Early warning device for uninstalled trailer crawling ladder

Abstract

The utility model relates to the technical field of trailer crawling ladders, and discloses an early warning device for uninstalled trailer crawling ladders, which comprises a trailer tail and a crawling ladder body, an installation mechanism is arranged at the bottom of the trailer tail, an early warning mechanism is arranged on the installation mechanism, the installation mechanism comprises a base, and a first installation cavity is arranged in the base. According to the pre-warning device for the uninstalled trailer ladder stand, when a ladder stand body needs to be installed at the tail of a trailer, a guide rod on one side of the ladder stand body is inserted into a base, meanwhile, a connecting rod is inserted into a first installation cavity in the base, a first circular truncated cone moves inwards and continuously moves on the inclined faces of wedge-shaped blocks, the two wedge-shaped blocks move relatively, a spring is compressed, and the ladder stand body is installed at the tail of the trailer. When the first circular truncated cone is attached to the inner wall of the first mounting cavity, the wedge-shaped block is just located at the interval of the first circular truncated cone and the second circular truncated cone, the wedge-shaped block is bounced into the interval under the action of the elastic force of the spring, the connecting rod and the crawling ladder body can be fixed, and rapid mounting of the crawling ladder body is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of trailer ladders, and particularly relates to a warning device for an unmounted trailer ladder. Background Technique

[0002] A trailer ladder is a device installed at the rear of a trailer (especially a semi-trailer), mainly used to facilitate the driver to climb onto the top of the carriage for cargo loading, unloading, maintenance, inspection and other operations. The common ladders include fixed ladders, folding ladders and hydraulic ladders.

[0003] Most ladders are usually fixed to the rear of the trailer, commonly seen in trailers that need to perform loading and unloading operations frequently. However, in some special cases, such as temporarily adding transportation tasks, dealing with emergencies or meeting special transportation needs, it may be necessary to install the ladder temporarily. This requires the ladder to be easy to install and be able to be quickly deployed to the trailer. However, under the hasty installation conditions, the ladder may not be installed in place due to the carelessness of the operator, which will lead to great safety hazards during the use of the ladder. Therefore, a warning device for an unmounted trailer ladder is proposed to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a warning device for an unmounted trailer ladder to solve the problems raised in the above background technique.

[0005] To solve the above technical problems, the utility model provides the following technical solution: A warning device for an unmounted trailer ladder, including the rear of the trailer and the ladder body. An installation mechanism is arranged at the bottom of the rear of the trailer, and a warning mechanism is arranged on the installation mechanism;

[0006] The installation mechanism includes a base. A first installation cavity is opened inside the base. A slide plate is slidably connected inside the first installation cavity. A wedge block is fixedly connected to one side of the slide plate. A movable rod is fixedly connected to the other side of the slide plate. A spring is fixedly connected to the other side of the slide plate. A connecting rod is fixedly connected to one side of the ladder body. A first frustum is fixedly connected to the other side of the connecting rod. A second frustum is fixedly connected to the outside of the connecting rod. A reset plate is fixedly connected to the bottom of the slide plate. A guide rod is fixedly connected to one side of the ladder body;

[0007] The warning mechanism includes a second installation cavity. A pressure sensor is fixedly connected to one side of the movable rod. A microcontroller is fixedly connected to one side of the base. A first signal lamp is fixedly connected to one side of the rear of the trailer. A second signal lamp is fixedly connected to one side of the rear of the trailer.

[0008] Preferably, the base is fixedly connected to the bottom of the trailer tail, and the number of the first installation cavities is two and they are symmetrically distributed left and right in the base.

[0009] Preferably, one side of the spring is fixedly connected to the sliding plate, the other side of the spring is fixedly connected to the inner wall of the first installation cavity, and the spring is sleeved outside the movable rod.

[0010] Preferably, the radius of the first frustum is smaller than the radius of the second frustum, and the inclined surface of the first frustum is adapted to the inclined surface of the wedge block.

[0011] Preferably, a rectangular through hole adapted to the movement track of the reset plate is formed in the bottom of the base, and the rectangular through hole is communicated with the first installation cavity.

[0012] Preferably, one end of the movable rod extends into the second installation cavity, the color of the first signal lamp is yellow, and the color of the second signal lamp is green.

[0013] Preferably, the model of the microcontroller is ESP, the microcontroller is electrically connected to the pressure sensor, and the microcontroller is electrically connected to the first signal lamp and the second signal lamp.

[0014] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows:

[0015] First, when it is necessary to install the ladder body at the trailer tail, the guide rod on one side of the ladder body is inserted into the base, and at the same time, the connecting rod is inserted into the first installation cavity in the base. The first frustum moves inward and continuously moves on the inclined surface of the wedge block, so that the two wedge blocks move relatively, compressing the spring. When the first frustum fits with the inner wall of the first installation cavity, the wedge block is just located at the gap between the first frustum and the second frustum. Under the elastic force of the spring, the wedge block is ejected into the gap, and the connecting rod and the ladder body can be fixed, completing the rapid installation of the ladder body.

[0016] Second, when the spring is compressed, under the push of the movable rod, the pressure sensor is in contact with the inner wall of the second installation cavity. At this time, the pressure sensor transmits the pressure information to the microcontroller, and the microcontroller controls the first signal lamp to flash. When the spring resets, the pressure sensor transmits the pressure information at this time to the microcontroller, and the microcontroller controls the second signal lamp to flash. Only when the first signal lamp flashes first and then the second signal lamp flashes, the installation of the ladder body is completed, otherwise the ladder body is not installed in place. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the present utility model;

[0018] Figure 2Another axonometric view of the present utility model;

[0019] Figure 3 A sectional view of the base when the spring of the present utility model is reset;

[0020] Figure 4 A sectional view of the base when the spring of the present utility model is compressed.

[0021] Wherein: 1. Trailer tail; 2. Ladder body; 3. Mounting mechanism; 301. Base; 302. First mounting cavity; 303. Slide plate; 304. Wedge block; 305. Movable rod; 306. Spring; 307. Connecting rod; 308. First frustum; 309. Second frustum; 310. Reset plate; 311. Guide rod; 4. Early warning mechanism; 401. Second mounting cavity; 402. Pressure sensor; 403. Microcontroller; 404. First signal lamp; 405. Second signal lamp. Specific implementation manners

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] The present utility model provides the following technical solutions:

[0024] Embodiment 1

[0025] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4, An early warning device for the unmounted trailer ladder, including the trailer rear 1 and the ladder body 2. A mounting mechanism 3 is fixedly connected to the bottom of the trailer rear 1. The mounting mechanism 3 includes a base 301. A first mounting cavity 302 is opened inside the base 301. A sliding plate 303 is slidably connected inside the first mounting cavity 302. A wedge block 304 is fixedly connected to one side of the sliding plate 303. A movable rod 305 is fixedly connected to the other side of the sliding plate 303. A spring 306 is fixedly connected to the other side of the sliding plate 303. A connecting rod 307 is fixedly connected to one side of the ladder body 2. A first frustum 308 is fixedly connected to the other side of the connecting rod 307. A second frustum 309 is fixedly connected to the outside of the connecting rod 307. A reset plate 310 is fixedly connected to the bottom of the sliding plate 303. A guide rod 311 is fixedly connected to one side of the ladder body 2. The base 301 is fixedly connected to the bottom of the trailer rear 1. The number of the first mounting cavities 302 is two and they are symmetrically distributed left and right inside the base 301. One side of the spring 306 is fixedly connected to the sliding plate 303, and the other side of the spring 306 is fixedly connected to the inner wall of the first mounting cavity 302. The spring 306 is sleeved on the outside of the movable rod 305. The radius of the first frustum 308 is smaller than the radius of the second frustum 309. The inclined surface of the first frustum 308 is adapted to the inclined surface of the wedge block 304. A rectangular through hole adapted to the moving track of the reset plate 310 is opened at the bottom of the base 301, and the rectangular through hole is communicated with the first mounting cavity 302.

[0026] Through the above technical solution, when it is necessary to install the ladder body 2 on the trailer rear 1, insert the guide rod 311 on one side of the ladder body 2 into the base 301. At the same time, insert the connecting rod 307 into the first mounting cavity 302 in the base 301. The first frustum 308 moves inward and continuously moves on the inclined surface of the wedge block 304, so that the two wedge blocks 304 move relatively, compressing the spring 306. When the first frustum 308 fits with the inner wall of the first mounting cavity 302, the wedge block 304 is just located at the gap between the first frustum 308 and the second frustum 309. Under the elastic force of the spring 306, the wedge block 304 is ejected into the gap, and the connecting rod 307 and the ladder body 2 can be fixed, completing the rapid installation of the ladder body 2.

[0027] Embodiment 2

[0028] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4, and on the basis of the first embodiment, it is further obtained that a warning mechanism 4 is fixedly connected to the installation mechanism 3. The warning mechanism 4 includes a second installation cavity 401. A pressure sensor 402 is fixedly connected to one side of the movable rod 305. A microcontroller 403 is fixedly connected to one side of the base 301. A first signal lamp 404 is fixedly connected to one side of the trailer tail 1. A second signal lamp 405 is fixedly connected to one side of the trailer tail 1. One end of the movable rod 305 extends into the interior of the second installation cavity 401. The color of the first signal lamp 404 is yellow. The color of the second signal lamp 405 is green. The model of the microcontroller 403 is ESP32. The microcontroller 403 is electrically connected to the pressure sensor 402. The microcontroller 403 is electrically connected to the first signal lamp 404 and the second signal lamp 405.

[0029] Through the above technical solution, when the spring 306 is compressed, under the push of the movable rod 305, the pressure sensor 402 is brought into contact with the inner wall of the second installation cavity 401. At this time, the pressure sensor 402 transmits the pressure information to the microcontroller 403, and the microcontroller 403 controls the first signal lamp 404 to flash. When the spring 306 resets, the pressure sensor 402 transmits the pressure information at this time to the microcontroller 403, and the microcontroller 403 controls the second signal lamp 405 to flash. Only when the first signal lamp 404 flashes first and then the second signal lamp 405 flashes, is the installation of the ladder body 2 completed. Otherwise, the ladder body 2 is not installed in place.

[0030] During the actual operation process, when this device is in use, when it is necessary to install the ladder body 2 on the trailer tail 1, the guide rod 311 on one side of the ladder body 2 is inserted into the base 301, and at the same time, the connecting rod 307 is inserted into the first installation cavity 302 in the base 301. The first frustum 308 moves inward and continuously moves on the inclined surface of the wedge block 304, causing the two wedge blocks 304 to move relative to each other, compressing the spring 306. Under the push of the movable rod 305, the pressure sensor 402 is brought into contact with the inner wall of the second installation cavity 401. At this time, the pressure sensor 402 transmits the pressure information to the microcontroller 403, and the microcontroller 403 controls the first signal lamp 404 to flash. When the first frustum 308 is in contact with the inner wall of the first installation cavity 302, the wedge block 304 is just located at the gap between the first frustum 308 and the second frustum 309. Under the elastic force of the spring 306, the wedge block 304 is ejected into the gap. When the spring 306 resets, the pressure sensor 402 transmits the pressure information at this time to the microcontroller 403, and the microcontroller 403 controls the second signal lamp 405 to flash, and the connecting rod 307 can be fixed to the ladder body 2 to complete the rapid installation of the ladder body 2. By moving the reset plate 310, the wedge block 304 is removed from the gap between the first frustum 308 and the second frustum 309, and the connecting rod 307 is pulled outwards, and the disassembly of the ladder body 2 can be completed.

[0031] It should be noted that by programming the counter inside the microcontroller 403, each time the signal lamp flashes, the counter is decremented by one. When the counter reaches zero from three, the output control signal is stopped, thereby stopping the flashing of the signal lamp, that is, the first signal lamp 404 and the second signal lamp 405 flash three times respectively.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit, and the scope is defined by the appended claims and their equivalents.

Claims

1. A warning device for a trailer ladder not being installed, comprising a trailer tail (1) and a ladder body (2), characterized in that: A mounting mechanism (3) is provided at the bottom of the trailer rear end (1), and an early warning mechanism (4) is provided on the mounting mechanism (3); The mounting mechanism (3) comprises a base (301), a first mounting cavity (302) is provided inside the base (301), a slide plate (303) is slidably connected inside the first mounting cavity (302), a wedge block (304) is fixedly connected to one side of the slide plate (303), a movable rod (305) is fixedly connected to the other side of the slide plate (303), a spring (306) is fixedly connected to the other side of the slide plate (303), a connecting rod (307) is fixedly connected to one side of the ladder body (2), a first round table (308) is fixedly connected to the other side of the connecting rod (307), a second round table (309) is fixedly connected to the outer side of the connecting rod (307), a reset plate (310) is fixedly connected to the bottom of the slide plate (303), and a guide rod (311) is fixedly connected to one side of the ladder body (2); The warning mechanism (4) comprises a second installation cavity (401), a pressure sensor (402) is fixedly connected to one side of the movable rod (305), a microcontroller (403) is fixedly connected to one side of the base (301), a first signal light (404) is fixedly connected to one side of the rear end (1) of the trailer, and a second signal light (405) is fixedly connected to one side of the rear end (1) of the trailer.

2. The warning device for trailer ladder not installed according to claim 1, characterized in that: The base (301) is fixedly connected to the bottom of the rear end of the trailer (1), and the number of the first installation cavities (302) is two and they are symmetrically distributed inside the base (301).

3. The warning device for trailer ladder not installed according to claim 1, characterized in that: One side of the spring (306) is fixedly connected to the slide plate (303), and the other side of the spring (306) is fixedly connected to the inner wall of the first installation cavity (302). The spring (306) is sleeved on the outside of the movable rod (305).

4. The warning device for trailer ladder not installed according to claim 1, characterized in that: The radius of the first frustum (308) is smaller than the radius of the second frustum (309), and the inclined surface of the first frustum (308) is adapted to the inclined surface of the wedge block (304).

5. The warning device for trailer ladder not installed according to claim 1, characterized in that: A rectangular through hole matching the moving track of the reset plate (310) is provided at the bottom of the base (301), and the rectangular through hole is connected to the first installation cavity (302).

6. The warning device for trailer ladder not installed according to claim 1, characterized in that: One end of the movable rod (305) extends to the interior of the second installation cavity (401), the color of the first signal light (404) is yellow, and the color of the second signal light (405) is green.

7. The warning device for trailer ladder not installed according to claim 1, characterized in that: The model of the microcontroller (403) is ESP32. The microcontroller (403) is electrically connected to the pressure sensor (402). The microcontroller (403) is electrically connected to the first signal light (404) and the second signal light (405).

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