Automatic sand adding device for railway motor train unit

Abstract

The utility model discloses an automatic sand adding device for a railway motor train unit, relates to the field of railway motor train unit maintenance equipment, and can solve the problems that the efficiency is low and the labor intensity is high due to the fact that existing supplementary operation of motor train sand spraying mostly depends on manual operation. The sand adding device comprises the air pipe winding component, the pneumatic particle conveyor, the sand conveying component and the like, rapid and efficient sand filling and conveying can be achieved, meanwhile, a control valve and a sand outlet switch are arranged, operation is easier and more convenient, the labor intensity of operators is greatly reduced, and the sand adding device can be controlled by controlling the switch component, so that the sand adding device is more convenient to operate. Operators can control starting and stopping of the sand adding operation more quickly, repeated and tedious manual intervention is avoided, pneumatic control is adopted in the sand adding operation process, the opportunity that the operators make direct contact with dangerous areas is reduced, safety risks in work are reduced, and the efficiency and precision of the sand adding operation of the railway motor train unit are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of railway EMU maintenance equipment, specifically to an automatic sand-adding device for railway EMUs. Background Technology

[0002] When high-speed trains operate in adverse weather conditions (such as rain and snow), the adhesion between the wheels and the rails decreases significantly, causing the trains to slip. To improve driving safety and stability, high-speed trains are equipped with a sand-spraying system, which increases the friction between the wheels and the rails by spraying dry quartz sand.

[0003] However, in the current maintenance and repair process of most depots, the replenishment of sand storage boxes in EMUs mostly relies on manual operation. This method is not only inefficient and labor-intensive, but also causes many inconveniences in actual operation due to the narrow location of the sand replenishment port in some sand storage boxes. Utility Model Content

[0004] To address the problems of low efficiency and high labor intensity caused by the reliance on manual operation in existing high-speed train sand spreading operations, this application provides an automatic sand spreading device for railway high-speed trains to solve the above problems.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] An automatic sand-adding device for railway EMUs includes a main frame, the main frame including a support frame, the support frame having a first mounting cavity, a second mounting cavity and a third mounting cavity respectively opened inside the support frame, the first mounting cavity and the second mounting cavity being located on the left and right sides of the support frame, and the third mounting cavity being located at the upper end of the first mounting cavity;

[0007] The first mounting cavity is equipped with a hose reel component for connecting to an air source, the third mounting cavity is equipped with a sand storage component, the bottom of the sand storage component is connected to a sand discharge component, and the sand discharge component is respectively connected to a control valve and a sand feeding component.

[0008] The top surface of the support frame is provided with a control switch component, which includes a sand adding switch and a sand discharging switch. The control valve is electrically connected to the sand adding switch, and the air pipe winding component and the sand feeding component are both pneumatically connected to the sand discharging switch. The outlet end of the sand feeding component is also connected to the sand discharging component.

[0009] As a further improvement of this utility model, the overall frame also includes a first door panel, a second door panel, a sand storage box, and a push handle. The first door panel and the second door panel are respectively hinged to the outside of the first mounting cavity and the second mounting cavity. The sand storage box is installed on the inner bottom surface of the first mounting cavity. The push handle is connected to the support frame, and the bottom surface of the support frame is also provided with multiple casters.

[0010] As a further improvement of this utility model, the sand storage component includes a sand storage box and a cover plate. The sand storage box is installed inside the third mounting cavity, and the bottom of the sand storage box is inverted conical. The cover plate is hinged to the side of the top surface of the sand storage box, and the sand discharge component is connected to the bottom of the sand storage box.

[0011] As a further improvement of this utility model, the air tube winding component includes a winding device and an air source interface tube, which is installed on the inner wall of the first mounting cavity. The length of the air source interface tube is greater than 15m and is wound inside the winding device. One end of the air source interface tube is pneumatically connected to the sand discharge switch, and the other end of the air source interface tube extends to the outside of the support frame and is used to communicate with the air source.

[0012] As a further improvement of this utility model, the sand discharge component includes a sand discharge pipe and a switch valve. One end of the sand discharge pipe is screwed to the bottom of the sand storage tank, and the other end of the sand discharge pipe is an open pipe. The switch valve is installed at the open pipe of the sand discharge pipe, and the control valve and the sand delivery component are both connected to the sand discharge pipe.

[0013] As a further improvement of this utility model, the sand feeding component includes a pneumatic particle conveyor and a sand feeding pipe. One end of the pneumatic particle conveyor is connected to the sand discharge pipe, and the other end of the pneumatic particle conveyor is connected to the sand feeding pipe. The pneumatic particle conveyor is pneumatically connected to the sand discharge switch, and the sand discharge component is screwed to the other end of the sand feeding pipe.

[0014] As a further improvement of this utility model, the pneumatic particle conveyor includes a conveying pipe with a sand inlet and an air outlet at its two ends. The sand inlet is connected to the sand discharge pipe, and the air outlet is connected to the sand delivery pipe. An air inlet is also provided on the conveying pipe, and the air inlet is pneumatically connected to the sand discharge switch through a pipeline.

[0015] As a further improvement of this utility model, the sand discharge component includes a first connecting seat, a first sand discharge pipe and a first connecting sleeve. The first sand discharge pipe is connected to the sand delivery pipe, and the first connecting sleeve is used to fix the first sand discharge pipe and the sand delivery pipe. The first connecting sleeve is fixedly connected to the first connecting seat.

[0016] The first sand outlet pipe is fitted with a fixing block, a first filter screen, a pressing frame, and a rotating frame in sequence along the sand outlet direction. The fixing block is located in the inner cavity of the first connecting sleeve. Each of the four end faces of the fixing block is provided with a fixing pin. The pressing frame is fixed to the outside of the first connecting sleeve by the four fixing pins. The opening diameter of the first filter screen is the same as the outer diameter of the first connecting sleeve. The first filter screen abuts against the end face of the first connecting sleeve and is pressed by the pressing frame. The rotating frame is fixedly installed on the outside of the first connecting sleeve by bolts, and the fixed position of the rotating frame is staggered from the fixed position of the pressing frame.

[0017] As a further improvement of this utility model, the sand discharge component includes a second connecting seat, a second sand discharge pipe and a second connecting sleeve. The second sand discharge pipe is connected to the sand delivery pipe, and the second connecting sleeve is used to fix the second sand discharge pipe and the sand delivery pipe. The second connecting sleeve is installed in the inner cavity of the second connecting seat.

[0018] The second sand outlet pipe is provided with a washer, a sand-adding plate, a second filter screen and a pressure plate sequentially sleeved on its exterior along the sand outlet direction. The two end faces of the washer abut against the second connecting seat and the sand-adding plate, respectively. The second filter screen has the same opening shape as the pressure plate and is located between the sand-adding plate and the pressure plate. The pressure plate is screwed to the sand-adding plate. The end face of the pressure plate is also connected to a latch, which engages with a hook provided on the second connecting seat.

[0019] As a further improvement of this utility model, the control switch component also includes an information plate for identifying information, which is installed on the top surface of the support frame.

[0020] Compared with the prior art, the technical solution provided by this utility model has the following advantages and effects:

[0021] 1. The sand adding device in this application greatly reduces the need for manual operation by coordinating the control switch component, air pipe winding component, sand discharge component, sand feeding component, and sand outlet component. Traditional sand spreading operations usually rely on manual operation, which has the problems of low efficiency and high labor intensity. The design of this device makes the sand adding operation more automated, improves the work efficiency and reduces manual intervention.

[0022] 2. The sand-adding device in this application includes an air hose winding component, a pneumatic particle conveyor, and a sand-feeding component, enabling rapid and efficient sand filling and transportation. It is also equipped with control valves and a sand discharge switch, making operation simpler and greatly reducing the labor intensity of operators. Through the control switch components (sand-adding switch and sand-discharging switch), operators can more quickly control the start and stop of sand-adding operations, avoiding repetitive and tedious manual intervention. The internal structure of the support frame is divided into multiple installation chambers (such as the first installation chamber, the second installation chamber, and the third installation chamber), which allows for the rational layout of the air hose winding component, sand storage component, sand discharge component, and sand-feeding component, which helps to reduce the size of the equipment, improve the overall stability of the equipment, and enhance transportation convenience. The design of multiple casters allows the sand-adding device to move flexibly in the railway environment, facilitating transportation, installation, and position adjustment.

[0023] 3. In this application, by installing a sand storage box on the bottom surface of the first installation cavity, the remaining sand can be temporarily stored, or unused sand can be collected after the sand adding operation is completed, facilitating subsequent centralized processing or reuse. This also avoids operational interruptions when the sand runs out. Furthermore, the push handle facilitates the movement and adjustment of the equipment, further improving work continuity.

[0024] 4. The sand discharge component in this application effectively prevents sand from clogging the conveying pipeline. The filter screen can effectively isolate impurities, preventing blockage of the sand conveying system, ensuring the stability and long-term reliability of the equipment. Furthermore, the use of pneumatic control during sand adding operations reduces the chance of personnel directly contacting hazardous areas, lowers safety risks during operation, significantly improves the efficiency and accuracy of sand adding operations for railway EMUs, reduces manual operation and labor intensity, and improves the safety of the working environment. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is an isometric drawing of this utility model;

[0027] Figure 2 This is an isometric view of the present invention from another angle;

[0028] Figure 3 This is a front view of the present invention;

[0029] Figure 4 yes Figure 3A sectional view along section symbol AA;

[0030] Figure 5 yes Figure 4 Enlarged view of a portion of area A in the middle;

[0031] Figure 6 This is the left view of this utility model;

[0032] Figure 7 This is an exploded isometric view of the sand-discharging component in this utility model;

[0033] Figure 8 This is an exploded isometric view of the sand-discharging component from another angle in this utility model;

[0034] Figure 9 This is an exploded front view of the sand-discharging component in this utility model;

[0035] Figure 10 This is an exploded isometric view of another sand-discharging component in this utility model;

[0036] Figure 11 This is an exploded isometric view of another sand-discharging component of this utility model from another angle;

[0037] Figure 12 This is an exploded front view of another sand-discharging component in this utility model.

[0038] In the diagram: 10. Main frame; 110. Support frame; 120. First mounting cavity; 130. Second mounting cavity; 140. First door panel; 150. Second door panel; 160. Excess sand box; 170. Third mounting cavity; 180. Push handle; 20. Control switch assembly; 210. Sand adding switch; 220. Sand discharging switch; 230. Information board; 30. Sand storage assembly; 310. Sand storage box; 320. Cover plate; 40. Control valve; 50. Air hose winding assembly; 510. Winding device; 520. Air source interface pipe; 60. Sand discharge assembly; 610. Sand discharge pipe; 620. Switch valve; 70. Sand feeding assembly; 710. Pneumatic particle conveyor. 7110, Conveying pipe; 7120, Sand inlet end; 7130, Air inlet; 7140, Air outlet end; 720, Sand delivery pipe; 80, Sand outlet component; 8110, First connecting seat; 8120, First sand outlet pipe; 8130, First connecting sleeve; 8140, Fixing block; 8150, Fixing pin; 8160, First filter screen; 8170, Pressing frame; 8180, Rotating frame; 8210, Second connecting seat; 8220, Second sand outlet pipe; 8230, Second connecting sleeve; 8240, Washer; 8250, Sand adding plate; 8260, Second filter screen; 8270, Pressing plate; 8280, Lock; 90, Caster wheel. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0044] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] Example 1:

[0046] An automatic sand-adding device for railway EMUs includes a main frame 10, the main frame 10 including a support frame 110, the support frame 110 having a first mounting cavity 120, a second mounting cavity 130 and a third mounting cavity 170 respectively opened inside, the first mounting cavity 120 and the second mounting cavity 130 being located on the left and right sides inside the support frame 110, and the third mounting cavity 170 being located above the first mounting cavity 120;

[0047] The first mounting cavity 120 is provided with a tube winding component 50 for connecting to an air source. The third mounting cavity 170 is provided with a sand storage component 30. The bottom of the sand storage component 30 is connected to a sand discharge component 60. The sand discharge component 60 is connected to a control valve 40 and a sand feeding component 70 respectively.

[0048] The top surface of the support frame 110 is provided with a control switch component 20, which includes a sand adding switch 210 and a sand discharging switch 220. The control valve 40 is electrically connected to the sand adding switch 210, and the air tube winding component 50 and the sand feeding component 70 are both pneumatically connected to the sand discharging switch 220. The outlet end of the sand feeding component 70 is also connected to a sand discharging component 80.

[0049] The support frame 110 is internally divided into a first mounting cavity 120, a second mounting cavity 130, and a third mounting cavity 170. The first and second mounting cavities 120 and 130 are located on the left and right sides of the support frame 110, and are mainly used to install the air hose winding component 50 and the sand discharge component 80. The third mounting cavity 170 is located at the upper end of the first mounting cavity 120 and is mainly used to install the sand storage component 30 and the sand discharge component 60. The air hose winding component 50 can connect to an external air source and wind up the air hose to ensure the supply of air and prevent the air hose from becoming messy or damaged by external forces. The air hose winding component 50 usually includes an automatic winding mechanism so that the air hose can be retracted when the air source is not needed, thereby saving space and improving the service life of the equipment. The sand storage component 30 is used to store sand. The sand discharge component 60 is responsible for conveying the sand in the sand storage component 30 to the sand discharge component 80. The main function of the sand delivery component 70 is to convey the sand from the sand storage component 30 to the position where sand needs to be added.

[0050] Specifically, the air hose reel component 50 in the sand adding unit is flexibly designed, allowing for quick connection to the air source at different locations to ensure a stable air supply. The sand storage component 30 is made of high-strength material, providing excellent sealing performance to prevent sand particles from becoming damp and clumping. The sand discharging component 60 precisely adjusts the sand quantity via the control valve 40, ensuring uniform sand addition. The sand delivery component 70 is made of wear-resistant material, extending its service life. The control switch component 20 is easy to operate, allowing operators to control sand addition and discharging according to actual conditions, greatly improving operational efficiency. The overall device has a compact structure, is easy to install and maintain, and is suitable for various types of railway EMUs.

[0051] Refer to the attached diagrams in the instruction manual. Figures 1-6 As shown, the main frame 10 also includes a first door panel 140, a second door panel 150, a sand storage box 160, and a push handle 180. The first door panel 140 and the second door panel 150 are respectively hinged to the outside of the first mounting cavity 120 and the second mounting cavity 130. The sand storage box 160 is installed on the inner bottom surface of the first mounting cavity 120. The push handle 180 is connected to the support frame 110, and the bottom surface of the support frame 110 is also provided with a plurality of casters 90.

[0052] The design of the first door panel 140 and the second door panel 150 facilitates the opening and maintenance of the equipment, providing convenient access for repairs. The sand bin 160 effectively collects excess sand generated during the sand-addition process, preventing waste and maintaining a clean working environment. The push handle 180 allows the entire device to be easily moved, adapting to different work scenarios. The omnidirectional casters 90 increase the device's flexibility, enabling it to turn freely in confined spaces. These improvements not only optimize the device's functionality but also significantly enhance its ease of use and maintenance efficiency.

[0053] Refer to the attached diagrams in the instruction manual. Figures 1-6 As shown, the sand storage component 30 includes a sand storage box 310 and a cover plate 320. The sand storage box 310 is installed inside the third mounting cavity 170, and the bottom of the sand storage box 310 is inverted conical. The cover plate 320 is hinged to the side of the top surface of the sand storage box 310, and the sand discharge component 60 is connected to the bottom of the sand storage box 310.

[0054] The sand storage tank 310 features an inverted conical bottom design, which facilitates smooth sand discharge and prevents sand accumulation that could hinder drainage. The hinged cover 320 allows for more flexible opening and closing of the sand storage tank 310, making it easier for operators to add and inspect sand. The connection between the sand discharge component 60 and the bottom of the sand storage tank 310 ensures uniform and efficient sand discharge, further improving the working efficiency and stability of the sand adding device. These optimizations in detail make the entire sand storage and discharge process smoother, reducing equipment failure rates and extending service life.

[0055] Refer to the attached diagrams in the instruction manual. Figures 1-6 As shown, the air tube winding component 50 includes a winding device 510 and an air source interface pipe 520, which is installed on the inner wall of the first mounting cavity 120. The length of the air source interface pipe 520 is greater than 15m and it is wound inside the winding device 510. One end of the air source interface pipe 520 is pneumatically connected to the sand discharge switch 220, and the other end of the air source interface pipe 520 extends to the outside of the support frame 110 and is used to communicate with the air source.

[0056] The design of the air hose reel component 50 fully considers convenience and safety in actual operation. The reasonable installation position of the reel 510 ensures that the air source interface pipe 520 will not become tangled or drag on the ground due to excessive length during use, reducing clutter at the work site. The air source interface pipe 520 is over 15 meters long, sufficient to meet the needs of most working conditions. Its design, wound inside the reel 510, allows the air hose to be neatly stored when not in use, avoiding a messy pipeline. One end of the air source interface pipe 520 is pneumatically connected to the sand outlet switch 220, ensuring precise control of sand adding operations, while the other end extends to the outside of the support frame 110, facilitating quick connection and disconnection with external air sources, improving the overall working efficiency of the device. Furthermore, this design of the air hose reel component 50 greatly reduces the risk of damage to the air hose due to wear or bending during use, further improving the reliability and service life of the device.

[0057] Refer to the attached diagrams in the instruction manual. Figures 1-6 As shown, the sand discharge component 60 includes a sand discharge pipe 610 and a switch valve 620. One end of the sand discharge pipe 610 is screwed to the bottom of the sand storage tank 310, and the other end of the sand discharge pipe 610 is an open pipe. The switch valve 620 is installed at the open pipe of the sand discharge pipe 610. The control valve 40 and the sand delivery component 70 are both connected to the sand discharge pipe 610.

[0058] The sand discharge pipe 610 is fixed to the bottom of the sand storage tank 310 via a threaded connection, ensuring a secure and airtight connection to prevent sand leakage. The open pipe design allows for smooth sand flow, avoiding blockages. The installation position of the switch valve 620 facilitates manual or remote control of sand discharge, providing flexible operation. The connection between the control valve 40 and the sand delivery component 70 ensures precise control of sand discharge, preventing over-discharge or under-discharge.

[0059] Refer to the attached diagrams in the instruction manual. Figures 1-6As shown, the sand feeding component 70 includes a pneumatic particle conveyor 710 and a sand feeding pipe 720. One end of the pneumatic particle conveyor 710 is connected to the sand discharge pipe 610, and the other end of the pneumatic particle conveyor 710 is connected to the sand feeding pipe 720. The pneumatic particle conveyor 710 is pneumatically connected to the sand discharge switch 220. The sand discharge component 80 is screwed to the other end of the sand feeding pipe 720. The pneumatic particle conveyor 710 includes a conveying pipe 7110, with a sand inlet end 7120 and an air outlet end 7140 at its two ends. The sand inlet end 7120 is connected to the sand discharge pipe 610, and the air outlet end 7140 is connected to the sand feeding pipe 720. The conveying pipe 7110 is also provided with an air inlet 7130, which is pneumatically connected to the sand discharge switch 220 through a pipeline.

[0060] The high-pressure gas enters the sand-adding trolley through the gas source interface pipe 520, and then converges to the control valve 40 through a pipeline. When the operator opens the sand discharge switch 220, the high-pressure gas flows to the air inlet 7130 of the pneumatic particle conveyor 710. As the gas exits through the air outlet 7140 of the pneumatic particle conveyor 710, the flow rate increases and the pressure decreases. A vacuum negative pressure area is formed at the sand inlet 7120 at the other end. The two areas test a pressure difference, thereby generating an adsorption effect that draws in other fluids. Subsequently, atmospheric pressure pushes the sand and gravel together to the air outlet 7140, realizing the transportation of sand and gravel driven by high-pressure gas. This design not only improves the sand delivery efficiency but also reduces the complexity and labor intensity of manual operation. The sand delivery pipe 720 is made of high-strength material to ensure good sealing and durability under the combined action of high-pressure gas and sand and gravel. The sand discharge switch 220 is designed with ease of operation and safety in mind, ensuring that the operator can quickly and safely control the transportation of sand and gravel under any circumstances.

[0061] Refer to the attached diagrams in the instruction manual. Figures 1-6 As shown, the control switch component 20 also includes an information board 230 for identifying information, which is mounted on the top surface of the support frame 110.

[0062] Example 2:

[0063] As one of the optimized structural designs for Example 1, such as Figures 7-9 As shown, the sand discharge component 80 includes a first connecting seat 8110, a first sand discharge pipe 8120, and a first connecting sleeve 8130. The first sand discharge pipe 8120 is connected to the sand delivery pipe 720. The first connecting sleeve 8130 is used to fix the first sand discharge pipe 8120 and the sand delivery pipe 720, and the first connecting sleeve 8130 is fixedly connected to the first connecting seat 8110.

[0064] The first sand outlet pipe 8120 is sequentially fitted with a fixing block 8140, a first filter screen 8160, a clamping frame 8170, and a rotating frame 8180 along the sand outlet direction. The fixing block 8140 is located in the inner cavity of the first connecting sleeve 8130. Each of the four end faces of the fixing block 8140 is provided with a fixing pin 8150. The clamping frame 8170 is fixed to the outside of the first connecting sleeve 8130 by the four fixing pins 8150. The opening diameter of the first filter screen 8160 is the same as the outer diameter of the first connecting sleeve 8130. The first filter screen 8160 abuts against the end face of the first connecting sleeve 8130 and is clamped by the clamping frame 8170. The rotating frame 8180 is fixedly installed on the outside of the first connecting sleeve 8130 by bolts, and the fixed position of the rotating frame 8180 is offset from the fixed position of the clamping frame 8170.

[0065] The first sand outlet pipe 8120 is connected to the sand delivery pipe 720. The first connecting sleeve 8130 is used to fix the first sand outlet pipe 8120 and the sand delivery pipe 720, ensuring a reliable connection between them. The first connecting sleeve 8130 is also fixedly connected to the first connecting seat 8110, further enhancing the stability of the structure. The fixing block 8140 is sleeved on the outside of the first sand outlet pipe 8120, located inside the first connecting sleeve 8130. Each of the four end faces of the fixing block 8140 is provided with a fixing pin 8150. These fixing pins 8150 are used to securely connect the clamping frame 8170. The first filter screen 8160 is used to filter impurities or non-standard particles from particulate materials. Its opening diameter is consistent with the outer diameter of the first connecting sleeve 8130, thus allowing the first filter screen 8160 to fit tightly with the first connecting sleeve 8130, preventing leakage or incomplete filtration of particulate materials. The first filter screen 8160 abuts against the end face of the first connecting sleeve 8130 and is pressed by the clamping frame 8170 to ensure that its fixed position does not shift, while simultaneously achieving efficient filtration. The clamping frame 8170's function is to firmly press the first filter screen 8160 against the end face of the first connecting sleeve 8130, preventing the filter screen from loosening or deforming. The clamping frame 8170 can provide uniform pressure to the filter screen, ensuring consistent filtration effect. The rotating frame 8180 is fixedly installed on the outside of the first connecting sleeve 8130 by bolts. The position of the rotating frame 8180 is offset from that of the clamping frame 8170. The offset design of the fixed position of the rotating frame 8180 from the clamping frame 8170 avoids mutual interference and improves the stability of the overall structure and ease of operation.

[0066] Specifically, the pneumatic particle conveyor 710 feeds sand particles from the sand delivery pipe 720 into the first sand outlet pipe 8120. The first filter screen 8160 filters impurities, preventing larger particles or impurities from being conveyed out with the material, ensuring that only qualified material passes through the sand outlet component 80. The cooperation of various components such as the fixed block 8140, the clamping frame 8170, and the rotating frame 8180 ensures the stability of the sand outlet component 80 and prevents any vibration or pressure changes during material conveying from affecting the normal operation of the equipment.

[0067] It is worth noting that the fixing pins 8150 set on the fixing block 8140 ensure a firm connection of each component during use, avoiding the risk of loosening or component detachment. The first filter screen 8160 not only performs high-efficiency filtration, but also has the same outer diameter as the first connecting sleeve 8130, preventing the possibility of material leakage. At the same time, the clamping frame 8170 ensures the long-term stable operation of the filter screen. The clamping frame 8170 firmly secures the filter screen to the first connecting sleeve 8130, and the fixing pins 8150 ensure the overall structure is firm, preventing loosening under the impact of airflow or particulate materials. The rotating frame 8180 is designed to be offset from the clamping frame 8170, which can avoid mutual interference between the two. At the same time, the rotatable function of the rotating frame 8180 provides convenience for subsequent maintenance, cleaning and other operations, increasing the operability and maintainability of the equipment.

[0068] Example 3:

[0069] This embodiment is a further optimization of the structure and principle basis of Embodiment 1 or Embodiment 2, such as... Figures 10-12 As shown, the sand discharge component 80 includes a second connecting seat 8210, a second sand discharge pipe 8220, and a second connecting sleeve 8230. The second sand discharge pipe 8220 communicates with the sand delivery pipe 720. The second connecting sleeve 8230 is used to fix the second sand discharge pipe 8220 and the sand delivery pipe 720, and the second connecting sleeve 8230 is installed in the inner cavity of the second connecting seat 8210.

[0070] The second sand outlet pipe 8220 is provided with a washer 8240, a sand-adding plate 8250, a second filter screen 8260, and a pressure plate 8270 sequentially sleeved on its exterior along the sand outlet direction. The two end faces of the washer 8240 abut against the second connecting seat 8210 and the sand-adding plate 8250, respectively. The second filter screen 8260 has the same opening shape as the pressure plate 8270 and is located between the sand-adding plate 8250 and the pressure plate 8270. The pressure plate 8270 is screwed and fixed to the sand-adding plate 8250. The end face of the pressure plate 8270 is also connected to a latch 8280, which engages with a hook provided on the second connecting seat 8210.

[0071] The inner cavity of the second connecting seat 8210 is used to install the second connecting sleeve 8230. The second sand outlet pipe 8220, as the main sand outlet channel, is connected to the sand delivery pipe 720 for outputting sand particles. The second connecting sleeve 8230 is used to fix the connection between the second sand outlet pipe 8220 and the sand delivery pipe 720. The gasket 8240 fills the gap to prevent liquid or sand leakage, and also serves as a shock absorber and buffer. Its two end faces abut against the second connecting seat 8210 and the sand filling plate 8250, respectively. The sand filling plate 8250 assists in controlling the sand flow output and can be used with other... The filtration and sealing components work together to ensure effective sand transmission. The second filter screen 8260 is used to filter out unwanted impurities, ensuring that the output sand particles are clean. It is located between the sand feeding plate 8250 and the pressure plate 8270, and plays a filtering role. The pressure plate 8270 is fixed to the sand feeding plate 8250 by screws. The locking buckle 8280 is used to secure the pressure plate 8270 and engages with the hook on the second connecting seat 8210 to enhance the stability of the structure and prevent the components from falling off. The hook is a fixing device on the second connecting seat 8210. It engages with the locking buckle 8280 to ensure the overall fixation of the sand outlet pipe component.

[0072] Specifically, the gasket 8240 ensures a tight seal between the second sand outlet pipe 8220 and the second connecting seat 8210, preventing sand leakage and providing a buffer to reduce wear caused by vibration. The sand feeding plate 8250 is designed to evenly distribute sand particles, avoiding reduced sand feeding efficiency due to uneven sand discharge. The second filter screen 8260 further ensures the purity of the sand particles, preventing impurities from entering the sand feeding system and affecting the sand feeding effect. The pressure plate 8270 is fixed by screws, ensuring the stability and durability of the filter screen. The snap-fit ​​design of the locking buckle 8280 and the hook not only facilitates quick installation and disassembly of the equipment but also enhances the overall structural stability, ensuring that there is no risk of parts falling off during high-speed operation. Through these detailed optimizations, the performance of the entire sand discharge component 80 has been significantly improved, further enhancing the reliability and working efficiency of the automatic sand feeding device.

[0073] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An automatic sanding device for a railway motor train unit comprising a general frame (10), characterized in that: The total frame body (10) comprises a bearing frame (110), a first installation cavity (120), a second installation cavity (130) and a third installation cavity (170) are respectively arranged in the bearing frame (110), the first installation cavity (120) and the second installation cavity (130) are respectively arranged on the left and right of the bearing frame (110), and the third installation cavity (170) is arranged at the upper end of the first installation cavity (120); The first installation cavity (120) is provided with an air pipe winding part (50) for connecting an air source, the third installation cavity (170) is provided with a sand storage part (30), the bottom of the sand storage part (30) is connected with a sand discharge part (60), and the sand discharge part (60) is respectively connected with a control valve (40) and a sand feeding part (70); The top surface of the bearing frame (110) is provided with a control switch part (20), the control switch part (20) comprises a sand adding switch (210) and a sand discharging switch (220), wherein the control valve (40) is electrically connected with the sand adding switch (210), the air pipe winding part (50) and the sand feeding part (70) are pneumatically connected with the sand discharging switch (220), and the outlet end of the sand feeding part (70) is further connected with a sand discharging part (80).

2. The automatic sanding device for a railway motor train set according to claim 1, characterized in that, The total frame body (10) further comprises a first door plate (140), a second door plate (150), a residual sand box (160) and a push hand (180), the first door plate (140) and the second door plate (150) are respectively hinged outside the first installation cavity (120) and the second installation cavity (130), the residual sand box (160) is installed on the inner bottom surface of the first installation cavity (120), the push hand (180) is connected to the bearing frame (110), and the bottom surface of the bearing frame (110) is further provided with a plurality of universal wheels (90).

3. An automatic sanding device for a railway vehicle according to claim 2, characterized in that, The sand storage part (30) comprises a sand storage box (310) and a cover plate (320), the sand storage box (310) is installed in the third installation cavity (170), the bottom of the sand storage box (310) is in an inverted conical shape, the cover plate (320) is hinged to the top surface side of the sand storage box (310), and the sand discharge part (60) is communicated with the bottom of the sand storage box (310).

4. The automatic sanding device for a railway motor train set according to claim 3, characterized in that, The air pipe winding part (50) comprises a winding device (510) and an air source interface pipe (520), the air source interface pipe (520) is longer than 15 m and is wound in the winding device (510), one end of the air source interface pipe (520) is pneumatically connected with the sand discharging switch (220), and the other end of the air source interface pipe (520) extends to the outside of the bearing frame (110) and is used for being communicated with an air source.

5. An automatic sanding device for a railway vehicle according to claim 4, characterized in that, The sand discharging part (60) comprises a sand discharging pipe (610) and a switch valve (620), one end of the sand discharging pipe (610) is screwed at the bottom of the sand storage box (310), the other end of the sand discharging pipe (610) is an open pipe, the switch valve (620) is installed at the open pipe of the sand discharging pipe (610), and the control valve (40) and the sand feeding part (70) are both in communication with the sand discharging pipe (610).

6. An automatic sanding device for a railway vehicle according to claim 5, characterized in that, The sand feeding part (70) comprises a pneumatic particle conveyor (710) and a sand feeding pipe (720), one end of the pneumatic particle conveyor (710) is in communication with the sand discharging pipe (610), the other end of the pneumatic particle conveyor (710) is in communication with the sand feeding pipe (720), wherein the pneumatic particle conveyor (710) is pneumatically connected with the sand discharging switch (220), and the sand discharging part (80) is screwed at the other end of the sand feeding pipe (720).

7. An automatic sanding device for a railway vehicle according to claim 6, characterized in that, The pneumatic particle conveyor (710) comprises a conveying pipe (7110), both ends of the conveying pipe (7110) are respectively a sand inlet end (7120) and a gas outlet end (7140), the sand inlet end (7120) is in communication with the sand discharging pipe (610), the gas outlet end (7140) is in communication with the sand feeding pipe (720), and a gas inlet (7130) is further arranged on the conveying pipe (7110), the gas inlet (7130) is pneumatically connected with the sand discharging switch (220) through a pipeline.

8. An automatic sanding device for a railway vehicle according to claim 7, characterized in that, The sand discharging part (80) comprises a first connecting seat (8110), a first sand discharging pipe (8120) and a first connecting sleeve opening (8130), the first sand discharging pipe (8120) is in communication with the sand feeding pipe (720), the first connecting sleeve opening (8130) is used for fixing the first sand discharging pipe (8120) and the sand feeding pipe (720), and the first connecting sleeve opening (8130) is fixedly connected with the first connecting seat (8110); wherein the first sand discharging pipe (8120) is sequentially sleeved with a fixing block (8140), a first filter screen (8160), a pressing frame (8170) and a rotating frame (8180) in the sand discharging direction, the fixing block (8140) is located in the inner cavity of the first connecting sleeve opening (8130), four end faces of the fixing block (8140) are provided with fixing pins (8150), the pressing frame (8170) is fixed outside the first connecting sleeve opening (8130) through the four fixing pins (8150), the first filter screen (8160) has a diameter consistent with the outer diameter of the first connecting sleeve opening (8130), the first filter screen (8160) abuts against the end face of the first connecting sleeve opening (8130) and is pressed by the pressing frame (8170), and the rotating frame (8180) is fixedly installed outside the first connecting sleeve opening (8130) through bolts, and the fixed position of the rotating frame (8180) is staggered with the fixed position of the pressing frame (8170).

9. The automatic sanding device for a railway motor train set according to claim 7, characterized in that, The sand discharging part (80) comprises a second connecting seat (8210), a second sand discharging pipe (8220) and a second connecting sleeve (8230), the second sand discharging pipe (8220) is communicated with the sand feeding pipe (720), the second connecting sleeve (8230) is used for fixing the second sand discharging pipe (8220) and the sand feeding pipe (720), and the second connecting sleeve (8230) is installed in the inner cavity of the second connecting seat (8210); Wherein, the second sand discharging pipe (8220) is sequentially sleeved with a gasket (8240), a sand feeding plate (8250), a second filter screen (8260) and a pressing plate (8270) in the sand discharging direction, the gasket (8240) is in abutment with the second connecting seat (8210) and the sand feeding plate (8250) respectively, the second filter screen (8260) is consistent with the opening shape of the pressing plate (8270), and is located between the sand feeding plate (8250) and the pressing plate (8270), the pressing plate (8270) is screw-fixed with the sand feeding plate (8250), and the end surface of the pressing plate (8270) is further connected with a lock buckle (8280), the lock buckle (8280) is clamped with a hook arranged on the second connecting seat (8210).

10. An automatic sanding device for a railway vehicle according to any one of claims 1-9, characterized in that, The control switch part (20) further comprises an information board (230) for identification information, and the information board (230) is installed on the top surface of the bearing frame (110).

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