Drill rod lifting device

Abstract

A drill pipe lifting device comprises a manipulator, a connecting wire rope and a steel cup arranged from top to bottom. The manipulator is formed by the first and second slips being matched. Each slip is provided with an arc-shaped slip body. An upper boss and a lower boss are provided on the outer side of the slip body. A locking part is provided at one end of the upper boss. The manipulator is also provided with a hinged long pin and a locking short pin. The hinged long pin passes through the upper boss and the lower boss of the two slips to hinge the two slips. The locking short pin passes through the slip locking parts of the two slips to lock the two slips. The steel cup is barrel-shaped. The steel cup is provided with a cup handle. A buckle ring is provided on the cup handle. The two ends of the connecting wire rope are respectively connected to the manipulator and the steel cup. The upper supporting ring of the manipulator is connected to the winch rope. The present invention has a simple structure and is easy to operate. Compared with the existing lifter, no mushroom head is needed, which simplifies the operation process. Compared with the rotary type of the power head, the cost of adding drill pipe can be greatly reduced. The present invention can reduce the manpower and material resources for on-site grouting, reduce production costs, and improve work efficiency.

Description

Technical Field

[0001] The invention relates to an auxiliary device for drilling, in particular to a drill rod lifter for a geological drilling core drill. Background Art

[0002] Core drilling rig is a kind of core drilling equipment, which is mainly used for the survey and exploration of metal and non-metallic solid minerals. In addition, it can also be used for engineering geological survey, hydrogeological survey, survey and exploration of oil and gas fields, and water well drilling. The drill rod lifter used in the core drilling rig is one of the auxiliary working devices used in the field of geological drilling, and is a special component with high safety and reliability in mechanical core drilling. In the drilling construction of the power head drilling rig, as the drilling goes deeper, it is necessary to frequently add and unscrew the drill rod. At present, the drill rod adding method mainly uses a wire rope to lift and manually buckle the power head after adding a mushroom head to the drill rod, or uses a power head head rotary type to add the drill rod. The former method requires the installation and removal of the mushroom head during the drill rod adding process, which is time-consuming and labor-intensive, affecting the drilling efficiency; the latter method requires a more complex drilling rig structure, and often requires the design of special tools for use with the power head to realize the transportation, clamping and lifting of the drill rod, which will greatly increase the economic cost of the drilling rig and its supporting mechanisms. Summary of the invention

[0003] The object of the present invention is to provide a drill rod lifter which has a simple structure, low cost and can conveniently connect a drill rod without using a mushroom head.

[0004] The problem described in the present invention is achieved by the following technical solution:

[0005] A drill pipe lifter comprises a manipulator, a connecting wire rope and a steel cup arranged from top to bottom, the manipulator is formed by a first slip and a second slip matched to each other, each slip is provided with an arc-shaped slip body, the outer sides of the slip bodies are provided with an upper boss and a lower boss, one end of the upper boss is provided with a locking portion extending away from the geometric center of the slip body, the manipulator is also provided with a hinged long pin and a locking short pin, the hinged long pin passes through the upper bosses of the two slips near the locking portion and the lower boss to hinge the two slips, the locking short pin passes through the slip locking portions of the two slips to lock the two slips, the manipulator is provided with an upper supporting ring and a lower supporting ring respectively at the top and bottom; the steel cup is barrel-shaped, a cup handle is provided on one side of the steel cup, a buckle is provided on the cup handle, two ends of the connecting wire rope are respectively connected to the lower supporting ring of the manipulator and the buckle of the steel cup, and the upper supporting ring of the manipulator is connected to the winch rope.

[0006] The above-mentioned drill pipe lifter, the cava body is a three-section structure of upper, middle and lower sections, the upper section is located at the upper part of the upper boss, the lower section is located at the lower part of the lower boss, and the middle section is located between the upper boss and the lower boss; the arc lengths of the upper and lower sections of the cava body of the first cava are smaller than the arc length of the middle section; the arc lengths of the upper and lower sections of the cava body of the second cava are greater than the arc length of the middle section; the spacing between the upper and lower bosses of the first cava is smaller than the spacing between the upper and lower bosses of the second cava; the locking parts of the first cava and the second cava are respectively provided with 8-shaped short pin shaft holes.

[0007] The drill rod lifter has three concentric annular grooves arranged in the steel cup from large to small, and each annular groove corresponds to a drill rod of different diameter.

[0008] The drill rod lifter has bushings on the inner walls of the first slip and the second slip, respectively.

[0009] The above-mentioned drill rod lifter, the length of the connecting wire rope is 0.5-0.8 times the length of the drill rod.

[0010] The drill rod lifter has a buckle ring located on the upper part of the cup handle away from the center of the steel cup, and an eccentric weight is provided on the upper part of the outer side of the steel cup corresponding to the cup handle.

[0011] The present invention aims to solve the problem that it is time-consuming and laborious to add drill rods to a core drill rig, and designs a simple and practical drill rod lifter. The lifter includes a manipulator, a steel cup, and a steel wire rope connecting the manipulator and the steel cup. The manipulator is mounted on the outside of the drill rod, and the steel cup is supported at the bottom of the drill rod. The manipulator is driven to move up along the drill rod as the winch of the drilling rig rotates. The manipulator drives the steel cup to lift the drill rod to a vertical state, and then the upper and lower ends of the drill rod are aligned and connected. The present invention has a simple structure, is easy to operate, and is easy to implement. Compared with the existing lifter, there is no need to use a mushroom head, which simplifies the operation process; compared with the power head head-up rotary type drill rod addition, the implementation cost can be greatly reduced. The use of the present invention can reduce the manpower and material resources required for on-site grouting, reduce production costs, and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] Figure 1 It is a schematic diagram of the use state of the present invention;

[0014] Figure 2 It is a three-dimensional diagram of the manipulator;

[0015] Figure 3 It is the main view of the robot;

[0016] Figure 4 yes Figure 3 Left view of;

[0017] Figure 5 It is a three-dimensional image of a steel cup;

[0018] Figure 6 It is a stereogram of the first kava;

[0019] Figure 7 It is a stereogram of the second slip;

[0020] Figure 8-Figure 10 They are schematic diagrams of the closed state of the manipulator when lifting drill rods of different diameters according to the present invention.

[0021] The numbers in the figure are: 1. power head; 2. winch rope, 3. power head main shaft reducer, 4. manipulator, 4-1. slip body, 4-2. upper boss, 4-3. lower boss, 4-4. locking part, 4-5. short pin shaft hole, 4-6. locking short pin shaft, 4-7. upper bearing ring, 4-8. hinged long pin shaft, 4-9. lower bearing ring, 4-10. bushing, 5. connecting rope, 6. drill pipe, 7. steel cup, 7-1. cup handle, 7-2, 7-3, ring groove, 7-4, counterweight, 8. drill pipe clamp, K1, first slip, K2, first slip. DETAILED DESCRIPTION

[0022] See also Figure 1 The present invention includes a manipulator 4, a connecting wire rope 5 and a steel cup. The manipulator can be in an open or closed state. When the drill rod is connected, the manipulator is in a closed state and is sleeved on the outside of the drill rod 6. The upper part of the manipulator is connected to the winch via the winch wire rope 2, and the lower part of the manipulator is connected to the steel cup via the connecting wire rope 5. The steel cup is sleeved on the bottom of the drill rod to hold up the bottom of the drill rod.

[0023] See also Figure 2-4 and Figure 6 , Figure 7The manipulator is formed by a first cava K1 and a second cava K2 that are hinged to each other. Each cava is provided with a cava body 4-1 of an arc plate, and the outer side of the cava body is provided with an upper boss 4-2 and a lower boss 4-3 that are approximately semicircular. One end (hinged end) of the upper boss is provided with a locking portion 4-4 that extends away from the geometric center of the cava body. The manipulator is also provided with a long hinge pin 4-8 for hingedly connecting the two cava and a short locking pin 4-6 for locking the state of the two cava. The long hinge pin passes through the upper boss of the two cava near the locking portion and the lower boss to hinge the two cava. The short locking pin passes through the cava locking portion of the two cava to lock the two cava. In order to be applicable to drill rods of different diameters, the first slip and the second slip locking parts are respectively provided with two 8-shaped short pin holes 4-5 connected together, and the short pin holes have two holes for installing the pins. By adjusting the upper and lower corresponding positions of the short pin holes of the first slip and the second slip, different locking states of the slips can be obtained. The upper and lower parts of the manipulator are respectively provided with an upper support ring 4-7 for installing the winch steel rope and a lower support ring 4-9 for installing the connecting steel rope. In order to adapt to the embrace of drill rods of different diameters, the slip body is designed as an upper, middle and lower three-section structure, the upper section is located at the upper part of the upper boss, the lower section is located at the lower part of the lower boss, and the middle section is located between the upper boss and the lower boss. The arc length of the upper and lower sections of the slip body of the first slip is smaller than the arc length of the middle section (that is, the width of the upper and lower sections of the slip body is smaller than the width of the middle section); the arc length of the upper and lower sections of the slip body of the second slip is greater than the arc length of the middle section (that is, the width of the upper and lower sections of the slip body is greater than the width of the middle section). The distance between the upper and lower bosses of the first slip is smaller than that of the upper and lower bosses of the second slip. When the slip is in the closed state, the upper and lower bosses of the first slip are located between the upper and lower bosses of the second slip. The arc lengths of the upper and lower sections of the slip body of the first slip correspond to a central angle of its geometric center of 75°-85°, and the middle section of the slip body of the first slip corresponds to a central angle of its geometric center of 150°-160°; the arc lengths of the upper and lower sections of the slip body of the second slip correspond to a central angle of its geometric center of 150°-160°, and the middle section of the slip body of the second slip corresponds to a central angle of its geometric center of 75°-85°. The structural design of the slip of the present invention can contain the outer wall of the large diameter drill pipe when the manipulator is used to lift the large diameter drill pipe in the closed state of the slip; when the manipulator is used to lift the small diameter drill pipe, the two slips can both hold the drill pipe together without interfering with each other in the closed state.

[0024] Figure 8 The figure shows the state schematic diagram of the slips of the present invention when used to lift a drill pipe with a diameter of 73 mm. In this state, the locking short pin shaft penetrates into the right hole position of the short pin shaft hole of the first slip and the left hole position of the short pin shaft hole of the second slip.

[0025] Fig. 9The figure shows the state schematic diagram of the slips of the present invention when used to lift a drill pipe with a diameter of 89 mm. In this state, the locking short pin shaft penetrates into the left hole position of the first slip short pin shaft hole and the left hole position of the second slip short pin shaft hole.

[0026] Fig.10 As shown, it is a schematic diagram of the state of the slip when the present invention is used to lift a drill pipe with a diameter of 114 mm. In this state, the locking short pin shaft penetrates into the left hole position of the short pin shaft hole of the first slip shaft and the right hole position of the short pin shaft hole of the second slip shaft.

[0027] See also Figure 5 The steel cup is barrel-shaped, and three concentric annular grooves 7-3 are arranged in the steel cup from large to small, and each annular groove corresponds to a drill rod of different diameters. A cup handle 7-1 is arranged on one side of the steel cup, and a buckle ring 7-2 for installing and connecting a steel rope is arranged on the cup handle. The buckle ring is located at the upper part of the cup handle away from the center of the steel cup, and an eccentric counterweight 7-4 is arranged on the upper part of the outer side of the cup handle corresponding to the steel cup. The eccentric counterweight is arranged to facilitate the steel cup to deviate in the direction away from the drill rod when it is suspended by the connecting steel rope after it is separated from the drill rod.

[0028] See also Figure 6 In order to reduce the friction resistance between the manipulator and the drill pipe and prevent the outer surface of the drill pipe from being scratched, nylon bushings 4-10 are respectively provided on the inner walls of the first slip and the second slip.

[0029] See also Figure 1 The working process of the present invention is as follows: when it is necessary to add a drill rod, the winch steel rope 2 is hung on the upper support ring of the manipulator; the locking short pin is pulled out to open the two slips of the manipulator, the manipulator is put on the drill rod, the two slips are closed, the locking short pin is installed to a suitable position according to the diameter of the drill rod, and the closed state of the slips is locked; the steel cup is put on the lower end of the drill rod 6 so that the bottom of the drill rod enters the annular groove matching the diameter of the drill rod; the winch drives the manipulator to move up along the drill rod, and as the manipulator After sliding on the drill rod, the connecting steel rope 5 is tightened and the drill rod is lifted to a vertical state; the upper joint of the drill rod is aligned with the main shaft reducer 3 of the power head, the power head rotates forward, and the drill rod is screwed into the main shaft reducer of the power head through the thread; the winch rope is lowered, and the manipulator slides down along the drill rod, the steel cup is first separated from the drill rod, and then the manipulator is separated from the drill rod; the power head slides downward until the lower joint of the drill rod is aligned with the drill rod in the clamp 8, and the power head rotates forward until the drill rod in the hole is screwed on. The above process can lift the drill rod without the help of a mushroom head, which greatly reduces the manpower and material resources of on-site operation.

Claims

1. A drill rod lifter, characterized in that: The invention comprises a manipulator (4), a connecting wire rope (5) and a steel cup arranged from top to bottom. The manipulator is formed by a first slip (K1) and a second slip (K2) which are matched with each other. Each slip is provided with an arc-shaped slip body (4-1). An upper boss (4-2) and a lower boss (4-3) are provided on the outer side of the slip body. A locking part (4-4) extending away from the geometric center of the slip body is provided at one end of the upper boss. The manipulator is also provided with a long hinge pin (4-8) and a short locking pin (4-6). The long hinged pin passes through the upper bosses of the two slips near the locking part and the lower boss to hinge the two slips, and the short locking pin passes through the slip locking parts of the two slips to lock the two slips. The upper and lower parts of the manipulator are respectively provided with an upper support ring (4-7) and a lower support ring (4-9); the steel cup is barrel-shaped, and a cup handle (7-1) is provided on one side of the steel cup, and a buckle (7-2) is provided on the cup handle. The two ends of the connecting wire rope are respectively connected to the lower support ring of the manipulator and the buckle of the steel cup, and the upper support ring of the manipulator is connected to the winch steel rope (2); The slip body is a three-section structure of upper, middle and lower sections, the upper section is located at the upper part of the upper boss, the lower section is located at the lower part of the lower boss, and the middle section is located between the upper boss and the lower boss; the arc lengths of the upper and lower sections of the slip body of the first slip are smaller than the arc length of the middle section; the arc lengths of the upper and lower sections of the slip body of the second slip are larger than the arc length of the middle section; the spacing between the upper and lower bosses of the first slip is smaller than the spacing between the upper and lower bosses of the second slip; the first slip and the second slip are respectively provided with 8-shaped short pin shaft holes (4-5) at their locking positions; The central angle of the geometric center corresponding to the arc length of the upper and lower sections of the cava body of the first cava is 75°-85°, and the central angle of the geometric center corresponding to the middle section of the cava body of the first cava is 150°-160°; the central angle of the geometric center corresponding to the arc length of the upper and lower sections of the cava body of the second cava is 150°-160°, and the central angle of the geometric center corresponding to the middle section of the cava body of the second cava is 75°-85°.

2. The drill rod lifter according to claim 1, characterized in that: The steel cup is provided with three concentric annular grooves (7-3) from large to small, and each annular groove corresponds to a drill rod of different diameter.

3. The drill rod lifter according to claim 2, characterized in that: Bushings (4-10) are respectively provided on the inner walls of the first slip and the second slip.

4. The drill rod lifter according to claim 3, characterized in that: The length of the connecting wire rope is 0.5-0.8 times the length of the drill rod.

5. The drill rod lifter according to claim 4, characterized in that: The buckle ring is located at the upper part of the cup handle away from the center of the steel cup, and an eccentric counterweight (7-4) of the steel cup is arranged on the upper part of the outer side of the steel cup corresponding to the cup handle.

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