Safety device of oil pumping unit

Abstract

The invention provides an oil pumping unit safety device which comprises a brake assembly and an oil pumping unit, the brake assembly comprises a brake disc and a limiting part, the limiting part is detachably connected to the brake disc, and under the condition that the limiting part is connected to the brake disc, the limiting part limits rotation of the brake disc; and the operation assembly comprises an operation part and a clutch part, the clutch part is connected between the operation part and the limiting part, the operation part is suitable for driving the limiting part to be connected with or separated from the brake disc through the clutch part, and the clutch part is used for connecting or disconnecting transmission connection between the operation part and the limiting part. According to the safety device of the oil pumping unit, the risk that the limiting part is driven to move due to the fact that the operation part is touched by mistake can be reduced, reliability and stability of limiting rotation of the brake disc by the limiting part can be improved, and reliable guarantee is provided for safe and stable production operation.

Description

Technical Field

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

[0002] In related technologies, pumping units are typically equipped with a dual braking system. This system restricts the movement of the brake discs during braking, reducing the risk of brake failure. To facilitate operation, some dual braking systems have their control terminals located on the ground. However, this arrangement also increases the risk of accidental activation, hindering the system's ability to reliably restrict brake disc movement and increasing safety hazards during production operations. Summary of the Invention

[0003] This disclosure aims to address at least one of the technical problems existing in the prior art or related technologies.

[0004] In view of this, a safety device for an oil pumping unit is provided according to an embodiment of the present disclosure, comprising:

[0005] The braking assembly includes a brake disc and a limiting part, the limiting part being detachably connected to the brake disc, and when the limiting part is connected to the brake disc, the limiting part restricts the rotation of the brake disc;

[0006] The operating component includes an operating part and a clutch part. The clutch part is connected between the operating part and the limiting part. The operating part is adapted to drive the limiting part to connect or disconnect from the brake disc through the clutch part. The clutch part is used to connect or disconnect the transmission connection between the operating part and the limiting part.

[0007] In one feasible implementation, the pumping unit safety device further includes:

[0008] A drive assembly, connected to the limiting part, is used to drive the limiting part to connect to or separate from the brake disc.

[0009] In one feasible implementation, the limiting portion includes:

[0010] The transmission component has a first input end, a second input end, and a power output end. Both the first input end and the second input end are connected to the power output end. The drive assembly is connected to the first input end, and the clutch is connected between the operating part and the second input end.

[0011] A mating part is provided on the periphery of the brake disc. The outer peripheral wall of the brake disc has a mating groove. The mating part is suitable for being inserted into the mating groove. When the mating part is inserted into the mating groove, the mating part and the brake disc are matched to limit the rotation of the brake disc.

[0012] The elastic element connects the power output end and the mating part, while the transmission element is used to drive the mating part and the elastic element closer to or away from the brake disc.

[0013] The power output end has a first working position and a second working position. When the power output end is in the first working position, the mating part is inserted into the mating groove, or the mating part abuts against the outer peripheral wall of the brake disc and the elastic element is in a compressed state. When the power output end is in the second working position, the mating part is separated from the brake disc.

[0014] In one feasible implementation, the limiting part further includes:

[0015] A connector is used to connect the elastic element and the mating element, with the mating element rotatably connected to the connector.

[0016] In one feasible implementation, the transmission component includes:

[0017] A gearbox having a first input terminal and a second input terminal;

[0018] The lead screw is connected to the output shaft of the gearbox;

[0019] A transmission slider is mounted on a transmission screw. The transmission slider has a power output end and is engaged with the transmission screw in a transmission connection.

[0020] In one feasible implementation, the braking assembly further includes:

[0021] The first control unit is used to control the operation of the drive assembly based on the position information of the transmission slider in the axial direction of the transmission screw.

[0022] In one feasible implementation, there are multiple mating grooves, which are arranged at intervals along the circumference of the brake disc.

[0023] In one feasible implementation, there are multiple elastic elements, each of which is connected at one end to the power output end and at the other end to the mating element.

[0024] In one feasible implementation, the driving component includes:

[0025] A stepper motor, connected to the limiting part, is used to drive the limiting part to connect to or separate from the brake disc.

[0026] In one feasible implementation, the driving component further includes:

[0027] The detection unit is used to obtain information about the rotation of the brake disc.

[0028] The second control unit is used to control the operation of the stepper motor based on the rotation information.

[0029] In one feasible implementation, the operating component further includes:

[0030] A universal joint connects the operating part and the clutch part.

[0031] Compared with the prior art, this disclosure has at least the following beneficial effects: The oil pumping unit safety device provided in the embodiments of this disclosure includes a braking assembly and an operating assembly. The operating part of the operating assembly can be connected to the limiting part of the braking assembly via a clutch part. The clutch part can connect or disconnect the transmission connection between the operating part and the limiting part. When the clutch part connects the transmission connection between the operating part and the limiting part, the operating part can drive the limiting part to connect or disconnect from the brake disc of the braking assembly via the clutch part. This allows the operator to manually control the limiting part via the operating part, so that the limiting part restricts or releases the restriction on the rotation of the brake disc. Conversely, when the clutch part disconnects the transmission connection between the operating part and the limiting part, the operating part cannot transmit power to the limiting part via the clutch part. This reduces the risk of the operating part accidentally moving the limiting part, which is beneficial to improving the reliability and stability of the limiting part's restriction on the rotation of the brake disc, and provides a reliable guarantee for the safe and stable operation of production. Attached Figure Description

[0032] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of exemplary embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0033] Figure 1 This is a schematic structural diagram of a pumping unit safety device according to an embodiment of the present disclosure;

[0034] Figure 2 A schematic structural diagram of a gearbox according to an embodiment of this disclosure;

[0035] Figure 3 This is a schematic connection structure diagram of a transmission lead screw and a transmission slider according to one embodiment of the present disclosure.

[0036] in, Figures 1 to 3 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0037] 100 Braking components; 200 Drive components; 300 Operating components;

[0038] 110 Brake disc; 120 Limiting part; 130 First control part;

[0039] 210 Stepper motor; 220 Detection unit; 230 Second control unit;

[0040] 310 Operating section; 320 Clutch section;

[0041] 121 Transmission components; 122 Mating components; 123 Elastic components; 124 Connecting components;

[0042] 1211 Gearbox; 1212 Lead screw; 1213 Transmission slider;

[0043] 110a Mating groove; 121a First input end; 121b Second input end; 121c Power output end; 121d First gear; 121e Second gear. Detailed Implementation

[0044] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0045] like Figures 1 to 3 As shown, an embodiment of this disclosure provides a safety device for an oil pumping unit, comprising: a braking assembly 100, including a brake disc 110 and a limiting part 120, the limiting part 120 being detachably connected to the brake disc 110, wherein when the limiting part 120 is connected to the brake disc 110, the limiting part 120 restricts the rotation of the brake disc 110; and an operating assembly 300, including an operating part 310 and a clutch part 320, the clutch part 320 being connected between the operating part 310 and the limiting part 120, the operating part 310 being adapted to drive the limiting part 120 to connect or disconnect from the brake disc 110 via the clutch part 320, and the clutch part 320 being used to connect or disconnect the transmission connection between the operating part 310 and the limiting part 120.

[0046] This disclosure includes at least the following beneficial effects: The oil pumping unit safety device provided in the embodiments of this disclosure includes a braking assembly 100 and an operating assembly 300. The operating part 310 of the operating assembly 300 can be connected to the limiting part 120 of the braking assembly 100 via a clutch part 320, and the clutch part 320 can connect or disconnect the transmission connection between the operating part 310 and the limiting part 120. When the clutch part 320 connects the transmission connection between the operating part 310 and the limiting part 120, the operating part 310 can drive the limiting part 120 to connect or disconnect from the brake disc 110 of the braking assembly 100 via the clutch part 320, thereby facilitating operation. Operators can manually control the limiting part 120 through the operating part 310 to restrict or release the restriction on the rotation of the brake disc 110. Conversely, when the clutch part 320 disconnects the transmission connection between the operating part 310 and the limiting part 120, the operating part 310 cannot transmit power to the limiting part 120 through the clutch part 320. This reduces the risk of the operating part 310 accidentally moving the limiting part 120, which improves the reliability and stability of the limiting part 120 in restricting the rotation of the brake disc 110 and provides a reliable guarantee for the safe and stable operation of production.

[0047] It is understood that the aforementioned clutch 320 can have an engaged state and a disengaged state. In the engaged state, the clutch 320 connects the transmission connection between the operating part 310 and the limiting part 120. In the disengaged state, the clutch 320 disconnects the transmission connection between the operating part 310 and the limiting part 120. The aforementioned clutch 320 can be a manual clutch 320 or an electric clutch 320, that is, the switching between the aforementioned engaged state and the aforementioned disengaged state of the clutch 320 can be manually controlled or electrically controlled. For example, the aforementioned clutch 320 may include an electromagnetic clutch connected between the operating part 310 and the limiting part 120. It is easy to understand that regardless of whether the clutch 320 is a manual clutch 320 or an electric clutch 320, the movement control of the limiting part 120 by the operating part 310 must be performed when the clutch 320 is in the aforementioned engaged state. In practical applications, the clutch 320 can be set to the aforementioned disengaged state as its normal state. That is, when there is no need to adjust the connection between the limiting part 120 and the brake disc 110, the clutch 320 can be kept in the aforementioned disengaged state to further reduce the risk of the operating part 310 being accidentally activated and causing the limiting part 120 to move. Correspondingly, when it is necessary to adjust the connection between the limiting part 120 and the brake disc 110, the clutch 320 can be switched from the aforementioned disengaged state to the aforementioned engaged state first, and then the movement of the limiting part 120 can be controlled by the operating part 310. In practical applications, there can be a variety of ways to control the state of the clutch 320, and the specific settings can be combined with actual needs. No further limitations are made here.

[0048] It is understandable that, considering the ease of use of the aforementioned operating unit 310, in practical applications, the aforementioned operating unit 310 can be placed on the ground of the production site. Moreover, the aforementioned setting of the pumping unit safety device can ensure the ease of use of the operating unit 310 while reducing the risk of the operating unit 310 being accidentally touched and causing the limiting part 120 to move, thus providing a guarantee for the limiting part 120 to stably and reliably restrict the rotation of the brake disc 110.

[0049] It should be noted that, in practical applications, the brake disc 110 can be mounted on the drive shaft of the pumping unit, and the brake disc 110 is adapted to rotate with the aforementioned drive shaft; the aforementioned pumping unit may also include brake pads, and the brake disc 110 is adapted to cooperate with the aforementioned brake pads to brake the drive shaft by friction, thereby achieving braking of the pumping unit; correspondingly, in practical applications, the pumping unit safety device provided in this embodiment can be used to perform two-stage braking on the pumping unit, that is, after the aforementioned drive shaft is braked, the limiting part 120 can be adjusted to connect to the brake disc 110, so that the limiting part 120 further restricts the rotation of the brake disc 110 and the drive shaft, preventing the aforementioned drive shaft from rotating.

[0050] like Figure 1 As shown, in some examples, the pumping unit safety device further includes a drive assembly 200 connected to the limiting part 120 for driving the limiting part 120 to connect to or disconnect from the brake disc 110.

[0051] In this technical solution, the pumping unit safety device may further include the aforementioned drive assembly 200. It is understood that the aforementioned drive assembly 200 may be, but is not limited to, an electric drive assembly 200, a hydraulic drive assembly 200, or a pneumatic drive assembly 200. Based on the aforementioned configuration, the pumping unit safety device can drive the limiting part 120 to move through the drive assembly 200, so that the limiting part 120 is connected to or separated from the brake disc 110. This enables the limiting part 120 to restrict or release the restriction on the rotation of the brake disc 110, further improving the ease of adjustment of the connection between the limiting part 120 and the brake disc 110, reducing the operational difficulty and control efficiency of the pumping unit safety device, and helping to reduce the frequency of manual adjustment of the limiting part 120 by the operator through the operating part 310, thereby reducing the workload of the operator when operating the pumping unit safety device.

[0052] It is understandable that when the pumping unit safety device includes the aforementioned drive assembly 200, if it is necessary to adjust the connection between the limiting part 120 and the brake disc 110, the operation of the aforementioned drive assembly 200 can be prioritized to drive the limiting part 120 to move. Correspondingly, if the aforementioned drive assembly 200 cannot operate due to malfunction or other circumstances in actual application, the aforementioned operating assembly 300 allows operators to easily adjust the limiting part 120 through the operating assembly 300, thereby improving the operational control reliability and ease of use of the pumping unit safety device. For example, the aforementioned clutch 320 is used to disconnect the transmission connection between the operating part 310 and the limiting part 120 when the aforementioned drive assembly 200 is energized, and to connect the transmission connection between the operating part 310 and the limiting part 120 when the aforementioned drive assembly 200 is de-energized.

[0053] It is understood that the operation of the aforementioned drive component 200 can be manually controlled. For example, the pumping unit safety device can have a control button, which is electrically connected to the drive component 200. The electrical connection can be, but is not limited to, a wireless connection or a wired connection. When the control button is triggered, the operating state of the drive component 200 can be controlled. The operating state can include, but is not limited to, start state, stop state, output rotation direction, output rotation speed, etc. Accordingly, there can be multiple control buttons, and each operating state corresponds to at least one control button. The control button can be installed indoors or in an electrical cabinet to reduce the risk of accidental touch or misoperation of the control button.

[0054] Alternatively, the operation of the aforementioned drive component 200 can be automatically controlled; for example, the pumping unit safety device may include a memory and a processor, the memory storing a control program, the aforementioned control program implementing a control method for controlling the operation of the aforementioned drive component 200 during operation, and the processor running the aforementioned control program to control the operation of the drive component 200 based on the aforementioned control method.

[0055] Alternatively, the operation of the aforementioned drive component 200 may be semi-automatic. For example, the pumping unit safety device may include the aforementioned memory, the aforementioned processor, and the aforementioned control button. Accordingly, the process of the drive component 200 driving the limiting part 120 to connect to the brake disc 110 may be controlled and executed by the aforementioned control program, and the process of the drive component 200 driving the limiting part 120 to separate from the brake disc 110 may be controlled and executed by the aforementioned control button.

[0056] like Figure 1 and Figure 2As shown, in some examples, the limiting part 120 includes: a transmission member 121 having a first input end 121a, a second input end 121b, and a power output end 121c, wherein the first input end 121a and the second input end 121b are both connected to the power output end 121c; a drive assembly 200 is connected to the first input end 121a; and a clutch part 320 is connected between the operation part 310 and the second input end 121b; a mating member 122 is disposed on the periphery of the brake disc 110, wherein a mating groove 110a is formed on the outer peripheral wall of the brake disc 110, and the mating member 122 is adapted to be inserted into the mating groove 110a. When the mating member 122 is inserted into the mating groove 110a, the mating member 122 and the brake disc 110a are engaged. The brake disc 110 is limited by a limiting fit to restrict its rotation; an elastic member 123 is connected between the power output end 121c and the mating member 122, and a transmission member 121 is used to drive the mating member 122 and the elastic member 123 to move closer to or away from the brake disc 110; wherein, the power output end 121c has a first working position and a second working position; when the power output end 121c is in the first working position, the mating member 122 is inserted into the mating groove 110a, or the mating member 122 abuts against the outer peripheral wall of the brake disc 110 and the elastic member 123 is in a compressed state; when the power output end 121c is in the second working position, the mating member 122 is separated from the brake disc 110.

[0057] In this technical solution, the limiting part 120 may include the aforementioned transmission member 121, mating member 122, and elastic member 123. Based on the aforementioned configuration, the transmission member 121 can receive the power output from the drive assembly 200 or the operation assembly 300, and accordingly use the power output end 121c to drive the elastic member 123 and mating member 122 to move. By adjusting the positional relationship between the mating member 122 and the mating groove 110a, the rotation of the brake disc 110 can be restricted or the restriction on the rotation of the brake disc 110 can be released using the mating member 122. The aforementioned power output end 121c has a first working position and a second working position in the direction of movement. When it is necessary to use the mating part 122 to restrict the rotation of the brake disc 110, the pumping unit safety device can use the drive device to drive the transmission part 121 so that the transmission part 121 is located in the aforementioned first working position, thereby allowing the mating part 122 to be inserted into the mating groove 110a, so that the mating groove 110a and the brake disc 110 directly enter the limiting engagement state, thereby restricting the rotation of the brake disc 110. Alternatively, the mating part 122 can be made to abut against the outer peripheral wall of the brake disc 110 and the elastic member 123 can be in a compressed state, thereby allowing the mating part 122 to press tightly against the outer peripheral wall of the brake disc 110, thereby increasing the rotational resistance of the brake disc 110. When the mating part 122 abuts against the outer peripheral wall of the brake disc 110 and the elastic member 123 is in a compressed state, the brake disc 110 rotates. Then the aforementioned mating groove 110a easily corresponds to the aforementioned mating part 122. Thus, the mating part 122 can be inserted into the mating groove 110a under the elastic force of the elastic member 123, thereby achieving stable restriction on the rotation of the brake disc 110. When it is necessary to release the restriction on the rotation of the brake disc 110, the pumping unit safety device can use the drive device to drive the transmission member 121 so that the transmission member 121 is in the aforementioned second working position, thereby separating the mating part 122 from the brake disc 110, preventing the mating part 122 from interfering with the rotation of the brake disc 110, and facilitating the smooth operation of the pumping unit.

[0058] It is understood that the aforementioned elastic element 123 has elastic stretching capability, and correspondingly, the elastic element 123 has a compressed state, a relaxed state, and an elongated state.

[0059] For example, the aforementioned elastic element 123 can be a spring.

[0060] For example, the aforementioned mating part 122 is used to be disposed on the body or housing of the oil pumping unit.

[0061] like Figure 1 As shown, in some examples, the limiting part 120 further includes a connector 124 connected between the elastic member 123 and the mating member 122, the mating member 122 being rotatably connected to the connector 124.

[0062] In this technical solution, the limiting part 120 may also include the aforementioned connecting member 124; based on the aforementioned configuration, the mating member 122 can have high structural flexibility. When the power output end 121c is in the first working position, the mating member 122 can adaptively adjust its posture under the force applied by the elastic member 123 and the brake disc 110, thereby facilitating the mating member 122 to press against the outer peripheral wall of the brake disc 110 or to form a stable limiting fit relationship with the mating groove 110a, which can provide a more reliable guarantee for the limiting effect of the limiting part 120 on the rotation of the brake disc 110.

[0063] For example, the axis of rotation of the mating member 122 relative to the connecting member 124 is aligned with the axial direction of the brake disc 110.

[0064] like Figures 1 to 3 As shown, in some examples, the transmission component 121 includes: a gearbox 1211 having a first input end 121a and a second input end 121b; a transmission screw 1212 connected to the output shaft of the gearbox 1211; and a transmission slider 1213 disposed on the transmission screw 1212, the transmission slider 1213 having a power output end 121c, and the transmission slider 1213 engaging with the transmission screw 1212 in a transmission cooperation.

[0065] In this technical solution, the transmission component 121 may include the aforementioned gearbox 1211, transmission screw 1212, and transmission slider 1213. Based on the aforementioned configuration, the transmission component 121 can receive the power output from the drive assembly 200 or the operation assembly 300 via the gearbox 1211, and drive the transmission screw 1212 to rotate via the output shaft of the gearbox 1211. Furthermore, based on the transmission cooperation between the transmission screw 1212 and the transmission slider 1213, the transmission slider 1213 is driven to move axially along the transmission screw 1212. Correspondingly, the aforementioned spring... The elastic element 123 can be connected between the slider and the mating element 122. As the slider moves along the axial direction of the transmission screw 1212, it can further drive the elastic element 123 and the mating element 122 to move closer to or away from the brake disc 110. The transmission engagement between the transmission slider 1213 and the transmission screw 1212 has good self-locking properties, which helps to prevent the transmission slider 1213 from driving the transmission screw 1212 in the opposite direction. This can improve the positional stability of the mating element 122 and provide a guarantee for the limiting part 120 to stably and reliably limit the rotation of the brake disc 110.

[0066] It is understandable that the axial direction of the aforementioned transmission screw 1212 intersects with the axial direction of the aforementioned brake disc 110.

[0067] It is understood that the aforementioned transmission slider 1213 has an internal thread that matches the external thread of the transmission screw 1212, and the elastic element 123 can restrict the axial rotation of the transmission slider 1213 around the transmission screw 1212.

[0068] For example, the aforementioned gearbox 1211 may include a first gear 121d and a second gear 121e that mesh with each other; one end of the gear shaft of the aforementioned first gear 121d is a first input end 121a, and the other end is connected to the aforementioned transmission lead screw 1212; one end of the gear shaft of the aforementioned second gear 121e is a second input end 121b. The aforementioned first gear 121d and the aforementioned second gear 121e may both be spur gears, helical gears, or bevel gears, and the specific configuration can be determined according to actual needs, without further limitations here.

[0069] For example, the aforementioned gearbox 1211 is used to be installed in the body or housing of the oil pumping unit.

[0070] In some feasible examples, the aforementioned gearbox 1211 and the aforementioned clutch 320 are integral structures.

[0071] In some examples, the braking assembly 100 further includes a first control unit 130 for controlling the operation of the drive assembly 200 and / or the clutch based on the position information of the transmission slider 1213 in the axial direction of the transmission screw 1212.

[0072] In this technical solution, the braking assembly 100 may also include the aforementioned first control unit 130; based on the aforementioned configuration, the operation of the drive assembly 200 can be controlled based on the aforementioned position information, thereby improving the automation level and operational reliability of the pumping unit safety device, which is conducive to improving the operational stability of the transmission slider 1213, the elastic element 123 and the mating element 122, and providing a guarantee for the limiting part 120 to stably and reliably limit the rotation of the brake disc 110.

[0073] like Figure 3 As shown, exemplarily, the aforementioned first control unit 130 can be a limit switch, and there are two limit switches, each disposed at one end of the external thread of the transmission screw 1212. When the distance between the transmission slider 1213 and the end of the external thread is less than a preset distance, the corresponding limit switch is triggered. When triggered, the limit switch controls the drive assembly 200 to close, thereby preventing the transmission slider 1213 from moving out of the distribution range of the external thread. It is understood that the aforementioned position information includes the distance information between the transmission slider 1213 and the end of the external thread.

[0074] like Figure 1 As shown, in some examples, there are multiple mating grooves 110a, which are arranged at intervals along the circumference of the brake disc 110.

[0075] In this technical solution, there can be multiple mating grooves 110a, and the multiple mating grooves 110a can be arranged at intervals along the circumference of the brake disc 110. This increases the probability of the mating part 122 being inserted into the mating groove 110a when the power output end 121c is in the first working position, which is beneficial for the limiting part 120 to stably and reliably restrict the rotation of the brake disc 110.

[0076] like Figure 1 As shown, in some examples, there are multiple elastic elements 123, each of which is connected at one end to the power output end 121c and at the other end to the mating part 122.

[0077] In this technical solution, multiple elastic members 123 can be connected in parallel between the power output end 121c and the mating member 122. This increases the clamping force between the mating member 122 and the brake disc 110 when the power output end 121c is in the first working position, or enhances the positional stability of the mating member 122 in the mating groove 110a. This helps the limiting part 120 to stably and reliably restrict the rotation of the brake disc 110.

[0078] like Figure 1 As shown, in some examples, the drive assembly 200 includes a stepper motor 210 connected to the limiting portion 120 for driving the limiting portion 120 to connect to or disconnect from the brake disc 110.

[0079] In this technical solution, the drive component 200 may include the aforementioned stepper motor 210; based on the aforementioned configuration, the motion control accuracy of the limiting part 120 can be improved, providing a guarantee for the limiting part 120 to stably and reliably limit the rotation of the brake disc 110.

[0080] like Figure 1 As shown, in some examples, the drive assembly 200 further includes: a detection unit 220 for acquiring rotation information of the brake disc 110; and a second control unit 230 for controlling the stepper motor 210 to run according to the rotation information.

[0081] In this technical solution, the drive assembly 200 may also include the aforementioned detection unit 220 and the second control unit 230; based on the aforementioned configuration, the operation of the drive assembly 200 can be controlled based on the aforementioned rotation information, thereby improving the automation level and operational reliability of the pumping unit safety device, which is conducive to improving the motion stability of the limit unit 120 and providing a guarantee for the limit unit 120 to stably and reliably limit the rotation of the brake disc 110.

[0082] In some feasible examples, the aforementioned second control unit 230 is used to determine whether the brake disc 110 has stopped rotating based on the aforementioned rotation information, and when the aforementioned brake disc 110 stops rotating, it controls the stepper motor 210 to run so as to drive the limit unit 120 to connect to the aforementioned brake disc 110.

[0083] For example, the aforementioned detection unit 220 may include an encoder, which is used to acquire the real-time angular position of the aforementioned mating groove 110a in the circumferential direction of the rotation axis of the brake disc 110, and the aforementioned mating member 122 is located at a preset angular position in the circumferential direction of the rotation axis of the brake disc 110. The encoder is also used to send a pulse signal to the second control unit 230 when the aforementioned real-time angular position coincides with the aforementioned preset angular position. The aforementioned second control unit 230 is used to determine that the aforementioned brake disc 110 has stopped rotating if it does not receive the aforementioned pulse signal within a first preset time period, and to control the stepper motor 210 to run so as to drive the limiting part 120 to connect to the aforementioned brake disc 110. It is understood that the aforementioned rotation information includes the aforementioned real-time angular position; the aforementioned first preset time period can be set according to actual needs, and is not limited here; the number of the aforementioned encoders can be multiple, and the specific number and arrangement position of the encoders can be set according to actual needs, and is not limited here.

[0084] For example, the aforementioned detection unit 220 may include a distance sensor, which is used to acquire the real-time relative position between the aforementioned mating groove 110a and the aforementioned mating member 122; the aforementioned second control unit 230 is used to determine that the aforementioned brake disc 110 stops rotating when the aforementioned real-time relative position remains unchanged within a second preset time period, and to control the stepper motor 210 to run, so as to drive the limiting part 120 to connect to the aforementioned brake disc 110. It is understood that the aforementioned rotation information includes the aforementioned real-time relative position; the aforementioned second preset time period can be set according to actual needs, and is not limited in detail here.

[0085] For example, the aforementioned detection unit 220 and stepper motor 210 are both used to be installed on the body or housing of the oil pumping unit.

[0086] In some examples, the operating component 300 also includes a universal joint connected between the operating part 310 and the clutch part 320.

[0087] In this technical solution, the operating component 300 may also include the aforementioned universal joint. It is understood that the aforementioned operating part 310 may include a handwheel and a connecting shaft, and the aforementioned universal joint is connected between the input shaft of the clutch part 320 and the aforementioned connecting shaft. Based on the aforementioned configuration, in practical applications, the axial direction of the aforementioned connecting shaft may be different from the axial direction of the input shaft of the aforementioned clutch part 320, thereby improving the flexibility of the arrangement of the operating part 310 and the clutch part 320, which is beneficial to improving the installation convenience of the pumping unit safety device.

[0088] In some feasible examples, the operating component 300 also includes a universal joint connecting the operating part 310 and the clutch part 320.

[0089] In this disclosure, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0090] In the description of this disclosure, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or unit 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 disclosure.

[0091] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0092] The above are merely preferred embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A safety device for an oil pumping unit, characterized in that, include: A braking assembly includes a brake disc and a limiting portion, the limiting portion being detachably connected to the brake disc, wherein when the limiting portion is connected to the brake disc, the limiting portion restricts the rotation of the brake disc; The operating component includes an operating part and a clutch part. The clutch part is connected between the operating part and the limiting part. The operating part is adapted to drive the limiting part to connect or disconnect from the brake disc through the clutch part. The clutch part is used to connect or disconnect the transmission connection between the operating part and the limiting part.

2. The oil pumping unit safety device according to claim 1, characterized in that, Also includes: A drive assembly, connected to the limiting part, is used to drive the limiting part to connect to or separate from the brake disc.

3. The oil pumping unit safety device according to claim 2, characterized in that, The limiting part includes: A transmission component has a first input end, a second input end, and a power output end. The first input end and the second input end are both connected to the power output end. The drive assembly is connected to the first input end, and the clutch is connected between the operating part and the second input end. A fitting component is disposed on the periphery of the brake disc. The outer peripheral wall of the brake disc has a fitting groove. The fitting component is adapted to be inserted into the fitting groove. When the fitting component is inserted into the fitting groove, the fitting component and the brake disc are matched in a limiting manner to restrict the rotation of the brake disc. An elastic element is connected between the power output end and the mating component, and the transmission component is used to drive the mating component and the elastic element closer to or away from the brake disc; The power output end has a first working position and a second working position; when the power output end is in the first working position, the mating member is inserted into the mating groove, or the mating member abuts against the outer peripheral wall of the brake disc and the elastic member is in a compressed state; when the power output end is in the second working position, the mating member is separated from the brake disc.

4. The oil pumping unit safety device according to claim 3, characterized in that, The limiting part further includes: A connector is provided between the elastic member and the mating member, the mating member being rotatably connected to the connector.

5. The safety device for an oil pumping unit according to claim 3, characterized in that, The transmission component includes: A gearbox having a first input terminal and a second input terminal; A lead screw is connected to the output shaft of the gearbox; A transmission slider is disposed on the transmission lead screw, the transmission slider has the power output end, and the transmission slider is in transmission cooperation with the transmission lead screw.

6. The oil pumping unit safety device according to claim 5, characterized in that, The braking assembly also includes: The first control unit is used to control the operation of the drive assembly based on the position information of the transmission slider in the axial direction of the transmission screw.

7. The oil pumping unit safety device according to claim 3, characterized in that, The number of the mating grooves is multiple, and the multiple mating grooves are arranged at intervals along the circumference of the brake disc.

8. The pumping unit safety device according to any one of claims 2 to 7, characterized in that, The driving component includes: A stepper motor is connected to the limiting part and is used to drive the limiting part to connect to or separate from the brake disc.

9. The oil pumping unit safety device according to claim 8, characterized in that, The driving component also includes: The detection unit is used to acquire the rotation information of the brake disc; The second control unit is used to control the operation of the stepper motor based on the rotation information.

10. The pumping unit safety device according to any one of claims 1 to 7, characterized in that, The operating components also include: A universal joint is connected between the operating part and the clutch part.

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