Hood lifting appliance for rail transit vehicle

Abstract

The utility model relates to the technical field of lifting tools, in particular to a lifting tool for a head cover of a rail transit vehicle. The hood lifting appliance comprises a sling assembly, a frame structure and a fixing assembly, wherein the lower end of the sling assembly is connected with the frame structure; the fixing assembly comprises a supporting beam, a supporting beam and a hanging belt, the supporting beam and the supporting beam are connected to the bottom of the frame structure through the hanging belt, the supporting beam is parallel to the supporting beam, the distance between the supporting beam and the frame structure is larger than that between the supporting beam and the frame structure, the supporting beam is connected with the bottom of the hood, and the supporting beam is connected with the side face of the hood. The supporting beam and the supporting beam are connected to the bottom and the side face of the hood respectively, the hood made of light materials is prevented from deforming in the hoisting process, and the hood does not deform in the hoisting process. In addition, through the two fixing points, it is guaranteed that the joist, the supporting beam and the hood are firmly fixed, and the hood does not have the sideslip risk.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting tools, in particular to a head cover lifting device for a rail transit vehicle. Background Art

[0002] There is a hood on the outside of the driver's room of a rail transit vehicle. During the assembly process of the rail transit vehicle, the assembly quality requirements for the hood are getting higher and higher, and the hood needs to be hoisted when assembling it.

[0003] The existing hoisting method generally uses a lifting ring or a hook for fixing. Due to the lightweight requirements of rail transit vehicles, the hood has gradually evolved into lightweight materials such as carbon fiber. Since the hood is easily deformed, the current hoist cannot control the deformation and meet the hood assembly requirements. In addition, due to the high safety requirements for the hood lifting process, the use of a lifting ring or a hook for fixing has the risk of side slipping or falling, and the hoisting safety is low. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the embodiments of the utility model is to provide a rail transit vehicle hood hanger to solve the problems of hood deformation, hood side sliding, and falling caused by the existing hanger.

[0005] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solutions:

[0006] A rail transit vehicle hood sling, comprising: a sling assembly, a frame structure and a fixing assembly, wherein the lower end of the sling assembly is connected to the frame structure; the fixing assembly comprises a joist, a support beam and a sling, wherein the joist and the support beam are both connected to the bottom of the frame structure via the sling, the joist and the support beam are parallel, and the distance from the joist to the frame structure is greater than the distance from the support beam to the frame structure, the joist is connected to the bottom of the hood, and the support beam is connected to the side of the hood.

[0007] In another preferred embodiment, the sling assembly includes a lifting ring, a transition ring and a chain, the transition rings are arranged at both ends of the chain, the transition ring at the upper end of the chain is connected to the lifting ring, and the transition ring at the lower end of the chain is connected to the frame structure.

[0008] In another preferred embodiment, the sling assembly further comprises a first shackle, the chain and the transition ring at the upper end are detachably connected via the first shackle, and the chain and the transition ring at the lower end are detachably connected via the first shackle.

[0009] In another preferred embodiment, the sling assembly includes a plurality of chains, the lower ends of the plurality of chains are connected to the frame structure, and each of the chains is provided with a chain adjuster capable of changing the length of the chain.

[0010] In another preferred embodiment, the sling includes a first sling and a second sling, the length of the first sling is greater than the length of the second sling, the supporting beam is connected to the frame structure through two of the first slings, and the supporting beam is connected to the frame structure through two of the second slings.

[0011] In another preferred embodiment, the upper end of the first sling is connected to the frame structure via a second shackle, the lower end of the first sling is connected to the joist via a cargo hook, and the upper end of the second sling is connected to the frame structure via a second shackle.

[0012] In another preferred embodiment, both the first sling and the second sling are soft slings.

[0013] In another preferred embodiment, the support beam is detachably connected to the bottom of the head cover by bolts, and the support beam is detachably connected to the side of the head cover by bolts.

[0014] In another preferred embodiment, the frame structure includes side beams and connecting beams, each of which has two side beams and two connecting beams, and each of the two connecting beams has two ends connected to the two side beams respectively, and the supporting beams and bracing beams are respectively connected to the bottom sides of the two side beams.

[0015] In another preferred embodiment, the surface of the frame structure is sprayed with anti-rust primer and medium yellow topcoat.

[0016] One or more technical solutions provided in the embodiments of the present utility model have at least the following technical effects or advantages:

[0017] 1. The hood lifting device of the utility model is provided with a sling assembly, a frame structure and a fixing assembly from top to bottom in sequence, and the fixing assembly has a support beam and a brace beam arranged up and down. When lifting a hood made of lightweight materials such as fiberglass or carbon fiber, the support beam and the brace beam are respectively connected to the bottom and side of the hood, and the bottom and side of the hood are supported and supported by the support beam and the brace beam, so as to avoid deformation of the lightweight hood during the lifting process. The hood does not deform during the lifting process, which significantly improves the assembly quality of the hood. Moreover, the above two fixing points ensure that the support beam, the brace beam and the hood are firmly fixed, and there is no risk of side slipping of the hood, which improves the safety factor and significantly reduces the workload of manual handling.

[0018] 2. The sling assembly of the head cover sling of the utility model includes a plurality of chains, the lower ends of the plurality of chains are connected to the frame structure, and each of the chains is provided with a chain adjuster capable of changing the length of the chain. By configuring a chain adjuster on each chain and adjusting the length of the chain, the center of gravity of the head cover can be conveniently adjusted, and the advantages of fast adjustment and stable center of gravity after adjustment are achieved.

[0019] 3. The utility model head cover hanging device is provided with a square frame structure, and the surface of the square frame structure steel structure is sprayed with anti-rust primer and medium yellow topcoat, which has reliable strength and is easy to use, and the head cover and external paint are not easily damaged during use.

[0020] 4. A transition ring is arranged on the square frame structure of the head cover sling of the utility model, and the lower parts of the four sets of slings are connected to the transition ring on the square frame structure through chain shackles, so the connection is firm and reliable, and the safety factor is high.

[0021] 5. All major components of the head cover hanger of the utility model can be disassembled, which is convenient for storage, transportation, maintenance and replacement of accessories.

[0022] Additional advantages of the present invention will be given in the following description, and some will become apparent from the following description or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a front view of a hood hanger provided by an embodiment of the utility model;

[0025] Figure 2 It is a side view of a hood hanger provided by an embodiment of the utility model;

[0026] Figure 3 It is a top view of the frame structure provided by the embodiment of the utility model;

[0027] In the figure: 1, lifting ring; 2, transition ring; 3, first shackle; 4, chain adjuster; 5, chain; 6, cargo hook; 7, second shackle; 8, first lifting strap; 9, second lifting strap; 10, frame structure; 11, joist beam; 12, support beam;

[0028] In order to show the positions of various parts, the distances or sizes between them are exaggerated and the schematic diagram is for reference only. DETAILED DESCRIPTION

[0029] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the utility model. Unless otherwise specified, all technical and scientific terms used in the utility model have the same meanings as those generally understood by ordinary technicians in the technical field to which the utility model belongs. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof. In addition, the terms "install", "connect", "connect", "fix" and the like in the utility model should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be an internal connection between two elements, or an interaction relationship between two elements. For ordinary technicians in this field, the specific meaning of the terms in the utility model can be understood according to the specific circumstances.

[0030] As introduced in the background technology, during the assembly process of rail transit vehicles, the requirements for the assembly quality of the head cover are getting higher and higher. The prior art discloses a motor vehicle head cover lifting device, including: an adjustable hanging chain, a lifting frame, two lifting tools and two double-ear flat slings; the adjustable hanging chain includes a hanging ring, four transition rings, four shackles and four chains, the transition ring is connected to the hanging ring, the shackle includes two U-shaped buckles, and the two U-shaped buckles are detachably connected together to form an annular structure, wherein one U-shaped buckle hooks the transition ring, and the other U-shaped buckle hooks the chain; the lifting frame includes a long crossbeam, a short crossbeam and two longitudinal beams, the two longitudinal beams are connected between the long crossbeam and the short crossbeam, and the four chains are connected correspondingly. At the four corners of the lifting frame, the two ends of the long crossbeam are respectively connected to the first lifting sling, and the two ends of the short crossbeam are respectively connected to the second lifting sling, and the second lifting sling is longer than the first lifting sling: the lifting tooling includes a horizontal square tube, a vertical square tube and a hanging plate, the vertical square tube is welded to the middle part of the horizontal square tube, the hanging plate is welded to the horizontal square tube and the vertical square tube, the two ends of the horizontal square tube are provided with a first card slot, and the upper part of the vertical square tube is provided with a second card slot; the hanging plate is connected to the corresponding first lifting sling, and the double-ear flat sling is connected to the corresponding second lifting sling.

[0031] The hood hoisting device uses two double-ear flat slings and two lifting tools to fix the lower part, which poses a risk of side slipping or falling, and the hoisting safety is relatively low. On the other hand, the original EMU hood is made of aluminum alloy, and the aluminum alloy hood has no deformation problem during the hoisting process. However, the hoods of current urban rail vehicles or low-floor vehicles are mostly made of non-metallic materials such as fiberglass or carbon fiber, and non-metallic hoods have deformation problems during the hoisting process. In order to solve the above technical problems, the utility model proposes a rail transit vehicle hood hoist.

[0032] like Figure 1-Figure 3 As shown, in one embodiment of the utility model, a head cover hanger for a rail transit vehicle is proposed. Figure 1 A front view of the hood hanger is given. Figure 2 A side view of the hood hanger is given. Figure 3 A top view of the frame structure 10 is given. The hood hoist mainly includes three parts: a sling assembly, a frame structure 10 and a fixing assembly. The lower end of the sling assembly is connected to the frame structure 10. Specifically, the sling assembly is located at the uppermost end and is used to be hung on a traveling crane or a crane; the frame structure 10 is located between the sling assembly and the fixing assembly and is used to connect the fixing assembly to the sling assembly; the fixing assembly is located at the lowermost end and is used to be connected to the hood to be hoisted.

[0033] like Figure 1 , Figure 2 As shown, the fixing assembly includes a joist 11, a support beam 12 and a sling, and the joist 11 and the support beam 12 are connected to the bottom of the frame structure 10 through the sling. Figure 1 As shown, the bottom of the left side is a joist 11, and the bottom of the right side is a support beam 12, and the joist 11 and the support beam 12 are arranged in parallel on the left and right sides. It should be noted here that in the description of the present invention, the words "left", "right", "front" and "rear" only indicate the left, right, front and rear directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the equipment or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0034] The distance between the support beam 11 and the frame structure 10 is greater than the distance between the support beam 12 and the frame structure 10. Figure 2 As shown, in the vertical direction, the joist 11 is located at the lowest end of the entire hoist, and the support beam 12 is located on the upper side of the joist 11. During hoisting, the joist 11 is connected to the bottom of the head cover, and the support beam 12 is connected to the side of the head cover. Specifically, the joist 11 is connected to the bottom of the front side of the head cover, and the support beam 12 is connected to the rear side of the head cover.

[0035] The hood lifting device of the utility model is provided with a sling assembly, a frame structure 10 and a fixing assembly in sequence from top to bottom, and the fixing assembly has a support beam 11 and a support beam 12 arranged up and down. When lifting a hood made of a lightweight material such as fiberglass or carbon fiber, the support beam 11 and the support beam 12 are respectively connected to the bottom and the side of the hood, and the bottom and the side of the hood are supported and supported by the support beam 11 and the support beam 12, so as to avoid deformation of the lightweight hood during the lifting process. The hood does not deform during the lifting process, which significantly improves the assembly quality of the hood. Moreover, the above two fixing points ensure that the support beam 11, the support beam 12 and the hood are firmly fixed, and there is no risk of side slipping of the hood, which improves the safety factor and significantly reduces the workload of manual handling.

[0036] The sling assembly includes a lifting ring 1, a transition ring 2 and a chain 5. The transition rings 2 are provided at both ends of the chain 5. The chain 5 is connected to the lifting ring 1 and the frame structure 10 through the transition rings 2. Specifically, the transition ring 2 at the upper end of the chain 5 is connected to the lifting ring 1, and the transition ring 2 at the lower end of the chain 5 is connected to the frame structure 10. Further, the sling assembly also includes a first shackle 3. The chain 5 and the upper transition ring 2 are detachably connected through the first shackle 3, and the chain 5 and the lower transition ring 2 are detachably connected through the first shackle 3. Specifically, Figure 1 As shown, the sling assembly consists of a lifting ring 1, a transition ring 2, a first shackle 3 and a chain 5. The lifting ring 1 is arranged at the top of the hood lifting device. The lifting ring 1 can be a circular ring with an overall diameter of 120 mm, and the cross section of the lifting ring 1 can be a 20 mm round steel. The transition ring 2 can be a circular ring with an overall diameter of 80 mm, and the cross section can be a 16 mm round steel. The first shackle 3 can be an 8-shaped chain shackle.

[0037] On the other hand, due to the irregular shape of the hood, the operating console and other components in the hood have been pre-assembled and the components are irregularly distributed in the hood, and the center of gravity is not convenient to adjust after lifting. The current solution is to adjust the center of gravity by manually adjusting the connection position of the shackle and the chain 5, but it is inconvenient to operate.

[0038] The sling assembly of the head cover sling of the utility model includes a plurality of chains 5, the lower ends of the plurality of chains 5 are connected to the frame structure 10, and each of the chains 5 is provided with a chain adjuster 4 which can change the length of the chain 5. In this embodiment, four chains 5 are provided, and the length of the chains 5 is adjusted by configuring four chain adjusters 4, so that the center of gravity of the head cover is automatically adjusted, and the advantages of fast adjustment and stable center of gravity after adjustment are achieved.

[0039] When in use, the lifting rings 1 on the four chains 5 are hung on the hook of the overhead crane, and the entire hood lifting device is moved to the upper end of the hood to be lifted by the overhead crane, and the support beams 11 and the support beams 12 of the fixed assembly are connected to the hood to be lifted; the hood is lifted by the overhead crane, and the length of the chain 5 corresponding to the lower side is shortened by the chain adjuster 4 thereon, and the hood is lifted again, and the attempt is repeated until the hood is horizontal, and the length of the chain 5 is adjusted by configuring the chain adjuster 4, so that the center of gravity of the hood can be conveniently adjusted.

[0040] The slings of the present invention are divided into two types, namely, the slings include a first sling 8 (long sling) and a second sling 9 (short sling), wherein the length of the first sling 8 is greater than the length of the second sling 9. It should be noted that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0041] like Figure 1 As shown, the support beam 11 is connected to the frame structure 10 through two first slings 8, and the support beam 12 is connected to the frame structure 10 through two second slings 9. Through the first slings 8 and the second slings 9 of different lengths, the support beam 11 and the support beam 12 are located at different heights in the vertical direction, thereby achieving effective fixation of the hood in different directions and positions. Furthermore, the upper end of the first sling 8 is connected to the frame structure 10 through the second shackle 7, the lower end of the first sling 8 is connected to the support beam 11 through the cargo hook 6, and the upper end of the second sling 9 is connected to the frame structure 10 through the second shackle 7.

[0042] like Figure 1 As shown, four chains 5 are arranged on the upper part of the frame structure 10, and the upper parts of the four chains 5 are connected by a lifting ring 1. The joist 11 is connected to the frame structure 10 through a cargo hook 6, a long lifting strap, and a second shackle 7, while the support beam 12 is connected to the frame structure 10 through a short lifting strap and a second shackle 7.

[0043] The four slings at the bottom of the frame structure 10 include two short slings 1T×0.8m and two long slings 1T×3m. The second shackle 7 at the top of the sling is a shackle 1 / 2, and the bottom of the sling is an American cargo hook 1T. The two long slings are connected to the support beam 11 through the American cargo hook 6, and the two short slings are connected to the support beam 12. The support beam 12 and the support beam 11 are provided to support the hood to prevent the hood from deformation during the lifting process.

[0044] Further, the first sling 8 and the second sling 9 are both soft slings. Since the hood may come into contact with the sling during the lifting process, the slings are all set as soft slings to prevent the appearance of the hood from being damaged.

[0045] The joist 11 is detachably connected to the bottom of the head cover by bolts, and the support beam 12 is detachably connected to the side of the head cover by bolts. The bolts can be directly fixed on the joist 11 or the support beam 12, or bolt through holes are opened on the joist 11 or the support beam 12, and the joist 11 or the support beam 12 is connected to the head cover by bolts.

[0046] There are bolt holes at the bottom of the hood, and angle irons are provided on the rear side of the hood. Hexagonal bolts (e.g., M8×80) are provided on the support beam 11 to be fixed to the bottom of the hood, and hexagonal bolts (e.g., M12×90) are provided on the support beam 12 to be fixed to the angle iron position of the hood. The support beam 12 is fixedly connected to the angle iron of the hood by bolts, and the support beam 11 is fixedly connected to the bottom of the hood by bolts. The support beam 12 and the support beam 11 made of rigid materials can well avoid deformation of the hood made of fiberglass or carbon fiber. Moreover, the above two fixing points ensure that the support beam 11, the support beam 12 and the hood are firmly fixed to prevent the hood from sliding sideways and causing safety accidents.

[0047] like Figure 2 As shown, the support beam 11 in this embodiment is a square tube, and the two ends of the square tube are hung on the lower side of the long sling. Of course, it can be understood that the support beam 11 can also be other structures or forms. The support beam 12 includes a cross beam, a vertical beam and a reinforcing beam. The cross beam, the vertical beam and the reinforcing beam can all be square tubes. The cross beam is located at the bottom for connecting the rear side of the hood. A vertical beam is set on each of the left and right sides of the cross beam. The two sides of the reinforcing beam are arranged obliquely and connected to the cross beam and the vertical beam respectively. The cross beam, the vertical beam and the reinforcing beam can be connected by welding to ensure the connection strength between the beams. Of course, it can be understood that other connection methods can also be used as long as the connection strength is guaranteed. In addition, the support beam 12 can also adopt other shapes, such as rectangular, trapezoidal and other shapes, as long as it can be connected and fixed with the side of the hood. Those skilled in the art can select different shapes of support beams 12 according to different hoods.

[0048] like Figure 3 As shown, the frame structure 10 includes side beams and connecting beams. Figure 3 The side beams and the connecting beams are the beams on the left and right sides, and the connecting beams are the beams on the upper and lower sides. There are two side beams and two connecting beams, and the two ends of each connecting beam are connected to the two side beams respectively, thereby forming a rectangular frame structure 10. The supporting beam 11 and the bracing beam 12 are respectively connected to the bottom sides of the two side beams, and rollers are arranged at the bottom of the connecting beams. Specifically, two rollers are arranged at the bottom of each connecting beam, and a total of four rollers are arranged. The arrangement of the four rollers facilitates the movement of the frame structure 10.

[0049] The square frame structure 10 is a rigid frame structure 10, and the lower parts of the four chains 5 are connected to the transition ring 2 on the square frame structure 10 through chain shackles, which is reliable in strength and convenient to use. Further, the surface of the frame structure 10 is sprayed with anti-rust primer and medium yellow topcoat to prevent corrosion of the frame structure 10 and extend its service life.

[0050] In summary, the head cover hanger of the utility model has the following characteristics:

[0051] 1. A lifting ring 1 is arranged at the top of the head cover lifting device of the utility model. The size of the lifting ring 1 is Φ120 and the material of the lifting ring 1 is round steel 20-CM490.

[0052] 2. The utility model has 4 sets of slings under the lifting ring 1 of the hood lifting device. The slings are respectively composed of a transition ring 2Φ16×Φ80, an 8-shaped chain shackle, a chain adjuster 4, a chain 5, and an 8-shaped chain shackle. The chain adjuster 4 is configured to adjust the length of the chain 5, thereby realizing automatic adjustment of the center of gravity of the hood.

[0053] 3. The utility model hood hanging device is provided with a square frame structure 10, and the steel structure surface of the square frame structure 10 is sprayed with anti-rust primer and medium yellow topcoat, which has reliable strength and is easy to use, and the hood and the external paint are not easily damaged during use.

[0054] 4. A transition ring 2 is arranged on the square frame structure 10 of the utility model hood sling, and the lower parts of the four sets of slings are connected to the transition ring 2 on the square frame structure 10 through chain shackles. The connection is firm and reliable, and the safety factor is high.

[0055] 5. The utility model hood sling frame structure 10 is provided with four slings at the bottom, including two short slings and two long slings. Shackles are provided at the top of the slings and American cargo hooks 6 are provided at the bottom. The slings are soft slings to prevent damage to the appearance of the hood.

[0056] 6. The utility model hood hoist is provided with a support beam 11 and a supporting beam 12. The hood is supported by the supporting beam 12 and the support beam 11 to prevent the hood from being deformed during the hoisting process, thereby improving the installation quality of the hood.

[0057] 7. The two long slings of the utility model hood sling are connected to the support beam 11 through the American cargo hook 6, and the two short slings are connected to the support beam 12.

[0058] 8. The utility model hood hanger is provided with M8×80 hexagonal bolts on the support beam 11 to be fixed to the bottom of the hood, and M12×90 hexagonal bolts are provided on the support beam 12 to be fixed to the angle iron of the hood. The above two fixing points ensure that the support beam 11, the support beam 12 and the hood are firmly fixed to prevent the hood from sliding sideways.

[0059] 9. All major components of the hood hanger of the utility model can be disassembled, which is convenient for storage, transportation, maintenance and replacement of accessories.

[0060] The use process of the above hood lifting device:

[0061] When in use, the lifting rings 1 on the four chains 5 are hung on the hook of the overhead crane, and the entire hood lifting device is moved to the upper end of the hood to be lifted by the overhead crane. The support beam 11 of the fixing assembly is bolted to the bottom of the hood to be lifted, and the support beam 12 of the fixing assembly is bolted to the rear side of the hood to be lifted to ensure a fixed connection. The hood is lifted by the overhead crane, and the length of the chain 5 corresponding to the lower side is shortened by the chain adjuster 4 on it, and then lifted again. Repeat the attempt until the hood is horizontal, and the length of the chain 5 is adjusted by configuring the chain adjuster 4, so as to realize the convenient adjustment of the center of gravity of the hood. When the center of gravity of the hood is stable, the hood is moved by the overhead crane.

[0062] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A rail transit vehicle hood hanger, characterized in that: include: A sling assembly, a frame structure and a fixing assembly, wherein the lower end of the sling assembly is connected to the frame structure; The fixing assembly includes a joist, a support beam and a sling, wherein the joist and the support beam are connected to the bottom of the frame structure through the sling, the joist and the support beam are parallel, and the distance from the joist to the frame structure is greater than the distance from the support beam to the frame structure, the joist is connected to the bottom of the hood, and the support beam is connected to the side of the hood.

2. The rail transit vehicle head cover hanger according to claim 1, characterized in that: The sling assembly comprises a lifting ring, a transition ring and a chain. The transition rings are arranged at both ends of the chain. The transition ring at the upper end of the chain is connected to the lifting ring, and the transition ring at the lower end of the chain is connected to the frame structure.

3. The rail transit vehicle head cover hanger according to claim 2, characterized in that: The sling assembly further comprises a first shackle, through which the chain and the transition ring at the upper end are detachably connected, and through which the chain and the transition ring at the lower end are detachably connected.

4. The rail transit vehicle head cover hanger according to claim 2, characterized in that: The sling assembly comprises a plurality of chains, the lower ends of which are connected to the frame structure, and each of the chains is provided with a chain adjuster which can change the length of the chain.

5. The rail transit vehicle head cover hanger according to claim 1, characterized in that: The slings include a first sling and a second sling, the length of the first sling is greater than the length of the second sling, the support beam is connected to the frame structure through the two first slings, and the support beam is connected to the frame structure through the two second slings.

6. The rail transit vehicle head cover hanger according to claim 5, characterized in that: The upper end of the first sling is connected to the frame structure through a second shackle, the lower end of the first sling is connected to the joist through a cargo hook, and the upper end of the second sling is connected to the frame structure through a second shackle.

7. The rail transit vehicle head cover hanger according to claim 5, characterized in that: The first sling and the second sling are both soft slings.

8. The rail transit vehicle head cover hanger according to claim 1, characterized in that: The support beam is detachably connected to the bottom of the head cover by bolts, and the support beam is detachably connected to the side of the head cover by bolts.

9. The rail transit vehicle head cover hanger according to claim 1, characterized in that: The frame structure comprises side beams and connecting beams, each of which has two side beams and two connecting beams, and the two ends of each connecting beam are respectively connected to the two side beams, and the supporting beams and bracing beams are respectively connected to the bottom sides of the two side beams.

10. The rail transit vehicle head cover hanger according to claim 9, characterized in that: The surface of the frame structure is sprayed with anti-rust primer and medium yellow topcoat.

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