CN-224214618-U - Pumping unit dead brake device

CN224214618UCN 224214618 UCN224214618 UCN 224214618UCN-224214618-U

Abstract

The utility model belongs to the field of actuating mechanisms for brakes, and particularly relates to a dead brake device of an oil pumping unit. In order to conveniently and safely release the dead brake, the utility model provides a dead brake device of an oil pumping unit. The dead brake device of the oil pumping machine comprises a hook body, a direct-acting driving mechanism, a force application rod, a movable arm, a clamping piece and a guide rod, wherein a sliding hole is formed in one end of the hook body in the length direction, the clamping piece is located in the sliding hole and is used for clamping the dead brake shaft with the inner wall of the sliding hole, one end of the movable arm is hinged with the hook body, the other end of the movable arm is provided with a shifting fork for moving the guide rod upwards, the force application rod penetrates through a gap between the movable arm and the hook body, the direct-acting driving mechanism is used for driving the force application rod to move up and down, the guide rod is fixedly connected with the clamping piece, the guide rod is matched with the guide movement of the hook body, and a pressure spring for applying downward elasticity to the clamping piece is sleeved on the guide rod. The force application rod is driven to ascend by the direct-acting driving mechanism so as to directly release the dead brake, and the operation is convenient and safe.

Inventors

GUAN JINTAO
YANG YUCHI
MAO YONGHANG
MAO YONGFEI
WANG ZHENKE
YU JIQING

Assignees

中国石油化工股份有限公司
中国石油化工股份有限公司中原油田分公司

Dates

Publication Date: 20260508
Application Date: 20250609

Claims (10)

1. The dead brake device of the oil pumping unit comprises a hook body, wherein one end of the hook body in the length direction is provided with a trapezoidal clamping block, and the other end of the hook body is provided with a sliding hole for a dead brake shaft to pass through; the direct-acting driving mechanism comprises an output end capable of moving vertically and vertically, and the force application rod horizontally extends and is connected to the output end of the direct-acting driving mechanism; One end of the movable arm close to the trapezoidal clamping block is hinged with the hook body, the other end is provided with a shifting fork, the force application rod penetrates through a gap between the movable arm and the hook body; the clamping piece is arranged in the sliding hole, and one end of the clamping piece, which is close to the dead brake shaft, is provided with a first arc-shaped groove with an aperture matched with the outer diameter of the dead brake shaft; The hook body is provided with a guide hole, the guide rod penetrates through the guide hole and is in guide fit with the guide hole, and one end of the guide rod is fixedly connected with the clamping piece; The outer peripheral surface of the guide rod is provided with a bulge, the shifting fork is used for being matched with the bulge to lift the guide rod under the action of the force application rod, the guide rod is sleeved with a pressure spring for downwards pushing the clamping piece, the pressure spring is arranged between the clamping piece and the hole wall of the sliding hole, or the hook body comprises a pressure spring mounting beam positioned above the bulge, and the pressure spring is extruded between one side, away from the shifting fork, of the bulge and the pressure spring mounting beam.
2. The dead brake device of a pumping unit according to claim 1, wherein in the length direction of the hook body, the inner wall surface of the sliding hole close to the trapezoidal clamping block or the groove wall of the first arc-shaped groove close to the trapezoidal clamping block forms an upper unlocking limit part, the inner wall surface of the sliding hole far away from the trapezoidal clamping block or the groove wall of the first arc-shaped groove far away from the trapezoidal clamping block forms a lower unlocking limit part, and each unlocking limit part meets the requirement that when the dead brake shaft is in stop fit with the corresponding unlocking limit part, the trapezoidal clamping block is unlocked with a dovetail groove of the dead brake wheel.
3. The dead brake device of a pumping unit according to claim 1 or 2, wherein the hook body is provided with a mounting groove, a lock tongue matched with a shifting fork is arranged in the mounting groove, a return spring is arranged between the lock tongue and the groove bottom wall of the mounting groove, and the shifting fork is provided with an unlocking station positioned below the lock tongue and a locking station positioned above the lock tongue and matched with the lock tongue in an up-down direction.
4. The dead brake device of the pumping unit of claim 3, wherein the hook body is connected with a hinge shaft, the movable arm is provided with a hinge hole, the hinge shaft penetrates through the hinge hole to realize the hinge of the hook body and the movable arm, the hinge hole is a long hole extending along the length direction of the hook body, the length of the long hole is satisfied that the shifting fork is provided with the unlocking station and the locking station when the hinge shaft is positioned at one end of the long hole close to the trapezoidal clamping block, and the lock tongue is unlocked with the shifting fork when the hinge shaft is positioned at one end of the long hole far away from the trapezoidal clamping block.
5. The oil pumping machine dead brake apparatus of claim 1 or 2, wherein the slide hole is a rectangular slide hole.
6. The dead brake device of claim 5, wherein the wall of the slide hole is provided with a second arcuate slot, and the wall of the second arcuate slot is adapted to cooperate with the wall of the first arcuate slot to retain the dead brake shaft.
7. The dead brake device of a pumping unit according to claim 1 or 2, wherein a groove is formed in a side wall of the movable arm, which is close to one side of the force application rod, and the force application rod penetrates through a gap between a wall of the groove and the hook body.
8. The pumping unit dead brake device according to claim 1 or 2, wherein one end of the guide rod is provided with external threads, the clamping member is provided with corresponding threaded holes, and the guide rod is in threaded connection with the clamping member.
9. The pumping unit dead brake apparatus of claim 1 or 2, wherein the clamping member is a clamping block.
10. The dead brake apparatus of claim 1 or 2, wherein the direct drive mechanism is a linear motor for mounting on a reduction gearbox of the pumping unit.

Description

Pumping unit dead brake device Technical Field The utility model belongs to the field of actuating mechanisms for brakes, and particularly relates to a dead brake device of an oil pumping unit. Background When the beam pumping unit is overhauled, the beam pumping unit must be stopped for braking, the dead braking safety hook of the beam pumping unit falls into the dovetail groove of the dead braking wheel, and when the beam pumping unit slides, the dead braking safety hook of the beam pumping unit and the dead braking wheel form rigid braking and lock the beam pumping unit, so that no safety accident occurs during maintenance. For example, chinese patent No. CN113309802B, publication No. 2024.09.13 discloses a self-unlocking safety hook for a pumping unit, which includes a hook body and a limit screw. One end of the hook body is provided with a trapezoid clamping block which falls into a dovetail groove of the dead brake wheel when dead brake is performed, the other end of the hook body is provided with a sliding hole for the dead brake shaft to pass through, the dead brake shaft is fixedly connected to a reduction gearbox of the pumping unit, the sliding hole comprises a horizontal unthreaded hole and a semicircular hole, the semicircular hole is connected to the lower end of the middle part of the horizontal unthreaded hole, and a limit screw is in threaded connection with the hook body and forms a jackscrew for jacking the dead brake shaft. When dead braking, trapezoidal fixture block falls into the dovetail of dead wheel of stopping, and dead axle of stopping passes the slide hole and partially is located the semicircle orifice, and stop screw and semicircle orifice's cell wall clamp jointly dead axle of stopping. When the dead brake is released, the limit screw is reversely screwed to separate the limit screw from the dead brake shaft, the hook body is rocked up and down to enable the dead brake shaft to be separated from the semicircular hole and enter the horizontal unthreaded hole, and finally, the hook body is horizontally moved to enable a sufficient gap to exist between the trapezoidal clamping block and the groove side wall of the dovetail groove, so that the trapezoidal clamping block is unlocked from the dovetail groove, and the trapezoidal clamping block can be moved out of the dovetail groove to realize the releasing operation of the dead brake. When the hook body is horizontally moved, the dead brake shaft is fixed, so that the relative position of the dead brake shaft and the horizontal light hole is changed, and the horizontal light hole is used for avoiding interference between the hook body and the dead brake shaft. To the dead insurance couple of stopping of above-mentioned beam-pumping unit, at the in-process of stopping that removes, the staff needs to ascend to the little platform at beam-pumping unit top to accomplish on the little platform and revolve the operation of twisting the stop screw and remove the couple body, on the one hand, the operation is comparatively troublesome, on the other hand, has the risk that the staff falls from the eminence, and danger coefficient is high. Disclosure of utility model The utility model aims to provide a dead brake device of an oil pumping unit, which aims to solve the technical problems of troublesome operation and high danger coefficient caused by the need of climbing operation of staff when dead brake is released. In order to achieve the above purpose, the technical scheme of the dead brake device of the pumping unit provided by the utility model is as follows: The dead brake device of the oil pumping unit comprises a hook body, wherein one end of the hook body in the length direction is provided with a trapezoid clamping block, the other end of the hook body is provided with a sliding hole for a dead brake shaft to pass through, and the dead brake device further comprises a direct-acting driving mechanism, a force application rod, a movable arm, a clamping piece and a guide rod; the direct-acting driving mechanism comprises an output end capable of moving vertically and vertically, and the force application rod horizontally extends and is connected to the output end of the direct-acting driving mechanism; One end of the movable arm close to the trapezoidal clamping block is hinged with the hook body, the other end is provided with a shifting fork, the force application rod penetrates through a gap between the movable arm and the hook body; the clamping piece is arranged in the sliding hole, and one end of the clamping piece, which is close to the dead brake shaft, is provided with a first arc-shaped groove with an aperture matched with the outer diameter of the dead brake shaft; The hook body is provided with a guide hole, the guide rod penetrates through the guide hole and is in guide fit with the guide hole, and one end of the guide rod is fixedly connected with the clamping piece; The outer peripheral surface of the guide rod is provi