Auxiliary device facilitating sleeve cutting

By designing auxiliary devices for supports and roller bushings, the problem of requiring multiple people to work together to cut steel fire pipes was solved, enabling a single person to quickly adjust the cutting length, improving construction efficiency and reducing costs.

CN224254328UActive Publication Date: 2026-05-19NANTONG DAXIN ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANTONG DAXIN ENG
Filing Date
2025-06-03
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

In existing technologies, cutting steel fire-fighting pipes requires the cooperation of multiple people, which is time-consuming, resulting in low construction efficiency and high costs.

Method used

An auxiliary device including a support and a roller bushing is designed. The support is connected to the transverse bushing. The outer side of the roller bushing is covered with a grease layer. The support and the roller bushing are made of angle steel and galvanized steel pipe. The roller bushing can rotate flexibly on the transverse bushing, which is convenient for single-person operation to adjust the cutting length.

Benefits of technology

It enables a single person to quickly adjust the cutting length of steel pipes, improving construction efficiency, reducing the number of operators and time spent, and lowering construction costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an auxiliary device convenient for sleeve cutting, which comprises a first support (1) and a second support (2), a transverse shaft sleeve (3) is connected between the first support (1) and the second support (2), a roller shaft sleeve (6) is sleeved on the outer side of the transverse shaft sleeve (3), a gap is arranged between the outer ring of the transverse shaft sleeve (3) and the inner ring of the roller shaft sleeve (6), and a butter layer (5) is filled in the gap. The length of the roller shaft sleeve (6) is smaller than that of the transverse shaft sleeve (3), a first sealing plate (4) is arranged on the right side of the roller shaft sleeve (6), and a second sealing plate (7) is arranged on the left side of the roller shaft sleeve (6). According to the steel pipe cutting device, in the cutting process, a steel pipe can be flexibly moved, the length needed for cutting the steel pipe can be rapidly adjusted, the cutting construction efficiency is improved, and therefore the construction cost is reduced.
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Description

Technical Field

[0001] This utility model belongs to the technical field of auxiliary devices for building construction, and relates to an auxiliary device that facilitates sleeve cutting. Background Technology

[0002] Steel pipes possess excellent mechanical properties. Made from high-quality steel, they have high strength and hardness, capable of withstanding significant external pressure and impact, ensuring stability and safety during construction. In building plumbing and electrical installations, situations often arise where pipes need to pass through complex structures such as walls and ceilings. Precise steel pipe cutting allows for better adaptation to these complex construction environments, ensuring the smooth installation of plumbing and electrical lines and pipes.

[0003] Currently, when cutting steel fire-fighting pipes at construction sites, the total weight of a single 6-meter-long steel fire-fighting pipe is approximately 70.2 kilograms, as the entire pipe is 6 meters long and weighs about 11.7 kilograms per meter. This makes it inconvenient for operators to move around and adjust the cutting length during the cutting process, resulting in a longer cutting time. It requires two people to work together to complete the operation, which reduces work efficiency and increases construction costs. Utility Model Content

[0004] In view of the above-mentioned problems in the prior art, this application provides an auxiliary device for facilitating sleeve cutting.

[0005] The technical solution of this utility model is as follows:

[0006] An auxiliary device for facilitating sleeve cutting includes a support one and a support two. A transverse bushing is connected between the support one and the support two. A roller bushing is fitted on the outer side of the transverse bushing. A gap is provided between the outer ring of the transverse bushing and the inner ring of the roller bushing and filled with a grease layer. The length of the roller bushing is less than the length of the transverse bushing. A sealing plate one is provided on the right side of the roller bushing, and a sealing plate two is provided on the left side of the roller bushing.

[0007] As a preferred embodiment of this utility model, support one and support two are made of angle steel.

[0008] As a preferred embodiment of this utility model: the angle steel is 50×50×5mm in size and 300mm in length.

[0009] In a preferred embodiment of this utility model, the gap between the outer ring of the transverse bushing and the inner ring of the roller bushing is 5mm.

[0010] In a preferred embodiment of this utility model: the length of the transverse bushing is 260mm and it is made of galvanized steel pipe with an outer diameter of 40mm, and the length of the roller bushing is 160mm and it is made of galvanized steel pipe with an outer diameter of 50mm.

[0011] In a preferred embodiment of this utility model, the distance between support one and support two is 200mm.

[0012] The beneficial effects of this utility model are:

[0013] This utility model discloses an auxiliary device for facilitating pipe cutting. A roller bushing is fitted on the outer side of a transverse bushing. A gap is provided between the outer ring of the transverse bushing and the inner ring of the roller bushing, and the gap is filled with a layer of grease. When the steel fire pipe moves along the outer ring of the roller bushing, it drives the roller bushing to rotate flexibly. This allows the steel pipe to be moved flexibly during the cutting process and the required length of the steel pipe to be cut to be quickly adjusted. This facilitates single-person operation, improves cutting efficiency, reduces the number of operators and the time spent cutting steel pipes, thereby reducing construction costs. Attached Figure Description

[0014] Figure 1 This is a front view of an auxiliary device for facilitating sleeve cutting according to the present invention;

[0015] Figure 2 This is a top view of the present invention;

[0016] Figure 3 This is a sectional view along direction A.

[0017] In the diagram: 1-Support 1; 2-Support 2; 3-Transverse bushing; 4-Sealing plate 1; 5-Grease layer; 6-Roller bushing; 7-Sealing plate 2. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] like Figure 1-3 As shown, an auxiliary device for facilitating sleeve cutting includes a support 1 and a support 2. A transverse bushing 3 is connected between the support 1 and the support 2. A roller bushing 6 is fitted on the outer side of the transverse bushing 3. A gap is provided between the outer ring of the transverse bushing 3 and the inner ring of the roller bushing 6 and filled with a grease layer 5. The length of the roller bushing 6 is less than the length of the transverse bushing 3. A sealing plate 4 is provided on the right side of the roller bushing 6 and a sealing plate 7 is provided on the left side of the roller bushing 6.

[0020] Support 1 and Support 2 are made of angle steel, which has high strength and can withstand large loads. Its cross-sectional shape is right angle, which has good stability under stress and can resist deformation and torsion. The angle steel is 50×50×5mm in size and 300mm in length. The gap between the outer ring of the transverse bushing 3 and the inner ring of the roller bushing 6 is 5mm. The transverse bushing 3 is 260mm long and is made of galvanized steel pipe with an outer diameter of 40mm. The roller bushing 6 is 160mm long and is made of galvanized steel pipe with an outer diameter of 50mm. The galvanized steel pipe is treated by hot-dip galvanizing or electro-galvanizing to form a uniform and strongly adherent zinc layer. This zinc layer is tightly bonded to the steel pipe substrate, which improves the corrosion resistance of the steel pipe and thus extends its service life. The distance between Support 1 and Support 2 is 200mm.

[0021] The following steps are used to manufacture this device:

[0022] S1. On-site, galvanized angle steel of specification 50×50×5 is cut into two angle steels with a length of 300mm to obtain support 1 and support 2.

[0023] S2. Cut the Ø40 galvanized steel pipe into steel pipes with a length of 260mm to serve as transverse bushings 3;

[0024] S3. Cut the Ø50 galvanized steel pipe into 160mm long steel pipes to serve as roller bushings 6.

[0025] S4. Insert the Ø40 transverse bushing 3 into the Ø50 roller bushing 6. The outer ring of the transverse bushing 3 and the inner ring of the roller bushing 6 have a 5mm gap and are filled with grease to form a grease layer 5. The right side of the roller bushing 6 is equipped with a sealing plate 1 4 and the left side of the roller bushing 6 is equipped with a sealing plate 2 7.

[0026] S5. The transverse bushing 3 and the roller bushing 6 are welded together onto the support 1 and support 2 in step S1. The distance between support 1 and support 2 is 200mm. The roller bushing 6 is located in the middle of the transverse bushing 3.

[0027] Following the above steps, multiple identical auxiliary devices can be made. In normal use, 2 to 3 auxiliary devices are grouped together and placed at the feed end of the hydraulic pipe cutter. The entire steel pipe is placed on the roller bushing. Since there is a gap between the outer ring of the transverse bushing and the inner ring of the roller bushing, and the gap is filled with grease, the sealing plate 1 4 and sealing plate 2 7 can effectively protect the grease from contamination and oxidation, thereby extending the shelf life of the grease layer 5. When the steel pipe moves along the outer ring of the roller bushing, it drives the roller bushing to rotate flexibly. During the cutting process, the steel pipe can be moved flexibly and the required cutting length can be quickly adjusted by a single person.

[0028] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, and for those of ordinary skill in the art, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details.

Claims

1. An auxiliary device for facilitating sleeve cutting, characterized in that: It includes a support one (1) and a support two (2), a transverse bushing (3) is connected between the support one (1) and the support two (2), a roller bushing (6) is fitted on the outer side of the transverse bushing (3), the outer ring of the transverse bushing (3) and the inner ring of the roller bushing (6) are separated and filled with a grease layer (5), the length of the roller bushing (6) is less than the length of the transverse bushing (3), a sealing plate one (4) is provided on the right side of the roller bushing (6), and a sealing plate two (7) is provided on the left side of the roller bushing (6).

2. The auxiliary device for facilitating sleeve cutting according to claim 1, characterized in that: The first support (1) and the second support (2) are made of angle steel.

3. The auxiliary device for facilitating sleeve cutting according to claim 2, characterized in that: The angle steel has a model number of 50×50×5mm and a length of 300mm.

4. The auxiliary device for facilitating sleeve cutting according to claim 1, characterized in that: The gap between the outer ring of the transverse bushing (3) and the inner ring of the roller bushing (6) is 5mm.

5. The auxiliary device for facilitating sleeve cutting according to claim 1, characterized in that: The transverse bushing (3) is 260 mm long and is made of galvanized steel pipe with an outer diameter of 40 mm. The roller bushing (6) is 160 mm long and is made of galvanized steel pipe with an outer diameter of 50 mm.

6. The auxiliary device for facilitating sleeve cutting according to any one of claims 1 to 5, characterized in that: The distance between support one (1) and support two (2) is 200mm.