Tuned mass damper for chimney

Abstract

A hinge mechanism is installed in the middle of the lower end of an installation mechanism and comprises a pair of hinged supports, a hinged shaft, a screw head, a shaft rod, a first damping pad and a threaded rod, the hinged supports are fixed to the middle of the lower end of the installation mechanism, the upper end of a swing rod is located between the hinged supports, and the hinged shaft movably penetrates through the hinged supports; according to the tuned mass damper, the tuned mass damper is installed on a chimney through the installation mechanism, the swing rod and the mass block are located in the chimney, if the chimney is subjected to external force, energy can be transmitted to the mass block through swing of the chimney, the mass block swings, and the energy is transmitted to the chimney through the shaft rod bearing. And meanwhile, the mass block can generate opposite swing which is just different from the swing of the chimney, so that the swing of the chimney can be reduced, the damping and wind resistance effects are achieved, an external spring for damping is not needed, and the service life is prolonged.

Description

Technical Field

[0001] The invention relates to the field of dampers, in particular to a tuned mass damper for a chimney. Background Art

[0002] A chimney is a structure that provides ventilation for hot flue gases or fumes from a boiler, furnace, stove or fireplace. Chimneys are usually vertical, or as close to vertical as possible, to ensure a smooth flow of gases. Air is drawn into the chimney for combustion, which is known as the chimney effect. The space within the chimney is called the flue. Chimneys may be found in buildings, steam locomotives and ships. Since chimneys are generally tall, they are often fitted with dampers to resist wind forces.

[0003] At present, when chimney dampers are used, most of them are installed outside the chimney to make the chimney resist wind force. Most dampers use springs for shock absorption. In this way, the springs are exposed to the outside for a long time, which is easy to rust and affect the elasticity, thus affecting the service life of the damper.

[0004] Therefore, we propose a tuned mass damper for chimney to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a tuned mass damper for a chimney to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A tuned mass damper for a chimney comprises a mounting mechanism, a swing rod movably arranged in the middle of the lower end thereof, and a mass block fixed at the lower end of the swing rod, wherein a rotating self-locking mechanism is installed on the upper part of the mounting mechanism;

[0008] A hinge mechanism is installed in the middle of the lower end of the installation mechanism, and the hinge mechanism includes a hinge seat, a hinge shaft, a screw head, a shaft rod, a damping pad 1, and a threaded rod. The hinge seat has a pair and is fixed in the middle of the lower end of the installation mechanism, the upper end of the swing rod is located between the hinge seats, the hinge shaft movably passes through the hinge seats, the hinge shaft and the upper end of the swing rod are fixed through, the shaft rod bearing is connected inside the hinge shaft, the screw head is fixed to one end of the shaft rod, the screw head is rotatably connected to the hinge shaft, the threaded rod is fixed to the other end of the shaft rod, and the damping pad 1 is located outside the threaded rod and fixed to the hinge shaft;

[0009] A damping mechanism is fixedly installed on the outer end of one of the hinge seats, and the damping mechanism is connected to the threaded rod and the damping pad one. The damping mechanism includes a cover body, a nut, a damping pad two, a guide rail, and a guide block. The cover body is fixed to the hinge seat, and the nut is arranged inside the cover body. There is a pair of guide rails and they are respectively fixed at the upper and lower ends of the inner wall of the cover body, and there is a pair of guide blocks and they are respectively fixed at the upper and lower ends of the nut. The guide block is slidably connected to the guide rail, and the damping pad two is fixed to one end of the nut close to the damping pad one. The damping pad two is in contact with the damping pad one. The end of the threaded rod extends through the damping pad two and is threadedly connected to the nut, and the end of the threaded rod is connected to the cover body bearing.

[0010] In a further embodiment, the mounting mechanism includes a cross seat, a sliding rod, a rack, and a clamping block. A cross slide is opened at the upper end of the cross seat. There are four sliding rods and they are slidably connected around the inside of the cross slide. The clamping block is fixed at the end of the sliding rod, and the rack is fixed at the inner end of the sliding rod. The front and rear racks are symmetrically arranged, and the left and right racks are symmetrically arranged.

[0011] In a further embodiment, limiting paths are opened on both sides of the inner wall of the cross slide, limiting blocks are fixed on both sides of the slide rod, and the limiting blocks are located inside the limiting paths and are slidably connected to the limiting paths.

[0012] In a further embodiment, a rubber bag is bonded and fixed to the inner end of the clamping block, and a non-Newtonian fluid is provided inside the rubber bag.

[0013] In a further embodiment, the rotary self-locking mechanism includes a ratchet box, a rotating shaft, a handwheel, a ratchet, a gear column, a pawl, and a spring. The ratchet box is fixed in the middle of the upper end of the cross seat, and the gear column is located in the center of the cross slide and is meshed with the rack.

[0014] In a further embodiment, the rotating shaft is rotatably connected to the inner center of the ratchet box, the lower end of the rotating shaft passes through the ratchet box and is fixed to the tooth column, the ratchet is fixed to the outside of the rotating shaft, the pawl is located behind the ratchet and is rotatably connected to the ratchet box, the pawl is connected to the ratchet, the spring is connected between the rear end of the pawl and the rear end of the inner wall of the ratchet box, and the upper end of the rotating shaft passes through the ratchet box and is fixed to the handwheel.

[0015] In a further embodiment, a pull rope is fixedly connected to the rear end of the pawl, an end of the pull rope movably penetrates the rear end of the ratchet box, and the pull rope is located on the inner side of the spring.

[0016] In a further embodiment, the hinge seat is fixedly connected to the cross seat, the hinge shaft is I-shaped, the interior of the hinge shaft is a hollow structure, and both ends of the hinge shaft are respectively attached to two hinge seats.

[0017] In a further embodiment, side plates are fixed at the left end of the inner wall of the cover body and on the upper and lower sides of the threaded rod, a guide rod is movably passed through the middle of the side plate, a damping block is fixed at the end of the guide rod, the damping block is arc-shaped and tightly attached to the threaded rod, and a spring 2 is connected between the damping block and the side plate and on the outside of the guide rod.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] First, in the present invention, the tuned mass damper is installed on the chimney through the installation mechanism, and the rocker arm and the mass block are located in the chimney. In this way, if the chimney is subjected to external force, the swing of the chimney will transfer energy to the mass block and swing, and at the same time, the mass block will produce an opposite swing, which is just different from the swing of the chimney, so the swing of the chimney itself can be reduced, thereby playing a role in damping and resisting wind. In this way, there is no need for external spring damping, which increases the service life.

[0020] Secondly, in the present invention, when the tuned mass damper is installed on the chimney using the installation mechanism, the cross seat is placed horizontally on the chimney exhaust port, and then the hand wheel is rotated, which will drive the gear column to rotate. As the gear column and the four racks are engaged with each other at the same time, the four racks slide into the cross slide. At this time, the rack drives the slide rod to move, and the slide rod drives the clamping block to be close to the outer wall of the chimney, so as to limit and fix the cross seat, thereby making it more convenient to install the tuned mass damper.

[0021] Third, in the present invention, the screw head is rotated to drive the threaded rod to rotate through the shaft rod. As the threaded rod and the nut thread cooperate, the nut drives the damping pad 2 to fit tightly with the damping pad 1. In this way, the damping coefficient of the swing arm activity can be adjusted by rotating the screw head, which is more convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an overall schematic diagram of the present invention;

[0023] Figure 2 For the present invention Figure 1 A partial enlarged view of;

[0024] Figure 3 This is a schematic diagram of the interior of the rotary self-locking mechanism of the present invention;

[0025] Figure 4 It is a schematic diagram of the overall bottom surface of the present invention;

[0026] Figure 5 For the present invention Figure 4 B is a partial enlarged view;

[0027] Figure 6 is a cross-sectional schematic diagram of the damping mechanism of the present invention;

[0028] Figure 7For the present invention Figure 6 A partial enlarged view of C.

[0029] In the figure: 1. mounting mechanism; 11. cross seat; 12. cross slide; 13. slide bar; 14. rack; 15. limit track; 16. limit block; 17. clamping block; 18. rubber bag; 2. rotating self-locking mechanism; 21. ratchet box; 22. rotating shaft; 23. hand wheel; 24. ratchet; 25. tooth column; 26. pawl; 27. spring one; 28. pull rope; 3. pendulum rod; 4. mass block; 5. hinge mechanism; 51. hinge seat; 52. hinge shaft; 53. screw head; 54. shaft rod; 55. damping pad one; 56. threaded rod; 6. damping mechanism; 61. cover body; 62. nut; 63. damping pad two; 64. guide rail; 65. guide block; 66. side plate; 67. damping block; 68. guide rod; 69. spring two. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1 - Figure 7 In an embodiment of the present invention, a tuned mass damper for a chimney includes a mounting mechanism 1, a swing rod 3 movably arranged in the middle of the lower end thereof, and a mass block 4 fixed to the lower end of the swing rod 3. A rotation self-locking mechanism 2 is installed on the upper part of the mounting mechanism 1. The rotation self-locking mechanism 2 includes a ratchet box 21, a rotating shaft 22, a handwheel 23, a ratchet 24, a tooth column 25, a pawl 26, and a spring 27. The rotating shaft 22 is rotatably connected to the inner center of the ratchet box 21. The lower end of the rotating shaft 22 passes through the ratchet box 21 and is fixed to the tooth column 25. The ratchet 24 is fixed to the outside of the rotating shaft 22. The pawl 26 is located behind the ratchet 24 and is rotatably connected to the ratchet box 21. The pawl 26 is connected to the ratchet 24. The spring 27 is connected between the rear end of the pawl 26 and the rear end of the inner wall of the ratchet box 21. The upper end of the rotating shaft 22 passes through the ratchet box 21 and is fixed to the handwheel 23.

[0032] In the present invention, by rotating the hand wheel 23 counterclockwise, the hand wheel 23 will drive the rotating shaft 22 to rotate, and the rotating shaft 22 will drive the ratchet 24 and the tooth column 25 to rotate synchronously. The pawl 26 will not hinder the ratchet 24 from rotating counterclockwise, but will hinder the ratchet 24 from rotating clockwise, so that the tooth column 25 will not rotate clockwise due to non-human reasons.

[0033] Specifically, a pull rope 28 is fixedly connected to the rear end of the ratchet 26 , and the end of the pull rope 28 movably penetrates the rear end of the ratchet box 21 , and the pull rope 28 is located on the inner side of the spring 1 27 .

[0034] In the present invention, when the hand wheel 23 needs to be rotated clockwise, it is only necessary to pull the pull rope 28, and the pull rope 28 pulls the pawl 26 to rotate, so that the pawl 26 is no longer connected to the ratchet 24, and then the hand wheel 23 is rotated clockwise to drive the ratchet 24 and the tooth column 25 to rotate synchronously.

[0035] Specifically, the mounting mechanism 1 includes a cross seat 11, a slide rod 13, a rack 14, and a clamping block 17. A cross slide 12 is opened at the upper end of the cross seat 11. There are four slide rods 13 and they are slidably connected to the inside of the cross slide 12. The clamping block 17 is fixed at the end of the slide rod 13. The rack 14 is fixed to the inner end of the slide rod 13. The front and rear racks 14 are symmetrically arranged, and the left and right racks 14 are symmetrically arranged. The ratchet box 21 is fixed in the middle of the upper end of the cross seat 11. The gear column 25 is located at the center of the cross slide 12 and is meshed with the rack 14.

[0036] In the present invention, the cross seat 11 is placed horizontally on the chimney smoke outlet, and the clamping block 17 is located on the outside of the chimney, while the swing rod 3 and the mass block 4 are located on the inside of the chimney, and then the hand wheel 23 is rotated counterclockwise, which will drive the tooth column 25 to rotate counterclockwise. As the tooth column 25 engages with the four tooth columns 25 at the same time, the four tooth columns 25 slide into the cross slide 12. At this time, the tooth column 25 drives the slide bar 13 to move, and the slide bar 13 drives the clamping block 17 to move toward the center until it is close to the outer wall of the chimney, so that the cross seat 11 is limited and fixed, so that it is more convenient to install the tuned mass damper. In this way, if the chimney is subjected to external force, the swing of the chimney will transfer energy to the mass block 4 and swing, and at the same time, the mass block 4 will produce an opposite swing, which is just different from the swing of the chimney, so the swing of the chimney itself can be reduced, thereby playing a damping and wind-resistant role. In this way, there is no need for external spring damping, which improves the service life.

[0037] Specifically, the inner wall of the cross slide 12 has a limited position path 15 on both sides, and the two sides of the slide rod 13 are fixed with a limited position block 16, and the limited position block 16 is located inside the limited position path 15 and is slidably connected to the limited position path 15.

[0038] In the present invention, when the slide bar 13 slides inside the cross slide 12, it will drive the limit block 16 to slide along the limit track 15. The setting of the limit block 16 and the limit track 15 can prevent the slide bar 13 from vertically moving out of the cross slide 12.

[0039] Specifically, a rubber bag 18 is bonded and fixed to the inner end of the clamping block 17 , and a non-Newtonian fluid is provided inside the rubber bag 18 .

[0040] In the present invention, when the clamping block 17 contacts the chimney, the rubber bag 18 can be directly in contact with the chimney. At this time, the rubber bag 18 is squeezed and deformed, and the non-Newtonian fluid in the rubber bag 18 is squeezed. In this way, the rubber bag 18 can also give the chimney a pressure due to the non-Newtonian fluid, thereby improving the stability of the clamping. This can be suitable for rectangular and circular chimneys, thereby improving practicality.

[0041] Specifically, a hinge mechanism 5 is installed in the middle of the lower end of the installation mechanism 1, and the hinge mechanism 5 includes a hinge seat 51, a hinge shaft 52, a screw head 53, a shaft rod 54, a damping pad 55, and a threaded rod 56. The hinge seat 51 has a pair and is fixed in the middle of the lower end of the installation mechanism 1. The upper end of the swing rod 3 is located between the hinge seats 51, and the hinge shaft 52 movably passes through the hinge seats 51. The hinge shaft 52 is fixed to the upper end of the swing rod 3, and the shaft rod 54 is connected to the inside of the hinge shaft 52 with a bearing. The screw head 53 is fixed to one end of the shaft rod 54, and the screw head 53 is rotatably connected to the hinge shaft 52. The threaded rod 56 is fixed to the other end of the shaft rod 54. The damping pad 55 is located on the outside of the threaded rod 56 and is fixed to the hinge shaft 52. The hinge seat 51 is fixedly connected to the cross seat 11. The hinge shaft 52 is I-shaped, and the interior of the hinge shaft 52 is a hollow structure. The two ends of the hinge shaft 52 are respectively attached to the two hinge seats 51.

[0042] In the present invention, the swing arm 3 moves between the hinge seat 51 through the hinge shaft 52, and the hinge shaft 52 moves with the hinge seat 51. In addition, the screw head 53 can be rotated with a screwdriver, and the screw head 53 will drive the shaft rod 54 to rotate inside the hinge shaft 52 through the bearing, and the shaft rod 54 can drive the threaded rod 56 to rotate.

[0043] Specifically, a damping mechanism 6 is fixedly installed on the outer end of one of the hinge seats 51, and the damping mechanism 6 is connected to the threaded rod 56 and the damping pad 1 55. The damping mechanism 6 includes a cover body 61, a nut 62, a damping pad 2 63, a guide rail 64, and a guide block 65. The cover body 61 is fixed to the hinge seat 51, and the nut 62 is arranged inside the cover body 61. There is a pair of guide rails 64 and they are respectively fixed at the upper and lower ends of the inner wall of the cover body 61. There is a pair of guide blocks 65 and they are respectively fixed at the upper and lower ends of the nut 62. The guide block 65 is slidably connected to the guide rail 64, the damping pad 2 63 is fixed to one end of the nut 62 close to the damping pad 1 55, and the damping pad 2 63 is in contact with the damping pad 1 55. The end of the threaded rod 56 extends through the damping pad 2 63 and is threadedly connected to the nut 62, and the end of the threaded rod 56 is connected to the bearing of the cover body 61.

[0044] In the present invention, when the threaded rod 56 rotates, it can cooperate with the nut 62 thread to make the nut 62 move horizontally, and the nut 62 drives the guide block 65 to slide along the guide rail 64 to prevent the nut 62 from rotating. In this way, the nut 62 drives the damping pad 2 63 to move close to the damping pad 1 55 until it is tightly attached to the damping pad 1 55. In this way, the damping coefficient of the activity of the rocker arm 3 can be adjusted by rotating the screw head 53, and the operation is more convenient.

[0045] Specifically, side plates 66 are fixed to the left end of the inner wall of the cover body 61 and located on the upper and lower sides of the threaded rod 56. A guide rod 68 movably penetrates the middle of the side plate 66. A damping block 67 is fixed to the end of the guide rod 68. The damping block 67 is arc-shaped and tightly attached to the threaded rod 56. A spring 2 69 is connected between the damping block 67 and the side plate 66 and located on the outside of the guide rod 68.

[0046] In the present invention, the damping block 67 is given an elastic force by the spring 2 69, so that the damping block 67 is always in close contact with the threaded rod 56, and a rotational friction can be given to the threaded rod 56, thereby preventing the threaded rod 56 from rotating due to non-human reasons.

[0047] The working principle of the present invention is: the cross seat 11 is placed horizontally on the chimney exhaust port, and the four clamping blocks 17 are located on the outside of the chimney, while the swing rod 3 and the mass block 4 are located on the inside of the chimney, and then the hand wheel 23 is rotated counterclockwise, which will drive the tooth column 25 to rotate counterclockwise. As the tooth column 25 and the four tooth columns 25 are meshed at the same time, the four tooth columns 25 slide into the cross slide 12. At this time, the tooth column 25 drives the slide bar 13 to move, and the slide bar 13 drives the clamping block 17 to move toward the center until it is close to the outer wall of the chimney, so as to limit and fix the cross seat 11, thereby installing the tuning mass The damper is more convenient. In this way, if the chimney is subjected to external force, the swing of the chimney will transfer energy to the mass block 4 and swing. At the same time, the mass block 4 will produce an opposite swing. When the rocker arm 3 moves, it drives the hinge shaft 52 to rotate, and the hinge shaft 52 will drive the damping pad 1 55 to rotate. By making the damping pad 1 55 and the damping pad 2 63 closely contact and rub against each other, a damping effect can be achieved. This opposite swing is just different from the swing of the chimney, so the swing of the chimney itself can be reduced, thereby playing a damping and wind-resistant role. In this way, there is no need for external spring damping, which increases the service life.

[0048] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A tuned mass damper for a chimney, comprising a mounting mechanism (1), a swing rod (3) movably arranged in the middle of the lower end thereof, and a mass block (4) fixed at the lower end of the swing rod (3), characterized in that: A rotating self-locking mechanism (2) is installed on the upper part of the installation mechanism (1); A hinge mechanism (5) is installed in the middle of the lower end of the installation mechanism (1), and the hinge mechanism (5) includes a hinge seat (51), a hinge shaft (52), a screw head (53), a shaft rod (54), a damping pad (55), and a threaded rod (56). The hinge seat (51) has a pair and is fixed in the middle of the lower end of the installation mechanism (1). The upper end of the swing rod (3) is located between the hinge seats (51). The hinge shaft (52) movably passes through the hinge seats (51). The hinge shaft (52) and the upper end of the swing rod (3) are fixed through and through. The shaft rod (54) is connected to the inside of the hinge shaft (52) by a bearing. The screw head (53) is fixed to one end of the shaft rod (54). The screw head (53) is rotatably connected to the hinge shaft (52). The threaded rod (56) is fixed to the other end of the shaft rod (54). The damping pad (55) is located on the outside of the threaded rod (56) and is fixed to the hinge shaft (52). A damping mechanism (6) is fixedly mounted on the outer end of one of the hinge seats (51); the damping mechanism (6) is connected to the threaded rod (56) and the damping pad 1 (55); the damping mechanism (6) comprises a cover body (61), a nut (62), a damping pad 2 (63), a guide rail (64), and a guide block (65); the cover body (61) is fixed to the hinge seat (51); the nut (62) is arranged inside the cover body (61); and the guide rail (64) has a pair of guide rails (64) which are respectively fixed inside the cover body (61). The guide blocks (65) are provided at the upper and lower ends of the nut (62), respectively, and are slidably connected to the guide rail (64). The damping pad (63) is fixed to one end of the nut (62) close to the damping pad (55), and the damping pad (63) is in contact with the damping pad (55). The end of the threaded rod (56) extends through the damping pad (63) and is threadedly connected to the nut (62). The end of the threaded rod (56) is connected to the bearing of the cover body (61).

2. A tuned mass damper for a chimney according to claim 1, characterized in that: The mounting mechanism (1) comprises a cross seat (11), a slide bar (13), a rack (14), and a clamping block (17); a cross slideway (12) is provided at the upper end of the cross seat (11); four slide bars (13) are slidably connected to the inside of the cross slideway (12) respectively; the clamping block (17) is fixed to the end of the slide bar (13); the rack (14) is fixed to the inner end of the slide bar (13); the front and rear racks (14) are symmetrically arranged; and the left and right racks (14) are symmetrically arranged.

3. A tuned mass damper for a chimney according to claim 2, characterized in that: The inner wall of the cross slideway (12) is provided with limiting paths (15) on both sides, and limiting blocks (16) are fixed on both sides of the slide bar (13). The limiting blocks (16) are located inside the limiting paths (15) and are slidably connected to the limiting paths (15).

4. A tuned mass damper for a chimney according to claim 2, characterized in that: A rubber bag (18) is bonded and fixed to the inner end of the clamping block (17), and a non-Newtonian fluid is provided inside the rubber bag (18).

5. A tuned mass damper for a chimney according to claim 2, characterized in that: The rotary self-locking mechanism (2) comprises a ratchet box (21), a rotating shaft (22), a hand wheel (23), a ratchet (24), a tooth column (25), a pawl (26), and a spring (27). The ratchet box (21) is fixed in the middle of the upper end of the cross seat (11), and the tooth column (25) is located at the center of the cross slide (12) and is meshed with the rack (14).

6. A tuned mass damper for a chimney according to claim 5, characterized in that: The rotating shaft (22) is rotatably connected to the center of the ratchet box (21); the lower end of the rotating shaft (22) passes through the ratchet box (21) and is fixed to the tooth column (25); the ratchet (24) is fixed to the outside of the rotating shaft (22); the pawl (26) is located behind the ratchet (24) and is rotatably connected to the ratchet box (21); the pawl (26) is connected to the ratchet (24); the spring 1 (27) is connected between the rear end of the pawl (26) and the rear end of the inner wall of the ratchet box (21); the upper end of the rotating shaft (22) passes through the ratchet box (21) and is fixed to the hand wheel (23).

7. A tuned mass damper for a chimney according to claim 6, characterized in that: The rear end of the ratchet pawl (26) is fixedly connected with a pull rope (28), the end of the pull rope (28) movably penetrates the rear end of the ratchet box (21), and the pull rope (28) is located on the inner side of the spring 1 (27).

8. A tuned mass damper for a chimney according to claim 2, characterized in that: The hinge seat (51) is fixedly connected to the cross seat (11); the hinge shaft (52) is in an I-shape; the interior of the hinge shaft (52) is a hollow structure; and the two ends of the hinge shaft (52) are respectively in contact with the two hinge seats (51).

9. A tuned mass damper for a chimney according to claim 1, characterized in that: A side plate (66) is fixed at the left end of the inner wall of the cover body (61) and located on both upper and lower sides of the threaded rod (56); a guide rod (68) is movably passed through the middle of the side plate (66); a damping block (67) is fixed at the end of the guide rod (68); the damping block (67) is arc-shaped and closely attached to the threaded rod (56); a second spring (69) is connected between the damping block (67) and the side plate (66) and located on the outside of the guide rod (68).

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