Folding ladder stand device capable of being used as bearing surface

Abstract

The utility model discloses a folding ladder stand device capable of being used as a bearing surface, and relates to the technical field of semitrailer ladder stands. The carriage comprises a carriage body and a plurality of ladder stand bodies, a plurality of ladder stand lugs are fixedly arranged at the tail end of the carriage body, ladder stand rotating shafts are fixedly installed at one ends of the ladder stand bodies, sleeves are arranged on the outer walls of the ladder stand rotating shafts in a sliding mode, and a carriage rotating shaft is rotatably installed between every two adjacent ladder stand lugs. The outer walls of the multiple carriage rotating shafts are fixedly provided with linkage butt straps. According to the utility model, the ladder stand body which is horizontally aligned with the cargo carrying surface of the carriage body after being folded is arranged, so that the space of the cargo carrying surface of the carriage body is not occupied, and under the condition that the total length of a vehicle is consistent, the size of the cargo carrying surface of the vehicle using the ladder stand body is larger, and the ladder stand body can serve as a part of the cargo carrying surface to load more cargoes; and a fixing ring or a container lock and other devices can be placed on the upper plane of the crawling ladder body, so that the diversity of cargos is met.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-trailer ladders, in particular to a folding ladder device which can be used as a bearing surface. Background Art

[0002] The rear ladder of a low-bed semi-trailer is generally a flat-bed structure. When in use, the ladder is lowered to establish a sloped passage between the vehicle's cargo surface and the ground, which is convenient for loading goods or getting on and off the vehicle. After use, the ladder is folded up and placed at the rear.

[0003] However, this structural ladder will occupy a portion of the cargo platform space, and the height is relatively high when folded, which makes vehicle passability poor. Utility Model Content

[0004] In order to solve the problems in the prior art that the climbing frame of a semi-trailer occupies part of the cargo platform space and the climbing frame is too high after being folded, which affects the passability of the semi-trailer; the purpose of the utility model is to provide a folding ladder device that can be used as a load-bearing surface.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a folding ladder device that can be used as a load-bearing surface, comprising a carriage body and several ladder bodies, wherein the tail end of the carriage body is fixedly provided with several ladder ears, one end of several of the ladder bodies is fixedly installed with a ladder rotating shaft, the outer walls of several of the ladder rotating shafts are slidably provided with a sleeve, wherein a carriage rotating shaft is rotatably installed between two adjacent ladder ears, and the outer walls of several of the carriage rotating shafts are fixedly installed with a linking plate, and one end of one of the linking plates is fixedly connected to the outer wall of a sleeve.

[0006] Preferably, a pin is movably inserted into one end of each of the ladder shafts, and one end of the pin is movably plugged into a pin hole at the rear end of the carriage body.

[0007] Preferably, the outer walls of several of the sleeves are threadedly mounted with locking bolts, both ends of several of the ladder shafts are provided with threaded holes, and one end of the locking bolt is threadedly connected to the inner wall of the threaded hole.

[0008] Preferably, a plurality of evenly distributed rubber seats are fixedly mounted on one side of the plurality of ladder bodies, and one side of the plurality of rubber seats is in movable contact with the cargo loading surface of the carriage body.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] 1. In the present invention, by providing a ladder body that is horizontally aligned with the cargo surface of the vehicle body when folded, the cargo surface space of the vehicle body is not occupied. Moreover, when the total length of the vehicle is the same, the cargo surface of the vehicle using the ladder body is larger. The ladder body can serve as part of the cargo surface, allowing for more cargo to be loaded. In addition, the upper surface of the ladder body can be used to place devices such as fixing rings or container locks, thereby meeting the diversity of cargo loading.

[0011] 2. In the present invention, since the ladder body is horizontally aligned with the cargo surface of the vehicle body after being folded, the height is reduced, thereby ensuring the passability of the semi-trailer. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 This is a structural diagram of the ladder body of the utility model in the lowered state.

[0014] Figure 2 This is a structural schematic diagram of the utility model ladder body in the folded state.

[0015] Figure 3 It is a rear view of the ladder body of the utility model in the folded state.

[0016] Figure 4 It is a rear view of the ladder body of the utility model in the lowered state.

[0017] Figure 5 This is a rear view of the utility model in a lowered state in which the ladder body is moved to both sides and widened.

[0018] In the figure: 1. Carriage body; 2. Ladder ear seat; 3. Ladder body; 4. Ladder shaft; 5. Carriage shaft; 6. Linking plate; 7. Pin; 31. Rubber seat; 41. Sleeve; 42. Locking bolt; 43. Threaded hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example: Figure 1-5 As shown, the utility model provides a folding ladder device that can be used as a bearing surface, including a carriage body 1 and several ladder bodies 3, the tail end of the carriage body 1 is fixedly provided with several ladder ears 2, one end of several ladder bodies 3 is fixedly installed with a ladder shaft 4, the outer walls of several ladder shafts 4 are slidably provided with sleeves 41, wherein a carriage shaft 5 is rotatably installed between two adjacent ladder ears 2, and the outer walls of several carriage shafts 5 are fixedly installed with linking plates 6, one end of one linking plate 6 is fixedly connected to the outer wall of a sleeve 41, by providing a sleeve 41 that can slide on the ladder shaft 4, the ladder shaft 4 on the ladder body 3 can slide in the sleeve 41, so that the ladder body 3 can move to both sides when it is lowered, thereby achieving widening (reference Figure 5 ), by setting the ladder shaft 4, the carriage shaft 5 and the connecting plate 6, the ladder body 3 can be flipped with the axis of the carriage shaft 5 as the center of the circle through the ladder shaft 4, the sleeve 41 and the connecting plate 6, thereby realizing the folding and lowering of the ladder body 3. When the ladder body 3 is folded, it is horizontally aligned with the cargo surface of the carriage body 1.

[0021] One end of each ladder shaft 4 is movably inserted with a pin shaft 7, and one end of the pin shaft 7 is movably plugged into the pin hole at the rear end of the carriage body 1. By setting the pin shaft 7, when the ladder body 3 is folded, the ladder body 3 can be fixed when the pin shaft 7 is inserted into the pin hole at the rear end of the carriage body 1.

[0022] The outer walls of several sleeves 41 are threadedly installed with locking bolts 42, and both ends of several ladder shafts 4 are provided with threaded holes 43. One end of the locking bolt 42 is threadedly connected to the inner wall of the threaded hole 43. By setting the locking bolt 42 and the threaded hole 43, when the locking bolt 42 is screwed into the inside of the threaded hole 43, the sleeve 41 can be fixed on the ladder shaft 4, and the ladder body 3 cannot slide at this time.

[0023] Several evenly distributed rubber seats 31 are fixedly installed on one side of the ladder bodies 3. One side of the rubber seats 31 is in active contact with the cargo loading surface of the carriage body 1. By providing the rubber seats 31, when the ladder bodies 3 are folded, the rubber seats 31 prevent the ladder bodies 3 from directly contacting the cargo loading surface of the carriage body 1, thereby reducing wear.

[0024] Working principle: When the ladder body 3 needs to be lowered, the operator first pulls the multiple pins 7 to disengage the multiple pins 7 from the pin holes at the rear end of the carriage body 1, and then manually pulls the ladder body 3. The ladder body 3 is turned downward with the axis of the carriage shaft 5 as the center through the ladder shaft 4, the sleeve 41 and the connecting plate 6, thereby realizing the lowering of the ladder body 3. The ladder body 3 can be folded up by flipping the ladder body 3 in the opposite direction, and then the pins 7 are inserted into the pin holes at the rear end of the carriage body 1 to fix the folded ladder body 3.

[0025] When the ladder body 3 is in the lowered state, the locking bolt 42 can be rotated counterclockwise to disengage the locking bolt 42 from the threaded hole 43, and the ladder bodies 3 at both ends can be pulled horizontally. The ladder shaft 4 on the ladder body 3 slides in the sleeve 41, and then the locking bolt 42 is screwed into the threaded hole 43 to fix the sleeve 41 and the ladder shaft 4, so that the ladder body 3 can be moved to both sides after being lowered, thereby achieving widening.

[0026] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A folding ladder device that can be used as a load-bearing surface, comprising a carriage body (1) and a plurality of ladder bodies (3), characterized in that: A plurality of ladder lugs (2) are fixedly provided at the rear end of the carriage body (1), a ladder shaft (4) is fixedly installed at one end of a plurality of the ladder bodies (3), a sleeve (41) is slidably provided on the outer wall of a plurality of the ladder shafts (4), a carriage shaft (5) is rotatably installed between two adjacent ladder lugs (2), a linking plate (6) is fixedly installed on the outer wall of a plurality of the carriage shafts (5), and one end of one of the linking plates (6) is fixedly connected to the outer wall of a sleeve (41).

2. A folding ladder device that can be used as a bearing surface as claimed in claim 1, characterized in that: One end of each of the ladder rotating shafts (4) is movably inserted with a pin shaft (7), and one end of the pin shaft (7) is movably inserted into a pin hole at the rear end of the carriage body (1).

3. A folding ladder device that can be used as a bearing surface as claimed in claim 1, characterized in that: The outer walls of the sleeves (41) are threadedly mounted with locking bolts (42), and both ends of the ladder shafts (4) are provided with threaded holes (43). One end of the locking bolts (42) is threadedly connected to the inner wall of the threaded hole (43).

4. A folding ladder device that can be used as a bearing surface as claimed in claim 1, characterized in that: A plurality of evenly distributed rubber seats (31) are fixedly mounted on one side of the plurality of ladder bodies (3), and one side of the plurality of rubber seats (31) is in movable contact with the cargo loading surface of the carriage body (1).

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