Constant-flow high-speed sanding device

Abstract

The utility model provides a constant-flow high-speed sanding device. The constant-flow high-speed sanding device comprises an upper plate assembly, a gravel conveying assembly, a box body assembly and a lower plate assembly, tail gas exhausted by the pneumatic motor in the box body serves as power, gravel is sprayed to a designated position at a high speed, the gravel can be conveyed accurately and constantly and sprayed to the designated position through high-pressure gas, the pneumatic motor provides power for the device, the use requirements for the environment such as the environment temperature and gravel hardening are greatly lowered, and the service life of the device is prolonged. And meanwhile, the sand production amount can be accurately controlled by adjusting the pressure of the air source and changing the inner diameter of the adjusting nut. The device is driven by a single pneumatic motor, so that multiple purposes are achieved, the structural compactness is improved, the arrangement space is reduced, the cost is saved, the operation process can be simplified, and the use flexibility is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit sand spreading, in particular to a constant flow high-speed sand spreading device. Background Art

[0002] In the field of rail transit technology, when the train is in low temperature icing, braking, climbing and other use environments, in order to prevent the wheels from idling or locking due to insufficient adhesion coefficient during traction or braking, a sand spreading device is used to increase the adhesion coefficient between the wheels and the track. Traditionally, the sand spreading device on the train mostly uses gravity and differential pressure to spread sand, and the defects include: unstable sand output and high requirements for the use environment.

[0003] The prior art also discloses pneumatic sand-spreading equipment for rail vehicles, including a connecting shell, a sand storage bin is rotatably connected to the lower end of the connecting shell, a motor is fixedly connected to one end of the lower side of the connecting shell, a bevel gear assembly is connected to the output end of the motor, a cylinder assembly is provided at the upper end of the connecting shell, a connecting block is connected to the bottom of the cylinder assembly, a rotating frame is rotatably connected to the bottom of the connecting block, a bottom ring is fixedly connected to the bottom of the rotating frame, a jet ring is fixedly connected to the side of the bottom ring, and the connecting shell is fixedly connected to a conveying shell with a built-in auger column. The scheme sets a cylinder assembly and a three-way valve in the device. When sand is needed, the cylinder assembly is started. The cylinder assembly drives the rotating frame and the bottom ring at the bottom to reciprocate in the vertical direction through the connecting block, and the motor and air compressor are started. Under the action of the gear ring assembly, the sand at the inner end of the rotating sand storage bin is scattered into the conveying shell through the slot and the connecting groove. The rotating auger column in the conveying shell transports the sand toward the sand spreading pipe. Finally, the sand falls into the sand spreading pipe when it leaves the conveying shell, thereby avoiding blockage during the sand conveying process. After the sand is spread, the three-way valve is reversed. At this time, the compressed air generated by the air compressor is injected into the jet ring through the three-way valve, the conduit, and the ventilation groove. The jet ring sprays compressed air to blow the sand storage bin and the bottom ring, promoting the sand attached to the surface to fall off, and reducing the subsequent processing steps. There are many components in this scheme, which makes the overall structure larger. The jet block and the conveying shell are completely independently set. Therefore, the sand spreading device can be further optimized. Utility Model Content

[0004] The purpose of the utility model is to provide a solution that can accurately and constantly convey gravel and scatter the accurately conveyed gravel to a designated position again through a high-speed airflow, while having a simple structure and compact layout in view of the shortcomings of the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a constant flow high-speed sand spreading device, including an upper plate assembly, a gravel conveying assembly, a box assembly and a lower plate assembly;

[0006] The box assembly comprises a box;

[0007] The upper plate assembly is arranged on the top of the box body, and comprises an upper plate and a first sand falling hole, wherein the upper plate is connected to the box body to seal the interior of the box body, and the first sand falling hole corresponds to the gravel conveying assembly;

[0008] The gravel conveying assembly comprises a conveying pipe, a spiral conveying rod, an auger driving unit and a transmission structure; the conveying pipe is connected to the first sand falling hole, the spiral conveying rod is arranged in the conveying pipe, and the end of the spiral conveying rod is connected to the auger driving unit through the transmission structure; the auger driving unit is a pneumatic motor;

[0009] The lower plate assembly is arranged at the bottom of the box body, and includes a lower plate, a second sand-falling hole, an air guide pipe, and a bent pipe; the lower plate is connected to the box body to seal the interior of the box body, the second sand-falling hole is opened on the lower plate and corresponds to the delivery pipe, the top end of the bent pipe is connected to the delivery pipe, and the two ends of the air guide pipe are respectively connected to the bent pipe and the interior of the box body.

[0010] Furthermore, the upper plate assembly further comprises a first sealing gasket, and the first sealing gasket is arranged at the hole wall of the first sand falling hole.

[0011] Furthermore, the delivery pipe includes a first delivery pipe and a second delivery pipe, the first delivery pipe is horizontally arranged relative to the box body, and the second delivery pipe is connected to the first end of the first delivery pipe and is vertically arranged relative to the box body.

[0012] Furthermore, the gravel conveying assembly further comprises a funnel mouth, the bottom of the funnel mouth is communicated with the first conveying pipe, and the top of the funnel mouth is aligned with the first sand falling hole.

[0013] Furthermore, the transmission structure includes a driving gear and a driven gear, the driving gear is connected to the output end of the pneumatic motor, and the driven gear is connected to the end of the spiral conveying rod and meshes with the driving gear.

[0014] Furthermore, the gravel conveying assembly also includes a first mounting plate and a second mounting plate that are arranged opposite to each other, the first conveying pipe and the pneumatic motor are arranged between the first mounting plate and the second mounting plate, and the two ends of the first conveying pipe and the pneumatic motor are respectively connected to the first mounting plate and the second mounting plate.

[0015] Furthermore, the box assembly also includes a double-threaded straight-through, which is arranged on the side wall of the box and is used to connect the input end of the pneumatic motor with the pipeline of the air source.

[0016] Furthermore, the box assembly also includes a second sealing gasket and a third sealing gasket, the second sealing gasket is arranged between the double-threaded straight-through and the box, and the third sealing gasket is arranged at the top and the bottom of the box.

[0017] Furthermore, the lower plate assembly also includes a joint, which is connected to the bottom end of the elbow, and the joint has a variety of different forms.

[0018] Furthermore, the lower plate assembly also includes an adjusting nut, which is disposed in the box body and connected to the air duct for controlling the size of the air duct inlet.

[0019] The above solution of the utility model has the following beneficial effects:

[0020] The constant flow high-speed sand-spreading device provided by the utility model uses clean air as the power, and the high-pressure gas is directly connected to the pneumatic motor through a double-threaded direct connection. The pneumatic motor transmits power to the spiral conveying rod through a gear-type transmission structure. The spiral conveying rod conveys the gravel that falls from the funnel mouth into the second end of the first conveying pipe to the first end, and then falls into the second conveying pipe, and finally enters the curved pipe. The tail gas discharged by the pneumatic motor in the box is used as the power to spray the gravel at a high speed to the designated position. The gravel can be accurately and constantly transported and sprayed to the designated position through high-pressure gas. Since the device is powered by a pneumatic motor, the environmental requirements for use, such as environmental temperature, gravel compaction, etc., are greatly reduced, and the stability of use is improved. At the same time, the amount of sand output can be accurately controlled by adjusting the air source pressure and changing the inner diameter of the adjusting nut. The device is driven by a single pneumatic motor, realizing "one machine for multiple uses", improving the compactness of the structure, reducing the layout space, saving costs, and simplifying the operation process, further improving the flexibility of use;

[0021] Other beneficial effects of the present invention will be described in detail in the subsequent specific implementation sections. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the upper plate assembly of the utility model;

[0025] Figure 4 It is a schematic diagram of the gravel conveying assembly of the utility model;

[0026] Figure 5 It is a schematic diagram of the threaded conveying rod of the utility model;

[0027] Figure 6 This is a schematic diagram of the box assembly of the utility model;

[0028] Figure 7 It is a schematic diagram of the lower plate assembly of the utility model.

[0029] [Description of Reference Numerals]

[0030] 10-upper plate assembly; 11-upper plate; 12-first sand falling hole; 13-first installation group holes; 14-first sealing pad; 20-gravel conveying assembly; 21-first conveying pipe; 22-second conveying pipe; 23-funnel mouth; 24-threaded conveying rod; 25-driving gear; 26-driven gear; 27-pneumatic motor; 28-first mounting plate; 29-second mounting plate; 30-box assembly; 31-box; 32-double threaded straight-through; 33-second sealing pad; 34-third sealing pad; 35-second installation group holes; 40-lower plate assembly; 41-lower plate; 42-second sand falling hole; 43-fourth sealing pad; 44-adjusting nut; 45-air guide pipe; 46-elbow pipe; 47-connector; 48-third installation group holes. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present application, the present application will be described more comprehensively with reference to the relevant drawings below. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0032] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0033] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] 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.

[0036] like Figure 1 , Figure 2 As shown, an embodiment of the utility model provides a constant flow high-speed sand spreading device, comprising an upper plate assembly 10, a gravel conveying assembly 20, a box assembly 30 and a lower plate assembly 40. The box assembly 30 is a rectangular structure surrounded by four sides as a whole, the upper plate assembly 10 is arranged on the top of the box assembly 30, and the lower plate assembly 40 is arranged at the bottom of the box assembly 30 to enclose a closed space inside the box assembly 30. The gravel conveying assembly 20 is arranged inside the box assembly 30, and is used to convey gravel to be spread out.

[0037] At the same time Figure 3 As shown, the upper plate assembly 10 includes an upper plate 11, a first sand-falling hole 12, a first installation group hole 13 and a first sealing gasket 14. The first sand-falling hole 12 is opened at a preset position of the upper plate 11, and the first sealing gasket 14 is arranged at the hole wall of the first sand-falling hole 12, so that when the device is connected with a sand storage bin, etc., all the sand and gravel can enter the box assembly 30 without flowing out, and the sealing of the box assembly 30 is ensured. The first installation group hole 13 is used to be detachably connected to the box assembly 30 by installing bolts.

[0038] At the same time Figure 4 , Figure 5 As shown, the gravel conveying assembly 20 includes a first conveying pipe 21, a second conveying pipe 22, a funnel 23, a spiral conveying rod 24, an auger drive unit and a transmission structure. Among them, the first conveying pipe 21 is horizontally arranged relative to the box assembly 30. The second conveying pipe 22 is connected to the first end of the first conveying pipe 21 and is vertically arranged relative to the box assembly 30. The funnel 23 is connected to the second end of the first conveying pipe 21, which is also vertically arranged relative to the box assembly 30, and the funnel 23 is aligned with the first sand falling hole 12, so that the gravel in the sand storage bin can be collected from the funnel 23 to the second end of the first conveying pipe 21, and then transported to the first end and enter the second conveying pipe 22 to be scattered out. It can be understood that the upper edge of the funnel 23 is also in contact with the first sealing pad 14 to ensure the sealing of the box assembly 30.

[0039] The spiral conveying rod 24 is arranged in the first conveying pipe 21, and the second end of the spiral conveying rod 24 is connected to the auger driving part through a transmission structure, so that the spiral conveying rod 24 rotates continuously and stably under the drive of the auger driving part, so that the gravel entering the second end of the first conveying pipe 21 from the funnel 23 moves stably to the first end. Through the spiral conveying method, the gravel is guaranteed to be stably scattered out with a constant flow rate.

[0040] As a preferred implementation scheme of this embodiment, the spiral conveying rod 24 adopts a bidirectional spiral blade setting mode, and the second end of the spiral conveying rod 24 is set in a forward direction to move the gravel toward the first end, and the first end of the spiral conveying rod 24 is set in a reverse direction to move the gravel toward the second end and fall into the second conveying pipe 22, avoiding accumulation at the first end of the spiral conveying rod 24.

[0041] As a preferred implementation of this embodiment, the transmission structure adopts a gear transmission method, specifically including a driving gear 25 and a driven gear 26. Among them, the driving gear 25 is connected to the output end of the auger drive unit, and the driven gear 26 is connected to the end of the screw conveying rod 24 and meshes with the driving gear 25, so as to drive the screw conveying rod 24 to rotate through gear transmission. At the same time, the transmission ratio of the driving gear 25 and the driven gear 26 can be adjusted so that the screw conveying rod 24 has a reasonable rotation speed, conveying speed, etc.

[0042] As a preferred implementation of this embodiment, the auger driving part adopts a pneumatic motor 27, which can output a rotational motion when ventilated, and the output shaft of the pneumatic motor 27 is connected to the driving gear 25, thereby driving the driving gear 25 to rotate. The main purpose of using the pneumatic motor 27 is that the exhaust gas discharged by the pneumatic motor 27 can be directly used to spray the gravel outward without setting up a pneumatic component separately, thereby reducing the structural layout space and reducing the difficulty of arranging the structure inside the box component 30.

[0043] As a preferred embodiment of this embodiment, the gravel conveying assembly 20 also includes a first mounting plate 28 and a second mounting plate 29 which are arranged opposite to each other. Among them, the first conveying pipe 21 and the pneumatic motor 27 are arranged between the first mounting plate 28 and the second mounting plate 29, and the two ends of the first conveying pipe 21 and the pneumatic motor 27 are connected to the first mounting plate 28 and the second mounting plate 29 respectively. For the first conveying pipe 21, both ends are sealed, and the gravel does not need to be delivered from the two ends of the first conveying pipe 21. At the same time, the end of the spiral conveying rod 24 passes through the second mounting plate 29 to the outside and is installed with a driven gear 26. For the pneumatic motor 27, the output shaft of the second end of the pneumatic motor 27 passes through the second mounting plate 29 to the outside and is installed with a driving gear 25 to form a transmission, and the first end of the pneumatic motor 27 is used for air guide drive. Therefore, the interior of the box assembly 30 is mainly used to arrange the first conveying pipe 21 and the pneumatic motor 27, and the two are arranged side by side to minimize the occupied space.

[0044] At the same time Figure 6 As shown, the box assembly 30 includes a box 31, a double-threaded straight-through 32, a second sealing gasket 33, a third sealing gasket 34 and a second installation group hole 35. The double-threaded straight-through is arranged on the side wall of the box 31, corresponding to the first end of the pneumatic motor 27, and is used to connect the input end of the pneumatic motor 27, so that after the pipeline of the air source is connected to the double-threaded straight-through 32, the pneumatic motor 27 can be ventilated. The second sealing gasket 33 is arranged between the double-threaded straight-through 32 and the box 31 to seal the gap between the double-threaded straight-through 32 and the box 31 to ensure the sealing of the box 31. The third sealing gasket 34 is arranged at the top and bottom of the box 31, and is used to seal the gap between the upper plate assembly 10 and the lower plate assembly 40 and the box 31 after installation to ensure the sealing. The second installation group hole 35 corresponds to the first installation group hole 13, so that the upper plate assembly 10 and the box 31 are firmly connected and sealed by installing bolts.

[0045] At the same time Figure 7 As shown, the lower plate assembly 40 includes a lower plate 41, a second sand-falling hole 42, a fourth sealing gasket 43, an adjusting nut 44, an air guide tube 45, an elbow 46 and a joint 47. Among them, the lower plate 41 is provided with a third installation group hole 48 at four diagonal positions, which is used to connect with the box body 31 through mounting bolts, and the third sealing gasket 34 is relied on to ensure the sealing inside the box body 31. The second sand-falling hole 42 is provided on the lower plate 41 and corresponds to the second conveying pipe 22. After installation, the second sand-falling hole 42 is connected to the end of the second conveying pipe 22. The fourth sealing gasket 43 is arranged on the inner wall of the second sand-falling hole 42 to seal the gap between the second sand-falling hole 42 and the second conveying pipe 22 and the edge of the elbow 45 to ensure sealing.

[0046] The curved pipe 46 is arranged below the lower plate 41, and the top of the curved pipe 46 is connected to the second delivery pipe 22 for scattering the gravel outward. The air guide pipe 45 is also located below the lower plate 41, and the two ends of the air guide pipe 45 are respectively connected to the curved pipe 46 and the adjusting nut 44. The adjusting nut 44 is used to control the size of the inlet of the air guide pipe 45, so that the exhaust gas in the box 31 can enter the curved pipe 46 from the air guide pipe 45 to drive the gravel. The joint 47 is arranged at the bottom end of the curved pipe 46, which can be set in different forms so that the gravel can be scattered outward in a preset manner, and of course, it can also be connected to other equipment to further transport the gravel.

[0047] It should be noted that the adjusting nut 44 is rotatably connected to the lower plate 41 and can be turned to adjust the size of the inlet of the air duct 45, thereby adjusting the flow of the air duct 45 to obtain different sand output amounts to meet different sand spreading requirements.

[0048] As described above, the constant flow high-speed sand-spreading device provided by this embodiment uses clean air as power, and the high-pressure gas is connected to the pneumatic motor 27 through the double-threaded straight-through 32. The pneumatic motor 27 transmits power to the screw conveying rod 24 through the gear transmission structure, and the screw conveying rod 24 conveys the gravel falling from the funnel mouth 23 into the second end of the first conveying pipe 21 to the first end, and then falls into the second conveying pipe 22, and finally enters the curved pipe 46. The tail gas discharged by the pneumatic motor 27 in the box 31 is used as power to spray the gravel at a high speed to the designated position. Therefore, the gravel can be accurately and constantly conveyed and sprayed to the designated position by high-pressure gas. Since the device is powered by the pneumatic motor 27, the use requirements for the environment, such as ambient temperature, gravel compaction, etc., are greatly reduced, and the stability of use is improved. At the same time, the amount of sand output can be accurately controlled by adjusting the air source pressure and changing the inner diameter of the adjusting nut 44. The device is driven by a single pneumatic motor 27, achieving "one machine with multiple uses", improving the compactness of the structure, reducing the layout space, saving costs, simplifying the operating process, and further improving the flexibility of use.

[0049] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A constant flow high-speed sand spreading device, characterized in that: It comprises an upper plate assembly (10), a gravel conveying assembly (20), a box assembly (30) and a lower plate assembly (40); The box assembly (30) comprises a box (31); The upper plate assembly (10) is arranged on the top of the box body (31), and comprises an upper plate (11) and a first sand falling hole (12); the upper plate (11) is connected to the box body (31) to seal the interior of the box body (31); and the first sand falling hole (12) corresponds to the gravel conveying assembly (20); The gravel conveying assembly (20) comprises a conveying pipe, a spiral conveying rod (24), an auger driving unit and a transmission structure; the conveying pipe is connected to the first sand falling hole (12), the spiral conveying rod (24) is arranged in the conveying pipe, and the end of the spiral conveying rod (24) is connected to the auger driving unit through the transmission structure; the auger driving unit is a pneumatic motor (27); The lower plate assembly (40) is arranged at the bottom of the box body (31), and comprises a lower plate (41), a second sand falling hole (42), an air guide pipe (45), and a bent pipe (46); the lower plate (41) is connected to the box body (31) so that the interior of the box body (31) is sealed; the second sand falling hole (42) is opened on the lower plate (41) and corresponds to the delivery pipe; the top end of the bent pipe (46) is connected to the delivery pipe; and the two ends of the air guide pipe (45) are respectively connected to the bent pipe (46) and the interior of the box body (31).

2. A constant flow high-speed sand spreading device according to claim 1, characterized in that: The upper plate assembly (10) further comprises a first sealing gasket (14), wherein the first sealing gasket (14) is arranged at the hole wall of the first sand falling hole (12).

3. A constant flow high-speed sand spreading device according to claim 1, characterized in that: The delivery pipe comprises a first delivery pipe (21) and a second delivery pipe (22), wherein the first delivery pipe (21) is horizontally arranged relative to the box body (31), and the second delivery pipe (22) is connected to the first end of the first delivery pipe (21) and is vertically arranged relative to the box body (31).

4. A constant flow high-speed sand spreading device according to claim 3, characterized in that: The gravel conveying assembly (20) further comprises a funnel mouth (23), the bottom of the funnel mouth (23) is in communication with the first conveying pipe (21), and the top of the funnel mouth (23) is aligned with the first sand falling hole (12).

5. The constant flow high-speed sand spreading device according to claim 1, characterized in that: The transmission structure comprises a driving gear (25) and a driven gear (26), wherein the driving gear (25) is connected to the output end of the pneumatic motor (27), and the driven gear (26) is connected to the end of the spiral conveying rod (24) and meshes with the driving gear (25).

6. A constant flow high-speed sand spreading device according to claim 3, characterized in that: The gravel conveying assembly (20) further comprises a first mounting plate (28) and a second mounting plate (29) which are arranged opposite to each other; the first conveying pipe (21) and the pneumatic motor (27) are arranged between the first mounting plate (28) and the second mounting plate (29); and the first conveying pipe (21) and the pneumatic motor (27) are respectively connected to the first mounting plate (28) and the second mounting plate (29) at both ends.

7. A constant flow high-speed sand spreading device according to claim 1, characterized in that: The box assembly (30) further comprises a double-threaded through-hole (32), which is arranged on the side wall of the box (31) and is used to connect the input end of the pneumatic motor (27) with the pipeline of the air source.

8. A constant flow high-speed sand spreading device according to claim 7, characterized in that: The box assembly (30) further comprises a second sealing gasket (33) and a third sealing gasket (34), wherein the second sealing gasket (33) is arranged between the double-threaded through-hole (32) and the box (31), and the third sealing gasket (34) is arranged at the top and the bottom of the box (31).

9. The constant flow high-speed sand spreading device according to claim 1, characterized in that: The lower plate assembly (40) further comprises a joint (47), wherein the joint (47) is connected to the bottom end of the curved pipe (46), and the joint (47) has a variety of different forms.

10. The constant flow high-speed sand spreading device according to claim 1, characterized in that: The lower plate assembly (40) further comprises an adjusting nut, which is arranged in the box body (31) and connected to the air guide pipe (45) and is used to control the size of the inlet of the air guide pipe (45).

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