Pipe wall cutting device for large-pipe-diameter welding machine

Abstract

The utility model discloses a pipe wall cutting device for a large pipe diameter welding machine, which comprises a cutter holder and a cutter head, the cutter head is movably connected to one end of the cutter holder, the other end of the cutter holder is fixedly connected with a hydraulic motor, a driving wheel and a driven wheel are rotatably connected in the cutter holder, and the driven wheel and the cutter head are coaxially arranged. The driving wheel is coaxially and fixedly connected with an output shaft of the hydraulic motor, the driving wheel and the driven wheel are in transmission through a chain, the driven wheel is movably connected with the tool apron through a bearing, concentric shafts are arranged on the two sides of the driven wheel, cutter heads are installed at the free ends of the two concentric shafts, fixing lugs are arranged on the two sides of the tool apron, and an anti-shaking mechanism is arranged on one fixing lug. The hydraulic motor is used for providing rotating power for the cutter head, the power is high, the device is suitable for cutting large-pipe-diameter plastic pipelines, and sliding of the cutting device on the welding machine body can be effectively reduced through the arrangement of the anti-shaking mechanism when the cutting device works.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic pipe welding machines, and more specifically, it relates to a pipe wall cutting device for a welding machine. Background Technology

[0002] After the plastic pipes are transported to the construction site, they need to be welded together by a welding machine. The welding machine includes a welding machine body, a hydraulic station, a cutting device, and a welding cake. The welding machine body fixes the ends of the two pipes and moves the two pipes by controlling the hydraulic station. The cutting device is used to remove the oxide layer from the pipe and cut and level it. The welding cake is used to melt the ends of the pipe into a gel-like state.

[0003] The cutting device includes a tool holder, a tool disc, and a motor for controlling the rotation of the tool disc. The tool disc is movably connected to the tool holder, and the motor is fixed to the tool holder and driven by the tool disc via a chain. In traditional cutting devices, both ends of the tool holder are equipped with U-shaped lugs. When cutting the pipe wall, the tool holder is placed on the welding machine body and then fixed to the welding machine body by its own weight. However, when the pipe wall is relatively thick, the traditional cutting device has some drawbacks during use, such as weak cutting force due to motor-controlled tool disc rotation and tool holder movement on the welding machine body. Therefore, there is an urgent need to improve the transmission cutting device. Utility Model Content

[0004] The purpose of this invention is to provide a pipe wall cutting device for a large-diameter welding machine that solves the above-mentioned problems.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A pipe wall cutting device for a large-diameter pipe welding machine includes a tool holder and a cutter disc. The cutter disc is movably connected to one end of the tool holder, and a hydraulic motor is fixedly connected to the other end of the tool holder. A drive wheel and a driven wheel are rotatably connected in the tool holder. The driven wheel is coaxially arranged with the cutter disc, and the drive wheel is coaxially fixedly connected to the output shaft of the hydraulic motor. The drive wheel and the driven wheel are driven by a chain. The driven wheel is movably connected to the tool holder through a bearing. Concentric shafts are arranged on both sides of the driven wheel, and a cutter disc is installed at the free end of each of the two concentric shafts.

[0007] The tool holder is provided with fixing ears on both sides, and one of the fixing ears is provided with an anti-shaking mechanism.

[0008] Preferably, the anti-shake mechanism includes a first handle and an anti-shake component. The first handle has a clearance groove for the palm to pass through. The anti-shake component is installed at the bottom of the first handle and faces the U-shaped groove on the fixing ear. The top of the first handle is connected to the knife holder through a connector.

[0009] Preferably, the fixed ear with the anti-shake mechanism is configured as a movable fixed ear, the top of the movable fixed ear is provided with a groove, one end of the connector is fixedly connected to the fixed end of the handle, the other end is placed in the groove and abuts against the side wall of the groove, and the connector is fixedly connected to the top of the movable fixed ear by bolts.

[0010] Preferably, the bottom end of the first grip is raised upward to form a protrusion relative to the side of the movable fixed ear, the anti-sway component is installed on the protrusion, the anti-sway component includes an anti-sway block, a compression spring, an adjusting bolt and a wing nut, one end of the adjusting bolt is connected to the anti-sway block, and the other end passes through the protrusion and is threadedly connected to the wing nut, the compression spring is sleeved on the adjusting bolt, one end of which is connected to the protrusion and the other end is connected to the anti-sway block.

[0011] Preferably, the inner side of the anti-sway block is arc-shaped.

[0012] Preferably, the adjusting bolt includes an inner rod and a hollow outer rod. One end of the inner rod is connected to the anti-sway block, and the other end is inserted into the hollow outer rod and threadedly connected to it. The other end of the hollow outer rod opposite the inner rod is threadedly connected to a wing nut.

[0013] Preferably, a second handle is provided on the end of the tool holder near the hydraulic motor.

[0014] The beneficial effects of this utility model are: the hydraulic motor provides rotational power to the cutter head, which is powerful and suitable for cutting large-diameter plastic pipes; the anti-sway mechanism can effectively reduce the slippage of the cutting device on the welding machine body during operation. Attached Figure Description

[0015] Figure 1 A schematic diagram of a pipe wall cutting device for a large-diameter pipe welding machine;

[0016] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0018] Figure 4 This is a schematic diagram of the adjusting bolt;

[0019] In the diagram: 1. Tool holder; 2. Hydraulic motor; 3. Driven fixed lug; 4. Driven wheel; 5. Chain; 6. Anti-sway mechanism; 61. First grip; 62. Anti-sway assembly; 621. Anti-sway block; 622. Compression spring; 623. Adjusting bolt; 6231. Inner rod; 6232. Hollow outer rod; 624. Wing nut; 7. Second grip; 8. Connecting piece. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0022] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0023] according to Figure 1-4 As shown, a pipe wall cutting device for a large-diameter welding machine includes a tool holder 1 and a cutter disc. The cutter disc is movably connected to one end of the tool holder 1, and a hydraulic motor 2 is fixedly connected to the other end of the tool holder 1. A drive wheel and a driven wheel 4 are rotatably connected in the tool holder 1. The driven wheel 4 is coaxially arranged with the cutter disc, and the drive wheel is coaxially fixedly connected to the output shaft of the hydraulic motor 2. The drive wheel and the driven wheel 4 are driven by a chain 5. The driven wheel 4 is movably connected to the tool holder 1 through a bearing. Concentric shafts are arranged on both sides of the driven wheel 4, and the cutter disc is installed on the free end of each concentric shaft. The tool holder 1 is made of flat aluminum alloy material, and fixed ears are arranged on both sides of the tool holder 1. The two fixed ears are symmetrical about the cutter disc, and an anti-sway mechanism 6 is provided on one of the fixed ears. The hydraulic motor 2 provides rotational power to the cutter disc, which is powerful and suitable for cutting large-diameter plastic pipes. The anti-sway mechanism 6 can effectively reduce the slippage of the cutting device on the welding machine body during operation.

[0024] according to Figure 1-4 As shown, the anti-sway mechanism 6 includes a first handle 61 and an anti-sway component 62. The first handle 61 has a clearance groove for the palm to pass through. The fixed ear on which the anti-sway mechanism 6 is installed is a movable fixed ear 3. The bottom end of the first handle 61 is raised upward to form a protrusion on the side opposite to the movable fixed ear 3. The anti-sway component 62 is installed on the protrusion and faces the U-shaped groove on the fixed ear. The top end of the first handle 61 is connected to the knife holder 1 through a connector 8. The top of the movable fixed ear 3 has a groove. One end of the connector 8 is fixedly connected to the fixed end of the handle, and the other end is placed in the groove and abuts against the side wall of the groove. At the same time, the connector 8 is fixedly connected to the top end of the movable fixed ear 3 by bolts.

[0025] according to Figure 1-4As shown, the anti-sway assembly is installed on the protrusion. The anti-sway assembly 62 includes an anti-sway block 621, a compression spring 622, an adjusting bolt 623, and a wing nut 624. One end of the adjusting bolt 623 is connected to the anti-sway block 621, and the other end passes through the protrusion and is threaded to the wing nut 624. The compression spring 622 is sleeved on the adjusting bolt 623, with one end connected to the protrusion and the other end connected to the anti-sway block 621. The inner side of the anti-sway block 621 is arc-shaped.

[0026] according to Figure 1-4 As shown, the adjusting bolt 623 includes an inner rod 6231 and a hollow outer rod 6232. One end of the inner rod 6231 is connected to the anti-sway block 621, and the other end is inserted into the hollow outer rod 6232 and threadedly connected to it. The other end of the hollow outer rod, opposite the inner rod 6231, is threadedly connected to a wing nut 624. A second handle 7 is provided on the end of the tool holder 1 near the hydraulic motor 2. The adjusting bolt 623, in conjunction with the wing nut 624, is used to control the deformation of the compression spring 622. The greater the deformation of the compression spring 622, the smaller the buffer space of the anti-sway block 621.

[0027] The welding machine body is provided with two parallel and spaced crossbars, and two fixing ears are used to fix them to the two crossbars respectively. Therefore, the curvature of the inner side of the anti-sway block 621 is consistent with the curvature of the crossbar. In addition, the anti-sway block 621 is always in contact with the outer wall of the crossbar during operation. The movable fixing ear 3 is spaced apart from the anti-sway block 621 on the side near the cutter head. This space is used for the fixing ear to separate from the crossbar. Because the U-shaped groove on the fixing ear limits the cutter holder 1 to only swing up and down, the anti-sway block 621 is also used to limit the up and down swing of the cutter holder 1 on the welding machine body. It should be noted that one side of the cutter holder 1 is hinged to the shaft pin of the welding machine body. Therefore, the movement trajectory of the movable fixing ear 3 is arc-shaped.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0030] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pipe wall cutting device for a large-diameter pipe welding machine, comprising a tool holder (1) and a tool disc, characterized in that: The cutter head is movably connected to one end of the cutter holder (1), and the other end of the cutter holder (1) is fixedly connected to a hydraulic motor (2). The cutter holder (1) is rotatably connected to a drive wheel and a driven wheel (4). The driven wheel (4) is coaxially arranged with the cutter head. The drive wheel is coaxially fixedly connected to the output shaft of the hydraulic motor (2). The drive wheel and the driven wheel (4) are driven by a chain (5). The driven wheel (4) is movably connected to the cutter holder (1) through a bearing. Concentric shafts are provided on both sides of the driven wheel (4). The free ends of the two concentric shafts are equipped with cutter heads. The tool holder (1) is provided with fixing ears on both sides, and one of the fixing ears is provided with an anti-shaking mechanism (6).

2. The pipe wall cutting device for a large-diameter welding machine according to claim 1, characterized in that: The anti-shake mechanism (6) includes a first handle (61) and an anti-shake component (62). The first handle (61) has a clearance groove for the palm to pass through. The anti-shake component (62) is installed at the bottom of the first handle (61) and faces the U-shaped groove on the fixing ear. The top of the first handle (61) is connected to the knife holder (1) through a connector (8).

3. The pipe wall cutting device for a large-diameter welding machine according to claim 2, characterized in that: The fixed ear equipped with the anti-shaking mechanism (6) is configured as a movable fixed ear (3). The top of the movable fixed ear (3) is provided with a groove. One end of the connector (8) is fixedly connected to the fixed end of the handle, and the other end is placed in the groove and abuts against the side wall of the groove. At the same time, the connector (8) is fixedly connected to the top of the movable fixed ear (3) by bolts.

4. The pipe wall cutting device for a large-diameter welding machine according to claim 3, characterized in that: The bottom end of the first grip (61) is raised upward relative to the side of the movable fixed ear (3) to form a protrusion. The anti-sway component is installed on the protrusion. The anti-sway component (62) includes a sway block (621), a compression spring (622), an adjusting bolt (623), and a wing nut (624). One end of the adjusting bolt (623) is connected to the sway block (621), and the other end passes through the protrusion and is threaded to the wing nut (624). The compression spring (622) is sleeved on the adjusting bolt (623), with one end connected to the protrusion and the other end connected to the sway block (621).

5. The pipe wall cutting device for a large-diameter welding machine according to claim 4, characterized in that: The inner side of the anti-sway block (621) is set to be arc-shaped.

6. The pipe wall cutting device for a large-diameter welding machine according to claim 5, characterized in that: The adjusting bolt (623) includes an inner rod (6231) and a hollow outer rod (6232). One end of the inner rod (6231) is connected to the anti-sway block (621), and the other end is inserted into the hollow outer rod (6232) and threadedly connected to the hollow outer rod (6232). The other end of the hollow outer rod relative to the inner rod (6231) is threadedly connected to a wing nut (624).

7. The pipe wall cutting device for a large-diameter welding machine according to claim 6, characterized in that: A second handle (7) is provided on one end of the tool holder (1) near the hydraulic motor (2).

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