Contact net hydraulic damping pay-off frame

1 summary of contact ribs; 1 Ni release frame from product structure. Design 1; rational. Seven technical indicators should be advanced and elaborated. The loading boundary can meet the needs of the constant tension wire drawing in the range of 05 milk in the construction of the Noon Net.
1 Foreword With the rapid development of China's national economy, China's electrified railway construction has ushered in a broad opportunity to expand and expand the road network, and the opportunity is to be facilitated. The drinking road is in the eleventh. The railway contact network requires that under the condition of single bow flow, the offline rate is not more than 10, the maximum offline time is not more than 10, and the dynamic contact pressure between the bow nets is greater than 50 teams less than 20. In particular, the construction of the Harbin-Dalian high-speed electrified railway will set off a climax. The Beijing-Shanghai high-speed å±¯ gasification railway will be transported at a speed of 8 sinks. The line will be opened to increase the construction equipment of the contact net. The contact network requires constant tension. There will be more and more opportunities.
In order to meet the needs of China's electrification development, the Ministry of Railways Electrochemical Bureau and Xiangfan Nantie Industrial Co., Ltd. jointly developed a contact network hydraulic barrier. To achieve contact, 1 construction is afraid of tension and wire.
2 product structure contact liquid helium 1 force line cutting, used for the contact line of the Suihua railway contact network project and the overhaul line change line or other clues to maintain the constant tension of the tension value in the 05 magnetic range, its structure See 1. Using the modular structure to facilitate the maintenance of the equipment.
The main components include the frame oil tank oil motor hydraulic controller accumulator dial arm tapered sleeve mechanical locking.
Liu Guocai. Ministry of Railways Xiangfan Diesel Engine Parts Factory, telephone 60553 Xiangfan Zhangge, Ministry of Railways Xiangfan Diesel Engine Parts Factory, senior engineer, telephone 1. Wire 2 fuel tank 3. Accumulator 4. Rack 5 oil motor 6 hydraulic controller 7. Dial Line arm 8-wire disc 3 design principle 3.1 Working principle The basic working principle of the hydraulic Benny release frame is the core hole of the mandrel cable of the dial arm. The dial å¿¾ is connected to the spool in a radial direction and is fixed to the shaft seat of the frame. The mandrel end gear of the dial arm meshes with the gear of the oil motor. The pay-off frame is fixed on the flatbed, and the anchor of the outer end of the online disc and the anchoring point of the anchoring anchor section are anchored, and the mandrel of the dialing arm of the moving disc of the flat plate is rotated together to drive the liquid music motor. Rotate. At this time, the liquid jade motor functions as a hydraulic pump. The purpose of changing the tension of the hydraulic motor line by the hydraulic controller.
The hydraulic controller is in turn composed of 3 regulators. They form two coarse adjustment gears for the stop and low resistance gears and the function of the stepless adjustment fine adjustment gear.
4 main technical indicators, with high resistance working condition, complete 35, tension, with low resistance working condition, complete the tension of 12, the two working conditions can be separately achieved 15 milk tension requirements using pre-action control. Rotate the tension clockwise to pull the handle, the tension increases; turn the tension control handle counterclockwise to reduce the tension. 4 The direction of the line is one-way or two-way.
6 The manual brake keeps the clue in the state before braking.
6 Economic and social benefits should be imported from abroad 1 afraid of tension wire equipment. Only the entire contact network construction vehicle group can be purchased, and the price is very expensive. Other serial number items in the vehicle group existing contact net friction belt contact net hydraulic damping pay-off line tension line milk 015 does not display 020 adjustable, display 05 adjustable, display tension error large tension detection no take-up rack no Non-transport vehicle non-dedicated flatbed special flatbed non-dedicated flatbed power source no or no control driving method controlled by the cab of the working vehicle on the working vehicle platform controlled by the lineman by the cab of the working vehicle. The quality of the line is unstable and the quality is stable. Turn the wire position. Adapt to the on-site construction erection of various contact network cues for different requirements of tension 3.2 Hydraulic operating principle see 21. Fuel tank 2 oil filter 2 pressure 4. Accumulator 5. Cut-off 6 oil motor 7. Hydraulic valve group 2 hydraulic operating principle work vehicle When the line is released, the rotation of the coil drives the oil motor to rotate.
By changing the return resistance of the oil motor, the coil torque is controlled while achieving the purpose of controlling the tension.
Considering the convenience of the operator, the operating method is designed with high-resistance and low-resistance working conditions. When the two states are controlled by manual valve replacement, the manual relief valve is in the neutral position, then the neutral relief valve can also be used. Inorganic adjustment function to make the tension of the thread. At the same time, the medium-level relief valve is still limited to the safety of the jade, and the protection of the pay-off frame will be exceeded. The work is prepared and the ç¼ºä¹ æ³• åœ® æ³• æ³• æ³• æ³• æ³• æ³• æ³• æ³• æ³• æ³• æ³• æ³• æ³• æ³• æ³• æ³• æ³• æ³• æ³•yuan. If the Essence Bureau is equipped with the Gismas constant tension line car group, the total investment will be about 500 million yuan. Not to mention this kind of investment, only the cost of maintenance and depreciation of fixed assets is pen astronomical figures; if hydraulic damping hoisting frame is used, only about 10 million yuan will be invested, that is, the constant tension of the wired equipment can be completed. Retrofit, simple maintenance, low depreciation costs, and reduced costs.
The hydraulic damping wire take-up frame is used for high construction efficiency. When the cable is anchored, the amount of clue displacement is small, which can shorten the wiring time. It is proved that the root line of the device can be used to save 510. According to the transportation of the Wuhan-Guangzhou line, the economy is said to be worth 8.16 million yuan per uranium.
The use of the contact net hydraulic damping pay-off frame to release the line is to achieve a constant image, but also to basically eliminate the line due to the uneven operation of the locomotive. The mechanical interlocking mechanism is adopted to ensure the construction safety and tight line.
7 Conclusion After more than 5 months of trialing in the Hengguang section, its performance was fully affirmed by the on-site construction personnel. On December 22, 1999, the hydraulic damper release frame of the contact network passed the technical evaluation of the Ministry of Railways and the Ministry of Electricity, and the review concluded that the device can meet the constant tension line within the range of 05, and the results have good engineering. The practical value has reached the domestic advanced level, and the successful development of the equipment can be promoted in the project. It just meets the urgent needs of the railway development of China's railway assembly and the development of electrified railways, and improves the relationship between the bow and the net. , will certainly produce significant benefits Received date 200 çœ‡ 05 1 light commitment, the development of the field of matt power supply + maturity + DC power supply development experience, the first to pass 8 international certification, the international bid. Gold medal.
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