CN215634562U - Power-off locking device capable of preventing oil pumping unit from sliding - Google Patents

Abstract

The utility model relates to a power-off locking device capable of preventing an oil pumping unit from sliding, which comprises a brake arm, wherein the upper end of the brake arm is provided with a brake hook capable of locking a brake hub, the lower end of the brake arm is hinged on a rotating shaft, the middle part of the brake arm is hinged with an operating arm hinge hole at the left end of an operating arm through an operating arm pin shaft, the right end of the operating arm is inserted into a fixed shell through hole at the left end of a fixed shell extending rightwards along the axis, the middle part of the top wall of the fixed shell through hole is provided with a fixed shell long circular groove extending leftwards and rightwards, and the middle part of the operating arm is provided with an operating locking block protruding forwards; the center of the right end face of the control arm is provided with a control arm center rod extending rightwards, a control arm spring is sleeved on the periphery of the control arm center rod, the right end of the control arm spring is supported on a spring seat, the right end of the control arm center rod extends out of a center hole of the spring seat, and the outer wall of the spring seat is fixed on the outer wall of the through hole of the fixed shell through a spring seat pin. The device can lock the brake when the power is off, thereby avoiding the occurrence of accidents.

Description

Power-off locking device capable of preventing oil pumping unit from sliding

Technical Field

The utility model relates to a beam-pumping unit, in particular to a power-off locking device capable of preventing the beam-pumping unit from sliding, and belongs to the technical field of safety devices of the beam-pumping unit.

Background

The pumping unit has the requirement of safe operation regulations, and the pumping unit brake must be locked when the pumping unit is maintained and enters a pumping unit bottom plate and the like. At present, after the power is off, an operator manually pulls the brake, rotates the brake arm, and embeds the brake hook into the brake groove of the brake hub to realize the shutdown and the brake of the pumping unit.

When the operator does not pull or lock the brake according to the rule, or is influenced by underground back pressure and other vibration, the pumping unit can rotate when the load of the pumping unit changes, and the crank or other rotating parts easily bring personal injury accidents to the operator.

Therefore, the pumping unit in the prior art has no alarm to remind when an operator does not operate according to regulations, operates against regulations, stops and does not brake or the brake is not fastened. In addition, under the condition that the brake is not locked manually, the oil pumping unit cannot be powered off automatically and the brake is locked, so that serious personal equipment injury accidents are easily caused, and great potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the problems in the prior art and provide a power-off locking device capable of preventing a pumping unit from sliding, so that even if illegal operation of personnel occurs, timely alarming and brake locking can be ensured as long as power is off, thereby avoiding accidents and improving the safety of operation of the pumping unit.

In order to solve the technical problems, the power-off locking device capable of preventing the oil pumping unit from slipping comprises a brake arm, wherein a brake hook capable of locking a brake hub is arranged at the upper end of the brake arm, the lower end of the brake arm is hinged to a rotating shaft, the middle of the brake arm is hinged to an operating arm hinge hole at the left end of the operating arm through a brake arm connecting hole and an operating arm pin shaft, the right end of the operating arm is inserted into a fixed shell through hole extending rightwards along the axis at the left end of a fixed shell, a fixed shell long circular groove extending leftwards and rightwards is arranged in the middle of the top wall of the fixed shell through hole, and an operating locking block protruding forwards is arranged in the middle of the operating arm; the right end face center of the control arm is provided with a control arm center rod extending rightwards, a control arm spring is sleeved on the periphery of the control arm center rod, the right end of the control arm spring is supported on a spring seat, the right end of the control arm center rod extends out of a center hole of the spring seat, and the outer wall of the spring seat is fixed on the outer wall of the through hole of the fixed shell through a spring seat pin.

As an improvement of the utility model, a floating block is supported at the top of the front side of the fixed shell, a floating arm extending leftwards is connected to the left end face of the floating block, a long circular groove of the floating arm extending leftwards and rightwards is arranged along the axis of the floating arm, and the top of the front side of the operating lock block is embedded in the long circular groove of the floating arm; the brake device is characterized in that a slider screw hole with an opening at the right end is formed in the axis of the slider, a screw rod is screwed in the slider screw hole, the right end of the screw rod is connected with the output end of a brake gearbox, the input end of the brake gearbox is controlled by a direct current motor, the brake gearbox and the direct current motor are fixed on a bottom plate, and the bottom plate is connected with the bottom of the rear side of the fixed shell into a whole.

As a further improvement of the utility model, a fixed seat is fixed on the upper side of the middle part of the fixed shell, the left end of the fixed seat is fixedly connected with an upright rod extending upwards, the middle section of the upright rod is hinged with a lever through a lever pin shaft, the right end of the lever is hinged with a tension spring, the lower end of the tension spring is hinged with the right end of the fixed seat, the left end of the lever is connected with an insertion rod extending downwards, and the lower end of the insertion rod is inserted into the middle section of the long circular groove of the floating arm; the upper end of pole setting is equipped with the electromagnet mounting bracket that extends right, the downside of electromagnet mounting bracket is fixed with the electro-magnet, the electro-magnet is located the right-hand member upside of lever.

Compared with the prior art, the utility model has the following beneficial effects: the utility model changes manual brake fastening into automatic brake when the vehicle is stopped, thereby avoiding personal injury accidents caused by forgetting operation or illegal operation of personnel. Meanwhile, under the condition of power failure and no brake locking during shutdown, audible and visual alarm is carried out until hidden dangers are eliminated, and an operator is reminded that the operator cannot enter a dangerous area. Even if the operation of personnel breaks rules and regulations, as long as the power is cut off, the alarm and the brake can be guaranteed to be timely alarmed and locked, so that the accident is avoided, and the operation safety of the oil pumping unit is improved.

Drawings

The utility model will be described in further detail with reference to the following drawings and detailed description, which are provided for reference and illustration purposes only and are not intended to limit the utility model.

Fig. 1 is a front view of a brake hub part of a pumping unit.

FIG. 2 is a front view of the first state of the brake operating mechanism of the present invention.

FIG. 3 is a bottom view of the second state of the brake operating mechanism of the present invention.

Fig. 4 is a front view of the stationary case and the base plate of the present invention.

FIG. 5 is a view showing the construction of the manipulator arm according to the present invention.

FIG. 6 is an enlarged view of the electromagnet and plunger of the present invention.

Fig. 7 is an electrical schematic diagram of the main circuit and the control circuit of the motor of the pumping unit.

In the figure: 1. a brake hub; 1a, a brake groove; 2. a brake arm; 2a, a brake hook; 2b, connecting holes of the brake arms; 3. a rotating shaft; 4. an operating arm; 4a, operating a locking block; 4b, operating the center rod of the arm; 4c, a control arm hinge hole; 5. an operating arm spring; 6. a spring seat; 7. a stationary case; 7a, fixing a long circular groove of the shell; 8. a slider; a floating arm; 8b, a long circular groove of the floating arm; 8c, floating block screw holes; 9. a brake gear box; 10. a screw; 11. a fixed seat; 12. erecting a rod; 12a, an electromagnet mounting rack; 13. a lever; 13a, inserting a rod; 13b, a lever pin shaft; 14. a tension spring; 15. a base plate; 16. an electromagnet; 17. a charge controller; 18. an audible and visual alarm; m1, a motor of the oil pumping machine; m2, a direct current motor; QA. start the button; TA. stop button; KC. main contactor.

Detailed Description

In the following description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not mean that the apparatus must have a specific orientation.

As shown in fig. 1 to 6, the power-off locking device capable of preventing the oil pumping unit from slipping comprises a brake hub 1 mounted on an input shaft of a main speed reducer, brake grooves 1a are uniformly distributed on the circumference of the brake hub 1, a brake arm 2 is arranged on the right side of the brake hub 1, a brake hook 2a capable of being embedded into the brake grooves 1a is arranged at the upper end of the brake arm 2, and the brake hook 2a is positioned above the central horizontal plane of the brake hub 1. The lower end of the brake arm 2 is hinged on the rotating shaft 3, the axis of the rotating shaft 3 is positioned below the central horizontal plane of the brake hub 1 and is fixed on the middle shaft end cover of the main speed reducer, and the middle part of the brake arm 2 is connected with the brake control mechanism through the brake arm connecting hole 2b.

The brake control mechanism comprises a control arm 4 and a fixed shell 7, the left end of the control arm 4 is provided with a control arm hinge hole 4c, and the control arm hinge hole 4c is connected with the brake arm connecting hole 2b through a control arm pin shaft; the fixed shell 7 is provided with a fixed shell through hole extending along the left-right direction, the middle of the top wall of the fixed shell through hole is provided with a fixed shell long circular groove 7a extending along the left-right direction, the right end of the operating arm 4 is inserted into the fixed shell through hole, and the middle of the operating arm 4 is provided with an operating locking block 4a protruding forwards.

The center of the right end face of the control arm 4 is provided with a control arm center rod 4b extending rightwards, a control arm spring 5 is sleeved on the periphery of the control arm center rod 4b, the right end of the control arm spring 5 is supported on a spring seat 6, the right end of the control arm center rod 4b extends out of a center hole of the spring seat 6, and the outer wall of the spring seat 6 is fixed on the outer wall of the through hole of the fixed shell through a spring seat pin.

The top of the front side of the fixed shell 7 is supported with a floating block 8, a floating block screw hole 8c with an opening at the right end is arranged along the axis of the floating block 8, a screw rod 10 is screwed in the floating block screw hole 8c, the right end of the screw rod 10 is connected with the output end of a brake gearbox 9, the input end of the brake gearbox 9 is controlled by a direct current motor M2, the brake gearbox 9 and a direct current motor M2 are fixed on a bottom plate 15, and the bottom plate 15 is connected with the bottom of the rear side of the fixed shell 7 into a whole; the left end face of the floating block 8 is connected with a floating arm 8a extending leftwards, a long circular groove 8b of the floating arm extending leftwards and rightwards is arranged along the axis of the floating arm 8a, and the top of the front side of the control lock block 4a is embedded in the long circular groove 8b of the floating arm.

A fixed seat 11 is fixed on the upper side of the middle part of the fixed shell 7, an upright rod 12 extending upwards is fixedly connected to the left end of the fixed seat 11, a lever 13 is hinged to the middle section of the upright rod 12 through a lever pin shaft 13b, a tension spring 14 is hinged to the right end of the lever 13, the lower end of the tension spring 14 is hinged to the right end of the fixed seat 11, an insertion rod 13a extending downwards is connected to the left end of the lever 13, and the lower end of the insertion rod 13a is inserted into the middle section of the long circular groove 8b of the floating arm; an electromagnet mounting rack 12a extending rightwards is arranged at the upper end of the vertical rod 12, an electromagnet 16 is fixed at the lower side of the electromagnet mounting rack 12a, and the electromagnet 16 is positioned at the upper side of the right end of the lever 13.

When the oil pumping unit is powered off: the floating arm 8a is at the left limit position, the operating arm 4 is at the left limit position under the tension of the operating arm spring 5, the operating locking piece 4a is positioned at the leftmost end of the long circular groove 8b of the floating arm, the brake hook 2a of the brake arm 2 is embedded into the brake groove 1a of the brake hub 1, and the inserted link 13a is withdrawn upwards and separated from the long circular groove 8b of the floating arm.

When the pumping unit is started: the floating arm 8a translates rightwards, the operating locking block 4a is pulled to the right side, the right end of the operating arm 4 compresses the operating arm spring 5 to store energy, the left end of the operating arm 4 pulls the upper part of the brake arm 2 to swing rightwards, the brake hook 2a is separated from the brake groove 1a of the brake hub 1, and braking is released; when the operation locking piece 4a reaches the rightmost position, the insertion rod 13a is inserted and blocked at the left side of the operation locking piece 4a, then the floating arm 8a translates leftwards until the floating arm 8a reaches the left limit position, and then the pumping unit motor M1 is started.

When the pumping unit is stopped: the inserted link 13a swings upwards to be separated from the long circular groove 8b of the floating arm, the control locking block 4a is ejected leftwards under the tension of the control arm spring 5 to reach the leftmost side of the long circular groove 8b of the floating arm, the control arm 4 synchronously translates leftwards, the brake hook 2a on the upper part of the brake arm 2 is embedded into the brake groove 1a of the brake hub 1, and the brake hub 1 is braked.

The fixed case 7 is mounted with position switches SB1, SB2, and SB3, the position switch SB1 detects the leftmost position of the floating arm 8a, the position switch SB2 detects the rightmost position of the operating lock piece 4a, and the position switch SB3 abuts on the right side of the position switch SB 1.

As shown in fig. 7, a main contact of a main contactor KC is connected in series in a main circuit of a pumping unit motor M1, a control circuit of the pumping unit motor M1 includes a stop button TA, a start button QA, a normally open contact of a position switch SB1, a normally open contact of a position switch SB2, and a coil of the main contactor KC, which are connected in series in sequence, and a first normally open contact KC-1 of the main contactor is connected in parallel with the start button QA.

The switching power supply converts alternating-current phase voltage into a +12V direct-current power supply, and a fourth normally-open contact KC-4 of the main contactor is connected with a coil of the electromagnet in series and then connected between the +12V direct-current power supplies.

The +12V direct-current power supply charges the storage battery through the charging controller, and the second normally-closed contact KC-2 of the main contactor, the normally-closed contact of the position switch SB3 and the audible and visual alarm are connected in series at two ends of the storage battery.

When the oil pumping unit is powered off: the floating block 8 and the floating arm 8a are located at the left limit position, the position of the floating arm 8a corresponds to the detection position of the position switch SB1, the tension of the control arm spring 5 enables the control lock block 4a to be located at the leftmost end of the long circular groove 8b of the floating arm, the control arm 4 is located at the left limit position, the brake hook 2a of the brake arm 2 is embedded into the brake groove 1a of the brake hub 1, at the moment, the coil of the main contactor KC is in a power-off state, the fourth normally-open contact KC-4 of the main contactor KC is disconnected, the electromagnet 16 is powered off, the right end of the lever 13 swings downwards under the tension of the tension spring 14, the insert rod 13a at the left end of the lever 13 swings upwards and is separated from the long circular groove 8b of the floating arm, and space is provided for the right movement of the control lock block 4a.

When the pumping unit is started: the switch power supply of the control circuit is turned on, the first normally open contact of the position switch SB1 is closed, the normally closed contact of the position switch SB1 is opened, the direct current motor M2 rotates forwards, the control screw 10 of the brake gearbox 9 rotates rightwards in the floating block screw hole 8c to drive the floating block 8 and the floating arm 8a to translate rightwards, the control lock block 4a embedded in the long circular groove 8b of the floating arm is pulled to the right side, the right end of the control arm 4 compresses the control arm spring 5 to store energy, the left end of the control arm 4 pulls the upper part of the brake arm 2 to swing rightwards, the brake hook 2a is separated from the brake groove 1a of the brake hub 1, and braking is released.

When the lock piece 4a is operated to reach the position switch SB2, the direct current motor M2 stops the forward rotation; meanwhile, the coil of the electromagnet 16 is electrified to generate suction force, the right end of the lever 13 overcomes the tension of the tension spring 14 to swing upwards under the action of the suction force of the electromagnet 16, and the insertion rod 13a at the left end of the lever 13 swings downwards, is inserted into the middle section of the long circular groove 8b of the floating arm and is blocked at the left side of the operation locking block 4a.

Then the direct current motor M2 rotates reversely, the brake gearbox 9 operates the screw 10 to rotate left in the floating block screw hole 8c, the floating block 8 and the floating arm 8a are driven to translate left until the floating arm 8a reaches the left limit position, the normally closed contact of the position switch SB1 is disconnected, and the direct current motor M2 stops rotating reversely; the operation lock piece 4a fitted in the float arm slot 8b stays at the right position by being stopped by the plunger 13a.

Only when the floating arm 8a is located at the left limit position, the second normally open contact of the position switch SB1 is closed; when the locking block 4a is operated to be located at the rightmost position, the second normally-open contact of the position switch SB2 is closed, the coil of the main contactor KC can be electrified, the pumping unit is prevented from being started before the brake arm 2 is unlocked, and safety is ensured. At this time, the start button QA is pressed, the first normally closed contact KC-1 is closed and self-protected, the coil of the main contactor KC is electrified, and the main contact is closed to start the motor M1 of the pumping unit.

When the coil of the main contactor KC is electrified, the fourth normally open contact KC-4 of the main contactor KC is closed, so that the coil of the electromagnet 16 is electrified, and the inserted rod 13a is kept in a downward insertion state.

When the pumping unit is stopped: the stop button TA is pressed down to ensure that the coil of the main contactor KC is de-energized, the fourth normally open contact KC-4 is disconnected, the electromagnet 16 is de-energized, the right end of the lever 13 swings downwards under the action of the tension spring 14, the inserting rod 13a at the left end of the lever 13 swings upwards to be separated from the long circular groove 8b of the floating arm, the control locking block 4a pops out leftwards under the tension action of the control arm spring 5 to reach the leftmost side of the long circular groove 8b of the floating arm, the control arm 4 synchronously translates leftwards, the upper part of the control brake arm 2 swings leftwards around the axis of the rotating shaft 3 to ensure that the brake hook 2a is embedded into the brake groove 1a of the brake hub 1, and the brake hub 1 is braked.

In the braking process, the second normally closed contact KC-2 of the main contactor KC is in a closed state, and the audible and visual alarm 18 is powered on to give an alarm; if the manipulation arm spring 5 is caught so that the manipulation lock piece 4a is not ejected leftward and reaches the position where the position switch SB3 is located, the alarm is not released; until the actuating lock piece 4a reaches the position of the position switch SB3, the normally closed contact of the position switch SB3 is opened and the alarm is not released when the brake hook 2a of the brake arm 2 has been inserted into the brake groove 1a of the brake hub 1.

The utility model automatically brakes when the vehicle is stopped, thereby avoiding personal injury accidents caused by forgetting operation or illegal operation of personnel. Meanwhile, under the condition of power failure and no brake locking during shutdown, audible and visual alarm is carried out until hidden dangers are eliminated, and an operator is reminded that the operator cannot enter a dangerous area.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention. In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention. Technical features of the present invention which are not described may be implemented by or using the prior art, and will not be described herein.

Claims (3)

1. The utility model provides a can prevent outage locking device of beam-pumping unit swift current car, includes the brake arm, the upper end of brake arm is equipped with the car coupler of stopping of lockable brake hub, its characterized in that: the lower end of the brake arm is hinged to the rotating shaft, the middle of the brake arm is hinged to an operating arm hinge hole at the left end of the operating arm through a brake arm connecting hole and an operating arm pin shaft, the right end of the operating arm is inserted into a fixed shell through hole extending rightwards along the axis at the left end of the fixed shell, a fixed shell long circular groove extending leftwards and rightwards is formed in the middle of the top wall of the fixed shell through hole, and an operating locking block protruding forwards is arranged in the middle of the operating arm; the right end face center of the control arm is provided with a control arm center rod extending rightwards, a control arm spring is sleeved on the periphery of the control arm center rod, the right end of the control arm spring is supported on a spring seat, the right end of the control arm center rod extends out of a center hole of the spring seat, and the outer wall of the spring seat is fixed on the outer wall of the through hole of the fixed shell through a spring seat pin.

2. The power-off locking device capable of preventing the oil pumping unit from rolling down as claimed in claim 1, wherein: the top of the front side of the fixed shell is supported with a floating block, the left end surface of the floating block is connected with a floating arm extending leftwards, a long circular groove of the floating arm extending leftwards and rightwards is arranged along the axis of the floating arm, and the top of the front side of the operating lock block is embedded in the long circular groove of the floating arm; the brake device is characterized in that a slider screw hole with an opening at the right end is formed in the axis of the slider, a screw rod is screwed in the slider screw hole, the right end of the screw rod is connected with the output end of a brake gearbox, the input end of the brake gearbox is controlled by a direct current motor, the brake gearbox and the direct current motor are fixed on a bottom plate, and the bottom plate is connected with the bottom of the rear side of the fixed shell into a whole.

3. The power-off locking device capable of preventing the oil pumping unit from rolling down as claimed in claim 2, wherein: a fixed seat is fixed on the upper side of the middle part of the fixed shell, an upright rod extending upwards is fixedly connected to the left end of the fixed seat, a lever is hinged to the middle section of the upright rod through a lever pin shaft, a tension spring is hinged to the right end of the lever, the lower end of the tension spring is hinged to the right end of the fixed seat, an inserted rod extending downwards is connected to the left end of the lever, and the lower end of the inserted rod is inserted into the middle section of the long circular groove of the floating arm; the upper end of pole setting is equipped with the electromagnet mounting bracket that extends right, the downside of electromagnet mounting bracket is fixed with the electro-magnet, the electro-magnet is located the right-hand member upside of lever.

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