A tower pumping unit

Abstract

The present invention relates to the technical field of oil pumping units, and discloses a tower oil pumping unit comprising a truss, a base, a top platform, a counterweight box, a hanger, a drive mechanism, a control box, and a steel wire rope. The truss is provided with a maintenance mechanism, the truss is fixedly mounted on the upper end face of the base, the top platform is fixedly mounted on the upper end face of the truss, the counterweight box is movably mounted in the truss, the hanger is movably mounted at the front end of the truss, the drive mechanism drives the counterweight box and the hanger via a steel wire rope, the maintenance mechanism comprises a maintenance plate, a connecting rod, a first bearing seat, a hydraulic telescopic rod, a second bearing seat, and a second motor, the truss is provided with a crossbeam, the first bearing seat and the second bearing seat are fixedly mounted on the crossbeam. The present invention solves the problem in the prior art that during operation of a tower-type oil pumping unit, the maintenance efficiency of the steel wire rope is low, which easily leads to poor lubrication and wear of the steel wire rope.

Description

Technical Field

[0001] The present invention relates to the technical field of oil pumping units, in particular to a tower oil pumping unit. Background Art

[0002] In the field of oil production, pumping units, as important surface equipment, are widely used in rod pumping systems. Their primary function is to transmit power to the sucker rod, driving the reciprocating motion of the downhole pump, thereby achieving continuous crude oil extraction. Traditional pumping units mainly include beam pumping units and tower pumping units. Tower pumping units, due to their compact structure, small footprint, and strong adaptability, are increasingly used in oilfields.

[0003] Existing tower-type oil pumping units use steel wire ropes as key components connecting the drive mechanism and the suspension connector. When the steel wire rope is working, it is in a high-frequency, high-load reciprocating motion state for a long time, and is prone to abnormal wear due to poor surface lubrication, seriously affecting the service life and operational reliability of the equipment. Summary of the Invention

[0004] The purpose of the present invention is to provide a tower pumping unit with the advantage of easy maintenance, which solves the problem of low maintenance efficiency of the wire rope during operation of the tower pumping unit in the prior art, which easily leads to poor lubrication and wear of the wire rope.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a tower pumping unit, comprising a truss, a base, a top platform, a counterweight box, a hanger, a drive mechanism, a control box and a wire rope, wherein a maintenance mechanism is provided on the truss;

[0006] The truss is fixedly mounted on the upper end surface of the base, the top platform is fixedly mounted on the upper end surface of the truss, the counterweight box is movably mounted in the truss, the hanger is movably mounted at the front end of the truss, the driving mechanism drives the counterweight box and the hanger through a steel wire rope, the maintenance mechanism includes a maintenance plate, a connecting rod, a first bearing seat, a hydraulic telescopic rod, a second bearing seat and a second motor, a cross beam is provided on the truss, the first bearing seat and the second bearing seat are fixedly mounted on the cross beam, the connecting rod is mounted on the second bearing seat and is rotatably connected to it, the top of the hydraulic telescopic rod is rotatably connected to the first bearing seat, the bottom of the hydraulic telescopic rod is rotatably connected to the side end surface of the connecting rod, the maintenance plate is mounted on the bottom of the connecting rod and is rotatably connected to it, there are two maintenance plates, and a rod body is mounted on the opposite end of the two maintenance plates, and the second motor is fixedly mounted on the connecting rod to drive the maintenance plate.

[0007] As a preferred tower pumping unit of the present invention, the counterweight box includes a box body, a load-bearing bar and a third motor, the upper end surface of the box body is provided with a first pulley group, the upper end surface of the hanger is provided with a first pulley group, the driving mechanism includes a first motor and a traction wheel, the traction wheel is driven by the first motor, and the wire rope passes through the lower end of the first pulley group, the upper end of the traction wheel and the lower end of the second pulley group in sequence and is fixed to the top platform.

[0008] As a preferred tower pumping unit of the present invention, the inner end surface of the truss is provided with a guide rail, the side end surface of the box is provided with a guide wheel that cooperates with the guide rail, and the guide wheel is rotatably connected to the box.

[0009] As a preferred tower pumping unit of the present invention, the side end face of the box body is provided with a first slide groove, the load-bearing bar is installed in the first slide groove and is slidably connected to the box body, the screw rod is installed in the first slide groove and is rotatably connected to the box body, the third motor is fixedly installed in the first slide groove and drives the screw rod through the bevel gear, and the side end face of the load-bearing bar is provided with a screw hole that cooperates with the screw rod.

[0010] As a preferred tower pumping unit of the present invention, the maintenance disk is provided with a first wire pulley, a second wire pulley and a wire pulley that cooperate with the wire rope, the centers of the first wire pulley, the second wire pulley and the third wire pulley are located on the three vertices of the same equilateral triangle, a brush disk is provided between the first wire pulley and the second wire pulley, the side end face of the brush disk is provided with bristles, a wiping plate is provided between the second wire pulley and the third wire pulley, and a solid lubricant is provided between the third wire pulley and the first wire pulley.

[0011] As a preferred tower pumping unit of the present invention, a first gear is provided on the first wire pulley, a second gear meshing with the first gear is provided on the maintenance disk, a third gear meshing with the second gear is provided on the brush disk, and the brush disk is installed on the maintenance disk and is rotatably connected to it.

[0012] As a preferred tower pumping unit of the present invention, the wiping plate is fixedly mounted on the inner end surface of the maintenance plate, the wiping plate is provided with a sponge, and the side end surface of the sponge is provided with an arc groove corresponding to the position of the wire rope.

[0013] As a preferred tower pumping unit of the present invention, the inner end surface of the maintenance plate is provided with a sliding sleeve, the upper end surface of the sliding sleeve is provided with a third sliding groove, the sliding sleeve is provided with a first spring, a first slider and a second slider, the first slider and the second slider are installed in the third sliding groove and are elastically slidably connected to the third slider through the first spring, and the solid lubricant is fixedly installed on the first slider and the second slider.

[0014] As a preferred tower pumping unit of the present invention, the bottom edges of the first slider and the second slider are provided with a first flange, the top of the inner end surface of the sliding sleeve is provided with a second flange that cooperates with the first flange, the bottom edge of the first flange is chamfered, the side end surface of the first slider is provided with a second slide groove, the side end surface of the second slider is provided with a slide rod that cooperates with the second slide groove, and a second spring is provided in the second slide groove.

[0015] As a preferred tower pumping unit of the present invention, the upper end surface of the top platform is provided with a guardrail, the lower end surface of the top platform is provided with an inspection ladder, and the upper end of the traction wheel is provided with a dust cover.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention significantly improves the maintenance efficiency of the wire rope and the overall life of the equipment by integrating a maintenance mechanism on the truss. The core of the mechanism lies in its hydraulic telescopic rod, connecting rod and maintenance disk driven by a second motor. The hydraulic telescopic rod and connecting rod work together to accurately adjust the position of the maintenance disk to adapt to the wire rope. The maintenance disk has a unique design. The three vertices are equipped with guide wheels, so that the wire rope can pass through stably and maintain contact. When the maintenance disk rotates, its three functional areas act in sequence. First, the steel wire bristles on the sweeping disk powerfully remove dust and stubborn dirt accumulated on the surface of the wire rope; then, it rotates to the wiping plate area with an arc-shaped sponge groove to thoroughly wipe the wire rope. Remove the remaining debris by brushing to ensure a smooth surface; finally, enter the solid lubricant application area, where the elastically mounted solid lubricant block always clings to the wire rope under the action of the spring, evenly applying the lubricating layer. This automated cleaning-wiping-lubrication cycle can be completed during the equipment's operating intervals without the need for frequent manual intervention. It effectively solves the core problems of traditional oil pumping unit wire ropes, such as abnormal wear, high risk of wire breakage, and frequent replacement caused by dirt accumulation and insufficient lubrication, and significantly reduces maintenance costs. Manual operations are difficult and require shutdown for maintenance, which directly extends the service life of key components, the wire rope, and the entire machine, ensuring the continuity and reliability of oil pumping operations.

[0018] 2. The present invention greatly enhances operational stability and maintenance safety by optimizing the counterweight box structure and adding a safety locking device, solving the risks of load fluctuations and accidental falls. The counterweight box precisely cooperates with the guide rails inside the truss through the side guide wheels to ensure the smooth vertical movement of the counterweight box along the set trajectory under huge loads, effectively eliminating the risks of shaking, offsetting or colliding with the truss structure, avoiding the resulting equipment jamming, damage and unsmooth movement of the pumping rod. More importantly, the counterweight box integrates a safety locking mechanism consisting of a third motor, bevel gear, screw and load-bearing bar. When the equipment needs maintenance, the controller instructs the third motor to drive the screw to rotate, driving the load-bearing bar to steadily extend horizontally from the slide groove on the side of the box until it is firmly connected to the crossbeam of the truss. This mechanical interlocking structure provides rigid physical support for the counterweight box during maintenance, completely eliminating the major safety hazard of the counterweight box falling rapidly due to failure of the drive mechanism or other unexpected situations, creating an inherently safe working environment for maintenance personnel and ensuring the safe progress of maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 A top view of the present invention;

[0021] Figure 3 For the present invention Figure 2 Middle AA section;

[0022] Figure 4 For the present invention Figure 3 Enlarged view of point B in the middle;

[0023] Figure 5 This is a schematic diagram of the maintenance tray structure of the present invention;

[0024] Figure 6 This is a front cross-sectional view of the maintenance tray of the present invention;

[0025] Figure 7 This is a schematic diagram of the maintenance mechanism structure of the present invention;

[0026] Figure 8 For the present invention Figure 1 Enlarged view of point D in the middle;

[0027] Figure 9 For the present invention Figure 3 Enlarged view of point C in the middle;

[0028] Figure 10 For the present invention Figure 1 Enlarged view of point E in the middle;

[0029] Figure 11 For the present invention Figure 6 Enlarged view of point F in the middle.

[0030] In the figure: 1. Truss; 101. Crossbeam; 102. Guide rail; 2. Base; 3. Top platform; 301. Guardrail; 302. Maintenance ladder; 4. Counterweight box; 401. Box body; 402. Load-bearing bar; 403. Screw rod; 404. Third motor; 405. First slideway; 406. Screw hole; 407. Guide wheel; 408. First pulley block; 5. Connector; 501. Second pulley block; 6. Drive mechanism; 601. Traction sheave; 602. First motor; 603. Dust cover; 7. Maintenance mechanism; 701. Maintenance tray; 702. Connecting rod; 703. First bearing seat; 704. Hydraulic telescopic rod; 705. Second bearing seat; 706 , first wire pulley; 707, second wire pulley; 708, third wire pulley; 709, first gear; 710, second gear; 712, third gear; 713, brush plate; 714, bristles; 715, wiping plate; 716, sponge; 717, arc groove; 718, solid lubricant; 719, first slider; 7191, second slide groove; 7192, first spring; 7193, first flange; 720, second slider; 7201, slide rod; 721, sleeve; 7211, second flange; 7212, third slide groove; 7213, second spring; 722, second motor; 723, rod body; 8, control box; 9, wire rope. DETAILED DESCRIPTION

[0031] Example 1

[0032] See also Figures 1-11 A tower pumping unit includes a truss 1, a base 2, a top platform 3, a counterweight box 4, a hanger 5, a drive mechanism 6, a control box 8 and a wire rope 9. A maintenance mechanism 7 is provided on the truss 1;

[0033] The truss 1 is fixedly mounted on the upper end surface of the base 2, the top platform 3 is fixedly mounted on the upper end surface of the truss 1, the counterweight box 4 is movably mounted in the truss 1, the hanger 5 is movably mounted on the front end of the truss 1, the driving mechanism 6 drives the counterweight box 4 and the hanger 5 through the wire rope 9, the maintenance mechanism 7 includes a maintenance plate 701, a connecting rod 702, a first bearing seat 703, a hydraulic telescopic rod 704, a second bearing seat 705 and a second motor 722, and a crossbeam 101, a first bearing seat 703 and a second bearing seat 705 are provided on the truss 1. It is fixedly mounted on the crossbeam 101, the connecting rod 702 is mounted on the second bearing seat 705 and is rotatably connected to it, the top of the hydraulic telescopic rod 704 is rotatably connected to the first bearing seat 703, the bottom of the hydraulic telescopic rod 704 is rotatably connected to the side end face of the connecting rod 702, the maintenance disk 701 is mounted on the bottom of the connecting rod 702 and is rotatably connected to it, there are two maintenance disks 701, and a rod body 723 is mounted on the opposite end of the two maintenance disks 701, and the second motor 722 is fixedly mounted on the connecting rod 702 to drive the maintenance disk 701.

[0034] The driving mechanism 6 drives the wire rope 9 to move, thereby realizing the up and down reciprocating motion of the suspension connector 5 to perform oil pumping operations. A maintenance mechanism 7 is set on the truss 1 to perform regular maintenance on the wire rope 9. The position of the maintenance plate 701 is controlled by the hydraulic telescopic rod 704 to control the start and stop of the maintenance operation. After wiping the dust on the surface of the wire rope 9, re-apply lubricant to reduce the wear of the wire rope 9 and improve the service life of the equipment.

[0035] Furthermore, the counterweight box 4 includes a box body 401, a load-bearing bar 402 and a third motor 404. The upper end surface of the box body 401 is provided with a first pulley group 408. The upper end surface of the hanger 5 is provided with a first pulley group 408. The driving mechanism 6 includes a first motor 602 and a traction wheel 601. The traction wheel 601 is driven by the first motor 602. The wire rope 9 passes through the lower end of the first pulley group 408, the upper end of the traction wheel 601 and the lower end of the second pulley group 501 and is fixed to the top platform 3 in sequence.

[0036] The first motor 602 automatically calculates the running distance of the first motor 602 through programming, and automatically gives a reversing command after reaching the set stroke, thereby controlling the up and down reciprocating movement of the sucker rod. The counterweight box 4 achieves the balance of the up and down strokes of the sucker rod, and the number of steel ropes 9 is one or more.

[0037] Furthermore, the inner end surface of the truss 1 is provided with a guide rail 102 , and the side end surface of the box body 401 is provided with a guide wheel 407 that cooperates with the guide rail 102 , and the guide wheel 407 is rotatably connected to the box body 401 .

[0038] The cooperation between the guide rail 102 and the guide wheel 407 improves the stability of the counterweight box 4 when sliding up and down, avoids interference and collision between the counterweight box 4 and the truss 1 when sliding up and down, causing equipment jamming or damage, and further improves the smoothness of oil pumping.

[0039] Furthermore, a first slide groove 405 is provided on the side end face of the box body 401, the load-bearing bar 402 is installed in the first slide groove 405 and is slidingly connected to the box body 401, the screw rod 403 is installed in the first slide groove 405 and is rotationally connected to the box body 401, the third motor 404 is fixedly installed in the first slide groove 405 and drives the screw rod 403 through the bevel gear, and the side end face of the load-bearing bar 402 is provided with a screw hole 406 that cooperates with the screw rod 403.

[0040] The third motor 404 drives the screw rod 403 to rotate, thereby controlling the extension and retraction of the load-bearing bar 402. When the equipment needs to be repaired, the controller controls the third motor 404 to drive the screw rod 403 to rotate, so that the load-bearing bar 402 slides outward along the screw rod 403 and rests on the beam 101, preventing the counterweight box 4 from falling suddenly.

[0041] Furthermore, the maintenance disk 701 is provided with a first wire pulley 706, a second wire pulley 707 and a wire pulley that cooperate with the wire rope 9. The centers of the first wire pulley 706, the second wire pulley 707 and the third wire pulley 708 are located at the three vertices of the same equilateral triangle. A brush disk 713 is provided between the first wire pulley 706 and the second wire pulley 707. The side end face of the brush disk 713 is provided with bristles 714. A wiping plate 715 is provided between the second wire pulley 707 and the third wire pulley 708. A solid lubricant 718 is provided between the third wire pulley 708 and the first wire pulley 706.

[0042] The centers of the first wire pulley 706, the second wire pulley 707 and the third wire pulley 708 are located at the three vertices of the same equilateral triangle and are rotatably connected to the maintenance disk 701. When the second motor 722 drives the maintenance disk 701 to rotate, the three sides of the maintenance disk 701 can cooperate with the wire rope 9 to achieve different functions. First, the first wire pulley 706 and the second wire pulley 707 are in contact with the wire rope 9, and the brushing disk 713 is used to brush the surface of the wire rope 9, and the brush bristles 714 made of steel wire are used to remove dust and stains on its surface. Then, the second wire pulley 707 and the third wire pulley 708 are rotated to be in contact with the wire rope 9, and the debris generated during the brushing process is wiped off by the wiping plate 715. Finally, the third wire pulley 708 and the first wire pulley 706 are rotated to be in contact with the wire rope 9, and solid lubricant 718 is applied to the wire rope 9. Users can set multiple groups of maintenance mechanisms 7 at multiple positions of the equipment to maintain the wire rope 9 at the same time according to needs, thereby improving the coverage range.

[0043] Furthermore, a first gear 709 is provided on the first wire wheel 706, a second gear 710 meshing with the first gear 709 is provided on the maintenance disk 701, a third gear 712 meshing with the second gear 710 is provided on the brush disk 713, and the brush disk 713 is installed on the maintenance disk 701 and is rotatably connected thereto.

[0044] During the operation of the equipment, the wire rope 9 will drive the first wire wheel 706 to rotate, so that the first wire wheel 706 drives the brush sweeping disc 713 to rotate through the first gear 709, the second gear 710 and the third gear 712, so that the brush sweeping disc 713 drives the bristles 714 to rotate, thereby improving the coverage range of the bristles 714, further improving the cleaning effect, and reducing maintenance blind spots.

[0045] Furthermore, a wiping plate 715 is fixedly mounted on the inner end surface of the maintenance tray 701 , a sponge 716 is provided on the wiping plate 715 , and an arc-shaped groove 717 corresponding to the position of the steel wire rope 9 is provided on the side end surface of the sponge 716 .

[0046] The sponge 716 is used to clamp the wire rope 9 to wipe off the stains and debris scraped off its surface, thereby improving the surface smoothness of the wire rope 9, making it easier to rinse and apply lubricant to it. The arc groove 717 improves the fit between the sponge 716 and the wire rope 9 and reduces friction resistance.

[0047] Furthermore, a sleeve 721 is provided on the inner end surface of the maintenance plate 701, a third slide groove 7212 is provided on the upper end surface of the sleeve 721, a first spring 7192, a first slider 719 and a second slider 720 are provided in the sleeve 721, the first slider 719 and the second slider 720 are installed in the third slide groove 7212 and are elastically slidably connected to it through the first spring 7192, and the solid lubricant 718 is fixedly installed on the first slider 719 and the second slider 720.

[0048] The elastically connected first slider 719 and second slider 720 structure enables the first slider 719 and the second slider 720 to drive the solid lubricant 718 to slide outward under the action of the first spring 7192, so that after the solid lubricant 718 is consumed, it can still maintain contact with the wire rope 9, ensuring the uniformity of the application of the solid lubricant 718.

[0049] Furthermore, a first flange 7193 is provided on the bottom edge of the first slider 719 and the second slider 720, a second flange 7211 cooperating with the first flange 7193 is provided on the top of the inner end surface of the sliding sleeve 721, the bottom edge of the first flange 7193 is chamfered, a second slide groove 7191 is provided on the side end surface of the first slider 719, a slide rod 7201 cooperating with the second slide groove 7191 is provided on the side end surface of the second slider 720, and a second spring 7213 is provided in the second slide groove 7191.

[0050] The elastically connected first slider 719 and second slider 720 structure allows the first slider 719 and second slider 720 to slide horizontally. When the first slider 719 and second slider 720 are inserted into the third sliding groove 7212, the first slider 719 and second slider 720 squeeze the second spring 7213 to contract inward, so that the first slider 719 and second slider 720 can be inserted into the third sliding groove 7212. After entering the third sliding groove 7212, they rebound under the restoring action of the second spring 7213, causing the first flange 7193 to clamp the second flange 7211, thereby preventing the first slider 719 and second slider 720 from sliding out of the third sliding groove 7212. When the solid lubricant 718 needs to be replaced, the first slider 719 and second slider 720 are pressed inward, so that the sliding rod 7201 squeezes the second spring 7213, so that the first flange 7193 can slide out of the third sliding groove 7212, and the solid lubricant 718 needs to be replaced.

[0051] Furthermore, a guardrail 301 is provided on the upper end surface of the top platform 3 , an inspection ladder 302 is provided on the lower end surface of the top platform 3 , and a dust cover 603 is provided on the upper end of the traction sheave 601 .

[0052] Workers can climb onto the top platform 3 via the maintenance ladder 302 to inspect the equipment. The guardrail 301 protects the maintenance personnel to prevent them from falling, and the dust cover 603 protects the traction wheel 601 and the first motor 602 to reduce the impact of rain and dust on the equipment.

[0053] When using this equipment, first install the equipment in place, fix the truss 1 to the upper end surface of the base 2, and install the top platform 3 on the top of the truss 1. Set the first motor 602 to run through the controller. The first motor 602 drives the traction wheel 601 to rotate. The wire rope 9 passes through the lower end of the first pulley group 408, the upper end of the traction wheel 601, and the lower end of the second pulley group 501 and is fixed to the top platform 3. Under the action of the driving mechanism 6, the suspension device 5 is driven to reciprocate up and down to realize the oil pumping operation. The counterweight box 4 moves in coordination within the truss 1, reducing the load of the first motor 602. The guide rail 102 cooperates with the guide wheel 407 to ensure that the counterweight box 4 slides up and down stably. When it is necessary to stop the machine for maintenance, the controller controls the third motor 404 to drive the screw rod 403 to rotate, so that the load-bearing bar 402 slides outward along the screw rod 403 from the first slide groove 405 on the side end face of the box body 401 and rests on the crossbeam 101 to prevent the counterweight box 4 from falling sharply. Manual maintenance is carried out. In terms of maintenance mechanism 7, the hydraulic extension The retracted rod 704 can adjust the position of the maintenance disk 701, and the second motor 722 drives the maintenance disk 701 to rotate. The centers of the first wire wheel 706, the second wire wheel 707 and the third wire wheel 708 are distributed in an equilateral triangle and are connected to the maintenance disk 701 for rotation. During the rotation of the maintenance disk 701, the first wire wheel 706 and the second wire wheel 707 are first fitted with the wire rope 9. When the wire rope 9 drives the first wire wheel 706 to rotate, the sweeping disk 713 realizes its own rotation through gear transmission. Rotate and use the bristles 714 to remove dust and stains on the surface of the wire rope 9; then rotate until the second wire pulley 707 and the third wire pulley 708 are in contact with the wire rope 9, and the sponge 716 with the arc groove 717 on the wiping plate 715 wipes off the debris generated by brushing; finally, the third wire pulley 708 and the first wire pulley 706 are in contact with the wire rope 9, and the elastically connected first slider 719 and second slider 720 drive the solid lubricant 718 to always be in contact with the wire rope 9, completing the lubricant application.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tower pumping unit, comprising a truss (1), a base (2), a top platform (3), a counterweight box (4), a hanger (5), a drive mechanism (6), a control box (8) and a wire rope (9), characterized in that: A maintenance mechanism (7) is provided on the truss (1); The truss (1) is fixedly mounted on the upper end surface of the base (2), the top platform (3) is fixedly mounted on the upper end surface of the truss (1), the counterweight box (4) is movably mounted in the truss (1), the hanger (5) is movably mounted at the front end of the truss (1), the driving mechanism (6) drives the counterweight box (4) and the hanger (5) through the wire rope (9), the maintenance mechanism (7) includes a maintenance plate (701), a connecting rod (702), a first bearing seat (703), a hydraulic telescopic rod (704), a second bearing seat (705) and a second motor (722), and cross beams (101) are evenly arranged on the truss (1), the first bearing seat (70 3) The second bearing seat (705) is fixedly mounted on the crossbeam (101), the connecting rod (702) is mounted on the second bearing seat (705) and is rotatably connected thereto, the top of the hydraulic telescopic rod (704) is rotatably connected to the first bearing seat (703), the bottom of the hydraulic telescopic rod (704) is rotatably connected to the side end face of the connecting rod (702), the maintenance disk (701) is mounted on the bottom of the connecting rod (702) and is rotatably connected thereto, the number of the maintenance disks (701) is two, and a rod body (723) is mounted on opposite ends of the two maintenance disks (701), and the second motor (722) is fixedly mounted on the connecting rod (702) to drive the maintenance disk (701); The maintenance disk (701) is provided with a first wire pulley (706), a second wire pulley (707) and a wire pulley that cooperate with the wire rope (9), wherein the centers of the first wire pulley (706), the second wire pulley (707) and the third wire pulley (708) are located at three vertices of the same equilateral triangle, a brushing disk (713) is provided between the first wire pulley (706) and the second wire pulley (707), and a side end surface of the brushing disk (713) is provided with bristles (714), a wiping plate (715) is provided between the second wire pulley (707) and the third wire pulley (708), and a solid lubricant (718) is provided between the third wire pulley (708) and the first wire pulley (706); The first guide wheel (706) is provided with a first gear (709), the maintenance disk (701) is provided with a second gear (710) meshing with the first gear (709), the brush disk (713) is provided with a third gear (712) meshing with the second gear (710), and the brush disk (713) is mounted on the maintenance disk (701) and is rotatably connected thereto.

2. The tower pumping unit according to claim 1, characterized in that: The counterweight box (4) includes a box body (401), a load-bearing bar (402) and a third motor (404); the upper end surface of the box body (401) is provided with a first pulley group (408); the upper end surface of the suspender (5) is provided with a first pulley group (408); the driving mechanism (6) includes a first motor (602) and a traction wheel (601); the traction wheel (601) is driven by the first motor (602); the steel wire rope (9) passes through the lower end of the first pulley group (408), the upper end of the traction wheel (601) and the lower end of the second pulley group (501) in sequence and is fixed to the top platform (3).

3. The tower pumping unit according to claim 2, characterized in that: The inner end surface of the truss (1) is provided with a guide rail (102), and the side end surface of the box (401) is provided with a guide wheel (407) that cooperates with the guide rail (102), and the guide wheel (407) is rotatably connected to the box (401).

4. The tower pumping unit according to claim 3, characterized in that: The side end surface of the box body (401) is provided with a first slide groove (405), the load-bearing bar (402) is installed in the first slide groove (405) and is slidably connected to the box body (401), the first slide groove (405) is provided with a screw rod (403) that is rotatably connected to the box body (401), the third motor (404) is fixedly installed in the first slide groove (405) and drives the screw rod (403) through a bevel gear, and the side end surface of the load-bearing bar (402) is provided with a screw hole (406) that cooperates with the screw rod (403).

5. The tower pumping unit according to claim 4, characterized in that: The wiping plate (715) is fixedly mounted on the inner end surface of the maintenance plate (701). A sponge (716) is provided on the wiping plate (715). The side end surface of the sponge (716) is provided with an arc groove (717) corresponding to the position of the wire rope (9).

6. The tower pumping unit according to claim 5, characterized in that: The inner end surface of the maintenance plate (701) is provided with a sliding sleeve (721), the upper end surface of the sliding sleeve (721) is provided with a third sliding groove (7212), and the sliding sleeve (721) is provided with a first spring (7192), a first slider (719) and a second slider (720). The first slider (719) and the second slider (720) are installed in the third sliding groove (7212) and are elastically slidably connected thereto via the first spring (7192). The solid lubricant (718) is fixedly installed on the first slider (719) and the second slider (720).

7. The tower pumping unit according to claim 6, characterized in that: The bottom edges of the first slider (719) and the second slider (720) are provided with a first flange (7193), the top of the inner end surface of the sliding sleeve (721) is provided with a second flange (7211) that cooperates with the first flange (7193), the bottom edge of the first flange (7193) is chamfered, the side end surface of the first slider (719) is provided with a second slide groove (7191), the side end surface of the second slider (720) is provided with a slide rod (7201) that cooperates with the second slide groove (7191), and a second spring (7213) is provided in the second slide groove (7191).

8. The tower pumping unit according to claim 7, characterized in that: The upper end surface of the top platform (3) is provided with a guardrail (301), the lower end surface of the top platform (3) is provided with an inspection ladder (302), and the upper end of the traction wheel (601) is provided with a dust cover (603).

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