Inspection vehicle air inlet system

Abstract

The utility model relates to the technical field of railway inspection vehicles, in particular to an air inlet system of an inspection vehicle, which comprises a vehicle body, air filters arranged on the left portion and the right portion of the vehicle body, and a left filtering mechanism and a right filtering mechanism which are used for filtering dust in air entering the air filters. The air filter is reasonable and compact in structure, the filter pipe and the pre-filter are fixed conveniently through the installation shell, the situation that dust-containing air enters other parts of a vehicle body and then damages the parts can be avoided, the installation shell and the air filter are disassembled and assembled conveniently through the air inlet box, the pre-filter is maintained regularly through the air inlet window, and the installation efficiency is improved. The prefilter can improve the filtering capacity of an air filtering system, effectively filter sand and dust in air, effectively avoid the phenomenon that an inspection vehicle cannot run due to blockage of air filter elements of a diesel engine and an air compressor, reduce the fault maintenance cost of the diesel engine and the air compressor, prolong the service life of parts such as a diesel engine piston, a piston ring, a crankshaft and a cylinder body, and improve the service life of the inspection vehicle. Safe and high-speed operation of the inspection vehicle is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of railway inspection vehicles and is an air intake system for the inspection vehicle. Background Art

[0002] The Northwest region is affected by its unique geographical environment and climate. It has an arid climate with little rain and strong winds and sandstorms all year round. The central part of the basin is mostly desert terrain, and scattered oases are formed on the edge of the basin due to the melting of mountain snow. The southern Xinjiang region has severe sandstorms in spring and autumn, and the northern Xinjiang region has strong winds and snow in winter. Some areas have extreme climates with wind and snow.

[0003] The railway lines under the company's jurisdiction primarily run along the edges of basins and mountain ranges, subject to frequent sandstorms year-round. They are primarily divided into the Southern Xinjiang, Northern Xinjiang, and Eastern Xinjiang railway areas. In the Southern Xinjiang area, many trunk lines are located on the southern edge of the Taklamakan Desert; in the Eastern Xinjiang area, the Lanzhou-Xinjiang Railway lies downwind of Gansu's World Wind Reservoir, and the Haruo Railway is situated at the easternmost edge of the Taklamakan Desert; in the Northern Xinjiang area, the Altay-Zhundong Railway lies on the northern edge of the Gurbantunggut Desert. Severe sandstorms significantly impact the operation of rolling stock, necessitating regular sand clearing to ensure safe operation.

[0004] Railway inspection vehicles use various sensors installed on the vehicle to detect and measure railway lines, power supply systems, and communication systems. The data is then transmitted to the vehicle's computer (server) for processing, ultimately generating the test results and implementing appropriate measures. Railway inspection vehicles are crucial for railway transportation safety, enabling them to promptly identify and resolve issues with railway lines, power supply systems, and communication systems, ensuring safe and smooth rail transportation. Furthermore, railway inspection vehicles can reduce the likelihood of train delays and accidents caused by line problems, thereby improving the efficiency and safety of rail transportation.

[0005] The company's current inspection vehicle is the GX-160 comprehensive inspection vehicle, which is mainly used for measuring the geometric dimensions of railway lines and the outline dimensions of railway limits. The whole machine is powered by two sets of power transmission units with the same structure, and the power is output by dual machines working simultaneously. The maximum operating speed is 160km / h. It is equipped with two TAD-1643VEB diesel engines produced by Sweden's VOLVO and a TACN-22-3543 hydraulic transmission box produced by Niigata NICO. The rated power of the whole machine is 565kw / 1900r / min×2=1130kw, and the maximum torque is 3230N.m. The intake method is supercharging and air-to-air intercooling. A plate air filter is installed. The air outside the vehicle body is filtered through the plate filter, enters the diesel engine air filter element for further filtration, and then enters the diesel engine cylinder to work and output power. When the inspection vehicle leaves the factory, a mounting base is welded on the outside of the vehicle body and a plate filter is installed on each side wall. It adopts a galvanized iron frame, a steel mesh to support the filter cotton, and a tensile support form. It is mainly used to filter sand and tiny dust in the compressed air entering the diesel engine and air compressor filter, so that the diesel engine and air compressor can work normally.

[0006] However, when the inspection vehicle is running in the northwest region, the plate filter is limited in filtering sand and dust, and cannot effectively filter sand and dust in the air, resulting in poor filtering effect. The following faults may occur:

[0007] When the two 16L high-power supercharged diesel engines and the auxiliary air compressors of the inspection vehicle's power system are operating, the intake system will inhale a large amount of powdered fine sand on both sides of the railway line in the summer, a large amount of accumulated snow in the winter, and a large amount of catkins in the spring and autumn. This will cause the air filters of the diesel engine and air compressor to become clogged, resulting in a serious drop in diesel engine power. At the same time, it will cause the air compressor to malfunction, leading to early wear of key components such as the pistons, piston rings, crankshafts, and cylinder liners of the diesel engine and air compressor, seriously shortening the service life of the diesel engine. In 2022, the inspection vehicle was operating on the Heruo Line. Due to the blockage of the air filter of the air compressor, the air compressor had no compressed air output, the total air cylinder pressure of the inspection vehicle was less than 400kpa, and the brake system issued a protection command. The inspection vehicle was unable to move and was forced to request locomotive rescue, affecting the operation of two passenger trains and five freight trains, seriously disrupting the normal transportation order of the railway, and causing extremely adverse effects. Summary of the Invention

[0008] The utility model provides an air intake system for an inspection vehicle, which overcomes the above-mentioned deficiencies of the prior art and can effectively solve the problem that the air intake system of the prior inspection vehicle is easily clogged when working in the northwest region, causing the inspection vehicle to be unable to operate normally.

[0009] The technical solution of the utility model is achieved through the following measures: an air intake system for an inspection vehicle, including a vehicle body, air filters are provided on the left and right parts of the vehicle body, and also includes a left filter mechanism and a right filter mechanism for filtering dust in the air entering the air filter. The right filter mechanism includes a mounting shell, a support plate, an air intake box, a pre-filter and an air intake window. A mounting shell with an opening to the right is provided on the right side of the vehicle body corresponding to the position of the air filter, an air intake window is provided on the inside of the right part of the mounting shell, an air intake box is fixedly installed on the lower side of the mounting shell, and air filters on the left and right sides of the air intake box are provided. An intake pipe is fixedly connected between the upper ends of the air filters, and air intake ports that are connected to each other are provided on the inner side of the upper part of the air intake box and the inner side of the lower part of the mounting shell. A support plate with a left part tilted upward relative to the right part is provided on the inner side of the lower part of the mounting shell. Several mounting through holes are provided at intervals between the front and rear sides of the lower side of the support plate. A filter tube with an upper end located on the inner side of the upper part of the mounting shell is sealed and fixedly installed in each mounting through hole. A pre-filter is removably and fixedly installed on the upper end of each filter tube. The left filtering mechanism has the same structure as the right filtering mechanism. The upper end of the left air filter is fixedly connected to the corresponding position of the left filtering mechanism.

[0010] The following are further optimizations and / or improvements to the above-mentioned utility model technical solution:

[0011] The left inner wall of the air intake box may be in a V-shape with an opening to the right, and the upper end of the right air intake pipe is fixedly connected to the left side of the lower part of the right air intake box.

[0012] The above-mentioned right filtering mechanism may also include a dust box. A dust box with an upward opening is fixedly installed on the lower side of the air intake box. The dust box is in the shape of a prism that is wide at the top and narrow at the bottom. A dust collecting hole that passes through the upper and lower parts is provided on the lower side of the air intake box corresponding to the upper side of the dust box. A dust exhaust pipe is fixedly connected to the center of the lower side of the dust box, and a dust exhaust valve is detachably fixedly installed on the lower end of the dust exhaust pipe.

[0013] The upper side of the support plate can be provided with three mounting holes at intervals in front and back. The upper ends of the front and rear filter tubes can be detachably fixed with connecting short tubes, and the upper ends of the front and rear connecting short tubes and the upper end of the middle filter tube are fixedly installed with pre-filters.

[0014] The upper end of the filter tube can be detachably fixedly installed with the lower end of the connecting short tube through a flange connection.

[0015] The above-mentioned right filtering mechanism may also include a buffer pad, a lock and a hydraulic push rod. A buffer pad is fixedly installed on the inner side of the right part of the mounting shell, the upper left side of the air intake window is hingedly installed with the inner side of the upper part of the mounting shell, and a lock is provided between the lower right side of the air intake window and the inner side of the lower part of the mounting shell. Two hydraulic push rods are provided at front and rear intervals between the lower right side of the air intake window and the inner side of the lower part of the mounting shell at the position above the lock.

[0016] The utility model has a reasonable and compact structure. The setting of the mounting shell is convenient for fixing the filter tube and the pre-filter, and can also prevent the dust-containing air from entering other parts of the vehicle body and damaging the parts. The setting of the air intake box is convenient for disassembly and assembly between the mounting shell and the air filter. The setting of the air intake window is convenient for regular maintenance of the pre-filter. The setting of the pre-filter can improve the filtering capacity of the air filtration system, effectively filter the sand and dust in the air, and can effectively prevent the phenomenon that the inspection vehicle cannot run due to clogging of the air filter element of the diesel engine and the air compressor, reduce the maintenance cost of the diesel engine and the air compressor, extend the service life of the diesel engine piston, piston ring, crankshaft, cylinder body and other parts, and ensure the safe and high-speed operation of the inspection vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attachment Figure 1 It is a schematic diagram of the main structure of embodiments one to six of the present invention.

[0018] Attachment Figure 2 It is a right side structural schematic diagram of embodiments one to six of the present invention.

[0019] Attachment Figure 3 It is a schematic diagram of the top view and cross-section structure of embodiments one to six of the present invention.

[0020] Attachment Figure 4 This is a schematic diagram of the main cross-sectional structure of the right filtering mechanism in Examples 1 to 6 of the present invention.

[0021] Attachment Figure 5 This is a schematic structural diagram of the right side of the right filter mechanism in Examples 1 to 6 of the present invention with the air intake window removed.

[0022] Attachment Figure 6 It is a schematic diagram of the top cross-sectional structure of the right filtering mechanism in Examples 1 to 6 of the present invention.

[0023] The codes in the accompanying drawings are: 1 for the vehicle body, 2 for the air filter, 3 for the left filter mechanism, 4 for the mounting shell, 5 for the support plate, 6 for the air intake window, 7 for the air intake box, 8 for the air intake pipe, 9 for the filter pipe, 10 for the pre-filter, 11 for the dust collection box, 12 for the dust exhaust pipe, 13 for the dust exhaust valve, 14 for the connecting short pipe, 15 for the buffer pad, 16 for the hydraulic push rod, and 17 for the lock. DETAILED DESCRIPTION

[0024] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.

[0025] In this utility model, for the convenience of description, the relative position relationship of each component is described based on the Figure 1 The positional relationships of front, back, top, bottom, left, and right are described in the layout of the manual. Figure 1 The layout direction is determined by the

[0026] The present invention will be further described below in conjunction with the embodiments and accompanying drawings:

[0027] Example 1: As shown in the attached Figures 1 to 6 As shown, the air intake system of the inspection vehicle includes a vehicle body 1, and air filters 2 are provided on the left and right parts of the vehicle body 1. It also includes a left filtering mechanism 3 and a right filtering mechanism for filtering dust in the air entering the air filter 2. The right filtering mechanism includes a mounting shell 4, a support plate 5, an air intake box 7, a pre-filter 10 and an air intake window 6. A mounting shell 4 with an opening to the right is provided on the right side of the vehicle body 1 corresponding to the position of the air filter 2. An air intake window 6 is provided on the inside of the right part of the mounting shell 4. An air intake box 7 is fixedly installed on the lower side of the mounting shell 4. A filter element is fixed between the left side of the air intake box 7 and the upper end of the air filter 2 on the right. It is connected with an air intake pipe 8, and the inner side of the upper part of the air intake box 7 and the inner side of the lower part of the mounting shell 4 are provided with air intake ports that are connected to each other. The inner side of the lower part of the mounting shell 4 is provided with a support plate 5 with the left part tilted upward relative to the right part. A number of mounting through holes are provided at intervals between the front and rear of the lower side of the support plate 5. A filter tube 9 with the upper end located on the inner side of the upper part of the mounting shell 4 is sealed and fixedly installed in each mounting through hole. A pre-filter 10 is removably and fixedly installed on the upper end of each filter tube 9. The left filter mechanism 3 has the same structure as the right filter mechanism. The upper end of the left air filter 2 is fixedly connected to the corresponding position of the left filter mechanism 3.

[0028] As required, the pre-filter 10 is a conventionally known technology. In this embodiment, the pre-filter 10 is a conventionally known cyclone dust filter, such as the Donaldson TopSpin with an inline separator. This filter performs primary filtration of most dust particles in the air. The sand outlet of the pre-filter 10 faces rightward. During use, the mounting housing 4 facilitates the securement of the filter tube 9 and pre-filter 10 and prevents dust-laden air from entering other parts of the vehicle body 1 and damaging them. The air intake box 7 facilitates assembly and disassembly between the mounting housing 4 and the air filter 2. The air intake window 6 facilitates regular maintenance of the pre-filter 10. The pre-filter 10 improves the filtration capacity of the air filtration system, effectively filtering sand and dust from the air. This effectively prevents the diesel engine and air compressor air filter from clogging, which can cause the inspection vehicle to cease operation. This reduces the cost of repairing diesel engine and air compressor failures, extends the service life of diesel engine components such as pistons, piston rings, crankshafts, and cylinder blocks, and ensures safe and high-speed operation of the inspection vehicle.

[0029] The above inspection vehicle air intake system can be further optimized and / or improved according to actual needs:

[0030] Example 2: As an optimization of the above example, as shown in the attached Figure 4As shown, the inner wall of the left side of the air intake box 7 is in a V shape with an opening to the right, and the upper end of the right air intake pipe 8 is fixedly connected to the lower left side of the right air intake box 7.

[0031] According to requirements, the central axis of the upper portion of the air intake pipe 8 is perpendicular to the lower inner wall of the air intake box 7. During use, through such an arrangement, most of the dust is filtered out after the air passes through the pre-filter 10, and the air containing a small amount of dust enters the air intake box 7 and falls to the lower portion of the air intake box 7 under the action of gravity. The left inner wall of the air intake box 7 is in a V-shape with an opening to the right, which makes it easier to separate the air containing a small amount of dust from the dust, and the clean air enters the air filter 2 after passing through the air intake pipe 8, which can improve the dust filtering efficiency. The left inner wall of the air intake box 7 is in a V-shape with an opening to the right, which also facilitates the installation of the air intake pipe 8 and effectively utilizes the space of the vehicle body 1 between the air filter 2 and the mounting shell.

[0032] Example 3: As an optimization of the above embodiment, as shown in the attached Figure 4 、 5 As shown, the right filtering mechanism also includes a dust box 11. A dust box 11 with an upward opening is fixedly installed on the lower side of the air inlet box 7. The dust box 11 is in the shape of a prism that is wide at the top and narrow at the bottom. A dust collecting hole that passes through the upper and lower parts is provided on the lower side of the air inlet box 7 corresponding to the upper side of the dust box 11. A dust exhaust pipe 12 is fixedly connected to the center of the lower side of the dust box 11, and a dust exhaust valve 13 is detachably fixedly installed on the lower end of the dust exhaust pipe 12.

[0033] Depending on the needs, the dust discharge valve 13 can be a conventionally known technology, such as a rubber duckbill valve. The inner side of the upper portion of the dust discharge valve 13 is detachably fixed to the outer side of the lower end of the dust discharge pipe 12 via a conventionally known clamp. During use, by providing the dust collection box 11, dust that enters the filter pipe 9 can fall back into the dust collection box 11 and finally be discharged through the dust collection pipe and the dust discharge valve 13. After the inspection vehicle enters the warehouse, the dust in the dust collection box 11 can be discharged through the dust discharge valve 13, preventing dust from entering the air filter 2 and causing damage to the equipment.

[0034] Example 4: As an optimization of the above embodiment, as shown in the attached Figure 4 、 5 As shown in Figures 6 and 7, three mounting through holes are provided at intervals on the front and rear sides of the upper side of the support plate 5. The upper ends of the front and rear filter tubes 9 can be detachably and fixedly installed with connecting short tubes 14, and the upper ends of the front and rear connecting short tubes 14 and the upper end of the middle filter tube 9 are fixedly installed with pre-filters 10.

[0035] According to the needs, the lower end of each filter tube 9 is provided with a cut angle with the left part tilted upward relative to the right part. Under the action of the suction force of the diesel engine exhaust turbocharger of the vehicle body 1, the air outside the vehicle enters the pre-filter 10 and drives the blades in the pre-filter 10 to rotate at high speed. The principle of centrifugal force is used to separate sand and dust from the air. Part of the sand and dust is discharged through the sand discharge port on the outer surface of the pre-filter 10, and the remaining sand and dust enter the dust collecting box 11 driven by the high-speed rotating airflow and stored at the bottom of the dust collecting box 11. The pre-filtered air changes its flow direction in the air intake box 7 and enters the air filter 2, and finally enters the diesel engine air filter intake pipe 8 to complete the air pretreatment. The three pre-filters 10 are fixedly installed on the upper ends of the front and rear connecting short pipes 14 and the upper end of the middle filter tube 9 through existing well-known clamps.

[0036] During use, there are three filter tubes 9, and a pre-filter 10 is installed on the upper end of each filter tube 9, which can ensure the air intake of the air filter 2. At the same time, the pre-filter 10 can be installed in the installation shell 4, so that the height of the installation shell 4 protruding from the right side surface of the vehicle body 1 is less than the vehicle body limit requirement, and the space of the installation shell 4 can be fully utilized.

[0037] Example 5: As an optimization of the above embodiment, as shown in the attached Figure 4 、 5 As shown, the upper end of the filter tube 9 is detachably fixedly mounted with the lower end of the connecting short tube 14 via a flange connection.

[0038] As needed, conventionally known gaskets are installed between the flanges to enhance the sealing performance between the flanges. During use, conventionally known circular flanges are fixedly mounted on the upper end of the filter tube 9 and the lower end of the connecting short tube 14. The circular flanges are removably fixed together using connecting bolts and nuts. This allows the three pre-filters 10 to be staggered vertically, saving space and making the intake system more compact. It also prevents the installation housing 4 from being too large, which would cause the outline of the vehicle body 1 to exceed the railway limit.

[0039] Example 6: As an optimization of the above embodiment, as shown in the attached Figure 2 、 4 As shown, the right filtering mechanism also includes a buffer pad 15, a lock 17 and a hydraulic push rod 16. The buffer pad 15 is fixedly installed on the inner right side of the mounting shell 4, the upper left side of the air intake window 6 is hingedly mounted to the inner upper side of the mounting shell 4, and a lock 17 is provided between the lower right side of the air intake window 6 and the inner lower side of the mounting shell 4. Two hydraulic push rods 16 are provided at front and rear intervals between the lower right side of the air intake window 6 and the inner lower side of the mounting shell 4 corresponding to the position above the lock 17.

[0040] Depending on the requirements, the lock catch 17 can be a conventionally known technology, such as a mechanical four-corner lock or a compression lock for high-speed trains. The hydraulic push rod 16 can also be a conventionally known technology. The cushion 15 can be a rubber strip mounted to the right side of a mounting seat on the vehicle side wall. During use, the cushion 15 can reduce the impact between the air intake window 6 and the vehicle body 1 during operation, thereby extending the service life of the air intake window 6. The upper portion of the air intake window 6 can be a louver structure that guides the inhaled air while also providing rain protection and aesthetics. By providing the hydraulic push rod 16, the extended piston rod of the hydraulic push rod 16 can support the air intake window 6 during maintenance, facilitating maintenance work beneath the air intake window 6.

[0041] The above technical features respectively constitute the various embodiments of the present invention, which have strong adaptability and implementation effect. Non-essential technical features can be added or removed according to actual needs to meet the requirements of different situations.

Claims

1. An air intake system for an inspection vehicle, comprising a vehicle body, with air filters provided on the left and right sides of the vehicle body, characterized in that The left filter mechanism has the same structure as the right filter mechanism, and the upper end of the left air filter is fixedly connected to the corresponding position of the left filter mechanism.

2. The inspection vehicle air intake system according to claim 1 is characterized in that The inner wall on the left side of the air intake box is in a V shape opening to the right, and the upper end of the right air intake pipe is fixedly connected to the left side of the lower part of the right air intake box.

3. The inspection vehicle air intake system according to claim 1 or 2, characterized in that The right filtering mechanism also includes a dust box. A dust box with an upward opening is fixedly installed on the lower side of the air intake box. The dust box is in the shape of a prism that is wide at the top and narrow at the bottom. A dust collecting hole that passes through the upper and lower parts is provided on the lower side of the air intake box corresponding to the upper side of the dust box. A dust exhaust pipe is fixedly connected to the center of the lower side of the dust box, and a dust exhaust valve is detachably fixedly installed on the lower end of the dust exhaust pipe.

4. The inspection vehicle air intake system according to claim 1 or 2, characterized in that There are three mounting holes at intervals on the front and rear upper sides of the support plate. The upper ends of the front and rear filter tubes can be detachably fixed with connecting short tubes. The upper ends of the front and rear connecting short tubes and the upper end of the middle filter tube are fixed with pre-filters.

5. The inspection vehicle air intake system according to claim 3 is characterized in that There are three mounting holes at intervals on the front and rear upper sides of the support plate. The upper ends of the front and rear filter tubes can be detachably fixed with connecting short tubes. The upper ends of the front and rear connecting short tubes and the upper end of the middle filter tube are fixed with pre-filters.

6. The inspection vehicle air intake system according to claim 4, characterized in that The upper end of the filter tube is detachably fixedly installed with the lower end of the connecting short tube through a flange connection.

7. The inspection vehicle air intake system according to claim 5, characterized in that The upper end of the filter tube is detachably fixedly installed with the lower end of the connecting short tube through a flange connection.

8. The inspection vehicle air intake system according to claim 1, 2, 5, 6 or 7, characterized in that The right filtering mechanism also includes a buffer pad, a lock and a hydraulic push rod. A buffer pad is fixedly installed on the inner side of the right part of the mounting shell. The upper left side of the air intake window is hingedly installed with the inner side of the upper part of the mounting shell. A lock is provided between the lower right side of the air intake window and the inner side of the lower part of the mounting shell. Two hydraulic push rods are provided at front and rear intervals between the lower right side of the air intake window and the inner side of the lower part of the mounting shell at the position above the lock.

9. The inspection vehicle air intake system according to claim 3, characterized in that The right filtering mechanism also includes a buffer pad, a lock and a hydraulic push rod. A buffer pad is fixedly installed on the inner side of the right part of the mounting shell. The upper left side of the air intake window is hingedly installed with the inner side of the upper part of the mounting shell. A lock is provided between the lower right side of the air intake window and the inner side of the lower part of the mounting shell. Two hydraulic push rods are provided at front and rear intervals between the lower right side of the air intake window and the inner side of the lower part of the mounting shell at the position above the lock.

10. The inspection vehicle air intake system according to claim 4, characterized in that The right filtering mechanism also includes a buffer pad, a lock and a hydraulic push rod. A buffer pad is fixedly installed on the inner side of the right part of the mounting shell. The upper left side of the air intake window is hingedly installed with the inner side of the upper part of the mounting shell. A lock is provided between the lower right side of the air intake window and the inner side of the lower part of the mounting shell. Two hydraulic push rods are provided at front and rear intervals between the lower right side of the air intake window and the inner side of the lower part of the mounting shell at the position above the lock.

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