Front-mounted crushing device and car coupler

Abstract

The utility model relates to a front-mounted crushing device and a car coupler. The front-mounted crushing device comprises a pressurizing pipe, an expansion pipe, a guide rod, a supporting sleeve and a supporting assembly. Wherein the expansion pipe is connected with the pressurizing pipe; the guide rod penetrates through the expansion pipe, one end extends into the pressurizing pipe, and the other end forms a step-shaped structure and is in compression joint with the expansion pipe through the structure; the supporting sleeve sleeves the expansion pipe and is connected with the guide rod through a step-shaped structure, and the inner diameter of the supporting sleeve is larger than the outer diameter of the expansion pipe during expansion; the supporting assembly is connected with the supporting sleeve. The supporting sleeve is sleeved outside the expansion pipe, so that the crushing assembly can be integrally located on the supporting assembly, the expansion function of the expansion pipe is not affected, the energy absorption effect of the crushing device is guaranteed, meanwhile, the crushing assembly can freely slide in the length direction of the car coupler, and the overload function of the car coupler is achieved when the car coupler is subjected to large impact force.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the rail vehicle technical field, especially relate to a front -mounted crush device and car coupler. BACKGROUND

[0002] The crush device is a part of the coupler buffer device, and is used for absorbing energy when the train collides. When the train collides, if the load borne by the coupler is lower than the trigger force of the crush device, the crush device does not act, and all impact energy is absorbed by the buffer. When the load borne by the coupler is higher than the trigger force of the crush device, the crush device acts, the expansion pipe produces plastic deformation, and then impact energy is absorbed, so that the safety of the train and passengers is effectively protected.

[0003] In the prior art, in the limited installation environment of the train under space, the front-mounted crush device is usually used for energy absorption. Moreover, since the front-mounted crush device does not have an overload function, in order to realize the overload, the buffer device is usually arranged on the rubber support, and the front-mounted crush device is arranged between the buffer device and the coupling system.

[0004] Although this design can realize the overload function, it cannot be applied to all vehicle types. In actual application, for part of the vehicle types, the undercarriage space is insufficient to simultaneously configure the buffer device and the front-mounted crush device, and the demand for the energy absorption and the overload function of the coupler buffer device cannot be simultaneously met. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving one of the above technical problems, and provides a front-mounted crush device and a coupler.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0007] A front-mounted crush device comprises:

[0008] A pressurizing pipe;

[0009] An expansion pipe is connected with the pressurizing pipe, and the expansion pipe is extruded to deform when the pressurizing pipe is subjected to an axial force greater than the trigger force of the pressurizing pipe;

[0010] A guide rod penetrates the expansion pipe, one end of the guide rod extends into the pressurizing pipe, and the other end of the guide rod is formed as a stepped structure, the stepped structure comprises an inner stepped portion and an outer stepped portion, and the inner stepped portion is press-bonded with the expansion pipe;

[0011] A support sleeve is sleeved on the outside of the expansion pipe, and one end of the support sleeve is connected with the outer stepped portion; the inner diameter of the support sleeve is greater than the outer diameter of the expansion pipe when the expansion pipe is expanded;

[0012] A support assembly is connected with the support sleeve, and provides a support force for the support sleeve.

[0013] Some embodiments of the utility model provide with the expansion pipe between the pressurizing pipe and the pressurizing cone, the pressurizing cone is pressed and is installed in the end of pressurizing pipe, and the taper surface of pressuroni is contacted and is connected with the inner surface of expansion pipe.

[0014] Some embodiments of the utility model provide that the end of expansion pipe and pressurizing pipe cooperation side is provided with the flared section, and the taper surface of pressurizing cone is contacted and connected with the inner surface of flared section.

[0015] Some embodiments of the utility model provide that the end of guide rod in pressurizing pipe is fixed with end nut, and the inner wall of pressurizing pipe is provided with protruding part, and end nut is contacted and connected with protruding part.

[0016] One end of end nut is provided with anti -rotation part, and anti -rotation part is fixedly connected with guide rod through bolt.

[0017] Some embodiments of the utility model provide that the outer side of outer step part is provided with limiting portion in circumference, and the end of support sleeve is contacted and connected with limiting portion after being connected with outer step part.

[0018] Some embodiments of the utility model provide that the key groove is formed on the rod body in the inside of expansion pipe or pressurizing pipe, the guide key is installed in the key groove, and the outer surface of guide key is attached to the inner surface of pressurizing pipe.

[0019] Some embodiments of the utility model provide that the support assembly includes horizontal support piece, vertical support piece and elastic support piece, one end of horizontal support piece is rotatably connected to the hook body of car coupler, and the other end is fixedly connected with vertical support piece, elastic support piece is fixedly connected with vertical support piece, and is contacted and connected with support sleeve, so as to provide elastic supporting force for support sleeve.

[0020] Some embodiments of the utility model provide that the elastic support piece is arranged below the support sleeve.

[0021] Some embodiments of the utility model provide that the elastic support piece is arranged above the support sleeve.

[0022] The support assembly further includes plastic support piece, the plastic support piece is arranged below the support sleeve, and is connected between the elastic support piece through the vertical support piece, so as to provide upward supporting force for the support sleeve.

[0023] Some embodiments of the application further provide a car coupler, comprising:

[0024] The front-mounted crushing device is the front-mounted crushing device described above.

[0025] The connecting seat is connected with the front-mounted crushing device through the shaft pin.

[0026] The mounting seat is fixedly installed on the vehicle body and connected with the connecting seat through the pull-off bolt.

[0027] The utility model discloses beneficial effect lies in:

[0028] 1, the utility model discloses a support sleeve is connected to the outside of the expansion pipe, and the inside diameter of support sleeve is greater than the maximum diameter of expansion pipe when expanding, so that the pressure crushing assembly can be integrally settled on the support assembly, and the expansion function of expansion pipe is not affected, and the energy absorption effect of the pressure crushing device is guaranteed.

[0029] 2, support sleeve and support assembly can slide relatively in the utility model, so that the pressure crushing assembly can slide freely in the length direction of the car hook, and when the car hook is under the condition of being impacted by a greater force, the breakage of the break bolt of the car hook is destroyed, the pressure crushing assembly can retreat to the rear, so that the anti -climbing device and the energy absorption area of the vehicle body of the vehicle under impact play a role, and the overload function is realized, and there is no need to additionally configure the buffer device, and it can adapt to the specific installation environment of the limited space under the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical scheme in the embodiment of the present application or prior art, specific embodiments of the utility model will be described in detail below in combination with the drawings, and other drawings can also be obtained by those skilled in the art without creative labor on the premise that there is no creative labor.

[0031] Figure 1 It is a structure schematic view of a front-mounted pressure crushing device.

[0032] Figure 2 It is a cross-sectional structure schematic view of the pressure crushing assembly provided by the embodiment of the utility model.

[0033] Figure 3 It is a structure schematic view of the guide rod provided by the embodiment of the utility model.

[0034] Figure 4 It is a structure schematic view of the lower-mounted support assembly provided by the embodiment of the utility model.

[0035] Figure 5 It is an installation structure schematic view of the upper-mounted support assembly provided by the embodiment of the utility model.

[0036] Figure 6 It is a structure schematic view of the upper-mounted support assembly provided by the embodiment of the utility model.

[0037] Among them, the reference signs are:

[0038] 1, pressure crushing assembly;11, pressurizing pipe;12, expansion pipe;13, guide rod;131, inner step portion;132, outer step portion;133, limiting portion;14, pressurizing cone;15, guide key;16, end nut;17, anti -rotation piece;18, pull ring;

[0039] 2, support sleeve;

[0040] 3, support assembly; 31, transverse support; 32, vertical support; 33, height adjustment assembly; 331, connecting piece; 332, limiting piece; 34, plastic support;

[0041] 4, connecting seat;

[0042] 5, mounting seat;

[0043] 6, breakaway bolt. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is described and explained below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0045] Obviously, the drawings in the following description are only some examples or embodiments of the present application, and for those of ordinary skill in the art, the present application can also be applied to other similar scenarios without creative labor on the basis of these drawings.

[0046] The terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0047] Unless otherwise defined, the technical terms or scientific terms involved in the present application should be understood as the usual meaning by those of ordinary skill in the art to which the present application belongs. The terms "one", "a", "an", and similar words involved in the present application do not represent quantity limitation, which can represent singular or plural. The terms "include", "contain", "have" and any variations thereof involved in the present application are intended to cover non-exclusive inclusion.

[0048] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0049] The technical scheme of the utility model will be explained in detail below in combination with specific embodiments and the accompanying drawings.

[0050] As shown in the accompanying drawings, in one illustrative embodiment of the utility model, the crush device comprises a crush assembly 1, a support sleeve 2 and a support assembly 3. Figure 1 - the accompanying drawings Figure 6 In one illustrative embodiment of the utility model, the crush device comprises a crush assembly 1, a support sleeve 2 and a support assembly 3.

[0051] The crush assembly 1 comprises a pressurizing pipe 11, an expansion pipe 12 and a guide rod 13.

[0052] When the vehicle body is triggered by a collision, the pressurizing pipe 11 can be subjected to an axial force greater than its own triggering force.

[0053] The expansion pipe 12 is connected with the pressurizing pipe 11, and when the pressurizing pipe 11 is subjected to an axial force greater than its triggering force, the expansion pipe 12 is extruded to cause stable plastic expansion deformation of the expansion pipe 12 to absorb energy.

[0054] The guide rod 13 is used to connect the pressurizing pipe 11 and the expansion pipe 12 in series, is arranged in the expansion pipe 12, extends into the pressurizing pipe 11 at one end, and is formed into a stepped structure at the other end and connected with the expansion pipe 12. The stepped structure comprises an inner stepped portion 131 and an outer stepped portion 132. The diameter of the inner stepped portion 131 is smaller than that of the expansion pipe 12, and the inner stepped portion 131 is press-connected with the expansion pipe 12; the outer stepped portion 132 is arranged outside the expansion pipe 12 and has a diameter greater than that of the expansion pipe 12 and is used to be connected with the support sleeve 2.

[0055] The support sleeve 2 is in a cylindrical structure and is used to bear the weight of the through channel and the crush device in the vertical direction. The support sleeve 2 is sleeved outside the expansion pipe 12 at one end and connected with the outer stepped portion 132 at the other end. The inner diameter of the support sleeve 2 is greater than the outer diameter of the expansion pipe 12 when the expansion pipe 12 is expanded, so as to avoid affecting the expansion of the expansion pipe 12 and the energy absorption effect of the crush device.

[0056] The support assembly 3 is arranged above or below the support sleeve 2 and connected with the support sleeve 2 to provide elastic support force for the support sleeve 2.

[0057] In the above illustrative embodiment, the support sleeve 2 is sleeved outside the expansion pipe 12, so that the crush assembly 1 can be placed on the rubber support as a whole and the expansion function of the expansion pipe 12 is not affected, and the energy absorption effect of the crush assembly 1 is ensured. At the same time, the structure makes the crush assembly 1 freely slide in the length direction of the car hook, and when the car hook is subjected to a large impact force, the broken bolt 6 of the car hook is damaged and broken, the support sleeve 2 and the support assembly 3 can slide relatively, and then the crush assembly 1 can retreat to the rear, so that the anti-climbing device of the vehicle and the energy absorption area of the vehicle body can play a role, and no additional buffer device is needed to realize the overload function of the whole hook buffer device.

[0058] In some embodiments of the utility model, the pressurizing pipe 11 and the expansion pipe 12 are provided with a pressurizing cone 14, the pressurizing cone 14 is press-fitted at the end of the pressurizing pipe 11 and embedded in the expansion pipe 12.

[0059] In some embodiments of the utility model, the end of the expansion pipe 12 and the pressurizing pipe 11 is provided with a flared section, and the taper surface of the pressurizing cone 14 is in contact with the inner surface of the flared section to fully exert the guiding effect of the pressurizing cone 14.

[0060] In some embodiments of the utility model, the end of the guide rod 13 located in the pressurizing pipe 11 is fixed with an end nut 16, the end nut 16 is threadedly connected to the end of the guide rod 13, the inner wall of the pressurizing pipe 11 is provided with a protruding part, the protruding part is in contact with the end nut 16 to limit the end nut 16 and prevent the guide rod 13 from being pulled out of the pressurizing pipe 11.

[0061] In order to prevent relative rotation between the end nut 16 and the guide rod 13, one end of the end nut 16 is provided with an anti-rotation part 17, and the anti-rotation part 17 is fixedly connected to the guide rod 13 through a bolt.

[0062] In some embodiments of the utility model, one end of the end nut 16 protrudes from the end of the guide rod 13, and the inner surface of the protruding part is a gear-like structure including a plurality of pairs of opposite grooves, the anti-rotation part 17 is a strip-shaped plate structure, the two ends of the anti-rotation part 17 are embedded in two opposite grooves respectively, and the anti-rotation part 17 is fixedly connected to the guide rod 13 through a gasket bolt to prevent the end nut 16 from rotating radially relative to the guide rod 13.

[0063] In some embodiments of the utility model, in order to further realize the guiding function, a key groove is formed in the rod body of the guide rod 13 located inside the expansion pipe 12 or the pressurizing pipe 11, and a guide key 15 is installed in the key groove, and the outer surface of the guide key 15 is in contact with the inner surface of the pressurizing pipe 11.

[0064] In some embodiments of the utility model, in order to prevent the support sleeve 2 from sliding relative to the guide rod 13, a limiting part 133 is circumferentially arranged outside the outer step part 132, and after the support sleeve 2 is press-fitted with the outer step part 132, the end is in contact with the limiting part 133, and the support sleeve 2 is limited by the limiting part 133.

[0065] In some embodiments of the utility model, in order to further transmit the longitudinal load, a pull ring 18 is further included, and the pull ring 18 is fixedly connected to the part of the guide rod 13 located outside the expansion pipe 12.

[0066] In some embodiments of the present application, the guide rod 13, the support sleeve 2 and the pull ring 18 are assembled into one body by using a welding process.

[0067] In some embodiments of the present application, the support assembly 3 comprises a horizontal support member 31, a vertical support member 32 and an elastic support member.

[0068] The horizontal support member 31 is rotatably connected to the hook body at one end, so that the horizontal support member 31 can rotate and swing together with the hook body.

[0069] The vertical support member 32 comprises two vertical support members, which are vertically arranged on both sides of the support sleeve 2 and fixedly connected to the horizontal support member at one end.

[0070] The elastic support member is arranged between the two vertical support members 32 and connected to the vertical support members 32, and is in contact with the support sleeve 2 to provide elastic support force for the support sleeve 2.

[0071] In some embodiments of the present application, as shown in Figs. Figure 1 and Figs. Figure 4 The support assembly is a lower-mounted support assembly, and the elastic support member is arranged below the support sleeve 2 to provide upward elastic support force for the support sleeve 2.

[0072] In some embodiments of the present application, as shown in Figs. Figure 5 - Figs. Figure 6 The support assembly is an upper-mounted support assembly, and the elastic support member is arranged above the support sleeve 2.

[0073] In order to cooperate with the elastic support member, the support assembly 3 further comprises a plastic support member 34. The plastic support member 34 is arranged below the support sleeve 2 and between the two vertical support members 32, and is connected to the two vertical support members 32, and further connected to the elastic support member through the vertical support members 32 to provide upward support force for the support sleeve 2.

[0074] In some embodiments of the present application, the elastic support member and the vertical support member 32 are connected through a height adjusting assembly 33.

[0075] In some embodiments of the present application, the plastic support member 34 and the vertical support member 32 are connected through the height adjusting assembly 33.

[0076] In some embodiments of the present application, the height adjusting assembly 33 comprises a connecting member 331 and a limiting member 332, wherein the connecting member 331 is specifically an adjusting bolt, and the limiting member 332 is specifically an adjusting nut.

[0077] The connecting piece 331 is inserted into the connecting hole at the end of the vertical support piece 32 through the elastic support part and is in sliding connection with the vertical support piece 32. The limiting piece 332 is connected to the connecting piece 331 and includes two limiting pieces, which are distributed between the elastic support part and the vertical support piece 32 and are in contact connection with the elastic support part and the vertical support piece 32, respectively, so as to limit the position of the elastic support part in the axial direction of the connecting piece 331, and the vertical distance between the elastic support part and the vertical support piece 32 can be controlled by adjusting the distance between the two connecting pieces 331.

[0078] The connecting piece 331 is inserted into the connecting hole at the end of the vertical support piece 32 through the elastic support part and is in sliding connection with the vertical support piece 32. The limiting piece 332 is connected to the connecting piece 331 and includes two limiting pieces, which are distributed between the elastic support part and the vertical support piece 32 and are in contact connection with the elastic support part and the vertical support piece 32, respectively, so as to limit the position of the elastic support part in the axial direction of the connecting piece 331, and the vertical distance between the elastic support part and the vertical support piece 32 can be controlled by adjusting the distance between the two connecting pieces 331.

[0079] The vertical height of the elastic support part and the plastic support part 34 can be flexibly adjusted through the height adjustment assembly 33 at both ends of the vertical support piece 32, so that the support assembly 3 provided by the utility model can be applied to different types of car couplings and different working conditions, and has good versatility.

[0080] Some embodiments of the application further provide a car coupling, which comprises a front-mounted crushing device, a connecting seat 4 and a mounting seat 5.

[0081] The front-mounted crushing device is the front-mounted crushing device described above.

[0082] The connecting seat 4 and the front-mounted crushing device are connected through a shaft pin.

[0083] The mounting seat 5 is fixedly installed on a vehicle body and is connected with the connecting seat 4 through a pull-off bolt 6.

[0084] When the car coupling is subjected to a large impact force, the pull-off bolt 6 will be damaged and broken, the crushing device and the connecting seat 4 can retreat as a whole to the rear, and the overload function is realized, so that the anti-climbing device of the impacted vehicle and the energy absorption area of the vehicle body can play a role.

[0085] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0086] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A pre-crushing device, characterized in that include: Pressure hose; An expansion tube is connected to the pressure tube. When the pressure tube is subjected to an axial force greater than the triggering force of the pressure tube, the expansion tube is squeezed, causing the expansion tube to deform. A guide rod passes through the expansion tube, with one end extending into the pressurization tube and the other end forming a stepped structure, the stepped structure including an inner stepped portion and an outer stepped portion; the inner stepped portion is pressed against the expansion tube. A support sleeve is fitted onto the outside of the expansion tube, with one end connected to the outer stepped portion; the inner diameter of the support sleeve is larger than the outer diameter of the expansion tube when it expands. A support component is connected to the support sleeve to provide support force to the support sleeve.

2. The pre-positioned crushing device of claim 1, wherein, A pressure cone is provided between the pressure tube and the expansion tube. The pressure cone is press-fitted onto the end of the pressure tube, and the conical surface of the pressure cone is in contact with the inner surface of the expansion tube.

3. The pre-positioned crushing device of claim 2, wherein, The end of the expansion tube that mates with the pressure tube is provided with a flared section, and the conical surface of the pressure cone is in contact with the inner surface of the flared section.

4. The prepositioning press crush device of claim 1, wherein, The end of the guide rod located inside the pressure tube is fixed with an end nut, and the inner wall of the pressure tube is provided with a protrusion that contacts and connects with the end nut; One end of the end nut is provided with an anti-rotation component, which is fixedly connected to the guide rod by bolts.

5. The pre-positioned crushing device of claim 1, wherein, A limiting part is provided on the outer circumferential side of the outer step portion; after the support sleeve is connected to the outer step portion, its end is in contact with the limiting part.

6. The pre-positioned crushing device of claim 1, wherein, The guide rod has a keyway on its body inside the expansion tube or the pressurization tube, and a guide key is installed in the keyway. The outer surface of the guide key is in contact with the inner surface of the pressurization tube.

7. The pre-positioned crushing device of claim 1, wherein, The support assembly includes a lateral support, a vertical support, and an elastic support. One end of the lateral support is rotatably connected to the coupler body, and the other end is fixedly connected to the vertical support. The elastic support is fixedly connected to the vertical support and is in contact with the support sleeve to provide elastic support force to the support sleeve.

8. The prepositioning press crush device of claim 7, wherein, The elastic support is located below the support sleeve.

9. The pre-positioned crushing device of claim 7, wherein, The elastic support is disposed above the support sleeve; The support assembly further includes a plastic support member disposed below the support sleeve and connected to the elastic support member via the vertical support member to provide an upward support force to the support sleeve.

10. A vehicle coupling, characterised in that include: The pre-positioned crushing device is the pre-positioned crushing device as described in any one of claims 1-9; The connecting seat is connected to the front-mounted crushing device via a pivot pin; The mounting bracket is fixedly installed on the vehicle body and connected to the connecting bracket by pull-out bolts.

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