Pumping unit parking device

Abstract

The utility model relates to the technical field of parking devices, in particular to a parking device of an oil pumping unit, which is used for braking, improving the working efficiency and enhancing the practicability. Comprising an oil pumping unit body, a brake wheel is arranged on the oil pumping unit body, a parking mechanism comprises an electric push rod, the electric push rod is fixedly installed on the oil pumping unit body, a top plate is fixedly installed at the output end of the electric push rod, two connecting cylinders are hinged to the top plate, two brake shoes are hinged to the oil pumping unit body, and connecting columns are hinged to the two brake shoes. The two connecting columns are slidably connected with the two connecting cylinders correspondingly, limiting grooves are formed in the two connecting cylinders correspondingly, limiting blocks are fixedly installed on the two connecting columns correspondingly, the two limiting blocks slidably penetrate through the two limiting grooves correspondingly, the two connecting columns are sleeved with springs correspondingly, and a power source and a controller are arranged on the pumping unit body. The electric push rod, the power source and the controller are electrically connected, and the locking mechanism is installed on the top plate and used for locking the brake wheel after parking.

Description

Technical Field

[0001] This utility model relates to the field of parking device technology, and in particular to a parking device for an oil pumping unit. Background Technology

[0002] Brakes for beam pumping units mainly fall into two categories: external clamping and internal tensioning. Both utilize friction pairs to park the pumping unit. As the service life increases, normal wear of the brake friction pairs and brake wheels, as well as deformation of the brake linkage mechanism, reduce the braking torque. After shutdown, operators rely solely on conventional braking devices during pumping unit operations. However, pumping unit vibrations caused by changes in well load, well workover operations, pumping unit maintenance, and crank pin assembly replacement can easily lead to slippage of the brake friction pairs, causing unexpected movement of the pumping unit. Therefore, for safety reasons, oilfield units have successively developed auxiliary braking devices.

[0003] For example, Chinese utility model patent CN214945914U discloses a special-shaped tooth safety parking device for a beam pumping unit, which includes a braking mechanism, a transmission mechanism, and a driving mechanism; the braking mechanism includes a brake disc and a brake arm; the outer edge of the brake disc is uniformly fixed with disc brake teeth; the disc brake teeth are special-shaped teeth, which include a tooth body, the side of the tooth body includes a tooth tip edge, a tooth middle edge, and a tooth bottom edge, the top of the tooth tip edge intersects to form an acute angle tooth tip, the tooth middle edge is inclined inward, and both the tooth tip edge and the tooth bottom edge form an obtuse angle with the tooth middle edge; the lower part of the brake arm is equipped with a brake tooth block, the brake tooth block includes a brake base plate and an arm brake tooth, the arm brake tooth is a special-shaped tooth that matches the disc brake tooth.

[0004] The aforementioned prior art achieves self-locking of the mechanism by designing the brake teeth as irregular teeth. However, when the device is working, it needs to rotate the rocker arm and drive the lead screw to drive the horizontal tie rod, which consumes a lot of time, reduces work efficiency, and thus results in poor practicality. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To solve the above-mentioned technical problems, this utility model provides a parking device for oil pumping units that facilitates braking, improves working efficiency, and enhances practicality.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this application provides the following technical solution: a pumping unit parking device, comprising a pumping unit body, a brake wheel mounted on the pumping unit body, a parking mechanism comprising an electric actuator fixedly mounted on the pumping unit body, a top plate fixedly mounted on the output end of the electric actuator, two connecting cylinders hinged to the top plate, two brake shoes hinged to the pumping unit body, each brake shoe hinged with a connecting post, the two connecting posts slidably connected to the two connecting cylinders, each connecting cylinder having a limit groove, each connecting post having a limit block fixedly mounted on the two connecting posts, the two limit blocks slidingly passing through the two limit grooves, each connecting post having a spring fitted on the two connecting posts, a power supply and a controller mounted on the pumping unit body, the electric actuator, the power supply and the controller being electrically connected, and a locking mechanism mounted on the top plate for locking the brake wheel after parking.

[0009] By adopting the above technical solution, when parking is required, the controller controls the electric push rod to work. The electric push rod pushes the top plate to rise. The top plate, through the connecting column and connecting cylinder, pushes the two brake shoes to rotate inward until both brake shoes are in contact with the brake wheel, causing the brake wheel to decelerate. The top plate continues to rise, and the connecting column slides in the connecting cylinder under the limiting action of the limiting block. At this time, the spring is compressed, and the locking mechanism on the top plate can lock the brake wheel a second time to prevent it from rotating. This process realizes the braking process, improves working efficiency, and thus enhances practicality.

[0010] Preferably, the locking mechanism includes an L-shaped rod, which is fixedly installed on the top plate, and a locking wheel is fixedly installed on the brake wheel, with multiple locking grooves provided on the locking wheel.

[0011] By adopting the above technical solution, after the two brake shoes fix the brake wheel, the top plate drives the L-shaped rod to continue to rise until the top of the L-shaped rod is inserted into the locking groove of the locking wheel, thereby locking the brake wheel a second time and improving safety.

[0012] Preferably, a reinforcing rod is fixedly installed on the L-shaped rod, and the reinforcing rod is fixedly connected to the top plate.

[0013] By adopting the above technical solution, the reinforcing rod can strengthen the connection between the L-shaped rod and the top plate, thereby improving stability.

[0014] Preferably, friction pads are provided at the inner ends of both brake shoes.

[0015] By adopting the above technical solution, the friction pad can slow down the speed of the brake wheel, thereby improving its practicality.

[0016] Preferably, the pumping unit body is equipped with a protective box, and the electric actuator, power supply and controller are all located inside the protective box, which is hinged with a door.

[0017] By adopting the above technical solution, the protective box can protect electrical equipment. It can be used simply by opening the box door, thereby improving safety.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, this application provides a parking device for an oil pumping unit, which has the following advantages:

[0020] When parking is required, the controller operates the electric actuator, which pushes the top plate upward. The top plate, through the connecting column and connecting cylinder, pushes the two brake shoes to rotate inward until both brake shoes are in contact with the brake wheel, causing the brake wheel to decelerate. The top plate continues to rise, and the connecting column slides inside the connecting cylinder under the limiting action of the limit block. At this time, the spring is compressed, and the locking mechanism on the top plate can lock the brake wheel a second time to prevent it from rotating. This process realizes the braking process, improves working efficiency, and thus enhances practicality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the axial side structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0023] Figure 3 This is the utility model Figure 1 A magnified structural diagram of A in the middle;

[0024] Figure 4 This is the utility model Figure 1 A magnified structural diagram of B in the diagram.

[0025] The following are labeled in the attached diagram: 1. Pumping unit body; 2. Brake wheel; 3. Electric actuator; 4. Top plate; 5. Connecting cylinder; 6. Brake shoe; 7. Connecting column; 8. Limiting block; 9. Spring; 10. Power supply; 11. Controller; 12. L-shaped rod; 13. Locking wheel; 14. Reinforcing rod; 15. Friction pad; 16. Protective box; 17. Box door. Detailed Implementation

[0026] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0027] It should be noted that terms such as "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 specified with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation" and "connection" 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; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] Example 1

[0030] Please see Figures 1-4A parking device for an oil pumping unit includes an oil pumping unit body 1, a brake wheel 2 mounted on the oil pumping unit body 1, and a parking mechanism including an electric actuator 3 fixedly mounted on the oil pumping unit body 1. A top plate 4 is fixedly mounted on the output end of the electric actuator 3. Two connecting cylinders 5 are hinged to the top plate 4. Two brake shoes 6 are hinged to the oil pumping unit body 1. Each brake shoe 6 has a friction pad 15 at its inner end, which slows down the brake wheel 2. Each brake shoe 6 has a connecting post 7 hinged to it, and the two connecting posts 7 are slidably connected to the two connecting cylinders 5 respectively. Each connecting cylinder 5 has a limit groove, and each of the two connecting columns 7 has a limit block 8 fixedly installed. The two limit blocks 8 slide through the two limit grooves respectively. Each of the two connecting columns 7 is fitted with a spring 9. The pumping unit body 1 is equipped with a power supply 10 and a controller 11. The electric push rod 3, the power supply 10, and the controller 11 are electrically connected. The pumping unit body 1 is equipped with a protective box 16. The electric push rod 3, the power supply 10, and the controller 11 are all located inside the protective box 16. The protective box 16 is hinged with a door 17. The protective box 16 can protect the electrical equipment and can be opened when in use. The door 17 is provided. A locking mechanism is installed on the top plate 4 to lock the brake wheel 2 after parking. The locking mechanism includes an L-shaped rod 12, which is fixedly installed on the top plate 4. A locking wheel 13 is fixedly installed on the brake wheel 2, and the locking wheel 13 has multiple locking grooves. A reinforcing rod 14 is fixedly installed on the L-shaped rod 12 and is fixedly connected to the top plate 4. The reinforcing rod 14 can strengthen the connection between the L-shaped rod 12 and the top plate 4. When parking is required, the electric push rod 3 is controlled by the controller 11 to push the top plate 4 up. The top plate 4 is connected to the electric push rod 3 to lift the brake wheel 2. The connecting column 7 and the connecting cylinder 5 push the two brake shoes 6 to rotate inward until both brake shoes 6 are in contact with the brake wheel 2, causing the brake wheel 2 to decelerate. The top plate 4 continues to rise, and the connecting column 7 slides inside the connecting cylinder 5 under the limiting action of the limiting block 8. At this time, the spring 9 is compressed. After the two brake shoes 6 fix the brake wheel 2, the top plate 4 drives the L-shaped rod 12 to continue to rise until the top of the L-shaped rod 12 is inserted into the locking groove of the locking wheel 13, which locks the brake wheel 2 a second time to prevent it from rotating. This process realizes the braking process, improves working efficiency, and thus enhances practicality.

[0031] Example 2

[0032] Please see Figures 1-4A parking device for an oil pumping unit includes an oil pumping unit body 1, a brake wheel 2 mounted on the oil pumping unit body 1, and a parking mechanism including an electric actuator 3 fixedly mounted on the oil pumping unit body 1. A top plate 4 is fixedly mounted on the output end of the electric actuator 3. Two connecting cylinders 5 are hinged to the top plate 4. Two brake shoes 6 are hinged to the oil pumping unit body 1, and each brake shoe 6 is hinged with a connecting post 7. The two connecting posts 7 are slidably connected to the two connecting cylinders 5, and each connecting cylinder 5 has a limit groove. Limit blocks 8 are fixedly mounted on each of the two connecting posts 7, and the two limit blocks 8 slide through the two limit grooves. Springs 9 are fitted onto each of the two connecting posts 7. A power supply 10 and a controller 11 are provided on the oil pumping unit body 1. The electric actuator 3, power supply 10, and controller 11 are electrically connected. The locking mechanism is installed on the top plate 4 and is used to lock the brake wheel 2 after parking. When parking is required, the controller 11 controls the electric actuator 3 to work. The electric actuator 3 pushes the top plate 4 to rise. The top plate 4 pushes the two brake shoes 6 to rotate inward through the connecting column 7 and the connecting cylinder 5 until the two brake shoes 6 are in contact with the brake wheel 2, causing the brake wheel 2 to decelerate. The top plate 4 continues to rise. The connecting column 7 slides in the connecting cylinder 5 under the limiting action of the limiting block 8. At this time, the spring 9 is compressed. At the same time, the locking mechanism on the top plate 4 can lock the brake wheel 2 a second time to prevent it from rotating. This process realizes the braking process, improves working efficiency, and thus enhances practicality.

[0033] Please see Figure 1 , Figure 2 and Figure 4 The locking mechanism includes an L-shaped rod 12, which is fixedly installed on the top plate 4. A locking wheel 13 is fixedly installed on the brake wheel 2. The locking wheel 13 has multiple locking grooves. After the two brake shoes 6 fix the brake wheel 2, the top plate 4 drives the L-shaped rod 12 to continue to rise until the top of the L-shaped rod 12 is inserted into the locking groove of the locking wheel 13, thereby locking the brake wheel 2 a second time and improving safety.

[0034] Please see Figure 1 , Figure 2 and Figure 4 A reinforcing rod 14 is fixedly installed on the L-shaped rod 12. The reinforcing rod 14 is fixedly connected to the top plate 4. The reinforcing rod 14 can strengthen the connection between the L-shaped rod 12 and the top plate 4, thereby improving stability.

[0035] Please see Figure 1 and Figure 2 Both brake shoes 6 have friction pads 15 at their inner ends. The friction pads 15 can slow down the speed of the brake wheel 2, thereby improving its practicality.

[0036] Please see Figure 1 and Figure 2The pumping unit body 1 is equipped with a protective box 16. The electric actuator 3, power supply 10, and controller 11 are all located inside the protective box 16. A door 17 is hinged to the protective box 16. The protective box 16 can protect the electrical equipment. When in use, the door 17 can be opened, thereby improving safety.

[0037] This utility model discloses a parking device for an oil pumping unit. When parking is required, the controller 11 controls the electric push rod 3 to operate. The electric push rod 3 pushes the top plate 4 to rise. The top plate 4, through the connecting column 7 and the connecting cylinder 5, pushes the two brake shoes 6 to rotate inward until both brake shoes 6 are in contact with the brake wheel 2, causing the brake wheel 2 to decelerate. The top plate 4 continues to rise, and the connecting column 7 slides inside the connecting cylinder 5 under the limiting action of the limiting block 8. At this time, the spring 9 is compressed. After the two brake shoes 6 fix the brake wheel 2, the top plate 4 drives the L-shaped rod 12 to continue to rise until the top of the L-shaped rod 12 is inserted into the locking groove of the locking wheel 13, which locks the brake wheel 2 a second time to prevent it from rotating. This process realizes the braking process.

[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A parking device for an oil pumping unit, comprising an oil pumping unit body (1), wherein a brake wheel (2) is provided on the oil pumping unit body (1), characterized in that, Also includes: The parking mechanism includes an electric push rod (3), which is fixedly installed on the pumping unit body (1). A top plate (4) is fixedly installed at the output end of the electric push rod (3). Two connecting cylinders (5) are hinged on the top plate (4). Two brake shoes (6) are hinged on the pumping unit body (1). A connecting column (7) is hinged on each of the two brake shoes (6). The two connecting columns (7) are slidably connected to the two connecting cylinders (5). Limit grooves are opened on both connecting cylinders (5). Limit blocks (8) are fixedly installed on both connecting columns (7). The two limit blocks (8) slide through the two limit grooves respectively. Springs (9) are fitted on both connecting columns (7). A power supply (10) and a controller (11) are provided on the pumping unit body (1). The electric push rod (3), the power supply (10) and the controller (11) are electrically connected. A locking mechanism is installed on the top plate (4) for locking the brake wheel (2) after parking.

2. The pumping unit parking device as described in claim 1, characterized in that: The locking mechanism includes an L-shaped rod (12), which is fixedly installed on the top plate (4). A locking wheel (13) is fixedly installed on the brake wheel (2), and multiple locking grooves are provided on the locking wheel (13).

3. The pumping unit parking device as described in claim 2, characterized in that: A reinforcing rod (14) is fixedly installed on the L-shaped rod (12), and the reinforcing rod (14) is fixedly connected to the top plate (4).

4. The pumping unit parking device as described in claim 3, characterized in that: Friction pads (15) are provided at the inner ends of both brake shoes (6).

5. The pumping unit parking device as described in claim 4, characterized in that: The pump body (1) is equipped with a protective box (16), and the electric push rod (3), power supply (10) and controller (11) are all located inside the protective box (16). The protective box (16) is hinged with a door (17).

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