Built-in oil cylinder type hydraulic chuck for drilling machine

Abstract

The built-in oil cylinder type hydraulic chuck for the drilling machine comprises a hydraulic chuck shell and an oil storage cavity, the oil storage cavity is formed in the hydraulic chuck shell, sliding assemblies are evenly installed on the top of the interior of the hydraulic chuck shell, and four sets of installation through openings are evenly formed in the bottom of the hydraulic chuck shell. Sliding plates are installed at the bottoms of the sliding assemblies in a sliding mode, all the sliding plates penetrate through the installation through opening and extend to the exterior of the hydraulic chuck shell, slips are installed at the bottoms of all the sliding plates, a piston is installed in the oil storage cavity, and an installation through hole is formed in the bottom of the oil storage cavity. The clamping device is provided with the slips, the sliding plate and the sliding assembly, when the clamping device is used, the sliding plate can slide on the sliding assembly, the sliding plate drives the slips to move together, a drill rod can be firmly clamped through the slips, and the clamping device can be used for clamping drill rods with different diameters and is high in adjustability and applicability.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling chucks, in particular to a built-in oil cylinder type hydraulic chuck for a drilling rig. Background Art

[0002] A drilling rig is a mechanical device that drives the drill tool into the ground to obtain physical geological data during exploration or mineral resource development. The chuck is an important component of the hydraulic drilling rig. It is installed at the front end of the power head to clamp the drill rod or water-drilling shaft to output rotational motion.

[0003] For example, the utility model: "Built-in oil cylinder type hydraulic chuck", with the announcement number: "CN201246118Y", adopts multiple oil cylinders arranged radially to make the drill rod evenly stressed, and increase the flexibility and clamping strength of clamping. The clamping force can change with the rotating oil pressure of the power head, thereby reducing the friction damage of the clamping parts and effectively protecting the drill rod. However, during the implementation of this patent, the piston needs to contact with the slip and drive the slip to move, and friction is generated between the piston and the slip, which easily causes wear of the piston and the slip, greatly reducing the service life of the device. Therefore, the research and development of built-in oil cylinder type hydraulic chucks for new drilling rigs has received more and more attention from researchers. Utility Model Content

[0004] The utility model aims to provide a built-in oil cylinder hydraulic chuck for a drilling rig to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a built-in oil cylinder type hydraulic chuck for a drilling rig, comprising a hydraulic chuck housing and an oil storage chamber, the hydraulic chuck housing is provided with an oil storage chamber, and sliding components are evenly installed on the top of the hydraulic chuck housing, the bottom of the hydraulic chuck housing is evenly provided with four groups of mounting openings, the bottom of the sliding components are all slidably installed with sliding plates, the sliding plates all pass through the mounting openings and extend to the outside of the hydraulic chuck housing, and the bottom of the sliding plates are all installed with slips, a piston is installed inside the oil storage chamber, and the bottom of the oil storage chamber is provided with a mounting through hole.

[0006] Preferably, a piston connecting rod is installed at the middle position of the bottom of the piston, the piston connecting rod passes through the installation through hole, and a lifting connecting plate is installed at the bottom of the piston connecting rod, four groups of driving connecting rods are evenly hinged on the outer side of the lifting connecting plate, and the ends of the driving connecting rods away from the lifting connecting plate are hinged to the sliding plate.

[0007] Preferably, a return spring is installed on the outer side of the sliding plate, and one end of the return spring away from the sliding plate is connected to the hydraulic chuck housing.

[0008] Preferably, an oil guide pipe is installed on the top of the hydraulic chuck housing, and the oil guide pipe passes through the hydraulic chuck housing and extends to the inside of the oil storage cavity.

[0009] Preferably, four groups of sliding components are provided, and the angle between two adjacent groups of sliding components is ninety degrees.

[0010] Preferably, the inner side of the slips are all installed with anti-skid rubber pads, and the outer side of the anti-skid rubber pads are all provided with anti-skid patterns.

[0011] Preferably, a sealing rubber ring is installed on the inner side of the mounting through hole.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The drilling rig uses a built-in oil cylinder hydraulic chuck equipped with slips, a sliding plate and a sliding assembly. When in use, the sliding plate can slide on the sliding assembly, and the sliding plate drives the slips to move together, so that the drill rod can be firmly clamped by the slips. The device can be used to clamp drill rods of different diameters, and has strong adjustability and applicability;

[0014] 2. The built-in oil cylinder hydraulic chuck for the drilling rig is equipped with a lifting connecting plate, a piston, a piston connecting rod and a driving connecting rod. When oil is introduced into the oil storage chamber, the piston is stressed and drives the piston connecting rod to move, and the piston connecting rod drives the lifting connecting plate to move. The lifting connecting plate can simultaneously drive four groups of driving connecting rods to move, so that the driving connecting rods are stressed and pull the sliding plate to move, and the four groups of slips can be driven to clamp the drill rod at the same time. When clamping the drill rod, the piston does not directly contact the slips, which can avoid friction between the piston and the slips, and can avoid wear of the piston and the slips. The movement of one group of pistons can simultaneously drive the four groups of slips to move, without the need to radially arrange multiple groups of oil cylinders, and the device is more convenient to use.

[0015] 3. The drilling rig uses a built-in cylinder hydraulic chuck installed with a hydraulic chuck housing. When the oil in the oil storage chamber is discharged, the elastic action of the reset spring causes it to pull the sliding plate to move, which can assist the sliding plate in moving and resetting, so that the slips are away from the drill rod, thereby facilitating the removal of the drill rod from between the slips. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the front cross-sectional view of the utility model;

[0017] Figure 2 It is a main schematic diagram of the utility model;

[0018] Figure 3 It is a bottom sectional schematic diagram of the utility model.

[0019] In the figure: 1. Cava; 2. Hydraulic chuck housing; 3. Reset spring; 4. Sliding plate; 5. Lifting connecting plate; 6. Sealing rubber ring; 7. Oil storage chamber; 8. Piston; 9. Oil guide pipe; 10. Piston connecting rod; 11. Mounting through hole; 12. Sliding assembly; 13. Drive connecting rod; 14. Mounting port; 15. Anti-slip rubber pad. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3 The utility model provides an embodiment: a built-in oil cylinder hydraulic chuck for a drilling rig, comprising a hydraulic chuck housing 2 and an oil storage chamber 7, the hydraulic chuck housing 2 is provided with an oil storage chamber 7, and a sliding assembly 12 is evenly installed on the top of the hydraulic chuck housing 2, and four groups of mounting openings 14 are evenly arranged on the bottom of the hydraulic chuck housing 2, and a sliding plate 4 is slidably installed on the bottom of the sliding assembly 12, and the sliding plates 4 pass through the mounting openings 14 and extend to the outside of the hydraulic chuck housing 2, and a slip 1 is installed on the bottom of the sliding plates 4, a piston 8 is installed inside the oil storage chamber 7, and a mounting through hole 11 is arranged on the bottom of the oil storage chamber 7.

[0022] In this implementation:

[0023] Furthermore, a piston connecting rod 10 is installed at the middle position of the bottom of the piston 8. The piston connecting rod 10 passes through the installation through hole 11, and a lifting connecting plate 5 is installed at the bottom of the piston connecting rod 10. Four groups of driving connecting rods 13 are evenly hinged on the outer side of the lifting connecting plate 5, and the ends of the driving connecting rods 13 away from the lifting connecting plate 5 are hinged to the sliding plate 4. The piston 8 is subjected to the pressure of the oil and moves downward. The piston 8 drives the lifting connecting plate 5 to move downward through the piston connecting rod 10, so that the lifting connecting plate 5 simultaneously drives the four groups of driving connecting rods 13 to move, so that the driving connecting rods 13 pull the sliding plate 4 to slide, and the sliding plate 4 can drive the cava 1 to move.

[0024] Furthermore, a return spring 3 is installed on the outer side of the sliding plate 4, and the end of the return spring 3 away from the sliding plate 4 is connected to the hydraulic chuck housing 2. After use, the oil in the oil storage chamber 7 is discharged through the oil guide pipe 9. At this time, the piston connecting rod 10 no longer applies thrust to the lifting connecting plate 5. The elastic action of the return spring 3 causes it to pull the sliding plate 4 to move and reset. The sliding plate 4 drives the slip 1 to move together, so that the slip 1 can be moved away from the drill rod, and the drill rod can be removed from between the slips 1.

[0025] Furthermore, an oil guide pipe 9 is installed on the top of the hydraulic chuck housing 2, and the oil guide pipe 9 passes through the hydraulic chuck housing 2 and extends to the inside of the oil storage chamber 7. The oil can enter the oil storage chamber 7 through the oil guide pipe 9 and can be discharged from the inside of the oil storage chamber 7 through the oil guide pipe 9.

[0026] Furthermore, four groups of sliding assemblies 12 are provided, and the included angle between two adjacent groups of sliding assemblies 12 is ninety degrees, so that the drill rod can be clamped by four groups of slips 1 at the same time.

[0027] Furthermore, the inner side of the slips 1 is installed with anti-skid rubber pads 15, and the outer side of the anti-skid rubber pads 15 is provided with anti-skid patterns, which has a good anti-skid effect and is conducive to firmly clamping the drill rod.

[0028] Furthermore, a sealing rubber ring 6 is installed on the inner side of the installation through hole 11 , which has good sealing performance and can prevent oil from leaking through the installation through hole 11 .

[0029] Working principle:

[0030] When clamping the drill pipe, place the drill pipe between the four sets of slips 1, and let the oil flow into the oil storage chamber 7 through the oil guide pipe 9;

[0031] At this time, the piston 8 is subjected to the pressure of the oil and moves downward, and the piston 8 drives the lifting connecting plate 5 to move downward through the piston connecting rod 10, so that the lifting connecting plate 5 drives the four sets of driving connecting rods 13 to move at the same time, so that the driving connecting rods 13 pull the sliding plate 4 to slide, and the sliding plate 4 drives the slips 1 to move, so that the four sets of slips 1 can fit closely with the outer side of the drill pipe, and the drill pipe can be clamped by the four sets of slips 1;

[0032] After use, the oil in the oil storage chamber 7 is discharged through the oil guide pipe 9. At this time, the piston connecting rod 10 no longer applies thrust to the lifting connecting plate 5, and the elastic action of the reset spring 3 causes it to pull the sliding plate 4 to move and reset. The sliding plate 4 drives the slips 1 to move together, so that the slips 1 can be moved away from the drill rod, and the drill rod can be removed from between the slips 1;

[0033] The sliding plate 4 drives the driving connecting rod 13 to move together, so that the driving connecting rod 13 is stressed and pulls the lifting connecting plate 5 to move upward, so that the lifting connecting plate 5 drives the piston 8 to move upward through the piston connecting rod 10, which can assist the piston 8 in pushing the oil to be discharged from the inside of the oil guide pipe 9.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A hydraulic chuck with a built-in oil cylinder for a drilling rig, comprising a hydraulic chuck housing (2) and an oil storage chamber (7), characterized in that: An oil storage chamber (7) is arranged inside the hydraulic chuck housing (2), and a sliding assembly (12) is evenly installed on the top of the hydraulic chuck housing (2), and four groups of mounting openings (14) are evenly arranged on the bottom of the hydraulic chuck housing (2). A sliding plate (4) is slidably installed on the bottom of each sliding assembly (12), and each sliding plate (4) passes through the mounting opening (14) and extends to the outside of the hydraulic chuck housing (2), and a slipper (1) is installed on the bottom of each sliding plate (4). A piston (8) is installed inside the oil storage chamber (7), and a mounting through hole (11) is arranged at the bottom of the oil storage chamber (7).

2. The built-in cylinder hydraulic chuck for drilling rig according to claim 1, characterized in that: A piston connecting rod (10) is installed at the middle position of the bottom of the piston (8), the piston connecting rod (10) passes through the installation through hole (11), and a lifting connecting plate (5) is installed at the bottom of the piston connecting rod (10), and four groups of driving connecting rods (13) are evenly hinged on the outer side of the lifting connecting plate (5), and the ends of the driving connecting rods (13) away from the lifting connecting plate (5) are hinged to the sliding plate (4).

3. The built-in cylinder hydraulic chuck for drilling rig according to claim 1, characterized in that: A return spring (3) is installed on the outer side of the sliding plate (4), and one end of the return spring (3) away from the sliding plate (4) is connected to the hydraulic chuck housing (2).

4. The built-in cylinder hydraulic chuck for drilling rig according to claim 1, characterized in that: An oil guide pipe (9) is installed on the top of the hydraulic chuck housing (2), and the oil guide pipe (9) passes through the hydraulic chuck housing (2) and extends to the interior of the oil storage chamber (7).

5. The built-in cylinder hydraulic chuck for drilling rig according to claim 1, characterized in that: The sliding components (12) are provided in four groups, and the included angle between two adjacent groups of sliding components (12) is ninety degrees.

6. The built-in cylinder hydraulic chuck for drilling rig according to claim 1, characterized in that: The inner side of the slips (1) is provided with anti-skid rubber pads (15), and the outer side of the anti-skid rubber pads (15) is provided with anti-skid patterns.

7. The built-in cylinder hydraulic chuck for drilling rig according to claim 1, characterized in that: A sealing rubber ring (6) is installed on the inner side of the installation through hole (11).

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