Disassembling and assembling tool for skid-mounted flange bolt in narrow space

Abstract

A dismounting tool for a skid-mounted flange bolt in a narrow space is characterized by comprising a large gear and a small gear, the large gear comprises two semicircles, gear teeth are arranged on the inner circumference of each semicircle, and the gear teeth of the small gear are located on the outer circumference and meshed with the gear teeth of the large gear. A square column corresponding to a sleeve head of a flange bolt to be disassembled and assembled is arranged in the middle of the small gear. The two semicircles are respectively provided with a fixing structure used for being fixed with each other. A tool is inserted into the rotating hole to rotate the large gear outside the rotating hole, the small gear is driven to rotate, the square column of the small gear is connected with the hole of the sleeve head to drive the sleeve head to rotate, the flange bolt is sleeved with the bottom of the sleeve head, and therefore the flange bolt is dismantled. A tool used in a narrow space is manufactured by researching and utilizing the gear matching principle, and the tool is used in cooperation with a sleeve head, so that the influence of space limitation can be improved, flange bolts can be rapidly disassembled and assembled, the tool can adapt to operation of various pipeline flanges, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of oil and gas exploitation, and particularly relates to a disassembly and assembly tool for flange bolts in a skid-mounted narrow space. Background Art

[0002] During the process of replacing valves on a water injection pump skid, the commonly used disassembly tools are generally plum blossom wrenches, open-end wrenches and socket wrenches. When disassembling flange bolts, due to the relatively compact design of skid-mounted equipment, the space between pipelines is small, especially the distance between pipelines and the skid bottom plate. It is very difficult to disassemble using general tools during operation due to space limitations, which is time-consuming and laborious, and there will be a situation where the flange bolts are not tightened properly. Content of the Utility Model

[0003] In order to solve the problem of difficult disassembly and assembly of flange bolts in the prior art, the utility model provides a disassembly and assembly tool for flange bolts in a skid-mounted narrow space.

[0004] The technical solution of the utility model is as follows:

[0005] A disassembly and assembly tool for flange bolts in a skid-mounted narrow space, characterized by comprising a large gear and a small gear. The large gear includes two semi-circles, each semi-circle has teeth on its inner circumference, the teeth of the small gear are located on the outer circumference and mesh with the teeth of the large gear, and a square column corresponding to the socket head of the flange bolt to be disassembled and assembled is arranged in the middle of the small gear; the two semi-circles respectively have a fixing structure for fixing each other.

[0006] Preferably, the fixing structure includes a fixing ear and a connecting ear. The fixing ear is fixed on the semi-circle, the connecting ear extends away from the semi-circle from the fixing ear, and can be connected to one end of the other semi-circle without a fixing ear.

[0007] Preferably, the connecting ear is connected to a fixing bolt fixed to the corresponding end of the other semi-circle.

[0008] More preferably, the connecting ear includes a sliding groove parallel to the arc of the connected semi-circle and for the fixing bolt to slide, and the width of the sliding groove is not less than the diameter of the fixing bolt.

[0009] More preferably, a plurality of fixing card slots recessed towards the center of the circle for positioning the fixing ear are distributed in the sliding groove.

[0010] Preferably, a protection baffle covering the teeth of the large gear and the small gear is arranged along the inner circumference of the large gear.

[0011] Preferably, a rotation hole is arranged on the outer circumference of the large gear.

[0012] Preferably, the tooth height of the teeth of the large gear gradually decreases from the middle of the semi-circle towards both ends.

[0013] The beneficial effects of the present utility model are as follows:

[0014] By inserting a tool into the rotation hole to rotate the outer large gear, the small gear is driven to rotate. The square column of the small gear is connected to the hole of the socket head, driving the socket head to perform a rotational movement. The bottom of the socket head is sleeved on the flange bolt, thereby removing the flange bolt. By studying and utilizing the gear matching principle, a tool for use in a narrow space is made. When used in conjunction with the socket head, it can improve the influence of space limitation, achieve rapid disassembly and assembly of flange bolts, be adaptable to the operation of various pipeline flanges, and improve work efficiency.

[0015] The present utility model has the characteristics of simple operation, easy processing, and strong versatility, and can be widely applied to the rapid disassembly and assembly of various flange bolts, especially the flange bolts of skid-mounted equipment. Through the present utility model, the manual intensity can be greatly reduced, the work efficiency can be improved, and the cost can be saved. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of an embodiment of the present invention;

[0017] The reference numerals in the drawings are listed as follows:

[0018] 1 - connecting ear, 2 - large gear, 3 - fixed ear, 4 - small gear, 5 - fixing bolt, 6 - square column, 7 - baffle, 8 - rotation hole, 9 - fixing slot, 10 - sliding slot. Detailed Embodiment

[0019] For a better understanding of the present utility model, the present utility model will be specifically described below through embodiments. It is necessary to point out here that the following embodiments are only used to further illustrate the present utility model and cannot be construed as limiting the protection scope of the present utility model. Some non-essential improvements and adjustments made by those skilled in the art based on the content of the present utility model still fall within the protection scope of the present utility model.

[0020] Embodiment

[0021] As Figure 1 shown, a tool for disassembling and assembling flange bolts in a narrow space of a skid-mounted device includes a large gear 2 and a small gear 4. The large gear 2 includes two semi-circles, and each semi-circle has teeth 11 on its inner circumference. The teeth of the small gear 4 are located on the outer circumference and mesh with the teeth of the large gear 2. The middle of the small gear 4 has a square column 6 corresponding to the connection hole of the socket head of the flange bolt; the two semi-circles respectively have fixing structures for fixing each other.

[0022] The fixing structure includes a fixing ear 3 and a connecting ear 1. The fixing ear 3 is fixed on the semi-circle. The connecting ear 1 extends from the fixing ear 3 in a direction away from the semi-circle and can be connected to one end of the other semi-circle without the fixing ear 3. Specifically, in this embodiment, the connecting ear 1 is connected to the fixing bolt 5 fixed on the corresponding end of the other semi-circle.

[0023] The connecting ear 1 includes a sliding groove 10 parallel to the arc of the connected semi-circle and for the fixing bolt 5 to slide. The width of the sliding groove 10 is not less than the diameter of the fixing bolt 5. A number of fixing card slots 9 recessed towards the center of the circle for positioning the fixing ear 3 are distributed in the sliding groove 10.

[0024] A rotation hole 8 may be provided on the outer periphery of the large gear 2. When a tool is inserted into the rotation hole 8 to rotate the outer large gear 2, the large gear 2 drives the small gear 4 to rotate. The square column 6 of the small gear 4 is connected to the hole of the socket head, driving the socket head to make a rotational motion. The bottom of the socket head is sleeved on the flange bolt, thereby removing the flange bolt.

[0025] Preferably, a protective baffle 7 covering the teeth of the large gear 2 and the small gear 4 is provided along the inner periphery of the large gear 2.

[0026] Preferably, the tooth height of the teeth of the large gear 2 gradually decreases from the middle of the semi-circle to both ends. It can meet various sizes of flanges, and can be adjusted in size in cooperation with the sliding groove. The tooth shape is approximately elliptical (as shown by R0 and R1 in the figure).

[0027] Through experimental comparison, when using the present utility model to disassemble and assemble the flange bolts of the pipeline of the skid-mounted equipment, it saves an average of 30 - 60 minutes compared with before, and can greatly reduce the labor intensity of workers and save costs.

[0028] The above description is only a preferred embodiment of the present utility model, and is not a limitation to the utility model in other forms. Any person skilled in the art may use the disclosed technical content to make changes or equivalent changes to equivalent embodiments, but as long as it does not depart from the technical solution content of the present utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims

1. A disassembly tool for flange bolts in a small space, characterized in that It includes a large gear and a small gear, the large gear includes two semicircles, the inner circumference of each semicircle has gear teeth, the gear teeth of the small gear are located on the outer circumference and mesh with the gear teeth of the large gear, and the middle part of the small gear has a square column corresponding to the socket head of the flange bolt to be disassembled; the two semicircles respectively have fixing structures for fixing each other, the fixing structures include fixing ears and connecting ears, the fixing ears are fixed on the semicircles, the connecting ears extend from the fixing ears in a direction away from the semicircles, and can be connected to the end of the other semicircle that does not have a fixing ear, a protective baffle covering the gear teeth of the large gear and the small gear is provided along the inner circumference of the large gear, and a rotating hole is provided on the outer circumference of the large gear.

2. The disassembly tool for flange bolts in a small space according to claim 1, characterized in that The connecting ear is connected with a fixing bolt fixed on the corresponding end of the other semicircle.

3. The disassembly tool for flange bolts in a pry-mounted narrow space according to claim 2, characterized in that The connecting ear comprises a sliding groove which is parallel to the connected semicircular arc and for the fixing bolt to slide, and the width of the sliding groove is not less than the diameter of the fixing bolt.

4. The disassembly tool for flange bolts in a pry-mounted narrow space according to claim 3, characterized in that The sliding groove is provided with a plurality of fixing grooves which are recessed toward the center of the circle and are used for positioning the fixing ears.

5. The disassembly tool for flange bolts in a small space according to claim 1, characterized in that The tooth height of the gear teeth of the large gear gradually decreases from the middle to the two ends of the semicircle.

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