An electric-driven drilling and workover rig with a capacity-increasing, emission-reducing and energy-saving device

Abstract

The present invention discloses an electric-driven drilling and workover rig with a capacity-increasing, emission-reducing and energy-saving device, which includes a base. A support assembly is arranged on the base, a guiding assembly is arranged at the movable end of the support assembly, a lifting assembly is arranged on the guiding assembly, a driving part is arranged at the movable end of the lifting assembly, and a drill pipe is arranged on the driving part. In the present invention, a connecting block is connected to the drill pipe. When the drill pipe rotates at different speeds, the centrifugal force received by the connecting block is different. Through cooperation with the guiding seat, the connecting block can move along the inner wall of the trumpet-shaped through groove of the guiding seat, and further, by adjusting the resistance value of the variable resistance assembly, the magnitude of the output voltage of the capacitor bank is adjusted. When the impact load on the drill pipe is large, the capacitor bank discharges to share the impact load, thereby reducing the incomplete combustion of fuel, and playing a role in energy conservation, emission reduction and voltage stabilization, so that the drilling rig equipment can operate stably.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling rig equipment, and in particular to an electric-driven drilling and workover rig with a capacity-increasing, emission-reducing and energy-saving device. Background Art

[0002] During the oilfield development and exploitation process, a drilling rig is an important development and exploitation equipment. In oil exploration or oil resource development, an oil drilling rig drives a drill string to drill into the ground to obtain physical geological data. The main function of an oil drilling rig is to drive a drill string to break the rock at the bottom of a hole and lower or raise the drill string in the hole. It can be used to drill core samples, ore samples, cuttings, gaseous samples, liquid samples, etc. to explore the underground geology and oil resources.

[0003] The composition of a drilling rig equipment includes a hoisting system, a rotary system, a circulation system, a power system, a transmission system, a control system, a base and auxiliary equipment. Among them, the power system usually includes an electric motor and a diesel engine. With the continuous increase in the price of fossil energy, the fuel consumption cost of the drilling rig operation gradually increases. Therefore, in order to reduce the enterprise cost, an energy-saving electric-driven drilling rig equipment is needed. Summary of the Invention

[0004] The purpose of the present invention is to provide an electric-driven drilling and workover rig with a capacity-increasing, emission-reducing and energy-saving device to solve the above problems.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An electric drive drilling and workover rig with a capacity-increasing, emission-reducing and energy-saving device, comprising a base, a support assembly is arranged on the base, a guiding assembly is arranged at the movable end of the support assembly, a lifting assembly is arranged on the guiding assembly, a driving part is arranged at the movable end of the lifting assembly, and a drill pipe is arranged on the driving part; the driving part comprises a housing, a driving member is arranged on the housing, and a capacitor bank and a resistance value adjusting mechanism are arranged inside the housing, the drill pipe penetrates through the housing and is in transmission connection with the driving member; the resistance value adjusting mechanism comprises a variable resistor assembly and a centrifugal driving assembly, the variable resistor assembly is electrically connected with the capacitor bank, and the centrifugal driving assembly is arranged outside the drill pipe; the variable resistor assembly comprises a mounting plate, a pipe body is arranged on the mounting plate, a resistance wire is arranged on the surface of the pipe body, and a sliding seat is arranged outside the pipe body, and a conductive sheet in contact with the resistance wire is arranged inside the sliding seat; the centrifugal driving assembly comprises a first sliding sleeve, a first connecting rod is arranged on the outer periphery of the first sliding sleeve, a guiding member with an annular structure is arranged at one end of the first connecting rod far away from the drill pipe, a connecting seat sleeved on the guiding member is arranged on the sliding seat, a second sliding sleeve is arranged on the first connecting rod, and a second connecting rod is arranged on the second sliding sleeve, a connecting block is arranged at one end of the second connecting rod far away from the second sliding sleeve, a guiding seat is arranged on the outer periphery of the drill pipe, and a horn-shaped through groove is arranged inside the guiding seat.

[0007] Preferably, there are two mounting plates, the two mounting plates are respectively fixedly connected to the axial two ends of the pipe body, the resistance wire is spirally wound on the surface of the pipe body, a first sliding rod is fixedly connected between the two mounting plates, the first sliding rod penetrates through the sliding seat and is in sliding connection with the sliding seat.

[0008] Preferably, there are multiple first connecting rods, and they are annularly and evenly distributed on the outer periphery of the first sliding sleeve. The two ends of the first connecting rod are respectively fixedly connected to the first sliding sleeve and the guiding member. The two ends of the second connecting rod are respectively fixedly connected to the second sliding sleeve and the connecting block. One side of the connecting block close to the inner wall of the through groove is an inclined surface, and a first ball is arranged on the inclined surface of the connecting block. The inner diameter of the upper end opening of the through groove is larger than the inner diameter of the lower end opening. The first ball is in rolling contact with the inner wall of the through groove.

[0009] Preferably, the connecting seat is of an annular structure, and there is a notch on the side far away from the sliding seat. A second ball is arranged inside the connecting seat, a first rolling groove in rolling contact with the second ball is arranged on the surface of the guiding member, a third ball is arranged inside the first sliding sleeve, and a second rolling groove in rolling contact with the third ball is arranged on the surface of the drill pipe.

[0010] Preferably, the first rolling groove is an annular structure that winds around the guiding member for one week, and the second rolling groove is a linear structure extending along the axial direction of the drill pipe.

[0011] Preferably, a fixing plate is arranged between the driving member and the movable end of the lifting assembly. The output end of the driving member is in transmission connection with the drill pipe through a buffer assembly. The buffer assembly is located inside the housing, and a generator assembly interlocked with the buffer assembly is arranged in the housing.

[0012] Preferably, the buffer assembly includes two connecting plates. A first spring and a telescopic member are arranged between the two connecting plates. A plurality of first springs are provided and are evenly distributed annularly on the outer periphery of the telescopic member. One of the connecting plates is fixedly connected to the output end of the driving member, and the other connecting plate is fixedly connected to the end of the drill pipe.

[0013] Preferably, a ratchet wheel is rotatably connected to the fixed section of the telescopic member, and a second sliding rod is fixedly connected to the telescopic section of the telescopic member. A stopper is fixedly connected to the end of the second sliding rod away from the telescopic member. A second spring is arranged on the stopper, and the telescopic end of the second spring is fixedly connected to a third sliding sleeve. The third sliding sleeve is sleeved on the outer side of the second sliding rod, and a pawl is rotatably connected to the third sliding sleeve through a torsion spring.

[0014] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0015] 1. In this application, a capacitor bank is arranged on the driving mechanism of the drilling rig equipment, and a connecting block and a guiding seat are arranged on the outer periphery of the drill pipe. The connecting block is connected to the drill pipe. When the drill pipe rotates at different speeds, the centrifugal force received by the connecting block is different. Through cooperation with the guiding seat, the connecting block can move along the inner wall of the trumpet-shaped through groove of the guiding seat, and then by adjusting the resistance value of the variable resistance component, the magnitude of the output voltage of the capacitor bank is adjusted. When the impact load on the drill pipe is large, the impact load is shared by the discharge of the capacitor bank, thereby reducing the incomplete combustion of fuel and playing a role in energy conservation, emission reduction and voltage stabilization, so that the drilling rig equipment can operate stably.

[0016] 2. In this application, by arranging a buffer assembly and a generator device, it can be realized that when the drill pipe vibrates, the kinetic energy generated by the elastic force of the buffer assembly is converted into electric energy and stored in the capacitor bank. A ratchet wheel is arranged on the buffer assembly, and a pawl that can push it to rotate is arranged on the ratchet wheel. The self-rotation of the ratchet wheel further drives the input end of the generator device to rotate, so that the generator device stores the electric energy in the capacitor bank. Therefore, this drilling rig equipment can achieve energy-saving operation, effectively reduce fuel consumption, and save costs for enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shows a schematic diagram of the overall structure of the drilling rig equipment provided by an embodiment of the present invention;

[0018] Figure 2Shows a schematic diagram of a drill pipe drive structure provided according to an embodiment of the present invention;

[0019] Figure 3 Shows a schematic diagram of a resistance value adjusting mechanism structure provided according to an embodiment of the present invention;

[0020] Figure 4 Shows a schematic diagram of the cooperation structure of a connecting seat and a guiding member provided according to an embodiment of the present invention;

[0021] Figure 5 Shows a schematic cross-sectional structure of the cooperation between a drill pipe and a first sliding sleeve provided according to an embodiment of the present invention;

[0022] Figure 6 Shows a schematic diagram of a buffer assembly structure provided according to an embodiment of the present invention;

[0023] Figure 7 Shows Figure 6 An enlarged schematic diagram of part A in

[0024] Legend:

[0025] 1. Base; 2. Support assembly; 3. Guiding assembly; 4. Lifting assembly; 5. Fixed plate; 6. Driving member; 7. Housing; 8. Drill pipe; 9. Mounting plate; 10. Pipe body; 11. Resistance wire; 12. First sliding rod; 13. Slide seat; 14. Connecting seat; 15. First sliding sleeve; 16. First connecting rod; 17. Guiding member; 18. Second sliding sleeve; 19. Second connecting rod; 20. Connecting block; 21. Guiding seat; 22. First ball; 23. Second ball; 24. First rolling groove; 25. Third ball; 26. Second rolling groove; 27. Connecting plate; 28. First spring; 29. Telescopic member; 30. Ratchet; 31. Second sliding rod; 32. Stopper; 33. Second spring; 34. Third sliding sleeve; 35. Claw; 36. Capacitor bank. Detailed implementation manners

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0028] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "install", "connect", "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The present invention will be further described below with reference to the drawings and specific embodiments.

[0030] Please refer to Figures 1 to 7 , the present invention provides a technical solution:

[0031] An electric drive drilling and workover rig with a capacity-increasing, emission-reducing and energy-saving device, comprising a base 1, a support assembly 2 is arranged on the base 1, a guiding assembly 3 is arranged at the movable end of the support assembly 2, a lifting assembly 4 is arranged on the guiding assembly 3, a driving part is arranged at the movable end of the lifting assembly 4, and a drill pipe 8 is arranged on the driving part; the driving part includes a housing 7, a driving member 6 is arranged on the housing 7, and a capacitor bank 36 and a resistance value adjusting mechanism are arranged inside the housing 7, the drill pipe 8 penetrates through the housing 7 and is in transmission connection with the driving member 6; the capacitor bank 36 is electrically connected to the resistance value adjusting mechanism and the driving member 6 in sequence, and the capacitor bank 36 can provide additional electric energy for the driving member 6. The resistance value adjusting mechanism includes a rheostat assembly and a centrifugal driving assembly, the rheostat assembly is electrically connected to the capacitor bank 36, and the centrifugal driving assembly is arranged outside the drill pipe 8; the rheostat assembly includes a mounting plate 9, a pipe body 10 is arranged on the mounting plate 9, a resistance wire 11 is arranged on the surface of the pipe body 10, and a sliding seat 13 is arranged outside the pipe body 10, and a conductive sheet in contact with the resistance wire 11 is arranged inside the sliding seat 13; the centrifugal driving assembly includes a first sliding sleeve 15, a first connecting rod 16 is arranged on the outer periphery of the first sliding sleeve 15, a guiding member 17 with an annular structure is arranged at one end of the first connecting rod 16 far away from the drill pipe 8, a connecting seat 14 sleeved on the guiding member 17 is arranged on the sliding seat 13, a second sliding sleeve 18 is arranged on the first connecting rod 16, and a second connecting rod 19 is arranged on the second sliding sleeve 18, a connecting block 20 is arranged at one end of the second connecting rod 19 far away from the second sliding sleeve 18, and a guiding seat 21 is arranged on the outer periphery of the drill pipe 8, and a trumpet-shaped through groove is arranged inside the guiding seat 21.

[0032] Specifically, such as Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, there are two mounting plates 9, which are respectively fixedly connected to the axial ends of the pipe body 10. The resistance wire 11 is spirally wound around the surface of the pipe body 10. A first sliding rod 12 is fixedly connected between the two mounting plates 9. The first sliding rod 12 passes through the sliding seat 13 and the two are slidably connected. There are multiple first connecting rods 16, which are annularly and evenly distributed on the outer periphery of the first sliding sleeve 15. The two ends of the first connecting rod 16 are respectively fixedly connected to the first sliding sleeve 15 and the guiding member 17. The two ends of the second connecting rod 19 are respectively fixedly connected to the second sliding sleeve 18 and the connecting block 20. One side of the connecting block 20 close to the inner wall of the through groove is an inclined surface, and a first ball 22 is arranged on the inclined surface of the connecting block 20. The inner diameter of the upper opening of the through groove is larger than the inner diameter of the lower opening. The first ball 22 is in rolling contact with the inner wall of the through groove. The connecting seat 14 is of an annular structure and has a notch on the side away from the sliding seat 13. A second ball 23 is arranged inside the connecting seat 14. A first rolling groove 24 in rolling contact with the second ball 23 is arranged on the surface of the guiding member 17. A third ball 25 is arranged inside the first sliding sleeve 15. A second rolling groove 26 in rolling contact with the third ball 25 is arranged on the surface of the drill rod 8. The first rolling groove 24 is an annular structure that winds around the guiding member 17 for one week. The second rolling groove 26 is a linear structure extending along the axial direction of the drill rod 8. The third ball 25 is located in the second rolling groove 26. When the drill rod 8 rotates, it can drive the first sliding sleeve 15 to rotate synchronously, and further make the guiding member 17 rotate synchronously through the first connecting rod 16. The second ball 23 rolls in the first rolling groove 24, which can reduce friction and energy loss. The connecting block 20 rotates with the drill rod 8, and it moves upward along the through groove under the action of centrifugal force, and jacks up the guiding member 17 through the second connecting rod 19, so that the first sliding sleeve 15 moves upward along the axial direction of the drill rod 8. After the load on the drill rod 8 increases, its rotation speed will decrease, and the centrifugal force received by the connecting block 20 decreases. Therefore, the connecting block 20 moves downward along the through groove, and the sliding seat 13 moves downward accordingly, further reducing the resistance value of the resistance wire 11 connected to the circuit. At this time, the voltage released by the capacitor bank 36 gradually increases. Therefore, the additional voltage applied to the driving member 6 can increase the output power of the driving member 6, and further restore the rotation speed of the drill rod 8.

[0033] Specifically, as Figure 2 , Figure 6 and Figure 7As shown, a fixed plate 5 is disposed between the driver 6 and the movable end of the lifting assembly 4. The movable end of the lifting assembly 4 is fixedly connected to the fixed plate 5, which is in turn fixedly connected to the housing 7. Therefore, the housing 7 can be moved along the guide assembly 3 by the lifting assembly 4. The output end of the driver 6 is transmission-connected to the drill rod 8 via a buffer assembly. The power of the driver 6 is transmitted to the drill rod 8 via the buffer assembly, thereby causing the drill rod 8 to rotate. The buffer assembly is located within the housing 7 and houses a generator assembly that is coupled to the buffer assembly. The generator assembly is electrically connected to a capacitor bank 36, thereby charging the capacitor bank 36. This charging process converts the kinetic energy generated by the elastic force of the buffer assembly into electrical energy. The buffer assembly includes two connecting plates 27. A first spring 28 and a telescopic member 29 are disposed between the two connecting plates 27. Multiple first springs 28 are provided and evenly distributed in an annular pattern around the periphery of the telescopic member 29. One connecting plate 27 is fixedly connected to the output end of the driver 6, while the other connecting plate 27 is fixedly connected to the end of the drill rod 8. The telescopic member 29 connects the two connecting plates 27. When the movement of the drill rod 8 is obstructed, the first spring 28 absorbs the impact by contracting, causing the telescopic member 29 to retract. A ratchet 30 is rotatably connected to the fixed section of the telescopic member 29. A second slide bar 31 is fixedly connected to the telescopic section of the telescopic member 29. A stopper 32 is fixedly connected to the end of the second slide bar 31 away from the telescopic member 29. A second spring 33 is provided on the stopper 32. The telescopic end of the second spring 33 is fixedly connected to a third sleeve 34. The third sleeve 34 is sleeved on the outside of the second slide bar 31. A claw 35 is rotatably connected to the third sleeve 34 via a torsion spring. When the telescopic member 29 retracts, the pawl 35 approaches the center of the ratchet 30 and engages with the outer teeth of the ratchet 30, causing it to rotate. Simultaneously, the third sleeve 34 moves along the second slide bar 31, gradually moving away from the telescopic member 29 and compressing the second spring 33. After the telescopic member 29 returns to its original position, the second spring 33 pushes the third sleeve 34 back to its original position, while the torsion spring maintains the pawl 35 facing downward. The ratchet 30 is fixedly connected to the input terminal of the generator device. Its rotation causes the generator device to charge the capacitor bank 36.

[0034] In summary, for the electric-driven drilling and workover rig with a capacity-increasing, emission-reducing and energy-saving device provided in this embodiment, when the rig is operating, the driving member 6 drives the drill pipe 8 to rotate, and the drill pipe 8 further drives the guiding member 17 to rotate, causing the connecting block 20 to rotate around the drill pipe 8. Under the action of centrifugal force, the connecting block 20 moves away from the drill pipe 8 and moves along the through groove inside the guiding seat 21 to the upper part of the through groove. After the impact load on the drill pipe 8 increases, the rotation speed of the drill pipe 8 decreases, and the centrifugal force received by the connecting block 20 decreases. Therefore, the connecting block 20 moves downward along the through groove, and at the same time, the sliding seat 13 moves downward along the pipe body 10. At this time, the number of resistance wires 11 connected to the capacitor bank 36 decreases, and the voltage applied by the capacitor bank 36 to the driving member 6 gradually increases, so that the output end of the driving member 6 drives the drill pipe 8 to increase speed and the rotation speed of the drill pipe 8 is restored, and the impact load is shared by the discharge of the capacitor bank 36.

[0035] The foregoing description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electric drive drilling and workover rig with a capacity-increasing, emission-reducing and energy-saving device, comprising a base (1), a support assembly (2) is arranged on the base (1), a movable end of the support assembly (2) is provided with a guiding assembly (3), and a lifting assembly (4) is arranged on the guiding assembly (3), characterized in that, A driving part is arranged on the movable end of the lifting component (4), and a drill pipe (8) is arranged on the driving part; The driving part includes a housing (7), a driving member (6) is arranged on the housing (7), and a capacitor bank (36) and a resistance value adjusting mechanism are arranged inside the housing (7). The drill pipe (8) penetrates through the housing (7) and is in transmission connection with the driving member (6); The resistance value adjusting mechanism includes a variable resistor component and a centrifugal driving component. The variable resistor component is electrically connected to the capacitor bank (36), and the centrifugal driving component is arranged outside the drill pipe (8); The variable resistor component includes a mounting plate (9). A pipe body (10) is arranged on the mounting plate (9). A resistance wire (11) is arranged on the surface of the pipe body (10), and a sliding seat (13) is arranged outside the pipe body (10). A conductive sheet in contact with the resistance wire (11) is arranged inside the sliding seat (13); The centrifugal driving component includes a first sliding sleeve (15). A first connecting rod (16) is arranged on the outer periphery of the first sliding sleeve (15). A guiding member (17) with an annular structure is arranged at one end of the first connecting rod (16) away from the drill pipe (8). A connecting seat (14) sleeved on the guiding member (17) is arranged on the sliding seat (13). A second sliding sleeve (18) is arranged on the first connecting rod (16), and a second connecting rod (19) is arranged on the second sliding sleeve (18). A connecting block (20) is arranged at one end of the second connecting rod (19) away from the second sliding sleeve (18). A guiding seat (21) is arranged on the outer periphery of the drill pipe (8), and a trumpet-shaped through groove is arranged inside the guiding seat (21).

2. The electric-driven drilling and workover rig with a capacity-increasing, emission-reducing and energy-saving device according to claim 1, wherein There are two mounting plates (9). The two mounting plates (9) are respectively fixedly connected to the axial two ends of the pipe body (10). The resistance wire (11) is spirally wound on the surface of the pipe body (10). A first sliding rod (12) is fixedly connected between the two mounting plates (9). The first sliding rod (12) penetrates through the sliding seat (13) and the two are slidably connected.

3. An electric-driven drilling and workover rig with a capacity-increasing, emission-reducing and energy-saving device according to claim 1, characterized in that, There are multiple first connecting rods (16), and they are annularly and evenly distributed on the outer periphery of the first sliding sleeve (15). The two ends of the first connecting rod (16) are respectively fixedly connected to the first sliding sleeve (15) and the guiding member (17). The two ends of the second connecting rod (19) are respectively fixedly connected to the second sliding sleeve (18) and the connecting block (20). One side of the connecting block (20) close to the inner wall of the through groove is an inclined surface, and a first ball (22) is arranged on the inclined surface of the connecting block (20). The inner diameter of the upper end opening of the through groove is larger than the inner diameter of the lower end opening. The first ball (22) is in rolling contact with the inner wall of the through groove.

4. An electric-driven drilling and workover rig with a capacity-increasing, emission-reducing and energy-saving device according to claim 1, characterized in that, The connecting seat (14) is of an annular structure, and has a notch on the side away from the sliding seat (13). A second ball (23) is arranged inside the connecting seat (14). A first rolling groove (24) for rolling contact with the second ball (23) is arranged on the surface of the guiding member (17). A third ball (25) is arranged inside the first sliding sleeve (15). A second rolling groove (26) for rolling contact with the third ball (25) is arranged on the surface of the drill pipe (8).

5. The electric-driven drilling and workover rig with a capacity-increasing, emission-reducing and energy-saving device according to claim 4, characterized in that, The first rolling groove (24) is of an annular structure that winds around the guiding member (17) for one week. The second rolling groove (26) is of a linear structure extending along the axial direction of the drill pipe (8).

6. The electric-driven drilling and workover rig with a capacity-increasing, emission-reducing and energy-saving device according to claim 1, characterized in that, A fixing plate (5) is arranged between the driving member (6) and the movable end of the lifting assembly (4). The output end of the driving member (6) is in transmission connection with the drill pipe (8) through a buffer assembly. The buffer assembly is located inside the housing (7), and a generator assembly interlocked with the buffer assembly is arranged inside the housing (7).

7. The electric-driven drilling and workover rig with a capacity-increasing, emission-reducing and energy-saving device according to claim 6, characterized in that, The buffer assembly includes two connecting plates (27). A first spring (28) and a telescopic member (29) are arranged between the two connecting plates (27). A plurality of first springs (28) are provided and are annularly and evenly distributed on the outer periphery of the telescopic member (29). One connecting plate (27) is fixedly connected to the output end of the driving member (6), and the other connecting plate (27) is fixedly connected to the end of the drill pipe (8).

8. An electric drive drilling and workover rig with a capacity increasing, emission reducing and energy saving device according to claim 7, characterized in that, A ratchet wheel (30) is rotatably connected to the fixed section of the telescopic member (29). A second sliding rod (31) is fixedly connected to the telescopic section of the telescopic member (29). A stop block (32) is fixedly connected to the end of the second sliding rod (31) away from the telescopic member (29). A second spring (33) is arranged on the stop block (32), and the telescopic end of the second spring (33) is fixedly connected to a third sliding sleeve (34). The third sliding sleeve (34) is sleeved on the outside of the second sliding rod (31). A pawl (35) is rotatably connected to the third sliding sleeve (34) through a torsion spring.

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