Scraper blade with variable cross section

Abstract

The utility model belongs to the technical field of special devices of compression type garbage trucks, and particularly discloses a variable cross-section scraper which comprises an inner buckling arc-shaped panel and a back plate of an upper arch arc-shaped structure, the arc-shaped angle of the back plate and the panel enables component force in the compression direction to be larger, the compression ratio is improved, and when a feeding device dumps garbage, the compression ratio is improved. The back plate structure ensures that garbage is easily guided into a pre-compression area at the rear end of the lower portion of the filler, the garbage is not deposited on the scraper, the garbage is firstly extruded and crushed in a pre-compression cavity and then enters a compression cavity in the process that the scraper rotates forwards, the scraper rotates to the foremost end in the compression cavity, the garbage is extruded again, and the garbage is compressed again. And in the upward moving process of the sliding plate and under the reverse acting force of the push plate, the garbage is extruded and formed through bidirectional stress, after the structure is optimized, the scraping plate can increase the compression force borne by the garbage, plastic deformation of the garbage as much as possible in the loading operation process is achieved, the compression ratio is increased, and the net load rate of the whole vehicle is increased.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the special device technical field of compression type garbage truck, specifically discloses a variable cross section scraper. BACKGROUND

[0002] With the development of city needs and environmental awareness, compression type garbage trucks are in increasing demand in cities. In the city sanitation system, compression type garbage trucks are the main force of garbage collection and transportation, responsible for transporting garbage from all corners of the city to the garbage disposal plant or transfer station.

[0003] The upper part of the traditional compression type garbage truck includes a box body, a push plate, a filler, a sliding plate, a scraper, and a feeding device. For example, the rear compression type garbage truck disclosed in application No. 202011319275.3, the sliding plate is slidingly connected with the inner side wall of the filler, and the scraper is rotatably connected with the lower end of the sliding plate through a rotating shaft. The compression process of household garbage is to pour the garbage into the filler through the feeding device, the scraper rotates outward to open, the sliding plate drives the scraper to move downward together, inserts into the garbage to compress, the scraper rotates forward to further compact the garbage, the sliding plate pulls the scraper to move upward after the scraper rotates to the position, compacts and fills the garbage into the garbage box, and then returns to the starting position. In this process, due to the limitations of the original structure of the scraper, the compression force generated by the scraper is limited, and in addition, due to the self-tension of the garbage, it is not easy to form plastic deformation, but only elastic deformation, resulting in low single compression ratio and low net load rate of the whole vehicle. SUMMARY

[0004] To solve the problems in the background art, the utility model discloses a variable cross section scraper, which includes a back plate and a face plate. After structural optimization, the scraper can increase the compression force of the garbage, realize as much plastic deformation of the garbage as possible during loading operation, improve the compression ratio, and improve the net load rate of the whole vehicle.

[0005] To achieve the above-mentioned purposes, the utility model adopts the following technical solutions:

[0006] A variable cross section scraper, the scraper is rotatably connected with the sliding plate in the filler of the compression type garbage truck. Under the action of the hydraulic system, the sliding plate can drive the scraper to move up and down relative to the filler. The scraper includes an upper arch-shaped back plate, ear seats are arranged on both sides of the back plate, a front plate inclined to extend forward is connected to the lower edge of the back plate, an arc-shaped face plate is arranged between the back plate, the ear seats, and the front plate, the face plate is an inner buckle arc structure, the back plate, the ear seats, the front plate, and the face plate together enclose a variable cross section closed space that gradually shrinks from the middle to both ends, rotating shaft holes are arranged at corresponding positions in the middle of the ear seats, and the scraper is rotatably connected with the sliding plate through the rotating shafts arranged in the rotating shaft holes.

[0007] Further, the variable cross-section scraper is provided with a plurality of protruding ratchet plates on the side of the panel away from the back plate.

[0008] Further, the variable cross-section scraper is provided with a plurality of protruding ratchet plates on the side of the panel away from the back plate.

[0009] Further, the variable cross-section scraper is provided with a plurality of protruding ratchet plates on the side of the panel away from the back plate.

[0010] Further, the variable cross-section scraper is provided with a plurality of protruding ratchet plates on the side of the panel away from the back plate.

[0011] Further, the variable cross-section scraper is provided with a plurality of protruding ratchet plates on the side of the panel away from the back plate.

[0012] Compared with the prior art, the variable cross-section scraper has the following advantages:

[0013] The variable cross-section scraper is provided with a variable cross-section scraper according to the characteristics of the loading cycle, the inner buckle arc of the panel and the arc angle of the back plate of the upper arch arc structure are greater in the compression direction, the compression ratio is improved, the compression force of the scraper is increased after the structure is optimized, the plastic deformation of the garbage is realized as much as possible during the loading operation, the compression ratio is improved, the net load rate of the whole vehicle is improved, the sliding plate and the scraper divide the space of the sliding plate and the scraper at the lower part of the filler into two areas, i.e. a pre-compression cavity and a compression cavity, the loading cycle starts, the back plate structure ensures that the garbage is easily guided into the pre-compression area at the lower end of the filler, the garbage is not deposited on the scraper, the garbage is first extruded and crushed in the pre-compression cavity during the forward rotation of the scraper, and then enters the compression cavity, the scraper rotates to the front end in the compression cavity, the garbage is extruded again, and the garbage is extruded in two directions during the upward movement of the sliding plate and the reverse force of the push plate, the final area formed by the scraper, the sliding plate and the push plate is smaller than the repose angle of the garbage, the garbage does not collapse, and the special structure of the scraper ratchet plate can effectively break large garbage during the whole compression process. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a schematic view of the installation structure of the variable cross-section scraper of the utility model;

[0015] Figure 2It is the three-dimensional structure schematic view of the variable cross-section scraper of the utility model;

[0016] Figure 3 It is the structure schematic view of the pre-compression area and compression cavity of the filler in the utility model;

[0017] In the above-mentioned drawing: 1 - box body; 2 - push plate; 21 - push plate body; 3 - filler; 4 - sliding plate; 5 - scraper; 51 - ear seat; 52 - back plate; 53 - front plate; 54 - panel; 55 - ratchet plate; 56 - hinged shaft hole; 57 - pivot hole; 6 - feeding device; 71 - push plate oil cylinder; 72 - filler lifting oil cylinder; 73 - sliding plate oil cylinder; 74 - scraper oil cylinder; 100 - pre-compression area; 200 - compression cavity. DETAILED DESCRIPTION

[0018] In order to better understand the utility model, the contents of the utility model are further illustrated below in conjunction with examples, but the contents of the utility model are not limited to the following examples only.

[0019] In conjunction with the accompanying Figures 1-3 , a variable cross-section scraper is described in detail, the scraper 5 is rotationally connected with the sliding plate 4 in the compression type garbage truck filler 3, the sliding plate oil cylinder 73 is arranged between the inner wall of the filler 3 and the sliding plate 4, the sliding plate oil cylinder 73 can drive the sliding plate 4 to slide up and down relative to the filler 3 when extending and retracting, the sliding plate 4 can drive the scraper 5 to move up and down relative to the filler 3 when sliding, the scraper 5 includes the back plate 52 of upper cambered arc structure, the upper cambered arc structure of the back plate 52 is not easy to accumulate garbage and is easy to guide garbage into the pre-compression cavity, the ear seat 51 is arranged on both sides of the back plate 52, the front plate 53 extending obliquely forward is connected to the lower edge of the back plate 52, the arc-shaped panel 54 is arranged between the back plate 52, the ear seat 51 and the front plate 53, the panel 54 is an inner buckle arc structure, the inner buckle arc type of the panel 54 and the arc angle of the back plate 52 make the component force in the compression direction larger, improve the compression ratio, the back plate 52, the ear seat 51, the front plate 53 and the panel 54 jointly enclose a variable cross-section closed space gradually shrinking from the middle to both ends, the pivot hole 57 is arranged at the corresponding position in the middle of the ear seat 51, the scraper 5 is rotationally connected with the sliding plate 4 through the pivot arranged in the pivot hole 57, the final area formed by the scraper 5, the sliding plate 4 and the push plate is smaller than the repose angle of garbage in the front and back directions, and the garbage does not collapse;

[0020] When collecting garbage by using the compression type garbage truck, for example, Figure 1 and Figure 3As shown, the garbage is poured into the filler 3 by the feeding device 6, the scraper 5 is first rotated outward to open, the slide plate 4 drives the scraper 5 to move downward together, inserts into the garbage to compress, the back plate 52, the front plate 53 and the face plate 54 contact with the garbage, then the scraper 5 rotates forward to further compact the garbage, after the scraper 5 rotates to the position, the slide plate 4 pulls the scraper 5 to move upward, the garbage is compacted and filled into the garbage can 1, and then returns to the starting position. After the structure is optimized, the scraper 5 can increase the compression force of the garbage, realize the plastic deformation of the garbage as much as possible during the loading operation, improve the compression ratio, and improve the net load rate of the whole vehicle.

[0021] As an optional design, the scraper with variable cross-section is preferably provided with a plurality of protruding ratchet plates 55 on the side of the face plate 54 away from the back plate 52. The special structure of the ratchet plate 55 can effectively break large garbage during the whole compression process.

[0022] As an optional design, the scraper with variable cross-section is preferably provided with a plurality of protruding ratchet plates 55 on the side of the face plate 54 away from the back plate 52. The special structure of the ratchet plate 55 can effectively break large garbage during the whole compression process.

[0023] As an optional design, the scraper with variable cross-section is preferably provided with a plurality of protruding ratchet plates 55 on the side of the face plate 54 away from the back plate 52. The special structure of the ratchet plate 55 can effectively break large garbage during the whole compression process.

[0024] As an optional design, the scraper with variable cross-section is preferably provided with a plurality of protruding ratchet plates 55 on the side of the face plate 54 away from the back plate 52. The special structure of the ratchet plate 55 can effectively break large garbage during the whole compression process.

[0025] As an optional design, the variable-section scraper is preferably provided with a scraper oil cylinder 74 between the scraper 5 and the slide plate 4, and a hinge shaft hole 56 is arranged at a corresponding position on the upper end of the lug seat 51, the cylinder body of the scraper oil cylinder 74 is hingedly connected with the slide plate 4, the end of the telescopic rod of the scraper oil cylinder 74 is hingedly connected with the scraper 5 through a hinge shaft arranged in the hinge shaft hole 56, and the scraper 5 can be driven to rotate relative to the slide plate 4 when the scraper oil cylinder 74 is telescoped, so that the structure of the scraper and the slide plate is optimized to make the compression force borne by the garbage larger, the plastic deformation of the garbage is realized as much as possible during the loading operation, the compression ratio is improved, and the net load rate of the whole vehicle is improved.

[0026] The working process of the utility model is as follows:

[0027] When the loading cycle starts and the garbage is poured by the feeding device 6, the garbage is not easy to deposit on the back plate 52 and is easy to be guided into the pre-compression area 100 at the rear end of the lower part of the filler 3, and in the process that the scraper 5 is turned forward under the pushing of the scraper oil cylinder 74, the garbage is first extruded and crushed in the pre-compression cavity 100 under the action of the front plate 53 and the back plate 52, and then the face plate 54 and the ratchet plate 55 are extruded again in the compression cavity 200 under the continuous pushing of the scraper oil cylinder 74, the slide plate 4 and the scraper 5 are moved upward under the pulling of the slide plate oil cylinder 73, the garbage is subjected to the force of the slide plate 4 and the scraper 5 at the same time, the back pressure of the garbage is generated by the push plate 2 through the push plate oil cylinder 71, the garbage is extruded and formed under the action of the bidirectional force, the inner buckle arc type of the face plate 54 and the arc angle of the back plate 52 with the upper arch arc structure make the component force in the compression direction larger, the compression ratio is improved, the compression force borne by the garbage is increased after the structure optimization of the scraper, the plastic deformation of the garbage is realized as much as possible during the loading operation, the compression ratio is improved, and the net load rate of the whole vehicle is improved.

[0028] The above description is only the application implementation mode of the utility model, but the protection scope of the utility model is not limited to this, and the right scope of the utility model cannot be limited by this, and any equivalent change according to the technical scheme of the utility model should be covered in the protection scope of the utility model.

Claims

1. A scraper with a variable cross-section, wherein the scraper is rotatably connected to a sliding plate inside a compactor of a garbage truck, and under the action of a hydraulic system, the sliding plate can drive the scraper to move up and down relative to the compactor, characterized in that: The scraper comprises a back plate with an upper arc-shaped structure, ear seats arranged on both sides of the back plate, a front plate connected to the lower edge of the back plate and extending forward, an arc-shaped panel arranged between the back plate, the ear seats and the front plate, the panel being an inner buckle arc-shaped structure, the back plate, the ear seats, the front plate and the panel together forming a variable cross-section closed space that gradually shrinks from the middle to both ends, and rotating shaft holes arranged at corresponding positions in the middle of the ear seats.

2. The variable cross-section flight of claim 1, wherein: A plurality of protruding ratchet plates are arranged at intervals on the side of the panel away from the back plate.

3. A variable cross-section flight according to claim 1 or 2, characterised in that: When the slide plate drives the scraper to move downward to the stroke endpoint, the slide plate and the scraper can jointly divide the space in the filler into a pre-compression area and a compression cavity.

4. The variable cross-section flight of claim 3, wherein: The bottom plate of the compression type garbage truck is loaded with a box body, a push plate is installed in the box body, the push plate can push out unloaded garbage under the action of a push plate oil cylinder, and the filler is arranged at the rear end of the box body, and the compression cavity of the filler is in communication with the inner cavity of the box body.

5. The variable cross-section flight of claim 3, wherein: The ratchet plates extend along the bending direction or the horizontal direction of the panel.

6. The variable cross-section flight of claim 3, wherein: A scraper oil cylinder is arranged between the scraper and the slide plate, hinged shaft holes are arranged at corresponding positions on the upper end of the ear seats, the cylinder body of the scraper oil cylinder is hingedly connected to the slide plate, and the distal end of the telescopic rod of the scraper oil cylinder is hingedly connected to the scraper through the hinged shaft arranged in the hinged shaft hole.

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