CN218287545U - Portable low flatbed semitrailer hydraulic folding crawling ladder - Google Patents

Abstract

The utility model discloses a portable low dull and stereotyped semitrailer hydraulic pressure folding cat ladder, including sweep and folding ladder, the surface mounting of sweep has two folding ladders and two pneumatic cylinders, the output of two pneumatic cylinders respectively with two folding ladder fixed connection, four dead levers of one side fixedly connected with that the sweep is close to the folding ladder, and four dead levers are two double-wisely a set of, and the one end fixedly connected with pipe of sweep is kept away from to dead lever of same group, and the inner wall sliding connection of pipe has the traveller, the utility model relates to a portable low dull and stereotyped semitrailer hydraulic pressure folding cat ladder, through setting up the dog, first spring, when the staff is accomodating the folding ladder that expandes, under the effect of first spring elasticity and the special shape of dog, make the dog can be automatic to carry on spacingly folding ladder, make the difficult landing of folding ladder, and then avoided the staff to take in the folding ladder still need to tie the condition on the safety rope of folding ladder once more appear.

Description

Portable low flatbed semitrailer hydraulic folding crawling ladder

Technical Field

The utility model relates to a hydraulic pressure folding cat ladder, in particular to portable low flat-bed semitrailer hydraulic pressure folding cat ladder.

Background

Low bed semi-trailers are commonly used to transport heavy trucks and other heavy loads, the lower their center of gravity, the better the stability and safety, and the greater the ability to transport ultra-high loads and through overhead obstacles.

The folding cat ladder of hydraulic pressure is just installing two cat ladders at the low flat-bed trailer afterbody, and mainly used helps the car to remove, and the folding cat ladder of current hydraulic pressure all is through hydraulic cylinder drive and all is the remote control setting, folds the release automatically, unusual convenient, but the folding cat ladder of hydraulic pressure on the low flat-bed trailer still has some problems when using:

1. when the hydraulic folding ladder stand is used for storing, in order to prevent the folding ladder from slipping and releasing, a worker is required to connect a safety rope on the ladder stand with a vehicle body, the ladder stand is not convenient enough, the worker is required to walk back and forth on the vehicle and under the vehicle, and the worker is easy to forget to tie the safety rope.

2. The folding cat ladder of hydraulic pressure can bump with the afterbody of automobile body when accomodating and finishing, still makes the automobile body rock easily when causing huge noise, and causes the wearing and tearing on automobile body and cat ladder surface easily.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a folding cat ladder of portable low flatbed semitrailer hydraulic pressure to solve the staff who proposes among the above-mentioned background art when being connected safety rope on the cat ladder with the automobile body convenient inadequately and the folding cat ladder of hydraulic pressure when accomodating and finishing, can collide with the afterbody of automobile body, still make the problem that the automobile body rocked easily when causing huge noise.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a folding cat ladder of portable low flatbed semitrailer hydraulic pressure, includes sweep and folding ladder, the surface mounting of sweep has two folding ladders and two pneumatic cylinders, two the output of pneumatic cylinder respectively with two folding ladder fixed connection, the sweep is close to four dead levers of one side fixedly connected with of folding ladder, four two liang of a set of, same group of dead lever the one end fixedly connected with pipe of sweep is kept away from to the dead lever, the inner wall sliding connection of pipe has the traveller, fixedly connected with dog and first spring respectively at the both ends of traveller, the traveller is close to the one end fixedly connected with pull rod of first spring, the fixed surface of sweep is connected with two fixed plates, the one end that the traveller was kept away from to the pull rod slides and runs through the fixed plate.

As an optimized technical scheme of the utility model, the cross-section of dog is trapezoidal, the shape of dog is half cone.

As an optimized technical scheme of the utility model, the size of first spring is less than the size of pipe, first spring is located the inside of pipe.

As a preferred technical scheme of the utility model, one side fixedly connected with square of pipe is kept away from to the fixed plate, the surface slip of square is inserted and is equipped with the picture peg, the square hole has been seted up to the arc surface of pull rod.

As a preferred technical scheme of the utility model, the square hole is located the inside of pipe, the size and the size looks adaptation of picture peg of square hole.

As a preferred technical scheme of the utility model, the equal fixedly connected with rectangular plate in both sides of sweep, the fixed surface of rectangular plate is connected with the slide pipe, the inner wall sliding connection of slide pipe has two sliders, two the both sides of slider are all rotated and are connected with the commentaries on classics board, four the rotation of surface of commentaries on classics board is connected with the fixed block, the fixed block is close to one side fixedly connected with second spring of slide pipe, the one end and the slide pipe fixed connection of fixed block are kept away from to the second spring, the fixed surface of folding ladder is connected with the connecting plate.

As a preferred technical scheme of the utility model, one side fixedly connected with slide bar that the fixed block is close to the slide pipe, the slide bar is kept away from the one end of fixed block and is slided and run through slide pipe and rectangular plate, the second spring housing is on the arc surface of slide bar.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a set up dog, first spring, the staff is when accomodating the folding ladder that expandes, under the effect of first spring force and the special shape of dog, make the dog can be automatic carry on spacingly to the folding ladder, make the difficult landing of folding ladder get off, and then avoided the staff as far as possible still need the condition of tying the safety rope of folding ladder once more to appear after accomodating the folding ladder, convenient staff's operation.

2. The utility model discloses a set up second spring, slider, commentaries on classics board, square, at folding ladder at the in-process of accomodating, under the effect of second spring force and the slider with change mutually supporting of board, can cushion folding ladder's impact to a certain extent, avoided folding ladder striking the sweep to make the sweep take place the condition of rocking appear when accomodating the end again as far as possible when the noise reduction, and reduced the wearing and tearing of folding ladder and sweep.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the structure at A in FIG. 1 according to the present invention;

FIG. 3 is a schematic diagram of a portion of the structure of FIG. 2 according to the present invention;

fig. 4 is a schematic structural view of the rectangular plate in fig. 1 according to the present invention.

In the figure: 1. turning a plate; 2. a folding ladder; 3. a hydraulic cylinder; 401. fixing the rod; 402. a circular tube; 403. a traveler; 404. a stopper; 405. a first spring; 406. a fixing plate; 407. a pull rod; 408. a block; 409. inserting plates; 410. a square hole; 51. a rectangular plate; 52. a slide pipe; 53. a slider; 54. rotating the plate; 55. a fixed block; 56. a second spring; 57. a connecting plate; 58. a slide bar.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-4, the utility model provides a technical scheme of portable low flat-bed semitrailer hydraulic folding cat ladder:

the first embodiment is as follows:

according to fig. 1, as shown in fig. 2 and fig. 3, a portable low flatbed semitrailer hydraulic folding ladder stand comprises a sweep 1 and two folding ladders 2, the surface of the sweep 1 is provided with two folding ladders 2 and two hydraulic cylinders 3, the output ends of the two hydraulic cylinders 3 are respectively fixedly connected with the two folding ladders 2, one side of the sweep 1 close to the folding ladders 2 is fixedly connected with four fixing rods 401, two fixing rods 401 are in group, one end of the same group of fixing rods 401 far away from the sweep 1 is fixedly connected with a round tube 402, the inner wall of the round tube 402 is slidably connected with a sliding column 403, two ends of the sliding column 403 are respectively fixedly connected with a stopper 404 and a first spring 405, the sliding column 403 is close to one end of the first spring 405, the surface of the sweep 1 is fixedly connected with two fixing plates 406, one end of the sliding column 407 far away from the sliding column 403 penetrates through the fixing plate 406, the cross section of the stopper 404 is trapezoidal, the shape of the stopper 404 is conical, the size of the first spring 405 is smaller than that of the round tube 402, the first spring 405 is located inside the round tube 402, one side of the fixing plate 406 is fixedly connected with a square block 408, the square hole 408, the size of the square hole 409 is inserted in which is inserted and the size of the square hole 410, and the square hole 410 of the square hole 409 is formed in which is formed in the semicircular hole.

When in specific use, the utility model relates to a portable low flatbed semitrailer hydraulic pressure folding cat ladder, when the staff need accomodate folding ladder 2 to the orientation of being close to sweep 1 after the starting switch, folding ladder 2 can hit dog 404, because one side that dog 404 was hit is the arc surface, dog 404 receives the striking extrusion and will drive slide 403 along the inner wall slip of slide 52, first spring 405 is in compression state this moment, up to folding ladder 2 crosses dog 404, compression state's first spring 405 rebounds rapidly this moment, dog 404 will kick-back, final folding ladder 2 will be with the opposite side contact of dog 404, because the opposite side of dog 404 is the plane, folding ladder 2 just can not roll-off easily, reach the spacing effect to folding ladder 2, when the staff needs to expand folding ladder 2, pulling pull rod 407, up to square hole 410 and picture peg 409 parallel and level, promote picture peg 409, make picture peg 409 insert in the square hole 410, reach the effect of fixed first spring 405 elasticity, and then conveniently release folding ladder 2.

Example two:

on the basis of the first embodiment, as shown in fig. 1 and 4, rectangular plates 51 are fixedly connected to two sides of a vehicle panel 1, a sliding pipe 52 is fixedly connected to the surface of each rectangular plate 51, two sliding blocks 53 are slidably connected to the inner wall of each sliding pipe 52, rotating plates 54 are rotatably connected to two sides of each sliding block 53, fixed blocks 55 are rotatably connected to the surfaces of the four rotating plates 54, a second spring 56 is fixedly connected to one side of each fixed block 55, which is close to the corresponding sliding pipe 52, a connecting plate 57 is fixedly connected to the surface of the folding ladder 2, a sliding rod 58 is fixedly connected to one side of each fixed block 55, which is close to the corresponding sliding pipe 52, one end of each sliding rod 58, which is far away from the corresponding fixed block 55, penetrates through the corresponding sliding pipe 52 and the rectangular plate 51 in a sliding manner, and the second spring 56 is sleeved on the arc surface of the corresponding sliding rod 58.

When specifically using, the utility model relates to a folding cat ladder of portable low flat-bed semitrailer hydraulic pressure, folding ladder 2 is at the in-process of accomodating, connecting plate 57 can strike square 408, square 408 receives the extrusion and can drive slide bar 58 and slide, second spring 56 is in compression state this moment, wherein second spring 56 plays the effect that makes things convenient for square 408 round trip movement, two sliders 53 chances are removed to the direction of keeping away from each other this moment, commentaries on classics board 54 can take place to rotate under slider 53's removal, under the effect of second spring 56 elasticity, and then reach the effect of buffering folding ladder 2 impact.

In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a folding cat ladder of portable low flatbed semitrailer hydraulic pressure, includes sweep (1) and folding ladder (2), its characterized in that: the surface mounting of sweep (1) has two folding ladder (2) and two pneumatic cylinder (3), two the output of pneumatic cylinder (3) respectively with two folding ladder (2) fixed connection, sweep (1) is close to four dead lever (401) of one side fixedly connected with of folding ladder (2), four two liang of a set of dead lever (401), same group one end fixedly connected with pipe (402) of sweep (1) are kept away from in dead lever (401), the inner wall sliding connection of pipe (402) has traveller (403), the both ends difference fixedly connected with dog (404) and first spring (405) of traveller (403), traveller (403) are close to the one end fixedly connected with pull rod (407) of first spring (405), the fixed surface of sweep (1) is connected with two fixed plate (406), the one end that traveller (403) were kept away from in pull rod (407) slides and runs through fixed plate (406).

2. The portable hydraulic folding ladder stand for the low flatbed semitrailer according to claim 1, is characterized in that: the cross section of the stop block (404) is trapezoidal, and the shape of the stop block (404) is semi-conical.

3. The portable hydraulic folding ladder stand for the low flatbed semitrailer according to claim 1, is characterized in that: the first spring (405) has a size smaller than that of the circular tube (402), and the first spring (405) is located inside the circular tube (402).

4. The hydraulic folding ladder stand of the portable low flatbed semitrailer as claimed in claim 1, characterized in that: one side of the fixing plate (406) far away from the circular tube (402) is fixedly connected with a square block (408), the surface of the square block (408) is slidably inserted with an inserting plate (409), and a square hole (410) is formed in the arc surface of the pull rod (407).

5. The portable hydraulic folding ladder stand for the low flatbed semitrailer as claimed in claim 4, wherein: the square hole (410) is positioned inside the circular tube (402), and the size of the square hole (410) is matched with that of the inserting plate (409).

6. The hydraulic folding ladder stand of the portable low flatbed semitrailer as claimed in claim 1, characterized in that: the equal fixedly connected with rectangular plate (51) in both sides of sweep (1), the fixed surface of rectangular plate (51) is connected with slide (52), the inner wall sliding connection of slide (52) has two sliders (53), two the both sides of slider (53) are all rotated and are connected with commentaries on classics board (54), four the rotation of surface of commentaries on classics board (54) is connected with fixed block (55), one side fixedly connected with second spring (56) that slide (52) are close to fixed block (55), the one end and slide (52) fixed connection of fixed block (55) are kept away from in second spring (56), the fixed surface of folding ladder (2) is connected with connecting plate (57).

7. The hydraulic folding ladder stand of claim 6, which is characterized in that: one side fixedly connected with slide bar (58) that fixed block (55) are close to slide tube (52), slide bar (58) are kept away from the one end of fixed block (55) and are slided and run through slide tube (52) and rectangular plate (51), second spring (56) cover is on the arc surface of slide bar (58).

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