A tuned mass damper for a chimney

Abstract

The application discloses a chimney tuned mass damper. The chimney tuned mass damper comprises a mounting main plate, four adjusting structures are fixedly installed on the top of the mounting main plate, and the four adjusting structures comprise first damping pipes. In the application, when different intensity impacts are coped with, the rotating rod drives the gear to rotate by rotating the rotating valve, the telescopic rod moves up and down in the first damping pipe because the gear and the teeth of the telescopic rod are engaged, the length of the air column in the first damping pipe is changed because the sealing gasket is sealed with the first damping pipe when the telescopic rod moves in the first damping pipe, the damping force generated when the first spring drives the damping rod to compress is changed, different intensity impacts can be coped with, the damping intensity can be adjusted according to different impact intensities, and thus the purpose of adjusting the damping intensity according to different impact intensities is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tuned damper, in particular to a chimney tuned mass damper. BACKGROUND

[0002] A chimney is a structure for providing ventilation to a boiler, furnace, oven or stove, which releases smoke or fumes as a byproduct of burning combustion. A chimney is often vertical or as close to it as possible, to ensure the smooth flow of gases, drawing in air into the so-called chimney draft or chimney effect. The space inside the chimney is called a flue. Chimneys can be found on buildings, steam locomotives and ships. A tuned mass damper TMD is composed of a mass, a spring and a damping system; by adjusting its vibration frequency to the vicinity of the main structure frequency, it changes the resonance characteristics of the structure, so as to achieve the effect of shock absorption.

[0003] At present, the existing chimney tuned mass damper does not have effective damping force adjustment for different intensity impacts when in use, so that the impact on the chimney body cannot be buffered in time and effectively under some natural disasters, so that the chimney body is damaged. At the same time, due to the small size of the damper body and the large size of the chimney, the maximum impact that the damper body can withstand is limited, so people need to use more dampers when installing, which increases the use cost, and the existing tuned mass damper only has lateral buffering, but lacks longitudinal buffering capacity, so that the chimney cannot be buffered when subjected to longitudinal impact. Therefore, a new device needs to be designed to solve the above problems. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the defects of the prior art, the purpose of the present application is to provide a chimney tuned mass damper, which can adjust the damping strength according to different impact strength, has additional damping force, improves the buffering effect, and has longitudinal buffering capacity.

[0006] (II) Technical solutions

[0007] In order to achieve the above-mentioned purpose, the chimney damper of the present application is characterized in that: a chimney damper comprises a mounting main plate, four adjusting structures are fixedly installed on the top of the mounting main plate, four first damping pipes are provided with side grooves on one side, two extension blocks are fixedly installed on the outer surface of the first damping pipe, a rotating rod one is fixedly sleeved in the inside of the two extension blocks, a gear is fixedly sleeved on the outer surface of the rotating rod one, a rotating valve is fixedly sleeved on the outer surface of the rotating rod one, a plurality of grooves are formed on the outer surface of the rotating valve, a first spring is fixedly installed on the top of the outer surface of the first damping pipe, a connecting column is fixedly installed on the top of the outer surface of the first spring, a damping rod one is fixedly installed on the bottom of the connecting column, a pressing plate is fixedly installed on the bottom of the damping rod one, a telescopic rod is movably sleeved in the inside of the first damping pipe, a sealing gasket is fixedly installed on the top of the telescopic rod, and the sealing gasket is sealingly connected with the first damping pipe.

[0008] As a preferred scheme, four locking structures are fixedly installed on the top of the mounting main plate, the four locking structures comprise a support seat one, a rotating rod two is fixedly sleeved in the inside of the support seat one, and a clamping block is hingedly installed in the inside of the rotating rod two.

[0009] As a preferred scheme, a pressing block is fixedly installed on one side of the outer surface of the clamping block, a second spring is fixedly installed on the bottom of the outer surface of the pressing block, and the second spring is fixedly connected with the mounting main plate.

[0010] As a preferred scheme, a top plate is fixedly installed in the inside of the four connecting columns, a curved spring plate is fixedly installed on the top of the outer surface of the top plate, and a counterweight is fixedly installed on the bottom of the top plate.

[0011] As a preferred scheme, an auxiliary structure is fixedly installed on the top of the outer surface of the mounting main plate, the auxiliary structure comprises a sliding rail, a sleeve is fixedly installed in the inside of the sliding rail, and a third spring is fixedly sleeved on the outer surface of the sleeve.

[0012] As a preferred scheme, sliding blocks are fixedly installed on both ends of the outer surface of the third spring, the two sliding blocks are slidingly connected with the sleeve, hinged seats one are fixedly installed on the top of the two sliding blocks, and a hinged rod is hingedly installed in the inside of the two hinged seats one.

[0013] As a preferred scheme, hinged seats two are fixedly installed on both sides of the bottom of the outer surface of the counterweight, the two hinged seats two are hingedly connected with the hinged rod, four fourth springs are fixedly installed on the bottom of the counterweight, and the four fourth springs are fixedly connected with the mounting main plate.

[0014] As a preferred scheme, the outer surface of the counterweight is fixedly provided with two longitudinal buffer structures on both sides, and the two longitudinal buffer structures comprise a second damping pipe, the top of the outer surface of the second damping pipe is fixedly provided with a fifth spring, and the top of the outer surface of the fifth spring is fixedly provided with a connecting plate.

[0015] As a preferred scheme, the bottom of the connecting plate is fixedly provided with a damping rod two, the damping rod two is sealed in the second damping pipe, and the top of the connecting plate is fixedly provided with an L-shaped sensing plate.

[0016] As a preferred scheme, the bottom of the mounting main plate is fixedly provided with a bottom plate, both sides of the bottom of the bottom plate are fixedly provided with T-shaped plates, a stable block is threadedly mounted in the T-shaped plates, and the bottom of the outer surface of the stable block is welded with a mounting screw plate.

[0017] As a preferred scheme, the top of one of the T-shaped plates is fixedly provided with a connecting rod, the top of the outer surface of the connecting rod is fixedly provided with a cantilever arm, the bottom of the cantilever arm is fixedly provided with a supporting rod, and the self-vibration circular frequency of the device is: The displacement of the device under the action of inertial force is: Therefore, the self-vibration frequency calculation formula of the device is:

[0018]

[0019] (Three) beneficial effects

[0020] Compared with the prior art, the chimney tuned mass damper has the following advantages

[0021] Beneficial effects:

[0022] 1. In the present application, when dealing with different intensity impacts, the rotating rod one drives the gear to rotate by rotating the rotating valve, the gear and the teeth of the telescopic rod are meshed, so that the telescopic rod can move up and down in the first damping pipe when the gear rotates, the sealing gasket is sealed with the first damping pipe, so that the length of the air column in the first damping pipe can be changed when the telescopic rod moves in the first damping pipe, thereby the damping force generated when the first spring drives the damping rod one to compress can be changed, so that different intensity impacts can be dealt with, after adjustment, the clamping block is rotated on the outer surface of the rotating rod two by stretching the second spring, so that the clamping block is clamped in the groove of the rotating valve, thereby the rotating valve can be locked to prevent the device from being misrotated during work, thereby affecting the buffering work, thereby achieving the purpose of adjusting the damping strength according to different impact strengths.

[0023] 2、in this application, by the auxiliary structure, when the device is working, through the curved elastic sheet and the inner wall of the chimney contact, after the impact, the curved elastic sheet drives the counterweight to press down, at this time, due to the hinge of the hinge rod, when the counterweight presses down, it causes two hinge rods to extrude the sliding block at the same time, at this time, two sliding blocks slide to the inside on the outer surface of the sleeve, the third spring is extruded and shrinks, when it shrinks to the limit, it pops out, the elastic force generated and the impact force received partially offset, so as to improve the buffering effect, achieves the purpose of additional damping force;

[0024] 3、in this application, through the longitudinal buffering structure, when installing the whole device, two installation grooves are opened on the inner wall of the chimney on both sides, at this time, the L-shaped sensing plate is inserted into the groove, when the chimney is subjected to longitudinal impact force, through the contraction of the fifth spring, the damping rod two is pressed in the sealed second damping pipe to offset the impact, thus achieving the ability of the device to have longitudinal buffering. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 it is the appearance structure schematic diagram of the present application;

[0026] Figure 2 it is the curved elastic sheet schematic diagram of the present application;

[0027] Figure 3 it is the adjusting structure schematic diagram of the present application;

[0028] Figure 4 it is the locking structure schematic diagram of the present application;

[0029] Figure 5 it is the curved elastic sheet structure schematic diagram of the present application;

[0030] Figure 6 it is the auxiliary structure schematic diagram of the present application;

[0031] Figure 7 it is the longitudinal buffering structure schematic diagram of the present application;

[0032] Figure 8 it is the connecting structure schematic diagram of the present application.

[0033] In the figure: 1, the installation mainboard; 2, the adjusting structure; 21, the first damping pipe; 22, the side groove; 23, the extension block; 24, the rotating rod one; 25, the gear; 26, the rotating valve; 27, the first spring; 28, the connecting column; 29, the damping rod one; 210, the pressing plate; 211, the telescopic rod; 212, the sealing gasket; 3, the locking structure; 31, the support seat one; 32, the rotating rod two; 33, the clamping block; 34, the pressing block; 35, the second spring; 4, the top plate; 5, the curved elastic sheet; 6, the counterweight block; 7, the auxiliary structure; 71, the sliding rail; 72, the sleeve; 73, the third spring; 74, the sliding block; 75, the hinged seat one; 76, the hinged seat two; 77, the hinged rod; 78, the fourth spring; 8, the longitudinal buffering structure; 81, the second damping pipe; 82, the fifth spring; 83, the damping rod two; 84, the connecting plate; 85, the L-shaped sensing plate; 9, the bottom plate; 10, the T-shaped plate; 11, the stabilizing block; 12, the installation screw plate; 13, the connecting rod; 14, the suspension beam arm; 15, the support rod. DETAILED DESCRIPTION

[0034] The application will be further described and illustrated below in connection with specific embodiments and the accompanying drawings of the specification:

[0035] Please refer to Figures 1-7 The chimney tuning mass damper provided by the application comprises an installation mainboard 1, the top of the installation mainboard 1 is fixedly provided with four adjusting structures 2, the four adjusting structures 2 comprise a first damping pipe 21, one side of the four first damping pipes 21 is provided with a side groove 22, the outer surfaces of the four first damping pipes 21 are fixedly provided with extension blocks 23 on both sides, the interiors of the two extension blocks 23 are fixedly sleeved with a rotating rod one 24, the outer surface of the rotating rod one 24 is fixedly sleeved with a gear 25 in the middle, the outer surface of the rotating rod one 24 is fixedly sleeved with a rotating valve 26 at one end, the outer surface of the rotating valve 26 is provided with a plurality of grooves, the outer surface of the first damping pipe 21 is fixedly provided with a first spring 27 at the top, the outer surface of the first spring 27 is fixedly provided with a connecting column 28 at the top, the bottom of the connecting column 28 is fixedly provided with a damping rod one 29, the bottom of the damping rod one 29 is fixedly provided with a pressing plate 210 at one end, the interior of the first damping pipe 21 is movably sleeved with a telescopic rod 211, the top of the telescopic rod 211 is fixedly provided with a sealing gasket 212 at one end, and the sealing gasket 212 is sealingly connected with the first damping pipe 21.

[0036] Please refer to Figures 1-3 The top of the installation mainboard 1 is fixedly provided with four locking structures 3, the four locking structures 3 comprise a support seat one 31, the interior of the support seat one 31 is fixedly sleeved with a rotating rod two 32, the interior of the rotating rod two 32 is hingedly provided with a clamping block 33, and the clamping block 33 is clamped in the groove of the rotating valve 26. The outer surface of the clamping block 33 is fixedly provided with a pressing block 34 at one side, the outer surface of the pressing block 34 is fixedly provided with a second spring 35 at the bottom, and the second spring 35 is fixedly connected with the installation mainboard 1.

[0037] When the damping force of the adjusting device needs to be adjusted, the pressing block 34 is pressed downward, at this time the second spring 35 is contracted, thereby driving the clamping block 33 to rotate around the rotating rod two 32, so that the clamping block 33 can be separated from the groove of the rotating valve 26, at this time the rotating valve 26 can rotate.

[0038] Please refer to Figures 4-5 The present application: four connecting columns 28 are internally fixedly installed with a top plate 4, the outer surface top of the top plate 4 is fixedly installed with a curved elastic sheet 5, and the bottom of the top plate 4 is fixedly installed with a counterweight 6. The outer surface top of the installation main plate 1 is fixedly installed with an auxiliary structure 7, the auxiliary structure 7 comprises a sliding rail 71, the inside of the sliding rail 71 is fixedly installed with a sleeve 72, and the outer surface of the sleeve 72 is fixedly sleeved with a third spring 73. The outer surface of the third spring 73 is fixedly installed with sliding blocks 74 at both ends, the two sliding blocks 74 are slidingly connected with the sleeve 72, the top of the two sliding blocks 74 is fixedly installed with hinged seats one 75, and the inside of the two hinged seats one 75 is hingedly installed with a hinged rod 77. The outer surface bottom of the counterweight 6 is fixedly installed with hinged seats two 76 at both sides, the two hinged seats two 76 are hingedly connected with the hinged rod 77, the bottom of the counterweight 6 is fixedly installed with four fourth springs 78, and the four fourth springs 78 are fixedly connected with the installation main plate 1.

[0039] The curved elastic sheet 5 is attached to the inner wall of the chimney, and the curved elastic sheet 5 has elasticity. Through the contact of the curved elastic sheet 5 and the inner wall of the chimney, the curved elastic sheet 5 drives the counterweight 6 to press downward after being impacted, at this time, due to the hinging of the hinged rod 77, when the counterweight 6 is pressed downward, the two hinged rods 77 simultaneously press the sliding blocks 74 inward, at this time, the two sliding blocks 74 slide inward on the outer surface of the sleeve 72, the third spring 73 is pressed and contracted, and when it is contracted to the limit, it is bounced out, the elastic force generated and the impact force received partially offset.

[0040] Please refer to Figures 1-7 The present application: the outer surface of the counterweight 6 is fixedly installed with two longitudinal buffering structures 8 at both sides, the two longitudinal buffering structures 8 comprise a second damping pipe 81, the outer surface top of the second damping pipe 81 is fixedly installed with a fifth spring 82, and the outer surface top of the fifth spring 82 is fixedly installed with a connecting plate 84. The bottom of the connecting plate 84 is fixedly installed with a damping rod two 83, the damping rod two 83 is sealed in the inside of the second damping pipe 81, and the top of the connecting plate 84 is fixedly installed with an L-shaped sensing plate 85. The bottom of the installation main plate 1 is fixedly installed with a bottom plate 9, the bottom of the bottom plate 9 is fixedly installed with T-shaped plates 10 at both sides, the inside of the two T-shaped plates 10 is threadedly installed with a stable block 11, and the outer surface bottom of the stable block 11 is weldedly installed with an installation screw plate 12. The top of one T-shaped plate 10 is fixedly installed with a connecting rod 13, the outer surface top of the connecting rod 13 is fixedly installed with a cantilever arm 14, the bottom of the cantilever arm 14 is fixedly installed with a supporting rod 15, and the self-vibration circular frequency of the device is: And the displacement of the device under the action of inertial force is: Thus the self-vibration frequency calculation formula of the device is:

[0041]

[0042] Two installation grooves are formed on the upper and lower sides of the inner wall of the chimney, and the L-shaped sensing plate 85 is inserted into the grooves at this time, when the chimney is subjected to longitudinal impact force, the fifth spring 82 is contracted, and the damping rod two 83 is pressed in the sealed second damping pipe 81 to offset the impact, the T-shaped plate 10 and the stable block 11 are fixed in a triangular shape by using bolts, and the bottom plate 9 and the mounting screw plate 12 are connected more stably, the connecting rod 13 is used to connect the whole and the control unit, the suspension beam arm 14 is used to fix the connecting rod 13 and the whole device on the chimney cylinder, and the supporting rod 15 is used to provide support for the suspension beam arm 14, thereby improving the safety of the structure.

[0043] The working principle of the present application is that when the device is installed, two installation grooves are formed on the upper and lower sides of the inner wall of the chimney, and the L-shaped sensing plate 85 is inserted into the grooves at this time, when the chimney is subjected to longitudinal impact force, the fifth spring 82 is contracted, and the damping rod two 83 is pressed in the sealed second damping pipe 81 to offset the impact, the device has the ability of longitudinal buffering, and the impact bearing limit of the device is improved, then when different intensity impacts are dealt with, the rotating rod one 24 drives the gear 25 to rotate by rotating the rotating valve 26, since the gear 25 and the teeth of the telescopic rod 211 are engaged with each other, the telescopic rod 211 can move up and down in the first damping pipe 21 when the gear 25 rotates, since the sealing gasket 212 is sealed with the first damping pipe 21, the length of the air column in the first damping pipe 21 can be changed when the telescopic rod 211 moves in the first damping pipe 21, thereby the damping force generated when the first spring 27 drives the damping rod one 29 to compress can be changed, so that different intensity impacts can be dealt with, after adjustment, the clamping block 33 rotates on the outer surface of the rotating rod two 32 by stretching the second spring 35, so that the clamping block 33 is clamped in the groove of the rotating valve 26, so that the rotating valve 26 can be locked to prevent the device from being misrotated during work and affecting the buffering work, finally when the device is working, the curved elastic sheet 5 contacts the inner wall of the chimney, and the curved elastic sheet 5 drives the counterweight block 6 to press down after being impacted, since the articulated rods 77 are articulated, the counterweight block 6 presses down, causing the two articulated rods 77 to simultaneously press and slide the sliding block 74 inward, the two sliding blocks 74 slide inward on the outer surface of the sleeve 72, the third spring 73 is contracted and stretched to the limit, and then pops out, the elastic force generated and the impact force received are partially offset, thereby the buffering effect can be improved.

[0044] It should be pointed out finally that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the protection scope of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A tuned mass damper for a chimney comprising a mounting plate (1), characterised in that: The top of mounting mainboard (1) is fixedly installed with four adjusting structures (2), four adjusting structures (2) includes first damping pipe (21), four first damping pipe (21) one side is provided with side groove (22), four first damping pipe (21) both sides of outer surface is fixedly installed with extension block (23), two extension block (23) inside fixed sleeve has rotation rod one (24), the outer surface middle segment of rotation rod one (24) is fixedly sleeved with gear (25), the outer surface one end of rotation rod one (24) is fixedly sleeved with rotating valve (26), the outer surface of rotating valve (26) is provided with a plurality of grooves, the outer surface top of first damping pipe (21) is fixedly installed with first spring (27), the outer surface top of first spring (27) is fixedly installed with connecting column (28), the bottom of connecting column (28) is fixedly installed with damping rod one (29), the bottom one end of damping rod one (29) is fixedly installed with pressing plate (210), the inside of first damping pipe (21) is movably sleeved with telescopic rod (211), the top one end of telescopic rod (211) is fixedly installed with sealing gasket (212), sealing gasket (212) and first damping pipe (21) are sealingly connected; The top of mounting mainboard (1) is fixedly installed with four locking structures (3), four locking structures (3) includes support seat one (31), the inside of support seat one (31) is fixedly sleeved with rotating rod two (32), the inside of rotating rod two (32) is hingedly installed with clamping block (33), the clamping block (33) is clamped in the groove of rotating valve (26); The outer surface one side of clamping block (33) is fixedly installed with pressing block (34), the outer surface bottom of pressing block (34) is fixedly installed with second spring (35), the second spring (35) is fixedly connected with mounting mainboard (1).

2. A tuned mass damper for a chimney according to claim 1, characterised in that: The inside of four connecting columns (28) is fixedly installed with top plate (4), the outer surface top of top plate (4) is fixedly installed with curved spring (5), the bottom of top plate (4) is fixedly installed with counterweight block (6).

3. A tuned mass damper for a chimney according to claim 2, characterised in that: The outer surface top of mounting mainboard (1) is fixedly installed with auxiliary structure (7), the auxiliary structure (7) includes slide rail (71), the inside of slide rail (71) is fixedly installed with sleeve pipe (72), the outer surface of sleeve pipe (72) is fixedly sleeved with third spring (73).

4. A tuned mass damper for a chimney according to claim 3, characterised in that: The outer surface both ends of third spring (73) are fixedly installed with sliding block (74), two sliding blocks (74) are slidingly connected with sleeve pipe (72), the top of two sliding blocks (74) is fixedly installed with hinged seat one (75), the inside of two hinged seat one (75) is hingedly installed with hinged rod (77).

5. A tuned mass damper for a chimney according to claim 4, characterised in that: The bottom of two sides of the outer surface of counterweight block (6) is fixedly installed with hinged seat two (76), two hinged seat two (76) are hingedly connected with hinged rod (77), the bottom of counterweight block (6) is fixedly installed with four fourth springs (78), four fourth springs (78) are fixedly connected with mounting mainboard (1).

6. A tuned mass damper for a chimney according to claim 5, characterised in that: The outer surface of the counterweight (6) is fixedly provided with two longitudinal buffer structures (8) on both sides, two longitudinal buffer structures (8) comprise a second damping pipe (81), the outer surface top of the second damping pipe (81) is fixedly provided with a fifth spring (82), the outer surface top of the fifth spring (82) is fixedly provided with a connecting plate (84).

7. A tuned mass damper for a chimney according to claim 6, characterised in that: The bottom of the connecting plate (84) is fixedly provided with a damping rod two (83), the damping rod two (83) is sealed in the second damping pipe (81), the top of the connecting plate (84) is fixedly provided with an L-shaped sensing plate (85).

8. A tuned mass damper for a chimney according to claim 7, characterised in that: The bottom of the mounting mainboard (1) is fixedly provided with a bottom plate (9), the bottom of the bottom plate (9) is fixedly provided with a T-shaped plate (10) on both sides, the inside of two T-shaped plates (10) is screw-mounted with a stable block (11), the outer surface bottom of the stable block (11) is welded with a mounting screw plate (12).

9. A tuned mass damper for a chimney according to claim 8, characterised in that: The top of one T-shaped plate (10) is fixedly installed with a connecting rod (13), the outer surface of the connecting rod (13) is fixedly installed with a cantilever arm (14) at the top, the bottom of the cantilever arm (14) is fixedly installed with a supporting rod (15), the self-vibration circular frequency of the device is: , and the displacement under the inertial force of the device is: , so the self-vibration frequency calculation formula of the device is: .

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