Lifting device for derrick upper body of workover rig
Through the lifting method and clamping part of the steel wire rope driven by hydraulic winch, the problem of hydraulic cylinder pressure instability during the lifting of the derrick upper body of the well repair machine is solved, and safer and more efficient lifting of the derrick upper body is achieved, reducing the lifting of the derrick upper body of the well repair machine. The transportation weight and center of gravity are improved, and the overall safety is improved.
Patent Information
- Application Number
- CN202420482466.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-13
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-03-13
AI Technical Summary
The existing well repair machine derrick lifting device has safety hazards such as hydraulic cylinder pressure instability, loss of pressure, bending deformation, resulting in high-level falls.
The steel wire rope lifting method driven by a hydraulic winch is adopted, and the hydraulic winch is wound on multiple pulley sets, combining the clamping parts and limit ring design to ensure the stability and safety of the hydraulic winch.
It effectively eliminates the safety hazards caused by pressure instability, pressure loss, and bending deformation of the hydraulic cylinder, improves the safety and stability of the derrick body, reduces the transportation weight and center of gravity, and improves the overall safety.
Smart Images
Figure CN222225819U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lifting equipment for a workover derrick, in particular to a lifting device for the upper body of a workover derrick. Background Art
[0002] The derrick of a well repair rig is mainly composed of an upper derrick body and a lower derrick body. During the transportation of the well repair rig, the upper derrick body is inserted into the lower derrick body, and the upper derrick body can be extended and retracted in the lower derrick body. When the well repair rig is in working condition, the upper derrick body needs to be extended from the lower derrick body. Conventional well repair rigs use hydraulic cylinders to extend the upper derrick body from the lower derrick body. Since the hydraulic cylinder has a long stroke and is a compressed rod, there is a major safety hazard of the upper derrick body falling from a high position during the lifting process, such as instability due to compression, loss of pressure, and bending deformation. Therefore, it is of great significance to provide a safer and more efficient way to lift the upper derrick body of a well repair rig. Utility Model Content
[0003] In view of the above problems, the utility model provides a lifting device for the upper body of the derrick of a well repair rig, which solves the major safety hazard of the existing lifting device causing the upper body of the derrick to fall from a high position during the lifting process due to pressure instability, pressure loss, and bending deformation.
[0004] The technical solution adopted by the utility model to solve the technical problem is: a lifting device for the upper body of a well repair rig mast, comprising a mast upper body and a mast lower body, the mast upper body being telescopically arranged in the mast lower body, a fixed seat being arranged at the bottom of the mast lower body, the lifting device comprising a hydraulic winch fixedly arranged on the fixed seat and a pulley block driven by the hydraulic winch, the pulley block comprising a lifting pulley block I and a lifting pulley block II arranged at the upper end of the mast lower body, and a lifting pulley block III arranged at the lower end of the mast upper body, the lifting rope of the hydraulic winch being sequentially wound around the lifting pulley block II, the lifting pulley block III and the lifting pulley block I, a placement groove being arranged on the fixed seat, and a clamping member for clamping the hydraulic winch being arranged in the placement groove.
[0005] As an optimization, the clamping member includes a first clamping member and a second clamping member respectively arranged on the inner side walls of the placement groove, and the first clamping member and the second clamping member both include a threaded column rotatably arranged on the inner wall of the placement groove and a knob cooperating with the threaded column, a limiting ring is provided on the knob, and the inner wall of the placement groove is provided with a limiting groove for accommodating the limiting ring.
[0006] As an optimization, a baffle is provided at one end of the threaded column and a suction cup is provided at the other end.
[0007] As an optimization, a blind hole is provided on the side wall of the placement groove, and the length of the blind hole is greater than the length of the threaded column.
[0008] The beneficial effect of the utility model is that the utility model provides a lifting device for the upper body of the derrick of a well repairing machine, which can make the upper body of the derrick extend from the lower body of the derrick more safely and efficiently, so that the upper body of the derrick reaches a specified working height.
[0009] 1. Compared with the prior art, the utility model of the lifting device for the upper body of the derrick of the well repair rig adopts a wire rope lifting method, which fundamentally eliminates the potential safety hazard of the upper body of the derrick falling from a high position during the lifting process due to the hydraulic cylinder being pressurized and unstable, losing pressure, bending and deformation in the method of lifting the upper body of the derrick by the hydraulic cylinder, and is safer.
[0010] 2. Compared with the prior art, the utility model of the derrick upper body lifting device of the well repair rig can improve the overall safety of the derrick. The weight of the hydraulic cylinder is much greater than the weight of the wire rope. Therefore, the use of the wire rope lifting method can greatly reduce the transportation weight of the well repair rig. At the same time, the center of gravity of the derrick can be greatly lowered to reduce the overall lifting and lowering torque of the derrick and the extension load of the derrick upper body, thereby improving the overall safety and stability of the derrick. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 A schematic diagram of the structure of the upper body lifting device of the derrick of the utility model;
[0012] Figure 2 A schematic diagram of the initial state of the lifting device for the upper body of the derrick of the utility model;
[0013] Figure 3 A schematic diagram of the intermediate state of the derrick upper body lifting device of the utility model;
[0014] Figure 4 A schematic diagram of the lifting completion state of the derrick upper body lifting device of the utility model;
[0015] Figure 5 A schematic diagram of the structure of the fixing seat and the hydraulic winch of the utility model;
[0016] Figure 6 A structural schematic diagram of the first clamping member of the utility model.
[0017] Among them: 1-upper body of the derrick, 2-lower body of the derrick, 3-lifting pulley group I, 4-lifting pulley group III, 5-lifting pulley group II, 6-wire rope, 7-hydraulic winch, 8-first clamping piece, 9-second clamping piece, 10-threaded column, 11-knob, 12-limiting ring, 13-baffle, 14-suction cup, 15-fixed seat, 16-placing groove. DETAILED DESCRIPTION
[0018] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.
[0019] 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. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0020] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0021] like Figure 1-4 As shown, a lifting device for the upper body of a well repair rig mast comprises an upper body 1 and a lower body 2 of the mast, wherein the upper body 1 of the mast is telescopically arranged in the lower body 2 of the mast, and the upper body 1 of the mast is sleeved in the lower body 2 of the mast, and the upper body 1 of the mast can be extended and retracted in the lower body 2 of the mast under the action of an external force; a fixing seat 15 is provided at the bottom of the lower body 2 of the mast, and the lifting device comprises a hydraulic winch 7 fixedly arranged on the fixing seat and a pulley block driven by the hydraulic winch 7, wherein the pulley block comprises a lifting pulley block I3 and a lifting pulley block II5 arranged at the upper end of the lower body 2 of the mast, and the lifting pulley block I3 and the lifting pulley block II5 are ... The lifting pulley block III4 is at the lower end of the derrick upper body 1, and the lifting rope of the hydraulic winch 7 is wound around the lifting pulley block II5, the lifting pulley block III4 and the lifting pulley block I3 in sequence. The fixing seat 15 is provided with a placement groove 16, and the placement groove 16 is provided with a clamping member for clamping the hydraulic winch 7. The setting of the clamping member increases the stability of the hydraulic winch 7. During installation, the hydraulic winch 7 is placed in the placement groove, first fixed by bolts, and then the clamping member is used to clamp the hydraulic winch 7 to form a secondary reinforcement to prevent the hydraulic winch 7 from losing stability due to the loosening of fixing parts such as bolts during use.
[0022] The clamping member includes a first clamping member 8 and a second clamping member 9 respectively arranged on the inner side walls of the placement groove, and the first clamping member 8 and the second clamping member 9 both include a threaded column 10 rotatably arranged on the inner wall of the placement groove and a knob 11 matched with the threaded column 10, a limiting ring 12 is provided on the knob 11, and a limiting groove for accommodating the limiting ring 12 is provided on the inner wall of the placement groove 16; a baffle 13 is provided at one end of the threaded column 10, and a suction cup 14 is provided at the other end; a blind hole is provided on the side wall of the placement groove 16, and the length of the blind hole is greater than the length of the threaded column 10.
[0023] The lifting pulley block I3 and the lifting pulley block II5 are fixed at the uppermost part of the derrick lower body 2. During the lifting and lowering process of the derrick upper body 1, their positions remain unchanged. The lifting pulley block III4 is fixed at the lowermost part of the derrick upper body 1. During the lifting and lowering process of the derrick upper body 1, the lifting pulley block III4 rises and falls accordingly with the lifting and lowering of the derrick upper body 1. The hydraulic winch 7 provides power for lifting and lowering the derrick upper body 1 as a power source, and the lifting rope connects the lifting pulley block I3, the lifting pulley block III4, and the lifting pulley block II5 together.
[0024] Lifting pulley block I3 and lifting pulley block II5 serve as fixed pulleys, and lifting pulley block III4 serves as a movable pulley. The entire lifting device constitutes a fixed pulley and movable pulley system.
[0025] like Figure 2 The figure shows the initial state of the lifting device of the derrick upper body 1 of the utility model. In this state, the wire rope 6 is extended to the longest length, the derrick lower body 2 is in the lowest position, and the lifting pulley block III 4 fixed thereon is in the lowest position along with the derrick lower body 2.
[0026] like Figure 3 The figure shows a schematic diagram of the intermediate state of the lifting device of the derrick upper body 1 of the utility model. In this state, the hydraulic winch 7 is operated to rotate, thereby driving the extension length of the wire rope 6 to decrease. Since the positions of the lifting pulley group I3 and the lifting pulley group II5 remain unchanged, the lifting pulley group III4 and the derrick upper body 1 are increased in height, thereby lifting the derrick upper body 1.
[0027] like Figure 4 The figure shows a schematic diagram of the lifting device of the derrick upper body 1 of the utility model in the lifting completion state. In this state, the wire rope 6 is stretched out to the shortest length. Since the positions of the lifting pulley block I3 and the lifting pulley block II5 remain unchanged, the lifting pulley block III4 together with the derrick upper body 1 are in the highest position, and the lifting of the derrick upper body 1 is completed.
[0028] The above operation process is the lifting process of the derrick upper body 1, and the lowering process of the derrick upper body 1 is the reverse operation of the above operation process.
[0029] The above-mentioned specific implementation methods are only specific cases of the present utility model. The patent protection scope of the present utility model includes but is not limited to the product form and style of the above-mentioned specific implementation methods. Any appropriate changes or modifications made to them by ordinary technicians in the relevant technical field in accordance with the claims of the present utility model shall fall within the patent protection scope of the present utility model.
Claims
1. A lifting device for the upper body of a workover rig mast, comprising an upper body of the mast and a lower body of the mast, wherein the upper body of the mast is telescopically arranged in the lower body of the mast, and a fixing seat is arranged at the bottom of the lower body of the mast, characterized in that: The lifting device includes a hydraulic winch fixed on the fixed seat and a pulley group running under the drive of the hydraulic winch, the pulley group includes a lifting pulley group I and a lifting pulley group II arranged at the upper end of the lower body of the derrick, and a lifting pulley group III arranged at the lower end of the upper body of the derrick, the lifting rope of the hydraulic winch is sequentially wound around the lifting pulley group II, the lifting pulley group III and the lifting pulley group I, the fixed seat is provided with a placement groove, and a clamping member for clamping the hydraulic winch is provided in the placement groove.
2. The upper body lifting device of the workover rig mast according to claim 1 is characterized in that: The clamping member includes a first clamping member and a second clamping member respectively arranged on the inner side walls of the placement groove, and the first clamping member and the second clamping member both include a threaded column rotatably arranged on the inner wall of the placement groove and a knob cooperating with the threaded column, a limiting ring is provided on the knob, and the inner wall of the placement groove is provided with a limiting groove for accommodating the limiting ring.
3. The upper body lifting device of the workover rig mast according to claim 2 is characterized in that: A baffle is provided at one end of the threaded column, and a suction cup is provided at the other end.
4. The upper body lifting device of the workover rig mast according to claim 3 is characterized in that: The side wall of the placement groove is provided with a blind hole, and the length of the blind hole is greater than the length of the threaded column.