston rod in the cylinder body, cylinder body one end is equipped with sealed lid, be equipped with pressure relief mechanism in the first drum, sealed lid includes second installation piece, second drum and block rubber, pressure relief mechanism includes the second slider, a spring, the third drum, the second piston, first dog, the oil leakage groove is leaked to the second, second dog and third oil leakage groove. The utility model discloses a pressure release mechanism's setting for when the pressure that hydraulic oil received surpassed the hydro-cylinder and bear the scope, the pressure that can effectual reduction hydraulic oil received has solved current hydraulic oil pressure and has surpassed the hydro-cylinder and bear the scope and the problem that explodes.

Description

Hydraulic cylinder with explosion-proof function

Technical Field

The utility model belongs to the technical field of the pneumatic cylinder, especially, relate to a pneumatic cylinder with explosion-proof function.

Background

The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and does linear reciprocating motion (or swinging 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 various mechanical hydraulic systems, and the output force of the hydraulic cylinder is in direct proportion to the effective area of a piston and the pressure difference between the two sides of the piston; the hydraulic cylinder basically comprises a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffering device and an exhaust device, wherein the buffering device and the exhaust device are determined according to specific application occasions, other devices are indispensable, three reasons of oil cylinder burst are included, firstly, the hydraulic oil pressure exceeds the oil cylinder bearing range, secondly, the hydraulic oil cylinder has slight defects in manufacturing, the hydraulic oil cylinder cannot bear high pressure or is used under the condition of high load for a long time, thirdly, the buffering device in the hydraulic oil cylinder is damaged, the former can be solved through design, and the latter only needs to replace the damaged or defective parts.

Therefore, the utility model designs a pneumatic cylinder with explosion-proof function to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pneumatic cylinder with explosion-proof function, through the setting of pressure release mechanism for when the pressure that hydraulic oil received surpassed the hydro-cylinder and bear the scope, the pressure that can effectual reduction hydraulic oil received has solved current hydraulic oil pressure and has surpassed the hydro-cylinder and bear the scope and the problem that explodes.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a hydraulic cylinder with explosion-proof function, which comprises a cylinder body, wherein one end of the cylinder body is fixed with a first installation block, the peripheral side surface of the cylinder body is fixedly communicated with a first cylinder, a limit block is fixed in the first cylinder, one end of the first cylinder is provided with a plurality of first oil leakage grooves, a piston rod is arranged in the cylinder body, one end of the cylinder body is provided with a sealing cover, and a pressure relief mechanism is arranged in the first cylinder;

a first sliding block is fixed at one end of the piston rod, is positioned in the cylinder body and is in clearance fit with the inner wall of the cylinder body, and a first piston is fixed at one end of the first sliding block through a screw;

the sealing cover comprises a second mounting block, a second cylinder is fixed on one side of the second mounting block, a rubber block is fixed at one end of the second cylinder through a screw, the other end of the piston rod sequentially penetrates through the rubber block, the second cylinder and the second mounting block and extends outwards, the piston rod is in clearance fit with the second mounting block, the second cylinder and the rubber block respectively, and the first mounting block and the second mounting block are fixed through bolts;

the pressure relief mechanism comprises a second sliding block, a spring and a third cylinder, one end of the second sliding block is positioned in the first cylinder, a second piston is fixed at one end of the second sliding block, the second piston is attached to the inner wall of the first cylinder and attached to the limiting block, a first stop block is fixed on the peripheral side surface of the second slide block and is jointed with one end of the first cylinder, a plurality of second oil leakage grooves are arranged on one surface of the first stop block, a second stop block is fixed at the bottom end of the third cylinder, a plurality of third oil leakage grooves are formed in one surface of the second stop block, the other end of the second slide block penetrates through the second stop block and extends outwards, the second sliding block is in sliding fit with the second stop block, the third cylinder is in threaded connection with the first cylinder, the spring sleeve is arranged on the circumferential side face of the second sliding block, one end of the spring is attached to the first stop block, and the other end of the spring is attached to the second stop block.

Further, a fixed block is fixed on an inner wall of the cylinder body, and the fixed block, the first piston and the rubber block are all located on the same axis.

Further, two first holding tanks have been seted up to first slider week side, be equipped with first sealing washer in the first holding tank, first sealing washer and first piston laminate with the cylinder body inner wall respectively each other.

Furthermore, two second holding tanks have been seted up to second drum week side, be equipped with the second sealing washer in the second holding tank, the second sealing washer laminates with the cylinder body inner wall each other, two third holding tanks have been seted up in the second drum, be equipped with the third sealing washer in the third holding tank, third sealing washer and piston rod sliding fit.

Furthermore, the periphery of the second cylinder is sleeved with a sealing gasket, and the sealing gasket is attached to the first mounting block and the second mounting block.

Furthermore, the peripheral side surface of the first cylinder is provided with threads, the inner side surface of the third cylinder is provided with threads matched with the first cylinder, and the peripheral side surface of the third cylinder is fixed with a hexagonal prism.

The utility model discloses following beneficial effect has: the utility model discloses a pressure release mechanism's setting, when hydraulic oil pressure is close the hydro-cylinder and bears the scope, the pressure that the spring received is great for the shrink volume grow of spring, the sliding distance of second piston in first drum this moment is longer, the second piston is kept away from first drum outer end one surface and is less than the degree of depth of first oil leakage groove to the distance of first drum outer end, at this moment, hydraulic oil can flow from first oil leakage groove, thereby reduce hydraulic oil pressure and prevent the pneumatic cylinder explosion, and then the security that has improved the pneumatic cylinder.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

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

FIG. 1 is a schematic structural diagram of a hydraulic cylinder with an explosion-proof function;

FIG. 2 is a schematic structural view of the cylinder;

FIG. 3 is a schematic view of the structure of FIG. 2 from another angle;

FIG. 4 is a schematic view of the sealing cap;

FIG. 5 is a schematic view of the structure of FIG. 4 from another angle;

FIG. 6 is a schematic structural view of a pressure relief mechanism;

FIG. 7 is a schematic view of the structure of FIG. 6 from another angle;

FIG. 8 is a schematic view of the piston rod;

FIG. 9 is an enlarged view of part A;

in the drawings, the components represented by the respective reference numerals are listed below:

1-cylinder, 101-first mounting block, 102-first cylinder, 103-fixing block, 104-limiting block, 105-first oil leakage groove, 2-piston rod, 201-first sliding block, 202-first sealing ring, 203-first piston, 3-sealing cover, 301-second mounting block, 302-second cylinder, 303-sealing gasket, 304-second sealing ring, 305-rubber block, 306-third sealing ring, 4-pressure relief mechanism, 401-second sliding block, 402-second piston, 403-first block, 404-second oil leakage groove, 405-spring, 406-third cylinder, 407-hexagonal prism, 408-second block, 409-third oil leakage groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-9, the present invention relates to a hydraulic cylinder with explosion-proof function, which comprises a cylinder body 1, wherein a first mounting block 101 is fixed at one end of the cylinder body 1, a first cylinder 102 is fixedly communicated with the circumferential side of the cylinder body 1, a limiting block 104 is fixed in the first cylinder 102, a plurality of first oil leakage grooves 105 are formed at one end of the first cylinder 102, a piston rod 2 is arranged in the cylinder body 1, a sealing cover 3 is arranged at one end of the cylinder body 1, and a pressure relief mechanism 4 is arranged in the first cylinder 102;

a first sliding block 201 is fixed at one end of the piston rod 2, the first sliding block 201 is positioned in the cylinder body 1 and is in clearance fit with the inner wall of the cylinder body 1, and a first piston 203 is fixed at one end of the first sliding block 201 through a screw;

the sealing cover 3 comprises a second mounting block 301, a second cylinder 302 is fixed on one side of the second mounting block 301, a rubber block 305 is fixed at one end of the second cylinder 302 through a screw, the other end of the piston rod 2 sequentially penetrates through the rubber block 305, the second cylinder 302 and the second mounting block 301 and extends outwards, the piston rod 2 is in clearance fit with the second mounting block 301, the second cylinder 302 and the rubber block 305 respectively, and the first mounting block 101 and the second mounting block 301 are fixed through bolts;

the pressure relief mechanism 4 comprises a second slider 401, the spring 405 and the third cylinder 406, one end of the second slider 401 is located in the first cylinder 102, one end of the second slider 401 is fixed with the second piston 402, the second piston 402 is attached to the inner wall of the first cylinder 102 and attached to the limiting block 104, the peripheral side surface of the second slider 401 is fixed with the first stop 403, the first stop 403 is attached to one end of the first cylinder 102, a plurality of second oil leakage grooves 404 are formed in one surface of the first stop 403, the bottom end of the third cylinder 406 is fixed with the second stop 408, a plurality of third oil leakage grooves 409 are formed in one surface of the second stop 408, the other end of the second slider 401 penetrates through the second stop 408 and extends outwards, the second slider 401 is in sliding fit with the second stop 408, the third cylinder 406 is in threaded connection with the first cylinder 102, the spring 405 is sleeved on the peripheral side surface of the second slider 401, one end of the spring 405 is attached to the first stop 403, and the other end of the spring 405 is attached to the second stop 408.

As shown in fig. 3, 4 and 8, a fixed block 103 is fixed on an inner wall of the cylinder 1, and the fixed block 103, the first piston 203 and the rubber block 305 are all located on the same axis.

As shown in fig. 1 and 8, two first receiving grooves are formed in the circumferential side surface of the first slider 201, a first sealing ring 202 is arranged in the first receiving grooves, and the first sealing ring 202 and the first piston 203 are respectively attached to the inner wall of the cylinder body 1, so that the interior of the cylinder body 1 is divided into two chambers and the two chambers are isolated from each other.

As shown in fig. 1, 4 and 5, two second receiving grooves are formed in the circumferential side surface of the second cylinder 302, a second sealing ring 304 is arranged in the second receiving groove, the second sealing ring 304 is attached to the inner wall of the cylinder body 1, two third receiving grooves are formed in the second cylinder 302, a third sealing ring 306 is arranged in the third receiving groove, and the third sealing ring 306 is in sliding fit with the piston rod 2, so that the piston rod 2 can slide in the second cylinder 302 conveniently, and meanwhile, the inside of the cylinder body 1 is isolated from the outside.

As shown in fig. 1 and 4, a sealing gasket 303 is sleeved on the peripheral side surface of the second cylinder 302, and the sealing gasket 303 is attached to the first mounting block 101 and the second mounting block 301, so as to increase air tightness.

As shown in fig. 1 and 6, the first cylinder 102 has threads on the peripheral side, the third cylinder 406 has threads adapted to the first cylinder 102 on the inner side, and the hexagonal prism 407 is fixed on the peripheral side of the third cylinder 406, which facilitates the installation and detachment of the pressure relief mechanism.

One specific application of this embodiment is: when the hydraulic cylinder normally works, the pressure borne by the spring 405 is small, so that the contraction amount of the spring 405 is small, the sliding distance of the second piston 402 in the first cylinder 102 is short, the distance from the surface of the second piston 402, which is far away from the outer end of the first cylinder 102, to the outer end of the first cylinder 102 is larger than the depth of the first oil leakage groove 105, hydraulic oil cannot flow out from the first oil leakage groove 105, when the hydraulic oil pressure is close to the bearing range of the hydraulic cylinder, the pressure borne by the spring 405 is large, the contraction amount of the spring 405 is large, the sliding distance of the second piston 402 in the first cylinder 102 is long, the distance from the surface of the second piston 402, which is far away from the outer end of the first cylinder 102, to the outer end of the first cylinder 102 is smaller than the depth of the first oil leakage groove 105, at the time, the hydraulic oil can flow out from the first oil leakage groove 105, and accordingly the hydraulic oil pressure is reduced to prevent the hydraulic cylinder from exploding.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a pneumatic cylinder with explosion-proof function which characterized in that: the oil cylinder comprises a cylinder body (1), wherein a first mounting block (101) is fixed at one end of the cylinder body (1), a first cylinder (102) is fixedly communicated with the peripheral side surface of the cylinder body (1), a limiting block (104) is fixed in the first cylinder (102), a plurality of first oil leakage grooves (105) are formed in one end of the first cylinder (102), a piston rod (2) is arranged in the cylinder body (1), a sealing cover (3) is arranged at one end of the cylinder body (1), and a pressure relief mechanism (4) is arranged in the first cylinder (102);

a first sliding block (201) is fixed at one end of the piston rod (2), the first sliding block (201) is located in the cylinder body (1) and is in clearance fit with the inner wall of the cylinder body (1), and a first piston (203) is fixed at one end of the first sliding block (201) through a screw;

the sealing cover (3) comprises a second mounting block (301), a second cylinder (302) is fixed on one side of the second mounting block (301), a rubber block (305) is fixed at one end of the second cylinder (302) through a screw, the other end of the piston rod (2) penetrates through the rubber block (305), the second cylinder (302) and the second mounting block (301) in sequence and extends outwards, the piston rod (2) is in clearance fit with the second mounting block (301), the second cylinder (302) and the rubber block (305) respectively, and the first mounting block (101) and the second mounting block (301) are fixed through bolts;

the pressure relief mechanism (4) comprises a second slider (401), a spring (405) and a third cylinder (406), one end of the second slider (401) is located in the first cylinder (102), one end of the second slider (401) is fixed with a second piston (402), the second piston (402) is attached to the inner wall of the first cylinder (102) and attached to a limiting block (104), a first stop block (403) is fixed to the peripheral side surface of the second slider (401), the first stop block (403) is attached to one end of the first cylinder (102), a plurality of second oil leakage grooves (404) are formed in one surface of the first stop block (403), a second stop block (408) is fixed to the bottom end of the third cylinder (406), a plurality of third oil leakage grooves (409) are formed in one surface of the second stop block (408), the other end of the second slider (401) penetrates through the second stop block (408) and extends outwards, and the second slider (401) is in sliding fit with the second stop block (408), the third cylinder (406) is in threaded connection with the first cylinder (102), the spring (405) is sleeved on the peripheral side face of the second sliding block (401), one end of the spring (405) is attached to the first stop block (403), and the other end of the spring (405) is attached to the second stop block (408).

2. Hydraulic cylinder with explosion-proof function according to claim 1, characterized in that a fixed block (103) is fixed to an inner wall of the cylinder body (1), and the fixed block (103), the first piston (203) and the rubber block (305) are all located on the same axis.

3. The hydraulic cylinder with the explosion-proof function according to claim 1, wherein two first accommodating grooves are formed on the peripheral side surface of the first sliding block (201), a first sealing ring (202) is arranged in the first accommodating grooves, and the first sealing ring (202) and the first piston (203) are respectively attached to the inner wall of the cylinder body (1).

4. The hydraulic cylinder with the explosion-proof function according to claim 1, wherein two second accommodating grooves are formed in the peripheral side surface of the second cylinder (302), a second sealing ring (304) is arranged in each second accommodating groove, the second sealing ring (304) is attached to the inner wall of the cylinder body (1), two third accommodating grooves are formed in the second cylinder (302), a third sealing ring (306) is arranged in each third accommodating groove, and the third sealing ring (306) is in sliding fit with the piston rod (2).

5. The hydraulic cylinder with the explosion-proof function as recited in claim 1, wherein a sealing gasket (303) is sleeved on the peripheral side surface of the second cylinder (302), and the sealing gasket (303) is attached to the first mounting block (101) and the second mounting block (301).

6. The hydraulic cylinder with the explosion-proof function according to claim 1, wherein a thread is formed on the peripheral side surface of the first cylinder (102), a thread adapted to the first cylinder (102) is formed on the inner side surface of the third cylinder (406), and a hexagonal prism (407) is fixed on the peripheral side surface of the third cylinder (406).