CN220185504U

CN220185504U - Hydraulic cylinder with protection device

Info

Publication number: CN220185504U
Application number: CN202321945546.5U
Authority: CN
Inventors: 王贺; 吴海峰
Original assignee: Beijing Changping Hydraulic Machinery Co ltd
Current assignee: Beijing Changping Hydraulic Machinery Co ltd
Priority date: 2023-07-21
Filing date: 2023-07-21
Publication date: 2023-12-15
Anticipated expiration: 2033-07-21

Abstract

The utility model relates to a hydraulic cylinder with a protection device, which belongs to the technical field of hydraulic equipment, and comprises a cylinder barrel and a hydraulic rod, wherein one end of the hydraulic rod is inserted into the cylinder barrel, the hydraulic rod is in sliding connection with the cylinder barrel along the axial direction of the cylinder barrel, a piston is fixedly arranged at one end of the hydraulic rod inserted into the cylinder barrel, the outer wall of the piston is abutted with the inner wall of the cylinder barrel, the piston is in sliding connection with the cylinder barrel along the axial direction of the cylinder barrel, a bottom plate is fixedly arranged at one end of the cylinder barrel away from the hydraulic rod, a middle plate is fixedly arranged at one end of the cylinder barrel away from the bottom plate, a plurality of support rods are fixedly connected between the middle plate and the bottom plate, and the support rods are uniformly distributed at the outer side of the cylinder barrel at intervals; the utility model has the effect of protecting the hydraulic cylinder.

Description

Hydraulic cylinder with protection device

Technical Field

The utility model relates to the technical field of hydraulic equipment, in particular to a hydraulic cylinder with a protection device.

Background

The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion), has simple structure and reliable work, can avoid a speed reducing device when being used for realizing reciprocating motion, has no transmission clearance and stable motion, and is widely applied to hydraulic systems of various machines.

At present, the hydraulic rod mainly comprises a cylinder barrel, a hydraulic rod, a cylinder cover and a piston, wherein a liquid outlet and a liquid inlet are formed in the outer side of the cylinder barrel, and the hydraulic rod drives the piston to do linear reciprocating motion along the axis direction of the cylinder barrel through interaction of the liquid outlet and the liquid inlet.

Aiming at the related technology, when a worker installs and uses the hydraulic rod, the cylinder barrel of the hydraulic cylinder can collide with the ground or other places due to misoperation or environmental influence, so that the hydraulic cylinder is damaged, and the inventor considers that the damage of the hydraulic cylinder can have a great influence on the service life of the hydraulic cylinder.

Disclosure of Invention

In order to enable the hydraulic cylinder not to be damaged easily, the utility model provides the hydraulic cylinder with the protection device.

The hydraulic cylinder with the protection device provided by the utility model adopts the following technical scheme:

the utility model provides a pneumatic cylinder with protection device, including cylinder and hydraulic stem, the one end of hydraulic stem inserts in the cylinder, and the hydraulic stem is along the axis direction and the cylinder sliding connection of cylinder, the one end that the hydraulic stem inserted the cylinder has set firmly the piston, piston outer wall and cylinder inner wall butt, and piston and cylinder along cylinder axis direction and cylinder sliding connection, the one end that the hydraulic stem was kept away from to the cylinder has set firmly the bottom plate, the one end that the cylinder kept away from the bottom plate has set firmly the medium plate, fixedly connected with a plurality of bracing pieces between medium plate and bottom plate, a plurality of bracing pieces even interval distribution is in the outside of cylinder.

Through adopting above-mentioned technical scheme, when pneumatic cylinder bumps with ground or mounting bracket, the support that comprises medium plate, bottom plate and bracing piece that the cylinder outside set up can play certain guard action to the cylinder outside for the cylinder outer wall is difficult for taking place to damage through above-mentioned technique, thereby plays the effect that the protection pneumatic cylinder is not destroyed.

Optionally, the medium plate deviates from one side of bottom plate and is provided with the upper plate, and the one end and the upper plate fixed connection of piston are kept away from to the hydraulic pressure pole are provided with the slide bar between upper plate and the medium plate, and the slide bar is equipped with a plurality of, and the one end and the medium plate fixed connection of slide bar, slide bar pass through the upper plate, and upper plate slide bar along self length direction and upper plate sliding connection.

Through adopting above-mentioned technical scheme, when the pneumatic cylinder is at the during operation, the piston drives the hydraulic stem and makes reciprocating rectilinear motion along the axis direction of cylinder to make the upper plate realize reciprocating rectilinear motion along with the hydraulic stem, because the upper plate is at the protection of motion in-process to the hydraulic stem, make the hydraulic stem be difficult for taking place to collide with in the motion process.

Optionally, the slide bar outside is close to medium plate department cover and is equipped with buffer spring, buffer spring's one end and medium plate are close to one side fixed connection of upper plate.

Through adopting above-mentioned technical scheme, hydraulic system is in the course of the work, and the promotion of liquid can make the hydraulic stem drive the piston and do reciprocal rectilinear motion along cylinder axis direction to when making the upper plate move to the direction that is close to or keep away from the medium plate, when the upper plate is close to the medium plate, buffer spring can make the impact force when moving reduce, through above-mentioned technique, has played the effect that reduces the impact force production when piston and cylinder tip move.

Optionally, the outside cover of hydraulic stem is equipped with the bellows, bellows one end and medium plate fixed connection, and the one end and the upper plate fixed connection of medium plate are kept away from to the bellows.

Through adopting above-mentioned technical scheme, the hydraulic stem is when carrying out the during operation, and when the upper plate moved to the direction that is close to the medium plate, the bellows was in compressed state, and when the upper plate moved away from the direction of medium plate, the bellows was opened, plays the effect of sheltering from the granule that drops in the operational environment for the phenomenon such as fish tail of outer wall is difficult for appearing in the course of the work to the hydraulic stem through above-mentioned technique.

Optionally, the cylinder is provided with the seal cover in the junction with the medium plate, and the concave station has been seted up to one side that the medium plate is close to the bottom plate, and one side that the seal cover is located the concave station towards the medium plate, and seal cover and concave station joint adaptation, the one end and the cylinder grafting adaptation of the medium plate are kept away from to the seal cover.

Through adopting above-mentioned technical scheme, when the pneumatic cylinder in the course of the work, through set up the seal cover in cylinder and medium plate junction for the motion in-process of hydraulic stem and medium plate, the liquid in the cylinder is difficult for spilling, through above-mentioned technique, prevents that the liquid in the cylinder from leaking the cylinder outside and causing the cylinder outer wall to corrode.

Optionally, first oilhole and second oilhole have been seted up along self center to the cylinder lateral wall, and first oilhole and second oilhole are located the both sides of piston along the length direction distribution of cylinder, and first oilhole and second oilhole opening part all are equipped with coupling assembling, and coupling assembling includes connecting pipe and thread bush, and the one end and the cylinder of connecting pipe are in first oilhole or second oilhole department threaded connection, and the one end and the thread bush threaded connection of cylinder are kept away from to the connecting pipe.

Through adopting above-mentioned technical scheme, when hydraulic system during operation, need carry out pipe connection at first oilhole and second oilhole, the staff is with the one end of connecting pipe and the port department threaded connection of first oilhole, and the one end and the pipeline nested connection of cylinder are kept away from to the connecting pipe, and the staff rethread thread bush is fixed with transfer line and connecting pipe, and the staff is repeated above step in second oilhole department for hydraulic system moves more stably at the in-process of work through above-mentioned technique.

Optionally, the connecting pipe is all set firmly first sealing washer in the junction with the cylinder, and the connecting pipe is set firmly the second sealing washer in the junction with the thread bush.

Through adopting above-mentioned technical scheme, when hydraulic system is at the during operation, liquid lets in the connecting pipe entering cylinder, and the staff makes the connecting of transfer line and connecting pipe more laminate through the second sealing washer, makes to be connected between connecting pipe and the cylinder more closely through first sealing washer for liquid in the transfer line is difficult for leaking to the cylinder outside through above-mentioned technique.

Optionally, a connecting piece is fixedly arranged between the middle plate and the bottom plate, and a flexible sleeve is fixedly arranged in the middle of the connecting piece.

Through adopting above-mentioned technical scheme, when the staff need carry the pneumatic cylinder, the staff holds the flexible cover of connecting piece, mentions the pneumatic cylinder and carries to appointed position, through above-mentioned technique, effectively reduces the work degree of difficulty of staff.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. the protection device formed by the middle plate, the bottom plate and the support rods reduces damage to the hydraulic cylinder caused by collision in the moving process of the hydraulic cylinder when the collision occurs in the moving process through the middle plate and the bottom plate which are arranged at the end parts of the cylinder barrel and the support rods which are connected between the middle plate and the bottom plate;

2. the outer side of the hydraulic rod is provided with the corrugated pipe, when the hydraulic cylinder works, the outer wall of the hydraulic rod is not easy to damage due to the external environment by protecting the hydraulic rod through the corrugated pipe, and the hydraulic cylinder is further protected;

3. through the effect of upper plate and buffer spring for hydraulic system has reduced the production of impact force in the in-process of work, thereby makes the piston be difficult for taking place to damage because of impact force.

Drawings

FIG. 1 is a schematic view of a hydraulic cylinder with a protection device according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view showing the internal structure of a hydraulic cylinder according to an embodiment of the present utility model;

fig. 3 is a partial enlarged view of a portion a in fig. 2.

In the figure, 1, a bottom plate; 2. a support rod; 3. a middle plate; 31. a concave table; 32. sealing sleeve; 33. a buffer spring; 4. a slide bar; 5. an upper plate; 6. a hydraulic cylinder; 61. a hydraulic rod; 62. a cylinder; 621. a first oil hole; 622. a second oil hole; 63. a piston; 7. a bellows; 8. a connection assembly; 81. a connecting pipe; 811. a first seal ring; 812. a second seal ring; 82. a thread sleeve; 9. a connecting piece; 91. a flexible sleeve.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-3.

The embodiment of the utility model discloses a hydraulic cylinder with a protection device.

Referring to fig. 1 and 2, a hydraulic cylinder with a protection device includes a cylinder 62 and a hydraulic rod 61, wherein one end of the hydraulic rod 61 is inserted into the cylinder 62, the hydraulic rod 61 is slidably connected with the cylinder 62 along the length direction of the hydraulic rod 61, one end of the hydraulic rod 61 inserted into the cylinder 62 is fixedly provided with a piston 63, the hydraulic rod 61 drives the piston 63 to be slidably connected with the cylinder 62 along the length direction of the hydraulic rod, the outer wall of the piston 63 is abutted with the inner wall of the cylinder 62, the outer wall of the cylinder 62 is provided with a first oil hole 621 and a second oil hole 622 along the center of the cylinder 62 in a penetrating manner, and the first oil hole 621 and the second oil hole 622 are distributed on two sides of the piston 63 along the length direction of the cylinder 62.

When the hydraulic cylinder 6 works, when the hydraulic rod 61 is required to be retracted into the cylinder 62, a worker injects oil into the first oil hole 621, pumps oil from the second oil hole 622, the oil flows through the connecting pipe 81 and enters the cylinder 62, the liquid pushes the piston 63 to slide along the axis of the cylinder 62 towards the position close to the end of the cylinder 62, and the piston 63 drives the hydraulic rod 61 to slide, so that the hydraulic rod 61 is retracted into the cylinder 62; when the hydraulic cylinder 6 needs to eject the hydraulic rod 61, when the worker injects oil from the second oil hole 622, the first oil hole 621 pumps oil, and the oil pushes the piston 63 to drive the hydraulic rod 61 to slide along the axis of the cylinder 62 to a position far away from the end of the cylinder 62, so that the hydraulic rod 61 is ejected from the cylinder 62.

Referring to fig. 1, the bottom plate 1 has been set firmly in the one end that keeps away from pneumatic cylinder 6 to cylinder 62, the middle plate 3 has been set firmly in the one end that keeps away from bottom plate 1 to cylinder 62, fixedly connected with four spinal branch vaulting poles 2 between middle plate 3 and bottom plate 1, four spinal branch vaulting poles 2 evenly spaced distribute in the outside of hydraulic rod 61, hydraulic rod 61 has set firmly upper plate 5 in the one end that keeps away from piston 63, upper plate 5 is provided with four slide bars 4 between with middle plate 3, four slide bars 4 evenly spaced distribute around hydraulic rod 61, slide bars 4 run through upper plate 5, and slide bars 4 are along self length direction and upper plate 5 sliding connection, slide bars 4 outside cover is equipped with buffer spring 33, buffer spring 33's one end and middle plate 3 fixed connection, hydraulic rod 61 week side cover is equipped with bellows 7, bellows 7's one end and upper plate 5 fixed connection, bellows 7 is kept away from the one end and middle plate 3 fixed connection of upper plate 5, medium plate 3 and bottom plate 1 fixedly connected with connecting piece 9, flexible cover 91 has been set firmly at the middle part of connecting piece 9.

When the worker moves the hydraulic cylinder 6, the worker holds the flexible sleeve 91 to lift the hydraulic cylinder 6, then moves the hydraulic cylinder 6 to a designated position, the worker starts the hydraulic cylinder 6, the upper plate 5 slides along with the movement of the hydraulic rod 61, the buffer spring 33 is compressed when the upper plate 5 approaches the middle plate 3, the corrugated tube 7 is in a compressed state, the inertia impact force generated by the upper plate 5 is reduced due to the elastic force generated when the buffer spring 33 is compressed, and when the upper plate 5 is far away from the middle plate 3 along the length direction of the sliding rod 4, the corrugated tube 7 is in an open state.

Referring to fig. 3, a sealing sleeve 32 is arranged at the joint of the cylinder 62 and the middle plate 3, a concave table 31 is arranged at one side of the middle plate 3 close to the bottom plate 1, the sealing sleeve 32 faces to one side of the middle plate 3 and is positioned in the middle plate 3, the sealing sleeve 32 is in clamping fit with the middle plate 3, one end of the sealing sleeve 32 far away from the middle plate 3 is inserted into the cylinder 62 and is in splicing fit with the cylinder 62, one end of a hydraulic rod 61 penetrates through the middle plate 3 and the sealing sleeve 32 and is inserted into the cylinder 62, the cylinder 62 is provided with a connecting component 8 at the first oil hole 621 and the second oil hole 622, the connecting component 8 comprises a connecting pipe 81 and a threaded sleeve 82, one end of the connecting pipe 81 is in threaded connection with the cylinder 62, one end of the connecting pipe 81 far away from the cylinder 62 is in threaded connection with the threaded sleeve 82, a first sealing ring 811 is fixedly arranged at the joint of the connecting pipe 81 and the cylinder 62, and a second sealing ring 812 is fixedly arranged at the joint of the connecting pipe 81 and the threaded sleeve 82.

When the hydraulic system needs to work, a worker inlays the sealing sleeve 32 at the joint of the middle plate 3 and the cylinder barrel 62, then installs the infusion tube, the worker first connects one end of the connecting tube 81 with the cylinder barrel 62 in a threaded manner, one end of the connecting tube 81 far away from the cylinder barrel 62 is connected with the infusion tube in a nested manner, and the worker screws up the threaded sleeve 82, so that the infusion tube is fixedly connected with the connecting tube 81.

The implementation principle of the hydraulic cylinder with the protection device provided by the embodiment of the utility model is as follows: when the hydraulic cylinder 6 needs to be installed, a worker lifts the hydraulic cylinder 6 through the connecting piece 9, because the bottom plate 1, the middle plate 3, the supporting rod 2 and the upper plate 5 which are arranged on the outer side of the hydraulic cylinder 6 enable collision generated in the moving process of the hydraulic cylinder 6 not to easily generate larger influence on the hydraulic cylinder 6, after the installation is completed, the worker installs the connecting component 8 at the first oil hole 621 and the second oil hole 622 on the outer side of the cylinder 62, when the hydraulic cylinder 6 works, liquid enters from the first oil hole 621, the piston 63 slides towards the end part of the cylinder 62 along the axis of the cylinder 62 through the action of the liquid, so that the hydraulic rod 61 slides, and then the upper plate 5 moves towards the direction close to the middle plate 3 along the axis direction of the sliding rod 4, after the upper plate 5 abuts against the buffer spring 33, the buffer spring 33 generates resilience force, so that the generation of impact force between the piston 63 and the inner wall of the cylinder 62 is reduced, and the damage to the hydraulic cylinder 6 is effectively reduced through the technology.

The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides a pneumatic cylinder with protection device, includes cylinder (62) and hydraulic rod (61), in one end of hydraulic rod (61) inserts cylinder (62), and hydraulic rod (61) are along the axis direction and the cylinder (62) sliding connection of cylinder (62), its characterized in that: the hydraulic rod (61) inserts one end of cylinder (62) and has set firmly piston (63), piston (63) outer wall and cylinder (62) inner wall butt, and piston (63) and cylinder (62) are along cylinder (62) axis direction and cylinder (62) sliding connection, the one end that cylinder (62) kept away from hydraulic rod (61) has set firmly bottom plate (1), the one end that cylinder (62) kept away from bottom plate (1) has set firmly medium plate (3), fixedly connected with a plurality of bracing pieces (2) between medium plate (3) and bottom plate (1), a plurality of bracing pieces (2) evenly spaced distribute in the outside of cylinder (62).

2. A hydraulic cylinder with a protection device according to claim 1, characterized in that: one side that medium plate (3) deviate from bottom plate (1) is provided with upper plate (5), and the one end and upper plate (5) fixed connection of piston (63) are kept away from to hydraulic pressure pole (61), are provided with slide bar (4) between upper plate (5) and medium plate (3), and slide bar (4) are equipped with a plurality of, and the one end and medium plate (3) fixed connection of slide bar (4), slide bar (4) run through upper plate (5), and slide bar (4) follow self length direction and upper plate (5) sliding connection.

3. A hydraulic cylinder with protection device according to claim 2, characterized in that: the buffer spring (33) is sleeved on the outer side of the sliding rod (4) close to the middle plate (3), and one end of the buffer spring (33) is fixedly connected with one side of the middle plate (3) close to the upper plate (5).

4. A hydraulic cylinder with protection device according to claim 2, characterized in that: the outside cover of hydraulic stem (61) is equipped with bellows (7), and bellows (7) one end and medium plate (3) fixed connection, the one end and upper plate (5) fixed connection of medium plate (3) are kept away from to bellows (7).

5. A hydraulic cylinder with a protection device according to claim 1, characterized in that: the cylinder (62) is provided with seal cover (32) in the junction with medium plate (3), and concave station (31) have been seted up to one side that medium plate (3) is close to bottom plate (1), and one side that seal cover (32) are located concave station (31) towards medium plate (3), and seal cover (32) and concave station (31) joint adaptation, and the one end and cylinder (62) grafting adaptation of medium plate (3) are kept away from to seal cover (32).

6. A hydraulic cylinder with a protection device according to claim 1, characterized in that: the cylinder (62) lateral wall has seted up first oilhole (621) and second oilhole (622) along self center, and first oilhole (621) and second oilhole (622) are located the both sides of piston (63) respectively along the length direction of cylinder (62), and first oilhole (621) all are equipped with coupling assembling (8) with second oilhole (622) opening part, and coupling assembling (8) include connecting pipe (81) and thread bush (82), and the one end and the cylinder (62) of connecting pipe (81) are in first oilhole (621) or second oilhole (622) department threaded connection, and the one end and thread bush (82) threaded connection of cylinder (62) are kept away from to connecting pipe (81).

7. A hydraulic cylinder with a protection device according to claim 6, characterized in that: the connecting pipes (81) are fixedly provided with first sealing rings (811) at the connection positions of the connecting pipes and the cylinder barrel (62), and the connecting pipes (81) are fixedly provided with second sealing rings (812) at the connection positions of the connecting pipes and the threaded sleeves (82).

8. A hydraulic cylinder with a protection device according to claim 1, characterized in that: a connecting piece (9) is fixedly arranged between the middle plate (3) and the bottom plate (1), and a flexible sleeve (91) is fixedly arranged in the middle of the connecting piece (9).