An outer embracing type electric brake device for beam pumping unit

Abstract

The utility model relates to a kind of outer embrace type electric brake device of beam pumping unit.The brake device includes pin shaft one, cam piece, pin shaft two, adjusting rod, pin shaft three, electric telescopic device, pin shaft four, connecting seat, pull rod cam, brake shoe and brake shoe pin shaft;The upper portion of cam piece is connected with pull rod cam and brake shoe pin shaft by pin shaft one, the lower portion of cam piece is connected with adjusting rod one end by pin shaft two, the other end of adjusting rod is connected with electric telescopic device one end by pin shaft three, the other end of electric telescopic device is connected with connecting seat by pin shaft four.The utility model is simple in structure, convenient to use, changes original manual operation into electric operation, reduces operator's labor difficulty and intensity, improves operator's safety, reduces pumping unit production manufacturer manufacturing difficulty.

Description

Technical Field

[0001] This utility model relates to a braking device, and more particularly to an external electric braking device for a walking beam pumping unit. Background Technology

[0002] In oilfield pumping, a braking device must be installed on the pumping unit. The braking device of the walking beam pumping unit is generally divided into an external clamping structure and an internal expansion structure. According to GB / T29021 "Petroleum and Natural Gas Drilling and Production Equipment Walking Beam Pumping Unit", the braking device should have sufficient braking capacity to withstand the torque applied by the crank at any position under the maximum allowable balance torque of the pumping unit. When the pumping unit suddenly disengages from the sucker rod string under normal operating conditions, the braking device should be able to stop the pumping unit.

[0003] The commonly used external braking system in oil fields is a manual external braking system. It mainly consists of a brake lever, brake lever seat, support, long and short rocker arms, pull rod, pull rod cam, brake shoes, and brake wheel. When power is off, regardless of the crank position, pulling the brake lever drives the pull rod and pull rod cam, causing the brake to engage with the brake wheel, resulting in rapid, smooth, and reliable braking. The braking force does not exceed 150N. This braking device provides uniform, smooth, and reliable braking, but it requires manual on-site operation, posing a certain degree of operational risk. Furthermore, the device has numerous components, exceeding 50 parts, resulting in a complex structure and numerous manufacturing processes. Utility Model Content

[0004] The purpose of this invention is to provide an external electric brake device for a beam pumping unit to solve the problems in the prior art.

[0005] The technical solution of this utility model is: an external electric brake device for a beam pumping unit, wherein the brake device includes a first pin, a cam, a second pin, an adjusting rod, a third pin, an electric telescopic device, a fourth pin, a connecting seat, a pull rod cam, a brake shoe, and a brake shoe pin.

[0006] The upper part of the cam component is connected to the pull rod cam and brake shoe pin through a first pin, the lower part of the cam component is connected to one end of the adjusting rod through a second pin, the other end of the adjusting rod is connected to one end of the electric telescopic device through a third pin, and the other end of the electric telescopic device is connected to the connecting seat through a fourth pin.

[0007] Furthermore, the cam component consists of two parallel and symmetrically placed cam plates, a support plate in the middle, and round steel.

[0008] Furthermore, each end of the adjusting rod has a connecting hole, and the length of the adjusting rod can be adjusted by rotating the thread.

[0009] Furthermore, the electric telescopic device is a wired or wirelessly controlled telescopic device.

[0010] Furthermore, the connecting seat is welded from a base plate and two angle steel ear plates, with one pin hole drilled on each of the two angle steels, and one elongated hole drilled on the base plate of the connecting seat.

[0011] The advantages of this invention are: simple structure, reducing the original 50+ parts to 4 components, and these 4 components are simple in structure and easy to manufacture. The adjusting rod and the electric telescopic device are standard parts that can be purchased commercially.

[0012] The working principle is simple and the operation is convenient: the forward, stop, and reverse buttons can be used to brake, stop, and release the brake; the brake can also be linked to the control cabinet button. When the pumping unit is powered off, the electric brake is activated at the same time, and the electric telescopic device extends to perform the braking action. Before the pumping unit starts, the electric telescopic device retracts, the brake is released, and the pumping unit starts.

[0013] Electric braking devices reduce the workload and intensity for operators, and improve their safety. Operators no longer need to pull the brake handle on the pumping unit base; they can simply press a button to brake and release the brake, making it convenient, quick, safe, and reliable. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] In the diagram, 1 is pin one, 2 is cam component, 3 is pin two, 4 is adjusting rod, 5 is pin three, 6 is electric telescopic device, 7 is pin four, 8 is connecting seat, 9 is pull rod cam, 10 is brake shoe, and 11 is brake shoe pin. Detailed Implementation

[0016] An external electric braking device for a beam pumping unit, the braking device comprising a first pin 1, a cam 2, a second pin 3, an adjusting rod 4, a third pin 5, an electric telescopic device 6, a fourth pin 7, a connecting seat 8, a pull rod cam 9, a brake shoe 10, and a brake shoe pin 11.

[0017] The upper part of the cam component 2 is connected to the pull rod cam 9 and the brake pad pin 11 via a first pin 1. The lower part of the cam component 2 is connected to one end of the adjusting rod 4 via a second pin 3. The other end of the adjusting rod 4 is connected to one end of the electric telescopic device 6 via a third pin 5. The other end of the electric telescopic device 6 is connected to the connecting seat 8 via a fourth pin 7.

[0018] The cam component 2 consists of two parallel and symmetrically placed cam plates, a middle support plate, and round steel. During manufacturing, it is required that the two cam plates be straight, and that the end face of the cam component 2 be in smooth contact with the brake pad 10 of the pumping unit and be aligned.

[0019] The adjusting rod 4 has connecting holes at both ends, and the length of the adjusting rod 4 can be adjusted by rotating the thread.

[0020] The electric telescopic device 6 is a wired or wireless control telescopic device. Adding an electric telescopic device circuit to the pumping unit's electrical control cabinet ensures that the braking and pumping unit start-up and stop are linked and controllable.

[0021] The connecting seat 8 is welded from a base plate and two angle steel ear plates. Each of the two angle steels has a pin hole drilled in it, and the base plate of the connecting seat 8 has a long hole drilled in it. This long hole ensures that the width direction of the entire device is aligned with the axis of the brake shoe 10, and that there is no force component in the width direction. This long hole is connected to the pumping unit base using the original connecting bolts of the reducer base, thereby fixing the electric brake device of the pumping unit to the pumping unit.

[0022] The working process of this utility model is as follows: After connecting all parts, check that the width position of the electric telescopic brake device is consistent with the position of the brake shoe axis. Tighten the connecting bolt group on the connecting seat 8, adjust the electric telescopic device 6 to the retracted position, rotate the threads at both ends of the adjusting rod 4 to adjust the length of the adjusting rod 4, so that the cam part 2 is in contact with the brake shoe but in a loose state.

[0023] When the pumping unit needs to be stopped, press the "Stop" button on the pumping unit's electrical control cabinet. The pumping unit will stop immediately after power is cut off. At the same time, the electric brake device will activate, and the electric telescopic device 6 will begin to extend at a constant speed. Through the adjusting rod 4, it will drive the cam component 2 to rotate around the axis of pin 1. The radius of the cam will gradually increase, compressing the brake shoes and thus engaging the braking action. The electric telescopic device 6 will stop extending to a certain position, at which point it will be in the braked state. When the pumping unit needs to be started, first activate the electric telescopic brake device 6 to retract it. Once the pumping unit brake shoes are in the relaxed state, then start the pumping unit to rotate.

[0024] The above-mentioned "engaging" and "releasing" operations of the electric brake can also be operated directly with the remote control, which is convenient and reliable.

[0025] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] In this utility model, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An external beam-type electric brake device for a beam pumping unit, characterized by: The braking device includes a first pin (1), a cam (2), a second pin (3), an adjusting rod (4), a third pin (5), an electric telescopic device (6), a fourth pin (7), a connecting seat (8), a pull rod cam (9), a brake shoe (10), and a brake shoe pin (11). The upper part of the cam component (2) is connected to the pull rod cam (9) and the brake pad pin (11) through the first pin (1). The lower part of the cam component (2) is connected to one end of the adjusting rod (4) through the second pin (3). The other end of the adjusting rod (4) is connected to one end of the electric telescopic device (6) through the third pin (5). The other end of the electric telescopic device (6) is connected to the connecting seat (8) through the fourth pin (7).

2. The external embrace type electric brake device of a beam pumping unit according to claim 1, characterized in that: The cam component (2) consists of two parallel and symmetrically placed cam plates, a support plate in the middle, and round steel.

3. The external embrace type electric brake device of a beam pumping unit according to claim 1, characterized in that: The adjusting rod (4) has connecting holes at both ends, and the length of the adjusting rod (4) can be adjusted by rotating the thread.

4. The external embrace type electric brake device of a beam pumping unit according to claim 1, characterized in that: The electric telescopic device (6) is a wired or wireless control telescopic device.

5. The external electric brake device for a beam pumping unit according to claim 1, characterized in that: The connecting seat (8) is welded from a base plate and two angle steel ear plates. Each of the two angle steels has a pin hole drilled in it, and the base plate of the connecting seat (8) has a long hole drilled in it.

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