Hydraulic breaking cutter for railway box cable protection pipe

Abstract

The utility model relates to a hydraulic breaking cutter for a railway box cable protection pipe, which solves the problems of limited operation space, large cable damage risk, low safety coefficient and low operation efficiency during cable replacement, and comprises a power component, a shell and an end cover, the power component is a hydraulic control device, is arranged in the shell and is fixedly connected with the shell, and the end cover is arranged in the shell and is fixedly connected with the shell. The end cover is fixedly connected with the shell, the breaking and cutting component and the hook body are fixed, the breaking and cutting component is arranged in the shell and fixedly connected with the shell, a cutter head of the breaking and cutting component is fixedly connected with the cutter rest, and an overflowing hole of a hydraulic cylinder of the power component is connected with an ejector rod of the breaking and cutting component through the oil conveying pipeline. The safety of the existing cable can be guaranteed, the operation requirement can be completely met, a large amount of time is saved in operation, the purpose of improving the operation efficiency can be achieved, and the device has the advantages of being high in universality, time-saving, labor-saving, high in efficiency, convenient to maintain and long in service life, and adapting to various spaces.

Description

TECHNICAL FIELD

[0001] The utility model relates to railway signal equipment construction maintenance tool, concretely relates to a hydraulic railway box cable protection pipe cutting knife. BACKGROUND

[0002] The railway equipment maintenance status adopts the "window repair" mode, that is, stopping the train operation, completing the equipment modification and maintenance within the specified time, the purpose is to ensure the personal safety risk and reduce the artificial equipment failure risk, the replacement cable or the new and old cable transition work risk is higher, the preparatory work is complicated, the protection pipe is removed before replacement, the protection pipe is cast iron material and has insulation glue in the pipe, the cable is relatively fragile, and the cable is easily damaged during operation, and the damaged cable is a hidden danger of cable failure in the future.

[0003] The existing cable replacement method is divided into three kinds.

[0004] 1. The fixed screw is disassembled by manpower using a wrench. Problems: the cable for train operation must be repaired during the "window repair", that is, the train stops after the operation, the disassembly is difficult due to rust of the screw, small operation space and other factors, the disassembly time is usually ten minutes or even longer, and the operation efficiency is seriously affected. 2. The cutting is carried out using an electric angle grinder. Problems: the fixed screw of the cable protection pipe has only 200mm operating space from the ground, the operator can only operate with one hand, there is no stability, the operating angle is too small during the cutting process, and the flying debris is easy to hurt people, and this operation method has been prohibited by the security department of the national railway group. 3. The hard breaking is carried out using hammering tools. Problems: the cast iron protection pipe has the characteristics of hard and not bending, the cast iron protection pipe is broken during hammering, the cable is sunk without fixation at once, the cable is cut off by the broken point transverse surface extrusion when hammering again, the operation efficiency is fast in this method, but the cable breaking risk is very high, and the common problems are summarized as follows: (1) the existing tools cannot achieve the purpose due to the limitation of operating space, (2) the operation is strong, the operation requirement is high, and the cable breaking risk is too large, (3) the safety factor is low, and the personal injury is caused, and (4) the operation efficiency is low, and there is no fast method for the operation link in the limited time. UTILITY MODEL CONTENT

[0005] The utility model solves the technical problems that the existing technology is improved, and a hydraulic railway box cable protection pipe cutting knife is provided.

[0006] The utility model solves technical matter's scheme: it includes power component, shell and end cover, the power component is hydraulic control device, power component is placed in the shell and is fixedly connected, the end cover is fixedly connected with the shell, its characterized in being: still including broken cutting part and hook body fixed, the broken cutting part is placed in the shell and is fixedly connected, the cutter head of broken cutting part is fixedly connected with the tool rest, the overflow hole of hydraulic cylinder of power component is connected with the top rod of broken cutting part through the oil delivery pipeline.

[0007] The power component includes hydraulic cylinder, broken cutting tool rest, broken cutting knife, the hydraulic cylinder is placed in the shell, the oil cylinder piston rod is linearly extended in the shell, the cylinder body of hydraulic cylinder is fixedly connected with broken cutting body, the piston rod in the shell lifts the broken cutting knife rod, until the cutter head is extended, the cutter head is sleeved on the piston rod and is slidably connected, the upper end is fixedly connected with the second shell.

[0008] The broken cutting knife is 30-degree triangular cross-section body, the cross section is conical body, the middle of broken cutting tool rest is provided with large through hole, is used for the fixation and extension movement of broken cutting cutter head, the hook type opening of one side is used for entering cable protection pipe, the arc surface of hook head is used for holding cable protection pipe, makes it stable.

[0009] The power component includes oil storage bag, fixed body, oil pump, first check valve, second check valve, stop valve, handle and stop valve knob, the oil storage bag is placed in the shell, the oil injection hole of oil storage bag is extended out of the shell, the oil injection hole is blocked by the plug, the fixed body is placed on the side of oil tank, the oil pump is placed in the fixed body, the plunger of oil pump is extended out of the fixed body, the oil inlet of oil pump is communicated with the oil tank through the oil inlet channel of fixed body, the oil outlet of oil pump is connected with the cutter head of fixed body, the first check valve is placed in the oil inlet channel of fixed body, the second check valve is placed in the oil outlet channel of fixed body, the stop valve is placed in the oil return channel of fixed body, and the operating rod is extended out of the shell through the fixed body, the handle is placed outside the shell, above the plunger of oil pump, the front end of handle is hinged with the first shell, the rear end is rubber handle, and the middle is hinged with the plunger, the knob is placed outside the first shell, and is fixedly connected with the operating rod of stop valve.

[0010] The fixed body is cylindrical, the side of fixed body close to oil tank is provided with cavity for accommodating oil pump, the center of fixed body is provided with main channel on the side of cavity, the oil inlet channel and oil outlet channel are respectively arranged on the bottom of cavity, the oil inlet channel is communicated with oil tank, the oil outlet channel is communicated with main channel, the oil return channel is arranged on the side of cavity, one end of oil return channel is communicated with oil tank, and the other end is communicated with main channel. The oil pump is plunger pump.

[0011] The utility model discloses a hydraulic railway box cable protection pipe cutting knife, which is characterized by simple operation, convenience, portability, safety of using cable, various cable protection pipes that need to be cut, operation time saving, work efficiency improvement, universality, time and labor saving, high efficiency, convenient maintenance, long service life and the like.

[0012] The utility model discloses a hydraulic railway box cable protection pipe cutting knife, which is characterized by simple operation, convenience, portability, safety of using cable, various cable protection pipes that need to be cut, operation time saving, work efficiency improvement, universality, time and labor saving, high efficiency, convenient maintenance, long service life and the like. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is power part section view schematic drawing in the utility model;

[0014] Figure 2 It is cutting knife part section view schematic drawing in the utility model;

[0015] Figure 3 It is power part left view section view schematic drawing in the utility model;

[0016] Figure 4 It is power part horizontal plan view schematic drawing in the utility model;

[0017] Figure 5 It is hydraulic system schematic drawing of power part in the utility model;

[0018] Figure 6 It is power part component schematic drawing in the utility model;

[0019] Figure 7 It is cutting knife and tool rest schematic drawing in the utility model;

[0020] Figure 8 It is oil circuit transmission principle diagram of hydraulic railway box cable protection pipe cutting knife.

[0021] In the figure: 1 rubber handle, 2 oil pump force arm, 3 oil cylinder support, 4 oil pump plunger, 5 oil pump, 6 oil outlet pipeline, 7 oil inlet pipeline, 8 oil storage bag, 9 pressure piston, 10 piston cover, 11 cutting knife holder, 12 cutting knife, 13 first one-way valve, 14 second one-way valve, 15 shell, 16 stop valve, 17 cutting knife rod. DETAILED DESCRIPTION

[0022] The utility model is further explained in connection with the drawings and examples.

[0023] Referring to Figures 1-8 , example 1, a hydraulic railway box cable protection pipe cutting knife, it includes power component 2-1, shell 15 and piston cover 10, the power component 2-1 is hydraulic control device, power component pressure piston 9 is placed in the shell 11 and is fixedly connected, and is fixedly connected with one end of oil pump 5 at shell 15 through thread, the rubber handle 1 is rubber-coated handle, and power component piston outer cover 10 is communicated with cutting knife component 11 through thread.

[0024] The cutting knife component includes cutting knife holder 12, cutting knife 11, and large through hole is arranged in the middle of cutting knife rod 17 for cutting knife 12 movement.

[0025] The power component 1 rubber handle, 2 oil pump force arm, 3 oil cylinder support, 4 oil pump plunger, 5 oil pump, 6 oil outlet pipeline, 7 oil inlet pipeline, 8 oil storage bag, 9 pressure piston, 10 piston cover, 13 first one-way valve, 14 second one-way valve, 15 shell, 16 stop valve. The oil storage bag 8 is placed in the first shell 15, and the oil injection hole of the oil storage bag 8 is hidden in the first shell 15, the oil injection hole is blocked by the plug, the fixed body 15 is placed on the side of the oil storage bag 8, the oil pump 5 is a plunger pump, the plunger 4 of the oil pump 5 extends through the shell 15, the oil inlet of the oil pump 5 is communicated with the oil tank 8 through the oil inlet channel 7 of the shell 15, the oil outlet 6 of the oil pump 5 is communicated with the oil outlet channel 6 of the shell 15, the first one-way valve 13 is placed in the oil inlet channel 7 of the oil pump 5, the second one-way valve 14 is placed in the oil outlet channel 6 of the oil pump 5, the stop valve 16 is placed in the oil return channel 7 of the shell 15, and the operating rod 1 extends out of the shell through the oil pump body 5, the rubber handle 1 is placed outside the oil pump body 15, above the oil pump plunger 4 of the oil pump 15, the front end of the rubber handle 1 is hinged with the oil pump body 5 through the oil cylinder support 3, the rear end is operating handle, and the middle is hinged with the oil pump plunger 4, the stop valve knob 16 is placed outside the oil pump body 5, and the stop valve knob 16 is connected with the oil pump body.

[0026] The oil pump body 5 is a cylinder, and a cavity for containing oil for the oil pump is arranged on one side of the oil pump body 5 close to the oil storage bag 8. A main passage is arranged in the center of the oil pump body 5 on the side of the cavity. An oil inlet passage 7 and an oil outlet passage 6 are arranged on the bottom of the cavity respectively. The oil inlet passage 7 is communicated with the pressure piston 10, and the oil outlet passage 6 is communicated with the oil storage bag 8.

[0027] The embodiment is manufactured by using the prior art, and 1 is a rubber handle, 2 is an oil pump force arm, 3 is an oil cylinder support, 4 is an oil pump plunger, 5 is an oil pump, 6 is an oil outlet pipeline, 7 is an oil inlet pipeline, 8 is an oil storage bag, 9 is a pressure piston, 13 is a first one-way valve, 14 is a second one-way valve, 15 is a shell, and 16 is a stop valve. They are all commercially available products of the prior art.

[0028] The working process of the embodiment is as follows: the stop valve knob is rotated to close the stop valve 16 of the oil return passage, the cable protection pipe is clamped into the tool holder along the opening of the tool holder 11, the rubber handle 1 is swung, the plunger 4 of the oil pump is reciprocated by the handle to inject oil into the piston chamber 9, the hydraulic oil drives the piston 9 to extend until the breaking and cutting knife 12 is pushed to the required position, the tool holder holds the cable protection pipe, the breaking and cutting knife cross section contacts the protection pipe wall point and surface pressure, until the cast iron protection pipe is cut into pieces along the knife mark, and the cable is taken out. After completion, the oil return valve is opened, and the knife blade automatically retracts.

[0029] The embodiment is not limited to the specific embodiment, and simple copying and improvement without creative labor are all within the protection scope of the claims of the embodiment for those skilled in the art.

Claims

1. A hydraulic railway cable conduit cutter, comprising a power unit, a housing, and an end cap, wherein the power unit is a hydraulic control device, the power unit is housed within and fixedly connected to the housing, and the end cap is fixedly connected to the housing, characterized in that: It also includes a cutting component and a hook body fixing. The cutting component is placed inside the housing and fixedly connected. The cutting head of the cutting component is fixedly connected to the blade holder. The flow hole of the hydraulic cylinder of the power component is connected to the top rod of the cutting component through the oil supply line.

2. The hydraulic railway box cable protection pipe cutter as described in claim 1, characterized in that: The power component includes a hydraulic cylinder, a cutting blade holder, and a cutting blade. The hydraulic cylinder is placed inside the housing, and the piston rod of the hydraulic cylinder extends straight out of the housing. The cylinder body of the hydraulic cylinder is fixedly connected to the cutting body. The piston rod inside the housing lifts the cutting blade rod until the blade head extends out. The blade head is sleeved on the piston rod and slidably connected. Its upper end is fixedly connected to the second housing.

3. The hydraulic railway box cable protection pipe cutter as described in claim 2, characterized in that: The cutting blade is a 30-degree triangular cross-section with a conical cross-section. A large through hole is provided in the middle of the cutting blade holder for fixing and extending the cutting blade head. A hook-shaped opening on one side allows it to enter the cable protection pipe. The arc surface of the hook is used to grip the cable protection pipe and stabilize it.

4. The hydraulic railway box cable protection pipe cutter as described in claim 1, characterized in that: The power unit includes an oil tank, a plug, a fixed body, an oil pump, a first one-way valve, a second one-way valve, a shut-off valve, a handle, and a knob. The oil tank is placed inside the housing, with its oil filling hole extending outside the housing and sealed by the plug. The fixed body is placed on the side of the oil tank. The oil pump is placed inside the fixed body, with its plunger extending outward through the fixed body. The oil pump's inlet is connected to the oil tank through the inlet channel of the fixed body, and its outlet is connected to the cutter head of the fixed body. The first one-way valve is placed inside the inlet channel of the fixed body, and the second one-way valve is placed inside the outlet channel of the fixed body. The shut-off valve is placed inside the return channel of the fixed body, and its control lever extends outward through the fixed body and outside the housing. The handle is placed outside the housing, above the plunger of the oil pump. The front end of the handle is hinged to the first housing, the rear end is a control handle, and the middle is hinged to the plunger. The knob is placed outside the first housing, at the control lever of the shut-off valve, and is fixedly connected.

5. The hydraulic railway box cable protection pipe cutter as described in claim 4, characterized in that: The fixed body is a cylinder. A cavity for accommodating the oil pump is provided on the side of the fixed body near the oil tank. A main channel is provided on the side of the cavity and at the center of the fixed body. An oil inlet channel and an oil outlet channel are respectively provided at the bottom of the cavity. The oil inlet channel is connected to the oil tank and the oil outlet channel is connected to the main channel. A return oil channel is provided on the side of the cavity. One end of the return oil channel is connected to the oil tank and the other end is connected to the main channel.

6. The hydraulic railway box cable protection pipe cutter as described in claim 5, characterized in that: The oil pump is a plunger pump.

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