Damping method of damping device of heavy-load elevator and traction system

Abstract

The invention discloses a damping method of a damping device of a heavy-load elevator and a traction system.The damping device comprises a main machine frame, mounted on a bearing beam, of the damping device, and a main machine mounting plate, a first damping rubber pad, a clamping plate and a second damping rubber pad which are sequentially arranged from top to bottom are arranged at the upper end of the main machine frame; the upper end of the main engine mounting plate is used for mounting a traction machine, a fastener penetrates through the main engine mounting plate and then is in threaded connection with the clamping plate, or the fastener penetrates through the clamping plate and then is in threaded connection with the main engine mounting plate; the damping method comprises the steps that a fastener is screwed or unscrewed to adjust the distance between the lower end of the fastener and the main rack, so that when the load of the traction machine is smaller than a set load, a gap is formed between the lower end of the fastener and the main rack; when the load is larger than the set load, the lower end of the fastening piece abuts against the upper end of the main machine frame, the situation that the damping device fails due to the fact that the damping rubber generates transition deformation when the load is heavy is avoided, stable operation of an elevator is guaranteed, and the loading requirement is met.

Description

Technical Field

[0001] This application relates to the technical field of elevators, and particularly to a shock absorption device and a traction system for large-capacity elevators. Background Art

[0002] For traditional freight elevators, due to their excessive load-bearing capacity, rubber shock absorption cannot be used, resulting in abnormal noises during the operation of the freight elevators. The main reason is that the ratio of the natural frequency of the main machine to that of the machine room is less than the square root of 2, causing resonance. In order to reduce the vibration transmission to the building structure and reduce the noise, elastic elements such as shock-absorbing rubber are usually installed at the supporting parts of the elevator. However, this design has significant technical defects in elevator applications.

[0003] First of all, the load of the elevator is much larger than that of ordinary passenger elevators. Especially when transporting heavy goods frequently, the shock-absorbing rubber is prone to excessive compression or plastic deformation under long-term high load. This deformation will cause the installation position of the elevator traction machine to shift, thereby affecting the alignment of the traction wheel and the steel wire rope, resulting in uneven distribution of the traction force. Seriously, it may even cause problems such as steel wire rope slipping, unstable car operation, or abnormal wear of the guide rail, ultimately leading to elevator operation failures and affecting safety and service life. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a shock absorption device for large-capacity elevators, and the technical solutions adopted include:

[0005] A shock absorption method for a shock absorption device of a large-capacity elevator, the shock absorption device including a main frame of the shock absorption device installed on a load-bearing beam, the upper end of the main frame being provided with a main machine mounting plate, a first shock-absorbing rubber pad, a clamping plate, and a second shock-absorbing rubber pad arranged in sequence from top to bottom. The upper end of the main machine mounting plate is used to install a traction machine, and a fastener passes through the main machine mounting plate and is threadedly connected to the clamping plate, or the fastener passes through the clamping plate and is threadedly connected to the main machine mounting plate;

[0006] The shock absorption method includes tightening or loosening the fastener to adjust the distance between the lower end of the fastener and the main frame, so that when the load of the traction machine is less than the set load, there is a gap between the lower end of the fastener and the main frame, and when the load of the traction machine is greater than the set load, the lower end of the fastener abuts against the upper end of the main frame, where 0% rated load ≤ set load ≤ 100% rated load.

[0007] In an embodiment of the present invention, the technical solution adopted to solve its technical problems is: the set load is 50% - 80% of the rated load.

[0008] One embodiment of the present invention solves the technical problem by adopting the following technical solution: a first through hole is provided on the main machine mounting plate, a second through hole is provided on the clamping plate, a first nut is provided above the second through hole on the clamping plate, and a second nut is provided below the second through hole. The fastener is sequentially inserted into the first through hole, the first nut, the second through hole and the second nut so that the fastener is threadedly connected with the clamping plate.

[0009] One embodiment of the present invention solves the technical problem by adopting the following technical solution: the fastener is a bolt.

[0010] This application also proposes a traction system that adopts the above shock absorption method.

[0011] Advantages of the present invention:

[0012] When the load of the traction machine is at the first load, there is a gap between the lower end of the fastener and the main machine frame, which can shock-absorb the main machine and control its vibration amplitude within a set value;

[0013] When the load of the traction machine is greater than the first load and less than the second load, after the first shock-absorbing rubber pad or the second shock-absorbing rubber pad is compressed under the action of the load, the lower end of the fastener abuts against the upper end of the main machine frame, and the fastener will press the upper end of the main machine frame to death. The compression amount of the shock-absorbing rubber pad will not decrease any more, avoiding excessive deformation of the shock-absorbing rubber when the load is heavy and resulting in the failure of the shock-absorbing device, ensuring the smooth operation of the elevator, and thus meeting the loading requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present invention will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

[0015] Figure 1 is a schematic structural diagram of the traction system according to the embodiment of the present application;

[0016] Figure 2 is a schematic structural diagram of the shock-absorbing device according to the embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] This part will describe the specific embodiments of the present invention in detail. The preferred embodiments of the present invention are shown in the drawings. The drawings are used to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be construed as a limitation on the protection scope of the present invention.

[0018] In the description of the present invention, "a plurality of" means more than two. Understanding "greater than", "less than", "exceeding", etc. does not include the present number, and understanding "above", "below", "within", etc. includes the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0019] In the description of the present invention, it should be understood that for the description of orientation, such as the orientation or positional relationship indicated by "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0020] In the present invention, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense. For example, they can be directly connected, or indirectly connected through an intermediate medium; they can be fixedly connected, or detachably connected, or integrally formed; they can be mechanically connected; they can be the communication inside two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0021] Referring to Figure 1-2 , embodiments of the present application are proposed. The traction system described in this embodiment includes a traction machine 20 and a shock absorption device. The shock absorption device includes a main frame 30 installed on a bearing beam 10. The upper end of the main frame 30 is provided with a main machine mounting plate 40, a first shock absorption rubber pad 50, a clamping plate 60, and a second shock absorption rubber pad 70 arranged in sequence from top to bottom. The traction machine 20 is installed on the upper end of the main machine mounting plate 40. Fasteners are respectively arranged on both sides of the shock absorption device. The fastener 80 passes through the main machine mounting plate 40 and is threadedly connected to the clamping plate 60, or the fastener 80 passes through the clamping plate 60 and is threadedly connected to the main machine mounting plate 40. The fastener 80 can be tightened or loosened under the action of an external force to adjust the distance between its lower end and the main frame 30.

[0022] The shock absorption method of the shock absorption device described in this embodiment includes:

[0023] The shock absorption method includes tightening or loosening the fastener 80 to adjust the distance between the lower end of the fastener 80 and the main frame 30, so that when the load of the traction machine 20 is less than the set load, there is a gap between the lower end of the fastener 80 and the main frame 30, and when the load of the traction machine 20 is greater than the set load, the lower end of the fastener 80 abuts against the upper end of the main frame 30, where 0% rated load ≤ set load ≤ 100% rated load.

[0024] When the load of the traction machine 20 is less than the set load, there is a gap between the lower end of the fastener 80 and the main frame 30, and the shock absorption device shocks the main machine of the traction machine 20 and controls the vibration amplitude within a set value;

[0025] When the load of the traction machine 20 is greater than the set load, after the first shock-absorbing rubber pad or the second shock-absorbing rubber pad is compressed under the action of the load, the lower end of the fastener 80 abuts against the upper end of the main frame 30, and the fastener 80 will press the main frame 30 to death. The first shock-absorbing rubber pad 50 or the second shock-absorbing rubber pad 70 will not be over-compressed under the action of the load, and the compression amount of the shock-absorbing rubber pad will not decrease, avoiding the over-deformation of the shock-absorbing rubber when the load is heavy and causing the shock-absorbing device to fail. Moreover, the first shock-absorbing rubber pad 50 and the second shock-absorbing rubber pad 70 can still effectively absorb the vibration generated by the traction machine 20, improve the running comfort, and ensure the stable operation of the elevator.

[0026] Specifically, in this embodiment, the value of the set load is 50% - 80% of the rated load. The set load can be 50% of the rated load, 60% of the rated load, or 80% of the rated load. For example, when the set load is 50% of the rated load, when the load condition is from 0 to 50% of the rated load, there is a gap between the lower end of the fastener 80 and the upper end of the main frame 30; when the load condition is greater than 50% of the rated load, the lower end of the fastener 80 abuts against the upper end of the main frame 30.

[0027] Referring to the attached drawings, the fastener 80 is a bolt. The main machine mounting plate 40 is provided with a first through hole, the clamping plate 60 is provided with a second through hole, a first nut 90 is provided above the second through hole on the clamping plate 60, and a second nut 100 is provided below the second through hole. The fastener 80 is sequentially inserted into the first through hole, the first nut 90, the second through hole, and the second nut 100 so that the fastener 80 is threadedly connected to the clamping plate 60. The first nut 90 and the second nut 100 ensure that the fastener 80 can be effectively threadedly connected to the clamping plate 60, and can also disperse and transfer the pressure and torque in the equipment or structure, ensuring the normal operation of the equipment when it bears a large load.

[0028] Of course, the present invention is not limited to the above embodiments. Those skilled in the art can make equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A shock absorption method for a shock absorption device of a large load elevator, characterized in that, The shock absorption device includes a main frame (30) installed on a load-bearing beam (10). At the upper end of the main frame (30), there are successively arranged from top to bottom a main machine mounting plate (40), a first shock-absorbing rubber pad (50), a clamping plate (60), and a second shock-absorbing rubber pad (70). The upper end of the main machine mounting plate (40) is used for installing a traction machine (20). A fastener (80) passes through the main machine mounting plate (40) and is threadedly connected to the clamping plate (60), or the fastener (80) passes through the clamping plate (60) and is threadedly connected to the main machine mounting plate (40). The shock absorption method includes: tightening or loosening the fastener (80) to adjust the distance between the lower end of the fastener (80) and the main frame (30), so that when the load of the traction machine (20) is less than the set load, there is a gap between the lower end of the fastener (80) and the main frame (30), and when the load of the traction machine (20) is greater than the set load, the lower end of the fastener (80) abuts against the upper end of the main frame (30), where 0% rated load ≤ set load ≤ 100% rated load.

2. The shock absorption method of the shock absorption device of the large-load elevator according to claim 1, characterized in that, The set load is 50% - 80% of the rated load.

3. The shock absorption method of the shock absorption device for a large-load elevator according to claim 1 or 2, characterized in that The main machine mounting plate (40) is provided with a first through hole, the clamping plate (60) is provided with a second through hole, a first nut (90) is provided above the second through hole on the clamping plate (60), and a second nut (100) is provided below the second through hole. The fastener (80) is successively inserted into the first through hole, the first nut (90), the second through hole, and the second nut (100) to threadedly connect the fastener (80) to the clamping plate (60).

4. The shock absorption method of the shock absorption device for a large load elevator according to claim 3, characterized in that, The fastener (80) is a bolt.

5. A traction system, characterized in that, Adopt the shock absorption method according to any one of claims 1 - 4.

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