CN210318273U

CN210318273U - Double-safety brake handle of oil pumping unit

Info

Publication number: CN210318273U
Application number: CN201921099139.0U
Authority: CN
Inventors: 王毅; 徐广生
Original assignee: Tianjin Wuyi Electromechanical Equipment Co ltd
Current assignee: Tianjin Wuyi Electromechanical Equipment Co ltd
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-04-14
Anticipated expiration: 2029-07-12

Abstract

The utility model relates to a dual fail-safe brake handle of beam-pumping unit, characterized by: the ratchet wheel device comprises a base, ratchet wheels, pawls, a pull rod and a handle, wherein the base is fixedly connected with a ratchet wheel shaft, the ratchet wheel shaft is connected with a round hole in the lower portion of the handle in a sliding mode, the front end and the rear end of the ratchet wheel shaft are fixedly connected with the ratchet wheels respectively, the pawls in contact with the ratchet wheels are arranged on the two sides of the handle corresponding to the positions above the ratchet wheels, and the positions of the ratchet wheels are set by angles of half ratchets different from each other. Has the advantages that: the utility model discloses the ratchet adopts standard ratchet, and simple structure is reliable, low cost. The left ratchet wheel and the right ratchet wheel have a half ratchet angle difference, so that the braking position is more accurate, and the double-insurance effect is achieved. The whole structure is simple, and the manufacture and the operation are easy.

Description

Double-safety brake handle of oil pumping unit

Technical Field

The utility model belongs to the petroleum machinery field especially relates to a dual fail-safe brake handle of beam-pumping unit.

Background

The brake handle of the current oil pumping unit generally adopts a mechanism of two special-shaped ratchet plates and similar pawls. In order to prevent misoperation, a fastening bolt is additionally arranged at the movable part of the ratchet, and the fastening bolt needs to be tightened after braking is finished so as to ensure that the ratchet cannot be separated from the gear, thereby eliminating the hidden trouble of misoperation. Although the structure has high reliability, the special-shaped ratchet plate has very high processing cost and complex operation, and meanwhile, the pumping unit runs in the field for a long time, the bolt thread rusts, the bolt thread loses the function and has potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model relates to an overcome not enough among the prior art, provide a dual fail safe brake handle of beam-pumping unit, two standard type ratchets about the adoption differ the structure of half ratchet angle, can guarantee that the brake position is accurate, play dual fail safe's effect again.

The utility model discloses a realize above-mentioned purpose, realize through following technical scheme, a dual fail-safe brake handle of beam-pumping unit, characterized by: the ratchet wheel device comprises a base, ratchet wheels, pawls, a pull rod and a handle, wherein the base is fixedly connected with a ratchet wheel shaft, the ratchet wheel shaft is connected with a round hole in the lower portion of the handle in a sliding mode, the front end and the rear end of the ratchet wheel shaft are fixedly connected with the ratchet wheels respectively, the pawls in contact with the ratchet wheels are arranged on the two sides of the handle corresponding to the positions above the ratchet wheels, and the positions of the ratchet wheels are set by angles of half ratchets different from each other.

The base is vertically and fixedly connected with support lug plates which are parallel to each other, a ratchet shaft is fixedly connected between the support lug plates, a pawl is connected to a handle through a pawl shaft 7 in a pin mode, the pawl rotates around the pawl shaft, a pull rod pin is arranged at the far end of the pawl 6, and pull rods are hinged to two ends of the pull rod pin.

The pull rod pin is provided with a spring, and the other end of the spring is fixed below the handle through the spring pin.

And a pull rod ear plate is arranged on the handle, and a brake pull rod is pinned on the pull rod ear plate.

The handle is characterized in that a pressing handle is arranged at the upper end of the handle, the lower end of the pressing handle is hinged with the pull rod through a rotating pin, the pressing handle is hinged with the handle through a pressing handle pin, and the pressing handle can rotate around the pressing handle pin.

Has the advantages that: compared with the prior art, the utility model discloses the ratchet adopts standard ratchet, and simple structure is reliable, low cost. The left ratchet wheel and the right ratchet wheel have a half ratchet angle difference, so that the braking position is more accurate, and the double-insurance effect is achieved. The whole structure is simple, and the manufacture and the operation are easy.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a left side view of fig. 1.

In the figure: 1. the handle pressing device comprises a pressing handle 2, a pressing handle pin 3, a rotating pin 4, a pull rod 5, a handle 6, a pawl 7, a pawl shaft 8, a ratchet wheel 9, a ratchet wheel shaft 10 and a support lug plate. 11. The pull rod ear plate 12, the pull rod pin 13, the spring 14, the spring pin 15 and the base.

Detailed Description

The following detailed description of the embodiments according to the present invention with reference to the preferred embodiments is as follows:

referring to the attached drawings in detail, the embodiment discloses a double-insurance brake handle of an oil pumping unit, wherein a base 15 is installed on a chassis of the oil pumping unit, support lug plates 10 are welded on the base 15, a ratchet shaft 9 is fixedly connected between the two lug plates, a handle 5 is a long strip plate-shaped handle, and the lower part of the handle is sleeved on the ratchet shaft 9 in a hollow mode and can rotate around the ratchet shaft. Two ratchet wheels 8 are fixed on the ratchet wheel shafts at two sides of the handle 5, and the angle difference of the two ratchet wheels is half of the corresponding central angle of the ratchet. The positions of the ratchets are set in such a way that the two ratchets are mutually different by half of ratchets. The handle 5 is located the ratchet top position both sides and is equipped with pawl 6 and ratchet cooperation, and pawl 6 passes through pawl axle 7 and connects on handle 5, and the pawl can rotate around the pawl axle. The far end of the pawl 6 is provided with a pull rod pin 12, and the pull rods 4 on the two sides are hinged with the pawl through the pull rod pin 12. A spring 13 is arranged in the middle of the pull rod pin, and the other end of the spring 13 is fixed below the handle through a spring pin 14. The handle is provided with a pull rod lug 11 for connecting a brake pull rod (not shown). The upper end of the handle is provided with a pressing handle 1, the lower part of the handle is provided with a pressing handle pin 2 which is used for hinging the pressing handle 1 with the handle 5, and the pressing handle 1 can rotate around the pin 2. The lower end of the pressing handle 1 is hinged with a pull rod 4 through a rotating pin 3.

Principle of operation

The braking is realized by moving the handle 5 to the left side by hand and pulling the brake pull rod by the pull rod ear plate 11. During pulling, the ratchet is kept in contact with the ratchet under the dual action of gravity and the spring. When the brake is in place, the handle rotates reversely because the pawl is buckled into the ratchet wheel, so that the brake state can be kept. When the brake needs to be released, the hand is pressed to press the handle 1, the pawl is lifted through the pull rod 4, the one-way motion state is released, meanwhile, the handle 5 is pushed rightwards, the brake pull rod is reset, and the brake state is released. A standard ratchet wheel is adopted as a unidirectional moving part; the angle difference of the left ratchet wheel and the right ratchet wheel is half a tooth, so that the double-insurance function is achieved, and the pawl keeps in contact with the ratchet wheels under the action of the self weight of the pawl and the tension spring.

The above detailed description of the dual safety brake handle of the pumping unit with reference to the embodiments is illustrative and not restrictive, and several embodiments can be enumerated according to the limited scope, so that changes and modifications without departing from the general concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. A double-insurance brake handle of a pumping unit is characterized in that: the ratchet wheel device comprises a base, ratchet wheels, pawls, a pull rod and a handle, wherein the base is fixedly connected with a ratchet wheel shaft, the ratchet wheel shaft is connected with a round hole in the lower portion of the handle in a sliding mode, the front end and the rear end of the ratchet wheel shaft are fixedly connected with the ratchet wheels respectively, the pawls in contact with the ratchet wheels are arranged on the two sides of the handle corresponding to the positions above the ratchet wheels, and the positions of the ratchet wheels are set by angles of half ratchets different from each other.

2. The double-insurance brake handle of the oil pumping unit according to claim 1, characterized in that: the base is vertically and fixedly connected with support lug plates which are parallel to each other, a ratchet shaft is fixedly connected between the support lug plates, a pawl is connected to a handle through a pawl shaft, the pawl rotates around a pawl shaft, a pull rod pin is arranged at the far end of the pawl, and pull rods are hinged to two ends of the pull rod pin.

3. The double-insurance brake handle of the oil pumping unit according to claim 2, characterized in that: the pull rod pin is provided with a spring, and the other end of the spring is fixed below the handle through the spring pin.

4. The double-insurance brake handle of the oil pumping unit according to claim 1, characterized in that: and a pull rod ear plate is arranged on the handle, and a brake pull rod is pinned on the pull rod ear plate.

5. The double-insurance brake handle for the oil pumping unit according to claim 1 or 4, characterized in that: the handle is characterized in that a pressing handle is arranged at the upper end of the handle, the lower end of the pressing handle is hinged with the pull rod through a rotating pin, the pressing handle is hinged with the handle through a pressing handle pin, and the pressing handle can rotate around the pressing handle pin.