Automatic adjusting base for motor of beam-pumping unit

Abstract

The utility model relates to an automatic adjusting base for a motor of a beam-pumping unit, which belongs to a device for changing the tension of a motor belt and consists of a fixed seat and a movable seat, the fixed seat consists of a fixed base and two outer fixed pipes fixed on the fixed base, and the movable seat consists of a movable seat and a movable seat. Long-strip-shaped through grooves are formed in the middle sections of the upper portions of the two outer fixing pipes and extend to the right ends of the outer fixing pipes; the movable seat is composed of two inner movable pipes and a movable plate fixed above the inner movable pipes, and the inner movable pipes are arranged in the outer fixed pipes; an adjusting screw rod is arranged in the inner movable pipe, the left end of the adjusting screw rod is a threaded rod, the right end of the adjusting screw rod is a polished rod, the threaded rod is in threaded connection with an adjusting nut, the polished rod is sleeved with a spring, the right end of the spring abuts against the inner movable pipe, and the left end of the spring abuts against the adjusting nut. A double-layer tubular structure is adopted, the position of the oil pumping unit is dynamically adjusted through the spring arranged in the inner-layer tube, and the tightness of a belt of the oil pumping unit can be timely adjusted under the condition that the oil pumping unit does not stop working.

Description

Technical Field

[0001] This utility model relates to a device for changing the tension of a motor belt, specifically an automatic adjustment base for a walking beam pumping unit motor. Background Technology

[0002] Walking beam pumping units account for over 90% of existing oil wells. The motor and gearbox pulley are connected by a connecting belt, which transmits energy from the motor to the walking beam pumping unit, thus driving its operation. During operation, the tension of the connecting belt needs frequent adjustment. Otherwise, if the belt slips after prolonged use, it will not only cause the pumping unit to lose speed, affecting production, but also shorten the belt's lifespan. In severe cases, it may even slip in place, leading to belt breakage and requiring replacement. Currently, adjusting or replacing the pumping unit's belt tension usually requires stopping the pumping unit and then manually or automatically adjusting the motor position to adjust or replace the belt. This process increases the workload of operators, reduces the efficiency of belt adjustment or replacement, is relatively cumbersome, increases production costs, and negatively impacts oilfield production. Summary of the Invention

[0003] To address the shortcomings of the prior art, this utility model provides an automatic adjustment base for the motor of a beam pumping unit.

[0004] The automatic adjustment base for the motor of the beam pumping unit of this utility model includes a fixed base and a movable base:

[0005] The fixing base consists of a fixed base and two external fixing tubes fixed at intervals on the fixed base. A long strip-shaped through groove is opened in the middle of the upper part of the two external fixing tubes, extending to the right end of the external fixing tubes.

[0006] The movable seat is composed of two inner movable tubes and a movable plate fixed above the two inner movable tubes; the length of the inner movable tube is less than the length of the outer fixed tube, and the inner movable tube is placed inside the outer fixed tube and slidably connected to it;

[0007] The outer fixed tube has a right end cap at its right end and a left end cap at its left end; an adjusting screw is provided inside the inner movable tube, with the right end of the adjusting screw passing through the right end cap and resting outside it, and the left end abutting against the inner wall of the left end cap; the left end of the adjusting screw is a threaded rod and the right end is a smooth rod, with an adjusting nut threaded onto the threaded rod and a spring sleeved on the smooth rod, the right end of the spring abutting against the inner wall of the right end of the inner movable tube, and the left end abutting against the adjusting nut.

[0008] As a further improvement of this utility model, a strip-shaped protruding connecting block is provided at the upper end of the outer wall of the inner movable tube, and the connecting block is placed in the through groove. A movable plate is fixed above the connecting block, so that the inner movable tube slides in the outer fixed tube.

[0009] As a further improvement of this utility model, a baffle is provided at the left end port of the inner movable tube, and the left end of the adjusting screw passes through the baffle and abuts against the inner wall of the left end cover.

[0010] As a further improvement of this utility model, two limiting grooves are symmetrically provided on the inner wall of the left end of the inner movable tube, and two limiting blocks are symmetrically provided on the outer wall of the adjusting nut. The two limiting blocks are respectively placed in the two limiting grooves and slidably connected to them.

[0011] As a further improvement of this utility model, the inner movable tube is an outer circle with an inner hexagon, an outer circle with an inner square, or an outer circle with an inner spline tube, and the shape of the adjusting nut and the baffle is matched with it and installed with gaps.

[0012] As a further improvement of this utility model, a limiting plate is fixed on the outer wall of the right end of the adjusting screw, and the limiting plate is placed outside the right end of the inner movable tube. A hexagonal plug is provided at the right end of the adjusting screw.

[0013] As a further improvement of this utility model, the fixed base is composed of two parallel strip plates I, and threaded mounting holes are provided on them.

[0014] As a further improvement of this utility model, the movable plate is composed of two parallel strip plates II, which are provided with elongated mounting holes.

[0015] This utility model relates to an automatic adjustment base for the motor of a beam pumping unit. It adopts a double-layer tubular structure and dynamically adjusts the position of the pumping unit through a spring installed in the inner tube. It can adjust the tension of the pumping unit belt in a timely manner without stopping the pumping unit, thereby improving the service life of the belt, saving production costs, reducing the labor intensity of oilfield workers, requiring no maintenance, and having a wide range of applications. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a structural disassembly diagram of the present invention;

[0018] Figure 3 This is a cross-sectional view of the adjusting nut of this utility model;

[0019] Figure 4 This is a cross-sectional view of the inner movable tube of this utility model;

[0020] Figure 5 This is a schematic diagram of the adjusting screw structure of this utility model. Detailed Implementation

[0021] The present invention relates to an automatic adjustment base for a beam pumping unit motor, comprising a fixed base and a movable base.

[0022] The fixing base consists of a fixed base 1 and two external fixing tubes 2 fixed at intervals on the fixed base 1. The fixed base 1 can be made of a single piece of plate or two parallel strip plates 1, such as... Figure 1 , Figure 2 As shown, a threaded mounting hole 16 is provided on it, through which the device is fixed to the pumping unit base. A long, narrow through-slot 3 is formed in the middle of the upper part of the two external fixing tubes 2, extending to the right end of the external fixing tube 2. A right end cap 6 is threaded to the right end of the external fixing tube 2, and a left end cap 7 is internally threaded to the left end. A pin hole I 20 is provided on the outer wall of the right end of the external fixing tube 2, and a pin hole II 21 is provided on the outer wall of the right end cap 6. The engagement of pin holes I 20 and II 21 with the fixing pin can fix and limit the right end cover 6 to the right end of the outer fixing tube 2, preventing the right end cover 6 from rotating and falling off when the adjusting screw 8 is rotated. Pin hole III 22 is provided on the outer wall of the left end of the outer fixing tube 2, and pin hole IV 23 is provided on the outer wall of the left end cover 7. The engagement of pin holes III 22 and IV 23 with the fixing pin can fix and limit the left end cover 7 to the left end of the outer fixing tube 2, preventing the left end cover 7 from loosening and falling off.

[0023] The movable seat is composed of two inner movable tubes 5 and a movable plate 4 fixed above the two inner movable tubes 5. The movable plate 4 can be composed of a single piece of plate or two parallel strip plates 2, such as... Figure 1 , Figure 2 As shown, it has an elongated mounting hole 17, through which the pumping unit motor can be fixed on the device; the length of the inner movable tube 5 is less than the length of the outer fixed tube 2, and a strip-shaped protruding connecting block is provided at the upper end of the outer wall of the inner movable tube 5. A movable plate 4 is fixed above the connecting block. When the inner movable tube 5 is placed inside the outer fixed tube 2, the connecting block is placed inside the through groove 3, so that the inner movable tube 5 can slide along the direction of the through groove 3 inside the outer fixed tube 2.

[0024] The left end of the inner movable tube 5 is open, and a baffle 15 is provided at the open end. A through hole I is opened in the center of the baffle 15, allowing the adjusting screw 8 to pass freely through the baffle 15. The right end of the inner movable tube 5 is sealed, but a through hole II is provided at the center of the sealed right end. Thus, when the adjusting screw 8 is installed inside the inner movable tube 5, the adjusting screw 8 can pass freely through the through holes I and II at both ends of the inner movable tube 5. A limit plate 13 is fixed on the adjusting screw 8 on the outer side of the right end of the inner movable tube 5. A pin hole V24 is provided on the outer wall of the right end of the adjusting screw 8. The outer wall of the limiting plate 13 is provided with a pin hole VI25. Through the cooperation of the pin hole V24 and the pin hole VI25 with the fixing pin, the limiting plate 13 and the adjusting screw 8 can be firmly fixed. The limiting plate 13 can restrict the axial movement of the adjusting screw 8 and prevent it from falling off. The right end of the adjusting screw 8 passes through the right end cover 6 and is placed outside it, and a hexagonal plug 14 is fixed at its end. The hexagonal plug 14 is placed outside the right end cover 6. The design of the hexagonal plug 14 makes it convenient to rotate the adjusting screw 8. The left end of the adjusting screw 8 passes through the baffle 15 and abuts against the inner wall of the left end cover 7.

[0025] An adjusting screw 8 is installed inside the inner movable tube 5. The left end of the adjusting screw 8 is a threaded rod 18, and the right end is a smooth rod 19. An adjusting nut 9 is threadedly connected to the threaded rod 18, and a spring 10 is sleeved on the smooth rod 19. The right end of the spring 10 abuts against the inner wall of the right end of the inner movable tube 5, and the left end abuts against the adjusting nut 9. When the inner cavity of the inner movable tube 5 is a circular tube, the outer circumference of the baffle 15 is provided with an external thread, which is fixed in conjunction with the internal thread of the left end of the inner movable tube 5. Two limiting grooves 11 are symmetrically provided on the inner wall of the left end of the inner movable tube 5, and two limiting blocks 12 are symmetrically provided on the outer wall of the adjusting nut 9. The two limiting blocks 12 are respectively placed in the two limiting grooves 11 and are slidably connected to them. Through the cooperation of the limiting grooves 11 and the limiting blocks 12, the adjusting nut 9 can slide left and right inside the inner movable tube 5.

[0026] For ease of processing, the inner movable tube 5 can be designed as a special-shaped tube, such as an outer circle with an inner hexagon, an outer circle with an inner square, or an outer circle with an inner spline. At the same time, the adjusting nut 9 and the baffle 15 can be designed to match the shape of the special-shaped tube and installed with gaps, so that the adjusting nut 9 can move inside the special-shaped tube, while the baffle 15 is fixed to the inner movable tube 5 by a pin.

[0027] This utility model discloses an automatic adjustment base for a beam pumping unit motor. During initial installation, rotating the adjusting screw 8 clockwise via the hexagonal plug 14 causes the adjusting nut 9 to move to the right within the inner movable tube 5, compressing the spring 10 and tightening the pumping unit belt to maintain balance. At this point, there is a certain distance between the right end of the inner movable tube 5 and the right end of the outer fixed tube 2. However, during continuous motor operation, when the belt releases its elasticity and lengthens, the tension of the belt on the motor becomes less than the elastic force of the spring 10. The spring 10 releases its elastic force. Since the left end of the spring 10 is relatively fixed against the adjusting nut 9, while the right end of the spring 10... The inner movable tube 5 is positioned on the top of the inner movable tube 5. Since there is a gap between the right end of the inner movable tube 5 and the right end of the outer fixed tube 2, and the inner movable tube 5 moves freely under the adjustment screw 8, the inner movable tube 5 will move to the right under the elastic force of the spring 10. This will drive the movable plate 4, which is fixed to it, and the motor on it to move to the right. When the tension of the belt on the motor and the force of the spring 10 reach a balance again, the inner movable tube 5 will stop moving, and the position of the motor will be adjusted to a suitable position. This allows for the automatic adjustment of the tension of the pumping unit belt in a timely manner without stopping the pumping unit from working.

Claims

1. A beam pumping unit motor automatic adjustment base, comprising a fixed seat and a movable seat, characterized in that: the fixed seat is composed of a fixed base (1) and two outer fixed pipes (2) fixed on the fixed base (1), a long slot (3) is formed in the upper middle segment of the two outer fixed pipes (2) until the right end of the outer fixed pipe (2); the movable seat is composed of two inner movable pipes (5) and a movable plate (4) fixed above the two inner movable pipes (5); the length of the inner movable pipe (5) is less than that of the outer fixed pipe (2), and the inner movable pipe (5) is slidably connected in the outer fixed pipe (2); a right end cover (6) is arranged at the right end of the outer fixed pipe (2), a left end cover (7) is arranged at the left end, an adjusting screw (8) is arranged in the inner movable pipe (5), the right end of the adjusting screw (8) penetrates the right end cover (6) and is arranged outside, and the left end abuts against the inner wall of the left end cover (7); the left end of the adjusting screw (8) is a threaded rod (18), and the right end is a smooth rod (19); an adjusting nut (9) is threadedly connected to the threaded rod (18), a spring (10) is arranged on the smooth rod (19), the right end of the spring (10) abuts against the right end inner wall of the inner movable pipe (5), and the left end abuts against the adjusting nut (9). A strip-shaped protruding connecting block is arranged on the outer wall of the inner movable pipe (5) and is arranged in the slot (3), and the movable plate (4) is fixed above the connecting block, so that the inner movable pipe (5) slides in the outer fixed pipe (2). A baffle (15) is arranged at the left end of the inner movable pipe (5), and the left end of the adjusting screw (8) penetrates the baffle (15) and abuts against the inner wall of the left end cover (7). Two limiting grooves (11) are symmetrically arranged on the left end inner wall of the inner movable pipe (5), and two limiting blocks (12) are symmetrically arranged on the outer wall of the adjusting nut (9), the two limiting blocks (12) are respectively arranged in the two limiting grooves (11) and are slidably connected therewith.

2. The automatically adjusted base for the electric motor of a beam pumping unit according to claim 1, characterized in that The inner movable pipe (5) is an outer circle inner hexagonal pipe, an outer circle inner square pipe, or an outer circle inner spline pipe, the shapes of the adjusting nut (9) and the baffle (15) are matched with the shapes of the inner movable pipe (5) and are installed with a gap.

3. The automatically adjusted base for the electric motor of the beam pumping unit according to claim 1, characterized in that A limiting plate (13) is fixed on the right end outer wall of the adjusting screw (8) and is arranged outside the right end of the inner movable pipe (5), and a hexagonal plug (14) is arranged at the right end of the adjusting screw (8).

4. The automatically regulated base of the electric motor of the beam pumping unit according to claim 3, characterized in that The fixed base (1) is composed of two parallel strip-shaped plates I, and threaded mounting holes (16) are arranged on the fixed base (1).

5. The automatic adjustment base for the electric motor of a beam pumping unit according to claim 3, characterised in that The movable plate (4) is composed of two parallel strip-shaped plates II, and long strip-shaped mounting holes (17) are arranged on the movable plate (4).

6. The automatically adjusted base for the electric motor of the beam pumping unit according to claim 1, characterized in that ​ 7. The automatic adjustment base for the electric motor of a beam pumping unit according to claim 1, characterised in that ​ 8. The automatic adjustment base for the electric motor of a beam pumping unit according to claim 1, characterized in that ​

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