Automatic adjusting device for pumping unit belt

Abstract

The utility model relates to the technical field of petroleum machinery, in particular to an automatic adjusting device for a belt of an oil pumping unit. The device comprises a base, a motor fixing seat capable of moving in the left-right direction is installed on the base, a transmission box is further installed on the base, an adjusting rod capable of moving in the left-right direction is connected to the transmission box in a sliding mode, a pressure sensor making contact with the end of the adjusting rod is installed on the motor fixing seat, and external threads are formed in the adjusting rod. The transmission case is rotationally connected with a threaded sleeve matched with the external threads, the threaded sleeve is connected with a driven bevel gear, the transmission case is further rotationally connected with a driving bevel gear capable of being meshed with the driven bevel gear, and the driving bevel gear is connected with the output end of the adjusting motor. During use, the adjusting motor drives the driving bevel gear and the driven bevel gear to rotate, the threaded sleeve rotates and drives the adjusting rod to move, the pressure sensor is used for detecting the pressure of the adjusting rod on the motor fixing base, and adjustment is convenient.

Description

Technical Field

[0001] This utility model relates to the field of petroleum machinery technology, specifically to an automatic belt adjustment device for an oil pumping unit. Background Technology

[0002] Existing automatic belt adjustment devices for oil pumping units, such as Chinese patent CN203560372U, involve a belt adjustment device consisting of a base, guide rails, a motor mounting bracket, and a motor displacement adjuster. The guide rails are horizontally and vertically fixed to the base, and a movable sleeve covers the guide rails. The motor mounting bracket is fixed to the movable sleeve, and one end of the movable sleeve is connected to the motor displacement adjuster. The advantages of this oil pumping unit belt adjustment device are: adjusting the distance between the pulleys through forward and backward displacement; extending belt life by using a four-point aligned position; and requiring adjustment at only one point during belt installation.

[0003] The above technical solution has the following disadvantages: it cannot detect tension force and is inconvenient to adjust. Utility Model Content

[0004] The purpose of this invention is to provide an automatic belt adjustment device for oil pumping units that addresses the above problems. This device can detect the pressure of the adjusting rod on the motor mounting base, facilitating adjustment.

[0005] To achieve the above objectives, this utility model discloses an automatic belt adjustment device for an oil pumping unit. The device includes a base, on which a motor mounting seat capable of moving in the left and right direction is installed. A transmission box is also installed on the base, and an adjusting rod capable of moving in the left and right direction is slidably connected to the transmission box. A pressure sensor that contacts the end of the adjusting rod is installed on the motor mounting seat. The adjusting rod has an external thread. A threaded sleeve that mates with the external thread is rotatably connected to the transmission box. A driven bevel gear is connected to the threaded sleeve. An active bevel gear capable of meshing with the driven bevel gear is also rotatably connected to the transmission box. The active bevel gear is connected to the output end of the adjusting motor.

[0006] In use, the adjusting motor drives the active and passive bevel gears to rotate, the threaded sleeve rotates, and the adjusting rod moves. The pressure sensor is used to detect the pressure of the adjusting rod on the motor mounting base for easy adjustment.

[0007] Preferably, the adjusting rod has a polygonal anti-rotation section, and the transmission box has an anti-rotation hole that slides with the anti-rotation section.

[0008] When in use, the anti-rotation section cooperates with the anti-rotation hole to prevent the adjusting rod from rotating and ensure that the adjusting rod moves in the left and right directions.

[0009] Preferably, the cross-sectional shape of the anti-rotation section is square, pentagonal, or hexagonal. In use, the anti-rotation section cooperates with the anti-rotation hole to prevent the adjusting rod from rotating and ensure that the adjusting rod moves in the left and right directions.

[0010] Preferably, the transmission box also has a transmission box through hole through which the adjustment rod passes.

[0011] When in use, the through hole in the transmission box allows the adjusting rod to pass through easily.

[0012] Preferably, the base includes two crossbeams arranged in the left-right direction, and a right longitudinal beam and a left longitudinal beam arranged in the front-back direction are installed on the upper part of the crossbeams. Two guide rails arranged in the left-right direction are connected between the right longitudinal beam and the left longitudinal beam. The motor mounting base has guide holes that cooperate with the guide rails.

[0013] This structure is stable and facilitates the movement of the motor mounting bracket.

[0014] Preferably, a right limit switch that can contact the motor mounting base is installed on the right longitudinal beam, and a left limit switch that can contact the motor mounting base is installed on the left longitudinal beam.

[0015] When in use, the motor mounting base is considered to have reached the end of its travel when it contacts the right or left limit switch.

[0016] Preferably, the transmission box is mounted on the right longitudinal beam, and the right longitudinal beam has an adjustment rod through hole for the adjustment rod to pass through.

[0017] This structure facilitates the installation of the transmission box and the regulating motor.

[0018] Preferably, the left longitudinal beam is threaded with a positioning screw that abuts against the motor mounting base.

[0019] When in use, the motor stops moving when the motor mounting base contacts the positioning screw, thus improving safety.

[0020] Preferably, a proximity switch is installed on the base.

[0021] When in use, the proximity switch is used to detect the motor mounting bracket, making it convenient to use.

[0022] In summary, the beneficial effects of this utility model are as follows: during use, the adjusting motor 13 drives the active bevel gear 21 and the passive bevel gear 22 to rotate, the threaded sleeve 23 rotates, and drives the adjusting rod 15 to move. The pressure sensor 10 is used to detect the pressure of the adjusting rod 15 on the motor mounting base 8, which facilitates adjustment. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the front part of an automatic belt adjustment device for an oil pumping unit according to this utility model;

[0024] Figure 2 This is a three-dimensional structural diagram of the rear part of an automatic belt adjustment device for an oil pumping unit according to this utility model.

[0025] Figure 3 This is a top view schematic diagram of an automatic belt adjustment device for an oil pumping unit according to the present invention;

[0026] Figure 4 yes Figure 3 A schematic diagram of the structure of part A in the middle;

[0027] Figure 5 This is a schematic diagram of the motor mounting base structure in an automatic belt adjustment device for an oil pumping unit according to this utility model.

[0028] In the diagram: 1. Crossbeam; 2. Right longitudinal beam; 3. Left longitudinal beam; 4. Control panel; 5. Right limit switch; 6. Left limit switch; 7. Guide rail; 8. Motor mounting base; 9. Motor mounting slot; 10. Pressure sensor; 11. Positioning screw; 12. Proximity switch; 13. Adjusting motor; 14. Transmission box; 15. Adjusting rod; 16. Adjusting rod through hole; 17. External thread; 18. Anti-rotation section; 19. Anti-rotation hole; 20. Transmission box through hole; 21. Driving bevel gear; 22. Driven bevel gear; 23. Threaded sleeve; 24. Guide hole. Detailed Implementation

[0029] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0030] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0031] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0034] like Figures 1 to 5 As shown, an automatic belt adjustment device for an oil pumping unit includes a base, specifically, a control panel 4 is mounted on the base, and a motor mounting base 8 capable of moving in the left-right direction is mounted on the base. Specifically, the motor mounting base 8 has a motor mounting groove 9. A transmission box 14 is also mounted on the base, and an adjusting rod 15 capable of moving in the left-right direction is slidably connected to the transmission box 14. A pressure sensor 10, which contacts the end of the adjusting rod 15, is mounted on the motor mounting base 8. The adjusting rod 15 has an external thread 17. A threaded sleeve 23, which mates with the external thread 17, is rotatably connected to the transmission box 14. A driven bevel gear 22 is connected to the threaded sleeve 23. An active bevel gear 21, capable of meshing with the driven bevel gear 22, is also rotatably connected to the transmission box 14. The active bevel gear 21 is connected to the output end of the adjusting motor 13. In use, the adjusting motor 13 drives the active bevel gear 21 and the driven bevel gear 22 to rotate, the threaded sleeve 23 rotates, and the adjusting rod 15 moves. The pressure sensor 10 is used to detect the pressure of the adjusting rod 15 on the motor mounting base 8 for easy adjustment.

[0035] Specifically, the adjusting rod 15 has a polygonal anti-rotation section 18, and the transmission box 14 has an anti-rotation hole 19 that slides with the anti-rotation section 18. In use, the anti-rotation section 18 engages with the anti-rotation hole 19 to prevent the adjusting rod 15 from rotating, ensuring that the adjusting rod 15 moves in the left-right direction. The cross-sectional shape of the anti-rotation section 18 can be square, pentagonal, or hexagonal. In use, the anti-rotation section 18 engages with the anti-rotation hole 19 to prevent the adjusting rod 15 from rotating, ensuring that the adjusting rod 15 moves in the left-right direction. The transmission box 14 also has a transmission box through hole 20 for the adjusting rod 15 to pass through. In use, the transmission box through hole 20 facilitates the passage of the adjusting rod 15.

[0036] Specifically, the base includes two horizontal beams 1 arranged in the left-right direction. A right longitudinal beam 2 and a left longitudinal beam 3 arranged in the front-back direction are mounted on the upper part of the horizontal beams 1. Two guide rails 7 arranged in the left-right direction connect the right longitudinal beam 2 and the left longitudinal beam 3. The motor mounting base 8 has guide holes 24 that mate with the guide rails 7. This structure is stable and facilitates the movement of the motor mounting base 8. A right limit switch 5 that can contact the motor mounting base 8 is mounted on the right longitudinal beam 2, and a left limit switch 6 that can contact the motor mounting base 8 is mounted on the left longitudinal beam 3. In use, when the motor mounting base 8 contacts the right limit switch 5 or the left limit switch 6, it is considered that the motor mounting base 8 has reached the end of its stroke. The transmission box 14 is mounted on the right longitudinal beam 2, and the right longitudinal beam 2 has an adjustment rod through hole 16 for the adjustment rod 15 to pass through. This structure facilitates the installation of the transmission box 14 and the adjusting motor 13.

[0037] Specifically, the left longitudinal beam 3 is threaded with a positioning screw 11 that abuts against the motor mounting base 8. There are two positioning screws 11; rotating the positioning screw 11 adjusts its extension length. During use, the motor mounting base 8 stops moving when it contacts the positioning screw 11, improving safety. A proximity switch 12 is installed on the base. During use, the proximity switch 12 is used to detect the motor mounting base 8 for ease of use.

[0038] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. An automatic belt adjustment device for an oil pumping unit, comprising a base, on which a motor mounting bracket (8) capable of moving in the left-right direction is installed, characterized in that, A transmission box (14) is also installed on the base. An adjusting rod (15) that can move in the left and right direction is slidably connected to the transmission box (14). A pressure sensor (10) that contacts the end of the adjusting rod (15) is installed on the motor mounting base (8). An external thread (17) is provided on the adjusting rod (15). A threaded sleeve (23) that cooperates with the external thread (17) is rotatably connected to the transmission box (14). A passive bevel gear (22) is connected to the threaded sleeve (23). An active bevel gear (21) that can mesh with the passive bevel gear (22) is also rotatably connected to the transmission box (14). The active bevel gear (21) is connected to the output end of the adjusting motor (13).

2. The automatic belt adjustment device for oil pumping units as described in claim 1, characterized in that, The adjusting rod (15) has a polygonal anti-rotation section (18) and the transmission box (14) has an anti-rotation hole (19) that slides with the anti-rotation section (18).

3. The automatic belt adjustment device for an oil pumping unit as described in claim 1, characterized in that, The cross-sectional shape of the anti-rotation segment (18) is square, pentagonal or hexagonal.

4. The automatic belt adjustment device for an oil pumping unit as described in claim 1, characterized in that, The transmission box (14) is also provided with a transmission box through hole (20) through which the adjustment rod (15) passes.

5. The automatic belt adjustment device for an oil pumping unit as described in any one of claims 1 to 4, characterized in that, The base includes two horizontal beams (1) arranged in the left-right direction. A right longitudinal beam (2) and a left longitudinal beam (3) arranged in the front-back direction are installed on the upper part of the horizontal beams (1). Two guide rails (7) arranged in the left-right direction are connected between the right longitudinal beam (2) and the left longitudinal beam (3). The motor mounting base (8) has guide holes (24) that cooperate with the guide rails (7).

6. The automatic belt adjustment device for an oil pumping unit as described in claim 5, characterized in that, A right limit switch (5) that can contact the motor mounting base (8) is installed on the right longitudinal beam (2), and a left limit switch (6) that can contact the motor mounting base (8) is installed on the left longitudinal beam (3).

7. The automatic belt adjustment device for an oil pumping unit as described in claim 5, characterized in that, The transmission box (14) is installed on the right longitudinal beam (2), and the right longitudinal beam (2) has an adjustment rod through hole (16) for the adjustment rod (15) to pass through.

8. The automatic belt adjustment device for an oil pumping unit as described in claim 7, characterized in that, The left longitudinal beam (3) is threaded with a positioning screw (11) that can abut against the motor mounting base (8).

9. The automatic belt adjustment device for a pumping unit as described in any one of claims 1 to 4, characterized in that, A proximity switch (12) is installed on the base.

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