CN202669836U - Overload protection energy absorption device for hook buffer - Google Patents
Overload protection energy absorption device for hook buffer Download PDFInfo
- Publication number
- CN202669836U CN202669836U CN 201220278372 CN201220278372U CN202669836U CN 202669836 U CN202669836 U CN 202669836U CN 201220278372 CN201220278372 CN 201220278372 CN 201220278372 U CN201220278372 U CN 201220278372U CN 202669836 U CN202669836 U CN 202669836U
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- China
- Prior art keywords
- flange
- converting pipe
- overload protection
- energy absorption
- absorption device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to an overload protection energy absorption device for a hook buffer and belongs to the technical field of railway vehicles. A flange is arranged at the outer end of a deformation pipe of the device; a diameter reducing section is formed at the inner end of the deformation pipe of the device; a hub groove is formed in the end of the diameter reducing section; a reduction mounting seat hollowed to form an inner cavity is provided with an inner conical section used for sleeving the deformation pipe and matched with the diameter reducing section; a flange is arranged at one end of the reduction mounting seat; a shrinkage hole step is arranged in an inner hole at the flange; a rotation stop structure is arranged at the screw cap end of a traction bolt, penetrates through the deformation pipe and is circumferentially limited in the hub groove; an inner thread and an outer thread are arranged at the two ends of a mounting shaft respectively; the inner thread end is inserted into the inner hole at the flange from one end far away from the deformation pipe and limited on the shrinkage hole step; and the traction bolt is screwed with the inner thread. The overload protection energy absorption device has the advantages of high specific absorption energy, simple and compact structure and convenience in mounting at the same time, the conventional expansion device can be replaced, the shortcomings of large weight, high cost and high fixing and mounting requirements in case of rear-mounting are avoided, and the mounting space at the bottom of a vehicle body is saved.
Description
Technical field
The utility model relates to overload protection energy absorption device a kind of and that the rail car coupler shock absorber is integrated, and especially a kind of hook is slow uses the overload protection energy absorption device, belongs to the guideway vehicle technical field.
Background technology
In the prior art, be provided with energy absorbing structure in the coupler and draft gear of vehicle end, its effect be produce when absorbing vehicle and being accidentally impacted impulsive force, with protection personnel and vehicle arrangement safety.Application number 200820180063.X, 200820115355.5 Chinese patent have disclosed the typical structure of expanding overload protection energy absorption device.The way of realization of the expanding type energy absorption device of this overload protection is the energy absorbing converting pipe.When vehicle was subject to accidental shock, the impulsive force of generation was pressed into the expansion set on the draw bar in the converting pipe by force, converting pipe generation radial expansion, and the plastic deformation by converting pipe absorbs energy and relaxes impulsive force.Adopt the form of hitch+overload protection energy absorption device+energy disperser series connection to be installed on the mount pad of vehicle body bottom frame; three parts are all at the homonymy of mount pad; simple in structure; reliable effect; mounting structure is comparatively compact; be the slow keystone configuration form of present cleek, but it is lower than energy-absorbing (capacity that unit weight absorbs).Application number is that the European patent of EP1955918 and the US Patent of US2008277366 disclose contraction type overload protection energy absorption device; be subject to its deformation principle and action form; need to be installed on the energy disperser afterbody; it is hitch+energy disperser series connection; in the both sides that the overload protection energy absorption device then are installed on the vehicle body bottom frame mount pad; especially the slow overload protection energy absorption device of using of contraction type hook needs to adopt 4 long binding bolts to fix.Although this structure is conducive to adopt high-capacity energy disperser at the front end of mount pad, the structure of its overload protection energy absorption device and installation fixed form are comparatively complicated, and assembling is had relatively high expectations.
The utility model content
The purpose of this utility model is: utility model is a kind of simple in structure, compact, is installed on the slow overload protection energy absorption device of using of hook of vehicle body bottom frame mount pad front end, to substitute expanding overload protection energy absorption device; Solve simultaneously that rear-mounted overload protection energy absorption device weight is large, cost is high and assembling, install and need the technical barrier simplified.
In order to reach above purpose, the slow basic technical scheme with the overload protection energy absorption device of hook of the present utility model is: comprise
Hollow forms the converting pipe of inner chamber, and the outer end of described converting pipe has flange, and inner formation has the undergauge section of tapering, and the termination of described undergauge section forms the hub groove with circumferential restraining structure;
Hollow forms the reduction mount pad of inner chamber, the inner cone section that described reduction mount pad has the described converting pipe of suit and matches with described undergauge section, the hardness of described at least inner cone section is higher than described converting pipe, described reduction mount pad has flange flange away from an end of converting pipe, has the shrinkage cavity step in the endoporus at described flange flange place;
The nut end has the draw bolt of spline structure, and described draw bolt passes described converting pipe and circumferentially is limited in described hub groove, and forms circumferential constraint with described converting pipe;
Two ends have respectively the installation shaft of internal and external screw thread, and described female end is from inserting the endoporus of described flange flange away from an end of converting pipe, and are limited in described shrinkage cavity step, and described draw bolt and described negative thread screw.
Above-mentioned reduction cover can be made of adjacent reduction ring and mount pad, the inner cone section that wherein said reduction ring has the described converting pipe of suit and matches with described undergauge section, described mount pad has flange flange away from an end of converting pipe, has the shrinkage cavity step in the endoporus at described flange flange place.
During installation, the converting pipe flange end is connected with hitch, and mount pad, draw bolt are connected with vehicle body bottom frame by the energy disperser that is installed on the installation shaft.Its energy-absorbing adopts contraction type---and namely the plastic deformation by converting pipe generation radial shrinkage absorbs energy, relaxes longitudinal impact force, and then similar expanding type energy absorption device is installed, and can be installed on the front end of vehicle body bottom frame.Therefore; hook of the present utility model is slow have advantages of simultaneously with overload protection device larger, simple and compact for structure, easy for installation than energy-absorbing; can substitute the slow overload protection energy absorption device of using of existing expanding hook fully; and avoided that rear-mounted overload protection device weight is large, cost is high and fixing, the demanding shortcoming of mounting means, and saved the installing space of vehicle bottom.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the three-dimensional sectional structure schematic diagram of an embodiment of the utility model.
Fig. 2 is the plan cross-section structural representation of Fig. 1 embodiment.
The specific embodiment
Embodiment one
The hook of the present embodiment is slow with the overload protection energy absorption device as shown in Figure 1, 2; converting pipe 5 with hollow formation inner chamber; the outer end of this converting pipe has annular lip 5-1, the inner undergauge section 5-2 with tapering that forms, and the termination of this undergauge section forms the hub groove with circumferential restraining structure.The reduction mount pad that also has hollow formation inner chamber, this reduction mount pad both can be integral structure, also can be as shown in Figure 1, 2, consisted of by adjacent reduction ring 3 and mount pad 6, wherein the reduction ring has the inner cone section that is set with converting pipe 5 and matches with its undergauge section 5-2, mount pad 6 has flange flange away from an end of converting pipe 5, has the shrinkage cavity step in the endoporus at this flange flange place.The hardness of inner cone section is higher than converting pipe 5.The nut end (the inner) of draw bolt 2 has spline structure---and easily expect, various non-round nuts all can play the spline effect of constraint rotation.Draw bolt 2 passes converting pipe 5 and connects the hub groove that circumferentially is limited in converting pipe 5 terminations by feather key 1, forms circumferentially constraint with converting pipe 5.Installation shaft 4 two ends have respectively internal and external screw thread, and female end is from inserting the endoporus of mount pad 6 flange flanges away from an end of converting pipe 5, and are limited in its shrinkage cavity step, and draw bolt 2 screws with negative thread, and is screwed to the predetermincd tension of regulation.The outside thread of installation shaft 4 is positioned at the undergauge outer end.
When car brakeing or when being subject to unexpected longitudinal impact; impact force action sequentially is hitch → part 5 converting pipes → part 3 reduction ring → parts 6 mount pads → energy disperser → vehicle body bottom frame; excessive such as impulsive force; reach the triggering power of part 5 converting pipes; reduction (plasticity) distortion radially can occur in converting pipe 5-2 end under the restriction of part 3 reduction rings; and enter in the inner chamber of part 6 mount pads, thereby apparatus with shock absorbing, the protection car body.When vehicle launch, the sequence of operation of tractive force is: hitch → part 5 converting pipes → part 2 draw bolts → part 4 installation shaft → energy disperser → vehicle body bottom frame.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (5)
1. a hook is slow uses the overload protection energy absorption device, it is characterized in that comprising:
Hollow forms the converting pipe of inner chamber, and the outer end of described converting pipe has flange, and inner formation has the undergauge section of tapering, and the termination of described undergauge section forms the hub groove with circumferential restraining structure;
Hollow forms the reduction mount pad of inner chamber, the inner cone section that described reduction mount pad has the described converting pipe of suit and matches with described undergauge section, the hardness of described at least inner cone section is higher than described converting pipe, described reduction mount pad has flange flange away from an end of converting pipe, has the shrinkage cavity step in the endoporus at described flange flange place;
The nut end has the draw bolt of spline structure, and described draw bolt passes described converting pipe and circumferentially is limited in described hub groove, and forms circumferential constraint with described converting pipe;
Two ends have respectively the installation shaft of internal and external screw thread, and described female end is from inserting the endoporus of described flange flange away from an end of converting pipe, and are limited in described shrinkage cavity step, and described draw bolt and described negative thread screw.
2. the slow overload protection energy absorption device of using of hook according to claim 1; it is characterized in that: described reduction cover is made of adjacent reduction ring and mount pad; the inner cone section that described reduction ring has the described converting pipe of suit and matches with described undergauge section; described mount pad has flange flange away from an end of converting pipe, has the shrinkage cavity step in the endoporus at described flange flange place.
3. hook according to claim 1 and 2 is slow uses the overload protection energy absorption device, it is characterized in that: described draw bolt passes converting pipe and circumferentially is limited in the hub groove of described converting pipe termination by the feather key connection.
4. hook according to claim 3 is slow uses the overload protection energy absorption device, and it is characterized in that: the outside thread of described installation shaft is positioned at the undergauge outer end.
5. hook according to claim 4 is slow uses the overload protection energy absorption device, and it is characterized in that: described flange is annular lip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220278372 CN202669836U (en) | 2012-06-13 | 2012-06-13 | Overload protection energy absorption device for hook buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220278372 CN202669836U (en) | 2012-06-13 | 2012-06-13 | Overload protection energy absorption device for hook buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202669836U true CN202669836U (en) | 2013-01-16 |
Family
ID=47490760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220278372 Expired - Lifetime CN202669836U (en) | 2012-06-13 | 2012-06-13 | Overload protection energy absorption device for hook buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202669836U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102700563A (en) * | 2012-06-13 | 2012-10-03 | 南车戚墅堰机车车辆工艺研究所有限公司 | Overload protection energy absorption device for hook buffer |
-
2012
- 2012-06-13 CN CN 201220278372 patent/CN202669836U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102700563A (en) * | 2012-06-13 | 2012-10-03 | 南车戚墅堰机车车辆工艺研究所有限公司 | Overload protection energy absorption device for hook buffer |
| CN102700563B (en) * | 2012-06-13 | 2014-11-26 | 南车戚墅堰机车车辆工艺研究所有限公司 | Overload protection energy absorption device for hook buffer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130116 Effective date of abandoning: 20141126 |
|
| RGAV | Abandon patent right to avoid regrant |