Highway tunnel fan and vibration isolation device thereof

Abstract

The invention relates to a highway tunnel draught fan and a vibration isolation device thereof, and belongs to the technical field of tunnel draught fan installing.A transverse damping unit and a vertical spring set are arranged, and the draught fan is connected with a vertical rod through a cross beam, so that transverse acting force and vertical acting force generated when the draught fan works are absorbed by the transverse damping unit and the vertical spring set correspondingly; therefore, it is guaranteed that the vibration isolation shell does not shake along with vibration generated by working of the fan, fixing bolts connected to the vibration isolation shell do not loosen, and the problem that due to the fact that vibration generated during working of the fan has radial acting force and transverse acting force, an existing fan vibration isolation device is not prone to shaking due to vibration generated during working of the fan is solved. The problems that only radial acting force between the draught fan and the vibration isolation device can be weakened by arranging the springs, but transverse acting force cannot be solved, so that the vibration isolation device shakes left and right along with work of the draught fan, and the risk that bolts installed on the vibration isolation device loosen is increased are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel fan installation, and in particular relates to a highway tunnel fan and a vibration isolation device thereof. Background Art

[0002] Tunnels are engineering structures buried in the ground and are a form of human use of underground space. Tunnels can be divided into traffic tunnels, hydraulic tunnels, municipal tunnels, mining tunnels and military tunnels. In tunnels, especially in traffic tunnels, in order to discharge carbon dioxide, sulfur dioxide and other waste gases in the tunnel and introduce fresh air from the outside, it is usually necessary to install several tunnel fans on the top wall of the tunnel in sequence for ventilation.

[0003] For example, the invention patent with patent application publication number: CN115217507A discloses a vibration isolation installation device for a tunnel fan, which includes a vibration isolation connection device, and two groups of vertical vibration isolation groups are arranged in the housing of the vibration isolation connection device, so as to effectively bear the vertical load. In addition, by arranging the second vertical vibration isolation group inside the first vertical vibration isolation group, and making the radial outer side of the elastic sleeve of the second vertical vibration isolation group keep in contact with the radial inner side of the annular spring of the first vertical vibration isolation group, the elastic sleeve and the annular spring form an integral vibration isolation part in the radial direction, and then when a radial load occurs, the radial load can be attenuated by the radial contact between the elastic sleeve and the annular spring.

[0004] Based on the search of the publication number of the above patent application and the shortcomings found therein:

[0005] Since the vibration generated when the fan is working has both radial force and lateral force, the existing fan vibration isolation device can only reduce the radial force between the fan and the vibration isolation device by providing a spring, but cannot solve the lateral force, so that the vibration isolation device shakes left and right following the operation of the fan, increasing the risk of the bolts installed on the vibration isolation device loosening. Summary of the invention

[0006] In order to solve the problem that the vibration generated by the fan when it is working has both radial force and lateral force, the existing fan vibration isolation device can only weaken the radial force between the fan and the vibration isolation device by providing a spring, but cannot solve the lateral force, so that the vibration isolation device shakes left and right following the operation of the fan, increasing the risk of bolts installed on the vibration isolation device loosening. The present invention provides a highway tunnel fan and a vibration isolation device thereof.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A highway tunnel fan and a vibration isolation device thereof, comprising a hollow vibration isolation shell, two lateral shock absorbing units, two vertical spring groups and a fan; the vibration isolation shell is arranged at the top of the tunnel, a connecting groove is centrally provided at the bottom of the vibration isolation shell, and the connecting groove is connected to the internal space of the vibration isolation shell;

[0009] Shock-absorbing grooves are symmetrically provided at both ends of the bottom of the vibration isolation shell, and the two shock-absorbing grooves are respectively communicated with the connecting grooves; the two lateral shock-absorbing units are matched with the two shock-absorbing grooves one by one, and any lateral shock-absorbing unit is arranged in the corresponding shock-absorbing groove; the lateral shock-absorbing unit includes a shock-absorbing spring and a shock-absorbing block, the shock-absorbing block is slidably and sealedly arranged in the shock-absorbing groove, and the two ends of the shock-absorbing spring are respectively connected to the shock-absorbing block and the vibration isolation shell; it also includes a crossbeam and a vertical rod, the vertical rod is vertically and equally arranged at the bottom end of the crossbeam, and the other end of the vertical rod is connected to the fan, the crossbeam is centrally arranged in the vibration isolation shell, and the two groups of vertical spring groups are symmetrically arranged at the two ends of the crossbeam, and the two ends of the vertical spring group are respectively connected to the vibration isolation shell and the crossbeam; there is a shock-absorbing space between the two shock-absorbing blocks, the vertical rod slides in the shock-absorbing space, and the two end faces of the vertical rod are respectively fitted with the end faces of the two shock-absorbing blocks.

[0010] As a preferred technical solution of the present invention, the vertical spring group includes a plurality of vertical springs, and the plurality of vertical springs are arranged at equal intervals along an axial direction perpendicular to the crossbeam, and two ends of the vertical springs are respectively connected to the vibration isolation shell and the crossbeam.

[0011] As a preferred technical solution of the present invention, it also includes two groups of fixing bolt groups, which are symmetrically arranged at both ends of the vibration isolation shell; the fixing bolt group includes a plurality of fixing bolts, and the plurality of fixing bolts are evenly spaced and penetrate the vibration isolation shell at the top of the tunnel along the axial direction perpendicular to the crossbeam.

[0012] As a preferred technical solution of the present invention, the vibration isolation shell is further provided with a hydraulic groove, which is respectively communicated with the two shock absorbing grooves and further comprises hydraulic oil, which is sealed and filled in the hydraulic groove.

[0013] As a preferred technical solution of the present invention, the top of the vibration isolation shell also includes a pressing groove, a pressing block, a pressing spring and a pressing module. The pressing groove is communicated with the hydraulic groove, the pressing block is slidably and sealedly arranged in the pressing groove, the two ends of the pressing spring are respectively connected to the pressing block and the vibration isolation shell, the pressing module is arranged in the pressing groove, the pressing module is communicatively connected to the fan, and the pressing block can lock or release its abutting relationship with the pressing module.

[0014] As a preferred technical solution of the present invention, it also includes a plurality of abutment blocks, the vibration isolation shell is provided with a plurality of abutment grooves, the plurality of abutment grooves are matched one-to-one with a plurality of abutment blocks and a plurality of fixing bolts, any of the abutment grooves are respectively communicated with the corresponding fixing bolts and the hydraulic grooves, the abutment blocks are slidably and sealedly arranged in the corresponding abutment grooves, and one end of the abutment block is abutted against the side wall of the fixing bolt.

[0015] As a preferred technical solution of the present invention, the abutment block is inclined near the top of one end of the fixing bolt, and the fixing bolt is provided with an inclined groove. The fixing bolt is fitted with the top of the abutment block through the inclined groove, and the fixing bolt can lock or release its fitting relationship with the abutment block.

[0016] As a preferred technical solution of the present invention, the abutment block is provided with a pressure relief groove, the pressure relief groove includes a pressure relief inlet and a pressure relief outlet, the pressure relief inlet is communicated with the hydraulic groove, the vibration isolation shell is provided with a plurality of oil drain holes, the plurality of oil drain holes are matched one-to-one with a plurality of abutment blocks, and the pressure relief outlet can lock or release its connection with the corresponding oil drain hole.

[0017] The beneficial effects of the present invention are:

[0018] The present invention is provided with a lateral shock absorbing unit and a vertical spring group. The fan is connected by a horizontal beam and a vertical rod, so that the lateral force and vertical force generated by the fan during operation are absorbed by the lateral shock absorbing unit and the vertical spring group respectively, thereby ensuring that the vibration isolation shell will not shake due to the vibration generated by the operation of the fan, and the fixing bolts connected to the vibration isolation shell will not loosen. This solves the problem that the vibration generated by the fan during operation has both radial force and lateral force. The existing fan vibration isolation device can only weaken the radial force between the fan and the vibration isolation device by providing a spring, but cannot solve the lateral force, so that the vibration isolation device shakes left and right following the operation of the fan, increasing the risk of bolts installed on the vibration isolation device loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0020] Figure 1 A cross-sectional view of a highway tunnel fan and a lateral vibration-absorbing unit of a vibration isolation device thereof according to the present invention;

[0021] Figure 2 For the present invention Figure 1 A magnified image of point A;

[0022] Figure 3A cross-sectional view of a hydraulic tank of a highway tunnel fan and a vibration isolation device thereof according to the present invention;

[0023] Figure 4 For the present invention Figure 3 A magnified view of point B;

[0024] Figure 5 For the present invention Figure 3 Enlarged view of point C.

[0025] Description of main symbols

[0026] In the figure: 1. Vibration isolation shell; 2. Fan; 3. Lateral shock absorbing unit; 301. Shock absorbing spring; 302. Shock absorbing block; 4. Crossbeam; 5. Vertical rod; 6. Vertical spring; 7. Fixing bolt; 8. Hydraulic groove; 9. Pressing groove; 10. Pressing block; 11. Pressing spring; 12. Pressing module; 13. Abutment block; 14. Pressure relief groove; 1401. Pressure relief inlet; 1402. Pressure relief outlet; 15. Oil drain hole. DETAILED DESCRIPTION

[0027] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0028] See also Figure 1-5 The present embodiment provides a highway tunnel fan and a vibration isolation device thereof, comprising a vibration isolation shell 1 with a hollow interior, two lateral damping units 3, two vertical spring groups 6 and a fan 2; the vibration isolation shell 1 is arranged at the top of the tunnel, a connecting groove is centrally provided at the bottom of the vibration isolation shell 1, and the connecting groove is connected to the internal space of the vibration isolation shell 1;

[0029] The two ends of the bottom of the vibration isolation shell 1 are symmetrically provided with shock absorbing grooves, and the two shock absorbing grooves are respectively connected with the connecting grooves; the two lateral shock absorbing units 3 are respectively matched with the two shock absorbing grooves, and any lateral shock absorbing unit 3 is arranged in the corresponding shock absorbing groove; the lateral shock absorbing unit 3 includes a shock absorbing spring 301 and a shock absorbing block 302, the shock absorbing block 302 is slidably sealed and arranged in the shock absorbing groove, and the two ends of the shock absorbing spring 301 are respectively connected to the shock absorbing block 302 and the vibration isolation shell 1; and also includes a crossbeam 4 and a vertical beam 4. Rod 5, one end of the vertical rod 5 is vertically and equally arranged at the bottom end of the beam 4, and the other end is connected to the fan 2. The beam 4 is centrally arranged in the vibration isolation shell 1, and two groups of vertical springs 6 are symmetrically arranged at the two ends of the beam 4, and the two ends of the vertical spring 6 are respectively connected to the vibration isolation shell 1 and the beam 4; there is a shock-absorbing space between the two shock-absorbing blocks 302, and the vertical rod 5 slides along the axial direction of the vertical rod 5 itself in the shock-absorbing space, and the two end faces of the vertical rod 5 are respectively in contact with the end faces of the two shock-absorbing blocks 302.

[0030] This solution is provided with a lateral shock absorbing unit 3 and 6 groups of vertical springs. The fan 2 is connected by a cross beam 4 and a vertical rod 5, so that the lateral force and vertical force generated by the fan 2 during operation are absorbed by the lateral shock absorbing unit 3 and the vertical spring 6 groups respectively, thereby ensuring that the vibration isolation shell 1 will not shake due to the vibration generated by the operation of the fan 2, and the fixing bolts 7 connected to the vibration isolation shell 1 will not loosen. This solves the problem that the vibration generated by the fan 2 during operation has both radial force and lateral force. The existing vibration isolation device for the fan 2 can only weaken the radial force between the fan 2 and the vibration isolation device by providing a spring, but cannot solve the lateral force, so that the vibration isolation device shakes left and right following the operation of the fan 2, increasing the risk of loosening of the bolts installed on the vibration isolation device.

[0031] Furthermore, the vertical spring group 6 of the present scheme includes a plurality of vertical springs 6, and the plurality of vertical springs 6 are arranged at equal intervals along an axial direction perpendicular to the crossbeam 4, and the two ends of the vertical springs 6 are respectively connected to the vibration isolation shell 1 and the crossbeam 4; the setting of the vertical springs 6 is used to reduce the radial vibration between the fan 2 and the vibration isolation shell 1 when the fan 2 is working.

[0032] Furthermore, the present scheme also includes two groups of fixing bolts 7, which are symmetrically arranged at both ends of the vibration isolation shell 1; the fixing bolts 7 include a plurality of fixing bolts 7, and the plurality of fixing bolts 7 are evenly spaced through the vibration isolation shell 1 at the top of the tunnel along the axial direction perpendicular to the crossbeam 4. By providing the fixing bolts 7, the vibration isolation shell 1 is fixed to the top of the tunnel.

[0033] Furthermore, the vibration isolation shell 1 of the present scheme is also provided with a hydraulic groove 8, which is respectively interconnected with the two shock-absorbing grooves, and also includes hydraulic oil, and the hydraulic oil is sealed and filled in the hydraulic groove 8; by providing the hydraulic oil, the two shock-absorbing blocks 302 always move in the same direction, and the distance between the two shock-absorbing blocks 302 can always be kept consistent, and the distance is the width of the vertical rod 5; during the lateral vibration of the fan 2, it is prevented that the two shock-absorbing blocks 302 cannot be fitted with the vertical rod 5 in time, thereby causing the vertical rod 5 to continuously collide with the two shock-absorbing blocks 302, thereby weakening the effect of the lateral shock-absorbing unit 3 on the vibration buffering of the fan 2.

[0034] Furthermore, the top of the vibration isolation shell 1 of the present solution also includes a pressing groove 9, a pressing block 10, a pressing spring 11 and a pressing module 12. The pressing groove 9 is interconnected with the hydraulic groove 8. The pressing block 10 is slidably and sealedly arranged in the pressing groove 9. The two ends of the pressing spring 11 are respectively connected to the pressing block 10 and the vibration isolation shell 1. The pressing module 12 is arranged in the pressing groove 9. The pressing module 12 is connected to the fan 2 in communication. The pressing block 10 can lock or release its abutting matching relationship with the pressing module 12; when the pressing block 10 locks its pressing matching relationship with the pressing module 12, the pressing module 12 can control the fan 2 to start. When the pressing block 10 releases its pressing matching relationship with the pressing module 12, the pressing module 12 controls the fan 2 to shut down. It is worth noting that when there is no leakage of hydraulic oil in the vibration isolation shell 1, the force exerted by the hydraulic oil on the pressing block 10 is equal to or greater than the force exerted by the pressing spring 11 on the pressing block 10 when the pressing block 10 locks its pressing fit relationship with the pressing module 12.

[0035] Furthermore, the present scheme also includes a plurality of abutment blocks 13, and the vibration isolation shell 1 is provided with a plurality of abutment grooves, and the plurality of abutment grooves are matched one by one with the plurality of abutment blocks 13 and the plurality of fixing bolts 7, and any abutment groove is respectively communicated with the corresponding fixing bolt 7 and the hydraulic groove 8, and the abutment block 13 is slidably and sealedly arranged in the corresponding abutment groove, and one end of the abutment block 13 is abutted against the side wall of the fixing bolt 7; through such a setting, since the hydraulic oil is filled in the hydraulic groove 8, the hydraulic oil itself has a certain pressure, and the abutment block 13 is communicated with the hydraulic oil, and one end of the abutment block 13 is abutted against the corresponding fixing bolt 7, so the abutment block 13 will provide a pressing force for the fixing bolt 7 due to the force of the hydraulic oil, so as to avoid the fixing bolt 7 from rotating and loosening after the fixing bolt 7 is installed, thereby improving the stability of the connection of the fixing bolt 7.

[0036] In addition, the abutment block 13 is inclined near the top of one end of the fixing bolt 7, and the fixing bolt 7 is provided with an inclined groove, through which the fixing bolt 7 fits with the top of the abutment block 13, and the fixing bolt 7 can lock or release its fitting relationship with the abutment block 13; specifically, when the fixing bolt 7 is installed and matched with the vibration isolation shell 1, the inclined groove of the fixing bolt 7 fits with the top inclined end of the abutment block 13; when the fixing bolt 7 is loosened and moves relative to the vibration isolation shell 1, the inclined groove of the fixing bolt 7 will release its fit with the abutment block The abutment block 13 moves along the axial direction of the abutment groove in a direction away from the fixing bolt 7 during the process of the inclined groove releasing the fitting relationship between the inclined end of the top of the connection block 13 and the inclined end of the top of the connection block 13; since the abutment block 13 of the present scheme is provided with a pressure relief groove 14, the pressure relief groove 14 includes a pressure relief inlet 1401 and a pressure relief outlet 1402, and the pressure relief inlet 1401 is connected to the hydraulic groove 8, the vibration isolation shell 1 is provided with a plurality of oil drain holes 15, and the plurality of oil drain holes 15 are matched one-to-one with the plurality of abutment blocks 13. Therefore, when the inclined groove of the fixing bolt 7 releases its fitting relationship with the inclined end of the top of the abutment block 13, the pressure relief outlet 1402 is connected to the corresponding oil leakage hole 15, and the hydraulic oil will flow out of the hydraulic groove 8 through the pressure relief outlet 1402, thereby causing the force of the hydraulic oil in the hydraulic groove 8 on the pressing block 10 to be less than the force of the pressing spring 11 on the pressing block 10, and then the pressing block 10 releases its pressing fitting relationship with the pressing module 12, so the fan 2 stops rotating; when the inclined groove of the fixing bolt 7 locks its fitting relationship with the inclined end of the top of the abutment block 13, the pressure relief outlet 1402 releases its relationship of connection with the corresponding oil leakage hole 15, and the hydraulic oil cannot flow out of the hydraulic groove 8 through the pressure relief outlet 1402. Through such a setting, when the fixing bolt 7 is loose, the fan 2 can be urgently controlled to be closed to reduce the impact of the loosening of the fixing bolt 7.

[0037] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A highway tunnel fan and its vibration isolation device, Features: It includes a vibration isolation shell with a hollow interior, two lateral shock absorbing units, two vertical spring groups and a fan; the vibration isolation shell is arranged at the top of the tunnel, a connecting groove is centrally provided at the bottom of the vibration isolation shell, and the connecting groove is connected to the internal space of the vibration isolation shell; Shock-absorbing grooves are symmetrically provided at both ends of the bottom of the vibration isolation shell, and the two shock-absorbing grooves are respectively communicated with the connecting grooves; the two lateral shock-absorbing units are matched with the two shock-absorbing grooves one by one, and any lateral shock-absorbing unit is arranged in the corresponding shock-absorbing groove; the lateral shock-absorbing unit includes a shock-absorbing spring and a shock-absorbing block, the shock-absorbing block is slidably and sealedly arranged in the shock-absorbing groove, and the two ends of the shock-absorbing spring are respectively connected to the shock-absorbing block and the vibration isolation shell; it also includes a crossbeam and a vertical rod, the vertical rod is vertically and equally arranged at the bottom end of the crossbeam, and the other end of the vertical rod is connected to the fan, the crossbeam is centrally arranged in the vibration isolation shell, and the two groups of vertical spring groups are symmetrically arranged at the two ends of the crossbeam, and the two ends of the vertical spring group are respectively connected to the vibration isolation shell and the crossbeam; there is a shock-absorbing space between the two shock-absorbing blocks, the vertical rod slides in the shock-absorbing space, and the two end faces of the vertical rod are respectively fitted with the end faces of the two shock-absorbing blocks.

2. A highway tunnel fan and a vibration isolation device thereof according to claim 1, Features: The vertical spring group includes a plurality of vertical springs, which are arranged at equal intervals along an axial direction perpendicular to the crossbeam, and two ends of the vertical springs are respectively connected to the vibration isolation shell and the crossbeam.

3. A highway tunnel fan and a vibration isolation device thereof according to claim 1, Features: It also includes two groups of fixing bolt groups, which are symmetrically arranged at both ends of the vibration isolation shell; the fixing bolt group includes a plurality of fixing bolts, and the plurality of fixing bolts are evenly spaced and penetrate the vibration isolation shell at the top of the tunnel along the axial direction perpendicular to the crossbeam.

4. A highway tunnel fan and a vibration isolation device thereof according to claim 1, Features: The vibration isolation shell is further provided with a hydraulic groove, which is communicated with the two damping grooves respectively, and also includes hydraulic oil, which is sealed and filled in the hydraulic groove.

5. A highway tunnel fan and a vibration isolation device thereof according to claim 4, Features: The top of the vibration isolation shell also includes a pressing groove, a pressing block, a pressing spring and a pressing module. The pressing groove is communicated with the hydraulic groove, the pressing block is slidably and sealedly arranged in the pressing groove, the two ends of the pressing spring are respectively connected to the pressing block and the vibration isolation shell, the pressing module is arranged in the pressing groove, the pressing module is communicatively connected to the fan, and the pressing block can lock or release its abutting relationship with the pressing module.

6. A highway tunnel fan and a vibration isolation device thereof according to claim 5, Features: It also includes a plurality of abutment blocks, the vibration isolation shell is provided with a plurality of abutment grooves, the plurality of abutment grooves are matched one-to-one with a plurality of abutment blocks and a plurality of fixing bolts, any of the abutment grooves are respectively communicated with the corresponding fixing bolts and the hydraulic grooves, the abutment blocks are slidably and sealedly arranged in the corresponding abutment grooves, and one end of the abutment block is abutted against the side wall of the fixing bolt.

7. A highway tunnel fan and a vibration isolation device thereof according to claim 6, Features: The abutment block is tilted at the top of one end close to the fixing bolt, and the fixing bolt is provided with an inclined groove. The fixing bolt fits with the top of the abutment block through the inclined groove, and the fixing bolt can lock or release its fitting relationship with the abutment block.

8. A highway tunnel fan and a vibration isolation device thereof according to claim 6, Features: The abutment block is provided with a pressure relief groove, and the pressure relief groove includes a pressure relief inlet and a pressure relief outlet. The pressure relief inlet is communicated with the hydraulic groove. The vibration isolation shell is provided with a plurality of oil drain holes, and the plurality of oil drain holes are matched one-to-one with a plurality of abutment blocks. The pressure relief outlet can lock or release its connection with the corresponding oil drain hole.

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