Beam-pumping unit belt transmission automatic tensioning and early warning system

Abstract

The invention relates to the technical field of oil production engineering equipment, in particular to an automatic tensioning and early warning system for belt transmission of a beam-pumping unit. The beam-pumping unit belt transmission automatic tensioning and early warning system comprises an automatic control system connected with a mechanical tensioning system, and the automatic control system monitors the running state of a belt and controls the mechanical tensioning system to move the position of a pumping unit motor so as to tension the belt. A limiter is arranged in the mechanical tensioning system to monitor the adjustment stroke of the belt, and an alarm signal is timely sent to the automatic control system. According to the automatic tensioning and early warning system for the belt transmission of the beam-pumping unit, the automatic control system is matched with the mechanical tensioning system, the working state of the belt is monitored in real time and adjusted in time, the adjusting precision is high, shutdown for manual adjustment is not needed, and the shutdown time and the construction time are shortened; the limiting device is arranged to monitor the belt adjustment value and send an early warning signal, the working state of the belt is judged, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of oil production engineering equipment, in particular to an automatic tensioning and early warning system for a belt drive of a beam pumping unit. Background Art

[0002] During operation, the position and fixed angle of the motor of a beam pumping unit can change under the influence of the external environment and vibration of the unit, directly increasing wear on the transmission belt. Most existing pumping unit belts have good ductility. After a period of continuous use, the belt will undergo a certain range of plastic deformation, increasing the belt length and causing slippage failure. In the prior art, manual intervention is often used to address the problem of belt slippage during operation by regularly stopping the pumping unit, measuring the tightness, and then adjusting the belt tension. However, this manual intervention method relies primarily on experience, resulting in unstable adjustment results, long downtime, and dangerous operation, especially at night or in rainy or snowy weather. During daily operation, it is impossible to accurately determine whether the belt is slipping, and the system relies heavily on the experience of inspection workers. Therefore, to address the above shortcomings, an automatic tensioning and early warning system for the belt transmission of a beam pumping unit is proposed. Summary of the Invention

[0003] (1) Technical issues to be resolved In response to the shortcomings of the existing technology, the present invention provides an automatic tensioning and early warning system for the belt drive of a walking beam oil pump, which solves the problems of unstable adjustment effect of the belt tensioning state, long downtime during the adjustment process, dangerous operation, especially the greater difficulty in construction at night or in rainy and snowy weather, and the inability to accurately judge whether the belt has a tendency to slip during daily operation of the belt, and a high dependence on the experience of inspection workers.

[0004] (2) Technical solution To solve the above problems, the present invention provides an automatic tensioning and early warning system for a beam pumping unit belt drive, comprising: Automatic control system and mechanical tensioning system; the automatic control system is connected to the mechanical tensioning system, the automatic control system monitors the running status of the belt, and controls the mechanical tensioning system to tension the belt according to its running status; The automatic control system includes a monitoring module, an output module and a display module. The monitoring module is installed on the belt to monitor the running status of the belt and send the status parameters to the output module. The output module calculates the adjustment method for the belt according to the status parameters and sends the adjustment signal to the mechanical tensioning system to adjust the belt. At the same time, the real-time parameters and control signals are sent to the display module for display. The mechanical tensioning system includes a controller, a drive module, and an adjustment module. The controller is connected to the drive module and an automatic control system, and controls the operation of the drive module according to a control signal sent by the automatic control system. The adjustment module is fixedly connected to the drive module and the pumping unit motor. The operation of the drive module drives the adjustment module and the pumping unit motor to move, thereby changing the position between the driving pulley and the driven pulley of the belt to achieve belt tensioning. The mechanical tensioning system is provided with a limiter to monitor the stroke of the adjustment module. When the stroke of the adjustment module reaches the maximum value of the belt stretching, an alarm signal is sent to the output module, and the output module sends the alarm signal to the display module to issue an early warning.

[0005] Preferably, the monitoring module is installed on the driving pulley and the driven pulley of the belt, and monitors the rotational speed of the driving pulley and the driven pulley at the same time. The output module calculates the real-time slip rate of the belt based on the rotational speed of the driving pulley and the driven pulley and compares it with the set slip rate. When the real-time slip rate is greater than the set slip rate, an adjustment signal is issued.

[0006] Preferably, the set slip rate is set according to the material, type and size of the belt.

[0007] Preferably, the adjustment module includes a fixed base, on which a bracket translation guide rail is provided, the direction of the bracket translation guide rail is parallel to the belt direction and the position corresponds; a motor fixed bracket is provided on the bracket translation guide rail, and the motor fixed bracket can move back and forth along the bracket translation guide rail, and the top of the motor fixed bracket is connected to the pumping unit motor, driving the pumping unit motor to move synchronously when moving.

[0008] Preferably, the drive module includes a drive motor and a worm gear transmission mechanism; the drive motor is connected to the controller and operates according to the control signal; the drive motor is parallel to the bracket and perpendicular to the guide rail direction and is connected to the motor fixing bracket through the worm gear transmission mechanism.

[0009] Preferably, the worm gear transmission mechanism includes a turbine shaft and a worm, the turbine shaft is coaxially connected to the end of the drive motor, the worm is parallel to the bracket parallel guide rail and is connected to the motor fixed bracket; the worm and the turbine shaft are in contact and matched through gears, and when the drive motor is activated, the worm moves along the direction of the bracket parallel guide rail.

[0010] Preferably, the drive motor is connected to the worm gear transmission mechanism via a connecting sleeve, and a dust cover is provided outside the worm gear.

[0011] Preferably, the limiter is installed on the outside of the dust cover.

[0012] (3) Beneficial effects The automatic tensioning and early warning system for the belt drive of a beam pumping unit provided by the present invention monitors the working status of the belt in real time through the cooperation of an automatic control system and a mechanical tensioning system, and adjusts the belt in time when the belt tends to slip, with high adjustment accuracy; there is no need to stop the machine for manual adjustment during daily work, which reduces downtime and construction time and improves economy and safety; by providing a limiter to limit the belt adjustment value and send an early warning signal, the working status of the belt can be judged in time, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a system diagram of the automatic tensioning and early warning system for the belt drive of a beam pumping unit of the present invention; Figure 2 This is a structural diagram of the mechanical tensioning system of the automatic tensioning and early warning system for the belt drive of a beam pumping unit of the present invention.

[0014] Among them, 1. Controller; 2. Drive motor; 3. Connecting sleeve; 4. Turbine worm gear transmission mechanism; 5. Dust cover; 6. Bracket translation guide rail; 7. Fixed base; 8. Motor fixing bracket; 9. Limiter. DETAILED DESCRIPTION

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by “upper”, “lower”, “inside”, “outside”, “top”, “bottom”, etc. are all based on the orientations or positional relationships shown in the accompanying drawings. The purpose is only to facilitate the description of the present invention and simplify the description. It does not indicate or imply that the referred parts must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0017] like Figure 1-2As shown, the present invention provides an automatic tensioning and early warning system for a walking beam pumping unit belt drive, specifically comprising: an automatic control system and a mechanical tensioning system, the automatic control system comprising a monitoring module, an output module and a display module, the monitoring module being installed on the belt to monitor the operating status of the belt, determine whether the operating status meets the requirements and send the status parameters and the judgment result to the output module, the output module simultaneously sends the judgment result to the mechanical tensioning system and the display module, and the display module displays the signal in the form of an image; the automatic control system is connected to the mechanical tensioning system, sends the monitoring result to the mechanical tensioning system, and the mechanical tensioning system adjusts the pumping unit belt according to the monitoring result.

[0018] The mechanical tensioning system includes a controller 1, a driving module and an adjustment module. The adjustment module is connected to the oil pumping unit motor. Generally, the driving pulley of the oil pumping unit belt is installed on the oil pumping unit motor. The adjustment module can drive the oil pumping unit motor to move, thereby changing the distance between the driving pulley and the driven pulley of the oil pumping unit belt to achieve tension adjustment of the oil pumping unit belt; the driving module is connected to the adjustment module, and after the driving module is actuated, it can drive the adjustment module to actuate to adjust the belt and provide power for the adjustment module; the controller 1 is connected to the driving module and the output module at the same time, calculates the adjustment amount according to the signal sent by the output module and controls the action of the driving module according to the adjustment amount.

[0019] Among them, the monitoring module mainly monitors the speed of the driving pulley and the driven pulley of the oil pumping unit belt, and calculates the real-time slip rate of the belt based on the speed of the driving pulley and the driven pulley, and compares the real-time slip rate with the set slip rate to make a judgment. When the real-time slip rate is greater than the set slip rate, it is judged that adjustment is needed.

[0020] It's important to note that the slip setting must be pre-entered into the monitoring module. The slip setting is based on the specific pumping unit belt model. Generally, when entering data before the device is operational, the diameters of the driving and driven pulleys are also entered into the system as a basis for calculating slip and determining whether adjustments are necessary.

[0021] In the present invention, the adjustment module includes a fixed base 7, the position of the fixed base 7 corresponds to the position of the oil pumping unit belt and is fixed, and a bracket translation guide rail 6 is provided on the fixed base 7, the direction of the bracket translation guide rail 6 is parallel to the direction of the oil pumping unit belt and the position corresponds, and a motor fixed bracket 8 is provided on the bracket translation guide rail 6, and the motor fixed bracket 8 can move back and forth along the bracket translation guide rail 6, and the motor fixed bracket 8 is connected to the oil pumping unit motor. When the motor fixed bracket 8 moves, it can drive the oil pumping unit motor and the oil pumping unit belt driving pulley installed on the oil pumping unit motor to move synchronously, thereby changing the distance between the oil pumping unit belt driving pulley and the driven pulley, thereby achieving the effect of adjusting the tension of the oil pumping unit belt.

[0022] Among them, the bottom of the fixed base 7 and the motor fixing support plate 8 are provided with several long through holes to adapt to motors or pumping unit models with different spans, so that the device can be adapted to various types of pumping units, thereby improving the practicality of the device.

[0023] like Figure 2 As shown, the drive module includes a drive motor 2 and a worm gear transmission mechanism 4. The drive motor 2 is connected to a controller 1, which controls the movement of the drive motor 2 according to adjustment requirements. The worm gear transmission mechanism 4 is simultaneously connected to the drive motor 2 and a motor mounting bracket 8. When the drive motor 2 moves, the worm gear transmission mechanism 4 moves with the drive motor 2 and drives the motor mounting bracket 8 to move and adjust. The worm gear transmission mechanism 4 can convert the circular motion of the main shaft when the drive motor 2 is in motion into linear motion. It also has good self-locking performance. When the drive motor 2 stops moving, it can stop moving synchronously in a timely manner, thereby improving the accuracy of device adjustment and improving the working efficiency of the device.

[0024] The turbine-worm gear transmission mechanism 4 includes a turbine shaft and a worm. The turbine shaft is coaxially connected to the drive motor 2, and the worm is connected to the motor fixing bracket 8. The direction of the turbine shaft and the drive motor 2 is perpendicular to the direction of the pumping unit belt, and the direction of the worm is parallel to the direction of the pumping unit belt. A gear is provided on the outside of the turbine shaft to contact and cooperate with the thread on the worm. When the turbine shaft rotates with the action of the drive motor 2, the gear and thread can push and pull the screw along the belt direction, thereby driving the motor fixing bracket 8 to move and adjust the pumping unit belt. The worm and the motor fixing bracket 8 are fixed by welding a support plate to prevent connection, thereby improving the strength and stability of the device. The turbine shaft and the drive motor 2 are connected by a pin. When the turbine shaft is damaged, it can be disassembled in time, reducing the difficulty of maintenance of the device.

[0025] It should be noted that the worm of the worm gear transmission mechanism 4 is equipped with a dust cover 5 to prevent dust from clogging the worm threads during operation, thereby improving the stability of the device and extending its service life. Generally, to enhance the stability of the device connection, a connecting sleeve 3 is provided between the drive motor 2 and the worm gear. The connecting sleeve 3 is connected to the drive motor 2 via a pin, and the worm gear is threaded onto the connecting sleeve 3, further enhancing the strength and stability of the device connection.

[0026] In addition, the mechanical tensioning system is equipped with a limiter 9 to monitor the travel of the adjustment module in real time. When the travel of the adjustment module reaches its maximum value, the limiter 9 sends an alarm signal to the output module, which in turn sends the alarm signal to the display module to alert personnel. When the travel of the adjustment module reaches its maximum value, the belt is fully tightened. This warning effectively prevents belt breakage, reduces unnecessary losses, and improves the economic efficiency of the device. Typically, the limiter 9 is mounted outside the dust cover 5 to facilitate monitoring of the adjustment amount.

[0027] The automatic belt tensioning and warning system for a beam pumping unit provided by the present invention can automatically adjust the belt when it shows a tendency to slip without stopping the unit for operation. The adjustment effect is good, the labor intensity of the workers is reduced, and the construction risk is reduced. The specific working process of the device is as follows: Step 1: Install the device in the pumping unit as required, start the device and the pumping unit for normal operation. During operation, the monitoring module monitors the speed of the driving and driven pulleys of the pumping unit's belt in real time and calculates the real-time slip rate. The calculated result is compared with the set slip rate and the operating data is sent to the display module.

[0028] In step 2, when the real-time slip ratio exceeds the set slip ratio, the monitoring module determines that adjustment is needed and sends a signal to the controller via the output module. The controller then controls the drive module and adjustment module based on the determination and real-time data. During this process, the controller activates the drive motor, which, through the worm gear drive, drives the pumping unit motor, thereby adjusting the pumping unit belt tension.

[0029] Step 3: When the adjustment amount of the adjustment module is greater than the maximum adjustment amount of the belt, the limiter sends an alarm signal to the output module.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. The automatic tensioning and warning system for the belt drive of the beam pumping unit is characterized by: include: Automatic control system and mechanical tensioning system; the automatic control system is connected to the mechanical tensioning system, the automatic control system monitors the running status of the belt, and controls the mechanical tensioning system to tension the belt according to its running status; The automatic control system includes a monitoring module, an output module and a display module. The monitoring module is installed on the belt to monitor the running status of the belt, judge whether the running status meets the requirements and send the status parameters and judgment results to the output module. The output module sends the judgment results to the mechanical tensioning system and the display module at the same time. The display module displays the signal in the form of an image; The mechanical tensioning system comprises a controller (1), a driving module and an adjustment module. The controller (1) is connected to the driving module and the output module at the same time, calculates the adjustment amount according to the signal sent by the output module and controls the action of the driving module according to the adjustment amount; the adjustment module is fixedly connected to the driving module and the pumping unit motor at the same time, and the action of the driving module drives the adjustment module and the pumping unit motor to move, thereby changing the position between the driving wheel and the driven wheel of the belt to achieve tensioning of the belt; The mechanical tensioning system is provided with a limiter (9) to monitor the stroke of the adjustment module. When the stroke of the adjustment module reaches the maximum value of the belt stretching, an alarm signal is sent to the output module, and the output module sends the alarm signal to the display module to issue an early warning.

2. The intelligent tensioning and warning system for belt drive of a beam pumping unit according to claim 1 is characterized in that: The monitoring module monitors the rotation speeds of the driving wheel and the driven wheel of the belt at the same time. The controller (1) calculates the real-time slip rate of the belt according to the rotation speeds of the driving wheel and the driven wheel and compares it with the set slip rate. When the real-time slip rate is greater than the set slip rate, it is determined that adjustment is required.

3. The intelligent tensioning and warning system for belt drive of a beam pumping unit according to claim 2 is characterized in that: The set slip rate is set according to the material, type and size of the belt.

4. The intelligent tensioning and warning system for belt drive of a beam pumping unit according to claim 1 is characterized in that: The adjustment module comprises a fixed base (7), a bracket translation guide rail (6) is provided on the fixed base (7), the direction of the bracket translation guide rail (6) is parallel to the belt direction and the position corresponds to the belt direction; a motor fixing bracket (8) is provided on the bracket translation guide rail (6), the motor fixing bracket (8) can move forward and backward along the bracket translation guide rail (6), and the upper part of the motor fixing bracket (8) is connected to the pumping unit motor, and drives the pumping unit motor to move synchronously when moving.

5. The intelligent tensioning and warning system for belt drive of a beam pumping unit according to claim 4 is characterized in that 1 , the driving module includes a driving motor (2) and a worm gear transmission mechanism (4); the driving motor (2) is connected to the controller (1) and operates according to a control signal; the driving motor (2) is parallel to the bracket and perpendicular to the guide rail (6) and is connected to the motor fixing bracket (8) through the worm gear transmission mechanism (4).

6. The intelligent tensioning and warning system for belt drive of a beam pumping unit according to claim 5 is characterized in that: The worm gear transmission mechanism (4) includes a turbine shaft and a worm, wherein the turbine shaft is coaxially connected to the end of the drive motor (2), and the worm is parallel to the bracket parallel guide rail (6) and connected to the motor fixed bracket (8); the worm and the turbine shaft are in contact and matched through gears, and when the drive motor (2) is in operation, the worm moves along the bracket parallel guide rail (6).

7. The intelligent tensioning and warning system for belt drive of a beam pumping unit according to claim 6 is characterized in that: The drive motor (2) is connected to the turbine worm gear transmission mechanism (4) via a connecting shaft sleeve (3), and a dust cover (5) is provided outside the worm gear.

8. The intelligent tensioning and warning system for belt drive of a beam pumping unit according to claim 7 is characterized in that: The stopper (9) is installed on the outside of the dust cover (5).

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