CN-224225831-U - Automatic opening and closing device for rear cover of garbage truck

CN224225831UCN 224225831 UCN224225831 UCN 224225831UCN-224225831-U

Abstract

The utility model relates to the technical field of energy-saving sanitation vehicles, in particular to an automatic opening and closing device for a rear cover of a garbage truck, which comprises a truck box, a rotating shaft rotatably connected to the tail part of the truck box, a rear cover fixed on the shaft part of the rotating shaft and an opening and closing mechanism fixed on the side wall of the truck box, wherein the opening and closing mechanism comprises a hydraulic driving part, a gear set and a sector gear which are arranged on the side wall of the truck box, the gear set comprises a driving wheel and an idler wheel which are meshed with each other, the hydraulic driving part is used for driving the driving wheel to rotate, the sector gear is meshed with the idler wheel, the rotation center point of the sector gear is fixedly connected with the rotating shaft, and the number of teeth of the sector gear is larger than that of the driving wheel. The device adopts a mode of hydraulic drive and gear transmission to realize automatic opening and closing of the rear cover, and uses the pinion to drive the large-tooth-number sector gear to realize speed reduction and torque increase, so that the pressure of a hydraulic system and the abrasion of elements can be reduced, the service life is prolonged, and the opening and closing stability of the rear cover is improved.

Inventors

GAO YONG
TANG SHENGTAO
DENG CHAO
HUO WEI
LI RUN

Assignees

重庆益渝节能环保科技有限公司江津益江分公司

Dates

Publication Date: 20260512
Application Date: 20250620

Claims (5)

1. The automatic opening and closing device for the rear cover of the garbage truck is characterized by comprising a truck box, a rotating shaft rotatably connected to the tail part of the truck box, a rear cover fixed on the shaft part of the rotating shaft and an opening and closing mechanism fixed on the side wall of the truck box; The opening and closing mechanism comprises a hydraulic driving part, a gear set and sector gears, wherein the hydraulic driving part, the gear set and the sector gears are arranged on the side wall of the carriage, the gear set comprises a driving wheel and an idler gear which are meshed with each other, the hydraulic driving part is used for driving the driving wheel to rotate, the sector gears are meshed with the idler gear, the rotation center point of the sector gears is fixedly connected with the rotating shaft, and the number of teeth of the sector gears is larger than that of the driving wheel.
2. The automatic opening and closing device for the rear cover of the garbage truck as set forth in claim 1, wherein the hydraulic driving part comprises a hydraulic cylinder fixed on the side wall of the truck bed, a rack fixed with the end part of a piston rod of the hydraulic cylinder and a guide block fixed on the side wall of the truck bed, the rack is connected to the guide block in a sliding manner, and the tooth part of the rack is meshed with the driving wheel.
3. The automatic opening and closing device for the rear cover of the garbage truck according to claim 2, wherein a proximity switch is fixed at one end of the guide block, which is close to the hydraulic cylinder.
4. The automatic opening and closing device for the rear cover of the garbage truck as set forth in claim 3, wherein the opening and closing mechanism further comprises a protective shell fixed on the side wall of the truck bed, and the hydraulic cylinder, the rack, the guide block, the proximity switch, the driving teeth, the idler wheel and the sector gear are all located in the protective shell, and an opening is formed in one end of the protective shell, which is close to the rear cover.
5. The automatic opening and closing device for a rear cover of a garbage truck as set forth in claim 4, wherein mounting lugs are symmetrically fixed on the tail of the truck bed, and the rotating shaft is rotatably connected to the mounting lugs.

Description

Automatic opening and closing device for rear cover of garbage truck Technical Field The utility model relates to the technical field of energy-saving sanitation vehicles, in particular to an automatic opening and closing device for a rear cover of a garbage truck. Background In modern urban sanitation systems, garbage trucks are used for carrying out vital garbage transportation tasks for collecting urban household garbage and transporting the garbage to a garbage disposal station for centralized treatment so as to ensure urban environmental sanitation. The dustbin on the garbage truck is used for accommodating garbage, and the rear cover of the dustbin is designed to be a flip cover, so that the opening space of the dustbin is larger, and the dustbin is favorable for workers to load urban household garbage. Currently, there are various types of opening and closing devices for a rear cover of a garbage truck in the market, wherein the opening and closing devices controlled by hydraulic pressure are common. Such devices typically utilize telescoping of a hydraulic ram to actuate opening and closing of the rear cover. For example, in the prior art, a carriage for a garbage truck (bulletin number: CN 206220732U) is provided with a hydraulic cylinder at the top of the garbage can for driving the rear cover of the garbage can to open or close, compared with the traditional garbage carriage which needs to manually open the rear cover, the convenience and efficiency of opening and closing the rear cover can be improved, but the following technical problems still exist in the prior art: The garbage truck back cover in the prior art sets up hydraulic cylinder at the top of railway carriage, the piston rod tip of hydraulic cylinder and the tie point of back lid are located the upper portion of back lid, very be close to the rotation center of back lid when opening and shutting the rotation, and the whole focus of back lid is farther apart from back lid opening and shutting rotation center, lead to the resistance arm longer and the power arm is shorter, consequently, the moment of force that just needs bigger drives back lid and opens, and in order to overcome the moment that the resistance arm brought, the hydraulic cylinder can need export higher pressure when opening back lid, thereby increase hydraulic system's load easily, increase hydraulic system component loss, reduce hydraulic equipment life, increase maintenance cost. Disclosure of utility model The utility model provides an automatic opening and closing device for a rear cover of a garbage truck, which can solve the problems that the load of a hydraulic system is large, the loss of elements of the hydraulic system is easy to cause, and the service life of the rear cover of the garbage truck is shortened because the output torque required by opening and closing the rear cover of the garbage truck in the prior art is large. The application provides a technical scheme that the automatic opening and closing device of a rear cover of a garbage truck comprises a truck box, a rotating shaft rotatably connected to the tail part of the truck box, a rear cover fixed on the shaft part of the rotating shaft and an opening and closing mechanism fixed on the side wall of the truck box; The opening and closing mechanism comprises a hydraulic driving part, a gear set and sector gears, wherein the hydraulic driving part, the gear set and the sector gears are arranged on the side wall of the carriage, the gear set comprises a driving wheel and an idler gear which are meshed with each other, the hydraulic driving part is used for driving the driving wheel to rotate, the sector gears are meshed with the idler gear, the rotation center point of the sector gears is fixedly connected with the rotating shaft, and the number of teeth of the sector gears is larger than that of the driving wheel. The beneficial effects are that: 1. Amplifying output torque, reducing driving load and prolonging service life. The driving wheel is meshed with the idler wheel to drive the sector gear to rotate, and the sector gear is coaxially fixed with the rotating shaft of the rear cover, so that the rotation of the sector gear synchronously drives the rear cover to rotate, the tooth number of the sector gear is larger than that of the driving wheel, a 'pinion driving large gear' speed reduction torque increasing structure is formed, the design does not need to depend on a hydraulic system to directly output high torque, but naturally amplifies the output torque through the gear meshing transmission ratio, the driving energy required by the rear cover when the rear cover is opened is obviously reduced, the hydraulic driving part can realize the opening of the rear cover only by providing smaller power input, the working pressure of the hydraulic system is greatly reduced, the problem of element abrasion caused by high pressure is avoided, the load of the hydraulic system is effectively reduced, and t