CN113022633A

CN113022633A - Rescue car coupler

Info

Publication number: CN113022633A
Application number: CN202010883148.XA
Authority: CN
Inventors: 葛杰; 段书华; 任帅
Original assignee: CRRC Qingdao Sifang Rolling Stock Research Institute Co Ltd; Qingdao SRI Technology Co Ltd
Current assignee: CRRC Qingdao Sifang Rolling Stock Research Institute Co Ltd; Qingdao SRI Technology Co Ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-06-25
Also published as: WO2022042404A1

Abstract

The invention provides a rescue car coupler which comprises a hook main body, wherein a first end coupling mechanism and a second end coupling mechanism are respectively arranged at two ends of the hook main body, and the second end coupling mechanism comprises: a first side support extending along the hook body in a direction toward the second end; and a second side support: extending along the hook body in the direction of the second end and arranged at the opposite side of the first side support; hooking a tail pin: disposed between the first side support and the second side support; the hook main body, the first side support, the second side support and the coupler tail pin are in an open gap, so that the chain hook can be hung with the coupler tail pin through the gap. The rescue car coupler provided by the invention solves the technical problem that a chain hook and a tight-lock type car hook are compatible to be connected.

Description

Rescue car coupler

Technical Field

The invention relates to the technical field of railway vehicle couplers, in particular to a coupler for transition.

Background

The rescue car coupler is an important device for train rescue, and in the field of European rail vehicles, the application of a locomotive rescue car coupler provided with a chain car coupler, in particular a 10-type car coupler train, is very common.

In the prior art, the chain coupler is only coupled with the chain coupler and is realized through a chain 1401. When the zipper is hung, the zipper 1401 at the side is hung in the hook cavity of the zipper at the opposite side. This method can only withstand the tension condition. When the pressure is applied, the side buffers 13 are required to be arranged on both sides of the train, as shown in fig. 1 and 2, but the side buffers 13 are not arranged on both sides of the normal train, and the chain coupler and the 10-type coupler cannot be connected. In order to solve the rescue problem, a transition device, namely a rescue car coupler, needs to be added in the middle. The problem that rescue coupling needs to solve: 1. and meanwhile, the chain coupler and the 10-type or other tight-lock coupler are matched for rescue. And can automatically keep balance after being coupled with a chain car coupler so as to be convenient for automatic coupling with a 10-type equal-joint-seal hook side; 2. the chain car coupler and the combined body can bear two working conditions of tension and compression at the same time; 3. the chain car coupler can rotate for a certain angle around the chain car coupler so as to meet the working conditions of coupling with a hook height difference and going up and down a slope.

Disclosure of Invention

The invention aims to solve one of the technical problems, provides a transition coupler suitable for being coupled with a chain hook, and solves the problem of coupling and matching of the chain hook of a locomotive and a coupler of a rescue vehicle.

In order to achieve the above object, in some embodiments of the present invention, a rescue coupler is provided, which has the following structure:

the utility model provides a rescue car coupler, its characterized in that, includes the hook main part, hook main part both ends are provided with first end respectively and link to be hung mechanism and second end and link to be hung the mechanism, second end links to be hung the mechanism and includes:

a first side support extending along the hook body in a direction toward the second end;

and a second side support: extending along the hook body in the direction of the second end and arranged at the opposite side of the first side support;

hooking a tail pin: disposed between the first side support and the second side support;

the hook main body, the first side support, the second side support and the coupler tail pin are in an open gap, so that the chain hook can be hung with the coupler tail pin through the gap.

In some embodiments of the present invention, the hook comprises a main body section and a hook head, the hook head is provided with a hook groove, the hook groove is hung on the hook tail pin, and the hook groove comprises:

a first arc surface section: is connected with the main body section and protrudes towards the direction of the hook head along the main body section;

a second arc surface section: the first cambered surface section is connected with the hook groove, the protruding direction of the first cambered surface section is opposite to the protruding direction of the first cambered surface section, and the first cambered surface section extend towards the depth direction and the width direction of the hook groove oppositely;

a third arc surface section: the hook groove is connected with the second cambered surface section and extends along the direction opposite to the depth of the hook groove along the second cambered surface section;

and after the hook groove is hung with the hook tail pin, the hook tail pin is positioned in the second cambered surface section.

In some embodiments of the invention, a second substrate is disposed between the first side support and the second side support, the second substrate being configured to contact the hook extension side after the hook is attached about the hook tail pin.

In some embodiments of the present invention, the rescue coupler further includes a first base disposed on the hook body at a distance from a second base, and an elastic member is further disposed between the first base and the second base.

In some embodiments of the invention, the rescue coupler further comprises a connecting piece, one end of the connecting piece is connected with the second base body, the other end of the connecting piece penetrates through the first base body, and the elastic piece is arranged between the head of the penetrating end of the connecting piece through the first base body and the first base body.

In some embodiments of the present invention, the second substrate and the coupler tail pin are positioned such that the coupler tail pin is located in the coupler slot at the intersection of the first arc-shaped segment and the second arc-shaped segment after the coupler hook is coupled with the coupler tail pin.

In some embodiments of the invention, the hook body comprises: a first main body plate mechanism, a second main body plate mechanism, a third main body plate mechanism and a fourth main 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 with a gap on the first side of the first main body plate mechanism and the second main body plate mechanism, the fourth main body plate mechanism is connected with a gap on the second side of the first main body plate mechanism and the second main body plate mechanism, and the first side is opposite to the second side.

In some embodiments of the invention, the first side support is integral with the first body plate means and is an extension of the first body plate means in a direction towards the second end of the hook body;

the second side support is integral with the second body plate mechanism and is an extension section at a second end of the second body plate mechanism in a direction from the second body plate mechanism to the second end of the hook body.

In some embodiments of the present invention, the first main body panel mechanism, the second main body panel mechanism, the third main body panel mechanism and the fourth main body panel mechanism are assembled by a tailor welding method.

In some embodiments of the present invention, a frame is disposed between the first side support and the second side support, and a gap between the frame and the coupler yoke pin can accommodate the hook.

Compared with the prior art, the car coupler provided by the embodiments of the invention has the beneficial effects that:

the rescue car coupler provided by the invention solves the technical problem that the chain hook and the tight-lock car hook are compatible to be connected, and the chain hook and the rescue car coupler can simultaneously bear tension and compression loads after being connected through the function of the coupler yoke.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic view of a chain hook structure in the prior art;

FIG. 2 is a schematic view of a chain hook coupling structure in the prior art;

FIG. 3 is a schematic view of a transition coupler and chain coupler coupling of the present invention (compression mode);

FIG. 4 is a schematic view of a transition coupler and chain hook coupling of the present invention (in a tension mode);

FIG. 5 is a schematic view of the transition coupler and chain hook coupling of the present invention (the transition coupler rotates counterclockwise relative to the chain hook);

FIG. 6 is a schematic view of the transition coupler and the chain hook coupling of the present invention (the transition coupler rotates clockwise relative to the chain hook);

FIG. 7 is a schematic view of a chain hook structure;

fig. 8 is a schematic structural diagram of a main body of the rescue coupler;

FIG. 9 is a schematic view of a transition coupler and chain hook coupling of the present invention;

FIG. 10 is a schematic view of a transition coupler and chain hook coupling of the present invention;

FIG. 11 is a schematic view of a transition coupler and chain hook coupling of the present invention;

in the above figure:

1-hook body, 101-first body plate mechanism, 1011-first side support, 1012-second side support, 102-second body plate mechanism, 103-third body plate mechanism, 104-fourth body plate mechanism;

2-hook head;

3-hooking a tail pin;

4-chain hook, 401-chain hook head, 4011-first cambered surface section, 4012-second cambered surface section, 4013-third cambered surface section, 402-main body section;

5-a second substrate;

6-a first substrate;

7-an elastic member;

8-a first connecting rod;

9-a second connecting rod;

10-lightening holes;

11-a handle;

12-a frame body;

13-a buffer;

14-chain hook, 1401-chain;

15-bolt;

16-fixing part.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "disposed on," "connected to," another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "upper," "lower," "clockwise," "counterclockwise," and the like are used in an orientation or positional relationship as shown in the drawings for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operated in a particular orientation, and therefore should not be considered as limiting the present invention.

It should be noted that the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not intended to imply relative importance.

The invention provides a rescue car coupler which can be used for switching and coupling a chain car coupler and other types of car couplers and solves the problem that the chain car coupler of a locomotive cannot be directly coupled with a vehicle to be rescued in the prior art. Can be used for the operations of vehicle supporting, rescue and the like.

The rescue car coupler comprises a hook body 1, wherein a first end coupling mechanism and a second end coupling mechanism are respectively arranged at two ends of the hook body 1, and refer to fig. 3 to 6.

The first end coupling mechanism is used for coupling the hook end of the vehicle to be rescued, and the structure of the first end coupling mechanism is designed according to the type of the vehicle hook to be rescued, for example, the first end coupling mechanism is coupled with a 10-type vehicle hook, and the first end coupling mechanism comprises a hook head 2, a hook tongue, a coupling rod and other structures, which belong to the prior art and are not described again.

The second end is linked the linkage that the mechanism was used for with locomotive chain coupling, and the structure includes:

a first side support 1011 extending along the hook body 1 in a second end direction, the second direction being a direction away from the vehicle to be rescued;

second side support 1012: extending in the direction of the second end along the hook body 1, disposed on the opposite side of the first side support 1011;

coupler pin 3: the first side support 1011 and the second side support 1012 are arranged in a clearance way, and the coupler yoke pin 3 is arranged between the first side support 1011 and the second side support 1012 to connect the first side support 1011 and the second side support 1012; specifically, the first side support 1011 and the second side support 1012 are both provided with a coupler yoke pin mounting hole, and the coupler yoke pin 3 is inserted into the mounting holes;

the hook body 1, the first side support 1011, the second side support 1012 and the coupler tail pin 3 are open in a gap therebetween, so that the chain hook 401 can be hung on the coupler tail pin 3 through the gap.

Specifically, the first side support 1011 and the second side support 1012 are both plate-shaped, and these two parts extend toward the second end independently from the hook body 1, and an independent gap is defined between the two side supports with respect to other parts of the hook body 1. This gap is further defined between the coupler tail pin 3 and the hook body 1 after the coupler tail pin 3 is installed. When the chain hook is attached, the hook 401 is hooked on the hook pin 3, and the hook 401 can be smoothly hooked on the hook pin 3 by the gap between the hook pin 3 and the hook body 1.

Based on the structure, the first end coupling mechanism of the transition coupler is connected with the coupler end of the vehicle to be rescued, the second end coupling mechanism is connected with the locomotive, and the locomotive can haul the rescued vehicle.

In some embodiments of the present invention, the chain hook 4 comprises a main body section 402 and a hook head 401, the main body section 402 is rod-shaped and connected to the rescue vehicle, the hook head 401 is provided with a hook slot, and the hook slot is hung on the coupler yoke 3 through the hook slot, and referring to fig. 7, the hook slot comprises:

first arc surface segment 4011: the first arc surface segment 4011 forms an arc structure protruding outwards, and the first arc surface segment is located at one side close to the main body segment 402, is connected with the main body segment 402, protrudes towards the direction of the hook head 401 along the main body segment 402, and extends towards the depth direction and the width direction of the hook groove;

second arc surface segment 4012: is connected with the first cambered surface section 4011, has a protruding direction opposite to that of the first cambered surface section 4011, and relatively extends towards the depth direction and the width direction of the hook groove;

third arc segment 4013: is connected with the second arc surface segment 4012 and extends along the direction opposite to the depth and width of the hook groove relatively to the second arc surface segment 4012;

the length and the depth of each cambered surface section can be processed according to requirements. The joint of the first cambered surface section 4011 and the second cambered surface section 4012 forms a hook groove cavity, after the chain hook is connected with the transition hook, when the transition hook and the chain hook are relatively compressed (refer to fig. 4) or relatively rotate anticlockwise (refer to fig. 5), the coupler yoke key 3 is positioned in the second cambered surface 4012 section, specifically positioned in the hook groove cavity at the joint of the first cambered surface section 4011 and the second cambered surface section 4012, and the coupler yoke key 3 and the hook groove cavity form a fulcrum structure, so that the two parts can rotate relative to a fulcrum. The fulcrum enables the coupling combination body of the transition car coupler and the chain car coupler to bear compressive load, and the load can occur in the coupling process of the transition car coupler and the car coupler of the vehicle to be rescued and the operation process after the coupling. When the transition coupler bears tensile load, the transition coupler integrally moves forwards until the coupler yoke key is contacted with the front end of the coupler cavity of the chain coupler, so that the coupling assembly of the transition coupler and the chain coupler can bear the tensile load.

Further, to ensure a stable attachment of the transition coupler and the chain hook, in some embodiments of the present invention, a second base 5 is disposed between the first side support 1011 and the second side support 1012, the second base 5 being configured to contact the protruding side of the chain hook 4 after the chain hook 4 is attached around the coupler yoke 3. Specifically, taking the illustrated installation orientation as an example, the second substrate 5 is disposed above and bridging the first side support 1011 and the second side support 1012. In such an embodiment, the second substrate 5 may be fixedly disposed between the first side support 1011 and the second side support 1012, and when the hook 4 is coupled with the hook end pin 3, a gap is inserted from below the first side support 1011 and the second side support 1012, and the head of the hook 4 (the head of the third arc segment 4013) may abut on the second substrate 5. When the transition coupler body 1 sags due to the self-weight effect, the hook 4 and the coupler body 1 rotate relative to the coupler yoke key 3 around the position where the coupler yoke key 3 and the coupler groove cavity form a fulcrum, and the second base body 5 generates a reaction force on the hook 4 to limit the relative rotation between the hook 4 and the coupler yoke key.

In some embodiments of the invention, the rescue car coupler further comprises a first base body 6 arranged on the coupler main body 1 at an interval with a second base body 5, the first base body 6 and the second base body 5 both adopt a plate-shaped structure, a relative rotation reset balance mechanism between the transition car coupler and the chain hook is formed by matching the first base body 6 and the second base body 5, the balance mechanism further comprises an elastic part, the elastic part can adopt a compression spring, a disc spring, a rubber spring, an air spring and the like, and can generate elastic deformation when the transition car coupler rotates relative to the chain hook, the deformation can be stretched or compressed, when the transition car coupler is lowered, the reaction generated by the deformation of the elastic part can effectively raise the lowered car coupler, so that the whole car coupler is kept in horizontal coupling. Based on this principle, the structure of the balance mechanism can be realized by the following two embodiments.

First embodiment, refer to fig. 11.

An elastic member 7 is further disposed between the first substrate 6 and the second substrate 5. The first base 6 is fixedly arranged on the hook body 1, and the second base 5 is connected with the first base 6 through an elastic member 7 and is arranged between the first side support 1011 and the second side support 1012 in a floating manner.

The elastic member 7 is disposed between the first base 6 and the second base 5, and both ends are connected to the first base 4 and the second base 5, respectively. In the direction shown in the drawing, when the transition coupler is lowered, the transition coupler rotates anticlockwise relatively, force is generated between the second base body 5 and the chain hook 4, and the elastic piece 7 is stretched. The tension of the spring 7 acts against the transition coupler, and the head of the transition coupler can be limited.

A second embodiment, see fig. 10.

In some embodiments of the present invention, the rescue vehicle hook further comprises a connecting member, one end of the connecting member is connected with the second base body 5, the other end of the connecting member penetrates through the first base body, and the elastic member 7 is arranged between the head of the penetrating end of the connecting member penetrating through the first base body 6 and the first base body. The first base 6 is fixedly arranged on the hook body 1, and the second base 5 is connected with the first base 6 through a connecting piece and is arranged between the first side support 1011 and the second side support 1012 in a floating manner.

Specifically, the connecting rod that the connecting piece can adopt, what the elastic component adopted is the spring, sets up the connecting piece hole on first base member 6, and connecting rod one end is worn out through the connecting piece hole on first base member 6 is on one's body, also is provided with the connecting piece hole on second base member 5, and the other end of connecting rod is worn out through the connecting piece hole on second base member 5, and it is fixed by fixing bolt 15 to wear out the end. The end of the connecting rod extending through the first base body 6 is provided with a stop member 16, and the elastic member 7 is mounted on the end of the connecting rod extending through the first base body 6 and can be connected with the connecting rod 6 in various forms, and the elastic member 7 is sleeved on the connecting rod and is positioned between the stop member and the first base body 6 in the embodiment. In the direction shown in the attached drawing, when the transition coupler is lowered, the transition coupler rotates anticlockwise relatively, force is applied between the second base body 5 and the chain hook 4, the second base body 5 moves towards the rear side of the coupler body 2 relatively, the connecting rod is pulled to move, and the elastic piece 7 is compressed. The compression force of the elastic member 7 is reacted with the transition coupler, and the head of the transition coupler can be limited.

In some embodiments of the present invention, the connecting member includes a first connecting member and a second connecting member symmetrically disposed on two sides of the axis of the hook body, and each connecting member is provided with the elastic member 7. Specifically speaking, to the structure that adopts the connecting rod as the connecting piece, the connecting rod includes two, is head rod 8 and second connecting rod 9 respectively, and two connecting rod symmetries set up in the both sides of 1 axis direction of hook main part, all suit elastic component 7 on every connecting rod, and couple 4 wears out between the clearance between head rod 8 and the second connecting rod 9. The balance acting force of the balance mechanism can be enhanced by arranging a plurality of groups of connecting piece structures, and the balance effect is ensured.

After the coupling action is finished, the self-balancing mechanism is a non-main stressed part under the working conditions of normal stretching and compressing states and up and down slopes of the car coupler, and is in a normal bearing state, and the service life of the self-balancing device is long. When the balance mechanism acts, the coupler yoke key 3 is thrown into a fulcrum formed by a hook groove at the junction of the first arc surface section 4011 and the second arc surface section 4012 to rotate.

Referring to fig. 8, in the transition coupler provided by the present invention, the coupler body 1 is spliced in a frame type to form a frame type structure, which is flexible to assemble and light in weight, and specifically, in some embodiments of the present invention, the coupler body 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 main body plate mechanism 101 and the second main body plate mechanism 102 are arranged at intervals, the third main body plate mechanism 103 is connected with a gap on the first side of the first main body plate mechanism 101 and the second main body plate mechanism 102, the fourth main body plate mechanism 104 is connected with a gap on the second side of the first main body plate mechanism 101 and the second main body plate mechanism 102, and the first side is opposite to the second side. The first main body plate mechanism 101, the second main body plate mechanism 102, the third main body plate mechanism 103 and the fourth main body plate mechanism 104 are assembled in a tailor welding manner to form a hollow frame structure. The structure has the characteristic of light weight, and the head lowering effect of the coupler can be reduced relative to the coupler with heavy weight. The strength requirement is met while the weight is reduced, and the overall portability and operability of the coupler are improved.

The specific shape of each main plate mechanism depends on the matching structure with the first end coupling mechanism and the second end coupling mechanism, for example, still taking the example of matching with the No. 10 car coupler, each main plate mechanism needs to be matched and spliced with the hook head end of the hook main body 1 after being assembled. Furthermore, for example, to achieve a better adaptive splicing effect, each main body plate mechanism can be formed by processing a single plate, and can also be further formed by splicing multiple plates.

In some embodiments of the present invention, the first side support 1011 is integral with the first body panel means 101 and is an extension of the second end of the first body panel means 101 in a direction from the first body panel means 101 to the second end of the hook body 1;

the second side support 1012 is integral with the second body plate mechanism 102 and is an extension of the second body plate mechanism 102 toward the second end of the hook body 1 at the second end of the second body plate mechanism 102.

Besides the integral structure, the supporting structures on two sides can also be spliced with the main body plate mechanisms on the corresponding sides.

In some embodiments of the present invention, to further reduce the weight of the hook body 1, weight-reducing holes 10 may be formed at appropriate portions of each body plate mechanism. To further facilitate the installation of the transitional coupling, a handle 11 is provided on the hook body 1, in this embodiment the handle 11 is provided on the first body plate mechanism 101 and the second body plate mechanism 102.

In some embodiments of the present invention, a frame 12 is disposed between the first side support 1011 and the second side support 1012, and a gap between the frame 12 and the coupler yoke key 3 can accommodate the hook 4. The frame 12 is located on the side opposite the first base body 6, and the distance between the frame 12 and the shank 2 is such that the coupler 10 of the adapter can be inserted into the gap between the frame 9 and the shank. Referring to the drawings, the first base 6 and the second base 5 are located on the outgoing side of the chain hook, and the frame 12 is located on the incoming side of the chain hook 11. The main function of the frame body 12 is to prevent the chain hook 11 from being unhooked. Since only the coupling structure is provided between the chain hook 11 and the coupler yoke 3, the hook 10 may be at risk of coming off the coupler yoke 3, and the structure of the frame 12 may limit the unhooking movement of the chain hook 11. Specifically, the frame 12 is provided in alignment with the coupler pin 3, and is located directly below the axis of the coupler pin 3 in the illustrated direction. The anti-jumping frame 12 may have a U-shaped structure integrally formed with the first side support 1011 and the second side support 1012, or may have a U-shaped structure detachably attachable to the first side support 1011 and the second side support 1012.

The transition car coupler provided by the invention can enable the coupling combination body of the rescue car coupler and the chain car coupler to bear tension and compression loads simultaneously after coupling through the action of the coupler yoke, thereby solving the coupling problem between the adaptive car coupler and the chain hook.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a rescue car coupler, its characterized in that, includes the hook main part, hook main part both ends are provided with first end respectively and link to be hung mechanism and second end and link to be hung the mechanism, second end links to be hung the mechanism and includes:

the first side supports: extending along the hook body in a direction toward the second end;

2. The rescue hook of claim 1, wherein the hook comprises a main body section and a hook head, the hook head is provided with a hook groove, the hook groove is hung on the hook tail pin, and the hook groove comprises:

3. Rescue coupler according to claim 1 or 2, characterized in that a second base body is arranged between the first side support and the second side support, which second base body is configured such that the hook can be brought into contact with the hook overhang side after the hook has been coupled around the coupler yoke key.

4. The rescue coupler of claim 3, further comprising a first base spaced from a second base on the hook body, the first base and the second base further having a resilient member disposed therebetween.

5. The rescue car coupler of claim 3, wherein the rescue car coupler further comprises a connecting piece, one end of the connecting piece is connected with the second base body, the other end of the connecting piece penetrates through the first base body, and the elastic piece is arranged between the head of the penetrating end of the connecting piece, penetrating through the first base body, and the first base body.

6. The rescue coupler of claim 3, 4 or 5, wherein the second base body and the coupler yoke key are arranged in a position that the coupler yoke key is positioned in the coupler slot at the junction of the first cambered section and the second cambered section after the coupler yoke is connected with the coupler yoke key.

7. The rescue coupler of claim 1, wherein the hook body comprises: a first main body plate mechanism, a second main body plate mechanism, a third main body plate mechanism and a fourth main body plate mechanism;

8. The rescue coupler of claim 7, wherein:

the first side support is integrated with the first main body plate mechanism and is an extension section which is positioned at the second end of the first main body plate mechanism and extends towards the direction of the second end of the hook main body along the first main body plate mechanism;

9. The rescue coupler of claim 7 or 8, wherein the first body plate mechanism, the second body plate mechanism, the third body plate mechanism and the fourth body plate mechanism are assembled in a tailor welding manner.

10. The rescue coupler of claim 1, wherein a frame is disposed between the first side support and the second side support, and a gap between the frame and the coupler yoke pin is configured to receive the hook.