Railway cable laying equipment and method

Abstract

The present invention relates to a railway cable laying device and method. The railway cable laying device of the present invention can be conveniently installed on the contact network pillar beside the railway track. The reduction motor drives the active roller to rotate, and the driven roller is detachably installed on the column. The active roller and the driven roller are used together to drive the cable to move forward. The railway cable laying device is controlled by a remote controller. The railway cable laying method of the present invention uses a plurality of the above-mentioned railway cable laying devices. The railway cable laying device first acts as a capstan, and pulls the cable forward through a traction rope. After the cable passes through, the railway cable laying device is used to drive the cable. The front end of the cable is pulled by the traction rope. At the same time, the cable is driven by the railway cable laying devices at various positions. The demand for traction force when pulling the cable can be met, so that the cable can reach the predetermined position within the predetermined time, ensuring that the cable laying construction is completed quickly, avoiding the timeout of the cable laying construction during the skylight time, and ensuring the safety of the construction.

Description

Technical Field

[0001] The invention relates to a cable laying technology, in particular to a railway cable laying device and method. Background Art

[0002] With the leapfrog development of China's railways, the eight vertical and eight horizontal railway network model has gradually taken shape. From the conventional railway with passenger and freight lines to the current high-speed railways, the speed of China's trains is constantly being refreshed. With the rapid development of my country's railway construction, power cable lines have been widely used in railway power supply systems. my country's high-speed railway power 10kV first-level through and comprehensive through lines are located in special cable troughs on both sides of the roadbed and bridges. A power box transformer is set up every 3km to supply power for loads such as section signals, communications, disaster prevention, and video. If a three-core high-voltage cable is used, the weight and volume of the cable per unit length are large, and the length of a single-disk cable cannot be too long. When laying, many cables need to be connected end to end in sequence. At the same time, the bending radius of the three-core cable is large, and it is difficult to construct at the joint. Therefore, in order to reduce the difficulty of transportation and construction, minimize the intermediate joints of the cable, and facilitate transportation and cable deployment and laying, single-core 10kV power cables are basically used in high-speed railway application systems.

[0003] The laying method and quality of single-core 10kV power cables have a direct impact on the service life of power cables. Unqualified cable laying quality and irregular cable laying construction operations will easily cause damage to the cable protective layer and mechanical damage to the cable. In the laying construction of 10kV power cables on railways, different methods such as manual, capstan traction, self-made cable cars or direct laying of rail-based equipment are generally used for cable laying according to the on-site construction conditions. However, the above traditional laying methods are only applicable to situations with good on-site construction conditions. For example, when there is no cross interference, bridges or tunnel sections in the newly built lines, there is no need to consider the length of the laying time limit. When encountering maintenance and overhaul projects for single-core power cables on railways that have been opened for operation, the construction arrangement should put the completion of work and materials in the skylight point, the withdrawal of all personnel, and the elimination of records in the point in the first place. In order to ensure the efficient use of each skylight point and rail vehicles, each skylight point needs to complete the laying of three cables of A, B, and C at the same time. The window time is generally from 00:00 at night to 4:00 in the morning. After the window starts, the cable is transported to the predetermined location by rail equipment, and the laying of 3 reels of single-core high-voltage cables, each about 3 km long, begins. If manual laying is adopted, it is calculated that 300-400 laborers are required in each window. The construction efficiency is low at night, the laborers are difficult to manage, the personnel organization is difficult, the counting of personnel in and out of the fence gate takes a long time, and the risk of normal completion within the window is high; if a motorized capstan is used for traction, although it can overcome the shortcomings of manual laying, the window time is limited, and the capstan traction speed is difficult to meet the requirements. After the wire rope is laid, the use of the capstan to pull the cable will cause the window timeout.

[0004] The existing cable laying methods such as manual shoulder-carrying and motorized capstan traction cannot meet the problem of completing the construction within the time limit. When using the manual shoulder-carrying laying method, there are disadvantages such as high labor intensity, low efficiency, high economic cost investment, and high safety risks; the motorized capstan laying cable has the advantages of greatly reducing the number of workers, reducing labor intensity, high safety, and reducing construction costs. However, the motorized capstan has the problems of slow traction speed (the fastest is one kilometer per hour) when laying the cable, long time to arrange the traction wire rope, and inconvenient transportation of the capstan on the operating line. Summary of the invention

[0005] The purpose of the present invention is to provide a railway cable laying equipment and method to solve the problem that the existing cable laying methods such as manual shoulder carrying and motorized winch traction cannot meet the requirements of completing the construction within the window time.

[0006] The present invention is implemented as follows: a railway cable laying equipment includes a frame, on which a reduction motor, a cable drum mechanism, a controller and a fixed rod extending to one side are arranged, and a clamp is arranged on the fixed rod. The cable drum mechanism includes four columns distributed at the four corners of a rectangle, and two columns located on the same short side of the rectangle form a group, and each group of the columns is respectively provided with a lower bearing seat and a detachably installed upper bearing seat, a driving shaft is arranged on the lower bearing seat, a driving roller is arranged on the driving shaft, a driven shaft is arranged on the upper bearing seat, and a driven roller is arranged on the driven shaft, the rotating shaft of the reduction motor is connected to the driving shaft, the controller is connected to a power supply and electrically connected to the reduction motor, and the controller is wirelessly connected to a remote control.

[0007] The fixing rod comprises a rod-shaped body, the clamp is detachably mounted on one side of one end of the rod-shaped body, a connecting plate is arranged at the other end of the rod-shaped body, and the fixing rod is detachably connected to the frame via the connecting plate.

[0008] Two protrusions are arranged on the side of the fixing rod, and the two protrusions are located between the two legs of the clamp.

[0009] The end of the lower bearing seat is connected to the lower end of the column, and a first nut is screwed on the column. The first nut fixes the lower bearing on the frame. The end of the upper bearing seat is connected to the upper end of the column, and a second nut and a third nut are screwed on the columns on the upper and lower sides of the upper bearing seat respectively.

[0010] The active roller and the driven roller are made of rubber, and a plurality of annular grooves are arranged on the circumferential surface of the active roller.

[0011] The present invention also provides a railway cable laying method, comprising the following steps:

[0012] a. Select a contact network pillar every 250~350m along the railway where the cable needs to be laid, and prepare a corresponding number of the above-mentioned railway cable laying equipment according to the number of selected contact network pillars;

[0013] b. After entering the skylight time, use a rail flatbed car to transport the railway cable laying equipment to each determined contact network pillar, and then fix the railway cable laying equipment on the contact network pillar through a clamp;

[0014] c. Connect the end of the cable to the traction board, and connect the traction board to the tail end of the traction rope, and pass the head end of the traction rope around the driving roller of the first railway cable laying equipment;

[0015] d. Start the cable laying equipment with the traction rope wound around it to pull the cable, and manually pull the head end of the traction rope to move to the next railway cable laying equipment. When the head end of the traction rope reaches the next railway cable laying equipment, the head end of the traction rope is passed around the active roller of the railway cable laying equipment and the railway cable laying equipment is started. Then, the head end of the traction rope continues to be pulled manually to move to the next railway cable laying equipment;

[0016] e. During the forward traction process, when the end of the cable moves to the railway cable laying equipment, all the running railway cable laying equipment are controlled to stop at the same time, the traction rope is separated from the traction board, the traction rope is taken out from the active roller and then the traction rope is reconnected with the traction board, and then the railway cable laying equipment is restarted at the same time to continue to pull the cable forward;

[0017] f. Repeat steps d and e until the cable is fully pulled into place.

[0018] A plurality of ground slides are placed between two adjacent railway cable-laying devices, and the cables are placed on the ground slides.

[0019] The traction rope is always kept in a taut state during the traction process.

[0020] The railway cable laying equipment does not install the driven shaft and the driven roller at the beginning. After the cable passes over the active roller, the driven roller and the driven shaft are installed, and the distance between the driven roller and the active roller is adjusted to clamp the cable between the active roller and the driven roller.

[0021] The railway cable laying equipment of the present invention can be conveniently installed on the contact network pillar next to the railway track. The reduction motor drives the active roller to rotate, and the driven roller is detachably installed on the column. Only the active roller can be installed to act as a capstan. After the driven roller is installed, the active roller and the driven roller can be used together to drive the cable to move forward. The railway cable laying equipment is controlled by a remote control.

[0022] The railway cable laying method of the present invention uses several of the above-mentioned railway cable laying equipment. The railway cable laying equipment first acts as a capstan to pull the cable forward through the traction rope. After the cable passes through, the railway cable laying equipment is used to drive the cable. The front end of the cable is pulled by the traction rope. At the same time, the cable is driven by the railway cable laying equipment at various positions. The greater the distance the cable advances, the more railway cable laying equipment is used to drive the cable. The weight and length of the cable to be dragged are directly proportional to the number of railway cable laying equipment involved in driving the cable, which can meet the demand for traction force when pulling the cable, thereby increasing the traction speed of the cable, enabling the cable to reach the predetermined position within the predetermined time, reducing the labor intensity of the workers, ensuring the rapid completion of the cable laying construction, avoiding the timeout of the cable laying construction within the skylight time, and ensuring the safety of the construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the railway cable laying equipment of the present invention.

[0024] Figure 2 yes Figure 1 Right view of .

[0025] Figure 3 yes Figure 1 Top view of the .

[0026] In the figure: 1, frame; 2, fixing rod; 3, reduction motor; 4, controller; 5, lower bearing seat; 6, upper bearing seat; 7, driving shaft; 8, driving roller; 9, driven shaft; 10, driven roller; 11, first nut; 12, second nut; 13, third nut; 14, column; 2-1, connecting plate; 2-2, protrusion; 2-3, rod-shaped body; 2-4, clamp; 8-1, annular groove. DETAILED DESCRIPTION

[0027] like Figure 1 , Figure 2 as well as Figure 3 As shown, the railway cable laying equipment of the present invention includes a frame 1, on which a reduction motor 3, a cable drum mechanism, a controller 4 and a fixed rod 2 extending to one side are arranged, and a clamp 2-4 is arranged on the fixed rod 2. The cable drum mechanism includes four columns 14 distributed at the four corners of a rectangle, and two columns 14 located on the same short side of the rectangle form a group, and each group of columns 14 is respectively provided with a lower bearing seat 5 and a detachably installed upper bearing seat 6, a driving shaft 7 is arranged on the lower bearing seat 5, a driving roller 8 is arranged on the driving shaft 7, a driven shaft 9 is arranged on the upper bearing seat 6, and a driven roller 9 is arranged on the driven shaft 9. The rotating shaft of the reduction motor 3 is connected to the driving shaft 7 through a coupling, the controller 4 is connected to the power supply and electrically connected to the reduction motor 3, and the controller 4 is wirelessly connected to a remote control.

[0028] The fixing rod 2 includes a rod-shaped body 2-3, a clamp 2-4 is detachably mounted on one side of one end of the rod-shaped body 2-3, a connecting plate 2-1 is provided at the other end of the rod-shaped body 2-3, the connecting plates 2-1 are located on both sides of the rod-shaped body 2-3, and two connecting plates 2-1 are provided on each side. The fixing rod 2 is detachably connected to the frame 1 through the connecting plates 2-1, and the fixing rod 2 and the frame 1 are fixedly connected by bolts passing through the connecting plates 2-1. Usually, the fixing rod 2 can be separated from the frame 1 for easy storage and transportation, and can be quickly fixed and connected on site when in use. After the fixing rod 2 and the frame 1 are fixedly connected, the entire device is fixed to the contact network pillar next to the railway through the clamp 2-4, wherein the clamp 2-4 is generally U-shaped. Two protrusions 2-2 are provided on the side of the fixing rod 2, and the two protrusions 2-2 are located between the two legs of the clamp 2-4. When the clamp 2-4 is fixed on the mounting column 14, the mounting column 14 is located between the two protrusions 2-2, so that the installation of the clamp 2-4 is more firm and reliable.

[0029] The end of the lower bearing seat 5 is connected to the lower end of the column 14. The surface of the column 14 is provided with an external thread. The first nut 11 is screwed on the column 14. The first nut 11 fixes the lower bearing on the frame 1. The end of the upper bearing seat 6 is connected to the upper end of the column 14. The second nut 12 and the third nut 13 are screwed on the columns 14 on the upper and lower sides of the upper bearing seat 6. The height of the upper bearing seat 6 is adjusted by the height of the third nut 13, and then the second nut 12 fixes the upper bearing seat 6. The cable is pressed against the active roller 8 by adjusting the height of the driven roller 9. The active roller 8 and the driven roller 9 are made of rubber, specifically rubber tendon material, which has good wear resistance. A number of annular grooves 8-1 are provided on the circumferential surface of the active roller 8. There are generally three annular grooves 8-1, which can drive three single-core cables to move at the same time.

[0030] The rotation of the motor is controlled by the controller 4, which is connected to the power supply through a line. The controller 4 receives a control signal from a remote controller through a signal receiving device to connect or disconnect the power supply, and transmits electric energy to the motor through the line after the power supply is turned on. Generally, there is no place to plug in the power supply next to the railway, so a generator is needed to provide electric energy for the railway cable laying device.

[0031] The railway cable laying method of the present invention comprises the following steps:

[0032] a. Select a contact network pillar every 250~350m along the railway where the cable needs to be laid, and prepare a corresponding number of the above-mentioned railway cable laying equipment according to the number of selected contact network pillars.

[0033] b. After entering the skylight time, use a rail flatbed car to transport the railway cable laying equipment to each determined contact network pillar, and then fix the railway cable laying equipment on the contact network pillar through clamps 2-4.

[0034] c. Connect the end of the cable to the traction board, and connect the traction board to the tail end of the traction rope, and pass the head end of the traction rope around the active roller 8 of the first railway cable laying equipment.

[0035] d. Start the cable-laying equipment with the traction rope wound around it to pull the cable, and manually pull the head end of the traction rope to the next railway cable-laying equipment. When the head end of the traction rope reaches the next railway cable-laying equipment, pass the head end of the traction rope around the active roller 8 of the railway cable-laying equipment and start the railway cable-laying equipment. Then continue to manually pull the head end of the traction rope to the next railway cable-laying equipment.

[0036] e. During the forward traction process, when the end of the cable moves to the railway cable-laying equipment, all the running railway cable-laying equipment are controlled to stop at the same time, the traction rope is separated from the traction walkway, the traction rope is taken out from the active roller 8 and then the traction rope is reconnected to the traction walkway, and then the railway cable-laying equipment is restarted at the same time to continue pulling the cable forward.

[0037] f. Repeat steps d and e until the cable is fully pulled into place.

[0038] Before construction, the position of each contact network pillar shall be clearly defined according to the construction plan. After entering the network, the railway cable laying equipment shall be installed on the designated installation column 14 first, and the generator shall be used for power generation test to check whether the steering of the active roller 8 is correct. The steering of the motor can be completed by changing the position of the wiring. Among them, in order to avoid contact between the cable and the ground, several ground pulleys are placed between two adjacent railway cable laying equipment. After the traction rope arrives, the traction rope shall be passed around the drum for at least one week, and it shall be noted that the traction rope shall be kept in a taut state at all times during the traction process. The traction rope shall never be loosened to prevent the traction rope from slipping in the drum. The railway cable laying equipment does not install the driven shaft 9 and the driven roller 9 at the beginning. After the cable passes over the active roller 8, the driven roller 9 and the driven shaft 9 shall be installed, and the distance between the driven roller 9 and the active roller 8 shall be adjusted to clamp the cable between the active roller 8 and the driven roller 9. The clamping force shall be moderate. The operator of each railway cable-laying equipment keeps the intercom turned on and ensures that the remote control is always in hand. When there is an abnormality in the railway cable-laying equipment, the intercom is used to immediately notify the shutdown. After receiving the shutdown or startup command, the operator of each railway cable-laying equipment quickly controls the shutdown or startup through the remote control, so as to achieve the simultaneous shutdown or startup of all the railway cable-laying equipment in operation.

[0039] In order to increase the construction speed, when transporting the railway cable-laying equipment, first transport one railway cable-laying equipment to the first contact network pillar, and immediately start preparing for traction at the first contact network pillar. At the same time, transport several railway cable-laying equipment to the second contact network pillar, and transport the remaining railway cable-laying equipment to the subsequent contact network pillars, and then disperse the railway cable-laying equipment to each contact network pillar. When the first railway cable-laying equipment is ready and starts to be towed, the second railway cable-laying equipment has been installed and can be towed, and the subsequent railway cable-laying equipment is being arranged and installed. In this way, the installation preparation of the railway cable-laying equipment and the traction of the cable are carried out at the same time, and the installation of the railway cable-laying equipment is ahead of the traction of the cable, which can not only shorten the construction time, but also ensure that the traction of the cable is carried out continuously without interruption.

[0040] The railway cable laying equipment of the present invention can be conveniently installed on the contact network pillar next to the railway track. The reduction motor 3 drives the active roller 8 to rotate, and the driven roller 9 is detachably installed on the column 14. Only the active roller 8 is installed and it can be used as a capstan. After the driven roller 9 is installed, the active roller 8 and the driven roller 9 can be used together to drive the cable forward. The railway cable laying equipment is controlled by a remote control.

[0041] The railway cable laying method of the present invention uses several of the above-mentioned railway cable laying equipment. The railway cable laying equipment first acts as a capstan, and pulls the cable forward through the traction rope. After the cable passes, the railway cable laying equipment is used to drive the cable. The front end of the cable is pulled by the traction rope, and the cable is driven by the railway cable laying equipment at various positions. The greater the distance the cable advances, the more railway cable laying equipment is used to drive the cable. The weight and length of the cable to be dragged are proportional to the number of railway cable laying equipment involved in driving the cable, which can meet the demand for traction when pulling the cable, thereby increasing the traction speed of the cable, so that the cable can reach the predetermined position within the predetermined time, and reducing the labor intensity of the workers. The cable laying construction using the method of the present invention can control the effective construction time to 2~2.5h, plus 0.5h for site preparation, and 1h for equipment recovery and site cleaning after the cable is laid, which can ensure completion within the skylight time (4h). The overtime of the cable laying construction during the skylight time is avoided, ensuring the safety of the construction.

Claims

1. A railway cable laying equipment, characterized in that: It comprises a frame, on which a reduction motor, a cable drum mechanism, a controller and a fixing rod extending to one side are arranged, on which a clamp is arranged, the cable drum mechanism comprises four columns distributed at the four corners of a rectangle, two columns located on the same short side of the rectangle form a group, each group of the columns is respectively provided with a lower bearing seat and an upper bearing seat is detachably mounted, a driving shaft is arranged on the lower bearing seat, a driving roller is arranged on the driving shaft, a driven shaft is arranged on the upper bearing seat, and a driven roller is arranged on the driven shaft, the rotating shaft of the reduction motor is connected to the driving shaft, the controller is connected to a power supply and electrically connected to the reduction motor, and the controller is wirelessly connected to a remote controller; The fixing rod comprises a rod-shaped body, the clamp is detachably mounted on one side of one end of the rod-shaped body, a connecting plate is arranged at the other end of the rod-shaped body, and the fixing rod is detachably connected to the frame via the connecting plate; The active roller and the driven roller are made of rubber, and a plurality of annular grooves are arranged on the circumferential surface of the active roller.

2. The railway cable laying equipment according to claim 1, characterized in that: Two protrusions are arranged on the side of the fixing rod, and the two protrusions are located between the two legs of the clamp.

3. The railway cable laying equipment according to claim 1, characterized in that: The end of the lower bearing seat is connected to the lower end of the column, and a first nut is screwed on the column. The first nut fixes the lower bearing on the frame. The end of the upper bearing seat is connected to the upper end of the column, and a second nut and a third nut are screwed on the columns on the upper and lower sides of the upper bearing seat respectively.

4. A railway cable laying method, characterized in that: The following steps are involved: a. Select a contact network pillar every 250~350m along the railway where the cable needs to be laid, and prepare a corresponding number of railway cable laying equipment according to the number of contact network pillars selected according to claim 1; b. After entering the skylight time, use a rail flatbed car to transport the railway cable laying equipment to each determined contact network pillar, and then fix the railway cable laying equipment on the contact network pillar through a clamp; c. Connect the end of the cable to the traction board, and connect the traction board to the tail end of the traction rope, and pass the head end of the traction rope around the driving roller of the first railway cable laying equipment; d. Start the cable laying equipment with the traction rope wound around it to pull the cable, and manually pull the head end of the traction rope to move to the next railway cable laying equipment. When the head end of the traction rope reaches the next railway cable laying equipment, the head end of the traction rope is passed around the active roller of the railway cable laying equipment and the railway cable laying equipment is started. Then, the head end of the traction rope continues to be pulled manually to move to the next railway cable laying equipment; e. During the forward traction process, when the end of the cable moves to the railway cable laying equipment, all the running railway cable laying equipment are controlled to stop at the same time, the traction rope is separated from the traction board, the traction rope is taken out from the active roller and then the traction rope is reconnected with the traction board, and then the railway cable laying equipment is restarted at the same time to continue to pull the cable forward; f. Repeat steps d and e until the cable is fully pulled into place.

5. The railway cable laying method according to claim 4, characterized in that: A plurality of ground slides are placed between two adjacent railway cable-laying devices, and the cables are placed on the ground slides.

6. The railway cable laying method according to claim 4, characterized in that: The traction rope is always kept in a taut state during the traction process.

7. The railway cable laying method according to claim 4, characterized in that: The railway cable laying equipment does not install the driven shaft and the driven roller at the beginning. After the cable passes over the active roller, the driven roller and the driven shaft are installed, and the distance between the driven roller and the active roller is adjusted to clamp the cable between the active roller and the driven roller.

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