WO2022042404A1 - 救援车钩 - Google Patents

救援车钩 Download PDF

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Publication number
WO2022042404A1
WO2022042404A1 PCT/CN2021/113373 CN2021113373W WO2022042404A1 WO 2022042404 A1 WO2022042404 A1 WO 2022042404A1 CN 2021113373 W CN2021113373 W CN 2021113373W WO 2022042404 A1 WO2022042404 A1 WO 2022042404A1
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WIPO (PCT)
Prior art keywords
hook
main body
base body
plate mechanism
coupler
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PCT/CN2021/113373
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English (en)
French (fr)
Inventor
葛杰
段书华
任帅
Original Assignee
中车青岛四方车辆研究所有限公司
青岛思锐科技有限公司
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Application filed by 中车青岛四方车辆研究所有限公司, 青岛思锐科技有限公司 filed Critical 中车青岛四方车辆研究所有限公司
Publication of WO2022042404A1 publication Critical patent/WO2022042404A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G5/00—Couplings for special purposes not otherwise provided for
    • B61G5/04—Couplings for special purposes not otherwise provided for for matching couplings of different types, i.e. transitional couplings

Definitions

  • the present application relates to the technical field of rail vehicle couplers, in particular to a rescue coupler.
  • the rescue coupler is an important device for train rescue. In the field of European rail vehicles, it is very common to use a locomotive equipped with a chain coupler to rescue a train equipped with a type 10 coupler.
  • FIG. 1 is a schematic diagram of a chain coupler 14 in the prior art
  • FIG. 2 is a state diagram of two chain couplers 14 being connected in the prior art.
  • the chain coupler 14 is only connected with the chain coupler 14 , and is realized by the chain 1401 .
  • When connecting hang the chain 1401 on the current side into the hook cavity of the coupler on the opposite side. This method can only withstand tension conditions.
  • side buffers 13 need to be installed on both sides of the train, as shown in Figures 1 and 2, but normal trains do not have such side buffers 13 on both sides, and the chain coupler and the Type 10 coupler themselves cannot be connected.
  • a transition device that is, a rescue coupler
  • a rescue coupler needs to be added in the middle.
  • Problems to be solved by the rescue coupler 1. At the same time, it can adapt to the chain coupler and the 10 type or other close coupler for rescue. 2. The combination with the chain coupler can withstand both tension and compression conditions at the same time.
  • the purpose of the present application is to solve one of the above technical problems, and to provide a transition coupler suitable for connecting with a chain hook, so as to solve the problem of connecting and matching between a locomotive chain hook and a rescue vehicle coupler.
  • a rescue coupler is provided, the structure is as follows:
  • a rescue coupler includes a hook body, two ends of the hook body are respectively provided with a first end connecting mechanism and a second end connecting mechanism, and the second end connecting mechanism includes:
  • the first side support extending along the hook body toward the second end direction;
  • Second side support extending along the hook body toward the second end, and disposed on the opposite side of the first side support;
  • hook pin arranged between the first side support and the second side support
  • An open gap is formed between the hook main body, the first side support, the second side support and the hook pin, so that the chain hook can be hung with the hook pin through the gap.
  • the hook includes a main body section and a hook head, the hook head is provided with a hook groove, and is hung on the hook tail pin through the hook groove, and the hook groove includes:
  • the first arc surface segment connected to the main body segment, and protruding toward the hook head along the main body segment;
  • the second arc surface segment connected to the first arc surface segment, opposite to the protruding direction of the first arc surface segment, and extending opposite to the depth direction and width direction of the hook groove;
  • a third arc surface segment connected to the second arc surface segment, and extending along the second arc surface segment in a direction opposite to the depth of the hook groove;
  • the hook pin is located in the second arc surface section.
  • a first base body is disposed between the first side support and the second side support, and the first base body is configured so that after the hook is connected around the hook tail pin , which can be in contact with the extension side of the hook.
  • the rescue coupler further includes a second base body, which is disposed on the hook body at an interval from the first base body, and a second base body is further disposed between the second base body and the first base body. elastic pieces.
  • the rescue coupler further includes a connecting piece, one end of the connecting piece is connected to the first base body, and the other end of the connecting piece passes through the second base body, and the connecting piece passes through the second base body An elastic piece is arranged between the head of the outlet end and the second base body.
  • the rescue coupler further includes a second base body, which is disposed on the hook body at an interval from the first base body; the rescue coupler further includes a connecting piece, one end of the connecting piece is connected with the first base body.
  • the first base body is connected, the other end passes through the second base body, and an elastic member is provided between the head of the end of the connecting piece passing through the second base body and the second base body.
  • a first base body is disposed between the first side support and the second side support, and the first base body is configured so that after the hook is connected around the hook tail pin , which can be in contact with the extension side of the hook.
  • the rescue coupler further includes a second base body, which is disposed on the hook body at an interval from the first base body, and a second base body is further disposed between the second base body and the first base body. elastic pieces.
  • the rescue coupler further includes a second base body, which is disposed on the hook body at an interval from the first base body; the rescue coupler further includes a connecting piece, one end of the connecting piece is connected with the first base body.
  • the first base body is connected, the other end passes through the second base body, and an elastic member is provided between the head of the end of the connecting piece passing through the second base body and the second base body.
  • the positions of the second base body and the hook pin are configured such that after the hook is connected to the hook pin, the hook pin is located on the first arc surface segment and the hook groove at the junction of the second arc surface segment.
  • the hook body includes: a first body plate mechanism, a second body plate mechanism, a third body plate mechanism, and a fourth body plate mechanism;
  • the first main body plate mechanism and the second main body plate mechanism are arranged at intervals, the third main body plate mechanism is connected to the gap between the first main body plate mechanism and the second main body plate mechanism on the first side, and the fourth main body plate mechanism is connected to the first body plate mechanism.
  • the first side support is integrated with the first main body plate mechanism, and is located at the second end of the first main body plate mechanism, along the first main body plate mechanism toward the hook body an extension in the direction of the second end;
  • the second side support is integral with the second main body plate mechanism, and is an extension section located at the second end of the second main body plate mechanism along the direction of the second main body plate mechanism toward the second end of the hook main body.
  • the first main body plate mechanism, the second main body plate mechanism, the third main body plate mechanism and the fourth main body plate mechanism are assembled by tailor welding.
  • a frame body is disposed between the first side support and the second side support, and a gap between the frame body and the hook pin can accommodate the hook.
  • the provided coupler has the following beneficial effects:
  • the rescue coupler provided by the embodiment of the present application solves the technical problem that the chain hook and the close-coupled coupler are compatible and connected.
  • the function of the chain hook and the rescue coupler can bear the tensile and compressive load at the same time.
  • the rescue coupler provided in this embodiment can rotate around the chain coupler at a certain angle, so as to meet the working conditions of connecting and going up and down slopes with a hook height difference.
  • the rescue coupler provided by the embodiment of the present application is further provided with a balance mechanism, so that the rescue coupler can automatically maintain balance after being connected with the chain coupler, so that the coupler can be kept horizontally connected as a whole; after the connecting action is completed, the coupler is in normal state Under the conditions of tension, compression and up and down slopes, the self-balancing mechanism is not the main force-bearing component, and is in a normal load-bearing state, and the service life of the self-balancing device is long.
  • the rescue coupler provided by the embodiment of the present application optimizes the structure of the hook main body, and adopts frame-type splicing to form a skeleton-type structure, which is flexible in assembly and light in weight, and can reduce the bowing effect of the coupler. Improve the overall portability and operability of the coupler.
  • FIG. 1 is a schematic structural diagram of a chain hook in the prior art
  • FIG. 2 is a schematic diagram of a chain hook connection structure in the prior art
  • FIG. 3 is a schematic structural diagram of a rescue coupler according to an embodiment of the application.
  • FIG. 4 is a schematic diagram of the connection between the rescue coupler and the chain hook according to the embodiment of the application;
  • FIG. 5 is a top view of the rescue coupler shown in FIG. 4 being connected to the chain hook;
  • FIG. 6A is a schematic structural diagram of a chain hook hook according to an embodiment of the application
  • FIG. 6B is a perspective view of a chain hook hook according to an embodiment of the application
  • FIG. 6C is a perspective view of a chain hook hook according to an embodiment of the application
  • FIG. 7 is a schematic diagram of the connection between the rescue coupler and the chain hook according to the embodiment of the application (stretching condition);
  • FIG. 8 is a schematic diagram of the connection between the rescue coupler and the chain hook according to the embodiment of the application (compression condition);
  • FIG. 9 is a schematic diagram of the connection between the rescue coupler and the chain hook according to the embodiment of the application (the rescue coupler rotates counterclockwise relative to the chain hook);
  • FIG. 10 is a schematic diagram of the connection between the rescue coupler and the chain hook according to the embodiment of the application (the rescue coupler rotates clockwise relative to the chain hook);
  • 11 is a schematic diagram of the connection between the rescue coupler and the chain coupler according to another embodiment of the application.
  • hook main body 101. The first main body plate mechanism; 102, The second main body plate mechanism; 103, The third main body plate mechanism; 104, The fourth main body plate mechanism; Mechanism; 12-Second end connecting mechanism; 1201, first side support; 1202, second side support; 1203, hook tail pin; 2, chain hook hook; 21 hook head; 22, main body section; 23, hook groove ; 2301, the first arc segment; 2302, the second arc segment; 2303, the third arc segment; 3, the first base; 4, the second base; 5, the elastic part; 6, the connector; 61, the first a connecting rod; 62, a second connecting rod; 7, a bolt; 8, a stopper; 9, a handle; 10, a frame.
  • the embodiment of the present application provides a rescue coupler, which can be used for connecting the chain coupler with other types of couplers, so as to solve the problem that the chain coupler of the locomotive cannot be directly connected with the vehicle to be rescued in the prior art.
  • the rescue coupler can be used for trailers, rescue Wait for the job.
  • the rescue coupler of the embodiment of the present application includes a hook body 1, and both ends of the hook body 1 are respectively provided with a first end link mechanism 11 and a second end link mechanism 12.
  • the first-end connecting mechanism 11 is used for connecting with the vehicle coupler to be rescued, and its structure is designed according to the type of the vehicle to be rescued.
  • the structures such as the hook tongue and the connecting rod belong to the prior art and will not be described again.
  • the second end connecting mechanism 12 is used for connecting with the locomotive chain coupler, including:
  • the first side support 1201 extends along the hook body 1 toward the second end direction, and the second end direction is the direction away from the vehicle to be rescued;
  • the second side support 1202 extending along the hook body 1 toward the second end, and disposed on the opposite side of the first side support 1201;
  • the hook pin 1203 the first side support 1201 and the second side support 1202 are arranged in a gap, and the hook pin 1203 is arranged between the two to connect the first side support 1201 and the second side support 1202 .
  • both the first side support 1201 and the second side support 1202 are provided with hook pin installation holes, and the hook pin 1203 is inserted into the installation holes;
  • the hook body 1 , the first side support 1201 , the second side support 1202 and the hook pin 1203 form an open gap, so that the chain hook can be hung with the hook pin 1203 through the gap.
  • first side support 1201 and the second side support 1202 are both plate-shaped, and these two parts independently extend toward the second end relative to the hook body 1 . independent gap. After the hook pin 1203 is installed, the gap is further defined between the hook pin 1203 and the hook body 1 . As shown in Figures 4 and 5, when installing the chain hook, hang the hook 2 on the hook tail pin 1203, and the gap between the hook tail pin 1203 and the hook body 1 can make the hook 2 smoothly hang on the hook tail pin 1203 .
  • the first end connecting mechanism 11 of the rescue coupler is connected to the coupler of the vehicle to be rescued, and the second end connecting mechanism 12 is connected to the locomotive chain hook, so that the locomotive can tow the vehicle to be rescued.
  • the chain hook hook 2 includes a main body section 22 and a hook head 21 .
  • the main body section 22 is rod-shaped and is connected to the rescue locomotive, and the hook head 21 is provided at the hook head 21 .
  • the first arc surface segment 2301 located on the side close to the main body segment 22, connected to the main body segment 22, protruding toward the hook head 21 along the main body segment 22, extending in the depth and width directions of the hook groove 23, that is, the first arc
  • the face section 2301 forms an arc-shaped structure protruding to the outside;
  • the second arc surface segment 2302 connected to the first arc surface segment 2301, opposite to the protruding direction of the first arc surface segment 2301, and extending in the depth direction and width direction of the hook groove;
  • the third arc surface segment 2303 connected with the second arc surface segment 2302, and extends along the second arc surface segment 2302 in opposite directions of the depth and width of the hook groove.
  • Fig. 7 shows the state of the coupler pin 1203 in the hook groove 23 under the tension condition.
  • the rescue coupler moves forward as a whole and contacts the front end of the hook groove 23;
  • Fig. 8 shows the compression process.
  • the compressive load will appear in the process of connecting with the coupler of the vehicle to be rescued and the operation process after the connecting, when the compressive load is applied, the rescue coupler moves backward as a whole and hooks up.
  • the rear ends of the grooves 23 are in contact.
  • a hook groove cavity is formed at the intersection of the first arc surface segment 2301 and the second arc surface segment 2302, and the hook tail pin 1203 and the hook groove cavity form a fulcrum structure, so that the two can rotate relative to the fulcrum.
  • Fig. 9 shows the state of the coupler pin 1203 in the hook groove cavity when the rescue coupler rotates counterclockwise relative to the chain hook;
  • Fig. 10 shows the state of the coupler pin 1203 in the hook cavity cavity when the rescue coupler rotates clockwise relative to the chain hook condition.
  • the rescue coupler can rotate around the fulcrum without decoupling. It can be seen that the structure provided by the above embodiment can realize stable connection under various working conditions, and the structure is simple.
  • each arc segment can be processed as required.
  • a hook groove cavity is formed at the junction of the first arc surface section 2301 and the second arc surface section 2302. After the chain hook and the rescue coupler are connected, they are relatively compressed between the rescue coupler and the chain hook (refer to FIG. 8) or rotated relatively counterclockwise. (refer to FIG. 9), the hook pin 1203 is located in the second arc surface 2302 segment, specifically in the hook groove cavity at the intersection of the first arc surface segment 2301 and the second arc surface segment 2302, the hook tail pin 1203 and the hook groove The cavity forms a fulcrum structure, so that the two can rotate relative to the fulcrum.
  • the fulcrum enables the connecting combination of the rescue coupler and the chain coupler to bear the compressive load, which will appear during the connecting process with the coupler of the vehicle to be rescued and the operation process after the connecting.
  • the rescue coupler moves forward as a whole until the coupler pin contacts the front end of the chain coupler coupler cavity, so that the connecting assembly of the rescue coupler and the chain coupler can bear the tensile load.
  • the first side support 1201 and the second side support 1202 A first base body 3 is disposed therebetween, and the first base body 3 is configured such that after the chain hook 2 is hooked around the hook pin 1203 , it can contact the extended side of the chain hook 2 .
  • the first base body 3 is disposed above the first side support 1201 and the second side support 1202 and bridges between them.
  • the first base body 3 can be fixedly disposed between the first side support 1201 and the second side support 1202, and when the hook 2 is connected to the hook tail pin 1203, the first side support 1201 and the second side are supported.
  • the lower part of the support 1202 is inserted into the gap, and the head of the hook 2 (the head of the third arc surface section 2303 ) can abut against the first base body 3 .
  • the head of the hook 2 the head of the third arc surface section 2303
  • the rescue coupler further includes a second base body 4 , which is provided on the hook body 1 at an interval from the first base body 3 .
  • the second base body 4 It and the first base body 3 adopt a plate-like structure, and the two cooperate to form a relative rotation reset balance mechanism between the rescue coupler and the chain hook.
  • the balance mechanism also includes an elastic member, and the elastic member can be a compression spring, a disc spring, Springs, air springs, etc., can elastically deform when the rescue coupler rotates relative to the chain hook. This deformation can be stretched or compressed. When the rescue coupler bows its head, the reaction produced by the deformation of the elastic member can effectively raise the bowed head. the coupler, so that the coupler can be kept horizontally connected as a whole. Based on this principle, the structure of the balance mechanism can be realized by the following two embodiments.
  • An elastic member 5 is further disposed between the first base body 3 and the second base body 4 .
  • the second base body 4 is fixedly arranged on the hook body 1
  • the first base body 3 is connected to the second base body 4 through the elastic member 5
  • the elastic member 5 is disposed between the first base body 3 and the second base body 4 , and the two ends thereof are respectively connected with the first base body 3 and the second base body 4 .
  • the rescue coupler rotates relatively counterclockwise, and the elastic member 5 is stretched due to the force between the first base body 3 and the chain hook hook 4 .
  • the tensile force of the spring 5 acts against the rescue coupler, which can limit the bow of the rescue coupler.
  • the rescue coupler further includes a connecting piece 6 , one end of the connecting piece 6 is connected with the first base body 3 , the other end passes through the second base body 4 , and the connecting piece 6 passes through the end of the second base body 4 .
  • the elastic member 5 is arranged between the head and the second base body 4 .
  • the second base body 4 is fixedly arranged on the hook body 1
  • the first base body 3 is connected to the second base body 4 through the connecting member 6
  • the connecting member 6 can be a connecting rod
  • the elastic member 5 can be a spring.
  • a connecting member hole is provided on the second base body 4, and one end of the connecting rod 6 passes through the connecting member hole on the second base body 4.
  • the first base body 3 is also provided with a connecting piece hole, the other end of the connecting rod 6 penetrates through the connecting piece hole on the first base body 3 , and the penetrating end is fixed by a fixing bolt 7 .
  • the end of the connecting rod 6 extending through the second base 4 is provided with a stopper 8, and the elastic member 5 is installed on the extending end of the connecting rod 6 through the second base 4, and can be connected to the connecting rod 6 in various forms.
  • the elastic piece 5 is sleeved on the connecting rod 6 and is located between the stop piece 8 and the second base body 4 .
  • the rescue coupler rotates relatively counterclockwise, and a force is generated between the first base body 3 and the chain hook hook 2, and the first base body 3 is opposite to the hook.
  • the connecting rod 6 is pulled to move, and the elastic member 5 is compressed. The compressive force of the elastic member 5 acts against the rescue coupler, which can limit the bow of the rescue coupler.
  • the connecting piece 6 includes a first connecting piece and a second connecting piece, which are symmetrically arranged on both sides in the direction of the axis of the hook body, and each connecting piece is provided with the elastic piece 5 .
  • the connecting rod includes two connecting rods, namely the first connecting rod 61 and the second connecting rod 62 , and the two connecting rods are symmetrically arranged on the axis of the hook body 1 .
  • each connecting rod is sleeved with an elastic piece 5 , and the hook 2 passes through the gap between the first connecting rod 61 and the second connecting rod 62 .
  • the arrangement of multiple sets of connector structures can enhance the balancing force of the balancing mechanism and ensure the balancing effect.
  • the self-balancing mechanism is not the main force-bearing component under the normal tension and compression state and the working conditions of up and downhill.
  • the balancing mechanism acts, the hook tail pin 1203 still rotates in the fulcrum formed by the hook groove cavity at the junction of the first arc surface segment 2301 and the second arc surface segment 2302 .
  • the hook main body 1 adopts frame-type splicing to form a skeleton-type structure, which is flexible in assembly and light in weight.
  • the hook body 1 includes: a first body plate mechanism 101 , a second body plate mechanism 102 , a third body plate mechanism 103 and a fourth body plate mechanism 104 .
  • the first body plate mechanism 101 and the second body plate mechanism 102 are spaced apart, the third body plate mechanism 103 is connected to the gap between the first body plate mechanism 101 and the second body plate mechanism 102 on the first side, and the fourth body plate mechanism 104 is connected to the first body plate mechanism 104.
  • the gap between the second side of a main body plate mechanism 101 and the second main body plate mechanism 102 is that the first side is opposite to the second side.
  • the first body plate mechanism 101 , the second body plate mechanism 102 , the third body plate mechanism 103 and the fourth body plate mechanism 104 are assembled by tailor welding to form a hollow frame structure. This structure has the characteristics of light weight, which can reduce the head-down effect of the coupler compared with the weight of the coupler. While reducing weight, it also meets the strength requirements and improves the overall portability and operability of the coupler.
  • each main body plate mechanism depends on the matching structure with the first end connecting mechanism 11 and the second end connecting mechanism 12. It can be adapted and spliced with the hook head end of the hook main body 1 . Further, to achieve better fitting and splicing effect as an example, each main body plate mechanism can be processed from a single plate, or can be further formed by splicing multiple plates.
  • the first side support 1201 is integrated with the first main body plate mechanism 101, and is located at the second end of the first main body plate mechanism 101, along the first main body plate mechanism 101 toward the second end of the hook main body 1 an extension of the direction;
  • the second side support 1202 is integral with the second main body plate mechanism 102 , and is located at the second end of the second main body plate mechanism 102 and extends along the direction of the second main body plate mechanism 102 toward the second end of the hook main body 1 .
  • the support structures on both sides can also be in the form of splicing with the main body plate mechanism on the corresponding side.
  • weight reduction holes 105 may be processed at appropriate positions of each main body plate mechanism.
  • a handle 9 is provided on the hook main body 1 .
  • the handle 9 is provided on the first main body plate mechanism 101 and the second main body plate mechanism 102 .
  • a frame body 10 is disposed between the first side support 1201 and the second side support 1202, and the gap between the frame body 10 and the hook pin 1203 can accommodate the Hook 2.
  • the frame body 10 is located on the opposite side of the second base body 3 , and the distance formed between the frame body 10 and the coupler pin 1203 is configured so that the hook 2 of the coupler can fit between the frame body 10 and the coupler pin 1203 . through the gap between.
  • the first base body 3 and the second base body 4 are located on the outgoing side of the chain hook, and the frame body 10 is located on the incoming side of the chain hook.
  • the main function of the frame body 10 is to prevent the chain hook from unhooking.
  • the hook 2 may be at risk of falling out of the hook pin 1203, and the structure of the frame body 10 can limit the unhooking movement of the chain hook.
  • the frame body 10 is aligned with the hook pin 1203 , and in the direction shown in the figure, it is located just below the axis of the hook pin 1203 .
  • the anti-jump frame 10 may be a U-shaped structure integrally processed with the first side support 1201 and the second side support 1202 , or may be detachable from the first side support 1201 and the second side support 1202 U-shaped structure.
  • the rescue coupler provided by the present application through the action of the hook tail pin, can make the combined combination of the rescue coupler and the chain coupler bear tensile and compressive loads at the same time after being connected, so as to solve the connection problem between the adaptor coupler and the chain coupler.

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Abstract

一种救援车钩，包括钩主体（1），钩主体（1）两端分别设置有第一端连挂机构（11）和第二端连挂机构（12），第二端连挂机构（12）包括：第一侧支撑（1201）：沿钩主体（1）向第二端方向延伸；第二侧支撑（1202）：沿钩主体（1）向第二端方向延伸，设置在第一侧支撑（1201）的相对侧；钩尾销（1203）：设置在第一侧支撑（1201）与第二侧支撑（1202）之间；钩主体（1）、第一侧支撑（1201）、第二侧支撑（1202）及钩尾销（1203）之间呈开放间隙，以使链子钩挂钩（2）可经间隙与钩尾销（1203）挂装。

Description

救援车钩
本申请要求在2020年08月28日提交中国专利局、申请号为202010883148.X、发明名称为“救援车钩”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及轨道车辆车钩技术领域，具体涉及一种救援车钩。
背景技术
救援车钩是用于列车救援的重要装置，在欧洲轨道车辆领域，利用配置链子车钩的机车来救援配置10型车钩的列车非常普遍。
图1为现有技术中链子车钩14的示意图；图2为现有技术中两链子车钩14进行连挂的状态图。在现有技术中，链子车钩14只与链子车钩14进行连挂，且通过链子1401来实现。连挂时，将本侧链子1401挂至对侧链子车钩的钩腔内。该种方式只能承受受拉工况。受压时需要列车两侧设置侧缓冲器13来实现，如图1和图2所示，但正常列车两侧不具备此种侧缓冲器13，且链子车钩与10型车钩本身无法连挂。为解决救援问题，中间需增加过渡装置，即救援车钩。救援车钩需要解决的问题：1.同时适配链子车钩和10型或其他密接车钩，以进行救援。2.与链子车钩组成组合体能够同时承受拉压两种工况。
发明内容
本申请的目的在于解决以上技术问题之一，提供一种适用于与链子钩连挂的过渡车钩，解决机车链子钩与救援车辆车钩连挂配合的问题。
为实现上述目的，在本申请一些实施例中，提供一种救援车钩，结构如下：
一种救援车钩，包括钩主体，所述钩主体两端分别设置有第一端连挂机构和第二端连挂机构，所述第二端连挂机构包括：
第一侧支撑：沿所述钩主体向第二端方向延伸；
第二侧支撑：沿所述钩主体向所述第二端方向延伸，设置在所述第一侧支撑的相对侧；
钩尾销：设置在所述第一侧支撑与所述第二侧支撑之间；
所述钩主体、所述第一侧支撑、所述第二侧支撑及所述钩尾销之间呈开放间隙，以使链子钩挂钩可经所述间隙与所述钩尾销挂装。
在本申请一些实施例中，所述挂钩包括主体段和钩头，所述钩头处设置有钩槽，经所述钩槽挂装在所述钩尾销上，所述钩槽包括：
第一弧面段：与所述主体段相接，沿所述主体段向所述钩头方向凸出；
第二弧面段：与所述第一弧面段相接，且与所述第一弧面段凸出方向相反，且相对向所述钩槽深度方向及宽度方向延伸；
第三弧面段：与所述第二弧面段相接，且沿所述第二弧面段相对向所述钩槽深度相反的方向延伸；
所述钩槽与所述钩尾销挂装后，所述钩尾销位于所述第二弧面段内。
在本申请一些实施例中，所述第一侧支撑和所述第二侧支撑之间设置有第一基体，所述第一基体被配置为，所述挂钩绕所述钩尾销连挂后，可与所述挂钩伸出侧接触。
在本申请一些实施例中，所述救援车钩进一步包括第二基体，与所述第一基体呈间隔设置在所述钩主体上，所述第二基体与所述第一基体之间进一步设置有弹性件。
在本申请一些实施例中，所述救援车钩进一步包括连接件，所述连接件 一端与所述第一基体连接，另一端经第二基体穿出，所述连接件经所述第二基体穿出端的头部与所述第二基体之间设置有弹性件。
在本申请一些实施例中，所述救援车钩进一步包括第二基体，与所述第一基体呈间隔设置在所述钩主体上；所述救援车钩进一步包括连接件，所述连接件一端与所述第一基体连接，另一端经所述第二基体穿出，所述连接件经所述第二基体穿出端的头部与所述第二基体之间设置有弹性件。
在本申请一些实施例中，所述第一侧支撑和所述第二侧支撑之间设置有第一基体，所述第一基体被配置为，所述挂钩绕所述钩尾销连挂后，可与所述挂钩伸出侧接触。
在本申请一些实施例中，所述救援车钩进一步包括第二基体，与所述第一基体呈间隔设置在所述钩主体上，所述第二基体与所述第一基体之间进一步设置有弹性件。
在本申请一些实施例中，所述救援车钩进一步包括第二基体，与所述第一基体呈间隔设置在所述钩主体上；所述救援车钩进一步包括连接件，所述连接件一端与所述第一基体连接，另一端经所述第二基体穿出，所述连接件经所述第二基体穿出端的头部与所述第二基体之间设置有弹性件。
在本申请一些实施例中，所述第二基体、所述钩尾销的位置被配置为，所述挂钩与所述钩尾销连挂后，所述钩尾销位于所述第一弧面段与所述第二弧面段交界处的钩槽内。
在本申请一些实施例中，所述钩主体包括：第一主体板机构、第二主体板机构、第三主体板机构及第四主体板机构；
所述第一主体板机构与第二主体板机构间隔设置，所述第三主体板机构连接第一主体板机构和第二主体板机构第一侧的间隙，所述第四主体板机构 连接第一主体板机构与第二主体板机构第二侧的间隙，所述第一侧与第二侧相对。
在本申请一些实施例中，所述第一侧支撑与所述第一主体板机构一体，为位于所述第一主体板机构第二端的，沿所述第一主体板机构向所述钩主体第二端方向的延伸段；
所述第二侧支撑与所述第二主体板机构一体，为位于所述第二主体板机构第二端的，沿所述第二主体板机构向所述钩主体第二端方向的延伸段。
在本申请一些实施例中，所述第一主体板机构、所述第二主体板机构、所述第三主体板机构及所述第四主体板机构采用拼焊方式组装。
在本申请一些实施例中，所述第一侧支撑和所述第二侧支撑之间设置有框体，所述框体与所述钩尾销之间的间隙可容置所述挂钩。
较现有技术相比，本申请一些实施例中，提供的车钩的有益效果在于：
(1)本申请实施例所提供的救援车钩，解决了链子钩和密接型车钩兼容连挂的技术问题，通过钩尾销和钩身(第一侧支撑与第二侧支撑夹住链子钩)的作用，使链子钩和救援车钩连挂后能够同时承受拉压载荷。
(2)本实施例所提供的救援车钩，能够围绕链子车钩转动一定角度，以满足有钩高差的连挂及上下坡工况。
(3)本申请实施例所提供的救援车钩，进一步设置有平衡机构，使得救援车钩与链子车钩连挂后能够自动保持平衡，使车钩整体保持水平连挂；连挂动作完成后，车钩在正常拉伸、压缩状态及上下坡的工况下，自平衡机构均为非主要受力部件，处于正常承力状态，自平衡装置的使用寿命长。
(4)本申请实施例所提供的救援车钩，对钩主体的结构进行了优化，采用框架式拼接，形成一种骨架式结构，这种结构组装灵活、重量轻，可以降 低车钩的低头效应，提高车钩整体的便携性和操作性。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为现有技术中链子钩结构示意图；
图2为现有技术中链子钩连挂结构示意图；
图3为本申请实施例的救援车钩的结构示意图；
图4为本申请实施例的救援车钩与链子钩连挂的示意图；
图5为图4中所示的救援车钩与链子钩连挂的俯视图；
图6A为本申请实施例的链子钩挂钩结构示意图；图6B为本申请实施例的链子钩挂钩的立体图一；图6C为本申请实施例的链子钩挂钩的立体图二；
图7为本申请实施例救援车钩与链子钩连挂示意图(拉伸工况)；
图8为本申请实施例救援车钩与链子钩连挂示意图(压缩工况)；
图9为本申请实施例救援车钩与链子钩连挂示意图(救援车钩相对链子钩逆时针转动)；
图10为本申请实施例救援车钩与链子钩连挂示意图(救援车钩相对链子钩顺时针转动)；
图11为本申请另一实施例的救援车钩与链子车钩连挂示意图；
以上各图中：
1、钩主体；101、第一主体板机构；102、第二主体板机构；103、第三主体板机构；104、第四主体板机构；105、减重孔；11、第一端连挂机构； 12-第二端连挂机构；1201、第一侧支撑；1202、第二侧支撑；1203、钩尾销；2、链子钩挂钩；21钩头；22、主体段；23、钩槽；2301、第一弧面段；2302、第二弧面段；2303、第三弧面段；3、第一基体；4、第二基体；5、弹性件；6、连接件；61、第一连接杆；62、第二连接杆；7、螺栓；8、止挡件；9、把手；10、框体。
具体实施方式
为了使本申请所要解决的技术问题、技术方案及有益效果更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
需要说明的是，当元件被称为“设置在”，“连接”另一个元件，它可以直接在另一个元件上或者间接在该另一个元件上。当一个元件被称为是“连接于”另一个元件，它可以是直接连接到另一个元件或间接连接至该另一个元件上。
需要理解的是，术语“上”、“下”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
需要说明的是，术语“第一”、“第二”、“第三”、“第四”仅用于描述目的，不用于暗指相对重要性。
本申请实施例提供一种救援车钩，可用于链子车钩与其他型号车钩的转接连挂，解决现有技术中机车链子车钩不能与待救援车辆直接连挂的问题，该救援车钩可用于拖车、救援等作业。
如图3、图4所示，本申请实施例的救援车钩包括钩主体1，钩主体1两 端分别设置有第一端连挂机构11和第二端连挂机构12。
第一端连挂机构11用于与待救援车辆车钩的连挂，其结构根据待救援车辆车钩的类型设计，例如，与10型车钩连挂，则第一端连挂机构11包括钩头、钩舌、连挂杆等结构，这部分属于现有技术，不再赘述。
第二端连挂机构12用于与机车链子车钩的连挂，包括：
第一侧支撑1201，沿钩主体1向第二端方向延伸，所述第二端方向为远离待救援车辆的方向；
第二侧支撑1202：沿钩主体1向第二端方向延伸，设置在第一侧支撑1201的相对侧；
钩尾销1203：第一侧支撑1201与第二侧支撑1202呈间隙设置，钩尾销1203设置在二者之间，连接第一侧支撑1201与第二侧支撑1202。具体的，第一侧支撑1201与第二侧支撑1202上均设置有钩尾销安装孔，钩尾销1203插装在所述安装孔内；
钩主体1、第一侧支撑1201、第二侧支撑1202及钩尾销1203之间呈开放间隙，以使链子钩挂钩可经间隙与钩尾销1203挂装。
具体的，第一侧支撑1201和第二侧支撑1202均呈板状，这两部分相对钩主体1独立地向第二端方向延伸，相对钩主体1其他部位，两侧支撑之间限制出一个独立的间隙。安装钩尾销1203后，钩尾销1203与钩主体1之间进一步限定这个间隙。如图4和图5所示，安装链子钩时，将挂钩2挂在钩尾销1203上，钩尾销1203和钩主体1之间的间隙可以使挂钩2顺利地挂在钩尾销1203上。
基于以上实施例的结构，救援车钩的第一端连挂机构11与待救援车辆的车钩连接，第二端连挂机构12与机车链子钩连接，从而机车可拖运待救援车 辆。
在本申请一些实施例中，如图6A-图6C所示，所述链子钩挂钩2包括主体段22和钩头21，主体段22呈杆状，与救援机车连接，其钩头21处设置有钩槽23，经钩槽23挂装在钩尾销1203上，所述钩槽23包括：
第一弧面段2301：位于靠近主体段22一侧，与主体段22相接，沿主体段22向钩头21方向凸出，向钩槽23深度方向及宽度方向延伸，即，第一弧面段2301形成一种向外侧突出的弧形结构；
第二弧面段2302：与第一弧面段2301相接，且与第一弧面段2301凸出方向相反，且相对向钩槽深度方向及宽度方向延伸；
第三弧面段2303：与第二弧面段2302相接，且沿第二弧面段2302相对向钩槽深度及宽度相反的方向延伸。
图7示出了拉伸工况下钩尾销1203在钩槽23内的状态，当承受拉伸载荷时，救援车钩整体向前运动与钩槽23的前端接触；图8示出了压缩工况下钩尾销1203在钩槽23内的状态，压缩载荷会出现在与待救援车辆车钩的连挂过程及连挂后的运营过程，当承受压缩载荷时，救援车钩整体向后运动与钩槽23的后端接触。该结构使得救援车钩和链子车钩的连挂组成体既可以承受拉伸载荷，也可以承受压缩载荷，而无需额外安装其它部件(例如缓冲器)用于承受压缩载荷。此外，第一弧面段2301和第二弧面段2302的交接处形成钩槽腔，钩尾销1203与钩槽腔形成支点结构，使二者之间可相对支点旋转。图9示出了救援车钩相对链子钩逆时针转动时钩尾销1203在钩槽腔内的状态；图10示出了救援车钩相对链子钩顺时针转动时钩尾销1203在钩槽腔内的状态。在可允许的转动范围内，救援车钩可围绕支点转动而不脱钩。由此可见，上述实施例所提供的结构可实现多种不同工况条件下的稳定连接，结构简单。
各弧面段的长度和深度可视需求加工。第一弧面段2301和第二弧面段2302的交接处形成钩槽腔，链子钩和救援车钩连挂后，在救援车钩和链子钩之间相对压缩(参考图8)或相对逆时针转动(参考图9)时，钩尾销1203位于第二弧面2302段内，具体位于第一弧面段2301和第二弧面段2302的交接处的钩槽腔，钩尾销1203与钩槽腔形成支点结构，使二者之间可相对支点旋转。该支点使得救援车钩和链子车钩的连挂组成体可以承受压缩载荷，此种载荷会出现在与待救援车辆车钩的连挂过程及连挂后的运营过程。当承受拉伸载荷时，救援车钩整体向前运动至钩尾销与链子车钩钩腔前端接触，使得救援车钩和链子车钩的连挂组成体能够承受拉伸载荷。
更进一步的，为了保证救援车钩和链子钩的稳定挂装，在本申请一些实施例中，如图4-5和图7-11所示，所述第一侧支撑1201和第二侧支撑1202之间设置有第一基体3，所述第一基体3被配置为，链子钩挂钩2绕钩尾销1203连挂后，可与链子钩挂钩2伸出侧接触。
具体地，以图示的安装方向为例，第一基体3被设置在第一侧支撑1201和第二侧支撑1202的上方，跨接在二者之间。在这种实施例中，第一基体3可固定设置在第一侧支撑1201和第二侧支撑1202之间，挂钩2与钩尾销1203连挂时，从第一侧支撑1201和第二侧支撑1202的下方插入间隙，挂钩2的头部(第三弧面段2303的头部)可抵靠在第一基体3上。如图9所示，当救援车钩钩主体1因自重作用下垂时，挂钩2和钩主体1之间绕钩尾销1203与钩槽腔形成支点的位置相对钩尾销1203旋转，第一基体3对挂钩2产生反作用力，限制二者之间的相对旋转。
在本申请一些实施例中，如图4-5和图7-11所示，所述救援车钩进一步包括第二基体4，与第一基体3呈间隔设置在钩主体1上，第二基体4与第 一基体3均采用板状结构，二者之间配合形成救援车钩与链子钩之间相对转动复位平衡机构，所述平衡机构还包括弹性件，弹性件可采用压簧、碟簧、橡胶弹簧、空气弹簧等，可在救援车钩相对链子钩转动时发生弹性变形，这种变形可以是被拉伸或被压缩，当救援车钩低头时，弹性件变形所产生的反作用，可有效抬高低头的车钩，使车钩整体保持水平连挂。基于该原理，该平衡机构的结构可通过以下两种实施方式实现。
第一种实施方式，参考图11。
所述第一基体3与第二基体4间进一步设置有弹性件5。第二基体4固定设置在钩主体1上，第一基体3通过弹性件5与第二基体4连接，浮动设置在第一侧支撑1201和第二侧支撑1202之间。
弹性件5设置在第一基体3和第二基体4之间，两端分别与第一基体3和第二基体4连接。以附图所示的方向，在救援车钩低头时，救援车钩相对逆时针转动，第一基体3与链子钩挂钩4之间产生力的作用，弹性件5被拉伸。弹簧5的拉伸力反作用于救援车钩，可限制救援车钩的低头。
第二种实施方式，参考图4。
在本申请一些实施例中，所述救援车钩进一步包括连接件6，连接件6一端与第一基体3连接，另一端经第二基体4穿出，连接件6经第二基体4穿出端的头部与第二基体4之间设置有所述弹性件5。第二基体4固定设置在钩主体1上，第一基体3通过连接件6与第二基体4连接，浮动设置在第一侧支撑1201和第二侧支撑1202之间。
具体的，连接件6可采用的为连接杆，弹性件5采用的为弹簧，在第二基体4上设置连接件孔，连接杆6一端经第二基体4身上的连接件孔穿出，在第一基体3上也设置有连接件孔，连接杆6的另一端经第一基体3上的连 接件孔穿出，穿出端被固定螺栓7固定。连接杆6经第二基体4伸出的一端设置有止挡件8，弹性件5安装在连接杆6经第二基体4的伸出端，可采用多种形式与连接杆6连接，本实施例中弹性件5套装在连接杆6上，位于止挡件8和第二基体4之间。以附图所示的方向，在救援车钩低头时，如图9所示，救援车钩相对逆时针转动，第一基体3与链子钩挂钩2之间产生力的作用，第一基体3相对向钩身后侧运动，拉动连接杆6运动，弹性件5被压缩。弹性件5的压缩力反作用于救援车钩，可限制救援车钩的低头。
在本申请一些实施例中，所述连接件6包括第一连接件和第二连接件，对称设置在钩身轴线方向的两侧，每个连接件上均配置有所述弹性件5。具体说，对于采用连接杆作为连接件的结构，如图5所示，连接杆包括两个，分别为第一连接杆61和第二连接杆62，两个连接杆对称设置在钩主体1轴线方向的两侧，每个连接杆上均套装有弹性件5，挂钩2从第一连接杆61和第二连接杆62之间的间隙之间穿出。设置多组连接件结构可以增强平衡机构的平衡作用力，保证平衡效果。
连挂动作完成后，车钩在正常拉伸、压缩状态及上下坡的工况下，自平衡机构均为非主要受力部件，处于正常承力状态，自平衡装置的使用寿命长。平衡机构作用时，钩尾销1203仍在第一弧面段2301与第二弧面段2302交界处的钩槽腔形成的支点内转动。
参考图3，本申请提供的救援车钩，钩主体1采用的为框架式拼接，形成一种骨架式结构，这种结构组装灵活、重量轻。具体的，在本申请一些实施例中，所述钩主体1包括：第一主体板机构101、第二主体板机构102、第三主体板机构103及第四主体板机构104。
第一主体板机构101与第二主体板机构102间隔设置，第三主体板机构 103连接第一主体板机构101和第二主体板机构102第一侧的间隙，第四主体板机构104连接第一主体板机构101与第二主体板机构102第二侧的间隙，第一侧与第二侧相对。第一主体板机构101、第二主体板机构102、第三主体板机构103及第四主体板机构104采用拼焊方式组装，形成中空框架式结构。这种结构具有轻量化的特点，相对重量化车钩，可以降低车钩的低头效应。在减重的同时亦满足强度要求，提高车钩整体的便携性和操作性。
各主体板机构的具体形状视与第一端连挂机构11和第二端连挂机构12的配合结构而定，例如，仍以与10号车钩适配为例，各主体板机构组装后需可与钩主体1的钩头端适配拼接。更进一步的，为例实现更好的适配拼接效果，各主体板机构可采用单板加工而成，也可以进一步采用多板拼接而成。
在本申请一些实施例中，所述第一侧支撑1201与第一主体板机构101一体，为位于第一主体板机构101第二端的，沿第一主体板机构101向钩主体1第二端方向的延伸段；
所述第二侧支撑1202与第二主体板机构102一体，为位于第二主体板机构102第二端的，沿第二主体板机构102向钩主体1第二端方向的延伸段。
除采用一体式的结构外，两侧的支撑结构也可以采用与相应侧的主体板机构拼接的形式。
在本申请一些实施例中，为了进一步减轻钩主体1的重量，可在各主体板机构适当的部位加工减重孔105。
为了进一步方便救援车钩的安装，在钩主体1上设置有把手9，本实施例中，把手9被设置在第一主体板机构101和第二主体板机构102上。
在本申请一些实施例中，所述第一侧支撑1201和所述第二侧支撑1202之间设置有框体10，所述框体10与钩尾销1203之间的间隙可容置所述挂钩 2。框体10位于与第二基体3相对的一侧，所述框体10与钩尾销1203之间形成的间距被配置为，可以使适配车钩的挂钩2在框体10与钩尾销1203之间的间隙内穿过。参考附图，第一基体3和第二基体4位于链子钩的穿出侧，框体10位于链子钩的穿入侧。框体10的主要作用在于防止链子钩脱钩。由于链子钩和钩尾销1203之间仅仅是连挂结构，挂钩2会存在脱出钩尾销1203的风险，框体10的结构可以限制链子钩的脱钩运动。具体的，框体10与钩尾销1203对齐设置，在图示方向中，位于钩尾销1203轴线的正下方。防跳框体10可以是与第一侧支撑1201和所述第二侧支撑1202一体加工而成的U型结构，也可以是与第一侧支撑1201和所述第二侧支撑1202可拆装的U型结构。
本申请提供的救援车钩通过钩尾销的作用，连挂后能够使救援车钩和链子车钩的连挂组成体同时承受拉压载荷，解决了适配车钩与链子钩之间的连挂问题。

Claims (14)

  1. 一种救援车钩，其特征在于，包括钩主体，所述钩主体两端分别设置有第一端连挂机构和第二端连挂机构，所述第二端连挂机构包括：
    第一侧支撑：沿所述钩主体向第二端方向延伸；
    第二侧支撑：沿所述钩主体向所述第二端方向延伸，设置在所述第一侧支撑的相对侧；
    钩尾销：设置在所述第一侧支撑与所述第二侧支撑之间；
    所述钩主体、所述第一侧支撑、所述第二侧支撑及所述钩尾销之间呈开放间隙，以使链子钩挂钩可经所述间隙与所述钩尾销挂装。
  2. 如权利要求1所述的救援车钩，其特征在于，所述挂钩包括主体段和钩头，所述钩头处设置有钩槽，经所述钩槽挂装在所述钩尾销上，所述钩槽包括：
    第一弧面段：与所述主体段相接，沿所述主体段向所述钩头方向凸出；
    第二弧面段：与所述第一弧面段相接，且与所述第一弧面段凸出方向相反，且相对向所述钩槽深度方向及宽度方向延伸；
    第三弧面段：与所述第二弧面段相接，且沿所述第二弧面段相对向所述钩槽深度相反的方向延伸；
    所述钩槽与所述钩尾销挂装后，所述钩尾销位于所述第二弧面段内。
  3. 如权利要求1所述的救援车钩，其特征在于，所述第一侧支撑和所述第二侧支撑之间设置有第一基体，所述第一基体被配置为，所述挂钩绕所述钩尾销连挂后，可与所述挂钩伸出侧接触。
  4. 如权利要求3所述的救援车钩，其特征在于，所述救援车钩进一步包括第二基体，与所述第一基体呈间隔设置在所述钩主体上，所述第二基体与 所述第一基体之间进一步设置有弹性件。
  5. 如权利要求3所述的救援车钩，其特征在于，所述救援车钩进一步包括连接件，所述连接件一端与所述第一基体连接，另一端经第二基体穿出，所述连接件经所述第二基体穿出端的头部与所述第二基体之间设置有弹性件。
  6. 如权利要求3所述的救援车钩，其特征在于，所述救援车钩进一步包括第二基体，与所述第一基体呈间隔设置在所述钩主体上；所述救援车钩进一步包括连接件，所述连接件一端与所述第一基体连接，另一端经所述第二基体穿出，所述连接件经所述第二基体穿出端的头部与所述第二基体之间设置有弹性件。
  7. 如权利要求2所述的救援车钩，其特征在于，所述第一侧支撑和所述第二侧支撑之间设置有第一基体，所述第一基体被配置为，所述挂钩绕所述钩尾销连挂后，可与所述挂钩伸出侧接触。
  8. 如权利要求7所述的救援车钩，其特征在于，所述救援车钩进一步包括第二基体，与所述第一基体呈间隔设置在所述钩主体上，所述第二基体与所述第一基体之间进一步设置有弹性件。
  9. 如权利要求7所述的救援车钩，其特征在于，所述救援车钩进一步包括第二基体，与所述第一基体呈间隔设置在所述钩主体上；所述救援车钩进一步包括连接件，所述连接件一端与所述第一基体连接，另一端经所述第二基体穿出，所述连接件经所述第二基体穿出端的头部与所述第二基体之间设置有弹性件。
  10. 如权利要求8或9所述的救援车钩，其特征在于，所述第二基体、所述钩尾销的位置被配置为，所述挂钩与所述钩尾销连挂后，所述钩尾销位于所述第一弧面段与所述第二弧面段交界处的钩槽内。
  11. 如权利要求1所述的救援车钩，其特征在于，所述钩主体包括：第一主体板机构、第二主体板机构、第三主体板机构及第四主体板机构；
    所述第一主体板机构与第二主体板机构间隔设置，所述第三主体板机构连接第一主体板机构和第二主体板机构第一侧的间隙，所述第四主体板机构连接第一主体板机构与第二主体板机构第二侧的间隙，所述第一侧与第二侧相对。
  12. 如权利要求11所述的救援车钩，其特征在于：
    所述第一侧支撑与所述第一主体板机构一体，为位于所述第一主体板机构第二端的，沿所述第一主体板机构向所述钩主体第二端方向的延伸段；
    所述第二侧支撑与所述第二主体板机构一体，为位于所述第二主体板机构第二端的，沿所述第二主体板机构向所述钩主体第二端方向的延伸段。
  13. 如权利要求11所述的救援车钩，其特征在于，所述第一主体板机构、所述第二主体板机构、所述第三主体板机构及所述第四主体板机构采用拼焊方式组装。
  14. 如权利要求1所述的救援车钩，其特征在于，所述第一侧支撑和所述第二侧支撑之间设置有框体，所述框体与所述钩尾销之间的间隙可容置所述挂钩。
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