阅读说明：本技术 一种防爆缸伸缩式液压缸 (Telescopic hydraulic cylinder of explosion-proof cylinder ) 是由 王若翔 于 2021-09-03 设计创作，主要内容包括：本发明提供一种防爆缸伸缩式液压缸,包括缸底,所述缸底的上侧固定安装有缸体,所述缸体的内部设置安装有一级活塞杆,所述一级活塞杆的内部设置安装有二级活塞杆,所述二级活塞杆的内部设置安装有三级活塞杆,所述三级活塞杆的顶部设置安装有安装套,所述安装套的上侧固定安装有耳环套圈。该防爆缸伸缩式液压缸,当活塞杆出现偏移现象时,基于活塞杆偏移的作用力与校正件相接触,通过校正机构实现对活塞杆的校正,进而使其完成复位恢复至正常状态,从而有效的避免了活塞杆受外界环境影响而导致其出现偏移现象,避免导致缸体内液压油外泄,进而避免了爆缸现象的发生,从而提升了该装置的防爆性能,进一步提升了该装置的安全性。(The invention provides an explosion-proof cylinder telescopic hydraulic cylinder which comprises a cylinder bottom, wherein a cylinder body is fixedly installed on the upper side of the cylinder bottom, a primary piston rod is installed inside the cylinder body, a secondary piston rod is installed inside the primary piston rod, a tertiary piston rod is installed inside the secondary piston rod, an installation sleeve is installed at the top of the tertiary piston rod, and an earring ferrule is fixedly installed on the upper side of the installation sleeve. This telescopic pneumatic cylinder of explosion-proof jar, when the skew phenomenon appears in the piston rod, effort based on the piston rod skew contacts with the correcting part, realize the correction to the piston rod through aligning gear, and then make it accomplish to reset and resume to normal condition, thereby the effectual piston rod of having avoided receives external environment influence and leads to it to appear the skew phenomenon, avoid leading to the hydraulic oil in the cylinder body to leak, and then avoided the emergence of explosion-proof jar phenomenon, thereby the explosion-proof performance of the device has been promoted, the device's security has further been promoted.)

1. The utility model provides an explosion-proof cylinder telescopic hydraulic cylinder, includes cylinder bottom (1), its characterized in that: the utility model discloses a cylinder end, including cylinder bottom (1), upside fixed mounting have cylinder body (2), the inside of cylinder body (2) sets up installs one-level piston rod (3), the inside of one-level piston rod (3) sets up installs second grade piston rod (4), the inside of second grade piston rod (4) sets up installs tertiary piston rod (5), the top of tertiary piston rod (5) sets up installs installation cover (6), the upside fixed mounting of installation cover (6) has earring lasso (7), tertiary piston rod (5) passes through set screw (8) fixed mounting with installation cover (6).

2. The explosion-proof cylinder telescopic hydraulic cylinder of claim 1, characterized in that: spacing spout (9) have all been seted up on the inner wall of cylinder body (2), one-level piston rod (3) and second grade piston rod (4), the equal fixed mounting in the outside of one-level piston rod (3), second grade piston rod (4) and tertiary piston rod (5) has stopper (10), stopper (10) pass through sliding fit installation with spacing spout (9).

3. The explosion-proof cylinder telescopic hydraulic cylinder of claim 1, characterized in that: an oil filling hole (11) is formed in the left side wall of the cylinder body (2), and oil inlet holes (12) are formed in the bottoms of the first-stage piston rod (3) and the second-stage piston rod (4).

4. The explosion-proof cylinder telescopic hydraulic cylinder of claim 1, characterized in that: the bottom of the inner wall of the cylinder body (2) is provided with an explosion-proof layer (13), and the inner wall of the explosion-proof layer (13) is provided with a carburetor (14).

5. The explosion-proof cylinder telescopic hydraulic cylinder of claim 1, characterized in that: sealing rings (15) are arranged between the cylinder body (2) and the first-stage piston rod (3), between the first-stage piston rod (3) and the second-stage piston rod (4), between the second-stage piston rod (4) and the third-stage piston rod (5).

6. The explosion-proof cylinder telescopic hydraulic cylinder of claim 1, characterized in that: the inner wall top of cylinder body (2), one-level piston rod (3) and second grade piston rod (4) all sets up installs fixed part (16), set up on the inner wall of fixed part (16) and install reset unit (17), fixedly connected with installation spring (18) between reset unit (17), the left side fixed mounting of reset unit (17) has installed piece (19).

7. An anti-explosion cylinder telescopic hydraulic cylinder according to claim 6, characterized in that: the equal movable mounting in upper and lower both sides of installed part (19) has connecting rod (20), the one end swing joint that installed part (19) was kept away from in connecting rod (20) has movable rod (21), the left end fixed mounting of movable rod (21) has correction piece (22), the contact is laminated mutually in the outside of correction piece (22) and one-level piston rod (3), second grade piston rod (4) and tertiary piston rod (5).

8. An anti-explosion cylinder telescopic hydraulic cylinder according to claim 6, characterized in that: the left side fixed mounting of installed part (19) has installation mobile jib (23), the one end fixed mounting that installed part (19) were kept away from in installation mobile jib (23) has correcting unit (24), the inside of correcting unit (24) is seted up flutedly, and sets up on the inner wall of recess and install buffering connecting rod (25), the axle head swing joint of buffering connecting rod (25) has aligning gear (26).

Technical Field

The invention belongs to the technical field of hydraulic cylinders, and particularly relates to an anti-explosion cylinder telescopic hydraulic cylinder.

Background

The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and makes linear reciprocating motion (or swinging motion), has simple structure, reliable work, no transmission clearance and stable motion, and is widely applied to hydraulic systems of various machines.

At present, the pneumatic cylinder is at the in-process of work, often because some unknown factors make inside hydraulic pressure too big, lead to gas friction to produce the spark, and then ignite the hydraulic oil of leakage, lead to the cylinder bottom to explode, and the pneumatic cylinder is at work, the piston rod can probably receive external environment influence and lead to it to appear the skew phenomenon, thereby lead to hydraulic oil in the cylinder body to leak, and when hydraulic oil leaks because the friction of piston rod can produce the spark with gas friction, thereby ignite the hydraulic oil of leakage and lead to the cylinder body to explode, and then harm field work personnel's safety, so the existence is not enough, can not satisfy staff's user demand, therefore, it is necessary to further improve.

Therefore, in view of the above, research and improvement are made for the existing structure and defects, and an explosion-proof cylinder telescopic hydraulic cylinder is provided, so as to achieve the purpose of higher practical value.

Disclosure of Invention

In order to solve the technical problems, the invention provides an explosion-proof cylinder telescopic hydraulic cylinder, which is achieved by the following specific technical means: the device comprises a cylinder bottom, a cylinder body, a primary piston rod, a secondary piston rod, a tertiary piston rod, an installation sleeve, an earring ferrule, a positioning screw, a limiting chute, a limiting block, an oil filling hole, an oil inlet hole, an explosion-proof layer, a carburetor, a sealing ring, a fixed part, a reset part, an installation spring, an installation part, a connecting rod, a movable rod, a correcting part, an installation main rod, a correcting part, a buffering connecting rod and a correcting mechanism.

The position and connection relationship among the structures are as follows:

the utility model provides an explosion-proof jar telescopic hydraulic cylinder, includes the cylinder bottom, the upside fixed mounting of cylinder bottom has the cylinder body, the inside of cylinder body sets up installs the one-level piston rod, the inside of one-level piston rod sets up installs the second grade piston rod, the inside of second grade piston rod sets up installs tertiary piston rod, the top of tertiary piston rod sets up installs the installation cover, the upside fixed mounting of installation cover has the earring lasso, tertiary piston rod passes through set screw fixed mounting with the installation cover.

Further, spacing spouts have all been seted up on the inner wall of cylinder body, one-level piston rod and second grade piston rod, the equal fixed mounting in the outside of one-level piston rod, second grade piston rod and tertiary piston rod has the stopper, stopper and spacing spout pass through sliding fit installation, realize the location of stretching out to the hydraulic stem through the mating action between stopper and the spacing spout, and then promoted the device's practicality.

Further, an oil filling hole is formed in the left side wall of the cylinder body, an oil inlet hole is formed in the bottoms of the first-level piston rod and the second-level piston rod, the oil filling hole is connected with the outside, hydraulic oil is filled into an inner cavity of the cylinder body, and then the first-level piston rod is jacked to move outwards.

Furthermore, an explosion-proof layer is arranged at the bottom of the inner wall of the cylinder body, a carburetor is arranged on the inner wall of the explosion-proof layer, the explosion-proof layer is arranged at the bottom of the cylinder body, and the carburetor is arranged on the inner wall of the explosion-proof layer, so that hydraulic oil leaking into the explosion-proof layer is absorbed by the carburetor.

Furthermore, sealing rings are arranged between the cylinder body and the first-stage piston rod, between the first-stage piston rod and the second-stage piston rod, and between the second-stage piston rod and the third-stage piston rod, and hydraulic oil in the cylinder body can be effectively prevented from leaking through the sealing rings.

Further, the inner wall top of cylinder body, one-level piston rod and second grade piston rod all sets up installs fixed part, set up on fixed part's the inner wall and install reset unit, fixedly connected with installation spring between the reset unit, reset unit's left side fixed mounting has the installed part.

Further, the equal movable mounting in upper and lower both sides of installed part has the connecting rod, the one end swing joint that the installed part was kept away from to the connecting rod has the movable rod, the left end fixed mounting of movable rod has the correcting part, the outside of correcting part and the outside of one-level piston rod, second grade piston rod and tertiary piston rod are laminated mutually and are contacted, and when the skew phenomenon appears in the piston rod, effort based on the piston rod skew contacts with the correcting part, carries out preliminary correction to it through the correcting part.

Further, the left side fixed mounting of installed part has the installation mobile jib, the one end fixed mounting that the installed part was kept away from to the installation mobile jib has correcting unit, correcting unit's inside is seted up flutedly, and sets up on the inner wall of recess and install the buffering connecting rod, the axle head swing joint of buffering connecting rod has aligning gear, utilizes aligning gear to realize the correction to the piston rod, and then makes it accomplish to reset and resume to normal condition to effectually avoided the piston rod to receive external environment influence and lead to its skew phenomenon to appear, avoided leading to hydraulic oil to leak in the cylinder body, and then avoided the emergence of the phenomenon of blowing out.

Advantageous effects

Compared with the prior art, the invention provides an explosion-proof cylinder telescopic hydraulic cylinder, which has the following beneficial effects:

1. this telescopic pneumatic cylinder of explosion-proof cylinder, when the skew phenomenon appears in the piston rod, effort based on the piston rod skew contacts with the correcting part, utilize the correcting part to drive the movable rod to inside compression, realize the correction to the piston rod through aligning gear, and then make it accomplish to reset and resume to normal state, thereby effectually avoided the piston rod to receive external environment influence and lead to it to appear the skew phenomenon, avoid leading to hydraulic oil in the cylinder body to leak, and then avoided the emergence of exploding the jar phenomenon, thereby the explosion-proof performance of the device has been promoted, the device's security has further been promoted, the security during use is higher.

2. This telescopic pneumatic cylinder of explosion-proof jar, through the explosion-proof layer that is provided with in the cylinder body bottom, simultaneously at the interior wall mounting carburetor on explosion-proof layer, utilize the carburetor to absorb the hydraulic oil that leaks to in the explosion-proof layer, fully absorb the decomposition with the hydraulic oil that leaks in the cylinder body simultaneously, avoid the pneumatic cylinder because hydraulic pressure is too big at work, lead to gas friction to produce the spark, ignite the hydraulic oil that leaks and explode to the work of this pneumatic cylinder has been guaranteed safe and reliable more.

3. This telescopic pneumatic cylinder of explosion-proof jar, through being connected the oil filler point with the external world, utilize hydraulic oil to fill into the inner chamber of cylinder body, and then jack-up one-level piston rod outwards movement, and when the one-level hydraulic stem removed, drive stopper synchronous motion, make the stopper slide in spacing spout, realize the location of stretching out to the hydraulic stem through the cooperation between stopper and the spacing spout simultaneously, and then promoted the device's practicality.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a front cross-sectional view of the present invention;

FIG. 3 is a schematic view of a portion of the present invention;

FIG. 4 is a schematic view of an earring ferrule mounting arrangement of the present invention;

FIG. 5 is an enlarged view of portion A of FIG. 2 in accordance with the present invention;

FIG. 6 is an enlarged view of portion B of FIG. 5 in accordance with the present invention;

FIG. 7 is a schematic view of the calibration component of the present invention;

FIG. 8 is a schematic view of a half-section of the cylinder body of the present invention.

In the figure: 1. a cylinder bottom; 2. a cylinder body; 3. a primary piston rod; 4. a secondary piston rod; 5. a tertiary piston rod; 6. installing a sleeve; 7. an earring ferrule; 8. a set screw; 9. a limiting chute; 10. a limiting block; 11. an oil filler hole; 12. an oil inlet hole; 13. an explosion-proof layer; 14. a carburetor; 15. a seal ring; 16. a fixing member; 17. a reset component; 18. installing a spring; 19. a mounting member; 20. a connecting rod; 21. a movable rod; 22. a correction member; 23. installing a main rod; 24. a correction member; 25. a buffer connecting rod; 26. and a correction mechanism.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and it should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present invention may be combined with each other, for convenience of description, the words "up", "down", "left" and "right" appearing hereinafter merely indicate that the words are consistent with the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.

Referring to fig. 1 to 8, an explosion-proof cylinder telescopic hydraulic cylinder comprises a cylinder bottom 1, a cylinder body 2 is fixedly mounted on the upper side of the cylinder bottom 1, a first-stage piston rod 3 is arranged inside the cylinder body 2, a second-stage piston rod 4 is arranged inside the first-stage piston rod 3, a third-stage piston rod 5 is arranged inside the second-stage piston rod 4, a mounting sleeve 6 is arranged at the top of the third-stage piston rod 5, an earring ferrule 7 is fixedly mounted on the upper side of the mounting sleeve 6, and the third-stage piston rod 5 and the mounting sleeve 6 are fixedly mounted through a positioning screw 8.

Further, spacing spout 9 has all been seted up on the inner wall of cylinder body 2, one-level piston rod 3 and second grade piston rod 4, and the equal fixed mounting in the outside of one-level piston rod 3, second grade piston rod 4 and tertiary piston rod 5 has stopper 10, and stopper 10 and spacing spout 9 pass through the sliding fit installation, realize the location of stretching out to the hydraulic stem through the mating reaction between stopper 10 and the spacing spout 9, and then promoted the device's practicality.

Further, set up oil filler point 11 on the left side wall of cylinder body 2, inlet port 12 has all been seted up with the bottom of second grade piston rod 4 to one-level piston rod 3, through being connected oil filler point 11 with the external world, utilizes hydraulic oil to fill in the inner chamber of cylinder body 2, and then jack-up one-level piston rod 3 outwards moves.

Further, an explosion-proof layer 13 is provided on the bottom of the inner wall of the cylinder 2, a carburetor 14 is provided on the inner wall of the explosion-proof layer 13, the explosion-proof layer 13 is provided on the bottom of the cylinder 2, and the carburetor 14 is provided on the inner wall of the explosion-proof layer 13, so that the carburetor 14 absorbs the hydraulic oil leaking into the explosion-proof layer 13.

Further, sealing rings 15 are arranged between the cylinder body 2 and the first-level piston rod 3, between the first-level piston rod 3 and the second-level piston rod 4, and between the second-level piston rod 4 and the third-level piston rod 5, and hydraulic oil inside the cylinder body 2 can be effectively prevented from leaking out through the sealing rings 15.

Further, the inner wall tops of the cylinder body 2, the one-level piston rod 3 and the second-level piston rod 4 are provided with fixing parts 16, the inner wall of each fixing part 16 is provided with a resetting part 17, a mounting spring 18 is fixedly connected between the resetting parts 17, and the left side of each resetting part 17 is fixedly provided with a mounting part 19.

Further, the equal movable mounting in upper and lower both sides of installed part 19 has connecting rod 20, the one end swing joint that installed part 19 was kept away from to connecting rod 20 has movable rod 21, the left end fixed mounting of movable rod 21 has correcting element 22, correcting element 22's the outside and one-level piston rod 3, the contact is laminated mutually in the outside of second grade piston rod 4 and tertiary piston rod 5, when the skew phenomenon appears in the piston rod, effort based on the piston rod skew contacts with correcting element 22, carry out preliminary correction to it through correcting element 22.

Further, the left side fixed mounting of installed part 19 has installation mobile jib 23, the one end fixed mounting that installation mobile jib 23 kept away from installed part 19 has correcting unit 24, correcting unit 24's inside is seted up flutedly, and set up on the inner wall of recess and install buffering connecting rod 25, the axle head swing joint of buffering connecting rod 25 has aligning gear 26, utilize aligning gear 26 to realize the correction to the piston rod, and then make it accomplish to reset and resume to normal condition, thereby effectually avoided the piston rod to receive external environment influence and lead to its skew phenomenon to appear, avoid leading to hydraulic oil in the cylinder body 2 to leak, and then avoided the emergence of the knock phenomenon.

The specific use mode and function of the embodiment are as follows:

the working principle is as follows: when the explosion-proof cylinder telescopic hydraulic cylinder is used, at present, in the working process of the hydraulic cylinder, the oil injection hole 11 is connected with the outside, hydraulic oil is filled into the inner cavity of the cylinder body 2, the primary piston rod 3 is jacked to move outwards, the primary hydraulic rod is driven to synchronously move while moving, the limiting block 10 is driven to slide in the limiting chute 9, meanwhile, the extending and positioning of the hydraulic rod are realized through the matching effect between the limiting block 10 and the limiting chute 9, and further the practicability of the device is improved;

in addition, the internal hydraulic pressure is often caused to be too large due to some unknown factors, so that the hydraulic oil in the cylinder body overflows, the anti-explosion layer 13 is arranged at the bottom of the cylinder body 2, the carburetor 14 is arranged on the inner wall of the anti-explosion layer 13, the hydraulic oil leaked into the anti-explosion layer 13 is absorbed by the carburetor 14, and the hydraulic oil leaked in the cylinder body 2 is fully absorbed and decomposed, so that the phenomenon that sparks are generated due to gas friction and the leaked hydraulic oil is ignited to explode due to the fact that the hydraulic pressure is too large in the working process of the hydraulic cylinder is avoided, and the hydraulic cylinder is guaranteed to work more safely and reliably;

when the hydraulic cylinder works, the piston rod is possibly influenced by the external environment to cause the deflection phenomenon, so that hydraulic oil in the cylinder body 2 leaks, when the piston rod deflects, acting force based on the deflection of the piston rod is contacted with the correcting piece 22, the correcting piece 22 is used for primarily correcting the piston rod, when the acting force of the deflection is overlarge, the correcting piece 22 is used for driving the movable rod 21 to compress inwards, the mounting piece 19 is driven to pull the mounting spring 18 to move outwards through transmission between the connecting rods 20, the mounting main rod 23 is used for driving the correcting piece 24 to be contacted with the piston rod, the correcting mechanism 26 is used for correcting the piston rod, so that the piston rod is reset and restored to a normal state, the deflection phenomenon caused by the influence of the external environment on the piston rod is effectively avoided, the hydraulic oil in the cylinder body 2 is prevented from leaking, and the occurrence of a cylinder explosion phenomenon is avoided, thereby the explosion-proof performance of the device has been promoted, the security of the device has further been promoted, and the security during the use is higher.

The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.