A beam-pumping unit dead brake device
By designing a device that includes a dead brake hook, a pull rod, a sliding hinge block, and an electrical button, single-person operation of braking and dead braking of a beam pumping unit was achieved. This solves the safety risks and high costs associated with the need for two-person operation in existing technologies, and improves operational efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA PETROLEUM & CHEMICAL CORP
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-14
AI Technical Summary
The existing dead brake device for beam pumping units requires two people to operate, which poses safety risks and high costs, and it is difficult to disengage the brake hook when the pump slides.
Design a device that includes a brake hook, a pull rod, a sliding block, a linkage mechanism, and a brake operating lever. Utilize an elastic structure and an electrical button to enable single-person operation of the brake and brake, and solve the problem of the hook getting stuck by electrically controlling the rotation of the brake wheel.
It enables single-person operation of the brake and the dead brake, reduces safety risks and production costs, improves operational efficiency, and reduces the difficulty of disengaging the hook.
Smart Images
Figure CN224497191U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the brake of a beam pumping unit, specifically to a dead brake device for a beam pumping unit. Background Technology
[0002] When performing maintenance or other work on a beam pumping unit, it is necessary to stop and brake. To stop the unit: one person operates the pumping unit brake lever, which engages the brake wheel of the braking device to bring the pumping unit to a stop. Another person then operates the dead brake device, engaging the dead brake hook into the brake wheel's hub groove to prevent movement and ensure safe stopping. To release the brake: one person operates the dead brake device, disengaging the dead brake hook from the brake wheel's hub groove. The other person then operates the pumping unit brake lever, engaging the brake wheel of the braking device to release the brake.
[0003] Currently, the dead braking device has two problems: 1) The operating end of the dead braking device is located near the moving parts of the pumping unit, which is dangerous for personnel to operate. In addition, because the operating end of the dead braking device is far from the pumping unit brake handle, two people must work together to perform braking and dead braking operations, which consumes manpower; 2) After the dead braking hook is engaged in the hub groove of the brake wheel, if there is slippage or poor handbrake sensitivity, the side of the dead braking hook and the side wall of the hub groove will abut against each other, and the dead brake will be under load, making it difficult to lift the dead braking hook. Only prying with a crowbar, turning the belt, or even crane assistance can remove the dead braking hook, which not only affects the well opening rate of the pumping unit, but also increases production costs and poses a significant safety risk. Utility Model Content
[0004] The purpose of this invention is to provide a dead braking device for a beam pumping unit, which allows one person to perform braking and dead braking operations safely and reliably.
[0005] The technical solution adopted in this utility model is:
[0006] A dead brake device for a beam pumping unit includes a dead brake hook, a pull rod, a sliding block, a linkage mechanism, and a dead brake operating lever. The dead brake hook is swayably installed, with one end capable of engaging and disengaging from the brake hub groove, and the other end serving as the operating end. The pull rod cooperates with a vertical guide structure. The sliding block is loosely fitted onto the pull rod and hinged to the operating end of the dead brake hook. The upper and lower sides of the sliding block on the pull rod are respectively provided with an upper limit member and a lower limit member for pushing the sliding block using an elastic structure. The dead brake operating lever is connected to the pull rod through a linkage mechanism and can drive the pull rod to move. The dead brake operating lever is located near the pumping unit brake handle and has a tightened position and a loosened position. In the tightened position, the dead brake operating lever drives the pull rod upward, and the lower limit member pushes the sliding block to engage the dead brake hook in the brake hub groove. In the loosened position, the dead brake operating lever drives the pull rod downward, and the upper limit member pushes the sliding block to disengage the dead brake hook from the brake hub groove.
[0007] Preferably, it also includes an electrical button for controlling the forward and reverse rotation of the brake wheel, the electrical button being located inside the pumping unit control cabinet.
[0008] Preferably, the electrical button is electrically connected to the frequency converter inside the pumping unit control cabinet, and the frequency converter is electrically connected to the motor of the brake wheel.
[0009] Preferably, the upper limit component includes an upper stop block and an upper spring, the upper stop block is fixed on the pull rod, and the upper spring is loosely fitted on the pull rod with its upper end connected to the lower side of the upper stop block; the lower limit component includes a lower stop block and a lower spring, the lower stop block is fixed on the pull rod, and the lower spring is loosely fitted on the pull rod with its lower end connected to the upper side of the lower stop block.
[0010] Preferably, the upper and lower springs are made of silicon manganese spring steel.
[0011] Preferably, the sliding block includes a sliding sleeve, a hinge shaft, and a connecting arm. The sliding sleeve is loosely fitted on the pull rod, the hinge shaft is fitted into the shaft hole of the dead brake hook operating end, and the connecting arm is connected between the sliding sleeve and the hinge shaft.
[0012] Preferably, baffles are provided at the upper and lower ends of the sliding sleeve.
[0013] Preferably, the linkage mechanism includes a crossbar and a rocker arm, the rocker arm being oscillatingly mounted, the two ends of the crossbar being hinged to the dead brake operating lever and one end of the rocker arm respectively, and the other end of the rocker arm being hinged to the pull rod.
[0014] Preferably, the crossbar is made of square or round steel pipe, and is made of high-strength, high-quality carbon steel.
[0015] Preferably, the dead brake hook is installed on the pumping unit gearbox cover plate, the vertical guide structure of the pull rod is installed on the support plate, and the support plate is connected to the pumping unit gearbox cover plate.
[0016] The beneficial effects of this utility model are:
[0017] In this device, tightening and loosening the dead brake can be achieved simply by operating the dead brake lever to switch positions. Since the dead brake lever is located near the pumping unit brake handle, one person can perform both braking and dead brake operations, while keeping personnel away from the moving parts of the pumping unit, ensuring safe operation. In this device, the upper and lower limit components use elastic elements to push the sliding hinge block, which can ensure that the dead brake is tightened. When the dead brake hook is not directly engaged in the brake hub groove, simply loosen the pumping unit brake handle slightly, and the dead brake hook will instantly engage in the groove under the action of the elastic structure. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of a dead brake device for a beam pumping unit in the released position, as described in an embodiment of this application.
[0020] Figure 2 yes Figure 1 A magnified view of a portion of the image.
[0021] Figure 3 This is a schematic diagram of a dead brake device for a beam pumping unit in the tensioned position, as described in an embodiment of this application.
[0022] In the diagram: 1-Closed brake lever; 2-Horizontal bar; 3-Rocker arm; 4-Pull rod; 5-Oil pump reducer cover; 6-Brake wheel; 7-Brake wheel hub groove; 8-Closed brake hook; 9-Support plate; 10-Upper limit positioner; 11-Sliding hinge block; 12-Lower limit positioner; 13-Upper stop block; 14-Upper spring; 15-Lower stop block; 16-Lower spring; 17-Sliding sleeve; 18-Hinge shaft; 19-Connecting arm; 20-Baffle plate. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0024] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0026] In the description of this application, it should be noted that the terms "upper", "lower", "vertical", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0027] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0028] The features and performance of this application will be further described in detail below with reference to the embodiments.
[0029] Example 1
[0030] This embodiment discloses a dead brake device for a beam pumping unit, such as... Figures 1 to 3 As shown, the system includes a dead brake hook 8, a pull rod 4, a sliding block 11, a linkage mechanism, and a dead brake operating lever 1. The dead brake hook 8 is swayably mounted, with one end capable of engaging and disengaging from the brake hub groove 7, and the other end serving as the operating end. The pull rod 4 engages with a vertical guide structure. The sliding block 11 is loosely fitted onto the pull rod 4 and hinged to the operating end of the dead brake hook 8. The upper and lower sides of the sliding block 11 on the pull rod 4 are respectively provided with an upper limit member 10 and a lower limit member 12 for pushing the sliding block 11 using an elastic structure. The dead brake operating lever 1 is connected to the pull rod 4 via a linkage mechanism and can drive the pull rod 4 to move. The dead brake operating lever 1 is located near the pumping unit brake handle and has a tightened position and a loosened position. Figure 1 and Figure 2 As shown, in the released position, the dead brake operating lever 1 moves the pull rod 4 downward, and the upper limit component 10 pushes the sliding hinge block 11, causing the dead brake hook 8 to disengage from the brake hub groove 7. Figure 3 As shown, in the tensioned position, the dead brake operating lever 1 drives the pull rod 4 to move upward, and the lower limit piece 12 pushes the sliding hinge block 11 to drive the dead brake hook 8 to engage with the brake hub groove 7.
[0031] In this device, tightening and loosening the dead brake can be achieved simply by operating the dead brake lever 1 to switch positions. Since the dead brake lever 1 is located near the pumping unit brake handle, both braking and dead brake operations can be performed by one person, keeping personnel away from the moving parts of the pumping unit, ensuring operational safety. In this device, the upper limit member 10 and the lower limit member 12 utilize elastic elements to push the sliding hinge block 11, ensuring the dead brake is tightened. When the dead brake hook 8 is not directly engaged in the brake hub groove 7, simply loosening the pumping unit brake handle slightly will cause the dead brake hook 8 to instantly engage in the groove under the action of the elastic structure. After testing, using this device reduced the number of people required to operate the dead brake from two to one, and the operation time from 10 minutes to 2 minutes.
[0032] like Figures 1 to 3 As shown, in this embodiment, preferably: the upper limit member 10 includes an upper stop block 13 and an upper spring 14, the upper stop block 13 is fixed on the pull rod 4, and the upper spring 14 is loosely fitted on the pull rod 4 with its upper end connected to the lower side of the upper stop block 13; the lower limit member 12 includes a lower stop block 15 and a lower spring 16, the lower stop block 15 is fixed on the pull rod 4, and the lower spring 16 is loosely fitted on the pull rod 4 with its lower end connected to the upper side of the lower stop block 15; wherein, the upper spring 14 and the lower spring 16 are preferably made of silicon manganese spring steel.
[0033] like Figures 1 to 3 As shown, in this embodiment, preferably: the sliding block 11 includes a sliding sleeve 17, a hinge shaft 18 and a connecting arm 19. The sliding sleeve 17 is loosely fitted on the pull rod 4, the hinge shaft 18 is fitted in the shaft hole of the operating end of the dead brake hook 8, and the connecting arm 19 is connected between the sliding sleeve 17 and the hinge shaft 18; wherein, the upper and lower ends of the sliding sleeve 17 are provided with baffles 20, which can increase the contact area with the elastic structure.
[0034] like Figure 1 and Figure 3 As shown, in this embodiment, preferably, the linkage mechanism includes a crossbar 2 and a rocker arm 3. The rocker arm 3 is swayably mounted. The two ends of the crossbar 2 are respectively hinged to the dead brake operating lever 1 and one end of the rocker arm 3, and the other end of the rocker arm 3 is hinged to the pull rod 4. The crossbar 2 is preferably made of square steel pipe or round steel pipe, and preferably made of high-strength high-quality carbon steel.
[0035] like Figure 1 and Figure 3 As shown, in this embodiment, preferably: the dead brake hook 6 is installed on the pumping unit gearbox cover plate 5, the vertical guide structure of the pull rod 4 is installed on the support plate 9, and the support plate 9 is connected to the pumping unit gearbox cover plate 5.
[0036] Example 2
[0037] This embodiment discloses another type of dead brake device for a beam pumping unit. The difference between this device and the first embodiment is that it also includes an electrical button for controlling the forward and reverse rotation of the brake wheel. This electrical button is located inside the pumping unit control cabinet. When the side of the dead brake hook 8 abuts against the side wall of the brake wheel hub groove 7, and the dead brake is under load, making it difficult to lift the dead brake hook 8, the brake wheel 6 can be controlled to rotate forward and backward according to the jamming position (front or rear). After the brake wheel 6 rotates a certain angle, combined with the elastic effect of the elastic structure, the jammed dead brake hook 8 can be instantly disengaged. This eliminates the need for pry bars, belt manipulation, or even crane assistance to remove the dead brake hook, significantly saving time and costs.
[0038] In this embodiment, preferably: the electrical button is electrically connected to the frequency converter in the pumping unit control cabinet, and the frequency converter is electrically connected to the motor of the brake wheel 6; generally, the pumping unit control cabinet is equipped with a frequency converter, which can control the speed and direction of the motor by changing the frequency and phase of the output power. The electrical button is connected to the control circuit of the frequency converter. When the electrical button is operated, different control signals can be sent to the frequency converter, thereby controlling the motor to rotate forward or backward.
[0039] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
Claims
1. A dead brake device for a beam pumping unit, characterized in that: The system includes a dead brake hook, a pull rod, a sliding block, a linkage mechanism, and a dead brake operating lever. The dead brake hook is swayably mounted, with one end capable of engaging and disengaging from the brake hub groove, and the other end serving as the operating end. The pull rod engages with a vertical guide structure. The sliding block is loosely fitted onto the pull rod and hinged to the operating end of the dead brake hook. The upper and lower sides of the sliding block on the pull rod are respectively provided with upper and lower limit members for using an elastic structure to push the sliding block. The dead brake operating lever is connected to the pull rod via a linkage mechanism and can drive the pull rod to move. The dead brake operating lever is located near the pumping unit brake handle and has a tightened position and a loosened position. In the tightened position, the dead brake operating lever drives the pull rod upward, and the lower limit member pushes the sliding block to engage the dead brake hook into the brake hub groove. In the loosened position, the dead brake operating lever drives the pull rod downward, and the upper limit member pushes the sliding block to disengage the dead brake hook from the brake hub groove.
2. The dead braking device for a beam pumping unit as described in claim 1, characterized in that: It also includes electrical buttons for controlling the forward and reverse rotation of the brake wheel, which are located inside the pumping unit control cabinet.
3. The dead braking device for a beam pumping unit as described in claim 2, characterized in that: The electrical buttons are electrically connected to the frequency converter inside the pumping unit control cabinet, and the frequency converter is electrically connected to the motor of the brake wheel.
4. A dead brake device for a beam pumping unit as described in any one of claims 1 to 3, characterized in that: The upper limit component includes an upper stop block and an upper spring. The upper stop block is fixed on the pull rod, and the upper spring is loosely fitted on the pull rod with its upper end connected to the lower side of the upper stop block. The lower limit component includes a lower stop block and a lower spring. The lower stop block is fixed on the pull rod, and the lower spring is loosely fitted on the pull rod with its lower end connected to the upper side of the lower stop block.
5. The dead braking device for a beam pumping unit as described in claim 4, characterized in that: The upper and lower springs are made of silicon manganese spring steel.
6. A dead brake device for a beam pumping unit as described in any one of claims 1 to 3, characterized in that: The sliding block includes a sliding sleeve, a hinge shaft, and a connecting arm. The sliding sleeve is loosely fitted on the pull rod, the hinge shaft is fitted into the shaft hole at the operating end of the dead brake hook, and the connecting arm connects the sliding sleeve and the hinge shaft.
7. The dead braking device for a beam pumping unit as described in claim 6, characterized in that: The upper and lower ends of the sliding sleeve are equipped with baffles.
8. A dead brake device for a beam pumping unit as described in any one of claims 1 to 3, characterized in that: The linkage mechanism includes a crossbar and a rocker arm. The rocker arm is mounted oscillatingly. The two ends of the crossbar are respectively hinged to the dead brake operating lever and one end of the rocker arm, and the other end of the rocker arm is hinged to the pull rod.
9. The dead braking device for a beam pumping unit as described in claim 8, characterized in that: The crossbars are made of square or round steel tubes, using high-strength, high-quality carbon steel.
10. A dead brake device for a beam pumping unit as described in any one of claims 1 to 3, characterized in that: The dead brake hook is installed on the pumping unit gearbox cover plate, and the vertical guide structure of the tie rod is installed on the support plate, which is connected to the pumping unit gearbox cover plate.