CN113027857A

CN113027857A - Inclined hydraulic oil cylinder with safety valve

Info

Publication number: CN113027857A
Application number: CN202110329207.3A
Authority: CN
Inventors: 刘斌霞
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-27
Filing date: 2021-03-27
Publication date: 2021-06-25

Abstract

The invention discloses an inclined hydraulic oil cylinder with a safety valve, which comprises a cylinder body, wherein a piston is arranged at the bottom of an inner cavity of the cylinder body, the top of the piston is fixedly connected with a first piston rod, and the top of the cylinder body is fixedly connected with a cylinder cover. The invention can effectively solve the problems that the traditional hydraulic oil cylinder is easy to burst and lacks protective measures due to overlarge load in the use process, and the hydraulic oil cylinder can retract at a safe speed if overlarge pressure occurs during heavy-load operation of the hydraulic oil cylinder, so that the safety of operators, surrounding operating personnel and goods is ensured, meanwhile, the cost of an additional safety valve component required by the traditional oil cylinder is reduced, and the popularization and the use are facilitated.

Description

Inclined hydraulic oil cylinder with safety valve

Technical Field

The invention relates to the technical field of hydraulic oil cylinders, in particular to an inclined hydraulic oil cylinder with a safety valve.

Background

The hydraulic oil cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and makes linear reciprocating motion, and has the characteristics of simple structure and reliable work, when the hydraulic oil cylinder is used for realizing reciprocating motion, a speed reducer can be omitted, and the hydraulic oil cylinder has no transmission gap and is stable in motion, so that the hydraulic oil cylinder is widely applied to hydraulic systems of various machines, the output force of the hydraulic oil cylinder is in direct proportion to the effective area of a piston and the pressure difference between the effective area and the two sides of the piston, the hydraulic oil cylinder basically comprises a cylinder barrel, a cylinder cover, a piston rod and a sealing device, and is commonly used as a jacking device, for example, the hydraulic oil cylinder is jacked on a forklift, the oil cavity of the hydraulic oil cylinder is connected with an oil supply device through a joint and a pipeline, when the hydraulic oil in the hydraulic oil cylinder pumps the hydraulic oil cylinder, the piston rod of, when a joint or a hydraulic pipeline of the hydraulic oil cylinder with the structure is burst and fails, hydraulic oil in the hydraulic oil cylinder flows out rapidly in an uncontrolled manner, goods quickly descend under the action of gravity to impact the ground or are impacted by a limiting device, so that the goods are damaged, safety threats are caused to operators, surrounding operators and the goods, and when heavy load fails and descends, the impact is more severe, and the damage and the threats are more serious.

At present, under the condition that the existing inclined hydraulic oil cylinder exceeds working pressure or load in work, a safety valve is connected in series in an oil cylinder and a hydraulic system in a traditional oil cylinder, and the additionally increased valve and component of the system need to increase the cost and are not beneficial to popularization and use.

Disclosure of Invention

The invention aims to provide an inclined hydraulic oil cylinder with a safety valve, which has the advantage of reducing cost and solves the problems that the conventional hydraulic oil cylinder is in series connection with the safety valve in an oil cylinder and a hydraulic system under the condition of exceeding working pressure or load in the working process, and the additionally added valves and components of the system need to be increased in cost and are not beneficial to popularization and use.

In order to achieve the purpose, the invention provides the following technical scheme: an inclined hydraulic oil cylinder with a safety valve comprises a cylinder body, wherein a piston is arranged at the bottom of an inner cavity of the cylinder body, a first piston rod is fixedly connected to the top of the piston, a cylinder cover is fixedly connected to the top of the cylinder body, the top of the first piston rod penetrates through the inner cavity of the cylinder body and extends to the outside of the cylinder cover, a dustproof ring is fixedly connected to the inner cavity of the cylinder cover, the dustproof ring is sleeved on the surface of the first piston rod, a connecting seat is fixedly connected to the bottom of the cylinder body, a cylinder base is fixedly connected to the bottom of the connecting seat, an oil nozzle is communicated with the top of the right side of the cylinder body, a connector is fixedly connected to the right side of the oil nozzle, a movable sleeve is fixedly connected to the bottom of the inner cavity of the cylinder base, a second piston rod is fixedly connected to the inner cavity of the movable sleeve, a piston, the improved oil cylinder is characterized in that a valve body is fixedly connected to the top of the piston sleeve, a spring is fixedly connected to the bottom of the valve body, the spring sleeve is arranged on the surface of the second piston rod, the bottom of the spring is fixedly connected with the bottom of an inner cavity of the cylinder base, an oil return hole is formed in the bottom of the right side of the cylinder base, the right side of the oil return hole is communicated with an oil return pipe, an oil inlet and outlet pipe is communicated with the top of the right side of the cylinder base, and the top of the cylinder.

Preferably, the surface cover of piston is equipped with the ring of wearing, the material of ring of wearing is the polytetrafluoroethylene material.

Preferably, the top fixedly connected with closing cap of cylinder cap, the equal fixedly connected with fixed block in both sides of closing cap, the top threaded connection of fixed block has first screw rod, the closing cap is through first screw rod and closing cap fixed connection.

Preferably, the top fixedly connected with seal receptacle of closing cap, the top fixedly connected with shield of seal receptacle, the surface of first piston rod is all located to the inner chamber of seal receptacle and the inner chamber of shield cover.

Preferably, the bottom of the cylinder seat is fixedly connected with a bottom seal, and two sides of the bottom seal are both in threaded connection with second screw rods.

Preferably, the surface of the cylinder body is provided with an anti-corrosion layer, and the surface of the anti-corrosion layer is fixedly connected with a wear-resistant layer.

Preferably, the anti-corrosion layer is made of a ceramic material, and the wear-resistant layer is a chromium oxide metal ceramic coating.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention can effectively solve the problems that the traditional hydraulic oil cylinder is easy to burst and lacks protective measures due to overlarge load in the use process, and the hydraulic oil cylinder can retract at a safe speed if overlarge pressure occurs during heavy-load operation of the hydraulic oil cylinder, so that the safety of operators, surrounding operating personnel and goods is ensured, meanwhile, the cost of an additional safety valve component required by the traditional oil cylinder is reduced, and the popularization and the use are facilitated.

2. The invention ensures the abrasion resistance of the piston under long-term motion by arranging the abrasion-resistant ring and adopting the polytetrafluoroethylene material, prolongs the service life of the piston, ensures the sealing effect, further effectively prolongs the service life of the hydraulic oil cylinder, can seal the hydraulic oil cylinder by arranging the seal cover, the fixed block and the first screw rod, ensures the whole sealing effect of the oil cylinder, improves the use safety, can further improve the sealing property and the dust-proof effect of the connection between the first piston rod and the cylinder body by arranging the seal seat and the dust-proof cover, can reinforce the cylinder seat by arranging the bottom seal and the second screw rod, ensures the use strength of the cylinder seat, effectively improves the corrosion resistance of the surface of the cylinder body by arranging the anti-corrosion layer and adopting the chromium oxide metal ceramic coating by arranging the abrasion-resistant layer, the wear resistance of the surface of the cylinder body is improved.

Drawings

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

FIG. 2 is a schematic cross-sectional view of the internal structure of the cylinder block of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 1;

fig. 4 is a schematic front view of the structure of the present invention.

In the figure: 1. a cylinder body; 2. a piston; 3. a first piston rod; 4. a cylinder cover; 5. a dust ring; 6. a connecting seat; 7. a cylinder base; 8. a nozzle tip; 9. a connector; 10. a movable sleeve; 11. a second piston rod; 12. a piston sleeve; 13. a valve body; 14. a spring; 15. an oil return hole; 16. an oil return pipe; 17. an oil inlet pipe and an oil outlet pipe; 18. an antiwear ring; 19. sealing the cover; 20. a fixed block; 21. a first screw; 22. a sealing seat; 23. a dust cover; 24. bottom sealing; 25. a second screw; 26. an anti-corrosion layer; 27. and a wear-resistant layer.

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, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The components used in the present invention are all standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experiments.

Referring to fig. 1-4, an inclined hydraulic cylinder with a safety valve comprises a cylinder body 1, wherein an anti-corrosion layer 26 is arranged on the surface of the cylinder body 1, a wear-resistant layer 27 is fixedly connected to the surface of the anti-corrosion layer 26, the anti-corrosion layer 26 is made of a ceramic material, the wear-resistant layer 27 is made of a chromium oxide cermet coating, a piston 2 is arranged at the bottom of an inner cavity of the cylinder body 1, an anti-wear ring 18 is sleeved on the surface of the piston 2, the anti-wear ring 18 is made of a polytetrafluoroethylene material, a first piston rod 3 is fixedly connected to the top of the piston 2, a cylinder cover 4 is fixedly connected to the top of the cylinder body 1, a seal cover 19 is fixedly connected to the top of the cylinder cover 4, fixed blocks 20 are fixedly connected to both sides of the seal cover 19, a first screw 21 is threadedly connected to the top of the fixed block 20, the seal cover, the top of the sealing seat 22 is fixedly connected with a dust cap 23, the inner cavity of the sealing seat 22 and the inner cavity of the dust cap 23 are both sleeved on the surface of the first piston rod 3, the top of the first piston rod 3 penetrates through the inner cavity of the cylinder body 1 and extends to the outside of the cylinder cover 4, the inner cavity of the cylinder cover 4 is fixedly connected with a dust ring 5, the dust ring 5 is sleeved on the surface of the first piston rod 3, the bottom of the cylinder body 1 is fixedly connected with a connecting seat 6, the bottom of the connecting seat 6 is fixedly connected with a cylinder seat 7, the bottom of the cylinder seat 7 is fixedly connected with a bottom seal 24, both sides of the bottom seal 24 are both in threaded connection with second screw rods 25, the top of the right side of the cylinder body 1 is communicated with an oil nozzle 8, the right side of the oil nozzle 8 is fixedly connected with a connecting head 9, the bottom of the inner cavity of the cylinder seat 7 is, the inner cavity of the piston sleeve 12 is movably connected with the second piston rod 11, the top of the piston sleeve 12 is fixedly connected with a valve body 13, the bottom of the valve body 13 is fixedly connected with a spring 14, the spring 14 is sleeved on the surface of the second piston rod 11, the bottom of the spring 14 is fixedly connected with the bottom of the inner cavity of the cylinder base 7, the bottom of the right side of the cylinder base 7 is provided with an oil return hole 15, the right side of the oil return hole 15 is communicated with an oil return pipe 16, the top of the right side of the cylinder base 7 is communicated with an oil inlet and outlet pipe 17, the top of the cylinder base 7 is communicated with the cylinder body 1, through the arrangement of an anti-wear ring 18, the piston is made of polytetrafluoroethylene materials, the anti-wear performance of the piston 2 under long-term motion is ensured, the service life of the piston 2 is prolonged, the sealing effect is ensured, the service life of the hydraulic, the integral sealing effect of the oil cylinder is ensured, the use safety is improved, the sealing performance and the dust-proof effect of the connection between the first piston rod 3 and the cylinder body 1 can be further improved by arranging the sealing seat 22 and the dust-proof cover 23, the cylinder seat 7 can be reinforced by arranging the bottom seal 24 and the second screw 25, the use strength of the cylinder seat 7 is ensured, the corrosion resistance of the surface of the cylinder body 1 is effectively improved by arranging the corrosion-proof layer 26 and adopting the ceramic material, the wear resistance of the surface of the cylinder body 1 is improved by arranging the wear-proof layer 27 and adopting the chromium oxide metal ceramic coating, the cylinder body 1, the piston 2, the first piston rod 3, the cylinder cover 4, the dust-proof ring 5, the connecting seat 6, the cylinder seat 7, the oil nozzle 8, the connecting head 9, the movable sleeve 10, the second piston rod 11, the piston sleeve 12, the valve body 13, the spring 14, the oil return hole 15, the oil return pipe 16 and the oil inlet and outlet, can effectual solution traditional hydraulic cylinder in the use too big emergence that leads to the phenomenon of bursting easily of load, lack the problem of safeguard measure, this hydraulic cylinder is when carrying out heavy load operation, if the too big phenomenon of emergence pressure, can make hydraulic cylinder retract with safe speed, and then guarantee the security of operator, operation personnel and goods on every side, reduced the cost that traditional cylinder need increase extra safety valve subassembly simultaneously, be favorable to using widely.

When in use, in the lifting process of the first piston rod 3, hydraulic oil enters the interior of the cylinder body 1 through the oil inlet and outlet pipe 17, the piston 2 is pressed, the piston 2 is lifted to drive the first piston rod 3 to be lifted, when the load of the first piston rod 3 exceeds the rated requirement, the first piston rod 3 is prevented from rising, the oil pressure inside the cylinder 1 increases, when the oil pressure exceeds the pressure of the spring 14, the oil pressure applies pressure to the valve body 13, meanwhile, the spring 14 is driven to compress, the valve body 13 is driven to descend by the spring 14, the second piston rod 11 is driven to descend by the valve body 13, when the valve body 13 descends below the oil return hole 15, the hydraulic oil inside the cylinder 1 flows out through the oil return hole 15, thereby reach the effect of pressure release to avoid hydraulic cylinder to appear the potential safety hazard that bursts at the negative pressure in-process, reduced the cost of adopting the hydraulic cylinder production of traditional safe subassembly simultaneously.

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. The utility model provides a tilting has hydraulic cylinder of relief valve, includes cylinder body (1), its characterized in that: the bottom of the inner cavity of the cylinder body (1) is provided with a piston (2), the top of the piston (2) is fixedly connected with a first piston rod (3), the top of the cylinder body (1) is fixedly connected with a cylinder cover (4), the top of the first piston rod (3) penetrates through the inner cavity of the cylinder body (1) and extends to the outside of the cylinder cover (4), the inner cavity of the cylinder cover (4) is fixedly connected with a dust ring (5), the dust ring (5) is sleeved on the surface of the first piston rod (3), the bottom of the cylinder body (1) is fixedly connected with a connecting seat (6), the bottom of the connecting seat (6) is fixedly connected with a cylinder seat (7), the top on the right side of the cylinder body (1) is communicated with an oil nozzle (8), the right side of the oil nozzle (8) is fixedly connected with a connecting head (9), the bottom of the inner cavity of the cylinder seat, the utility model discloses a cylinder structure, including cylinder seat (7), inner chamber fixedly connected with second piston rod (11) of movable sleeve (10), the top cover of second piston rod (11) is equipped with piston sleeve (12), be swing joint between the inner chamber of piston sleeve (12) and second piston rod (11), the top fixedly connected with valve body (13) of piston sleeve (12), bottom fixedly connected with spring (14) of valve body (13), the surface of second piston rod (11) is located in the cover of spring (14), the bottom of spring (14) and the bottom fixed connection of cylinder seat (7) inner chamber, oil gallery (15) have been seted up to the bottom on cylinder seat (7) right side, the right side intercommunication of oil gallery (15) has oil return pipe (16), the top intercommunication on cylinder seat (7) right side has business turn over oil pipe (17), the top and cylinder body (1) intercommunication of cylinder seat (7).

2. The tilting hydraulic cylinder with safety valve as defined in claim 1, characterized in that: the surface cover of piston (2) is equipped with ring (18) of wearing, the material of ring (18) of wearing is the polytetrafluoroethylene material.

3. The tilting hydraulic cylinder with safety valve as defined in claim 1, characterized in that: the top fixedly connected with closing cap (19) of cylinder cap (4), the equal fixedly connected with fixed block (20) in both sides of closing cap (19), the top threaded connection of fixed block (20) has first screw rod (21), closing cap (19) are through first screw rod (21) and closing cap (19) fixed connection.

4. The hydraulic ram of claim 3, wherein the tilting hydraulic ram is provided with a relief valve, and the tilting hydraulic ram is characterized in that: the top fixedly connected with seal receptacle (22) of closing cap (19), the top fixedly connected with shield (23) of seal receptacle (22), the surface of first piston rod (3) is all located to the inner chamber of seal receptacle (22) and the inner chamber of shield (23) cover.

5. The tilting hydraulic cylinder with safety valve as defined in claim 1, characterized in that: the bottom of the cylinder base (7) is fixedly connected with a bottom seal (24), and two sides of the bottom seal (24) are in threaded connection with second screw rods (25).

6. The tilting hydraulic cylinder with safety valve as defined in claim 1, characterized in that: the surface of the cylinder body (1) is provided with an anti-corrosion layer (26), and the surface of the anti-corrosion layer (26) is fixedly connected with a wear-resistant layer (27).

7. The tilting hydraulic cylinder with safety valve as defined in claim 6, characterized in that: the anti-corrosion layer (26) is made of a ceramic material, and the wear-resistant layer (27) is a chromium oxide metal ceramic coating.