Semitrailer with top of compartment closed

Abstract

The utility model relates to a semitrailer with a closed carriage top, which aims to solve the technical problems that waterproof cloth is troublesome to lay and easy to fall off after sand is loaded and transported by the existing semitrailer, and comprises a traction vehicle head, a vehicle body, a carriage and a closing mechanism, the vehicle body is arranged at the traction end of the traction vehicle head, the carriage is arranged on the vehicle body, and the closing mechanism is arranged on the carriage. The sealing mechanism is arranged on the carriage; according to the sealing mechanism, the motor is driven through an external control mechanism, the motor drives the long shaft to rotate through the gear set, the long shaft drives the worms at the two ends of the long shaft, the worms drive the worm wheels to rotate, the two worm wheels drive the two cover plates to turn over towards the top of the compartment through the two short shafts respectively, the two cover plates cover the top of the compartment, and when a vehicle runs, the two cover plates can turn over towards the top of the compartment. Rainwater entering is reduced, and operation is easy and convenient; when the sliding blocks slide in the sliding grooves, the inclined faces of the ends of the sliding blocks can shovel off sand falling into the sliding grooves, and it is prevented that during loading, the sand falls into the sliding grooves, blocking is caused, and laying of waterproof cloth is affected.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-trailers, in particular to a semi-trailer with a closed compartment top. Background Art

[0002] A semi-trailer is a trailer with the axle placed behind the center of gravity of the vehicle (when the vehicle is evenly loaded) and equipped with a coupling device that can transmit horizontal and vertical forces to the tractor. Semi-trailers are generally three-axle semi-trailers, and there are many types of semi-trailers, such as 11-meter barn semi-trailers, 13-meter barn semi-trailers, and low-bed semi-trailers. Sand used in construction is usually loaded using semi-trailers.

[0003] The existing semi-trailer compartment is generally open. When loading sand, in order to prevent the sand from falling during transportation and to prevent rainwater from entering the sand to increase the weight of the sand, the driver generally lays a tarpaulin on the top of the compartment after loading is completed. The tarpaulin needs to be tied to the compartment with a rope. The laying of the tarpaulin is not only troublesome, but also the wind generated during driving can easily blow the tarpaulin off. In view of this, we propose a semi-trailer with a closed compartment top. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art, meet the actual needs, and provide a semi-trailer with a closed car body top to solve the technical problems that the existing semi-trailer is troublesome to load sand and the tarpaulin is easy to fall off.

[0005] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: design a semi-trailer with a closed compartment top, including a tractor head, a body, a compartment and a closing mechanism, the body is arranged at the traction end of the tractor head, the compartment is arranged on the body, and the closing mechanism is arranged on the compartment;

[0006] The closing mechanism comprises a motor, a long shaft and two cover plates symmetrically arranged on both sides of the carriage; the motor is fixedly mounted on the outer wall of the carriage at one end opposite to the traction locomotive by screws, the middle portion of the long shaft is rotatably connected to the outer wall of one end of the carriage by installing a bearing, the output end of the motor is transmitted to the long shaft through a gear set, a short shaft is fixedly connected to the top of one end of the cover plate, a worm gear is provided on the short shaft fixing sleeve, the top of one end of the cover plate is rotatably connected to the surface of one side of the other end of the carriage, two worms are symmetrically arranged at both ends of the long shaft, the worms are meshed with the worm gears, and a rain cloth winding assembly is provided on the opposite side of the two cover plates.

[0007] Preferably, the tarpaulin winding assembly comprises an installation box, a reel, a tarpaulin and a traction rod, the installation box is fixedly installed on the inner wall of one end of the carriage, the reel is arranged in the installation box, and both ends of the reel are rotatably connected to the box walls on both sides of the carriage, one end of the reel extends to the outside of one side of the carriage, a through groove is opened on one side of the installation box, one end of the tarpaulin is rolled up on the surface of the reel, both ends of the tarpaulin are inserted into the through groove and fixedly connected to the surface of one side of the traction rod, and both ends of the traction rod are slidably connected to the inner walls on both sides of the carriage.

[0008] Preferably, both ends of the traction rod are provided with sliding blocks, and the box walls on both sides of the carriage are provided with sliding grooves relative to the positions of the sliding blocks, and the surfaces of the sliding blocks are slidably connected to the sliding grooves.

[0009] Preferably, a surface of the slider opposite to the other end of the carriage is in the shape of an inclined surface whose height gradually decreases from the middle of the slider to the end of the slider.

[0010] Preferably, a rotating shaft is provided on one side of the reel, one end of the rotating shaft is rotatably connected to the outer wall of one end of the carriage through a mounting seat, a hand wheel is provided on the fixed sleeve at the other end of the rotating shaft, and the rotating shaft and one end of the reel are driven by a toothed disc and a chain.

[0011] Preferably, the other side of the traction rod is detachably fixedly connected to the inner wall of the other end of the carriage through a hook and a hanging ring.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is provided with a closing mechanism. After the sand is loaded, the traction rod is pulled toward the other end of the carriage to drive the tarpaulin to be spread on the surface of the sand. The other side of the traction rod is connected and fixed to the inner wall of the other end of the carriage through a hook and a hanging ring. The motor is driven by an external control mechanism. The motor drives the long shaft to rotate through a gear set. The long shaft drives the worms at both ends thereof. The worm drives the worm gear to rotate. The two worm gears drive the two cover plates to flip toward the top of the carriage through two short shafts respectively, so that the two cover plates cover the top of the carriage, so that when the vehicle is driving, the entry of rainwater is reduced. The operation is simple and convenient.

[0014] 2. When the slider of the utility model slides in the slide groove, the inclined surface of the slider end can shovel the sand that falls into the slide groove, so as to prevent the sand from falling into the slide groove and causing blockage during loading, thereby affecting the laying of the tarpaulin. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the closed state structure of the carriage of the utility model;

[0016] Figure 2 A is a partial enlarged structural schematic diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the carriage of the utility model in an open state;

[0018] Figure 4 It is a partial enlarged structural schematic diagram of the cross section at B of the utility model;

[0019] Figure 5 It is a schematic diagram of the partially enlarged structure of point C of the present invention.

[0020] In the figure: 1. traction head; 2. body; 3. compartment; 301. slide; 4. closing mechanism; 401. motor; 402. long shaft; 403. cover plate; 404. short shaft; 405. worm gear; 406. worm; 407. winding assembly; 4071. installation box; 4072. reel; 4073. tarpaulin; 4074. traction rod; 4075. through groove; 4076. slider; 4077. rotating shaft; 4078. handwheel. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0022] Example:

[0023] This embodiment discloses a semi-trailer with a closed compartment top. Figures 1 to 5 , including a tractor head 1, a body 2, a carriage 3 and a closing mechanism 4, the body 2 is arranged at the traction end of the tractor head 1, the carriage 3 is arranged on the body 2, and the closing mechanism 4 is arranged on the carriage 3; in this embodiment, the tractor head 1, the body 2, and the carriage 3 are all existing products on the market, the tractor head 1 is used to tow the vehicle, the body 2 is used to bear the carriage 3 and is not used to load goods.

[0024] Specifically, Figures 1 to 3As shown, the closing mechanism 4 includes a motor 401, a long shaft 402 and two cover plates 403 symmetrically arranged on both sides of the carriage 3; the motor 401 is fixedly installed on the outer wall of the end of the carriage 3 opposite to the traction head 1 by screws, the middle part of the long shaft 402 is rotatably connected to the outer wall of one end of the carriage 3 by installing a bearing, the output end of the motor 401 is transmitted to the long shaft 402 through a gear set, the top of one end of the cover plate 403 is fixedly connected to a short shaft 404, the short shaft 404 is fixedly sleeved with a worm gear 405, the top of one end of the cover plate 403 is rotatably connected to the surface of one side of the other end of the carriage 3, two worms 406 are symmetrically arranged at both ends of the long shaft 402, the worm 406 is meshed with the worm gear 405, and the two A rain cloth winding assembly 407 is provided on the opposite side of the cover plate 403. After the sand is loaded, the motor 401 is driven by an external control mechanism. The motor 401 drives the long shaft 402 to rotate through the gear set. The long shaft 402 drives the worm 406 at both ends thereof. The worm 406 drives the worm wheel 405 to rotate. The two worm wheels 405 drive the two cover plates 403 to flip toward the top of the carriage 3 through the two short shafts 404 respectively, so that the two cover plates 403 cover the top of the carriage 3, so as to reduce the entry of rainwater when the vehicle is driving. When unloading, the motor 401 is driven to rotate in the opposite direction through the external control mechanism, thereby driving the two cover plates 403 to flip toward the carriage 3 respectively, so as to facilitate unloading.

[0025] Further, such as Figure 2 , Figure 4 , Figure 5 As shown, the rain sheet reel assembly 407 includes an installation box 4071, a reel 4072, a rain sheet 4073 and a traction rod 4074. The installation box 4071 is fixedly installed on the inner wall at one end of the carriage 3, the reel 4072 is arranged in the installation box 4071, and the two ends of the reel 4072 are rotatably connected to the box walls on both sides of the carriage 3, one end of the reel 4072 extends to the outside of one side of the carriage 3, a through groove 4075 is opened on one side of the installation box 4071, one end of the rain sheet 4073 is rolled up on the surface of the reel 4072, one end of the rain sheet 4073 is penetrated through the through groove 4075 and is fixedly connected to the surface of one side of the traction rod 4074, the two ends of the traction rod 4074 are respectively slidably connected to the inner walls on both sides of the carriage 3, and one side of the reel 4072 is provided with a There is a rotating shaft 4077, one end of which is rotatably connected to the outer wall of one end of the carriage 3 through a mounting seat, and the other end of the rotating shaft 4077 is fixedly sleeved with a handwheel 4078, and the rotating shaft 4077 and one end of the reel 4072 are driven by a toothed disc and a chain. After the sand is loaded, the traction rod 4074 is pulled toward the other end of the carriage 3, and the traction rod 4074 drives the tarpaulin 4073 to extend out from the through groove 4075 and spread on the sand surface to prevent rainwater from entering the sand during driving. When unloading, the rotating shaft 4077 is driven to rotate by turning the handwheel 4078, and the rotating shaft 4077 drives the reel 4072 to rotate through the toothed disc and the chain, and the reel 4072 collects the tarpaulin 4073 into the installation box 4071 and rolls it on the rotating shaft 4077.

[0026] Furthermore, if Figure 5 As shown, sliders 4076 are provided at both ends of the traction rod 4074, and slide grooves 301 are opened on the box walls on both sides of the carriage 3 relative to the positions of the sliders 4076. The surfaces of the sliders 4076 are slidably connected to the slide grooves 301. When the traction rod 4074 is pulled, the sliders 4076 are driven to slide in the slide grooves 301 to prevent the tarpaulin 4073 from being laid tilted.

[0027] It is worth noting that if Figure 5 As shown, the slider 4076 and the other end of the carriage 3 have a sloped surface whose height gradually decreases from the middle of the slider 4076 to the end of the slider 4076. When the traction rod 4074 is pulled, the slider 4076 is driven to slide in the slide groove 301. The inclined surface of the end of the slider 4076 can shovel out the sand that has fallen into the slide groove 301, so as to prevent the sand from falling into the slide groove 301 and causing blockage during loading, thereby affecting the laying of the tarpaulin 4073.

[0028] It is worth noting that Figures 3 to 5 As shown, the other side of the traction rod 4074 is detachably fixedly connected to the inner wall of the other end of the carriage 3 through a hook and a hanging ring, and the laid tarpaulin 4073 can be fixed through the hook and the hanging ring.

[0029] Working principle: When the utility model is used, after the sand loading is completed, the traction rod 4074 is pulled toward the other end of the carriage 3, and the traction rod 4074 drives the rain sheet 4073 to extend from the through groove 4075 and spread on the sand surface, driving the slider 4076 to slide in the slide groove 301. The inclined surface of the end of the slider 4076 can shovel the sand that falls into the slide groove 301 to prevent the sand from falling into the slide groove 301 and causing blockage during loading, affecting the laying of the rain sheet 4073. The other side of the traction rod 4074 is connected and fixed to the inner wall of the other end of the carriage 3 through a hook and a hanging ring, and the motor 401 is driven by an external control mechanism. The motor 401 drives the long shaft 402 to rotate through a gear set, and the long shaft 402 drives the worm 40 at both ends thereof. 6. The worm 406 drives the worm wheel 405 to rotate. The two worm wheels 405 drive the two cover plates 403 to flip toward the top of the compartment 3 through the two short shafts 404, so that the two cover plates 403 cover the top of the compartment 3, so that the entry of rainwater is reduced when the vehicle is driving. When unloading, the motor 401 is driven to rotate in the opposite direction through the external control mechanism, thereby driving the two cover plates 403 to flip toward the compartment 3 until the cover plates 403 are parallel to the two sides of the compartment 3, remove the hook, and drive the rotating shaft 4077 to rotate by turning the hand wheel 4078. The rotating shaft 4077 drives the reel 4072 to rotate through the toothed disc and the chain. The reel 4072 collects the rain cloth 4073 into the installation box 4071 and rolls it on the rotating shaft 4077, and then the goods can be unloaded.

[0030] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A semi-trailer with a closed compartment top, characterized in that: The vehicle comprises a tractor head (1), a vehicle body (2), a carriage (3) and a closing mechanism (4), wherein the vehicle body (2) is arranged at the traction end of the tractor head (1), the carriage (3) is arranged on the vehicle body (2), and the closing mechanism (4) is arranged on the carriage (3); The closing mechanism (4) comprises a motor (401), a long shaft (402) and two cover plates (403) symmetrically arranged on both sides of the carriage (3); the motor (401) is fixedly mounted on the outer wall of the carriage (3) at one end opposite to the tractor head (1) by means of screws, the middle portion of the long shaft (402) is rotatably connected to the outer wall of one end of the carriage (3) by means of a mounting bearing, and the output end of the motor (401) is connected to the long shaft (402) through a gear set for transmission. The top of one end of the cover plate (403) is fixedly connected with a short shaft (404), and the short shaft (404) is fixedly sleeved with a worm gear (405). The top of one end of the cover plate (403) is rotatably connected to the surface of one side of the other end of the carriage (3). Two worm gears (406) are symmetrically arranged at both ends of the long shaft (402), and the worm gears (406) are meshed with the worm gear (405). The opposite sides of the two cover plates (403) are provided with a rain cloth rolling assembly (407).

2. The semitrailer with a closed compartment top as claimed in claim 1, characterized in that: The rain cloth reeling assembly (407) comprises an installation box (4071), a reel (4072), a rain cloth (4073) and a traction rod (4074); the installation box (4071) is fixedly installed on the inner wall of one end of the carriage (3); the reel (4072) is arranged in the installation box (4071), and the two ends of the reel (4072) are respectively rotatably connected to the box walls on both sides of the carriage (3); the reel (4072) One end extends to the outside of one side of the carriage (3); a through slot (4075) is provided on one side of the installation box (4071); one end of the rain sheet (4073) is rolled up on the surface of the reel (4072); both ends of the rain sheet (4073) are passed through the through slot (4075) and fixedly connected to the surface of one side of the traction rod (4074); and both ends of the traction rod (4074) are respectively slidably connected to the inner walls on both sides of the carriage (3).

3. The semitrailer with a closed compartment top as claimed in claim 2, characterized in that: Slide blocks (4076) are provided at both ends of the traction rod (4074), and slide grooves (301) are provided at the positions of the box walls on both sides of the carriage (3) relative to the slide blocks (4076), and the surfaces of the slide blocks (4076) are slidably connected to the slide grooves (301).

4. The semitrailer with a closed compartment top as claimed in claim 3, characterized in that: The surface of the slider (4076) opposite to the other end of the carriage (3) is in the shape of an inclined surface whose height gradually decreases from the middle of the slider (4076) to the end of the slider (4076).

5. The semi-trailer with a closed compartment top as claimed in claim 2, characterized in that: A rotating shaft (4077) is provided on one side of the reel (4072); one end of the rotating shaft (4077) is rotatably connected to the outer wall of one end of the carriage (3) via a mounting seat; a hand wheel (4078) is fixedly provided on the other end of the rotating shaft (4077); and the rotating shaft and one end of the reel (4072) are driven by a toothed disc and a chain.

6. The semitrailer with a closed compartment top as claimed in claim 2, characterized in that: The other side of the traction rod (4074) is detachably fixedly connected to the inner wall of the other end of the carriage (3) via a hook and a hanging ring.

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