Quickly dismounting rigid flange pulley

Abstract

The utility model discloses a quick dismounting rigid flange pulley, including flange bushing and flange pulley, the flange bushing is including flange, bushing, the flange is set at bushing tip, the end face of flange towards bushing extension direction is equipped with first split structure, one side end surface of flange pulley is equipped with second split structure, first split structure can split with second split structure and connect. The utility model discloses the flange fixed bushing and flange pulley device of development have provided a novel pulley connection structure, and the split surface cooperation of split structure is centered and transmits torque. The utility model solves the problem that motor pulley dismounts, installs difficult.

Description

Technical Field

[0001] This utility model relates to the field of oil pumping unit technology, specifically to a quick-release rigid flange pulley. Background Technology

[0002] In oil wells, electric motors transmit power to pumping units, enabling their normal operation. During production, the pumping unit's stroke rate needs frequent adjustments based on production conditions. These adjustments are achieved by replacing the motor pulleys with different diameters. Replacing the motor pulleys typically requires the use of specialized pulley pullers and the cooperation of multiple people. This not only consumes manpower and resources but also, in several ways, complicates the operation and can damage the motor:

[0003] The motor pulley is too close to the motor body bearing end cover, making it impossible to install and use tools such as pullers when disassembling the pulley, thus preventing the motor pulley from being removed and replaced.

[0004] The pulley and pulley puller are in point contact, which can easily cause damage to the pulley and pulley puller's grippers. Damage can easily lead to accidents such as the pulley puller falling and injuring people.

[0005] Installing a pulley often requires striking it with a sledgehammer. The resulting impact force is significant, creating an axial force on the bearing at the motor output shaft end, which can easily damage the bearing and shorten its lifespan. Violent striking can also damage the edges and inner bore of the pulley.

[0006] Announcement No. CN219932895U discloses a motor pulley. This utility model includes a motor output shaft, an upper pulley, and a lower pulley. A connecting shaft is fixed to the motor output shaft, and two sets of slots are symmetrically formed on the connecting shaft. Both the upper and lower pulleys have fixing holes, and fixing bolts are installed inside the fixing holes. Locking blocks are fixed to the upper and lower pulleys at the positions of the slots, and the locking blocks engage with the inner walls of the slots. By configuring the upper and lower pulleys, the tooth body, and the tooth groove, the slots lock the upper and lower pulleys, causing them to rotate synchronously with the motor output shaft.

[0007] In this existing technology, the teeth can easily damage the motor shaft, and there are seams in the pulley grooves, which affects the service life of the belt.

[0008] Announcement No. CN215172042U discloses a motor pulley. This utility model includes a pulley body with a belt groove and a keyway. The pulley body is manufactured in two parts: an upper pulley and a lower pulley. The belt groove is provided on the surface of the upper and lower pulleys, and the keyway is located in the center semicircular surface of either the upper or lower pulley. Bolt holes are provided in the upper and lower pulleys, respectively. The upper and lower pulleys are connected by fastening bolts in the bolt holes of the upper and lower pulleys.

[0009] In this prior art, the pulley has seams, which affects the service life of the belt.

[0010] The announcement number CN215908349U discloses a pumping unit pulley with a fixed separation section. When installing the cone sleeve, the operator first places the movable plate into the first movable groove, then inserts the movable pin into the fixing hole and the first through hole on one side of the movable plate to fix the movable plate. After fixing, the operator rotates the movable pin to rotate the movable plate and move it into the first movable groove. At this time, the operator inserts the mounting block on the outer wall of the cone sleeve into the mounting groove. After the cone sleeve is installed, the operator rotates the movable pin in the opposite direction to move the movable plate to the second movable groove on the mounting block. The operator then inserts the fixing bolt into the threaded hole and the second through hole on the other side of the movable plate to fix the movable plate. The movable plate then limits the position of the mounting block, allowing the cone sleeve to be installed on the inner wall of the pulley body.

[0011] The existing technology has a complex installation process and low installation efficiency.

[0012] In summary, the technical solutions, technical problems to be solved, and beneficial effects of the above-disclosed technologies are all different from those of this utility model. For more technical features, technical problems to be solved, and beneficial effects of this utility model, the above-disclosed technical documents do not provide any technical inspiration. Utility Model Content

[0013] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention provides a quick-release rigid flange pulley.

[0014] To achieve the above objectives, the present invention adopts the following technical solution:

[0015] A quick-release rigid flange pulley includes a flange bushing and a flange pulley. The flange bushing includes a flange and a bushing. The flange is disposed at the end of the bushing. The end face of the flange facing the extension direction of the bushing is provided with a first splicing structure. The end face of the flange pulley is provided with a second splicing structure. The first splicing structure can be spliced ​​and connected with the second splicing structure.

[0016] Furthermore, the flange is provided with at least two first bolt holes evenly distributed circumferentially;

[0017] Specifically, the flange pulley is provided with at least two circumferentially evenly distributed four second bolt holes, which pass through the second splicing structure;

[0018] Specifically, after the first and second assembly structures are assembled, the first bolt holes and the second bolt holes correspond one-to-one and are aligned, and the flange bushing and the flange pulley are connected by bolts.

[0019] Furthermore, the inner wall of the bushing is provided with a bushing keyway for connecting the motor shaft.

[0020] Furthermore, the first assembly structure is a semi-circular boss, the second assembly structure is a semi-circular recess, and the flange bushing boss and the flange pulley recess are correspondingly matched to form a complete cylinder.

[0021] Furthermore, the flange bushing and the flange pulley shaft are fitted with a clearance fit.

[0022] Furthermore, the second bolt hole is a tapered countersunk bolt hole, and the bolt is a tapered countersunk bolt.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. This utility model provides a novel pulley connection structure through the development of a flange fixing bushing and a flange pulley device. It improves the existing interference fit or tapered fit of the pulley and bushing to a clearance fit, transmitting torque through the convex-concave mating surfaces of the flange bushing and flange pulley end faces. This utility model solves the problem of difficult disassembly and installation of motor pulleys.

[0025] 2. The flange bushing and flange pulley in this utility model adopt a clearance fit, so there is no need to use a sledgehammer to hit the pulley when installing it, which avoids axial impact force on the bearing at the end of the motor output shaft, and reduces bearing damage and damage to the edge and inner hole of the pulley caused by violent hitting.

[0026] 3. This utility model allows for quick and precise adjustment of well stroke rate by replacing the pulley without disassembling the bushing. Simply replace the pulley with one of different diameters to meet the needs of refined oilfield management.

[0027] 4. In this utility model, the flange bushing and the flange pulley adopt a clearance fit, eliminating the need for tools such as pullers when disassembling the pulley. This protects the motor and pulley while significantly improving disassembly and assembly efficiency. The bushing can be installed and fixed on the motor shaft in one go, and one type of flange bushing can be adapted to pulleys of various diameters. When adjusting the output speed, there is no need to disassemble the bushing; simply replace the pulley with one of different diameters.

[0028] 5. This utility model has a reasonable structure, reliable principle, and is convenient and quick to use. It effectively shortens the operation time for replacing belt pulleys, reduces well downtime, improves the oil well production rate, reduces the labor intensity of operators, and improves work efficiency, thus having significant economic and social benefits. Attached Figure Description

[0029] Figure 1 This is a structural schematic diagram of a quick-assembly and disassembly rigid flange pulley according to the present invention.

[0030] Figure 2 This is an exploded view of a quick-assembly and disassembly rigid flange pulley according to the present invention.

[0031] Figure 3 This is a schematic diagram of the flange bushing in this utility model.

[0032] Figure 4 This is a schematic diagram of the flanged pulley in this utility model.

[0033] In the figure: 1. Motor shaft, 2. Motor shaft keyway, 3. Flange bushing, 4. First bolt hole, 5. Bushing keyway, 6. Semi-circular boss, 7. Key, 8. Flange pulley, 9. Semi-circular recess, 10. Second bolt hole, 11. Tapered countersunk bolt. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Please see Figures 1 to 4 The present invention provides a quick-release rigid flange pulley, comprising a flange bushing 3 and a flange pulley 8;

[0036] The flange bushing 3 includes a flange and a bushing. The flange is located at the end of the bushing. The inner wall of the bushing is provided with a bushing keyway 5. The flange is provided with four first bolt holes 4 evenly distributed in the circumference. The end face of the flange facing the bushing extension direction is provided with a first splicing structure.

[0037] The flange pulley 8 has a second splicing structure on one end face, and the flange pulley 8 has four second bolt holes 10 evenly distributed in the circumference, through which the second bolt holes 10 pass.

[0038] The first assembly structure can be assembled with the second assembly structure to transmit torque, and the first bolt hole 4 and the second bolt hole 10 are aligned one-to-one. The flange bushing 3 and the flange pulley 8 are connected by the tapered countersunk bolt 11.

[0039] Specifically, the first assembly structure is a semi-circular protrusion 6, and the second assembly structure is a semi-circular recess 9.

[0040] In this embodiment, the bushing keyway 5 of the flange bushing 3 is connected to the motor shaft keyway 2 of the motor shaft 1 via a key 7. The flange bushing boss 6 and the flange pulley recess 9 are correspondingly engaged to form a complete cylinder, and the flange bushing 3 and the flange pulley 8 are fastened together by a tapered countersunk bolt 11.

[0041] In this embodiment, the flange bushing 3 and the flange pulley 8 shaft are fitted with a clearance fit. The torque is transmitted through the engagement of the concave and convex surfaces of the flange bushing 3 and the flange pulley 8, thereby realizing the linkage between the flange pulley and the motor shaft.

[0042] Specifically, the second bolt hole 10 is a tapered countersunk bolt hole.

[0043] The operating steps of the quick-release rigid flange pulley device provided by this utility model are as follows:

[0044] When changing the motor pulley and adjusting the stroke count on the production site, first stop the machine according to the operating procedure, adjust the motor and remove the belt, and loosen the four tapered countersunk bolts 11 in sequence. Since the flange bushing 3 and the flange pulley 8 shaft adopt a clearance fit, the old pulley can be easily removed. Then, install the new pulleys of different diameters on the flange bushing 3, rotate and adjust the flange pulley 8 so that the flange bushing boss 6 and the flange pulley concave platform 9 are correspondingly engaged, and tighten the four tapered fixing bolts 11 in sequence. Then install the belt and adjust the belt tension to complete the operation of changing the motor pulley and adjusting the stroke count on the production site.

[0045] All components not discussed in detail in this application, as well as the connection methods of these components, are well-known technologies in this field. They can be directly applied and will not be elaborated further.

[0046] In this utility model, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be 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 utility model according to the specific circumstances.

[0047] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit 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 utility model.

[0048] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A quick-release rigid flange pulley, comprising a flange bushing and a flange pulley, characterized in that, The flange bushing includes a flange and a bushing. The flange is disposed at the end of the bushing. The end face of the flange facing the extension direction of the bushing is provided with a first splicing structure. The end face of the flange pulley is provided with a second splicing structure. The first splicing structure can be spliced ​​and connected with the second splicing structure.

2. The quick-release rigid flange pulley according to claim 1, characterized in that, The flange is provided with at least two first bolt holes that are evenly distributed circumferentially. The flange pulley is provided with at least two circumferentially evenly distributed four second bolt holes, which pass through the second splicing structure; After the first and second assembly structures are assembled, the first bolt holes and the second bolt holes correspond one-to-one and are connected to the flange bushing and the flange pulley by bolts.

3. The quick-release rigid flange pulley according to claim 2, characterized in that, The inner wall of the bushing is provided with a bushing keyway for connecting the motor shaft.

4. A quick-release rigid flange pulley according to claim 2, characterized in that, The first assembly structure is a semi-circular boss, and the second assembly structure is a semi-circular recess. The boss of the flange bushing and the recess of the flange pulley are correspondingly matched to form a complete cylinder.

5. A quick-release rigid flange pulley according to claim 2, characterized in that, The flange bushing and the flange pulley shaft are fitted with a clearance fit.

6. A quick-release rigid flange pulley according to claim 2, characterized in that, The second bolt hole is a tapered countersunk bolt hole, and the bolt is a tapered countersunk bolt.

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