Drill rod hydraulic clamp

Abstract

The utility model discloses a hydraulic clamp for a drill rod, which comprises a guide base provided with two guide rails arranged at an included angle and spaced from each other; the clamping pieces are connected with the two guide rails respectively and provided with opposite clamping faces, the clamping faces are provided with drill rod clamping grooves, and the drill rod clamping grooves extend in the vertical direction; the driving assembly is connected with the clamping piece and is configured to drive the clamping piece to move along the guide rail in the same direction; the shell is arranged on the periphery of the guide base, the clamping piece and the driving assembly in a surrounding mode. By means of the design, the driving assembly drives the clamping piece to ascend or descend along the guide rail, the distance between the drill rod clamping grooves is increased or decreased due to oblique movement of the clamping piece, and therefore the drill rod is loosened or held tightly, it is guaranteed that the clamping piece has enough clamping force on the drill rod, and when the clamping piece holds tightly the drill rod, friction force exists between the drill rod clamping grooves and the drill rod, and the drill rod is clamped tightly. The clamping piece has the trend of moving downwards due to the dead weight of the drill rod, and the distance between the drill rod clamping grooves is shortened due to the downward movement of the clamping piece, so that the drill rod is further clamped, and the drill rod is prevented from falling off.

Description

Technical Field

[0001] The utility model belongs to the field of drilling equipment, in particular to a drill rod hydraulic clamp. Background Art

[0002] Directional drilling rigs used in mining exploration need to frequently clamp or release drill rods during construction. The device used to clamp or release the drill rods is a drill rod clamp.

[0003] Common drill rod clamps clamp the drill rod with the spring's warning force and release it with hydraulic or manual force. Since the clamping force of the drill rod hydraulic clamp is linked to the spring elasticity, there is a defect that the clamping force is reduced due to spring aging, and the drill rod falls off the clamp and is damaged. Therefore, it is necessary to provide a drill rod hydraulic clamp with strong and stable clamping force. Utility Model Content

[0004] The utility model aims to provide a drill rod hydraulic clamp to solve the technical problem that the clamping force is insufficient and the drill rod falls off due to the aging of the spring of the general drill rod clamp.

[0005] To achieve the above purpose, the specific technical solution of the utility model is as follows:

[0006] A drill pipe hydraulic clamp comprises: a guide base having two guide rails arranged at an angle and spaced from each other; a clamping member connected to the two guide rails respectively, having opposite clamping surfaces, the clamping surface having a drill pipe clamping groove, the drill pipe clamping groove extending in a vertical direction; a driving assembly connected to the clamping member and configured to drive the clamping member to move in the same direction along the guide rails; and a shell surrounding the outer periphery of the guide base, the clamping member and the driving assembly. With such a design, the driving assembly drives the clamping member to rise or fall along the guide rails, and the spacing between the drill pipe clamping grooves is expanded or reduced due to the oblique movement of the clamping member, thereby loosening or clamping the drill pipe, ensuring that the clamping member has sufficient clamping force on the drill pipe. When the clamping member clamps the drill pipe, there is friction between the drill pipe clamping groove and the drill pipe, and the clamping member has a tendency to move downward due to the weight of the drill pipe. The downward movement of the clamping member reduces the spacing between the drill pipe clamping grooves, thereby further clamping the drill pipe and preventing the drill pipe from falling off.

[0007] Furthermore, it also includes a sliding member and a lifting member, wherein the sliding member is semi-covered and fixed with the clamping member, the sliding member is slidably assembled with the guide rail, the lifting member is fixedly connected with the movable end of the driving member, and the sliding member is welded with the lifting member. With such a design, when the driving assembly pushes the lifting member to move up and down, the sliding member will also be driven to move along the guide direction of the slide rail, thereby achieving the purpose of the clamping member holding or loosening the drill rod.

[0008] Furthermore, the driving component is a hydraulic cylinder, and the hydraulic cylinder has a fixing portion fixedly connected to the guide rail. Through such a design, the clamping force provided by the hydraulic cylinder as a driving component is more stable and powerful, and the oil pressure of the hydraulic cylinder can be controlled to meet more different work needs.

[0009] Furthermore, the clamp is a right-angled trapezoidal block, the inclined surface of the clamp is fixed to the sliding member, the two ends of the sliding member are respectively provided with a first anti-slip block and a second anti-slip block, the first anti-slip block is detachably fixed to the clamp, the first anti-slip block partially covers the top fitting part of the clamp and the sliding member, the second anti-slip block is fixedly connected to the sliding member, and the second anti-slip block partially covers the bottom fitting part of the clamp and the sliding member. With such a design, the first anti-slip block and the second anti-slip block are respectively provided at the two ends of the sliding member to limit and fix the clamp and the sliding member.

[0010] Furthermore, it also includes two groups of clamping piece synchronization components, the clamping piece synchronization components include a boss block, a groove block, a fixing bolt and a fastening plate, the boss block and the groove block are arranged in pairs, the boss block and the groove block have a matching plug-in concave-convex structure, the fixing bolt penetrates and fixes the boss block, the lifting member, the clamping member and the groove block of another group of the clamping piece synchronization components, the other fixing bolt penetrates and fixes the groove block, the lifting member and the clamping member and the boss block of another group of the clamping piece synchronization components, and the fastening plate is pressed on the top of the boss block and the groove block belonging to the different clamping piece synchronization components. Through such a design, the boss block is inserted into the groove block, if the hydraulic cylinder driving the two clamping pieces to rise and fall is not synchronized, the clamping pieces will also be lifted together due to the interaction of the clamping piece synchronization components, to prevent the clamping pieces from being misplaced in height and causing unstable clamping of the drill pipe, and the fastening plate has the function of preventing sand, stone and dust.

[0011] Furthermore, a lifting rod is provided on the top of the clamping member, which makes it more convenient to replace the clamping member.

[0012] Furthermore, the drill rod clamping groove is evenly embedded with friction increasing blocks, and the clamping surface of the friction increasing block is provided with a sharp tooth structure. Through such a design, the friction increasing block can increase the friction between the clamping groove and the drill rod, and the sharp tooth structure of the clamping surface of the friction increasing block will be embedded in the outer wall of the drill rod when the drill rod is tightly clamped, further increasing the friction.

[0013] Furthermore, the housing includes a base and a side plate, the base is fixedly fitted with the bottom of the guide rail, the base is provided with a drill rod through hole, the side plate is provided on the side of the clamping member and the driving member, and the side plate is fixed to the guide rail. With such a design, since the working environment of the drilling equipment is generally harsh, the housing can effectively prevent foreign matter from entering the clamp.

[0014] Furthermore, it also includes a lubricating fitting, which is sandwiched between the two sliding members and fixedly connected to the side plate. Through such a design, the overall structural strength of the drill pipe hydraulic clamp is enhanced, and the lubricating fitting has a lubricating liquid outlet with the liquid outlet direction facing the sliding member and the contact surface of the lubricating fitting.

[0015] The beneficial effects of the utility model are as follows: the driving component drives the clamping member to lift or lower along the guide rail, and the distance between the drill rod clamping grooves is expanded or reduced due to the oblique movement of the clamping member, thereby loosening or clamping the drill rod, ensuring that the clamping member has sufficient clamping force on the drill rod. When the clamping member clamps the drill rod, there is friction between the drill rod clamping groove and the drill rod, and the clamping member has a tendency to move downward due to the dead weight of the drill rod. The downward movement of the clamping member reduces the distance between the drill rod clamping grooves, thereby further clamping the drill rod and preventing the drill rod from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the synchronous assembly of the clamping member of the utility model (the clamping member is not lifted);

[0018] Figure 3 Schematic diagram of the clamping member synchronization assembly of the utility model (clamping member lifting)

[0019] Figure 4 This is a schematic diagram of the overall structure of the utility model (without the side panels and the clamping piece synchronization components);

[0020] Figure 5 This is a schematic diagram of the assembly structure of the guide rail, base and hydraulic cylinder of the utility model;

[0021] Figure 6 It is a schematic diagram of the assembly structure of the guide rail, the sliding member and the clamping member of the utility model;

[0022] Figure 7 This is a schematic diagram of the friction-increasing block structure of the utility model;

[0023] Figure 8 It is a top view of the overall structure of the utility model;

[0024] Fig. 9 It is a bottom view of the overall structure of the utility model;

[0025] Fig.10 This is a schematic diagram of the structure of the lubricating fitting of the utility model;

[0026] Explanation of the markings in the figure: 1. Guide rail; 2. Clamping part; 3. Drill rod clamping groove; 4. Sliding part; 5. Lifting part; 6. Hydraulic cylinder; 7. Fixing part; 8. First anti-slip block; 9. Second anti-slip block; 10. Boss block; 11. Groove block; 12. Fastening plate; 13. Lifting rod; 14. Friction increasing block; 15. Pointed tooth structure; 16. Base; 17. Side plate; 18. Drill rod through hole; 19. Lubricating fitting; 20. Fixing bolt; 21. Lubricating liquid outlet. DETAILED DESCRIPTION

[0027] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0028] like Figures 1 to 8 shown.

[0029] Example 1

[0030] A drill rod hydraulic clamp comprises: a guide base having two guide rails 1 arranged at an angle and spaced from each other; a clamping member 2 connected to the two guide rails 1 respectively and having opposite clamping surfaces, wherein the clamping surface has a drill rod clamping groove 3, and the drill rod clamping groove 3 extends in a vertical direction; a driving assembly connected to the clamping member 2 and configured to drive the clamping member 2 to move in the same direction along the guide rails 1; and a shell surrounding the outer periphery of the guide base, the clamping member 2 and the driving assembly.

[0031] The implementation method of the above embodiment is: the driving component drives the clamping member 2 to lift or lower along the guide rail 1, and the distance between the drill rod clamping grooves 3 is expanded or reduced due to the oblique movement of the clamping member 2, thereby loosening or clamping the drill rod, ensuring that the clamping member 2 has sufficient clamping force on the drill rod. When the clamping member 2 clamps the drill rod, there is friction between the drill rod clamping groove 3 and the drill rod, and the clamping member 2 has a tendency to move downward due to the weight of the drill rod. The downward movement of the clamping member 2 reduces the distance between the drill rod clamping grooves 3, thereby further clamping the drill rod to prevent the drill rod from falling off.

[0032] Example 2

[0033] It also includes a sliding member 4 and a lifting member 5. The sliding member 4 is semi-covered and fixed with the clamping member 2. The sliding member 4 is slidably assembled with the guide rail 1. The lifting member 5 is fixedly connected to the movable end of the driving member. The sliding member 4 and the lifting member 5 are welded.

[0034] The driving assembly is a hydraulic cylinder 6, and the hydraulic cylinder 6 has a fixing portion 7 fixedly connected to the guide rail 1. The extension direction of the cylinder 6 is parallel to the guiding direction of the guide rail 1.

[0035] The implementation method of the above embodiment is as follows: the lifting member 5 is fixed to the telescopic end of the hydraulic cylinder 6, and the lifting member 5 is welded to the sliding member 4. When the telescopic end of the hydraulic cylinder 6 moves, it can slide along the guide direction of the slide rail with the help of the sliding member 4. Since the slide rail is inclined, and the drill rod clamping groove 3 of the clamping member 2 extends in the vertical direction, when the sliding member 4 slides obliquely upward and downward, the distance between the clamping members 2 will expand or shrink.

[0036] Example 3

[0037] The clamping member 2 is a right-angled trapezoidal block, the inclined surface of the clamping member 2 is fixed to the sliding member 4, and the first anti-slip block 8 and the second anti-slip block 9 are respectively provided at both ends of the sliding member 4. The first anti-slip block 8 is detachably fixed to the clamping member 2, and the first anti-slip block 8 partially covers the top fitting part of the clamping member 2 and the sliding member 4. The second anti-slip block 9 is fixedly connected to the sliding member 4, and the second anti-slip block 9 partially covers the bottom fitting part of the clamping member 2 and the sliding member 4.

[0038] It also includes two groups of clamping member synchronization components, which include a boss block 10, a groove block 11, a fixing bolt 20 and a fastening plate 12. The boss block 10 and the groove block 11 are arranged in pairs, and the boss block 10 and the groove block 11 have a matching and plug-in concave-convex structure. The fixing bolt 20 penetrates and fixes the boss block 10, the lifting member 5, the clamping member 2 and the groove block 11 of another group of the clamping member synchronization components. Another fixing bolt 20 penetrates and fixes the groove block 11, the lifting member 5 and the clamping member 2 and the boss block 10 of another group of the clamping member synchronization components. The fastening plate 12 is pressed on the top of the boss block 10 and the groove block 11 belonging to different clamping member synchronization components.

[0039] The implementation method of the above embodiment is as follows: the clamping cooperation between the first anti-slip block 8 and the second anti-slip block 9 prevents the clamping member 2 from escaping from the top or bottom of the sliding member 4, and the fixing bolt 20 limits the clamping member 2 from escaping in the horizontal direction, thereby fixing the clamping member 2. When the drill pipe hydraulic clamp is used to clamp drilling tools of different specifications, it is necessary to replace the clamping members 2 of different specifications. When replacing the clamping member 2, it is only necessary to pull out the fixing bolt 20 and then remove the first anti-slip block 8 and the fastening plate 12 to remove the clamping member 2.

[0040] Example 4

[0041] A lifting rod 13 is provided on the top of the clamping member 2. Such a design makes it more convenient to replace the clamping member 2.

[0042] The drill rod clamping groove 3 is evenly embedded with friction increasing blocks 14 , and the clamping surface of the friction increasing blocks 14 is provided with a sharp tooth structure 15 .

[0043] The implementation method of the above embodiment is as follows: the friction increasing block 14 is made of metal or alloy, and the friction increasing block 14 can increase the friction between the clamping groove and the drill rod. The sharp tooth structure 15 on the clamping surface of the friction increasing block 14 will be embedded in the outer wall of the drill rod when clamping the drill rod. The clamping part 2 has a tendency to move downward due to the weight of the drill rod. The downward movement of the clamping part 2 reduces the distance between the drill rod clamping grooves 3, thereby further clamping the drill rod to prevent the drill rod from falling off.

[0044] Example 5

[0045] The housing includes a base 16 and a side plate 17. The base 16 is fixedly attached to the bottom of the guide rail 1. The base 16 is provided with a drill rod through hole 18. The side plate 17 is blocked at the sides of the clamping member 2 and the driving member, and the side plate 17 is fixed to the guide rail 1. Since the working environment of the drilling equipment is generally harsh, the housing can effectively prevent foreign matter from entering the clamp.

[0046] It also includes a lubricating fitting 19, which is sandwiched between the two sliding members 4, and is fixedly connected to the side plate 17. The lubricating fitting 19 has a lubricating liquid outlet with the liquid outlet direction facing the contact surface between the sliding member 4 and the lubricating fitting 19. The overall structural strength of the drill pipe hydraulic clamp is strengthened and the sliding surface between the sliding member and the lubricating fitting is lubricated.

[0047] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A drill pipe hydraulic clamp, characterized in that: include: A guide base having two guide rails (1) arranged at an angle and spaced apart from each other; A clamping member (2) is respectively connected to the two guide rails (1), and has opposite clamping surfaces, wherein the clamping surfaces have a drill rod clamping groove (3), and the drill rod clamping groove (3) extends in a vertical direction; A driving assembly connected to the clamping member (2) and configured to drive the clamping member (2) to move in the same direction along the guide rail (1); The shell is arranged around the outer periphery of the guide base, the clamping member (2) and the driving assembly.

2. The drill pipe hydraulic clamp according to claim 1, characterized in that: It also includes a sliding member (4) and a lifting member (5), wherein the sliding member (4) and the clamping member (2) are semi-enclosed and fixed, the sliding member (4) and the guide rail (1) are slidably assembled, the lifting member (5) is fixedly connected to the movable end of the driving assembly, and the sliding member (4) and the lifting member (5) are welded.

3. The drill pipe hydraulic clamp according to claim 1, characterized in that: The driving component is a hydraulic cylinder (6), and the hydraulic cylinder (6) has a fixing portion (7) fixedly connected to the guide rail (1).

4. The drill pipe hydraulic clamp according to claim 2, characterized in that: The clamping member (2) is a right-angled trapezoidal block, the inclined surface of the clamping member (2) is fixed to the sliding member (4), and the two ends of the sliding member (4) are respectively provided with a first anti-slip block (8) and a second anti-slip block (9), the first anti-slip block (8) and the clamping member (2) are detachably fixed, the first anti-slip block (8) partially covers the top contact portion of the clamping member (2) and the sliding member (4), and the second anti-slip block (9) is fixedly connected to the sliding member (4), and the second anti-slip block (9) partially covers the bottom contact portion of the clamping member (2) and the sliding member (4).

5. The drill pipe hydraulic clamp according to claim 1, characterized in that: The invention also comprises two groups of clamping member synchronization components, wherein the clamping member synchronization components comprise a boss block (10), a groove block (11), a fixing bolt (20) and a fastening plate (12); the boss block (10) and the groove block (11) are arranged in pairs; the boss block (10) and the groove block (11) have a matching and plug-in concave-convex structure; the fixing bolt (20) penetrates and fixes the boss block (10), the lifting member (5), the clamping member (2) and the groove block (11) of another group of the clamping member synchronization components; another fixing bolt (20) penetrates and fixes the groove block (11), the lifting member (5) and the clamping member (2) and the boss block (10) of another group of the clamping member synchronization components; and the fastening plate (12) is pressed on the top of the boss block (10) and the groove block (11) belonging to different clamping member synchronization components.

6. The drill pipe hydraulic clamp according to claim 1, characterized in that: A lifting rod (13) is provided on the top of the clamping member (2).

7. The drill pipe hydraulic clamp according to claim 1, characterized in that: The drill rod clamping groove (3) is evenly embedded with friction increasing blocks (14), and the clamping surface of the friction increasing block (14) is provided with a sharp tooth structure (15).

8. The drill pipe hydraulic clamp according to claim 1, characterized in that: The housing comprises a base (16) and a side plate (17); the base (16) is fitted and fixed to the bottom of the guide rail (1); the base (16) is provided with a drill rod through hole (18); the side plate (17) is blocked on the side of the clamping member (2) and the driving member; and the side plate (17) is fixed to the guide rail (1).

9. The drill pipe hydraulic clamp according to claim 1, characterized in that: It also comprises a lubricating fitting (19), the lubricating fitting (19) being sandwiched between two sliding members (4), the lubricating fitting (19) being fixedly connected to the side plate (17), and the lubricating fitting (19) having a lubricating liquid outlet with the liquid outlet direction facing the contact surface between the sliding member (4) and the lubricating fitting (19).

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