Secondary brake linkage device of oil pumping unit

Abstract

The utility model relates to the technical field of pumping unit auxiliary equipment, in particular to a pumping unit secondary brake linkage device which comprises a fluted disc concentric with a brake disc, a brake locking block and a jacking device are arranged beside the fluted disc, locking teeth are arranged at the bottom of the brake locking block and meshed with clamping teeth on the edge of the fluted disc, a gear disc is arranged on the jacking device, and the gear disc is meshed with the brake locking block. A transmission chain is meshed on the gear disc, and one end of the transmission chain is connected with the brake pull rod. According to the secondary brake linkage device of the oil pumping unit, the transmission chain, the jacking device and the brake pull rod are matched, when a worker pulls the brake pull rod downwards, the transmission chain can be driven to synchronously act, and the transmission chain slides to drive the jacking device to push a brake locking block to a fluted disc; when operating the brake device of the oil pumping unit on the ground, a worker can synchronously control the brake locking block to be meshed with the fluted disc to achieve secondary braking, the worker does not need to climb to a gearbox operation platform to operate, the danger of work is reduced, and meanwhile the work intensity of the worker is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for oil pumping units, and in particular to a secondary braking linkage device for oil pumping units. Background Technology

[0002] As one of the most common operating equipment in oilfield production, pumping units require shutdown and maintenance after prolonged operation to extend their service life. When shutting down the pumping unit, in addition to operating the brake pads to engage the brake wheel, a secondary braking device is used to further secure the unit, improving operational safety during subsequent maintenance. In existing technologies, commonly used secondary braking devices for pumping units are located on top of the gearbox, approximately 2 meters above the ground. During operation, workers must climb to the gearbox's operating platform to operate the secondary braking device. However, due to the structural limitations of the pumping unit, this climbing operation presents safety hazards and incurs high labor intensity for workers. Therefore, to address these shortcomings, a secondary braking linkage device for pumping units is proposed. Summary of the Invention

[0003] The purpose of this invention is to provide a secondary braking linkage device for an oil pumping unit, so as to overcome the defect in the prior art that requires climbing to the operating platform of the oil pumping unit gearbox to operate the secondary braking device.

[0004] To achieve the above objectives, this utility model provides a secondary braking linkage device for an oil pumping unit, comprising:

[0005] The device comprises a geared disc, a brake locking block, and a drive chain. The geared disc is mounted on the pumping unit's brake disc and is concentrically arranged with the brake disc. The brake locking block is arc-shaped with its inner side facing the geared disc. A clamping device is provided on the outside of the brake locking block. The direction of the brake locking block and the clamping device is parallel to that of the geared disc. The top ends of the brake locking block and the clamping device are fixed by hinges, and their rotation direction is parallel to that of the geared disc. The bottom end of the inner wall of the brake locking block has locking teeth that mesh with the geared disc. The bottom end of the clamping device contacts the outer wall of the brake locking block. A gear disc is provided at the hinged top of the clamping device. The drive chain meshes with the gear disc and is connected at one end to the brake lever. The movement of the drive chain drives the clamping device through the gear disc to push the locking teeth of the brake locking block to mesh with the gear disc.

[0006] Preferably, an L-shaped bracket is provided below the gear disc, the bracket bends upward to the side of the gear disc, and the brake locking block and the clamping device are both hinged and fixed on the bracket.

[0007] Preferably, the support surface is provided with a plurality of reversing gears, and the transmission chain is arranged along the support surface and meshes with the reversing gears.

[0008] Preferably, a reversing gear is provided at both the end of the bracket and the middle bend, and the transmission chain extends upward after passing under the reversing gear at the bend of the bracket.

[0009] Preferably, one end of the transmission chain is connected to the brake lever, and the other end extends upward along the bracket, wraps around the gear disk from the outside and meshes with the gear disk, and then continues to extend downward and is fixed on the bracket. A chain return spring is provided between the end of the transmission chain and the bracket.

[0010] Preferably, the tightening device is provided with a locking block return spring, one end of which is connected to the brake locking block and the other end is connected to the tightening device.

[0011] Preferably, the clamping device includes a clamping block and a gear disk. The gear disk has a vertically penetrating rotating shaft in the middle. The rotating shaft passes through the gear disk and is fixed on the bracket. The top end of the clamping block contacts the brake locking block, and the bottom end is fixed on the gear disk.

[0012] Preferably, the bottom end of the clamping block is U-shaped and the size of the U-shaped opening matches the rotation shaft, with the two ends of the U-shape fixed to both sides of the rotation shaft.

[0013] The secondary brake linkage device for an oil pumping unit provided by this utility model has the following beneficial effects:

[0014] The secondary braking linkage device for the pumping unit provided by this utility model connects one end of the transmission chain to the brake lever by meshing the transmission chain with the tightening device. During the pumping unit shutdown operation, when the operator pulls down the brake lever to control the pumping unit braking device, the transmission chain will move simultaneously. When the transmission chain slides, it will drive the tightening device to rotate synchronously through the meshing gear disc, pushing the brake lock block against the gear disc. When the operator operates the pumping unit braking device on the ground, he can simultaneously control the brake lock block to mesh with the gear disc to achieve secondary braking. There is no need for the operator to climb to the gearbox operating platform to operate, which reduces the danger of the operation and the workload of the operator. Attached Figure Description

[0015] Figure 1 This is a front view of the secondary brake linkage device of the oil pumping unit;

[0016] Figure 2 This is a rear view of the secondary brake linkage device of the oil pumping unit.

[0017] Legend:

[0018] 1. Brake lock block; 2. Lock block return spring; 3. Tightening device; 4. Chain return spring; 5. Drive chain; 6. Reversing gear; 7. Brake bracket; 8. Brake lever; 9. Gear disc. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figure 1-2 As shown, the present invention provides a secondary brake linkage device for an oil pumping unit, comprising:

[0021] The pumping unit comprises a geared disc 9, a brake locking block 1, and a transmission chain 5. The geared disc 9 is mounted on the pumping unit's brake disc and is concentrically arranged with it. During operation, the geared disc 9 and brake locking block 1, as the main working components of the pumping unit's secondary braking device, are typically concentrically mounted on the pumping unit's brake disc. The edge of the geared disc 9 has evenly spaced teeth along its circumference. During operation, the geared disc 9 rotates synchronously with the brake disc. During shutdown, the brake locking block 1 contacts the geared disc 9 and engages with the teeth on the edge of the brake disc, fixing the position of the geared disc 9. The geared disc 9 then drives the brake disc to apply secondary braking. After maintenance, resetting and removing the brake locking block 1 releases the secondary braking device from the pumping unit's brakes.

[0022] The brake locking block 1 is arc-shaped with its inner side facing the gear disc 9. A clamping device 3 is provided on the outside of the brake locking block 1. The directions of the brake locking block 1 and the clamping device 3 are parallel to the gear disc 9. The top ends of the brake locking block 1 and the clamping device 3 are hinged and fixed, with their rotation direction parallel to the direction of the gear disc 9. The bottom end of the inner wall of the brake locking block 1 has locking teeth that mesh with the gear disc 9. The bottom end of the clamping device 3 contacts the outer wall of the brake locking block 1. During the secondary shutdown operation, the operator controls the clamping device 3 to rotate. As the clamping device 3 rotates, the bottom end of the clamping device 3 gradually rotates towards the brake locking block 1 and contacts the outer wall of the brake locking block 1, pushing the locking teeth at the bottom end of the brake locking block 1 towards the gear disc 9. When the locking teeth on the outer wall of the gear disc 9 mesh with the locking teeth at the bottom end of the brake locking block 1, the position of the gear disc 9 is fixed. At this time, the gear disc 9 will drive the connected pumping unit brake disc to be fixed together, thus performing a secondary braking on the brake disc. The clamping device 3 is mainly used to transmit power. Under normal circumstances, the operator controls the clamping device 3 to rotate clockwise. At this time, after the bottom end of the clamping device 3 is released from the brake lock block 1, it will gradually push the locking teeth at the bottom end of the brake lock block 1 to move upward and engage with the gear plate 9. When the braking work is over, the operator only needs to remove the force applied to the clamping device 3. Under its own weight and the action of the chain return spring 4, the clamping device 3 will gradually return to its original state. Without the support of the clamping device 3, the brake lock block 1 will also rotate back to its original state under its own weight and the action of the lock block return spring 2, thereby releasing the lock on the gear plate 9 and realizing the release of the secondary braking work.

[0023] To enable operation of the secondary braking device during ground work, a gear disk is provided at the hinged top of the clamping device 3. A transmission chain 5 meshes with the gear disk, and one end is connected to the brake lever 8. The movement of the transmission chain 5 drives the clamping device 3 via the gear disk, pushing the locking teeth of the brake locking block 1 to mesh with the gear disk 9. The transmission chain 5 transmits power between the brake lever 8 and the clamping device 3. When the brake lever 8 is pulled, the transmission chain 5 slides along with it. Because the gear disk at the hinged top of the clamping device 3 meshes with the transmission chain 5, the sliding of the transmission chain 5 drives the gear disk to rotate. The rotation direction of the gear disk matches the movement direction of the transmission chain 5. In actual operation, the direction of the transmission chain 5 when passing the gear disk and its movement direction during operation are determined according to the required movement direction of the clamping device 3. This ensures that when applying secondary braking to the pumping unit, the locking block 3 always pushes the locking teeth at the bottom of the brake locking block 1 towards and meshes with the gear disk 9, improving the stability of the device's operation. At this time, during the secondary braking operation, the staff only needs to pull the brake lever 8 to drive the tightening device 3 to rotate through the transmission chain 5 connected to the brake lever 8, pushing the locking teeth at the bottom of the brake locking block 1 towards the gear plate 9 for engagement, thus achieving the secondary braking operation. After the operation is completed, the staff only needs to return the brake lever 8 to its original state. Under the action of gravity and the locking block return spring 2, the tightening device 3 and the brake locking block 1 will gradually return to their original state, thereby achieving control of the working state of the secondary braking device on the ground.

[0024] The gear disc 9 is provided with an L-shaped bracket 7 below it. The bracket 7 bends upward to the side of the gear disc 9, and the brake locking block 1 and the clamping device 3 are both hinged and fixed to the bracket 7. The bracket 7 serves as a guide and support during operation, providing a stable mounting point for the brake locking block 1 and the clamping device 3, eliminating the need to machine mounting points on the pumping unit body and ensuring the integrity of the pumping unit body. The horizontal end of the L-shaped bracket is usually mounted on a support around the pumping unit, while the vertical section extends upward to the side of the gear disc 9 to provide mounting points for the brake locking block 1 and the clamping device 3. In actual operation, in order to reduce the processing difficulty of the clamping device 3, the clamping device 3 is usually processed into two parts: a clamping block and a gear disk. A rotating shaft is provided in the middle of the gear disk. The rotating shaft passes vertically through the gear disk and is fixed on the bracket 7. At this time, the gear disk can rotate freely along the rotating shaft. Then, the clamping block is fixed on the gear disk with bolts to form the clamping device 3. The top of the clamping block contacts the brake locking block 1, and the bottom is processed into a U-shape with the size of the U-shaped notch corresponding to the rotating shaft. The two ends of the U-shape are fixed to the left and right sides of the transmission shaft on the gear disk with bolts, and then the clamping block and the gear disk are connected.

[0025] It is important to note that the support 7 has multiple reversing gears 6 on its surface, and the transmission chain 5 is arranged along the surface of the support 7 and meshes with the reversing gears 6. The reversing gears 6 and the support 7 cooperate to form a fixed path on the surface of the support 7. After the transmission chain 5 is arranged along the surface of the support 7 and meshes with the reversing gears 6, the transmission chain 5 can only move back and forth along the surface of the support 7. During this movement, it drives the reversing gears 6 to rotate synchronously. When the transmission chain 5 moves to the left or right along the surface of the support 7, the reversing gears 6 cannot rotate to the left or right, thus preventing the chain 5 from moving to the left or right along the surface of the support 7. This fixes the direction of movement of the chain 5, preventing it from sliding off the surface of the support 7 during operation and improving the stability of the device. Simultaneously, the support 7 and the reversing gears 6 also support the transmission chain 5, holding it in place and preventing it from sliding down under gravity. This avoids the transmission chain 5 sliding downwards under its own weight during normal operation of the pumping unit, which could cause the secondary braking device of the pumping unit to malfunction and damage the device, thus improving the safety of the device.

[0026] Typically, a reversing gear 6 is provided at both the end and the middle bend of the bracket 7. The transmission chain 5 passes under the reversing gear 6 at the bend of the bracket 7 and extends upward. The position and running direction of the transmission chain 5 can be fixed by the reversing gear 6 at the end and the bend of the bracket 7, and at the same time, the transmission chain 5 is guided when it bends upward.

[0027] To improve the working efficiency of the device, one end of the transmission chain 5 is connected to the brake lever 8, and the other end extends upward along the bracket 7, wraps around the gear disc from the outside, meshes with the gear disc, and continues downward to be fixed on the bracket 7. A chain return spring 4 is provided between the end of the transmission chain 5 and the bracket 7. During operation, after the secondary braking operation is completed, the operator will release the gear disc 9. At this time, due to the elasticity of the chain return spring 4, the chain return spring 4 will drive the chain 5 to pull back to the position before the operation, thereby driving the tightening device 3 and the brake locking block 1 to rotate back to the initial working position after operation, thus realizing the reset of the secondary braking device, which can be reused. At the same time, the tightening device 3 is provided with a locking block return spring 2, one end of which is connected to the brake locking block 1 and the other end is connected to the tightening device 3. By utilizing the elasticity of the locking block return spring 2, the length of the locking block return spring 2 is extended during the process of the transmission chain 5 driving the tightening device 3 to reset. Under the action of its own elastic force, the brake locking block 1 is pulled back to its original position synchronously. This enables the brake locking block 1, the tightening device 3 and the transmission chain 5 to reset synchronously at the first moment when the brake lever 8 is released, thereby improving the response speed and working efficiency of the device.

[0028] Combination Figures 1 to 2 The following describes in detail the working steps of this secondary brake linkage device for oil pumping units:

[0029] Step 1: Install the device onto the pumping unit according to its structure. First, install the bracket in the appropriate position according to the pumping unit's structure, aligning it with the gear plate. Then, install the brake lock block, clamping device, and drive chain onto the bracket. When installing the drive chain, adjust the winding direction between the drive chain and the clamping device's gear plate according to the clamping device's movement direction. Finally, fix one end of the drive chain to the brake lever of the pumping unit's brake device.

[0030] Step 2: Start the pumping unit for normal operation. When stopping the pumping unit for maintenance, pull the brake lever to apply both primary and secondary braking simultaneously. At this time, the operator pulls down the brake lever by operating the pumping unit's braking device. The brake pads grip the brake disc, applying the brakes. Simultaneously, the brake lever pulls down the drive chain, which in turn drives the clamping device to rotate, pushing the locking teeth at the bottom of the brake locking block against the chuck. After engaging with the chuck, the chuck's position is fixed. The chuck then synchronously fixes the position of the brake disc, completing both primary and secondary braking simultaneously.

[0031] Step 3: Perform maintenance work while the pumping unit is operating. After the maintenance work is completed, lift the brake lever to reset the device and release the primary and secondary brakes. During this process, the operator moves the pumping unit brake device upwards, and the pumping unit brake pads no longer grip the brake disc. At the same time, the drive chain is no longer under the tension of the brake lever, and under the action of the chain return spring, the drive chain is pulled back to its original position. When the drive chain moves, it meshes and rotates the clamping device to its initial position. The locking block return spring pulls the brake locking block back to release the fixing of the gear disc, thereby controlling the release of the secondary brake device while releasing the primary brake.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A secondary brake linkage device for an oil pumping unit, characterized in that, include: The gear disc (9), brake lock block (1) and transmission chain (5) are mounted on the pumping unit brake disc and are arranged concentrically with the brake disc. The brake locking block (1) is arc-shaped and its inner side faces the gear plate (9). The brake locking block (1) is provided with a clamping device (3). The direction of the brake locking block (1) and the clamping device (3) is parallel to the gear plate (9). The top ends of the brake locking block (1) and the clamping device (3) are fixed by hinge and the rotation direction is parallel to the direction of the gear plate (9). The bottom end of the inner wall of the brake locking block (1) is provided with locking teeth that mesh with the gear plate (9). The bottom end of the clamping device (3) is in contact with the outer wall of the brake locking block (1). The top hinge of the clamping device (3) is provided with a gear plate. The transmission chain (5) meshes with the gear plate and one end is connected to the brake lever (8). The movement of the transmission chain (5) drives the clamping device (3) through the gear plate to push the locking teeth of the brake locking block (1) to mesh with the gear plate (9).

2. The secondary brake linkage device for the oil pumping unit according to claim 1, characterized in that, An L-shaped bracket (7) is provided below the gear disc (9). The bracket (7) bends upward to the side of the gear disc (9). The brake lock block (1) and the clamping device (3) are both hinged and fixed on the bracket (7).

3. The secondary brake linkage device for the oil pumping unit according to claim 2, characterized in that, The support (7) has multiple reversing gears (6) on its surface, and the transmission chain (5) is arranged along the surface of the support (7) and meshes with the reversing gears (6).

4. The secondary brake linkage device for the oil pumping unit according to claim 3, characterized in that, The bracket (7) is provided with a reversing gear (6) at both the end and the middle bend. The transmission chain (5) passes under the reversing gear (6) at the bend of the bracket (7) and extends upward.

5. The secondary brake linkage device for the oil pumping unit according to claim 4, characterized in that, One end of the transmission chain (5) is connected to the brake lever (8), and the other end extends upward along the bracket (7), wraps around the gear disk from the outside and meshes with the gear disk, and then continues to extend downward and is fixed on the bracket (7). A chain return spring (4) is provided between the end of the transmission chain (5) and the bracket (7).

6. The secondary brake linkage device for the oil pumping unit according to claim 1, characterized in that, The clamping device (3) is equipped with a locking block return spring (2), one end of which is connected to the brake locking block (1) and the other end is connected to the clamping device (3).

7. The secondary brake linkage device for an oil pumping unit according to any one of claims 2-5, characterized in that, The clamping device (3) includes a clamping block and a gear disk. A vertically penetrating rotating shaft is provided in the middle of the gear disk. The rotating shaft passes through the gear disk and is fixed on the bracket (7). The top end of the clamping block contacts the brake lock block (1), and the bottom end is fixed on the gear disk.

8. The secondary brake linkage device for the oil pumping unit according to claim 7, characterized in that, The bottom of the clamping block is U-shaped and the size of the U-shaped opening matches the rotating shaft. The two ends of the U-shape are fixed to both sides of the rotating shaft.

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