A pneumatic spiral sand spreader

Abstract

The utility model discloses a pneumatic spiral sand spreader belongs to railway transportation technical field, include: fuselage, including shell, sand material partial shipment shell, shell and sand material partial shipment shell constitute sand storage tank, distribution tank, and sand storage tank is connected with distribution tank, sand material introduction part is used for introducing sand material in the external hopper into sand storage tank, sand blasting part is used for spraying sand material, including pneumatic unit, distribution unit, sand blasting pipe, and pneumatic unit sprays sand material in distribution tank through sand blasting pipe. The utility model utilizes compressed air to assist sand material to spray, effectively solves the problem of sand delivery in railway construction and maintenance scene, improves the uniformity and reliability of sand delivery, effectively improves the working environment of wheel rail contact surface, improves the adhesion coefficient, avoids the serious situation of sliding between wheel rail.

Description

Technical Field

[0001] This utility model relates to the field of railway transportation technology, and in particular to a pneumatic spiral sand spreader. Background Technology

[0002] During the traction or braking process of railcars, to prevent wheel abrasion during wheel slippage or skidding, locomotives are equipped with sanding systems to increase the wheel-rail adhesion coefficient and reduce or eliminate the chance of wheel slippage and skidding. The sander in the locomotive sanding system is a key device for improving wheel-rail adhesion. The sander is directly installed near the locomotive bogie, and each bogie is usually equipped with multiple sand boxes. The sander sprays sand particles onto the rail surface at the front end of the wheel-rail contact face through a sand pipe. Modern EMUs have sand boxes and sanders installed under the car, and the driver triggers the spraying automatically via a control panel button or the system.

[0003] Traditional sand spreading boxes generally lack refined compartment design, and the sand output is significantly affected by factors such as gravity and humidity, making it difficult to achieve precise control. This can easily lead to excessive or insufficient sandblasting, affecting the track adhesion control effect. At the same time, the air outlet path design of the sand spreading machine for airflow-driven sand movement is simple, resulting in insufficient utilization of gas kinetic energy. Furthermore, the air-sand mixing ratio in the sand pipe is unbalanced, which can easily cause pipe blockage or sand deposition, reducing system reliability. Utility Model Content

[0004] The technical problem to be solved by this utility model is that existing sand spreading devices have problems such as uneven sand spreading and sand deposition.

[0005] To address the above technical problems, the technical solution adopted by this utility model is: a pneumatic spiral sand spreader, which uses a pneumatic motor, a reducer, and a spiral auger to quantitatively output sand, including:

[0006] The machine body, for the installation of the sand inlet and sandblasting section, includes an outer shell and a sand dispensing shell. The outer shell and the sand dispensing shell form a sand storage box and a distribution box. The sand storage box is used to temporarily store sand. The distribution box is used to evenly distribute the sand in the sand storage box. The sand storage box and the distribution box are connected.

[0007] The sand inlet is used to introduce sand from the external hopper into the sand storage box;

[0008] The sandblasting section, used to spray sand, includes a pneumatic unit, a distribution unit, and a sand blowing pipe. The pneumatic unit sprays the sand from the distribution box through the sand blowing pipe.

[0009] Preferably, the pneumatic unit includes a regulating valve and an air connection head, the regulating valve is mounted on the machine body, and the air connection head is connected to the input end of the regulating valve.

[0010] Preferably, the sand inlet includes a power unit, a reducer, a spiral auger, and a connecting flange. The connecting flange is connected to an external hopper. The spiral auger is rotatably connected to the machine body. The power unit is driven to the input end of the reducer, and the spiral auger is driven to the output end of the reducer. The spiral auger introduces the sand into the sand storage box.

[0011] Preferably, the power unit includes a pneumatic motor, and the other output end of the regulating valve is connected to the pneumatic motor.

[0012] Preferably, the reducer includes a first gear and a second gear, the first gear being connected to the power unit for transmission, and the second gear being connected to the auger for transmission, wherein the number of teeth on the first gear is less than the number of teeth on the second gear.

[0013] Preferably, the distribution unit includes a fixed pipe and a drive assembly. The fixed pipe is fixedly connected to the machine body. The output end of the regulating valve is connected to the fixed pipe. The fixed pipe is provided with an air jet groove facing the sand blowing pipe. A rotating plate assembly is rotatably connected to the fixed pipe. The rotating plate assembly is driven by the drive assembly. Multiple partitions on the rotating plate assembly divide the distribution box into multiple distribution compartments. The pneumatic unit blows high-pressure gas into the fixed pipe, then ejects it from the air jet groove, and then carries the sand in the distribution compartments into the sand blowing pipe.

[0014] Preferably, the drive assembly includes a motor, a drive gear, and a driven gear. The driven gear is mounted on the rotating plate assembly, the motor is mounted on the machine body, and the drive gear is mounted on the output end of the motor. The drive gear meshes with the driven gear.

[0015] Preferably, a sealing cylinder plate is rotatably connected to the fixed pipe, the inner wall of the fixed pipe is provided with a spiral groove, a spring is installed on the sealing cylinder plate, a movable piece is installed at the end of the spring, and a sliding pin is provided on the movable piece to engage with the spiral groove. The sealing cylinder plate is used to seal the air jet groove, and the movable piece is slidably connected to the sealing cylinder plate. The outer diameter of the movable piece is the same as the inner diameter of the fixed pipe.

[0016] The advantages of this utility model compared with the prior art are:

[0017] (1) This utility model utilizes compressed air to assist in sand spraying, effectively solving the problem of sand transportation in railway construction and maintenance scenarios, and improving the uniformity and reliability of sand transportation; at the same time, it effectively improves the working environment of the wheel-rail contact surface, increases the adhesion coefficient, and avoids serious slippage between the wheel and rail.

[0018] (2) This utility model sets multiple distribution grids in the distribution box to quantitatively configure the sand material, thereby evenly distributing the amount of sand discharged each time, enhancing the precision of sandblasting. At the same time, the distribution grids will also reduce the size of the chamber when discharging sand, which can improve the accuracy and force of each sand discharge of this device.

[0019] (3) By setting a sealing cylinder plate, the sand material can be completely expelled from the distribution box each time it is sprayed. At the same time, when not in operation, the sealing cylinder plate can also block the air spray groove to prevent the sand material in the distribution box from flowing into the fixed pipe and clogging it. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0022] Figure 3 This is a partial structural diagram of the present invention.

[0023] Figure 4 This is a schematic diagram of the sand material packaging shell structure.

[0024] Figure 5 This is a cross-sectional view of the sand filling shell and fixing pipe structure.

[0025] Figure 6 This is a schematic diagram of the rotating plate assembly structure.

[0026] Figure 7 This is a schematic diagram of the fixed pipe and air jet channel structure.

[0027] Figure 8 This is a cross-sectional view of the fixed tube, movable plate, and spiral groove structure.

[0028] Figure 9 This is a schematic diagram of the sealing cylinder plate and movable plate structure.

[0029] Reference numerals: 101-Outer shell; 102-Pneumatic motor; 103-Regulating valve; 104-Sand blowing pipe; 105-Screw auger; 106-Connecting flange; 107-Air circuit connector; 108-Sand material dispensing shell; 109-Rotating plate assembly; 110-First gear; 111-Second gear; 112-Motor; 113-Driving gear; 114-Driven gear; 115-Fixed pipe; 116-Air jet channel; 117-Sealing cylinder plate; 118-Screw groove; 119-Moving plate; 120-Spring. Detailed Implementation

[0030] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this application. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0032] Example 1:

[0033] This embodiment provides a pneumatic spiral sand spreader, specifically as follows: Figures 1-3 As shown, it includes:

[0034] The machine body, for the installation of the sand inlet and sandblasting section, includes an outer shell 101 and a sand dispensing shell 108. The outer shell 101 and the sand dispensing shell 108 form a sand storage box and a distribution box. The sand storage box is used to temporarily store sand, and the distribution box is used to evenly distribute the sand in the sand storage box. The sand storage box and the distribution box are connected.

[0035] The sand inlet is used to introduce sand from the external hopper into the sand storage box;

[0036] The sandblasting unit, used to spray sand, includes a pneumatic unit, a distribution unit, and a sand blowing pipe 104. The pneumatic unit sprays the sand in the distribution box through the sand blowing pipe 104.

[0037] During operation, sand from the external hopper is introduced into the sand storage box via the sand inlet. Due to the inclined bottom of the storage box, the sand automatically flows into the distribution box under gravity. The pneumatic unit of the sandblasting unit provides air pressure to the distribution unit, causing it to gradually spray the sand from the distribution box through the sand-blowing pipe 104, achieving automatic sand spreading. The pneumatic unit utilizes compressed air supplied by the locomotive, effectively solving the problem of sand transportation in railway construction and maintenance scenarios, improving the efficiency and reliability of sand transportation; simultaneously, it effectively improves the working environment of the wheel-rail contact surface, increases the adhesion coefficient, and prevents severe slippage between the wheel and rail.

[0038] Example 2:

[0039] This embodiment further expands the allocation unit based on Embodiment 1, specifically as follows: Figures 2-7As shown, the distribution unit includes a fixed pipe 115 and a drive assembly. The fixed pipe 115 is fixedly connected to the machine body. An air jet groove 116 is provided on the fixed pipe 115, facing the sand blowing pipe 104. A rotating plate assembly 109 is rotatably connected to the fixed pipe 115. The rotating plate assembly 109 is connected to the drive assembly. Multiple partitions on the rotating plate assembly 109 divide the distribution box into multiple distribution compartments. Gaps are pre-set between the partitions to allow airflow to pass through. The pneumatic unit blows high-pressure gas into the fixed pipe 115 and then sprays it out from the air jet groove 116. At this time, the gas carries the sand in the distribution compartment into the sand blowing pipe 104 and then sprays it out from the sand blowing pipe 104.

[0040] By setting multiple distribution compartments in the distribution box to quantitatively allocate sand, the amount of sand discharged each time is evenly distributed, enhancing the precision of sandblasting. At the same time, the distribution compartments also reduce the size of the chamber when discharging sand, which can improve the accuracy and force of each sand discharge of this device.

[0041] Furthermore, the drive assembly includes a motor 112, a drive gear 113, and a driven gear 114. The driven gear 114 is mounted on the rotating plate assembly 109, the motor 112 is mounted on the machine body, and the drive gear 113 is mounted on the output end of the motor 112. The drive gear 113 meshes with the driven gear 114.

[0042] By starting the motor 112, the motor 112 drives the drive gear 113, which in turn drives the driven gear 114. The driven gear 114 drives the rotating plate assembly 109 to rotate, thereby enabling the sand in the sand storage box to be continuously replenished into the new distribution compartment. At the same time, the gas ejected from the jet vent 116 can also continuously eject the sand in different distribution compartments from the sand blowing pipe 104.

[0043] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0044] Example 3:

[0045] This embodiment is a further extension of embodiment 2, as follows: Figure 5 , Figure 8 , Figure 9 As shown, a sealing cylinder plate 117 is rotatably connected to the fixed pipe 115. A spiral groove 118 is provided on the inner wall of the fixed pipe 115. A spring 120 is installed on the sealing cylinder plate 117. A movable piece 119 is installed at the end of the spring 120. A sliding pin that meshes with the spiral groove 118 is provided on the movable piece 119. The sealing cylinder plate 117 is used to seal the air jet groove 116. The movable piece 119 is slidably connected to the sealing cylinder plate 117. The outer diameter of the movable piece 119 is the same as the inner diameter of the fixed pipe 115.

[0046] Initially, the sealing plate 117 blocks the jet groove 116. When gas enters the fixed pipe 115, the internal pressure of the fixed pipe 115 increases. At this time, the movable plate 119 begins to compress the spring 120. The spring 120 is compressed. During the movement of the movable plate 119, because the sliding pin on it engages with the spiral groove 118, the movable plate 119 rotates and moves laterally. At this time, the rotation of the movable plate 119 will drive the sealing plate 117 to rotate synchronously, thus no longer blocking the jet groove 116, and the gas will be ejected from the jet groove 116. When the regulating valve 103 stops releasing gas, the pressure inside the fixed pipe 115 returns to normal. At this time, the spring 120 drives the movable plate 119 to reset, so the sealing plate 117 will reverse and block the jet groove 116 again.

[0047] This setup allows the gas to be completely expelled from the distribution box each time the sand is sprayed. At the same time, when not in operation, the sealing plate 117 can also block the air jet channel 116 to prevent the sand in the distribution box from flowing into the fixed pipe 115 and clogging it.

[0048] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0049] Example 4:

[0050] This embodiment further expands the pneumatic unit based on the above embodiment, specifically as follows: Figure 3 As shown, the pneumatic unit includes a regulating valve 103 and an air connection 107. The regulating valve 103 is mounted on the machine body, the air connection 107 is connected to the input end of the regulating valve 103, and the output end of the regulating valve 103 is connected to the fixed pipe 115.

[0051] Connect the air line connector 107 to the locomotive exhaust port, and control the working status of the sandblasting unit by controlling the opening and closing of the regulating valve 103.

[0052] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0053] Example 5:

[0054] This embodiment further expands upon embodiment 4 by extending the sand introduction section, specifically as follows: Figures 1-3 As shown, the sand inlet includes a power unit, a reducer, a spiral auger 105, and a connecting flange 106. The connecting flange 106 is connected to an external hopper. The spiral auger 105 is rotatably connected to the machine body. The power unit is driven to the input end of the reducer, and the spiral auger 105 is driven to the output end of the reducer. The spiral auger 105 introduces the sand into the sand storage box.

[0055] The power unit drives the reducer, which in turn drives the auger 105 to rotate, so that the sand is introduced into the sand storage box by the auger 105. The reducer plays the role of deceleration and torque increase.

[0056] Furthermore, the power unit includes a pneumatic motor 102, and the other output end of the regulating valve 103 is connected to the pneumatic motor 102. The opening and closing of the regulating valve 103 and its opening mode are controlled to achieve air circuit regulation, so that the regulating valve 103 can drive the pneumatic motor 102 or the sandblasting unit.

[0057] Furthermore, the reducer includes a first gear 110 and a second gear 111. The first gear 110 is connected to the power unit for transmission, and the second gear 111 is connected to the auger 105 for transmission. The number of teeth on the first gear 110 is less than the number of teeth on the second gear 111. The first gear 110 and the second gear 111 are mounted on the machine body and are enclosed to prevent external sand and dust pollution.

[0058] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again.

[0059] This utility model is not limited to the specific embodiments described above. Any modifications made by those skilled in the art based on the above concept without creative effort shall fall within the protection scope of this utility model.

Claims

1. A pneumatic spiral sand spreader, characterized in that, The sand is quantitatively output through a pneumatic motor, reducer, and auger (105), including: The machine body, including the outer shell (101), is used for the installation of the sand inlet and the sandblasting section. The sand inlet is used to introduce sand from the external hopper into the machine body; The sandblasting unit, used to spray sand, includes a pneumatic unit, a distribution unit, and a sand blowing pipe (104), wherein the pneumatic unit sprays sand through the sand blowing pipe (104); The pneumatic unit includes a regulating valve (103) and an air connection head (107). The regulating valve (103) is mounted on the machine body, and the air connection head (107) is connected to the input end of the regulating valve (103). The sand inlet includes a power unit, a pneumatic motor, a reducer, a spiral auger (105), and a connecting flange (106). The connecting flange (106) is connected to an external hopper. The spiral auger (105) is rotatably connected to the machine body. The power unit is driven to the input end of the reducer, and the spiral auger (105) is driven to the output end of the reducer. The power unit includes a pneumatic motor (102), and the other output end of the regulating valve (103) is connected to the pneumatic motor (102).

2. The pneumatic spiral sand spreader according to claim 1, characterized in that: The outer shell (101) is provided with a sand distribution shell (108). The outer shell (101) and the sand distribution shell (108) form a sand storage box and a distribution box. The sand storage box is used to temporarily store sand, and the distribution box is used to evenly distribute the sand in the sand storage box. The sand storage box and the distribution box are connected. The spiral auger (105) introduces the sand into the sand storage box.

3. A pneumatic spiral sand spreader according to claim 2, characterized in that: The distribution unit includes a fixed pipe (115) and a drive group. The fixed pipe (115) is fixedly connected to the machine body. The output end of the regulating valve (103) is connected to the fixed pipe (115). The fixed pipe (115) is provided with an air jet groove (116) facing the sand blowing pipe (104). The fixed pipe (115) is rotatably connected to a rotating plate group (109). The rotating plate group (109) is connected to the drive group. Multiple partitions on the rotating plate group (109) divide the distribution box into multiple distribution compartments. The pneumatic unit blows high-pressure gas into the fixed pipe (115), and then sprays it out from the air jet groove (116), and then carries the sand in the distribution compartment into the sand blowing pipe (104).

4. A pneumatic spiral sand spreader according to claim 3, characterized in that: The drive assembly includes a motor (112), a drive gear (113), and a driven gear (114). The driven gear (114) is mounted on the rotating plate assembly (109). The motor (112) is mounted on the machine body. The drive gear (113) is mounted on the output end of the motor (112). The drive gear (113) meshes with the driven gear (114).

5. A pneumatic spiral sand spreader according to claim 3, characterized in that: The sealing cylinder plate (117) is rotatably connected to the fixed tube (115). The inner wall of the fixed tube (115) is provided with a spiral groove (118). A spring (120) is installed on the sealing cylinder plate (117). A movable piece (119) is installed at the end of the spring (120). A sliding pin that engages with the spiral groove (118) is provided on the movable piece (119). The sealing cylinder plate (117) is used to seal the air jet groove (116). The movable piece (119) is slidably connected to the sealing cylinder plate (117). The outer diameter of the movable piece (119) is the same as the inner diameter of the fixed tube (115).

6. A pneumatic spiral sand spreader according to claim 1, characterized in that: The reducer includes a first gear (110) and a second gear (111). The first gear (110) is connected to the power unit, and the second gear (111) is connected to the auger (105). The number of teeth of the first gear (110) is less than the number of teeth of the second gear (111).

Images