CN-116279636-B - Longitudinal traction buffer device for highway and railway dual-purpose vehicle

Abstract

The invention belongs to the technical field of buffers, and particularly relates to a longitudinal traction buffer device for a highway and railway dual-purpose vehicle; the buffer comprises a cylinder body, a first piston, a connecting frame, a traction guide rod and a conversion unit, wherein when the traction guide rod of the buffer moves leftwards under impact force, the first piston moves leftwards at the moment to squeeze hydraulic oil to push a second piston, and a second spring is arranged between a baffle and the second piston, so that the second piston squeezes the second spring when pushing the second piston, and further the impact force is shared as elastic potential energy of the second spring, thereby realizing the purpose of sharing the buffer force, and the same traction guide rod also can achieve the effect of sharing the buffer force when moving rightwards.

Inventors

• WANG QINGHUA

Assignees

• 山东东铁动力科技有限公司

Dates

Publication Date

20260505

Application Date

20230117

Claims (1)

1. 1. The longitudinal traction buffer device for the highway and railway dual-purpose vehicle comprises a coupler, a buffer, a slave plate and a coupler tail frame, and is characterized in that the buffer comprises: the cylinder body (1) is characterized in that two ends of the cylinder body (1) are communicated; the first piston (2) is connected inside the cylinder body (1) in a sliding way; The connecting frames (3), the connecting frames (3) are connected with the two ends of the cylinder body (1) in a threaded manner, the cylinder body (1) and the connecting frames (3) at the two ends form a closed space together, hydraulic oil is filled between the cylinder body (1) and the connecting frames (3) at the two ends, and a first spring (31) is fixed between the end part, far away from the first piston (2), of each connecting frame (3) and the first piston (2); the traction guide rod (4), the traction guide rod (4) is fixedly connected to one side of the first piston (2) and penetrates through the connecting frame (3) on one side of the first piston to be exposed out of the connecting frame (3); The device comprises a first conversion unit (5 a), a plurality of first conversion units (5 a) are arranged on the side wall of a connecting frame (3), the first conversion units (5 a) comprise a conversion frame (51), a baffle plate (52), a second piston (53) and a second spring (54), the conversion frame (51) is fixed on the side wall of the connecting frame (3), the baffle plate (52) is arranged at one end, far away from the connecting frame (3), of the conversion frame (51), the second piston (53) is slidingly connected inside the conversion frame (51), the second spring (54) is arranged between the baffle plate (52) and the second piston (53), one end of the second piston (53) is provided with a T-shaped rod (57), the T-shaped rod (57) penetrates through the baffle plate (52), the second piston (53) is composed of a metal block (531) and a rubber block (532), the inside of the metal block (531) is of a rotatable structure, the rubber block (532) is fixedly connected with two ends of the metal block (531), the T-shaped rod (57) is fixedly connected with the two inner walls (531) of the conversion frame (51), the two vertical grooves (512) are arranged at the positions near the two ends of the conversion frame (531), the side walls of the metal block (531) and the rubber block (532) of the second piston (53) are provided with protruding parts which can be selectively matched with the vertical grooves (511) or the transverse grooves (512); The device comprises a connecting frame (3), a first conversion unit (5 a), a second conversion unit (5 b), a cam (552) and a holding cavity (553), wherein the side wall of the connecting frame (3) is further provided with a plurality of second conversion units (5 b), the second conversion unit (5 b) comprises a I-shaped block (55) and a third spring (56), the I-shaped block (55) is connected to the side wall of the connecting frame (3) in a sliding mode, the third spring (56) is connected between the inner wall of the connecting frame (3) and the I-shaped block (55), one end, far away from the connecting frame (3), of the I-shaped block (55) is of a rotatable structure and is fixedly connected with the cam (552) through a connecting rod (551), the cam (552) is arranged in the holding cavity (553), two ends of the holding cavity (553) are connected with a sliding mode, a fourth spring (555) is fixedly connected between the clamping block (554) and the side wall of the holding cavity (553), and a contact part of the connecting frame (3) and the I-shaped block (55) is provided with a clamping block (556); The first conversion unit (5 a) and the second conversion unit (5 b) both transmit pressure through hydraulic oil, and the longitudinal impact energy is converted into elastic potential energy of the spring, so that buffering or sharing of buffering force is realized.

Description

Longitudinal traction buffer device for highway and railway dual-purpose vehicle Technical Field The invention belongs to the technical field of buffers, and particularly relates to a longitudinal traction buffer device for a highway and railway dual-purpose vehicle. Background The highway and railway dual-purpose tractor is also called as a rail dual-purpose vehicle, and is a special engineering vehicle which can walk on a track and on conventional road surfaces such as a highway. The device is mainly applied to vehicles or locomotives with large loads which are pulled and pushed on rails, and is suitable for shunting operation of operation sites such as various vehicle factories, vehicle segments, locomotive service segments, stations, goods yards and the like; When the highway and railway dual-purpose tractor is used for traction of a train, the car coupler buffer device plays roles of connecting, transferring force and buffering, and the car coupler buffer device connects the vehicles into the train to realize the connection transmission of machinery, electricity and gas paths among the vehicles and buffer the longitudinal force or impact force of the train; The buffer is divided into a spring friction type buffer, a rubber friction type buffer, a hydraulic buffer and the like, however, the impact force born by the buffer is maximal, namely, when the buffer is impacted, the buffer reaches the maximum stroke when the impact force is overlarge, the buffer loses the buffering function, and if the buffer works under the condition of overlarge impact force for a long time, the buffer is likely to be incapable of resetting to cause the buffer to be damaged. In view of the above, the present invention solves the above-mentioned technical problems by providing a longitudinal traction buffer device for a highway and railway vehicle. Disclosure of Invention In order to make up for the defects of the prior art and improve the maximum impact force upper limit bearable by a buffer in the traction buffer device, the invention provides a longitudinal traction buffer device for a highway and railway dual-purpose vehicle. The technical scheme includes that the longitudinal traction buffer device for the highway and railway dual-purpose vehicle comprises a coupler, a buffer, a slave plate and a coupler tail frame, wherein the buffer comprises a cylinder, two ends of the cylinder are communicated, a first piston is connected inside the cylinder in a sliding mode, connecting frames are connected to two ends of the cylinder in a threaded mode, a sealed space is formed by the cylinder and the connecting frames at the two ends together, hydraulic oil is filled between the cylinder and the connecting frames at the two ends, a first spring is fixedly connected between the end, far away from the first piston, of each connecting frame and the first piston, a traction guide rod is fixedly connected to one side of the first piston and penetrates through the connecting frame at one side of the first piston to be exposed outside the connecting frame, a plurality of conversion units are arranged on the side wall of each connecting frame, and the conversion units convert impact energy into elastic potential energy to achieve the purpose of buffering or sharing buffering force. The longitudinal traction buffer device for the highway and railway dual-purpose vehicle is integrally arranged in traction beams at two ends of a chassis of a vehicle body, a front auxiliary plate, a rear auxiliary plate and a buffer are clamped between front auxiliary plate seats and rear auxiliary plate seats of the traction beam, the lower part of the front auxiliary plate seat and the rear auxiliary plate seat are supported by a hook tail frame supporting plate and a hook body supporting beam, the functions of the hook, the buffer and the auxiliary plate and the hook tail frame are respectively that the hook is connected with and transmits traction force and impact force, the buffer is used for buffering impact kinetic energy, the connection mode of the device and the function of the device are specifically referred to the prior art, the connection mode of the device is not limited, in addition, the buffer is not provided with a spring, the buffer is completely realized through a conversion unit, and the buffer unit converts the impact energy into elastic potential energy so as to realize the purpose of buffering. The conversion unit comprises a conversion frame fixedly connected to the side wall of the connecting frame, a baffle plate arranged at one end, far away from the inside of the connecting frame, of the conversion frame, a second piston connected to the inside of the conversion frame in a sliding mode, and a second spring arranged between the baffle plate and the second piston. Preferably, the conversion unit comprises a I-shaped block and a third spring, wherein the I-shaped block is connected to the side wall of the connecting frame in a sliding m