Coupler buffer device with cutting type energy-absorbing bumper

A buffer device and bumper technology, which is applied to traction devices, transportation and packaging, railway car body parts, etc., can solve the problems of limited energy absorption and energy absorption travel, easy failure, large volume, etc. Good energy absorption effect, small volume effect

Inactive Publication Date: 2011-09-14
CENT SOUTH UNIV
9 Cites 24 Cited by

AI-Extracted Technical Summary

Problems solved by technology

Its disadvantages: its energy absorption and energy absorption stroke...
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Abstract

The invention relates to a coupler buffer device with a cutting type energy-absorbing bumper. The coupler buffer device comprises a coupler head, a coupler body, an energy absorber and a buffer, wherein the energy absorber has a cutting type energy-absorbing anti-collision structure; and one end of the energy absorber is in sleeve connection with the tail part of the coupler body, and the other end of the energy absorber is in rigid connection with the buffer. The energy absorber with the cutting type energy-absorbing anti-collision structure has a structure 1, wherein an energy-absorbing element and a cutter are arranged in an outer sleeve, the cutting edge of the cutter is contacted with the energy-absorbing element, and one end of a cutter rod of the cutter is contacted with the tail part of the coupler body. The energy absorber with the cutting type energy-absorbing anti-collision structure has a structure 2, wherein the outer sleeve and an inner sleeve form an interlayer barrel structure with lower inside and higher outside, and the energy-absorbing element is arranged in the inner sleeve; a threshold spring is arranged between the outer sleeve and the inner sleeve, and one end of the threshold spring is contacted with the tail part of the coupler body; the inner wall of the inner sleeve is provided with a guide plate to form a guide cavity; a blade is arranged on the middle part of the cutter rod, and the cutting edge of the blade is contacted with the energy-absorbing element; and the end of the cutter rod facing the buffer passes through a pre-tightening piece arranged on the rear tail part of the guide plate, and an idle stroke gap is formed between the free end of the cutter rod and the tail part of the coupler body.

Application Domain

Draw-gear

Technology Topic

Energy absorbingEnergy absorbers +3

Image

  • Coupler buffer device with cutting type energy-absorbing bumper
  • Coupler buffer device with cutting type energy-absorbing bumper
  • Coupler buffer device with cutting type energy-absorbing bumper

Examples

  • Experimental program(2)

Example Embodiment

[0026] Example 1:
[0027] The hook head 1, the hook body 2, the energy absorber 4, and the buffer 5 are connected in sequence; the energy absorber 4 is a cutting-type energy-absorbing and anti-collision structure, and includes a jacket 9, a knife bar 6, a blade 7, and an energy-absorbing element 13; The outer sleeve 9 is a cylindrical structure with a bottom, in which the energy absorbing element 13 of the cylindrical structure is installed; the open end of the outer sleeve 9 is provided with a stop ring to incorporate the boss of the hook body tail 3 into it, which is a sleeve Type connection; the blade 7 is installed at one end of the knife shaft 6, and its blade is in contact with the energy absorbing element 13; the free end of the knife shaft 6 is in contact with the end of the boss of the hook body tail 3. When the blades 7 are in a group, the cutting edges are evenly distributed on the same circumference. The cutting edges of the blade 7 are arranged in a spiral shape. The energy absorbing element 13 has a variable cross-section.
[0028] The minimum force of cutting work done by the cutting edge of the blade 7 into the energy absorbing element 13 is the threshold value for energy absorption and collision avoidance. In this embodiment, the threshold value is not less than 7200 KN.

Example Embodiment

[0029] Example 2:
[0030] The hook head 1, the hook body 2, the energy absorber 4, and the buffer 5 are connected in sequence; the energy absorber 4 is a cutting-type energy-absorbing and anti-collision structure, including a jacket 9, a knife bar 6, a blade 7, a threshold spring 8, and a suction The energy element 13 and the inner sleeve 14; the outer sleeve 9 and the inner sleeve 14 constitute a sandwich cylinder structure with a low inner and a high outer sleeve, and the inner sleeve 14 is equipped with the energy-absorbing element 13 of the cylinder structure; the open end of the outer sleeve 9 is provided with a stop The retaining ring incorporates the boss of the hook body tail 3, a threshold spring 8 is installed between the outer sleeve 9 and the inner sleeve 14. The free end of the threshold spring 8 is in contact with the boss end of the hook body tail 3; the inner wall of the inner sleeve 14 is set A guide plate with a through hole, the guide plate forms the inner cavity of the inner sleeve 14 near the end of the buffer 4 into the guide cavity 11; the blade 7 is installed in the middle of the knife shaft 6, and its blade is in contact with the energy absorbing element 13; After the guide rod 12 at the end of the knife bar 6 facing the buffer 4 passes through the guide plate with a through hole, a pretensioner 10 is installed at its tail, and an empty stroke gap is provided between the free end of the knife bar 6 and the hook body tail 3. When the blades 7 are in a group, the cutting edges are evenly distributed on the same circumference. The cutting edges of the blade 7 are arranged in a spiral shape. The energy absorbing element 13 has a variable cross-section.
[0031] The hook body tail 3 compresses the threshold spring 8 until the boss of the hook body tail 3 is in contact with the free end of the knife rod 6. The reaction force of the threshold spring 8 is the threshold value for energy absorption and collision avoidance, and then the blade 7 is pushed to cut into the energy absorption element 13 Perform cutting work. In this embodiment, the threshold is not less than 7200KN.
[0032] working principle:
[0033] In Embodiment 1, when the impact force transmitted by the hook head 1 is greater than the threshold value, the boss of the hook body tail 3 pushes the cutting edge of the blade 7 into the energy absorbing element 13 to perform cutting work. As long as the energy absorbing element 13 is not completely destroyed, it can still be used again in the future. After each collision occurs, the blade 7 stays in the final position after cutting work and energy absorption.
[0034] In embodiment 2, when the impact force transmitted by the hook head 1 is greater than the threshold value, the threshold spring 8 until the boss of the hook body tail 3 contacts the free end of the knife shaft 6, and the boss of the hook body tail 3 pushes the blade 7 Cut into the energy absorbing element 13 to perform cutting work. As long as the threshold spring 8 or the energy absorbing element 13 is not completely destroyed, it can still be used again in the future. After each collision occurs, the blade 7 stays in the final position after cutting work and energy absorption.
[0035] When the cutting edge of the blade 7 is inserted into the energy absorbing element 13 to cut down a set of cutting layers, two processes of energy conversion and deceleration and buffering are included.
[0036] The process of energy conversion is to convert the energy of the impact source into thermal energy, internal energy of the cutting work or other energy through cutting work to achieve the purpose of consuming the energy of the impact source.
[0037] The process of deceleration and buffering, that is, by setting the parameters of the blade 7 and the energy absorbing element 13, the travel speed of the blade 7 is set to change from fast to slow, which is equivalent to installing a motor vehicle between the rolling stock of the train. The deformable body similar to the airbag can effectively attenuate the approach speed of the impact source, extend the approach time of the impact source, and play a buffering role.
[0038] The simultaneous occurrence of the aforementioned energy conversion and deceleration buffer can effectively reduce the actual force of the impact source on the rolling stock in the train set. The maximum value of the actual force should be safe for the rolling stock and can be based on the existing technology. The theoretical method is calculated.
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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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