CN110341729B - Differential pressure type sand spreader with adjustable throttling exhaust head - Google Patents
Differential pressure type sand spreader with adjustable throttling exhaust head Download PDFInfo
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- CN110341729B CN110341729B CN201910664788.9A CN201910664788A CN110341729B CN 110341729 B CN110341729 B CN 110341729B CN 201910664788 A CN201910664788 A CN 201910664788A CN 110341729 B CN110341729 B CN 110341729B
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- head
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- differential pressure
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- sand
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C15/00—Maintaining or augmenting the starting or braking power by auxiliary devices and measures; Preventing wheel slippage; Controlling distribution of tractive effort between driving wheels
- B61C15/08—Preventing wheel slippage
- B61C15/10—Preventing wheel slippage by depositing sand or like friction increasing materials
- B61C15/102—Preventing wheel slippage by depositing sand or like friction increasing materials with sanding equipment of mechanical or fluid type, e.g. by means of steam
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Abstract
The invention belongs to the field of rail transit vehicle devices, and particularly relates to a differential pressure type sand sprayer with an adjustable throttling exhaust head. The adjusting device comprises an adjusting head and an adjusting seat, wherein a semi-closed type vent hole is formed in the inner ring of the lower end of the adjusting head, a semi-closed type vent hole matched with the vent hole of the adjusting head is formed in the inner ring of the upper end of the adjusting seat, and the adjusting head is movably connected with the adjusting seat. The adjustable throttling exhaust head has the advantages that the structure is simple and ingenious, the size of the vent hole of the adjustable throttling exhaust head can be changed by adjusting the rotating position of the adjusting head, and further the airflow flow in the adjustable throttling exhaust head is changed, so that the sand scattering amount of the sand spreader is adjusted, the operation is simple, the use is convenient, and the performance of the differential pressure type sand spreader is improved.
Description
Technical Field
The invention relates to the field of rail transit vehicle devices, in particular to a differential pressure type sand sprayer with an adjustable throttling exhaust head.
Background
The influence of rain, snow, frost and the like causes the problem of wheel sliding during the operation of the ground rail transit vehicle, the sliding brings great harm to the operation of the vehicle, light people scratch the wheels, and heavy people prolong the braking distance, thus causing safety accidents. In order to ensure the safe operation of the vehicle, the sanding device can effectively improve the adhesive force between the wheels and the track and reduce the sliding risk of the vehicle.
The prior sand spreader is divided into a gravity sand spreader and a differential pressure type sand spreader, the gravity sand spreader is used for the early locomotive, sand grains in a sand box are spread to the wheel rail space through a sand spreading pipe by the self gravity, and the sand spreader has simple structure but uneven sand spreading amount and is difficult to control. The differential pressure type sand spreader is widely applied to various rail vehicles at present, the sand spreader is superior to a gravity type sand spreader in whole, the sand spreading amount is uniform, and the control is convenient.
Most sanding devices are shown like chinese patent No. CN201530382U at present, and this utility model provides a differential pressure formula sander, and the air current that lets in sanding device divides into two strands in the sand box and discharges from the sander, and one of them air current flows out from the sanding cap and can take away the grit together, and another air current flows out from the exhaust head and can not take away the grit, and final two air currents are converged and are together flowed out the sander. The sand spreader can smoothly spread sand out in cold and humid weather, but the sand spreading amount can be adjusted by replacing the corresponding throttle plug after the vehicle bottom plate screw is detached from the bottom of the sand spreader, the throttle plug cannot be replaced when no environment such as a trench or a car rack exists, and the sand spreaders installed on the existing motor train unit are protected by the vehicle bottom plate, so that the problem of time and labor waste caused by the fact that the vehicle bottom plate needs to be detached firstly during adjustment exists.
Disclosure of Invention
The invention provides a differential pressure type sander with an adjustable throttling exhaust head, which solves the problems that a vehicle bottom plate needs to be detached during adjustment and the sanding device can be adjusted in a specific environment, and enables the sanding amount to be adjusted more simply and conveniently.
The technical scheme of the invention is as follows: the adjustable throttling exhaust head comprises an adjusting head and an adjusting seat, wherein a semi-closed vent hole is formed in the inner ring of the lower end of the adjusting head, a semi-closed vent hole matched with the vent hole of the adjusting head is formed in the inner ring of the upper end of the adjusting seat, and the adjusting head is movably connected with the adjusting seat.
Preferably, the upper end of the adjusting head is a hemispherical shell, the middle of the adjusting head is a hollow cylinder, the lower end of the adjusting head is a hollow circular ring with the diameter smaller than that of the middle of the adjusting head, the lower end of the hollow circular ring is a circular seat with the diameter larger than that of the hollow circular ring, the upper end of the adjusting seat is a circular sleeve, and the lower end of the adjusting seat is a hollow cylinder.
Preferably, the outer side of the hollow circular ring is provided with a limiting boss, the outer side of the circular sleeve is provided with a bolt hole, the upper end of the circular sleeve is provided with a pressing plate, the pressing plate is composed of two semicircular rings, bolt holes are respectively formed in the two ends of each semicircular ring, the limiting boss is arranged on the inner side of one end of each semicircular ring, and the pressing plate is connected with the circular sleeve through a fastening piece.
Preferably, an elastic pad is pressed between the pressure plate and the circular seat.
Preferably, the outer ring of the bottom surface of the circular base is provided with an anti-rotation boss, and the outer ring of the upper end surface of the circular sleeve is provided with an anti-rotation groove matched with the anti-rotation boss.
Preferably, the upper end of the adjusting head is provided with an air inlet, the lower end of the adjusting seat is provided with a fixing ring, and the fixing ring is a hollow circular truncated cone.
A differential pressure type sander with an adjustable throttling exhaust head comprises a gas circuit board, a sand separation board, a sanding pipe, a sanding cap, an exhaust pipe and the adjustable throttling exhaust head. The structure of the air path in the air path board is known by those skilled in the art and is not described in detail herein, a sand separation board is arranged above the air path board, a heating rod is arranged between the upper end of the air path board and the sand separation board, the lower end of the adjustable throttle exhaust head is connected with an exhaust pipe, and the lower end of the exhaust pipe is fixedly connected to the air path board and is communicated with a sand outlet at the lower end of the air path board. The sanding pipe is fixedly connected to the gas circuit board, a sanding cap is arranged at the upper end of the sanding pipe, and the lower end of the sanding pipe is communicated with the sanding outlet.
Preferably, an exhaust hose is sleeved between the lower end of the adjustable throttle exhaust head and the exhaust pipe.
Compared with the prior art, the invention has the advantages and positive effects that:
the adjustable throttling exhaust head is arranged on the differential pressure type sand spreader and comprises an adjusting head and an adjusting seat, wherein the inner ring of the bottom surface of the adjusting head is provided with a semi-closed vent hole, the inner ring of the upper end of the adjusting seat is provided with a matched semi-closed vent hole, the vent hole vent area can be changed by rotating the adjusting head from the upper part of the sand spreader, so that the sand spreading amount can be adjusted, the adjustment can be performed under the working environment without a trench or a vehicle-mounted platform, and the like, the operation is simple, and the adjustment is convenient.
The bottom surface outer lane of adjusting the head is equipped with prevents changeing the boss, the upper end outer lane of adjusting the seat be equipped with prevent changeing the boss matched with and prevent changeing the recess, the cushion has been pressed between clamp plate and the first lower extreme of regulation, will adjust first axial fixity on adjusting the seat through clamp plate and cushion, prevent changeing the boss and fall into and prevent changeing in the recess under the effect of cushion, the restriction is adjusted the head and is adjusted the seat and do not take place relative rotation, when exerting external force and rotate and adjust the head, external force overcomes the packing force of cushion and makes to prevent changeing the boss and prevent changeing the recess separately, realize adjusting the head and rotate, thereby change the air vent size, the sand volume is spilt.
The sand spraying device is characterized in that a limiting boss is arranged at one end of the pressing plate and on the outer wall of the hollow circular ring, the limiting bosses of the two parts are matched with each other, when the adjusting head is rotated to two limiting positions limited by the limiting bosses, the vent holes of the adjusting head are fully opened or fully closed, and the sand spraying amount can be accurately adjusted according to the actual conditions of the bullet train.
The lower end of the adjusting seat is provided with a fixing ring which is a hollow round table, resistance in the process of sleeving can be reduced, and sleeving and looseness prevention are facilitated.
Adopt the differential pressure type sander of adjustable throttle aiutage, cup joint the exhaust hose through the clamp between adjustable throttle aiutage and exhaust pipe for adjust the head and have certain degree of freedom in the sand box, can be more convenient adjust the first air vent size from annotating the sand mouth adjustment, satisfy the requirement of the volume of spilling sand.
Drawings
FIG. 1 is a block diagram of an adjustable flow exhaust head according to the present invention.
FIG. 2 is a block diagram of an adjustable flow exhaust head according to the present invention.
FIG. 3 is an exploded view of the adjustable flow exhaust head of the present invention.
Fig. 4 is a structural view of a sander of the present invention.
Fig. 5 is a schematic view of the sander of the present invention.
As shown in fig. 1, 101, an adjustment head; 102. an adjusting seat; 103. pressing a plate; 104. an elastic pad; 106. an air inlet; 107. semi-enclosed vents.
106, air intake, as shown in fig. 2; 107. a semi-enclosed vent; 108. an anti-rotation boss; 109. an anti-rotation groove.
As shown in fig. 3, 105, fasteners; 110. and a limiting boss.
As shown in fig. 4, 1, a gas circuit board; 2. a sand-separating plate; 3. a sanding pipe; 4. a sanding cap; 5. an exhaust pipe; 6. an exhaust hose; 7. an adjustable flow exhaust head.
As shown in fig. 5, 8, a sand injection port; 9. a vehicle floor.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
Example one
An adjustable flow exhaust head comprises an adjusting head 101 and an adjusting seat 102. The inner ring of the lower end of the adjusting head 101 is provided with a semi-closed vent hole 107, the inner ring of the upper end of the adjusting seat 102 is provided with a semi-closed vent hole 107 matched with the vent hole of the adjusting head 101, and the adjusting head 101 is movably connected with the adjusting seat 102.
Adjust head 101 upper end and be the hemisphere casing, it is hollow cylinder to adjust head 101 middle part, it is less than for the diameter to adjust head 101 lower extreme adjust the hollow ring at head 101 middle part, hollow ring lower extreme is greater than for the diameter the circular seat of hollow ring, adjust seat 102 upper end and be circular cover, it is hollow cylinder to adjust seat 102 lower extreme.
The hollow circular ring outside is equipped with spacing boss 110, the circular cover outside is equipped with the bolt hole, and circular cover upper end is equipped with clamp plate 103, clamp plate 103 comprises two semicircle rings the semicircle ring both ends respectively are equipped with the bolt hole, two semicircle ring wherein one end inboard is equipped with spacing boss 110, clamp plate 103 with circular cover passes through fastener 105 and connects.
An elastic pad 104 is pressed between the pressing plate 103 and the circular seat.
The outer ring of the bottom surface of the circular base is provided with an anti-rotation boss 108, and the outer ring of the upper end surface of the circular sleeve is provided with an anti-rotation groove 109 matched with the anti-rotation boss 108.
The upper end of the adjusting head 101 is provided with an air inlet 106, the lower end of the adjusting seat 102 is provided with a fixing ring, and the fixing ring is a hollow round table.
The principle of the adjustable throttle exhaust head 7 is as follows: the adjustable flow exhaust head 7 is composed of an adjusting head 101, an adjusting seat 102, a pressure plate 103, an elastic pad 104, a fastener 105 and the like. The adjusting head 101 is pressed on the adjusting seat 102 through the pressing plate 103 and the elastic pad 104, and the adjusting head 101 and the adjusting seat 102 can rotate relatively. Air in the flask enters the assembly through the air inlet holes 106 of the adjustment head 101, passes through the semi-enclosed vent holes 107 of the adjustment head 101 and the adjustment base 102, and is discharged through the air outlet holes of the adjustment base 102. When the two parts rotate relatively, the relative areas of the two semi-closed vent holes 107 change, and the sanding amount of the sander can be adjusted by adjusting the flow ratio of the air flow A and the air flow B. The outer sides of the hollow circular rings of the pressure plate 103 and the adjusting head 101 are provided with limiting bosses 110 for limiting the rotating position, the adjusting head 101 can only rotate 180 degrees when being manually rotated, and when the adjusting head 101 is rotated, the relative angle between the adjusting head 101 and the adjusting seat 102 changes from 0 degree to 180 degrees, and the size of the semi-closed vent 107 changes from full opening to full closing.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
the adjustable throttling exhaust head 7 is arranged on the differential pressure type sand sprayer, the adjustable throttling exhaust head 7 comprises an adjusting head 101 and an adjusting seat 102, a semi-closed type vent hole 107 is arranged on the inner ring of the bottom surface of the adjusting head 101, a matched semi-closed type vent hole 107 is arranged on the inner ring of the upper end of the adjusting seat 102, the ventilation area of the semi-closed type vent hole 107 can be changed from the upper part of the sand sprayer by rotating the adjusting head 101, so that the sand spraying amount can be adjusted, the adjustment can be carried out under the working environment without a trench or a trolley frame and the like, the operation is simple, and the adjustment is convenient.
The utility model discloses a sand spraying device, including adjusting head 101, pressure pad 103, adjusting seat 102, pressure pad 104, adjusting head 101, adjusting head's 107, the size of semi-enclosed air vent 107, the sand amount that spills of accurate control.
Wherein one end of clamp plate 103 and hollow ring outer wall are equipped with spacing boss 110, and the spacing boss 110 of two parts is mutually supported, and when adjusting head 101 to two extreme positions of spacing boss 110 restriction through rotating, the air vent of adjusting head 101 is for two kinds of situations of full open or full cut-off, can be according to the motor car actual conditions, and the sand volume is spilt in the accurate adjustment.
The lower end of the adjusting seat 102 is provided with a fixing ring which is a hollow circular truncated cone, and the design can reduce the resistance during sleeving and is convenient for sleeving and looseness prevention.
Example two
The utility model provides an adopt differential sand spreader of adjustable throttle air discharge head, sand spreader mainly comprises gas circuit board 1, sand separating plate 2, sanding pipe 3, sanding cap 4, blast pipe 5, exhaust hose 6, adjustable throttle air discharge head 7. The structure of the air path in the air path plate 1 is known by those skilled in the art, and is not described in detail herein, and the sand sprinkling pipe 3 and the exhaust pipe 5 are installed on the air path plate 1 and connected with an air path arranged in the air path plate 1; a sand separation plate 2 is arranged above the air channel plate 1, a heating rod is arranged between the upper end of the air channel plate 1 and the sand separation plate 2, and the sand separation plate 2 separates a sand blowing cavity of the air channel plate 1 from sand in the sand box, so that the sand cannot fall into the sand blowing cavity of the air channel plate 1 on the premise that compressed air can pass through; the sanding cap 4 is buckled on the sanding pipe 3 to ensure that sand in the sand box cannot flow out of the sanding pipe 3 when compressed air is not introduced; the exhaust hose 6 is arranged on the exhaust pipe 5 through a hoop, the adjustable throttling exhaust head 7 is arranged above the exhaust hose 6 through the hoop, and the adjustable throttling exhaust head 7 has certain degree of freedom in the sand box due to the flexibility of the exhaust hose 6; the adjustable throttle exhaust head 7 has the function of adjusting the ventilation volume, when the adjusting head 101 at the upper part of the adjustable throttle exhaust head 7 is rotated, the size of the semi-closed type vent hole 107 of the adjustable throttle exhaust head 7 can be changed, so that the compressed air volume passing through the adjustable throttle exhaust head 7 can be changed within the range from zero to the maximum ventilation volume.
When the sanding operation is executed, compressed air enters the air channel plate 1 through the air supply port, enters the sand blowing cavity at the bottom of the air channel plate 1 through the guide of the air channel and then enters the sand box through the sand separation plate 2. In the flask, the supplied compressed air is divided into two streams: air flow a and air flow B. The airflow A flows in from a gap between the sanding cap 4 and the sanding pipe 3, and brings sand around the sanding cap 4 into the sanding pipe 3; the air flow B enters the exhaust pipe 5 through the adjustable throttle exhaust head 7, and is pure air because no sand is around the adjustable throttle exhaust head 7. The air flow a and the mixed sand flow into the air channel plate 1 from the sand spreading pipe 3, and are fully mixed with the air flow B flowing out from the exhaust pipe 5, and then the air flow B is ejected out of the sand outlet.
The design of the sand spreader adjusts the proportion of the air flow A and the air flow B by adjusting the size of the ventilation aperture of the adjustable throttle exhaust head 7, thereby changing the sand spreading amount of the sand spreader. Because the adjustable throttle exhaust head 7 is arranged on the exhaust hose 6 through the hoop, a certain degree of freedom is provided in the sand box, the size of the air vent of the adjustable throttle exhaust head 7 can be conveniently adjusted from the sand injection port 8, and the adjustment can be completed without dismantling the vehicle bottom plate 9.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (7)
1. A differential pressure type sand sprayer with an adjustable throttling exhaust head, which is characterized in that,
comprises an adjustable throttling exhaust head, a gas circuit board, an exhaust pipe and a sanding pipe;
the sanding pipe and the exhaust pipe are arranged on the gas circuit board and are connected with an air pipeline in the gas circuit board, and the adjustable throttle exhaust head is connected above the exhaust pipe;
the adjustable throttling exhaust head comprises an adjusting head and an adjusting seat, wherein a semi-closed vent hole is formed in the inner ring of the lower end of the adjusting head, a semi-closed vent hole matched with the vent hole of the adjusting head is formed in the inner ring of the upper end of the adjusting seat, and the adjusting head is movably connected with the adjusting seat.
2. The differential pressure sander of an adjustable throttle exhaust head as set forth in claim 1,
the upper end of the adjusting head is a hemispherical shell, the middle part of the adjusting head is a hollow cylinder, the lower end of the adjusting head is a hollow circular ring with the diameter smaller than that of the middle part of the adjusting head, the lower end of the hollow circular ring is a circular seat with the diameter larger than that of the hollow circular ring,
the upper end of the adjusting seat is a circular sleeve, and the lower end of the adjusting seat is a hollow cylinder.
3. The differential pressure sander of an adjustable throttle exhaust head as set forth in claim 2,
the outer side of the hollow circular ring is provided with a limit boss,
the circular cover outside is equipped with the bolt hole, and circular cover upper end is equipped with the clamp plate, the clamp plate comprises two semicircle rings the semicircle ring both ends respectively are equipped with the bolt hole, two semicircle ring wherein one end inboard is equipped with spacing boss, the clamp plate with circular cover passes through the fastener and connects.
4. The differential pressure sander of an adjustable throttle exhaust head of claim 3,
an elastic pad is pressed between the pressing plate and the circular seat.
5. The differential pressure sander of an adjustable throttle exhaust head as set forth in claim 2,
the outer ring of the bottom surface of the round seat is provided with an anti-rotation boss, and the outer ring of the upper end surface of the round sleeve is provided with an anti-rotation groove matched with the anti-rotation boss.
6. The differential pressure sander of an adjustable throttle exhaust head as set forth in claim 1,
the adjustable air inlet is formed in the upper end of the adjusting head, the fixing ring is arranged at the lower end of the adjusting seat, and the fixing ring is a hollow round table.
7. The differential pressure sander of an adjustable throttle exhaust head as set forth in any one of claims 1 to 6,
the lower end of the adjustable throttle exhaust head is sleeved with an exhaust hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910664788.9A CN110341729B (en) | 2019-07-23 | 2019-07-23 | Differential pressure type sand spreader with adjustable throttling exhaust head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910664788.9A CN110341729B (en) | 2019-07-23 | 2019-07-23 | Differential pressure type sand spreader with adjustable throttling exhaust head |
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| Publication Number | Publication Date |
|---|---|
| CN110341729A CN110341729A (en) | 2019-10-18 |
| CN110341729B true CN110341729B (en) | 2021-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910664788.9A Active CN110341729B (en) | 2019-07-23 | 2019-07-23 | Differential pressure type sand spreader with adjustable throttling exhaust head |
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| Country | Link |
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| CN (1) | CN110341729B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2050116U (en) * | 1989-03-20 | 1989-12-27 | 张纪民 | Gas-flow rotary regulator |
| CN203567723U (en) * | 2013-11-20 | 2014-04-30 | 宁波国创机车装备有限公司 | Sanding device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2801969B1 (en) * | 1999-12-01 | 2002-02-08 | Siemens Automotive Sa | NON-CONTACT ANGLE SHIFT ANALOG SENSOR |
| DE10300510A1 (en) * | 2003-01-09 | 2004-07-22 | Manner Sensortelemetrie Gmbh | Assembly for contactless measurement of sensor signals originating from rotating shafts, comprises a rotor and stator arrangement that act as a transformer unit for transfer of energy and measurement signals in a contactless way |
| CN104118438A (en) * | 2014-08-11 | 2014-10-29 | 南车株洲电力机车有限公司 | Sanding system for railway vehicle and sander thereof |
| CN207274672U (en) * | 2017-09-28 | 2018-04-27 | 宁波国创机车装备有限公司 | A kind of integral type sand sprayer agent structure and the sand sprayer with the structure |
-
2019
- 2019-07-23 CN CN201910664788.9A patent/CN110341729B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2050116U (en) * | 1989-03-20 | 1989-12-27 | 张纪民 | Gas-flow rotary regulator |
| CN203567723U (en) * | 2013-11-20 | 2014-04-30 | 宁波国创机车装备有限公司 | Sanding device |
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| Publication number | Publication date |
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| CN110341729A (en) | 2019-10-18 |
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