Tunnel reversing ventilation device

Abstract

The application discloses a tunnel reversing ventilation device and belongs to the technical field of tunnel reversing ventilation. The device comprises a mounting air duct, sound attenuation inner cylinders are arranged on the two sides of the mounting air duct, movable outer cylinders are movably arranged on the two sound attenuation inner cylinders, an elastic hose is arranged at the bottom of the outer wall of the mounting air duct, drive motors are fixedly arranged on the left and right sides of the outer wall of the mounting air duct, and an elastic mechanism is arranged on the output shaft of the drive motor. The elastic mechanism drives the elastic hose to be stretched and retracted. An unfolding mechanism is arranged between the sound attenuation inner cylinder and the movable outer cylinder arranged thereon, and the unfolding mechanism is in transmission connection with the drive motor. The movable outer cylinder is driven by the unfolding mechanism to slide along the corresponding sound attenuation inner cylinder, so that the length of the mounting air duct is prolonged. The application solves the problems that the ventilation device cannot timely exhaust the smoke around the smoke point when the ventilation device is far away from the smoke point, and the ventilation devices are far away from each other, which is not conducive to the centralized exhaust of the smoke.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of tunnel reversing ventilation, and particularly relates to a tunnel reversing ventilation device. BACKGROUND

[0002] Tunnel reversing ventilation is a ventilation mode for ensuring ventilation effect by changing the direction of air flow in a tunnel, and its working principle includes reversing based on a ventilation pipe group and intelligent device control reversing, etc. For example, some systems realize reversing by switching the flow passage of the main pipe section through an adjusting piece and changing the operation mode of the ventilation equipment, and some devices realize reversing by controlling the angle and position of the ventilation device through a control center to control the rotating rod and the telescopic rod. In addition to timely discharging automobile exhaust in the tunnel, the ventilation device in the tunnel also has the ability of quickly discharging smoke when a fire occurs in the tunnel.

[0003] However, in the actual use process, since the ventilation device is generally fixedly installed on the top of the tunnel, the ventilation device is far away from the smoke source when discharging smoke, and cannot quickly discharge the smoke around the smoke source, which is not convenient for personnel to escape. In addition, in the process of discharging smoke, the distance between the ventilation devices is far, the smoke is not concentrated, and the smoke diffusion may affect the visibility in the tunnel in the case of thick smoke. SUMMARY

[0004] The tunnel reversing ventilation device overcomes the shortcomings of the prior art and solves the problems that the ventilation device is far away from the smoke point and cannot timely discharge the smoke around the smoke point, and the distance between the ventilation devices is far, which is not conducive to the centralized discharge of the smoke.

[0005] The application is realized through the following technical scheme:

[0006] The tunnel reversing ventilation device comprises an installation air duct, a ventilation motor fixedly installed in the installation air duct, ventilation fan blades fixedly installed on the output shaft of the ventilation motor, sound attenuation inner cylinders arranged on the two sides of the installation air duct, movable outer cylinders movably arranged on the two sound attenuation inner cylinders, an installation ring fixedly installed at the center position of the bottom outer wall of the installation air duct, a flexible hose arranged in the installation ring, a sealing disc arranged on the lower side of the flexible hose, drive motors fixedly installed on the left and right sides of the outer wall of the installation air duct, and a telescopic mechanism installed on the output shaft of the drive motor; the telescopic mechanism drives the telescopic flexible hose to extend or retract; an unfolding mechanism is installed between the sound attenuation inner cylinder and the movable outer cylinder movably arranged thereon, and the unfolding mechanism is in transmission connection with the drive motor; the unfolding mechanism drives the movable outer cylinder to slide along the corresponding sound attenuation inner cylinder, so as to lengthen the installation air duct; a hoisting block is fixedly installed at the upper end of the installation air duct, and the device is fixed on the top of the tunnel through the hoisting block.

[0007] Further, the telescopic mechanism comprises a winding disc and a cable, the winding disc is fixedly installed on the output shaft of the driving motor, the cable is wound on the winding disc, and one end of the cable is arranged on the sealing disc; when the driving motor drives the winding disc to rotate, the cable is released, so that the telescopic hose is lowered.

[0008] Further, the telescopic mechanism further comprises connecting columns, a first sealing ring, a smoking ring, a smoking groove, a first fixing ring, a second fixing ring and a second sealing ring; three groups of connecting columns are fixedly installed on the lower side of the mounting ring, the first sealing ring is fixedly installed on the lower side of the connecting column, the smoking ring is fixedly installed on the lower side of the telescopic hose, the sealing disc is fixedly installed on the lower side of the smoking ring, the smoking groove is arrayed on the side wall of the smoking ring, the smoking ring is movably inserted into the first sealing ring, the outer wall of the smoking ring is tightly combined with the inner wall of the first sealing ring, the first fixing ring is fixedly installed on the upper end of the telescopic hose, the second fixing ring is fixedly installed in the mounting ring, the second sealing ring is fixedly installed on the second fixing ring, and the first fixing ring is tightly combined with the second sealing ring.

[0009] Further, the telescopic mechanism further comprises a first screw rod, a first screw sleeve, a mounting block, a first wire bundling ring and a second wire bundling ring; the first screw rod is fixedly installed on the lower side of the second fixing ring in a circumferential direction, the first screw rod is inserted into the first fixing ring, the first screw sleeve is threadedly connected to the first screw rod, the outer diameter of the first fixing ring is matched with the inner diameter of the first sealing ring in size, two groups of mounting blocks are fixedly installed on the sealing disc, one end of the cable is arranged on the mounting block, two groups of the first wire bundling ring are fixedly installed on the upper end of the first sealing ring, and the second wire bundling ring is fixedly installed on the mounting ring; the mounting blocks, the first wire bundling ring and the second wire bundling ring on the same side are located on the same axis, and the cable is movably inserted into the first wire bundling ring and the second wire bundling ring.

[0010] Further, the telescopic mechanism further comprises a side-mounted support, a first fixing block, a second screw sleeve, a first insertion hole and a second screw rod; the side-mounted support is fixedly installed on the first wire bundling ring, the bottom of the winding disc is rotatably installed on the side-mounted support, the first fixing block is fixedly installed on the lower end of the cable, the second screw sleeve is fixedly installed in the first fixing block, the first insertion hole is formed in the mounting block, the second screw rod is movably inserted into the first insertion hole, and the second screw rod is threadedly installed in the second screw sleeve.

[0011] Further, the unfolding mechanism comprises a driving gear, a first bevel gear, a second bevel gear, a second fixed block, a connecting long plate and a tooth; the center positions of the left and right sides of the outer wall of the air duct are rotatably provided with the driving gears, the two sides of the movable outer cylinder are connected with one end of the connecting long plate, a row of teeth is fixedly installed on the connecting long plate along the length direction thereof, the two groups of connecting long plates on the same side are engaged with the driving gears on the same side through the teeth, the first bevel gears are fixedly installed on the two groups of driving gears, the output shafts on the upper side of the driving motor are fixedly provided with the second bevel gears, the first bevel gears and the second bevel gears are engaged, the two sides of the movable outer cylinder are fixedly provided with the second fixed blocks, and the end of the connecting long plate is connected with the second fixed block.

[0012] Further, the unfolding mechanism further comprises a first long plate, a second long plate, a resistance-reducing ball, a rolling groove and a third sealing ring; the inner side of the movable outer cylinder is fixedly provided with two groups of first long plates in a symmetrical manner, the outer side of the sound-absorbing inner cylinder is fixedly provided with two groups of second long plates, the lower side of the first long plate is rotatably provided with a circle of resistance-reducing balls arranged in an array, the upper side of the second long plate is provided with a rolling groove, the resistance-reducing balls roll in the rolling groove, the end of the movable outer cylinder is fixedly provided with a third sealing ring, and the third sealing ring abuts against the end of the sound-absorbing inner cylinder.

[0013] Further, the unfolding mechanism further comprises a limiting plug, a third screw sleeve, a limiting slot, a second plug hole, a third screw rod, a sliding groove, a sliding block, a limiting groove and a limiting block; one end of the sound-absorbing inner cylinder is fixedly provided with four groups of limiting plugs, the limiting plug is fixedly provided with a third screw sleeve, the two sides of the air duct are uniformly provided with four groups of limiting slots, the limiting slot is provided with a second plug hole, the limiting plug is plugged into the limiting slot, a third screw rod is movably plugged into the second plug hole, and the third screw rod is screwedly installed in the third screw sleeve; the connecting long plate is provided with a sliding groove, the two sides of the air duct are fixedly provided with two groups of sliding blocks, the sliding blocks slide in the sliding groove, the upper and lower sides of the sliding block are provided with a limiting groove, and the sliding groove is fixedly provided with two groups of limiting blocks which are plugged into the limiting groove.

[0014] Further, the unfolding mechanism further comprises a clamping block, a fourth screw sleeve, a clamping frame, a third plug hole and a fourth screw rod; the clamping block is fixedly installed on the second fixed block, the fourth screw sleeve is fixedly installed in the clamping block, the clamping frame is fixedly installed on one end of the connecting long plate, the clamping block is plugged into the clamping frame, the clamping frame is provided with a third plug hole, a fourth screw rod is movably plugged into the third plug hole, and the fourth screw rod is screwedly installed in the fourth screw sleeve.

[0015] Further, the two sides of the lifting block are fixedly provided with L-shaped plates, the end of the L-shaped plate is fixedly provided with two groups of fifth screw rods, the two groups of movable outer cylinders are fixedly provided with lifting plates, the lifting plates are provided with two groups of lifting holes, and the positions of the lifting holes are opposite to the positions of the fifth screw rods.

[0016] The beneficial effects generated by the present application relative to the prior art are:

[0017] 1. In the case of smoke in the tunnel, the present application can quickly suck the smoke around the smoke point by lowering the telescopic hose, so that the personnel around the smoke can escape easily, increase the functionality of the equipment during use, and the telescopic hose can be stored on the lower side of the mounting ring when not in use, without affecting the normal ventilation in the mounting cylinder, increasing the stability of the equipment during use;

[0018] 2. The present application also provides a movable outer cylinder, so that the overall length of the device can be extended, thereby reducing the transmission path of the smoke in the air, increasing the flow path of the smoke in the pipeline, effectively increasing the concentration of the smoke, and reducing the escape of the smoke during discharge; and the movement of the movable outer cylinder and the telescopic of the telescopic hose are synchronous, which can quickly enter the state of smoke exhaust, increasing the convenience of the device during use. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The overall structure schematic diagram provided for the embodiment of the present application;

[0020] Figure 2 The structure schematic diagram inside the mounting cylinder provided for the embodiment of the present application;

[0021] Figure 3 The structure separation schematic diagram of the sound attenuation inner cylinder and the movable outer cylinder provided for the embodiment of the present application;

[0022] Figure 4 The structure separation schematic diagram of the telescopic hose provided for the embodiment of the present application;

[0023] Figure 5 The structure separation schematic diagram of the cable provided for the embodiment of the present application;

[0024] Figure 6 The structure separation schematic diagram of the expansion mechanism provided for the embodiment of the present application;

[0025] Figure 7 The structure expansion schematic diagram of the sound attenuation inner cylinder and the movable outer cylinder provided for the embodiment of the present application;

[0026] Figure 8 The partial enlarged schematic diagram of A in the embodiment of the present application; Figure 3

[0027] The partial enlarged schematic diagram of B in the embodiment of the present application; Figure 9 Figure 6 The partial enlarged schematic diagram of B in the embodiment of the present application;

[0028] Figure 10 ​A partial enlarged view of C in Figure 6

[0029] In the figure:

[0030] 1, mounting cylinder; 2, ventilation motor; 3, ventilation fan blade; 4, sound attenuation inner cylinder; 5, movable outer cylinder; 6, mounting ring; 7, flexible hose; 8, sealing disc; 9, driving motor;

[0031] 10, telescopic mechanism; 1001, connecting column; 1002, first sealing ring; 1003, smoke suction ring; 1004, smoke suction groove; 1005, first fixed ring; 1006, second fixed ring; 1007, first screw rod; 1008, first screw sleeve; 1009, second sealing ring; 1010, mounting block; 1011, first wire bundling ring; 1012, second wire bundling ring; 1013, winding disc; 1014, cable; 1015, side-mounted support; 1016, first fixed block; 1017, second screw sleeve; 1018, first insertion hole; 1019, second screw rod;

[0032] 11, unfolding mechanism; 1101, driving gear; 1102, first bevel gear; 1103, second bevel gear; 1104, second fixed block; 1105, connecting long plate; 1106, tooth; 1107, first long plate; 1108, second long plate; 1109, drag-reducing ball; 1110, rolling groove; 1111, third sealing ring; 1112, limiting insertion block; 1113, third screw sleeve; 1114, limiting insertion groove; 1115, second insertion hole; 1116, third screw rod; 1117, sliding groove; 1118, sliding block; 1119, limiting groove; 1120, limiting block; 1121, clamping block; 1122, fourth screw sleeve; 1123, clamping frame; 1124, third insertion hole; 1125, fourth screw rod; 12, hoisting block; 13, L-shaped plate; 14, fifth screw rod; 15, hoisting plate; 16, hoisting hole. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, further detailed description of the present application is made in combination with embodiments and drawings. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application. The technical solutions of the present application are described in detail below in combination with embodiments and drawings, but the protection scope is not limited thereto.

[0034] Referring to Figures 1 to 10 ​The embodiment provides a tunnel reversing ventilation device, which comprises a mounting air duct 1, a ventilation motor 2 fixedly installed in the mounting air duct 1, ventilation fan blades 3 fixedly installed on an output shaft of the ventilation motor 2, sound-absorbing inner cylinders 4 arranged on both sides of the mounting air duct 1, movable outer cylinders 5 movably arranged on the sound-absorbing inner cylinders 4, a mounting ring 6 fixedly installed at the center position of the bottom of the outer wall of the mounting air duct 1, a flexible hose 7 arranged in the mounting ring 6, a sealing disc 8 arranged on the lower side of the flexible hose 7, drive motors 9 fixedly installed on the left and right sides of the outer wall of the mounting air duct 1, and flexible mechanisms 10 installed on the downward output shafts of the drive motors 9; the flexible mechanisms 10 drive the flexible hose 7 to be flexible. Expansion mechanisms 11 are installed between the sound-absorbing inner cylinders 4 and the movable outer cylinders 5 movably arranged thereon, and the expansion mechanisms 11 are in transmission connection with the drive motors 9; the expansion mechanisms 11 drive the movable outer cylinders 5 to slide along the corresponding sound-absorbing inner cylinders 4, so as to lengthen the mounting air duct 1; hoisting blocks 12 are fixedly installed at the upper end of the mounting air duct 1, and the device is fixed on the top of the tunnel as a whole through the hoisting blocks 12.

[0035] When fire smoke appears in the tunnel, the device as a whole forms a T-shaped structure through the flexible flexible hose 7, so that the smoke is extracted from bottom to top, and the smoke around the smoke point can be quickly extracted; in addition, in the process of descending of the flexible hose 7, the movable outer cylinder 5 is synchronously stretched, so that the length of the mounting air duct 1 is lengthened, and the smoke can be concentrated in the mounting air duct 1, and the path of free flow of the smoke in the air is reduced.

[0036] The flexible mechanism 10 comprises a winding disc 1013 and a cable 1014, the winding disc 1013 is fixedly installed on the output shaft of the lower side of the drive motor 9, the cable 1014 is wound on the winding disc 1013, and one end of the cable 1014 is arranged on the sealing disc 8; when the winding disc 1013 is driven to rotate by the drive motor 9, the cable 1014 can be released, so that the flexible hose 7 is lowered to a position close to the bottom of the tunnel.

[0037] The telescopic mechanism 10 further comprises connecting columns 1001, a first sealing ring 1002, a smoking ring 1003, a smoking groove 1004, a first fixing ring 1005, a second fixing ring 1006 and a second sealing ring 1009; three groups of connecting columns 1001 are fixedly installed on the lower side of the mounting ring 6, the first sealing ring 1002 is fixedly installed on the lower side of the connecting column 1001, the smoking ring 1003 is fixedly installed on the lower side of the telescopic hose 7, the sealing disc 8 is fixedly installed on the lower side of the smoking ring 1003, the smoking grooves 1004 are arrayed on the side wall of the smoking ring 1003, the smoking ring 1003 is movably inserted into the first sealing ring 1002, and the outer wall of the smoking ring 1003 is tightly attached to the inner wall of the first sealing ring 1002, the first fixing ring 1005 is fixedly installed on the upper end of the telescopic hose 7, the second fixing ring 1006 is fixedly installed in the mounting ring 6, the second sealing ring 1009 is fixedly installed on the second fixing ring 1006, and the first fixing ring 1005 is tightly attached to the second sealing ring 1009. The schematic diagram of the structure is Figure 4 The telescopic hose 7 can be telescopic, and the smoking ring 1003 is inserted into the first sealing ring 1002 and sealed in the normal state; so that the air duct of the mounting air duct 1 is not affected in the normal state, and the stability of the equipment in use is increased; the connecting column 1001 serves as a connecting structure between the first sealing ring 1002 and the mounting ring 6, so that the telescopic hose 7 and the sealing disc 8 can be easily disassembled, and the convenience of equipment maintenance and replacement is increased.

[0038] The telescopic mechanism 10 further comprises a first screw rod 1007, a first screw sleeve 1008, a mounting block 1010, a first wire bundling ring 1011 and a second wire bundling ring 1012; the first screw rod 1007 is fixedly installed on the lower side of the second fixing ring 1006 in a circumferential direction, the first screw rod 1007 is inserted into the first fixing ring 1005, the first screw sleeve 1008 is threadedly connected to the first screw rod 1007, the outer diameter of the first fixing ring 1005 is adapted to the inner diameter of the first sealing ring 1002, the two groups of mounting blocks 1010 are fixedly installed on the sealing disc 8, one end of the cable 1014 is arranged on the mounting block 1010, the two groups of first wire bundling rings 1011 are fixedly installed on the upper end of the first sealing ring 1002, the second wire bundling ring 1012 is fixedly installed on the mounting ring 6; the centers of the mounting block 1010, the first wire bundling ring 1011 and the second wire bundling ring 1012 on the same side are on the same axis, and the cable 1014 is movably inserted into the first wire bundling ring 1011 and the second wire bundling ring 1012. The schematic diagram of the structure is Figure 4 and Figure 5The structure makes the cable 1014 keep vertical when the telescopic hose 7 is lifted and lowered, so that the telescopic hose 7 is more stable when being lowered and stored, and the cable 1014 is prevented from being wound during use. The lower side of the second cable ring 1012 is flush with the lower side of the winding disc 1013, so that the winding disc 1013 does not deviate during winding, further increasing the stability of the device during use.

[0039] Further, the telescopic mechanism 10 further comprises a side-mounted support 1015, a first fixed block 1016, a second screw sleeve 1017, a first insertion hole 1018 and a second screw rod 1019. The first cable ring 1011 is fixedly installed with the side-mounted support 1015, and the winding disc 1013 is rotatably installed at the bottom of the side-mounted support 1015. The lower end of the cable 1014 is fixedly installed with the first fixed block 1016, and the first fixed block 1016 is fixedly installed with the second screw sleeve 1017. The mounting block 1010 is provided with the first insertion hole 1018, and the second screw rod 1019 is movably inserted into the first insertion hole 1018. The second screw rod 1019 is screwed into the second screw sleeve 1017. The schematic diagram of the structure is Figure 4 and Figure 5 The structure makes the cable 1014 separate from the sealing disc 8, so that the telescopic hose 7 can be separated as a whole, which is convenient for disassembly and cleaning. In addition to sealing, the sealing disc 8 also has the function of counterweight, so that the telescopic hose 7 can be stretched more quickly, further increasing the stability of the device during use.

[0040] The expansion mechanism 11 comprises a drive gear 1101, a connecting long plate 1105 and a tooth 1106. The drive gear 1101 is rotatably installed at the center of the left and right sides of the outer wall of the air cylinder 1. The two sides of the movable outer cylinder 5 are respectively connected with one end of the connecting long plate 1105. The connecting long plate 1105 is fixedly installed with a row of teeth 1106 along the length direction. The two groups of connecting long plates 1105 on the same side are located above and below the drive gear 1101 on the same side and are engaged with the drive gear 1101 on the same side through the teeth 1106. Through the rotation of the drive gear 1101, the two groups of connecting long plates 1105 are driven to move in opposite directions, so that the movable outer cylinder 5 on both sides of the installation air cylinder 1 is expanded or overlapped along the outer wall of the sound-absorbing inner cylinder 4.

[0041] The unfolding mechanism 11 further comprises a first bevel gear 1102, a second bevel gear 1103 and a second fixed block 1104; the two groups of drive gears 1101 are each fixedly installed with the first bevel gear 1102; the drive motor 9 is a double-shaft motor, and the output shaft on the upper side of the drive motor 9 is fixedly installed with the second bevel gear 1103; the first bevel gear 1102 and the second bevel gear 1103 are engaged; the two sides of the movable outer cylinder 5 are each fixedly installed with the second fixed block 1104; and the end of the connecting long plate 1105 is connected with the second fixed block 1104. The schematic diagram of the structure is Figure 6 and Figure 9 The structure enables the movable outer cylinder 5 to be unfolded under the driving of the drive motor 9 and linked with the lowering of the flexible hose 7, so that the device has the ability to quickly respond to smoke, and the driven unfolding mechanism 11 has two groups and is symmetrically distributed on the two sides of the mounting cylinder 1, so that the movement of the movable outer cylinder 5 and the stretching of the flexible hose 7 are easier and more stable, and the stability of the structure during movement is increased.

[0042] Further, the unfolding mechanism 11 further comprises a first long plate 1107, a second long plate 1108, a drag-reducing ball 1109, a rolling groove 1110 and a third sealing ring 1111; the inner side of the movable outer cylinder 5 is symmetrically fixedly installed with two groups of the first long plate 1107; the outer side of the sound-absorbing inner cylinder 4 is fixedly installed with two groups of the second long plate 1108; the lower side of the first long plate 1107 is arrayed with the drag-reducing ball 1109; the upper side of the second long plate 1108 is provided with the rolling groove 1110; the drag-reducing ball 1109 rolls in the rolling groove 1110; the end of the movable outer cylinder 5 is fixedly installed with the third sealing ring 1111; and the third sealing ring 1111 abuts against the end of the sound-absorbing inner cylinder 4. The schematic diagram of the structure is Figure 3 and Figure 8 The structure enables the movable outer cylinder 5 and the sound-absorbing inner cylinder 4 to be supported by the first long plate 1107 and the second long plate 1108, without contacting each other, so as to have the ability to absorb sound in the combined state; the first long plate 1107 and the second long plate 1108 can relatively displace by rolling, so that the movement of the movable outer cylinder 5 is smoother and is not prone to jamming; and the third sealing ring 1111 can seal the space between the sound-absorbing inner cylinder 4 and the movable outer cylinder 5, so as to effectively reduce the entry of dust and the occurrence of blockage.

[0043] Further, the unfolding mechanism 11 further comprises limiting plug blocks 1112, third screw sleeves 1113, limiting plug slots 1114, second plug holes 1115 and third screw rods 1116; one end of the sound attenuation inner cylinder 4 is fixedly installed with four groups of limiting plug blocks 1112, the limiting plug blocks 1112 are fixedly installed with third screw sleeves 1113, the two sides of the air duct 1 are evenly provided with four groups of limiting plug slots 1114, the limiting plug slots 1114 are provided with second plug holes 1115, the limiting plug blocks 1112 are plugged into the limiting plug slots 1114, the third screw rods 1116 are movably plugged into the second plug holes 1115, and the third screw rods 1116 are screwed into the third screw sleeves 1113. The schematic diagram of the structure is Figure 2 、 Figure 3 and Figure 6 The structure makes the sound attenuation inner cylinder 4 be able to be disassembled, the movable outer cylinder 5 is movably installed on the sound attenuation inner cylinder 4 but is not limited, the limiting structure is integrated in the part of the connecting long plate 1105, so that the movable outer cylinder 5 can be directly disassembled by sliding after the sound attenuation inner cylinder 4 is disassembled, the convenience when the equipment is disassembled is increased, and the sound attenuation inner cylinder 4 is more convenient to disassemble in this installation mode.

[0044] Further, the unfolding mechanism 11 further comprises sliding grooves 1117, sliding blocks 1118, limiting grooves 1119 and limiting blocks 1120; the connecting long plate 1105 is provided with sliding grooves 1117, the two sides of the air duct 1 are fixedly installed with two groups of sliding blocks 1118, the sliding blocks 1118 slide in the sliding grooves 1117, the upper and lower sides of the sliding blocks 1118 are provided with limiting grooves 1119, and the sliding grooves 1117 are fixedly installed with two groups of limiting blocks 1120, and the limiting blocks 1120 are plugged into the limiting grooves 1119. The schematic diagram of the structure is Figure 6 and Figure 10 The length of the connecting long plate 1105 and the length of the movable outer cylinder 5 are matched, so that the movable outer cylinder 5 is completely unfolded, and the mutual limiting between the limiting blocks 1120 and the limiting grooves 1119 can make the teeth 1106 not be separated from the driving gear 1101, and the stability when the equipment is used can be increased. Figure 10 It can be known that the limiting blocks 1120 do not completely fill the sliding grooves 1117, the length of the remaining part is matched with the length of the sliding blocks 1118, so that the connecting long plate 1105 can be separated when it is no longer fixed on the movable outer cylinder 5, and the stability when the equipment is used and the convenience when the equipment is disassembled are increased.

[0045] Further, the unfolding mechanism 11 further comprises a clamping block 1121, a fourth threaded sleeve 1122, a clamping frame 1123, a third insertion hole 1124 and a fourth screw rod 1125; the clamping block 1121 is fixedly installed on the second fixed block 1104, the fourth threaded sleeve 1122 is fixedly installed in the clamping block 1121, one end of the connecting long plate 1105 is fixedly installed with the clamping frame 1123, the clamping block 1121 is inserted in the clamping frame 1123, the third insertion hole 1124 is formed in the clamping frame 1123, and the fourth screw rod 1125 is movably inserted in the third insertion hole 1124 and is screwed in the fourth threaded sleeve 1122. The schematic diagram of the structure is Figure 9 The clamping block 1121 functions to prevent the connecting long plate 1105 from rotating, and this fixing mode is simple, and in combination with the groove matched with the length of the sliding block 1118 mentioned above, the connecting long plate 1105 can be conveniently disassembled while stability is ensured.

[0046] The two sides of the hoisting block 12 are fixedly installed with L-shaped plates 13, the end of the L-shaped plate 13 is fixedly installed with two groups of fifth screw rods 14, the two groups of movable outer cylinders 5 are fixedly installed with hoisting plates 15, the hoisting plates 15 are provided with two groups of hoisting holes 16, and the positions of the hoisting holes 16 are opposite to those of the fifth screw rods 14. The schematic diagram of the structure is Figure 6 Since the relative displacement between the movable outer cylinder 5 and the sound-absorbing inner cylinder 4 will cause the first long plate 1107 and the second long plate 1108 to relatively disengage, the structure is arranged to enable the movable outer cylinder 5 to be hoisted by the fifth screw rod 14 inserted in the hoisting hole 16 when the movable outer cylinder 5 is displaced to a certain extent, thereby increasing the stability of the movable outer cylinder 5 after displacement, and the structure can be used for auxiliary disassembly of the movable outer cylinder 5 and the sound-absorbing inner cylinder 4, for example, the movable outer cylinder 5 is hoisted on the L-shaped plate 13 during disassembly, and then is locked by a threaded sleeve for auxiliary disassembly.

[0047] The working principle of the tunnel reversing ventilation device provided in the embodiment is as follows:

[0048] When the ventilation and exhaust need to be performed in time, the staff starts the driving motor 9, the two groups of driving motors 9 are synchronously operated, the output shaft at the lower side of the driving motor 9 rotates to drive the winding disc 1013 to rotate, the winding disc 1013 releases the cable 1014 when rotating, the smoke suction ring 1003 is pulled to descend under the action of the weight of the sealing disc 8, the telescopic hose 7 is pulled to elongate, the smoke suction ring 1003 approaches the smoke point, the ventilation motor 2 and the ventilation fan blade 3 normally operate, the air flow speed in the installation air duct 1 is kept high, thereby the air in the telescopic hose 7 is sucked, and then the smoke around the smoke suction ring 1003 is sucked, the smoke enters the smoke suction groove 1004, passes through the telescopic hose 7, enters the installation air duct 1 through the installation ring 6, and is then taken away by the flowing air.

[0049] The output shaft on the upper side of the driving motor 9 rotates, the second bevel gear 1103 drives the first bevel gear 1102 to rotate, and then drives the driving gear 1101 to rotate, which drives the two groups of connecting long plates 1105 on the same side to move relative to each other through the meshing between the driving gear 1101 and the teeth 1106, thereby pushing the two groups of movable outer cylinders 5 to move towards each other. At this time, the first long plate 1107 moves relative to the second long plate 1108, and the resistance-reducing balls 1109 roll in the rolling grooves 1110 until the fifth screw 14 is inserted into the lifting hole 16, that is, the extension of the movable outer cylinder 5 is completed, thereby extending the length of the entire device and reducing the escape of flue gas during transmission.

[0050] When disassembling the device, the movable outer cylinder 5 is in the state of being combined with the sound reduction inner cylinder 4, then the fourth screw 1125 is unscrewed, at this time the sliding block 1118 is at the end of the sliding groove 1117, so the limiting block 1120 is not inserted into the limiting groove 1119, at this time the connecting long plate 1105 can be directly taken out, the clamping frame 1123 is separated from the clamping block 1121, then the movable outer cylinder 5 is moved, the movable outer cylinder 5 is separated from the sound reduction inner cylinder 4, the fifth screw 14 is inserted into the lifting hole 16, then the nut is screwed on the fifth screw 14, so that the position of the movable outer cylinder 5 can be fixed, then the third screw 1116 is unscrewed, so that the limiting plug 1112 can be separated from the limiting plug groove 1114, then the sound reduction inner cylinder 4 is moved to be stored in the movable outer cylinder 5, due to the existence of the third sealing ring 1111, the sound reduction inner cylinder 4 will not slide out of the movable outer cylinder 5, at this time the installation of the chimney 1 is separated from the sound reduction inner cylinder 4 and the movable outer cylinder 5, each part can be cleaned or repaired, if it is necessary to completely disassemble the sound reduction inner cylinder 4 and the movable outer cylinder 5, the sound reduction inner cylinder 4 can be disassembled first during disassembly, when disassembling the telescopic hose 7, the second screw 1019 and the first screw sleeve 1008 can be unscrewed.

[0051] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or equipment.

[0052] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A tunnel reversing ventilation device comprising a mounting air duct (1), a ventilation motor (2) is fixedly installed in the mounting air duct (1), a ventilation fan blade (3) is fixedly installed on an output shaft of the ventilation motor (2), characterized in that, Both sides of the installation air duct (1) are provided with sound attenuation inner cylinders (4), and the two sound attenuation inner cylinders (4) are movably provided with movable outer cylinders (5); the center position of the bottom of the outer wall of the installation air duct (1) is fixedly provided with an installation ring (6), the installation ring (6) is provided with an extension hose (7) inside, the lower side of the extension hose (7) is provided with a sealing disc (8), the left and right sides of the outer wall of the installation air duct (1) are fixedly provided with drive motors (9), and the output shaft of the drive motor (9) is provided with an extension mechanism (10); the extension mechanism (10) drives the extension of the extension hose (7); the sound attenuation inner cylinder (4) and the movable outer cylinder (5) movably arranged thereon are provided with an unfolding mechanism (11), and the unfolding mechanism (11) is in transmission connection with the drive motor (9); the movable outer cylinder (5) is driven by the unfolding mechanism (11) to slide along the corresponding sound attenuation inner cylinder (4); the extension mechanism (10) comprises a winding disc (1013) and a cable (1014), when the winding disc (1013) is driven to rotate by the drive motor (9), the cable (1014) is released, so that the extension hose (7) is lowered; in the process of lowering the extension hose (7), the movable outer cylinder (5) is synchronously stretched, so that the length of the installation air duct (1) is extended; the upper end of the installation air duct (1) is fixedly provided with a hoisting block (12), and the device is fixed as a whole on the top of the tunnel through the hoisting block (12).

2. A tunnel reversing ventilation device according to claim 1, characterised in that The output shaft of the drive motor (9) is fixedly provided with a winding disc (1013), and the winding disc (1013) is provided with a cable (1014) wound thereon, and one end of the cable (1014) is arranged on the sealing disc (8).

3. A tunnel reversing ventilation device according to claim 2, characterised in that The extension mechanism (10) further comprises a connecting column (1001), a first sealing ring (1002), a smoke suction ring (1003), a smoke suction groove (1004), a first fixed ring (1005), a second fixed ring (1006) and a second sealing ring (1009); the lower side of the installation ring (6) is fixedly provided with three connecting columns (1001), the lower side of the connecting column (1001) is fixedly provided with the first sealing ring (1002), the lower side of the extension hose (7) is fixedly provided with the smoke suction ring (1003), the lower side of the smoke suction ring (1003) is fixedly provided with the sealing disc (8), the smoke suction groove (1004) is arrayed on the side wall of the smoke suction ring (1003), the smoke suction ring (1003) is movably inserted into the first sealing ring (1002), and the outer wall of the smoke suction ring (1003) is tightly combined with the inner wall of the first sealing ring (1002), the upper end of the extension hose (7) is fixedly provided with the first fixed ring (1005), the installation ring (6) is fixedly provided with the second fixed ring (1006) inside, the second fixed ring (1006) is fixedly provided with the second sealing ring (1009), and the first fixed ring (1005) is tightly combined with the second sealing ring (1009).

4. A tunnel reversing ventilation device according to claim 3, characterised in that The telescopic mechanism (10) further comprises a first screw rod (1007), a first screw sleeve (1008), a mounting block (1010), a first cable ring (1011) and a second cable ring (1012); the lower side of the second fixing ring (1006) is fixedly installed with the first screw rod (1007) in a uniform and circumferential manner, the first screw rod (1007) is inserted into the first fixing ring (1005), the first screw rod (1007) is threadedly sleeved with the first screw sleeve (1008), the outer diameter of the first fixing ring (1005) is matched with the inner diameter of the first sealing ring (1002), the sealing disc (8) is fixedly installed with two groups of mounting blocks (1010), one end of the cable (1014) is arranged on the mounting block (1010), the upper end of the first sealing ring (1002) is fixedly installed with two groups of first cable rings (1011), and the mounting ring (6) is fixedly installed with the second cable ring (1012); the mounting blocks (1010), the first cable rings (1011) and the second cable rings (1012) on the same side have the same axis at the center of the mounting blocks (1010), the first cable rings (1011) and the second cable rings (1012), and the cable (1014) is movably inserted into the first cable ring (1011) and the second cable ring (1012).

5. A tunnel reversing ventilation device according to claim 4, characterised in that The telescopic mechanism (10) further comprises a side-mounted support (1015), a first fixing block (1016), a second screw sleeve (1017), a first insertion hole (1018) and a second screw rod (1019); the first cable ring (1011) is fixedly installed with the side-mounted support (1015), the winding disc (1013) is rotatably installed at the bottom of the side-mounted support (1015), the lower end of the cable (1014) is fixedly installed with the first fixing block (1016), the first fixing block (1016) is fixedly installed with the second screw sleeve (1017) inside, the mounting block (1010) is provided with the first insertion hole (1018), the second screw rod (1019) is movably inserted into the first insertion hole (1018), and the second screw rod (1019) is threadedly installed in the second screw sleeve (1017).

6. A tunnel reversing ventilation device according to claim 1, characterised in that The unfolding mechanism (11) comprises a driving gear (1101), a first bevel gear (1102), a second bevel gear (1103), a second fixed block (1104), a connecting long plate (1105) and a tooth (1106); the driving gear (1101) is rotatably installed at the center position of the left and right sides of the outer wall of the air duct (1), one end of the connecting long plate (1105) is connected to the two sides of the movable outer cylinder (5), a row of teeth (1106) are fixedly installed on the connecting long plate (1105) along the length direction thereof, the two groups of connecting long plates (1105) on the same side are engaged with the driving gear (1101) on the same side through the teeth (1106); the first bevel gear (1102) is fixedly installed on the two groups of driving gears (1101); the driving motor (9) is a double-shaft motor, the second bevel gear (1103) is fixedly installed on the output shaft on the upper side of the driving motor (9), the first bevel gear (1102) and the second bevel gear (1103) are engaged, the second fixed block (1104) is fixedly installed on the two sides of the movable outer cylinder (5), and the end of the connecting long plate (1105) is connected to the second fixed block (1104).

7. A tunnel reversing ventilation device according to claim 6, characterised in that The unfolding mechanism (11) further comprises a first long plate (1107), a second long plate (1108), a drag-reducing ball (1109), a rolling groove (1110) and a third sealing ring (1111); the inner side of the movable outer cylinder (5) is fixedly installed with two groups of first long plates (1107) in a symmetrical manner, the outer side of the sound-absorbing inner cylinder (4) is fixedly installed with two groups of second long plates (1108), the lower side of the first long plate (1107) is rotatably installed with an array of drag-reducing balls (1109), the upper side of the second long plate (1108) is provided with a rolling groove (1110), the drag-reducing balls (1109) roll in the rolling groove (1110), the end of the movable outer cylinder (5) is fixedly installed with a third sealing ring (1111), and the third sealing ring (1111) abuts against the end of the sound-absorbing inner cylinder (4).

8. A tunnel reversing ventilation device according to claim 7, characterised in that The unfolding mechanism (11) further comprises limiting plug blocks (1112), third screw sleeves (1113), limiting plug slots (1114), second plug holes (1115), third screw rods (1116), sliding grooves (1117), sliding blocks (1118), limiting grooves (1119) and limiting blocks (1120). One end of the sound attenuation inner cylinder (4) is fixedly provided with four limiting plug blocks (1112), the limiting plug blocks (1112) are fixedly provided with third screw sleeves (1113), the two sides of the installation air duct (1) are evenly provided with four limiting plug slots (1114), the limiting plug slots (1114) are provided with second plug holes (1115), the limiting plug blocks (1112) are plugged into the limiting plug slots (1114), the second plug holes (1115) are movably provided with third screw rods (1116), and the third screw rods (1116) are screwed into the third screw sleeves (1113). The connecting long plate (1105) is provided with a sliding groove (1117), the two sides of the installation air duct (1) are fixedly provided with two groups of sliding blocks (1118), the sliding blocks (1118) slide in the sliding groove (1117), the upper and lower sides of the sliding blocks (1118) are provided with limiting grooves (1119), the sliding groove (1117) is fixedly provided with two groups of limiting blocks (1120), and the limiting blocks (1120) are plugged into the limiting grooves (1119).

9. A tunnel reversing ventilation device according to claim 8, characterised in that The unfolding mechanism (11) further comprises clamping blocks (1121), fourth screw sleeves (1122), clamping frames (1123), third plug holes (1124) and fourth screw rods (1125). The second fixed blocks (1104) are fixedly provided with clamping blocks (1121), the clamping blocks (1121) are fixedly provided with fourth screw sleeves (1122), one end of the connecting long plate (1105) is fixedly provided with a clamping frame (1123), the clamping blocks (1121) are plugged into the clamping frame (1123), the clamping frame (1123) is provided with third plug holes (1124), the third plug holes (1124) are movably provided with fourth screw rods (1125), and the fourth screw rods (1125) are screwed into the fourth screw sleeves (1122).

10. A tunnel reversing ventilation device according to claim 1, characterised in that The two sides of the hoisting block (12) are fixedly provided with L-shaped plates (13), the ends of the L-shaped plates (13) are fixedly provided with two groups of fifth screw rods (14), the two groups of movable outer cylinders (5) are fixedly provided with hoisting plates (15), the hoisting plates (15) are provided with two groups of hoisting holes (16), and the positions of the hoisting holes (16) are opposite to those of the fifth screw rods (14).

Images