Automatic adjusting base for motor of beam-pumping unit

Abstract

The invention 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 comprises a fixed seat and a movable seat, the fixed seat comprises a fixed base and two outer fixed pipes fixed on the fixed base, 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] The invention belongs to a device for changing the tension of a motor belt, and in particular relates to an automatic adjustment base of a motor of a beam pumping unit. Background Art

[0002] The beam pumping unit accounts for more than 90% of the existing pumping wells. The motor and the gearbox wheel transmit the energy of the motor to the beam pumping unit through the combined belt, which drives the pumping unit to operate. During the operation of the pumping unit, it is necessary to frequently adjust the tightness of the combined belt. Otherwise, when the belt slips after being used for too long, it will not only cause the pumping unit to lose speed and affect the output, but also affect the service life of the belt. In severe cases, it will slip on the spot, causing the belt to break and a new belt must be replaced. At present, when adjusting the tightness of the pumping unit belt or replacing the belt, the pumping unit is usually required to stop working, and then adjust the position of the motor manually or automatically to adjust the tightness of the belt or replace the belt. In this process, not only the labor intensity of the operator is increased, but also the efficiency of adjusting or replacing the belt is reduced. The operation is relatively troublesome, which increases the production cost and affects the oil field production. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides an automatic adjustment base for a motor of a beam pumping unit.

[0004] The automatic adjustment base of the motor of the beam pumping unit of the present invention comprises a fixed base and a movable base: The fixing seat is composed of a fixing base and two external fixing tubes fixed on the fixing base at intervals, and a long strip through groove is opened in the upper middle section of the two external fixing tubes until the right end of the external fixing tube; 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 smaller than the length of the outer fixed tube, and the inner movable tube is placed inside the outer fixed tube and slidably connected thereto; A right end cap is provided at the right end of the outer fixed tube, and a left end cap is provided at the left end; an adjusting screw is provided in the inner movable tube, the right end of the adjusting screw passes through the right end cap and is placed outside the right end cap, and the left end abuts 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, an adjusting nut is threadedly connected to the threaded rod, and a spring is sleeved on the smooth rod, the right end of the spring abuts against the inner wall of the right end of the inner movable tube, and the left end abuts against the adjusting nut.

[0005] As a further improvement of the present invention, a connecting block with a strip protrusion 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, and a movable plate is fixed above the connecting block, so that the inner movable tube slides in the outer fixed tube.

[0006] As a further improvement of the present invention, 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.

[0007] As a further improvement of the present invention, two limit grooves are symmetrically provided on the inner wall of the left end of the inner movable tube, and two limit blocks are symmetrically provided on the outer wall of the adjusting nut. The two limit blocks are respectively placed in the two limit grooves and slidably connected thereto.

[0008] As a further improvement of the present invention, the inner movable tube is an outer circle and inner hexagonal tube, an outer circle and inner square tube, or an outer circle and inner spline tube, and the shapes of the adjusting nut and the baffle match it and are installed with clearance.

[0009] As a further improvement of the present invention, a limit plate is fixed on the outer wall of the right end of the adjusting screw, and the limit plate is placed outside the right end of the inner movable tube, and a hexagonal plug is provided at the right end of the adjusting screw.

[0010] As a further improvement of the present invention, the fixed base is composed of two parallel strip plates I and provided with threaded mounting holes.

[0011] As a further improvement of the present invention, the movable plate is composed of two parallel strip plates II, which are provided with long strip mounting holes.

[0012] The automatic adjustment base of the walking beam oil pump motor of the present invention adopts a double-layer tube structure. The position of the oil pump is dynamically adjusted by a spring installed in the inner tube. The tightness of the oil pump belt can be adjusted in time without stopping the oil pump, thereby increasing the service life of the belt, saving production costs, reducing the labor intensity of oil production workers, requiring no maintenance, and having a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is a structural disassembly diagram of the present invention; Figure 3 is a cross-sectional view of the adjusting nut of the present invention; Figure 4 It is a cross-sectional view of the inner movable tube of the present invention; Figure 5 It is a schematic diagram of the structure of the adjusting screw of the present invention. DETAILED DESCRIPTION

[0014] The automatic adjustment base of the motor of the beam pumping unit of the present invention comprises a fixed base and a movable base.

[0015] The fixing seat is composed of a fixing base 1 and two outer fixing tubes 2 fixed on the fixing base 1 at intervals. The fixing base 1 can be composed of a whole plate or two parallel strip plates I. Figure 1 , Figure 2 As shown, a threaded mounting hole 16 is provided on it, and the device is fixed to the base of the pumping unit through the threaded mounting hole 16. A long strip through groove 3 is opened in the upper middle section of the two external fixed pipes 2 until the right end of the external fixed pipe 2. The right end head of the external fixed pipe 2 is threadedly connected with a right end cover 6, and the left end head is internally threadedly connected with a left end cover 7. A pin hole I 20 is provided on the outer wall of the right end of the external fixed pipe 2, and a pin hole II 21 is provided on the outer wall of the right end cover 6. The cooperation of pin hole I20 and pin hole II21 with the fixing pin can fix and limit the right end cover 6 and the right end of the external fixed tube 2, which can prevent the right end cover 6 from rotating and falling off when the adjusting screw 8 is rotated. A pin hole III22 is provided on the outer wall of the left end of the external fixed tube 2, and a pin hole IV23 is provided on the outer wall of the left end cover 7. The left end cover 7 and the left end of the external fixed tube 2 can be fixed and limited by the cooperation of pin hole III22 and pin hole IV23 with the fixing pin, which can prevent the left end cover 7 from loosening and falling off.

[0016] 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 whole plate or two parallel strip plates II. Figure 1 , Figure 2 As shown, a long strip-shaped mounting hole 17 is provided on it, and the pumping unit motor can be fixed on the device through the setting of the mounting hole 17; 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, and a movable plate 4 is fixed above the connecting block. The inner movable tube 5 is placed in the outer fixed tube 2, and the connecting block is placed in the through groove 3 at this time, so that the inner movable tube 5 can slide in the outer fixed tube 2 along the through groove 3.

[0017] The left end of the inner movable tube 5 is open, and a baffle 15 is provided at the open position, and a through hole Ⅰ is provided at the center of the baffle 15, and the baffle 15 allows the adjusting screw 8 to pass freely; the right end of the inner movable tube 5 is blocked, but a through hole Ⅱ is provided at the center of the right end, so that when the adjusting screw 8 is set in the inner movable tube 5, the adjusting screw 8 can freely pass through the through holes Ⅰ and Ⅱ at both ends of the inner movable tube 5, and a limit plate 13 is fixed on the upper side of the adjusting screw 8 on the outer side of the right end of the inner movable tube 5, and a pin hole Ⅴ 24 is provided on the outer wall of the right end of the adjusting screw 8, A pin hole VI25 is provided on the outer wall of the limit plate 13. Through the cooperation of the pin hole V24 and the pin hole VI25 with the fixing pin, the limit plate 13 and the adjusting screw 8 can be firmly fixed. The limit plate 13 can limit 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, and the hexagonal plug 14 is placed on the outside of the right end cover 6. The design of the hexagonal plug 14 facilitates the rotation of the adjusting screw 8, and 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.

[0018] An adjusting screw 8 is arranged in 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 block 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 matched and fixed with the internal thread of the left end of the inner movable tube 5, and 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 slidably connected thereto, and the adjusting nut 9 can slide left and right in the inner movable tube 5 through the coordinated use of the limiting grooves 11 and the limiting blocks 12; For the convenience of processing, the above-mentioned inner movable tube 5 can be designed to be a special-shaped tube, such as an outer circle and inner hexagonal, an outer circle and inner square, or an outer circle and inner spline tube. At the same time, the adjusting nut 9 and the baffle 15 are designed to be matched with the above-mentioned special-shaped tube and installed with a gap, so that the adjusting nut 9 can move in the above-mentioned special-shaped tube, and the baffle 15 is fixed to the inner movable tube 5 by pins.

[0019] The present invention relates to an automatic adjustment base for a walking beam pumping unit motor. During initial installation, the adjusting screw 8 is rotated clockwise through the hexagonal plug 14. At this time, the adjusting nut 9 moves rightward in the inner movable tube 5 and compresses the spring 10 to tighten the pumping unit belt to keep it balanced. At this time, 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. When the motor continues to work, when the belt releases its elasticity and becomes longer, the pulling force of the belt on the motor is 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 on the adjusting nut 9, and the right end of the spring 10 is relatively fixed, the left end of the spring 10 is relatively fixed on the adjusting nut 9. The inner movable tube 5 is pressed against the inner movable tube 5, and because 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 is free to move on the adjusting screw 8, the inner movable tube 5 will move to the right under the elastic force of the spring 10, and drive the movable plate 4 fixed thereto and the motor thereon to move to the right. When the pulling force 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, thereby realizing automatic and timely adjustment of the tightness of the oil pump belt without stopping the oil pump.

Claims

1. The automatic adjustment base of the beam pumping unit motor includes a fixed base and a movable base, and is characterized by: The fixing seat is composed of a fixing base (1) and two external fixing tubes (2) fixed to the fixing base (1) at intervals, and a long strip-shaped through groove (3) is provided in the upper middle section of the two external fixing tubes (2) extending to the right end of the external fixing tube (2); 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 length of the inner movable tube (5) is shorter than the length of the outer fixed tube (2), and the inner movable tube (5) is placed inside the outer fixed tube (2) and is slidably connected thereto; A right end cap (6) is provided at the right end of the outer fixed tube (2), and a left end cap (7) is provided at the left end; an adjusting screw (8) is provided inside the inner movable tube (5), the right end of the adjusting screw (8) passes through the right end cap (6) and is placed outside the right end cap, and the left end abuts against the inner wall of the left end cap (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), 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).

2. The automatic adjustment base of the motor of the beam pumping unit according to claim 1 is characterized in that A connecting block with a strip protrusion is provided at the upper end of the outer wall of the inner movable tube (5), and the connecting block is placed in the through groove (3). A movable plate (4) is fixed above the connecting block, so that the inner movable tube (5) slides in the outer fixed tube (2).

3. The automatic adjustment base of the motor of the beam pumping unit according to claim 1 is characterized in that The left end of the inner movable tube (5) is provided with a baffle (15), and 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).

4. The automatic adjustment base of the motor of the beam pumping unit according to claim 3 is characterized in that 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 thereto.

5. The automatic adjustment base of the motor of the beam pumping unit according to claim 3 is characterized in that The inner movable tube (5) is a tube with an outer circle and an inner hexagon, an outer circle and an inner square, or an outer circle and an inner spline. The shapes of the adjusting nut (9) and the baffle (15) match the inner hexagon and the inner hexagon and the inner hexagon are installed with clearance.

6. The automatic adjustment base of the motor of the beam pumping unit according to claim 1 is characterized in that A limit plate (13) is fixed on the outer wall of the right end of the adjusting screw (8), and the limit plate (13) is placed outside the right end of the inner movable tube (5). A hexagonal plug (14) is provided at the right end of the adjusting screw (8).

7. The automatic adjustment base of the motor of the beam pumping unit according to claim 1 is characterized in that The fixed base (1) is composed of two parallel strip plates I and is provided with threaded mounting holes (16).

8. The automatic adjustment base of the motor of the beam pumping unit according to claim 1 is characterized in that The movable plate (4) is composed of two parallel strip plates II, on which are provided long strip mounting holes (17).

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