An automated oil wellhead lifting device

Abstract

The present invention relates to the technical field of oil wellheads, and specifically to an automated oil wellhead lifting device, comprising a base, a rotating table fixedly connected to the top of the base, a transmission table fixedly connected to the rear side of the rotating table, an anti-reversal frame fixedly connected to the top left side of the rotating table, a gearbox fixedly connected to the top of the rotating table, a belt fastening frame fixedly connected to the rear side of the gearbox, pulleys fixedly connected to the left and right sides of the gearbox, and cranks movably connected to the front sides of the left and right sides of the gearbox. The present invention is provided with a belt fastening frame, a second motor drives the worm to rotate, the worm drives the second gear, the gear makes the fastening wheel connecting block move toward the belt through the screw rod, and the connecting block drives the fastening wheel to squeeze the belt to achieve fastening and prevent it from falling off, which enhances the working stability of the belt and ensures the stable rotation of the pulley, thereby ensuring the smooth progress of oil pumping and improving efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of oil wellheads, and more specifically, to an automated oil wellhead lifting device. Background Art

[0002] Oil production engineering is the general term for various engineering and technical measures taken on oil reservoirs through production wells and injection wells according to development objectives during the oil field exploitation process. As a comprehensive applied discipline, it studies the theory, engineering design methods and implementation techniques of various engineering and technical measures that can be used economically and effectively on oil reservoirs to increase oil well production and crude oil recovery rate.

[0003] According to the patent document: CN117515120A, a walking beam pumping unit accessory disclosed includes a base, a casing is arranged on the top of the base, a bracket is arranged on the top of the casing, a walking beam is rotatably connected to the top of the bracket, and a donkey head is arranged at the end of the walking beam; a power box is arranged on the top surface of the casing, and a first receiving wheel is arranged on the side of the power box; a transmission belt is sleeved on the surface of the first receiving wheel; a walking beam pumping unit accessory described in the present invention is provided with a receiving plate, and a pressure wheel is arranged on the receiving plate. When in use, the pressure wheel presses against the top surface of the transmission belt, and the transmission belt drives the pressure wheel to rotate when moving, and the transmission belt is continuously subjected to the pressure. When the transmission belt is loose, the pressure of the pressure wheel can make the transmission belt continuously stretched and tightened; therefore, the transmission belt is continuously tightened, and there is no need to stop the machine for adjustment, so the oil pumping unit does not need to interrupt the oil pumping, thereby avoiding affecting the oil pumping efficiency;

[0004] In oil production projects, a beam pumping unit is generally used to lift and pump oil from the wellhead. However, in actual use, the beam pumping unit needs to be shut down regularly to adjust the transmission belt to prevent the transmission belt from loosening and affecting the pumping efficiency. However, during the shutdown adjustment process, the oil wellhead stops pumping oil, causing certain economic losses. At the same time, a beam pumping unit generally drives the beam through a transmission belt through motor braking. However, in actual use, the motor may be reversed due to staff errors, which may cause danger and damage to the equipment. Therefore, it is crucial to ensure the stable operation of the motor and provide a safe and reliable braking mechanism.

[0005] In addition, the swing amplitude of the beam of the beam pump cannot be adjusted according to actual conditions, resulting in a large swing of the beam when a small swing is required, causing energy waste. At the same time, when a large swing of the beam is required, the swing amplitude of the beam is not enough, resulting in reduced oil pumping efficiency. Summary of the invention

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides an automated oil wellhead lifting device. The technical problem to be solved by the present invention is that the walking beam oil pump needs to be shut down regularly to adjust the transmission belt to avoid the loosening of the transmission belt affecting the oil pumping efficiency. However, during the shutdown adjustment process, the oil wellhead stops producing oil, causing certain economic losses. At the same time, a general walking beam oil pump drives the walking beam through a transmission belt through motor braking. However, during actual use, the motor may reverse due to the mistakes of the staff, which may cause danger and damage to the equipment. Therefore, it is very important to ensure the stable operation of the motor and provide a safe and reliable braking mechanism. In addition, the swing amplitude of the walking beam of the walking beam oil pump cannot be adjusted according to the actual situation, resulting in a large swing of the walking beam when a small swing of the walking beam is required, resulting in energy waste. At the same time, when the walking beam needs to swing greatly, the swing amplitude of the walking beam is not enough, resulting in reduced oil pumping efficiency.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] An automated oil wellhead lifting device comprises a base, a rotating table is fixedly connected to the top of the base, a transmission table is fixedly connected to the rear side of the rotating table, an anti-reversal frame is fixedly connected to the left side of the top of the rotating table, a gearbox is fixedly connected to the top of the rotating table, a belt fastening frame is fixedly connected to the rear side of the gearbox, pulleys are fixedly connected to the left and right sides of the gearbox, cranks are movably connected to the front sides of the left and right sides of the gearbox, connecting rods are movably connected to the opposite surfaces of the two cranks, the tops of the two connecting rods are movably connected to a beam connecting plate, the top of the beam connecting plate is movably connected to a beam, a donkey head is fixedly connected to the front side of the beam, and a sucker rod is movably connected to the bottom of the donkey head;

[0009] The transmission platform comprises a transmission platform base, the left and right sides of the top of the transmission platform base are respectively fixedly connected with a rotating rod connecting frame, the right side of the top of the transmission platform base is fixedly connected with a motor placement plate, and the top of the motor placement plate is fixedly connected with a motor.

[0010] As a further solution of the present invention: the output end of the motor is fixedly connected to a rotating rod, and the left and right sides of the outer wall of the rotating rod are movably connected to the inner walls of the two rotating rod connecting frames respectively, and the side of the outer wall of the rotating rod away from the left rotating rod connecting frame is fixedly connected to a gear, and the outer wall of the rotating rod is fixedly connected to a belt shaft on the left and right sides of the opposite surfaces of the two rotating rod connecting frames respectively.

[0011] As a further solution of the present invention: the outer walls of the two belt shafts are both covered with belts, and the inner walls of the two belts on the side away from the belt shafts are respectively covered on the outer walls of the two pulleys.

[0012] As a further solution of the present invention: the belt fastening frame includes a fastening frame plate, and the left and right sides of the rear side of the fastening frame plate are respectively fixedly connected with the screw transmission outer rods, the left and right sides of the bottom of the fastening frame plate are respectively fixedly connected with the second rotating rod connecting blocks, one side of the second rotating rod connecting block on the right side is fixedly connected with the second motor placement plate, and the top of the second motor placement plate is fixedly connected with the second motor.

[0013] As a further solution of the present invention: the output end of the second motor is fixedly connected to the second rotating rod, the left and right sides of the outer wall of the second rotating rod are movably connected to the inner walls of the two second rotating rod connecting blocks respectively, the second rotating rod is fixedly connected to the worm gear on the left and right sides of the outer wall on the opposite sides of the two second rotating rod connecting blocks respectively, and the second worm gear is fixedly connected to the side of the outer wall of the second rotating rod away from the left second rotating rod connecting block.

[0014] As a further solution of the present invention: the outer walls of the two worms are engaged with the second gear, the tops of the two second gears are movably connected to the bottoms of the two screw drive outer rods respectively, the inner walls of the two second gears are threadedly connected with screws, the bottoms of the two screws are movably connected with fastening wheel connecting blocks, and the opposite surfaces of the two fastening wheel connecting blocks are movably connected with belt fastening wheels.

[0015] As a further solution of the present invention: the anti-reversal frame includes a supporting leg, the top of the supporting leg is fixedly connected to a slide plate, the bottom of the supporting leg is fixedly connected to the top left side of the rotating table, the bottom of the inner wall of the slide plate is slidably connected to a gear rod, the rear side of the inner wall of the slide plate is movably connected to a gear rotating rod, the outer wall of the gear rotating rod is fixedly connected to a fourth gear, the outer wall of the fourth gear engages with a fifth gear, the outer wall of the fifth gear engages with the gear rod, and the left and right sides of the fifth gear are movably connected to the left and right sides of the inner wall of the slide plate.

[0016] As a further solution of the present invention: the right end of the gear rotating rod extends to the outer wall of the slide slot plate and is fixedly connected to the third gear, the outer wall of the third gear is meshed with the outer wall of the second worm gear, the rear side of the gear rod is fixedly connected to a semicircular connecting plate, and the rear side annular array of the semicircular connecting plate is fixedly connected to a plurality of anti-reversal blocks.

[0017] As a further solution of the present invention: the crank includes a crank body, a plurality of slots are provided on the top of the crank body, a slide groove is provided on one side of the crank body and extends to the other side, a plurality of rollers are rotatably connected to the top and bottom of the inner wall of the slide groove respectively, and the opposite surfaces of the two groups of rollers are slidably connected with an articulated shaft, a transmission block is fixedly connected to one side of the articulated shaft, an L-shaped card rod frame is fixedly connected to the top of the transmission block, a threaded card rod is threadedly connected to the top inner wall of the L-shaped card rod frame, and the bottom of the outer wall of the threaded card rod is threadedly connected to the inner wall of one of the slots.

[0018] As a further solution of the present invention: a third motor placement block is fixedly connected to the front side of the crank body close to the transmission block, and an L-shaped slider frame is fixedly connected to the rear side of the third motor placement block, a bottom slide groove is opened at the top below the L-shaped slider frame, the inner wall of the third motor placement block is fixedly connected to the third motor, the output end of the third motor extends to the outer wall of the third motor placement block and is fixedly connected to a second screw rod, the rear end of the second screw rod is movably connected to the inner wall of the rear side of the L-shaped slider frame, the outer wall of the second screw rod is threadedly connected to the inner wall of the transmission block, the transmission block is fixedly connected to a slider on the side away from the hinge shaft, the outer wall of the slider is slidably connected to the inner wall of the bottom slide groove, and the inner wall of the hinge shaft on the side away from the transmission block is movably connected to one side of the connecting rod.

[0019] The beneficial effects of the present invention are:

[0020] 1. The present invention is provided with a transmission platform and a motor. The output end of the motor drives the gear to rotate through a rotating rod. The gear drives the pulley to rotate through a belt. The pulley drives the crank to rotate. The crank drives the walking beam connecting plate to swing left and right through a connecting rod. The walking beam connecting plate drives the walking beam to swing left and right. The walking beam drives the donkey head to move up and down. The donkey head drives the pumping rod to move up and down, thereby realizing the pumping work of the oil well, thereby enabling the motor to run stably, and at the same time avoiding the reversal phenomenon, improving the use efficiency of the motor, and extending the service life of the motor;

[0021] 2. The present invention is provided with a belt fastening frame, the output end of the second motor drives the worm to rotate through the second rotating rod, the worm drives the second gear to rotate, the second gear drives the fastening wheel connecting block to move toward the belt through the screw, the fastening wheel connecting block drives the belt fastening wheel to move in the direction of the belt, so that the belt fastening wheel squeezes the belt, thereby fastening the belt, preventing the belt from loosening and causing the belt to fall off, improving the working stability of the belt, and then enabling the pulley to rotate stably, ensuring the smooth progress of the oil pumping work, and improving the efficiency of the oil pumping work;

[0022] 3. The present invention is provided with an anti-reversal frame, the third gear drives the fourth gear to rotate, the fourth gear drives the gear rod to move backward inside the slide plate through the fifth gear, the gear rod drives the semicircular arc connecting plate to move backward, the semicircular arc connecting plate drives the anti-reversal block to move backward and mesh with the gear, so that the gear is blocked by the anti-reversal block to prevent the gear from reversing, thereby improving the working stability of the gear, and then the rotating rod can rotate stably, improving the efficiency of the oil pumping work, and ensuring the smooth progress of the oil pumping work;

[0023] 4. The present invention is provided with a crank. When it is necessary to adjust the swing amplitude of the rocker arm, the threaded clamping rod is rotated to disengage the threaded clamping rod from the slot. Then the transmission block is moved by the third motor. The transmission block drives the articulated shaft to slide inside the slide slot, thereby adjusting the distance between the articulated shaft and the crank body, and then adjusting the swing amplitude of the rocker arm, so that the rocker arm can swing according to actual conditions, reducing energy consumption and improving the efficiency of oil pumping. When the adjustment is completed, the threaded clamping rod is rotated in the opposite direction to allow the threaded clamping rod to enter the corresponding slot, thereby fixing the transmission block to prevent the transmission block from moving, resulting in a change in the distance between the articulated shaft and the crank body, thereby improving the stability of the crank. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the main three-dimensional structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of the main part of the present invention;

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure of the transmission platform of the present invention;

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure of the belt fastening frame of the present invention;

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the anti-reversal frame of the present invention;

[0029] Figure 6 It is a schematic diagram of the three-dimensional structure of the connecting rod and the crank of the present invention;

[0030] Figure 7 It is a schematic diagram of the connecting rod and crank separation structure of the present invention.

[0031] In the figure: 1, base; 2, rotating table; 3, transmission table; 31, transmission table base; 32, motor placement plate; 33, rotating rod connecting frame; 34, motor; 35, rotating rod; 36, belt shaft; 37, belt; 38, gear; 4, gearbox; 5, belt fastening frame; 51, fastening frame plate; 52, second rotating rod connecting block; 53, second motor placement plate; 54, second motor; 55, second rotating rod; 56, screw transmission outer rod; 57, worm; 58, second worm; 59, second gear; 510, screw; 511, fastening wheel connecting block; 512, belt fastening wheel; 6, pulley; 7, connecting rod; 8, crank; 8 1. Crank body; 82. Slot; 83. Slide; 84. Third motor placement block; 85. L-shaped slider frame; 86. Bottom slide; 87. Third motor; 88. Second screw rod; 89. Slider; 810. Transmission block; 811. L-shaped clamping rod frame; 812. Threaded clamping rod; 813. Roller; 814. Articulated shaft; 9. Anti-reverse frame; 91. Support leg; 92. Slide plate; 93. Gear rod; 94. Gear rotating rod; 95. Third gear; 96. Fourth gear; 97. Fifth gear; 98. Semicircular arc connecting plate; 99. Anti-reverse block; 10. Walking beam connecting plate; 11. Walking beam; 12. Donkey head; 13. Sucker rod. DETAILED DESCRIPTION

[0032] 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.

[0033] like Figure 1-7 As shown, the present invention provides an automated oil wellhead lifting device, including a base 1, a rotating table 2 is fixedly connected to the top of the base 1, a transmission table 3 is fixedly connected to the rear side of the rotating table 2, an anti-reversal frame 9 is fixedly connected to the left side of the top of the rotating table 2, a gearbox 4 is fixedly connected to the top of the rotating table 2, a belt tightening frame 5 is fixedly connected to the rear side of the gearbox 4, pulleys 6 are fixedly connected to the left and right sides of the gearbox 4, cranks 8 are movably connected to the front sides of the left and right sides of the gearbox 4, connecting rods 7 are movably connected to the opposite surfaces of the two cranks 8, the tops of the two connecting rods 7 are movably connected to a rocker connecting plate 10, the top of the rocker connecting plate 10 is movably connected to a rocker 11, the front side of the rocker 11 is fixedly connected to a donkey head 12, and the bottom of the donkey head 12 is movably connected to a sucker rod 13.

[0034] like Figure 2-6As shown, the transmission platform 3 includes a transmission platform base 31, and the left and right sides of the top of the transmission platform base 31 are respectively fixedly connected with a rotating rod connecting frame 33, a motor placement plate 32 is fixedly connected to the top of the transmission platform base 31, a motor 34 is fixedly connected to the top of the motor placement plate 32, and a rotating rod 35 is fixedly connected to the output end of the motor 34. The left and right sides of the outer wall of the rotating rod 35 are respectively movably connected to the inner walls of the two rotating rod connecting frames 33, and the outer wall of the rotating rod 35 is fixedly connected to a gear 38 on the side away from the left rotating rod connecting frame 33. The outer wall of the rotating rod 35 is fixedly connected to a belt shaft 36 on the left and right sides of the opposite sides of the two rotating rod connecting frames 33, and the outer walls of the two belt rotating shafts 36 are both covered with belts 37. The two belts 37 The inner wall of the side away from the belt shaft 36 is respectively sleeved on the outer walls of the two pulleys 6, and the belt fastening frame 5 includes a fastening frame plate 51, and the left and right sides of the rear side of the fastening frame plate 51 are respectively fixedly connected with the screw transmission outer rod 56, and the left and right sides of the bottom of the fastening frame plate 51 are respectively fixedly connected with the second rotating rod connecting block 52, and the second motor placement plate 53 is fixedly connected to one side of the second rotating rod connecting block 52 on the right side, and the second motor 54 is fixedly connected to the top of the second motor placement plate 53, and the output end of the second motor 54 is fixedly connected to the second rotating rod 55, and the left and right sides of the outer wall of the second rotating rod 55 are respectively movably connected to the inner walls of the two second rotating rod connecting blocks 52, and the second rotating rod 55 is on the left side of the outer wall opposite to the two second rotating rod connecting blocks 52 The right and left sides are respectively fixedly connected with worm gears 57, the outer wall of the second rotating rod 55 is fixedly connected with a second worm gear 58 on the side away from the second rotating rod connecting block 52 on the left side, the outer walls of the two worm gears 57 are meshed with second gears 59, the tops of the two second gears 59 are respectively movably connected to the bottoms of the two screw transmission outer rods 56, the inner walls of the two second gears 59 are threadedly connected with screws 510, the bottoms of the two screws 510 are movably connected with fastening wheel connecting blocks 511, and the opposite surfaces of the two fastening wheel connecting blocks 511 are movably connected with belt fastening wheels 512. The anti-reversal frame 9 includes a support leg 91, the top of the support leg 91 is fixedly connected with a slide plate 92, and the bottom of the support leg 91 is fixedly connected to the top left of the rotating table 2. On the side, a gear rod 93 is slidably connected to the bottom of the inner wall of the slide plate 92, and a gear rotating rod 94 is movably connected to the rear side of the inner wall of the slide plate 92. A fourth gear 96 is fixedly connected to the outer wall of the gear rotating rod 94. The outer wall of the fourth gear 96 meshes with the fifth gear 97. The outer wall of the fifth gear 97 meshes with the gear rod 93. The left and right sides of the fifth gear 97 are movably connected to the left and right sides of the inner wall of the slide plate 92. The right end of the gear rotating rod 94 extends to the outer wall of the slide plate 92 and is fixedly connected to the third gear 95. The outer wall of the third gear 95 meshes with the outer wall of the second worm 58. A semicircular arc connecting plate 98 is fixedly connected to the rear side of the gear rod 93. A plurality of anti-reversal blocks 99 are fixedly connected to the rear annular array of the semicircular arc connecting plate 98.

[0035] When the oil wellhead needs to be lifted, the second motor 54 is first started. After the second motor 54 is started, it drives the second rotating rod 55 to rotate, and then drives the worm 57 and the second worm 58 to rotate. When the worm 57 rotates, it drives the second gear 59 meshing therewith to rotate. When the second gear 59 rotates, it drives the screw 510 to move in a thread inside the screw transmission outer rod 56. When the screw 510 moves downward, it drives the belt tightening wheel 512 to move in the direction of the belt 37 and press the belt 37 downward. When the belt tightening wheel 512 contacts the belt 37, the belt tightening wheel 512 can squeeze the belt 37, thereby tightening the belt 37 to prevent the belt 37 from loosening.

[0036] At the same time, when the second worm 58 rotates, it drives the third gear 95 meshing therewith to rotate. When the third gear 95 rotates, it drives the gear rotating rod 94 to rotate, and then drives the fourth gear 96 to rotate. When the fourth gear 96 rotates, it drives the fifth gear 97 meshing therewith to rotate. When the fifth gear 97 rotates, it drives the gear rod 93 to slide inside the slide groove plate 92. When the gear rod 93 moves, it drives the semicircular arc connecting plate 98 to move, and then drives the anti-reversal block 99 to move. When the anti-reversal block 99 moves to the outer wall of the gear 38 and meshes with the gear 38, it can effectively prevent the gear 38 from reversing during the rotation process, thereby preventing the motor 34 from reversing when starting to drive the rotating rod 35 to rotate;

[0037] When the motor 34 is started, the rotating rod 35 starts to rotate. When the rotating rod 35 rotates, the belt 37 is driven to rotate through the belt shaft 36. When the belt 37 rotates, it drives the pulley 6 to rotate, and then drives the gears inside the gearbox 4 to rotate. When the gears inside the gearbox 4 rotate, it drives the crank 8 to rotate. When the crank 8 rotates, it drives the connecting rod 7 to move. When the connecting rod 7 moves, it drives the rocker connecting plate 10 to move. When the rocker connecting plate 10 moves, it drives the rocker 11 to move. When the rocker 11 moves, it drives the donkey head 12 to move. When the donkey head 12 moves, it drives the sucker rod 13 to move up and down, thereby lifting the oil wellhead.

[0038] like Figure 7As shown, the crank 8 includes a crank body 81, a plurality of slots 82 are provided on the top of the crank body 81, a slide groove 83 is provided on one side of the crank body 81 and extends to the other side, a plurality of rollers 813 are rotatably connected to the top and bottom of the inner wall of the slide groove 83 respectively, an articulated shaft 814 is slidably connected to the opposite surfaces of the two groups of rollers 813, a transmission block 810 is fixedly connected to one side of the articulated shaft 814, an L-shaped card rod frame 811 is fixedly connected to the top of the transmission block 810, a threaded card rod 812 is threadedly connected to the inner wall of one of the slots 82 on the top inner wall of the L-shaped card rod frame 811, and the outer wall bottom of the threaded card rod 812 is threadedly connected to the inner wall of one of the slots 82, and a third motor placement block is fixedly connected to the front side of the crank body 81 close to the transmission block 810 84, the rear side of the third motor placement block 84 is fixedly connected with an L-shaped slider frame 85, and a bottom slide groove 86 is opened at the top below the L-shaped slider frame 85. The inner wall of the third motor placement block 84 is fixedly connected with a third motor 87, and the output end of the third motor 87 extends to the outer wall of the third motor placement block 84 and is fixedly connected with a second screw rod 88. The rear end of the second screw rod 88 is movably connected to the inner wall of the rear side of the L-shaped slider frame 85, and the outer wall of the second screw rod 88 is threadedly connected to the inner wall of the transmission block 810. The side of the transmission block 810 away from the hinge shaft 814 is fixedly connected with a slider 89, and the outer wall of the slider 89 is slidably connected to the inner wall of the bottom slide groove 86, and the inner wall of the side of the hinge shaft 814 away from the transmission block 810 is movably connected to one side of the connecting rod 7;

[0039] When it is necessary to adjust the swing amplitude of the walking beam 11, first start the third motor 87. After the third motor 87 is started, it drives the second screw rod 88 to rotate. Since the slider 89 is slidably connected in the bottom slide groove 86, when the second screw rod 88 rotates, it drives the transmission block 810 to move along the direction of the slide groove 83 on the crank body 81, thereby driving the hinge shaft 814 to move. When the hinge shaft 814 moves, it drives one end of the connecting rod 7 to move, thereby changing the angle between the connecting rod 7 and the crank body 81, thereby changing the swing amplitude of the walking beam 11. When it is adjusted to a suitable amplitude, the threaded clamping rod 812 is rotated so that one end of the threaded clamping rod 812 is threadedly connected in the clamping groove 82, and the transmission block 810 is fixed to prevent it from moving, thereby maintaining the swing amplitude of the walking beam 11.

[0040] In addition, by providing the roller 813 , when the transmission block 810 moves on the crank body 81 , the roller 813 can reduce the friction between the transmission block 810 and the crank body 81 , so that the transmission block 810 can move more smoothly.

[0041] Working principle of the present invention: when it is necessary to lift the oil wellhead, first start the second motor 54, after the second motor 54 is started, it drives the second rotating rod 55 to rotate, and then drives the worm 57 and the second worm 58 to rotate. When the worm 57 rotates, it drives the second gear 59 meshing with it to rotate. When the second gear 59 rotates, it drives the screw 510 to move in the screw transmission outer rod 56. When the screw 510 moves downward, it drives the belt fastening wheel 512 to move in the direction of the belt 37 and press the belt downward. When the belt tightening wheel 512 contacts the belt 37, the belt tightening wheel 512 can squeeze the belt 37, thereby tightening the belt 37 to prevent the belt 37 from loosening. At the same time, when the second worm 58 rotates, the third gear 95 meshing therewith is driven to rotate. When the third gear 95 rotates, the gear rotating rod 94 is driven to rotate, and then the fourth gear 96 is driven to rotate. When the fourth gear 96 rotates, the fifth gear 97 meshing therewith is driven to rotate. When the fifth gear 97 rotates, the gear rod 93 is driven to rotate. The slide plate 92 slides inside, and when the gear rod 93 moves, the semicircular arc connecting plate 98 is driven to move, and then the anti-reversal block 99 is driven to move. When the anti-reversal block 99 moves to the outer wall of the gear 38 and meshes with the gear 38, it can effectively prevent the gear 38 from reversing during the rotation process, thereby preventing the motor 34 from reversing when the rotating rod 35 is driven to rotate when the motor 34 is started. When the motor 34 is started, the rotating rod 35 starts to rotate. When the rotating rod 35 rotates, the belt 37 is driven to rotate through the belt shaft 36. The belt When 37 rotates, it drives the pulley 6 to rotate, and then drives the gears inside the gearbox 4 to rotate. When the gears inside the gearbox 4 rotate, it drives the crank 8 to rotate. When the crank 8 rotates, it drives the connecting rod 7 to move. When the connecting rod 7 moves, it drives the beam connecting plate 10 to move. When the beam connecting plate 10 moves, it drives the beam 11 to move. When the beam 11 moves, it drives the donkey head 12 to move. When the donkey head 12 moves, it drives the pumping rod 13 to move up and down, thereby lifting the oil wellhead;

[0042] When the swing amplitude of the walking beam 11 needs to be adjusted, the third motor 87 is first started. After the third motor 87 is started, the second screw rod 88 is driven to rotate. Since the slider 89 is slidably connected in the bottom slide groove 86, when the second screw rod 88 rotates, the transmission block 810 is driven to move along the direction of the slide groove 83 on the crank body 81, thereby driving the hinge shaft 814 to move. When the hinge shaft 814 moves, one end of the connecting rod 7 is driven to move, thereby changing the angle between the connecting rod 7 and the crank body 81, so that Change the swing amplitude of the rocker 11. When it is adjusted to a suitable amplitude, rotate the threaded clamping rod 812 so that one end of the threaded clamping rod 812 is threadedly connected in the clamping groove 82 to fix the transmission block 810 to prevent it from moving, thereby maintaining the swing amplitude of the rocker 11. In addition, by setting the roller 813, when the transmission block 810 moves on the crank body 81, the roller 813 can reduce the friction between the transmission block 810 and the crank body 81, so that the transmission block 810 can move more smoothly.

[0043] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0044] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automated oil wellhead lifting device, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a rotating table (2), the rear side of the rotating table (2) is fixedly connected to a transmission table (3), the left side of the top of the rotating table (2) is fixedly connected to an anti-reversal frame (9), the top of the rotating table (2) is fixedly connected to a gearbox (4), the rear side of the gearbox (4) is fixedly connected to a belt fastening frame (5), the left and right sides of the gearbox (4) are respectively fixedly connected to pulleys (6), the front sides of the left and right sides of the gearbox (4) are respectively movably connected to cranks (8), the opposite surfaces of the two cranks (8) are movably connected to connecting rods (7), the tops of the two connecting rods (7) are movably connected to a walking beam connecting plate (10), the top of the walking beam connecting plate (10) is movably connected to a walking beam (11), the front side of the walking beam (11) is fixedly connected to a donkey head (12), and the bottom of the donkey head (12) is movably connected to a sucker rod (13); The transmission platform (3) comprises a transmission platform base (31), the top left and right sides of the transmission platform base (31) are respectively fixedly connected to a rotating rod connecting frame (33), the top right side of the transmission platform base (31) is fixedly connected to a motor placement plate (32), and the top of the motor placement plate (32) is fixedly connected to a motor (34); The belt fastening frame (5) comprises a fastening frame plate (51), the left and right sides of the rear side of the fastening frame plate (51) are respectively fixedly connected with screw transmission outer rods (56), the left and right sides of the bottom of the fastening frame plate (51) are respectively fixedly connected with second rotating rod connecting blocks (52), one side of the second rotating rod connecting block (52) on the right side is fixedly connected with a second motor placement plate (53), and the top of the second motor placement plate (53) is fixedly connected with a second motor (54); The anti-reversal frame (9) comprises a support leg (91), the top of the support leg (91) is fixedly connected to a slide plate (92), the bottom of the support leg (91) is fixedly connected to the top left side of the rotating table (2), the bottom of the inner wall of the slide plate (92) is slidably connected to a gear rod (93), the rear side of the inner wall of the slide plate (92) is movably connected to a gear rotating rod (94), the outer wall of the gear rotating rod (94) is fixedly connected to a fourth gear (96), the outer wall of the fourth gear (96) is meshed with a fifth gear (97), the outer wall of the fifth gear (97) is meshed with the gear rod (93), and the left and right sides of the fifth gear (97) are movably connected to the left and right sides of the inner wall of the slide plate (92).

2. The automatic oil wellhead lifting device according to claim 1 is characterized in that: The output end of the motor (34) is fixedly connected to a rotating rod (35), and the left and right sides of the outer wall of the rotating rod (35) are movably connected to the inner walls of the two rotating rod connecting frames (33), and the outer wall of the rotating rod (35) is fixedly connected to a gear (38) on the side away from the left rotating rod connecting frame (33), and the outer wall of the rotating rod (35) is fixedly connected to a belt rotating shaft (36) on the left and right sides of the opposite sides of the two rotating rod connecting frames (33).

3. The automatic oil wellhead lifting device according to claim 2 is characterized in that: The outer walls of the two belt rotating shafts (36) are both sleeved with belts (37), and the inner walls of the two belts (37) on a side away from the belt rotating shafts (36) are sleeved on the outer walls of the two belt pulleys (6) respectively.

4. The automatic oil wellhead lifting device according to claim 1 is characterized in that: The output end of the second motor (54) is fixedly connected to a second rotating rod (55); the left and right sides of an outer wall of the second rotating rod (55) are movably connected to the inner walls of the two second rotating rod connecting blocks (52); the left and right sides of the outer walls of the second rotating rod (55) opposite to the two second rotating rod connecting blocks (52) are fixedly connected to worm gears (57); and the side of the outer wall of the second rotating rod (55) away from the left second rotating rod connecting block (52) is fixedly connected to a second worm gear (58).

5. The automatic oil wellhead lifting device according to claim 4 is characterized in that: The outer walls of the two worms (57) are meshed with a second gear (59); the tops of the two second gears (59) are movably connected to the bottoms of two screw drive outer rods (56), respectively; the inner walls of the two second gears (59) are threadedly connected to a screw (510); the bottoms of the two screws (510) are movably connected to a fastening wheel connection block (511); and the opposite surfaces of the two fastening wheel connection blocks (511) are movably connected to a belt fastening wheel (512).

6. The automatic oil wellhead lifting device according to claim 1, characterized in that: The right end of the gear rotating rod (94) extends to the outer wall of the slide slot plate (92) and is fixedly connected to a third gear (95); the outer wall of the third gear (95) meshes with the outer wall of the second worm (58); the rear side of the gear rod (93) is fixedly connected to a semicircular arc connecting plate (98); and a plurality of anti-reversal blocks (99) are fixedly connected in an annular array on the rear side of the semicircular arc connecting plate (98).

7. The automatic oil wellhead lifting device according to claim 1 is characterized in that: The crank (8) comprises a crank body (81), a plurality of slots (82) are provided at the top of the crank body (81), a slide groove (83) is provided on one side of the crank body (81) and extends to the other side, a plurality of rollers (813) are rotatably connected to the top and bottom of the inner wall of the slide groove (83), two groups of opposite surfaces of the rollers (813) are slidably connected to hinge shafts (814), a transmission block (810) is fixedly connected to one side of the hinge shaft (814), an L-shaped clamping rod frame (811) is fixedly connected to the top of the transmission block (810), a threaded clamping rod (812) is threadedly connected to the inner wall of the top of the L-shaped clamping rod frame (811), and the bottom of the outer wall of the threaded clamping rod (812) is threadedly connected to the inner wall of one of the slots (82).

8. The automatic oil wellhead lifting device according to claim 7, characterized in that: A third motor placement block (84) is fixedly connected to the front side of the crank body (81) near the transmission block (810), an L-shaped slider frame (85) is fixedly connected to the rear side of the third motor placement block (84), a bottom slide groove (86) is provided at the top below the L-shaped slider frame (85), a third motor (87) is fixedly connected to the inner wall of the third motor placement block (84), and an output end of the third motor (87) extends to the outer wall of the third motor placement block (84) and is fixedly connected to a second wire. The rear end of the second screw rod (88) is movably connected to the rear inner wall of the L-shaped slider frame (85), the outer wall of the second screw rod (88) is threadedly connected to the inner wall of the transmission block (810), the side of the transmission block (810) away from the hinge shaft (814) is fixedly connected to the slider (89), the outer wall of the slider (89) is slidably connected to the inner wall of the bottom slide groove (86), and the inner wall of the side of the hinge shaft (814) away from the transmission block (810) is movably connected to one side of the connecting rod (7).

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