CN219154329U

CN219154329U - Hydraulic folding structure of low-plate semitrailer cat ladder

Info

Publication number: CN219154329U
Application number: CN202320127195.0U
Authority: CN
Inventors: 王昌宇
Original assignee: Shandong Yuantongdao Hao Special Purpose Vehicle Manufacturing Co ltd
Current assignee: Shandong Yuantongdao Hao Special Purpose Vehicle Manufacturing Co ltd
Priority date: 2023-02-06
Filing date: 2023-02-06
Publication date: 2023-06-09
Anticipated expiration: 2033-02-06

Abstract

The utility model relates to the technical field of ladders and discloses a hydraulic folding structure of a low-bed semitrailer ladder, which comprises a frame, wherein a slide block is connected with the outer side Zhou Jun of a threaded rod in a threaded manner, the opposite sides of the slide block are fixedly connected with two ends of a fixed plate, the two sides of the top end of the fixed plate are fixedly connected with hydraulic rods, the output ends of the hydraulic rods are fixedly connected with two sides of the bottom wall of a rotating frame, and the tops of the two sides of the rotating frame are rotatably connected inside the ladder plate. According to the utility model, the front end of the ladder plate moves downwards through the hydraulic rod, so that the whole ladder plate rotates along the rear end of the chute, the rear end of the ladder plate is lifted off the ground, the sliding block is matched with the stepping motor to drive the fixed plate to linearly move along the threaded rod, so that the hydraulic rod is driven to pull the ladder plate back into the frame, the ladder plate is prevented from occupying other spaces of the low-flat semi-trailer, and larger windage caused by the ladder plate during running can be avoided, thereby improving the running efficiency of the semi-trailer.

Description

Hydraulic folding structure of low-plate semitrailer cat ladder

Technical Field

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

Background

The low flatbed semitrailer is a transport vehicle capable of transporting heavier goods, the loading capacity of which is related to the number of axles and the width of tires, and is generally used for transporting heavy automobiles, rail vehicles, mining machines, forestry machines, engineering machines and other heavy-duty goods, the lower the center of gravity is, the better the stability and safety are, the higher the capability of transporting ultrahigh goods and passing overhead obstacles is, and a crawling ladder is generally required to reduce the angle between a carriage plate and the ground for facilitating goods loading and unloading.

The cat ladder board is usually utilized to drive its rotation when using to with ground effective contact, but the cat ladder board need rotate the cat ladder board to the carriage top for preventing its influence rear vehicle when not using, thereby occupy partial carriage space, and cause certain windage easily at the vehicle in-process cat ladder board that traveles, so need accomodate the cat ladder board, and for preventing debris such as rubble get into and accomodate the district and influence cat ladder board extending structure when not using, need shelter from accomodate the district.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a hydraulic folding structure of a low-bed semitrailer ladder stand.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a low flat semi-trailer cat ladder hydraulic pressure beta structure, includes the frame, the equal fixedly connected with U-shaped frame in diapire both sides in the frame, wall all rotates around in the U-shaped frame and connects in threaded rod front and back end, threaded rod front end all runs through U-shaped frame and fixedly connected with step motor, the equal fixedly connected with of wall front wall both sides lower part in the frame before the step motor, threaded rod outer Zhou Jun threaded connection has the slider, the equal fixedly connected with in fixed plate both ends of slider opposite side, the equal fixedly connected with hydraulic stem in fixed plate top both sides, the equal fixedly connected with of hydraulic stem output is in rotating frame diapire both sides, rotating frame both sides top is all rotated and is connected inside the cat ladder board.

As a further description of the above technical solution:

the frame back wall bottom articulates there is the swivel plate, the equal fixedly connected with L shaped plate of lower part rear side in the both sides lateral wall in the frame, the equal fixedly connected with electric putter of L shaped plate rear end, electric putter rear end all rotates to be connected with the pull rod, the pull rod rear end all rotates to be connected in swivel plate top rear portion both sides.

As a further description of the above technical solution:

the sliding blocks are respectively connected to the lower parts of the side walls of the two sides in the frame in a sliding way on the side far away from each other.

As a further description of the above technical solution:

the fixed plate bottom rotates and is connected with evenly distributed's a plurality of bull stick, the bull stick bottom all sets up the diapire in the frame.

As a further description of the above technical solution:

the bottom wall is provided with a plurality of spouts two of evenly distributed in the frame, the equal sliding connection of spout two is inside has the mount, wall top all fixed connection is around the fixed plate in the mount.

As a further description of the above technical solution:

the upper parts of the side walls of the two sides in the frame are respectively provided with a first sliding chute, and two ends of the ladder stand plate are respectively and slidably connected in the first sliding chute.

As a further description of the above technical solution:

the middle part fixedly connected with spring of front wall in the frame, spring rear end fixedly connected with baffle, the equal sliding connection of upper and lower ends of baffle is at the upper and lower wall in the frame.

As a further description of the above technical solution:

the electric putter rear end outside all fixedly connected with support frame, support frame keeps away from one side lateral wall mutually and sliding connection respectively in the frame both sides lateral wall.

The utility model has the following beneficial effects:

1. according to the utility model, the front end of the ladder plate moves downwards through the hydraulic rod, so that the whole ladder plate rotates along the rear end of the chute, the rear end of the ladder plate is lifted off the ground, the sliding block is matched with the stepping motor to drive the fixed plate to linearly move along the threaded rod, so that the hydraulic rod is driven to move to pull the ladder plate back into the frame, the ladder plate is prevented from occupying other spaces of the low-flat semi-trailer, and larger windage caused by the ladder plate during running can be avoided, so that the running efficiency of the semi-trailer is improved.

2. According to the utility model, the electric push rod drives the pull rod to move, and the pull rod is connected with the rotating plate which is connected with the frame, so that the rotating plate can rotate, the rear part of the frame is conveniently opened or shielded, the ladder stand plate can be ensured to be normally retracted and released, and sundries such as broken stones can be prevented from entering the frame to influence related driving parts, so that the aim of protecting the internal structure is fulfilled.

Drawings

Fig. 1 is a rear perspective view of a hydraulic folding structure of a low-bed semitrailer ladder stand provided by the utility model;

FIG. 2 is a side perspective cross-sectional view of the hydraulic folding structure of the low-bed semitrailer ladder according to the utility model;

fig. 3 is a top perspective cross-sectional view of the hydraulic folding structure of the low-bed semitrailer ladder according to the utility model.

Legend description:

1. a frame; 2. a hydraulic rod; 3. a fixing plate; 4. a pull rod; 5. a ladder stand plate; 6. a spring; 7. a baffle; 8. a first chute; 9. a threaded rod; 10. an L-shaped plate; 11. an electric push rod; 12. a fixing frame; 13. a rotating frame; 14. a rotating rod; 15. a rotating plate; 16. a stepping motor; 17. a U-shaped frame; 18. a second chute; 19. a support frame; 20. sliding block

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 description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-3, one embodiment provided by the present utility model is: the hydraulic folding structure of the low-bed semitrailer ladder comprises a frame 1, wherein both sides of the inner bottom wall of the frame 1 are fixedly connected with U-shaped frames 17, the front wall and the rear wall in the U-shaped frames 17 are respectively and rotatably connected with the front end and the rear end of a threaded rod 9, the purpose of supporting the threaded rod 9 is realized through the U-shaped frames 17, displacement is prevented when the threaded rod 9 rotates, the front end of the threaded rod 9 penetrates through the U-shaped frames 17 and is fixedly connected with a stepping motor 16, the front wall of the stepping motor 16 is fixedly connected with the lower parts of both sides of the inner front wall of the frame 1, the outer Zhou Jun thread of the threaded rod 9 is connected with sliding blocks 20, the opposite sides of the sliding blocks 20 are respectively and fixedly connected with both ends of a fixed plate 3, both sides of the top end of the fixed plate 3 are respectively and fixedly connected with hydraulic rods 2, the output ends of the hydraulic rods 2 are respectively and fixedly connected with both sides of the bottom wall of a rotating frame 13, the rotating frame 13 both sides top all rotates to be connected inside cat ladder 5, be connected cat ladder 5 and hydraulic stem 2 through rotating frame 13, thereby usable hydraulic stem 2 drives cat ladder 5 rotatory, and then guarantee cat ladder 5 can be with ground effective contact, and make slider 20 drive fixed plate 3 along threaded rod 9 do rectilinear movement through step motor 16, thereby make cat ladder 5 front end lower extreme move and make cat ladder 5 wholly take place the rotation, and then make cat ladder 5 rear end lift off ground, thereby pull back cat ladder 5 inside frame 1 through fixed plate 3, in order to avoid cat ladder 5 to occupy other spaces of semitrailer, and can avoid the great windage that appears because cat ladder 5 when driving, the travelling efficiency of semitrailer has been promoted.

The bottom of the rear wall of the frame 1 is hinged with a rotating plate 15, the lower rear side of the middle part of the side walls of the two sides in the frame 1 is fixedly connected with an L-shaped plate 10, the rear end of the L-shaped plate 10 is fixedly connected with an electric push rod 11, the rear end of the electric push rod 11 is rotationally connected with a pull rod 4, the rear end of the pull rod 4 is rotationally connected with the two sides of the rear part of the top end of the rotating plate 15, the pull rod 4 is driven by the electric push rod 11 to move, the rotating plate 15 is rotated by the pull rod 4, so that the rear part of the frame 1 is conveniently opened or shielded, the normal retraction of the cat ladder 5 is ensured, and the influence of sundries such as broken stone and the like on related driving parts caused by entering the frame 1 is prevented, the aim of protecting the internal structure is fulfilled, one far away side of a slide block 20 is respectively and slidingly connected with the lower parts of the side walls of the two sides in the frame 1, the slide block 20 is limited by the frame 1, the slide 20 is prevented from rotating under the renting of a threaded rod 9, the bottom end of the fixed plate 3 is rotationally connected with a plurality of rotating rods 14 which are uniformly distributed, the bottoms of the rotating rods 14 are respectively arranged at the inner bottom wall of the frame 1, the purpose of reducing the friction force between the fixed plate 3 and the inner bottom wall of the frame 1 is realized through the rotating rods 14, thereby reducing the resistance born by the sliding blocks 20, achieving the effect of protecting related connecting structures, the inner bottom wall of the frame 1 is provided with a plurality of sliding grooves II 18 which are uniformly distributed, the inner parts of the sliding grooves II 18 are respectively and slidingly connected with a fixed frame 12, the top ends of the front wall and the rear wall of the fixed frame 12 are respectively and fixedly connected with the front end and the rear end of the fixed plate 3, the purpose of increasing the stability of the fixed plate 3 is realized through the fixed frame 12, the hydraulic rod 2 is prevented from being effectively supported when the hydraulic rod 2 drives the ladder plate 5 to rotate, the upper parts of the side walls of the two sides of the frame 1 are respectively provided with a first sliding groove 8, the two ends of the ladder plate 5 are respectively and slidingly connected inside the first sliding grooves 8, thereby reduce the pressure that hydraulic stem 2 receives, reach the purpose of protection hydraulic stem 2, the front wall middle part fixedly connected with spring 6 in frame 1, spring 6 rear end fixedly connected with baffle 7, the equal sliding connection of lower extreme is about in frame 1 about baffle 7, promote baffle 7 and cat ladder 5 contact through spring 6, thereby avoid cat ladder 5 to withdraw frame 1 in with frame 1 front wall bump, and the impact that produces when the accessible spring 6 absorbs the contact, the equal fixedly connected with support frame 19 in electric putter 11 rear end outside, support frame 19 keeps away from one side lateral wall mutually and slides respectively in frame 1 both sides lateral wall, support electric putter 11 through support frame 19, prevent electric putter 11 to stretch out the overlength time electric putter 11 and appear crooked and lead to damaging, thereby reach the effect of protection electric putter 11.

Working principle: the electric push rod 11 drives the pull rod 4 to move, the pull rod 4 is connected with the rotating plate 15, the rotating plate 15 is connected with the frame 1, so that the rotating plate 15 can rotate, the rear part of the frame 1 is conveniently shielded or opened, further, sundries such as broken stones and the like can be prevented from entering the frame 1 to influence related driving parts, the purpose of protecting an internal structure is achieved, the front end of the ladder plate 5 is downwards moved through the hydraulic rod 2, the whole ladder plate 5 is enabled to rotate along the rear end of the sliding groove 8, the rear end of the ladder plate 5 is lifted off the ground, the sliding block 20 is driven by the aid of the stepping motor 16 to linearly move along the threaded rod 9, the hydraulic rod 2 is driven to pull the ladder plate 5 back into the frame 1, other spaces of the ladder plate 5 are avoided, the running efficiency of the semitrailer is improved due to large wind resistance caused by the fact that the ladder plate 5 is avoided, in addition, friction between the fixed plate 3 and the inner bottom wall of the frame 1 can be reduced through the rotating rod 14, and the purpose of protecting the related connection structure is achieved.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a low flat-bed semitrailer cat ladder hydraulic pressure beta structure, includes frame (1), its characterized in that: the utility model discloses a frame, including frame (1), fixed plate (3), threaded rod (9), threaded rod (16), threaded rod (9) inner front and back wall all rotate around in frame (1) fixed connection U-shaped frame (17), threaded rod (9) front end all runs through U-shaped frame (17) and fixedly connected with step motor (16), step motor (16) front wall all fixed connection is in frame (1) inner front wall both sides lower part, threaded rod (9) outer Zhou Jun threaded connection has slider (20), slider (20) opposite side all fixed connection is in fixed plate (3) both ends, fixed plate (3) top both sides all fixed connection hydraulic rod (2), hydraulic rod (2) output all fixed connection is in rotating turret (13) diapire both sides, rotating turret (13) both sides top all rotates inside cat ladder (5).

2. The hydraulic folding structure of a low bed semitrailer cat ladder according to claim 1, wherein: the rear wall bottom of the frame (1) is hinged with a rotating plate (15), the lower part rear side of the side wall of the two sides in the frame (1) is fixedly connected with an L-shaped plate (10), the rear end of the L-shaped plate (10) is fixedly connected with an electric push rod (11), the rear end of the electric push rod (11) is rotationally connected with a pull rod (4), and the rear end of the pull rod (4) is rotationally connected with the two sides of the top end of the rotating plate (15).

3. The hydraulic folding structure of a low bed semitrailer cat ladder according to claim 1, wherein: the sliding blocks (20) are respectively connected to the lower parts of the side walls of the two sides in the frame (1) in a sliding way at the far side.

4. The hydraulic folding structure of a low bed semitrailer cat ladder according to claim 1, wherein: the bottom end of the fixed plate (3) is rotationally connected with a plurality of rotating rods (14) which are uniformly distributed, and the bottoms of the rotating rods (14) are all arranged on the inner bottom wall of the frame (1).

5. The hydraulic folding structure of a low bed semitrailer cat ladder according to claim 1, wherein: the inner bottom wall of the frame (1) is provided with a plurality of second sliding grooves (18) which are uniformly distributed, a fixing frame (12) is slidably connected inside each second sliding groove (18), and the top ends of the front wall and the rear wall in the fixing frame (12) are fixedly connected at the front end and the rear end of the fixing plate (3).

6. The hydraulic folding structure of a low bed semitrailer cat ladder according to claim 1, wherein: the two sides lateral wall upper portion all is provided with spout one (8) in frame (1), cat ladder board (5) both ends all sliding connection is inside spout one (8).

7. The hydraulic folding structure of a low bed semitrailer cat ladder according to claim 1, wherein: the front wall middle part fixedly connected with spring (6) in frame (1), spring (6) rear end fixedly connected with baffle (7), the equal sliding connection of upper and lower ends of baffle (7) is at the upper and lower wall in frame (1).

8. The hydraulic folding structure of a low bed semitrailer cat ladder according to claim 2, wherein: the electric push rod (11) is characterized in that the outer sides of the rear ends of the electric push rods are fixedly connected with supporting frames (19), and the side walls of one side, far away from each other, of the supporting frames (19) are respectively and slidably connected with the side walls of the two sides in the frame (1).