Overhead line equipment

Abstract

To provide an overhead line device which can be mounted on a relatively small vehicle and can be used for replacing or newly laying an overhead line without using an axle winch. [Solution] A stringing device used for removing or installing an overhead line includes a winch that includes a rotatable drive shaft that, when rotated, can wind the overhead line onto an electric wire drum that is installed so that the drive shaft passes through it at a central position, a power source unit that supplies driving force to the drive shaft, and a guide member that suppresses positional fluctuations of the overhead line during winding, and the winch, power source unit, and guide member are all sized to be loaded onto the bed of a vehicle, such as a small truck or a 2-ton truck that meets the light vehicle standards.

Description

[Technical field]

[0001] The present invention relates to a catenary device used for removing or installing overhead lines. [Background technology]

[0002] When replacing existing overhead lines, it is common to use an axle winch or a dedicated overhead line vehicle.

[0003] An axle winch is a device that is typically attached to the rear wheel of a 2-ton work vehicle, and is used to wind up an overhead wire by rotational drive powered by the vehicle's engine (see, for example, Patent Document 1).

[0004] However, there is a risk that a parked work vehicle may move when overloaded, so the worker must be highly skilled. For this reason, there is a desire to perform overhead line re-conductoring work without using an axle winch. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 2975592 Summary of the Invention [Problem to be solved by the invention]

[0006] As a method for replacing or installing overhead lines without using an axle winch, overhead line vehicles equipped with special equipment are often used. An overhead line vehicle is a vehicle that can wind up two wires at the same time, and since it needs to be equipped with relatively large equipment, it is typically a 3-ton work vehicle.

[0007] However, because overhead line vehicles are large, they cannot be used in locations where roads are narrow.

[0008] In view of the above problems, the present invention aims to provide an overhead line device that can be mounted on a relatively small vehicle and can be used for replacing or installing overhead lines without using an axle winch. [Means for solving the problem]

[0009] A line device used for removing or installing overhead lines, a winch including a rotatable drive shaft, the drive shaft being rotationally driven to wind the overhead wire onto an electric wire drum that is installed so that the drive shaft passes through the drum at a central position; a power source unit for supplying a driving force to the drive shaft; a guide member for restricting a positional fluctuation of the overhead wire during winding, This is an overhead line device characterized in that the winch, the power source unit, and the guide member are all sized to be able to be loaded onto the bed of a vehicle, such as a small truck that meets the light vehicle standards or a 2-ton truck.

[0010] The above overhead line device can be realized in a size that can be loaded onto the bed of a relatively small light truck or a 2-ton truck. This makes it possible to stop the vehicle on narrow roads where conventional overhead line vehicles could not enter, and perform work to replace or lay new overhead lines.

[0011] In this overhead line device, the winch uses the driving force supplied from the power source unit to wind the overhead wire around the electric wire drum, which is installed so that the drive shaft passes through it. In addition, since a guide member is provided, the position of the overhead wire does not change significantly during winding by the winch, and winding can be performed smoothly.

[0012] The power source unit is typically a hydraulic engine unit.

[0013] The overhead line device is mounted on the platform and includes an operation panel that receives operations by an operator, The operation panel may have a guide operator for displacing the position of the guide member in the left-right direction by utilizing the power supplied from the power source unit.

[0014] According to the above configuration, by adjusting the position of the guide member to the left or right during winding of the overhead wire, the winding position when the overhead wire is wound onto the electric wire drum can be adjusted, thereby preventing the overhead wire from being continuously wound at a specific position on the electric wire drum, resulting in an unbalanced winding state.

[0015] The control panel is preferably installed so that an operator on the platform can operate it while facing the rear of the vehicle, thereby enabling the operator to operate the control panel while visually checking the winding status of the overhead wire.

[0016] A lift is provided at a rear position of the light vehicle, the lift being fixed and installed at two locations spaced apart in a vehicle width direction of the light vehicle, The drive shaft is configured so that both ends can be attached to the lift, The lift is configured to be able to ascend and descend using the power of the power source unit, The operation panel may have a lift operator for issuing an instruction to raise and lower the lift.

[0017] With this, when installing the electric wire drum for winding or when removing the electric wire drum after winding is completed, the height of the lift can be adjusted by operating the operation panel.

[0018] The winch is configured to be capable of paying out the electric wire wound on the electric wire drum, The operation panel may have a winch operator for issuing an instruction to switch between winding and unwinding.

[0019] This also makes it possible to use the overhead line device to pay out electric wires. Therefore, for example, in a case where two vehicles equipped with the overhead line device can be arranged at a site, one vehicle can be used as a vehicle for winding up an existing electric wire, and the other vehicle can be used as a vehicle for paying out a new electric wire. Effect of the Invention

[0020] According to the present invention, an overhead line device is realized that can be mounted on a relatively small vehicle and can be used for replacing or installing overhead lines without using an axle winch. [Brief description of the drawings]

[0021] [Figure 1] FIG. 1 is a schematic perspective view of a vehicle equipped with an overhead line device. [Diagram 2] FIG. 2 is a schematic side view of the vehicle in the state shown in FIG. 1. [Diagram 3] FIG. 2 is a schematic top view of the vehicle in the state shown in FIG. 1. [Figure 4] FIG. 2 is a partially enlarged view of the overhead line device shown in FIG. [Diagram 5] 2 is a diagram showing a schematic diagram of a state in which an overhead wire is wound using the overhead wire device mounted on the vehicle shown in FIG. 1. [Figure 6] 1 is a schematic drawing of an operation panel mounted on an overhead line device. [Figure 7] 11 is a diagram illustrating a state in which a guide member is displaced to the left and right. [Figure 8] 2 is a diagram showing a schematic diagram of a state in which an overhead wire is replaced using the overhead wire device mounted on the vehicle shown in FIG. 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] An embodiment of an overhead line device according to the present invention will be described below with reference to Fig. 1 to Fig. 8. However, the following drawings are all schematic illustrations, and the dimensional ratios and the number of elements in the drawings do not necessarily match the actual dimensional ratios and the number of elements.

[0023] Fig. 1 is a schematic perspective view of a vehicle equipped with an overhead line device according to the present embodiment. As shown in Fig. 1, an overhead line device 2 is mounted on the bed of a vehicle 1. The vehicle 1 is a small truck or a 2-ton truck that meets the standards for a light vehicle.

[0024] Fig. 2 is a schematic side view of the vehicle 1 shown in Fig. 1. Fig. 3 is a schematic top view of the vehicle 1 shown in Fig. 1. Fig. 4 is a partially enlarged view of the overhead line device 2. Fig. 5 is a schematic diagram showing how the overhead wire is wound using the overhead line device 2 mounted on the vehicle 1 shown in Fig. 1.

[0025] The overhead line device 2 has a winch 4 and a hydraulic engine unit 3 that provides driving force to the winch 4. The hydraulic engine unit 3 is one aspect of a power source unit that provides driving force to the winch 4.

[0026] The winch 4 is a mechanism that receives driving force from the hydraulic engine unit 3 and rotates the drive shaft 19 shown in Fig. 1 to wind up the overhead wire 22 onto the electric cable drum 21 (see Fig. 5). The electric cable drum 21 has a through hole formed in the center, and the drive shaft 19 is installed so as to pass through this through hole.

[0027] The overhead line device 2 includes an electric wire guide 6 for restricting positional fluctuation of the overhead wire 22. The electric wire guide 6 typically has a frame-shaped member as shown in Fig. 1, Fig. 4, and Fig. 5, and the overhead wire 22 being wound is guided to the electric wire drum 21 while being inserted inside the frame-shaped member. As a result, the overhead wire 22 is restricted to moving within the area inside the frame-shaped member of the electric wire guide 6 even during the winding operation, so that the winding operation of the overhead wire 22 can be performed smoothly.

[0028] A lift 7 is fixedly installed at two locations spaced apart in the vehicle width direction of the vehicle 1 at the rear of the vehicle 1. The lift 7 is capable of adjusting the height of a drive shaft 19 with both ends of the drive shaft 19 attached thereto. Thus, with the drive shaft 19 inserted through the electric cable drum 21, the drive shaft 19 is attached to the lift 7 and the height position of the lift 7 is adjusted, thereby adjusting the height of the electric cable drum 21. The lift 7 can be raised and lowered by receiving a driving force from, for example, the hydraulic engine unit 3.

[0029] For example, when recovering an existing overhead wire 22, the electric wire drum 21 on which the overhead wire 22 is to be wound is placed on the bed of the vehicle 1. More specifically, when the vehicle 1 is a truck, the electric wire drum 21 is raised to the height of the bed using a gate 9 that is normally present, and then the drive shaft 19 is inserted into the through hole of the electric wire drum 21 and set on the lift 7. The lift 7 is then operated to raise the height position.

[0030] As described above, the vehicle 1 is a small truck or a 2-ton truck that meets the standards for a light vehicle and is relatively small in size. For this reason, a single electric wire drum 21 is planned to be placed on the bed of the vehicle 1, and the overhead wire 22 is wound up one by one by using the overhead wire device 2 of this embodiment.

[0031] As shown in Fig. 5, the overhead line device 2 is equipped with an operation panel 5 that can be operated by an operator 10. Fig. 6 is a schematic perspective view of the operation panel 5 as viewed from the front side (the side where the operator 10 stands). The operation panel 5 shown in Fig. 6 has a wire guide operation lever 51, a winch operation lever 52, a lift operation lever 53, and a pressure gauge 54. The pressure gauge 54 is provided to monitor the hydraulic pressure of the hydraulic engine unit 3.

[0032] The lift operation lever 53 is a lever that can be switched between a forward direction and a backward direction as seen by the worker 10. As an example, when the worker 10 tilts the lift operation lever 53 forward, the height position of the lift 7 rises. The lift operation lever 53 is one aspect of a lift operator.

[0033] One end of a long string-like body is connected to the tip of the overhead wire 22 to be wound, and the other end is extended to the electric wire drum 21. Then, by driving the winch 4, the overhead wire 22 is sequentially wound onto the electric wire drum 21 along with the connected string-like body.

[0034] When the overhead wire 22 is wound around the electric wire drum 21, if the intended winding area in the electric wire drum 21 is fixed, there is a possibility that the overhead wire 22 will be wound around the electric wire drum 21 in a horizontally distorted state. Therefore, as described above, the operation panel 5 has the electric wire guide operation lever 51. In the example shown in Fig. 6, the electric wire guide operation lever 51 can be tilted in the left and right directions, and the position of the electric wire guide 6 is displaced in the left and right directions in response to the operation of the electric wire guide operation lever 51.

[0035] Specifically, when the electric wire guide operation lever 51 is tilted leftward, the electric wire guide 6 moves leftward as seen by the worker 10 (rightward on the paper), as shown in FIG. 7(a). Conversely, when the electric wire guide operation lever 51 is tilted rightward, the electric wire guide 6 moves rightward as seen by the worker 10 (leftward on the paper), as shown in FIG. 7(b). The electric wire guide 6 moves left and right at a preset speed. The worker 10 can wind the overhead wire 22 evenly over the entire electric wire drum 21 by operating the electric wire guide operation lever 51 to move the electric wire guide 6 while visually checking the winding state of the overhead wire 22 on the electric wire drum 21. The electric wire guide operation lever 51 is one aspect of a guide operator.

[0036] 8 is a diagram showing a schematic diagram of a state in which an overhead wire 22 is replaced using the overhead wire device 2. A new electric wire 32 is wound around a wire reel 31 in advance. The new electric wire 32 is extended and its tip is connected to the existing overhead wire 22, and then the overhead wire device 2 is used to wind up the existing overhead wire 22. As a result, the existing overhead wire 22 is removed, and the new electric wire 32 is strung between the utility poles 33.

[0037] The overhead line device 2 may be configured to be capable of not only winding up the existing overhead wire 22, but also unwinding the newly installed electric wire 32 wound around the electric wire drum 21. In this case, as shown in FIG. 6, a winch operation lever 52 for switching between winding and unwinding may be disposed on the operation panel 5. For example, in the embodiment shown in FIG. 6, winding is performed by pointing the winch operation lever 52 downward, and unwinding is performed by pointing the winch operation lever 52 upward. The rotational drive direction of the winch 4 is reversed depending on the orientation of the winch operation lever 52.

[0038] When there is space for two vehicles 1 equipped with the overhead line device 2 to park at the site where the overhead wire 22 is to be replaced, the overhead line device 2 mounted on one vehicle 1 may be used to wind up the existing overhead wire 22, and the overhead line device 2 mounted on the other vehicle 1 may be used to pay out the new electric wire 32. In this case, the overhead line device 2 may be used instead of the wire reel 31 in FIG. 8.

[0039] The winch 4 may be provided with an overload adjustment valve so as to prevent excessive tension from being applied to the overhead wire 22 during winding. This valve sets the hydraulic pressure of the hydraulic engine unit 3 so that it does not exceed a threshold value, thereby restricting an excessive increase in the driving force of the winch 4, and thereby suppressing an excessive increase in the tension of the overhead wire 22.

[0040] The control panel 5 shown in Fig. 6 is merely an example. In the above example, the guide operator is a lever-shaped electric wire guide operation lever 51, but it may be a button-shaped one. The lift operation lever 53 as a lift operator and the winch operation lever 52 as a winch operator may also be button-shaped.

[0041] The present invention is not limited to the above-mentioned embodiment, and includes various modifications. For example, the above-mentioned embodiment has been described in detail for a better understanding of the present invention, and is not necessarily limited to the one having all the configurations described. The scope of the present invention is indicated by the scope of the utility model registration claims, and it is intended to include all modifications within the meaning and scope equivalent to the scope of the utility model registration claims. [Explanation of symbols]

[0042] 1: Vehicle 2: Overhead line equipment 3: Hydraulic engine unit 4: Winch 5: Control panel 6: Wire guide 7: Lift 9: Gate 10: Worker 19: Drive shaft 21: Electric cable drum 22:Electric wire 31: Wire reeling stand 32: Newly constructed electric lines 33: Electric pole 51: Wire guide operating lever 52: Winch operation lever 53: Lift operation lever

Claims

1. A line device used for removing or installing overhead lines, a winch including a rotatable drive shaft, the drive shaft being rotationally driven to wind the overhead wire onto an electric wire drum that is installed so that the drive shaft passes through the drum at a central position; a power source unit for supplying a driving force to the drive shaft; a guide member for restricting a positional fluctuation of the overhead wire during winding, The overhead line device is characterized in that the winch, the power source unit, and the guide member are all sized to be able to be loaded onto the bed of a vehicle, such as a small truck that meets the light vehicle standards or a 2-ton truck.

2. a control panel mounted on a loading platform of the vehicle and configured to receive operations from an operator; 2. The overhead line device according to claim 1, wherein the operation panel has a guide operator for displacing a position of the guide member in the left-right direction by utilizing the power supplied from the power source unit.

3. A lift is provided at a rear position of the vehicle, the lift being fixed at two positions spaced apart in a vehicle width direction of the vehicle, The drive shaft is configured so that both ends can be attached to the lift, The lift is configured to be able to ascend and descend using the power of the power source unit, 3. The overhead line device according to claim 2, wherein the operation panel has a lift operator for issuing an instruction to raise and lower the lift.

4. The winch is configured to be capable of paying out the electric wire wound on the electric wire drum, 3. The overhead line device according to claim 2, wherein the operation panel has a winch operator for issuing an instruction to switch between winding and unwinding.

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