Cargo loading and unloading device and rail vehicle

Abstract

The embodiment of the invention provides a cargo loading and unloading device and a railway vehicle, and the cargo loading and unloading device comprises a first suspension arm which can be accommodated in a carriage of the railway vehicle and is detachably connected to the top of the carriage; the second lifting arm is inserted into the first lifting arm and can stretch and retract relative to the first lifting arm; the lifting mechanism is arranged on the second lifting arm and can move on the part, extending out of the first lifting arm, of the second lifting arm; a lifting hook used for being connected with goods is arranged on the lifting mechanism. According to the cargo loading and unloading device and the railway vehicle provided by the embodiment of the invention, ground cargos can be hoisted and transported, and the cargo loading and unloading device and the railway vehicle can adapt to hoisting and transporting at high stations, low stations and positions without stations; equipment such as forklifts and platform elevators is not needed any more, ground equipment is not needed any more, and the labor burden is relieved; the loading and unloading device can be installed on the top of the compartment when needed, can be detached and placed in the compartment to be transported along with the vehicle when not used, and is installed on the top of the compartment to be hoisted after arriving at the destination.

Description

Technical Field

[0001] The present application relates to rail vehicle cargo loading and unloading technology, and in particular to a cargo loading and unloading device and a rail vehicle. Background Art

[0002] Freight-carrying rail vehicles are usually equipped with loading and unloading devices for loading and unloading goods. Whether the functions, automation level and operation convenience of the loading and unloading devices are reasonable directly affects the loading and unloading efficiency and the safety of goods. At stations and freight yards with platforms, the current way of loading and unloading goods is generally to carry them on shoulders or rely on larger ground equipment and facilities such as forklifts. Ground facilities are usually large in size and weight, and have high requirements for the flatness of the ground at the work site. They have poor environmental adaptability and cannot achieve fast loading and unloading operations.

[0003] Some foreign vehicles are equipped with on-board lifting devices, which can load and unload goods by rotating, folding and lifting operations. However, this type of lifting device is usually driven by electricity or hydraulics, has large size and weight, occupies space in the vehicle, and is greatly affected by the height of the platform. It cannot be used to load and unload goods in places without platforms, and has poor adaptability. Summary of the invention

[0004] In order to solve one of the above-mentioned technical defects, a cargo loading and unloading device and a rail vehicle are provided in an embodiment of the present application.

[0005] According to a first aspect of an embodiment of the present application, there is provided a cargo handling device, comprising:

[0006] A first boom can be accommodated in a carriage of a rail vehicle and can be detachably connected to the top of the carriage;

[0007] The second suspension arm is inserted in the first suspension arm and can be extended and retracted relative to the first suspension arm;

[0008] The lifting mechanism is arranged on the second lifting arm and can move on the part where the second lifting arm extends out of the first lifting arm; the lifting mechanism is provided with a hook for connecting the goods.

[0009] According to a second aspect of an embodiment of the present application, there is provided a rail vehicle, comprising: the cargo loading and unloading device as described above.

[0010] The technical solution provided in the embodiment of the present application adopts a first boom that can be accommodated in the carriage of a rail vehicle and can be detachably connected to the top of the carriage; the second boom is inserted in the first boom and can be telescopic relative to the first boom; the lifting mechanism is arranged on the second boom and can move the part of the second boom that extends out of the first boom; the lifting mechanism is provided with a hook for connecting goods, so as to realize the lifting of ground goods, and can lift at the platform position or at a position without a platform, thereby reducing the requirements for the height of the ground or the platform; and there is no need for forklifts, platform elevators and other equipment, no longer relying on ground equipment, and reducing the manpower burden; the loading and unloading device can be installed on the top of the carriage when loading and unloading is needed, and can be removed and placed in the carriage for transportation after loading and unloading, and then installed on the top of the carriage for lifting when arriving at the destination. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0012] Figure 1 A schematic diagram of the structure of a cargo loading and unloading device provided in an embodiment of the present application applied to a rail vehicle;

[0013] Figure 2 A schematic diagram of the structure in which the locking mechanism in the cargo handling device provided in an embodiment of the present application is rotated to the storage position;

[0014] Figure 3 A schematic diagram of the structure of a locking mechanism in a cargo handling device provided in an embodiment of the present application rotated to a locking position;

[0015] Figure 4 A schematic diagram of a structure in which a second boom is extended from a first boom in a cargo handling device provided in an embodiment of the present application;

[0016] Figure 5 A cross-sectional exploded view of a first locking mechanism in a cargo handling device provided in an embodiment of the present application;

[0017] Figure 6 A cross-sectional view of the docking of the first locking mechanism in the cargo handling device provided in an embodiment of the present application;

[0018] Figure 7 A cross-sectional view of a first locking mechanism in a cargo handling device provided in an embodiment of the present application being locked;

[0019] Figure 8 A cross-sectional exploded view of a second locking mechanism in a cargo handling device provided in an embodiment of the present application;

[0020] Fig. 9A step diagram of a locking process of a second locking mechanism in a cargo handling device provided in an embodiment of the present application;

[0021] Fig.10 A schematic diagram of the structure of a first boom and a second boom in a cargo handling device provided in an embodiment of the present application;

[0022] Fig.11 A cross-sectional view of a first boom and a second boom in a cargo handling device provided in an embodiment of the present application;

[0023] Fig.12 A cross-sectional view of a second lifting arm and a lifting mechanism in a cargo handling device provided in an embodiment of the present application;

[0024] Fig.13 A partial enlarged view of the second lifting arm and the lifting mechanism in the cargo handling device provided in the embodiment of the present application;

[0025] Fig.14 A partial enlarged view of the linkage between the second lifting arm and the lifting mechanism in the cargo handling device provided in the embodiment of the present application;

[0026] Fig.15 A cross-sectional view from another angle of the second boom and the lifting mechanism in the cargo handling device provided in an embodiment of the present application.

[0027] Reference numerals:

[0028] 1-first boom; 11-slide rail; 12-sliding block; 13-top wedge-shaped stop block; 14-side wedge-shaped stop block;

[0029] 2-second boom; 21-handle; 22-track; 23-stopper; 24-toothed belt; 25-pulley; 26-gear; 27-rack;

[0030] 3-hoisting mechanism; 31-traveling mechanism; 32-pulley frame; 33-hoisting head; 34-hook; 35-fixed pulley; 36-movable pulley; 37-locking hook; 371-hook;

[0031] 4-first locking mechanism; 41-upper bracket; 411-first locking groove; 412-first locking protrusion; 413-first semicircular locking block; 414-first unlocking handle; 415-first elastic locking member 42-lower bracket; 421-second locking groove; 422-second locking protrusion; 423-second semicircular locking block; 424-second unlocking handle; 425-second elastic locking member; 426-second rotating shaft;

[0032] 5-second locking mechanism; 51-body lock block; 511-lock block pin; 52-lock housing; 53-lock fork; 531-lock block pin groove; 532-stop notch; 54-handle; 541-stop protrusion; 55-elastic locking member; 56-rotating shaft; 57-mounting seat;

[0033] 61-carriage roof; 62-side wall;

[0034] 7-Wire rope;

[0035] 8-Wind. DETAILED DESCRIPTION

[0036] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0037] This embodiment provides a cargo loading and unloading device, which is used on a rail vehicle and can lift cargo on the ground into a carriage, or lift cargo in a carriage to the ground. The cargo loading and unloading device can be placed in the carriage and transported with the vehicle, reducing the dependence on personnel or ground equipment, thereby improving loading and unloading efficiency.

[0038] like Figure 1 As shown, the cargo handling device provided in this embodiment includes: a first lifting arm 1, a second lifting arm 2 and a lifting mechanism 3. The first lifting arm 1 can be accommodated in a carriage of a rail vehicle and can be detachably connected to the top of the carriage. If a carriage roof is provided on the top of the carriage, the first lifting arm 1 can be detachably connected to the carriage roof.

[0039] The second arm 2 is inserted into the first arm 1 and can be extended relative to the first arm 1. The first arm 1 can be set at the door and extend along the width direction of the carriage. The second arm 2 faces the door and can be extended out of the door to lift goods on the ground, or can be retracted into the carriage.

[0040] The lifting mechanism 3 is arranged on the second lifting arm 2, and can move in the part where the second lifting arm 2 extends out of the first lifting arm 1. For example, the second lifting arm 2 extends out from the first lifting arm 1, and the lifting mechanism 3 moves along the second lifting arm 2 toward the vehicle door. The lifting mechanism 3 is provided with a hook for connecting the cargo.

[0041] During the loading process, the loading and unloading device is first connected to the top of the carriage. Then the second lifting arm 2 is moved and extended from the door, and then the lifting mechanism 3 is moved along the second lifting arm 2. The lifting mechanism 3 can also be lowered to connect the hook with the cargo, and then the lifting mechanism 3 is raised and moved into the carriage to lift the cargo into the carriage. After the cargo is lifted, the loading and unloading device can be removed and placed in the carriage for transportation.

[0042] When the vehicle arrives at the destination, during the unloading process, the loading and unloading device is first connected to the top of the car body, and then the lifting mechanism 3 is lowered to connect with the cargo, and then the lifting mechanism 3 is raised, the second boom 2 is moved and extended from the door, and at the same time the lifting mechanism 3 is moved along the second boom 2 to the outside of the car body. After reaching the unloading position, the lifting mechanism 3 is lowered to place the cargo on the ground to complete the unloading.

[0043] The technical solution provided in this embodiment adopts a first boom that can be accommodated in the carriage of a rail vehicle and can be detachably connected to the top of the carriage; the second boom is inserted in the first boom and can be telescopic relative to the first boom; the lifting mechanism is arranged on the second boom and can move the part of the second boom that extends out of the first boom; the lifting mechanism is provided with a hook for connecting goods, so as to realize the lifting of ground goods, and can lift at the platform position or at a position without a platform, thereby reducing the requirements for the height of the ground or the platform; and there is no need for forklifts, platform elevators and other equipment, no longer relying on ground equipment, and reducing the manpower burden; the loading and unloading device can be installed on the top of the carriage when loading and unloading is needed, and can be removed and placed in the carriage for transportation after loading and unloading, and then installed on the top of the carriage for lifting when arriving at the destination.

[0044] Based on the above technical solution, this embodiment provides a specific implementation method: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a first locking mechanism 4 and a second locking mechanism 5 are respectively arranged at both ends of the first suspension arm 1. The first locking mechanism 4 is used to be detachably connected to the car roof 61, and the second locking mechanism 5 is used to be detachably connected to the outer surface of the vehicle side wall 62.

[0045] Further, the first locking mechanism 4 is rotatably connected to the first suspension arm 1, that is, the first locking mechanism 4 can be rotated downward to a storage state, or rotated upward to a connection state, so as to be connected to the compartment roof 61. The second locking mechanism 5 is rotatably connected to the first suspension arm 1, that is, the second locking mechanism 5 can be rotated downward to a storage state, or rotated upward to a connection state, so as to be connected to the side wall 62.

[0046] Figure 2 It shows that the first locking mechanism 4 and the second locking mechanism 5 are both in the storage state. Figure 3It is shown that both the first locking mechanism 4 and the second locking mechanism 5 are in a connected state. Figure 4 It is shown that the second boom 2 extends from the first boom 1 , and the hoisting mechanism 3 moves along the second boom 2 .

[0047] On the basis of the above technical solution, for the first locking mechanism 4, this embodiment provides an implementation method: Figures 5 to 7 As shown, the first locking mechanism 4 includes an upper bracket 41 and a lower bracket 42 .

[0048] The top end of the upper bracket 41 is used to be fixed on the compartment roof 61, for example, it can be connected to the compartment roof 61 by bolts, or it can be connected to the compartment roof 61 by buckles. The bottom end of the upper bracket 41 is provided with a first locking groove 411, a first locking protrusion 412, a first semicircular locking block 413 and a first unlocking handle 414.

[0049] The first locking groove 411 and the first locking protrusion 412 are arranged side by side, that is, the first locking groove 411 is arranged beside the first locking protrusion 412. A cavity is formed in the upper part of the first locking protrusion 412, and the cavity and the first locking groove 411 are separated by a side wall. The upper bracket 41 is also provided with a semicircular locking cavity, the locking cavity is located between the first locking groove 411 and the first locking protrusion 412, and the locking cavity is communicated with the cavity on the upper part of the first locking protrusion 412, and the locking cavity is communicated with the first locking groove 411. The first semicircular locking block 413 is embedded in the locking cavity and can rotate in the locking cavity. The first unlocking handle 414 is inserted into the cavity on the upper part of the first locking protrusion 412 and is connected to the first semicircular locking block 413. Rotating the first unlocking handle 414 can drive the first semicircular locking block 413 to rotate.

[0050] The bottom end of the lower bracket 42 is arranged on the first suspension arm 1. The top end of the lower bracket 42 is provided with a second locking groove 421, a second locking protrusion 422, a second semicircular locking block 423, and a second unlocking handle 424.

[0051] The second locking groove 421 and the second locking protrusion 422 are arranged side by side, that is, the second locking groove 421 is arranged beside the second locking protrusion 422. And the second locking protrusion 422 can be correspondingly inserted into the first locking groove 411, and the first locking protrusion 412 can be correspondingly inserted into the second locking groove 421.

[0052] A cavity is formed in the lower part of the second locking protrusion 422, and the cavity is separated from the second locking groove 421 by a side wall. The lower bracket 42 is also provided with a semicircular locking cavity, which is located between the second locking groove 421 and the second locking protrusion 422, and the locking cavity is communicated with the cavity at the lower part of the second locking protrusion 422, and the locking cavity is communicated with the second locking groove 421. The second semicircular locking block 423 is embedded in the locking cavity and can rotate in the locking cavity. The second unlocking handle 424 is inserted into the cavity at the lower part of the second locking protrusion 422 and is connected to the second semicircular locking block 423. Rotating the second unlocking handle 424 can drive the second semicircular locking block 423 to rotate.

[0053] When the planes of the first semicircular locking block 413 and the second semicircular locking block 423 are butted against each other, and the butting plane is vertical, that is, the butting plane is parallel to the plugging direction of the upper bracket 41 and the lower bracket 42, the state is unlocked, and the upper bracket 41 and the lower bracket 42 can be separated and unlocked along the plugging direction. If the first unlocking handle 414 and the second unlocking handle 424 are rotated to rotate the first semicircular locking block 413 and the second semicircular locking block 423 until the angle between the butting plane and the plugging direction of the upper bracket 41 and the lower bracket 42 is greater than 0°, the state is locked, and the upper bracket 41 and the lower bracket 42 are mutually stopped by the locking blocks and cannot be separated along the plugging direction.

[0054] Furthermore, a first elastic locking member 415 is connected between the upper bracket 41 and the first unlocking handle 414 . The first elastic locking member 415 may be a linear spring, and its rebound force causes the first unlocking handle 414 to rotate to a locked state.

[0055] A second elastic locking member 425 is connected between the lower bracket 42 and the second unlocking handle 424 . The second elastic locking member 425 may be a linear spring, and its rebound force causes the second unlocking handle 424 to rotate to a locked state.

[0056] During operation, the first unlocking handle 414 and the second unlocking handle 424 are respectively rotated clockwise to make the plane of the first semicircular locking block 413 flush with the first locking groove 411, and the plane of the second semicircular locking block 423 flush with the second locking groove 421. At this time, the first elastic locking member 415 and the second elastic locking member 425 are in a stretched state, accumulating elastic potential energy.

[0057] Then, the lower bracket 42 is upwardly connected to the upper bracket 41, so that the second locking protrusion 422 is inserted into the first locking groove 411, and the first locking protrusion 412 is inserted into the second locking groove 421. At the moment of insertion, the first semicircular locking block 413 is connected to the second semicircular locking block 423, and the connecting plane is flush with the inner wall of the first locking groove 411 and the inner wall of the second locking groove 421. Figure 6 shown.

[0058] Afterwards, under the rebound force of the first elastic locking piece 415 and the second elastic locking piece 425, the first unlocking handle 414 and the second unlocking handle 424 rotate counterclockwise, the first semicircular locking block 413 and the second semicircular locking block 423 also rotate counterclockwise, the first semicircular locking block 413 prevents the second locking protrusion 422 from escaping from the first locking groove 411, and the second semicircular locking block 423 prevents the first locking protrusion 4111 from escaping from the second locking groove 421, so as to achieve the effect of connecting and locking the upper bracket 41 and the lower bracket 42. Figure 7 shown.

[0059] When unlocking is required, the first unlocking handle 414 and the second unlocking handle 424 are rotated clockwise respectively to make the plane of the first semicircular locking block 413 flush with the first locking groove 411, and the plane of the second semicircular locking block 423 flush with the second locking groove 421, so that the upper bracket 41 can be separated from the lower bracket 42.

[0060] The above solution can realize the quick plug-in locking and unlocking of the first locking mechanism 4 without the need for additional tools, thereby improving the operating efficiency, and the locking reliability is high, which can prevent the loading and unloading device from falling and improve safety.

[0061] Furthermore, the bottom end of the lower bracket 42 is connected to the first boom 1 via a rotating shaft (defined as: second rotating shaft 426), so that the lower bracket 42 can be rotated upward to a locked state to be connected to the upper bracket 41, or rotated downward to a storage state.

[0062] On the basis of the above technical solution, this embodiment further provides a specific implementation of the second locking mechanism 5: Figure 8 and Fig. 9 As shown, the second locking mechanism 5 includes: a vehicle body lock stopper 51 , a locking housing 52 , a lock fork 53 and a handle 54 .

[0063] The vehicle body lock stopper 51 is disposed on the outer surface of the vehicle side wall 62 , and a lock stopper pin 511 is provided on the side surface of the vehicle body lock stopper 51 .

[0064] The bottom end of the locking housing 52 is disposed on the first suspension arm 1. The locking fork 53 and the handle 54 are both disposed on the locking housing 52, and can be disposed on the surface of the locking housing 52, or in the internal cavity of the locking housing 52.

[0065] The lock fork 53 is rotatably disposed on the locking housing 52 , one end of the lock fork 53 is provided with a lock pin groove 531 which can be embedded in the lock pin 511 , and the other end of the lock fork 53 is provided with a stop notch 532 .

[0066] The handle 54 is rotatably disposed on the locking housing 52 , and a stop protrusion 541 is disposed at the end of the handle 54 for abutting against the stop notch 532 when the locking fork 53 rotates to the locking position.

[0067] Furthermore, an elastic locking member 55 is used and disposed between the handle 54 and the locking housing 52. The elastic locking member 55 may be a torsion spring, and the rebound force of the elastic locking member 55 causes the handle 54 to rotate to a locked state.

[0068] During operation, if Fig. 9 As shown in the four figures, the locking housing 52 is raised until the locking pin groove 531 and the locking pin 511 are at the same height. Then the locking housing 52 is moved toward the locking pin 511. During the movement, the locking pin 511 gradually enters the locking pin groove 531 and pushes the lock fork 53 to rotate counterclockwise until the stop notch 532 passes over the stop protrusion 541. Then, under the action of the rebound force of the elastic locking member 55, the stop protrusion 541 abuts against the stop notch 532, preventing the lock fork 53 from rotating in the opposite direction, and is in a locked state. In the locked state, the opening of the locking pin groove 531 faces upward, and the locking housing 52 prevents the locking pin 511 from escaping from the locking pin groove 531, thereby locking the locking housing 52 and the vehicle body lock block 51.

[0069] During the disassembly process, the handle 54 is rotated clockwise to make the stop protrusion 541 disengage from the stop notch 532, and the locking shell 52 is moved leftward to make the locking fork 53 rotate clockwise until the locking pin 511 disengages from the locking pin groove 531, thereby completing the separation of the locking shell 52 and the vehicle body lock 51.

[0070] Further, a mounting seat 57 is fixedly provided on the upper surface of the first suspension arm 1. The bottom end of the locking housing 52 is connected to the mounting seat 57 via a rotating shaft 56, so that the locking housing 52 can be rotated upward to a locked state to be connected to the vehicle body lock stopper 51 or rotated downward to a storage state.

[0071] On the basis of the above technical solution, this embodiment also provides implementation methods of the first boom 1, the second boom 2 and the lifting mechanism 3. Fig.10 and Fig.11 As shown, a cavity is provided in the first boom 1, and an opening communicating with the cavity is provided at the bottom of the first boom 1, and the opening extends along the length direction of the first boom 1. The second boom 2 is telescopically inserted into the cavity of the first boom 1. A handle 21 is connected to the bottom end of the second boom 2, and the width of the handle 21 is greater than the width of the opening, so that the handle 21 is located below the first boom 1.

[0072] A slide rail 11 and a slider 12 are provided between the first boom 1 and the second boom 2. The slide rail 11 is provided on the inner wall of the first boom 1, and specifically, the inner walls on both sides are provided with slide rails 11, the slide rail 11 extends along the length direction of the first boom 1, and the slide rail 11 is provided with a slide groove, and the opening direction of the slide groove faces the second boom 2.

[0073] The slider 12 is arranged on the outer wall of the second arm 2, and the slider 12 is correspondingly embedded in the slide groove and can move in the slide groove. The slide rail 11 cooperates with the slide groove 12 to guide the movement between the first arm 1 and the second arm 2. Furthermore, a rolling body can be arranged in the slide groove to change the sliding friction between the slider 12 and the slide groove 11 to rolling friction, so that the movement of the second arm 2 is smoother, and the surface wear of the two is reduced to increase the service life. The rolling body can be a spherical ball or a cylindrical ball.

[0074] Furthermore, a wedge-shaped stop block is provided between the first boom 1 and the second boom 2 to limit the extreme position of the extension of the second boom 2 .

[0075] One way is to set a top wedge-shaped stopper 13 between the top surface of the second boom 2 and the first boom 1, for example, two top wedge-shaped stoppers 13 are used, one of which is fixed on the inner surface of the first boom 1, specifically at the limit position where the second boom 2 can move. The other top wedge-shaped stopper 13 is fixed on the upper surface of the second boom 2, specifically at the tail of the second boom 2. The two top wedge-shaped stoppers 13 are set in opposite directions. When the second boom 2 is about to extend to the limit position, the inclined surfaces of the two top wedge-shaped stoppers 13 contact and squeeze each other to prevent the second boom 2 from moving further. Fig.10 Only one of the top wedge-shaped stops 13 is labeled.

[0076] Further, a side wedge-shaped stopper 14 is provided between the side surface of the second boom 2 and the first boom 1, for example, two side wedge-shaped stoppers 14 are used, one of which is fixed on the inner surface of the first boom 1, specifically at the limit position where the second boom 2 can move. The other side wedge-shaped stopper 14 is fixed on the outer surface of the side wall of the second boom 2. The two side wedge-shaped stoppers 14 are provided in opposite directions. When the second boom 2 is about to extend to the limit position, the inclined surfaces of the two side wedge-shaped stoppers 14 contact and squeeze each other to prevent the second boom 2 from moving further. Fig.10 Only one of the side wedge-shaped stops 14 is marked.

[0077] like Fig.12 , Fig.13 , Fig.14 and Fig.15As shown, a cavity is provided in the second arm 2, and an opening communicating with the cavity is provided at the bottom of the second arm 2, and the opening extends along the length direction of the second arm 2. A track 22 is provided on the inner wall of the second arm 2, and specifically, the track 22 is provided on the inner surface of the two side walls of the second arm 2.

[0078] The hoisting mechanism 3 is located in the cavity of the second boom 2, and running mechanisms 31 are provided on both sides of the hoisting mechanism 3, which can travel along the track 22. The running mechanism 31 is specifically a running wheel, and the running wheels can be provided above and below the track 22, respectively.

[0079] The lifting mechanism 3 specifically includes a pulley frame 32 and a lifting head 33. The pulley frame 32 is connected to the running mechanism 31, and the running mechanism 31 drives the pulley frame 32 to move along the second boom 2. A fixed pulley 35 is provided on the pulley frame 32, and a movable pulley 36 is provided on the lifting head 33. One end of the wire rope 7 is fixed to the pulley frame 32, and passes through the movable pulley 35 and the fixed pulley 36 in sequence to be connected to the winch 8, and the winch 8 drives the wire rope 7 to move and drives the lifting head 33 to rise and fall.

[0080] A hook 34 is provided at the bottom end of the lifting head 33 for hooking the cargo to be lifted.

[0081] Furthermore, the lifting mechanism 3 further comprises a locking hook 37, the middle part of which is rotatably connected to the pulley frame 32, one end of the locking hook 37 being the first end and the other end being the second end. The first end of the locking hook 37 is provided with a hook portion 371, and the second end extends above the lifting head 33.

[0082] A stopper 23 is disposed at the bottom end of the second suspension arm 2 , and the stopper 23 is a structure protruding downward.

[0083] When the lifting head 33 moves downward, the locking hook 37 rotates clockwise until the hook portion 371 is hooked on the left end of the stop portion 23 to lock the pulley frame 32 at the current position to prevent the pulley frame from moving horizontally when the lifting head 33 is lifting goods.

[0084] The hoist drives the wire rope 7 to be recovered, so that the hanging head 33 moves upward until an upward force is applied to the second end of the lock hook 37, and the lock hook 37 rotates counterclockwise until the hook portion 371 is separated from the stopper 23, and then under the action of the hoist, the hanging head 33 moves along the second boom 2 with the cargo. The stopper 23 also serves to limit the position of the pulley frame 32, limiting its extreme position of movement.

[0085] In the above solution, the movement of the second boom 2 can be achieved through the handle 21 , and the operator holds the handle 21 to move the second boom 2 .

[0086] Furthermore, a toothed belt 24 and a pulley 25 are provided in the second suspension arm 2. A pulley 25 is provided at each end of the second suspension arm 2. The toothed belt 24 is sleeved on the pulley 25 and meshes with the pulley 25. The running mechanism 31 is fixedly connected to the toothed belt 24 through a clamping member. When the running mechanism 31 and the pulley frame 32 move, the toothed belt 24 is driven to move, and then the pulley 25 is driven to rotate.

[0087] The pulley 25 is coaxially connected with the gear 26, and the pulley 25 rotates synchronously with the gear 26. A rack 27 is fixedly provided in the first boom 1, and the gear 26 is meshed with the rack 27.

[0088] When the lifting mechanism 3 moves into the car, the toothed belt 24 moves with the pulley frame 32, the pulley 25 rotates, driving the gear 26 to rotate, and through the meshing action of the gear 26 and the rack 27, the second boom 2 is also driven to move synchronously into the car, thereby realizing the linkage retraction of the lifting mechanism 3 and the second boom 2.

[0089] On the contrary, when the second boom 2 is extended outward, the gear 26 rotates to drive the pulley 25 to rotate, and then drives the toothed belt 24 to move, thereby driving the pulley frame 32 to move outward, so that the lifting mechanism 3 and the second boom 2 are extended in conjunction.

[0090] The second boom 2 can be manually extended by the handle 21, or the second boom 2 can be automatically extended by a motor.

[0091] On the basis of the above technical solutions, this embodiment further provides a rail vehicle, including the cargo loading and unloading device provided in any of the above contents. The cargo loading and unloading device is detachably arranged on the top of the carriage, located at a position corresponding to the door, the second lifting arm in the cargo loading and unloading device is retractable, and the lifting mechanism 3 can extend from the door to the carriage to lift the ground cargo.

[0092] The rail vehicle provided in this embodiment has the same technical effect as the above-mentioned cargo loading and unloading device, and can replace manual handling in the case of low platforms or even no platforms, thereby improving the operation efficiency. The rail vehicle can load and unload cargo quickly, stably and automatically, and there is almost no need to change the structure of the existing rail vehicle, less space is occupied in the vehicle, and it can adapt to cargo of various specifications, with strong adaptability.

[0093] This solution is applicable to freight vehicles as well as passenger and cargo vehicles. It does not affect passengers getting on the vehicle through the door, and can assist people with limited mobility to get on the vehicle. It can also be used to lift cargo, and has relatively flexible adaptability.

[0094] In addition, the cargo loading and unloading device becomes a minimalist columnar structure in the stored state, has a smaller volume, occupies less space in the vehicle, is easy to assemble and disassemble, has low cost, and has great promotion and application value.

[0095] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0096] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0097] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0098] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0099] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A cargo handling device, characterized in that: include: A first boom can be accommodated in a carriage of a rail vehicle and can be detachably connected to the top of the carriage; The second suspension arm is inserted in the first suspension arm and can be extended and retracted relative to the first suspension arm; The lifting mechanism is arranged on the second lifting arm and can move on the part where the second lifting arm extends out of the first lifting arm; the lifting mechanism is provided with a hook for connecting the goods.

2. The cargo handling device according to claim 1, characterized in that: Also includes: A first locking mechanism and a second locking mechanism are respectively arranged at two ends of the first suspension arm; a first locking mechanism for removably attaching to the roof panel of the vehicle compartment; The second locking mechanism is adapted to be removably connected to the outer surface of the vehicle side wall.

3. The cargo handling device according to claim 2, characterized in that: The first locking mechanism comprises: The upper bracket; the top of the upper bracket is used to be fixed on the roof of the carriage; the bottom end of the upper bracket is provided with a first locking groove, a first locking protrusion, a first semicircular locking block arranged between the first locking groove and the first locking protrusion, and a first unlocking handle connected to the first semicircular locking block; Lower bracket; the bottom end of the lower bracket is arranged on the first suspension arm; the top end of the lower bracket is provided with a second locking groove, a second locking protrusion, a second semicircular locking block arranged between the second locking groove and the second locking protrusion, and a second unlocking handle connected to the second semicircular locking block; The first locking protrusion is correspondingly inserted into the second locking groove, and the second locking protrusion is correspondingly inserted into the first locking groove; the first semicircular locking block is docked with the plane of the second semicircular locking block; the first unlocking handle and the second unlocking handle are rotated to rotate the first semicircular locking block and the second semicircular locking block to an unlocked state in which the docking plane is parallel to the plug-in direction of the upper bracket and the lower bracket, or to a locked state in which the angle between the docking plane and the plug-in direction of the upper bracket and the lower bracket is greater than 0°.

4. The cargo handling device according to claim 3, characterized in that: Also includes: a first elastic locking member and a second elastic locking member; The first elastic locking member is connected between the upper bracket and the first unlocking handle, and the rebound force of the first elastic locking member causes the first unlocking handle to rotate to a locked state; The second elastic locking member is connected between the lower bracket and the second unlocking handle, and the rebound force of the second elastic locking member causes the second unlocking handle to rotate to a locked state.

5. The cargo handling device according to claim 4, characterized in that: The bottom end of the lower bracket is connected to the first suspension arm through a rotating shaft, so that the lower bracket can be rotated upward to a locked state to be connected to the upper bracket or rotated downward to a storage state.

6. The cargo handling device according to claim 2, characterized in that: The second locking mechanism comprises: The vehicle body lock block is arranged on the outer surface of the vehicle side wall; the side surface of the vehicle body lock block is provided with a lock block pin; A locking shell; the bottom end of the locking shell is arranged on the first suspension arm; A lock fork is rotatably arranged on the locking housing; one end of the lock fork is provided with a lock pin groove into which the lock pin can be embedded; and the other end of the lock fork is provided with a stop notch; The handle is rotatably arranged on the locking shell; a stop protrusion is arranged at the end of the handle for abutting against the stop notch when the locking fork is rotated to the locking position.

7. The cargo handling device according to claim 6, characterized in that: Also includes: The elastic locking piece is arranged between the handle and the locking shell; the rebound force of the elastic locking piece makes the handle rotate to the locking state.

8. The cargo handling device according to claim 7, characterized in that: The bottom end of the locking shell is connected to the first suspension arm through a rotating shaft, so that the locking shell can be rotated upward to a locking state to be connected to the vehicle body lock stopper or rotated downward to a storage state.

9. The cargo handling device according to claim 1, characterized in that: A cavity is provided in the first suspension arm, and an opening communicating with the cavity is provided at the bottom of the first suspension arm, and the opening extends along the length direction of the first suspension arm; The second suspension arm is telescopically inserted into the cavity of the first suspension arm; a handle is connected to the bottom end of the second suspension arm, and the handle is located below the first suspension arm; A slide rail and a slide block are arranged between the first suspension arm and the second suspension arm.

10. The cargo handling device according to claim 9, characterized in that: A wedge-shaped stop block is provided between the first boom and the second boom, for limiting the extreme position of the extension of the second boom.

11. The cargo handling device according to claim 1, characterized in that: A cavity is provided in the second suspension arm, and an opening communicating with the cavity is provided at the bottom of the second suspension arm, and the opening extends along the length direction of the second suspension arm; a track is provided on the inner wall of the second suspension arm; The hoisting mechanism is located in the cavity of the second boom; running mechanisms are arranged on both sides of the hoisting mechanism and can move along the track.

12. The cargo handling device according to claim 11, characterized in that: The lifting mechanism includes: The pulley frame is connected to the traveling mechanism; a fixed pulley is provided on the pulley frame; A lifting head is provided with a movable pulley; a hook is provided at the bottom end of the lifting head; one end of the wire rope is fixed to the pulley frame, passes through the movable pulley and the fixed pulley in sequence and is connected to the winch.

13. The cargo handling device according to claim 12, characterized in that: The lifting mechanism also includes: A lock hook; the middle portion of the lock hook is rotatably connected to the pulley frame; a hook portion is provided at the first end of the lock hook; A stopper is provided at the bottom end of the second suspension arm; When the hanging head moves downward, the lock hook rotates until the hook part is hooked on the stop part to lock the pulley frame in the current position; when the hanging head moves upward until an upward force is applied to the second end of the lock hook, the lock hook rotates until the hook part is separated from the stop part.

14. A rail vehicle, characterized in that: include: A cargo handling device as claimed in any one of claims 1 to 13.

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