Chute reversing structure for balancing weight of tower type underlying power pumping unit

Abstract

The utility model relates to a sliding chute reversing structure of a balancing weight of a tower type underneath power pumping unit, which comprises a driving device arranged on a wellbay (26) below a tower frame (14) and a power transmission device, and is characterized in that an upper chain wheel (15) and a lower chain wheel (27) which are used for driving a main chain (18) are arranged on the inner side of the tower frame (14); a chain clamping device (29) on a main chain (18) pulls sliding groove frames (30) on the two sides of the bottom of a balance weight (22) and then drives the balance weight (22) to move up and down in a reciprocating mode in a tower (14), and when the chain clamping device (29) rotates around an upper chain wheel (15) and a lower chain wheel (27) by a circle, a translation sliding rod (291) on the chain clamping device (29) conducts reciprocating translation once in sliding grooves (31) of the sliding groove frames (30). The device has the advantages of being good in control performance and stable and reliable in operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to tower type oil pumping unit field, concretely is a kind of tower type lower power oil pumping machine's balance weight's chute reversing structure. BACKGROUND

[0002] Tower type oil pumping unit, it cancels beam, only tower and platform, utilize belt and belt roller, or chain and steel wire rope, the circumferential motion of reversible motor is converted into the up-down linear motion of pumping rod, this kind of tower type oil pumping unit usually installs reversible motor and speed reducer on the platform on the top of tower, later evolves and installs reversible motor and speed reducer on the well platform under tower.

[0003] The authorized announcement date is: May 19, 2023, the authorized announcement number is: 219045406U, and the name is the technical scheme of the Chinese utility model patent of tower type lower power oil pumping machine, which is recorded as "the tower type lower power oil pumping machine, its main technical features are: main sprocket is installed on the lower part of the frame one side, upper sprocket is installed on the outer side of axle seat, guide wheel is installed on the right end of platform;Power chain one end is fixed on the upper end of counterweight, after passing through upper sprocket, it is returned to the upper end after passing through main sprocket, and the end is fixed on the lower end of counterweight, one end of belt is fixed on the upper end of counterweight, the other end passes through belt roller, crosses guide wheel and is connected to pumping rod hanger on the lower side."

[0004] The applicant patent application number 202311639190.7 described in "a kind of mechanical reversing tower type oil pumping unit", it is also a lower power oil pumping machine, and it is also a mechanical reversing oil pumping machine, i.e. a kind of mechanical structure changes the circumferential motion of motor into the up-down linear motion of balance weight of tower type oil pumping unit, to complete the up-down linear reciprocating motion of pumping rod, for the above-mentioned technology, an improved technical scheme of tower type oil pumping machine balance weight's chute reversing structure is proposed. UTILITY MODEL CONTENTS

[0005] The utility model aims at: provide a kind of tower type oil pumping machine balance weight's chute reversing structure, to obtain good controllability, stable and reliable operation, realize long-period safe production.

[0006] To achieve the above object, the utility model provides the following technical scheme: including driving device and power transmission device on the well platform 26 installed below the tower 14, upper sprocket 15 and lower sprocket 27 for driving main chain 18 are installed on the inside of tower 14, chain connector 29 on main chain 18 pulls the chute frame 30 on the bottom of both sides of counterweight 22, then drives counterweight 22 to do up-down reciprocating operation in tower 14, while chain connector 29 is rotated one round around upper sprocket 15 and lower sprocket 27, translation slide bar 291 on chain connector 29 is translated once in the chute 31 of chute frame 30.

[0007] Its characterized in that: the balance weight 22 two sides are installed with a rectangular chute frame 30 respectively, the inside of chute frame 30 is enclosed to form a rectangular chute 31, and the upper edge of two chute frames 30 is welded on the bottom of the two sides of balance weight 22;Chain connector 29 is installed on main chain 18 through two chain link shafts 297, and the translation slide rod 291 is extended into the chute 31, the body part of chain connector 29 is "U" shape, and is provided with a through hole 295, and the other side is provided with a translation slide rod 291 corresponding to the through hole 295, and the body of translation slide rod 291 is smooth cylinder, and one end is fixed with the body of chain connector 29.

[0008] Compared with the prior art, the utility model has the advantages of good control performance, and is durable.

[0009] 1, gear drives chain connector, and the balance weight is driven up and down linear motion, and the structure is simpler;

[0010] 2, balance weight and other parts do not need to be sealed and installed, and the balance weight is more convenient to maintain. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the perspective view of the utility model;

[0012] Figure 2 It is Figure 1 The reduced view of partial exploded view;

[0013] Figure 3 It is Figure 1 The reduced view of front view;

[0014] Figure 4 It is Figure 3 The right view of

[0015] Figure 5 It is Figure 1 The left lower 45 degree angle reduced view;

[0016] Figure 6 It is Figure 3 The enlarged view of lower chain wheel 27, auxiliary chain 28 and main chain 18;

[0017] Figure 7 It is the enlarged view of chain connector 29 and chute frame 31;

[0018] Figure 8 It is Figure 4 The partial enlarged view;

[0019] Figure 9 It is the axial section view of the body of chain connector 29;

[0020] Figure 10This is a cross-sectional view of the CC plane of the slide box 30 below the counterweight 22;

[0021] Figure 11 for Figure 9 Top view;

[0022] Figure 12 for Figure 9 A bottom view;

[0023] Figure 13 Assembly drawing for upper sprocket 15, lower sprocket 27, main chain 18, slide frame 30, and chain clamp 29;

[0024] Figure 14 A schematic diagram showing the upward position of the slide frame 30 and the chain connector 29;

[0025] Figure 15 A schematic diagram showing the slide frame 30 and the chain connector 29 at the highest point of the upward movement;

[0026] Figure 16 This is a schematic diagram showing the downward position of the slide frame 30 and the chain clamp 29.

[0027] In the diagram: 10. Platform frame, 11. Roller shaft, 12. Roller, 13. Belt, 14. Tower, 15. Upper sprocket, 16. Upper sprocket shaft, 17. Shaft bracket, 18. Main chain, 19. Support rod seat, 20. Support rod, 21. Connector, 22. Counterweight, 23. Reducer, 24. Reducer shaft, 25. Reducer sprocket, 26. Well platform, 27. Lower sprocket, 28. Secondary chain, 29. Chain clamp, 291. Translation slide bar, 292. Side wall, 293. Horizontal wall, 294. Chain cavity, 295. Through hole, 30. Slide frame, 31. Slide groove, 32. Motor, 33. Pin.

[0028] Regarding the part numbers and descriptions above: The part numbers are not ordered in natural number order; In the attached drawings, most parts are existing products, such as: platform 10 to tower 14; upper sprocket 15 to secondary chain 28, etc., while chain clamp 29, and translation slide bar 291, side wall 292, transverse wall 293, chain cavity 294, through hole 295, slide frame 30, slide 31, etc. are new or improved structural parts.

[0029] like Figure 1 As shown: Except for belt 13, connector 21, counterweight 22, reducer 23, motor 32, etc., which are single parts, some of the others are in pairs or fours. Since they have the same function but different positions, some are in symmetrical positions on the left and right / front and back. For the sake of clarity, only the numbers of the left / front side are given, and the numbers of the right / back or other positions are omitted. For example, tower 14 to support rod 20, etc.; reducer shaft 24 to chain clamp 29, etc. are all in pairs. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort should be understood to fall within the protection scope of the present utility model.

[0031] This implementation example Figures 1-5 as well as Figures 13-16 As shown. Inside the 14-meter-high steel tower 14, a main chain 18 is installed via an upper sprocket shaft 16, a shaft frame 17, an upper sprocket 15, and a lower sprocket 27. The main chain 18 forms a closed loop between the upper sprocket 15 and the lower sprocket 27. A chain clamp 29 is installed on the main chain 18 via two pins 33. The diameter and spacing of the two pin holes 296 on the chain clamp 29 are consistent with the diameter and spacing of the pin holes on the main chain 18, thus securing the chain clamp 29. The translation slide rod 291 of the chain clamp 29 points towards the side of the counterweight 22 during installation, and the translation slide rod 291 is connected to the transverse wall 293. It is integrated and can be installed and fixed through the through hole 295 (welding, riveting). The translation slide rod 291 extends into the slide frame 30, pulls the slide frame 30 on both sides of the bottom of the counterweight 22, and then drives the counterweight 22 to move up and down reciprocally in the tower 14. The counterweight 22 is calculated based on a drilling depth of 1200 meters (1200 meters of sucker rod + sucker pump + pulling resistance). The weight of the counterweight 22 is 5 tons, so that the forces at both ends of the roller 12 are nearly balanced. While the chain clamp 29 rotates around the upper sprocket 15 and the lower sprocket 27 for one revolution, the translation slide rod 291 on the chain clamp 29 moves back and forth once in the slide groove 31 of the slide frame 30.

[0032] Chain clamp 29 Figure 7 , Figures 9-12 As shown, a rectangular sliding frame 30 is welded to the lower ends of both sides of the counterweight 22. The inner sides of the sliding frame 30 form a rectangular sliding groove 31. The upper parts of the two sliding frames 30 are welded to the bottom of both sides of the counterweight 22. The translational sliding rod 291 extends horizontally into the sliding groove 31. The main body of the chain clamp 29 is a side-mounted "U" shape and has a through hole 295 for installation. The translational sliding rod 291 is installed on the other side corresponding to the through hole 295. The translational sliding rod 291 is a smooth cylinder, and one end is fixed to the main body of the chain clamp 29.

[0033] In this embodiment, the motor is selected from the market 380V, 30kW TYK-200L2-22-10-B3 type, the supporting reducer is selected from K127-225B type, the stroke of the sucker rod installed on the pumping well is 8 meters, and one working cycle of the sucker rod is 15 seconds, that is, the sucker rod is lifted / descended four times per minute, and the obtained oil is sent to the external pipeline network through the wellhead pipe valve.

[0034] For convenience of description, one working cycle is roughly divided into four stages: the first stage is the upward movement of the counterweight 22, as shown in Figure 13 、 14 , the translation slide rod 291 on the chain connector 29 "linearly" pushes the sliding groove frame 30 to drive the counterweight 22 to move upward; the second stage is that the translation slide rod 291 on the chain connector 29 moves along the upper sprocket 15 in an arc, and the translation slide rod 291 slides in the sliding groove 31 from one end to the other end in an "arc line", as shown in Figure 15 , which itself and the counterweight 22 are converted from upward to downward together; the third stage is that the translation slide rod 291 on the chain connector 29 "linearly" pulls the sliding groove frame 30 to drive the counterweight 22 to move downward to the position of contacting the lower sprocket 27, as shown in Figure 16 ; the fourth stage is that the translation slide rod 291 on the chain connector 29 also moves along the lower sprocket 27 in an arc, and the translation slide rod 291 slides in the sliding groove 31 from one end (right) to the other end (left), which itself and the counterweight 22 are converted from downward to upward together, which is one movement cycle, as shown in Figure 13 、 16 , the circular motion of the motor 32 through the reducer 23 is converted into the up-down linear reciprocating motion, and the pumping work of pulling the sucker rod by the counterweight 22 is completed.

[0035] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, it means that there is a feature, step, operation, device, component, and / or combination thereof, such as the upper sprocket 15, the main chain 18, the lower sprocket 27, the chain connector 29, etc., which are installed on both sides.

[0036] The relative arrangement of parts and steps, numerical expressions, and values set forth in these embodiments, unless otherwise specifically stated, do not limit the scope of the present application. At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The technology, methods and equipment known to those skilled in the related art can not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the authorized description. In the examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of exemplary embodiments can have different values.

[0037] In the description of the present application, it should be understood that the orientation words such as "front, rear, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation, therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself, such as the description of the upper sprocket 15, the lower sprocket 27, the counterweight 22, the translational slide rod 291 position and the like.

[0038] For the convenience of description, spatial relative terms such as "above", "upper", "upper surface", "upper" and the like can be used herein to describe the spatial positional relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "above" other devices or structures will be positioned "below" or "below" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly. As described above, and the like.

[0039] In addition, it should be noted that the words "first", "second" and the like can be used to limit parts, only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore cannot be understood as a limitation on the scope of protection of the present application.

[0040] In the present embodiment, it also relates to the "Tower type pumping unit well repair let place mechanism", CN202421087907.1, that is, the movable structure part of the bottom platform, which is completely described in the previous patent application file of the applicant.

[0041] In addition to the new technology involved in the present application, some existing technologies will also be used and will not be described in detail here. Although embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A chute reversing structure for the counterweight of a tower-type bottom-mounted power pumping unit, comprising a drive device and a power transmission device installed on a well platform (26) below the tower (14); The upper sprocket (15) and the lower sprocket (27) for driving the main chain (18) are installed inside the tower (14), the chain clasp (29) on the main chain (18) pulls the chute frame (30) on both sides of the bottom of the counterweight (22), and then drives the counterweight (22) to make up-and-down reciprocating operation in the tower (14), while the chain clasp (29) rotates one round around the upper sprocket (15) and the lower sprocket (27), the translation slide rod (291) on the chain clasp (29) reciprocates once in the chute (31) of the chute frame (30).

2. The slider reversing structure of the balance weight of a tower type under-located power oil pumping machine according to claim 1, characterized in that: The rectangular chute frame (30) is installed on both sides of the bottom of the counterweight (22), the chute (31) is formed by the inside of the chute frame (30), the upper edge of the two chute frames (30) is welded on the bottom of both sides of the counterweight (22); the chain clasp (29) is installed on the main chain (18) through the two link shafts (297), the translation slide rod (291) is extended into the chute (31), the body of the chain clasp (29) is "U" shaped, and the through hole (295) is formed, the translation slide rod (291) is installed on the other side corresponding to the through hole (295), the body of the translation slide rod (291) is smooth cylinder, and one end is fixed with the body of the chain clasp (29).

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