CN221340370U

CN221340370U - Low flat-bed semitrailer with folding cat ladder

Info

Publication number: CN221340370U
Application number: CN202323309425.4U
Authority: CN
Inventors: 孔凡华; 张甲秋; 王清山
Original assignee: Shandong Juyuan Automobile Polytron Technologies Inc
Current assignee: Shandong Juyuan Automobile Polytron Technologies Inc
Priority date: 2023-12-05
Filing date: 2023-12-05
Publication date: 2024-07-16
Anticipated expiration: 2033-12-05

Abstract

The utility model relates to the technical field of folding crawling ladders and discloses a low flat semi-trailer with a folding crawling ladder, which comprises a frame, wherein folding shrinkage mechanisms are arranged in and on the right side of the frame, fixing mechanisms are arranged on the right side of the frame, the folding shrinkage mechanisms comprise folding assemblies and shrinkage assemblies, a first motor is started through the arranged folding shrinkage mechanisms, a second triangle is driven to rotate by a first triangle, a second triangle is then driven to rotate by a second triangle, a connecting rod is driven to rotate by the first triangle, the second connecting rod is driven to rotate by the first triangle, so that a second folded plate is driven to rotate downwards, the first folded plate and the second folded plate are overlapped, the folding of the first folded plate and the second folded plate is completed, the second motor is started to rotate by a second motor, and a sliding plate is driven to move by a screw, so that the whole folding assembly is retracted into the frame, space is further saved, and shrinkage of the first folded plate and the second folded plate is also completed.

Description

Low flat-bed semitrailer with folding cat ladder

Technical Field

The utility model relates to the technical field of folding crawling ladders, in particular to a low-bed semitrailer with a folding crawling ladder.

Background

Low bed semitrailers are commonly used for transporting heavy vehicles (such as tractors, buses, special vehicles and the like), rail vehicles, mining machinery, forestry machinery, engineering machinery (such as excavators, bulldozers, loaders, pavers, cranes and the like) and other heavy-duty goods, the lower the center of gravity of the low bed semitrailer is, the better the stability and safety are, the higher the capability of transporting ultrahigh goods and passing overhead obstacles is, and the like, and when the low bed semitrailer is used for transporting vehicles, a ladder stand is often used.

According to the disclosed low flat semi-trailer hydraulic folding cat ladder of patent net (grant bulletin is CN 213413604U) in what describe "a low flat semi-trailer hydraulic folding cat ladder, including the frame, the lateral wall of frame is provided with accomodates the groove, accomodate the inslot and be provided with the cat ladder board, accomodate the inslot and be provided with the drive cat ladder board and slide and incline actuating mechanism, accomodate the downside of groove and be provided with the control groove, be provided with the rotor plate in the control groove. "

With respect to the above description, the applicant believes that the following problems exist:

in the using process, the device drives the threaded rod through the motor so as to drive the rotating slide plate to move, thereby taking the whole ladder plate into the frame, and then drives the gear to rotate through the rack so as to close the rotating plate.

Disclosure of utility model

The utility model aims to provide a low flat-bed semitrailer with a folding cat ladder, which solves the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the low flat semi-trailer with the folding cat ladder comprises a frame, wherein a folding shrinkage mechanism is arranged in the frame and on the right side of the frame, and a fixing mechanism is arranged on the right side of the frame;

The folding and contracting mechanism comprises a folding component and a contracting component, wherein the contracting component is arranged on the left side of the folding component and is convenient for folding and contracting the folding plate.

Preferably, the shrink subassembly includes No. two motors, no. two motor fixed connection is inside the frame, no. two motor output fixedly connected with screw rod, screw rod outside threaded connection has the slide, the inside fixedly connected with traveller of frame, slide right side rotation is connected with the hydraulic stem, is convenient for with No. one folded plate and No. two folded plates income to the frame inside.

Preferably, the shrinkage subassembly includes No. two motors, no. two motor fixed connection is inside the frame, no. two motor output fixedly connected with screw rod, screw rod outside threaded connection has the slide, the inside fixedly connected with slide column of frame is convenient for with No. one folded plate and No. two folded plate income to the frame inside.

Preferably, the folding assembly comprises a folded plate, the folded plate is rotationally connected to the right side of the sliding plate, the folded plate is rotationally connected to the right side of the folded plate and is connected with a second folded plate, the front of the folded plate is fixedly connected with a fixing plate, the front of the fixing plate is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a worm, the worm is externally meshed with a worm wheel, the back of the worm is rotationally connected with a set square, the outer side of the set square is rotationally connected with a second set square, one end of the second set square, which is far away from the set square, is rotationally connected with a first connecting rod, and the back of the set square is rotationally connected with a second connecting rod, so that the folded plate and the second folded plate are conveniently contracted and folded.

Preferably, one end of the second connecting rod far away from the first triangular plate is rotationally connected to the outer side of the second folded plate, and one end of the first connecting rod far away from the second triangular plate is rotationally connected to the inner side of the fixed plate, so that the second folded plate is conveniently driven to rotate downwards.

Preferably, the fixing mechanism comprises a rotating plate, the rotating plate is rotationally connected to the right side of the frame, a spring is fixedly connected to the inside of the rotating plate, a first rack is fixedly connected to the right side of the spring, a gear is meshed to the outside of the first rack, a second rack is meshed to one side, away from the first gear, of the gear, and the rotating plate and the frame are convenient to fix.

Preferably, the first rack and the second rack are provided with grooves at positions corresponding to the rotating plate, and the first rack and the second rack are slidably connected in the grooves, so that the second rack is conveniently clamped inside the frame.

Compared with the prior art, the utility model provides the low flat semi-trailer with the folding cat ladder, which has the following beneficial effects:

1. This low flat semi-trailer with folding cat ladder, through the folding shrink mechanism that sets up, start a motor, drive No. two set-square rotation by No. two set-square simultaneously, drive No. two connecting rods rotation by No. two set-square again, no. two connecting rods rotation is driven to No. one set-square simultaneously, thereby drive No. two folded plates and rotate downwards, thereby make No. one folded plate overlap with No. two folded plates, thereby accomplish the folding to No. one folded plate and No. two folded plates, rethread starts No. two motors, drive the screw rod rotation by No. two motors, drive the slide by the screw rod again and remove, thereby make whole folding assembly income to the frame inside, thereby further saved the space, the shrink to No. one folded plate and No. two folded plates has also been accomplished simultaneously.

2. This low flat semi-trailer with folding cat ladder, through the fixed establishment who sets up, upwards rotate the revolving plate, simultaneously, press a rack, drive gear rotation by a rack again, the gear drives No. two racks and removes simultaneously to make No. two racks totally receive inside the revolving plate, reuse both hands loose a rack, thereby receive spring force, no. two racks then can block into the frame inside, thereby accomplish the further fixed to the device, prevent to drop because of mistake touch switch a folded plate and No. two folded plates in the transportation.

Drawings

For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it will be apparent that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art:

FIG. 1 is a schematic view of the appearance structure of the present utility model;

FIG. 2 is a schematic structural view of the appearance of the folding and shrinking mechanism of the present utility model;

FIG. 3 is a schematic view of the unfolded structure of the folding assembly of the present utility model;

FIG. 4 is a schematic view of the structure of the shrink assembly of the present utility model;

Fig. 5 is a schematic structural view of the unfolding structure of the fixing mechanism of the utility model.

In the figure: 1. a frame; 2. a folding and shrinking mechanism; 3. a fixing mechanism; 21. a folding assembly; 22. a retraction assembly; 211. a first folded plate; 212. a second folded plate; 213. a fixing plate; 214. a motor I; 215. a worm; 216. a worm wheel; 217. a first triangle; 218. a second triangle; 219. a first connecting rod; 2110. a second connecting rod; 221. a motor II; 222. a screw; 223. a spool; 224. a slide plate; 225. a hydraulic rod; 31. a rotating plate; 32. a spring; 33. a first rack; 34. a gear; 35. and a second rack.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Embodiment one:

Referring to fig. 1-5, the present utility model provides a technical solution: the low flat semi-trailer with the folding cat ladder comprises a frame 1, wherein a folding and contracting mechanism 2 is arranged in the frame 1 and on the right side, and a fixing mechanism 3 is arranged on the right side of the frame 1;

The folding and shrinking mechanism 2 comprises a folding assembly 21 and a shrinking assembly 22, wherein the shrinking assembly 22 is arranged on the left side of the folding assembly 21, so that folding plates can be conveniently folded and unfolded.

Further, the shrinkage assembly 22 comprises a motor number two 221, the motor number two 221 is fixedly connected inside the frame 1, the output end of the motor number two 221 is fixedly connected with a screw rod 222, a sliding plate 224 is connected to the screw rod 222 through external threads, a sliding column 223 is fixedly connected inside the frame 1, and a hydraulic rod 225 is rotatably connected to the right side of the sliding plate 224, so that the folding plate number one 211 and the folding plate number two 212 can be conveniently received inside the frame 1.

Further, the shrinkage assembly 22 comprises a second motor 221, the second motor 221 is fixedly connected inside the frame 1, the output end of the second motor 221 is fixedly connected with a screw 222, a sliding plate 224 is connected to the screw 222 through external threads, and a sliding column 223 is fixedly connected inside the frame 1, so that the first folded plate 211 and the second folded plate 212 can be conveniently retracted into the frame 1.

Further, the folding assembly 21 comprises a first folded plate 211, the first folded plate 211 is rotationally connected to the right side of the sliding plate 224, the right side of the first folded plate 211 is rotationally connected with a second folded plate 212, the front surface of the first folded plate 211 is fixedly connected with a fixing plate 213, the front surface of the fixing plate 213 is fixedly connected with a first motor 214, the output end of the first motor 214 is fixedly connected with a worm 215, a worm wheel 216 is externally meshed with the worm 215, the back of the worm 215 is rotationally connected with a first triangular plate 217, the outer side of the first triangular plate 217 is rotationally connected with a second triangular plate 218, one end, far away from the first triangular plate 217, of the second triangular plate 218 is rotationally connected with a first connecting rod 219, and the back of the first triangular plate 217 is rotationally connected with a second connecting rod 2110, so that the first folded plate 211 and the second folded plate 212 can be conveniently contracted and folded.

Further, one end of the second connecting rod 2110 far away from the first triangle 217 is rotatably connected to the outside of the second folded plate 212, and one end of the first connecting rod 219 far away from the second triangle 218 is rotatably connected to the inside of the fixing plate 213, so as to conveniently drive the second folded plate 212 to rotate downwards.

Embodiment two:

Referring to fig. 5, in combination with the first embodiment, further obtained, the fixing mechanism 3 includes a rotating plate 31, the rotating plate 31 is rotatably connected to the right side of the frame 1, a first rack 33 is fixedly connected to the right side of a spring 32 and fixedly connected to the inside of the rotating plate 31, a gear 34 is meshed with the outside of the first rack 33, and a second rack 35 is meshed with a side of the gear 34 away from the first gear 34, so that the rotating plate 31 and the frame 1 are conveniently fixed.

Further, grooves are formed in positions, corresponding to the rotating plate 31, of the first rack 33 and the second rack 35, and the first rack 33 and the second rack 35 are slidably connected in the grooves, so that the second rack 35 is conveniently clamped inside the frame 1.

In the actual operation process, when the device is used, firstly, when the device needs to shrink after being used, folding shrinkage mechanism 2 is arranged, motor 214 is started, worm 215 is driven by motor 214 to rotate, worm 215 is then driven by worm 215 to rotate, thereby driving set square 217 to rotate by worm 216, set square 217 simultaneously drives set square 218 to rotate, set square 218 further drives connecting rod 219 to rotate, set square 217 simultaneously drives connecting rod 2110 to rotate, thereby driving folded plate 212 to rotate downwards, thereby enabling folded plate 211 to overlap folded plate 212, thereby completing folding of folded plate 211 and folded plate 212, motor 221 is started again, screw 222 is driven by motor 221 to rotate, slide plate 224 is driven by screw 222 to move, thereby enabling whole folding assembly 21 to be inside frame 1, further saving space, simultaneously also completing shrinkage of folded plate 211 and folded plate 212, further fixing the device is required, fixing mechanism 3 is arranged, rotating plate 31 and gear rack 33 is driven by rack 33 to rotate, rack 33 is driven by rack 33 to rotate rack 33, rack 33 is further moved to the inside frame 35, and rack 35 is prevented from moving down in the inside frame 35.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.

Claims

1. The utility model provides a low flat semi-trailer with folding cat ladder, includes frame (1), its characterized in that: a folding and contracting mechanism (2) is arranged in the frame (1) and on the right side, and a fixing mechanism (3) is arranged on the right side of the frame (1);

the folding and shrinking mechanism (2) comprises a folding component (21) and a shrinking component (22), and the shrinking component (22) is arranged on the left side of the folding component (21).

2. The low bed semitrailer with a folding ladder of claim 1, wherein: the shrinkage assembly (22) comprises a second motor (221), the second motor (221) is fixedly connected inside the frame (1), the output end of the second motor (221) is fixedly connected with a screw rod (222), the screw rod (222) is externally connected with a sliding plate (224) in a threaded manner, a sliding column (223) is fixedly connected inside the frame (1), and the right side of the sliding plate (224) is rotationally connected with a hydraulic rod (225).

3. A low bed semitrailer with a folding ladder as claimed in claim 2, wherein: the sliding column (223) and the sliding plate (224) are provided with grooves at the corresponding positions, and the sliding plate (224) is connected in the grooves in a sliding way.

4. A low bed semitrailer with a folding ladder as claimed in claim 2, wherein: folding subassembly (21) include a folded plate (211), a folded plate (211) rotate and connect on slide (224) right side, a folded plate (211) right side rotates and is connected with No. two folded plates (212), a folded plate (211) front fixedly connected with fixed plate (213), fixed plate (213) front fixedly connected with motor (214), motor (214) output fixedly connected with worm (215), worm (215) external engagement has worm wheel (216), worm (215) back rotates and is connected with set square (217), set square (217) outside rotates and is connected with set square (218) No. two, set square (218) are kept away from the one end rotation of set square (217) and are connected with connecting rod (219) No. one, set square (217) back rotates and is connected with No. two connecting rods (2110).

5. The low bed semitrailer with a folding ladder of claim 4, wherein: one end of the second connecting rod (2110) far away from the first triangular plate (217) is rotationally connected to the outer side of the second folded plate (212), and one end of the first connecting rod (219) far away from the second triangular plate (218) is rotationally connected to the inner side of the fixed plate (213).

6. The low bed semitrailer with a folding ladder of claim 1, wherein: the fixed establishment (3) is including revolving board (31), revolving board (31) rotate and connect on frame (1) right side, inside fixedly connected with spring (32) of revolving board (31) spring (32) right side fixedly connected with rack (33), rack (33) external engagement has gear (34), one side meshing that gear (34) kept away from gear (34) has rack (35) No. two.

7. The low bed semitrailer with a folding ladder of claim 6, wherein: the first rack (33) and the second rack (35) are provided with grooves at positions corresponding to the rotating plate (31), and the first rack (33) and the second rack (35) are slidably connected in the grooves.