CN219081520U

CN219081520U - Hydraulic clamp

Info

Publication number: CN219081520U
Application number: CN202320409114.6U
Authority: CN
Inventors: 朴闰鹤
Original assignee: Shanghai Jingendi Hydraulic Equipment Co ltd
Current assignee: Shanghai Jingendi Hydraulic Equipment Co ltd
Priority date: 2023-03-07
Filing date: 2023-03-07
Publication date: 2023-05-26
Anticipated expiration: 2033-03-07

Abstract

The utility model relates to the technical field of hydraulic clamps, in particular to a hydraulic clamp. It is mainly to current fluid pressure type holder when to the drilling rod centre gripping, receives the influence of drilling rod easily, leads to the slips grip surface on the fluid pressure type holder to receive wearing and tearing, if wearing and tearing are serious then can influence the centre gripping effect to the drilling rod, seriously need change whole slips, comparatively extravagant problem, proposes following technical scheme: the hydraulic oil cylinder comprises a hydraulic oil cylinder body, wherein pressurizing mechanisms for pressurizing the inside of the hydraulic oil cylinder body are symmetrically arranged on two sides of the hydraulic oil cylinder body, and an oil pressing cavity is formed in the hydraulic oil cylinder body. According to the utility model, the clamping surface of the slip is protected while the existing drill rod is clamped through the friction increasing mechanism, the drill rod is prevented from rotating and wearing the clamping surface of the slip, and a worker can pertinently replace the friction increasing mechanism with serious wear, so that the whole slip is not required to be replaced, and the resource waste is reduced.

Description

Hydraulic clamp

Technical Field

The utility model relates to the technical field of hydraulic clamps, in particular to a hydraulic clamp.

Background

The drilling equipment refers to mechanical devices and equipment used for drilling construction under specific working conditions, and mainly comprises a drilling machine, a slurry pump, slurry purification equipment, a slurry stirrer, a drilling tower and the like; the existing hydraulic clamp holders are quite wide in application field, wherein the hydraulic clamp holders applied to drilling equipment are generally used for assisting the drilling equipment in fixing the position of a drill rod, and the drilling equipment is not prevented from driving the drill rod to rotate when the drill rod is fixed, so that the drill rod can conveniently perform drilling work.

However, when the existing hydraulic clamp holder clamps a drill rod, the existing hydraulic clamp holder is easily affected by the drill rod, so that the clamping surfaces of slips on the hydraulic clamp holder are worn, if the wear is serious, the clamping effect on the drill rod can be affected, the whole slips are seriously required to be replaced, and the hydraulic clamp holder is wasteful.

Disclosure of Invention

The utility model aims to solve the problems in the background art and provides a hydraulic clamp.

The technical scheme of the utility model is as follows: the utility model provides a fluid pressure type holder, includes the hydraulic cylinder body, the supercharging mechanism to this internal supercharging of hydraulic cylinder is installed to the bilateral symmetry of hydraulic cylinder body, the internal oil pressing chamber that has seted up of hydraulic cylinder, the oil pressing intracavity is provided with the piston, two the pushing end of piston all is connected with the slips semi-axis, two all install the slips that carry out the centre gripping to the clamping lever on the internal surface of slips semi-axis, be provided with the mechanism of adding friction to the slips clamping surface and protect on the clamping surface of slips, be provided with the oiling mouth on the both sides outer wall of hydraulic cylinder body, two the oiling mouth all communicates with the oil pressing chamber, the sealed lid of pneumatic cylinder and the sealed lid of lower pneumatic cylinder are installed respectively to the top and the bottom of hydraulic cylinder body.

Preferably, the pressurizing mechanism comprises a fixing frame, a filling machine is arranged in the fixing frame, and a first sealing gasket is arranged on the filling machine.

Preferably, one side of the first sealing gasket is fixedly connected with the outer wall of the hydraulic cylinder body, the output ends of the oil nozzle and the filling machine are both positioned at the middle part of the first sealing gasket, and the oil nozzle is communicated with the connecting end of the filling machine.

Preferably, a holding surface of the slip is provided with a holding groove, a bottom groove wall of the holding groove is provided with a threaded hole, and the friction increasing mechanism is arranged at the holding groove.

Preferably, the friction increasing mechanism comprises a bolt, wherein friction increasing blocks are welded at the top ends of the bolts, and the friction increasing blocks are in a hexagonal shape.

Preferably, the bottom of the bolt is located in the threaded hole, a second sealing washer and a disc spring are sleeved on the outer ring of the bolt, the disc spring is located in the placing groove, and the second sealing washer is located at the bottom of the friction increasing block.

Compared with the prior art, the utility model has the following beneficial technical effects:

1. according to the utility model, the filling machine is matched with the oil injection nozzle to inject hydraulic oil into the oil pressing cavity formed in the hydraulic oil cylinder body, so that the pressure oil pressing cavity is pressurized, two groups of pistons are pushed to move in the same direction, two slips are pushed to move in the same direction, the existing cylindrical drill rod inserted in the hydraulic oil cylinder body is clamped by the friction increasing mechanism, the purpose of clamping and fixing the drill rod is realized, meanwhile, under the action of a plurality of friction increasing mechanisms, the outer surface of the drill rod is prevented from directly contacting with the clamping surface of the slips, the clamping surface of the slips is further protected, the clamped drill rod is prevented from rotating to influence the clamping surface of the worn slips, meanwhile, when the friction increasing mechanism clamps the drill rod, the disc spring is matched with the second sealing gasket to play a role of buffering pressure, the clamping surface of the slips is prevented from being worn by the bolts, and a worker can take down the bolts from the clamping surface of the slips by rotating the bolts, and can change the bolts with serious abrasion in a targeted manner, and the worker is not required to replace the whole slips.

Drawings

FIG. 1 is an isometric schematic view of a hydraulic gripper;

FIG. 2 is a schematic elevational cross-sectional structure of FIG. 1;

fig. 3 is an enlarged schematic view of the structure at a in fig. 2.

Reference numerals: 1. a hydraulic cylinder body; 2. a pressurizing mechanism; 21. a fixing frame; 22. a filling machine; 23. a first sealing gasket; 3. a piston; 4. slip half shafts; 5. a slip; 6. a sealing cover of the upper hydraulic cylinder; 7. a lower hydraulic cylinder sealing cover; 8. a friction increasing mechanism; 81. a bolt; 82. a second sealing gasket; 83. a disc spring; 9. and an oil filling nozzle.

Detailed Description

The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.

Examples

As shown in fig. 1-3, the hydraulic clamp provided by the utility model comprises a hydraulic cylinder body 1, wherein oil injection nozzles 9 are symmetrically arranged on the outer walls of two sides of the hydraulic cylinder body 1, a pressure oil cavity is formed in the hydraulic cylinder body 1, and the two oil injection nozzles 9 are communicated with the pressure oil cavity, so that the hydraulic oil is injected into the pressure oil cavity through a piston 3 for pressurizing in the subsequent working.

Further, pressurizing mechanisms 2 for pressurizing the inside of the hydraulic cylinder body 1 are symmetrically arranged on two sides of the hydraulic cylinder body 1, each pressurizing mechanism 2 comprises a fixing frame 21, a filling machine 22 and a first sealing gasket 23, each fixing frame 21 is composed of a supporting plate and supporting legs, and the supporting legs are fixedly connected with the side walls of the hydraulic cylinder body 1 so as to support the hydraulic cylinder body 1 by matching the supporting plates; the filling machine 22 is arranged in the middle of the supporting plate, the first sealing gasket 23 is arranged on the output side of the filling machine 22, the output end of the filling machine 22 is positioned in the middle of the first sealing gasket 23, and one side of the first sealing gasket 23 is fixedly connected with the outer wall of the hydraulic cylinder body 1; the output end of the filling machine 22 is connected with the oil filling nozzle 9, and the purpose of filling the hydraulic oil in the oil cavity is achieved by starting the filling machine 22 to cooperate with the oil filling nozzle 9, so that a foundation is provided for subsequent clamping work.

Further, pistons 3 are symmetrically arranged in a pressure oil cavity formed in the hydraulic oil cylinder body 1, pushing ends of the two pistons 3 are in opposite states, the opposite ends of the two pistons 3 are also connected with a slip half shaft 4, and the pushing ends of the pistons 3 are fixedly connected with the back of the slip half shaft 4; the inner surfaces of the two slip half shafts 4 are provided with slips 5; the hydraulic oil is filled into the oil pressing cavity by starting the filling machine 22, so that the purpose of pressurizing the oil pressing cavity is achieved, the two pistons 3 move in the same direction, and meanwhile, the two slip half shafts 4 and the two slips 5 are pushed to move in the same direction, so that a drill rod inserted into the hydraulic oil cylinder body 1 is fixed under the clamping action of the two slips 5.

Further, a friction increasing mechanism 8 for protecting the clamping surface of the slip 5 is arranged on the clamping surface of the slip 5, the friction increasing mechanism 8 comprises a bolt 81, a second sealing gasket 82, a disc spring 83 and friction increasing blocks, a plurality of placing grooves are formed in the clamping surface of the slip 5, a plurality of threaded holes are formed in the groove walls at the bottoms of the placing grooves, and each friction increasing mechanism 8 is arranged at the corresponding placing groove and the corresponding threaded hole so as to protect the slip 5 in a clamping state;

the bolts 81 penetrate through the placing grooves, so that the bottom ends of the bolts 81 are located in threaded holes, the threaded holes are connected with the disc springs 83 through threads, the purpose of fixing is achieved, meanwhile, the bolts 81 are screwed, and the bolts 81 are convenient to assemble and disassemble under the cooperation of the threaded holes; the disc spring 83 is sleeved on the outer ring of the bolt 81, and the disc spring 83 and the outer ring of the bolt 81 are in a non-connection state; the disc spring 83 is installed in the placement groove and is in a non-connection state with the placement groove; the friction increasing block is fixedly arranged at the top end of the bolt 81, and meanwhile, the friction increasing block is in a hexagonal shape, so that a worker can conveniently screw the bolt 81 to rotate through the friction increasing block, and convenience is brought to the disassembly and assembly of the bolt 81; the top of the second sealing gasket 82 is fixedly connected with the bottom of the friction increasing block, so that when the bolt 81 is inserted into the threaded hole, the second sealing gasket 82 is matched to seal the placing groove;

when the slips 5 are used for clamping and calibrating the drill rod, the friction increasing blocks are firstly contacted with the outer wall of the drill rod, so that the outer surface of the drill rod is kept at a certain distance from the clamping surface of the slips 5 under the clamping action of the friction increasing blocks, the purpose of protecting the clamping surface of the slips 5 is achieved, the drill rod is prevented from being directly contacted with the slips 5, the problem that the clamping surface of the slips 5 is worn due to rotation of the drill rod is solved, and meanwhile, when the friction increasing blocks clamp the drill rod, the disc springs 83 are beneficial to buffering the pressure generated by the contact of the friction increasing blocks and the drill rod, and the bolt 81 is beneficial to being protected; when the clamping surface of the friction increasing block is seriously worn, the friction increasing block is screwed to drive the bolt 81 to rotate, so that the bolt 81 is separated from the threaded hole, the purpose of disassembling the bolt 81 from the slip 5 is achieved, the friction increasing block and the bolt 81 are replaced, the friction increasing block and the bolt 81 are installed on the clamping surface of the slip 5, and therefore workers are not required to replace the slip 5 integrally, resource waste is reduced, and the operation is simple.

The above-described embodiments are merely a few preferred embodiments of the present utility model, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present utility model and the related teachings of the above-described embodiments.

Claims

1. The utility model provides a fluid pressure type holder, includes hydraulic cylinder body (1), its characterized in that: the hydraulic cylinder is characterized in that pressurizing mechanisms (2) for pressurizing the inside of the hydraulic cylinder body (1) are symmetrically arranged on two sides of the hydraulic cylinder body (1), oil pressing cavities are formed in the hydraulic cylinder body (1), pistons (3) are arranged in the oil pressing cavities, pushing ends of the pistons (3) are connected with slip half shafts (4), slips (5) for clamping rods are arranged on inner surfaces of the slip half shafts (4), friction increasing mechanisms (8) for protecting clamping surfaces of the slips (5) are arranged on clamping surfaces of the slips (5), oil injection nozzles (9) are arranged on outer walls of two sides of the hydraulic cylinder body (1), the two oil injection nozzles (9) are communicated with the oil pressing cavities, and an upper hydraulic cylinder sealing cover (6) and a lower hydraulic cylinder sealing cover (7) are respectively arranged at the top and the bottom of the hydraulic cylinder body (1).

2. A hydraulic gripper according to claim 1, characterized in that the pressurizing mechanism (2) comprises a fixing frame (21), a filling machine (22) is arranged in the fixing frame (21), and a first sealing gasket (23) is arranged on the filling machine (22).

3. A hydraulic clamp according to claim 2, characterized in that one side of the first sealing washer (23) is fixedly connected with the outer wall of the hydraulic cylinder body (1), the output ends of the oil filling nozzle (9) and the filling machine (22) are both positioned at the middle part of the first sealing washer (23), and the oil filling nozzle (9) is communicated with the connecting end of the filling machine (22).

4. The hydraulic gripper according to claim 1, characterized in that a holding surface of the slip (5) is provided with a holding groove, a bottom groove wall of the holding groove is provided with a threaded hole, and the friction increasing mechanism (8) is arranged at the holding groove.

5. A hydraulic gripper according to claim 4, characterized in that the friction increasing mechanism (8) comprises a bolt (81), the top end of the bolt (81) is welded with friction increasing blocks, and the friction increasing blocks are in a shape of 'six sides'.

6. The hydraulic clamp holder according to claim 5, wherein the bottom end of the bolt (81) is located in the threaded hole, a second sealing washer (82) and a disc spring (83) are sleeved on the outer ring of the bolt (81), the disc spring (83) is located in the placing groove, and the second sealing washer (82) is located at the bottom of the friction increasing block.