Air inlet filter door of traction and auxiliary integrated cabinet

Abstract

The utility model discloses an air inlet filter door of a traction and auxiliary integrated cabinet, which is mounted at an air inlet of a cabinet body and comprises a ventilation frame assembly, an overturning and limiting assembly, a door assembly, a grating frame assembly and a filter screen assembly. The ventilation frame assembly is fixed to the door assembly, and closing and overturning between the grating frame assembly and the ventilation frame assembly are achieved through the overturning and limiting assembly. Mounting holes are formed in the filter screen assembly, and the filter screen assembly and the pressing rivet screws on the grating frame assembly are movably mounted. Compared with the prior art, the pressure riveting screws are arranged on the grating frame assembly, and the mounting holes in the filter screen assembly and the pressure riveting screws are movably mounted, so that the filter screen can be quickly and conveniently dismounted and mounted.

Description

Technical Field

[0001] The utility model belongs to the field of rail transit, and particularly relates to an air inlet filter door for a combined traction and auxiliary cabinet. Background Technique

[0002] At present, in the field of rail transit, the heat dissipation of internal power modules (such as traction power modules and auxiliary power modules) and magnetic components (reactors, transformers, etc.) generally relies on forced air cooling; that is, when a centrifugal fan works, the suction force generated is used to suck in the air outside the equipment, so that this part of the air passes through the fins of the radiator, takes away the heat conducted on the fins, and then blows to the magnetic components to take away their heat generation, and finally discharges from the cabinet; in order to maintain the cleanliness of the gaps between the fins of the power module radiator (prevent foreign objects from blocking the gaps between the fins, such as long-term stacked catkins, wool fluffs, etc., or plastic bags, leaves, etc.; because once the gaps between the fins are blocked, the heat dissipation capacity will decrease, causing the system to detect too high a temperature and perform protection, and the vehicle will operate at a reduced power, which will affect the dispatching and operation of the entire line), at the external air inlet of the equipment, it is necessary to set a stainless steel filter screen (or a filter cotton with flame retardant characteristics) that can first filter the air and secondly block large particles or foreign objects that are easy to stack into a paste; in this way, the filtered external air can enter the air duct and take away the heat on the fins of the power module radiator, thereby ensuring that the equipment can work for a long time; during daily maintenance, according to different regions and months, the filter screen is cleaned or the filter cotton is discarded and replaced; the whole process requires convenient operation and is easy to operate;

[0003] In the conventional design, it is generally fixed with bolts around the filter screen plate or a grille plate is fixed; the filter screen plate or filter cotton is attached inside the grille plate; this structural form is simple and reliable, but the disadvantage is that the operation of disassembling bolts, etc. is more cumbersome and not conducive to quick replacement; Summary of the Utility Model

[0004] The purpose of the utility model is to provide an air inlet filter door for a combined traction and auxiliary cabinet, which adopts structural forms such as bolt-free, quick positioning pins for filter screen installation, and flip with limit, etc., to realize the quick and convenient disassembly and installation of the filter screen.

[0005] The technical solution to achieve the purpose of the utility model is: an air inlet filter door for a combined traction and auxiliary cabinet, the air inlet filter door is installed at the air inlet of the cabinet, and the air inlet filter door includes a ventilation frame assembly, a flip and limit assembly, a door assembly, a grille frame assembly, and a filter screen assembly; the ventilation frame assembly is fixed on the door assembly, and the grille frame assembly and the ventilation frame assembly are closed and flipped through the flip and limit assembly; installation holes are provided on the filter screen assembly and are movably installed with the riveted screws on the grille frame assembly.

[0006] Compared with the prior art, the remarkable advantages of the present utility model are as follows: By providing press riveting screws on the grille frame assembly, and the mounting holes on the filter screen assembly are movably mounted with these press riveting screws, the quick bolt-free installation of the filter screen assembly is realized; also, through the design of structures such as the telescopic pull rod assembly, the flipping and limiting of the filter screen assembly are achieved; this installation form is also conducive to the quick and convenient disassembly and installation of the filter screen; it avoids the structural form of tightening with bolts in a circle, can achieve faster installation and disassembly, effectively improves the operation efficiency, and then reduces the operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 3D view of the air inlet filter door Figure 1 ;

[0008] Figure 2 3D view of the air inlet filter door Figure 2 ;

[0009] Figure 3 Enlarged view of area II;

[0010] Figure 4 3D view of the air inlet filter door (reverse side);

[0011] Figure 5 3D view of the ventilation frame assembly;

[0012] Figure 6 Exploded view of the ventilation frame assembly;

[0013] Figure 7 3D view of the flipping seat;

[0014] Figure 8 3D view of the flipping bracket;

[0015] Figure 9 3D view of the door assembly (front side);

[0016] Figure 10 3D view of the door assembly (reverse side);

[0017] Figure 11 3D view of the grille frame assembly (reverse side);

[0018] Figure 12 Packaging view of the grille frame assembly (front side);

[0019] Figure 13 3D view of the filter screen assembly;

[0020] Figure 14 Exploded view of the filter screen assembly;

[0021] Figure 15 3D view of the telescopic pull rod assembly;

[0022] Figure 16Exploded view of the telescopic tie rod assembly;

[0023] Figure 17 Stereogram of the locking stud;

[0024] Figure 18 Stereogram of the bushing;

[0025] Figure 19 Stereogram of the extended connecting rod;

[0026] Figure 20 Flip schematic Figure 1 ;

[0027] Figure 21 Magnification of area I;

[0028] Figure 22 Installation schematic of the filter net;

[0029] Figure 23 Schematic of installing the filter door to the external cabinet; Specific implementation manner

[0030] The following further introduces the present utility model in conjunction with the accompanying drawings and specific embodiments.

[0031] The air intake filter door of the traction and auxiliary integrated cabinet mainly includes a ventilation frame assembly 1, a flipping and limiting assembly, a door assembly 4, a grille frame assembly 6, a filter net assembly 7, a telescopic tie rod assembly 8 and a lock assembly;

[0032] The ventilation frame assembly 1 is installed on the door assembly 4 by bolts, and the grille frame assembly 6 is installed on the ventilation frame assembly 1, so that the grille frame assembly 6 can be flipped and fixed.

[0033] The ventilation frame assembly 1 includes a ventilation frame 1-1, a short bracket 1-2, a long bracket 1-3, an upper ventilation frame strip 1-4, a long reinforcing bracket 1-5, a short reinforcing bracket 1-6, an anti-disengagement bracket 1-7, a rivet nut 1-8, and a rivet screw 1-9;

[0034] The ventilation frame 1-1, the short bracket 1-2, the long bracket 1-3, the upper ventilation frame strip 1-4, the long reinforcing bracket 1-5, the short reinforcing bracket 1-6, and the anti-disengagement bracket 1-7 are riveted into an integral ventilation frame assembly 1 by the rivet screw 1-9.

[0035] The rivet nut 1-8 is fixedly installed on the ventilation frame 1-1, and through cooperation with the bolt, the fixed connection between the flipping seat 2 and the ventilation frame 1-1, and the hinge connection between the telescopic tie rod assembly 8 and the ventilation frame 1-1 are realized.

[0036] The ventilation frame 1-1 is formed by cutting, bending and welding aluminum alloy materials; there are two short brackets 1-2 and two long reinforcing brackets 1-5; the short brackets 1-2, long brackets 1-3, upper strip 1-4 of the ventilation frame, long reinforcing brackets 1-5 and short reinforcing brackets 1-6 are all cut and bent from aluminum alloy materials; the anti-detachment bracket 1-7 is made of stainless steel materials; the rivet nuts 1-8 and rivet screws 1-9 are standard parts and can be obtained by external procurement;

[0037] The flipping and limiting assembly includes: a flipping seat 2, a flipping bracket 3, a buckle 5 and a buckle mounting bracket 9; there are three groups of flipping and limiting assemblies, which are mainly used for the flipping, limiting and limiting release functions of the grille frame assembly 6.

[0038] The flipping seat 2 is fixed on the air frame 1-1, and the flipping bracket 3 is fixed on one side of the grille frame assembly 6; the flipping bracket 3 is hinged to the flipping seat 2.

[0039] Specifically, the grille frame assembly 6 is hinged to the ventilation frame assembly 1 by passing bolts through the flipping seat 2 from the side and then through the flipping bracket 3.

[0040] Both the flipping seat 2 and the flipping bracket 3 are made of stainless steel materials and are formed by cutting and bending.

[0041] The buckle 5 is fixed on the side of the grille frame assembly 6 away from the flipping bracket 3; the buckle mounting bracket 9 is fixed on the upper strip 1-4 of the ventilation frame in the ventilation assembly 1. The buckle 5 cooperates with the buckle mounting bracket 9 for the locking and limiting function after the grille frame assembly 6 is fitted;

[0042] The buckle 5 is an externally purchased part, and the buckle mounting bracket 9 is made of stainless steel materials and is formed by cutting and bending.

[0043] The door assembly 4: includes a door panel 4-1, a support frame 4-2, a door anti-detachment piece 4-3, a door handle 4-4, a door hook 4-5, a grounding bracket 4-6, a door inner lining plate 4-7; the support frame 4-2, the door anti-detachment piece 4-3, the door handle 4-4, the door hook 4-5, the grounding bracket 4-6, and the door inner lining plate 4-7 are all fixed on the door panel 4-1 by rivets;

[0044] The upper surface of the support frame 4-2 contacts and supports the air frame 1-1 for supporting the air frame 1-1; the door anti-detachment piece 4-3 combines with the secondary anti-detachment assembly on the box body 13 to realize the secondary anti-detachment function of the door assembly. The door handle 4-4 facilitates the placement of the operator's hands and assists in the overall installation and handling of the filter door; the door hook 4-5 is used to cooperate with the cabinet hook 13-1 on the cabinet body 13; the grounding bracket 4-6 is connected to the wire for grounding the filter door. The door inner lining plate 4-7 is used for strengthening the door panel;

[0045] There are two support frames 4-2 and two door anti-disengagement pieces 4-3;

[0046] Among them, the door panel 4-1, the support frame 4-2, the grounding support 4-6, and the door inner lining 4-7 are all made of aluminum alloy material and formed by cutting and bending; the door anti-disengagement piece 4-3, the door handle 4-4, and the door hook 4-5 are all made of stainless steel material;

[0047] The ventilation frame assembly 1 is fixed on the door assembly 4, and together with the door panel, it realizes the sealing of the schematic cabinet 13 and the formation of the air inlet port air duct.

[0048] The grille frame assembly 6 is used to install the filter net assembly 7; the grille frame assembly 6 includes a grille frame 6-1, a buckle installation cross beam 6-2, a pull rod installation seat 6-3, and a rivet screw 6-4;

[0049] Among them, the buckle installation cross beam 6-2 and the pull rod installation seat 6-3 are fixedly arranged on the grille frame 6-1; the rivet screw 6-4 is fixedly installed on the grille frame 6-1 through a pneumatic press and protrudes from the plane of the grille frame 6-1.

[0050] Among them, the grille frame 6-1, the buckle installation cross beam 6-2, and the pull rod installation seat 6-3 are all made of stainless steel material, formed by cutting and bending; and then fixed by welding.

[0051] The filter net assembly 7 is used to filter the external air before entering the equipment and can maintain its own cleanliness through cleaning during daily maintenance. The filter net assembly 7 mainly includes a filter pressing plate 7-1, a 30-mesh stainless steel wire mesh 7-2, and a filter net handle 7-3.

[0052] The filter pressing plate 7-1 is made of stainless steel material, cut and formed, and has two layers; the 30-mesh stainless steel wire mesh 7-2 is a standard-mesh rolled wire mesh, and the approximate size is obtained through cutting; the filter net handle 7-3 is formed by bending stainless steel round steel; the 30-mesh stainless steel wire mesh 7-2 is placed in the middle layer of the two filter pressing plates 7-1, and then formed into a sandwich structure by spot welding, and then the stainless steel wire mesh protruding from the edge is ground off; finally, the filter net handle 7-3 is welded at the corresponding position; the filter net assembly 7 is used to filter the external air before entering the equipment and can maintain its own cleanliness through cleaning during daily maintenance.

[0053] The filter pressing plate 7-1 is provided with installation holes that cooperate with the protruding parts of the rivet screws 6-4, so as to realize the bolt-free and detachable installation of the filter net group 7 and the grille frame assembly 6. Convenient installation.

[0054] The telescopic pull rod assembly 8: The telescopic pull rod assembly 8 includes a pull rod 8-1, a flanged pull rod sleeve 8-2, a locking stud 8-3, a bushing 8-4, and a fastening bolt 8-5;

[0055] A kidney-shaped slot hole 8-2-1 is provided inside the hemmed pull rod sleeve 8-2. One end of the pull rod 8-1 is fixedly installed with a pull rod rivet nut 8-1-1, and the other end is installed with a bushing 8-4. One end of the hemmed pull rod sleeve 8-2 is installed with a bushing 8-4. A clamping boss 8-3-1 is provided on the locking stud 8-3, and a bushing boss 8-4-1 is provided on the bushing 8-4 for circumferential clamping, that is, the rotation axis of the hinge between the pull rod 8-1 and the grille frame assembly 6 and the hinge between the hemmed pull rod sleeve 8-2 and the ventilation frame assembly 1.

[0056] The pull rod 8-1 is sleeved inside the hemmed pull rod sleeve 8-2, and relative sliding is achieved between the two. The locking stud 8-3 passes through one side (non-folded side) of the hemmed pull rod sleeve 8-2 and is screwed into the pull rod rivet nut 8-1-1, and the clamping boss 8-3-1 is located in the kidney-shaped slot hole 8-2-1. The fastening bolts 8-5 respectively pass through the pull rod 8-1 and the bushing boss 8-4-1 and are screwed into the pull rod mounting seat 6-3, thereby realizing the hinge connection between the pull rod 8-1 and the mounting seat 6-3. Similarly, the fastening bolts 8-5 respectively pass through the hemmed pull rod sleeve 8-2 and the bushing boss 8-4-1 and are screwed into the rivet nut 1-8 on the side of the ventilation frame assembly 1 to realize the hinge connection between the hemmed pull rod sleeve 8-2 and the ventilation frame assembly 1. And the stroke of the pull rod 8-1 is set within the length range of the kidney-shaped slot hole 8-2-1. When the grille frame assembly 6 is turned upward, the pull rod 8-1 starts to contract. When it is turned downward, the pull rod 8-1 drives the locking stud 8-3 to reach the edge of the kidney-shaped slot hole 8-2-1, and then forms a pulling force to pull the grille frame assembly 6 to stop at a set angle.

[0057] The pull rod 8-1 and the hemmed pull rod sleeve 8-2 are cut from stainless steel material and formed by pressing and bending.

[0058] The locking stud 8-3 and the bushing 8-4 are formed by turning stainless steel material. The fastening bolts 8-5 are off-the-shelf products conforming to national standards. The main function of the telescopic pull rod assembly 8 is to provide a certain angle of downward turning for the grille frame assembly 6. Due to its own weight, it will continue to sag. Through the telescopic pull rod assembly 8, the force generated during its sagging process can be effectively shared, providing a part of the pulling force, and then keeping the grille frame assembly 6 from deforming and restricting it at a certain angle. 0

[0059] The lock assembly is used to lock the door panel 4-1 to the external schematic cabinet 13; the lock assembly includes a tension lock 10, a lock cover plate 11 and an extended connecting rod 12; wherein square bosses 12-1 and square inner grooves 12-2 are respectively arranged at both ends of the extended connecting rod 12. The lock cover plate 11 is fixed on the ventilation frame 1-1 in the ventilation frame assembly 1, the tension lock 10 is installed on the door panel 4-1 in the door assembly 4, the lock core end (the part cooperating with the key) of the tension lock 10 is a four-corner boss, and is matched with the square inner groove 12-2 of the extended connecting rod 12. The other end of the extended connecting rod 12, near the cylindrical section of the square boss 12-1, passes through the support frame 4-2 and the ventilation frame 1-1, and is rotationally connected with the lock cover plate 11 through a sleeve; the square boss 12-1 is located in the round hole of the square boss 12-1, and is connected with the key when the tension lock 10 needs to be opened or locked.

[0060] Specifically: when the key rotates, it drives the extended connecting rod 12 to rotate, which can drive the four-corner boss at the lock core end of the tension lock 10 to rotate, so as to realize the locking and disassembly with the schematic cabinet 13.

[0061] Tension lock 10: It is an externally purchased part, generally a customized part, with the ability to resist impact, and will not rotate and loosen due to vibration after being locked;

[0062] Lock cover plate 11: Cut and formed from aluminum alloy material;

[0063] Extended connecting rod 12: Turned and formed from stainless steel round steel.

[0064] Cabinet 13: Used to display the effect after installing the door panel; cabinet hooks 13-1 are arranged on the schematic cabinet 13, mainly used for the cooperative installation with the door hooks 4-5 to realize the limit and rotational connection of the door assembly 4;

[0065] The installation and use steps of the air intake filter door of the traction and auxiliary integrated cabinet described in the present utility model are as follows:

[0066] Step 1. Installation of each component:

[0067] Assemble the door assembly 4, and rivet and fix parts such as the support frame 4-2, the grounding bracket 4-6, the door inner lining plate 4-7, the door anti-disengagement piece 4-3, the door handle 4-4, and the door hook 4-5 to the door panel 4-1 through rivets;

[0068] Assemble the ventilation frame assembly 1, and rivet and form the ventilation frame 1-1, the short bracket 1-2, the long bracket 1-3, the upper bar of the ventilation frame 1-4, the long reinforcement bracket 1-5, the short reinforcement bracket 1-6, and the anti-disengagement bracket 1-7 through rivet screws 1-9, and set rivet nuts 1-8 in the corresponding areas, and then form the ventilation frame assembly 1;

[0069] Assemble the grille frame assembly 6. Press the riveting screw 6-4 onto the grille frame 6-1 through a pneumatic press. Then, weld and fix the buckle mounting crossbeam 6-2 and the tie rod mounting seat 6-3 on the corresponding area of 6-1 by the grille frame 6-1, thus forming the grille frame assembly 6;

[0070] Assemble the filter screen assembly 7. Place a filter pressing plate 7-1 on the workbench, then lay a 30-mesh stainless steel wire mesh 7-2, and press another filter pressing plate 7-1 on it. Pinch the two filter pressing plates 7-1, and through another person, evenly stretch and straighten the 30-mesh stainless steel wire mesh 7-2 around. Press and bond the two filter pressing plates 7-1 together with the stainless steel wire mesh through a spot welder. Then, use a grinding machine to smooth the edges of the sandwich structure to remove the burrs of the stainless steel wire mesh protruding from the edges. Finally, weld the filter screen handle 7-3 at the corresponding position and level the entire filter screen assembly 7;

[0071] Step 2, overall installation:

[0072] Step 2.1: Install the tension lock 10 on the door assembly 4; install the ventilation frame assembly 1 on the door assembly 4 through bolts;

[0073] Step 2.2: Insert the lengthened connecting rod 12 (with the square boss 12-1 facing outward) to first pass through the ventilation frame assembly 1 (the round hole in the middle of the lower area), and then through the round hole in the middle of the support frame 4-2. The square inner groove 12-2 of the lengthened connecting rod 12 cooperates with the four-corner bosses of the tension lock 10; then, sleeved with a sleeve on the cylindrical section near the square boss 12-1 end to realize the rotational connection between the lengthened connecting rod 12 and the lock cover plate 11 and prevent the lengthened connecting rod 12 from falling off outward, and then fix the lock cover plate 11 with bolts.

[0074] Step 2.3: Fix the swivel base 2 (3 pieces) and the mounting bracket 9 on the ventilation frame assembly 1 through bolts; install the swivel bracket 3 (3 pieces) on the grille frame assembly 6 through bolts. Similarly, install the buckle 5 in place with screws; finally, pass through the swivel base 2 (3 pieces) from the side with bolts first, and then through the swivel bracket 3 (3 pieces) and tighten, realizing the hinge connection between the grille frame assembly 6 and the ventilation frame assembly 1;

[0075] Step 2.4: Insert the pull rod 8-1 (this end of the pull rod rivet nut 8-1-1) into the flanged pull rod sleeve 8-2. Then, pass the locking stud 8-3 through one side (smooth surface) of the flanged pull rod sleeve 8-2 and screw it into the pull rod rivet nut 8-1-1. At this time, the clamping boss 8-3-1 is exactly located in the waist slot hole 8-2-1. There is a unilateral clearance of 1 mm between the outer surface of the pull rod 8-1 and the inner surface of the flanged pull rod sleeve 8-2, which enables free movement during the operation process (the thickness, width, etc. of the flanged pull rod sleeve 8-2 are 1 mm larger than the thickness of the pull rod 8-1 and the width of the narrow-direction shape of the pull rod 8-1, that is, there is a clearance of 1 mm). Then, insert the bushing 8-4 into the round holes at one end of the pull rod 8-1 and the round holes at one end of the flanged pull rod sleeve 8-2 respectively. At this time, the bushing boss 8-4-1 is located in the round hole to form a clamping effect. Finally, pass the fastening bolt 8-5 through the pull rod 8-1 and the bushing boss 8-4-1 respectively and screw it into the pull rod mounting seat 6-3. For the other end, perform the same operation. Pass the fastening bolt 8-5 through the flanged pull rod sleeve 8-2 and the bushing boss 8-4-1 respectively and screw it into the rivet nut 1-8 on the side of the ventilation frame assembly 1. Finally, set the stroke of the pull rod 8-1 within the length range of the waist slot hole 8-2-1. When the grille frame assembly 6 is turned upwards, the pull rod 8-1 starts to contract. When turned downwards, the pull rod 8-1 drives the locking stud 8-3 to reach the edge of the waist slot hole 8-2-1, thereby forming a pulling force to hold the grille frame assembly 6 at the set angle and stop.

[0076] Step 2.5: Place the filter screen assembly 7 into the internal area of the grille frame assembly 6. By holding the filter screen handle 7-3, make the two through round holes at the corresponding positions of the filter screen assembly 7 pass through the rivet screws 6-4 and fit them flat.

[0077] Step 2.6: Turn the grille frame assembly 6 upwards and lock the buckle 5, which completes the assembly process of the entire filter door. The steps for removing the filter screen are the opposite. Loosen the buckle, turn the grille frame assembly 6 downwards, and then take out the filter screen assembly 7 through the handle 7-3.

[0078] The filter door described in the present invention is correspondingly installed at the air inlet of the schematic cabinet 13. After the filter door is installed in place, there is a fit between the schematic cabinet 13 and the door assembly 4, between the door assembly 4 and the ventilation frame assembly 1, and between the ventilation frame assembly 1 and the grille frame assembly 6. The external air inhaled by the schematic centrifugal fan can only enter the air duct after being filtered by the 30-mesh stainless steel wire mesh 7-2, effectively preventing the external air from directly entering the air duct without passing through the 30-mesh stainless steel wire mesh 7-2.

Claims

1. An air inlet filter door for a traction and auxiliary integrated cabinet, characterized in that: The air inlet filter door is installed at the air inlet of the cabinet, and the air inlet filter door includes a ventilation frame assembly, a flip and limit assembly, a door assembly, a grille frame assembly, and a filter assembly; the ventilation frame assembly is fixed on the door assembly, and the grille frame assembly and the ventilation frame assembly are closed and flipped by the flip and limit assembly; the filter assembly is provided with a mounting hole, which is movably installed with the rivet screws on the grille frame assembly.

2. The air inlet filter door of the traction and auxiliary integrated cabinet according to claim 1 is characterized in that: The door assembly comprises a door panel, a support frame, a door anti-dropping piece and a door hook; the support frame, the door anti-dropping piece and the door hook are fixed on the door panel; the upper surface of the support frame contacts the wind frame assembly and is used to support the wind frame assembly; the door anti-dropping piece is combined with the secondary anti-dropping assembly on the external cabinet to realize the secondary anti-dropping function of the door assembly; the door hook is used to cooperate with the cabinet support hook on the external cabinet.

3. The air inlet filter door of the traction and auxiliary integrated cabinet according to claim 1 is characterized in that: The grille frame assembly includes a grille frame, a buckle mounting crossbeam, a tie rod mounting seat, and rivet screws; the buckle mounting crossbeam, the tie rod mounting seat and the rivet screws are fixedly arranged on the grille frame; the rivet screws protrude from the plane of the grille frame and are used to install the filter assembly.

4. The air inlet filter door of the traction and auxiliary integrated cabinet according to claim 3 is characterized in that: The filter assembly mainly includes a filter pressure plate, a stainless steel wire mesh, and a filter handle; the stainless steel wire mesh is installed in the middle layer of the two layers of filter pressure plates and fixed to form a sandwich structure; the filter handle is fixedly installed on the filter pressure plate; the filter pressure plate is provided with a mounting hole that cooperates with the protruding part of the rivet screw.

5. The air inlet filter door of the traction and auxiliary integrated cabinet according to claim 1, characterized in that: The flip and limit assembly includes: a flip seat, a flip bracket, a buckle and a buckle mounting frame; the flip seat is fixed on the ventilation frame assembly, and the flip bracket is fixed on one side of the grille frame assembly; the flip bracket and the flip seat are hinged; the buckle is fixed on the other side of the grille frame assembly, and the buckle mounting frame is fixed on the ventilation assembly, and the buckle cooperates with the buckle mounting frame to perform the locking and limiting function after the grille frame assembly is fitted.

6. The air inlet filter door of the traction and auxiliary integrated cabinet according to claim 1, characterized in that: The ventilation frame assembly includes a ventilation frame, a short bracket, a long bracket, an upper baffle bar on the ventilation frame, a long reinforcing bracket, a short reinforcing bracket, and an anti-detachment bracket; the ventilation frame, the short bracket, the long bracket, the upper baffle bar on the ventilation frame, the long reinforcing bracket, the short reinforcing bracket, and the anti-detachment bracket are fixedly connected to form the ventilation frame assembly.

7. The air inlet filter door of the traction and auxiliary integrated cabinet according to claim 1, characterized in that: The air inlet filter door also includes a telescopic pull rod assembly, which is used to keep the grille frame assembly from deformation and limit the rotation angle when it is flipped downward; the telescopic pull rod assembly includes a pull rod and a folded pull rod sleeve; the pull rod and the folded pull rod sleeve are slidingly connected, one end of the pull rod is hinged to the grille frame assembly, and one end of the folded pull rod sleeve is hinged to the hinge of the ventilation frame assembly.

8. The air inlet filter door of the traction and auxiliary integrated cabinet according to claim 1, characterized in that: The air inlet filter door also includes a lock assembly for locking the filter door to an external cabinet; the lock assembly includes a tension lock, a lock cover plate and an extended connecting rod; the tension lock is installed on the door assembly, and the lock cover plate is installed on the ventilation frame assembly, one end of the long connecting rod is connected to the lock core end of the tension lock, and the other end is rotatably connected to the lock cover plate, and the long connecting rod is driven to rotate by a key, thereby driving the tension lock core to rotate, thereby realizing the opening and locking of the tension lock.

9. The air inlet filter door of the traction and auxiliary integrated cabinet according to claim 2, characterized in that: A grounding bracket is also fixedly installed on the door panel, and the grounding bracket is connected to a wire for grounding the filter door; a door lining plate is also fixedly installed on the door panel for reinforcing the door panel.

10. The air inlet filter door of the traction and auxiliary integrated cabinet according to claim 7, characterized in that: A waist slot hole is provided in the folding pull rod sleeve, and a locking stud passes through the waist slot hole and is installed in cooperation with the pull rod to limit the relative movement displacement between the pull rod and the folding pull rod sleeve.

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