Belt type pumping unit without walking beam

Abstract

The utility model discloses a non-beam belt type oil pumping unit, and relates to the technical field of oil pumping units, in particular to a non-beam belt type oil pumping unit which comprises a base, a tower and a ground foundation formed by pouring concrete, the base is installed on the ground foundation, and the tower is fixedly installed on the base. Lubricating oil in an oil pool is lifted and injected into an oil storage box through an oil feeding assembly, the lubricating oil in the oil storage box flows to a lower chain wheel through a first oil conveying pipe, the lubricating oil drips onto the lower chain wheel and a driving chain at the lower chain wheel, and therefore the lubricating oil is added to the lower chain wheel and the driving chain; lubricating oil dripping from the driving chain drips into the oil collecting box, and the lubricating oil in the oil collecting box flows back into the oil pool through the second oil conveying pipe. According to the technical scheme, lubricating oil can be continuously smeared on the driving chain, the lubricating oil is not excessively used, splashing of the lubricating oil is avoided, pollution to equipment in the tower due to splashing of the lubricating oil is avoided, and the safe operation performance of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pumping units, in particular to a beamless belt-type oil pumping unit. Background Art

[0002] On a chain-type oil pump equipped with a box-type frame, since the chain of the chain-type oil pump needs to be lubricated, there is a cavity inside the box-type frame, and lubricating oil is added to the lower end of the cavity, and the liquid level of the lubricating oil is made to be above the lower end of the chain that drives the counterweight to move. During the rotation of the chain, the lubricating oil can effectively lubricate the chain, reversing frame, centralizer and sprocket.

[0003] In the published Chinese patent application, the publication number is CN219711491U, and the patent name is: A tower-type oil pumping unit that is easy to maintain. The prior art includes a box-type frame, and two lower sprockets are rotatably connected in the box-type frame. An upper sprocket is rotatably connected in the box-type frame above the lower sprocket. The upper sprocket and the lower sprocket are connected by a chain transmission. The upper sprocket, the lower sprocket and the chain constitute a transmission mechanism, and a counterweight is slidably arranged between the two transmission mechanisms. Lubricating oil is filled in the lower end of the box-type frame, and the liquid level of the lubricating oil is not above the lower end of the chain. The prior art lubricates the chain with lubricating oil by making the liquid level of the lubricating oil not pass the lower end of the chain. Although the prior art can achieve lubrication of the chain, the prior art has certain limitations in its specific implementation.

[0004] When the prior art is implemented, the oil pump is in working condition, and the chain reciprocates around the upper sprocket and the lower sprocket under the drive of the driving device. The lower end of the chain rotates at high speed and is continuously submerged in the lubricating oil. The chain links on the chain cause the lubricating oil to slap, causing the lubricating oil to splash, and the splashing lubricating oil pollutes the internal equipment of the tower (such as the counterweight box, the bare rod slip, etc.); the way of adding lubricating oil to the chain in the prior art leads to a large amount of lubricating oil; excessive use of lubricating oil on the chain causes lubrication to splash during the reciprocating rotation of the chain, causing pollution to the upper equipment in the tower (such as belts, etc.), which affects the safe operation of the equipment in the long run. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a beamless belt-type oil pumping unit, which solves the problems raised in the above-mentioned background technology.

[0007] (II) Technical solution

[0008] To achieve the above purpose, the utility model is implemented through the following technical solutions: a beamless belt-type oil pumping unit, comprising a base, a tower, and a ground foundation cast by concrete, wherein the base is installed on the ground foundation, and the tower is fixedly installed on the base; it also includes a driving component and a lubricating component, wherein the driving component comprises an upper sprocket fixing seat, an upper sprocket, a lower sprocket fixing seat, a lower sprocket and a driving chain, wherein the upper sprocket fixing seat is fixedly installed on the inner side wall of the upper end of the tower, and the upper sprocket is rotatably arranged on the upper sprocket fixing seat; the lower sprocket fixing seat is fixedly installed on the inner side wall of the lower end of the tower, and the lower sprocket is rotatably arranged on the lower sprocket fixing seat, and the driving chain is annularly wound around the upper sprocket and the lower sprocket, and the driving chain is respectively connected to the upper sprocket and the lower sprocket. Engagement; the lubricating component includes an oil pool, an oil cylinder, an oil storage box, an oil collecting box, and an oiling assembly. The oil pool is fixedly installed on the base, and the lubricating oil is contained inside the oil pool. The oil cylinder is fixedly installed on the oil pool, and the lower end of the oil cylinder is connected to the inside of the oil pool; the oil storage box is fixedly installed on the inner side wall of the upper end part of the oil cylinder, and the oiling assembly is arranged in the oil cylinder, and the oiling assembly drives the lubricating oil in the oil pool to flow into the oil storage box; a first oil pipe is fixedly installed on the oil storage box and the two are connected, and the end of the first oil pipe away from the oil storage box is located at the lower sprocket of the driving component; the oil collecting box is fixedly installed on the inner bottom of the tower; a second oil pipe is fixedly installed on the oil pool and the two are connected, and the end of the second oil pipe away from the oil pool is connected to the oil collecting box.

[0009] Optionally, the oiling assembly includes a lubricating lower sprocket, a lubricating chain, and a lubricating upper sprocket. The lubricating lower sprocket is rotatably arranged on the inner side wall of the lower end of the oil cylinder, the lubricating upper sprocket is rotatably arranged on the inner side wall of the upper end of the oil cylinder, and the lubricating upper sprocket is located above the oil storage box. The lubricating chain is ring-shaped and wound around the lubricating lower sprocket and the lubricating upper sprocket, and the lubricating chain is respectively engaged with the lubricating lower sprocket and the lubricating upper sprocket; the height position of the oil storage box is higher than the height of the lower sprocket; the height position of the oil collecting box is higher than the height of the oil pool.

[0010] Optionally, the driving component also includes an electric motor, a reducer, and a spherical coupling. The electric motor and the reducer are fixedly mounted on the base. The output shaft end of the motor is transmission connected to the power input end of the reducer. The high-speed shaft power output end of the reducer is transmission connected to the lower sprocket through a spherical coupling; the low-speed shaft power output end of the reducer is transmission connected to the lubrication upper sprocket.

[0011] Optionally, a top platform is fixedly installed on the top of the tower, a bearing seat is fixedly installed above the top platform, and a roller is rotatably arranged on the bearing seat; the driving component also includes a counterweight box, a transmission belt, a steel wire rope, and a bare rod, the counterweight box is installed on the drive chain, one end of the transmission belt is fixedly installed on the counterweight box, the other end of the transmission belt is fixedly installed on the upper end of the steel wire rope after passing over the top of the roller, and the upper end of the bare rod is fixedly installed on the lower end of the steel wire rope.

[0012] Optionally, wind shields are fixedly installed on all four sides of the tower frame, and observation windows are provided on the wind shields. A first-layer platform is fixedly installed on the lower outer wall of the tower, a second-layer platform is fixedly installed on the upper outer wall of the tower, and a longitudinal ladder is fixedly installed on the outer wall of the tower, and the ladder is close to the first-layer platform and the second-layer platform.

[0013] Optionally, the wind shield is provided with a first inspection door and a second inspection door respectively.

[0014] (III) Beneficial effects

[0015] The utility model provides a beamless belt-type oil pumping unit, which has the following beneficial effects:

[0016] This kind of beamless belt type oil pumping unit, through the coordinated arrangement of the base, tower, driving components, and lubricating components, enables this kind of beamless belt type oil pumping unit to have the effect of effectively and reasonably adding lubricating oil to the chain. The lubricating oil in the oil pool is pulled and injected into the oil storage box through the oiling component. The lubricating oil in the oil storage box flows to the lower sprocket through the first oil delivery pipe, and the lubricating oil drips onto the lower sprocket and the driving chain at the lower sprocket, thereby adding lubricating oil to the lower sprocket and the driving chain; the lubricating oil dripping from the driving chain drips into the oil collecting box, and the lubricating oil in the oil collecting box flows back to the oil pool through the second oil delivery pipe. This technical solution can continuously apply lubricating oil to the driving chain, and there is no excessive use of lubricating oil. Compared with the prior art, it avoids the splashing of lubricating oil caused by excessive use of lubricating oil in the driving chain, and avoids the splashing of lubricating oil caused by hitting the lubricating oil liquid surface during the rotation of the driving chain (chain), thereby avoiding the pollution of the internal equipment of the tower due to the splashing of lubricating oil, avoiding the influence on the maintenance work, and improving the safe operation performance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0018] Figure 1This is a front view of a beamless belt-type oil pumping unit of the utility model;

[0019] Figure 2 This is a cross-sectional view of an oil cylinder in a beamless belt-type oil pumping unit of the utility model;

[0020] Figure 3 This is a left view of a beamless belt-type oil pumping unit of the utility model;

[0021] Figure 4 This is a right side view of a beamless belt-type oil pumping unit of the utility model;

[0022] Figure 5 This is a cross-sectional view of a beamless belt-type oil pumping unit of the utility model;

[0023] Figure 6 for Figure 5 The enlarged structural diagram at A in the middle;

[0024] Figure 7 for Figure 5 Enlarged structural diagram at B in the middle.

[0025] In the figure: 1. Ground foundation; 2. Oil pool; 3. Lubricate lower sprocket; 4. Lubricate chain; 5. Oil drum; 6. Oil storage box; 7. Lubricate upper sprocket; 8. First oil pipeline; 9. Second oil pipeline; 10. Tower; 11. Top platform; 12. Bearing seat; 13. Roller; 14. Drive belt; 15. Ladder; 16. Second-floor platform; 17. Second inspection door; 18. First inspection door; 19. Speed ​​reducer; 20. Wellhead assembly; 21. Rope hanger; 22. Wire rope; 23. Belt connector; 24. Wind shield; 25. Observation window; 26. Front cage; 27. Rear cage; 28. Motor; 29. ​​Ball coupling; 31. Drive chain; 32. Upper sprocket; 33. Upper sprocket fixing seat; 34. Lower sprocket fixing seat; 35. Lower sprocket; 36. Counterweight box; 37. First platform; 39. Oil collecting box. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indications or implications.

[0027] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments.

[0028] See also Figures 1 to 7 The utility model provides a technical solution: a beamless belt-type oil pumping unit, comprising a base, a tower 10, and a ground foundation 1 cast with concrete, the base is installed on the ground foundation 1, and the tower 10 is fixedly installed on the base.

[0029] A beamless belt-type oil pumping unit also includes a driving component and a lubricating component.

[0030] The driving component is a power mechanism of the beamless belt pumping unit, and is used to drive the polished rod of the pumping unit to move back and forth in the oil well. The lubricating component is used to add lubricating oil to the driving component.

[0031] The driving component includes an upper sprocket fixing seat 33, an upper sprocket 32, a lower sprocket fixing seat 34, a lower sprocket 35 and a driving chain 31. The upper sprocket fixing seat 33 is fixedly mounted on the inner side wall of the upper end of the tower 10, and the upper sprocket 32 ​​is rotatably mounted on the upper sprocket fixing seat 33. The lower sprocket fixing seat 34 is fixedly mounted on the inner side wall of the lower end of the tower 10, and the lower sprocket 35 is rotatably mounted on the lower sprocket fixing seat 34. The driving chain 31 is annularly wound around the upper sprocket 32 ​​and the lower sprocket 35, and the driving chain 31 is meshed with the upper sprocket 32 ​​and the lower sprocket 35 respectively.

[0032] The driving components also include an electric motor 28, a reducer 19, and a ball coupling 29. The electric motor 28 and the reducer 19 are fixedly mounted on the base. The output shaft end of the electric motor 28 is transmission-connected to the power input end of the reducer 19, and the high-speed shaft power output end of the reducer 19 is transmission-connected to the lower sprocket 35 through the ball coupling 29.

[0033] The motor 28 can be a permanent magnet motor. The reducer 19 is a dual output shaft reducer. After the motor 28 is started, the output of the motor 28 drives the reducer 19, and the high-speed shaft power output end of the reducer 19 drives the lower sprocket 35 to rotate through the ball coupling 29, and the lower sprocket 35 rotates on the lower sprocket fixing seat 34. The lower sprocket 35 drives the drive chain 31 engaged with it to rotate, that is, the drive chain 31 rotates around the upper sprocket 32 ​​and the lower sprocket 35.

[0034] The lubricating components include an oil pool 2, an oil cylinder 5, an oil storage box 6, an oil collecting box 39, and an oiling assembly. The oil pool 2 is fixedly mounted on the base, and the oil pool 2 contains lubricating oil. The oil cylinder 5 is fixedly mounted on the oil pool 2, and the lower end of the oil cylinder 5 is connected to the inside of the oil pool 2. The oil storage box 6 is fixedly mounted on the inner side wall of the upper end of the oil cylinder 5. The oiling assembly is arranged in the oil cylinder 5, and the oiling assembly drives the lubricating oil in the oil pool 2 to flow into the oil storage box 6. A first oil delivery pipe 8 is fixedly mounted on the oil storage box 6 and the two are connected. The end of the first oil delivery pipe 8 away from the oil storage box 6 is located at the lower sprocket 35 of the driving component. The oil collecting box 39 is fixedly mounted on the inner bottom of the tower 10. A second oil delivery pipe 9 is fixedly mounted on the oil pool 2 and the two are connected. The end of the second oil delivery pipe 9 away from the oil pool 2 is connected to the oil collecting box 39.

[0035] Among them, the oil pool 2 and the oil storage box 6 are both used to hold lubricating oil. The oil collecting box 39 is used to collect the lubricating oil dripping from the drive chain 31. The lubricating oil in the oil pool 2 is pulled and injected into the oil storage box 6 through the oiling assembly, and the lubricating oil in the oil storage box 6 flows to the lower sprocket 35 through the first oil delivery pipe 8, and the lubricating oil drips onto the lower sprocket 35 and the drive chain 31 at the lower sprocket 35, thereby adding lubricating oil to the lower sprocket 35 and the drive chain 31, and the lubricating oil is applied to the drive chain 31 to increase the lubricity of the drive chain 31. The lubricating oil dripping from the drive chain 31 drips into the oil collecting box 39, and the lubricating oil in the oil collecting box 39 flows back to the oil pool 2 through the second oil delivery pipe 9, thereby realizing the recycling of the lubricating oil, which is beneficial to the saving of lubricating oil and avoiding excessive use of lubricating oil.

[0036] Specifically, the oiling assembly includes a lubricating lower sprocket 3, a lubricating chain 4, and a lubricating upper sprocket 7. The lubricating lower sprocket 3 is rotatably arranged on the inner side wall of the lower end of the oil cylinder 5, and the lubricating upper sprocket 7 is rotatably arranged on the inner side wall of the upper end of the oil cylinder 5, and the lubricating upper sprocket 7 is located above the oil storage box 6. The lubricating chain 4 is annularly wound around the lubricating lower sprocket 3 and the lubricating upper sprocket 7, and the lubricating chain 4 is respectively engaged with the lubricating lower sprocket 3 and the lubricating upper sprocket 7. The height position of the oil storage box 6 is higher than the height of the lower sprocket 35. The height position of the oil collecting box 39 is higher than the height of the oil pool 2. The low-speed shaft power output end of the reducer 19 is transmission-connected with the lubricating upper sprocket 7.

[0037] Among them, the oil pool 2 is a box structure for storing lubricating oil. The oil pool 2 is connected to the lower end of the oil barrel 5, and the lubricating oil in the oil pool 2 can flow into the lower end of the oil barrel 5. The lubricating lower sprocket 3 is completely or partially submerged below the liquid surface of the lubricating oil, and the lubricating chain 4 is partially submerged below the liquid surface of the lubricating oil. The motor 28 drives the reducer 19 to operate, and the low-speed shaft power output end of the reducer 19 drives the lubricating upper sprocket 7 to rotate. The lubricating upper sprocket 7 rotates in the oil barrel 5. The lubricating upper sprocket 7 drives the lubricating chain 4 to rotate, and the lubricating chain 4 rotates around the lubricating upper sprocket 7 and the lubricating lower sprocket 3. During the rotation of the lubricating chain 4, it is soaked in lubricating oil, and the lubricating chain 4 drives a small amount of lubricating oil to move. A small amount of lubricating oil moves to the lubricating upper sprocket 7 through the lubricating chain 4, and a small amount of lubricating oil drips into the oil storage box 6 through the lubricating upper sprocket 7. The oil storage box 6 collects the lubricating oil. The lubricating oil in the oil storage box 6 flows to the lower sprocket 35 and the drive chain 31 through the first oil delivery pipe 8, and the lubricating oil lubricates the drive chain 31. The excess lubricating oil on the drive chain 31 drips into the oil collecting box 39. The lubricating oil in the oil collecting box 39 flows back to the oil pool 2 through the second oil delivery pipe 9.

[0038] More specifically, a top platform 11 is fixedly installed on the top of the tower 10, a bearing seat 12 is fixedly installed above the top platform 11, and a roller 13 is rotatably installed on the bearing seat 12. The driving components also include a counterweight box 36, a transmission belt 14, a steel wire rope 22, and a bare rod. The counterweight box 36 is installed on the driving chain 31, one end of the transmission belt 14 is fixedly installed with the counterweight box 36, and the other end of the transmission belt 14 is fixedly installed with the upper end of the steel wire rope 22 after passing over the top of the roller 13, and the upper end of the bare rod is fixedly installed with the lower end of the steel wire rope 22. A wellhead device 20 is fixedly installed at the lower end of the bare rod. The wellhead device 20 refers to a device used to implement oil production in an oil well or at the wellhead.

[0039] The bearing seat 12 is used to support the roller 13. The roller 13 can rotate on the bearing seat 12. The counterweight box 36 is longitudinally slidably arranged inside the tower 10. When the drive chain 31 rotates around the upper sprocket 32 ​​and the lower sprocket 35, the drive chain 31 drives the counterweight box 36 to move up and down on the tower 10. When the counterweight box 36 moves upward, the counterweight box 36 is lowered by the transmission belt 14, the wire rope 22, and the light rod to pull the wellhead device 20. When the counterweight box 36 moves downward, the counterweight box 36 is raised by the transmission belt 14, the wire rope 22, and the light rod to pull the wellhead device 20.

[0040] The driving belt 14 is fixedly installed with the steel wire rope 22 through the belt connector 23. The lower end of the steel wire rope 22 is fixedly installed with the polished rod through the rope hanger 21 and the polished rod slip.

[0041] Specifically, wind shields 24 are fixedly installed on all sides of the tower 10, and observation windows 25 are provided on the wind shields 24. A first-layer platform 37 is fixedly installed on the lower outer wall of the tower 10, and a second-layer platform 16 is fixedly installed on the upper outer wall of the tower 10. A longitudinal ladder 15 is fixedly installed on the outer wall of the tower 10, and the ladder 15 is close to the first-layer platform 37 and the second-layer platform 16. The wind shield 24 is provided with a first inspection door 18 and a second inspection door 17, respectively.

[0042] The wind shield 24 is used to seal the side walls of the tower 10 to prevent the wind from blowing the belts inside the tower 10 and affecting the pumping operation. The observation window 25 is used to facilitate the staff to check the internal situation of the tower 10. The first inspection door 18 and the second inspection door 17 are used to facilitate the staff to enter the tower 10. The ladder 15 is used to facilitate the staff to climb to the first platform 37, the second platform 16, and the top platform 11. The front cage 26 and the rear cage 27 are fixedly installed on the outer wall of the tower 10 and located at the ladder 15. The front cage 26 and the rear cage 27 are used to protect the staff when climbing the ladder 15.

[0043] 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 within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A beamless belt pumping unit, comprising a base, a tower (10), and a ground foundation (1) cast with concrete, wherein the base is mounted on the ground foundation (1), and the tower (10) is fixedly mounted on the base; Features: It also includes drive components and lubrication components. The driving component comprises an upper sprocket fixing seat (33), an upper sprocket (32), a lower sprocket fixing seat (34), a lower sprocket (35) and a driving chain (31); the upper sprocket fixing seat (33) is fixedly mounted on the inner side wall of the upper end of the tower (10); the upper sprocket (32) is rotatably mounted on the upper sprocket fixing seat (33); the lower sprocket fixing seat (34) is fixedly mounted on the inner side wall of the lower end of the tower (10); the lower sprocket (35) is rotatably mounted on the lower sprocket fixing seat (34); the driving chain (31) is annularly wound around the upper sprocket (32) and the lower sprocket (35), and the driving chain (31) is meshed with the upper sprocket (32) and the lower sprocket (35) respectively; The lubricating component comprises an oil pool (2), an oil cylinder (5), an oil storage box (6), an oil collecting box (39), and an oiling assembly. The oil pool (2) is fixedly mounted on a base. The oil pool (2) contains lubricating oil. The oil cylinder (5) is fixedly mounted on the oil pool (2), and the lower end of the oil cylinder (5) is in communication with the interior of the oil pool (2). The oil storage box (6) is fixedly mounted on the inner side wall of the upper end of the oil cylinder (5). The oiling assembly is arranged in the oil cylinder (5). The oiling assembly drives the oil pool (2) to move the oil into the oil collection box. The lubricating oil flows into the oil storage box (6); a first oil delivery pipe (8) is fixedly mounted on the oil storage box (6) and the two are in communication, and an end of the first oil delivery pipe (8) away from the oil storage box (6) is located at the lower sprocket (35) of the driving component; the oil collecting box (39) is fixedly mounted on the inner bottom of the tower (10); a second oil delivery pipe (9) is fixedly mounted on the oil pool (2) and the two are in communication, and an end of the second oil delivery pipe (9) away from the oil pool (2) is in communication with the oil collecting box (39).

2. A beamless belt pumping unit according to claim 1, Features: The oiling assembly comprises a lubricating lower sprocket (3), a lubricating chain (4), and a lubricating upper sprocket (7); the lubricating lower sprocket (3) is rotatably arranged on the inner side wall of the lower end of the oil barrel (5); the lubricating upper sprocket (7) is rotatably arranged on the inner side wall of the upper end of the oil barrel (5); the lubricating upper sprocket (7) is located above the oil storage box (6); the lubricating chain (4) is annularly wound around the lubricating lower sprocket (3) and the lubricating upper sprocket (7); and the lubricating chain (4) is respectively meshed with the lubricating lower sprocket (3) and the lubricating upper sprocket (7); the height of the oil storage box (6) is higher than the height of the lower sprocket (35); and the height of the oil collecting box (39) is higher than the height of the oil pool (2).

3. A beamless belt pumping unit according to claim 2, Features: The driving component further comprises an electric motor (28), a reducer (19), and a spherical coupling (29); the electric motor (28) and the reducer (19) are fixedly mounted on the base; the output shaft end of the electric motor (28) is transmission-connected to the power input end of the reducer (19); the high-speed shaft power output end of the reducer (19) is transmission-connected to the lower sprocket (35) via the spherical coupling (29); and the low-speed shaft power output end of the reducer (19) is transmission-connected to the lubricating upper sprocket (7).

4. A beamless belt pumping unit according to claim 3, Features: A top platform (11) is fixedly mounted on the top of the tower (10), a bearing seat (12) is fixedly mounted above the top platform (11), and a roller (13) is rotatably mounted on the bearing seat (12); the driving component further comprises a counterweight box (36), a transmission belt (14), a steel wire rope (22), and a bare rod; the counterweight box (36) is mounted on the driving chain (31), one end of the transmission belt (14) is fixedly mounted on the counterweight box (36), the other end of the transmission belt (14) is fixedly mounted on the upper end of the steel wire rope (22) after passing over the top of the roller (13), and the upper end of the bare rod is fixedly mounted on the lower end of the steel wire rope (22).

5. The beamless belt pumping unit according to claim 1, Features: Wind shields (24) are fixedly mounted on all sides of the tower (10), and observation windows (25) are provided on the wind shields (24). A first-layer platform (37) is fixedly mounted on the lower outer wall of the tower (10), and a second-layer platform (16) is fixedly mounted on the upper outer wall of the tower (10). A longitudinal ladder (15) is fixedly mounted on the outer wall of the tower (10), and the ladder (15) is close to the first-layer platform (37) and the second-layer platform (16).

6. A beamless belt pumping unit according to claim 5, Features: The wind shield (24) is provided with a first inspection door (18) and a second inspection door (17), respectively.

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