CN114109962A

CN114109962A - Servo hydraulic cylinder

Info

Publication number: CN114109962A
Application number: CN202111348455.9A
Authority: CN
Inventors: 廖长江; 周进
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-03-01

Abstract

The invention relates to the technical field of hydraulic oil cylinders, in particular to a servo hydraulic oil cylinder, which comprises an oil cylinder body, wherein a guide sleeve is fixedly arranged on the right side of the inner surface of the oil cylinder body, a piston is slidably arranged in the oil cylinder body, and a piston rod is fixedly connected to the middle position on the right side of the outer surface of the piston, in addition, the telescopic cylinder is arranged, so that the piston can be buffered, and the piston is prevented from being seriously damaged when moving.

Description

Servo hydraulic cylinder

Technical Field

The invention relates to the technical field of hydraulic oil cylinders, in particular to a servo hydraulic oil cylinder.

Background

The hydraulic cylinder is an actuating element in a hydraulic transmission system and is an energy conversion device for converting hydraulic energy into mechanical energy. The hydraulic motor performs a continuous rotary motion, while the hydraulic cylinder performs a reciprocating motion. The hydraulic cylinder may be used in combination of two or more or in combination with other mechanisms, in addition to being used singly. To accomplish a particular function. The hydraulic cylinder has simple structure and reliable work and is widely applied to a hydraulic system of a machine tool.

Present in hydraulic cylinder working process, the sliding surface pressure of piston is high, arouse the sintering phenomenon, lead to the internal surface of cylinder to take place crowded split, the metal that is crowded split drops, stay in the jar, in addition, can drive the piston rod when the piston removes and remove, the piston rod can rub when removing between with the uide bushing, however, if the piston rod surface adheres to the lubricating oil that has the metallic impurity of taking and gets into in the uide bushing, can lead to the frictional force increase between piston rod and the uide bushing, produce a large amount of heats, these heats can make hydraulic oil become thick, influence the velocity of flow of hydraulic oil, in addition, these impurities can make the mar appear in piston rod and uide bushing surface, influence the leakproofness between piston rod and the uide bushing, and the service life is shortened.

To this end, a servo hydraulic ram is proposed.

Disclosure of Invention

The invention aims to provide a servo hydraulic oil cylinder to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a servo hydraulic oil cylinder comprises an oil cylinder body, wherein a guide sleeve is fixedly arranged on the right side of the inner surface of the oil cylinder body, a piston is slidably arranged in the oil cylinder body, a piston rod is fixedly connected to the middle position of the right side of the outer surface of the piston, one end, far away from the piston, of the piston rod penetrates through the guide sleeve and is fixedly connected with the oil cylinder body and a dustproof sleeve, a first oil injection port and a second oil injection port are symmetrically and fixedly arranged on two sides of the outer surface of the oil cylinder body, a cleaning mechanism is arranged on the left side of the outer surface of the guide sleeve, and a buffer mechanism capable of reducing impact is arranged on the left side of the inner surface of the oil cylinder body;

the cleaning mechanism comprises a telescopic cylinder, a fixed seat, a push plate, an air cavity, a filter plate and an air passage, wherein the fixed seat and the telescopic cylinder are sleeved on the outer surface of the piston rod and leave a gap with the piston rod, the right side of the outer surface of the fixed seat is fixedly connected with the guide sleeve, the telescopic cylinder is fixedly arranged on the left side of the outer surface of the fixed seat, the inner surface of the fixed seat is fixedly connected with a filter plate at the position close to the telescopic cylinder, the inner surface of the fixed seat is provided with a push plate in a sliding way at the right side direction of the filter plate, the push plate, the piston rod and the air cavity are all sealed in a sliding way, the air cavity is formed among the right side of the outer surface of the push plate, the inner surface of the fixed seat and the outer surface of the piston rod, air passages are symmetrically arranged in the fixed seat, and one end of the air passage is communicated with the air cavity, the other end of the air passage is communicated with the telescopic cylinder, and an auxiliary cleaning mechanism is arranged in the middle position of the right side of the outer surface of the oil cylinder body.

When the hydraulic oil filter is in work, the piston rod can rub the guide sleeve when moving, however, if lubricating oil with metal impurities attached to the surface of the piston rod enters the guide sleeve, the friction force between the piston rod and the guide sleeve is increased, a large amount of heat is generated, the hydraulic oil can become thick due to the heat, and the flow rate of the hydraulic oil is influenced, in addition, the impurities can scratch the surfaces of the piston rod and the guide sleeve, the sealing property between the piston rod and the guide sleeve is influenced, and the service life is shortened. Thereby preventing metal impurities from entering between the guide sleeve and the piston rod, and in addition, the filtered metal impurities are attached to the surface of the filter plate, so that the filtering performance of the filter plate is deteriorated, through arranging a series of structures such as a telescopic cylinder, a fixed seat, an air passage and the like, when the piston moves to one side of the telescopic cylinder, the telescopic cylinder is extruded and contracted by the piston, the gas in the piston can enter the air cavity through the air passage, the volume of the gas in the air cavity is increased, so that the push plate moves towards the direction close to the filter plate, hydraulic oil in a space formed by the right side of the outer surface of the filter plate and the left side of the outer surface of the push plate is extruded to one side of the filter plate, so that the impurities accumulated on the surface of the filter plate are dispersed, thereby improving the filtering performance of the filter plate, through arranging the filter plate, the metal impurities are prevented from entering between the guide sleeve and the piston rod, and the friction force between the piston rod and the guide sleeve is prevented from being overlarge, the novel filter plate has the advantages that a large amount of heat is generated, hydraulic oil is thickened, scratches on the surfaces of the piston rod and the guide sleeve are avoided, the sealing performance between the piston rod and the guide sleeve is guaranteed, the service life is prolonged, impurities accumulated on the surface of the filter plate can be treated by arranging a series of structures such as the telescopic cylinder, the fixing seat and the air passage, the filter plate is prevented from being blocked, the filtering performance of the filter plate is prevented from being influenced, in addition, the piston can be buffered by arranging the telescopic cylinder, and the piston is prevented from being severely damaged when moving.

Preferably, the buffer mechanism comprises a buffer block, a partition plate, a connecting column, a buffer plate, a round hole, a cylinder, a first spring and a limit plate, the clapboard is fixedly arranged on the left side of the inner surface of the oil cylinder body, a buffer solution is filled in a cavity formed by the left side of the outer surface of the clapboard and the oil cylinder body, a buffer plate is arranged in the cavity in a sliding manner, a round hole is formed in the surface of the buffer plate, a connecting column is fixedly connected at the middle position of the outer surface of the buffer plate, one end of the connecting column, which is far away from the buffer plate, penetrates through the partition plate and is fixedly connected with the buffer block, the left side of the outer surface of the buffer plate is symmetrically and fixedly connected with cylinders, one end of the cylinder, which is far away from the buffer plate, penetrates through the oil cylinder body and is fixedly connected with a limiting plate, a first spring is sleeved on the outer surface of the cylinder, one end of the first spring is fixedly connected with the limiting plate, and the other end of the limiting plate is fixedly connected with the oil cylinder body.

When the buffer device works, although the piston can be buffered by arranging the telescopic cylinder, the piston does reciprocating motion, when the piston moves in the direction far away from the telescopic cylinder, the telescopic cylinder cannot buffer the piston, the piston can collide with the end part of the oil cylinder body to cause damage to the piston and the oil cylinder body, by arranging the buffer mechanism, when the piston moves in the direction far away from the telescopic cylinder, the piston pushes the buffer block to move in the direction close to the partition plate, the connecting column fixedly connected with the buffer block and the buffer plate move along with the buffer block, however, when the buffer plate moves, the buffer solution in the space formed by the left side of the outer surface of the buffer plate and the oil cylinder body can enter the space formed by the buffer plate and the partition plate through the round hole, the flowing direction of the buffer solution is opposite to the moving direction of the buffer plate, the pressure of water flow can reduce the moving speed of the buffer plate, thereby playing a certain buffering role on the buffer plate, can cushion the piston promptly, avoid the piston to remove and violently take place to damage, in addition when the buffer board removes, can drive and remove with buffer board fixed connection's cylinder and limiting plate, thereby is elongated with limiting plate fixed connection's first spring, when the piston removes when keeping away from the buffer block, first spring shrink can drive the buffer board and reset to this can carry out next buffering.

Preferably, the right side of the outer surface of the partition plate is symmetrically and fixedly connected with a first magnet, the left side of the outer surface of the piston is symmetrically and fixedly connected with a second magnet, and the magnetism of the first magnet is the same as that of the second magnet.

The during operation, when the piston begins with the buffer block contact, the translation rate of piston is still very fast, if not control, still can take place to damage when piston and buffer block begin to contact, through setting up first magnet and second magnet, when the piston removes to buffer block department, second magnet on the piston is close with first magnet on the baffle, because first magnet is the same with second magnet magnetism, first magnet and second magnet repulsion each other, and second magnet receives the effect of repulsion, can make the speed of piston reduce, avoid piston and buffer block to take place the striking, the phenomenon of damage appears.

Preferably, supplementary clearance mechanism includes threaded sleeve, a fixed section of thick bamboo and sponge piece, a fixed section of thick bamboo fixed mounting is in the surface right side intermediate position of hydro-cylinder body, threaded sleeve is installed to the surface screw thread of a fixed section of thick bamboo, just the piston rod all runs through threaded sleeve and a fixed section of thick bamboo, just the cavity intussuseption that threaded sleeve and a fixed section of thick bamboo formed is filled with the sponge piece, the sponge piece parcel is at the surface of piston rod.

In operation, when the piston rod removes to the hydro-cylinder body when outside, impurity in the air can be attached to the piston rod surface, when the piston rod returns to the hydro-cylinder body inside, can bring these impurity into the hydro-cylinder body inside, cause the loss of hydro-cylinder body, through the surface parcel sponge piece at the piston rod, when the piston rod returns to the hydro-cylinder body inside, the sponge piece can clean the impurity on piston rod surface totally, avoid impurity to enter into the hydro-cylinder body inside, prevent the loss of hydro-cylinder body, in addition, through setting up threaded sleeve and solid fixed cylinder, when needs change the sponge piece, only need rotate threaded sleeve, make threaded sleeve and solid fixed cylinder separation, take out the sponge piece from solid fixed cylinder, again with new sponge piece fill in can.

Preferably, the fixed cylinder inner surface has been seted up the spout, the inside movable plate that is provided with of fixed cylinder, movable plate slidable mounting is inside the spout, just movable plate surface right side supports the sponge piece, movable plate surface left side symmetry fixed mounting has the second spring, the one end and the fixed cylinder fixed connection that the movable plate was kept away from to the second spring.

The during operation is changing the sponge piece, because the sponge piece is inside fixed section of thick bamboo, is not convenient for take out, through setting up movable plate, second spring and spout, when the sponge piece is installed in fixed section of thick bamboo, when the threaded sleeve screwed, the second spring was in the compression form, when needs are changed the sponge piece, unscrewed threaded sleeve, the extension of second spring promoted the movable plate and moves along the spout, thereby the movable plate can be released the sponge piece, is convenient for take out the sponge piece and change.

Preferably, the right side of the outer surface of the moving plate is symmetrically and fixedly connected with ejector pins, and the ejector pins are inserted into the sponge block.

During operation, when changing new sponge piece, because the removal of movable plate makes the space in the fixed cylinder less, be not convenient for fill in the sponge piece or drop easily when filling in the sponge piece, through setting up the thimble, when changing new sponge piece, only need with the sponge piece cartridge on the thimble can, screw up the threaded sleeve at last, along with the threaded sleeve rotates the propulsion, sponge piece and movable plate all remove to the fixed cylinder.

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

1. according to the invention, through the arrangement of the filter plate, metal impurities are prevented from entering between the guide sleeve and the piston rod, the phenomenon that the friction force between the piston rod and the guide sleeve is too large, a large amount of heat is generated, and the hydraulic oil is thickened is prevented, in addition, scratches on the surfaces of the piston rod and the guide sleeve are avoided, the sealing property between the piston rod and the guide sleeve is ensured, and the service life is prolonged.

2. The invention can treat the impurities accumulated on the surface of the filter plate by arranging a series of structures such as the telescopic cylinder, the fixed seat, the air passage and the like, thereby avoiding the impurities from blocking the filter plate and influencing the filtering performance of the filter plate.

Drawings

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

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

FIG. 3 is a structural view of the cleaning mechanism of the present invention;

FIG. 4 is a structural view of the cushioning mechanism of the present invention;

FIG. 5 is a structural view of the auxiliary cleaning mechanism of the present invention.

In the figure: 1. an oil cylinder body; 2. a piston rod; 3. a first oil fill port; 4. a second oil fill port; 5. a piston; 6. a cleaning mechanism; 61. a telescopic cylinder; 62. a fixed seat; 63. pushing the plate; 64. an air cavity; 65. filtering the plate; 66. an airway; 7. a buffer mechanism; 71. a buffer block; 72. a partition plate; 73. connecting columns; 74. a buffer plate; 75. a circular hole; 76. a cylinder; 77. a first spring; 78. a limiting plate; 8. an auxiliary cleaning mechanism; 81. a threaded sleeve; 82. a fixed cylinder; 83. a sponge block; 9. a guide sleeve; 10. a first magnet; 11. a second magnet; 12. moving the plate; 13. a second spring; 14. a chute; 15. a thimble; 16. a dust-proof cover.

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 is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, 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.

Referring to fig. 1 to 5, the present invention provides a technical solution:

a servo hydraulic oil cylinder is shown in figures 1 to 3 and comprises an oil cylinder body 1, wherein a guide sleeve 9 is fixedly arranged on the right side of the inner surface of the oil cylinder body 1, a piston 5 is slidably arranged in the oil cylinder body 1, a piston rod 2 is fixedly connected to the middle position of the right side of the outer surface of the piston 5, one end, far away from the piston 5, of the piston rod 2 penetrates through the guide sleeve 9 and is fixedly connected with the oil cylinder body 1 and a dustproof sleeve 16, a first oil filling port 3 and a second oil filling port 4 are symmetrically and fixedly arranged on two sides of the outer surface of the oil cylinder body 1, a cleaning mechanism 6 is arranged on the left side of the outer surface of the guide sleeve 9, and a buffer mechanism 7 capable of reducing impact is arranged on the left side of the inner surface of the oil cylinder body 1;

the cleaning mechanism 6 comprises a telescopic cylinder 61, a fixed seat 62, a push plate 63, an air cavity 64, a filter plate 65 and an air channel 66, wherein the fixed seat 62 and the telescopic cylinder 61 are both sleeved on the outer surface of the piston rod 2 and have a gap with the piston rod 2, the right side of the outer surface of the fixed seat 62 is fixedly connected with the guide sleeve 9, the telescopic cylinder 61 is fixedly arranged on the left side of the outer surface of the fixed seat 62, the filter plate 65 is fixedly connected with the inner surface of the fixed seat 62 at a position close to the telescopic cylinder 61, the push plate 63 is slidably arranged on the inner surface of the fixed seat 62 at a position in the right side direction of the filter plate 65, the push plate 63, the piston rod 2 and the air cavity 64 are in sliding seal, the air cavity 64 is formed among the right side of the outer surface of the push plate 63, the inner surface of the fixed seat 62 and the outer surface of the piston rod 2, the air channel 66 is symmetrically arranged in the fixed seat 62, and one end of the air channel 66 is communicated with the air cavity 64, the other end of the air passage 66 is communicated with the telescopic cylinder 61, and the middle position of the right side of the outer surface of the oil cylinder body 1 is provided with an auxiliary cleaning mechanism 8.

When the hydraulic oil filter device works, the piston rod 2 can rub the guide sleeve 9 when moving, however, if lubricating oil with metal impurities attached to the surface of the piston rod 2 enters the guide sleeve 9, the friction force between the piston rod 2 and the guide sleeve 9 is increased, a large amount of heat is generated, the hydraulic oil becomes viscous and affects the flow rate of the hydraulic oil, in addition, the impurities can scratch the surfaces of the piston rod 2 and the guide sleeve 9, the sealing performance between the piston rod 2 and the guide sleeve 9 is affected, and the service life is shortened, by arranging the cleaning mechanism 6, the filter plate 65 can filter the hydraulic oil of the oil cylinder body 1, so that the metal impurities in the hydraulic oil are retained on the left side of the outer surface of the filter plate 65, the filtered hydraulic oil enters a space formed by the right side of the outer surface of the filter plate 65 and the left side of the outer surface of the push plate 63, and the piston rod 2 enters the cavity after passing through the filter plate 65, clean hydraulic oil in the cavity is attached to the surface of the piston rod 2, so that metal impurities are prevented from entering between the guide sleeve 9 and the piston rod 2, in addition, the filtered metal impurities are attached to the surface of the filter plate 65, so that the filtering performance of the filter plate 65 is deteriorated, through the arrangement of a series of structures such as the telescopic cylinder 61, the fixed seat 62 and the air passage 66, when the piston 5 moves to one side of the telescopic cylinder 61, the telescopic cylinder 61 is extruded and contracted by the piston 5, gas in the piston 5 can enter the air cavity 64 through the air passage 66, the volume of the gas in the air cavity 64 is increased, so that the push plate 63 moves towards the direction close to the filter plate 65, hydraulic oil in a space formed by the right side of the outer surface of the filter plate 65 and the left side of the outer surface of the push plate 63 is extruded to move towards one side of the filter plate 65, so that impurities accumulated on the surface of the filter plate 65 are dispersed, so that the filtering performance of the filter plate 65 can be improved, through the arrangement of the filter plate 65, the filter plate structure has the advantages that metal impurities are prevented from entering between the guide sleeve 9 and the piston rod 2, the phenomenon that the friction force between the piston rod 2 and the guide sleeve 9 is too large and a large amount of heat is generated to enable hydraulic oil to become viscous is avoided, in addition, scratches on the surfaces of the piston rod 2 and the guide sleeve 9 are avoided, the sealing performance between the piston rod 2 and the guide sleeve 9 is guaranteed, and the service life is prolonged.

As an embodiment of the present invention, as shown in fig. 4, the buffer mechanism 7 includes a buffer block 71, a partition plate 72, a connecting column 73, a buffer plate 74, a circular hole 75, a cylinder 76, a first spring 77, and a limit plate 78, the partition plate 72 is fixedly installed on the left side of the inner surface of the cylinder body 1, a buffer solution is filled in a cavity formed between the left side of the outer surface of the partition plate 72 and the cylinder body 1, the buffer plate 74 is slidably installed in the cavity, the circular hole 75 is formed in the surface of the buffer plate 74, the connecting column 73 is fixedly connected to the middle position of the outer surface of the buffer plate 74, one end of the connecting column 73 far from the buffer plate 74 penetrates through the partition plate 72 and is fixedly connected to the buffer block 71, the cylinders 76 are symmetrically and fixedly connected to the left side of the outer surface of the buffer plate 74, one ends of the cylinders 76 far from the buffer plate 74 penetrate through the cylinder body 1 and are fixedly connected to the limit plate 78, the first spring 77 is sleeved on the outer surface of the cylinders 76, one end of the first spring 77 is fixedly connected with a limit plate 78, and the other end of the limit plate 78 is fixedly connected with the oil cylinder body 1.

During operation, although the piston 5 can be buffered by the telescopic cylinder 61, because the piston 5 performs reciprocating motion, when the piston 5 moves in a direction away from the telescopic cylinder 61, the telescopic cylinder 61 cannot buffer the piston 5, the piston 5 can collide with the end of the cylinder body 1, and the piston 5 and the cylinder body 1 are damaged, by the buffer mechanism 7, when the piston 5 moves in a direction away from the telescopic cylinder 61, the piston 5 pushes the buffer block 71 to move in a direction close to the partition plate 72, the connecting column 73 fixedly connected with the buffer block 71 and the buffer plate 74 move along with the buffer block 71, however, when the buffer plate 74 moves, the buffer solution in the space formed by the left side of the outer surface of the buffer plate 74 and the cylinder body 1 enters the space formed by the buffer plate 74 and the partition plate 72 through the round hole 75, and the flowing direction of the buffer solution is opposite to the moving direction of the buffer plate 74, the pressure of rivers can reduce the speed that buffer board 74 removed, thereby can play certain cushioning effect to buffer board 74, can cushion piston 5 promptly, avoid piston 5 to remove and violently take place to damage, in addition when buffer board 74 removes, can drive the cylinder 76 and the limiting plate 78 with buffer board 74 fixed connection and remove, thereby elongated with limiting plate 78 fixed connection's first spring 77, when piston 5 removes to keeping away from buffer block 71, the shrink of first spring 77 can drive buffer board 74 and reset, with this can carry out next buffering.

As one embodiment of the present invention, as shown in fig. 2, first magnets 10 are symmetrically and fixedly connected to the right side of the outer surface of the partition plate 72, second magnets 11 are symmetrically and fixedly connected to the left side of the outer surface of the piston 5, and the first magnets 10 and the second magnets 11 have the same magnetism.

During operation, when piston 5 and buffer 71 contact when beginning, the moving speed of piston 5 is still very fast, if not controlled, still can take place to damage when piston 5 and buffer 71 begin to contact, through setting up first magnet 10 and second magnet 11, when piston 5 removed buffer 71 department, second magnet 11 on the piston 5 was close with first magnet 10 on the baffle 72, because first magnet 10 is the same with second magnet 11 magnetism, first magnet 10 and second magnet 11 repel each other, and second magnet 11 receives the effect of repulsion, can make the speed of piston 5 reduce, avoid piston 5 and buffer 71 to take place the striking, the phenomenon of damage appears.

As an embodiment of the present invention, as shown in fig. 5, the auxiliary cleaning mechanism 8 includes a threaded sleeve 81, a fixed cylinder 82 and a sponge block 83, the fixed cylinder 82 is fixedly installed at the middle position of the right side of the outer surface of the oil cylinder body 1, the threaded sleeve 81 is installed on the outer surface of the fixed cylinder 82 in a threaded manner, the piston rod 2 penetrates through the threaded sleeve 81 and the fixed cylinder 82, a cavity formed by the threaded sleeve 81 and the fixed cylinder 82 is filled with the sponge block 83, and the sponge block 83 is wrapped on the outer surface of the piston rod 2.

In operation, when the piston rod 2 moves to the outside of the oil cylinder body 1, impurities in the air can be attached to the surface of the piston rod 2, when the piston rod 2 returns to the inside of the oil cylinder body 1, the impurities can be brought into the inside of the oil cylinder body 1, the loss of the oil cylinder body 1 is caused, the sponge block 83 is wrapped on the outer surface of the piston rod 2, when the piston rod 2 returns to the inside of the oil cylinder body 1, the impurities on the surface of the piston rod 2 can be wiped completely by the sponge block 83, the impurities are prevented from entering the inside of the oil cylinder body 1, the loss of the oil cylinder body 1 is prevented, in addition, by arranging the threaded sleeve 81 and the fixed cylinder 82, when the sponge block 83 needs to be replaced, the threaded sleeve 81 is only required to be rotated, the threaded sleeve 81 is separated from the fixed cylinder 82, the sponge block 83 is taken out from the fixed cylinder 82, and then the new sponge block 83 is stuffed in.

As an embodiment of the present invention, as shown in fig. 5, a sliding groove 14 is formed on an inner surface of the fixed cylinder 82, a moving plate 12 is disposed inside the fixed cylinder 82, the moving plate 12 is slidably mounted inside the sliding groove 14, a sponge block 83 is abutted on a right side of an outer surface of the moving plate 12, second springs 13 are symmetrically and fixedly mounted on a left side of the outer surface of the moving plate 12, and one end of each second spring 13, which is far away from the moving plate 12, is fixedly connected to the fixed cylinder 82.

In operation, when changing the sponge piece 83, because the sponge piece 83 is inside the fixed cylinder 82, be not convenient for take out, through setting up the movable plate 12, second spring 13 and spout 14, when the sponge piece 83 is installed in the fixed cylinder 82, when the screw sleeve 81 screws, the second spring 13 is in the compression form, when needs are changed the sponge piece 83, unscrew the screw sleeve 81, the extension of second spring 13 promotes the movable plate 12 and moves along spout 14, thereby the movable plate 12 can be released the sponge piece 83, be convenient for take out the sponge piece 83 and change.

As an embodiment of the present invention, as shown in fig. 5, ejector pins 15 are symmetrically and fixedly connected to the right side of the outer surface of the moving plate 12, and the ejector pins 15 are inserted into the sponge block 83.

During operation, when changing new sponge piece 83, because the removal of movable plate 12 makes the space in the fixed cylinder 82 less, be not convenient for fill in sponge piece 83 or drop easily when filling in sponge piece 83, through setting up thimble 15, when changing new sponge piece 83, only need with sponge piece 83 cartridge on thimble 15 can, screw up threaded sleeve 81 at last, along with threaded sleeve 81 rotates the propulsion, sponge piece 83 and movable plate 12 all remove to fixed cylinder 82.

The working principle is as follows: the piston rod 2 can rub against the guide sleeve 9 when moving, however, if lubricating oil with metal impurities attached to the surface of the piston rod 2 enters the guide sleeve 9, the friction force between the piston rod 2 and the guide sleeve 9 is increased, a large amount of heat is generated, the heat can make the hydraulic oil become viscous, and the flow rate of the hydraulic oil is affected, in addition, the impurities can make scratches appear on the surfaces of the piston rod 2 and the guide sleeve 9, the sealing performance between the piston rod 2 and the guide sleeve 9 is affected, and the service life is shortened, in the invention, by arranging the cleaning mechanism 6, the filter plate 65 can filter the hydraulic oil of the oil cylinder body 1, so that the metal impurities in the hydraulic oil are retained on the left side of the outer surface of the filter plate 65, the filtered hydraulic oil enters a space formed by the right side of the outer surface of the filter plate 65 and the left side of the outer surface of the push plate 63, and the piston rod 2 enters the cavity after passing through the filter plate 65, clean hydraulic oil in the cavity is attached to the surface of the piston rod 2, so that metal impurities are prevented from entering between the guide sleeve 9 and the piston rod 2, in addition, the filtered metal impurities are attached to the surface of the filter plate 65, so that the filtering performance of the filter plate 65 is deteriorated, through the arrangement of a series of structures such as the telescopic cylinder 61, the fixed seat 62 and the air passage 66, when the piston 5 moves to one side of the telescopic cylinder 61, the telescopic cylinder 61 is extruded and contracted by the piston 5, gas in the piston 5 can enter the air cavity 64 through the air passage 66, the volume of the gas in the air cavity 64 is increased, so that the push plate 63 moves towards the direction close to the filter plate 65, hydraulic oil in a space formed by the right side of the outer surface of the filter plate 65 and the left side of the outer surface of the push plate 63 is extruded to move towards one side of the filter plate 65, so that impurities accumulated on the surface of the filter plate 65 are dispersed, so that the filtering performance of the filter plate 65 can be improved, through the arrangement of the filter plate 65, the filter plate structure has the advantages that metal impurities are prevented from entering between the guide sleeve 9 and the piston rod 2, the phenomenon that the friction force between the piston rod 2 and the guide sleeve 9 is too large and a large amount of heat is generated to enable hydraulic oil to become viscous is avoided, in addition, scratches on the surfaces of the piston rod 2 and the guide sleeve 9 are avoided, the sealing performance between the piston rod 2 and the guide sleeve 9 is guaranteed, and the service life is prolonged.

The electric elements in the document are electrically connected with an external main controller and 220V mains supply through a transformer, the main controller can be a conventional known device controlled by a computer and the like, the product model provided by the invention is only used according to the structural characteristics of the product, the product can be adjusted and modified after being purchased, so that the product is more matched with and accords with the technical scheme of the invention, the product model is a technical scheme of the optimal application of the technical scheme, the product model can be replaced and modified according to the required technical parameters, and the product model is familiar to the technical personnel in the field, so that the technical scheme provided by the invention can clearly obtain the corresponding use effect.

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 servo hydraulic cylinder, includes hydro-cylinder body (1), its characterized in that: the right side of the inner surface of the oil cylinder body (1) is fixedly provided with a guide sleeve (9), a piston (5) is slidably arranged in the oil cylinder body (1), a piston rod (2) is fixedly connected to the middle position of the right side of the outer surface of the piston (5), one end, far away from the piston (5), of the piston rod (2) penetrates through the guide sleeve (9) and is fixedly connected with the oil cylinder body (1) and a dustproof sleeve (16), a first oil filling port (3) and a second oil filling port (4) are symmetrically and fixedly arranged on two sides of the outer surface of the oil cylinder body (1), the left side of the outer surface of the guide sleeve (9) is provided with a cleaning mechanism (6), and the left side of the inner surface of the oil cylinder body (1) is provided with a buffer mechanism (7) capable of reducing impact;

the cleaning mechanism (6) comprises a telescopic cylinder (61), a fixed seat (62), a push plate (63), an air cavity (64), a filter plate (65) and an air channel (66), wherein the fixed seat (62) and the telescopic cylinder (61) are sleeved on the outer surface of the piston rod (2) and a gap is reserved between the fixed seat (62) and the piston rod (2), the right side of the outer surface of the fixed seat (62) is fixedly connected with the guide sleeve (9), the telescopic cylinder (61) is fixedly arranged on the left side of the outer surface of the fixed seat (62), the position, close to the telescopic cylinder (61), of the inner surface of the fixed seat (62) is fixedly connected with the filter plate (65), the push plate (63) is slidably arranged on the inner surface of the fixed seat (62) in the right side direction of the filter plate (65), the push plate (63) is slidably sealed with the piston rod (2) and the air cavity (64), and the air cavity (64) is formed between the right side of the outer surface of the push plate (63), the inner surface of the fixed seat (62) and the outer surface of the piston rod (2), air passages (66) are symmetrically formed in the fixed seat (62), one end of each air passage (66) is communicated with the air cavity (64), the other end of each air passage (66) is communicated with the telescopic cylinder (61), and an auxiliary cleaning mechanism (8) is arranged in the middle of the right side of the outer surface of the oil cylinder body (1).

2. A servo hydraulic ram according to claim 1 wherein: buffer gear (7) are including buffer block (71), baffle (72), spliced pole (73), buffer board (74), round hole (75), cylinder (76), first spring (77) and limiting plate (78), baffle (72) fixed mounting is in hydro-cylinder body (1) internal surface left side, be full of the buffer solution in the cavity that baffle (72) surface left side and hydro-cylinder body (1) formed, just slidable mounting has buffer board (74) in the cavity, round hole (75) have been seted up on buffer board (74) surface intermediate position fixedly connected with spliced pole (73), baffle (72) and fixedly connected with buffer block (71) are run through to the one end that buffer board (74) were kept away from in spliced pole (73), buffer board (74) surface left side symmetry fixedly connected with cylinder (76), the one end that buffer board (74) were kept away from in cylinder (76) all runs through hydro-cylinder body (1) and fixedly connected with limiting plate (78), (78) 78) The outer surface of the cylinder (76) is sleeved with a first spring (77), one end of the first spring (77) is fixedly connected with a limiting plate (78), and the other end of the limiting plate (78) is fixedly connected with the oil cylinder body (1).

3. A servo hydraulic ram according to claim 2 wherein: baffle (72) surface right side symmetry fixedly connected with first magnet (10), piston (5) surface left side symmetry fixedly connected with second magnet (11), just first magnet (10) are the same with the magnetism of second magnet (11).

4. A servo hydraulic ram as claimed in claim 1 wherein: supplementary clearance mechanism (8) are including threaded sleeve (81), solid fixed cylinder (82) and sponge piece (83), gu fixed cylinder (82) fixed mounting is in the surface right side intermediate position of hydro-cylinder body (1), threaded sleeve (81) are installed to the surface screw thread of solid fixed cylinder (82), just piston rod (2) all run through threaded sleeve (81) and solid fixed cylinder (82), just the cavity intussuseption that threaded sleeve (81) and solid fixed cylinder (82) formed is filled with sponge piece (83), sponge piece (83) parcel is at the surface of piston rod (2).

5. A servo hydraulic ram according to claim 4 wherein: spout (14) have been seted up to fixed cylinder (82) internal surface, fixed cylinder (82) inside is provided with movable plate (12), movable plate (12) slidable mounting is inside spout (14), just movable plate (12) surface right side supports sponge piece (83), movable plate (12) surface left side symmetry fixed mounting has second spring (13), the one end and the fixed cylinder (82) fixed connection of movable plate (12) are kept away from in second spring (13).

6. A servo hydraulic ram according to claim 5 wherein: ejector pins (15) are symmetrically and fixedly connected to the right side of the outer surface of the moving plate (12), and the ejector pins (15) are inserted into the sponge block (83).