Novel beam-pumping unit locking device

Abstract

The utility model relates to the technical field of brake of a speed reducer of an oil pumping unit, in particular to a novel locking device of a beam-pumping unit. According to the technical scheme, the device comprises a locking claw, a speed reducer brake wheel and an external embracing type brake device, the locking claw is movably installed on the upper portion of the speed reducer brake wheel, the upper end of a vertical pull rod is movably connected with the outer end of the locking claw, and the lower end of the vertical pull rod is movably connected to a fixed rocker arm of a rocker arm mechanism; the lower end of the sliding rocker arm is movably connected with one end of a horizontal pull rod, and the other end of the horizontal pull rod is movably connected with a handle of the locking claw brake handle assembly. The brake device has the advantages that the brake wheel does not need to be replaced, and an operator can achieve brake shutdown operation through an original external-embracing type brake device; when long-time maintenance is needed, the brake handle assembly of the brake locking device on the other side is controlled, the locking claw is inserted into the brake wheel groove, the long-time locking state is guaranteed, and the brake device is safe, reliable, simple in structure and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pumping unit reducer brakes, in particular to a novel beam type oil pumping unit locking device. Background Art

[0002] In the rod pumping system, the beam pumping unit is widely used due to its simple structure and reliable performance. The traditional beam pumping unit is braked by the external brake device at the end of the reducer driving shaft (refer to Figure 1 ), the locking claw is located above the reducer brake wheel groove, and the external brake contains brake pads, reducer brake wheels, and is connected to the brake handle at the rear of the pump. When the operator inspects the pump, it is necessary to pull the brake handle for a long time. After the brake pads hold the reducer brake wheel, the operator climbs up to the upper part of the reducer of the pump, and then manually inserts the locking claw into the reducer brake wheel groove, thereby achieving a long-term shutdown brake for maintenance. The problem is that it is necessary to manually climb to the side or upper part of the reducer of the pump for manual operation, which is a high-altitude operation. On the one hand, when releasing the locking claw, it is easy to get a hand pinch or a safety accident caused by the movement of the balance block. On the other hand, the locking claw may fall off, resulting in brake failure, and then a serious accident of operator casualties may occur.

[0003] The Chinese patent number is 201210096875.7, and the patent name is "Oil Pump Brake Locking Device". On the basis of the existing hand brake, a brake locking device is added. The former is for braking, and the latter is for locking. The oil pump brake locking device is connected in sequence by a reduction gearbox brake claw, a connecting plate, a connecting pin, a right-angle arm, a pin shaft, a limit pin, a connecting rod, a rocker arm, a rocker arm shaft, a crank arm, a crank arm seat, a brake wheel, and a brake handle. The brake wheel is processed with 8-12 tooth grooves on its outer edge so that the reduction gearbox brake claw can be stuck in the wheel groove in time when it falls, so as to achieve the braking and locking effect. By adopting the oil pump brake locking device, safe production can be effectively achieved during the shutdown and maintenance of the oil pump. The problem is that the brake wheel needs to be modified, the tooth groove needs to be processed on the outer edge of the brake wheel, and then the existing brake wheel needs to be replaced, which increases the cost of replacement.

[0004] The Chinese patent number is 201210096875.7, and the patent name is "Compound brake operating device for oil pumping unit", which includes an oil pumping unit frame, a base, a pull rod operating device, a brake wheel, a brake wheel axle, a brake drum, a brake cam rod, a safety claw, a brake transmission device and a safety transmission device; the pull rod operating device is fixedly installed on the left part of the base, the pull rod operating device is connected to the left end of the brake cam rod through the brake transmission device, and the pull rod operating device is connected to the middle part of the safety claw through the safety transmission device. The existing problem is that the brake transmission device and the safety transmission device are driven by the pull rod control device at the same time, and the elastic connection device on the brake transmission device is used to realize that the safety claw is locked only after the brake wheel stops when braking, and the brake wheel rotates only after the safety claw is opened when opening, so that the operation of the brake device and the safety device are linked. Compared with the original function, each braking operation is simultaneously locked with the safety. However, the structure slides along the brake guide pin and the safety guide pin along the brake guide groove and the horizontal lower pin groove respectively, so as to complete the linkage between the brake device and the safety device. The structure is complex and delicate. When the oil pump is exposed to wind and sun in the wild, it is easy for the safety claw of the safety device to be out of place, and then the locking failure occurs. It is time-consuming to repair this fault, which is inconsistent with the rugged and durable characteristics of the walking beam oil pump. Utility Model Content

[0005] The purpose of the utility model is to provide a novel locking device for a walking beam oil pump in view of the above-mentioned defects in the prior art. The utility model adds a new brake locking device on the basis of the original external brake device, and there is no need to replace the brake wheel, so that the operator can use the original external brake device to achieve the brake shutdown operation; when long-term maintenance is required, the brake handle assembly of the brake locking device on the other side is controlled, and the long-term locking state is ensured by inserting the locking claw into the brake wheel groove. The utility model is safe and reliable, simple in structure and low in cost.

[0006] The utility model discloses a novel locking device for a beam pumping unit, and the technical scheme thereof is as follows: comprising a locking claw, a reducer brake wheel and an externally-engaged brake device, wherein the locking claw is movably installed on the upper part of the reducer brake wheel, and the reducer brake wheel is tightly braked by the externally-engaged brake device, wherein the locking claw brake handle assembly, a horizontal pull rod, a rocker mechanism and a vertical pull rod are also included, wherein the upper end of the vertical pull rod is movably connected to the outer end of the locking claw, the lower end of the vertical pull rod is movably connected to the fixed rocker of the rocker mechanism, a sliding rocker is installed on the rocker shaft of the rocker mechanism, the lower end of the sliding rocker is movably connected to one end of the horizontal pull rod, and the other end of the horizontal pull rod is movably connected to the lower end of the handle seat of the locking claw brake handle assembly;

[0007] The rocker mechanism includes a support, a sliding rocker, a rocker shaft, and a fixed rocker. The upper end of the sliding rocker is provided with a square hole, and is slidably connected to the rocker shaft through the square hole of the sliding rocker. Supports are respectively installed at both ends of the rocker shaft, and are fixed to the body of the beam pumping unit through the supports. A fixed rocker is installed at one end of the rocker shaft, and is movably connected to the lower end of the vertical tie rod through the fixed rocker.

[0008] The locking pawl brake handle assembly includes a brake handle seat, a bolt shaft, a handle seat, a handle, and a mounting seat. The front end of the brake handle seat is connected to the handle seat through the bolt shaft, the upper end of the handle seat is connected to the handle, the lower rear side of the handle seat is movably connected to the front end of the horizontal pull rod, and the rear end of the brake handle seat is connected to the mounting seat.

[0009] Preferably, the rocker arm shaft is a square rod.

[0010] Preferably, reinforcing ribs are installed between the mounting seat and the side wall of the brake handle seat.

[0011] Preferably, large side holes are respectively provided on both sides of the above-mentioned brake handle seat, and the handle seat is locked by cooperating with a large D-shaped pin and the large side hole; small side holes are respectively provided on both sides of the handle seat, and the handle is locked by cooperating with a small D-shaped pin and the small side hole.

[0012] Preferably, the lower rear side of the handle seat is connected to the front end of the horizontal pull rod through a pin and a pull rod joint.

[0013] Preferably, a square groove is provided at the upper end of the handle seat, and the lower end of the handle is a square structure for being inserted into the square groove.

[0014] Preferably, the above-mentioned large D-shaped pin includes a locking pin body and a semicircular fixing ring, and one end of the locking pin body is movably connected to one end of the semicircular fixing ring.

[0015] The beneficial effects of the utility model are:

[0016] The utility model installs the handle of the locking pawl brake handle assembly on one side of the brake handle of the existing external brake device, which is easy to operate and has two independent systems. By operating the brake handle of the existing external brake device, the brake system is put into a temporary braking state to meet the short-term shutdown needs. When maintenance is carried out and a long-term parking is required, the locking pawl brake handle assembly is controlled to achieve a long-term brake locking state of the reducer brake wheel. The utility model reduces safety hazards through the cooperation of an existing external brake device and a locking pawl control system of the utility model. The utility model is safe and reliable, does not need to replace the reducer brake wheel, has a simple structure, and is low in cost. It is suitable for mass production and assembly of existing walking beam oil pumps. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a structural schematic diagram of an existing walking beam type oil pumping unit brake device;

[0018] Figure 2 It is a structural schematic diagram of the utility model installed on a beam pumping unit;

[0019] Figure 3 It is a structural schematic diagram of the utility model;

[0020] Figure 4 is a schematic diagram of the structure of the locking pawl brake handle assembly in an unbraked state;

[0021] Figure 5 is a schematic diagram of the structure of the locking pawl brake handle assembly during the braking process;

[0022] Figure 6 is a schematic diagram of the structure of the locking pawl brake handle assembly when the brake is locked;

[0023] Figure 7 It is a schematic diagram of the structure of removing the handle;

[0024] Figure 8 It is a structural diagram of the rocker arm mechanism;

[0025] In the above figure: locking pawl brake handle assembly 1, horizontal pull rod 2, rocker arm mechanism 3, vertical pull rod 4, locking pawl 5, reducer brake wheel 6, external brake device 7, brake handle seat 1.1, pull rod joint 1.2, pin 1.3, large D-pin 1.4, bolt shaft 1.5, handle seat 1.6, small D-pin 1.7, handle 1.8, mounting seat 1.9, reinforcement rib 1.10, support 3.1, sliding rocker arm 3.2, rocker arm shaft 3.3, fixed rocker arm 3.4, locking pin body 1.4.1, semicircular fixing ring 1.4.2. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0027] Example 1, reference Figure 2-Figure 8The utility model mentions a novel locking device of a walking beam pumping unit, comprising a locking claw 5, a reducer brake wheel 6 and an externally-engaged brake device 7. The locking claw 5 is movably installed on the upper part of the reducer brake wheel 6, and the reducer brake wheel 6 is clamped and braked by the externally-engaged brake device 7. The utility model is characterized in that it also includes a locking claw brake handle assembly 1, a horizontal pull rod 2, a rocker mechanism 3 and a vertical pull rod 4. The upper end of the vertical pull rod 4 is movably connected to the outer end of the locking claw 5, and the lower end of the vertical pull rod 4 is movably connected to the fixed rocker arm 3.4 of the rocker mechanism 3. A sliding rocker arm 3.2 is installed on the rocker shaft 3.3 of the rocker mechanism 3. The lower end of the rocker arm 3.2 is movably connected to one end of the horizontal pull rod 2, and the other end of the horizontal pull rod 2 is movably connected to the lower end of the handle seat 1.6 of the locking pawl brake handle assembly 1; wherein, a handle 1.8 is installed on the handle seat 1.6 of the locking pawl brake handle assembly 1, and the handle 1.8 is installed on one side of the brake handle of the existing brake system, so that it is convenient to operate the handle 1.8 after operating the brake handle, so that the brake system can continue to start the utility model when it is in a temporary braking state, and realize the long-term brake locking state of the reducer brake wheel 6, which is convenient for repairing or maintaining the walking beam oil pump, and reduces safety hazards through the cooperation of two independent systems.

[0028] Reference Figure 8 The rocker mechanism 3 mentioned in the utility model includes a support 3.1, a sliding rocker arm 3.2, a rocker shaft 3.3, and a fixed rocker arm 3.4. The rocker shaft 3.3 is a square rod body. The upper end of the sliding rocker arm 3.2 is provided with a square hole, and the sliding rocker arm 3.2 is slidably connected to the rocker shaft 3.3 through the square hole of the sliding rocker arm 3.2; supports 3.1 are respectively installed at both ends of the rocker shaft 3.3, and are fixed to the body of the walking beam pumping unit through the supports 3.1. A fixed rocker arm 3.4 is installed at one end of the rocker shaft 3.3, and is movably connected to the lower end of the vertical pull rod 4 through the fixed rocker arm 3.4.

[0029] Reference Figure 4-Figure 7 The locking pawl brake handle assembly 1 mentioned in the utility model includes a brake handle seat 1.1, a bolt shaft 1.5, a handle seat 1.6, a handle 1.8, a mounting seat 1.9 and a reinforcing rib 1.10. The front end of the brake handle seat 1.1 is connected to the handle seat 1.6 through the bolt shaft 1.5, the upper end of the handle seat 1.6 is connected to the handle 1.8, the lower rear side of the handle seat 1.6 is movably connected to the front end of the horizontal pull rod 2, the rear end of the brake handle seat 1.1 is connected to the mounting seat 1.9, and the reinforcing rib 1.10 is installed between the mounting seat 1.9 and the side wall of the brake handle seat 1.1.

[0030] In addition, large side holes are respectively provided on both sides of the above-mentioned brake handle seat 1.1, and the handle seat 1.6 is locked by cooperating with the large side holes through a large D-shaped pin 1.4; small side holes are respectively provided on both sides of the handle seat 1.6, and the handle 1.8 is locked by cooperating with the small D-shaped pin 1.7 and the small side holes.

[0031] The lower rear side of the handle seat 1.6 is connected to the front end of the horizontal pull rod 2 through a pin 1.3 and a pull rod joint 1.2; a square groove is provided at the upper end of the handle seat 1.6, and the lower end of the handle 1.8 is a square structure for being inserted into the square groove, and the upper end of the handle 1.8 is a long strip of metal, and the long strip of metal at the upper end forms a certain angle with the square structure at the lower end, which is convenient for pushing the handle 1.8 forward and backward, thereby driving the movement of the horizontal pull rod 2.

[0032] Reference Figure 5 The large D-shaped pin 1.4 mentioned in the utility model includes a locking pin body 1.4.1 and a semicircular fixing ring 1.4.2. One end of the locking pin body 1.4.1 is movably connected to one end of the semicircular fixing ring 1.4.2, and the function of locking the handle seat 1.6 can be realized by cooperating with the large side holes on both sides of the brake handle seat 1.1.

[0033] When the utility model is used, the following process is included:

[0034] Step 1: Press the stop button of the beam pumping unit and pull the brake handle of the existing external brake device to stop the beam pumping unit, so that the brake system is in a temporary braking state to meet the short-term shutdown needs;

[0035] Step 2: When performing maintenance and it is necessary to park for a long time, the large D-shaped pin 1.4 in the locking claw brake handle assembly 1 of the utility model installed on one side of the brake handle of the existing external holding brake device is removed, and the handle 1.8 on the locking claw brake handle assembly 1 is pulled, and the handle 1.8 drives the horizontal pull rod 2 to move forward, and then drives the rocker mechanism 3 to rotate, and then drives the vertical pull rod 4 to move downward, and then drives the locking claw 5 to move downward and insert into the groove of the reducer brake wheel 6, so as to realize the long-term locking function of the reducer brake wheel 6, and then, the large D-shaped pin 1.4 is passed through the large side holes of the brake handle seat 1.1 and the handle seat 1.6 to fix the position of the handle seat 1.6;

[0036] Step 3: The operator removes the handle 1.8 and the small D-pin 1.7 from the locking claw brake handle assembly 1 and carries them with him to prevent other personnel from misoperating the locking claw brake handle assembly 1 and causing the locking claw 5 to be disengaged and cause a safety accident;

[0037] Step 4: The operator can perform long-term inspection or maintenance of the walking beam pumping unit. When the inspection or maintenance is completed and it is confirmed that there are no other operators in the danger zone, the handle 1.8 is inserted into the handle seat 1.6, and the small D-shaped pin 1.7 is installed on the handle seat 1.6. The large D-shaped pin 1.4 in the locking claw brake handle assembly 1 is removed, and the handle 1.8 on the locking claw brake handle assembly 1 is pushed. The handle 1.8 drives the horizontal pull rod 2 to move backward, and then drives the rocker mechanism 3 to rotate, and then drives the vertical pull rod 4 to move upward, and then drives the locking claw 5 to move upward, so that the locking claw 5 is separated from the reducer brake wheel 6, and the long-term locking state of the reducer brake wheel 6 is released. Then the large D-shaped pin 1.4 passes through the brake handle seat 1.1 and the large side holes of the handle seat 1.6 to fix the position of the handle seat 1.6;

[0038] Step 5: Release the brake handle of the existing external brake device of the beam pumping unit, press the start button of the beam pumping unit, and the beam pumping unit starts to work normally; the utility model adopts two independent systems, which is more secure. In addition, there is no need to replace the reducer brake wheel, which reduces the modification cost and meets the tough, durable and reliable properties of the beam pumping unit.

[0039] Example 2, reference Figure 2-Figure 8 The utility model mentions a new type of walking beam oil pump locking device, including a locking claw 5 and a reducer brake wheel 6, which also includes a locking claw brake handle assembly 1, a horizontal pull rod 2, a rocker mechanism 3 and a vertical pull rod 4. The upper end of the vertical pull rod 4 is movably connected to the outer end of the locking claw 5, and the lower end of the vertical pull rod 4 is movably connected to the fixed rocker arm 3.4 of the rocker mechanism 3. A sliding rocker arm 3.2 is installed on the rocker shaft 3.3 of the rocker mechanism 3. The lower end of the sliding rocker arm 3.2 is movably connected to one end of the horizontal pull rod 2, and the other end of the horizontal pull rod 2 is movably connected to the lower end of the handle 1.8 of the locking claw brake handle assembly 1.

[0040] The difference from Example 1 is:

[0041] The lower end of the handle 1.8 is a square structure, and the handle 1.8 can also adopt an arc structure to complete the function of the utility model.

[0042] The above is only a preferred embodiment of the utility model. Any person skilled in the art may modify the utility model by using the above technical solution or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent transformation based on the technical solution of the utility model shall fall within the scope of protection claimed by the utility model.

Claims

1. A novel locking device for a beam pumping unit, comprising a locking claw (5), a reducer brake wheel (6) and an externally-engaged brake device (7), wherein the locking claw (5) is movably mounted on the upper portion of the reducer brake wheel (6), and the reducer brake wheel (6) is tightly braked by the externally-engaged brake device (7), wherein: It also comprises a locking pawl brake handle assembly (1), a horizontal pull rod (2), a rocker mechanism (3) and a vertical pull rod (4), wherein the upper end of the vertical pull rod (4) is movably connected to the outer end of the locking pawl (5), the lower end of the vertical pull rod (4) is movably connected to the fixed rocker arm (3.4) of the rocker mechanism (3), a sliding rocker arm (3.2) is installed on the rocker arm shaft (3.3) of the rocker mechanism (3), the lower end of the sliding rocker arm (3.2) is movably connected to one end of the horizontal pull rod (2), and the other end of the horizontal pull rod (2) is movably connected to the lower end of the handle seat (1.6) of the locking pawl brake handle assembly (1); The rocker mechanism (3) comprises a support (3.1), a sliding rocker arm (3.2), a rocker shaft (3.3), and a fixed rocker arm (3.4); a square hole is provided at the upper end of the sliding rocker arm (3.2), and the sliding rocker arm (3.2) is slidably connected to the rocker shaft (3.3) through the square hole of the sliding rocker arm (3.2); supports (3.1) are respectively installed at both ends of the rocker shaft (3.3), and the support is fixed to the body of the walking beam pumping unit through the support (3.1); a fixed rocker arm (3.4) is installed at one end of the rocker shaft (3.3), and the fixed rocker arm (3.4) is movably connected to the lower end of the vertical pull rod (4) through the fixed rocker arm (3.4); The locking pawl brake handle assembly (1) comprises a brake handle seat (1.1), a bolt shaft (1.5), a handle seat (1.6), a handle (1.8), and a mounting seat (1.9); the front end of the brake handle seat (1.1) is connected to the handle seat (1.6) via the bolt shaft (1.5); the upper end of the handle seat (1.6) is connected to the handle (1.8); the lower rear side of the handle seat (1.6) is movably connected to the front end of the horizontal pull rod (2); and the rear end of the brake handle seat (1.1) is connected to the mounting seat (1.9).

2. According to claim 1, a novel beam pumping unit locking device is characterized in that: The rocker arm shaft (3.3) is a square rod body.

3. The novel beam pumping unit locking device according to claim 2 is characterized in that: A reinforcing rib (1.10) is installed between the mounting seat (1.9) and the side wall of the brake handle seat (1.1).

4. A novel beam pumping unit locking device according to claim 3, characterized in that: The brake handle seat (1.1) is provided with large side holes on both sides, and the handle seat (1.6) is locked by cooperating with the large side holes through a large D-shaped pin (1.4); the handle seat (1.6) is provided with small side holes on both sides, and the handle (1.8) is locked by cooperating with the small D-shaped pin (1.7).

5. The novel beam pumping unit locking device according to claim 4 is characterized in that: The lower rear side of the handle seat (1.6) is connected to the front end of the horizontal pull rod (2) via a pin (1.3) and a pull rod joint (1.2).

6. A novel beam pumping unit locking device according to claim 4 or 5, characterized in that: The upper end of the handle seat (1.6) is provided with a square groove, and the lower end of the handle (1.8) is a square structure for being inserted into the square groove.

7. A novel beam pumping unit locking device according to claim 6, characterized in that: The large D-shaped pin (1.4) comprises a locking pin body (1.4.1) and a semicircular fixing ring (1.4.2), and one end of the locking pin body (1.4.1) is movably connected to one end of the semicircular fixing ring (1.4.2).

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