阅读说明：本技术 一种智能控制型抽油机 (Intelligent control type beam-pumping unit ) 是由 黄少梅 于 2020-08-04 设计创作，主要内容包括：本发明属于抽油机技术领域,尤其为一种智能控制型抽油机,包括底座,底座的顶部固定连接有支架,支架的顶部设置有球铰,球铰的顶部设置有游梁,游梁的一端设置有驴头,驴头的底部设置有悬挂绳,悬挂绳远离驴头的一端设置有抽油头,抽油头的外表面设置有传感器,游梁远离驴头的一端设置有第一连杆,第一连杆远离游梁的一端设置有第二连杆,第二连杆靠近第一连杆的一端设置有配重块,第二连杆的另一端设置有传动轴,传动轴的两侧贯穿设置有安装座,安装座的外侧面设置有皮带,皮带远离安装座的一端设置有电动机,电动机远离安装座的一侧设置有智能控制柜。本发明通过设置传感器与智能控制柜,来自动控制抽油机的工作。(The invention belongs to the technical field of pumping units, and particularly relates to an intelligent control type pumping unit which comprises a base, wherein a support is fixedly connected to the top of the base, a spherical hinge is arranged at the top of the support, a walking beam is arranged at the top of the spherical hinge, a horse head is arranged at one end of the walking beam, a suspension rope is arranged at the bottom of the horse head, an oil pumping head is arranged at one end, away from the horse head, of the suspension rope, a sensor is arranged on the outer surface of the oil pumping head, a first connecting rod is arranged at one end, away from the horse head, of the walking beam, a second connecting rod is arranged at one end, away from the walking beam, of the first connecting rod, a balancing weight is arranged at one end, close to the first connecting rod, of the second connecting rod, a transmission shaft is arranged at the other end of the second connecting rod, mounting seats are. The invention automatically controls the work of the oil pumping unit by arranging the sensor and the intelligent control cabinet.)

1. An intelligent control type pumping unit is characterized in that: comprises a base (1), a support (2) is fixedly connected to the top of the base (1), a spherical hinge (3) is arranged at the top of the support (2), a walking beam (4) is arranged at the top of the spherical hinge (3), a horse head (5) is arranged at one end of the walking beam (4), a suspension rope (6) is arranged at the bottom of the horse head (5), an oil pumping head (7) is arranged at one end, away from the horse head (5), of the suspension rope (6), a sensor (8) is arranged on the outer surface of the oil pumping head (7), a first connecting rod (9) is arranged at one end, away from the horse head (5), of the walking beam (4), a second connecting rod (10) is arranged at one end, away from the walking beam (4), of the first connecting rod (9), a balancing weight (11) is arranged at one end, close to the first connecting rod (9), of the second connecting rod (10), and a transmission shaft (12) is arranged at, the utility model discloses a motor, including transmission shaft (12), lateral surface, belt (14), motor (15), base (1) are located motor (15) and are kept away from one side of mount pad (13) and be provided with intelligent control cabinet (16), the both sides of transmission shaft (12) are run through and are provided with mount pad (13), the lateral surface of mount pad (13) is provided with belt (14), belt (14) are kept away from the one end of mount pad (13) and are provided with motor (15), the one side.

2. The intelligent control type pumping unit according to claim 1, wherein: one end of the support (2) is hinged with the walking beam (4) through a spherical hinge (3), and the other end of the support (2) is fixedly connected with the base (1).

3. The intelligent control type pumping unit according to claim 1, wherein: the suspension rope (6) is a steel wire rope, one end of the suspension rope (6) is fixedly connected with the front end of the horse head (5), and the other end of the suspension rope (6) is fixedly connected with the oil pumping head (7).

4. The intelligent control type pumping unit according to claim 1, wherein: one end of the first connecting rod (9) is hinged with one end of the walking beam (4) far away from the horse head (5), the other end of the first connecting rod (9) is hinged with one end of the second connecting rod (10), and the second connecting rod (10) is close to one end of the first connecting rod (9) and is fixedly connected with a balancing weight (11).

5. The intelligent control type pumping unit according to claim 1, wherein: one end and transmission shaft (12) fixed connection of first connecting rod (9) are kept away from in second connecting rod (10), be equipped with insurance groove (1200) on transmission shaft (12), the output of transmission shaft (12) runs through the outside that extends to mount pad (13), the shape of mount pad (13) is the U type, transmission shaft (12) and mount pad (13) swing joint.

6. The intelligent control type pumping unit according to claim 1, wherein: the motor (15) is fixedly connected with the base (1), and the output end of the motor (15) is in transmission connection with the transmission shaft (12) through a belt (14).

7. The intelligent control type pumping unit according to claim 1, wherein: the intelligent control cabinet (16) is electrically connected with the oil pumping head (7), the intelligent control cabinet (16) is electrically connected with the sensor (8), and the intelligent control cabinet (16) is electrically connected with the motor (15).

8. The intelligent control type pumping unit according to claim 1, wherein: mount pad (13) are equipped with the brake and embrace mechanism (17), the brake is embraced mechanism (17) and is equipped with brake base (1700), brake base (1700) with mount pad (13) are through bolted connection, the brake is embraced mechanism (17) and is included: the brake base is characterized by comprising a first arc (1701), a second arc (1702), a third arc (1704) and a connecting shaft (1703), wherein the first arc (1701) is connected to the brake base (1700), one end of the first arc (1701) is rotatably connected with the third arc (1704) through the connecting shaft (1703), the other end of the first arc (1701) is hinged with the second arc (1702), and the first arc (1701), the second arc (1702) and the third arc (1704) are connected to form a circle;

an arc moving groove (1705) is arranged on the second arc (1702), a connecting column (1706) and a first screw rod (1707) are arranged inside the arc moving groove (1705), the upper cross section and the lower cross section of the connecting column (1706) are fixedly connected with a moving block (1708), a driving device is arranged in the moving block (1708), the driving moving block (1708) moves along the arc moving groove (1705), groove holes are respectively formed in two sides of the moving block (1708), a sliding rod (1709) is arranged in a left groove hole of the moving block (1708), a third arc (1704) is inserted in a right groove hole of the moving block (1708), a sliding sleeve (1710) is sleeved on the sliding rod (1709), a pressing block (1711721) is fixedly connected to the left side of the sliding sleeve (1710), a threaded hole is formed in the pressing block (1711), the first screw rod (1707) penetrates through the threaded hole to be in threaded connection with the pressing block (1711), and a side, of the pressing block (1711) close to the second arc (1702), is fixedly connected with a connecting block (, one side, far away from the second arc (1714), of the moving block (1708) is fixedly connected with a threaded cylinder (1712), the threaded cylinder (1712) is connected with a second screw (1713) through threads, and the second screw (1713) penetrates through the moving block (1708) and is sleeved with a third arc (1704);

the inner walls of the first arc (1701) and the second arc (1702) are fixedly connected with a limiting mechanism (1714), the limiting mechanism (1714) comprises a support rod (1715) and an arc-shaped shell (1719), the support rod (1715) is hinged with the middle of the arc-shaped shell (1719), a sliding groove is formed in the support rod (1715), a sliding block (1716) is arranged in the sliding groove, one side of the sliding block (1716) penetrates through the support rod (1715) and is fixedly connected with a first connecting block (1727), the sliding block (1716) can slide in the sliding groove, the first connecting block (1727) is hinged with a connecting rod (1717), one end, far away from the first connecting block (1727), of the connecting rod (1717) is hinged with a second connecting block (1718), one side of the second connecting block (1718) is fixedly connected with the outside of the arc-shaped shell (1719), and a spring (1720) is arranged on one side, close to the support rod (1715), in the arc-shaped shell (1719), the other end of spring (1720) is connected with arc piece (1721), be equipped with installation body (1728) in arc casing (1719), installation body (1728) and arc casing (1719) fixed connection, there are head rod (1723) and second connecting rod (1724) at installation body (1728) middle part through hinged joint, one side that installation body (1728) was kept away from in head rod (1723) is rotated and is connected with gyro wheel (1722), gyro wheel (1722) with the inboard contact of arc piece (1721), one side fixedly connected with safety catch (1725) that installation body (1728) was kept away from in second connecting rod (1724).

9. The intelligent control type pumping unit according to claim 1, wherein: further comprising:

the displacement sensor is arranged on the outer surface of the oil pumping head (7) and is used for detecting the displacement of the oil pumping head (7) during each work;

the pressure sensor is arranged at one end, close to the horse head (5), of the suspension rope (6) and used for detecting the pressure of a contact point of the suspension rope (6) and the horse head (5) in each working process;

a rotational speed sensor provided on the motor (15) for detecting an actual rotational speed of the motor (15);

the alarm is arranged in the intelligent control cabinet (16);

the controller respectively with displacement sensor, pressure sensor, alarm and speed sensor electric connection, the controller adjusts based on displacement sensor, pressure sensor and speed sensor the rotational speed of motor (15) and control alarm report to the police including following step:

the method comprises the following steps: the controller controls the motor (15) and the oil pumping head (7) to work for N times;

and calculating the torque of the second link (10) at each operation according to the displacement sensor, the pressure sensor and the formula (1):

T_i＝300X_i+0.236X_i(N_imax-N_imin) (1)

wherein, T_iIs the torque of the second connecting rod (10) at the i-th operation, X_iDisplacement of pumping head (7) for ith operation detected by displacement sensor，N_imaxThe maximum pressure N of the contact point of the suspension rope (6) and the horse head (5) detected by the pressure sensor in the ith working process of the motor_iminThe minimum pressure of a contact point between a suspension rope (6) and a horse head (5) detected by a pressure sensor in the ith working process of the motor is 1-N;

step two: calculating the actual torque of the second connecting rod (10) based on the step one and the formula (2):

wherein, T_SActual torque, T, for operation of the second link_iThe torque of the second connecting rod in the ith working process;

step three: calculating a target rotation speed of the motor (15) according to the calculated actual torque of the second connecting rod (10) and the formula (3):

when the detection value of the rotating speed sensor exceeds the target rotating speed threshold range of the motor (15), the controller controls the alarm to give an alarm, and meanwhile, the controller adjusts the rotating speed of the motor (15) to the target rotating speed of the motor (15);

wherein the content of the first and second substances,

Technical Field

The invention relates to the technical field of pumping units, in particular to an intelligent control type pumping unit.

Background

The oil pumping machine is a machine for exploiting oil, and is commonly called a head knocking machine. The pumping unit is the most main lifting equipment in the rod pumping system. According to whether there is a walking beam, it can be divided into a walking beam type pumping unit and a non-walking beam type pumping unit. The beam-pumping unit is basically characterized by simple structure, easy manufacture, convenient use, especially, it can be operated in oil field for all weather, and is reliable in use. Therefore, the oil pumping unit is most widely applied, although the disadvantages of large acceleration of the horse head suspension point movement, poor balancing effect, low efficiency, large volume and heavy weight in long stroke exist. When the existing equipment is used for pumping oil, the oil pumping device can only be mechanically driven to move up and down, and the phenomenon of empty pumping is easy to occur because whether oil exists at the descending position cannot be detected.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an intelligent control type oil pumping unit, which solves the problem of easy occurrence of idle pumping.

In order to achieve the purpose, the invention provides the following technical scheme: comprises a base, the top of the base is fixedly connected with a bracket, the top of the bracket is provided with a spherical hinge, the top of the spherical hinge is provided with a walking beam, one end of the walking beam is provided with a horse head, the bottom of the horse head is provided with a suspension rope, an oil pumping head is arranged at one end of the suspension rope, which is far away from the horse head, a sensor is arranged on the outer surface of the oil pumping head, a first connecting rod is arranged at one end of the walking beam far away from the horse head, a second connecting rod is arranged at one end of the first connecting rod far away from the walking beam, one end of the second connecting rod close to the first connecting rod is provided with a balancing weight, the other end of the second connecting rod is provided with a transmission shaft, the two sides of the transmission shaft are provided with mounting seats in a penetrating way, the outer side surface of each mounting seat is provided with a belt, the one end that the mount pad was kept away from to the belt is provided with the motor, one side that the mount pad was kept away from to the motor is provided with the intelligent control cabinet.

Preferably, one end of the support is connected with the walking beam hinge through a spherical hinge, and the other end of the support is fixedly connected with the base.

Preferably, the suspension rope is a steel wire rope, one end of the suspension rope is fixedly connected with the front end of the horse head, and the other end of the suspension rope is fixedly connected with the oil pumping head.

Preferably, the one end of first connecting rod and the one end hinged joint that the horse head was kept away from to the walking beam, the other end of first connecting rod and the one end hinged joint of second connecting rod, the one end fixedly connected with balancing weight that the second connecting rod is close to first connecting rod.

Preferably, one end of the second connecting rod, which is far away from the first connecting rod, is fixedly connected with the transmission shaft, the output end of the transmission shaft penetrates through and extends to the outside of the mounting seat, the mounting seat is U-shaped, and the transmission shaft is movably connected with the mounting seat.

Preferably, the motor is fixedly connected with the base, and the output end of the motor is in transmission connection with the transmission shaft through a belt.

Preferably, the intelligent control cabinet is electrically connected with the oil pumping head, the intelligent control cabinet is electrically connected with the sensor, and the intelligent control cabinet is electrically connected with the motor.

Preferably, the mount pad is equipped with the brake and embraces the mechanism tightly, the brake is embraced the mechanism tightly and is equipped with the brake base, the brake base with the mount pad passes through bolted connection, the brake is embraced the mechanism tightly and is included: the brake base is provided with a first arc, a second arc, a third arc and a connecting shaft, the first arc is connected to the brake base, one end of the first arc is rotatably connected with the third arc through the connecting shaft, the other end of the first arc is hinged with the second arc, and the first arc, the second arc and the third arc form a circle after being connected;

an arc-shaped moving groove is arranged on the second arc, a connecting column and a first screw rod are arranged inside the arc-shaped moving groove, the upper and lower sections of the connecting column are fixedly connected with moving blocks, a driving device is arranged in the moving blocks and drives the moving blocks to move along the arc-shaped moving grooves, two sides of the moving block are respectively provided with a groove hole, a sliding rod is arranged in the groove hole at the left side of the moving block, a third arc is inserted into a groove hole at the right side of the moving block, a sliding sleeve is sleeved on the sliding rod, an extrusion block is fixedly connected at the left side of the sliding sleeve, the extrusion block is provided with a threaded hole, the first screw penetrates through the threaded hole to be in threaded connection with the extrusion block, one side of the extrusion block close to the second arc is fixedly connected with a cushion block, one side of the moving block far away from the second arc is fixedly connected with a threaded cylinder, the threaded cylinder is connected with a second screw rod through threads, and the second screw rod penetrates through the moving block and is sleeved with a third arc;

the inner walls of the first arc and the second arc are fixedly connected with a limiting mechanism, the limiting mechanism comprises a support rod and an arc-shaped shell, the support rod is hinged with the middle part of the arc-shaped shell, a chute is arranged in the support rod, a slide block is arranged in the chute, one side of the slide block penetrates through the support rod and is fixedly connected with a first connecting block, the slide block can slide in the chute, the first connecting block is hinged with a connecting rod, one end of the connecting rod, far away from the first connecting block, is hinged with a second connecting block, one side of the second connecting block is fixedly connected with the outside of the arc-shaped shell, one side of the inside of the arc-shaped shell, close to the support rod, is provided with a spring, the other end of the spring is connected with an arc-shaped piece, an installation body is arranged in the arc-shaped shell and is fixedly connected with the arc-shaped shell, and, one side of the first connecting rod, which is far away from the installation body, is rotatably connected with a roller, the roller is in contact with the inner side of the arc-shaped sheet, and one side of the second connecting rod, which is far away from the installation body, is fixedly connected with a safety pin.

Preferably, the method further comprises the following steps:

the displacement sensor is arranged on the outer surface of the oil pumping head and used for detecting the displacement of the oil pumping head during each work;

the pressure sensor is arranged at one end of the suspension rope close to the horse head and used for detecting the pressure of the suspension rope in each working process of a contact point of the suspension rope and the horse head;

the rotating speed sensor is arranged on the motor and used for detecting the actual rotating speed of the motor;

the alarm is arranged in the intelligent control cabinet;

the controller respectively with displacement sensor, pressure sensor, alarm and speed sensor electric connection, the controller adjusts based on displacement sensor, pressure sensor and speed sensor the rotational speed of motor and control alarm report to the police including following step:

the method comprises the following steps: the controller controls the motor and the oil pumping head to work for N times;

and calculating the torque of the second connecting rod at each working time according to the displacement sensor, the pressure sensor and the formula (1):

T_i＝300X_i+0.236X_i(N_imax-N_imin) (1)

wherein, T_iIs the torque of the second connecting rod at the ith work, X_iDisplacement of pumping head for i-th operation detected by displacement sensor, N_imaxThe maximum pressure N of the contact point of the suspension rope and the horse head detected by the pressure sensor in the ith working process of the motor_iminThe minimum pressure of a contact point of a suspension rope and a horse head, which is detected by a pressure sensor in the ith working process of the motor, is 1-N;

step two: calculating the actual torque of the second connecting rod based on the step one and the formula (2):

wherein, T_SActual torque, T, for operation of the second link_iThe torque of the second connecting rod in the ith working process;

step three: calculating a target rotation speed of the motor according to the calculated actual torque of the second link operation and formula (3):

when the detection value of the rotating speed sensor exceeds the target rotating speed threshold range of the motor, the controller controls the alarm to give an alarm, and meanwhile, the controller adjusts the rotating speed of the motor to the target rotating speed of the motor;

wherein the content of the first and second substances,is the target speed of the motor, W_SIs the rated power of the motor, gamma is the transmission efficiency of the belt, T_SThe actual torque at which the second link is operated.

Compared with the prior art, the invention provides an intelligent control type oil pumping unit, which has the following beneficial effects: the rotating shaft is driven to rotate through the motor in a reverse rotation mode, so that the second connecting rod moves upwards, the first connecting rod hinged with the second connecting rod pushes the walking beam to move upwards, the horsehead moves downwards at the moment, the oil pumping head stretches deep into the oil well, when the sensor is in contact with the oil surface, the sensor feeds a signal back to the intelligent control cabinet, the intelligent control cabinet controls the oil pumping head to begin to pump oil, and after the oil pumping is completed, the intelligent control cabinet controls the motor to rotate positively to pull the oil pumping head out of the oil well. Therefore, the intelligent pumping unit finishes a working cycle, the sensor fixedly connected with the outer surface of the pumping head can give a starting signal to the control cabinet when contacting with the oil surface, and thus the phenomenon of empty pumping can be prevented when the oil surface is lowered and the pumping head still pumps oil at a fixed position.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a transmission shaft according to the present invention;

FIG. 3 is a schematic view of the mounting base of the present invention;

FIG. 4 is a schematic view of the motor structure of the present invention;

FIG. 5 is an elevational view of the brake clasping mechanism of the present invention;

FIG. 6 is a side view of the brake clasping mechanism of the present invention;

FIG. 7 is a partial cross-sectional view of the brake clasping mechanism of the present invention;

FIG. 8 is a view of the combination of the safety slot and the safety pin of the present invention;

FIG. 9 is a sectional view of the limiting mechanism of the brake clasping mechanism of the present invention.

In the figure: 1. a base; 2. a support; 3. spherical hinge; 4. a walking beam; 5. a donkey head; 6. a suspension rope; 7. an oil pumping head; 8. a sensor; 9. a first link; 10. a second link; 11. a balancing weight; 12. a drive shaft; 1200. a safety groove; 13. a mounting seat; 14. a belt; 15. an electric motor; 16. an intelligent control cabinet; 17. a brake clasping mechanism; 1700. a brake base; 1701. a first arc; 1702. a second arc; 1703. a connecting shaft; 1704. a third arc; 1705. an arc-shaped moving groove; 1706. connecting columns; 1707. a first screw; 1708. moving the block; 1709. a slide bar; 1710. a sliding sleeve; 1711. extruding the block; 1712. a threaded barrel; 1713. a second screw; 1714. a limiting mechanism; 1715. a holder rod; 1716. a slider; 1717. a connecting rod; 1718. a second connecting block; 1719. an arc-shaped shell; 1720. a spring; 1721. an arc-shaped sheet; 1722. a roller; 1723. a first connecting rod; 1724. a second connecting rod; 1725. a safety pin; 1726. cushion blocks; 1727. a first connection block; 1728. and (4) a mounting body.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In one embodiment: comprises a base 1, a support 2 is fixedly connected to the top of the base 1, a spherical hinge 3 is arranged at the top of the support 2, a walking beam 4 is arranged at the top of the spherical hinge 3, a horse head 5 is arranged at one end of the walking beam 4, a suspension rope 6 is arranged at the bottom of the horse head 5, an oil pumping head 7 is arranged at one end of the suspension rope 6 far away from the horse head 5, a sensor 8 is arranged on the outer surface of the oil pumping head 7, a first connecting rod 9 is arranged at one end of the walking beam 4 far away from the horse head 5, a second connecting rod 10 is arranged at one end of the first connecting rod 9, a balancing weight 11 is arranged at one end of the second connecting rod 10 close to the first connecting rod 9, a transmission shaft 12 is arranged at the other end of the second connecting rod 10, a safety slot 1200 is arranged on the transmission shaft 12, mounting seats 13 are arranged on two sides of the transmission shaft 12 in, one side that motor 15 kept away from mount pad 13 is provided with intelligent control cabinet 16, can prevent the phenomenon of empty taking out.

In one embodiment, one end of the bracket 2 is hinged with the walking beam 4 through the spherical hinge 3, the other end of the bracket 2 is fixedly connected with the base 1, and the walking beam 4 can freely swing up and down; the suspension rope 6 is a steel wire rope, one end of the suspension rope 6 is fixedly connected with the front end of the horse head 5, the other end of the suspension rope 6 is fixedly connected with the oil pumping head 7, and the suspension rope 6 drives the oil pumping head 7 to move up and down; one end of the first connecting rod 9 is hinged with one end of the walking beam 4 far away from the horse head 5, the other end of the first connecting rod 9 is hinged with one end of the second connecting rod 10, one end of the second connecting rod 10 close to the first connecting rod 9 is fixedly connected with a balancing weight 11, and the balancing weight 11 can play a role in balancing; one end of the second connecting rod 10, which is far away from the first connecting rod 9, is fixedly connected with a transmission shaft 12, the output end of the transmission shaft 12 penetrates and extends to the outside of an installation seat 13, the installation seat 13 is U-shaped, the transmission shaft 12 is movably connected with the installation seat 13, and the transmission shaft 12 can freely rotate in the installation seat 13; the motor 15 is fixedly connected with the base 1, the output end of the motor 15 is in transmission connection with the transmission shaft 12 through a belt 14, and the motor 15 is used as a power device of the transmission shaft 12; the intelligent control cabinet 16 is electrically connected with the oil pumping head 7, the intelligent control cabinet 16 is electrically connected with the sensor 8, the intelligent control cabinet 16 is electrically connected with the motor 15, the sensor 8 sends a starting signal to the intelligent control cabinet 16, the intelligent control cabinet 16 controls the oil pumping head 7 and the motor 15, and preferably, the sensor can also be a liquid level sensor and is used for sensing the height of an oil surface.

The working principle and the beneficial effects of the technical scheme are as follows: the motor 15 rotates reversely to drive the transmission shaft 12 to rotate through the belt, so that the second connecting rod 10 moves upwards, the first connecting rod 9 hinged with the second connecting rod pushes the left end of the other end of the walking beam 4 to move upwards, the horse head 5 at the right end of the cross beam 4 moves downwards at the moment, the pumping head 7 extends into the oil well, when the sensor 8 senses that the pumping head reaches the liquid level of the oil well, the sensor 8 feeds signals back to the intelligent control cabinet 16, the intelligent control cabinet 16 controls the pumping head 7 to pump oil, and after the oil pumping is completed, the intelligent control cabinet 16 controls the motor 15 to rotate forwardly to pull the pumping head 7 out of the oil well. Therefore, the intelligent pumping unit finishes a working cycle, the sensor 8 fixedly connected with the outer surface of the pumping head 7 can give a starting signal to the control cabinet when contacting with the oil surface, and therefore the phenomenon of idle pumping can be avoided when the oil surface is lowered and the pumping head 7 pumps oil at a fixed position.

In one embodiment, the mount pad 13 is provided with a brake clasping mechanism 17, the brake clasping mechanism 17 is provided with a brake base 1700, the brake base 1700 and the mount pad 13 are connected by bolts, the brake clasping mechanism 17 comprises: the brake base comprises a first arc 1701, a second arc 1702, a third arc 1704 and a connecting shaft 1703, wherein the first arc 1701 is connected to the brake base 1700, one end of the first arc 1701 is rotatably connected with the third arc 1704 through the connecting shaft 1703, the other end of the first arc 1701 is hinged with the second arc 1702, and the first arc 1701, the second arc 1702 and the third arc 1704 are connected to form a circle;

an arc-shaped moving groove 1705 is arranged on the second arc 1702, a connecting column 1706 and a first screw 1707 are arranged inside the arc-shaped moving groove 1705, a moving block 1708 is fixedly connected to both the upper and lower sections of the connecting column 1706, a driving device is arranged in the moving block 1708 and drives the moving block 1708 to move along the arc-shaped moving groove 1705, groove holes are respectively arranged on both sides of the moving block 1708, a sliding rod 1709 is arranged in the groove hole on the left side of the moving block 1708, a third arc 1704 is inserted in the groove hole on the right side of the moving block 1708, a sliding sleeve 1710 is sleeved on the sliding rod 1709, an extrusion block 1711 is fixedly connected to the left side of the sliding sleeve 1710, a threaded hole is arranged on the extrusion block 1711, the first screw 1707 penetrates through the threaded hole to be in threaded connection with the extrusion block 1711, a cushion block 1726 is fixedly connected to one side of the extrusion block 1711 close to the second arc 1702, a threaded barrel 1712 is, the thread cylinder 1712 is connected with a second screw 1713 through threads, and the second screw 1713 penetrates through the moving block 1708 and is sleeved with a third arc 1704;

the inner walls of the first arc 1701 and the second arc 1702 are fixedly connected with a limiting mechanism 1714, the limiting mechanism 1714 comprises a support rod 1715 and an arc-shaped shell 1719, the middle parts of the support rod 1715 and the arc-shaped shell 1719 are hinged, a sliding groove is arranged in the support rod 1715, a sliding block 1716 is arranged in the sliding groove, one side of the sliding block 1716 penetrates through the support rod 1715 and is fixedly connected with a first connecting block 1727, the sliding block 1716 can slide in the sliding groove, the first connecting block 1727 is hinged with a connecting rod 1717, one end, far away from the first connecting block 1727, of the connecting rod 1717 is hinged with a second connecting block 1718, one side of the second connecting block 1718 is fixedly connected with the outside of the arc-shaped shell 1719, one side, close to the support rod 1715, in the arc-shaped shell 1719 is provided with a spring 1720, the other end of the spring 1720 is connected with an arc-shaped sheet 1721, an installation body 1728 is arranged in the arc, the middle of the mounting body 1728 is connected with a first connecting rod 1723 and a second connecting rod 1724 through hinges, one side of the first connecting rod 1723 away from the mounting body 1728 is rotatably connected with a roller 1722, the roller 1722 is in contact with the inner side of the arc piece 1721, and one side of the second connecting rod 1724 away from the mounting body 1728 is fixedly connected with a safety pin 1725.

The working principle and the beneficial effects of the technical scheme are as follows: when the brake clasping mechanism 17 is installed, the brake base 1700 and the installation base 13 are fixedly connected by bolts, the second screw 1713 penetrates through the moving block 1708 and is sleeved on the third arc 1704 and is screwed down on the second screw 1713, so that the first arc 1701, the second arc 1702, the third arc 1704 and the moving block 1708 form a closed ring concentric with the transmission shaft 12, after the pumping unit finishes working and the motor 15 is turned off, the brake clasping mechanism 17 is started, the moving block 1708 moves along the arc-shaped moving groove 1705 to gradually reduce the closed ring under the driving of the driving device, so that the transmission shaft 12 is clasped, the transmission shaft 12 continues to rotate due to inertia, the rotation of the transmission shaft 12 drives the arc-shaped shell 1719 of the brake clasping mechanism 17 to swing, the arc-shaped shell 1719 swings so that the connecting rod 1717 drives the slider 1716 to slide in the sliding groove, and the slider 1716 slides in the sliding groove so that the arc-shaped shell 1719 better fits the surface of the, extrusion through transmission shaft 12 to arc piece 1721 in the arc casing 1719 makes safety pin 1725 protruding, collude in the insurance groove 1200 on the transmission shaft 12, make transmission shaft 12 stall, arc casing 1719 is equipped with spring 1720 greatly reduced the damage to transmission shaft 12 surface when arc piece 1721 and transmission shaft 12 relative slip, whole brake clasping mechanism 17 simple structure simple to operate dismouting change easily, solved the condition that traditional brake equipment leads to the brake failure because of the long-term wearing and tearing of transmission shaft simultaneously, it can stop immediately after making the beam-pumping unit finish to set up brake clasping mechanism 17, can not continue the motion because of inertia, production efficiency has still been guaranteed simultaneously, operating personnel's personal safety has been ensured.

In one embodiment, the method further comprises:

the displacement sensor is arranged on the outer surface of the oil pumping head 7 and used for detecting the displacement of the oil pumping head 7 during each work;

the pressure sensor is arranged at one end of the suspension rope 6 close to the horse head 5 and used for detecting the pressure of the contact point of the suspension rope 6 and the horse head 5 in each working process;

a rotation speed sensor provided on the motor 15 for detecting an actual rotation speed of the motor 15;

the alarm is arranged in the intelligent control cabinet 16;

the controller respectively with displacement sensor, pressure sensor, alarm and speed sensor electric connection, the controller adjusts based on displacement sensor, pressure sensor and speed sensor the rotational speed of motor 15 and the warning of control alarm include following step:

the method comprises the following steps: the controller controls the motor 15 and the oil pumping head 7 to work for N times;

and calculates the torque of the second link 10 at each operation according to the displacement sensor, the pressure sensor, and the formula (1):

T_i＝300X_i+0.236X_i(N_imax-N_imin) (1)

wherein, T_iIs the torque, X, of the second link 10 at the i-th operation_iDisplacement of the pumping head 7 at the i-th operation, N, detected by a displacement sensor_imaxThe maximum pressure N of the contact point of the suspension rope 6 and the horse head 5 detected by the pressure sensor in the ith working process of the motor_iminThe minimum pressure of a contact point between the suspension rope 6 and the horse head 5, which is detected by a pressure sensor in the ith working process of the motor, is 1-N; wherein said 300 is represented as 300 newtons (N);

step two: calculating the actual torque of the second link 10 based on the step one and the formula (2):

wherein, T_SActual torque, T, for operation of the second link_iThe torque of the second connecting rod in the ith working process;

step three: calculating a target rotation speed of the motor 15 based on the calculated actual torque of the second link 10 and equation (3):

when the detection value of the rotating speed sensor exceeds the target rotating speed threshold range of the motor 15, the controller controls the alarm to give an alarm, and meanwhile, the controller adjusts the rotating speed of the motor 15 to the target rotating speed of the motor 15;

wherein the content of the first and second substances,

is the target rotational speed, W, of the motor 15_SThe rated power of the motor 15, gamma is the transmission efficiency of the belt 14, T_SThe actual torque at which the second link 10 operates.

The working principle and the beneficial effects of the technical scheme are as follows: calculating the torque of the second connecting rod 10 in each operation according to the detection values of the displacement sensor and the pressure sensor and the formula 1, enabling the detected displacement of the sucker 7 in each operation and the pressure of the suspension rope 6 and the horsehead 5 in each operation to be more accurate and reliable by adopting the displacement sensor and the pressure sensor, calculating the actual torque of the second connecting rod 10 in each operation according to the calculated torque of the second connecting rod 10 in each operation and the formula 2, multiplying the actual torque of the second connecting rod 10 in operation by 0.6 to enable the calculated actual torque to be more practical, calculating the target rotating speed of the motor 15 according to the calculated actual torque of the second connecting rod 10 in operation and the formula 3, adding the transmission efficiency gamma of the belt 14 in calculation to enable the calculated target rotating speed of the motor 15 to be more practical, detecting the actual rotating speed of the motor by utilizing the rotating speed sensor, when the detection value of the rotating speed sensor exceeds the target rotating speed threshold range of the motor 15, the controller controls the alarm to give an alarm, and meanwhile, the controller adjusts the rotating speed of the motor 15 to the target rotating speed of the motor 15, the rotating speed of the motor 15 is detected and adjusted constantly, so that the stable work of the pumping unit is guaranteed, the working period of the pumping unit is more stable, and the working efficiency of the pumping unit is improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.