Brake locking device of pumping unit
By designing a limit operating mechanism and a locking mechanism in the brake device of the oil pump, the safety hook groove detachment caused by the brake device during maintenance is solved, which improves the stability and safety of the device and ensures the safe operation of the equipment.
Patent Information
- Application Number
- CN202311817045.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2025-06-27
AI Technical Summary
During the maintenance process, the existing oil pump brake devices are prone to disconnection of the safety hook due to accidental touch or wrong operating sequence, causing the equipment to resume rotation and causing dangerous accidents; at the same time, the harsh working environment causes the pull rod and the safety hook to fall off, affecting production stability.
A pumping brake locking device including a brake control mechanism, a transmission mechanism and a brake main mechanism is designed. By providing a limit operating mechanism on the brake operating handle and the safety hook operating handle, the operating sequence and stroke position are defined, and a locking mechanism is provided to fix the position of the safety hook operating handle to prevent accidents of accidentally touching and groove disconnection.
It effectively prevents safety hook groove detachment accidents caused by wrong operating sequence and mistouching, improves the stability and safety of the device, extends the service life of the device, and ensures the safe operation of the oil pump equipment.
Smart Images
Figure CN120212173A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of pumping unit equipment, and in particular to a braking and locking device for a pumping unit. Background Art
[0002] The beam pumping unit belongs to a common oil production machine and is widely used in oil fields. When the pumping unit stops pumping for maintenance, a braking device is required to brake the pumping unit. The braking device usually used is a jaw type braking device to ensure the personal safety of oil production workers and maintenance personnel during the maintenance process. In the prior art, since the pumping unit is generally set up in relatively remote areas with complex working environments and rugged terrains, during the construction process, due to reasons such as accidental touch, the braking operation lever moves, causing the safety hook in the locked state to get out of the groove, resulting in the restoration of rotation of the pumping unit equipment during maintenance, which is extremely likely to cause dangerous accidents; during the maintenance process, when operating the braking device, the operating sequence of the pull rod is often incorrect, resulting in wear of the device; at the same time, due to the harsh working environment, during long-term operation, the pull rod in the braking device is easily separated from the safety hook, causing the safety hook to act and the pumping unit to stop, greatly affecting the production stability. Therefore, in view of the above deficiencies, a braking and locking device for a pumping unit is proposed. Summary of the Invention
[0003] (I) Technical Problems to be Solved Aiming at the deficiencies of the prior art, the present invention provides a braking and locking device for a pumping unit, which solves the problems that due to reasons such as accidental touch, the operating lever moves, causing the safety hook in the locked state to get out of the groove, resulting in the restoration of rotation of the pumping unit equipment during maintenance, causing dangerous accidents; during the maintenance process, when operating the braking device, the operating sequence of the pull rod is often incorrect, resulting in impact damage to the device components or jamming and inability to release the locking hook; during long-term operation, the pull rod in the braking device is easily separated from the safety hook, causing the safety hook to act.
[0004] (II) Technical Solutions To solve the above problems, the present invention provides a braking and locking device for a pumping unit, including: A braking control mechanism, a transmission mechanism, and a braking main body mechanism. The transmission mechanism is connected to both the braking control mechanism and the braking main body mechanism at the same time. The braking control mechanism controls the braking main body mechanism to perform a braking operation on the pumping unit through the transmission mechanism; The brake control mechanism includes a brake controller and a safety hook controller which have the same structure and are arranged in parallel; the brake controller includes a lock tooth fixing plate placed vertically, with a lock tooth at the top end, a handle rotating shaft at the bottom end, a brake operation handle on the lock tooth fixing plate, the bottom end of the brake operation handle is connected to the handle rotating shaft and moves along the direction of the lock tooth fixing plate, a lock block is provided at the bottom of the brake operation handle, and when the lock block drops, it cooperates with the lock tooth to fix the position of the brake operation handle; the safety hook controller has the same structure as the brake controller, and the brake operation handle is replaced by a safety hook operation handle on the lock tooth fixing plate of the brake controller; a fixed base is provided at the bottom of the brake control mechanism, and the two ends of the fixed base are respectively connected to the bottom ends of the two lock tooth fixing plates; A limit operation mechanism is provided on the brake control mechanism to limit the strokes of the brake operation handle and the safety hook operation handle, so that in the brake operation, the safety hook operation handle cannot act prior to the brake operation handle, and in the resume operation, the brake operation handle cannot act prior to the safety hook operation handle; a locking mechanism is provided inside the brake control mechanism to fix the position of the safety hook operation handle; A return spring is provided on the brake main body mechanism, one end of the return spring is connected to the safety hook, and the other end is fixed on the pumping unit. When the brake main body mechanism is separated from the transmission mechanism, the return spring pulls the safety hook tightly at the other end to prevent the safety hook from cooperating with the locking slot to lock the device and maintain the running state of the device.
[0005] Preferably, the limit mechanism includes a limit tenon and a limit stop bar. The limit tenon is installed at the end of the lock tooth inside the brake controller, and the height of the limit tenon is higher than that of the lock tooth. When the lock block on the brake operation handle is not fully lifted, there is an overlap in height between the limit tenon and the lock block, and the brake operation handle is limited by blocking the lock block; the limit stop bar is installed on the front surface of the safety hook operation handle and extends horizontally in front of the brake operation handle. During the brake operation and the start operation, the limit stop bar restricts the operation sequence of the brake operation handle and the safety hook operation handle.
[0006] Preferably, the locking mechanism includes a bolt fixed shaft, a sliding shaft sleeve, an adjusting screw, a movable latch and a fixed latch; the bolt fixed shaft is horizontal, and the two ends are respectively connected to the bottom ends of the two lock tooth fixing plates. A fixed latch is provided on the rear side surface of the limit stop bar. One end of the adjusting screw is provided with a sliding shaft sleeve installed on the bolt fixed shaft, and the other end is provided with a movable latch. When the movable latch comes into contact and cooperation with the fixed latch, the positions of the limit stop bar and the safety hook operation handle are fixed by adding a padlock.
[0007] Preferably, a padlock hole penetrating left and right is provided on the lock tooth fixing plate of the brake control mechanism near the limit tenon, and a padlock installed on the padlock hole can cooperate with the limit mechanism to fix the positions of the brake safety handle and the safety hook operation handle.
[0008] Preferably, the transmission mechanism includes a brake cross tie rod, a safety hook cross tie rod, and a corner base. The corner base is provided with a coaxial corner adapter with a horizontal direction. At both ends of the coaxial corner adapter, there are respectively provided brake connecting members and safety hook connecting members in the shape of the same bent shape. One end of the safety hook cross tie rod is connected to the safety hook operating handle, and the other end is connected to one end of the safety hook connecting member. One end of the brake cross tie rod is connected to the brake operating handle, and the other end is connected to one end of the brake connecting member. The other end of the brake connecting member is provided with a brake vertical tie rod with a vertically upward direction, and the other end of the safety hook connecting member is provided with a safety hook vertical tie rod with a vertically upward direction.
[0009] Preferably, vertical tie rod adjusting screws are respectively provided on the safety hook vertical tie rod and the brake vertical tie rod, and horizontal tie rod adjusting screws are respectively provided on the safety hook cross tie rod and the brake cross tie rod.
[0010] Preferably, the brake main body mechanism includes a brake hub installed on the pumping unit equipment. Outside the brake hub, there are two semi-circular brake shoes with a radius slightly larger than the brake hub. The two brake shoes are buckled into a circle, and the top ends are movably connected by a safety shaft. The other end is provided with a downward protruding boss. Between the two bosses, a clamping bolt passes through. One end of the clamping bolt is fixed, and the other end is provided with a cam-shaped brake rocker arm. The other end of the brake rocker arm is connected to the brake vertical connecting rod. When the brake vertical connecting rod is pulled down, it drives the brake rocker arm to tightly press the brake shoes to clamp the brake hub for braking. A locking slot is provided on the brake hub, and a safety hook is provided on the safety shaft. The safety hook and the locking slot are in shape fit. One end of the safety hook is connected to the safety hook vertical tie rod. When the safety hook vertical tie rod is pulled down, the safety hook enters the locking slot to lock the state of the pumping unit.
[0011] Preferably, a brake operating tie rod and a safety hook operating tie rod are respectively provided on the brake operating handle and the safety hook operating handle. Spring tie rods are respectively provided below the brake operating tie rod and the safety hook operating tie rod and are connected to the corresponding lock blocks. When the brake operating tie rod or the safety hook operating tie rod is pressed, the corresponding lock block is lifted.
[0012] (III) Beneficial Effects The braking and locking device for a pumping unit provided by the present invention limits the stroke positions and operating sequences of the brake operating handle and the safety hook operating handle by providing a limit operating mechanism on the brake operating handle and the safety hook operating handle, preventing incorrect operating sequences during the working process. At the same time, by providing a locking mechanism to fix the position of the safety operating handle, it prevents the occurrence of safety hook out-of-slot accidents caused by accidental touch, improving the stability and safety of the device. At the same time, when the safety hook vertical connecting rod falls off, the protection device maintains the position and state of the safety hook, preventing the situation that the safety hook suddenly drops during the operation of the device, resulting in the shutdown and damage of the pumping unit, and extending the service life of the device. Brief Description of the Drawings
[0013] Figure 1 This is a schematic structural diagram of the braking and locking device for a pumping unit of the present invention; Figure 2 This is a schematic structural diagram of the braking control mechanism of the braking and locking device for a pumping unit of the present invention.
[0014] Among them, 1. Braking operation handle; 2. Braking operation pull rod; 3. Safety hook operation handle; 4. Safety hook operation pull rod; 5. Limit stop bar; 6. Limit projection; 7. Lock tooth; 8. Spring pull rod; 9. Lock block; 10. Lock tooth fixing plate; 11. Fixed base; 12. Handle rotating shaft; 13. Braking cross pull rod; 14. Safety hook cross pull rod; 15. Cross pull rod adjustment screw; 16. Coaxial angle converter; 17. First connecting pin shaft; 18. Braking vertical pull rod; 19. Vertical pull rod adjustment screw; 20. Safety hook vertical pull rod; 21. Second connecting pin shaft; 22. Safety hook; 23. Locking card slot; 24. Safety shaft; 25. Return spring; 26. Braking hub; 27. Brake shoe; 28. Brake rocker arm; 29. Pin fixing shaft; 30. Sliding shaft sleeve; 31. Adjusting screw rod; 32. Movable pin buckle; 33. Fixed pin buckle. Embodiment
[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0016] In the description of the present invention, it is necessary to understand that the orientation or positional relationship indicated by "upper", "lower", "inner", "outer", "top", "bottom", etc. is all based on the orientation or positional relationship shown in the drawings. The purpose is only to facilitate the description of the present invention and simplify the description, rather than indicating or implying that the components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.
[0017] Such as Figure 1-2As shown in the figure, the present invention provides a braking and locking device for a pumping unit, which specifically includes: a brake control mechanism, a transmission mechanism, and a brake main body mechanism. The transmission mechanism is simultaneously connected to the brake control mechanism and the brake main body mechanism. The brake main body mechanism is installed on the pumping unit equipment, and the brake control mechanism controls the brake main body mechanism to perform a braking operation on the pumping unit through the transmission mechanism. The brake main body mechanism includes a brake hub 26 installed on the pumping unit equipment. The brake hub 26 is connected to the rotating component of the pumping unit to rotate synchronously. When the brake hub 26 is decelerated and stopped by force, it drives the rotating component of the pumping unit to decelerate and stop synchronously to achieve the braking and shutdown operations of the pumping unit.
[0018] Among them, there are two semi-circular brake shoes 27 with a radius slightly larger than that of the brake hub 26 outside the brake hub 26. The two brake shoes 27 are buckled into a circle and are movably connected at the top through a safety shaft 24. By pushing and tightening the two brake shoes 27 after buckling, the friction force between the inner wall and the brake hub 26 is increased, thereby decelerating the brake hub 26. The other end of each brake shoe 27 is provided with a downward protruding boss. A clamping bolt passes through between the two bosses. One end of the clamping bolt is fixed and the other end is provided with a cam-shaped brake rocker arm 28. When the brake rocker arm 28 is pulled downward, the protruding part of the brake rocker arm 28 rotates upward to squeeze the boss, so that the two brake shoes 27 are close to each other and clamped, thereby performing braking. A locking groove 23 is provided on the brake hub 26, and a safety hook 22 is provided on the safety shaft 24. The safety hook 22 is matched with the locking groove 23 in shape. After the brake hub 26 is decelerated, the safety hook 22 is pulled downward so that it slides into the locking groove 23. At this time, the brake hub 26 is locked and fixed in position under the cooperation of the safety hook 22 and the locking groove 23, thereby braking the pumping unit equipment.
[0019] It should be noted that the other ends of the safety hook 22 and the brake rocker arm 28 are connected to the transmission mechanism. The transmission mechanism controls the brake main body mechanism to perform braking work by pulling down the safety hook or the brake rocker arm 28 according to the operation.
[0020] In the present invention, a protection device is provided on the brake main body mechanism. The protection device can maintain the motion state of the brake main body mechanism unchanged when the brake main body mechanism is separated from the transmission mechanism, and keep the pumping unit equipment working normally. Generally, the protection device includes a return spring 25 installed at the tail of the safety hook 22. One end of the return spring 25 is connected to the safety hook 22, and the other end is fixed on the pumping unit. When the brake main body mechanism is separated from the transmission mechanism, the return spring 25 pulls the safety hook 22 tightly under the action of its own elastic force, so that the safety hook 22 maintains the state when the pumping unit is working normally, preventing the safety hook 22 from rotating downward under the action of its own gravity and cooperating with the locking groove 23 to lock the device, maintaining the running state of the device, and reducing the safety hazards of the device.
[0021] Such as Figure 1As shown, the transmission mechanism includes a brake cross tie rod 13, a safety hook cross tie rod 14, and a corner base. The position of the corner base is fixed. The corner base is provided with a coaxial corner rotator 16 with a horizontal direction. Both ends of the coaxial corner rotator 16 are respectively provided with bent brake connectors and safety hook connectors with the same shape. The brake connectors and the safety hook connectors are independent of each other and can both freely rotate around the coaxial corner rotator 16 as the axis. One end of the brake connector is connected to the brake cross tie rod 13 with a horizontal direction, and the other end is connected to the brake vertical tie rod 18 with a vertical direction; one end of the safety hook connector is connected to the safety hook cross tie rod 14 with a horizontal direction, and the other end is connected to the safety hook vertical tie rod 20 with a vertical direction. The other end of the safety hook vertical tie rod 20 is connected to the safety hook 22, and the other end of the brake vertical tie rod 18 is connected to the brake rocker arm 28. Horizontally pulling the safety hook cross tie rod 14, the cross tie rod connector rotates downward, thereby pulling down the safety hook vertical tie rod 18 and the safety hook, and realizing the locking operation of the brake hub 26. Similarly, by horizontally pulling the safety hook vertical tie rod 18, the brake rocker arm 28 can be pulled downward, thereby clamping the brake shoe 27 to brake and decelerate the brake hub 26.
[0022] Wherein, vertical tie rod adjustment screws 19 are respectively provided on the safety hook vertical tie rod 20 and the brake vertical tie rod 18, and cross tie rod adjustment screws 15 are respectively provided on the safety hook cross tie rod 14 and the brake cross tie rod 13. By rotating and adjusting the corresponding vertical tie rod adjustment screws 19, the safety hook vertical tie rod 20 or the brake vertical tie rod 18 can be disassembled and replaced; by rotating and adjusting the corresponding cross tie rod adjustment screws 15, the safety hook cross tie rod 14 or the brake cross tie rod 13 can be disassembled and replaced.
[0023] It should be noted that the bottom ends of the brake vertical tie rod 18 and the safety hook vertical tie rod 20 are respectively connected to the brake connector and the safety hook connector through the first connecting pin shaft 17, and the top ends are respectively connected to the brake rocker arm 28 and the safety hook 22 through the second connecting pin shaft 21.
[0024] In the present invention, the brake control mechanism includes a brake controller and a safety hook controller which have the same structure and are arranged in parallel, and are respectively used to control the brake main mechanism and the safety hook 22. The brake controller includes a lock tooth fixing plate 10 placed vertically. A lock tooth 7 is provided at the top of the lock tooth fixing plate 10, and a handle rotating shaft 12 is provided at the bottom. A brake operating handle 1 is provided on the lock tooth fixing plate 10. The bottom end of the brake operating handle 1 is connected to the handle rotating shaft 12 and can move along the direction of the lock tooth fixing plate 10 with the handle rotating shaft 12 as the center. A lock block 9 is provided at the bottom of the brake operating handle 1. The lock block 9 cooperates with the lock tooth 7 and can move up and down on the brake operating handle 1. When the lock block 9 drops, the cooperation position between the lock block 9 and the lock tooth 7 is fixed. At this time, the position of the brake operating handle 1 is fixed and cannot move. The structure of the safety hook controller is the same as that of the brake controller, and the safety hook operating handle 3 is used to replace the brake operating handle 1 on the lock tooth fixing plate 10 of the brake controller. A fixed base 11 is provided at the bottom of the brake control mechanism, and the two ends of the fixed base 11 are respectively connected to the bottom ends of the two lock tooth fixing plates 10.
[0025] The brake operating handle 1 and the safety hook operating handle 3 are respectively connected to a brake cross rod 13 and a safety hook cross rod 14. By pulling the safety hook operating handle 1 back and forth, the safety hook 22 can be lifted or lowered to control the cooperation between the safety hook 22 and the locking slot 23, thereby controlling the locking state of the brake hub 26; by pulling the brake operating handle 1 back and forth, the brake rocker arm 28 can be lifted or lowered to control the pressing degree of the brake shoe 27, thereby controlling the braking speed of the brake hub 26.
[0026] Wherein, a brake operating pull rod 2 and a safety hook operating pull rod 4 are respectively provided on the brake operating handle 1 and the safety hook operating handle 3. A spring pull rod 8 is respectively provided below the brake operating pull rod 2 and the safety hook operating pull rod 4 and is connected to the corresponding lock block 9 through the spring pull rod 8. When the brake operating pull rod 2 or the safety hook operating pull rod 4 is pressed, the corresponding lock block 9 is lifted through the spring pull rod 8, and the lock block 9 is separated from the lock tooth 7. At this time, the brake operating handle 1 or the safety hook operating handle 3 can move on its corresponding lock tooth fixing plate 10.
[0027] As Figure 1 shown, a limit operating mechanism is provided on the brake control mechanism to limit the strokes of the brake operating handle 1 and the safety hook operating handle 3, so that the brake operating handle 1 cannot act prior to the safety hook operating handle 3 during the braking operation, and the safety hook operating handle 3 cannot act prior to the brake operating handle 1 during the resume operation.
[0028] Among them, the limiting mechanism includes a limiting tenon 6 and a limiting stop rod 5. The end of the locking tooth 7 installed in the brake controller, the height of the limiting tenon 6 is higher than that of the locking tooth 7. Generally, the height of the limiting tenon 6 is 1 cm higher than that of the locking tooth 7. When the lock block 9 on the brake operation handle 1 is not fully lifted, there is an overlap between the height of the limiting tenon 6 and the lock block 9, and the brake operation handle 1 is limited by blocking the lock block 9. Only after pressing the brake operation pull rod 2 to fully lift the lock block 9 can the brake operation handle 1 move past the limiting tenon 6. The limiting stop rod 5 is installed on the front surface of the safety hook operation handle 3 and extends horizontally in front of the brake operation handle 2. Usually, the position of the limiting tenon 6 is around the 3rd - 4th tooth of the locking tooth 7. When the pumping unit is working normally, the brake operation handle 1 is placed between the 1st and 2nd teeth of the locking tooth 7. When performing a brake operation, the normal operation sequence is to first pull the brake operation handle 1 and then pull the safety hook operation handle 3. At this time, if the safety hook operation handle 3 is pulled first, after the limiting stop rod 5 moves backward, it contacts the brake operation handle 1, and the position of the brake operation handle 1 is fixed by the limiting tenon 6, so the safety hook operation handle 3 cannot move; when performing a recovery operation, the normal operation sequence is to first pull the safety hook operation handle 3 and then pull the brake operation handle 1. At this time, if the brake operation handle 1 is pulled first, the forward - moving brake operation handle 1 contacts the limiting stop rod 5, and the lock block 9 under the safety hook operation handle 3 cooperates with the locking tooth 7 to fix the position of the safety hook operation handle 3, and the brake operation handle 1 cannot move. The limiting mechanism restricts the positions and operation sequences of the safety hook operation handle 3 and the brake operation handle 1, prevents incorrect operation sequences during on - site work, avoids the occurrence of safety accidents caused thereby, and improves the stability and safety of the device.
[0029] It should be noted that a locking mechanism is provided inside the brake control mechanism to fix the position of the safety hook operating handle 3. The locking mechanism includes a pin fixing shaft 29, a sliding shaft sleeve 30, an adjusting screw 31, a movable latch 32 and a fixed latch 33; the pin fixing shaft 29 is horizontally oriented, and both ends are respectively connected to the bottom ends of two lock tooth fixing plates 10. The fixed latch 32 is installed on the rear surface of the limit stop rod 5. One end of the adjusting screw 31 is provided with a sliding shaft sleeve 30 installed on the pin fixing shaft 29, and the other end is provided with a movable latch 32. When the movable latch 32 is in contact and cooperation with the fixed latch 33, a padlock is added to fix the positions of the limit stop rod 5 and the safety hook operating handle 3. This prevents the safety hook operating handle 3 from moving due to accidental contact by construction workers or other personnel during the construction process, avoids the situation where the equipment under repair resumes rotation, greatly reduces the safety hazards of the device, and improves the safety during inspection and maintenance work. In this embodiment, the fixed latch 33 is provided with a protruding lock catch, and the movable latch 32 is provided with a lock catch groove corresponding to the position of the lock catch. After the fixed latch 33 is in contact and cooperation with the movable latch 32, the lock catch is inserted into the lock catch groove. At this time, a padlock is added to the lock catch to fix the positions of the fixed latch 33 and the movable latch 32, thereby fixing the position of the safety hook operating handle 3 through the limit stop rod 5.
[0030] In addition, the adjusting screw 31 and the movable latch 32 are connected by threads. By rotating the movable latch 32, the length of the adjusting screw 31 can be adjusted, so that the device can fix the safety hook operating handle 3 at any position according to the on-site work requirements. The lock tooth fixing plate 10 is provided with a horizontally penetrating padlock hole near the limit tenon 6. Installing a padlock on the padlock hole can cooperate with the limit mechanism to fix the positions of the brake operating handle 1 and the safety hook operating handle 3. When the pumping unit is working normally, by adding a padlock to the padlock hole, when the brake operating handle 1 is accidentally touched by personnel or other reasons, the brake operating handle 1 is restricted by the padlock and its position cannot move. Cooperating with the limit mechanism can simultaneously fix the position of the safety hook operating handle 3, improving the anti-accidental contact ability of the device during operation and enhancing the safety of the device.
[0031] When the pumping unit is shut down for maintenance, the stability of the device can be further improved by installing a padlock between the two lock tooth fixing plates 10 and passing the safety hook operating handle 3 through the padlock to form a secondary fixation.
[0032] The braking and locking device for a pumping unit provided by the present invention can prevent accidents such as the safety hook coming out of the slot caused by incorrect operation sequence or accidental contact during the working process, and the situation where the safety hook suddenly drops during the operation of the device when the vertical connecting rod of the safety hook falls off, resulting in the shutdown and damage of the pumping unit. The specific operation process of the device is as follows: Step 1: Pull the brake operation handle to decelerate the brake hub. After deceleration, pull the safety hook operation handle to control the safety hook to fall and lock the brake hub. After the device is locked, carry out inspection, repair and maintenance operations. During this process, when the staff operates in the wrong order and pulls the safety hook operation handle first, the limit lever moves backward with the safety hook operation handle and contacts the brake operation handle. The position of the brake operation handle is fixed by the limit tenon, and the safety hook operation handle cannot move, so the wrong order operation cannot be carried out.
[0033] Step 2: Adjust the length of the adjusting screw rod, connect and fix the movable pin buckle and the fixed pin buckle and install a padlock. At the same time, also install a padlock between the two lock tooth fixing plates and pass the safety hook operation handle into the padlock. At this time, the movable pin buckle and the fixed pin buckle are fixed by the padlock, and then the positions of the limit lever and the safety hook operation handle are fixed. The padlock between the lock tooth fixing plates further fixes the position of the safety hook operation handle. Even if there is accidental touch or strong impact, the position of the safety hook operation handle remains stably fixed in place, greatly improving the stability and safety of the device.
[0034] Step 3: After the inspection, repair and maintenance operations are completed, remove the padlock between the locking mechanism and the lock tooth fixing plate, push the safety hook operation handle forward to control the safety hook to disengage from the slot and release the locked state, and then push the brake operation handle forward to release the braking state, and the brake hub resumes the working state. During this process, when the staff makes a wrong operation and pushes the brake operation handle forward first, the forward moving brake operation handle contacts the limit lever, and the lock block under the safety hook operation handle cooperates with the lock teeth to fix the position of the safety hook operation handle, and the brake operation handle cannot move, so the wrong order operation cannot be carried out.
[0035] During the daily operation process, when the transmission mechanism is separated from the brake main body mechanism, the return spring installed at the tail of the safety hook pulls the safety hook under its own elastic force to prevent the safety hook from falling, and avoid the separation of the transmission mechanism and the brake main body mechanism caused by environmental or human factors, resulting in the safety hook in the brake main body mechanism falling under the influence of gravity and the safety hook entering the locking card slot to cause the pumping unit to stop suddenly and damage the equipment.
[0036] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A braking and locking device for a pumping unit, characterized in that, Including: A brake control mechanism, a transmission mechanism, and a brake main body mechanism. The transmission mechanism is simultaneously connected to the brake control mechanism and the brake main body mechanism. The brake control mechanism controls the brake main body mechanism to perform a braking operation on the pumping unit through the transmission mechanism. The brake control mechanism includes a brake controller and a safety hook controller that have the same structure and are arranged in parallel. The brake controller includes a lock tooth fixing plate (10) placed vertically. At the top of the lock tooth fixing plate (10), there is a lock tooth (7), and at the bottom, there is a handle rotating shaft (12). A brake operation handle (1) is provided on the lock tooth fixing plate (10). The bottom end of the brake operation handle (1) is connected to the handle rotating shaft (12) and moves along the direction of the lock tooth fixing plate (10). A lock block (9) is provided at the bottom of the brake operation handle (1). When the lock block (9) drops, it cooperates with the lock tooth (7) to fix the position of the brake operation handle (1). The structure of the safety hook controller is the same as that of the brake controller. On the lock tooth fixing plate (10) of the brake controller, the safety hook operation handle (3) replaces the brake operation handle (1). A fixed base (11) is provided at the bottom of the brake control mechanism. The two ends of the fixed base (11) are respectively connected to the bottom ends of the two lock tooth fixing plates (10). A limit operation mechanism is provided on the brake control mechanism to limit the stroke of the brake operation handle (1) and the safety hook operation handle (3), so that in the braking operation, the safety hook operation handle (3) cannot act prior to the brake operation handle (1), and in the restart operation, the brake operation handle (1) cannot act prior to the safety hook operation handle (3). A locking mechanism is provided inside the brake control mechanism to fix the position of the safety hook operation handle (3). A return spring (25) is provided on the brake main body mechanism. One end of the return spring (25) is connected to the safety hook (22), and the other end is fixed on the pumping unit. When the brake main body mechanism is separated from the transmission mechanism, the return spring (25) pulls the safety hook (22) at the other end to prevent the safety hook (22) from cooperating with the locking slot (23) to lock the device and maintain the operating state of the device.
2. The braking and locking device for pumping units according to claim 1, wherein The limit mechanism includes a limit tenon (6) and a limit stop bar (5). The limit tenon (6) is installed at the end of the lock tooth (7) inside the brake controller. The height of the limit tenon (6) is higher than that of the lock tooth (7). When the lock block (9) on the brake operation handle (1) is not fully lifted, there is an overlap between the height of the limit tenon (6) and the lock block (9), and the brake operation handle (1) is limited by blocking the lock block (9). The limit stop bar (5) is installed on the front surface of the safety hook operation handle (3) and extends horizontally in front of the brake operation handle (2). During the braking operation and the start-up operation, the limit stop bar (5) restricts the operation sequence of the brake operation handle (1) and the safety hook operation handle (3).
3. The braking and locking device for pumping units according to claim 2, wherein The locking mechanism includes a latch fixing shaft (29), a sliding bushing (30), an adjusting screw (31), a movable latch (32) and a fixed latch (33); the latch fixing shaft (29) is horizontal, and its two ends are respectively connected to the bottom ends of two lock tooth fixing plates (10). A fixed latch (32) is provided on the rear side surface of the limit stop bar (5). One end of the adjusting screw (31) is provided with a sliding bushing (30) installed on the latch fixing shaft (29), and the other end is provided with a movable latch (32). After the movable latch (32) is in contact and cooperation with the fixed latch (33), a padlock is added to fix the positions of the limit stop bar (5) and the safety hook operating handle (3).
4. The braking and locking device for pumping units according to claim 3, wherein, On the lock tooth fixing plate (10) of the brake control mechanism, a padlock hole penetrating horizontally from left to right is provided near the limit tenon (6). Installing a padlock on the padlock hole can cooperate with the limit mechanism to fix the positions of the brake operating handle (1) and the safety hook operating handle (3).
5. The braking and locking device for a pumping unit according to claim 1, characterized in that, The transmission mechanism includes a brake cross rod (13), a safety hook cross rod (14) and a corner base. The corner base is provided with a coaxial corner adapter (16) with a horizontal direction. The two ends of the coaxial corner adapter (16) are respectively provided with bent brake connecting pieces and safety hook connecting pieces with the same shape. One end of the safety hook cross rod (14) is connected to the safety hook operating handle (3), and the other end is connected to one end of the safety hook connecting piece. One end of the brake cross rod (13) is connected to the brake operating handle (1), and the other end is connected to one end of the brake connecting piece; the other end of the brake connecting piece is provided with a brake vertical rod (18) with a vertically upward direction, and the other end of the safety hook connecting piece is provided with a safety hook vertical rod (20) with a vertically upward direction.
6. The braking and locking device for a pumping unit according to claim 1, characterized in that, Vertical rod adjusting screws (19) are respectively provided on the safety hook vertical rod (20) and the brake vertical rod (18), and cross rod adjusting screws (15) are respectively provided on the safety hook cross rod (14) and the brake cross rod (13).
7. The braking and locking device for pumping units according to claim 5, characterized in that, The brake main body mechanism includes a brake hub (26) installed on the pumping unit equipment. Outside the brake hub (26), there are two semi-circular brake shoes (27) with a radius slightly larger than that of the brake hub (26). The two brake shoes (27) are buckled into a circle, and the top ends are movably connected by a safety shaft (24). The other end is provided with a downward protruding boss. A clamping bolt passes through between the two bosses. One end of the clamping bolt is fixed and the other end is provided with a cam-shaped brake rocker arm (28). The other end of the brake rocker arm (28) is connected to the brake vertical link (18). The downward pull of the brake vertical link (18) drives the brake rocker arm (28) to tightly push the brake shoes (27) to clamp the brake hub (26) for braking; a locking slot (23) is provided on the brake hub (26), and a safety hook (22) is provided on the safety shaft (24). The safety hook (22) is in shape fit with the locking slot (23). One end of the safety hook (22) is connected to the safety hook vertical rod (20). The safety hook vertical rod (20) pulls the safety hook (22) downward into the locking slot (23) to lock the state of the pumping unit.
8. The braking and locking device for a pumping unit according to claim 7, characterized in that, The brake operation handle (1) and the safety hook operation handle (3) are respectively provided with a brake operation pull rod (2) and a safety hook operation pull rod (4). Below the brake operation pull rod (2) and the safety hook operation pull rod (4), there are spring pull rods (8) respectively connected to corresponding lock blocks (9). When the brake operation pull rod (2) or the safety hook operation pull rod (4) is pressed, the corresponding lock block (9) is lifted.