Double-stage double-acting hydraulic cylinder for lateral dump truck in railway

A double-acting hydraulic cylinder and dump truck technology, applied in the field of double-stage hydraulic cylinders, can solve the problems of energy waste, car box disengagement, small lifting force, etc., and achieve the effects of improving unloading safety, reducing the height of the center of gravity, and ensuring the sealing effect.

Inactive Publication Date: 2010-08-25
CRRC HARBIN VEHICLES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pneumatic double-stage single-acting cylinders have disadvantages such as small lifting force, large volume, heavy weight, serious energy waste, easy to cause the carriage to fall out, and poor carriage reset performance in railway side dump trucks.
[0003] The existing dual-stage single-acting cylinders of railway side dump trucks, on the one hand, are affected by the relatively small gas pressure provided by the locomotive air source. To achiev

Method used

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  • Double-stage double-acting hydraulic cylinder for lateral dump truck in railway
  • Double-stage double-acting hydraulic cylinder for lateral dump truck in railway

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The double-stage double-acting hydraulic cylinder of the railway side dump truck consists of: an outer cylinder body 1 installed on the oil cylinder bearing seat 6, and the outer cylinder body 1 passes through the outer support ring 26, the outer combined seal 25 and the outer guide The sleeve 4 is connected to the inner cylinder body 2;

[0018] The inner cylinder body 2 is connected to the piston rod 3 through the inner support ring 24, the inner combination seal 23 and the inner guide sleeve 5;

[0019] The other end of the piston rod 3 cooperates with the top iron shaft 8, and the toe iron 7 is housed on the top iron shaft 8.

[0020] The KF-100 100-ton side dump truck is loaded with the above-mentioned products. The top iron shaft is connected to the top iron seat of the side dump truck box, and the oil cylinder bearing seat is connected to the bottom beam of the side dump truck to form a supporting seat. After testing, the vehicle is in good condition for use and...

Embodiment 2

[0022] The double-stage double-acting hydraulic cylinder of the railway side dump truck described in Embodiment 1, wherein the outer combined seal includes: O-ring 17 , back-up ring 18 , sealing ring 19 , back-up ring 20 and dust-proof ring 13 .

[0023] The inner combination seal described therein includes: O-ring 11 , retaining ring 12 , sealing ring 15 , retaining ring 16 and dustproof ring 9 .

Embodiment 3

[0025] In the double-stage double-acting hydraulic cylinder of the railway side dump truck described in embodiment 1 or 2, the outer side of the outer guide sleeve 4 is in contact with the outer cylinder body 1 through the O-ring 14 and the thread, and the inner guide sleeve 5. The outer side is in contact with the inner cylinder body 2 through the O-ring 10 and the thread.

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Abstract

The invention relates to a double-stage double-acting hydraulic cylinder for a lateral dump truck in a railway. On one hand, air pressure provided by the air source of a locomotive affects the structure of the double-stage single-acting cylinder weakly, on the other hand, to achieve necessary elevating force can result in a larger volume of the cylinder, thereby occupying large effective space of the lateral dump truck in the train, having heavy self weight and wasting the effective traction power of the locomotive. The components of the invention comprise an outer cylinder body (1) arranged on a bearing seat (6) of an oil cylinder, wherein the outer cylinder body (1) is connected with an inner cylinder body (2) through an outer supporting ring (26), an outer combination sealing and an outer guide sleeve (4); the inner cylinder body (2) is connected with a piston rod (3) through an inner supporting ring (24), an inner combined sealing and an inner guide sleeve (5); and the other end of the piston rod (3) is matched with a top iron shaft (8) which is provided with a toe iron (7). The invention has the advantages that the product is used for the lateral dump truck in the railway, lowers gravity center height of a vehicle and improves operation quality.

Description

Technical field: [0001] The invention relates to a two-stage hydraulic cylinder used on a railway side dump truck. Background technique: [0002] Over the years, my country's railway side dump trucks have adopted pneumatic double-stage single-acting cylinders. With the needs of national economic development, railways have developed towards high-speed and heavy-duty directions. Pneumatic double-stage single-acting cylinders have disadvantages such as small lifting force, large volume, heavy weight, serious energy waste, easy to cause the carriage to fall out, and poor carriage reset performance in railway side dump trucks. [0003] The existing dual-stage single-acting cylinders of railway side dump trucks, on the one hand, are affected by the relatively small gas pressure provided by the locomotive air source. To achieve the necessary lifting force, the volume of the cylinder is very large, which occupies a large area of ​​the railway side dump truck. The effective space of...

Claims

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Application Information

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IPC IPC(8): F15B15/16B61D9/04
Inventor 季金刘晓林崔岩
Owner CRRC HARBIN VEHICLES CO LTD
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