A beamless pumping unit

Abstract

The utility model belongs to the oil extraction technical field, especially relate to a beamless pumping unit. A beamless pumping unit, including base and bottom support, the bottom support front end is equipped with the inclined stand, the inclined stand top is equipped with the crown wheel, the bottom support upper portion is equipped with motor, the output of motor is equipped with worm, the middle part of inclined stand is equipped with second chain wheel and first chain wheel, the chain is set up between second chain wheel and first chain wheel, is equipped with the wire rope fixer on chain, wire rope one end is equipped with the rope hanger, the other end passes through crown wheel and wire rope fixer fixed connection, the input of first chain wheel is connected with driven gear, driven gear is connected with worm wheel, and worm wheel and worm are intermeshed. The utility model discloses through wire rope fixer on the chain fixed reciprocating motion between first chain wheel and second chain wheel, thereby drive the up-down movement of the rope hanger on wire rope, realize pumping operation, and the chain adopts the friction ring connection with the roller, and the stress is even, and the maintenance is convenient.

Description

Technical Field

[0001] This utility model belongs to the field of oil extraction technology, and specifically relates to a beamless pumping unit. Background Technology

[0002] Currently, surface oil production equipment used in oilfields—pumping units—are mainly divided into beam-type and beamless (vertical) types. Beam-type pumping units are typical four-bar linkages, with mature technology and high reliability, and have long dominated the oil production equipment market. However, they have disadvantages such as high material consumption, high energy consumption, and difficulty in achieving long strokes. Beamless pumping units, due to their advantages of long strokes, low dynamic load, low material consumption, and low energy consumption, represent the development direction of pumping units and are increasingly widely used in various oilfields. Beamless pumping units are mainly divided into electronic commutation and mechanical commutation based on their commutation principle. The reliability of pumping units using electronic commutation is limited by the lifespan of the electronic control components, resulting in high maintenance costs, and they are only used in small-scale trials in various oilfields. In contrast, beamless pumping units using mechanical commutation have demonstrated higher reliability and longer service life, and have achieved better promotion and application in various oilfields. Mechanically reversing beamless pumping units are mainly chain-type, but the current chain-type pumping units have complex reversing joint stress, which affects their reliability. Moreover, chain maintenance requires special tools and is complicated to operate. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this utility model is to provide a beamless oil pumping unit. A wire rope retainer fixed to the chain reciprocates between the first and second chain wheels, thereby driving the wire rope to move up and down around the overhead wheel. The wire rope then drives the suspension device to move up and down, achieving oil pumping operations. The chain uses friction rings with rollers for connection, ensuring uniform force distribution and convenient maintenance.

[0004] The technical solution of this utility model is as follows: a beamless oil pumping unit includes a base, a bottom support on the upper part of the base, the front end of the bottom support being inclined, an inclined frame at the front end of the bottom support, a top wheel on the top of the inclined frame, a wire rope on the top wheel, a motor on the upper part of the bottom support, a worm gear at the output end of the motor, a second chain wheel and a first chain wheel sequentially arranged from top to bottom in the middle of the inclined frame, a chain sleeved between the second chain wheel and the first chain wheel, a wire rope fixing device on the chain, a suspension device at one end of the wire rope, and the other end passing through the top wheel and fixedly connected to the wire rope fixing device, a driven gear connected to the input end of the first chain wheel, a worm gear connected to the driven gear, and the worm gear meshing with the worm.

[0005] The crane wheel has a crane axle in the middle, and the crane axle is rotatably connected to the top of the inclined frame. The crane wheel body has multiple weight-reducing holes evenly distributed along the axis.

[0006] The inclined frame has multiple fixed crossbars inside and is a telescopic structure.

[0007] The wire rope fastener has a bearing in the middle, which is fixedly connected to the chain. The body of the wire rope fastener can rotate 360 ​​degrees around the bearing, and the body of the wire rope fastener has a wire rope fixing end.

[0008] The chain includes a first connecting block and a second connecting block, and a chain bearing is connected between the first connecting block and the second connecting block. A friction ring is provided between the chain bearing and the first connecting block or the second connecting block.

[0009] The friction ring has multiple evenly distributed rollers inside.

[0010] The technical advantages of this utility model are as follows: 1. This utility model uses a wire rope fixing device fixed on the chain to reciprocate between the first and second chain wheels, thereby driving the wire rope to move up and down around the overhead crane wheel. The wire rope drives the suspension device to move up and down, thus realizing the oil pumping operation. 2. The chain of this utility model adopts a friction ring connection with rollers, which ensures uniform force distribution and convenient maintenance.

[0011] The following will provide further explanation in conjunction with the accompanying drawings. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of a beamless oil pumping unit according to this utility model.

[0013] Figure 2 This is a side view of the structure of a beamless pumping unit according to this utility model.

[0014] Figure 3 This is a schematic diagram of the chain structure of this utility model.

[0015] Reference numerals: 1-Base; 2-Bottom bracket; 3-Motor; 4-Worm gear; 5-First chain wheel; 6-Chain; 7-Wire rope fixing device; 8-Second chain wheel; 9-Wire rope; 10-Fixed crossbar; 11-Inclined frame; 12-Heavy crane shaft; 13-Heavy crane wheel; 14-Weight reduction hole; 15-Driven gear; 16-Worm gear; 17-Suspension device; 18-Bearing; 19-Wire rope fixing end; 61-Friction ring; 62-First connecting block; 63-Roller; 64-Chain bearing; 65-Second connecting block. Detailed Implementation Example 1

[0016] like Figures 1-3As shown, a beamless oil pumping unit includes a base 1, a bottom support 2 on the upper part of the base 1, the front end of the bottom support 2 being inclined, an inclined frame 11 at the front end of the bottom support 2, a top wheel 13 on the top of the inclined frame 11, a wire rope 9 on the top wheel 13, a motor 3 on the upper part of the bottom support 2, a worm gear 4 at the output end of the motor 3, a second chain wheel 8 and a first chain wheel 5 arranged sequentially from top to bottom in the middle of the inclined frame 11, a chain 6 sleeved between the second chain wheel 8 and the first chain wheel 5, a wire rope fixing device 7 on the chain 6, a suspension device 17 at one end of the wire rope 9, and the other end passing through the top wheel 13 and fixedly connected to the wire rope fixing device 7, a driven gear 15 connected to the input end of the first chain wheel 5, a worm gear 16 connected to the driven gear 15, and the worm gear 16 meshing with the worm gear 4.

[0017] In use, the motor 3 rotates, which in turn drives the worm gear 4 to rotate the worm wheel 16 and the driven gear 15. The driven gear 15 drives the first chain wheel 5 to rotate, which in turn drives the chain 6 and the second chain wheel 8 to rotate. During the movement of the chain 6, the wire rope fixing device 7 reciprocates between the first chain wheel 5 and the second chain wheel 8, thereby enabling the wire rope fixing device 7 to drive the wire rope 9 to move up and down around the overhead wheel 13. The wire rope 9 then drives the suspension device 17 to move up and down, thus achieving the oil pumping operation. In this invention, the wire rope fixing device, fixed to the chain, reciprocates between the first chain wheel and the second chain wheel, thereby driving the wire rope to move up and down around the overhead wheel. The wire rope then drives the suspension device to move up and down, thus achieving the oil pumping operation. Example 2

[0018] Based on Embodiment 1, in this embodiment, preferably, the crane wheel 13 is provided with a crane shaft 12 in the middle, the crane shaft 12 is rotatably connected to the top of the inclined frame 11, and the crane wheel 13 body is provided with a plurality of weight reduction holes 14 evenly along the axis.

[0019] When this utility model is in use, the crane axle 12 is rotatably connected to the top of the inclined frame 11, making installation convenient. Multiple weight-reducing holes 14 are evenly provided along the axis of the crane wheel 13 body, which realizes reasonable weight reduction of the crane wheel 13 and is beneficial to the stability of the inclined frame 11. Example 3

[0020] Based on Embodiment 1 or Embodiment 2, in this embodiment, preferably, the inclined frame 11 is provided with a plurality of fixed crossbars 10 inside, and the inclined frame 11 is a telescopic structure.

[0021] When this utility model is in use, the inclined frame 11 is provided with multiple fixed crossbars 10 inside, which facilitates the support of the inclined frame 11 and makes the structure stable. The inclined frame 11 has a telescopic structure, which facilitates the adjustment of the height. Example 4

[0022] Based on Embodiment 1 or Embodiment 3, in this embodiment, preferably, the wire rope fixing device 7 is provided with a bearing 18 in the middle, the bearing 18 is fixedly connected to the chain 6, the body of the wire rope fixing device 7 can rotate 360 ​​degrees around the bearing 18, and the body of the wire rope fixing device 7 is provided with a wire rope fixing end 19.

[0023] When this utility model is used, the wire rope fixing device 7 is provided with a bearing 18 in the middle. The bearing 18 is fixedly connected to the chain 6. The body of the wire rope fixing device 7 can rotate 360 ​​degrees around the bearing 18, so that the wire rope fixing end 19 is always between the first chain wheel 5 and the second chain wheel 8 during the movement of the wire rope fixing device 7, thus ensuring the stability of the wire rope's up and down movement. Example 5

[0024] Based on Embodiment 1 or Embodiment 4, in this embodiment, preferably, the chain 6 includes a first connecting block 62 and a second connecting block 65, a chain bearing 64 is connected between the first connecting block 62 and the second connecting block 65, and a friction ring 61 is provided between the chain bearing 64 and the first connecting block 62 or the second connecting block 65.

[0025] In use of this utility model, preferably, the chain 6 includes a first connecting block 62 and a second connecting block 65, and a chain bearing 64 is connected between the first connecting block 62 and the second connecting block 65. A friction ring 61 is provided between the chain bearing 64 and the first connecting block 62 or the second connecting block 65. The friction ring is located between the chain bearing 64 and the first connecting block 62 or the second connecting block 65 to facilitate uniform force distribution on the chain. Example 6

[0026] Based on Embodiment 5, in this embodiment, preferably, the friction ring 61 has a plurality of evenly distributed rollers 63 inside. When this invention is used, the chain is connected using a friction ring with rollers, resulting in uniform force distribution and convenient maintenance.

[0027] Working principle: The motor 3 rotates, which drives the worm gear 4 to rotate, thereby driving the worm wheel 16 and the driven gear 15 to rotate. The driven gear 15 drives the first chain wheel 5 to rotate, which in turn drives the chain 6 and the second chain wheel 8 to rotate. During the movement of the chain 6, the wire rope fixing device 7 moves back and forth between the first chain wheel 5 and the second chain wheel 8, thereby enabling the wire rope fixing device 7 to drive the wire rope 9 to move up and down around the overhead wheel 13. The wire rope 9 drives the suspension device 17 to move up and down, thus realizing the oil pumping operation.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A beamless oil pumping unit, characterized in that: The device includes a base (1), a bottom support (2) on the upper part of the base (1), the front end of the bottom support (2) is inclined, a slanted frame (11) is provided at the front end of the bottom support (2), a crane wheel (13) is provided at the top of the slanted frame (11), a steel wire rope (9) is provided on the crane wheel (13), a motor (3) is provided on the upper part of the bottom support (2), a worm gear (4) is provided at the output end of the motor (3), and a second chain wheel (8) is provided sequentially from top to bottom in the middle of the slanted frame (11). A chain (6) is fitted between the first chain wheel (5), the second chain wheel (8), and the first chain wheel (5). A wire rope fastener (7) is provided on the chain (6). A suspension device (17) is provided at one end of the wire rope (9), and the other end passes through the jack wheel (13) and is fixedly connected to the wire rope fastener (7). A driven gear (15) is connected to the input end of the first chain wheel (5). A worm gear (16) is connected to the driven gear (15). The worm gear (16) meshes with the worm (4).

2. The beamless pumping unit according to claim 1, characterized in that: The crane wheel (13) is provided with a crane axle (12) in the middle. The crane axle (12) is rotatably connected to the top of the inclined frame (11). The crane wheel (13) is provided with a plurality of weight-reducing holes (14) evenly along the axis.

3. The beamless pumping unit according to claim 1, characterized in that: The inclined frame (11) is provided with multiple fixed crossbars (10) inside, and the inclined frame (11) is a telescopic structure.

4. The beamless pumping unit according to claim 1, characterized in that: The wire rope fastener (7) is provided with a bearing (18) in the middle. The bearing (18) is fixedly connected to the chain (6). The body of the wire rope fastener (7) can rotate 360 ​​degrees around the bearing (18). The body of the wire rope fastener (7) is provided with a wire rope fixing end (19).

5. The beamless pumping unit according to claim 1, characterized in that: The chain (6) includes a first connecting block (62) and a second connecting block (65), and a chain bearing (64) is connected between the first connecting block (62) and the second connecting block (65). A friction ring (61) is provided between the chain bearing (64) and the first connecting block (62) or the second connecting block (65).

6. The beamless pumping unit according to claim 5, characterized in that: The friction ring (61) has a plurality of uniformly distributed rollers (63) inside.

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