CN217354999U

CN217354999U - Self-suction type sealed lubrication disc spring hydraulic cylinder structure and braking device

Info

Publication number: CN217354999U
Application number: CN202220778469.8U
Authority: CN
Inventors: 刘梅红; 张虹源; 徐振宇
Original assignee: Xuzhou XCMG Hydraulics Co Ltd
Current assignee: Xuzhou XCMG Hydraulics Co Ltd
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-09-02
Anticipated expiration: 2032-04-06

Abstract

The utility model discloses a self-suction type sealing lubrication disc spring hydraulic cylinder structure and a brake device in the technical field of brake devices, wherein the self-suction type sealing lubrication disc spring hydraulic cylinder structure comprises a hydraulic cylinder unit, a disc spring unit and a lubrication unit; the hydraulic cylinder unit comprises a cylinder body and a guide sleeve arranged on the cylinder body, a piston rod is connected with the guide sleeve in a sliding mode, a piston is arranged at one end of the piston rod, and the piston is connected with the cylinder body in a sliding mode; the disc spring unit comprises a disc spring sleeve with one end connected with the guide sleeve, and the disc spring guide rod is connected with the disc spring sleeve in a sliding manner; one end of the disc spring guide rod is provided with a disc spring baffle, and a plurality of groups of disc springs are sleeved on the disc spring guide rod and are positioned between the disc spring baffle and the disc spring sleeve; the disc spring guide rod is coaxially connected with the piston rod; the lubricating unit comprises an oil can which is communicated with a rod cavity of the hydraulic unit through an oil pipe. The utility model discloses pneumatic cylinder unit and dish spring unit are connected with independent assembly separately, have reduced the processing degree of difficulty of pneumatic cylinder, have promoted the structural stability and the reliability of stopper.

Description

Self-suction type sealed lubrication disc spring hydraulic cylinder structure and braking device

Technical Field

The utility model belongs to the technical field of arresting gear, concretely relates to from inhaling formula sealed lubrication dish spring pneumatic cylinder structure and arresting gear.

Background

The hydraulic cylinder is used as an actuating element of a hydraulic system, and has the characteristics of simple transmission structure, flexible action, capability of transferring acting force and the like, the belleville spring has high bearing performance in a small space range and is combined with the hydraulic cylinder to be applied to a belt brake, the conventional hydraulic brake adopts hydraulic braking, the spring is reset, hydraulic oil output by a master cylinder drives the hydraulic brake, the pressure and the flow of the hydraulic oil can influence the abrasion loss of a brake shoe, the requirement of automatic compensation and maximum braking force can be met only by frequently adjusting the power-assisted master cylinder, and the safety of the brake is reduced.

In the prior art, a hydraulic system is mainly used for braking, a disc spring force is used as a compensation force, a braking reset force structure is complex, a hydraulic brake in the braking system is in a braking state for a long time, a special pressure maintaining system needs to be designed, and once a pressure maintaining device fails, the hydraulic brake has no braking problem, and the safety is low; most of hydraulic brakes with disc spring structures are disc spring systems and hydraulic systems integrated, so that the instability and the processing difficulty of the hydraulic cylinder are increased; the pressure end is not needed to be directly connected to the hydraulic system, so that the structural complexity of the hydraulic system is increased; the piston rod and the guide rod are separated and not connected, so that the structural stability is poor, and the piston rod and the guide rod are integrally manufactured, so that the manufacturing cost is high, and the processing difficulty is high.

SUMMERY OF THE UTILITY MODEL

For solving not enough among the prior art, the utility model provides a from inhaling lubricated dish spring pneumatic cylinder structure of formula seal and arresting gear, the pneumatic cylinder unit is connected with independent assembly with dish spring unit separately, has reduced the processing degree of difficulty of pneumatic cylinder, gives the pretightning force when adopting the installation of dish spring and reaches the function of stopper locking, stretches out the function that the compression dish spring realization anchor machine stopper was opened through pneumatic cylinder pressurization piston rod, and lubricates through adopting external seal, has promoted the structural stability and the reliability of stopper.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

in a first aspect, a self-suction type sealing and lubricating disc spring hydraulic cylinder structure is provided, and comprises a hydraulic cylinder unit, a disc spring unit and a lubricating unit; the hydraulic cylinder unit comprises a cylinder body and a guide sleeve arranged on the cylinder body, a piston rod is connected with the guide sleeve in a sliding mode, a piston is arranged at one end, located in the cylinder body, of the piston rod, and the piston is connected with the cylinder body in a sliding mode; the disc spring unit comprises a disc spring sleeve with one end connected with the guide sleeve, and the disc spring guide rod is connected with the disc spring sleeve in a sliding manner; a disc spring baffle is arranged at one end of the disc spring guide rod, which is positioned in the disc spring sleeve, and a plurality of groups of disc springs are sleeved on the disc spring guide rod and are positioned between the disc spring baffle and the disc spring sleeve; the disc spring guide rod is coaxially connected with the piston rod; the lubricating unit comprises an oil can which is communicated with the rod cavity of the hydraulic unit through an oil pipe.

Further, a liquid level meter is installed on the oil can.

Further, an air filter is installed on the oil can.

Further, an oil drain valve is installed on the oil can.

Further, the oil pot is installed on the disc spring sleeve, and the installation position of the bottom of the disc spring sleeve is higher than that of the guide sleeve.

Further, the cylinder body is connected with the guide sleeve through a bolt; the disc spring sleeve is connected with the guide sleeve through a bolt.

Further, a piston rod seal is arranged on the guide sleeve and used for preventing lubricating oil in the rod cavity from leaking along the piston rod.

Further, the piston rod is in threaded connection with the disc spring guide rod.

Furthermore, a hexagonal structure is arranged on the piston rod, and a hexagonal through hole in the disc spring baffle is matched with the hexagonal structure in the piston rod, so that the disc spring baffle is connected between the piston rod and the disc spring guide rod; the disc spring baffle is also provided with a screw hole, and the fastening screw is matched with the screw hole and is abutted against the disc spring guide rod.

In a second aspect, a braking device is provided, which comprises the self-priming sealed lubrication disc spring hydraulic cylinder structure of the first aspect, wherein the cylinder body is hinged with a set installation position; the piston rod is located the one end outside the cylinder body is articulated with the lever, the lever is articulated with the stiff end and the expansion end of brake band subassembly respectively.

Compared with the prior art, the utility model discloses the beneficial effect who reaches:

(1) the hydraulic cylinder unit and the disc spring unit are respectively connected in an independent assembly form, so that the processing difficulty of the hydraulic cylinder is reduced, and the structural stability and reliability of the brake are improved;

(2) the utility model has the advantages that the oil pot is communicated with the rod cavity to form an independent self-suction type sealing lubrication system, thereby prolonging the service life of sealing and simplifying the hydraulic system of the equipment;

(3) the utility model discloses the piston rod is connected stopping locking structure with dish spring guide arm and has promoted the machinability of spare part, has reduced material cost, has promoted the reliability of connection.

Drawings

Fig. 1 is a schematic cross-sectional view of a self-priming sealed lubrication disc spring hydraulic cylinder structure provided in an embodiment of the present invention;

FIG. 2 is a schematic view of the connection relationship between the disc spring baffle and the disc spring guide rod in the embodiment of the present invention;

FIG. 3 is a left side view of FIG. 2;

fig. 4 is a schematic view of the overall structure of a self-suction type sealing and lubricating disc spring hydraulic cylinder structure provided in the embodiment of the present invention;

fig. 5 is a schematic structural diagram of a braking device according to an embodiment of the present invention;

in the figure: 101. a cylinder body; 102. a guide sleeve; 103. a piston rod; 104. a piston; 105. a rod cavity; 106. the piston rod is sealed; 107. a first bolt; 108. a first earring; 109. a rodless cavity; 201. a disc spring sleeve; 202. a disc spring guide rod; 203. a disc spring baffle; 204. a disc spring; 205. tightening the screw; 206. a second bolt; 207. a second earring; 301. an oil can; 302. a hose; 303. an air cleaner; 304. an oil discharge valve; 305. a liquid level meter; 4. a lever; 5. a brake band assembly; 501. a fixed end; 502. a movable end; 503. a connecting rod.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

The first embodiment is as follows:

as shown in fig. 1 to 4, a self-suction type sealed lubrication disc spring hydraulic cylinder structure comprises a hydraulic cylinder unit, a disc spring unit and a lubrication unit.

The hydraulic cylinder unit comprises a cylinder body 101 and a guide sleeve 102 arranged on the cylinder body 101, a piston rod 103 is connected with the guide sleeve 102 in a sliding mode, a piston 104 is arranged at one end, located in the cylinder body 101, of the piston rod 103, and the piston 104 is connected with the cylinder body 101 in a sliding mode.

The cylinder body 101 is connected with the guide sleeve 102 through a first bolt 107; the joint of the cylinder body 101 and the guide sleeve 102 is provided with a sealing member for preventing hydraulic oil from leaking, and the cylinder body 101 and the guide sleeve 102 form an independent hydraulic space.

A piston rod seal 106 is provided on the guide sleeve 102 for preventing the lubricating oil in the rod chamber 105 from leaking along the piston rod 103.

A first lug 108 is provided at the bottom of the cylinder block 101, and the first lug 108 is hinged with a designated mounting position to support the hydraulic cylinder unit.

The disc spring unit comprises a disc spring sleeve 201, one end of the disc spring sleeve 201 is connected with the guide sleeve 102, and the disc spring guide rod 202 is connected with the disc spring sleeve 201 in a sliding mode; a disc spring baffle plate 203 is arranged at one end of the disc spring guide rod 202, which is positioned in the disc spring sleeve 201, a plurality of groups of disc springs 204 are combined and then sleeved on the disc spring guide rod 202 and positioned between the disc spring baffle plate 203 and the disc spring sleeve 201, and the disc spring guide rod is limited by a connecting structure between the disc spring sleeve 201 and the hydraulic cylinder unit to form a disc spring force space; the disc spring guide rod 202 is coaxially connected with the piston rod 103.

In this embodiment, the piston rod 103 is provided with an external thread, and the disc spring guide rod 202 is provided with an internal thread matched with the external thread on the piston rod 103, so that the piston rod 103 is in threaded connection with the disc spring guide rod 202. The piston rod 103 is provided with a hexagonal structure, and a hexagonal through hole on the disc spring baffle plate 203 is matched with the hexagonal structure on the piston rod 103, so that the disc spring baffle plate 203 is connected between the piston rod 103 and the disc spring guide rod 202; the disc spring baffle 203 is also provided with a screw hole, and the fastening screw 205 is matched with the screw hole and is abutted against the disc spring guide rod 202, so that the threaded connection between the piston rod 103 and the disc spring guide rod 202 is prevented from loosening.

The disc spring sleeve 201 is connected to the guide sleeve 102 by a second bolt 206.

The lubricating unit comprises an oil can 301, the oil can 301 being in communication with the rod chamber 105 of the hydraulic unit via an oil pipe (in this embodiment a hose 302 is used). The oil pot 301 is mounted on the disc spring sleeve 201 through a clip (or a bolt), and the mounting position of the bottom of the disc spring sleeve 201 is higher than that of the guide sleeve 102, so as to ensure that the rod cavity 105 has enough lubricating oil.

In this embodiment, the oil can 301 is provided with the liquid level meter 305, so that the amount of lubricating oil in the oil can 301 can be checked conveniently.

The air filter 303 is installed on the oil can 301, so that air can conveniently enter and exit the oil can 301 when the volume of the lubricating oil in the oil can 301 changes, the lubricating oil can not smoothly enter the rod cavity 105 due to the fact that the vacuum phenomenon is avoided, and meanwhile, impurities in the air can be prevented from entering the oil can 301 to pollute the lubricating oil.

An oil drain valve 304 is installed on the oil can 301 for draining the lubricating oil in the oil can 301 when necessary.

The working principle is as follows: as shown in fig. 5, the cylinder 101 is hinged to a set mounting position by a first ear ring 108; the end of the piston rod 103 outside the cylinder 101 is provided with a second ear ring 207, the second ear ring 207 is hinged with the lever 4 through a joint bearing, the lever 4 is respectively hinged with a fixed end 501 and a movable end 502 of the brake band assembly 5, and a connecting rod 503 is arranged between the lever 4 and the movable end 502 of the brake band assembly 5.

As shown in fig. 1 and 5, when the rodless cavity 109 of the hydraulic cylinder unit has no oil pressure, the disc spring 204 compresses the disc spring baffle 203 toward the rodless cavity 109 under the action of a pre-tightening force, the disc spring baffle 203 drives the disc spring guide rod 202 to retract into the hydraulic cylinder, the disc spring guide rod 202 pulls the connecting rod 503 through the second earring 207 and the knuckle bearing, the connecting rod 503 pulls the movable end 502 of the brake band assembly 5 downward, the brake band is tensioned, and the brake brakes; when the rodless cavity 109 has an oil pressure function, hydraulic oil enters the rodless cavity 109 from an oil port at the bottom of the cylinder, the piston 104 pushes the piston rod 103 and the disc spring guide rod 202 to extend out of the cylinder under the action of the oil pressure, the disc spring baffle 203 compresses the disc spring group, the hydraulic pressure is larger than the compressed disc spring force, the disc spring guide rod 202 pushes the lever 4 upwards through the knuckle bearing in the second earring 207, the lever 4 pushes the connecting rod 503, the connecting rod 503 pushes the brake band upwards through the movable end 502 of the brake band assembly 5, the brake band is loosened, and the brake is loosened.

In the whole working process, the rod cavity 105 has no hydraulic pressure, the dry friction exists in the piston rod seal 106 between the guide sleeve 102 and the piston rod 103, and therefore a system is needed to lubricate the seal at the position independently, in the embodiment, an oil can 301 is designed to lubricate the seal at the position, meanwhile, the hydraulic oil is supplemented and stored in the rod cavity 105, the oil can 301 is an independent hydraulic system and is not connected with a host system, the structure of the host system is simplified, the oil can 301 is communicated with the rod cavity 105 through a connecting hose 302 and is provided with a liquid level meter 305 to control the adding amount of the hydraulic oil, the air in the oil can 301 enters and exits when the self-priming is carried out between the rod cavity 105 and the oil can 301 through an air filter 303, and an oil discharge valve 304 is a ball valve and is used for replacing the hydraulic oil periodically.

The scheme is applied to the marine anchor machine or winch belt type brake system with high requirement on stability and long service life.

The disc spring structure and the hydraulic cylinder are respectively connected with the independent assemblies, so that the processing difficulty of the hydraulic cylinder is reduced, and the structural stability and reliability of the brake are improved; the rod cavity independent self-suction type sealing lubrication hydraulic system prolongs the service life of sealing and simplifies the equipment hydraulic system; the piston rod and guide rod connection anti-back locking structure improves the machinability of parts, reduces the material cost and improves the connection reliability. To sum up, the utility model has the advantages that stability and reliability are high, long service life, simple structure and low in production cost.

Example two:

based on the self-priming sealed lubrication disc spring hydraulic cylinder structure of the first embodiment, the first embodiment provides a braking device, which comprises the self-priming sealed lubrication disc spring hydraulic cylinder structure of the first embodiment, wherein a cylinder body 101 is hinged with a set installation position; the end of the piston rod 103 outside the cylinder 101 is hinged to the lever 4, and the lever 4 is hinged to the fixed end 501 and the movable end 502 of the brake band assembly respectively.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.

Claims

1. A self-suction type sealed lubrication disc spring hydraulic cylinder structure is characterized by comprising a hydraulic cylinder unit, a disc spring unit and a lubrication unit;

the hydraulic cylinder unit comprises a cylinder body (101) and a guide sleeve (102) arranged on the cylinder body (101), a piston rod (103) is connected with the guide sleeve (102) in a sliding mode, a piston (104) is arranged at one end, located in the cylinder body (101), of the piston rod (103), and the piston (104) is connected with the cylinder body (101) in a sliding mode;

the disc spring unit comprises a disc spring sleeve (201) with one end connected with the guide sleeve (102), and a disc spring guide rod (202) is connected with the disc spring sleeve (201) in a sliding manner; a disc spring baffle (203) is arranged at one end of the disc spring guide rod (202) positioned in the disc spring sleeve (201), and a plurality of groups of disc springs (204) are sleeved on the disc spring guide rod (202) and positioned between the disc spring baffle (203) and the disc spring sleeve (201); the disc spring guide rod (202) is coaxially connected with the piston rod (103);

the lubricating unit comprises an oil can (301), and the oil can (301) is communicated with the rod cavity (105) of the hydraulic cylinder unit through an oil pipe.

2. The self-priming, sealed and lubricated disc spring hydraulic cylinder structure according to claim 1, characterized in that a liquid level gauge (305) is mounted on the oil can (301).

3. The self-priming sealed lubricated disc spring hydraulic cylinder structure according to claim 1, wherein an air filter (303) is mounted on the oil can (301).

4. The self-priming sealed lubricated disc spring hydraulic cylinder structure according to claim 1, wherein an oil drain valve (304) is mounted on the oil can (301).

5. The self-priming sealed-lubricated disc spring hydraulic cylinder structure according to claim 1, characterized in that the oil pot (301) is mounted on the disc spring sleeve (201), and the mounting position of the bottom of the disc spring sleeve (201) is higher than that of the guide sleeve (102).

6. The self-priming sealed lubricated disc spring hydraulic cylinder structure according to claim 1, wherein the cylinder body (101) is bolted to the guide sleeve (102); the disc spring sleeve (201) is connected with the guide sleeve (102) through a bolt.

7. The self-priming sealed lubricated belleville spring hydraulic cylinder configuration of claim 1, wherein a piston rod seal (106) is provided on the guide sleeve (102) for preventing the leakage of the lubricant within the rod cavity (105) along the piston rod (103).

8. The self-priming sealed lubricated disc spring hydraulic cylinder structure according to claim 1, wherein the piston rod (103) is in threaded connection with the disc spring guide rod (202).

9. The self-priming sealed lubricated disc spring hydraulic cylinder structure according to claim 8, wherein a hexagonal structure is arranged on the piston rod (103), and a hexagonal through hole on the disc spring baffle (203) is matched with the hexagonal structure on the piston rod (103), so that the disc spring baffle (203) is connected between the piston rod (103) and the disc spring guide rod (202); the disc spring baffle (203) is also provided with a screw hole, and a set screw (205) is matched with the screw hole and is abutted against the disc spring guide rod (202).

10. A braking device, characterized in that, the braking device comprises the self-suction type sealed lubrication disc spring hydraulic cylinder structure of any claim 1 to 9, the cylinder body (101) is hinged with a set installation position; the piston rod (103) is located one end outside the cylinder body (101) is hinged to the lever (4), and the lever (4) is hinged to a fixed end (501) and a movable end (502) of the brake band assembly (5) respectively.