A vibration isolation device for a highway tunnel fan

Abstract

The present invention relates to a vibration isolation device for a highway tunnel fan, belonging to the technical field of tunnel fan installation. By providing a horizontal shock absorption unit and a vertical spring group, the fan is connected through a cross beam and a vertical rod, so that the horizontal and vertical forces generated during the operation of the fan are respectively absorbed by the horizontal shock absorption unit and the vertical spring group. Furthermore, it is ensured that the vibration isolation housing will not shake along with the vibration generated during the operation of the fan, and the fixing bolts connected to the vibration isolation housing will not become loose. This solves the problem that since the vibration generated during the operation of the fan has both radial and horizontal forces, in the existing fan vibration isolation device, by providing springs, only the radial force between the fan and the vibration isolation device can be weakened, but the horizontal force cannot be solved, resulting in the vibration isolation device shaking left and right along with the operation of the fan, increasing the risk of loosening of the bolts installed on the vibration isolation device.

Description

Technical Field

[0001] The present invention belongs to the technical field of tunnel fan installation, and particularly relates to a vibration isolation device for highway tunnel fans. Background Art

[0002] A tunnel is an engineering structure buried in the stratum and is a form of human utilization of underground space. Tunnels can be divided into traffic tunnels, hydraulic tunnels, municipal tunnels, mine tunnels, and military tunnels. In tunnels, especially in traffic tunnels, in order to discharge exhaust gases such as carbon dioxide and sulfur dioxide in the tunnel and introduce fresh air from the outside, several tunnel fans are usually installed in sequence on the top wall of the tunnel for ventilation.

[0003] For example, in the invention patent with the publication number of CN115217507A, this patent discloses a vibration isolation installation device for tunnel fans, which includes a vibration isolation connection device. By arranging two sets of vertical vibration isolation groups in the shell of the vibration isolation connection device, the vertical load can be effectively borne. And, 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, an integral vibration isolation member is formed between the elastic sleeve and the annular spring in the radial direction. Thus, when a radial load occurs, the radial load can be attenuated through the radial contact between the elastic sleeve and the annular spring.

[0004] Based on the retrieval of the above-mentioned patent publication number and combined with the deficiencies found therein:

[0005] Since the vibration generated during the operation of the fan has both radial and lateral forces, in the existing fan vibration isolation device, by setting springs, only the radial force between the fan and the vibration isolation device can be weakened, but the lateral force cannot be solved, resulting in the vibration isolation device swaying left and right following the operation of the fan, increasing the risk of loosening of the bolts installed on the vibration isolation device. Summary of the Invention

[0006] In order to solve the problem that the vibration generated during the operation of the fan has both radial and lateral forces, in the existing fan vibration isolation device, by setting springs, only the radial force between the fan and the vibration isolation device can be weakened, but the lateral force cannot be solved, resulting in the vibration isolation device swaying left and right following the operation of the fan, increasing the risk of loosening of the bolts installed on the vibration isolation device, the present invention provides a vibration isolation device for highway tunnel fans.

[0007] The object of the present invention can be achieved by the following technical solutions:

[0008] A vibration isolation device for a highway tunnel fan, comprising a vibration isolation housing with a hollow interior, two transverse shock absorption units, two vertical spring groups and a fan; the vibration isolation housing is arranged at the top inside the tunnel, a communication groove is centrally opened at the bottom of the vibration isolation housing, and the communication groove is communicated with the interior space of the vibration isolation housing;

[0009] At both ends of the bottom of the vibration isolation housing, shock absorption grooves are symmetrically opened respectively, and the two shock absorption grooves are communicated with the communication groove respectively; the two transverse shock absorption units are respectively in one-to-one correspondence and matching with the two shock absorption grooves, and any one of the transverse shock absorption units is arranged in the corresponding shock absorption groove; the transverse shock absorption unit includes a shock absorption spring and a shock absorption block, the shock absorption block is slidably and sealingly arranged in the shock absorption groove, and both ends of the shock absorption spring are respectively connected to the shock absorption block and the vibration isolation housing; it further includes a cross beam and a vertical rod, the vertical rod is vertically and bisectingly arranged at the bottom end of the cross beam, and the other end thereof is connected to the fan, the cross beam is centrally arranged inside the vibration isolation housing, and the two groups of vertical spring groups are respectively symmetrically arranged at both ends of the cross beam, and both ends of the vertical spring group are respectively connected to the vibration isolation housing and the cross beam; there is a shock absorption space between the two shock absorption blocks, the vertical rod slides in the shock absorption space, and both end faces of the vertical rod are respectively attached to the end faces of the two shock absorption blocks.

[0010] As a preferred technical solution of the present invention, the vertical spring group includes a plurality of vertical springs, the plurality of vertical springs are arranged at equal intervals along the direction perpendicular to the axis of the cross beam, and both ends of the vertical spring are respectively connected to the vibration isolation housing and the cross beam.

[0011] As a preferred technical solution of the present invention, it further includes two groups of fixing bolt groups, and the two groups of fixing bolt groups are respectively symmetrically arranged at both ends of the vibration isolation housing; the fixing bolt group includes a plurality of fixing bolts, and the plurality of fixing bolts penetrate through the vibration isolation housing at equal intervals along the direction perpendicular to the axis of the cross beam at the top inside the tunnel.

[0012] As a preferred technical solution of the present invention, the vibration isolation housing is further provided with a hydraulic groove, the hydraulic groove is respectively communicated with the two shock absorption grooves, and it further includes hydraulic oil, and the hydraulic oil is hermetically filled in the hydraulic groove.

[0013] As a preferred technical solution of the present invention, the top of the vibration isolation housing further includes a pressing groove, and it further includes 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 sealingly arranged in the pressing groove, both ends of the pressing spring are respectively connected to the pressing block and the vibration isolation housing, the pressing module is arranged in the pressing groove, the pressing module is in communication connection with the fan, and the pressing block can lock or release its abutting and matching relationship with the pressing module.

[0014] As a preferred technical solution of the present invention, it further includes a number of abutting blocks. The vibration isolation housing is provided with a number of abutting grooves, and the number of abutting grooves corresponds to and matches the number of abutting blocks and the number of fixing bolts one by one. Any one of the abutting grooves is respectively communicated with the corresponding fixing bolt and the hydraulic groove. The abutting block is slidably and sealingly arranged in the corresponding abutting groove, and one end of the abutting block abuts and fits against the side wall of the fixing bolt.

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

[0016] As a preferred technical solution of the present invention, the abutting 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 housing is provided with a number of oil drain holes, and the number of oil drain holes corresponds to and matches the number of abutting blocks one by one. The pressure relief outlet can lock or release its communication relationship with the corresponding oil drain hole.

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

[0018] In this solution, by setting a horizontal shock absorption unit and a vertical spring group, and connecting the fan through the cross beam and the vertical rod, the horizontal and vertical forces generated when the fan works are respectively absorbed by the horizontal shock absorption unit and the vertical spring group. Furthermore, it is ensured that the vibration isolation housing will not shake following the vibration generated during the operation of the fan, so that the fixing bolts connected to the vibration isolation housing will not become loose. This solves the problem that since the vibration generated when the fan works has both radial forces and horizontal forces, in the existing fan vibration isolation devices, by setting springs, only the radial force between the fan and the vibration isolation device can be weakened, but the horizontal force cannot be solved, resulting in the vibration isolation device shaking left and right following the operation of the fan, increasing the risk of loosening of the bolts installed on the vibration isolation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 It is a cross-sectional view of the horizontal shock absorption unit of a vibration isolation device for a highway tunnel fan according to the present invention;

[0021] Figure 2 For the present invention Figure 1 An enlarged view of part A;

[0022] Figure 3Cross-sectional view of the hydraulic groove of a vibration isolation device for a highway tunnel fan according to the present invention;

[0023] Figure 4 According to the present invention Figure 3 Enlarged view at position B;

[0024] Figure 5 According to the present invention Figure 3 Enlarged view at position C.

[0025] Main symbol description

[0026] In the figure: 1, vibration isolation housing; 2, fan; 3, horizontal shock absorption unit; 301, shock absorption spring; 302, shock absorption block; 4, cross beam; 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, abutting block; 14, pressure relief groove; 1401, pressure relief inlet; 1402, pressure relief outlet; 15, oil drain hole. Specific implementation manner

[0027] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following describes in detail the specific implementation manner, structure, features and their effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0028] Please refer to Figures 1-5 , this embodiment provides a vibration isolation device for a highway tunnel fan, including a vibration isolation housing 1 with a hollow interior, two horizontal shock absorption units 3, two groups of vertical springs 6 and a fan 2; the vibration isolation housing 1 is arranged at the top inside the tunnel, and a communication groove is centrally opened at the bottom of the vibration isolation housing 1, and the communication groove communicates with the internal space of the vibration isolation housing 1;

[0029] Shock absorption grooves are symmetrically opened at both ends of the bottom of the vibration isolation housing 1 respectively, and the two shock absorption grooves communicate with the communication groove respectively; the two horizontal shock absorption units 3 are respectively in one-to-one correspondence and matching with the two shock absorption grooves, and any one of the horizontal shock absorption units 3 is arranged in the corresponding shock absorption groove; the horizontal shock absorption unit 3 includes a shock absorption spring 301 and a shock absorption block 302, the shock absorption block 302 is slidably and hermetically arranged in the shock absorption groove, and both ends of the shock absorption spring 301 are respectively connected to the shock absorption block 302 and the vibration isolation housing 1; it also includes a cross beam 4 and a vertical rod 5, one end of the vertical rod 5 is vertically bisectedly arranged at the bottom end of the cross beam 4, and the other end is connected to the fan 2, the cross beam 4 is centrally arranged inside the vibration isolation housing 1, and two groups of vertical springs 6 are symmetrically arranged at both ends of the cross beam 4 respectively, and both ends of the vertical spring groups 6 are respectively connected to the vibration isolation housing 1 and the cross beam 4; there is a shock absorption space between the two shock absorption blocks 302, and the vertical rod 5 slides along the axis direction of the vertical rod 5 in the shock absorption space, and both end faces of the vertical rod 5 are respectively attached to the end faces of the two shock absorption blocks 302.

[0030] In this solution, a horizontal shock absorption unit 3 and a set of vertical springs 6 are provided. The fan 2 is connected by a cross beam 4 and a vertical rod 5, so that the horizontal and vertical forces generated when the fan 2 is working are absorbed by the horizontal shock absorption unit 3 and the set of vertical springs 6 respectively. Furthermore, it is ensured that the vibration isolation housing 1 will not shake along with the vibration generated during the operation of the fan 2, so that the fixing bolts 7 connected to the vibration isolation housing 1 will not become loose. This solves the problem that since the vibration generated when the fan 2 is working has both radial force and horizontal force, in the existing vibration isolation device for the fan 2, by setting springs, only the radial force between the fan 2 and the vibration isolation device can be weakened, but the horizontal force cannot be solved, resulting in the vibration isolation device shaking left and right along with the operation of the fan 2, increasing the risk of loosening of the bolts installed on the vibration isolation device.

[0031] Furthermore, the set of vertical springs 6 in this solution includes a number of vertical springs 6, which are arranged at equal intervals along the axis direction perpendicular to the cross beam 4. The two ends of the vertical spring 6 are respectively connected to the vibration isolation housing 1 and the cross beam 4. The setting of the vertical spring 6 is used to weaken the radial vibration between the fan 2 and the vibration isolation housing 1 when the fan 2 is working.

[0032] Furthermore, this solution also includes two sets of fixing bolts 7. The two sets of fixing bolts 7 are symmetrically arranged at both ends of the vibration isolation housing 1 respectively. The set of fixing bolts 7 includes a number of fixing bolts 7, and the number of fixing bolts 7 passes through the vibration isolation housing 1 at equal intervals along the axis direction perpendicular to the cross beam 4 on the top of the tunnel. By setting the fixing bolts 7, the vibration isolation housing 1 is fixed to the top of the tunnel.

[0033] Furthermore, a hydraulic groove 8 is also opened in the vibration isolation housing 1 of this solution. The hydraulic groove 8 is respectively communicated with the two shock absorption grooves, and it also includes hydraulic oil, which is hermetically filled in the hydraulic groove 8. By setting the hydraulic oil, it is ensured that the two shock absorption blocks 302 always move in the same direction, and the distance between the two shock absorption blocks 302 can always be kept consistent. This distance is the width of the vertical rod 5. It is avoided that during the horizontal vibration of the fan 2, the two shock absorption blocks 302 cannot be in contact with the vertical rod 5 in time, resulting in continuous impact between the vertical rod 5 and the two shock absorption blocks 302, weakening the vibration buffering effect of the horizontal shock absorption unit 3 on the fan 2.

[0034] Furthermore, the top of the vibration isolation housing 1 of this solution further includes a pressing groove 9, and also includes a pressing block 10, a pressing spring 11, and a pressing module 12. The pressing groove 9 communicates with the hydraulic groove 8. The pressing block 10 is slidably and sealingly 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 housing 1. The pressing module 12 is arranged in the pressing groove 9. The pressing module 12 is communicatively connected to the fan 2. The pressing block 10 can lock or release its abutting and mating relationship with the pressing module 12. When the pressing block 10 locks its pressing and mating 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 and mating relationship with the pressing module 12, the pressing module 12 controls the fan 2 to turn off. It should be noted that when there is no leakage of hydraulic oil in the vibration isolation housing 1, the acting force of the hydraulic oil on the pressing block 10 is equal to or greater than the acting force of the pressing spring 11 on the pressing block 10 when the pressing block 10 locks its pressing and mating relationship with the pressing module 12.

[0035] Furthermore, this solution further includes a number of abutting blocks 13. The vibration isolation housing 1 is provided with a number of abutting grooves. The number of abutting grooves, the number of abutting blocks 13, and the number of fixing bolts 7 are in one-to-one correspondence and matching. Any one of the abutting grooves communicates with the corresponding fixing bolt 7 and the hydraulic groove 8 respectively. The abutting block 13 is slidably and sealingly arranged in the corresponding abutting groove. One end of the abutting block 13 abuts and fits against the side wall of the fixing bolt 7. Through such an arrangement, since the hydraulic oil is filled in the hydraulic groove 8, the hydraulic oil itself has a certain pressure, and the abutting block 13 communicates with the hydraulic oil. One end of the abutting block 13 abuts and fits against the corresponding fixing bolt 7. Therefore, the abutting block 13 will provide a pressing force for the fixing bolt 7 due to the acting force of the hydraulic oil, avoiding the fixing bolt 7 from rotating and loosening after the fixing bolt 7 is installed, and improving the connection stability of the fixing bolt 7.

[0036] In addition, the top end of the abutting block 13 close to the fixing bolt 7 is inclined. The fixing bolt 7 is provided with an inclined groove, and the fixing bolt 7 is in fit with the top of the abutting block 13 through the inclined groove. The fixing bolt 7 can lock or release its fitting relationship with the abutting block 13. Specifically, after the fixing bolt 7 is installed and fitted with the vibration isolation housing 1, the inclined groove of the fixing bolt 7 is in fit with the inclined end of the top of the abutting block 13. When the fixing bolt 7 becomes loose and moves relative to the vibration isolation housing 1, the inclined groove of the fixing bolt 7 will release its fitting relationship with the inclined end of the top of the abutting block 13. During the process of the inclined groove releasing its fitting relationship with the inclined end of the top of the abutting block 13, the abutting block 13 will move away from the fixing bolt 7 along the axis direction of the abutting groove. Since the pressure relief groove 14 is provided in the abutting block 13 of this solution, the pressure relief groove 14 includes a pressure relief inlet 1401 and a pressure relief outlet 1402. The pressure relief inlet 1401 is communicated with the hydraulic groove 8, and the vibration isolation housing 1 is provided with a plurality of oil drain holes 15, and the plurality of oil drain holes 15 are in one-to-one correspondence with the plurality of abutting 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 abutting block 13, at this time, the pressure relief outlet 1402 is communicated with the corresponding oil drain hole 15, and the hydraulic oil will flow out of the hydraulic groove 8 through the pressure relief outlet 1402. As a result, the acting force of the hydraulic oil in the hydraulic groove 8 on the pressing block 10 is less than the acting force of the pressing spring 11 on the pressing block 10. Furthermore, the pressing block 10 releases its pressing cooperation relationship with the pressing module 12, and thus 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 abutting block 13, at this time, the pressure relief outlet 1402 releases its communication relationship with the corresponding oil drain 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 becomes loose, the fan 2 can be emergently controlled to close, reducing the influence of the loosening of the fixing bolt 7.

[0037] The above is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to obtain an equivalent embodiment with equivalent changes, but as long as it does not depart from the technical content of the present invention, any brief modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A vibration isolation device for a highway tunnel fan, characterized in that: It includes a vibration isolation housing with a hollow interior, two lateral shock absorption units, and two vertical spring groups; the vibration isolation housing is arranged at the top inside the tunnel, a communication groove is centrally opened at the bottom of the vibration isolation housing, and the communication groove communicates with the interior space of the vibration isolation housing; At both ends of the bottom of the vibration isolation housing, shock absorption grooves are symmetrically opened respectively, and the two shock absorption grooves communicate with the communication groove respectively; the two lateral shock absorption units are respectively in one-to-one correspondence and matching with the two shock absorption grooves, and any one of the lateral shock absorption units is arranged in the corresponding shock absorption groove; the lateral shock absorption unit includes a shock absorption spring and a shock absorption block, the shock absorption block is slidably and sealingly arranged in the shock absorption groove, and both ends of the shock absorption spring are respectively connected to the shock absorption block and the vibration isolation housing; it also includes a cross beam and a vertical rod, the vertical rod is vertically bisectingly arranged at the bottom end of the cross beam, and the other end thereof is connected to the fan, the cross beam is centrally arranged inside the vibration isolation housing, and the two vertical spring groups are symmetrically arranged at both ends of the cross beam respectively, and both ends of the vertical spring group are respectively connected to the vibration isolation housing and the cross beam; there is a shock absorption space between the two shock absorption blocks, the vertical rod slides in the shock absorption space, and both end faces of the vertical rod are respectively in contact with the end faces of the two shock absorption blocks; The vibration isolation housing is also provided with a hydraulic groove, the hydraulic groove communicates with the two shock absorption grooves respectively, and it also includes hydraulic oil, and the hydraulic oil is hermetically filled in the hydraulic groove; The top of the vibration isolation housing also includes a pressing groove, and it also includes a pressing block, a pressing spring and a pressing module, the pressing groove communicates with the hydraulic groove, the pressing block is slidably and sealingly arranged in the pressing groove, both ends of the pressing spring are respectively connected to the pressing block and the vibration isolation housing, the pressing module is arranged in the pressing groove, the pressing module is communicatively connected with the fan, and the pressing block can lock or release its abutting and matching relationship with the pressing module; The two shock absorption blocks always move in the same direction, and the distance between the two shock absorption blocks can always be kept consistent; When there is no leakage of hydraulic oil in the vibration isolation housing, the acting force of the hydraulic oil on the pressing block is equal to or greater than the acting force of the pressing spring on the pressing block when the pressing block locks its pressing and matching relationship with the pressing module.

2. The vibration isolation device for a highway tunnel fan according to claim 1, characterized in that: The vertical spring group includes a plurality of vertical springs, and the plurality of vertical springs are arranged at equal intervals along the direction perpendicular to the axis of the cross beam, and both ends of the vertical spring are respectively connected to the vibration isolation housing and the cross beam.

3. The vibration isolation device for a highway tunnel fan according to claim 1, wherein: It also includes two groups of fixing bolt groups, and the two groups of fixing bolt groups are symmetrically arranged at both ends of the vibration isolation housing respectively; the fixing bolt group includes a plurality of fixing bolts, and the plurality of fixing bolts penetrate through the vibration isolation housing at equal intervals along the direction perpendicular to the axis of the cross beam at the top inside the tunnel.

4. The vibration isolation device for a highway tunnel fan according to claim 3, characterized in that: It also includes a plurality of abutting blocks, the vibration isolation housing is provided with a plurality of abutting grooves, the plurality of abutting grooves are in one-to-one correspondence and matching with the plurality of abutting blocks and the plurality of fixing bolts respectively, any one of the abutting grooves communicates with the corresponding fixing bolt and the hydraulic groove respectively, the abutting block is slidably and sealingly arranged in the corresponding abutting groove, and one end of the abutting block is in abutting contact with the side wall of the fixing bolt.

5. The vibration isolation device for a highway tunnel fan according to claim 4, characterized in that: One end of the abutting block near the fixing bolt is inclined, the fixing bolt is provided with an inclined groove, the fixing bolt is attached to the top of the abutting block through the inclined groove, and the fixing bolt can lock or release its fitting relationship with the abutting block.

6. The vibration isolation device of a highway tunnel fan according to claim 4, characterized in that: The abutting 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 housing is provided with a plurality of oil drain holes, and the plurality of oil drain holes are in one-to-one correspondence with the plurality of abutting blocks. The pressure relief outlet can lock or release its communication relationship with the corresponding oil drain hole.

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