Hoisting device for overhaul of drilling pump

Abstract

The utility model aims to provide a hoisting device for overhauling a drilling pump, and belongs to the technical field of petroleum drilling and production equipment. The device comprises a lower bracket, an inverted L-shaped upper bracket, a slewing bearing for connecting the lower bracket and the upper bracket, and a positioning device for fixing the rotating position of the upper bracket, a guide rail beam is arranged on the top of the upper support, a guide rail pulley moving along the guide rail beam is arranged on the guide rail beam, and a chain block is connected below the guide rail pulley. The upper support and the lower support are connected through the slewing bearing, low-resistance smooth rotation of the upper support within the range of 360 degrees is achieved by means of the multi-direction load bearing characteristic of the slewing bearing, and meanwhile unbalance loading vibration in hoisting operation is effectively restrained; by combining the eyelet bolt and a clamping groove locking structure of the positioning disc, high-rigidity fixing of the rotating position is achieved, and the problems of rotating clamping stagnation and positioning failure of a traditional sleeve type device are solved. The device is simple in structure and safe and reliable in performance.

Description

Technical Field

[0001] This utility model relates to the field of oil drilling and production equipment technology, specifically to a drilling pump maintenance and hoisting device, which is particularly suitable for the disassembly and assembly of heavy components such as hydraulic end cylinder liners, pistons, and connecting rods of drilling pumps. Background Technology

[0002] Currently, the drilling pumps used in oil fields are piston pumps. During operation, piston pumps require replacement of wear parts such as cylinder liners and pistons, necessitating the disassembly and reassembly of components like connecting rods and pressure caps. These components are quite heavy, requiring lifting equipment for disassembly and reassembly. Currently, two main methods are used for lifting during drilling pump maintenance at the field:

[0003] 1. Using a well site crane for hoisting requires a crane and professional crane operators, as well as sufficient working space for the crane. Drilling pump maintenance operations are costly in terms of manpower and resources and have poor adaptability.

[0004] 2. The hoisting equipment installed on the drilling pump platform uses an inner and outer sleeve connection, which makes it easy for the equipment to get stuck and difficult to rotate when hoisting heavy objects. This can easily lead to rotation jamming and positioning failure, resulting in poor operational safety. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a drilling pump maintenance and hoisting device. It connects the upper and lower supports via a slewing bearing, utilizing its multi-directional load-bearing characteristics to achieve smooth, low-resistance rotation of the upper support within a 360° range, while effectively suppressing eccentric vibrations during hoisting operations. Combined with the locking structure of the hinge bolt and the positioning plate, it achieves high-rigidity fixation of the rotational position, solving the problems of rotational jamming and positioning failure in traditional sleeve-type devices. This invention has a simple structure and reliable, safe performance.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a drilling pump maintenance and hoisting device, comprising a lower support, an inverted L-shaped upper support, a slewing bearing connecting the lower support and the upper support, and a positioning device for fixing the rotational position of the upper support;

[0007] The top of the upper support is provided with a guide rail beam, and a guide rail trolley that moves along the guide rail beam is provided on the guide rail beam. A hand chain hoist is connected below the guide rail trolley.

[0008] As an improvement of this utility model, the positioning device includes a positioning plate fixed to the upper bracket and a hinged bolt installed on the lower bracket via a pin and an ear plate. The positioning plate is provided with a slot, and the hinged bolt achieves position locking by screwing into the slot.

[0009] As an improvement of this utility model, the positioning disk has a fan-shaped structure and the slot is a U-shaped groove with the opening facing outward.

[0010] As an improvement of this utility model, the number of slots is at least two, and they are evenly distributed on the positioning plate.

[0011] As an improvement of this utility model, the tail end of the guide rail beam is provided with a guide rail limiting block to prevent the guide rail trolley from derailing.

[0012] As an improvement of this utility model, the guide rail limiting block is an angle iron, which is bolted or welded to the guide rail beam.

[0013] The beneficial effects of this utility model are as follows: This utility model provides a drilling pump maintenance and hoisting device, which connects the upper and lower supports through a slewing bearing. Utilizing its multi-directional load-bearing characteristics, it achieves smooth, low-resistance rotation of the upper support within a 360° range, while effectively suppressing eccentric vibration during hoisting operations. Combined with the locking structure of the hinge bolt and the positioning plate, it achieves high-rigidity fixation of the rotational position, solving the problems of rotational jamming and positioning failure in traditional sleeve-type devices. This utility model has a simple and compact structure, is easy to operate, does not require external power equipment for hoisting operations, has low operating costs, occupies little space, and is safe and reliable.

[0014] Furthermore, the positioning device includes a positioning plate fixed to the upper support and a hinged bolt mounted to the lower support via a pin and a lug plate. The positioning plate has a slot, and the hinged bolt locks its position by screwing into the slot. This rotary positioning device, through the aforementioned mechanical forced locking, eliminates the risk of accidental swaying of the support under lifting conditions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the positioning disk of the positioning device of this utility model.

[0017] In the diagram, 1 is the lower support; 2 is the slewing bearing; 3 is the positioning device; 4 is the upper support; 5 is the guide rail trolley; 6 is the guide rail limit block; and 7 is the hand chain hoist. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] like Figure 1 As shown, a drilling pump maintenance and hoisting device includes a lower support 1, an inverted L-shaped upper support 4, a slewing bearing 2 connecting the lower support 1 and the upper support 4, and a positioning device 3 for fixing the rotational position of the upper support 4. A guide rail beam is provided at the top of the upper support 4, and a guide rail trolley 5 that moves along the guide rail beam is mounted on the guide rail beam. A hand-operated hoist 7 is connected below the guide rail trolley 5. The device is directly integrated and installed with the drilling pump platform via the lower support 1, eliminating the need for external power equipment. It can be used as needed, has a simple structure, and is easy to operate.

[0020] The positioning device 3 includes a positioning plate fixed to the upper bracket 4 and a hinged bolt mounted to the lower bracket 1 via a pin and an ear plate. The positioning plate has a slot, and the hinged bolt locks its position by screwing into the slot. The positioning plate has a fan-shaped structure with at least two outward-facing U-shaped grooves evenly distributed on its outer side. Its inner side connects to the outer surface of the bottom of the upper bracket. The number of U-shaped grooves can be appropriately increased or decreased according to the control rotation accuracy. When the control accuracy requirement is high, the number of U-shaped grooves is increased; when the control accuracy requirement is low, the number of U-shaped grooves is decreased. This embodiment does not limit the specific number. Preferably, the slots are evenly distributed on the positioning plate.

[0021] It should be noted that the positioning plate can be semi-circular, circular, or arc-shaped. In this embodiment, the positioning plate is semi-circular. The slewing bearing 2 is a known existing component, with its outer ring bolted to the lower support 1 and its inner ring bolted to the upper support 4.

[0022] To prevent the guide rail trolley 5 from derailing, a guide rail limiting block 6 is provided at the tail of the guide rail beam. Preferably, the guide rail limiting block 6 is an angle iron, bolted or welded to the guide rail beam, which has a simple structure and low cost.

[0023] This device is centrally mounted on the side of the drilling pump on the drilling pump assembly platform via a lower support 1. The lower support 1 and the upper support 4 are connected by a slewing bearing. The guide rail beam of the upper support 4 can rotate within the space above and beside the drilling pump head. The guide rail trolley can slide on the guide rail beam, enabling lifting at any position within the lifting range. During operation, the operator moves the guide rail trolley 5 along the guide rail beam by operating the chain on the guide rail trolley 5, thereby moving the components along the guide rail beam. The components are then moved up and down by operating the chain on the hand-operated hoist 7. The structure is simple and the operation is convenient and quick. Therefore, the combination of the guide rail trolley 5 and the hand-operated hoist 7 allows for arbitrary adjustment of the lifting point position without the need for additional power, making it convenient to operate and more suitable for on-site operations.

[0024] The above is a detailed description of a drilling pump maintenance and hoisting device provided by this utility model. Specific examples have been used to illustrate the technical principles and implementation methods of this utility model. The above embodiments are only used to help understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A drilling pump maintenance and hoisting device, characterized in that: It includes a lower support, an inverted L-shaped upper support, a slewing bearing connecting the lower support and the upper support, and a positioning device for fixing the rotational position of the upper support; The top of the upper support is provided with a guide rail beam, and a guide rail trolley that moves along the guide rail beam is provided on the guide rail beam. A hand chain hoist is connected below the guide rail trolley.

2. The drilling pump maintenance and hoisting device according to claim 1, characterized in that: The positioning device includes a positioning plate fixed to the upper bracket and a hinged bolt installed on the lower bracket via a pin and an ear plate. The positioning plate is provided with a slot, and the hinged bolt locks its position by screwing into the slot.

3. The drilling pump maintenance and hoisting device according to claim 2, characterized in that: The positioning plate has a fan-shaped structure and the slot is a U-shaped groove with the opening facing outwards.

4. The drilling pump maintenance and hoisting device according to claim 3, characterized in that: The number of card slots is at least two, and they are evenly distributed on the positioning plate.

5. The drilling pump maintenance and hoisting device according to claim 1, characterized in that: The rear end of the guide rail beam is provided with a guide rail limiting block to prevent the guide rail trolley from derailing.

6. The drilling pump maintenance and hoisting device according to claim 5, characterized in that: The guide rail limiting block is an angle iron, which is bolted or welded to the guide rail beam.

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