Automatic cutting and chamfering equipment for nodular cast iron micro-jacking pipe source

Abstract

The utility model discloses a nodular cast iron micro pipe jacking source automatic cutting and chamfering device which comprises a front pipe frame and a rear pipe frame which are used for bearing and conveying pipes, the front pipe frame is connected with a pipe cutting machine, the pipe cutting machine is used for cutting the pipes, the pipe cutting machine is connected with an inner and outer chamfering machine, and the inner and outer chamfering machine conducts inner and outer ring chamfering treatment on the two ends of the pipes cut by the pipe cutting machine. The inner and outer chamfering machine is connected with the rear pipe frame, and the cut pipe is conveyed to the rear pipe frame from the inner and outer chamfering machine. The nodular cast iron micro-jacking pipe source automatic cutting and chamfering equipment can improve the cutting and chamfering efficiency of the micro-jacking pipe source, reduce the number of manual posts and greatly save the production cost of enterprises.

Description

TECHNICAL FIELD

[0001] The utility model relates to the production technology field of nodular cast iron pipe, in particular to a nodular cast iron micro-top pipe source automatic cutting chamfering equipment. BACKGROUND

[0002] An important application scenario of the nodular cast iron pipe is trenchless technology, and the trenchless construction technology is used for laying and updating the nodular cast iron pipeline without excavation of the ground surface. The trenchless construction has the characteristics of not damaging the environment and not affecting the traffic, and can be used for construction of various underground pipelines in some regions where excavation construction cannot be implemented, such as busy urban areas, historical conservation areas, crop and vegetation conservation areas, and crossing highways, railways, buildings and rivers and lakes. Thanks to the rapid economic development and infrastructure construction in China, trenchless technology has developed rapidly in China in recent years. Common trenchless construction technologies mainly include the traction method and the pipe jacking method.

[0003] The pipe jacking technology is a trenchless pipe laying construction technology used in municipal construction. The pipe diameter is generally DN300-DN2200. The 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 advantage that excavation pipe laying cannot match. The working principle of the pipe jacking technology is to use the thrust of the main jacking oil cylinder to push the tool pipe or the tunneling machine from the working well through the soil layer to the receiving well and then hoist it. At the same time, the pipeline following the tool pipe or the tunneling machine is buried between the two wells, realizing trenchless laying of underground pipelines.

[0004] At present, the effective length of the nodular cast iron pipe in China is mainly 6m, but due to the influence of special construction scenes, there is often not enough large site to excavate a 6m pipe jacking construction well, and the larger the pipe jacking construction well, the higher the cost. Therefore, 5m, 4m, 3m, 2m special length pipe jacking and 1m micro pipe jacking are correspondingly generated. For the production of special length pipe jacking and micro pipe jacking, the 6m pipe source is mainly cut to the target length, and the cut end is treated with inner and outer chamfering, and then subsequent production processes are carried out. Especially for DN300-DN1000 1m and 2m micro pipe jacking double insertion pipe sources, a pipe is often cut multiple times, and then the inner and outer chamfering of both ends is processed, the process is complex, the efficiency is low, and it seriously affects the daily production organization and order delivery.

[0005] The micro-top pipe source is a double-insert pipe section with a length of 1 m or 2 m, which is cut into multiple pipe sections according to the required length and chamfered at both ends on a pipe with an effective length of 6 m. The existing production equipment and process are to use a cutting machine provided with multiple groups of towing wheels and movable cutting knives to cut the pipe into multiple pipe sections, then use a lifting tool to lift and transport the pipe sections one by one to an inner and outer chamfering machine, first chamfer the outer end, and then chamfer the inner end, wherein the turning operation is also performed during the inner and outer chamfering process. The production process is highly repetitive, the equipment or pipe needs to be moved multiple times, the efficiency is relatively low, the personnel configuration is large, and the comprehensive cost is high. Content of the utility model

[0006] The utility model discloses a ductile cast iron micro-top pipe source automatic cutting chamfering equipment to solve the problems in the above background technology.

[0007] To achieve the above object, the utility model provides the following technical scheme: a ductile cast iron micro-top pipe source automatic cutting chamfering equipment, including bearing and conveying pipe's front pipe frame and rear pipe frame, the front pipe frame is connected cutting pipe machine, and cutting pipe machine is used for cutting pipe, and cutting pipe machine is connected inner and outer chamfering machine, and inner and outer chamfering machine carries out inner and outer chamfering processing to the both ends of pipe after cutting pipe machine cutting, and inner and outer chamfering machine is connected with rear pipe frame, and the pipe after cutting is conveyed to rear pipe frame from inner and outer chamfering machine.

[0008] Preferably, the cutting pipe machine includes a frame one, a group of supporting rollers are arranged on the frame one, the group of supporting rollers are used to support the pipe and drive the pipe to move axially, a stop wheel is arranged on one side of the frame one, which is used to limit one end of the pipe, a cutting module is arranged at the top end of the frame one, which is used to cut the pipe, and a pipe socket collecting box is arranged below the stop wheel, which is used to collect the pipe socket ring segment cut down.

[0009] Preferably, the inner and outer chamfering machine includes a frame two, a driven supporting roller is arranged on the frame two, which is used to support the pipe and drive the pipe to rotate, a driving supporting roller is arranged at the top end of the frame two, which is used to drive the pipe to rotate in combination with the pipe, and two groups of chamfering grinding wheels are arranged at both ends of the frame two, which are used to chamfer the two ends of the pipe.

[0010] Preferably, the chamfering grinding wheel is a conical diamond grinding wheel, and the chamfering grinding wheel is driven by a motor.

[0011] Preferably, the front pipe frame is rotatably connected with two pipe lifting frames at the side edges, the free ends of the pipe lifting frames are driven by lifting cylinders installed at the bottom of the pipe lifting frames, the top pipe conveying track of the front pipe frame is obliquely arranged, which is used to convey the pipe to the cutting pipe machine, and wear-resistant polyethylene plates are laid on the track.

[0012] Preferably, the top track of the rear pipe frame is obliquely arranged, which is used to store the chamfered pipe, and a polyurethane buffer layer is laid on the top track of the rear pipe frame.

[0013] Preferably, the front pipe frame and the rear pipe frame are both welded by 200*100 I-beams, and the two are consistent in the direction of inclination, and the inclination angle is 1.5 degrees.

[0014] Compared with the prior art, the utility model has the beneficial effects as follows:

[0015] The ball ductile iron micro-top pipe source automatic cutting chamfering equipment realizes automatic synchronous pipe feeding, 1m and 2m pipe section cutting, pipe section moving and transporting, two-end inner and outer chamfering and pipe discharging. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic diagram of the utility model;

[0017] Figure 2 It is the front view of Figure 1

[0018] Figure 3 It is the pipe cutting machine structure schematic diagram in the utility model;

[0019] Figure 4 It is the inner and outer chamfering machine structure schematic diagram in the utility model;

[0020] Figure 5 It is the front pipe frame structure schematic diagram in the utility model.

[0021] In the drawing: 1, front pipe frame; 2, pipe cutting machine; 21, frame one; 22, blocking wheel; 23, supporting roller group; 24, cutting module; 3, inner and outer chamfering machine; 31, frame two; 32, driven supporting wheel; 33, driving supporting wheel; 34, chamfering grinding wheel; 4, rear pipe frame; 5, pipe lifting frame; 6, lifting cylinder. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Reference Figure 1 and Figure 5 ​The 6M pipe source entering the workshop is stored on the front pipe rack 1, the front pipe rack 1 track adopts a 200*100 I-shaped steel welded frame, the surface is paved with wear-resistant polyethylene plates, the support beam is designed to bear 15 tons, and long-term high-load operation is ensured. The pipe rack is equipped with two sets of SC200 lifting cylinders 6 driven lifting pipe racks 5, the lifting angle is 5°, and the track is designed to be inclined (1.5°), so that the cast pipe is smoothly slid and accurately sent to the next station.

[0024] Reference Figure 2 The pipe cutting is performed by the pipe cutting machine 2, which cuts the 6-meter-long cast pipe into 1-3-meter customized short pipes, supports the cutting of the ring segment of the socket and the continuous cutting of multiple segments. The pipe cutting machine 2 includes a blocking wheel 22, a roller set 23, and a rack one 21, wherein the blocking wheel system is used to block the pipe socket end face during cutting to prevent the cutting position from shifting, the material is made of 40Cr (HRC45-50 hardness), and the built-in bearing and lubrication point can withstand an axial thrust of 1 ton; the roller set 23 is designed with double-drive support wheels, covering a cutting range of 1-3m; the roller set 23 drives the pipe body to feed axially to the preset cutting position, the rack one 21 is a gantry frame made of profile steel welded structure, the top is equipped with linear guides and rack-driven cutting trolleys, the cutting module 24 includes a cutting motor (≥7.5kW, 2000rpm) driving a 386mm outer diameter, 30mm inner diameter, and 5mm thickness diamond cutting piece, the lifting and walking are precisely controlled by a servo motor (≥850W); the cutting motor is placed on top of the gantry and walks, and the cutting is in the form of upward cutting. The cutting process is that the cast pipe enters the pipe cutting station, the blocking wheel 22 locks the pipe end, the diamond cutting piece rotates at high speed to complete the ring segment or segmented cutting of the socket, and after cutting is completed, the short pipe is pushed to the chamfering station.

[0025] Reference Figure 3 The inner and outer chamfering is performed on both ends of the cut short pipe to chamfer the cast iron outer chamfer and the lining inner chamfer, which facilitates the installation and use of the subsequent ductile cast iron pipe micro-top pipe. The rack two 31 of the inner and outer chamfering machine 3 is equipped with independent chamfering wheels 34 on both sides, the chamfering wheels 34 use conical diamond wheels, which facilitate the use of the same wheel for inner and outer chamfering and can achieve the corresponding required effect. The working process is that the short pipe cut to the required length enters the chamfering machine, the driven roller 32 and the driving roller 33 on the rack two 31 jointly drive the pipe body to rotate, the servo cylinders on both sides push the chamfering wheels 34 to complete the outer chamfering of both ends, after the outer chamfering is completed, the wheel position and angle are switched, and the inner chamfering of both ends is performed. After the inner and outer chamfering of both ends is completed, the pneumatic locking device is released, the driven roller 32 moves out, and the double-insert short pipe rolls into the rear pipe rack 4.

[0026] Rear pipe rack 4 is used to store cut and chamfered double-insertion pipe segments. Automatic unloading is achieved via a non-powered inclined track, protecting the pipe coating. The track design uses a 200×100 I-beam frame with a 1.5° inclination angle and a polyurethane buffer layer to prevent impact damage. The crossbeams are designed to bear 5 tons and support the storage of short pipes of different lengths from 1 to 3 meters. The entire pipe unloading process involves the cut pipe segments sliding into rear pipe rack 4 after chamfering, automatically aligning themselves by gravity, and then being retrieved by workers from the rear end of the rack.

[0027] The entire cutting and chamfering process is fully automated and integrated, reducing manual intervention from material feeding and cutting to chamfering. High processing precision is achieved through servo drive and intelligent detection technology, ensuring a cutting length error of ≤±0.5mm and a chamfer angle deviation of ≤±2°. Strong versatility allows for rapid switching of pipe diameter and cutting length (1-3m) from DN300 to DN1000 via parameterized settings, adapting to diverse order requirements. High overall efficiency is achieved, with the total processing time for a single double-insertion pipe section expected to be less than 3 minutes, significantly reducing the overall cost of pipe cutting.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ductile cast iron micro-topping pipe source automatic cutting and chamfering equipment, comprising a front pipe rack (1) and a rear pipe rack (4) for carrying and conveying the pipe, characterized in that: The front pipe frame (1) is connected with a pipe cutting machine (2), the pipe cutting machine (2) is used for cutting a pipe, the pipe cutting machine (2) is connected with an inner and outer chamfering machine (3), the inner and outer chamfering machine (3) is used for chamfering the inner and outer circles of the pipe cut by the pipe cutting machine (2), the inner and outer chamfering machine (3) is connected with a rear pipe frame (4), and the cut pipe is conveyed from the inner and outer chamfering machine (3) to the rear pipe frame (4).

2. The ductile iron micro-pipe source automatic cutting and chamfering equipment according to claim 1, characterized in that: The pipe cutting machine (2) comprises a frame one (21), the frame one (21) is provided with a roller set (23), the roller set (23) is used for supporting the pipe and driving the pipe to move axially, one side of the frame one (21) is provided with a blocking wheel (22) for limiting one end of the pipe, and the top end of the frame one (21) is provided with a cutting module (24) for cutting the pipe.

3. The ductile iron micro-pipe source automatic cutting and chamfering equipment according to claim 2, characterized in that: The inner and outer chamfering machine (3) comprises a frame two (31), the frame two (31) is provided with a driven idler (32) for supporting the pipe and driving the pipe to rotate, the top end of the frame two (31) is provided with a driving idler (33) for abutting the pipe and driving the pipe to rotate, and the two ends of the frame two (31) are provided with two groups of chamfering grinding wheels (34) for chamfering the two ends of the pipe.

4. The ductile iron micro-pipe source automatic cutting and chamfering equipment according to claim 3, characterized in that: The chamfering grinding wheel (34) is a conical diamond grinding wheel, and the chamfering grinding wheel (34) is driven by a motor.

5. The ductile iron micro-tube source automatic cutting and chamfering equipment according to claim 1, characterized in that: The side edge of the front pipe frame (1) is rotationally connected with two pipe lifting frames (5), the free ends of the pipe lifting frames (5) are driven by lifting cylinders (6) installed at the bottom of the pipe lifting frames (5), the top of the front pipe frame (1) is provided with an inclined pipe conveying track for conveying the pipe to the pipe cutting machine (2), and wear-resistant polyethylene plates are arranged on the track.

6. The ductile iron micro-pipe source automatic cutting and chamfering equipment according to claim 5, characterized in that: The top track of the rear pipe frame (4) is inclined, used for storing the chamfered pipe, and a polyurethane buffer layer is arranged on the top track of the rear pipe frame (4).

7. The ductile iron micro-pipe source automatic cutting and chamfering equipment according to claim 6, characterized in that: The front pipe frame (1) and the rear pipe frame (4) are both welded from 200*100 I-shaped steel, and the inclination directions of the two are consistent, and the inclination angles of the two are both 1.5 degrees.

Images