Nodular cast iron pipe any-length cutting equipment

Abstract

The utility model discloses a nodular cast iron pipe cutting device with any length, which comprises a rack and a walking track which are sequentially arranged from front to back, and a cutting riding wheel group, a pipe body riding wheel group and a socket riding wheel group are sequentially arranged on the walking track in a rolling manner; a socket catch wheel and a socket riding wheel set are arranged on the front side and the rear side of the upper surface of the rack respectively, the socket riding wheel set comprises a pair of riding wheels which are symmetrically arranged, and one riding wheel is connected with a gear motor. The cutting riding wheel set, the pipe body riding wheel set and the inserting opening riding wheel set each comprise a vehicle frame, a pair of riding wheels are symmetrically arranged on the upper portion of each vehicle frame, and idler wheels connected with the walking rails in a rolling mode are arranged at the bottoms of the vehicle frames. And a cutting device is arranged on the frame of the cutting riding wheel group. The nodular cast iron pipe cutting equipment with any length can effectively meet the requirement for cutting nodular cast iron pipes with any length and DN600-DN2200 nodular cast iron pipes with any length.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe cutting, in particular to a cutting device for ductile iron pipes with any length. Background Art

[0002] Ductile iron pipes are pipes cast by high-speed centrifugation of cast iron molten metal after adding a spheroidizing agent, and are widely used in trenchless construction technology. Trenchless construction technology is the laying and renewal of ductile iron pipelines without excavating the ground surface. Trenchless construction has the characteristics of not damaging the environment and not affecting traffic, and can carry out the construction of various underground pipelines in some areas where excavation construction cannot be implemented, such as downtown areas, historical site protection areas, crop and vegetation protection areas, and crossing highways, railways, buildings, rivers and lakes, etc. At present, common trenchless construction technologies are mainly divided into the pulling method and the pipe jacking method.

[0003] Pipe jacking technology is a trenchless pipe-laying construction technology for municipal construction. The pipe diameter of the constructed pipeline is generally DN600 - DN2200. Its advantages are that it does not affect the surrounding environment or has little impact, the construction site is small, the noise is small, and it can work deep underground, which is an incomparable advantage of open-cut pipe laying. The working principle of pipe jacking technology is to use the thrust of the main jacking cylinder to push the tool pipe or tunneling machine from the working shaft through the soil layer and lift it in the receiving shaft. At the same time, the pipeline following the tool pipe or tunneling machine is buried between the two shafts to achieve trenchless laying of underground pipelines.

[0004] At present, the effective length of domestic ductile iron pipes is mainly 6m, with one end being a socket and the other end being a spigot. During laying, the sockets and spigots of two pipes are connected. However, for pipes used in pipe jacking, due to the influence of special construction scenarios, there is often not enough space to excavate a 6m pipe jacking construction shaft. At the same time, the larger the pipe jacking construction shaft, the higher its cost. Therefore, the demand for micro pipe jacking with lengths of 5m, 4m, 3m, and 2m is gradually increasing. However, due to the influence of the mainstream market demand, the effective length of ductile iron pipes is still mainly 6m. A single 6m length cannot meet all requirements, and the pipe source needs to be cut and processed again. At present, the cutting method for ductile iron pipes is mainly manual cutting. Affected by the cutting equipment and the cutting experience of operators, the cutting process is time-consuming and laborious, and the quality of the cut pipes cannot be guaranteed. Content of the Utility Model

[0005] In view of the technical problems existing in the background art, the utility model provides a cutting device for ductile iron pipes with any length, which can effectively meet the cutting of ductile iron pipes with a diameter of DN600 - DN2200 at any length.

[0006] The technical solution for the utility model to solve the technical problems is as follows:

[0007] The utility model relates to a cutting device for ductile iron pipes with any length, which comprises a frame and a walking track arranged in sequence from front to back. A cutting support wheel group, a pipe body support wheel group and a socket support wheel group are sequentially and rotatably arranged on the walking track; on the upper surface of the front and back sides of the frame, a socket retaining wheel and a socket support wheel group are respectively arranged. The socket support wheel group comprises a pair of symmetrically arranged support wheels, and a reduction motor is connected to one of the support wheels; the cutting support wheel group, the pipe body support wheel group and the socket support wheel group all comprise a vehicle frame. On the upper part of each vehicle frame, a pair of symmetrically arranged support wheels are arranged, and on the bottom, rollers which are in rolling connection with the walking track are arranged; a cutting device is arranged on the vehicle frame of the cutting support wheel group.

[0008] Further, the outer diameters of the support wheels of the socket support wheel group, the cutting support wheel group, the pipe body support wheel group and the socket support wheel group are the same, the diameter is 500 mm to 1000 mm, and the distance between the two symmetrically arranged support wheels of each support wheel group is 200 mm to 600 mm.

[0009] Further, the support wheels adopt a rubber-coated design, the thickness of the rubber coating on the outer wall is 20 mm to 50 mm, and the rubber-coated material is polyurethane or nylon rubber.

[0010] Further, gears are rotatably arranged at the bottoms of the vehicle frames of the cutting support wheel group, the pipe body support wheel group and the socket support wheel group, and the gears are in meshing connection with a rack parallel to the walking track.

[0011] Further, the cutting device comprises a motor mounting plate rotatably connected to the vehicle frame. A cutting drive motor is mounted on the motor mounting plate. Above the outer end of the motor mounting plate, a cutting mechanism connected to the output end of the cutting drive motor is arranged. Between the cutting mechanism and the vehicle frame below it, a lifting device is arranged, and a cutting blade is arranged at the output end of the cutting mechanism.

[0012] Further, the lifting device is a cylinder, an electric cylinder or a hydraulic cylinder.

[0013] Further, the material of the cutting blade is diamond, and the size is preferably: diameter 420 mm, hole 32 mm, thickness 4 mm.

[0014] Further, track brake devices are respectively arranged between the vehicle frames of the cutting support wheel group, the pipe body support wheel group and the socket support wheel group and the walking track.

[0015] Further, it further comprises a cantilever crane, and a lifting appliance is arranged on the cantilever crane.

[0016] Further, it further comprises a dust removal device.

[0017] Further, it further comprises an operating platform, and the reduction motor, the cutting drive motor, the lifting device, the cantilever crane and the dust removal device are respectively connected to the operating platform.

[0018] Compared with the prior art, the ductile iron pipe cutting device with arbitrary length of the present utility model has the following beneficial effects:

[0019] (1) The structure of the present utility model is novel, reasonably designed, and easy to operate. The cutting of ductile iron pipes can be achieved without complex adjustment and control.

[0020] (2) Through the fixedly arranged socket supporting wheel set and the cutting supporting wheel set, pipe body supporting wheel set and spigot supporting wheel set that can freely move on the walking track, the positions of each supporting wheel set can be conveniently adjusted, and the pipe can be rotated through the socket supporting wheel set, facilitating the precise cutting of ductile iron pipes with arbitrary lengths.

[0021] (3) By limiting the outer diameter of the supporting wheels and the distance between the supporting wheels, the present utility model meets the use of various ductile iron pipes with DN600 - DN2200. And after the pipe diameter is switched, the distance between the supporting wheels does not need to be adjusted, which is simple and convenient.

[0022] (4) A lifting device is arranged in the cutting device of the present utility model, which can change the cutting operation surface height of the cutting disc through the lifting device when the pipe diameter changes, so as to realize the cutting of pipes with various pipe diameters.

[0023] (5) By arranging a track brake device between the vehicle frames of the cutting supporting wheel set, pipe body supporting wheel set and spigot supporting wheel set and the walking track, it is convenient to lock each supporting wheel set during pipe cutting to ensure the stability of the equipment during cutting.

[0024] (6) By arranging a cantilever crane and a lifting tool, it is convenient for the lifting of pipe fittings after cutting, and when cutting longer lengths such as 5.5m and 5.75m, the corresponding pipe heads can be hung. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the present utility model;

[0026] Figure 2 is Figure 1 the schematic view in the A - A direction in

[0027] Figure 3 is Figure 1 the schematic view in the B - B direction in

[0028] Figure 4 is Figure 1 the top view of

[0029] Figure 5 is the schematic diagram of the cutting supporting wheel set in the present utility model;

[0030] Figure 6 is the schematic diagram of the pipe body supporting wheel set in the present utility model;

[0031] In the figure: 1, frame; 2, traveling track; 3, socket retaining wheel; 4, socket supporting wheel set; 5, cutting supporting wheel set; 6, pipe body supporting wheel set; 7, spigot supporting wheel set; 8, cutting device; 81, cutting drive motor; 82, cutting blade; 83, lifting device; 84, motor mounting plate; 85, cutting mechanism; 9, reduction motor; 10, supporting wheel; 11, vehicle frame; 12, roller; 14, cantilever crane; 15, sling; 16, operating platform; 17, track brake device; 18, gear; 19, rack. Specific embodiments

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this disclosure belongs. The "upper", "lower", "left", "right", "front", "rear", "inside", "outside", etc. used in the specification and claims of this patent application of the present disclosure are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship also changes accordingly. Those parts of the present invention not described in detail are well-known technologies in the technical field.

[0033] As Figures 1-6As shown in the figure, a cutting device for ductile iron pipes with any length according to the present utility model includes a frame 1 and a walking track 2 arranged in sequence front and back in the same direction. A cutting support wheel group 5, a pipe body support wheel group 6, and a socket support wheel group 7 are sequentially and rotatably arranged on the walking track 2. On the upper surface of the front and back sides of the frame 1, a socket stop wheel 3 and a socket support wheel group 4 are respectively arranged. The socket support wheel group 4 includes a pair of symmetrically arranged support wheels 10, and a reduction motor 9 is connected to one of the support wheels 10. The cutting support wheel group 5, the pipe body support wheel group 6, and the socket support wheel group 7 all include a vehicle frame 11. On the upper part of each vehicle frame 11, a pair of support wheels 10 are symmetrically and evenly arranged, and rollers 12 that are rotatably connected to the walking track 2 are arranged at the bottom. A cutting device 8 for cutting ductile iron pipes is arranged on the vehicle frame 11 of the cutting support wheel group 5, and the cutting device 8 is located on the front side of its upper support wheel 10. In this embodiment, the socket support wheel group 4, the cutting support wheel group 5, the pipe body support wheel group 6, and the socket support wheel group 7 are in the same direction. The socket support wheel group 4 is fixedly designed, and the other three support wheel groups can move freely to adjust the length position. The support wheels 10 on the four support wheel groups respectively correspond to each other and are used to support the ductile iron pipe to be cut. The support wheel 10 connected to the reduction motor 9 on the socket support wheel group 4 is the driving wheel, and the other support wheel 10 and the support wheels 10 of the other support wheel groups are all driven wheels. By rotating the driving wheel, the ductile iron pipe placed on it can be driven to rotate, facilitating the need for cutting. In this embodiment, the socket stop wheel 3 is fixedly designed and plays a positioning role for the ductile iron pipe to be cut. When the pipe rotates and is cut, the socket end face is always in contact with the socket stop wheel 3, ensuring that the cutting position does not change and the cutting length is accurate.

[0034] In this embodiment, the cutting device 8 includes a motor mounting plate 84 rotatably connected to the vehicle frame 11. A cutting drive motor 81 is mounted on the motor mounting plate 84. Above the outer end of the cutting drive motor 81, a cutting mechanism 85 connected to the output end of the cutting drive motor 81 is arranged. A lifting device 83 is arranged between its lower part and the vehicle frame 11. The output end of the cutting mechanism 85 is provided with a cutting blade 82. The material of the cutting blade 82 is diamond, with a diameter preferably of 420 mm, a hole of 32 mm, and a thickness of 4 mm. In this embodiment, the cutting drive motor 81 rotates to drive the cutting mechanism 85 to rotate, and then drives the cutting blade 82 mounted on the output end of the cutting mechanism 85 to rotate, thereby realizing the cutting of the ductile iron pipe. By the lifting device 83, the motor mounting plate 84 can be pushed to rotate, and then the cutting operation surface of the cutting blade 82 can be changed to meet the cutting requirements of pipes with different diameters. Preferably, the lifting device 83 is a cylinder, an electric cylinder, or a hydraulic cylinder.

[0035] In this embodiment, the outer diameters of the supporting wheels 10 of the socket supporting wheel set 4, the pipe body supporting wheel set 6, and the spigot supporting wheel set 7 are the same, with a diameter ranging from 500 mm to 1000 mm, preferably 800 mm. The distance between two symmetrically arranged supporting wheels 10 of each supporting wheel set is 200 mm to 600 mm, preferably 400 mm. Further, the supporting wheel 10 adopts a rubber-coated design, and the thickness of the rubber coating on the outer wall is 20 mm to 50 mm. The rubber-coated material is polyurethane or nylon rubber.

[0036] In this embodiment, a gear 18 is rotatably arranged at the bottom of the frame 11 of the cutting supporting wheel set 5, the pipe body supporting wheel set 6, and the spigot supporting wheel set 7. The gear 18 is meshed with a rack 19 parallel to the traveling track 2. When the cutting supporting wheel set 5, the pipe body supporting wheel set 6, and the spigot supporting wheel set 7 move freely on the traveling track 2, they can be driven electrically or manually. At the same time, through the adjustment of the gear 18 and the rack 19, it can not only assist in positioning when the cutting supporting wheel set 5, the pipe body supporting wheel set 6, and the spigot supporting wheel set 7 move, but also ensure the stability of the movement and cutting of each supporting wheel set.

[0037] In this embodiment, track brake devices 17 are respectively arranged between the frames 11 of the cutting supporting wheel set 5, the pipe body supporting wheel set 6, and the spigot supporting wheel set 7 and the traveling track 2, which are used to lock each supporting wheel set and the traveling track 2 through the track brake devices 17 after the cutting supporting wheel set 5, the pipe body supporting wheel set 6, and the spigot supporting wheel set 7 move into place.

[0038] In this embodiment, the equipment may further include a cantilever crane 14, and a lifting appliance 15 is arranged on the cantilever crane 14, which facilitates the hoisting of the cut pipe fittings through the cantilever crane 14 and the lifting appliance 15, and when cutting longer lengths such as 5.5 m and 5.75 m, the corresponding pipe heads can be hooked.

[0039] In this embodiment, the equipment may further include a dust removal device, which is arranged at the cutting supporting wheel set 5 and is used to remove the iron filings and dust generated during cutting to avoid pollution.

[0040] In this embodiment, the equipment may further include an operating platform 16 to facilitate the operation of the operator. The reduction motor 9, the cutting drive motor 81, the lifting device 83, the cantilever crane 14, and the dust removal device are respectively connected to the operating platform 16.

[0041] During application, according to the target length that needs to be cut for the ductile iron pipe, first adjust the position of the cutting support wheel set 5 on the traveling track 2, and then lock the track through the track brake device 17 to prevent the movement of the support wheel set during the cutting operation from affecting the cutting operation; then move and position the pipe body support wheel set 6 and the socket support wheel set 7 on the traveling track 2 according to the length of the cut socket section, and also lock the track using the track brake device 17; then perform the cutting operation through the cutting device 8. In this way, after the cutting operation is completed, the spigot section of the pipe can fall smoothly on the socket support wheel set 4 and the cutting support wheel set 5, and the socket section of the pipe can fall smoothly on the pipe body support wheel set 6 and the socket support wheel set 7. When the cutting length changes, reposition the three movable support wheel sets. The design of the support wheel 10 of the present utility model supports the full-caliber placement of DN600 - DN2200. When the diameter of the cut pipe changes, adjust the lifting height of the cutting blade through the lifting device 83 to ensure normal cutting operation.

[0042] In addition to the common cutting requirements of 5m, 4m, 3m, and 2m for pipe jacking, when there are special length cutting operation requirements, such as lengths of 5.75m, 5.5m, etc., at this time, an extension track can be set outside the traveling track 2, or the traveling track can also be set to a longer length. Move the pipe body support wheel set 6 and the socket support wheel set 7 to the extension track to make room for the operation space. Then position and fix the cutting support wheel set 5 according to the target length, and then perform the cutting; after cutting, the pipe falls on the socket support wheel set 4 and the cutting support wheel set 5, and the corresponding pipe head is hung by the lifting tool of the cantilever crane 14.

Claims

1. A device for cutting ductile iron pipes to any length, characterized in that: The invention comprises a frame (1) and a travel track (2) which are arranged in sequence at the front and rear ends, wherein a cutting wheel group (5), a pipe body wheel group (6) and a socket wheel group (7) are arranged on the travel track (2) in a rolling manner; a socket stopper wheel (3) and a socket wheel group (4) are arranged on the front and rear sides of the upper surface of the frame (1), respectively, wherein the socket wheel group (4) comprises a pair of symmetrically arranged wheels (10), wherein one of the wheels (10) is connected to a reduction motor (9); the cutting wheel group (5), the pipe body wheel group (6) and the socket wheel group (7) all comprise a frame (11), wherein a pair of wheels (10) are symmetrically arranged on the upper part of each frame (11), and a roller (12) which is rollably connected to the travel track (2) is arranged on the bottom; and a cutting device (8) is arranged on the frame (11) of the cutting wheel group (5).

2. The device for cutting ductile iron pipes to any length according to claim 1, characterized in that: The outer diameters of the supporting wheels (10) of the socket supporting wheel group (4), the cutting supporting wheel group (5), the pipe body supporting wheel group (6) and the plug supporting wheel group (7) are consistent, and the diameters are 500 mm to 1000 mm. The distance between two symmetrical supporting wheels (10) of each supporting wheel group is 200 mm to 600 mm. The supporting wheels (10) are designed with rubber coating, and the thickness of the outer wall rubber coating is 20 mm to 50 mm. The rubber coating material is polyurethane or nylon rubber.

3. The device for cutting ductile iron pipes to any length according to claim 1, characterized in that: A gear (18) is rotatably provided at the bottom of the frame (11) of the cutting wheel assembly (5), the tube wheel assembly (6) and the socket wheel assembly (7), and the gear (18) is meshedly connected with a rack (19) parallel to the travel track (2).

4. A ductile iron pipe arbitrary length cutting device according to any one of claims 1 to 3, characterized in that: The cutting device (8) comprises a motor mounting plate (84) rotatably connected to a vehicle frame (11), a cutting drive motor (81) being mounted on the motor mounting plate (84), a cutting mechanism (85) connected to an output end of the cutting drive motor (81) being arranged above an outer end portion thereof, a lifting device (83) being arranged below the motor mounting plate and between the vehicle frame (11), and a cutting blade (82) being arranged at the output end of the cutting mechanism (85).

5. The device for cutting ductile iron pipes to any length according to claim 4, characterized in that: The lifting device (83) is a pneumatic cylinder, an electric cylinder or a hydraulic cylinder.

6. The device for cutting ductile iron pipes to any length according to claim 4, characterized in that: The cutting blade (82) is made of diamond.

7. A ductile iron pipe arbitrary length cutting device according to claim 5 or 6, characterized in that: Track brake devices (17) are respectively provided between the frames (11) of the cutting wheel assembly (5), the pipe body wheel assembly (6) and the socket wheel assembly (7) and the travel track (2).

8. The device for cutting ductile iron pipes to any length according to claim 7, characterized in that: It also comprises a cantilever crane (14), on which a sling (15) is arranged.

9. The device for cutting ductile iron pipes to any length according to claim 8, characterized in that: A dust removal device is also included.

10. The device for cutting ductile iron pipes to any length according to claim 9, characterized in that: It also includes an operating table (16), and the reduction motor (9), the cutting drive motor (81), the lifting device (83), the cantilever crane (14) and the dust removal device are respectively connected to the operating table (16).

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