Transmission mechanism of pumping unit power part

Abstract

The utility model relates to a transmission mechanism of a power part of a pumping unit, which is used in the field of oil extraction. The device is characterized in that an output shaft of a motor (8) is installed in a shaft hole (71) of a T-shaped coupler (7), a flange (72) of the T-shaped coupler (7) is installed on one side of a connecting drum (6), the other side of the connecting drum (6) is installed on a brake disc (50), and the front portion of an inserting shaft (51) in the middle of the brake disc (50) is installed in a tail cover of a speed reducer (3). The connecting drum has the advantages that power of the motor is transmitted to the speed reducer through the connecting drum made of the elastic material, starting is smoother, noise is low, and vibration is small.

Description

Technical Field

[0001] The utility model relates to the field of oil production, in particular to a transmission mechanism for the power part of a pumping unit used for a pumping unit. Background Art

[0002] In the field of oil production, to pump oil from deep underground into the pipeline and then send it to the transfer station, a pumping unit is first used. The most widely used pumping unit in China is the beam reciprocating type, which converts the circular motion of the motor into the up-and-down linear motion of the sucker rod. There is also a type of pumping unit whose application range is gradually expanding, namely the tower-type pumping unit. It cancels the beam and only has a tower and a platform. It uses a belt and a belt roller to convert the circular motion of a reversible motor into the up-and-down linear motion of the sucker rod. This tower-type pumping unit usually installs the reversible motor and the reducer on the platform at the top of the tower. There is a causal relationship between the height of the tower and the stroke of the sucker rod. The slightly lower tower is about five meters, and towers seven to nine meters high can be seen in many oil fields. Installing and operating equipment weighing several tons at such a height poses harsh requirements on the strength and stability of the tower. A series of problems such as the manufacturing cost of the tower, installation and maintenance costs, and safety risks appear simultaneously. Finally, there is a type of pumping unit that installs the power device on the bottom platform and the reversing device on the top of the tower, thus balancing the requirements for tower manufacturing and maintenance. The power device of the pumping unit mainly consists of a motor and a reducer. The two need to be connected by a transmission mechanism to achieve power transmission and complete the work of the pumping unit.

[0003] Not long ago, the applicant applied for a patent for such technology. The patent number is 202322814689.9, and the name is "Concentric Biaxial Drive Control Equipment for a Pumping Unit". This technology solves the problem of the lower placement of the power device. However, the reducer has a biaxial output. In order to match the double sprockets on both sides of the belt roller, a set of bearings with double sprockets, shaft seats, and chains connecting the reducer also need to be installed at the bottom of the derrick. However, for the transmission mechanism that transmits the power generated by the motor to the reducer, the existing technology is used, which is a buffer block type universal coupling. The buffer block has the problem of aging and increased clearance after being used for a period of time, and there will be uneven phenomena during startup and shutdown. The utility model is an improved technical product developed and trial-produced in response to this problem. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the utility model provides a transmission mechanism for the power part of a pumping unit, and the utility model is introduced to solve the above problems.

[0005] The utility model provides the following technical solution: a transmission mechanism for the power part of a pumping unit, which is installed between a motor 8 and a speed reducer 3. The characteristics are as follows: the output shaft of the motor 8 is installed in the shaft hole 71 of a T-shaped coupling 7, the flange 72 of the T-shaped coupling 7 is installed on one side of a connecting drum 6, the other side of the connecting drum 6 is installed on a brake disc 50, and the front part of the insertion shaft 51 in the middle of the brake disc 50 is installed in the speed reducer end cover 4 of the speed reducer 3.

[0006] The characteristics are as follows: the T-shaped coupling 7 is composed of a shaft sleeve 75 and a flange 72 installed at one end of the shaft sleeve 75; the hole at the center of the flange 72 and the shaft hole 71 of the shaft sleeve 75 have the same diameter and are connected.

[0007] The characteristics are as follows: six flange bolt holes 70 are evenly distributed on the flange 72, a shaft sleeve keyway 74 is provided on the inner side of the shaft sleeve 75, and a set screw hole 73 is provided on the shaft sleeve keyway 74.

[0008] The characteristics are as follows: the brake disc 50 is a disc with a smooth circumferential surface, six disc bolt holes 53 are evenly distributed on the end surface of the brake disc 50, and the positions correspond to the drum bolt holes 60. The insertion shaft 51 in the middle of the brake disc 50 is stepped, the outer diameter of the outer end is smaller than that of the inner end, and an insertion shaft keyway 52 is provided on the circumferential surface of the outer end of the insertion shaft 51.

[0009] The characteristics are as follows: the connecting drum 6 is a hollow oblate shape, drum bolt holes 60 are provided at the same positions on the two planes, and the positions correspond to the flange bolt holes 70 and the disc bolt holes 53. There are middle holes 61 at the centers of the two planes.

[0010] The characteristics are as follows: the flange bolt holes 70, the drum bolt holes 60, and the disc bolt holes 53 have the same aperture, and the positions are respectively distributed on the corresponding circular surfaces. The six flange bolt holes 70 and the six drum bolt holes 60 are connected by a set of six bolts; the six drum bolt holes 60 and the six disc bolt holes 53 are connected by another set of six bolts.

[0011] The advantages are as follows: through the connecting drum made of elastic material, it has a larger elastic contact surface, conducts the power of the motor to the speed reducer, starts more smoothly, has low noise and small vibration, and provides quality assurance for long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is the front view of the whole of the utility model;

[0013] Figure 2 is Figure 1 the right view of;

[0014] Figure 3 is Figure 1 the top view of;

[0015] Figure 4 is Figure 1 a partial sectional view;

[0016] Figure 5 It is a sectional view taken along the A-A plane of the brake disc 50;

[0017] Figure 6 It is Figure 5 the right view of

[0018] Figure 7 It is Figure 5 the top view of

[0019] Figure 8 It is the front view of the connecting drum 6;

[0020] Figure 9 It is Figure 8 the right view of

[0021] Figure 10 It is Figure 8 the top view;

[0022] Figure 11 It is the three-dimensional view of the connecting drum 6;

[0023] Figure 12 It is Figure 13 the sectional view taken along the B-B direction of

[0024] Figure 13 It is Figure 12 the right view of

[0025] Figure 14 It is the enlarged three-dimensional view of the T-shaped coupling 7.

[0026] In the figure: The corresponding serial numbers of each part and component are not arranged in consecutive natural numbers. The naming is only for the convenience of narrative expression. Referring to the industry customary specifications, they are named as follows based on their uses, functions, and shapes: 1. Sprocket; 2. Sprocket shaft sleeve; 3. Reducer; 4. Reducer end cover; 5. Brake; 50. Brake disc; 51. Insert shaft; 52. Insert shaft keyway; 53. Disc bolt hole; 6. Connecting drum; 60. Drum bolt hole; 61. Middle hole; 7. T-shaped coupling; 70. Flange bolt hole; 71. Shaft hole; 72. Flange; 73. Set screw hole; 74. Shaft sleeve keyway; 75. Shaft sleeve; 8. Motor. The above parts from the same or similar functional parts are prefixed with the same numerical prefix; the English letters in the serial numbers are used for the purpose of vividly describing the shape of the component and for simplicity of expression; the figures are not in the same scale. Specific implementation manners

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form, such as the number of each bolt hole.

[0029] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that for the sake of convenience of description, the sizes of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, for example, in the background art, the applicant's prior patents are only given the patent numbers and names, and the details can be found in the patent documents. Any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom, upper part, lower part" are usually based on the orientation or positional relationships shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description. Without contrary instructions, these orientation words do not indicate and imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the protection scope of the present utility model; the orientation words "inside, outside" refer to the inside and outside relative to the contours of the respective components.

[0031] For ease of description, if spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. can be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figures. It is necessary to combine with the described views to clearly understand its meaning, and deviation is likely to occur when separated from the specific views. It should be understood that spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figures for the device. For example, if the device in the attached drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above" can include both the orientations of "above" and "below".

[0032] Please refer to Figure 1-14 , and hereinafter, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0033] The principle of the present invention is as Figure 1 shown in FIG. - 4: A transmission mechanism of the power part of a pumping unit according to the present invention is installed between a motor 8 and a speed reducer 3, and is installed on the platform at the lower part of a tower-type pumping unit to complete the power output of the motor 8. Its technical characteristics are: the output shaft of the motor 8 is installed in the shaft hole 71 of a T-shaped coupling 7, the flange 72 of the T-shaped coupling 7 is installed on one side of a connecting drum 6, the other side of the connecting drum 6 is installed on a brake disc 50, and the front part of the insertion shaft 51 in the middle of the brake disc 50 is installed in the speed reducer end cover 4 of the speed reducer 3. The structure and shape of the connecting drum 6 have been described before. Its function is to replace the rubber pier assembly in the coupling in the prior art. Its shape is similar to a "drum" without a skin with openings on the upper and lower surfaces. Some people also describe its shape as a "tyre", as Figure 8-11 shown. However, the connecting drum 6 is entirely a rubber tyre part without a "hub", and six drum bolt holes 60 are distributed on both end faces of the "tyre" to connect the corresponding bolt holes of the corresponding T-shaped coupling 7 and the brake disc 50. In the present invention, the connecting drum 6 is made of engineering rubber and wire winding reinforcement, a separately customized product. The processing technology part is omitted here and is understood to be similar to the processing technology of a tyre.

[0034] The T-shaped coupling 7 is composed of a sleeve 75 and a flange 72 installed at one end of the sleeve 75. It is a steel machined part. The hole at the center of the flange 72 and the shaft hole 71 of the sleeve 75 are of equal diameter and connected. Six flange bolt holes 70 are evenly distributed on the flange 72. A sleeve keyway 74 is provided on the inner side of the sleeve 75. A top screw hole 73 is provided on the sleeve keyway 74 for use when removing the key. The brake disc 50 is a disc with a smooth circumferential surface, which is used to cooperate with the brake component of the brake 5, that is, the brake block. The brake disc 50 is also a steel machined part. Six disc bolt holes 53 are evenly distributed on the end surface of the brake disc 50, and the positions correspond to the drum bolt holes 60. The plug shaft 51 in the middle of the brake disc 50 is stepped, and the outer end diameter is smaller than the inner end diameter. The outer end of the plug shaft 51 is provided with a plug shaft keyway 52. The plug shaft 51 transmits the power of the motor 8 to the reducer 3.

[0035] The flange bolt holes 70, drum bolt holes 60, and disc bolt holes 53 have the same hole diameters and are located on corresponding circular surfaces. The six flange bolt holes 70 and the six drum bolt holes 60 are connected by a group of six bolts; the six drum bolt holes 60 and the six disc bolt holes 53 are connected by another group of six bolts.

[0036] From the above description, it can be seen that the connecting drum 6 is in the center, and the left side is further connected to the reducer 3 through the brake disc 50 and the plug-in shaft 51; the right side is connected to the motor 8 through the flange 72 and the sleeve 75 of the T-shaped coupling 7. The two rigid parts on the left and right are connected into one through the elastic connecting drum 6 to complete the power transmission function. The motor 8 starts more smoothly, with less noise and vibration. During long-term operation, the aging speed is slower due to the larger contact area between the connecting drum 6 and the two rigid parts, which is conducive to long-term operation.

[0037] It should be noted that the brake 5 mentioned in the utility model is in another patent of the applicant (concentric dual-axis drive control device for oil pumping units, patent number 202322814689.9), with a specification drawing and a detailed description in the specification, which will be omitted here.

[0038] It should be noted that, although an embodiment of the utility model has been shown and described in this article, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. Among them, the technical principle provided by the utility model is adopted to transform the utility model into an integrated oil pumping and well repairing machine. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A transmission mechanism for the power part of a pumping unit, installed between a motor (8) and a speed reducer (3), characterized in that: The output shaft of the electric motor (8) is installed in the shaft hole (71) of the T-shaped coupling (7). The flange (72) of the T-shaped coupling (7) is installed on one side of the connecting drum (6). The other side of the connecting drum (6) is installed on the brake disc (50). The front part of the insertion shaft (51) in the middle of the brake disc (50) is installed in the reducer end cover (4) of the reducer (3). The connecting drum (6) is a hollow flat circular shape made of rubber. There are drum bolt holes (60) at the same positions on the two planes, corresponding to the flange bolt holes (70) and the disc bolt holes (53). There is a middle hole (61) at the center of each of the two planes.

2. The transmission mechanism of the power part of a pumping unit according to claim 1, characterized in that: The T-shaped coupling (7) is composed of a shaft sleeve (75) and a flange (72) installed at one end of the shaft sleeve (75). The hole at the center of the flange (72) and the shaft hole (71) of the shaft sleeve (75) have the same diameter and are connected.

3. The transmission mechanism of the power part of a pumping unit according to claim 2, characterized in that: a flange There are six evenly distributed flange bolt holes (70) on the (72). There is a shaft sleeve keyway (74) on the inner side of the shaft sleeve (75), and there is a set screw hole (73) on the shaft sleeve keyway (74).

4. The transmission mechanism of the power part of a pumping unit according to claim 1, characterized in that: The brake disc (50) is a disc with a smooth circumferential surface. There are six evenly distributed disc bolt holes (53) on the end face of the brake disc (50), corresponding to the positions of the drum bolt holes (60). The insertion shaft (51) in the middle of the brake disc (50) is stepped, with the outer diameter smaller than the inner diameter. There is an insertion shaft keyway (52) on the circumferential surface of the outer end of the insertion shaft (51).

5. The transmission mechanism of the power part of a pumping unit according to claim 1, characterized in that: flange The bolt holes (70), the drum bolt holes (60), and the disc bolt holes (53) have the same diameter, and their positions are each distributed on the corresponding circular surfaces. The six flange bolt holes (70) and the six drum bolt holes (60) are connected by a set of six bolts. The six drum bolt holes (60) and the six disc bolt holes (53) are connected by another set of six bolts.

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