Hydraulic folding structure for ladder stand of low-flatbed semitrailer

Abstract

The utility model discloses a hydraulic folding structure for a ladder stand of a low-bed semitrailer, which comprises a storage groove, a cross beam is arranged on the storage groove, and the ladder stand is rotatably mounted on the cross beam through a hinge piece; a plurality of hydraulic cylinders used for supporting the crawling ladder are mounted on the storage groove and located below the crawling ladder; a movement driving mechanism is arranged on the storage groove and used for driving the cross beam to move horizontally; a plurality of scraping and brushing assemblies are mounted on the storage groove and are used for scraping and brushing dirt on the surface of the crawling ladder; the scraping brush assembly comprises a [-shaped frame fixed on the storage groove, and a scraping brush is mounted on the [-shaped frame; the hydraulic folding structure for the ladder stand of the low flatbed semitrailer relates to the technical field of ladder stands, the ladder stand plate can be stored, space is not occupied, wind resistance is not caused, and dirt and gravel on the surface of the ladder stand plate can be cleaned when the ladder stand plate is stored.

Description

Technical Field

[0001] The utility model relates to the technical field of ladders, in particular to a hydraulic folding structure of a ladder for a low-bed semitrailer. Background Art

[0002] A low bed semi-trailer is a transport vehicle that can transport heavier goods. In order to facilitate loading and unloading of goods, it is usually necessary to use a ladder to reduce the angle between the car body and the ground.

[0003] The existing patent CN202022176907.7 discloses a low-bed semi-trailer ladder. When in use, the ladder plate is usually driven to rotate by a related rotating structure so as to effectively contact the ground. However, when not in use, the ladder plate needs to be rotated above the carriage to prevent it from affecting the rear vehicle, thereby occupying part of the carriage space and easily causing certain wind resistance during vehicle driving.

[0004] In order to solve the above problems, we propose a hydraulic folding structure for a low-bed semi-trailer ladder. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a hydraulic folding structure for a low-bed semi-trailer ladder, which can store the ladder plates without taking up space or causing wind resistance, and can clean dirt and gravel on the surface of the ladder plates when they are stored, thus solving the existing problems.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a hydraulic folding structure of a low-bed semi-trailer ladder, comprising a storage slot, a crossbeam is arranged on the storage slot, and a ladder is rotatably mounted on the crossbeam through a hinge;

[0007] A plurality of hydraulic cylinders are installed on the storage slot and below the ladder to support the ladder;

[0008] The storage slot is provided with a moving driving mechanism for driving the beam to move horizontally;

[0009] A plurality of scraping brush assemblies are installed on the storage groove for scraping and cleaning dirt on the surface of the ladder;

[0010] The scraper assembly comprises a U-shaped frame fixed on the storage groove, and the scraper is installed on the U-shaped frame;

[0011] The storage tank is also provided with a collecting assembly for collecting the cleaned dirt.

[0012] Preferably, the outer dimensions of the ladder are matched with the inner dimensions of the storage slot.

[0013] Preferably, the mobile driving mechanism includes two screw rods symmetrically distributed on both edges of the top of the storage groove, one end of the screw rod is rotatably connected to the storage groove through a bearing, and the other end is installed on the output end of the motor. A threaded sleeve is threadedly connected to the screw rod, and the two threaded sleeves are respectively connected to the two ends of the beam.

[0014] Preferably, the motor is fixed on the storage slot, and the two motors are electrically connected to an external power supply through the same wire.

[0015] Preferably, the scraping brush is made of EVA foam brush material.

[0016] Preferably, the collecting assembly includes a filter screen that penetrates the bottom wall of the storage tank and a waste collection box that is fixed below the storage tank.

[0017] Beneficial Effects

[0018] The utility model provides a hydraulic folding structure for a low-bed semi-trailer ladder. Compared with the prior art, it has the following beneficial effects:

[0019] 1. A hydraulic folding structure for a ladder of a low-bed semi-trailer, wherein the ladder is hinged on a crossbeam through an articulated part, and the crossbeam can be horizontally moved by a moving drive mechanism on a storage slot, so that after the ladder is used, the moving drive mechanism can drive the crossbeam to move horizontally, thereby driving the ladder to move to the inside of the storage slot, and the ladder is stored in the storage slot, thereby avoiding the ladder from occupying other space of the low-bed semi-trailer, and avoiding the large wind resistance caused by the ladder rotating to the top of the car body during driving, thereby improving the driving efficiency of the semi-trailer.

[0020] 2. A hydraulic folding structure of a low-bed semi-trailer ladder is provided with a scraping brush assembly and a collecting assembly on a storage slot. The scraping brush assembly includes a V-shaped frame and a scraping brush, and the collecting assembly includes a filter screen and a waste collection box. When the mobile driving mechanism drives the ladder to move into the storage slot, the scraping brush can be used to scrape and clean the gravel and dirt on the surface of the ladder, thereby avoiding the corrosion of the ladder by the gravel and dirt after the ladder is stored. At the same time, the cleaned gravel and dirt are sieved through the filter screen and then enter the waste collection box for centralized collection, which is convenient for subsequent cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 3 For this utility model Figure 2 Schematic diagram of the partially enlarged structure.

[0024] In the figure: 1. Storage trough; 2. Crossbeam; 3. Ladder; 4. Mobile drive mechanism; 41. Screw rod; 42. Motor; 43. Threaded sleeve; 5. Scraping brush assembly; 51. Frame; 52. Scraping brush; 6. Collecting assembly; 61. Filter screen; 62. Waste collection box; 7. Articulated part; 8. Hydraulic cylinder. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-3 , the utility model provides two technical solutions:

[0027] Embodiment 1:

[0028] A hydraulic folding structure of a low-bed semi-trailer ladder comprises a storage tank 1, a crossbeam 2 is arranged on the storage tank 1, and a ladder 3 is rotatably mounted on the crossbeam 2 through a hinge 7;

[0029] A plurality of hydraulic cylinders 8 are installed on the storage tank 1 and below the ladder 3 to support the ladder 3;

[0030] The storage tank 1 is provided with a moving driving mechanism 4 for driving the beam 2 to move horizontally;

[0031] A plurality of scraping brush assemblies 5 are installed on the storage tank 1 for scraping and cleaning the dirt on the surface of the ladder 3;

[0032] The scraper assembly 5 includes a U-shaped frame 51 fixed on the storage slot 1, and a scraper 52 is installed on the U-shaped frame 51;

[0033] The storage tank 1 is also provided with a collecting assembly 6 for collecting the cleaned dirt.

[0034] Embodiment 2:

[0035] The main difference from the first embodiment is:

[0036] A hydraulic folding structure for a ladder of a low-bed semi-trailer, wherein the outer dimensions of the ladder 3 are adapted to the inner dimensions of a storage slot 1, and the ladder 3 is stored through the storage slot 1; a mobile driving mechanism 4 comprises two screw rods 41 symmetrically distributed on the two edges of the top of the storage slot 1, one end of the screw rod 41 is rotatably connected to the storage slot 1 through a bearing, and the other end is installed at the output end of a motor 42, a threaded sleeve 43 is threadedly connected to the screw rod 41, and the two threaded sleeves 43 are respectively connected to the two ends of the beam 2, and the motor 42 is started to drive the screw rod 41 to rotate, drive the threaded sleeve 43 to move horizontally, and then drive the beam 2 The horizontal movement drives the ladder 3 to move horizontally; the motor 42 is fixed on the storage slot 1, and the two motors 42 are electrically connected to the external power supply through the same wire, so as to facilitate the synchronous start and stop of the two motors 42; the scraping brush 52 is made of EVA foam brush material, which is soft and will not scratch the surface of the ladder 3, and at the same time does not adhere to dust and has a good cleaning effect; the collecting component 6 includes a filter screen 61 that penetrates the bottom wall of the storage slot 1 and a waste collecting box 62 fixed under the storage slot 1. The cleaned gravel and dirt are sieved through the filter screen 61 and then enter the waste collecting box 62 for centralized collection, which is convenient for subsequent cleaning.

[0037] When the hydraulic folding structure of the ladder of a low-bed semi-trailer is in use, the ladder 3 is hinged on the crossbeam 2 through the hinge 7, and the crossbeam 2 can be moved horizontally by the mobile driving mechanism 4 on the storage groove 1. Therefore, after the ladder 3 is used, the mobile driving mechanism 4 can drive the crossbeam 2 to move horizontally, thereby driving the ladder 3 to move to the inside of the storage groove 1, and the ladder 3 is stored in the storage groove 1, thereby avoiding the ladder 3 from occupying other space of the low-bed semi-trailer, and avoiding the large wind resistance caused by the ladder 3 rotating to the top of the car body during driving, thereby improving the driving performance of the semi-trailer. Efficiency; in addition, the utility model is equipped with a scraping brush assembly 5 and a collecting assembly 6 on the storage groove 1. The scraping brush assembly 5 includes a U-shaped frame 51 and a scraping brush 52. The collecting assembly 6 includes a filter screen 61 and a waste collection box 62. When the mobile driving mechanism 4 drives the ladder 3 to move to the inside of the storage groove 1, the scraping brush 52 can scrape and clean the gravel and dirt on the surface of the ladder 3, thereby avoiding the corrosion of the gravel and dirt on the ladder 3 after the ladder 3 is stored. At the same time, the cleaned gravel and dirt are sieved through the filter screen 61 and then enter the waste collection box 62 for centralized collection, which is convenient for subsequent cleaning.

[0038] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic folding structure for a low-bed semi-trailer ladder, comprising a storage tank (1), characterized in that: The storage groove (1) is provided with a crossbeam (2), and a ladder (3) is rotatably mounted on the crossbeam (2) via a hinge (7); A plurality of hydraulic cylinders (8) are installed on the storage tank (1) and below the ladder (3) for supporting the ladder (3); The storage groove (1) is provided with a moving driving mechanism (4) for driving the crossbeam (2) to move horizontally; A plurality of scraping brush assemblies (5) are installed on the storage groove (1) for scraping and cleaning dirt on the surface of the ladder (3); The scraper assembly (5) comprises a U-shaped frame (51) fixed on the storage groove (1), and a scraper (52) is installed on the U-shaped frame (51); The storage tank (1) is also provided with a collection assembly (6) for collecting the cleaned dirt.

2. The hydraulic folding structure of a low-bed semi-trailer ladder according to claim 1 is characterized in that: The outer dimensions of the ladder (3) are compatible with the inner dimensions of the storage slot (1).

3. The hydraulic folding structure of a low-bed semi-trailer ladder according to claim 1 is characterized in that: The mobile drive mechanism (4) comprises two screw rods (41) symmetrically distributed on the two edges of the top of the storage groove (1); one end of the screw rod (41) is rotatably connected to the storage groove (1) via a bearing, and the other end is mounted on the output end of the motor (42); a threaded sleeve (43) is threadedly connected to the screw rod (41), and the two threaded sleeves (43) are respectively connected to the two ends of the crossbeam (2).

4. The hydraulic folding structure of the low-bed semi-trailer ladder according to claim 3 is characterized by: The motor (42) is fixed on the storage slot (1), and the two motors (42) are electrically connected to an external power source via the same wire.

5. The hydraulic folding structure of a low-bed semi-trailer ladder according to claim 1 is characterized in that: The scraping brush (52) is made of EVA foam brush material.

6. The hydraulic folding structure of a low-bed semi-trailer ladder according to claim 1 is characterized in that: The collecting assembly (6) comprises a filter screen (61) which penetrates the bottom wall of the storage tank (1) and a waste collection box (62) which is fixed below the storage tank (1).

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