Drill rod thread protecting cap assembling and disassembling device

Abstract

The invention discloses a drill rod thread protecting cap assembling and disassembling device which comprises a driving gear, the driving gear is in meshed connection with a driven gear, the driven gear is connected with a pair of clamping hoops, the clamping hoops are in an arc shape and are oppositely arranged in a surrounding mode, the clamping hoops are connected through a connecting screw rod, one end of the connecting screw rod is connected with a nut, and the driving gear drives the driven gear to rotate. And the clamping hoop can rotate. The screw protecting cap can be quickly assembled and disassembled only through operation of a single worker, the working intensity of the worker is reduced, and the assembling and disassembling efficiency of the screw protecting cap is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of drill rod transportation, and in particular relates to a drill rod thread cap loading and unloading device. Background Art

[0002] In oil drilling operations, in order to prevent the threads of the drill pipe from being damaged during transportation and loading and unloading, each drill pipe is equipped with thread protectors at both ends when it leaves the factory. The loading and unloading of the thread protectors is a time-consuming and labor-intensive process.

[0003] For example, at an oil drilling site, when using a drill string, the thread caps on the pipe string need to be removed manually by drilling workers. The tool usually used is a pipe clamp. As the depth of the well increases, the number of drill pipes used increases, and the workload of removing the thread caps increases accordingly. The workers' labor intensity is high and the efficiency is low. If there is poor coordination between personnel, safety accidents are prone to occur. Summary of the invention

[0004] The purpose of the present invention is to provide a drill pipe thread cap loading and unloading device, which can quickly complete the loading and unloading of the thread cap by only one worker, thereby reducing the work intensity of the worker and improving the loading and unloading efficiency of the thread cap.

[0005] The technical solution adopted by the present invention is a drill pipe thread protector loading and unloading device, which includes a driving gear, which is meshingly connected with a driven gear, and the driven gear is connected to a pair of clamps, the pair of clamps are arc-shaped, and are relatively arranged in an embracing manner. The clamps are connected by a connecting screw, and a nut is connected to one end of the connecting screw. The driven gear is driven to rotate by the driving gear to realize the rotational movement of the clamp.

[0006] The present invention is also characterized in that

[0007] A pair of slave connecting rods are hinged on the driven gear, and a main connecting rod is hinged on one end of the slave connecting rod away from the driven gear. The main connecting rods are respectively connected to corresponding clamps.

[0008] The driving gear and the driven gear are connected by a connecting and fixing rod, and an active bearing is arranged at one end of the connecting and fixing rod close to the driving gear, and the active bearing is connected to the driving gear;

[0009] A driven bearing is arranged at one end of the connecting and fixing rod close to the driven gear, and the driven bearing is connected to the driven gear.

[0010] The connecting and fixing rod is in a bent state, and the bending angle is 90°.

[0011] A tightening rod is hingedly connected to one end of the connecting screw rod away from the nut, and the spacing between the clamps on both sides is controlled by rotating the tightening rod.

[0012] The end surface of the driving gear is fixedly connected with a rocker.

[0013] The beneficial effects of the present invention are:

[0014] (1) The drill pipe thread protector loading and unloading device of the present invention clamps the thread protector through a clamp, and then converts the spiral motion during loading and unloading of the thread protector into a planar rotational motion through the cooperation of a connecting rod, a driven gear and a main gear, thereby greatly reducing the work intensity of the staff during loading and unloading of the thread protector, saving the loading and unloading time of the thread protector and improving the work efficiency; and the traditional pipe clamp has the risk of colliding with the drill pipe during loading and unloading of the thread protector, while the clamp of the present device clamps the thread protector and there is no need to adjust the clamping structure before completing the thread protector, thereby avoiding damage to the drill pipe.

[0015] (2) The drill pipe thread protector loading and unloading device of the present invention can make the clamp adapt to thread protectors of different diameters and lengths by adjusting the opening and closing angles of the main connecting rod and the slave connecting rod, thereby increasing the application scenarios of the device of the present invention, and the device is easy to operate and carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a drill pipe thread cap loading and unloading device of the present invention;

[0017] Figure 2 It is a top view of the drill rod thread cap loading and unloading device of the present invention.

[0018] In the figure, 1. driving gear, 2. driven gear, 3. rocker, 4. connecting rod, 5. driving bearing, 6. driven bearing, 7. main connecting rod, 8. slave connecting rod, 9. clamp, 10. nut, 11. connecting screw, 12. tightening rod. DETAILED DESCRIPTION

[0019] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1

[0021] like Figure 1 As shown, the drill pipe thread cap loading and unloading device disclosed in the present invention comprises a driving gear 1, the driving gear 1 is meshedly connected with a driven gear 2, the driven gear 2 is connected with a pair of clamps 9, the pair of clamps 9 are arc-shaped and relatively embracingly arranged; the arc of the clamps 9 fits the arc of the ellipse. The driving gear 1 drives the driven gear 2 to rotate, so that the clamps 9 can rotate.

[0022] The clamps 9 are connected by a connecting screw 11, one end of which is connected to a nut 10. By rotating the connecting screw 11, the connecting screw 11 moves relative to the nut 10, thereby adjusting the distance between the clamps 9 on both sides.

[0023] In order to improve the tightness of meshing between the driving gear 1 and the driven gear 2 and the flexibility during rotation, the driving gear 1 and the driven gear 2 are connected by a connecting and fixing rod 4. A driving bearing 5 is provided at one end of the connecting and fixing rod 4 close to the driving gear 1, and the driving bearing 5 is connected to the driving gear 1; a driven bearing 6 is provided at one end of the connecting and fixing rod 4 close to the driven gear 2, and the driven bearing 6 is connected to the driven gear 2.

[0024] That is, the connecting rod 4 plays a role of fixed support relative to the driving gear 1 and the driven gear 2, and by arranging corresponding driving bearings 5 ​​and driven bearings 6 at both ends of the connecting rod 4, the flexibility of the driving gear 1 and the driven gear 2 during rotation is improved to ensure smooth rotation.

[0025] Example 2

[0026] The drill pipe thread cap loading and unloading device disclosed in the present invention comprises a driving gear 1, the driving gear 1 is meshedly connected with a driven gear 2, the driven gear 2 is connected with a pair of clamps 9, the pair of clamps 9 are arc-shaped and relatively embracingly arranged; the arc of the clamps 9 fits the arc of the ellipse. The driving gear 1 drives the driven gear 2 to rotate, so that the clamps 9 can rotate.

[0027] The clamps 9 are connected by a connecting screw 11, one end of which is connected to a nut 10. By rotating the connecting screw 11, the connecting screw 11 moves relative to the nut 10, thereby adjusting the distance between the clamps 9 on both sides.

[0028] In order to improve the tightness of meshing between the driving gear 1 and the driven gear 2 and the flexibility during rotation, the driving gear 1 and the driven gear 2 are connected by a connecting and fixing rod 4. A driving bearing 5 is provided at one end of the connecting and fixing rod 4 close to the driving gear 1, and the driving bearing 5 is connected to the driving gear 1; a driven bearing 6 is provided at one end of the connecting and fixing rod 4 close to the driven gear 2, and the driven bearing 6 is connected to the driven gear 2.

[0029] That is, the connecting rod 4 plays a role of fixed support relative to the driving gear 1 and the driven gear 2, and by arranging corresponding driving bearings 5 ​​and driven bearings 6 at both ends of the connecting rod 4, the flexibility of the driving gear 1 and the driven gear 2 during rotation is improved to ensure smooth rotation.

[0030] Furthermore, the connecting and fixing rod 4 is in a bent state, and the bending angle is 90°. The bent setting of the connecting and fixing rod 4 converts the spiral motion when loading and unloading the thread protection cap into a planar rotation motion, which greatly reduces the work intensity of the staff when loading and unloading the thread protection cap, saves the loading and unloading time of the thread protection cap, and improves the work efficiency.

[0031] Example 3

[0032] like Figure 2 As shown, the drill pipe thread cap loading and unloading device disclosed in the present invention is based on Example 2, a pair of slave connecting rods 8 are hinged on the driven gear 2, and a main connecting rod 7 is hinged on one end of the slave connecting rod 8 away from the driven gear 2, and the main connecting rod 7 is respectively connected to the corresponding clamp 9. Through the relative rotation of the main connecting rod 7 and the slave connecting rod 8, the clamp 9 is controlled to move up and down relative to the driven gear 2.

[0033] In order to conveniently fix the spacing between the clamps 9 on both sides, a tightening rod 12 is hinged at one end of the connecting screw 11 away from the nut 10, and the tightening rod 12 is rotated to control and fix the spacing between the clamps 9 on both sides. By adjusting the opening and closing angles of the main connecting rod 7 and the slave connecting rod 8, the clamp 9 can be adapted to thread protectors of different diameters and lengths, increasing the application scenarios of the device, and the device is easy to operate and carry.

[0034] Furthermore, in order to facilitate workers to operate the driving gear 1 to rotate, a rocker 3 is fixedly connected to the end face of the driving gear 1 , and the rocker 3 is perpendicular to the end face of the driving gear 1 .

[0035] When the device is in use, the worker rotates the connecting screw 11 to increase the distance between the clamps 9 on both sides, then puts the clamps 9 onto the outside of the thread protector, rotates the connecting screw 11 in the opposite direction to reduce the distance between the clamps 9 until the clamps 9 clamp the thread protector, and then presses the tightening rod 12 to complete the tightening and clamping of the thread protector.

[0036] Then the driller rotates the driving gear 1 through the rocker 3, driving the driven gear to rotate. The clamp 9 rotates synchronously with the driven gear 2 under the action of the main connecting rod 7 and the slave connecting rod 8, and the thread protector rotates with the clamp 9, thereby completing the loading and unloading of the thread protector.

Claims

1. Drill pipe thread cap loading and unloading device, characterized in that: The invention comprises a driving gear (1), wherein the driving gear (1) is meshingly connected with a driven gear (2), wherein the driven gear (2) is connected with a pair of clamps (9), wherein the pair of clamps (9) are arc-shaped and are arranged to be relatively surrounded, wherein the clamps (9) are connected via a connecting screw (11), wherein one end of the connecting screw (11) is connected with a nut (10), and the driven gear (2) is driven to rotate via the driving gear (1), thereby realizing the rotational movement of the clamps (9).

2. The drill pipe thread cap loading and unloading device according to claim 1, characterized in that: A pair of slave connecting rods (8) are hinged on the driven gear (2), and a main connecting rod (7) is hinged at one end of the slave connecting rod (8) away from the driven gear (2), and the main connecting rod (7) is respectively connected to corresponding clamps (9).

3. The drill pipe thread cap loading and unloading device according to claim 1, characterized in that: The driving gear (1) and the driven gear (2) are connected via a connecting and fixing rod (4); an active bearing (5) is provided at one end of the connecting and fixing rod (4) close to the driving gear (1); and the active bearing (5) is connected to the driving gear (1); A driven bearing (6) is provided at one end of the connecting and fixing rod (4) close to the driven gear (2), and the driven bearing (6) is connected to the driven gear (2).

4. The drill pipe thread cap loading and unloading device according to claim 3, characterized in that: The connecting and fixing rod (4) is in a bent state, and the bending angle is 90°.

5. The drill pipe thread cap loading and unloading device according to claim 1, characterized in that: A tightening rod (12) is hingedly connected to one end of the connecting screw rod (11) away from the nut (10), and the spacing between the clamps (9) on both sides is controlled by rotating the tightening rod (12).

6. The drill pipe thread cap loading and unloading device according to claim 1, characterized in that: The end surface of the driving gear (1) is fixedly connected with a rocker (3).

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