Rock core drill inclination clamp holder

Abstract

The utility model belongs to the field of rock core drill equipment, and relates to a rock core drill inclination clamp holder which comprises a protective plate, oil cylinders, guide rail plates and clamping blocks are symmetrically arranged in the protective plate, the guide rail plates are fixedly connected to the protective plate, and piston rods of the two oil cylinders are connected with sliding blocks in one-to-one correspondence with the guide rail plates through rod end pulling plates. The two clamping blocks are fixedly connected with the corresponding sliding blocks, the two rod end pulling plates are connected with a synchronous shaft and a synchronous sleeve respectively, and the synchronous shaft is connected with the synchronous sleeve in a sliding mode. According to the utility model, the drill rod can be clamped through the oil cylinder, meanwhile, the purpose of preventing the drill rod from moving up and down can still be achieved by virtue of the physical characteristics of the oil cylinder under the condition that the oil cylinder does not maintain pressure or oil leakage fails, and the situation that the drill rod falls into a well due to clamping failure when the drill rod is lifted can also be prevented.

Description

Technical Field

[0001] The utility model belongs to the field of core drill equipment and relates to a core drill inclination clamp. Background Art

[0002] The clamp is a component for loading and unloading drill rods of a core drilling rig. It moves in coordination with the core drilling rig power head to achieve docking, disengagement and drill bit removal between drill rods. At present, most of the clamps used on core drilling rigs are full-hole hydraulic tension clamps. The existing invention application patent with publication number CN104110226A, the core drilling rig clamp includes a base, a left rotating shaft, a right rotating shaft, a left arm and a right arm. The left rotating shaft and the right rotating shaft are respectively mounted on the base through a pair of bearings. One end of the left arm and the right arm are respectively mounted on the left rotating shaft and the right rotating shaft, and the other end is hinged with the slip for clamping the drill rod; the left rotating shaft or the right rotating shaft is driven to rotate by a hydraulic cylinder, and a connecting rod for making the left rotating shaft and the right rotating shaft rotate synchronously and in opposite directions is arranged between the left rotating shaft and the right rotating shaft.

[0003] The prior art has the following technical defects:

[0004] The above technical solution solves the problem that clamping cannot be performed when the oil cylinder fails. When the drill pipe is worn or the hydraulic system is abnormal, due to the linkage of the left arm and the right arm, with the help of the drill pipe's own gravity and the self-locking function of the wedge block, the slip moves downward, so that the slip is always attached to the inclined surface of the wedge block, so that the slip clamps the drill pipe. However, if it is lifted, the clamping function may fail, resulting in falling into the well when lifting the drill pipe. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a core drill inclination clamp.

[0006] The core drill inclination clamp described in the utility model comprises a guard plate, in which an oil cylinder, a guide plate and a clamping block are symmetrically arranged, the guide plate is fixedly connected to the guard plate, the piston rods of the two oil cylinders are connected to sliders corresponding to the guide plate one by one through rod end pull plates, the two clamping blocks are fixedly connected to the corresponding sliders, the two rod end pull plates are respectively connected to a synchronous shaft and a synchronous sleeve, and the synchronous shaft and the synchronous sleeve are slidably connected.

[0007] Working process or working principle:

[0008] When in use, oil is supplied to the rodless chambers of the two cylinders at the same time, and the piston rod drives the rod end pull plate to drive the slider to slide on the guide plate, thereby driving the clamping block to move upward. The inclined guide plate increases the distance between the two clamping blocks, so that the drill rod can pass through. Then, the clamping block is driven downward by the oil cylinder to reduce the distance between the two clamping blocks until it fits tightly with the drill rod to achieve clamping.

[0009] The two oil cylinders are respectively fixedly connected to the guard plate through corresponding oil cylinder fixing plates.

[0010] The working surface of the clamp block is provided with a friction tooth surface, which can increase the friction force of the contact surface when clamping the drill rod, thereby preventing the drill rod from rotating and moving up and down.

[0011] The two oil cylinders are arranged obliquely, and the inclined angle of the two oil cylinders is 20-40 degrees. When the inclined oil cylinder drives the clamping block to move downward, the clamping block can be clamped tighter and tighter with the drill rod.

[0012] The guard plate is provided with a support plate, the support plate is fixedly connected with a guide sleeve fixing plate, and the guide sleeve fixing plate is provided with a drill rod straightening assembly.

[0013] The drill rod straightening assembly comprises a straightening sleeve base fixedly connected to the guide sleeve fixing plate, a drill rod straightening sleeve is arranged in the straightening sleeve base, and a bearing is arranged between the drill rod straightening sleeve and the straightening sleeve base.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model can clamp the drill rod by the oil cylinder, and at the same time, can prevent the drill rod from moving up and down by virtue of its physical characteristics when the oil cylinder fails to maintain pressure or fails to maintain oil, and can also prevent the drill rod from falling into the well due to clamping failure when lifting the drill rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0017] Figure 2 It is a side view of an embodiment of the utility model.

[0018] Figure 3 It is a top view of an embodiment of the utility model.

[0019] In the figure: 1. Cylinder; 2. Guard plate; 3. Cylinder fixing plate; 4. Guide plate; 5. Slider; 6. Clamp block; 7. Rod end pull plate; 8. Synchronous shaft; 9. Synchronous sleeve; 10. Drill rod straightening sleeve; 11. Straightening sleeve base; 12. Bearing; 13. Support plate; 14. Guide sleeve fixing plate. DETAILED DESCRIPTION

[0020] Example 1

[0021] like Figure 1 to Figure 3As shown, the core drill inclination clamp described in the utility model includes a guard plate 2, in which a cylinder 1, a guide plate 4 and a clamping block 6 are symmetrically arranged, the guide plate 4 is fixedly connected to the guard plate 2, the piston rods of the two cylinders 1 are connected to a slider 5 corresponding to the guide plate 4 one by one through a rod end pull plate 7, the two clamping blocks 6 are fixedly connected to the corresponding sliders 5, the two rod end pull plates 7 are respectively connected to a synchronous shaft 8 and a synchronous sleeve 9, and the synchronous shaft 8 is slidably connected to the synchronous sleeve 9; the two cylinders 1 are respectively fixedly connected to the guard plate 2 through the corresponding cylinder fixing plates 3; the working surface of the clamping block 6 is provided with a friction tooth surface, which can increase the friction when clamping the drill rod. The friction force of the contact surface prevents the drill rod from rotating and moving up and down; the two oil cylinders 1 are tilted, and the tilt angle of the two oil cylinders 1 is 20-40°. When the tilted oil cylinder 1 drives the clamping block 6 to move downward, it can clamp the drill rod tighter and tighter; the guard plate 2 is provided with a support plate 13, and the support plate 13 is fixedly connected with a guide sleeve fixing plate 14, and the guide sleeve fixing plate 14 is provided with a drill rod straightening assembly; the drill rod straightening assembly includes a straightening sleeve base 11 fixedly connected to the guide sleeve fixing plate 14, a drill rod straightening sleeve 10 is provided in the straightening sleeve base 11, and a bearing 12 is provided between the drill rod straightening sleeve 10 and the straightening sleeve base 11.

[0022] Working process or working principle:

[0023] When in use, oil is supplied to the rodless chambers of the two oil cylinders 1 at the same time, and the piston rod drives the rod end pull plate 7 to drive the slider 5 to slide on the guide plate 4, thereby driving the clamping block 6 to move upward. The inclined guide plate 4 increases the distance between the two clamping blocks 6, so that the drill rod can pass through. Then, the clamping block 6 is driven downward by the oil cylinder 1 to reduce the distance between the two clamping blocks 6 until it fits tightly with the drill rod to achieve clamping. Since the guide plate 4 is inclined, when the oil cylinder 1 fails, the clamping block 6 can still maintain a clamped state under the gravity of the clamped drill rod, thereby preventing the drill rod from falling off and falling into the well.

[0024] Compared with the prior art, the beneficial effects of the utility model are:

[0025] The utility model can clamp the drill rod through the oil cylinder 1, and at the same time, when the oil cylinder 1 is not pressurized or leaks oil, it can still prevent the drill rod from moving up and down by virtue of its physical properties, and when lifting the drill rod, it can also prevent the drill rod from falling into the well due to clamping failure.

[0026] The description of the direction and relative position relationship of the structure in the present invention, such as the description of front, back, left, right, up, and down, does not constitute a limitation of the present invention, but is only for the convenience of description.

Claims

1. A core drill inclination clamp, characterized in that: The invention comprises a guard plate (2), wherein an oil cylinder (1), a guide plate (4) and a clamping block (6) are symmetrically arranged inside the guard plate (2), the guide plate (4) is fixedly connected to the guard plate (2), the piston rods of the two oil cylinders (1) are connected to sliders (5) corresponding to the guide plate (4) one by one through rod end pull plates (7), the two clamping blocks (6) are fixedly connected to the sliders (5) corresponding to the two rod end pull plates (7), the synchronous shaft (8) and the synchronous sleeve (9) are respectively connected to the two rod end pull plates (7), and the synchronous shaft (8) and the synchronous sleeve (9) are slidably connected.

2. The core drill inclination clamp according to claim 1, characterized in that: The two oil cylinders (1) are respectively fixedly connected to the guard plate (2) via corresponding oil cylinder fixing plates (3).

3. The core drill inclination clamp according to claim 2, characterized in that: A friction tooth surface is arranged inside the working surface of the clamping block (6).

4. The core drill inclination holder according to any one of claims 1 to 3, characterized in that: The two oil cylinders (1) are arranged tilted, and the tilt angle of the two oil cylinders (1) is 20-40°.

5. The core drill inclination holder according to claim 4, characterized in that: The guard plate (2) is provided with a support plate (13), the support plate (13) is fixedly connected with a guide sleeve fixing plate (14), and the guide sleeve fixing plate (14) is provided with a drill rod straightening assembly.

6. The core drill inclination holder according to claim 5, characterized in that: The drill rod straightening assembly comprises a straightening sleeve base (11) fixedly connected to a guide sleeve fixing plate (14), a drill rod straightening sleeve (10) is arranged inside the straightening sleeve base (11), and a bearing (12) is arranged between the drill rod straightening sleeve (10) and the straightening sleeve base (11).

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