A purging system and rail inspection car

Abstract

The application relates to the technical field of cleaning equipment, in particular to a blowing system and a track maintenance vehicle. The blowing system comprises an air supply channel, a fan, a flow divider and a blowing device which are sequentially arranged on the air supply channel; the flow divider is used for shunting the air blown by the fan to the blowing device; the fan, the flow divider and the blowing device are all arranged between the bottom plate of the track maintenance vehicle and the space above the track, and the fan and the blowing device are respectively located on the two sides of the flow divider along the front-rear direction of the track maintenance vehicle. The blowing system provided in the application has the advantages that: on the one hand, the blowing system does not occupy the inner space of the track maintenance vehicle, thereby improving the utilization rate of the inner space of the track maintenance vehicle; on the other hand, the fan, the flow divider and the blowing device are sequentially and spacedly arranged along the front-rear direction of the track maintenance vehicle, thereby greatly reducing the height dimension of the blowing system along the up-down direction, and improving the structural compactness and the part integration of the blowing system.

Description

Technical Field

[0001] This application relates to the field of transportation rail equipment technology, and in particular to a purging system and a rail maintenance vehicle. Background Technology

[0002] Rail transit vehicles, such as urban rail trains and maglev trains, need to run on specific tracks. Therefore, track cleaning and maintenance play a crucial role in the stable operation of rail transit vehicles on the track surface. Since tracks are often exposed to outdoor spaces, pollutants such as ice and snow residue and dust often accumulate or remain on the track surface, posing safety hazards and even rail traffic accidents. Currently, the purging systems used on track maintenance vehicles for cleaning the track surface are often space-consuming, making their installation and layout on the track maintenance vehicle difficult. Summary of the Invention

[0003] In view of this, the present application provides a purging system and a track maintenance vehicle, wherein the purging system occupies little space and has a compact structure.

[0004] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows:

[0005] One embodiment of this application provides a purging system, which includes an air supply channel and a fan, a distributor, and a purging device sequentially arranged on the air supply channel; the distributor is used to divert the air blown out by the fan to the purging device.

[0006] The fan, the diverter, and the purging device are all located between the chassis of the track maintenance vehicle and the track, with the fan and the purging device located on both sides of the diverter along the front-rear direction of the track maintenance vehicle.

[0007] In some implementations, the purging device includes multiple purging nozzles, the distributor includes an air distribution box, the air distribution box has an air inlet and multiple air outlets corresponding one-to-one with the purging nozzles; the air supply channel includes an air inlet pipe and multiple air outlet pipes, the two ends of the air inlet pipe are respectively connected to the fan and the air inlet, and one air outlet pipe is connected to one purging nozzle and one air outlet.

[0008] In some implementations, the ratio of the flow cross-sectional area of ​​the air inlet duct to the sum of the flow cross-sectional areas of any two air outlet ducts is between 0.9 and 1.1.

[0009] In some implementations, the air inlet is located on one side surface of the air distribution box along the left-right direction of the track maintenance vehicle.

[0010] In some embodiments, the air outlet includes a first air outlet and / or a second air outlet, wherein the first air outlet is located on one side surface of the air distribution box along the longitudinal direction of the track maintenance vehicle, and the second air outlet is located on one side surface of the air distribution box along the vertical direction of the track maintenance vehicle.

[0011] In some implementations, the diverter includes multiple dampers corresponding one-to-one with the multiple air outlet pipes. The multiple dampers are all located on the side of the air distribution box away from the fan. The air outlet pipe includes a first guide section connecting the air outlet and a second guide section connecting the purging air head. The first guide section extends along the front-rear direction of the track maintenance vehicle. The dampers are closable and disposed between the first guide section and the second guide section.

[0012] In some implementations, the diverter includes a plurality of control valves, one of which is correspondingly located on one side of the damper along the left-right direction of the track maintenance vehicle, to control the opening and closing of the respective damper.

[0013] In some implementations, the number of dampers is four, and the dampers are arranged in an array along the left-right direction and the up-down direction of the track maintenance vehicle.

[0014] In some embodiments, the purging device includes multiple purging blowers, the blower is located on one side of the track maintenance vehicle in the left-right direction, at least one of the purging blowers is respectively arranged on both sides of the track maintenance vehicle in the left-right direction, and the diverter is located between the purging blowers on both sides of the track maintenance vehicle in the left-right direction.

[0015] In some implementations, the fan is fixedly connected to the lower end of the chassis, the distributor includes a mounting frame and a distribution box, and the purging device includes at least one fixed base; both the mounting frame and the fixed base are fixedly connected to the lower end of the chassis, the distribution box is fixedly connected to the mounting frame, and at least one purging fan head is fixedly connected to the fixed base.

[0016] Another embodiment of this application provides a track maintenance vehicle, including:

[0017] The chassis and the purging system described in any one of the above;

[0018] The distance between the lower surface of the chassis and the upper surface of the track, as well as the span between the two tracks along the left and right directions of the track maintenance vehicle, together define the installation area, and the purging system is installed within the installation area.

[0019] In some embodiments, the spacing is 700mm to 900mm; and / or the span is 1100mm to 1300mm.

[0020] The purging system provided in this embodiment does not occupy the interior space of the rail maintenance vehicle, thus improving the utilization rate of the vehicle's interior space. Furthermore, the fan, diverter, and purging device are arranged sequentially and at intervals along the front-rear direction of the rail maintenance vehicle, significantly reducing the overall vertical height of the purging system. This prevents the purging system from interfering with the track surface, other structural components of the rail maintenance vehicle such as wheels, and other obstacles, improving the system's structural compactness and component integration. Moreover, the diverter is positioned between the fan and the purging device, further maximizing space utilization and reducing the length of the air supply channel. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a track maintenance vehicle in one embodiment of this application;

[0022] Figure 2 for Figure 1 A structural diagram of the structure shown from another perspective;

[0023] Figure 3 This is a schematic diagram of the purging system in one embodiment of this application;

[0024] Figure 4 middle Figure 3 A structural diagram of the structure shown from another perspective;

[0025] Figure 5 for Figure 3 A structural schematic diagram of the structure shown from another perspective;

[0026] Figure 6 for Figure 3 A structural schematic diagram from another perspective of the structure shown;

[0027] Figure 7 for Figure 6 Enlarged view of section A of the structure shown.

[0028] Explanation of reference numerals in the attached figures:

[0029] Purging system 100; fan 1; distributor 2; air distribution box 21; air inlet 21a; air outlet 21b; first air outlet 21ba; second air outlet 21bb; damper 23; control valve 24; mounting bracket 25; elbow 26; purging device 3; purging nozzle 31; connecting end 311; air collecting end 312; first pivot plate 3121; air outlet 312a; fixed seat 32; fixed notch 32a; second pivot plate 321; slide groove 321a; adjusting shaft 33; pivot shaft 34; air supply channel 4; air inlet pipe 41; air outlet pipe 42; first guide section 421; second guide section 422; track maintenance vehicle 900; chassis 91; track a. Detailed Implementation

[0030] It should be noted that the various embodiments / implementations provided in this application can be combined with each other without creating contradictions. The detailed descriptions in the specific embodiments should be understood as explanations of the spirit of this application and should not be regarded as undue limitations on this application.

[0031] In the description of this application, the terms "upper," "lower," "left," "right," "front," and "rear" refer to the orientation or positional relationship based on... Figure 1 and Figure 2 The orientations or positional relationships shown are for illustrative purposes only and do not 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. The terms "first" and "second" merely distinguish different objects and do not indicate any similarity or connection between them.

[0032] One embodiment of this application provides a purging system 100 for cleaning and maintaining tracks. Please refer to [link to relevant documentation]. Figures 1 to 3 The purging system 100 includes an air supply duct 4 and a fan 1, a distributor 2, and a purging device 3 arranged sequentially on the air supply duct 4. The fan 1 provides an air power source for the operation of the purging system 100. The rotation of the fan 1 can convert mechanical energy into the pressure energy and kinetic energy of the gas and transmit the gas out.

[0033] The diverter 2 is used to divert the air blown out by the blower 1 to the purging device 3. Specifically, the purging device 3 is located close to the rail surface. The air introduced into the purging device 3 by the diverter 2 is purged onto the rail a through the purging device 3. The diverter 2 can divide the air from the single inlet air path input by the blower 1 into multiple outlet air paths. The purging device 3 can be equipped with multiple purging nozzles 31. The gas flowing out of the multiple outlet air paths can flow to the multiple purging nozzles 31 of the purging device 3 respectively. The outlets of the multiple purging nozzles 31 can be set at different outlet positions to achieve multi-angle and multi-directional purging of the rail surface.

[0034] Please see Figure 1 The blower 1, the diverter 2, and the purging device 3 are all located between the chassis 91 and the rail of the track maintenance vehicle 900. The blower 1 and the purging device 3 are located on both sides of the diverter 2 along the longitudinal direction of the track maintenance vehicle 900. Specifically, the chassis 91 is located at the bottom of the track maintenance vehicle 900. The space below the chassis 91 and above the rail is the external space of the track maintenance vehicle 900. The blower 1, the diverter 2, and the purging device 3 in the purging system 100 are all located within the external space of the track maintenance vehicle 900.

[0035] The purging system 100 provided in this embodiment does not occupy the interior space of the rail maintenance vehicle 900, thus improving the utilization rate of the interior space. Furthermore, the fan 1, the diverter 2, and the purging device 3 are arranged sequentially and at intervals along the front-rear direction of the rail maintenance vehicle 900, significantly reducing the overall height of the purging system 100 in the vertical direction. This prevents the purging system 100 from interfering with the track surface, other structural components of the rail maintenance vehicle 900 such as wheels, and other obstacles, improving the structural compactness and component integration of the purging system 100. Moreover, the diverter 2 is arranged between the fan 1 and the purging device 3, further maximizing space utilization and reducing the length of the air supply channel 4.

[0036] The arrangement of the blower 1, the diverter 2, and the purging device 3 in the purging system 100 is not limited by the number of tracks. That is to say, whether the purging system 100 of this application is applied to a track maintenance vehicle 900 traveling on a single-track railway or a track maintenance vehicle 900 traveling on a double-track railway, the blower 1, the diverter 2, and the purging device 3 are all located between the chassis 91 of the track maintenance vehicle 900 and the track, and are arranged sequentially at intervals along the front and rear direction of the track maintenance vehicle 900.

[0037] As an example, in one embodiment, please refer to Figure 2The track maintenance vehicle 900 is a track maintenance vehicle that travels on a double-track railway. The purging device 3 includes multiple purging air heads 31. The fan 1 is located on one side of the track maintenance vehicle 900 in the left-right direction. That is, since the chassis 91, which serves as the load-bearing beam, is located on the left or right side of the chassis 91 of the track maintenance vehicle 900, the fan 1 can be directly installed on either the left or right side of the track maintenance vehicle 900. This arrangement allows the fan 1 to be stably and directly installed on the load-bearing beam of the chassis 91, while also facilitating the operation and maintenance of the fan 1 by the operators. At least one purging air head 31 is provided on each side of the track maintenance vehicle 900 in the left-right direction. The diverter 2 is located between the purging air heads 31 on both sides of the track maintenance vehicle 900 in the left-right direction. In other words, at least one purging air head 31 is provided on the left side of the track maintenance vehicle 900 in the left-right direction, and at least one purging air head 31 is also provided on the right side of the track maintenance vehicle 900 in the left-right direction. The blowing heads 31 on the left and right sides correspond to the tracks on both sides of the track maintenance vehicle 900 in the left and right directions, so that the blowing device 3 can simultaneously clean the ice, snow, dust and other pollutants on both sides of the tracks. The diverter 2 is set between the blowing heads 31 on the left and right sides, which can make the length of the pipeline from the diverter 2 to each blowing head 31 shorter, the overall length of the air supply channel 4 shorter, and the structure of the blowing system 100 more compact. For example, the diverter 2 is located in the middle of the left and right sides of the track maintenance vehicle 900, which can make the overall mass distribution of the track maintenance vehicle 900 in the left and right directions more uniform, the overall mass eccentricity in the left and right directions smaller, and the driving reliability higher.

[0038] In one embodiment, please refer to Figures 3 to 6 The purging device 3 includes multiple purging nozzles 31. The structural form of the purging nozzles 31 is not particularly limited. For example, the purging nozzle 31 includes a connecting end 311 and a collecting end 312. One end of the connecting end 311 is connected to the outlet pipe 42, and the other end of the connecting end 311 is connected to the collecting end 312. The connecting end 311 can be a connecting flange pipe joint that connects to the outlet pipe 42. The collecting end 312 is used to collect the gas flowing out from the connecting end 311. The outlet 312a of the collecting end 312 can be circular, rectangular, etc. For example, the collecting end 312 is a gradually narrowing cone shape, and the outlet 312a of the collecting end 312 is set in a narrow, elongated duckbill shape; with this configuration, the gas will gradually increase in force at the gradually narrowing collecting end 312, allowing the purging nozzle 31 to obtain a high airflow force even when operating at a low gas pressure.

[0039] For example, please refer to Figures 3 to 6The distributor 2 includes an air distribution box 21, which has an air inlet 21a and multiple air outlets 21b corresponding to the purge nozzles 31. The air supply channel 4 includes an air inlet pipe 41 and multiple air outlet pipes 42. The number of air inlets 21a corresponds to the number of air inlet pipes 41. The two ends of the air inlet pipe 41 are connected to the ventilator 1 and the air inlet 21a, respectively. The number of air outlets 21b, the number of air outlet pipes 42, and the number of purge nozzles 31 are all in one-to-one correspondence. One air outlet pipe 42 is connected to one purge nozzle 31 and one air outlet 21b. The air distribution box 21 has an air cavity. The gas produced by the blower 1 flows into the air cavity of the air distribution box 21 through the air inlet 21a via the air inlet pipe 41. It is then distributed to multiple air outlet pipes 42 through multiple air outlets 21b. The gas is then guided to the blowing head 31 through the air outlet pipes 42. The air flowing out of the blowing head 31 is used to clean and blow away pollutants such as ice, snow and dust on the track surface.

[0040] The air distribution box 21 can not only distribute the air volume from the air inlet 21a, but also convert some of the dynamic pressure of the gas into static pressure, which plays a role in stabilizing the pressure. Since the wind power loss of static pressure air outlet is smaller, the air power at the air outlet 21b can be increased. At the same time, the reduction of dynamic pressure can also reduce the wind noise of the purging system 100 and reduce the working noise.

[0041] To further conserve space occupied by the purging system 100, in one embodiment, please refer to... Figure 3 and Figure 4 The air inlet 21a is located on one side surface of the air distribution box 21 along the left-right direction of the track maintenance vehicle 900. Specifically, the air distribution box 21 has a rectangular box structure, and the air inlet 21a is located on the side surface of the air distribution box 21 near the fan 1. For example, with Figure 2 and Figure 4 As shown, the fan 1 is located on the left side of the track maintenance vehicle 900 in the left-right direction, and the air inlet 21a is opened on the left side surface of the air distribution box 21. With this arrangement, on the one hand, the air inlet 21a is closer to the fan 1, and the length of the air inlet pipe 41 connecting the fan 1 and the air inlet 21a is shorter; on the other hand, it can shorten the distance between the air distribution box 21 and the fan 1 in the front-back direction of the track maintenance vehicle 900, and the purging system 100 is more compact.

[0042] In one embodiment, please refer to Figure 4 and Figure 6The air outlet 21b includes a first air outlet 21ba and / or a second air outlet 21bb. That is, the air outlet 21b can have only the first air outlet 21ba, only the second air outlet 21bb, or both. The first air outlet 21ba is located on one side surface of the air distribution box 21 along the longitudinal direction of the track maintenance vehicle 900. Specifically, the first air outlet 21ba is located on the side surface of the air distribution box 21 facing away from the fan 1 along the longitudinal direction. This arrangement allows the first air outlet 21ba to be closer to the blowing head 31, thereby shortening the docking length of the air outlet pipe 42 and increasing the overall structural compactness. For example, in one embodiment, the fan 1 is located on the rear side of the air distribution box 21, and the first air outlet 21ba is located on the front surface of the air distribution box 21. The second air outlet 21bb is located on one side surface of the air distribution box 21 along the vertical direction of the track maintenance vehicle 900. Specifically, the second air outlet 21bb can be located on the upper or lower surface of the air distribution box 21.

[0043] In one embodiment, when the purging device 3 only needs to be equipped with two purging nozzles 31, two first air outlets 21ba can be provided on the air distribution box 21. The two first air outlets 21ba are arranged at intervals along the left and right directions of the track maintenance vehicle 900. That is, the two first air outlets 21ba are arranged in a straight line on the front surface of the air distribution box 21 in the left and right directions. With this arrangement, there is no need to arrange air outlets 21b on the upper or lower surface of the air distribution box 21, thus shortening the length of the air distribution box 21 in the front and back directions, and making the overall structural size of the air distribution box 21 smaller.

[0044] In another embodiment, when the purging device 3 only needs to be equipped with two purging nozzles 31, two second air outlets 21bb can also be provided on the air distribution box 21. The two second air outlets 21bb are arranged at intervals along the left and right directions of the track maintenance vehicle 900. That is, the two second air outlets 21bb are arranged in a row on the upper or lower surface of the air distribution box 21 in the left and right directions. With this arrangement, the air outlets 21b do not need to be arranged on the front surface of the air distribution box 21, which can reduce the height dimension of the air distribution box 21 in the vertical direction.

[0045] During the cleaning and snow removal process on both sides of the track, the track surface needs to be dried first before other track maintenance operations can be performed, such as spraying antifreeze on the track surface to prevent secondary icing. Therefore, when the track maintenance vehicle 900 is moving forward, at least one blowing nozzle 31 needs to be set in front of other track maintenance devices along the direction of operation of the track maintenance vehicle 900; and when the track maintenance vehicle 900 is moving backward, at least one blowing nozzle 31 needs to be set in the rear of other track maintenance devices along the direction of operation of the track maintenance vehicle 900. To meet the above requirements, for example, the purging device 3 of this application is provided with four purging nozzles 31 for the track maintenance vehicle 900 traveling on a double track. When the track maintenance vehicle 900 is traveling forward, the two purging nozzles 31 located on both sides of the track and relatively forward work. Similarly, when the track maintenance vehicle 900 is traveling backward, the two purging nozzles 31 located on both sides of the track and relatively backward work, so as to complete the track purging work in advance for subsequent track maintenance device operations.

[0046] Therefore, for a purging device 3 with four purging nozzles 31, four air outlets 21b need to be opened simultaneously on the air distribution box 21 of the distributor 2 to realize the "one inlet and four outlets" function of the distributor 2. To meet the above-mentioned operating conditions, in one embodiment, the air distribution box 21 includes four first air outlets 21ba. Two first air outlets 21ba are arranged in a row along the left and right directions of the track maintenance vehicle 900, and two rows of first air outlets 21ba are arranged along the up and down directions of the track maintenance vehicle 900. That is to say, the four first air outlets 21ba form a 2×2 array arrangement on the front surface of the air distribution box 21. This arrangement allows the air distribution box 21 to greatly shorten the width dimension of the air distribution box 21 in the left and right directions while meeting the air outlet 21b air outlet conditions, compared to the method of the four first air outlets 21ba being arranged in a line.

[0047] In one embodiment, please refer to Figures 3 to 6The air distribution box 21 includes two first air outlets 21ba and two second air outlets 21bb, which are spaced apart along the left-right direction of the track maintenance vehicle 900. That is, with the air distribution box 21 having four air outlets 21b, the two first air outlets 21ba and the two second air outlets 21bb are respectively located on one side surface of the air distribution box 21 in different directions. This arrangement has two advantages: firstly, only two first air outlets 21ba and two second air outlets 21bb are spaced apart along the left-right direction of the track maintenance vehicle 900, thus occupying a smaller width dimension of the air distribution box 21; secondly, the two first air outlets 21ba are located on the front surface of the air distribution box 21 along the left-right direction of the track maintenance vehicle 900. The two second air outlets 21bb are arranged in a single row on the upper or lower surface of the air distribution box 21, which can further reduce the height of the air distribution box 21 along the vertical direction of the track maintenance vehicle 900. The air distribution box 21 has a smaller space and the overall structure of the distributor 2 is more compact. On the other hand, the two first air outlets 21ba and the two second air outlets 21bb are arranged in a single line, without overlapping, which makes it convenient for operators to connect and connect the air outlet pipe 42, effectively improving assembly efficiency.

[0048] In one embodiment, please refer to Figures 3 to 6 The distributor 2 includes multiple dampers 23 corresponding to multiple air outlet pipes 42. All dampers 23 are located on the side of the distribution box 21 away from the fan 1. For example, the fan 1 is located behind the distribution box 21, and the dampers 23 are located in front of the distribution box 21. The air outlet pipe 42 includes a first guide section 421 connecting to the air outlet 21b and a second guide section 422 connecting to the purge nozzle 31. The first guide section 421 extends along the front-rear direction of the track maintenance vehicle 900. The dampers 23 are closable and positioned between the first guide section 421 and the second guide section 422. Specifically, the dampers 23 are used to connect or disconnect the air outlet pipes 42. When the dampers 23 are open, the first guide section 421 and the second guide section 422 are connected; when the dampers 23 are closed, the first guide section 421 and the second guide section 422 are separated by the dampers 23.

[0049] As an example, in one embodiment, please refer to Figures 4 to 6 The first guide section 421 is directly connected to the first air outlet 21ba and the damper 23 at both ends along the front-to-back direction. With this arrangement, the positions of the first air outlet 21ba, the first guide section 421, and the damper 23 are in a straight line along the front-to-back direction, and the diverter 2 occupies less space along the left-to-right and up-to-down directions of the track maintenance vehicle 900.

[0050] As an example, in one embodiment, please refer to Figures 3 to 6The diverter 2 includes an elbow 26, with its two ends respectively connected to the first guide section 421 and the second air outlet 21bb. Specifically, the elbow 26 is a 90-degree elbow, meaning that the angle between the openings at both ends of the elbow 26 is 90 degrees. The elbow 26 is used to change the gas flow direction, thereby guiding the gas flowing out of the second air outlet 21bb in the vertical direction to the first guide section 421 extending in the front-back direction.

[0051] In one embodiment, please refer to Figure 3 and Figure 5 For a purging device 3 with four purging nozzles 31, there are four dampers 23, which are arranged in an array along the left-right and up-down directions of the track maintenance vehicle 900. The array arrangement allows the four dampers 23 to be more compact and does not excessively occupy the width dimension along the left-right direction or the height dimension along the up-down direction of the track maintenance vehicle 900.

[0052] As an example, in one embodiment, please refer to Figure 3 and Figure 6 Two second air outlets 21bb are arranged at intervals on the upper surface of the air distribution box 21 along the left and right directions of the track maintenance vehicle 900, and two first air outlets 21ba are arranged at intervals on the front surface of the air distribution box 21 along the left and right directions of the track maintenance vehicle 900. Two second air outlets 21bb located on the upper surface of the air distribution box 21 are connected to two first guide sections 421 via two bends 26. Two first air outlets 21ba located on the front surface of the air distribution box 21 are directly connected to two first guide sections 421. The first guide sections 421 connected to the first air outlets 21ba form a first row along the left and right direction of the track maintenance vehicle 900. The first guide sections 421 connected to the second air outlets 21bb form a second row along the left and right direction of the track maintenance vehicle 900. The first row is located below the second row. The four first guide sections 421 form a 2×2 array arrangement on the projection surface along the front and rear direction of the track maintenance vehicle 900. Four air dampers 23 are respectively connected to the rear end of the four first guide sections 421.

[0053] In one embodiment, please refer to Figures 3 to 6 The diverter 2 includes multiple control valves 24, each control valve 24 being correspondingly located on one side of a damper 23 along the left-right direction of the track maintenance vehicle 900, to control the opening and closing of its respective damper 23. That is, the control valves 24 can be correspondingly located on the left or right side of the damper 23 along the track maintenance vehicle 900 to avoid occupying space along the vertical direction of the track maintenance vehicle 900. For example, please refer to [reference needed]. Figure 5Four dampers 23 are arranged in an array along the left-right and up-down directions of the track maintenance vehicle 900. The two control valves 24 connected to the two dampers 23 that are slightly to the left of the track maintenance vehicle 900 in the left-right direction are arranged on the left side of each of the two dampers 23. The two control valves 24 connected to the two dampers 23 that are slightly to the right of the track maintenance vehicle 900 in the left-right direction are arranged on the right side of each of the two dampers 23. This arrangement can make full use of the space along the left-right direction of the track maintenance vehicle 900, without increasing the space occupied in the up-down direction.

[0054] Control valve 24 includes, but is not limited to, electromagnetic switch valves. There are four control valves 24, which can be used to rationally control the actual running direction of the track maintenance vehicle 900.

[0055] For the track maintenance vehicle 900 traveling on double-track tracks, during its forward or backward movement, only one of the two purging nozzles 31 located on each side of the track needs to be activated to perform purging work on both sides of the track. Therefore, in one embodiment, the ratio of the flow cross-sectional area of ​​the inlet pipe 41 to the sum of the flow cross-sectional areas of any two outlet pipes 42 is between 0.9 and 1.1. For example, the ratio can be 0.9, 1.0, and 1.1, etc. That is to say, the air intake of the inlet pipe 41 is approximately equal to the air output of any two outlet pipes 42. With this configuration, the purging system 100 has a better air volume ratio when applied to double-track operations, with low air loss and high utilization rate.

[0056] In one embodiment, please refer to Figure 1 and Figure 3 The fan 1 is fixedly connected to the lower end of the chassis 91. Specifically, the fixed connection between the fan 1 and the chassis 91 includes, but is not limited to, bolt connection, welding, etc. For example, the upper end of the fan 1 is provided with four fixed supports, and the upper end of the fan 1 is connected to the chassis 91 by bolts through the fixed supports. The distributor 2 includes a mounting frame 25, and the purging device 3 includes at least one fixed seat 32; both the mounting frame 25 and the fixed seat 32 are fixedly connected to the lower end of the chassis 91, the air distribution box 21 is fixedly connected to the mounting frame 25, and at least one purging head 31 is fixedly connected to the fixed seat 32. For example, taking a purging device 3 with four purging heads 31 as an example, please refer to [link to relevant documentation]. Figure 3 The mounting frame 25 is a hollow rectangular frame structure. The air distribution box 21 is fixedly connected to the rectangular frame structure of the mounting frame 25 by bolts. The four air doors 23 are all fixedly connected to the outside of the front side plate of the mounting frame 25 by bolts. Two fixed seats 32 are respectively set at the left and right ends of the track maintenance vehicle 900. Each fixed seat 32 is equipped with two blowing air heads 31 facing forward and backward.

[0057] Mounting bracket 25 is used to fix and constrain the relative position of the diverter 2 on the track maintenance vehicle 900 relative to the fan 1 and the purging device 3. On the other hand, it can fix and constrain the relative position of the air distribution box 21 and the damper 23. Meanwhile, the air distribution box 21 is fixedly installed in the mounting bracket 25, which can protect the air distribution box 21 from being bumped to a certain extent.

[0058] In one embodiment, please refer to Figures 3 to 6 The mounting base 32 has at least one fixing notch 32a opening in the front-to-back direction, and the connecting end 311 of the purge nozzle 31 passes through the fixing notch 32a. The fixing notch 32a facilitates the assembly of the purge nozzle 31, and the location of the purge nozzle 31 within the fixing notch 32a reduces the size of the purge device 3 in the front-to-back direction along the track maintenance vehicle 900, making the overall purge device 3 more compact. Specifically, taking a purge device 3 with four purge nozzles 31 as an example, two mounting bases 32 are respectively provided at the left and right ends of the track maintenance vehicle 900, and each of the two mounting bases 32 is provided with a fixing notch 32a opening forward and a fixing notch 32a opening backward. The connecting ends 311 of the four purge nozzles 31 pass through the four fixing notches 32a respectively.

[0059] In one embodiment, the projection of the air outlet direction of the blowing nozzle 31 onto the horizontal plane faces the inner area between the two tracks a along the left and right directions, and the angle between the blowing nozzle 31 and the left and right directions of the track maintenance vehicle 900 is an acute angle. This configuration allows the blowing nozzle 31 to blow away ice, snow, dust, and other contaminants from the track surface towards the inner area between the two tracks a during operation, avoiding potential safety hazards caused by contaminants being blown outside the tracks a, such as splashing contaminants and injuring personnel and equipment in the surrounding area. Specifically, in one embodiment, please refer to... Figure 4 Four purge nozzles 31 are respectively located on the left front side, left rear side, right front side and right rear side of the purge device 3; the projection of the air outlet direction of the purge nozzle 31 on the horizontal plane faces the right front, the projection of the air outlet direction of the purge nozzle 31 on the horizontal plane faces the left front, the projection of the air outlet direction of the purge nozzle 31 on the horizontal plane faces the right rear, and the projection of the air outlet direction of the purge nozzle 31 on the horizontal plane faces the left rear.

[0060] In one embodiment, please refer to Figure 7The purging device 3 includes an adjusting shaft 33 and a pivot shaft 34. The purging head 31 is rotatably pivotally connected to the fixed base 32 via the pivot shaft 34. The fixed base 32 forms a circumferentially extending groove 321a around the pivot shaft 34. The purging head 31 forms a connecting hole. The adjusting shaft 33 passes through the connecting hole and the groove 321a. The adjusting shaft 33 can slide along the extension direction of the groove 321a to drive the purging head 31 to rotate relative to the fixed base 32 around the pivot shaft 34. For example, in one embodiment, the adjusting shaft 33 is a bolt, the pivot shaft 34 is a pin, the air outlet 312a of the air collecting end 312 of the blower head 31 is a long rectangular opening structure, the pivot shaft 34 is parallel to the length direction of the air outlet 312a, the end of the air collecting end 312 away from the air outlet 312a forms a first pivot plate 3121 with a connecting hole, the connecting hole is a threaded hole, the lower end of the fixed seat 32 forms a second pivot plate 321 with a sliding groove 321a, the first pivot plate 3121 and the second pivot plate 321 are pivotally connected by the pivot shaft 34, the adjusting shaft 33 passes through the connecting hole and the sliding groove 321a, the adjusting shaft 33 is threadedly connected to the connecting hole, tightening or loosening the adjusting shaft 33 to adjust or fix the preset position of the blower head 31 relative to the fixed seat 32.

[0061] In other words, when the adjusting shaft 33 is a bolt, tightening or loosening the bolt can adjust the tightness between the first pivot plate 3121 and the second pivot plate 321. When the bolt is loose, the frictional resistance between the first pivot plate 3121 and the second pivot plate 321 is small or non-existent, and the adjusting shaft 33 can slide within the slide groove 321a. The blowing head 31 can rotate relative to the fixed seat 32 around the pivot shaft 34 to adjust the preset position of the blowing head 31 relative to the fixed seat 32. When the bolt is tightened, the threaded engagement between the bolt shank and the connecting hole clamps the second pivot plate 321 axially between the first pivot plate 3121 and the bolt head, increasing the frictional resistance between the first pivot plate 3121 and the second pivot plate 321. The blowing head 31 is less likely to rotate relative to the fixed seat 32, and the blowing head 31 can be fixed in the preset position relative to the fixed seat 32.

[0062] The purging device 3 in this embodiment achieves rotation between the purging head 31 and the fixed base 32 by setting a pivot shaft 34, and slides within a slide groove 321a by setting an adjustment shaft 33. The adjustment shaft 33 is threadedly connected to a connecting hole, allowing for adjustment and fixation of the purging head 31 relative to the fixed base 32. This facilitates the purging device 3's adaptability to purging operations with different track specifications, improving the versatility of the purging system 100. Furthermore, the fixing and adjustment method of the purging head 31 is simple in structure, with few parts; adjustment and fixation of the purging head 31 can be achieved simply by adjusting the adjustment shaft 33, reducing the operational difficulty for operators.

[0063] Another embodiment of this application provides a track maintenance vehicle 900, including a chassis 91 and a purging system 100 as described in any embodiment of this application. The chassis 91 is located at the bottom of the track maintenance vehicle 900, and the purging system 100 is disposed on the lower surface of the chassis 91. When the purging system 100 is in operation, it can blow away ice and snow residue, dust and other pollutants on the track surface located below the track maintenance vehicle 900, thereby ensuring that the rail transit vehicle can run stably on the track.

[0064] Specifically, the distance between the lower surface of the chassis 91 and the upper surface of the track a, as well as the span between the two tracks in the left-right direction of the track maintenance vehicle 900, together define the installation area, and the purging system 100 is installed within the installation area. That is to say, the track maintenance vehicle 900 of this application is applied to a double-track railway. To ensure that the purging system 100 does not interfere with the track surface, other structural components of the track maintenance vehicle 900 such as wheels, or other obstacles during operation, the vertical dimension of the purging system 100 will not exceed the distance between the lower surface of the chassis 91 and the upper surface of the track a, ensuring that the purging system 100 does not drag or scrape the surface of the track a. Simultaneously, the horizontal dimension of the purging system 100 will not be wider than the span between the two tracks a, ensuring that the purging system 100 is always positioned between the two tracks a. During the movement of the track maintenance vehicle 900, this avoids the purging system 100 being too large in the left-right direction and scraping against gravel or obstacles located outside the two tracks, thereby reducing safety hazards during the movement of the track maintenance vehicle 900.

[0065] Therefore, the purging system 100 of this application, through reasonable spatial arrangement, greatly improves the structural compactness and component integration of the purging system 100, so that all structural components of the purging system 100 are simultaneously arranged within the aforementioned installation area, which has a limited height in the vertical direction and a limited width in the horizontal direction. This arrangement does not occupy the interior space of the rail maintenance vehicle 900, thus improving the utilization rate of the interior space of the rail maintenance vehicle 900; it also reduces safety hazards during the operation of the rail maintenance vehicle 900 and improves the reliability of the purging system 100 operation.

[0066] For example, in one embodiment, the distance between the lower surface of the chassis 91 and the upper surface of the track a is 700mm to 900mm. That is, the distance between the lower surface of the chassis 91 and the upper surface of the track a is very small. By reasonably arranging the fan 1, the diverter 2 and the purging device 3, the purging system 100 can significantly reduce its height in the vertical direction, so that the structural dimensions of the purging system 100 in the vertical direction of the track maintenance vehicle 900 can be adapted and accommodated within a height space of 700mm to 900mm.

[0067] For example, in one embodiment, the span between the two rails a in the left-right direction along the track maintenance vehicle 900 is 1100mm to 1300mm. That is to say, by reasonably arranging the blower 1, the diverter 2 and the blower device 3, the purging system 100 can significantly reduce its width in the left-right direction, so that the purging system 100 can be adapted to be accommodated in a width space of 1100mm to 1300mm.

[0068] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A track maintenance vehicle, characterized in that, Including the chassis and purging system; The distance between the lower surface of the chassis and the upper surface of the track, as well as the span between the two tracks along the left and right directions of the track maintenance vehicle, together define the installation area, and the purging system is set in the installation area; The purging system includes an air supply duct and a fan, a distributor, and a purging device arranged sequentially on the air supply duct; the distributor is used to divert the air blown out by the fan to the purging device. The fan, the diverter, and the purging device are all located between the chassis of the track maintenance vehicle and the track, with the fan and the purging device located on both sides of the diverter along the front-rear direction of the track maintenance vehicle. The purging device includes multiple purging air heads. The fan is located on one side of the track maintenance vehicle in the left-right direction. The fan is installed on the load-bearing beam of the chassis. At least one purging air head is provided on each side of the track maintenance vehicle in the left-right direction. The diverter is located between the purging air heads on both sides of the track maintenance vehicle in the left-right direction.

2. The track maintenance vehicle according to claim 1, characterized in that, The distributor includes an air distribution box, which has an air inlet and a plurality of air outlets corresponding one-to-one with the purge air head; the air supply channel includes an air inlet pipe and a plurality of air outlet pipes, the two ends of the air inlet pipe being connected to the fan and the air inlet respectively, and one air outlet pipe being connected to one purge air head and one air outlet.

3. The track maintenance vehicle according to claim 2, characterized in that, The ratio of the flow cross-sectional area of ​​the air inlet duct to the sum of the flow cross-sectional areas of any two air outlet ducts is between 0.9 and 1.

1.

4. The track maintenance vehicle according to claim 2, characterized in that, The air inlet is located on one side surface of the air distribution box along the left-right direction of the track maintenance vehicle.

5. The track maintenance vehicle according to claim 2, characterized in that, The air outlet includes a first air outlet and / or a second air outlet. The first air outlet is located on one side surface of the air distribution box along the front-rear direction of the track maintenance vehicle, and the second air outlet is located on one side surface of the air distribution box along the vertical direction of the track maintenance vehicle.

6. The track maintenance vehicle according to claim 2, characterized in that, The diverter includes multiple dampers corresponding to the multiple air outlet pipes. The multiple dampers are all located on the side of the air distribution box away from the fan. The air outlet pipe includes a first guide section connecting the air outlet and a second guide section connecting the purging air head. The first guide section extends along the front-rear direction of the track maintenance vehicle. The dampers are closable and disposed between the first guide section and the second guide section.

7. The track maintenance vehicle according to claim 6, characterized in that, The diverter includes multiple control valves, one of which is correspondingly located on one side of the damper along the left-right direction of the track maintenance vehicle, to control the opening and closing of each damper.

8. The track maintenance vehicle according to claim 6, characterized in that, The number of dampers is four, and the dampers are arranged in an array along the left-right direction and the up-down direction of the track maintenance vehicle.

9. The track maintenance vehicle according to claim 1, characterized in that, The fan is fixedly connected to the lower end of the chassis. The distributor includes a mounting frame and a distribution box. The purging device includes at least one fixed seat. The mounting frame and the fixed seat are both fixedly connected to the lower end of the chassis. The distribution box is fixedly connected to the mounting frame. At least one purging fan head is fixedly connected to the fixed seat.

10. The track maintenance vehicle according to claim 1, characterized in that, The spacing is 700mm~900mm; and / or the span is 1100mm~1300mm.

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