CN213494825U

CN213494825U - Screening bucket and screening system

Info

Publication number: CN213494825U
Application number: CN202021948084.9U
Authority: CN
Inventors: 张党生
Original assignee: Chengdu Dajia Hydraulic Machinery Co ltd
Current assignee: Chengdu Dajia Hydraulic Machinery Co ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2021-06-22
Anticipated expiration: 2030-09-08

Abstract

The utility model provides a conveniently clear up screening bucket and screening system of switch ballast relates to ballast screening equipment technical field. The screening bucket comprises a bucket body, wherein the front end of the bucket body is provided with a connecting lug used for being connected with excavating equipment, the rear end of the bucket body is provided with bucket teeth, a screen is arranged in a bucket cavity of the bucket body, the screen divides the bucket cavity of the bucket body into a screen cavity and a negative pressure cavity which are vertically arranged, and a suction pipe communicated with the negative pressure cavity is arranged on the bucket body. The utility model discloses it is little to the railway operation influence, convenient to use, therefore the more and local ballast clearance construction that the traffic flow is big of switch such as specially adapted station.

Description

Screening bucket and screening system

Technical Field

The utility model relates to a ballast screening equipment technical field, specificly relate to a screening bucket and screening system.

Background

The bottom of railway rail will usually be laid the ballast, and the ballast not only can support fixedly to the rail, can also provide buffering elasticity for the rail to in time the drainage is carried out for the rail. Because the ballast is exposed on the roadbed, dust or sand in wind can be left in the ballast for a long time, in addition, impurities such as dust and sand can also fall off in the running of the train, if the dust and the impurities are not removed, the ballast is not only easy to form plates, but also a lot of water can be accumulated in the ballast during raining and permeates into the roadbed, so that the roadbed becomes loose and soft, the problems of slurry turning, collapse and the like occur, and the potential safety hazard is caused to the running of the train. Therefore, the railway department cleans the ballast once every two to three years to remove impurities in the ballast.

At present, the ballast cleaning work is usually carried out by adopting a ballast screening machine, the ballast is firstly taken off from the lower surface of the sleeper during cleaning, then screening is carried out, soil, sand and other impurities in the ballast are screened out, and finally the screened ballast is sent back to the lower surface of the sleeper. The slag screening machine has the problems that the labor intensity of workers is high, in addition, the slag screening machine can only screen and clean the main line of a railway, the operation is inconvenient at the turnout, and the screening and cleaning work cannot be carried out.

In order to solve the problems, patent CN2443993 discloses a switch ballast cleaning machine, which comprises a material removing box, wherein a plurality of spiral sheets are arranged in the material removing box, a hose is arranged at the front end of the material removing box, a dust suction head is arranged at the end part of the hose, a fan is arranged at the rear end of the material removing box, and the fan is connected with a motor. When the turnout ballast cleaning machine works, the dust suction head is inserted into ballast, impurities such as sand, soil and dust can be sucked into the stripping box under the action of wind power generated by the fan, the impurities move from the middle to the edge under the action of the spiral sheet, and finally fall down at the cylindrical part of the stripping box and enter the impurity outlet. When the cleaning machine is used, the dust suction head is difficult to insert into the ballast, and the resistance between the ballast after the plate is formed is large, so that the better cleaning effect can be achieved only after the ballast is loosened, and the cleaning machine for the turnout ballast is very inconvenient to use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a screening bucket and screening system of conveniently clearing up switch ballast are provided.

The utility model provides a technical scheme that its technical problem adopted is: the screening bucket comprises a bucket body, wherein the rear end of the bucket body is provided with a connecting lug used for being connected with excavating equipment, the front end of the bucket body is provided with bucket teeth, a screen is arranged in a bucket cavity of the bucket body, the screen divides the bucket cavity of the bucket body into a screen cavity and a negative pressure cavity which are vertically arranged, and a suction pipe communicated with the negative pressure cavity is arranged on the bucket body.

Furthermore, an air blowing pipe is further arranged on the excavator bucket body and communicated with the negative pressure cavity.

Furthermore, the air outlet of the air blowing pipe is arranged towards the air inlet of the suction pipe.

Furthermore, a plurality of dust suction ports which are arranged along the direction from the rear end to the front end of the bucket body are arranged on the upper edges of the left side plate and the right side plate of the bucket cavity of the bucket body, and the dust suction ports are communicated with the suction pipe.

The screening system comprises a rail operation trolley, and excavating equipment and dust collecting and removing equipment which are arranged on the rail operation trolley; the excavating equipment adopts the screening bucket, and an air suction pipe of the dust collection and removal equipment is connected with the suction pipe.

Further, dust absorption dust collecting equipment includes the outer jar of body and installs the internal cyclone at the outer jar, the aspiration channel sets up outer jar of body lateral wall upper end, and to the outer jar of body tangential is admitted air and is set up, cyclone includes fan and barrel, the barrel is equipped with the air-supply line and goes out the tuber pipe, fan air inlet end with go out the union coupling, be equipped with the interval between barrel lateral wall and the outer jar of body lateral wall in order to form the dust fall passageway, be equipped with the dust fall structure of filtering impurity in this passageway air current in the dust fall passageway.

Further, the dust fall structure is hung in midair by many the chain of outer jar body roof constitutes, the chain is along dust fall passageway width direction arranges the setting.

Further, the height of the air inlet pipe is not lower than that of the air suction pipe.

Furthermore, the direction of the air inlet pipe towards the tangential air inlet of the outer tank body is opposite to the direction of the air inlet pipe towards the tangential air inlet of the cylinder body.

Further, the fan is driven by a hydraulic pump of the excavating equipment through a hydraulic motor.

The utility model has the advantages that: this screening bucket and screening system dig the in-process of sediment, pine sediment and just realized the clearance to switch ballast, efficient, effectual, and need not transport away the ballast at the clearance in-process, can backfill at once after clearing up well, therefore little to the railway operation influence, convenient to use, therefore the more and big local ballast clearance construction of traffic flow of switch such as specially adapted station.

Drawings

Fig. 1 is a schematic structural view of a screening bucket of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

figure 3 is a schematic diagram of the screening system of the present invention;

FIG. 4 is a schematic view of the dust collecting and removing apparatus;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 6 is a cross-sectional view taken along C-C of FIG. 4;

shown in the figure: screening bucket 1, rail operation platform truck 2, excavating equipment 3, dust absorption and removal equipment 4, hydraulic motor 5, bucket body 11, bucket tooth 12, screen cloth 13, negative pressure cavity 14, screen cavity 15, suction pipe 16, gas blow pipe 17, dust absorption pipe 18, engaging lug 19, outer tank 41, cyclone 42, dust fall channel 43, chain 44, aspiration channel 411, barrel 421, fan 422, air-supply line 423, air-out pipe 424.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1 and 2, the utility model discloses a screening bucket 1, including bucket body 11, bucket body 11 rear end is equipped with the engaging lug 19 that is used for being connected with excavating equipment's arm, and the front end is provided with bucket tooth 12, bucket body 11 fill intracavity is equipped with screen cloth 13, screen cloth 13 will sieve chamber 15 and negative pressure chamber 14 that arrange about the 11 fill chambeies of bucket body are cut apart into, be equipped with on bucket body 11 with the communicating straw 16 in negative pressure chamber 14.

In the figure, the screen 13 is formed of partition bars provided at intervals in the cavity of the bucket body 11 in order to secure the strength of the screen. The screen mesh 13 is correspondingly set according to the grade of the cleared ballast.

After the screening excavator bucket is adopted, the mechanical arm of the excavating equipment 3 excavates the screening excavator bucket 1 between turnout sleepers, so that ballast needing to be cleaned between the turnout sleepers is shoveled into the screening cavity 15, and impurities in the ballast in the screening cavity 15 can fall into the negative pressure cavity 14 by shaking the screening excavator bucket. The dust-absorbing and dust-removing equipment 4 sucks air in the negative pressure cavity 14 through the suction pipe 16, so that the negative pressure cavity 14 generates negative pressure, and impurities screened from the screen 13 can be sucked away, and the aim of clearing ballast is fulfilled. After cleaning, the ballast in the sieve chamber 15 is poured back into the pit. Adopt this screening bucket, can dig the clearance to switch ballast just to the in-process of sediment, pine sediment, compare current switch ballast cleaning machine, its cleaning efficiency is higher, and the effect is better, and need not transport away the ballast at the clearance in-process, can backfill at once after clearing up well, it is little (can clear up at railway idle period) to the railway operation influence, convenient to use, therefore the more and big local ballast clearance construction of car flow of switch such as specially adapted station.

As shown in fig. 2, the excavator bucket body 11 is further provided with an air blowing pipe 17, and the air blowing pipe 17 is communicated with the negative pressure cavity 14. Therefore, air flow can be blown into the negative pressure cavity 14 through the air blowing pipe 17, and the air flow can disturb impurities in the negative pressure cavity 14, so that the dust collection and removal equipment 4 can suck the impurities out conveniently. Most preferably, the air outlet of the air blowing pipe 17 is arranged towards the air inlet of the suction pipe 16, i.e. the air blowing pipe 17 blows air towards the air inlet of the suction pipe 16.

Screening bucket is digging sediment, pine sediment in-process and can produce the dust, in order to prevent the dust diffusion, the utility model discloses a screening bucket's 11 fill chamber left and right sides board top edge equipartitions of bucket body have been put a plurality of dust absorption mouths 181 of arranging to the front end direction from bucket body 11 rear ends, and dust absorption mouth 181 passes through pipeline and 16 intercommunications of straw. Specifically, the upper edges of the left and right side plates of the bucket cavity of the bucket body 11 are respectively provided with a dust suction pipe 18 with one end closed and the other end communicated with a suction pipe 16, and the dust suction port 181 is composed of a plurality of strip-shaped holes arranged along the length direction of the dust suction pipe 18. Of course circular holes are also possible. The dust suction port 181 may face outward (toward the opening of the chamber) or toward the center of the chamber. Specifically, in the drawing, the dust suction port 181 is outward and forms an angle of 45 ° with the plane of the symmetry center of the bucket cavity of the bucket body 11, that is, the direction of the dust suction port is outward in a manner of forming an angle of 45 ° with the plane of the symmetry center of the bucket cavity of the bucket 3, so that the dust suction effect is best.

As shown in figure 3, the application also provides a screening system convenient for cleaning turnout ballast, which comprises a track operation trolley 2, and excavating equipment 3 and dust collecting and removing equipment 4 which are arranged on the track operation trolley 2. The excavating equipment 3 adopts the screening bucket 1, and the air suction pipe 411 of the dust collection and dust removal equipment 4 is connected with the suction pipe 16.

When the screening system is used, the track operation trolley 2 drives on a rail, the mechanical arm of the excavating equipment 3 excavates the screening excavator bucket 1 between turnout sleepers, so that ballast needing to be cleaned between the turnout sleepers is shoveled into the screening cavity 15, the screening excavator bucket is rocked to enable impurities in the ballast to fall into the negative pressure cavity 14, the dust collection and dust removal equipment 4 sucks air in the negative pressure cavity 14 through the suction pipe 16, the negative pressure cavity 14 generates negative pressure, so that the impurities screened from the screen 13 can be sucked away, and the purpose of cleaning the ballast is achieved. After cleaning, the ballast in the sieve chamber 15 is poured back into the pit. This screening system digs the sediment, the in-process of pine sediment has just realized the clearance to switch ballast, compares current switch ballast descaling machine, and its cleaning efficiency is higher, and the effect is better, and need not transport the ballast away at the cleaning process, can backfill at once after clearing up well, and it is little (can clear up in railway idle period) to the railway operation influence, convenient to use, therefore the more and big local ballast clearance construction of traffic flow of switch such as specially adapted station.

The dust-collecting and dust-removing equipment 4 can be gravity dust-removing equipment, filtering dust-removing equipment, etc. The ballast contains various impurities, the dust-collecting and dust-removing equipment 4 sucks more impurities in the airflow from the negative pressure cavity 14, the particles of the impurities are different in size, and the effect is not ideal enough by adopting gravity dust-removing equipment and filtering dust-removing equipment. As shown in fig. 4 and 5, in the sieving system of the present invention, the dust collecting and removing device 4 includes an outer tank 41 and a cyclone 42 installed in the outer tank 41. The air suction pipe 411 is arranged at the upper end of the side wall of the outer tank body 41 and tangentially introduces air to the outer tank body 41. Like current cyclone structure, cyclone 42 includes fan 422 and barrel 421, and barrel 421 is equipped with air-supply line 423 and goes out tuber pipe 424, and barrel 421 is formed by connecting cylinder section and circular cone section, and air-supply line 423 sets up on the cylinder section of barrel 421 to the setting of admitting air to barrel 421 tangential, and fan 422 air inlet end is connected with play tuber pipe 424. A space is arranged between the side wall of the cylinder 421 and the side wall of the outer tank 41 to form a dust falling channel 43, and a dust falling structure for filtering impurities in air flow in the channel is arranged in the dust falling channel 43. The fan 422 is preferably a vortex fan. During dust removal, the rotating fan 422, the air suction pipe 411 sucks air, because the air suction pipe 411 is arranged outside the tangential air inlet of the outer tank 41, the air flow tangentially enters the outer tank 41 and then forms a rotating air flow in the outer tank 41, the air flow flows in the dust falling channel 43, larger particles in the air flow sink to the bottom of the outer tank 41 under the dual actions of centrifugal force and a dust falling structure, so that most of impurities in the air flow are removed, the impurity concentration in the air flow is reduced, the remaining fine impurities enter the barrel 421 with the smaller diameter than the outer tank 41 through the air inlet pipe 423, the rotating radius of the air flow is reduced, the centrifugal force applied to the impurities in the air flow is increased, the remaining fine impurities sink to the bottom of the barrel 421 under the action of the centrifugal force, and finally fall to the bottom of the outer tank 41 through the bottom of the barrel. Finally, the clean air flow passes through the air outlet pipe 424 and the fan 422 and is discharged from the dust collecting and removing device. This dust absorption dust collecting equipment 4 adopts and to detach most great granule impurity in the air current earlier, has reduced the impurity concentration who gets into cyclone 42, and rethread cyclone 42 gets rid of remaining part tiny impurity, and the two-stage removes dust, and dust removal effect is good, can effectively reduce the dust pollution that screening system during operation produced.

It can be understood that the cylinder 42 is disposed at the center of the outer can 41 as much as possible, i.e. the two are coaxial as much as possible.

The dust fall structure can be the mesh board of setting in dust fall passageway 43, but the mesh board has the easy problem of blockking up of mesh, and this not only influences the dust fall effect, still can increase dust absorption dust collecting equipment's air resistance greatly. In order to solve the above problem, the dustfall structure is specifically configured by a plurality of chains 44 suspended from the top plate of the outer tank 41, and the chains 44 are arranged along the width direction of the dustfall path 43. Thus, when particles are mixed between the chains 44, the chain force increases, and the chains swing, so that the particles fall down and are not blocked.

Wherein, in order to reduce the chance of impurities entering the cylinder 421, it is preferable that the height of the air inlet pipe 423 is not lower than the height of the air suction pipe 411. The tangential air inlet direction of the air suction pipe 411 towards the outer tank body 41 is opposite to the tangential air inlet direction of the air inlet pipe 423 towards the cylinder body 421, namely, the tangential air inlet direction is clockwise, and the tangential air inlet direction is anticlockwise (refer to fig. 6). Thus, compared with the same direction arrangement, the structure can further reduce the chance of impurities entering the cylinder 421.

The fan 422 may be electrically driven, and in the figure, the fan 422 is driven by a hydraulic pump of the excavating equipment 3 through a hydraulic motor 5, and thus, is more convenient.

Claims

1. Screening bucket, including bucket body (11), bucket body (11) rear end is equipped with engaging lug (19) that are used for being connected with excavating equipment, and the front end is provided with bucket tooth (12), its characterized in that: the bucket is characterized in that a screen (13) is arranged in a bucket cavity of the bucket body (11), the screen (13) divides the bucket cavity of the bucket body (11) into a screen cavity (15) and a negative pressure cavity (14) which are arranged up and down, and a suction pipe (16) communicated with the negative pressure cavity (14) is arranged on the bucket body (11).

2. A screening bucket as defined in claim 1 wherein: the excavator bucket body (11) is further provided with an air blowing pipe (17), and the air blowing pipe (17) is communicated with the negative pressure cavity (14).

3. A screening bucket as defined in claim 2 wherein: the air outlet of the air blowing pipe (17) is arranged towards the air inlet direction of the suction pipe (16).

4. A screening bucket as defined in claim 1 wherein: the upper edges of the left and right side plates of the bucket cavity of the bucket body (11) are respectively provided with a plurality of dust suction ports (181) which are arranged along the direction from the rear end to the front end of the bucket body (11), and the dust suction ports (181) are communicated with the suction pipe (16).

5. Screening system, its characterized in that: comprises a track operation trolley (2), and excavating equipment (3) and dust collecting and removing equipment (4) which are arranged on the track operation trolley (2); the excavating equipment (3) adopts the screening bucket (1) as claimed in claims 1 to 4, and the suction pipe (411) of the dust suction and removal equipment (4) is connected with the suction pipe (16).

6. A screening system according to claim 5, wherein: dust absorption dust collecting equipment (4) include the outer tank body (41) and install cyclone (42) in the outer tank body (41), aspiration channel (411) set up outer tank body (41) lateral wall upper end, and to outer tank body (41) tangential admits air and sets up, cyclone (42) are including fan (422) and barrel (421), barrel (421) are equipped with air-supply line (423) and go out tuber pipe (424), fan (422) air inlet end with it connects to go out tuber pipe (424), be equipped with the interval between barrel (421) lateral wall and outer tank body (41) lateral wall in order to form dust fall passageway (43), be equipped with the dust fall structure of filtering impurity in this passageway air current in dust fall passageway (43).

7. A screening system according to claim 6, wherein: the dust fall structure is formed by a plurality of chains (44) suspended on the top plate of the outer tank body (41), and the chains (44) are arranged along the width direction of the dust fall channel (43).

8. A screening system according to claim 6, wherein: the height of the air inlet pipe (423) is not lower than that of the air suction pipe (411).

9. A screening system according to claim 8, wherein: the direction that aspiration channel (411) was to outer jar body (41) tangential admits air with air-supply line (423) are to barrel (421) tangential direction opposite sets up.

10. A screening system according to claim 6, wherein: the fan (422) is driven by a hydraulic pump of the excavating equipment (3) via a hydraulic motor (5).