Drilling clamp for circular steel pipe
By designing a rotatable compression roller and a circular steel pipe fixture that supports the roller, the frictional damage and labor-intensive problems during multiple drilling of steel pipes in the prior art are solved, and the rotation effect is achieved without damage and effort.
Patent Information
- Application Number
- CN202422304572.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-21
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-21
AI Technical Summary
Existing circular steel pipe drilling fixtures require manual rotation when drilling multiple times, causing friction to damage the surface of the steel pipe and laborious.
A clamp including a cantilever, a pressing roller and a support roller is designed to fix and rotate the steel pipe by driving the pressing roller and a pressing plate by a cylinder. The rotatable support roller and pressing roller are used to avoid friction, and fix and rotate with the assistance of a rubber pad.
The circular steel pipe is achieved without friction damage during drilling and has labor-saving rotation, improving the convenience and safety of operation.
Smart Images
Figure CN223160562U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of round pipe fixing, and particularly relates to a drilling fixture for a circular steel pipe. Background Art
[0002] In the manufacturing of metal products, circular steel pipes are usually used. For connection requirements, it is sometimes necessary to drill holes in the side walls of the circular steel pipes to facilitate the insertion of connecting pieces. The fixtures used for drilling circular steel pipes in the prior art often keep the circular steel pipes fixed after clamping. However, in actual production, according to requirements, sometimes multiple holes need to be drilled in different directions at the same length position on the circular steel pipe, and then the circular steel pipe needs to be rotated. According to the existing fixtures, after the fixture releases the circular steel pipe, when manually rotating the circular steel pipe, friction will be generated between the circular steel pipe and the fixture, scratching the surface of the circular steel pipe. Moreover, the steel pipe is generally relatively heavy, and with the addition of friction, a relatively large force needs to be applied to manually rotate the circular steel pipe, which is rather laborious. Content of the Utility Model
[0003] In order to solve the above deficiencies in the prior art, the utility model provides a drilling fixture for a circular steel pipe.
[0004] In order to achieve the above technical effects, the utility model adopts the following scheme:
[0005] A drilling fixture for a circular steel pipe, comprising a base. Above the base, there is a horizontal cantilever, and the cantilever is driven to move up and down by a lifting mechanism. At the lower end of the cantilever, two rotating pressing rollers are installed. The two pressing rollers are horizontally arranged and the lengths of the two pressing rollers are on the same straight line;
[0006] Below any of the pressing rollers, there is a roller set. The roller set includes two supporting rollers rotatably installed on the base. The two supporting rollers are both arranged parallel to the pressing rollers, and the two supporting rollers are symmetrically arranged on both sides below the pressing roller. The cross-sections of the pressing roller and the two supporting rollers are distributed in an isosceles triangle shape;
[0007] On the base, there is a pillar. Between the two pressing rollers, there is a suspended pressing plate. The pressing plate is driven to move up and down by a first cylinder installed on the pillar.
[0008] Preferably, the lifting mechanism includes a lifting seat, a guide rail and a second cylinder. The guide rail is vertically installed on the pillar. The lifting seat is installed on the guide rail and slides vertically. The second cylinder is vertically installed on the pillar, and the telescopic rod of the second cylinder is fixedly connected to the lifting seat. The lifting seat is fixedly connected to the middle of the cantilever.
[0009] Preferably, on the support column, there is a protruding top plate above the lifting seat, and the top plate is connected to the lifting seat by a spring.
[0010] Preferably, a rubber soft pad is fixedly provided at the lower end of the pressing plate.
[0011] Preferably, a layer of rubber pad is sleeved on the surfaces of the pressing roller and the two supporting rollers.
[0012] Compared with the prior art, the beneficial effects are as follows:
[0013] The utility model has a simple structure and is convenient to use. Place the circular steel pipe to be drilled on the two groups of roller sets and support it between the two supporting rollers of the same group. Then, the cantilever descends to drive the pressing roller to press on the upper end of the circular steel pipe, and the pressing plate is lowered by the first cylinder to press on the circular steel pipe to keep the circular steel pipe from rotating. When rotation is needed, the first cylinder raises the pressing plate to separate it from the circular steel pipe, and then the circular steel pipe can be rotated. Since both the supporting roller and the pressing roller can rotate, friction during the rotation of the circular steel pipe is avoided, and the rotation is labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is the front view schematic diagram of the utility model;
[0015] Figure 2 is the rear view schematic diagram of the utility model;
[0016] Figure 3 is the side view schematic diagram of the utility model.
[0017] Reference numerals: 1, base; 2, supporting roller; 3, pressing roller; 4, cantilever; 5, lifting seat; 6, support column; 7, first cylinder; 8, pressing plate; 9, rubber soft pad; 10, guide rail; 11, second cylinder; 12, spring; 13, circular steel pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.
[0019] A drilling fixture for a circular steel pipe, including a base 1. Above the base 1, there is a horizontal cantilever 4, and the cantilever 4 is suspended above the base 1. The cantilever 4 is driven to move up and down by a lifting mechanism. At the lower end of the cantilever 4, two rotating pressing rollers 3 are installed. The two pressing rollers 3 are horizontally arranged and the lengths of the two pressing rollers 3 are on the same straight line;
[0020] Below any of the pressing rollers 3, there is a roller set. The roller set includes two supporting rollers 2 rotatably installed on the base 1. The two supporting rollers 2 are both arranged parallel to the pressing roller 3, and the two supporting rollers 2 are symmetrically arranged on both sides below the corresponding pressing roller 3. The cross sections of the pressing roller 3 and the corresponding two supporting rollers 2 are distributed in an isosceles triangle shape.
[0021] On the base 1, there are columns 6. Between the two pressing rollers 3, there is a suspended pressing plate 8. The pressing plate 8 is driven to move up and down by a first air cylinder 7 installed on the column 6.
[0022] Place the circular steel pipe 13 to be drilled on the two roller sets and support it between the two supporting rollers 2 of the same group. Then, the cantilever 4 descends to drive the pressing roller 3 to press on the upper end of the circular steel pipe 13, and the pressing plate 8 is lowered by the first air cylinder 7 to press on the circular steel pipe 13 to keep the circular steel pipe 13 from rotating. When rotation is needed, the first air cylinder 7 raises the pressing plate 8 to separate it from the circular steel pipe 13, and then the circular steel pipe 13 can be rotated. Since both the supporting roller 2 and the pressing roller 3 can rotate, the friction during the rotation of the circular steel pipe 13 is avoided, and the rotation is labor-saving.
[0023] In a preferred technical solution, the lifting mechanism includes a lifting seat 5, a guide rail 10, and a second air cylinder 11. The guide rail 10 is vertically installed on the column 6. The lifting seat 5 is installed on the guide rail 10 to slide vertically. The second air cylinder 11 is vertically installed on the column 6, and the telescopic rod of the second air cylinder 11 is fixedly connected to the lifting seat 5. The lifting seat 5 is fixedly connected to the middle of the cantilever 4.
[0024] The second air cylinder 11 drives the lifting seat 5 to move up and down on the guide rail 10, thereby driving the cantilever 4 to move up and down.
[0025] In a preferred technical solution, the column 6 protrudes with a top plate located above the lifting seat 5. The top plate and the lifting seat 5 are connected by a spring 12.
[0026] When the pressing roller 3 presses on the circular steel pipe, the elastic force of the spring 12 pushes the lifting seat 5 downward, further assisting the pressing roller 3 to press on the circular steel pipe.
[0027] In a preferred technical solution, a rubber soft pad 9 is fixedly provided at the lower end of the pressing plate 8.
[0028] The lower end of the pressing plate 8 presses on the circular steel pipe through the rubber soft pad 9. The friction force between the rubber soft pad 9 and the circular steel pipe is large, thereby further keeping the circular steel pipe from rotating.
[0029] In a preferred technical solution, a layer of rubber pad is sleeved on the surfaces of the pressing roller 3 and the two supporting rollers 2.
[0030] Through the rubber pad, the hard contact between the circular steel pipe and the pressing roller 3 and the supporting roller 2 is avoided, so as to prevent the surface of the circular steel pipe from being scratched.
[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model 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 should not be construed as a limitation to the present utility model.
[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.
[0033] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.
Claims
1. A drilling fixture for a circular steel pipe, characterized in that, It includes a base (1), above which there is a horizontal cantilever (4). The cantilever (4) is driven to move up and down by a lifting mechanism. At the lower end of the cantilever (4), two rotating pressing rollers (3) are installed. The two pressing rollers (3) are horizontally arranged and the lengths of the two pressing rollers (3) are on the same straight line. Below any of the pressing rollers (3), there is a roller set. The roller set includes two supporting rollers (2) rotatably installed on the base (1). The two supporting rollers (2) are both arranged parallel to the pressing roller (3), and the two supporting rollers (2) are symmetrically arranged on both sides below the pressing roller (3). The cross-sections of the pressing roller (3) and the two supporting rollers (2) are distributed in an isosceles triangle shape. On the base (1), there is a pillar (6). Between the two pressing rollers (3), there is a suspended pressing plate (8). The pressing plate (8) is driven to move up and down by a first cylinder (7) installed on the pillar (6).
2. The drilling fixture for circular steel pipes according to claim 1, characterized in that, The lifting mechanism includes a lifting seat (5), a guide rail (10), and a second cylinder (11). The guide rail (10) is vertically installed on the pillar (6). The lifting seat (5) is installed on the guide rail (10) and slides vertically. The second cylinder (11) is vertically installed on the pillar (6), and the telescopic rod of the second cylinder (11) is fixedly connected to the lifting seat (5). The lifting seat (5) is fixedly connected to the middle of the cantilever (4).
3. The drilling fixture for circular steel pipes according to claim 2, characterized in that, On the pillar (6), there is a protruding top plate above the lifting seat (5). The top plate and the lifting seat (5) are connected by a spring (12).
4. The drilling fixture for circular steel pipes according to claim 1, characterized in that, At the lower end of the pressing plate (8), a rubber soft pad (9) is fixedly provided.
5. The drilling fixture for circular steel pipes according to claim 1, characterized in that, On the surfaces of the pressing roller (3) and the two supporting rollers (2), a layer of rubber pad is sleeved.