Kitchen waste truck dynamic automatic high-precision weighing device

Abstract

The present application relates to kitchen garbage vehicle-mounted weighing device, disclose a kind of kitchen garbage vehicle dynamic automatic high-precision weighing device, including bucket device and weighing device;The bucket device includes movable frame, guiding lower support part and guide rail;The movable frame and guiding lower support part move along guide rail;The bucket device further includes power sliding part and its driving device;The guiding lower support part is connected with power sliding part or movable frame by pivot;The weighing device is set on power sliding part;Further including prevent the linkage hooking device of pressing plate of movable frame top when weighing press garbage can;The linkage hooking device is set between guiding lower support part, the part connected with movable frame or between guiding lower support part and power sliding part.Movable frame top pressing plate does not press to bucket along in the stage of bucket lifting, and pressing plate presses firm bucket along when turning over and dumping, so as to realize stable and reliable high-precision measurement, safe and no garbage and sewage splashing.

Description

Technical Field

[0001] The present invention relates to a restaurant kitchen garbage truck-mounted weighing device, and in particular to a dynamic automatic high-precision weighing device for a restaurant kitchen garbage truck. Background Art

[0002] As residents' living standards improve, the amount of garbage generated is also increasing year by year. In order to further strengthen the refined management of urban domestic waste collection and transportation and achieve the goal of on-board weighing of garbage at the source, it is necessary to install on-board weighing equipment on collection and transportation vehicles.

[0003] The greatest technical challenge in achieving high-precision weighing on food waste trucks lies in mitigating the effects of pressure from the pressure plate. To prevent the trash can from falling when tipping over from the vehicle's roof, a pressure plate is installed above the rim. This pressure plate isn't just a single plate; it connects to the entire movable frame, which moves up and down along pre-defined guide rails within a chute. The force exerted by the pressure plate on the trash can is a combination of the weight of the movable frame and the friction between the frame and the guide rails. Friction varies with factors such as vehicle lubrication, driver control, and even the vehicle's parking angle and weather conditions. It's difficult to predict and fluctuates randomly within a certain range. Therefore, addressing the uncertainty of pressure plate pressure is crucial to achieving high-precision, dynamic, automatic weighing on food waste trucks.

[0004] A similar technical solution to the present invention is patent application number 201510367860.3, which uses a barrel pressure compensation mechanism to address the issue of platen pressure uncertainty. The key technical approach to this mechanism is to use an additional force sensor to measure the platen pressure and use it to compensate for the load cell. While this solution is theoretically feasible, it increases the complexity of the device and is susceptible to damage in harsh operating conditions like those found on food trucks. Summary of the Invention

[0005] The technical problem solved by the present invention is to provide a dynamic automatic high-precision weighing device for a food waste truck. By utilizing the characteristic that a certain angle is generated between the guide lower support part and the movable frame when the bucket is turned over, a linkage hook device is added to ensure that the pressure plate does not press on the edge of the bucket during the rising stage of the bucket. When the bucket rises to the top and starts to turn over and pour the materials, the pressure plate presses the edge of the bucket firmly, thereby achieving the purpose of stable and reliable high-precision measurement, safety of preventing the bucket from falling and no garbage and sewage from being spilled.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a dynamic automatic high-precision weighing device for a food garbage truck, comprising a bucket lifting device and a weighing device; the bucket lifting device comprises a movable frame, a guide lower support part and a guide rail; the movable frame and the guide lower support part move along the guide rail; the bucket lifting device also comprises a power sliding part and its driving device; the guide lower support part is connected to the power sliding part or the movable frame through a rotating shaft; the weighing device is arranged on the power sliding part; and also comprises a linkage hooking device for preventing the pressure plate on the top of the movable frame from pressing the garbage can during weighing; the linkage hooking device is arranged between the guide lower support part and the part connected to the movable frame or between the guide lower support part and the power sliding part.

[0007] Furthermore, a bucket-hanging bearing portion is provided on the power sliding portion; and a force sensor is provided between the bucket-hanging bearing portion and the power sliding portion.

[0008] Furthermore, the linkage hooking device is a device that drives the movable frame to move along with the power sliding part when the trash can rises vertically.

[0009] Furthermore, the linkage hooking device includes a fixed end and a swinging end; the fixed end is fixed on the movable frame; the swinging end is connected to the fixed end through a pin shaft; a cross bar is provided at the end of the swinging end away from the fixed end; the cross bar is resting on the guide lower support part or the part connected to the guide lower support part; the swinging end is connected to the movable frame through a spring.

[0010] Furthermore, the linkage hooking device includes an elastic body; one end of the elastic body is fixed on the movable frame, and the other end is provided with a cross bar; the cross bar is placed on the guide lower support part or the part connected to the guide lower support part.

[0011] Furthermore, the linkage hooking device includes a cross bar arranged on the movable frame and a slider arranged on the guide lower support portion; the slider can slide back and forth relative to the guide lower support portion.

[0012] The beneficial effects of the present invention are as follows: dynamic weighing is adopted, and the garbage is weighed by a force sensor during the vertical upward movement of the garbage bin, which can maintain the original bin emptying speed and save pause time; through the linkage hook device, the pressure plate of the movable frame does not press on the bin edge during the bin lifting and rising stage, ensuring that the movable frame and the pressure plate will not interfere with the weighing accuracy during the weighing process; when the bin begins to tilt and overturn, the pressure plate presses the bin edge firmly, thereby achieving stable and reliable high-precision measurement, and at the same time ensuring that the bin will not fall and the garbage will not be spilled when dumping the garbage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the bucket lifting device;

[0014] Figure 2 This is a schematic diagram of the bucket lifting device in a vertical state;

[0015] Figure 3 This is a structural diagram of the bucket lifting device in a state about to be dumped;

[0016] Figure 4 This is a structural diagram of the linkage hooking device of Example 1;

[0017] Figure 5 This is a structural diagram of the linkage hooking device of Example 2;

[0018] Figure 6 Schematic diagram of the structure of the linkage hooking device in embodiment three.

[0019] The markings in the figure are: 11, trash can; 12, pressure plate; 13, bucket hanging bearing part; 14, force sensor; 15, power sliding part; 16, movable frame; 17, guide rail; 25, guide lower support part; 26, hydraulic cylinder; 27, driving device; 42, fixed end; 43, pin shaft; 44, swing end; 45, cross bar; 46, spring; 54, elastomer; 62, slider. DETAILED DESCRIPTION

[0020] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The embodiments are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0021] like Figures 1 to 3As shown, a dynamic automatic high-precision weighing device for a food garbage truck includes a bucket lifting device and a weighing device; the bucket lifting device includes a movable frame 16, a guide lower support part 25 and a guide rail 17; the movable frame 16 and the guide lower support part 25 move along the guide rail 17; the bucket lifting device also includes a power sliding part 15 and its driving device 27; the guide lower support part 25 is connected to the power sliding part 15 or the movable frame 16 through a rotating shaft; the weighing device is arranged on the power sliding part 15; and also includes a linkage hooking device for preventing the pressure plate 12 on the top of the movable frame 16 from pressing on the garbage can 11 during weighing; the linkage hooking device is arranged between the guide lower support part 25 and the part connected to the movable frame 16 or between the guide lower support part 25 and the power sliding part 15. Currently, there are two main types of garbage trucks, one using a chain and the other a pull rod to drive the power sliding portion 15. In chain-driven garbage trucks, the guide lower support portion 25 is connected to the power sliding portion 15 via a rotating shaft; in pull rod-driven garbage trucks, the guide lower support portion 25 is connected to the movable frame 16 via a rotating shaft. The linkage hooking device functions to: during the vertical lifting phase of the trash can 11, it drives the movable frame 16 to rise along with the power sliding portion 15, thereby preventing the pressure plate 12 at the top of the movable frame 16 from pressing on the trash can 11 and affecting weighing; during the inverted phase of the trash can 11, it disengages from the movable frame 16. During this phase, the power sliding portion 15 presses the edge of the trash can 11 against the pressure plate 12, driving the movable frame 16 to move, thereby pressing the trash can 11 tightly and preventing it from falling or spilling.

[0022] The power sliding portion 15 is provided with a barrel-hanging bearing portion 13 ; a force sensor 14 is provided between the barrel-hanging bearing portion 13 and the power sliding portion 15 .

[0023] The linkage hooking device is a device that drives the movable frame 16 to move along with the power sliding part 15 when the trash can 11 rises vertically.

[0024] The linkage hooking device includes a fixed end 42 and a swinging end 44; the fixed end 42 is fixed on the movable frame 16; the swinging end 44 is connected to the fixed end 42 through a pin shaft 43; a cross bar 45 is provided at the end of the swinging end 44 away from the fixed end 42; the cross bar 45 is placed on the guide lower support part 25 or the part connected to the guide lower support part 25; the swinging end 44 is connected to the movable frame 16 through a spring 46.

[0025] The linkage hooking device includes an elastic body 54 ; one end of the elastic body 54 is fixed to the movable frame 16 , and the other end is provided with a cross bar 45 ; the cross bar 45 is placed on the guide lower support portion 25 or the portion connected to the guide lower support portion 25 .

[0026] The linkage hooking device includes a cross bar 45 provided on the movable frame 16 and a slider 62 provided on the guide lower support portion 25 ; the slider 62 can slide back and forth relative to the guide lower support portion 25 .

[0027] The method adopted by the present invention is to utilize the characteristic that a certain angle is generated between the guide lower support part 25 and the movable frame 16 when the trash can is turned over, and a linkage hook device is installed on the guide lower support plate 25, the movable frame 16 or the part connected to the movable frame 16, so that during the vertical rising stage of the trash can 11, the movable frame 16 moves together with the power sliding part 15, so that during this process, the pressure plate 12 of the movable frame 16 does not contact the trash can 11; during the process of the trash can 11 turning over and tipping over, due to the angle generated between the movable frame 16 and the guide lower support plate 25, the linkage hook device will be separated from the guide lower support part 25 or the movable frame 16, so that the movable frame 16 is separated from the synchronous movement of the power sliding part 15, so that the pressure plate 12 of the movable frame 16 can press the rim of the trash can 11;

[0028] In actual applications, there are many implementation methods that can achieve the purpose of preventing the movable frame 16 and the pressure plate 12 from pressing the edge of the bucket during the lifting stage, and the pressure plate 12 pressing the edge of the bucket during the flipping and unloading stage. Any similar hooking or connecting device that is installed by utilizing the characteristic that a certain angle is generated between the guiding lower support part 25 and the movable frame 16 when flipping the bucket is essentially the same as the present invention.

[0029] Example 1: The linkage hooking device is in the form of a swing rod;

[0030] like Figure 4As shown, the fixed end 42 is welded to the movable frame 16 and connected to the swing end 44 through a pin 43. The other end of the swing end 44 is provided with a cross bar 45, and the cross bar 45 rests on the upper surface of the guide lower support part 25. The swing end 44 is also provided with a spring 46 to pull it to the movable frame 16. When the bucket is lifted up, the driving device 27 drives the power sliding part 15 to rise, and the power sliding part 15 drives the guide lower support part 25 to move upward. The guide lower support part 25 lifts the cross bar 45, thereby driving the movable frame 16 to rise. In order to uniformly distribute the force and increase the load-bearing capacity, a set of linkage hooking devices can be set on each side of the movable frame 16. When the movable frame 16 runs to the top of the guide rail 17, the guide rail 17 starts to turn, and the movable frame 16 will gradually turn the trash can 11 over during the movement. At this time, the movable frame 16 and the end of the guide lower support part 25 begin to separate, and the cross bar 45 will slide down from the guide lower support part 25, completing the tripping and separation. The movable frame 16 loses the lifting of the guide lower support part 25 and stops moving until the power sliding part 15 drives the edge of the trash can 11 to press against the pressure plate 12, and continues to drive the movable frame 16 to move. During this process, the pressure plate 12 presses the edge of the trash can 11 to prevent the trash can 11 from falling. After dumping the garbage, the return stroke begins. The trash can 11 will change from a tilted state to a vertical state. At this time, due to the bending of the top of the guide rail 17, the front surface of the guide lower support part 25 will first contact the cross bar 45. Since the swing end 44 can swing, it will not affect the normal return stroke movement. When the trash can 11 falls to the ground and the movable frame 16 stops moving, the powered sliding portion 15 will continue to move downward for a distance. During this process, the swing end 44, under the tension of the tension spring 46, will pull the cross bar 45 from the front surface of the guide lower support portion 25 back to the upper surface, completing the entire reset action, so that the next bucket of trash can can be dumped.

[0031] Embodiment 2: The linkage hooking device is in the form of an elastic rod;

[0032] like Figure 5 As shown, one end of the elastic body 54 is fixed to the movable frame 16, and the other end is provided with a cross bar 45. The entire working principle is similar to that of the embodiment 1, except that the fixed end 42 and the swing end 44 of the embodiment 1 are replaced by the elastic body 54 which has elasticity itself, and the pin 43 and the spring 46 can be eliminated.

[0033] Example 3, as Figure 6As shown, a slider 62 is provided on the front surface of the guide lower support portion 25. The slider 62 is elastically mounted on the guide lower support portion 25 and can be extended and retracted on the front surface of the guide lower support portion 25. A crossbar 45 is provided on the movable frame 16. When the trash can is initially lifted, the slider 62 applies an upward force to the crossbar 45, thereby lifting the movable frame 16. Properly positioning the slider 62 and crossbar 45 ensures that the pressure plate 12 does not press against the rim of the trash can 11 during the lifting phase. When the movable frame 16 reaches the bend at the top of the guide rail 17, it gradually tilts the trash can along with it. At this point, the movable frame 17 and the guide lower support portion 25 begin to separate, and the crossbar 45 slides off the slider 62, completing the release. After the trash is emptied, the return stroke begins. The trash can then transitions from a tilted position to an upright position. During the return process, the front end surface of the slider 62 first contacts the cross bar 45. When the trash can 11 falls to the ground and the movable frame 16 stops moving, the powered sliding portion 15 will continue to move downward for a distance. During this process, since the slider 62 can slide back and forth on the surface of the guide lower support portion 25, the cross bar 45 will slide over the front of the slider 62, completing the entire return action, and the next bucket of trash can can be dumped.

[0034] In actual application, there are many implementation methods to achieve the purpose of preventing the movable frame 16 and the pressing plate 12 from pressing the edge of the bucket during the lifting stage and firmly pressing the edge of the bucket during the turning and unloading stage.

[0035] The above embodiments should not limit the present invention in any way, and any technical solutions obtained by equivalent replacement or equivalent conversion fall within the protection scope of the present invention.

Claims

1. A dynamic automatic high-precision weighing device for a food waste truck, comprising a bucket lifting device and a weighing device; the bucket lifting device comprises a movable frame (16), a guide lower support portion (25) and a guide rail (17); the movable frame (16) and the guide lower support portion (25) move along the guide rail (17); the bucket lifting device further comprises a power sliding portion (15) and a driving device (27) thereof; the guide lower support portion (25) is connected to the power sliding portion (15) or the movable frame (16) via a rotating shaft; and is characterized in that: The weighing device is arranged on the power sliding part (15); it also includes a linkage hooking device for preventing the pressure plate (12) on the top of the movable frame (16) from pressing the trash can (11) during weighing; the linkage hooking device is arranged between the portion connected to the guide lower support part (25) and the movable frame (16), and the linkage hooking device is a device that drives the movable frame (16) to move with the power sliding part (15) when the trash can (11) rises vertically, and the linkage hooking device includes a fixed end (42) and a swing end (44); the fixed end (42) is fixed on the movable frame (16); the swing end (44) is connected to the fixed end (42) through a pin (43); the swing end (44) is provided with a transverse end at one end away from the fixed end (42). The invention relates to a rod (45); the cross bar (45) is placed on the guide lower support part (25) or the part connected to the guide lower support part (25); the swing end (44) is connected to the movable frame (16) through a spring (46), or the linkage hooking device includes an elastic body (54); one end of the elastic body (54) is fixed to the movable frame (16), and the other end is provided with a cross bar (45); the cross bar (45) is placed on the guide lower support part (25) or the part connected to the guide lower support part (25), or the linkage hooking device includes a cross bar (45) provided on the movable frame (16) and a slider (62) provided on the guide lower support part (25); the slider (62) can slide back and forth relative to the guide lower support part (25).

2. The dynamic automatic high-precision weighing device for a food waste truck according to claim 1, characterized in that: A barrel-hanging bearing portion (13) is provided on the power sliding portion (15); and a force sensor (14) is provided between the barrel-hanging bearing portion (13) and the power sliding portion (15).

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