Crane assembly and device for railway vehicle

Abstract

The utility model provides a crane assembly for a railway vehicle, which comprises a mounting part suitable for being mounted at the bottom of a carriage of the railway vehicle, and an opening is formed in one side, facing the side part of the carriage, of the mounting part; the first end of the pin shaft extends into the mounting part through the opening, and the second end of the pin shaft extends to the outer side of the carriage in the transverse direction, so that the carriage is hoisted by a cable connected to the second end; the limiting part is suitable for being mounted at the bottom of the carriage, the first end of the pin shaft penetrates through the limiting part to be inserted into the opening, and the limiting part is constructed to prevent the pin shaft from being separated from the mounting part. The utility model further provides a crane device for the railway vehicle. The crane device comprises a plurality of crane assemblies for the railway vehicle in the embodiment.

Description

Technical Field

[0001] At least one embodiment of the utility model relates to the technical field of rail vehicle crane equipment, and more specifically, to a crane assembly and device for a rail vehicle. Background Art

[0002] In the field of rail transportation, rail vehicles need to be disassembled after production and then transported to the destination city by land or water. Therefore, during transportation, a crane is usually required to transfer the vehicle to a transportation device, such as a ship, train, or car, and secure it. This requires a component that can be installed on the rail vehicle to fix the cable during the lifting process and to secure the car during transportation. This component is not an auxiliary structure of the rail vehicle, but is only used for loading and unloading and fixing the rail vehicle during transportation.

[0003] To this end, the prior art provides a crane assembly for a rail vehicle, which generally uses a suspension seat and fasteners to install a suspension shaft at the bottom of the rail vehicle, and connects a cable to the suspension shaft to lift the rail vehicle.

[0004] However, during the process of lifting the carriage, the existing crane assembly for rail vehicles cannot prevent the lifting shaft from moving in the axial direction relative to the bottom of the carriage, and the lifting shaft is prone to detach from the lifting seat, causing the carriage to fall off during the lifting process, causing danger. Utility Model Content

[0005] In view of this, an embodiment of the utility model provides a crane assembly for a rail vehicle, which prevents the carriage from falling off during the process of lifting the carriage, thereby improving the safety of the lifting operation.

[0006] According to a first aspect of the utility model, a crane assembly for a rail vehicle is provided, comprising: a mounting portion, adapted to be mounted on the bottom of a carriage of the rail vehicle, the mounting portion being provided with an opening on a side facing the side of the carriage; a pin, the first end of the pin extending into the mounting portion through the opening, the second end of the pin extending in a transverse direction to the outside of the carriage so as to lift the carriage by means of a cable connected to the second end; and a limiting portion, adapted to be mounted on the bottom of the carriage, the first end of the pin passing through the limiting portion and inserted into the opening, the limiting portion being configured to prevent the pin from detaching from the mounting portion.

[0007] According to an embodiment of the utility model, the limiting portion includes: a roughly U-shaped support frame, installed on the outside of the pin shaft; two folded edges, respectively formed at the ends of the two support arms of the support frame, each of the folded edges extending in a direction away from the pin shaft, suitable for installing the support frame on the side beam at the bottom of the car body; and a connecting piece, extending upward from the bottom of the support frame into the pin shaft.

[0008] According to an embodiment of the utility model, a through hole is provided at the bottom of the support frame, a positioning hole is provided at the bottom of the pin shaft, and the connecting member passes through the through hole and is inserted into the positioning hole.

[0009] According to an embodiment of the utility model, at least one of the through hole and the positioning hole is a threaded hole, and the connecting member is a bolt combined with the threaded hole.

[0010] According to an embodiment of the utility model, the main body of the pin shaft is constructed as a cylinder with a roughly rectangular cross-section; the second end of the pin shaft is formed with a cylindrical portion, and two facing flanges extending outward in a radial direction are formed at both ends of the cylindrical portion to prevent the cable wrapped around the cylindrical portion from detaching from the pin shaft.

[0011] According to an embodiment of the utility model, the diameter of the cylindrical portion is greater than the diagonal length of the main body, so as to facilitate the winding of the cable on the cylindrical portion.

[0012] According to an embodiment of the utility model, the first end of the pin shaft is bent toward the bottom of the carriage to adapt to the position difference in the height direction formed between the mounting portion and the limiting portion when the mounting portion is mounted on the bottom of the carriage and the limiting portion is mounted on the side beam of the bottom of the carriage.

[0013] According to an embodiment of the utility model, the mounting portion comprises: a base mounted on the bottom of the compartment; and a support frame formed on the base, and the opening is formed on the support frame.

[0014] According to an embodiment of the utility model, the support frame includes: two vertical plates formed on the base facing each other; and a horizontal plate connected between the edges of the two vertical plates away from the base, so that the vertical plates, the horizontal plate and the base surround the opening.

[0015] According to an embodiment of the utility model, a mounting ear is provided on one side of the mounting portion away from the bottom of the carriage, and the mounting ear is suitable for connecting to the bottom of a transport device that transports the carriage to prevent the carriage from moving relative to the transport device.

[0016] The second aspect of the utility model provides a crane device for a rail vehicle, comprising: a plurality of crane assemblies for a rail vehicle as described in the above embodiments, wherein each two of the crane assemblies are mounted facing each other on opposite sides of the bottom of a carriage of the rail vehicle in a lateral direction; and a plurality of cables, respectively mounted on the second ends of the pin shafts of the crane assemblies to lift the carriage.

[0017] According to the crane assembly for rail vehicles of the above embodiment of the utility model, by providing a limit part and installing the limit part on the bottom of the car, the first end of the pin passes through the limit part and is inserted into the opening of the mounting part facing the side of the car to prevent the pin from being separated from the mounting part. In other words, during the process of lifting the car, the pin is prevented from moving in the axial direction and in the longitudinal direction relative to the bottom of the car, preventing the pin from being separated from the mounting part, preventing the car from falling off during the lifting process, and improving the safety of the lifting operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the crane assembly for a rail vehicle and the rail vehicle installed in an embodiment of the utility model;

[0019] Figure 2 is a side view of a crane assembly for a rail vehicle installed on a rail vehicle according to an embodiment of the utility model;

[0020] Figure 3 It is a three-dimensional schematic diagram of a crane assembly for a rail vehicle according to an embodiment of the utility model installed on the bottom of a carriage of the rail vehicle;

[0021] Figure 4 It is a bottom view of a crane assembly for a rail vehicle according to an embodiment of the utility model installed on the bottom of a carriage of the rail vehicle;

[0022] Figure 5 It is a three-dimensional assembly schematic diagram of a crane assembly for a rail vehicle according to an embodiment of the utility model;

[0023] Figure 6 It is a three-dimensional schematic diagram of a limiting part of a crane assembly for a rail vehicle according to an embodiment of the utility model;

[0024] Figure 7 is a three-dimensional schematic diagram of a pin shaft of a crane assembly for a rail vehicle according to an embodiment of the utility model; and

[0025] Figure 8 It is a three-dimensional schematic diagram of a mounting portion of a crane assembly for a rail vehicle according to an embodiment of the utility model.

[0026] In the figure:

[0027] 1- Installation part;

[0028] 11-Opening;

[0029] 12-base; 121-second combining member;

[0030] 13-support frame; 131-vertical plate; 132-horizontal plate; 133-side plate;

[0031] 14-mounting ear; 141-connection hole;

[0032] 15- third mounting hole;

[0033] 2-rail vehicle; 21-carriage; 22-side beam;

[0034] 3-pin shaft; 31-first end; 32-second end; 33-cylindrical portion; 34-flange; 35-positioning hole; 36-main body;

[0035] 4-limiting part;

[0036] 41-support frame; 411-support arm; 412-through hole;

[0037] 42- folded edge; 421- first mounting hole; 422- first combining member;

[0038] 43-connecting piece;

[0039] 5- Cable. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0041] However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present invention. However, it is apparent that one or more embodiments may be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0042] The terms used herein are only for describing specific embodiments and are not intended to limit the present invention. The terms "include", "comprises", etc. used herein indicate the existence of the features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0043] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0044] According to the inventive concept of one aspect of the utility model, a crane assembly for a rail vehicle is provided, comprising: a mounting portion, suitable for being mounted on the bottom of a car body of the rail vehicle, the mounting portion having an opening on one side facing the side of the car body; a pin shaft, the first end of the pin shaft extending into the mounting portion through the opening, the second end of the pin shaft extending to the outside of the car body in a lateral direction so as to lift the car body by means of a cable connected to the second end; and a limiting portion, suitable for being mounted on the bottom of the car body, the first end of the pin shaft passing through the limiting portion and inserted into the opening, the limiting portion being configured to prevent the pin shaft from detaching from the mounting portion.

[0045] Figure 1 It is a front view of the crane assembly for a rail vehicle and the rail vehicle installed in an embodiment of the utility model; Figure 2 is a side view of a crane assembly for a rail vehicle installed on a rail vehicle according to an embodiment of the utility model; Figure 3 It is a three-dimensional schematic diagram of a crane assembly for a rail vehicle according to an embodiment of the utility model installed on the bottom of a carriage of the rail vehicle; Figure 4 The utility model is a bottom view of a crane assembly for a rail vehicle according to an embodiment of the present invention installed on the bottom of a carriage of the rail vehicle.

[0046] According to the exemplary embodiment of the present invention, please refer to Figure 1-Figure 4 , a crane assembly for a rail vehicle is provided, comprising a mounting portion 1, a pin shaft 3 and a stopper 4. The mounting portion 1 is suitable for mounting at the bottom of a carriage 21 of a rail vehicle 2, and an opening 11 is provided on one side of the mounting portion 1 facing the side of the carriage 21. The first end 31 of the pin shaft 3 extends into the mounting portion 1 through the opening 11, and the second end 32 of the pin shaft 3 extends to the outside of the carriage 21 in the lateral direction, so as to lift the carriage 21 by using a cable 5 connected to the second end 32. The stopper 4 is suitable for mounting at the bottom of the carriage 21, and the first end 31 of the pin shaft 3 passes through the stopper 4 and is inserted into the opening 11, and the stopper 4 is configured to prevent the pin shaft 3 from being separated from the mounting portion 1.

[0047] In this embodiment, by providing the stopper 4 and installing the stopper 4 at the bottom of the carriage 21, the first end 31 of the pin 3 passes through the stopper 4 and is inserted into the opening 11 of the mounting portion 1 on the side facing the side of the carriage 21, so as to prevent the pin 3 from being separated from the mounting portion 1. In other words, in the process of lifting the carriage 21 by using a crane, the pin 3 is prevented from moving in the axial direction and in the longitudinal direction relative to the bottom of the carriage 21, so as to prevent the pin 3 from being separated from the mounting portion 1, and to prevent the carriage 21 from falling off during the lifting process, thereby improving the safety of the lifting operation.

[0048] It should be noted that, in the present embodiment, the longitudinal direction refers to the traveling direction of the rail vehicle, that is, the length direction of the carriage 21 , and the transverse direction refers to the width direction of the carriage 21 .

[0049] Figure 5 It is a three-dimensional assembly schematic diagram of a crane assembly for a rail vehicle according to an embodiment of the utility model; Figure 6 It is a three-dimensional schematic diagram of a limiting portion of a crane assembly for a rail vehicle according to an embodiment of the utility model.

[0050] In some exemplary embodiments, referring to Figure 3-Figure 6 The limiting portion 4 includes a substantially U-shaped support frame 41, two folded edges 42, and a connecting member 43. The substantially U-shaped support frame 41 is mounted outside the pin shaft 3. The two folded edges 42 are respectively formed at the ends of two support arms 411 of the support frame 41. Each folded edge 42 extends in a direction away from the pin shaft 3, and is suitable for mounting the support frame 41 on the side beam 22 at the bottom of the carriage 21. The connecting member 43 extends upward from the bottom of the support frame 41 into the pin shaft 3.

[0051] In this embodiment, each folded edge 42 is provided with a first mounting hole 421, and the side beam 22 at the bottom of the carriage 21 is provided with a second mounting hole (not shown in the figure), and the first coupling member 422 is inserted into the second mounting hole through the first mounting hole 421 to mount the folded edge 42 on the side beam 22 at the bottom of the carriage 21, thereby mounting the support frame 41 on the side beam 22 at the bottom of the carriage 21. Both the first mounting hole 421 and the second mounting hole are threaded holes, and the first coupling member 422 is a bolt coupled to the first mounting hole 421 and the second mounting hole.

[0052] Furthermore, the support frame 41 is installed outside the pin shaft 3 to limit the pin shaft 3 in the longitudinal direction, so as to prevent the pin shaft 3 from moving in the longitudinal direction relative to the carriage 21 .

[0053] In some exemplary embodiments, referring to Figure 3-Figure 6A through hole 412 is provided at the bottom of the support frame 41, and a positioning hole 35 aligned with the through hole 412 is provided at the bottom of the pin shaft 3. The connecting member 43 passes through the through hole 412 and is inserted into the positioning hole 35, so that during the process of lifting the carriage 21, the pin shaft 3 is prevented from moving in the axial direction relative to the bottom of the carriage 21, thereby preventing the pin shaft 3 from detaching from the mounting portion 1.

[0054] In some exemplary embodiments, referring to Figure 3-Figure 6 At least one of the through hole 412 and the positioning hole 35 is a threaded hole, and the connecting member 43 is a bolt coupled to the threaded hole. After the pin shaft 3 is inserted into the limiting portion 4 and the mounting portion 1, the bolt used as the connecting member 43 is threadedly coupled to the through hole 412 and the positioning hole 35, thereby fixing the pin shaft 3 to the limiting portion 4 and the mounting portion 1.

[0055] Figure 7 It is a three-dimensional schematic diagram of a pin shaft of a crane assembly for a rail vehicle according to an embodiment of the utility model.

[0056] In some exemplary embodiments, referring to Figure 3-Figure 5 as well as Figure 7 The main body 36 of the pin shaft 3 is configured as a cylinder with a substantially rectangular cross section. The second end 32 of the pin shaft 3 is formed with a cylindrical portion 33, and two flanges 34 facing and spaced apart from each other and extending outward in the radial direction are formed at both ends of the cylindrical portion 33 to prevent the cable 5 wound around the cylindrical portion 33 from escaping from the pin shaft 3.

[0057] Through the above-mentioned arrangement, when the cable 5 is wound around the cylindrical part 33, the cable 5 is blocked by the two flanges 34 along the axial direction of the cylindrical part 33. During the process of lifting the car 21, the cable 5 is prevented from detaching from the cylindrical part 33, thereby preventing the cable 5 wound around the cylindrical part 33 from detaching from the pin shaft 3, thereby improving the safety of the lifting operation.

[0058] In some exemplary embodiments, referring to Figure 3-Figure 5 as well as Figure 7 The diameter of the cylindrical portion 33 is greater than the diagonal length of the main body 36 of the pin shaft 3 , that is, the cylindrical portion 33 has a larger cross-sectional area than the main body 36 , so as to facilitate the cable 5 to be wound around the cylindrical portion 33 .

[0059] Through the above arrangement, the cylindrical portion 33 is adapted to the rigidity of the cable 5 , making it easy for the cable 5 to be wound around the cylindrical portion 33 .

[0060] In some exemplary embodiments, referring to Figure 3-Figure 5 as well as Figure 7The first end 31 of the pin shaft 3 is bent toward the bottom of the carriage 21 to adapt to the position difference formed in the height direction between the mounting portion 1 and the limiting portion 4 when the mounting portion 1 is installed at the bottom of the carriage 21 and the limiting portion 4 is installed on the bottom side beam 22 of the carriage 21.

[0061] In this embodiment, since the side beam 22 protrudes from the bottom of the car body 21, there is a position difference in the height direction between the side beam 22 and the bottom of the car body 21. The first end 31 of the pin shaft 3 is bent toward the bottom of the car body 21 to adapt to the position difference in the height direction formed between the mounting portion 1 and the limiting portion 4 when the mounting portion 1 is installed at the bottom of the car body 21 and the limiting portion 4 is installed on the side beam 22 at the bottom of the car body 21, thereby facilitating assembly.

[0062] Figure 8 It is a three-dimensional schematic diagram of a mounting portion of a crane assembly for a rail vehicle according to an embodiment of the utility model.

[0063] In some exemplary embodiments, referring to Figure 3-Figure 5 as well as Figure 8 The mounting portion 1 includes a base 12 and a support frame 13. The base 12 is mounted on the bottom of the carriage 21. The support frame 13 is formed on the base 12, and the opening 11 is formed on the support frame 13.

[0064] In this embodiment, the base 12 is provided with a third mounting hole 15, the bottom of the carriage 21 is provided with a fourth mounting hole (not shown in the figure), and the second coupling member 121 is inserted into the fourth mounting hole through the third mounting hole 15 to mount the base 12 on the bottom of the carriage 21, thereby mounting the mounting portion 1 on the bottom of the carriage 21. The third mounting hole 15 and the fourth mounting hole are both threaded holes, and the second coupling member 121 is a bolt coupled to the third mounting hole 15 and the fourth mounting hole.

[0065] In the present embodiment, the base 12 is configured as a substantially rectangular flat plate.

[0066] It should be noted that in the present embodiment, the mounting portion 1 is one of the main bearing structures. To ensure that after the mounting portion 1 is installed at the bottom of the carriage 21, the mounting portion 1 can fit tightly against the bottom of the carriage 21, it is necessary to ensure that the installation position at the bottom of the carriage 21 for installing the mounting portion 1 and the base 12 have good flatness.

[0067] In some exemplary embodiments, referring to Figure 3-Figure 5 as well as Figure 8 The support frame 13 includes two vertical plates 131 and a horizontal plate 132. The two vertical plates 131 are formed on the base 12 facing each other. The horizontal plate 132 is connected between the edges of the two vertical plates 131 away from the base 12, so that the vertical plates 131, the horizontal plate 132 and the base 12 enclose the opening 11.

[0068] In this embodiment, the support frame 13 further includes a side plate 133 , and the side plate 133 is connected between the edges of the two vertical plates 131 away from the side of the carriage 21 .

[0069] In some exemplary embodiments, referring to Figure 3-Figure 5 as well as Figure 8 A mounting ear 14 is provided on one side of the mounting portion 1 away from the bottom of the carriage 21 , and the mounting ear 14 is suitable for connecting with the bottom of the transport equipment that transports the carriage 21 to prevent the carriage 21 from moving relative to the transport equipment.

[0070] In this embodiment, the mounting ear 14 is provided with a connection hole 141, and the transport equipment is provided with an assembly hole (not shown in the figure), and the assembly part (not shown in the figure) is inserted into the assembly hole through the connection hole 141 to connect the mounting ear 14 to the bottom of the transport equipment. The connection hole 141 and the assembly hole are both threaded holes, and the assembly part is a bolt combined with the connection hole 141 and the assembly hole.

[0071] It should be noted that, in this embodiment, the transportation equipment may be a ship, a train, a car, etc.

[0072] In addition, the crane assembly for rail vehicles of this embodiment also has the advantages of simple structure, no damage to the rail vehicle body, easy installation and disassembly, reusability, high rigidity, and ensuring the safety of vehicle lifting and transportation.

[0073] According to the exemplary embodiment of the present invention, please refer to Figure 1-Figure 2 , a crane device for a rail vehicle is provided, comprising a plurality of crane assemblies for rail vehicles as described in the above embodiments and a plurality of cables 5. Every two crane assemblies are mounted facing each other on opposite sides of the bottom of a carriage 21 of a rail vehicle 2 in a transverse direction. The plurality of cables 5 are respectively mounted on the second ends 32 of the pins 3 of the crane assemblies to lift the carriage 21.

[0074] In this embodiment, a plurality of crane assemblies are installed at the bottom of the car 21 of the rail vehicle 2, and every two crane assemblies are installed facing each other on opposite sides of the bottom of the car 21 of the rail vehicle 2 in the lateral direction. In the process of lifting the car 21, the pin shaft 3 is prevented from moving in the axial direction relative to the bottom of the car 21, and the pin shaft 3 is prevented from detaching from the mounting portion 1, so that the car 21 is prevented from falling off during the lifting process, thereby improving the safety of the lifting operation.

[0075] So far, the embodiments of the utility model have been described in detail in conjunction with the accompanying drawings. It should be noted that the implementation methods not shown or described in the drawings or the body of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of each component are not limited to the various specific structures, shapes or methods mentioned in the embodiments, and ordinary technicians in the field can simply change or replace them.

[0076] It will be understood by those skilled in the art that the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways, even if such combinations and / or combinations are not explicitly described in the present invention. In particular, the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways without departing from the spirit and teachings of the present invention. All of these combinations and / or combinations fall within the scope of the present invention.

[0077] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A crane assembly for a rail vehicle, characterized in that: include: A mounting portion (1) adapted to be mounted on the bottom of a carriage (21) of the rail vehicle (2), wherein an opening (11) is provided on a side of the mounting portion (1) facing the side of the carriage (21); A pin shaft (3), wherein a first end (31) of the pin shaft (3) extends into the mounting portion (1) through the opening (11), and a second end (32) of the pin shaft (3) extends in a transverse direction to the outside of the carriage (21), so as to lift the carriage (21) by using a cable (5) connected to the second end (32); and The limiting portion (4) is suitable for being installed at the bottom of the carriage (21), the first end (31) of the pin shaft (3) passes through the limiting portion (4) and is inserted into the opening (11), and the limiting portion (4) is configured to prevent the pin shaft (3) from being separated from the mounting portion (1).

2. The crane assembly for a rail vehicle according to claim 1, characterized in that: The limiting portion (4) comprises: A substantially U-shaped support frame (41) mounted outside the pin shaft (3); Two folded edges (42) are respectively formed at the ends of two support arms (411) of the support frame (41), each of the folded edges (42) extending in a direction away from the pin shaft (3), and are suitable for mounting the support frame (41) on a side beam (22) at the bottom of the carriage (21); and A connecting piece (43) extends upward from the bottom of the support frame (41) into the pin shaft (3).

3. The crane assembly for a rail vehicle according to claim 2, characterized in that: The bottom of the support frame (41) is provided with a through hole (412), the bottom of the pin shaft (3) is provided with a positioning hole (35), and the connecting member (43) passes through the through hole (412) and is inserted into the positioning hole (35).

4. The crane assembly for a rail vehicle according to claim 3, characterized in that: At least one of the through hole (412) and the positioning hole (35) is a threaded hole, and the connecting member (43) is a bolt combined with the threaded hole.

5. The crane assembly for a rail vehicle according to claim 1, characterized in that: The main body (36) of the pin shaft (3) is configured as a cylinder with a substantially rectangular cross section; The second end (32) of the pin shaft (3) is formed with a cylindrical portion (33), and two ends of the cylindrical portion (33) are formed with two facing flanges (34) extending outward in a radial direction to prevent the cable (5) wound on the cylindrical portion (33) from escaping from the pin shaft (3).

6. The crane assembly for a rail vehicle according to claim 5, characterized in that: The diameter of the cylindrical portion (33) is greater than the diagonal length of the main body (36), so as to facilitate the winding of the cable (5) around the cylindrical portion (33).

7. The crane assembly for a rail vehicle according to claim 5, characterized in that: The first end (31) of the pin shaft (3) is bent toward the bottom of the carriage (21) so as to adapt to the position difference formed in the height direction between the mounting portion (1) and the limiting portion (4) when the mounting portion (1) is mounted on the bottom of the carriage (21) and the limiting portion (4) is mounted on the bottom side beam (22) of the carriage (21).

8. The crane assembly for a rail vehicle according to claim 1, characterized in that: The mounting portion (1) comprises: A base (12) mounted on the bottom of the carriage (21); and A support frame (13) is formed on the base (12), and the opening (11) is formed on the support frame (13).

9. The crane assembly for a rail vehicle according to claim 8, characterized in that: The support frame (13) comprises: Two vertical plates (131) are formed on the base (12) facing each other; and The transverse plate (132) is connected between the edges of the two vertical plates (131) away from the base (12), so that the vertical plates (131), the transverse plate (132) and the base (12) enclose the opening (11).

10. The crane assembly for a rail vehicle according to any one of claims 1 to 9, characterized in that: A mounting ear (14) is provided on a side of the mounting portion (1) away from the bottom of the carriage (21); the mounting ear (14) is suitable for connecting to the bottom of a transport device for transporting the carriage (21) to prevent the carriage (21) from moving relative to the transport device.

11. A crane device for a rail vehicle, characterized in that: include: A plurality of crane assemblies for rail vehicles according to any one of claims 1 to 10, wherein each two of the crane assemblies are mounted facing each other on opposite sides of the bottom of the carriage (21) of the rail vehicle (2) in the transverse direction; as well as A plurality of cables (5) are respectively installed on the second ends (32) of the pin shafts (3) of the crane assembly to lift the carriage (21).

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