Traction machine vibration isolation system

Abstract

The present invention discloses a traction machine vibration isolation system, including a lower bearing structure, a composite vibration isolation platform, a height adjustment component, and an upper connecting structure, which are connected in sequence from bottom to top. The upper connecting structure includes steel profiles on the front and rear facades of the traction machine base, load-bearing components on the left and right facades of the traction machine base, and connecting profiles with round holes are arranged at the ends of the steel profiles and the load-bearing components; the bottom nut of the height adjustment component is welded on the composite vibration isolation platform, the screw on the bottom nut passes through the round hole on the connecting component, the lower self-locking nut is at the lower part of the round hole, and the upper self-locking nut is at the upper part of the round hole, and the lower self-locking nut is rotated to lift the traction machine base. The load of the traction machine base can be borne independently by the machine room floor, jointly borne by the additional steel beams and the traction machine load-bearing steel beams, and independently borne by the traction machine load-bearing steel beams. The above three structural forms can complete the elevator traction machine vibration isolation and noise reduction renovation project without disassembling the traction machine.

Description

Technical Field

[0001] The invention relates to a building solid sound vibration isolation and noise reduction technology, and in particular to a traction machine vibration isolation system for an elevator traction machine. Background Art

[0002] The vibration noise transmitted by the traction machine is the main source of vibration noise during elevator operation. The main transmission mode of elevator traction machine vibration noise is structural noise transmitted through the building structure in the form of low-frequency vibration. The vibration transmitted from the traction machine to the load-bearing steel beam is reduced by eliminating the rigid connection between them. The current solution to the problem is to configure a vibration isolation structure between the traction machine and the load-bearing steel beam, which can attenuate the vibration and reduce the transmission of vibration through the building structure.

[0003] However, the installation of vibration isolation structure for the traction machine requires the elevator to be shut down, and a professional elevator installation construction team will put the car on the ground floor, dismantle the traction machine, traction rope, counterweight and compensation device, install the vibration isolation structure between the traction machine base and the load-bearing steel beam, and then reinstall and debug them one by one, and the special equipment safety supervision and management department will conduct acceptance monitoring. In this disassembly and assembly process, not only the normal use of the impact elevator is affected, resulting in the expenditure of manpower and material resources, but also the high cost of vibration isolation modification of the elevator traction machine, which restricts the control modification of elevator operation noise. In particular, with the continuous increase in labor costs, this cost will also rise steadily. Summary of the invention

[0004] In order to solve the problem of re-disassembly caused by the installation of the elevator traction machine vibration isolation structure, a traction machine vibration isolation system is set up, and the composite vibration isolation platform is set between the lower load-bearing structure and the traction machine base. The traction machine vibration isolation and noise reduction renovation project can be carried out without disassembling the traction machine.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a traction machine vibration isolation system, including a lower load-bearing structure, a composite vibration isolation platform, a height adjustment component, and an upper connecting structure, which are connected in sequence from bottom to top, and the vibration isolation system is arranged on two sides of the traction machine base. The upper connecting structure includes steel profiles on the front and rear facades of the traction machine base, load-bearing components on the left and right facades of the traction machine base, and connecting profiles with circular holes are arranged at the ends of the steel profiles and the load-bearing components; the bottom nut of the height adjustment component is welded on the composite vibration isolation platform, the screw on the bottom nut passes through the circular hole on the connecting component, the lower self-locking nut is at the lower part of the circular hole, and the upper self-locking nut is at the upper part of the circular hole, and the traction machine base is lifted by rotating the lower self-locking nut.

[0006] When the load of the traction machine base is jointly borne by the additional steel crossbeam and the traction machine load-bearing steel beam, the lower load-bearing structure includes the steel crossbeam and the vertical steel plate. The vertical steel plates at both ends of the steel crossbeam are reliably connected to the concrete pedestals and load-bearing walls at both ends of the traction machine load-bearing steel beam, and the inner side of the steel crossbeam is welded to the traction machine load-bearing steel beam.

[0007] When the load of the hoisting machine base is borne by the floor under the hoisting machine base, the lower bearing structure is a bearing platform reliably connected to the floor, concrete pedestal, and bearing wall. The composite vibration isolation platform is allowed to be set on the floor under the hoisting machine base only when the floor load of the elevator hoisting machine room is calculated by the original architectural design unit and meets the operating load of the hoisting machine base. At the same time, by expanding the bottom area of ​​the bearing platform, the pressure-bearing area of ​​the bearing platform is increased.

[0008] When the load of the traction machine base is independently borne by the traction machine load-bearing steel beam, the lower load-bearing structure includes a facade steel plate, a supporting bracket and a load-bearing steel plate, the facade steel plate is welded to the facade of the load-bearing steel beam, the load-bearing steel plate is on the supporting bracket, and a connecting anti-overturning member is arranged on the upper part of the two load-bearing steel beams. When two composite vibration isolation platforms are arranged on the outer facade of the traction machine load-bearing steel beam, the force point is on the outside of the load-bearing steel beam, and a connecting anti-overturning member is arranged on the upper part of the two load-bearing steel beams, which can ensure that the load-bearing steel beam does not cause plastic deformation due to periodic uneven loads.

[0009] The bottom nut is welded on the central axis of the composite vibration isolation platform, and the position of the circular hole on the connecting profile is vertically consistent with the position of the bottom nut on the composite vibration isolation platform.

[0010] The composite vibration isolation platform includes a steel structure shell, a steel spring vibration isolation element, a rubber damping vibration reduction element, a mass block and a particle damping structure. The bottom of the composite vibration isolation platform is reliably connected to the lower load-bearing structure by bolts. The traction machine composite vibration isolation platform is designed according to the spectral characteristics of the traction machine vibration. It adopts a composite vibration passive control structure that integrates secondary vibration isolation technology and particle damping energy dissipation technology. On the basis of vibration isolation efficiency ≥ 90%, the deformation amount during load changes does not affect the leveling accuracy of the elevator car and the height difference of the vertical parking of the car.

[0011] The load range of each supporting point of the composite vibration isolation platform is greater than the minimum load when the car is unloaded and accelerated to descend, and the maximum load when the car is fully loaded and accelerated to ascend. Since the constant load of the elevator traction machine base includes the weight of the traction machine, the weight of the car, the counterweight device, the traction rope and the compensation device, the accompanying cable, etc. During the operation, the load on the traction machine base varies greatly, including the momentum load changes generated by the car in the state of no load, half load, full load, and various operating states such as starting acceleration, stable uniform speed, and braking deceleration, as well as the load W generated by the friction resistance during operation. M, air resistance during car operation and other factors. Therefore, if ordinary nuts are used for the lower self-locking nut and the upper self-locking nut, it will easily lead to loosening. Since elevator products are special equipment, the manufacturing, installation, modification and maintenance of elevators must strictly comply with the requirements of safety technical specifications. Relevant national laws and regulations and standards must be strictly followed and supervised by the special equipment safety supervision and management department. Therefore, compared with other projects, the safety of the elevator noise and vibration control project should be placed first. All connection parts of the traction machine vibration isolation system must be reliably connected, including the bottom nut and the screw of the height adjustment component. After installation, welding should be performed to increase reliability.

[0012] When installing the traction machine vibration isolation system, first rotate and loosen the nut on the upper part of the rubber vibration damping pad between the traction machine base and the load-bearing steel beam, and lift the traction machine base by rotating the lower self-locking nut of the height adjustment component to separate it from the rubber vibration damping pad. At the same time, the rubber vibration damping pad and the upper nut are not removed. Since the separation between the traction machine base and the rubber vibration damping pad is about 1 to 2 mm, the traction machine vibration isolation system will not affect the normal operation of the elevator during installation and use, and can ensure the safe operation of the elevator. In this case, the traction machine vibration isolation modification can be completed without stopping the elevator. The load borne by the composite vibration isolation platform can be adjusted by rotating the lower self-locking nut, and the lifting height of the traction machine base can be fixed by rotating the upper self-locking nut.

[0013] The beneficial effect of the present invention is that, according to the actual situation of the machine room, the load of the traction machine base can be borne independently by the machine room floor, jointly borne by the additional steel beams and the traction machine load-bearing steel beams, or borne independently by the traction machine load-bearing steel beams. The composite vibration isolation platform, height adjustment component and corresponding installation structure arranged on the lower load-bearing structure can lift the traction machine base and separate it from the rubber vibration damping pad by rotating the lifting force of the lower self-locking nut of the height adjustment component, thereby isolating the vibration propagation path of the traction machine. The above three structural forms can complete the vibration isolation and noise reduction renovation project of the elevator traction machine without disassembling the traction machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a side view of the structure of the first embodiment of the present invention.

[0016] Figure 2 yes Figure 1 Top view of the structure.

[0017] Figure 3 It is a side structural diagram of the second embodiment of the present invention.

[0018] Figure 4 It is a side structural diagram of the third embodiment of the present invention.

[0019] In the figure, 1. lower load-bearing structure, 11. steel beam, 12. vertical steel plate, 13. supporting corbel, 14. load-bearing steel plate, 15. anti-overturning member, 16. load-bearing platform, 2. composite vibration isolation table, 3. height adjustment member, 31. bottom nut, 32. screw, 33. lower self-locking nut, 34. upper self-locking nut, 4. upper connecting structure, 41. steel profile, 42. load-bearing member, 43. connecting profile, 44. round hole, 5. traction machine base, 51. load-bearing steel beam, 52. concrete pedestal, 53. load-bearing wall, 54. floor. DETAILED DESCRIPTION

[0020] exist Figure 1 , 2 In the first embodiment shown, the traction machine vibration isolation system includes a lower load-bearing structure (1), a composite vibration isolation platform (2), a height adjustment member (3), and an upper connection structure (4), which are connected in sequence from bottom to top. The vibration isolation system is arranged on two sides of the traction machine base (5). The upper connection structure (4) includes steel profiles (41) on the front and rear facades of the traction machine base (5), load-bearing members (42) on the left and right facades of the traction machine base (5), and connection profiles with round holes (44) arranged thereon. (43) at the ends of the steel profile (41) and the load-bearing member (42); the bottom nut (31) of the height adjustment member (3) is welded to the composite vibration isolation platform (2); the screw (32) on the bottom nut (31) passes through the circular hole (44) on the connecting profile (43); the lower self-locking nut (33) is at the lower part of the circular hole (44); the upper self-locking nut (34) is at the upper part of the circular hole (44); the lower self-locking nut (33) is rotated to lift the traction machine base (5).

[0021] When the load of the hoisting machine base (5) is jointly borne by the additional steel crossbeam (11) and the hoisting machine load-bearing steel beam (51), the lower load-bearing structure (1) includes the steel crossbeam (11) and the vertical steel plate (12), the vertical steel plates (12) at both ends of the steel crossbeam (11) are reliably connected to the concrete pedestals (52) and the load-bearing walls (53) at both ends of the hoisting machine load-bearing steel beam (51), and the inner side of the steel crossbeam (11) is welded to the hoisting machine load-bearing steel beam (51).

[0022] The bottom nut (31) is welded to the central axis of the composite vibration isolation platform (2), and the position of the circular hole (44) on the connecting profile (43) is vertically consistent with the position of the bottom nut (31) on the composite vibration isolation platform (2).

[0023] The composite vibration isolation platform (2) comprises a steel structure shell, a steel spring vibration isolation element, a rubber damping vibration reduction element, a mass block and a particle damping structure. The bottom of the composite vibration isolation platform (2) is reliably connected to the lower load-bearing structure (1) by bolts. The load range of each support point of the composite vibration isolation platform (2) is greater than the minimum load when the car is unloaded and accelerated to descend, and the maximum load when the car is fully loaded and accelerated to ascend.

[0024] exist Figure 3 In the second embodiment shown, when the load of the traction machine base (5) is borne by the floor (54) under the traction machine base (5), the lower load-bearing structure (1) is a load-bearing platform (16) reliably connected to the floor (54), the concrete pedestal (52), and the load-bearing wall (53).

[0025] exist Figure 4 In the third embodiment shown, when the load of the traction machine base (5) is independently borne by the traction machine load-bearing steel beam (51), the lower load-bearing structure (1) includes a facade steel plate (12), a supporting bracket (13) and a load-bearing steel plate (14), the facade steel plate (12) is welded to the facade of the load-bearing steel beam (51), the load-bearing steel plate (14) is on the supporting bracket (13), and a connecting anti-overturning member (15) is provided on the upper part of the two load-bearing steel beams (51).

[0026] It should be understood that various changes may be made to the above embodiments without departing from the scope of the present invention. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. The traction machine vibration isolation system includes a lower load-bearing structure, a composite vibration isolation platform, a height adjustment component, and an upper connection structure, which are connected in sequence from bottom to top, and are characterized by: Two composite vibration isolation platforms are arranged on the lower bearing structures on both sides of the traction machine base, and the height adjustment component is between the composite vibration isolation platform and the upper connection structure. The upper connection structure includes steel profiles on the front and rear facades of the traction machine base, load-bearing components on the left and right facades of the traction machine base, and connection profiles with round holes are arranged at the ends of the steel profiles and the load-bearing components. First, the nut on the upper part of the rubber vibration damping pad between the traction machine base and the load-bearing steel beam is rotated to loosen, and the bottom nut of the height adjustment component is welded to the composite vibration isolation platform. The screw on the bottom nut passes through the round hole on the upper connection profile. The lower self-locking nut is at the lower part of the round hole, and the upper self-locking nut is at the upper part of the round hole. The traction machine base is lifted by rotating the lower self-locking nut, and the lifting height of the traction machine bottom is fixed by rotating the upper self-locking nut to separate it from the rubber vibration damping pad, and the rubber vibration damping pad and the upper nut are not removed.

2. The traction machine vibration isolation system according to claim 1, characterized in that: The load of the traction machine base can be borne independently by the machine room floor, jointly by the additional steel beams and the traction machine load-bearing steel beams, or independently by the traction machine load-bearing steel beams.

3. The traction machine vibration isolation system according to claim 2, characterized in that: When the load of the traction machine base is jointly borne by the additional load-bearing beam and the traction machine load-bearing steel beam, the lower load-bearing structure includes a steel cross beam and a vertical steel plate. The vertical steel plates at both ends of the steel cross beam are reliably connected to the concrete pedestals and load-bearing walls at both ends of the traction machine load-bearing steel beam, and the inner side of the steel cross beam is welded to the traction machine load-bearing steel beam.

4. The traction machine vibration isolation system according to claim 2, characterized in that: When the load of the traction machine base is borne by the floor under the traction machine base, the lower load-bearing structure is a load-bearing platform reliably connected to the floor, the concrete pedestal, and the vertical surface of the load-bearing wall.

5. The traction machine vibration isolation system according to claim 2, characterized in that: When the load of the traction machine base is independently borne by the traction machine load-bearing steel beam, the lower load-bearing structure includes a facade steel plate, a supporting corbel and a load-bearing steel plate. The facade steel plate is welded to the facade of the load-bearing steel beam, the load-bearing steel plate is on the supporting corbel, and a connecting anti-overturning component is arranged on the upper part of the two load-bearing steel beams.

6. The traction machine vibration isolation system according to claim 1, characterized in that: The bottom nut is welded to the central axis of the composite vibration isolation platform, and the position of the circular hole on the connecting profile is vertically consistent with the position of the bottom nut on the composite vibration isolation platform.

7. The traction machine vibration isolation system according to claim 1, characterized in that: The composite vibration isolation platform comprises a steel structure shell, a steel spring vibration isolation element, a rubber damping vibration reduction element, a mass block and a particle damping structure. The bottom of the composite vibration isolation platform is reliably connected to the lower load-bearing structure through bolts.

8. The traction machine vibration isolation system according to claim 1, characterized in that: The load range of each supporting point of the composite vibration isolation platform is greater than the variation range of the minimum load when the car is unloaded and accelerated to descend, and the maximum load when the car is fully loaded and accelerated to ascend.

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