Construction device and method for embedding a pipe in ballast and a spiral pipe assembly

Abstract

The present application relates to the technical field of preventing ballast collapse in railway, especially relates to the related technical field of burying pipe material in ballast, in particular to a construction device and method for burying pipe material in ballast and a spiral pipe assembly. In order to solve the problems of low construction efficiency, high labor intensity and material waste caused by the unrecyclable buried pipe material in the existing construction method for burying pipe material in ballast, a new construction device for burying pipe material in ballast is provided, which comprises a motor, a linear drive pair and a spiral pipe assembly. The spiral pipe assembly comprises an inner shaft and a pre-buried spiral pipe. The outer periphery of the inner shaft is provided with an external spline, and the inner periphery of the pre-buried spiral pipe is provided with an internal spline matched with the external spline. The outer periphery of the cylinder is provided with spiral vanes. The output shaft of the motor is fixedly connected with the top end of the column of the inner shaft. The present application effectively improves the construction efficiency, reduces the labor intensity of workers and reduces material waste.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of preventing ballast collapse in railway bed, in particular to the related technical field of burying pipes in ballast of railway bed, and specifically to a construction device and method for burying pipes in ballast of railway bed and a spiral pipe assembly. BACKGROUND

[0002] At present, the mileage of operating railways in China is increasing year by year, and various diseases of the early built railways gradually enter the high incidence period due to reasons such as running vibration and geological changes. The subsidence disease of the line roadbed will cause the depression of the line track, which will seriously affect the running stability and safety of the train.

[0003] In view of the above problems, the railway maintenance department needs to detect the line regularly to find the subsidence disease of the roadbed in time, and uses the punching and grouting method to fill and reinforce the roadbed. Before grouting, pipes need to be buried in advance in the ballast of the railway bed to prevent the collapse of the ballast of the railway bed when punching and grouting in the deep part of the roadbed. When burying the pipes, a reverse conical pit is first dug out by manual work at the corresponding position of the ballast of the railway bed, then the prepared PVC pipe is vertically placed in the pit, then the excavated ballast is backfilled between the reverse conical pit and the outer wall of the PVC pipe by manual work, and finally the backfilled ballast is tamped by a handheld tamping machine to fix the PVC pipe in the reverse conical pit. Then the roadbed is punched and grouted through the PVC pipe, and the filling and reinforcement of the roadbed are completed. However, the existing pipe burying method has low construction efficiency and high labor intensity, because all the work of pipe burying is completed by manual work, and the ballast of the railway bed is not easy to dig and often collapses. In addition, the PVC pipe is not easy to take out, so the existing method is to permanently leave the PVC pipe after burying, which cannot be reused, causing waste of materials. SUMMARY

[0004] In order to solve the problems of low construction efficiency, high labor intensity and waste of materials caused by the unrecyclable buried pipes in the existing construction method for burying pipes in the ballast of the railway bed, the present application provides a new construction device and method for burying pipes in the ballast of the railway bed and a spiral pipe assembly.

[0005] The application is implemented by adopting the following technical scheme: a construction device for burying a pipe in ballast, comprising a motor, a linear drive pair for driving the motor to move linearly along the axial direction of the motor (the driving direction of the linear drive pair is the same as the axial direction of the motor, the moving part of the linear drive pair is fixedly connected with the motor, and the fixed part of the linear drive pair is fixed to a certain fixed position; it is known to those skilled in the art that the linear drive pair can be a cylinder drive, a hydraulic drive, an electric push rod, a linear motor or a motor lead screw guide pair, as long as it is a structure capable of driving the motor to move linearly along the axial direction of the motor), and a spiral pipe assembly, which comprises an inner shaft and a pre-buried spiral pipe. The inner shaft comprises a solid cone body with its tapered part downward and a cylinder body fixed coaxially on the top of the solid cone body. An outer spline is arranged on the outer circumferential surface of the cylinder body. The pre-buried spiral pipe comprises a hollow platform body matched with the solid cone body of the inner shaft (here, the matching means that the shape and size of the hollow platform body are corresponding to those of the solid cone body, because the hollow platform body of the pre-buried spiral pipe is sleeved on the solid cone body of the inner shaft and the position of the hollow platform body relative to the solid cone body is positioned during use) and a cylinder body fixedly connected to the top of the hollow platform body and matched with the cylinder body. An inner spline matched with the outer spline is arranged on the inner circumferential surface of the cylinder body. The outer circumferential surface of the cylinder body is discolorized with spiral blades. The output shaft of the motor is fixedly connected with the top end of the cylinder body of the inner shaft.

[0006] The construction method comprises the following steps: 1) sleeving the pre-buried spiral pipe on the inner shaft from the bottom end of the inner shaft upward until the inner circumferential surface of the hollow platform body of the pre-buried spiral pipe is in contact with the outer tapered surface of the solid cone body of the inner shaft and the cylinder body of the pre-buried spiral pipe is connected with the cylinder body of the inner shaft through the spline; 2) starting the motor, rotating the inner shaft under the driving of the motor, and rotating the pre-buried spiral pipe under the spline connection between the inner shaft and the pre-buried spiral pipe; 3) starting the linear drive pair and driving the motor to move downward, at this time, the spiral pipe assembly moves downward, the spiral pipe assembly is rotated into the ballast, and when the spiral pipe assembly reaches the specified depth, the motor is turned off, and then the linear drive pair drives the motor to move upward, at this time, the motor and the inner shaft move upward to the appropriate position, and the pre-buried spiral pipe remains in the ballast; 4) after the punching and grouting work on the roadbed is completed, the linear drive pair drives the motor to move downward until the inner shaft is inserted into the pre-buried spiral pipe and the inner tapered surface of the hollow platform body of the pre-buried spiral pipe is in contact with the outer tapered surface of the solid cone body of the inner shaft; 5) starting the motor to rotate in the opposite direction while the linear drive pair drives the motor to move upward until the pre-buried spiral pipe is rotated out.

[0007] A spiral pipe assembly comprises an inner shaft and a pre-buried spiral pipe, the inner shaft comprises a solid cone with its taper part downward and a cylinder coaxially fixed on the top of the solid cone, the outer periphery of the cylinder is provided with external splines, the pre-buried spiral pipe comprises a hollow base body which is matched with the solid cone of the inner shaft (here, the matching refers to the shape and size corresponding, because the hollow base body of the pre-buried spiral pipe is sleeved on the solid cone of the inner shaft in use) and a cylinder fixedly connected above the hollow base body and matched with the cylinder, the inner periphery of the cylinder is provided with internal splines matched with the external splines, and the outer periphery of the cylinder is fixedly provided with spiral blades. In use, the output shaft of the motor is fixedly connected with the top end of the cylinder of the inner shaft, and then a linear driving pair is used to complete the embedding of the pipe in the ballast bed in cooperation with the motor.

[0008] The beneficial effects of the present application are as follows: by using the spiral pipe assembly in cooperation with the motor and the linear driving pair, the construction of the pipe embedded in the ballast bed is mechanized, compared with the existing manual method, the construction efficiency is effectively improved, and the labor intensity of workers is reduced; meanwhile, after the subsequent punching and grouting work of the roadbed is completed, the pipe can be recycled by using the same device, so as to reduce material waste. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0010] Figure 2 It is a schematic diagram of the structure of the spiral pipe assembly;

[0011] Figure 3 It is a schematic diagram of the structure of the pre-buried spiral pipe;

[0012] Figure 4 It is a schematic diagram of the structure of the inner shaft.

[0013] In the figure: 1 - motor, 2 - lower connecting flange, 3 - pre-buried spiral pipe, 31 - hollow base body, 32 - cylinder, 33 - spiral blade, 4 - inner shaft, 41 - solid cone, 42 - cylinder. DETAILED DESCRIPTION

[0014] As Figure 1 , 2, 3, 4, a construction device for burying pipes in the ballast of the track bed, comprising a motor 1, a linear drive pair for driving the motor 1 to move linearly along the axial direction of the motor 1 (the driving direction of the linear drive pair is the same as the axial direction of the motor 1, the moving part of the linear drive pair is fixedly connected with the motor 1, and the fixed part of the linear drive pair is fixed to a certain fixed position. It is known to those skilled in the art that the linear drive pair can be a cylinder drive, a hydraulic drive, an electric push rod, a linear motor, and a motor lead screw guide pair, as long as it can drive the motor 1 to move linearly along the axial direction of the motor 1), a spiral pipe assembly, the spiral pipe assembly comprising an inner shaft 4 and a pre-buried spiral pipe 3, the inner shaft 4 comprising a solid cone 41 with the cone downward and a cylinder 42 coaxially fixed on the top of the solid cone 41, the outer periphery of the cylinder 42 is provided with external splines, the pre-buried spiral pipe 3 comprises a hollow platform 31 (the hollow platform 31 is a hollow platform with both ends open, and when the hollow platform is matched with the solid cone, the small platform of the hollow platform faces downward) and a cylinder 32 fixedly connected (fixedly connected and the hollow platform 31 is communicated with the cylinder 32) above the hollow platform 31 and matched with the cylinder 42, the inner periphery of the cylinder 32 is provided with internal splines matched with the external splines, and the outer periphery of the cylinder 32 is provided with spiral vanes 33, and the output shaft of the motor 1 is fixedly connected with the top end of the cylinder 42. In specific implementation, the top end of the cylinder 42 is fixedly connected with a lower connecting flange 2, and the output shaft of the motor 1 is fixedly connected with an upper connecting flange, which facilitates the installation and disassembly of the inner shaft 4 and the output shaft of the motor 1. The solid cone 41 is a conical body, the cylinder 42 is a cylindrical body, the cross section of the hollow platform 31 is circular, the cylinder 32 is a cylindrical cylinder, and the structure is specific and standardized. The linear drive pair is a motor lead screw guide pair (the motor lead screw guide pair belongs to the common knowledge of those skilled in the art, including a rotary motor for driving the screw to rotate and a guide rail for guiding the nut on the screw, and the nut is fixedly connected with the motor 1). The solid cone 41, the cylinder 42, the hollow platform 31 and the cylinder 32 are coaxially arranged, and the structure is more stable.

[0015] The construction method comprises the following steps: 1) the embedded spiral pipe 3 is sleeved on the inner shaft 4 from the bottom end of the inner shaft 4 upwards until the inner taper surface of the hollow platform body 31 of the embedded spiral pipe 3 is in abutment with the outer taper surface of the solid taper body 41 of the inner shaft 4 and the cylinder body 32 of the embedded spiral pipe 3 is connected with the column body 42 of the inner shaft 4 through the spline connection; 2) the motor 1 is started, the inner shaft 4 rotates under the driving of the motor 1, and the embedded spiral pipe 3 also rotates under the action of the spline connection between the inner shaft 4 and the embedded spiral pipe 3; 3) the linear driving pair is started and the motor 1 is driven to move downwards, at this time, the spiral pipe assembly moves downwards, the spiral pipe assembly is screwed into the inside of the ballast, when the spiral pipe assembly reaches the specified depth, the motor 1 is turned off, and then the linear driving pair drives the motor 1 to move upwards, at this time, the motor 1 and the inner shaft 4 move upwards to the appropriate position, and the embedded spiral pipe 3 remains in the inside of the ballast; 4) after the punching and grouting work on the roadbed is completed, the linear driving pair drives the motor 1 to move downwards until the inner shaft 4 is inserted into the inside of the embedded spiral pipe 3 and the inner taper surface of the hollow platform body 31 of the embedded spiral pipe 3 is in abutment with the outer taper surface of the solid taper body 41 of the inner shaft 4; 5) the motor 1 is started to rotate reversely while the linear driving pair drives the motor 1 to move upwards until the embedded spiral pipe 3 is rotated out.

[0016] A spiral pipe assembly comprises an inner shaft 4 and an embedded spiral pipe 3. The inner shaft 4 comprises a solid taper body 41 with the taper part downward and a column body 42 coaxially fixed on the top of the solid taper body 41, and the outer periphery surface of the column body 42 is provided with an outer spline. The embedded spiral pipe 3 comprises a hollow platform body 31 matched with the solid taper body 41 of the inner shaft 4 and a cylinder body 32 fixedly connected above the hollow platform body 31 and matched with the column body 42, and the inner periphery surface of the cylinder body 32 is provided with an inner spline matched with the outer spline, and the outer periphery surface of the cylinder body 32 is provided with spiral blades 33. In use, the output shaft of the motor 1 is fixedly connected with the top end of the column body 42 of the inner shaft 4, and then the linear driving pair is used to complete the embedding of the pipe in the ballast together with the motor 1. In the specific implementation, the top end of the column body 42 is fixedly connected with a lower connecting flange 2, which facilitates the installation and dismounting of the output shaft of the motor 1. In the specific implementation, the solid taper body 41 is a conical body, the column body 42 is a cylindrical body, the cross section of the hollow platform body 31 is circular, and the cylinder body 32 is a cylindrical cylinder. The solid taper body 41, the column body 42, the hollow platform body 31 and the cylinder body 32 are coaxially arranged, and the structure is more stable.

Claims

1. A construction method using a construction device for embedding pipes in the ballast of a track bed. The construction device for embedding pipes in the ballast of a track bed includes a motor (1), a linear drive pair for driving the motor (1) to move linearly along the axial direction of the motor (1), and a spiral pipe assembly. The spiral pipe assembly includes an inner shaft (4) and a pre-embedded spiral pipe (3). The inner shaft (4) includes a solid cone (41) with its tapered portion facing downwards and a column (42) coaxially fixed to the top of the solid cone (41). The outer circumferential surface of the column (42) is provided with an external spline. The pre-embedded spiral pipe (3) includes a component that is adapted to the solid cone (41) of the inner shaft (4). A hollow platform (31) and a cylindrical body (32) fixedly connected above the hollow platform (31) and adapted to the column (42), the inner circumferential surface of the cylindrical body (32) is provided with an inner spline adapted to the outer spline, the outer circumferential surface of the cylindrical body (32) is provided with a spiral blade, the output shaft of the motor (1) is fixedly connected to the top end of the column (42) of the inner shaft (4), the top end of the column (42) is fixed with a lower connecting flange (2), the output shaft of the motor (1) is fixed with an upper connecting flange, the solid cone (41), the column (42), the hollow platform (31) and the cylindrical body (32) are arranged coaxially, characterized in that, The method includes the following steps: 1) The pre-embedded spiral tube (3) is sleeved onto the inner shaft (4) from the bottom end upwards until the inner conical surface of the hollow platform (31) of the pre-embedded spiral tube (3) is in contact with the outer conical surface of the solid cone (41) of the inner shaft (4) and the cylinder (32) of the pre-embedded spiral tube (3) is connected to the column (42) of the inner shaft (4) by a spline; 2) The motor (1) is started, and the inner shaft (4) rotates under the drive of the motor (1), and the pre-embedded spiral tube (3) also rotates under the action of the spline connection between the inner shaft (4) and the pre-embedded spiral tube (3); 3) The linear drive pair is started and the drive motor (1) moves downwards. At this time, the spiral tube assembly moves downwards and the spiral tube assembly is screwed into the track bed. Inside the ballast, when the spiral tube assembly reaches the specified depth, the motor (1) is turned off, and then the linear drive auxiliary drive motor (1) moves upward. At this time, the motor (1) and the inner shaft (4) move upward to the appropriate position, and the pre-embedded spiral tube (3) remains inside the ballast bed; 4) After the drilling and grouting work on the subgrade is completed, the linear drive auxiliary drive motor (1) moves downward until the inner shaft (4) is inserted into the pre-embedded spiral tube (3) and the inner conical surface of the hollow platform (31) of the pre-embedded spiral tube (3) is in contact with the outer conical surface of the solid cone (41) of the inner shaft (4); 5) The motor (1) is started to rotate in the opposite direction while the linear drive auxiliary drive motor (1) moves upward until the pre-embedded spiral tube (3) is unscrewed.

2. The method for construction using a construction device for embedding pipes in the ballast bed according to claim 1, characterized in that, The solid cone (41) is a cone, the cylinder (42) is a cylinder, the hollow frustum (31) has a circular cross-section, and the cylindrical body (32) is a cylindrical body.

3. The method for construction using a construction device for embedding pipes in the ballast bed according to claim 2, characterized in that, The linear drive pair is a motor, lead screw, and guide rail pair.

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