Drill rod clamping device and mouse hole clamping device

Abstract

The invention discloses a drill rod clamping device, and relates to the technical field of drilling tool devices. The drill rod clamping device mainly comprises a shell, a telescopic device, two sliding frames and two slips, the two sliding frames are oppositely arranged and slidably connected, the two slips are oppositely arranged, and the shell is rotationally connected with a shell fixing platform; the telescopic device is arranged in the shell and gradually inclines towards the outer side of the central axis of the shell from bottom to top. The sliding frames are arranged on the shell in a sliding mode, the end, away from the other sliding frame, of at least one sliding frame is connected with a telescopic rod of the telescopic device, and the two sliding frames can get close to or get away from each other in the horizontal direction. The two slips are fixedly connected with the two sliding frames correspondingly and arranged in the shell, and the two slips can get close to each other to clamp the drill rod. The invention further discloses a mouse hole clamping device which comprises a laying table support and the drill rod clamping device, the laying table support is used for containing the drill rod clamping device, and a bottom plate of the laying table support is a shell fixing platform. The inclined cutting angle of the drill rod is convenient to adjust, and the inclined cutting device can adapt to drill rods of various specifications.

Description

Technical Field

[0001] The invention relates to the technical field of drilling tool devices, in particular to a drill rod clamp and a mouse hole clamp. Background Art

[0002] A rathole is a hole on the drilling platform of a drilling project for placing a drill pipe when starting drilling. It consists of a casing (called a rathole pipe) that is tilted toward the center of the derrick and inserted into the ground. During use, the core top drive device needs to be connected to the drill pipe. Under normal circumstances, after the core top drive device is tilted, the angle of the drill pipe needs to be fine-tuned to make the inclination angle of the drill pipe consistent with the inclination angle of the top drive device. Only then can the core top drive device and the drill pipe be connected more quickly, which can reduce damage to the drill pipe connection buckle. However, after the drill pipe is placed in the rathole pipe, the inclination angle of the drill pipe is basically consistent with the angle when the rathole is installed, and the angle cannot be adjusted. Therefore, there is an urgent need for a drill pipe clamp and a rathole clamping device to solve the above technical problems. Summary of the invention

[0003] The object of the present invention is to provide a drill rod clamp and a mouse hole clamping device to solve the problems existing in the above-mentioned prior art, so that the inclination angle of the drill rod is easy to adjust and can adapt to drill rods of various specifications.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a drill rod holder, comprising

[0006] A housing, the housing being used for rotationally connecting with the housing fixing platform;

[0007] A telescopic device, the telescopic device is arranged in the shell, and the telescopic device gradually tilts toward the outside of the central axis of the shell from bottom to top;

[0008] Two slides arranged opposite to each other and slidably connected, the slides being slidably arranged on the housing, one end of at least one slide away from the other slide being connected to the telescopic device, and the two slides being able to approach or move away from each other in a horizontal direction;

[0009] Two slips are arranged opposite to each other, the two slips are respectively fixedly connected to the two slides and are arranged inside the shell. The two slips can be close to each other for clamping the drill rod.

[0010] Preferably, the shell and the shell fixing platform are rotatably connected via a first pin shaft, a first ear plate is provided at the bottom of the shell, a second ear plate is provided on the shell fixing platform, both the first ear plate and the second ear plate are provided with pin shaft holes, and the first pin shaft can pass through the pin shaft hole to rotatably connect the first ear plate with the second ear plate.

[0011] Preferably, two second ear plates are arranged opposite to each other, and the first ear plate can be inserted between the two second ear plates arranged opposite to each other.

[0012] Preferably, two pairs of the first ear plates and the second ear plates are provided at the bottom of the shell along the direction of the deflection axis of the shell.

[0013] Preferably, two telescopic devices are provided, which are respectively located at two sides of the interior of the shell, and the two slides are each connected to a telescopic rod of the telescopic device.

[0014] Preferably, the telescopic device is a telescopic cylinder.

[0015] Preferably, the slip is fixed to the slide by a second pin.

[0016] Preferably, the slips are arc-shaped slips, and the arc-shaped surfaces of the two arc-shaped slips are used to clamp the drill rod.

[0017] Preferably, a reset spring is further included, which is arranged on the side of the shell and is on a side different from the deflection direction. The top of the reset spring is fixedly connected to the shell, and the bottom is fixedly connected to the shell fixing platform.

[0018] The present invention also provides a rathole clamping device, comprising a platform support and the drill rod clamp as described above, wherein the platform support is used to accommodate the drill rod clamp, and the bottom plate of the platform support is the shell fixing platform.

[0019] Compared with the prior art, the present invention has achieved the following technical effects:

[0020] The invention comprises a housing, a telescopic device, two slides arranged oppositely and slidably connected, and two slips arranged oppositely, wherein the housing is used for rotationally connecting with a housing fixed platform; the telescopic device is arranged in the housing, and the telescopic device gradually tilts toward the outer side of the central axis of the housing from bottom to top; the slide is slidably arranged on the housing, and at least one slide is connected to a telescopic device at one end away from the other slide, and the two slides can approach or move away from each other in the horizontal direction; the two slips are respectively fixedly connected with the two slides and arranged inside the housing. Through the telescopic effect of the telescopic device, the two slides can approach or move away from each other in the horizontal direction, thereby driving the two slips fixedly connected thereto to change the relative position, when the diameter variation range of the drill pipe is small, the effective clamping of the drill pipe can be achieved by slightly changing the distance between the two slips, and the slip model can be flexibly adjusted according to actual use requirements to adapt to drill pipes of different sizes and specifications, and the application range is wide, and the housing is rotationally connected with the housing fixed platform, so that the housing can flexibly change its own angle position according to specific working conditions, installation environment, etc., and is convenient for connecting with a top drive device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 Schematic diagram of the structure of the drill rod clamp in some embodiments of the present invention;

[0023] Figure 2 A side view of a drill rod holder in some embodiments of the present invention;

[0024] Figure 3 It is a front view of a drill rod holder installed in a platform support in some embodiments of the present invention;

[0025] Figure 4 A side view of a drill rod holder installed in a platform support in some embodiments of the present invention;

[0026] Figure 5 It is a top view of a drill rod holder installed in a platform support in some embodiments of the present invention.

[0027] In the figure: 101-drill rod holder; 102-bed support; 1-telescopic device; 2-housing; 3-second pin; 4-slip; 51-first ear plate; 52-second ear plate; 53-first pin; 6-slide; 7-tension spring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The purpose of the present invention is to provide a drill rod clamp and a mouse hole clamping device to solve the problems existing in the prior art, so that the inclination angle of the drill rod is easy to adjust and can adapt to drill rods of various specifications.

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Embodiment 1

[0032] like Figure 1-Figure 5As shown, the present invention provides a drill rod clamp, comprising a shell 2, a telescopic device 1, two slides 6 that are relatively arranged and slidably connected, and two slips 4 that are relatively arranged, wherein the shell 2 is used for rotationally connecting with the shell fixing platform; the telescopic device 1 is arranged in the shell 2, and the telescopic device 1 gradually tilts toward the outside of the central axis of the shell 2 from bottom to top, that is, the top of the telescopic device 1 is farther from the central axis of the shell 2 in the vertical direction than the bottom of the telescopic device 1 is from the central axis of the shell 2 in the vertical direction; the slide 6 is slidably arranged on the shell 2, at least one slide 6 is connected to a telescopic device 1 at one end away from the other slide 6, and the two slides 6 can approach or move away from each other in the horizontal direction; the two slips 4 are fixedly connected to the two slides 6, respectively, and are arranged inside the shell 2, and the two slips 4 can approach each other for clamping the drill rod. Through the telescopic effect of the telescopic device 1, the two slides 6 can be moved closer to or farther away from each other in the horizontal direction, thereby driving the two slips 4 fixedly connected thereto to change their relative positions. When the diameter variation range of the drill pipe is small, the drill pipe can be effectively clamped by slightly changing the distance between the two slips 4. Moreover, the model of the slips 4 can be flexibly adjusted according to actual use requirements to adapt to drill pipes of different sizes and specifications, and the scope of application is wide. The shell 2 is rotatably connected to the shell fixing platform, so that the shell 2 can flexibly change its own angular position according to specific working conditions, installation environment, etc., so as to facilitate connection with the top drive device.

[0033] In some embodiments, the housing 2 is rotatably connected to the housing fixing platform via a first pin 53, a first ear plate 51 is provided at the bottom of the housing 2, a second ear plate 52 is provided on the housing fixing platform, and a pin hole is provided on both the first ear plate 51 and the second ear plate 52, through which the first pin 53 can pass to rotatably connect the first ear plate 51 with the second ear plate 52. The rotatable connection mode in which the first ear plate 51 and the second ear plate 52 cooperate with the first pin 53 is simple in structure and easy to implement, and is relatively convenient to install and disassemble, and enables the housing 2 to flexibly rotate relative to the housing fixing platform. When rotation is required, the operator only needs to hold the drill rod and apply force along the rotation axis to realize the rotation of the housing 2 relative to the fixing platform.

[0034] In some embodiments, two second ear plates 52 are arranged opposite to each other, and the first ear plate 51 can be inserted between the two second ear plates 52 arranged opposite to each other, and the two second ear plates 52 arranged opposite to each other can support and limit the first ear plate 51 inserted therein from both sides. Compared with the connection method of a single ear plate, the double-sided constraint structure can more effectively limit the horizontal movement of the first ear plate 51, so that it will not easily deviate, shake or other unstable phenomena during the rotation process, thereby ensuring the stability of the connection between the shell 2 and the shell fixing platform. In addition, when assembling the shell 2 and the shell fixing platform, the structure of inserting the first ear plate 51 between the two second ear plates 52 arranged opposite to each other has an auxiliary positioning function. The installer can easily find the relative position through this embedding method, so that the pin shaft hole on the first ear plate 51 is accurately aligned with the pin shaft holes of the two second ear plates 52, which is convenient for the subsequent insertion of the first pin shaft 53 and helps to improve the efficiency of assembly.

[0035] In some embodiments, two pairs of first ear plates 51 and second ear plates 52 are provided at the bottom of the shell 2 along the direction of the deflection axis of the shell 2. The provision of two pairs of first ear plates 51 and second ear plates 52 means that there are multiple connection points in the direction of the deflection axis. Compared with a single pair of ear plates, the connection between the shell 2 and the shell fixing platform can be supported and fixed from more directions, which can effectively disperse various external forces borne by the device during operation, such as tension, pressure, torsion, etc. from different directions, making the connection structure more stable and reducing the possibility of loosening, deformation, etc. due to excessive local force, thereby ensuring the stability and reliability of the shell 2 during rotation and the entire device during operation.

[0036] In some embodiments, two telescopic devices 1 are provided, which are located on both sides of the housing 2, and the two slides 6 are connected to the telescopic rod of each telescopic device 1. The two telescopic devices 1 are located on both sides of the housing 2, and can apply forces to the slide 6 from two opposite directions during operation, so that the thrust or pull on the slide 6 is more balanced and symmetrical. Compared with the case where only one telescopic device 1 is provided, the bilaterally symmetrical force application method can effectively prevent the slide 6 from tilting, deflecting and other unstable phenomena due to unilateral force, and ensure that the slides 6 are steadily approaching or moving away from each other in the horizontal direction, thereby ensuring that the components such as the slips 4 connected to the slide 6 can also move and work stably.

[0037] It should be noted that only one telescopic device 1 may be provided, and the telescopic device 1 is connected to one slide 6. By pushing one slide 6 to move, the other slide 6 can be driven to move. At the same time, the slide 6 connected to the telescopic device 1 can move away from or close to the other slide 6, and drill rods of different diameters can be clamped. However, if only one telescopic device 1 is provided, there may be a movement conflict phenomenon. The slide 6 connected to the telescopic device 1 moves upward and outward, and the slide 6 not connected to the telescopic device 1 may be constrained by the housing 2, and it is impossible to ensure that the same distance of upward movement is achieved.

[0038] As a preferred embodiment, the telescopic device 1 is a telescopic cylinder, which can amplify a smaller input force through a hydraulic system and convert it into a larger output force.

[0039] In some embodiments, the slip 4 is fixed to the carriage 6 by the second pin 3. The installation method is relatively simple and direct. It only needs to align the corresponding installation hole on the slip 4 with the connection hole of the carriage 6, and then insert the second pin 3 to complete the connection. The operation is convenient and quick. And the second pin 3 connection usually allows the slip 4 to rotate slightly relative to the carriage 6 to a certain extent. In the actual operation of the device, when encountering different working scenes and force conditions, the slip 4 can slightly adjust the angle according to the actual situation to better fit the object being acted on, which can meet the needs of the slip 4 to flexibly change the posture within a certain range, and enhance the overall adaptability and functionality of the device.

[0040] In some embodiments, the slips 4 are arc-shaped tiles, and the arc-shaped surfaces of the two arc-shaped tiles are used to clamp the drill rod. The drill rod is usually a cylindrical structure, and the arc-shaped surface of the arc-shaped tile can fit the outer contour of the drill rod well, so that the contact area between the slips 4 and the drill rod is larger, and when performing the clamping operation, the clamping force can be more evenly dispersed to avoid stress concentration in a local area, and the drill rod can be fixed more firmly, effectively preventing the drill rod from shaking, shifting, etc. during the operation, and ensuring the stability of the operation.

[0041] It should be noted that there are multiple models of Kava 4, which can be adapted to rope coring drill rods or geological drill rods with a diameter not exceeding 146mm.

[0042] In some embodiments, the drill pipe clamp further includes a reset spring 7, which is arranged on the side of the housing 2, and the side of the housing 2 is different from the side of the deflection direction. The housing 2 can be tilted at a certain angle toward the side without the reset spring 7 (the direction of the wellhead, the left side of the housing), and the reset spring is preferably arranged at one, specifically, arranged on the right side of the housing, the top of the reset spring 7 is fixedly connected to the housing 2, and the bottom is fixedly connected to the housing fixed platform; the reset spring can also be arranged at two, specifically, arranged on the front and rear sides of the housing, but arranged vertically. After the drill pipe clamp completes the clamping and manual adjustment of the drill pipe, the reset spring 7 can pull the housing 2 back to the initial position by virtue of its own elastic restoring force, so that the entire clamp is restored to the initial state before working, which is convenient for the next quick and accurate drill pipe clamping operation, and improves the convenience of use and work efficiency.

[0043] Embodiment 2

[0044] The present invention also provides a rathole clamping device, including a platform support 102 and the drill rod clamp 101 as described above, the platform support 102 is used to accommodate the drill rod clamp 101, and the bottom plate of the platform support 102 is a shell fixing platform, the platform support 102 is used in combination with the drill rod clamp 101 to replace the rathole tube, so that the bevel angle of the drill rod is easy to adjust, and can adapt to drill rods of various specifications.

[0045] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A drill rod holder, characterized in that: include A housing, the housing being used for rotationally connecting with the housing fixing platform; A telescopic device, the telescopic device is arranged in the shell, and the telescopic device gradually tilts toward the outside of the central axis of the shell from bottom to top; Two slides arranged opposite to each other and slidably connected, the slides being slidably arranged on the housing, one end of at least one slide away from the other slide being connected to the telescopic device, and the two slides being able to approach or move away from each other in a horizontal direction; Two slips are arranged opposite to each other, the two slips are respectively fixedly connected to the two slides and are arranged inside the shell. The two slips can be close to each other for clamping the drill rod.

2. The drill rod holder according to claim 1, characterized in that: The shell and the shell fixing platform are rotatably connected via a first pin shaft, a first ear plate is provided at the bottom of the shell, a second ear plate is provided on the shell fixing platform, pin shaft holes are provided on the first ear plate and the second ear plate, and the first pin shaft can pass through the pin shaft hole to rotatably connect the first ear plate and the second ear plate.

3. The drill rod holder according to claim 2, characterized in that: Two second ear plates are arranged opposite to each other, and the first ear plate can be inserted between the two second ear plates arranged opposite to each other.

4. The drill rod holder according to claim 3, characterized in that: The bottom of the housing is provided with two pairs of the first ear plates and the second ear plates along the direction of the deflection axis of the housing.

5. The drill rod holder according to claim 1, characterized in that: The telescopic devices are provided with two, which are respectively located at two sides of the inside of the shell, and the two slides are respectively connected to a telescopic rod of the telescopic device.

6. The drill rod holder according to claim 5, characterized in that: The telescopic device is a telescopic oil cylinder.

7. The drill rod holder according to claim 1, characterized in that: The slip is fixed on the slide by a second pin.

8. The drill rod holder according to claim 1, characterized in that: The slips are arc-shaped slips, and the arc-shaped surfaces of the two arc-shaped slips are used for clamping the drill rod.

9. The drill rod holder according to claim 1, characterized in that: It also includes a reset spring, which is arranged on the side of the shell, and the side of the shell is different from the side in the deflection direction. The top of the reset spring is fixedly connected to the shell, and the bottom is fixedly connected to the shell fixing platform.

10. A rat hole clamping device, characterized in that: It comprises a platform support and a drill rod clamp as described in any one of claims 1 to 9, wherein the platform support is used to accommodate the drill rod clamp, and the bottom plate of the platform support is the shell fixing platform.

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