CN215159431U - Loading and unloading auxiliary device - Google Patents

Abstract

The utility model provides a loading and unloading auxiliary device; the loading and unloading auxiliary device comprises a supporting component and a pedal component; the supporting assembly comprises a plurality of supporting seats, the supporting seats are arranged at intervals along the same direction, and the heights of the supporting seats are sequentially reduced or increased progressively along the arrangement direction; the pedal assembly comprises a plurality of pedal pieces, the pedal pieces are respectively erected on the corresponding supporting seats, and the pedal pieces jointly form a driving inclined plane and form a first end with a preset height away from the ground and a second end supported on the ground; a plurality of including the first footboard spare that is located higher one end and the third footboard spare that is located lower one end in the footboard spare, first footboard spare with correspond the detachable fixed connection of supporting seat. This loading and unloading auxiliary device can assemble the step piece spare and the supporting seat of different quantity according to the height on trailer and ground, realizes the loading or unloads, can split into a plurality of weight and the less part of volume, is convenient for process and transport.

Description

Loading and unloading auxiliary device

Technical Field

The utility model relates to a loading and unloading auxiliary technique particularly, relates to a loading and unloading auxiliary device.

Background

Based on the reasons of legal regulation and the like, part of construction equipment (operation equipment) cannot run on a highway by a self-carried walking device, and can finish site transfer only by consignment of a trailer.

These devices must be moved to the bed of the trailer, such as a mobile crushing station, before field transfer can take place. When moving to the operation site, the movable crushing station needs to be moved to the flat plate of the trailer by self-power and then is consigned to the operation site through the trailer. The bed of the trailer is usually at a height above the ground and in order to facilitate movement of the mobile crushing station from the ground to the bed, it is often necessary to rely on a loading assist (or ladder) to establish an angled (sloped) transition support between the ground and the bed. The movable crushing station has a complex structure and a large volume, and the inclination angle of a transition support established by the loading and unloading auxiliary device (or the ladder stand) is preferably 5-15 degrees; if the transition support is established only by relying on the ladder stand of the trailer, the inclination angle of the transition support is usually about 20 degrees, so that loading and unloading of the movable crushing station are inconvenient, and the transfer efficiency is affected.

Therefore, how to smoothly and rapidly complete loading and unloading of the operation equipment (or construction equipment) and improve the transfer efficiency is a technical problem to be solved by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving and how to make operation equipment (or construction equipment) can be smooth, swift completion loading, unloading, improve transfer efficiency's problem.

In order to solve the above problems, the utility model provides a loading and unloading auxiliary device, which comprises a support component and a pedal component; the supporting assembly comprises a plurality of supporting seats, the supporting seats are arranged at intervals along the same direction, and the heights of the supporting seats are sequentially reduced or increased progressively along the arrangement direction;

the pedal assembly comprises a plurality of pedal pieces, the pedal pieces are respectively erected on the corresponding supporting seats, and the pedal pieces jointly form a driving inclined plane and form a first end with a preset height away from the ground and a second end supported on the ground; a plurality of including the first footboard spare that is located higher one end and the third footboard spare that is located lower one end in the footboard spare, first footboard spare with correspond the detachable fixed connection of supporting seat.

Optionally, the plurality of pedal members further includes at least one second pedal member located at a middle position, the second pedal member is erected on the corresponding support seat, and the second pedal member and the third pedal member are respectively detachably and fixedly connected to the corresponding support seat; one end of the third pedal part, which is close to the second pedal part, is erected on the corresponding supporting seat, and a first surface structure is arranged at the bottom of the other end of the third pedal part and is used for supporting the third pedal part on the ground.

Optionally, the handling aid further comprises a carrier member located on a side of the first tread member remote from the third tread member, the carrier member being adapted to support a ladder stand of a trailer.

Optionally, the handling aid further comprises a plurality of said carriers of different heights; alternatively, the first and second electrodes may be,

the bearing piece comprises a bearing body and a first cushion block group, the upper end or the lower end of the bearing body is connected with the first cushion block group, the first cushion block group comprises at least one first cushion block, and the first cushion block group realizes height adjustment by increasing or decreasing the number of the first cushion blocks and/or replacing the first cushion blocks with different heights; alternatively, the first and second electrodes may be,

the bearing piece comprises a bearing body and a first telescopic piece; the bearing body is fixedly connected with the first telescopic piece, and the first telescopic piece stretches along the vertical direction.

Optionally, the support seat includes a support body and a second cushion block group, the second cushion block group includes at least one second cushion block, and the second cushion block group realizes height adjustment by increasing or decreasing the number of the second cushion blocks and/or replacing the second cushion blocks with different heights; alternatively, the first and second electrodes may be,

the supporting seat comprises a supporting body and a second telescopic piece; the support body is fixedly connected with the second telescopic piece, and the second telescopic piece stretches along the vertical direction.

Optionally, the first pedal member includes a first pedal body and a bearing portion, the bearing portion is located at one end of the first pedal body far away from the third pedal member, and the bearing portion is used for supporting a ladder stand of a trailer.

Optionally, the supporting seat is arranged at a position adjacent to two adjacent pedal members, and the supporting seat is detachably connected with the two adjacent pedal members respectively; and/or two adjacent pedal pieces are detachably connected.

Optionally, the top end of the supporting seat is provided with a first inclined surface, and the first inclined surface is parallel to the traveling crane inclined surface.

Optionally, the supporting seat includes a top plate and a plurality of columns, and the plurality of columns are uniformly distributed at the bottom of the top plate and are fixedly connected with the top plate.

Optionally, the footboard spare includes a plurality of first plate bodys, frame and a plurality of second plate bodys, and is a plurality of first plate body is followed arrange the direction interval distribution, and with the top fixed connection of frame, it is a plurality of the second plate body is followed arrange the direction interval distribution, and with the bottom fixed connection of frame, at least one the second plate body with correspond the supporting seat is connected.

The utility model provides a loading and unloading auxiliary device includes a plurality of footboard spare and a plurality of supporting seat, and the footboard spare is erect on the supporting seat, and is a plurality of footboard spare forms the driving inclined plane jointly. When the operation equipment is loaded and unloaded, different numbers of pedal parts and supporting seats can be assembled according to the height between the trailer and the ground, and the inclination angle of a traveling slope (used for loading or unloading) is ensured not to exceed 20 degrees, so that the operation equipment can be moved onto the trailer (or moved from the trailer to the trailer) through the loading and unloading auxiliary device. And, the first step piece that is located the high-end is with the detachable fixed connection of supporting seat, and whole loading and unloading auxiliary device can be split into a plurality of weights and the less part of volume, the processing and the transportation of the first step piece of being convenient for.

Drawings

Fig. 1 is a schematic structural view of a loading/unloading assist device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of the loading/unloading assisting device further including a bearing member according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a first step member including a bearing portion of the loading/unloading assist apparatus according to an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is an enlarged partial view taken at B in FIG. 3;

fig. 6 is a schematic structural diagram of a bearing member according to an embodiment of the present invention;

fig. 7 is an exploded schematic view of the supporting seat according to an embodiment of the present invention.

Description of reference numerals:

1-support assembly, 11-support base, 111-support body, 1111-top plate, 1112-column, 1113-bottom plate, 112-second cushion block group, 1121-second cushion block, 2-pedal assembly, 21-pedal member, 211-first pedal member, 2111-first pedal body, 2112-bearing portion, 2113-first plate body, 2114-frame, 2115-second plate body, 212-second pedal member, 213-third pedal member, 2131-first panel structure, 214-ear hanging structure, 3-bearing member, 31-bearing body, 32-first cushion block group, 321-first cushion block.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

As shown in fig. 1, the present invention provides a loading/unloading assist device, which includes a support assembly 1 and a pedal assembly 2; the supporting assembly 1 comprises a plurality of supporting seats 11, the supporting seats 11 are arranged at intervals along the left-right direction, and the heights of the supporting seats 11 are sequentially reduced from left to right; the pedal assembly 2 comprises a plurality of pedal pieces 21, the pedal pieces 21 are respectively erected on the corresponding supporting seats 11, and the pedal pieces 21 jointly form a loading inclined plane, a first end with a preset height away from the ground and a second end supported on the ground.

As shown in fig. 3, the pedal members 21 include a first pedal member 211 at a higher end (i.e., left end) and a third pedal member 213 at a lower end (i.e., right end), and the first pedal member 211 is detachably and fixedly connected to the corresponding support base 11.

During operation, support this a plurality of supporting seats 11 in proper order on ground from a left side to the right side according to the height, erect each footboard piece 21 on the supporting seat 11 that corresponds, this a plurality of footboard pieces 21 form the driving inclined plane jointly, and at this moment, the left end of first footboard piece 211 docks with the automobile body of trailer (also can be other transport vechicles), and third footboard piece 213 supports subaerial. Taking the getting on and off of the crawler-type mobile crushing station as an example, the device comprises two crawler belts, the loading and unloading auxiliary devices are arranged into two groups, and the two groups of loading and unloading auxiliary devices are respectively used for the walking of the two crawler belts. In this way, the loading/unloading assist device occupies less space, but of course, only one loading/unloading assist device may be provided for realizing the traveling of the two crawler belts.

At this time, the third pedal member 213 and the corresponding support seat 11 may be detachably fixed or integrally connected, which is not limited to this, and the pedal member 21 may be a plate-shaped integral structure or an assembled structure, which will be described in detail later.

Thus, the loading and unloading auxiliary device comprises a plurality of pedal parts 21 and a plurality of supporting seats 11, the pedal parts 21 are erected on the supporting seats 11, when the operation equipment is loaded and unloaded, different numbers of pedal parts 21 and supporting seats 11 can be assembled according to the height between a trailer and the ground, the inclination angle of the inclined plane of the travelling crane is ensured not to exceed 20 degrees (generally 5-15 degrees), so that the operation equipment can be moved onto the trailer (or from the trailer to the trailer), in addition, the first pedal part 211 positioned at the high end is detachably and fixedly connected with the corresponding supporting seat 11, the whole loading and unloading auxiliary device can be disassembled into a plurality of parts with smaller weight and volume, and the processing and the transportation of the first pedal part 211 are convenient.

As shown in fig. 3, the plurality of pedal members 21 further includes at least one second pedal member 212 located at a middle position, the second pedal member 212 is erected on the corresponding support seat 11, and the second pedal member 212 and the third pedal member 213 are detachably and fixedly connected to the corresponding support seat 11; the left end of the third pedal member 213 is erected on the corresponding supporting seat 11, the bottom of the right end of the third pedal member 213 is provided with a first face structure 2131, and the first face structure 2131 is used for supporting on the ground. At this time, the first surface structure 2131 is flush with the bottom surface of the support base 11. The number of the second pedal members 212 or the first pedal members 211 is increased according to the height of the trailer from the ground, and the corresponding support seats 11 are arranged, so that the inclination angle of the top surface (i.e. the traffic slope) of the whole pedal assembly 2 is ensured not to exceed 20 degrees (generally 5-15 degrees).

That is, all the pedal members 21 are detachably and fixedly connected to the corresponding support bases 11. Of course, in other embodiments, it can be provided that a part of the lower support 11 is fixedly connected to the corresponding pedal member 21, for example, the third pedal member 213 is fixedly connected to the corresponding pedal member 21.

Like this, at the during operation, third step piece 213 has the bigger contact surface with ground, and the force stability is high to, supporting seat 11 all sets up to dismantling, can carry out the split to this loading and unloading auxiliary device according to actual need, thereby be convenient for this loading and unloading auxiliary device's storage and transportation, strengthen its portability.

Some trailers include a platform and a ladder stand, but the minimum angle of inclination of the ladder stand is generally greater than 20 °, and the ladder stand alone does not allow work equipment to be loaded and unloaded.

In order to make use of the existing ladder stand of a trailer, the loading and unloading aid further comprises a carrier 3, which carrier 3 is located on the side of the first tread element 211 remote from the third tread element 213, which carrier 3 is intended to support the ladder stand of the trailer, as shown in fig. 2.

During operation, the bearing piece 3 is placed on the left side of the first pedal piece 211 and close to the trailer, the right end of the ladder stand is erected on the bearing piece 3, at the moment, the top surface of the ladder stand is basically flush with the top surface of the first pedal piece 211, the ladder stand and the pedal assembly 2 jointly form a traveling inclined plane of the operation equipment, the smooth butt joint of the ladder stand and the pedal assembly 2 is facilitated due to the arrangement of the bearing piece 3, and the volume of the loading and unloading auxiliary device can be reduced by means of the ladder stand.

It should be noted that, for different trailers, the heights of the ladder stands are different, that is, the heights of the ends of the ladder stands connected to the vehicle body are different, and for different (height) ladder stands, if the same height of the carrier 3 is used, it may be difficult to achieve the butt joint of the step assembly 2 and the ladder stand.

In order to enable the docking of step assemblies 2 of different heights to ladder stands of different heights, the loading and unloading aid comprises a plurality of carriers 3 of different heights.

For ladders of a first height, the loading and unloading aid is supported with the carriers 3 of a second height, and the pedal assembly 2 comprises a first pedal member 211, two second pedal members 212 and a third pedal member 213 for docking the pedal assembly 2 with the ladder of the first height. For ladders of a third height, the loading and unloading aid employs a carrier 3 of a fourth height, and the pedal assembly 2 comprises a first pedal member 211, three second pedal members 212 and a third pedal member 213 to enable docking of the pedal assembly 2 with the ladder of the third height. Wherein the third height is higher than the first height, and the fourth height is higher than the second height. The two conditions form a substantially uniform inclination angle of the running incline. In this way, the carriers 3 of different heights can be replaced according to actual needs, so that different ladders can be adapted.

Different from this loading and unloading auxiliary device include the setting mode that a plurality of highly different holds carrier 3, hold carrier 3's height and can set up to adjustable, can adjust the cat ladder of holding carrier 3, the not co-altitude of adaptation according to actual need.

As shown in fig. 2 and 6, the bearing member 3 includes a bearing body 31 and a first pad group 32, the first pad group 32 includes at least one first pad 321, and the first pad group 32 realizes height adjustment by increasing or decreasing the number of the first pads 321 and/or replacing the first pads 321 with different heights. When the overall height of the first cushion block group 32 is increased, the height of the bearing member 3 is also increased, so that it is possible to accommodate ladders of different heights without having to replace the bearing member 3 as a whole.

As shown in fig. 6, the first pad set 32 is disposed above the bearing body 31, the first pad set 32 is detachably connected to the bearing body 31, the first pad set 32 is provided with a first hole structure, the bearing body 31 is provided with a second hole structure, and the first pad set 32 is detachably connected to the bearing body 31 by fasteners penetrating through the first hole structure and the second hole structure.

In addition, the connection mode between two adjacent first pads 321 above and below the first pad group 32 is not limited. For example, the detachable connection of two adjacent first spacers 321 is realized by a fastener; for example, the uppermost one of the first pads 321 is an upper pad, the lowermost one is a lower pad, and the middle pad is located between the upper pad and the lower pad, and the fastening member is only inserted into the upper pad and the lower pad and does not pass through the middle pad.

Different from the way of adjusting the height of the bearing member 3 by the first cushion block group 32, the bearing member 3 includes a bearing body 31 and a first telescopic member; the bearing body 31 is fixedly connected with a first telescopic piece, and the first telescopic piece is telescopic along the vertical direction.

The first and second telescoping members (described later) may be telescopic structures such as hydraulic cylinders and electric cylinders. At this time, one end of the first telescopic member may be installed inside the carrier body 31 or at one end of the carrier body 31.

Like this, hold the support that carrier 3 realized different cat ladders through the co-altitude, through the combination of the step part 21 of different quantity and supporting seat 11, realize the butt joint of footboard subassembly 2 with different (height) cat ladders to the cat ladder of different (height), the homoenergetic forms the driving inclined plane that is less than 20, and the getting on and off of the operation equipment of being convenient for can be applicable to multiple trailer, extensive applicability.

As shown in fig. 4 and 7, the height of the supporting seat 11 may also be set to be adjustable, specifically, the supporting seat 11 includes a supporting body 111 and a second pad group 112, the second pad group 112 includes at least one second pad 1121, and the second pad group 112 realizes height adjustment by increasing or decreasing the number of the second pads 1121 and/or replacing the second pads 1121 with different heights; alternatively, the first and second electrodes may be,

the support base 11 comprises a support body 111 and a second telescopic member; the support body 111 is fixedly connected with a second telescopic piece, and the second telescopic piece is telescopic along the vertical direction.

The second set of pads 112 is arranged in a manner similar to the first set of pads 32 and will not be described in detail herein.

Like this, the height of supporting seat 11 can be adjusted according to actual need, can reduce the space that supporting seat 11 occupy when warehousing and transportation through the adjustment height.

As shown in fig. 1, in order to enhance the structural stability of the loading/unloading assist apparatus, support seats 11 are provided at adjacent positions of two adjacent step members 21, and the support seats 11 are detachably connected to the two adjacent step members 21, respectively.

For example, as shown in fig. 4, the second pedal member 212 adjacent to the first pedal member 211 is provided with a supporting seat 11 at a position adjacent to the first pedal member 211, and the adjacent ends of the first pedal member 211 and the second pedal member 212 are both erected on the supporting seat 11 and detachably connected to the supporting seat 11.

Of course, two adjacent pedal members 21 can be detachably connected (directly or indirectly), which can also enhance the structural stability of the two adjacent pedal members 21.

As shown in FIG. 5, the end surfaces of the adjacent ends of the second tread member 212 and the third tread member 213 adjacent to the third tread member 213 are in contact, and a fastener is passed through the adjacent ends of the second tread member 212 and the third tread member 213 and detachably connects the second tread member 212 and the third tread member 213.

In this case, a detachable connection between the carrier 3 and the first tread element 21 may be provided, without limitation.

As shown in fig. 2 and 7, the top end of the supporting seat 11 is provided with a first inclined surface, and the pedal members 21 together form an inclined traffic inclined surface, and the first inclined surface is parallel to the traffic inclined surface.

At this moment, the thickness (the thickness direction is the straight line direction that is perpendicular to the driving inclined plane) of a plurality of step spare 21 is unanimous basically, and after step spare 21 was dismantled with corresponding supporting seat 11, the whole shape of step spare 21 was comparatively regular, and the stack or the position when being convenient for store in a warehouse and transporting are arranged, and the space that occupies is little, and the practicality is strong.

As shown in fig. 7, the supporting base 11 includes a top plate 1111 and a plurality of columns 1112 with different heights, wherein the plurality of columns 1112 are uniformly distributed at the bottom of the top plate 1111 and are fixedly connected to the top plate 1111. Thus, the weight of the support base 11 can be reduced to some extent.

When the support base 11 includes the support body 111 and the second pad set 112, or the support base 11 includes the support body 111 and the second expansion member, the support body 111 includes the top plate 1111 and the column 1112.

At this time, the top of the cylinder 1112 may be set to be a second slope, the top plate 1111 may be set to be a flat plate, and the slope of the first slope at the top end of the support base 11 is determined by the second slope. The support body 111 further includes a bottom plate 1113, the bottom plate 1113 is located at the lower end of all the columns 1112 and is fixedly connected with the lower end of all the columns 1112, two adjacent columns 1112 may be connected by a connection column, and each column may be configured as a hollow structure, such as a rectangular tube.

The first and second blocks 321 and 1121 may be provided in a structure similar to that of the support body 111, and will not be described in detail herein.

As shown in fig. 2, the pedal member 21 includes a plurality of first plate bodies 2113, a frame 2114 and a plurality of second plate bodies 2115, the plurality of first plate bodies 2113 are spaced apart in the left-right direction and fixedly connected to the top end of the frame 2114, the plurality of second plate bodies 2115 are spaced apart in the left-right direction and fixedly connected to the bottom end of the frame 2114, and at least one second plate body 2115 is connected to a corresponding support base 11.

At this time, the first plate 2113 and the second plate 2115 are both parallel to the first inclined plane, each part of the step plate 21 may be connected by welding, the frame 2114 includes a plurality of structural members connected end to end in sequence, the frame 2114 is further provided with a plurality of reinforcing strips, and the reinforcing strips are respectively connected to the plurality of first plates 2113 or the plurality of second plates 2115.

In this case, the pedal member 21 has a hollow structure while ensuring the structural rigidity of the pedal member 21, and the overall weight of the pedal member 21 can be reduced.

As shown in fig. 2 and 5, pedal members 21 are provided with two engaging structure 214, and two engaging structures 214 are provided on both sides of each pedal member 21 in the width direction, and the engaging structures 214 are rotatably connected to the side walls of frame 2114. The ear structure 214 can be used for hand-held application of force or suspension.

Therefore, the force application is convenient, the pedal part 21 and the supporting seat 11 can be conveniently carried, the structure is simple, and the practicability is high.

In other embodiments, as shown in fig. 3 and 4, in distinction from the way in which the ladder stand is supported by the carrier 3 in the above-described embodiment, the first step member 211 includes a first step body 2111 and a bearing portion 2112, the bearing portion 2112 is located at the left end of the first step body 2111, the bearing portion 2112 includes a second face structure for abutting against the bottom of the free end of the ladder stand, the first step body 2111 includes a third face structure for forming a traffic slope, the second face structure is located at the left end of the third face structure and lower than the left end of the third face structure, the second face structure is extended in the left-right direction, and when the free end of the ladder stand is supported on the bearing portion 2112, the upper surface of the ladder stand is substantially flush with the second face structure.

Like this, need not to set up solitary carrier 3 and also can realize the support to the cat ladder, security and stability also can ensure, simple structure, the practicality is strong.

In the description of the present specification, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms can be understood in a specific case to those of ordinary skill in the art.

In the description herein, references to the terms "an embodiment," "one embodiment," "some embodiments," "exemplary" and "one embodiment," etc., mean that a particular feature, structure, etc., described in connection with the embodiment or embodiments is included in at least one embodiment or embodiment. The above schematic representations do not necessarily refer to the same embodiment or implementation. The particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or implementations.

The terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present invention.

Claims (10)

1. A handling aid, characterized by comprising a support assembly (1) and a pedal assembly (2); the supporting assembly (1) comprises a plurality of supporting seats (11), the supporting seats (11) are arranged at intervals along the same direction, and the heights of the supporting seats (11) are sequentially reduced or increased progressively along the arrangement direction;

the pedal assembly (2) comprises a plurality of pedal pieces (21), the pedal pieces (21) are respectively erected on the corresponding supporting seats (11), and the pedal pieces (21) jointly form a driving slope and form a first end with a preset height away from the ground and a second end supported on the ground; a plurality of including the first step piece (211) that is located higher one end and the third step piece (213) that is located lower one end in step piece (21), first step piece (211) with correspond the detachable fixed connection of supporting seat (11).

2. Loading/unloading aid according to claim 1, characterized in that a plurality of said tread elements (21) further comprises at least one second tread element (212) in an intermediate position, said second tread element (212) being mounted on the corresponding support (11), said second tread element (212) and said third tread element (213) being removably and fixedly connected to the corresponding support (11), respectively; one end, close to the second pedal piece (212), of the third pedal piece (213) is erected on the corresponding support seat (11), a first face structure (2131) is arranged at the bottom of the other end of the third pedal piece (213), and the first face structure (2131) is used for being supported on the ground.

3. Handling aid according to claim 1, characterised in that it further comprises a carrier (3), which carrier (3) is located on the side of the first tread element (211) remote from the third tread element (213), which carrier (3) is intended to support a ladder stand of a trailer.

4. Handling aid according to claim 3, characterized by comprising a plurality of said carriers (3) of different heights; alternatively, the first and second electrodes may be,

the bearing part (3) comprises a bearing body (31) and a first cushion block group (32), the upper end or the lower end of the bearing body (31) is connected with the first cushion block group (32), the first cushion block group (32) comprises at least one first cushion block (321), and the first cushion block group (32) realizes height adjustment by increasing or decreasing the number of the first cushion blocks (321) and/or replacing the first cushion blocks (321) with different heights; alternatively, the first and second electrodes may be,

the carrier (3) comprises a carrier body (31) and a first telescopic member; the bearing body (31) is fixedly connected with the first telescopic piece, and the first telescopic piece stretches along the vertical direction.

5. Handling aid according to claim 1, c h a r a c t e r i z e d in that the support (11) comprises a support body (111) and a second set of pads (112), the second set of pads (112) comprising at least one second pad (1121), the second set of pads (112) being height adjustable by increasing or decreasing the number of second pads (1121) and/or replacing the second pads (1121) of different heights; alternatively, the first and second electrodes may be,

the supporting seat (11) comprises a supporting body (111) and a second telescopic piece; the support body (111) is fixedly connected with the second telescopic piece, and the second telescopic piece stretches along the vertical direction.

6. Loading and unloading aid according to claim 1, characterized in that the first step part (211) comprises a first step body (2111) and a carrying part (2112), the carrying part (2112) being located at the end of the first step body (2111) remote from the third step part (213), the carrying part (2112) being intended to support a ladder of a trailer.

7. Loading and unloading assist device according to any one of claims 1 to 6, characterized in that the support seats (11) are provided at adjacent positions of two adjacent footboard elements (21), the support seats (11) being detachably connected to the two adjacent footboard elements (21), respectively; and/or two adjacent pedal parts (21) are detachably connected.

8. Handling aid according to any one of claims 1-6, characterised in that the top end of the support (11) is provided with a first inclined surface, which is parallel to the traffic inclined surface.

9. Handling aid according to any one of claims 1-6, characterised in that the support (11) comprises a top plate (1111) and a number of columns (1112), which columns (1112) are evenly distributed at the bottom of the top plate (1111) and are fixedly connected to the top plate (1111).

10. Loading and unloading assist device according to one of claims 1 to 6, characterized in that the step part (21) comprises a plurality of first plates (2113), a frame (2114) and a plurality of second plates (2115), a plurality of said first plates (2113) being spaced apart along the alignment direction and being fixedly connected to the top end of the frame (2114), a plurality of said second plates (2115) being spaced apart along the alignment direction and being fixedly connected to the bottom end of the frame (2114), at least one of said second plates (2115) being connected to the corresponding said support (11).

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