Intelligent belt tension constant maintaining device and method

Abstract

The present invention relates to a belt tension constant maintaining device for oilfield production equipment, and specifically to an intelligent belt tension constant maintaining device. It includes a motor sliding base provided with a driving screw and a recovery motor provided with an output shaft, and is characterized in that it also includes a first sprocket, a roller, a gravity barrel, a second sprocket, and a third sprocket; the first sprocket is connected to the output shaft in a transmission manner; the roller is coaxially linked with the first sprocket and the second sprocket; the gravity barrel is hung on the roller by winding a driving rope; the third sprocket is connected to the second sprocket in a transmission manner; the third sprocket is coaxially linked with the driving screw; the sprocket transmission is adopted, the structure is simple, the working reliability is high, and it is suitable for the harsh working environment of outdoor well sites. The belt tensioning force can be adjusted in real time through preset parameters, the manual effort can be reduced, and the working efficiency can be improved. The real-time parameters of the belt can be obtained through sensors and counters, and the parameterization of the belt working conditions can be realized, which is conducive to the intelligent development of oilfield work.

Description

Technical Field

[0001] The invention relates to a belt tension constant maintaining device for oil field production equipment, and in particular to an intelligent belt tension constant maintaining device. Background Art

[0002] The oil pump is the main oil production equipment, most of which use belt drive mechanism to transmit power. In the production process, the belt will become less and less effective due to material aging, wear, and the influence of ambient temperature, causing the belt to slip and reduce transmission efficiency, thereby reducing the production efficiency of oil equipment. Therefore, after a period of production, the belt tension must be adjusted or replaced to maximize the transmission efficiency. Therefore, adjusting the belt tension or replacing the belt is a routine task of the oil production team and one of the important tasks in the daily management of the oil pump.

[0003] With the progress of society, workers used to use tools such as crowbars and sledgehammers to operate the machines, which had unfavorable factors such as heavy labor, long operation time, and poor safety. Therefore, realizing automation and intelligence to fundamentally improve production efficiency and ensure the safety of workers and reduce the labor intensity of workers is one of the key tasks of enterprises at present.

[0004] Pumping unit belt working condition survey:

[0005] Survey 1: According to statistics, the average time to replace or adjust the pumping unit belt is about 35 minutes

[0006] Survey 2: During the production process, the tension of the pumping unit belt needs to be adjusted several times.

[0007] Conclusion: Replacing or adjusting the pumping unit belt requires 2 people and takes about 35 minutes. A large number of oil production equipment in the oil field suffers huge losses in terms of belts alone.

[0008] The existing pumping unit belt adjustment device has the following advantages and disadvantages:

[0009] (1) The use of top screws for adjustment has the advantages of simple structure and easy use, but it also has irreplaceable disadvantages. The adjustment range is limited and the labor intensity of employees is not fundamentally reduced.

[0010] (2) The use of a tensioning wheel for adjustment has the advantage of obvious effect, but due to the addition of a set of tensioning wheels and a set of friction pairs, energy consumption is increased. At the same time, since the tensioning wheel is installed on the outside of the belt, it is easy for the belt to be delaminated during winter production, accelerating the degree of belt damage.

[0011] (3) The use of a swing bracket to adjust the belt tension has the advantages of easy adjustment and obvious effect. The disadvantage is that after the motor is raised, the motor vibrates violently because the production of the oil pump is a process of periodic load changes.

[0012] (4) The use of a sliding sleeve belt tensioning device has the advantages of easy adjustment and obvious effect. The disadvantage is that it cannot timely determine whether the belt tension is appropriate and cannot adjust the tension in time.

[0013] (5) The constant tension belt tensioning device has the advantages of easy adjustment and obvious effect. The disadvantage is that it cannot judge the actual degree of belt wear in time and cannot provide early warning. At the same time, it requires manual inspection and monitoring, which is inefficient and cannot be automated. Summary of the invention

[0014] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an intelligent belt tension constant maintaining device and method.

[0015] The technical solution is as follows:

[0016] An intelligent belt tension constant maintaining device comprises a motor sliding base provided with a driving screw, a motor provided with an output shaft, and also comprises a first sprocket, a roller, a gravity barrel, a second sprocket, and a third sprocket; the first sprocket is drivingly connected to the output shaft of the motor; the roller is coaxially linked with the first sprocket and the second sprocket; the gravity barrel is hung on the roller by winding a driving rope; the third sprocket is drivingly connected to the second sprocket; the third sprocket is coaxially linked with the driving screw; wherein the first sprocket and the second sprocket are one-way sprockets, when the gravity barrel descends, the roller rotates and the first sprocket remains stationary, and when the gravity barrel rises, the roller rotates and the second sprocket remains stationary.

[0017] Furthermore, it also includes a torque amplification box, which is provided with an input sprocket and an output sprocket; the input sprocket is drivingly connected to the second sprocket; the output sprocket is drivingly connected to the third sprocket.

[0018] Furthermore, it also includes a motor controller and a position sensor, the position sensor is connected to the motor controller, and the position sensor includes an upper limit position sensor and a lower limit position sensor; the upper limit position sensor is set at the upper limit position of the gravity bucket, and the lower limit position sensor is set at the lower limit position of the gravity bucket.

[0019] Furthermore, it also includes a counter, which is connected to the motor controller and is used to record the number of times the motor is started.

[0020] Furthermore, it also includes an intelligent control module, a display module, and a communication module. The intelligent control module is connected to the counter, the display module, the communication module, and the position sensor respectively to collect and process data signals of each module.

[0021] The intelligent control module is a single chip microcomputer.

[0022] The motor sliding base includes a sliding rod support plate, a sliding rod, a motor base plate, a sliding sleeve, an adjusting nut, and a driving screw; the sliding rod is mounted between two vertical plates; the sliding sleeve is fixed to the motor base plate, and the sliding sleeve is slidably mounted on the sliding rod; the adjusting nut is arranged on the motor base plate; the driving screw is matched with the adjusting nut worm gear.

[0023] The adjusting nut is hinged to the motor bottom plate.

[0024] The slide bars and motor base plates are arranged in pairs, and the two motor base plates are connected by motor base plate connecting bolts.

[0025] Preferably, a method for maintaining a constant tension of an intelligent belt is provided. When the gravity barrel drops to the lower limit position, the lower limit position signal is transmitted to the intelligent control module through the position sensor. After receiving the lower limit position signal, the intelligent control module sends a start signal to start the motor to lift the gravity barrel; when the gravity barrel rises to the upper limit position, the upper limit position signal is transmitted to the intelligent control module through the position sensor. After receiving the upper limit position signal, the intelligent control module sends a stop signal to stop the motor.

[0026] The beneficial effects of the present invention are:

[0027] The present invention adopts sprocket drive, has a simple structure, high working reliability, and is adaptable to the harsh working environment of outdoor well sites. The belt tensioning force can be adjusted in real time through preset parameters, which reduces manual effort and improves work efficiency. The real-time parameters of the belt are obtained through sensors and counters to realize parameterization of the belt working conditions, which is beneficial to the intelligent development of oil field work. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the structure of a motor sliding base provided with a driving screw rod;

[0030] In the figure: vertical plate 1, sliding sleeve 2, fixed base 3, sliding rod 4, dust cover 5, power box 6, power box door 7, control panel 8, motor transverse groove 9, motor base plate 10, sliding sleeve 11, motor base plate connecting bolt 12, sliding rod 13, adjusting nut 14, cross bar 15, adjusting nut vertical plate 16, sliding rod support plate 17, driving screw 18, motor shaft 19, driving sprocket 20, chain 21, first sprocket 22, driving rope 23, bearing 24, position sensor 25, control cable 26, intelligent control box 27, torque amplification box 28, gravity bucket 29, input sprocket 30, output sprocket 31, third sprocket 32, gravity bucket adjustment hole 33, second sprocket 34. DETAILED DESCRIPTION

[0031] To make the purpose and technical solution of the embodiments of the present invention clearer, the embodiments of the present invention are described in detail below. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0032] Embodiment 1:

[0033] An intelligent belt constant tension maintaining device comprises a motor sliding base and a constant tension maintaining mechanism, wherein the motor sliding base comprises a motor base, a sliding rod, and a driving screw, wherein the motor base is slidably arranged on the sliding rod, and the driving screw drives the motor base to perform reciprocating linear motion on the sliding rod through the worm gear transmission principle.

[0034] The constant tension maintaining mechanism comprises a motor, a driving sprocket, a first sprocket, a roller, a gravity barrel, a second sprocket, and a third sprocket.

[0035] The driving sprocket is arranged on the output shaft of the motor, the first sprocket is connected to the driving sprocket through a chain, the first sprocket and the second sprocket are arranged coaxially with the drum; the gravity barrel is connected to the drum by winding a driving rope; the third sprocket is arranged at the end of the driving screw.

[0036] The third sprocket is connected to the second sprocket through a chain transmission; wherein the first sprocket and the second sprocket are one-way sprockets, when the gravity bucket descends, the first sprocket does not move, and when the gravity bucket rises, the second sprocket does not move.

[0037] Embodiment 2:

[0038] An intelligent belt tension constant maintaining device also includes a torque amplification box, which is provided with an input sprocket and an output sprocket; the input sprocket is drivingly connected to the second sprocket; the output sprocket is drivingly connected to the third sprocket.

[0039] A gear set is arranged inside the torque amplification box, which utilizes the lever principle to amplify the torque transmitted from the second sprocket to the input sprocket and transmit it to the output sprocket, thereby achieving the effect of generating a larger tightening torque with a smaller input torque.

[0040] Embodiment three:

[0041] An intelligent belt tension constant maintaining device also includes a motor controller and a position sensor. The position sensor is connected to the motor controller, and the position sensor includes an upper limit position sensor and a lower limit position sensor. The upper limit position sensor is set at the upper limit position of the gravity barrel, and the lower limit position sensor is set at the lower limit position of the gravity barrel.

[0042] The motor controller has functions such as motor start and stop, motor speed regulation, etc., and is used to control the motor.

[0043] The position sensor is a proximity position sensor used to sense the position of the gravity bucket and transmit the switch signal to the motor controller.

[0044] Embodiment 4:

[0045] An intelligent belt tension constant maintaining device also includes a counter, which is connected to a motor controller or a position sensor and is used to record the number of times the motor is started.

[0046] The counter is a digital counter, which records the number of switch signals generated when the position sensor senses the gravity bucket or the number of pulse signals generated when the motor starts and stops, and this number is the number of motor starts and stops.

[0047] Embodiment five:

[0048] An intelligent belt tension constant maintaining device also includes an intelligent control module, a display module, and a communication module. The intelligent control module is respectively connected to a counter, a display module, a communication module, and a position sensor for collecting and processing data signals of each module.

[0049] The intelligent control module is a single chip microcomputer. It uses ultra-large scale integrated circuit technology to integrate a central processing unit CPU with data processing capabilities, random access memory RAM, read-only memory ROM, multiple I / O ports and interrupt systems, timer / counter and other functions (including display drive circuit, pulse width modulation circuit, analog multiplexer, A / D converter and other circuits).

[0050] Embodiment six:

[0051] A motor sliding base comprises a vertical plate, a sliding rod, a motor bottom plate, a sliding sleeve, an adjusting nut and a driving screw rod.

[0052] The vertical plates are arranged in pairs and fixed to external equipment or a fixed base to support the slide bar. The fixed base is provided with a slotted bolt hole, a horizontal plate is fixed below the vertical plates, a bolt hole is provided on the horizontal plate, and the vertical plates are bolted to the fixed base.

[0053] The slide bar is a tube body, and a slide bar support plate is inserted inside. The slide bar support plate is interference fit with the inner wall of the slide bar, and the slide bar support plate is perpendicular to the ground to improve the rigidity of the slide bar and reduce the vibration of the slide bar. A dust cover is provided on the outer cover of the slide bar.

[0054] The slide rod is mounted between two vertical plates; the slide sleeve is fixed on the motor bottom plate, and the slide sleeve is slidably mounted on the slide rod; the adjusting nut is arranged on the motor bottom plate; the driving screw rod is matched with the adjusting nut worm gear.

[0055] The adjusting nut is hinged to the motor bottom plate.

[0056] The slide bars and motor base plates are arranged in pairs, and the two motor base plates are connected by motor base plate connecting bolts.

[0057] Embodiment seven:

[0058] The invention discloses a method for maintaining a constant tension of an intelligent belt. When a gravity bucket drops to a lower limit position, a lower limit position signal is transmitted to an intelligent control module through a position sensor. After receiving the lower limit position signal, the intelligent control module sends a start signal to start a motor to lift the gravity bucket. When the gravity bucket rises to an upper limit position, an upper limit position signal is transmitted to the intelligent control module through a position sensor. After receiving the upper limit position signal, the intelligent control module sends a stop signal to stop the motor.

[0059] The intelligent control module has a preset motor start and stop reminder value. When the motor start and stop times reach the preset value, a reminder signal is sent to the industrial computer or other external device through the communication module, and the reminder information is displayed through the display module.

[0060] The working principle of the present invention is:

[0061] The gravity barrel transmits torque to the driving screw through the sprocket transmission and the torque amplifier box, driving the driving screw to rotate, and the driving screw drives the motor base to make a linear motion, changing the position of the motor on the motor base, thereby realizing the tension of the belt; due to the setting of the one-way sprocket, when the gravity barrel descends, it will not drive the motor output shaft to rotate. When the gravity barrel reaches the lower limit position, the lower limit position sensor senses the position of the gravity barrel and sends a motor start signal. The motor starts and lifts the gravity barrel. Due to the setting of the one-way sprocket, when the gravity barrel rises, it will not drive the input sprocket to rotate. After the gravity barrel reaches the upper limit position, the upper limit position sensor stops the motor from rotating, that is, an adjustment is completed, and continuous tension is maintained. The number of times the gravity barrel rises / falls or the motor starts and stops is recorded by a counter, which can reflect the degree of belt aging. The technician sets a preset value based on experience. After the preset value is reached, a reminder signal is sent through the intelligent control module to achieve the purpose of intelligence.

[0062] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An intelligent belt tension constant maintaining device, comprising a motor sliding base provided with a driving screw and a recovery motor provided with an output shaft, characterized in that: It also includes a first sprocket, a roller, a gravity barrel, a second sprocket, and a third sprocket; the first sprocket is connected to the output shaft in a transmission manner; the roller is coaxially linked with the first sprocket and the second sprocket; the gravity barrel is hung on the roller by winding a driving rope; the third sprocket is connected to the second sprocket in a transmission manner; the third sprocket is coaxially linked with the driving screw; wherein the first sprocket and the second sprocket are one-way sprockets, when the gravity barrel descends, the roller rotates, and the first sprocket does not move; when the gravity barrel rises, the roller rotates, and the second sprocket does not move; it also includes a torque amplification box, and the torque amplification box is provided with an input sprocket and an output sprocket; the input sprocket is connected to the second sprocket in a transmission manner; the output sprocket is connected to the third sprocket in a transmission manner; it also includes a recovery motor controller and a position sensor, the position sensor is connected to the recovery motor controller, and the position sensor includes an upper limit position sensor and a lower limit position sensor; the upper limit position sensor is arranged at the upper limit position of the gravity barrel, and the lower limit position sensor is arranged at the lower limit position of the gravity barrel; it also includes a counter, the counter is connected to the recovery motor controller, and is used to record the number of times the recovery motor is started.

2. The intelligent belt tension constant maintaining device according to claim 1, characterized in that: It also includes an intelligent control module, a display module, and a communication module. The intelligent control module is connected to the counter, the display module, the communication module, and the position sensor respectively to collect and process data signals of each module.

3. The intelligent belt tension constant maintaining device according to claim 2, characterized in that: The intelligent control module is a single chip microcomputer.

4. The intelligent belt constant tension maintaining device according to any one of claims 1 to 3, characterized in that: The motor sliding base includes a sliding rod support plate, a sliding rod, a motor base plate, a sliding sleeve, an adjusting nut, and a driving screw; the sliding rod is mounted between two vertical plates; the sliding sleeve is fixed to the motor base plate, and the sliding sleeve is slidably mounted on the sliding rod; the adjusting nut is arranged on the motor base plate; the driving screw is matched with the adjusting nut worm gear.

5. The intelligent belt constant tension maintaining device according to claim 4, characterized in that: The adjusting nut is hinged to the motor bottom plate.

6. The intelligent belt tension constant maintaining device according to claim 4, characterized in that: The slide bars and motor base plates are arranged in pairs, and the two motor base plates are connected by motor base plate connecting bolts.

7. A method for maintaining a constant tension of an intelligent belt based on the device for maintaining a constant tension of an intelligent belt according to claim 5 or 6, characterized in that: When the gravity bucket drops to the lower limit position, the lower limit position signal is transmitted to the intelligent control module through the position sensor. After receiving the lower limit position signal, the intelligent control module sends a start signal to start the recovery motor to lift the gravity bucket up; when the gravity bucket rises to the upper limit position, the upper limit position signal is transmitted to the intelligent control module through the position sensor. After receiving the upper limit position signal, the intelligent control module sends a stop signal to stop the recovery motor.

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