Box-shaped object handling device for roofed rail vehicles

Abstract

This invention discloses a box-shaped object loading and unloading device suitable for covered rail vehicles, comprising two sets. The device includes: a main load-bearing unit disposed at the end of the box-shaped object; a vertically arranged lifting mechanism; at least a portion of the lifting mechanism is disposed within the main load-bearing unit; the lifting mechanism includes a first lifting unit and a second lifting unit arranged in parallel; the first lifting unit is telescopic and capable of active movement; the second lifting unit is telescopic and capable of moving along with the first lifting unit or capable of active movement; and an auxiliary support unit connected to the main load-bearing unit and disposed away from the box-shaped object; the auxiliary support unit is capable of horizontal rotation, horizontal telescopic movement, and vertical lifting. This box-shaped object loading and unloading device is not limited by the top space of the loaded vehicle and is applicable to covered rail transit vehicles.

Description

Technical Field

[0001] This invention relates to a loading and unloading device for box-shaped objects suitable for covered rail vehicles. Background Technology

[0002] Currently, forklifts or cranes are generally used for loading and unloading box-shaped objects (such as containers) on railway flatcars and open wagons. When using covered railcars to load containers, on the one hand, due to the structural and space limitations of the covered railcars, forklifts or cranes cannot be used for loading and unloading containers; on the other hand, railway platform heights vary, and auxiliary platforms generally need to be built on the platforms to solve the height difference problem before container loading and unloading operations can be adapted to various platform height conditions. This results in low loading and unloading efficiency, high loading and unloading costs, and the safety and reliability need to be improved. Summary of the Invention

[0003] In view of this, the object of the present invention is to provide a loading and unloading device for box-shaped objects suitable for covered rail vehicles. The loading and unloading device of the present invention is not limited by the top space of the loaded vehicle. Furthermore, the loading and unloading device of the present invention can adapt to platforms of various heights, thus having a wide range of applications. The object of the present invention is achieved through the following technical solution.

[0004] This invention provides a box-shaped object loading and unloading device suitable for canopied rail vehicles, wherein the box-shaped object loading and unloading device comprises two sets; the box-shaped object loading and unloading device includes:

[0005] The main load-bearing unit is located at the end of the box-shaped object;

[0006] A lifting mechanism is vertically arranged; at least a portion of the lifting mechanism is disposed within the main load-bearing unit; the lifting mechanism includes a first lifting unit and a second lifting unit arranged in parallel; the first lifting unit is configured to be retractable and capable of active movement; the second lifting unit is configured to be retractable and capable of moving along with the first lifting unit or capable of active movement.

[0007] An auxiliary support unit, connected to the main load-bearing unit and positioned away from the box-shaped object, is configured to rotate horizontally, extend horizontally, and lift vertically. This loading and unloading device enables load-bearing, movement, and lifting functions. It can adapt to platforms of various heights and is not limited by the space above the vehicle.

[0008] In this invention, the main load-bearing unit can connect the lifting mechanism and the auxiliary support unit into a whole, bearing the weight of the box-shaped object and transferring it to the lifting mechanism.

[0009] In this invention, the box-shaped object loading and unloading device consists of two sets, each connected to one of the two ends of the box-shaped object. Each set of the box-shaped object loading and unloading device includes a main load-bearing unit, a lifting mechanism, and an auxiliary support unit.

[0010] In this invention, the box-shaped object has a first end plate and a second end plate arranged relatively parallel to each other; each of the two sets of main support units is provided with multiple connecting seats; the two sets of main support units are respectively fixedly connected to the first end plate and the second end plate through the connecting seats. This makes the loading and unloading of the box-shaped object more stable. The structure of the connecting seats is not particularly limited.

[0011] In this invention, the first lifting unit is a drive wheel lifting unit, and the second lifting unit can be either a driven wheel lifting unit or a drive wheel lifting unit. This allows the second lifting unit to be adjusted to either a driven wheel lifting unit or a drive wheel lifting unit according to the weight of the box-shaped object.

[0012] The box-shaped object loading and unloading device according to the present invention is preferably:

[0013] The main load-bearing unit is a box-shaped frame structure;

[0014] The first lifting unit is configured in at least two parts; the second lifting unit is configured in at least two parts; the first lifting unit is located at the edge of the main load-bearing unit; the second lifting unit is located in the middle of the main load-bearing unit and is located between the first lifting units. This facilitates the overall lifting of the box-shaped object to a predetermined height and improves the safety of the loading and unloading device.

[0015] In this invention, the main load-bearing unit can be a box-shaped frame steel structure with a accommodating space.

[0016] According to the box-shaped object loading and unloading device of the present invention, preferably, the first lifting unit includes:

[0017] The first fixed base is connected to the top of the main bearing unit;

[0018] A first motor is mounted on the first fixed base;

[0019] A first elevator is mounted on the first fixed base; the first motor is used to provide power to the first elevator.

[0020] The first outer sleeve is vertically arranged, and its top is connected to the first fixing seat;

[0021] A first inner sleeve is disposed within the first outer sleeve along its length; the first inner sleeve is matched with the first outer sleeve; the first inner sleeve is connected to the first lifting mechanism via a first lead screw; the first lifting mechanism is used to control the raising and lowering of the first inner sleeve.

[0022] The first steering wheel is located at the bottom of the first inner sleeve;

[0023] The first fixed base, the first lifting mechanism, and the first outer sleeve are located inside the main load-bearing unit; the first inner sleeve is located inside the main load-bearing unit but is configured to extend beyond it. This allows for the extension and retraction of the first lifting unit. The first steering wheel is capable of withstanding vertical loads, active movement, and ±90° steering.

[0024] In this invention, the first lifting unit can convert the torque of the first motor into the vertical lifting force of the first lead screw through the first motor and the first lifting mechanism at the top, and then transmit it to the first steering wheel at the bottom through the first inner sleeve, thereby realizing the lifting function. By controlling the raising and lowering of the first inner sleeve, the extension and retraction of the first lifting unit can be realized, that is, when the first inner sleeve rises, the first lifting unit shortens; when the first inner sleeve falls, the first lifting unit extends.

[0025] In this invention, the first lifting unit further includes a first force sensor, a first displacement sensor, and a first control system. The first force sensor and the first displacement sensor are both located at the end of the first inner sleeve furthest from the first fixed base. The first motor, the first lifting mechanism, the first force sensor, the first displacement sensor, and the first steering wheel are respectively connected to the first control system. This facilitates the automated adjustment of the movement direction of the box-shaped object transport device, including raising or lowering, moving forward or backward. This allows for independent and more accurate control of the first lifting unit.

[0026] According to the box-shaped object loading and unloading device of the present invention, preferably, the second lifting unit includes:

[0027] The second fixing seat is connected to the top of the main bearing unit;

[0028] The second motor is mounted on the second fixed base;

[0029] The second elevator is mounted on the second fixed base; the second motor is used to provide power to the second elevator.

[0030] The second outer sleeve is vertically arranged, and its top is connected to the second fixing seat;

[0031] A second inner sleeve is disposed within the second outer sleeve along its length; the second inner sleeve matches the second outer sleeve; the second inner sleeve is connected to the second lifting mechanism via a second lead screw; the second lifting mechanism is used to control the raising and lowering of the second inner sleeve.

[0032] The caster wheel is located at the bottom of the second inner sleeve;

[0033] The second fixed base, the second lifting mechanism, and the second outer sleeve are located inside the main load-bearing unit; the second inner sleeve is located inside the main load-bearing unit but is configured to extend beyond it. This allows for the extension and retraction of the second lifting unit. The second lifting unit is a driven wheel lifting unit, which coordinates with the movement of the first lifting unit.

[0034] According to the box-shaped object loading and unloading device of the present invention, preferably, the second lifting unit includes:

[0035] The second fixing seat is connected to the top of the main bearing unit;

[0036] The second motor is mounted on the second fixed base;

[0037] The second elevator is mounted on the second fixed base; the second motor is used to provide power to the second elevator.

[0038] The second outer sleeve is vertically arranged, and its top is connected to the second fixing seat;

[0039] A second inner sleeve is disposed within the second outer sleeve along its length; the second inner sleeve matches the second outer sleeve; the second inner sleeve is connected to the second lifting mechanism via a second lead screw; the second lifting mechanism is used to control the raising and lowering of the second inner sleeve.

[0040] The second steering wheel is located at the bottom of the second inner sleeve;

[0041] The second fixed base, the second lifting mechanism, and the second outer sleeve are located inside the main load-bearing unit; the second inner sleeve is located inside the main load-bearing unit but is configured to extend beyond it. This allows the second lifting unit to function as a drive wheel lifting unit as needed. The second steering wheel is capable of withstanding vertical loads, active movement, and ±90° steering.

[0042] In this invention, the second lifting unit may further include a second force sensor, a second displacement sensor, and a second control system; both the second force sensor and the second displacement sensor are located at the end of the second inner sleeve furthest from the second fixed base. The second motor, the second lifting mechanism, the second force sensor, and the second displacement sensor are respectively connected to the second control system. This facilitates the automated adjustment of the movement direction of the second lifting unit. This enables automated loading and unloading of box-shaped objects, and the first and second lifting units can be controlled independently, allowing for convenient operation as needed.

[0043] According to the box-shaped object loading and unloading device of the present invention, preferably, the main bearing unit is connected to at least two auxiliary support units; the at least two auxiliary support units are evenly distributed. After the box-shaped object is loaded or unloaded, the loading and unloading device needs to be detached from the box-shaped object. The auxiliary support units are unfolded until their angle with the main bearing unit is 90° to achieve stable separation of the loading and unloading device from the box-shaped object.

[0044] According to one specific embodiment of the present invention, the main bearing unit is connected to the two auxiliary support units.

[0045] According to the box-shaped object loading and unloading device of the present invention, preferably, the auxiliary support unit includes a horizontal telescopic component and a vertical lifting component; one end of the horizontal telescopic component is movably connected to the main bearing unit, and the other end is connected to the vertical lifting component; the horizontal telescopic component is configured to be capable of horizontal rotation and horizontal telescopic extension; the vertical lifting component is configured to be capable of vertical extension and retraction. This allows the auxiliary support unit to have the functions of horizontal rotation, horizontal telescopic extension, and vertical lifting.

[0046] According to the box-shaped object loading and unloading device of the present invention, preferably, each of the auxiliary support units includes at least two sets of horizontal telescopic components and one set of vertical lifting components.

[0047] According to a specific embodiment of the present invention, each of the auxiliary support units includes two sets of horizontal telescopic components and one set of vertical lifting components.

[0048] According to the box-shaped object loading and unloading device of the present invention, preferably, the horizontal telescopic assembly includes a horizontal outer sleeve, a horizontal inner sleeve, and a support connecting seat; wherein, one end of the support connecting seat is connected to the main load-bearing unit, and the other end is movably connected to the horizontal outer sleeve; the horizontal outer sleeve is horizontally arranged; the horizontal inner sleeve is arranged inside the horizontal outer sleeve along its length direction, the horizontal inner sleeve matches the horizontal outer sleeve, and the horizontal inner sleeve is configured to be movable along the length direction, thereby allowing the horizontal telescopic assembly to extend and shorten; the horizontal inner sleeve is configured not to completely detach from the horizontal outer sleeve. This ensures a stable connection between the auxiliary support unit and the main load-bearing unit and allows the auxiliary support unit to rotate horizontally.

[0049] In some embodiments, the support connector includes an upper clamping plate, a lower clamping plate, a pin, and a reinforcing plate; wherein one end of the upper clamping plate and one end of the lower clamping plate are respectively fixed to the main load-bearing unit; the upper clamping plate and the lower clamping plate are arranged parallel to each other, forming a horizontal outer sleeve receiving space between them; this horizontal outer sleeve receiving space is used to accommodate one end of the horizontal outer sleeve; the pin is arranged vertically and is configured to pass through the upper clamping plate, the horizontal outer sleeve, and the lower clamping plate in sequence; one end of the horizontal outer sleeve is configured to be able to rotate horizontally within the horizontal outer sleeve receiving space; the reinforcing plate includes an upper reinforcing plate and a lower reinforcing plate; the upper reinforcing plate is connected to the main load-bearing unit and the upper clamping plate respectively; the lower reinforcing plate is connected to the main load-bearing unit and the lower clamping plate respectively; both the upper and lower reinforcing plates are provided in at least two pieces.

[0050] In some embodiments, there are two upper reinforcing plates, which are arranged in parallel and evenly distributed; there are also two lower reinforcing plates, which are arranged in parallel and evenly distributed. In this invention, the reinforcing plates can be triangular in structure.

[0051] According to the box-shaped object loading and unloading device of the present invention, preferably, the vertical lifting assembly includes: a third fixed base, a vertical motor, a vertical lifting mechanism, a vertical outer sleeve, a vertical inner sleeve, a vertical lead screw, and vertical casters; wherein,

[0052] The vertical outer sleeve is vertically arranged and connected to the end of the horizontal inner sleeve away from the support connecting seat. The third fixed seat is located above the vertical outer sleeve and connected to its top. The vertical motor and the vertical lifting mechanism are both mounted on the third fixed seat. The vertical motor provides power to the vertical lifting mechanism. The vertical inner sleeve is arranged along its length inside the vertical outer sleeve and matches the outer sleeve. The vertical inner sleeve is connected to the vertical lifting mechanism via a vertical lead screw. The vertical inner sleeve is designed to be able to rise and fall. The vertical caster wheel is located at the bottom of the vertical inner sleeve. This allows for the raising and lowering (i.e., extension and retraction) of the vertical lifting assembly and facilitates movement.

[0053] In this invention, the vertical lifting assembly may further include a vertical force sensor, a vertical displacement sensor, and a vertical control system; both the vertical force sensor and the vertical displacement sensor are located at the end of the vertical inner sleeve furthest from the third fixed base. The vertical motor, vertical lifting mechanism, vertical force sensor, and vertical displacement sensor are respectively connected to the vertical control system. This facilitates the automated adjustment of the movement direction of the auxiliary support unit, including raising or lowering, moving forward or backward.

[0054] When loading a container using the box-shaped object loading and unloading device of the present invention, firstly, two main bearing units are connected to the first and second end plates of the container, respectively. The auxiliary support unit can be horizontally rotated and folded to fit snugly against the main bearing units. The first inner sleeve of the first lifting unit and the second inner sleeve of the second lifting unit simultaneously extend (descend), lifting the container to a predetermined height. Then, the first and second lifting units simultaneously move into the covered railcar. During the movement, the first and second lifting units retract (raise) sequentially until they are fully inside the covered railcar. Finally, the box-shaped object loading and unloading device is completely retracted, and the container falls onto the locking seat provided on the inner floor plate of the covered railcar, thus completing the loading operation. Figure 2 As shown, a main load-bearing unit contains two first lifting units and two second lifting units. One first lifting unit and one second lifting unit have already entered the covered railcar, while the other first lifting unit and one second lifting unit remain on the platform. Upon completion of loading and detachment of the main load-bearing unit from the container, the auxiliary support unit is deployed until its angle with the main load-bearing unit reaches 90°, thus achieving stable separation of the container loading / unloading device from the container. The unloading operation is the reverse of the loading operation.

[0055] The box-shaped object loading and unloading device of the present invention is not limited by the top space of the loading vehicle and can be applied to loading and unloading box-shaped objects on covered rail transit vehicles. Furthermore, the loading and unloading device of the present invention can adapt to platforms of various heights and can automatically adjust the lifting height according to the platform height, thus having a wide range of applications. Moreover, the box-shaped object loading and unloading device of the present invention can automatically "lift" box-shaped goods into and out of the carriage without the aid of forklifts or other tools; it can also stably separate from the box-shaped goods; and it can move independently and automatically when there are no box-shaped goods, making it simple and convenient to use. In addition, the box-shaped object loading and unloading device of the present invention can load and unload the entire train simultaneously, saving loading and unloading time and improving loading and unloading efficiency. Attached Figure Description

[0056] Figure 1 This is a schematic diagram showing the connection state between a box-shaped object loading and unloading device suitable for a covered rail vehicle and a box-shaped object according to the present invention.

[0057] Figure 2 This is a schematic diagram of the working state of a box-shaped object loading and unloading device suitable for a covered rail vehicle according to the present invention.

[0058] Figure 3 This is a schematic diagram of the structure of a box-shaped object loading and unloading device suitable for a covered rail vehicle according to the present invention.

[0059] Figure 4 This is a schematic diagram of the structure of a first lifting unit according to the present invention.

[0060] Figure 5 This is a schematic diagram of the structure of a second lifting unit according to the present invention.

[0061] Figure 6 This is a schematic diagram of the structure of an auxiliary support unit according to the present invention.

[0062] Figure 7 This is a schematic diagram of the structure of a support connector according to the present invention.

[0063] Explanation of reference numerals in the attached figures:

[0064] 10-Roller vehicle with roof, 20-Box-shaped object, 30-Platform, 100-Box-shaped object loading and unloading device, 110-Main load-bearing unit, 120-First lifting unit, 121-First motor, 122-First elevator, 123-First outer sleeve, 124-First inner sleeve, 125-First steering wheel, 130-Second lifting unit, 131-Second motor, 132-Second elevator, 133-Second outer sleeve 134-Second inner sleeve, 135-Wheel caster, 140-Auxiliary support unit, 141-Support connecting seat, 1411-Upper clamping plate, 1412-Lower clamping plate, 1413-Pin shaft, 1414-Reinforcing plate, 142-Horizontal outer sleeve, 143-Vertical motor, 144-Horizontal inner sleeve, 145-Vertical lifting machine, 146-Vertical outer sleeve, 147-Vertical inner sleeve, 148-Vertical wheel caster. Detailed Implementation

[0065] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0066] Example 1

[0067] Figure 1 This is a schematic diagram showing the connection state between a box-shaped object loading and unloading device suitable for a covered rail vehicle and a box-shaped object according to the present invention. Figure 2 This is a schematic diagram of the working state of a box-shaped object loading and unloading device suitable for a covered rail vehicle according to the present invention.

[0068] like Figure 1 and Figure 2 As shown, the box-shaped object loading and unloading device 100 of the present invention can be used to load box-shaped objects 20 (e.g., containers) from platform 30 onto covered rail vehicle 10. The box-shaped object loading and unloading device 100 of the present invention is not limited by the top space of the loading vehicle and can be applied to loading and unloading box-shaped objects 20 onto covered rail vehicle 10; it also solves the problem of inconsistent platform heights. Figure 1 As shown, the box-shaped object loading and unloading device 100 of the present invention consists of two sets.

[0069] Figure 3 This is a structural schematic diagram of a box-shaped object loading and unloading device suitable for canopied rail vehicles according to the present invention. Figure 3 As shown, each set of box-shaped object loading and unloading devices 100 includes a main load-bearing unit 110, a lifting mechanism, and an auxiliary support unit 140.

[0070] like Figure 1 As shown, there are two sets of main support units 110. Each main support unit 110 is a box-shaped frame structure, preferably a box-shaped steel frame structure. The two sets of main support units 110 are respectively located at both ends of the box-shaped object 20. Each set of main support units 110 is provided with multiple connecting seats for connecting the box-shaped object 20. These connecting seats are evenly distributed. The box-shaped object 20 has a first end plate and a second end plate arranged relatively parallel to each other. The two sets of main support units 110 are fixedly connected to the first end plate and the second end plate respectively via the connecting seats.

[0071] like Figure 1 As shown, the lifting mechanism consists of two sets. Figure 3 As shown, the lifting mechanism is vertically arranged. At least a portion of the lifting mechanism is located within the main support unit 110. The lifting mechanism includes a first lifting unit 120 and a second lifting unit 130 arranged in parallel.

[0072] like Figure 3 As shown, the first lifting unit 120 is arranged vertically, with at least a portion located within the main support unit 110. The first lifting unit 120 is retractable and can move actively. The second lifting unit 130 is arranged vertically, with at least a portion located within the main support unit 110. The second lifting unit 130 is retractable and can move along with the first lifting unit 120. The main support unit 110 contains two first lifting units 120 and two second lifting units 130. The first lifting units 120 are located at the edge of the main support unit 110. The second lifting units 130 are located in the middle of the main support unit 110 and are situated between the first lifting units 120.

[0073] Figure 4 This is a schematic diagram of the structure of a first lifting unit according to the present invention. Figure 4As shown, the first lifting unit 120 includes a first fixed base (not shown), a first motor 121, a first lifting mechanism 122, a first outer sleeve 123, a first inner sleeve 124, a first lead screw (not shown), a first steering wheel 125, a first force sensor (not shown), a first displacement sensor (not shown), and a first control system (not shown). The first fixed base is connected to the top of the main support unit 110. The first motor 121 is mounted on the first fixed base. The first lifting mechanism 122 is mounted on the first fixed base. The first motor 121 provides power to the first lifting mechanism 122. The first lifting mechanism 122 can be a screw jack. The first outer sleeve 123 is vertically arranged. The top of the first outer sleeve 123 is connected to the first fixed base and is located below the first fixed base. The first outer sleeve 123 can also be connected to the main support unit 110. The first inner sleeve 124 is disposed within the first outer sleeve 123 along its length. The first inner sleeve 124 matches the first outer sleeve 123. The first inner sleeve 124 is capable of raising and lowering. One end of the first inner sleeve 124 is connected to the first elevator 122 via a first lead screw. The first elevator 122 is used to control the raising and lowering of the first inner sleeve 124. A first steering wheel 125 is located at the bottom of the first inner sleeve 124 and is used for active movement. The first steering wheel 125 is capable of withstanding vertical loads, active movement, and ±90° steering. The first fixed base, the first elevator 122, and the first outer sleeve 123 are located inside the main load-bearing unit 110. The first inner sleeve 124 is located inside the main load-bearing unit 110 but can extend out of the main load-bearing unit 110.

[0074] Both the first force sensor and the first displacement sensor are located at the end of the first inner sleeve 124 furthest from the first fixed base. The first motor 121, the first elevator 122, the first force sensor, the first displacement sensor, and the first steering wheel 125 are respectively connected to the first control system. The first lifting unit 120 is a drive wheel lifting unit.

[0075] Figure 5 This is a schematic diagram of the structure of a second lifting unit according to the present invention. Figure 5As shown, the second lifting unit 130 includes a second fixed base (not shown), a second motor 131, a second lifting mechanism 132, a second outer sleeve 133, a second inner sleeve 134, a second lead screw, a caster wheel 135, a second force sensor (not shown), a second displacement sensor (not shown), and a second control system. The second fixed base is connected to the top of the main support unit 110. The second motor 131 is mounted on the second fixed base. The second lifting mechanism 132 is mounted on the second fixed base. The second motor 131 provides power to the second lifting mechanism 132. The second lifting mechanism 132 can be a screw jack. The second outer sleeve 133 is vertically arranged. The top of the second outer sleeve 133 is connected to the second fixed base and is located below the second fixed base. The second inner sleeve 134 is disposed within the second outer sleeve 133 along its length. The second inner sleeve 134 matches the second outer sleeve 133. The second inner sleeve 134 is capable of raising and lowering. One end of the second inner sleeve 133 is connected to the second lifting mechanism 132 via the second lead screw. The second lifting mechanism 132 is used to control the raising and lowering of the second inner sleeve 133. Casters 135 are located at the bottom of the second inner sleeve 134.

[0076] The second fixed base, the second elevator 132, and the second outer sleeve 133 are located inside the main support unit 110. The second inner sleeve 134 is located inside the main support unit 110, but can extend out of the main support unit 110.

[0077] The second force sensor and the second displacement sensor are both located at the end of the second inner sleeve 134 furthest from the second fixed base. The second motor 131, the second elevator 132, the second force sensor, and the second displacement sensor are respectively connected to the second control system. The second lifting unit 130 is a driven wheel lifting unit.

[0078] like Figure 3 As shown, the auxiliary support unit 140 is connected to the main load-bearing unit 110, and the auxiliary support unit 140 is positioned away from the box-shaped object 20. The auxiliary support unit 140 is capable of horizontal rotation, horizontal extension and retraction, and vertical lifting and lowering.

[0079] Each main support unit 110 is connected to at least two auxiliary support units 140. Preferably, each main support unit 110 is connected to two auxiliary support units 140. The two auxiliary support units 140 are evenly distributed.

[0080] Each auxiliary support unit 140 includes at least two sets of horizontal telescopic components and one set of vertical lifting components. For example, each auxiliary support unit 140 includes two sets of horizontal telescopic components and one set of vertical lifting components. One end of the horizontal telescopic component is movably connected to the main load-bearing unit 110, and the other end is connected to the vertical lifting component. The horizontal telescopic component is capable of horizontal rotation and horizontal telescopic extension. The vertical lifting component is capable of vertical extension and retraction.

[0081] Figure 6 This is a schematic diagram of the structure of an auxiliary support unit according to the present invention. Figure 6 As shown, the horizontal telescopic assembly includes a horizontal outer sleeve 142, a horizontal inner sleeve 144, and a support connecting seat 141. One end of the support connecting seat 141 is connected to the main load-bearing unit 110, and the other end is movably connected to the horizontal outer sleeve 142. The horizontal outer sleeve 142 is horizontally positioned. The horizontal inner sleeve 144 is positioned within the horizontal outer sleeve 142 along its length direction. The horizontal inner sleeve 144 matches the horizontal outer sleeve 142 and can move along its length direction, thereby allowing the horizontal telescopic assembly to extend and shorten. The horizontal inner sleeve 144 cannot be completely detached from the horizontal outer sleeve 142.

[0082] like Figure 6 As shown, the vertical lifting assembly includes a third fixed base (not shown), a vertical motor 143, a vertical lift 145, a vertical outer sleeve 146, a vertical inner sleeve 147, a vertical lead screw (not shown), a vertical caster wheel 148, a vertical force sensor (not shown), a vertical displacement sensor (not shown), and a vertical control system. The vertical outer sleeve 146 is vertically arranged. The vertical outer sleeve 146 is connected to the end of the horizontal inner sleeve 144 away from the support connecting seat 141. The third fixed base is located above the vertical outer sleeve 146 and connected to its top. Both the vertical motor and the vertical lift are mounted on the third fixed base. The vertical motor provides power to the vertical lift. The vertical inner sleeve 147 is arranged along its length inside the vertical outer sleeve 146 and matches the vertical outer sleeve 146. The vertical inner sleeve 147 is connected to the vertical lift 145 via the vertical lead screw. The vertical inner sleeve 147 can be raised and lowered. Vertical casters 148 are located at the bottom of the vertical inner sleeve 147. Both the vertical force sensor and the vertical displacement sensor are located at the end of the vertical inner sleeve 147 furthest from the third fixed base. The vertical motor 143, the vertical lift 145, the vertical force sensor (not shown), and the vertical displacement sensor (not shown) are connected to the vertical control system.

[0083] Figure 7 This is a schematic diagram of the structure of a support connector according to the present invention. Figure 7As shown, the support connecting seat 141 includes an upper clamping plate 1411, a lower clamping plate 1412, a pin 1413, and a reinforcing plate 1414. One end of the upper clamping plate 1411 and one end of the lower clamping plate 1412 are respectively fixed to the main bearing unit 110. The upper clamping plate 1411 and the lower clamping plate 1412 are arranged parallel to each other, forming a horizontal outer sleeve receiving space between them. This horizontal outer sleeve receiving space is used to accommodate one end of the horizontal outer sleeve 142. The pin 1413 is vertically arranged and passes through the upper clamping plate 1411, the horizontal outer sleeve 142, and the lower clamping plate 1412 in sequence. One end of the horizontal outer sleeve 142 can rotate horizontally within the horizontal outer sleeve receiving space.

[0084] Example 2

[0085] The only difference from Embodiment 1 is that the universal wheel 135 in the second lifting unit 130 is replaced by a second steering wheel, which allows the second lifting unit 130 to move actively, forming an active wheel lifting unit. The second steering wheel can withstand vertical loads, move actively, and turn ±90°.

[0086] This invention is not limited to the above-described embodiments. Any modifications, improvements, or substitutions that can be conceived by those skilled in the art without departing from the essential content of this invention fall within the scope of this invention.

Claims

1. A container loading and unloading device suitable for covered rail vehicles, characterized in that, The container loading and unloading device consists of two sets, which are respectively connected to the two ends of the container; Each set of container loading and unloading equipment includes: The main load-bearing unit is located at the end of the container; the main load-bearing unit is a box-shaped frame structure with a storage space. A lifting mechanism is vertically arranged; at least a portion of the lifting mechanism is disposed within the main support unit; the lifting mechanism includes a first lifting unit and a second lifting unit arranged in parallel; the first lifting unit is configured to be retractable and capable of active movement; the second lifting unit is configured to be retractable and capable of moving along with the first lifting unit or capable of active movement; there are at least two first lifting units; there are at least two second lifting units; the first lifting unit is located at the edge of the main support unit; the second lifting unit is located in the middle of the main support unit and is situated between the first lifting units; An auxiliary support unit is connected to the main load-bearing unit and is located away from the container; the auxiliary support unit is configured to be able to rotate horizontally, extend horizontally, and lift vertically. The main load-bearing unit is connected to at least two of the auxiliary support units; the at least two auxiliary support units are evenly distributed. The auxiliary support unit includes a horizontal telescopic component and a vertical lifting component; one end of the horizontal telescopic component is movably connected to the main load-bearing unit, and the other end is connected to the vertical lifting component; the horizontal telescopic component is configured to be able to rotate and extend horizontally; the vertical lifting component is configured to be able to extend and retract vertically. Each of the auxiliary support units includes at least two sets of horizontal telescopic components and one set of vertical lifting components; The container has a first end plate and a second end plate arranged in parallel with each other; each of the two sets of main load-bearing units is provided with multiple connecting seats; the two sets of main load-bearing units are respectively fixedly connected to the first end plate and the second end plate through the connecting seats.

2. The container loading and unloading device according to claim 1, characterized in that, The first lifting unit includes: The first fixed base is connected to the top of the main bearing unit; A first motor is mounted on the first fixed base; A first elevator is mounted on the first fixed base; the first motor is used to provide power to the first elevator. The first outer sleeve is vertically arranged, and its top is connected to the first fixing seat; A first inner sleeve is disposed within the first outer sleeve along its length; the first inner sleeve is matched with the first outer sleeve; the first inner sleeve is connected to the first lifting mechanism via a first lead screw; the first lifting mechanism is used to control the raising and lowering of the first inner sleeve. The first steering wheel is located at the bottom of the first inner sleeve; The first fixed base, the first elevator, and the first outer sleeve are located inside the main load-bearing unit; the first inner sleeve is located inside the main load-bearing unit, but is configured to extend out of the main load-bearing unit.

3. The container loading and unloading device according to claim 2, characterized in that, The second lifting unit includes: The second fixing seat is connected to the top of the main bearing unit; The second motor is mounted on the second fixed base; The second elevator is mounted on the second fixed base; the second motor is used to provide power to the second elevator. The second outer sleeve is vertically arranged, and its top is connected to the second fixing seat; A second inner sleeve is disposed within the second outer sleeve along its length; the second inner sleeve matches the second outer sleeve; the second inner sleeve is connected to the second lifting mechanism via a second lead screw; the second lifting mechanism is used to control the raising and lowering of the second inner sleeve. The caster wheel is located at the bottom of the second inner sleeve; The second fixed base, the second elevator, and the second outer sleeve are located inside the main load-bearing unit; the second inner sleeve is located inside the main load-bearing unit, but is configured to extend out of the main load-bearing unit.

4. The container loading and unloading device according to claim 2, characterized in that, The second lifting unit includes: The second fixing seat is connected to the top of the main bearing unit; The second motor is mounted on the second fixed base; The second elevator is mounted on the second fixed base; the second motor is used to provide power to the second elevator. The second outer sleeve is vertically arranged, and its top is connected to the second fixing seat; A second inner sleeve is disposed within the second outer sleeve along its length; the second inner sleeve matches the second outer sleeve; the second inner sleeve is connected to the second lifting mechanism via a second lead screw; the second lifting mechanism is used to control the raising and lowering of the second inner sleeve. The second steering wheel is located at the bottom of the second inner sleeve; The second fixed base, the second elevator, and the second outer sleeve are located inside the main load-bearing unit; the second inner sleeve is located inside the main load-bearing unit, but is configured to extend out of the main load-bearing unit.

5. The container loading and unloading device according to claim 1, characterized in that, The horizontal telescopic assembly includes a horizontal outer sleeve, a horizontal inner sleeve, and a support connecting seat; wherein, one end of the support connecting seat is connected to the main load-bearing unit, and the other end is movably connected to the horizontal outer sleeve; the horizontal outer sleeve is horizontally positioned; the horizontal inner sleeve is positioned inside the horizontal outer sleeve along its length direction, the horizontal inner sleeve matches the horizontal outer sleeve, and the horizontal inner sleeve is configured to be movable along its length direction, thereby enabling the horizontal telescopic assembly to extend and shorten; the horizontal inner sleeve is configured not to completely detach from the horizontal outer sleeve.

6. The container loading and unloading device according to claim 5, characterized in that, The vertical lifting assembly includes: a third fixed base, a vertical motor, a vertical lifting mechanism, a vertical outer sleeve, a vertical inner sleeve, a vertical lead screw, and vertical casters; wherein, The vertical outer sleeve is vertically arranged and connected to the end of the horizontal inner sleeve away from the support connecting seat; the third fixed seat is arranged above the vertical outer sleeve and connected to the top of the vertical outer sleeve; the vertical motor and the vertical lifting mechanism are both arranged on the third fixed seat; the vertical motor is used to provide power to the vertical lifting mechanism; the vertical inner sleeve is arranged inside the vertical outer sleeve along the length direction and matches the vertical outer sleeve; the vertical inner sleeve is connected to the vertical lifting mechanism through the vertical lead screw; the vertical inner sleeve is configured to be able to rise and fall; the vertical universal wheel is arranged at the bottom of the vertical inner sleeve.

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