CN218347687U

CN218347687U - Hydraulic cylinder with safety structure

Info

Publication number: CN218347687U
Application number: CN202222751150.9U
Authority: CN
Inventors: 何晓俊
Original assignee: Shanghai Dongji Hydrauli Engineering Co ltd
Current assignee: Shanghai Dongji Hydrauli Engineering Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-01-20
Anticipated expiration: 2032-10-19

Abstract

The utility model discloses a pneumatic cylinder with insurance structure, include: the base, for the base part of this pneumatic cylinder, the upper end of base is equipped with the cylinder body, the cylinder body upper end is equipped with the closing cap, the inside slip of closing cap is provided with the piston rod, the piston rod extends to the inboard of base, one side of base is equipped with even lower extreme linker, one side of cylinder body is equipped with the upper end linker, the upper end linker with be connected with the intercommunication device between the lower extreme linker, this pneumatic cylinder with insurance function can pass through the safety mechanism who self carries, when hydraulic drive device breaks down, when unable normal operation, the inside break-make that carries on of control pneumatic cylinder to make the pneumatic cylinder can the gentle activity, avoid the pneumatic cylinder card to die and hydraulic oil reveals the unnecessary loss that causes, and can lock the pneumatic cylinder under the condition of unable drive pneumatic cylinder and die fixedly, thereby solve current problem.

Description

Hydraulic cylinder with safety structure

Technical Field

The utility model relates to a hydraulic drive technical field specifically is a pneumatic cylinder with insurance structure.

Background

The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and does linear reciprocating motion (or swinging motion), the hydraulic cylinder is simple in structure and reliable in work, and has great driving force, a speed reduction device can be omitted when the hydraulic cylinder performs reciprocating motion, and the hydraulic cylinder also has the working characteristic of gentle motion, so that the hydraulic cylinder is widely applied to various mechanical equipment and becomes a main driving element of the reciprocating motion in heavy mechanical equipment.

As in application No. 201820015021.4; the utility model discloses a auto-lock insurance pneumatic cylinder, comprising a hydraulic cylinder, pneumatic cylinder both ends symmetry is equipped with the installation piece, the pneumatic cylinder left end is equipped with the safety cover, and the safety cover is located the left side of installation piece, be equipped with the telescopic link in the pneumatic cylinder, and telescopic link one end runs through the safety cover and extend the safety cover outside, the symmetry is seted up flutedly on the safety cover, be equipped with in the recess and support the piece, the symmetry is equipped with the draw-in groove on the telescopic link, and supports the one end and the draw-in groove block that the recess was kept away from to the piece, the level is equipped with the mounting panel in the recess, the mounting panel lower extreme is equipped with the gag lever post, it is located the spout to be equipped with spout and the gag lever post lower extreme in the piece. The utility model discloses stable in structure, easy operation, design scientific and reasonable, production cycle is short, and the cost of manufacture is low, and the pneumatic cylinder is convenient for fix, has self-locking function, can save a large amount of time of staff and energy, is worth promoting.

The self-locking safety hydraulic cylinder has the following defects at present:

because the strength that hydraulic pressure born often will be bigger than the dynamics that pure mechanical structure can bear, consequently adopt simple mechanical structure auto-lock, can lead to auto-lock structural damage after long-term the use, unable smooth and easy opening.

In view of the above, the present invention provides a hydraulic cylinder with a safety structure, which is developed and improved in view of the existing structure and defects, so as to achieve the purpose of higher practical value.

Disclosure of Invention

An object of the utility model is to provide a pneumatic cylinder with insurance structure to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a hydraulic cylinder with a fuse structure, comprising:

the base is a base part of the hydraulic cylinder, a cylinder body is arranged at the upper end of the base, a sealing cover is arranged at the upper end of the cylinder body, a piston rod is arranged in the sealing cover in a sliding mode, the piston rod extends to the inner side of the base, a lower end communicating device is arranged on one side of the base, an upper end communicating device is arranged on one side of the cylinder body, and a communicating device is connected between the upper end communicating device and the lower end communicating device.

Preferably, a channel for communicating the lower end communicating vessel with the interior of the cylinder body is formed in the base, and an installation rod is installed at the lower end of the base.

Preferably, the inner side of the sealing cover is provided with a dustproof ring, the inner side of the sealing cover is also provided with a piston sealing ring for maintaining sealing and a piston rod guide sleeve for guiding and positioning, the piston sealing rings are arranged at the upper end and the lower end of the piston rod guide sleeve, and the piston sealing rings are arranged in two groups.

Preferably, the lower end of the piston rod is provided with a lifting piston, the lifting piston is tightly attached to the inner side of the cylinder body, the outer side of the lifting piston is provided with a check ring and an O-shaped ring, the O-shaped ring is arranged at the upper end of the check ring, and the upper end of the lifting piston is further provided with a middle spacer bush.

Preferably, a first hydraulic interface used for connecting a hydraulic driving device is arranged on the upper end communicating vessel, and an overflow valve is connected above the upper end communicating vessel.

Preferably, a second hydraulic interface used for connecting a hydraulic driving device is arranged on the lower end communicating vessel.

Preferably, an electromagnetic valve is arranged inside the communication device.

Compared with the prior art, the beneficial effects of the utility model are that: this pneumatic cylinder with insurance function can be through the insurance mechanism that self carries, when hydraulic drive device breaks down, during unable normal operation, the inside break-make that carries on of control pneumatic cylinder to make the pneumatic cylinder can the gentle activity, avoid the pneumatic cylinder card to die and hydraulic oil to reveal the unnecessary loss that causes, and can lock the pneumatic cylinder under the condition of unable drive pneumatic cylinder and die fixedly, thereby solve current problem.

Drawings

FIG. 1 is a schematic view of the overall three-dimensional structure of the present invention;

FIG. 2 is a schematic diagram of the formal structure of the present invention;

fig. 3 is a schematic sectional view of the present invention.

In the figure: 1. a base; 2. a cylinder body; 3. sealing the cover; 4. a piston rod; 5. mounting a rod; 6. a lower end communicating vessel; 7. an upper end communicating vessel; 8. a communication device; 9. an overflow valve; 10. a dust ring; 11. a piston seal ring; 12. a piston rod guide sleeve; 13. a channel; 14. a middle spacer bush; 15. a retainer ring; 16. an O-ring; 17. a first hydraulic interface; 18. a second hydraulic interface; 19. a lift piston; 20. an electromagnetic valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Base 1, for the base part of this pneumatic cylinder, base 1's upper end is equipped with

cylinder body

2, 2 upper ends of cylinder body are equipped with closing cap 3, the inside of closing cap 3 slides and is provided with piston rod 4, piston rod 4 extends to base 1's inboard, one side of base 1 is equipped with even lower extreme linker 6, one side of cylinder body 2 is equipped with upper end linker 7, be connected with intercommunication device 8 between upper end linker 7 and the lower extreme linker 6, base 1's inside is offered and is used for communicateing lower extreme linker 6 and the inside passageway 13 of cylinder body 2, installation pole 5 is installed to base 1's lower extreme, installation pole 5 is used for installing whole pneumatic cylinder. The inboard of closing cap 3 is equipped with and is used for dirt-proof dust ring 10, and the inboard of closing cap 3 still is equipped with and is used for maintaining sealed piston seal 11, makes to maintain the encapsulated situation between closing cap 3 and the piston rod 4, prevents simultaneously that the dust from getting into to and be used for guiding orientation's piston rod uide bushing 12, can avoid oozing of hydraulic oil, guarantee the closure of pneumatic cylinder, and piston seal 11 locates the upper and lower both ends of piston rod uide bushing 12, and piston seal 11 sets up two sets ofly altogether. A lifting piston 19 is arranged at the lower end of the piston rod 4, the lifting piston 19 is tightly attached to the inner side of the cylinder body 2, a check ring 15 and an O-shaped ring 16 are arranged on the outer side of the lifting piston 19, the O-shaped ring 16 is arranged at the upper end of the check ring 15 to play an isolation role, so that the lifting piston 19 can normally lift up and down, a middle spacer sleeve 14 is further arranged at the upper end of the lifting piston 19, the upper oil circuit is prevented from being blocked by the lifting piston 19, a first hydraulic interface 17 used for connecting a hydraulic driving device is arranged on the upper end communicating device 7, an overflow valve 9 is connected above the upper end communicating device 7, so that bubbles in hydraulic oil are discharged, the hydraulic quality is prevented from being influenced, and a second hydraulic pressure connecting port 18 used for connecting the hydraulic driving device is arranged on the lower end communicating device 6; an electromagnetic valve 20 is arranged in the communication device 8, so that the on-off of oil passages at the upper end and the lower end of the lifting piston 19 can be controlled through the electromagnetic valve 20, and the hydraulic cylinder can be locked or unlocked independently.

In conclusion: the device is installed on equipment through an installation rod 5 of a base 1, and a cylinder body 2 at the upper end of the base 1 is a main hydraulic cylinder. The upper end is sealed through a sealing cover 3, the sealing cover 3 prevents dust from entering through a dust ring 10, a piston sealing ring 11 fills a gap between the sealing cover 3 and a piston rod 4, a piston rod guide sleeve 12 prevents hydraulic oil from seeping out, the piston rod 4 is connected with a lifting piston 19, a middle spacer 14 is arranged on the lifting piston 19, the lifting piston 19 is prevented from blocking an oil inlet on the sealing cover 3, the lifting piston 19 plays an isolation role through a check ring 15 and an O-shaped ring 16, the lifting piston 19 can normally lift up and down, the base 1 is connected with a lower end communicating device 6, the interior of the base 1 is communicated with the cylinder body 2 through a channel 13, the cylinder body 2 is connected with an upper end communicating device 7, the hydraulic driving device is connected through a first hydraulic interface 17 and a second hydraulic interface 18, oil is filled, an overflow valve 9 can discharge gas in the hydraulic oil, the hydraulic driver drives the lifting piston 19 to lift up and down through the hydraulic oil, the communicating device 8 is connected with the upper end communicating device 7 and the lower end communicating device 6, when the hydraulic driving device is damaged, an electromagnetic valve 20 can be started or closed, an oil circuit of the hydraulic cylinder is shorted, the hydraulic cylinder can smoothly fall down, and damage of the hydraulic cylinder is avoided, and the whole use process of the device is finished.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A hydraulic cylinder with a safety structure, comprising:

base (1), for the base part of this pneumatic cylinder, the upper end of base (1) is equipped with cylinder body (2), cylinder body (2) upper end is equipped with closing cap (3), the inside slip of closing cap (3) is provided with piston rod (4), piston rod (4) extend to the inboard of base (1), one side of base (1) is equipped with even lower extreme linker (6), one side of cylinder body (2) is equipped with upper end linker (7), upper end linker (7) with be connected with intercommunication device (8) between lower extreme linker (6).

2. The hydraulic cylinder with the safety structure is characterized in that a channel (13) for communicating a lower end communicating device (6) with the interior of the cylinder body (2) is formed in the base (1), and a mounting rod (5) is mounted at the lower end of the base (1).

3. The hydraulic cylinder with the safety structure according to claim 1, wherein the inner side of the cover (3) is provided with a dustproof ring (10), the inner side of the cover (3) is further provided with a piston sealing ring (11) for maintaining sealing, and a piston rod guide sleeve (12) for guiding and positioning, the piston sealing rings (11) are arranged at the upper end and the lower end of the piston rod guide sleeve (12), and the piston sealing rings (11) are arranged in two groups.

4. The hydraulic cylinder with a safety structure according to claim 1, wherein a lifting piston (19) is arranged at the lower end of the piston rod (4), the lifting piston (19) is tightly attached to the inner side of the cylinder body (2), a retainer ring (15) and an O-shaped ring (16) are arranged on the outer side of the lifting piston (19), the O-shaped ring (16) is arranged at the upper end of the retainer ring (15), and a middle spacer sleeve (14) is further arranged at the upper end of the lifting piston (19).

5. The hydraulic cylinder with the safety structure according to claim 1, wherein a first hydraulic interface (17) for connecting a hydraulic driving device is arranged on the upper end communicating vessel (7), and an overflow valve (9) is connected above the upper end communicating vessel (7).

6. The hydraulic cylinder with a safety structure according to claim 1, wherein the lower end communicating vessel (6) is provided with a second hydraulic connection port (18) for connecting a hydraulic driving device.

7. Hydraulic cylinder with a safety structure according to claim 1, wherein the communication device (8) is internally provided with a solenoid valve (20).