A sand adding and sand pumping device for multiple unit trains

Abstract

The present invention relates to a sand adding and sand pumping device for multiple unit trains, which includes a sand adding device and a sand pumping device arranged on a movable trolley. The sand adding device includes a sand storage tank, on the upper part of which a filter screen is provided, and a vibrator is arranged on the filter screen. The lower end of the sand storage tank communicates with a sand leakage tank, and the lower end of the sand leakage tank is connected to a sending cylinder through a pipeline 1. The sending cylinder is connected to the sand box of the multiple unit train through a connecting component. The sand pumping device includes a sand pumping pipe for pumping out the sand in the sand box of the multiple unit train. The sand pumping pipe communicates with a negative pressure generator. One end of the negative pressure generator is connected to a high-pressure air source through an air pipe, and the other end of the negative pressure generator is connected to a dust removal component through a connecting pipe. A sand pumping plate valve is installed on the connecting pipe. By arranging the sand adding device and the sand pumping device on the movable trolley, the sand pumping device and the sand adding device can be moved conveniently by driving the trolley. The sand adding device and the sand pumping device are integrally arranged, with convenient conversion and easy operation.

Description

Technical Field

[0001] The present invention relates to the technical field of train sand adding devices, and particularly to a sand adding and sand pumping device for EMUs. Background Art

[0002] The sand spreading device of a train is mainly used to increase the friction coefficient between the wheel set surface and the track surface during vehicle starting and braking, and improve the braking performance of vehicle operation. The sand spreading device adopts a differential pressure type sand spreading unit, which is composed of a sand spreading control module, a sand box, a sand spreading unit, a sand box cover and a sand spreading heater. Among them, the sand box is used to store sand, and the sand box is provided with a sand injection port. Sand needs to be injected into the sand box through the sand injection port before each train starts.

[0003] The railway has very strict requirements for sand. There are iron standards that specify technical standards for particle size, dryness, etc. However, in the traditional manual sand adding method, the qualified sand after treatment is directly added into the train sand box after being transported to the train sand adding port. If the sand caking phenomenon occurs during transportation, it will affect the safety of train operation. When a large particle and dust caking block the sand box of an EMU, it is necessary to pump out the sand in the sand box, which is difficult to operate and time-consuming. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, a sand adding and sand pumping device for EMUs is proposed to solve the problems raised in the above background art.

[0005] In order to achieve the above purpose, the present invention is realized by the following technical solutions:

[0006] A sand adding and sand pumping device for EMUs includes a sand adding device and a sand pumping device arranged on a movable trolley. The sand adding device includes a sand storage tank. A filter screen is arranged on the upper part of the sand storage tank, and a vibrator is arranged on the filter screen. The lower end of the sand storage tank communicates with a sand leakage tank. The lower end of the sand leakage tank is connected to a sending cylinder through a pipeline I. The sending cylinder is connected to the train sand box through a connection component. The sand pumping device includes a sand pumping pipe for pumping out the sand in the train sand box. The sand pumping pipe communicates with a negative pressure generator. One end of the negative pressure generator is connected to a high-pressure air source through an air pipe. The other end of the negative pressure generator is connected to a dust removal component through a connecting pipe. A sand pumping plate valve is installed on the connecting pipe.

[0007] As a further technical solution of the present invention: The connection component includes a connector body. The connector body includes a circular cover plate and a retaining ring fixedly arranged on one side of the cover plate. The cover plate is provided with an air return port and a sand inlet. The outer guiding parts extend outwards on the sides of the air return port and the sand inlet away from the retaining ring. The outer guiding part of the sand inlet is connected to a sand inlet pipe, and the other end of the sand inlet pipe is connected to the sending cylinder. The outer guiding part of the air return port is connected to an air return pipe, and the other end of the air return pipe is connected to the dust removal component.

[0008] As a further technical solution of the present invention: an internal guiding portion extends inwards from the side of the sand inlet close to the retaining ring, and a plurality of small holes are formed in the internal guiding portion.

[0009] As a further technical solution of the present invention: an installation groove is formed between the retaining ring and the cover plate, an expansion airbag is fixedly installed on the inner circumference of the installation groove, the expansion airbag is communicated with an expansion airbag air pipe, and a hole for the passage of the expansion airbag air pipe is formed in the retaining ring.

[0010] As a further technical solution of the present invention: the dust removal assembly includes a dust removal pipe connected to the return air pipe, one end of the dust removal pipe is communicated with a cyclone separator, the upper end of the cyclone separator is connected to a dust removal cloth bag, and the lower end of the cyclone separator is connected to a dust collection cylinder.

[0011] As a further technical solution of the present invention: a UPS controller and a power control box are further arranged on the movable trolley.

[0012] As a further technical solution of the present invention: a sand leakage plate valve is installed on the first pipeline.

[0013] As a further technical solution of the present invention: a sand adding plate valve is installed on the return air pipe, and a cut-off valve is installed on the air pipe.

[0014] As a further technical solution of the present invention: a storage battery for supplying power to the sand pumping device and the sand adding device is further installed on the movable trolley.

[0015] As a further technical solution of the present invention: the sending cylinder is communicated with a pulse air source for conveying the sand in the sending cylinder to the sand box of the EMU through a connecting assembly.

[0016] Advantages of the present invention:

[0017] In the present invention, the sand adding device and the sand pumping device are arranged on the movable trolley, and the sand pumping device and the sand adding device can be moved by driving the trolley, so the movement is convenient; the sand adding device and the sand pumping device are integrally arranged, the conversion is convenient, the operation is easy, and one person can complete the operations of sand adding and sand pumping, and the efficiency is increased by nearly 60%.

[0018] In the present invention, before sand adding, the sand is filtered by a filter screen and a vibrator in the sand adding device, which greatly reduces the occurrence of faults such as blockage of the sand box of the EMU caused by large particles or dust caking.

[0019] In the present invention, a connecting assembly is provided to realize the connection between the sand inlet pipe and the train sand box. After the expansion airbag expands, it is clamped with the outer wall of the sand box sand injection port to achieve perfect sealing. The plurality of small holes on the internal guiding portion enable the air entering with the sand in the sand inlet pipe to be partially released through the small holes, improving the rate of return air. Description of the drawings

[0020] Figure 1 Stereogram of the main mechanism of the present invention;

[0021] Figure 2 Schematic diagram of the main connection structure of the present invention;

[0022] Figure 3 Schematic diagram of the main structure of the connection component (without the expansion airbag installed);

[0023] Figure 4 Schematic diagram of the main structure of the connection component (with the expansion airbag installed).

[0024] In the figure: 1 - movable trolley, 2 - sand adding device, 201 - sand storage box, 202 - filter screen, 203 - vibrator, 204 - sand leakage box, 205 - pipeline 1, 206 - sending cylinder, 207 - sand leakage plate valve, 3 - sand pumping device, 301 - sand pumping pipe, 302 - negative pressure generator, 303 - air duct, 304 - high-pressure air source, 305 - connecting pipe, 306 - sand pumping plate valve, 307 - cut-off valve, 4 - connection component, 401 - cover plate, 402 - retaining ring, 403 - air return port, 404 - sand inlet, 405 - external guiding part, 406 - sand inlet pipe, 407 - air return pipe, 408 - internal guiding part, 409 - small hole, 410 - installation groove, 411 - expansion airbag, 412 - expansion airbag air pipe, 413 - hole, 414 - sand adding plate valve, 5 - dust removal component, 501 - dust removal pipe, 502 - cyclone separator, 503 - dust removal cloth bag, 504 - dust collection cylinder, 6 - EMU sand box, 7 - controller, 8 - power control box, 9 - storage battery, 10 - pulse air source. Specific implementation mode

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] Refer to Figures 1-4 , a sand adding and sand pumping device for an EMU, including a sand adding device 2 and a sand pumping device 3 arranged on a movable trolley 1. The movable trolley 1 is an electric steerable trolley and is obtained by direct purchase. A bracket is installed on the movable trolley 1 to facilitate the installation of the sand adding device 2 and the sand pumping device 3. A storage battery 9 for supplying power to the sand pumping device 3 and the sand adding device 2 is also installed on the movable trolley 1. A controller 7 and a power control box 8 are also arranged on the movable trolley 1. A sand pumping button and a sand adding button are arranged on the power control box 8.

[0027] The sand adding device 2 includes a sand storage box 201. A filter screen 202 is arranged on the upper part of the sand storage box 201. A vibrator 203 is arranged on the filter screen 202. The lower end of the sand storage box 201 communicates with a sand leakage box 204. The lower end of the sand leakage box 204 communicates with a sending cylinder 206 through a pipeline 1 205. A sand leakage plate valve 207 is installed on the pipeline 1 205. The sending cylinder 206 communicates with a pulse air source 10 for conveying the sand in the sending cylinder 206 into the sand box 6 of the EMU through a connecting component 4.

[0028] The special sand for trains is filtered again before entering the sand box 6 of the EMU. The sand is poured onto the filter screen 202. The qualified sand vibrated by the vibrator 203 falls into the sand storage box 201 through the filter screen 202, and then falls into the sand leakage box 204 through the sand storage box 201. The sand leakage plate valve 207 is opened, and the sand falls into the sending cylinder 206 and is conveyed into the sand box 6 of the EMU through the connecting component 4 under the action of the pulse air source 10.

[0029] The sending cylinder 206 is connected to the sand box 6 of the EMU through a connecting component 4. The connecting component 4 includes a connector body. The connector body includes a circular cover plate 401 and a retaining ring 402 fixedly arranged on one side surface of the cover plate 401. An air return port 403 and a sand inlet 404 are formed on the cover plate 401. An installation groove 410 is formed between the retaining ring 402 and the cover plate 401. An expansion air bag 411 is fixedly installed on the inner circumference of the installation groove 410. The expansion air bag 411 communicates with an expansion air bag air pipe 412. A hole 413 for the expansion air bag air pipe 412 to pass through is formed on the retaining ring 402. The inner diameter of the expansion air bag 411 is adapted to the inner diameter of the sand inlet of the sand box 6 of the EMU to prevent the expansion air bag 5 from slipping out of the connector body 1 after expansion. And the installation groove 410 limits the expansion direction of the expansion air bag 411, so that the expansion air bag 411 only expands towards the outer wall of the sand inlet of the sand box 6 of the EMU to provide a greater clamping force. The expansion air bag 411 is inflated inward by connecting an air bag air source through the expansion air bag air pipe 412, and the sand inlet of the sand box 6 of the EMU can be clamped, and the sand inlet pipe 406 is hermetically connected to the sand box 6 of the EMU.

[0030] External guiding parts 405 extend outwards on one side of the air return port 403 and the sand inlet 404 far away from the retaining ring 402. The external guiding part 405 of the sand inlet 404 is connected to a sand inlet pipe 406. The other end of the sand inlet pipe 406 is connected to the sending cylinder 206. The external guiding part 405 of the air return port 403 is connected to an air return pipe 407. The other end of the air return pipe 407 is connected to a dust removal component 5. An internal guiding part 408 extends inwards on one side of the sand inlet 404 close to the retaining ring 402. A plurality of small holes 409 are formed on the internal guiding part 408.

[0031] Sand and air enter the sand box 6 of the EMU together through the external guiding part 405 of the sand inlet pipe 406, the sand inlet 404, and the internal guiding part 408 of the sand inlet pipe 406. Part of the gas is released from the small holes 409 and discharged through the air return port 403 and the air return pipe 407. Part of the gas enters the sand box 6 of the EMU with the sand and is then discharged through the air return port 403 and the air return pipe 407 backward.

[0032] A sand adding plate valve 414 is installed on the air return pipe 407. The dust removal assembly 5 includes a dust removal pipe 501 connected to the air return pipe 407. One end of the dust removal pipe 501 is communicated with a cyclone separator 502. The upper end of the cyclone separator 502 is connected to a dust removal cloth bag 503, and the lower end of the cyclone separator 502 is connected to a dust collection cylinder 504. When the sand adding plate valve 414 is in the open state, the gas in the air return pipe 407 enters the cyclone separator 502 through the dust removal pipe 501. Solid particles enter the dust collection cylinder 504, and the gas enters the dust removal cloth bag 503 for dust removal and then is discharged.

[0033] The sand pumping device 3 includes a sand pumping pipe 301 for pumping the sand in the sand box 6 of the EMU. The sand pumping pipe 301 is communicated with a negative pressure generator 302. One end of the negative pressure generator 302 is connected to a high-pressure air source 304 through an air pipe 303, and the other end of the negative pressure generator 302 is connected to the dust removal assembly 5 through a connecting pipe 305. A sand pumping plate valve 306 is installed on the connecting pipe 305. A cut-off valve 307 is installed on the air pipe 303. When pumping sand, the sand adding plate valve 414 is closed, the sand pumping plate valve 306 and the cut-off valve 307 are opened. The sand in the sand box 6 of the EMU enters the cyclone separator 502 through the sand pumping pipe 301 and the dust removal pipe 501. Solid particles enter the dust collection cylinder 504, and the gas enters the dust removal cloth bag 503 for dust removal and then is discharged.

[0034] The specific implementation mode of the present invention:

[0035] When adding sand, open the lid of the sand box 6 of the EMU, align the connector body with the inlet of the sand box 6 of the EMU. At this time, the inner ring of the expansion air bag 411 is located at the sand inlet of the sand box 6 of the EMU. Connect the air source of the air bag to the expansion air bag 411 through the expansion air bag air pipe 412. The expansion air bag 411 expands inward, and thus the sand inlet of the sand box 6 can be clamped to realize the connection with the sand adding device.

[0036] The sand pumping plate valve 306 is closed, and the sand adding plate valve 414 is opened. Sand is poured onto the filter screen 202. The sand vibrated by the vibrator 203 passes through the filter screen 202 and falls into the sand storage box 201. Then, it falls into the sand leakage box 204 through the sand storage box 201. The sand leakage plate valve 207 is opened, and the sand falls into the sending cylinder 206. Under the action of the pulse wind source 10, the sand and air are transported together through the sand inlet pipe 406, the external guide part 405 of the sand inlet port 404, and the sand inlet port 406. The internal guide part 408 of the tube 406 enters the EMU sand box 6, part of the gas is released from the small hole 409 and then discharged from the return air port 403 and the return air pipe 407, part of the gas enters the EMU sand box 6 with the sand and is discharged backward through the return air port 403 and the return air pipe 407, the gas in the return air pipe 407 enters the cyclone separator 502 through the dust removal pipe 501, the solid particles enter the dust collecting barrel 504, and the gas enters the dust removal bag 503 for dust removal before being discharged.

[0037] When large particles and dust agglomerates block the EMU sand box 6 and sand extraction is required, the sand adding plate valve 414 is closed, the sand extraction plate valve 306 and the shut-off valve 307 are opened, and the sand in the EMU sand box 6 enters the cyclone separator 502 through the sand extraction pipe 301 and the dust removal pipe 501, the solid particles enter the dust collecting cylinder 504, and the gas enters the dust removal bag 503 for dust removal and then is discharged. The EMU sand box 6 can be cleaned to eliminate the fault.

[0038] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A sand adding and sand pumping device for multiple unit trains, characterized in that: It includes a sand adding device (2) and a sand pumping device (3) arranged on a movable trolley (1). The sand adding device (2) includes a sand storage box (201). A filter screen (202) is arranged on the upper part of the sand storage box (201). A vibrator (203) is arranged on the filter screen (202). The lower end of the sand storage box (201) communicates with a sand leakage box (204). The lower end of the sand leakage box (204) communicates with a sending cylinder (206) through a pipeline one (205). The sending cylinder (206) is connected to a sand box of a bullet train (6) through a connecting component (4). The sand pumping device (3) includes a sand pumping pipe (301) for pumping out the sand in the sand box of the bullet train (6). The sand pumping pipe (301) communicates with a negative pressure generator (302). One end of the negative pressure generator (302) is connected to a high-pressure air source (304) through an air pipe (303). The other end of the negative pressure generator (302) is connected to a dust removal component (5) through a connecting pipe (305). A sand pumping plate valve (306) is installed on the connecting pipe (305). The connecting component (4) includes a connector body. The connector body includes a circular cover plate (401) and a retaining ring (402) fixedly arranged on one side surface of the cover plate (401). An air return port (403) and a sand inlet (404) are opened on the cover plate (401). External guiding parts (405) extend outwards on the sides of the air return port (403) and the sand inlet (404) far away from the retaining ring (402). The external guiding part (405) of the sand inlet (404) is connected to a sand inlet pipe (406). The other end of the sand inlet pipe (406) is connected to the sending cylinder (206). The external guiding part (405) of the air return port (403) is connected to an air return pipe (407). The other end of the air return pipe (407) is connected to the dust removal component (5). An internal guiding part (408) extends inwards on the side of the sand inlet (404) close to the retaining ring (402). A plurality of small holes (409) are opened on the internal guiding part (408).

2. The sand adding and sand pumping device for multiple unit trains according to claim 1, wherein: An installation groove (410) is formed between the retaining ring (402) and the cover plate (401). An expansion air bag (411) is fixedly installed on the inner circumference of the installation groove (410). An expansion air bag air pipe (412) communicated with the expansion air bag (411) is arranged on the outer side of the expansion air bag (411). A hole (413) for the expansion air bag air pipe (412) to pass through is opened on the retaining ring (402).

3. The sand adding and sand pumping device for EMU according to claim 2, characterized in that: The dust removal component (5) includes a dust removal pipe (501) connected to the air return pipe (407). One end of the dust removal pipe (501) communicates with a cyclone separator (502). The upper end of the cyclone separator (502) is connected to a dust removal cloth bag (503). The lower end of the cyclone separator (502) is connected to a dust collection cylinder (504).

4. A sand adding and sand pumping device for multiple unit trains according to claim 3, characterized in that: A controller (7) and a power control box (8) are also arranged on the movable trolley (1).

5. The sand adding and sand pumping device for EMUs according to claim 4, wherein: A sand leakage plate valve (207) is installed on the pipeline one (205).

6. The sand adding and sand pumping device for multiple unit trains according to claim 5, characterized in that: A sand adding plate valve (414) is installed on the air return pipe (407), and a cut-off valve (307) is installed on the air pipe (303).

7. A sand adding and sand pumping device for multiple unit trains according to claim 1, characterized in that: A storage battery (9) for supplying power to the sand pumping device (3) and the sand adding device (2) is also installed on the movable trolley (1).

8. A sand adding and sand pumping device for multiple unit trains according to claim 1, characterized in that: The sending cylinder (206) is connected to a pulse air source (10) for conveying the sand in the sending cylinder (206) into the sand box (6) of the EMU through a connecting assembly (4).

Images