Self-adaptive variable damping elevator guide and vibration suppression device

Abstract

The invention discloses a self-adaptive variable damping elevator guide and vibration suppression device which comprises a roller guide shoe mechanical body used for fixedly supporting a slide rheostat and a roller guide shoe; the slide rheostat is fixed on the roller guide shoe mechanical body and is connected with the guide shoe vibration transmission piece, the fixed end of the slide rheostat is fixed on the screw position of the guide shoe base, the movable end of the slide rheostat is fixed on the swing arm connected with the guide wheel, and after the movable end moves through the movement of the swing arm, a distance difference is formed between the movable end and the fixed end on a rheostat resistor; therefore, a sliding variable resistance and voltage signal value is generated and is output and transmitted to the variable orifice damper through the output line; the damper connecting seat provides longitudinal forced transmission for the variable orifice damper, and then the variable orifice damper provides a damping effect in the vertical direction; and the variable orifice damper receives sliding variable resistance and voltage signal values generated by the sliding rheostat, controls and adjusts the size of an internal orifice in real time, and provides real-time variable damping acting force.

Description

Technical Field

[0001] The invention relates to the technical field of elevators, and in particular to an elevator guide and vibration suppression device with adaptive variable damping. Background Art

[0002] The vertical guide devices (guide shoes, guide rollers, etc.) of existing elevators mostly use friction, rollers, etc. to cooperate with the guide rails to achieve the purpose of vertical guidance and horizontal vibration isolation of the elevator. Among them, roller guide shoes are divided into active and passive types. Active guide shoes mostly use motors to achieve the effect of active vibration suppression.

[0003] The above equipment has a problem that the cost and vibration suppression effect cannot be taken into account at the same time: the active control solution requires the use of motors, matching printing plates, corresponding control programs, and multiple debugging of the vibration suppression effect during on-site installation, which is extremely costly; however, among passive guide shoes, the vibration suppression effect of friction guide shoes is extremely poor, and the vibration suppression effect of roller guide shoes is improved compared to friction guide shoes, but it is still worse than that of active guide shoes. Even if the passive roller guide shoe is equipped with a damper, when the damping effect of the damper (usually the size of the throttle hole or the stroke of the damper) is certain, its special effect vibration suppression range is only applicable to fixed frequencies, and will be invalid for complex vibration conditions.

[0004] The elevator operation condition is relatively complex, and there is often an eccentric load. At this time, the car is tilted relative to the horizontal line, resulting in excessive compression of the spring on one side. At this time, its dynamic stiffness will also increase, resulting in a mismatch in the pre-adjusted damping ratio in the original equilibrium state. At this time, its vibration suppression effect is reduced or even ineffective. The corresponding public document number of the prior art is: CN111936410A. Summary of the invention

[0005] The technical problem to be solved by the present invention is to balance the cost of the elevator with the vibration suppression effect under multiple working conditions.

[0006] In order to solve the above technical problems, the present invention provides an elevator guide and vibration suppression device with adaptive variable damping, which is characterized by comprising:

[0007] The roller guide shoe mechanical body is used to fix and support the sliding rheostat and the roller guide shoe;

[0008] The sliding rheostat is fixed on the roller guide shoe mechanical body and connected to the guide shoe vibration transmission member. Its fixed end is fixed on the screw position of the guide shoe base, and its movable end is fixed on the swing arm connected to the guide wheel. After the movable end moves due to the movement of the swing arm, a distance difference is formed between the movable end and the fixed end on the rheostat resistor, thereby generating a sliding resistance and a voltage signal value, which is transmitted to the variable throttle damper through the output line output;

[0009] The damper connection seat provides longitudinal forced transmission for the variable orifice damper, and the variable orifice damper provides vertical damping;

[0010] The variable throttle orifice damper receives the sliding resistance and voltage signal value generated by the sliding rheostat to control and adjust the size of the internal throttle orifice in real time, providing real-time variable damping force.

[0011] Preferably, the variable throttle orifice damper is connected to the roller guide shoe mechanical body through a rotating shaft, which provides a rotational degree of freedom, thereby converting the movement of the swing arm around the axis caused by the change in the guide wheel position into a vertical action and transmitting it to the variable throttle orifice damper.

[0012] Preferably, the sliding rheostat is composed of a pair of spring guides and a resistance element, the spring guides and the resistance element are connected in sliding contact, and the distance between the spring guides changes with the change of the position of the guide wheel.

[0013] The invention discloses an elevator guidance and vibration suppression method with adaptive variable damping, which only relies on the combination of resistors, capacitors and sliding rheostats. Under a given voltage-stabilized power supply, different outputs are obtained by changing the connection length of the sliding rheostat on the resistor. The output is filtered by the combination of capacitors and resistors. The final output controls the opening and closing size of the throttle hole, thereby achieving the purpose of variable damping.

[0014] Preferably, it comprises:

[0015] Step 1: The voltage-stabilized power supply control system inputs the spring compression amount parameter of the relative position between the guide rod and the mechanical body and the resistance value parameter of the sliding rheostat;

[0016] Step 2, the output signal of step 1 is filtered and processed to output power parameters;

[0017] Step 3: Control the damper through the power parameter output in step 2 to adjust the damping value.

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

[0019] For safety and stability considerations, without changing the dynamic stiffness of other components, this patent provides an active guide shoe solution with adaptive variable damping that uses simple electrical equipment (sliding rheostat) and does not rely on control algorithms and printing plates. This patent uses the displacement of the guide shoe body base caused by the horizontal displacement of the car during elevator eccentric loading or movement, and the displacement of the guide wheel caused by the unevenness of the guide rail, resulting in the change in the relative distance between the guide wheel and the fulcrum, to change the damping ratio (throttle hole size) of the damper in real time, thereby achieving a horizontal vibration suppression effect with a variable damping ratio. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0021] Figure 1 It is a schematic diagram of the roller guide shoe mechanical body.

[0022] Figure 2 It is a schematic diagram of the use scenario of the elevator guidance and vibration suppression device with adaptive variable damping of the present invention.

[0023] Figure 3 It is a schematic diagram of the elevator guiding and vibration suppression device with adaptive variable damping of the present invention.

[0024] Figure 4 The present invention is a simple control logic diagram of the elevator guide and vibration suppression device with adaptive variable damping.

[0025] Description of Reference Numerals

[0026] serial number name serial number name 1 Roller guide shoe mechanical body 2 Variable orifice damper 3 Damper connector 4 Sliding rheostat 5 Fixed end 6 Spring guide 7 resistance 8 Output line 9 Shaft 10 Guide wheel DETAILED DESCRIPTION

[0027] The following describes the implementation methods of the present invention through specific specific embodiments, and those skilled in the art can fully understand other advantages and technical effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through different specific implementation methods, and the details in this specification can also be applied based on different viewpoints, and various modifications or changes can be made without deviating from the overall design concept of the invention. It should be noted that the following embodiments and the features in the embodiments can be combined with each other in the absence of conflict. The following exemplary embodiments of the present invention can be implemented in a variety of different forms and should not be interpreted as being limited to the specific embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the technical solutions of these exemplary specific embodiments to those skilled in the art.

[0028] Example 1

[0029] This patent is composed of a roller guide shoe mechanical body 1, a variable orifice damper 2, a damper connection seat 3 and a sliding rheostat 4. Among them, the damper connection seat 3 provides a longitudinal forced transmission for the variable orifice damper 2: through its connection with the rotating shaft 9 of the mechanical body, it provides a rotational freedom, so that the rotational movement of the guide rod 11 connected to the guide wheel 10 in the mechanical body can be converted into a vertical movement and transmitted to the damper 2, and then the variable orifice damper 2 provides a vertical damping effect.

[0030] The sliding rheostat 4 is fixed to the roller guide shoe mechanical body 1 by the fixed end 5, and the other end is also fixed to the roller guide shoe mechanical body 1 by welding. At this time, the sliding rheostat can change the connection distance between the spring guide piece 6 and the resistor 7 to form the function of the sliding rheostat. The output voltage and current are transmitted to the variable throttle orifice damper 2 by the output line 8, so that the internal throttle orifice changes with the output power of the output line 8. The shorter the distance between the resistor 7 and the two spring guide pieces 6, the smaller the resistance, the greater the output power, and the larger the throttle orifice.

[0031] Simple control logic such as Figure 4 As shown, there is no need to rely on high-cost items such as sensors and control algorithms, and the product design can be completed only through processes such as resistors and filters.

[0032] The present invention uses a simple electrical component such as a sliding rheostat to control the size of the damper throttle hole, thereby realizing variable damping that changes with the changes of the car system and its vibration.

[0033] Without changing the system, the sliding rheostat is used to record the change in the forced compression of the system itself (spring), so as to change the size of the throttle hole to adapt to the change in dynamic stiffness caused by it. When the compression is large, the resistance of the sliding rheostat becomes smaller, the opening of the throttle hole becomes larger, and the damping becomes smaller; when the compression is small, the resistance of the sliding rheostat becomes larger, the opening of the throttle hole becomes smaller, and the damping becomes larger.

[0034] Based on the throttle size controller, the car acceleration signal is picked up and the relevant control algorithm is produced. Compared with directly using the motor to suppress vibration, it is more efficient and stable, because the damping will not have a phase difference and will not have a counter-effect.

[0035] The present invention has been described in detail above through specific implementation modes and embodiments, but these do not constitute limitations of the present invention. Without departing from the principles of the present invention, those skilled in the art may also make many variations and improvements, which should also be regarded as the protection scope of the present invention.

Claims

1. An elevator guide and vibration suppression device with adaptive variable damping, characterized in that: include, The roller guide shoe mechanical body is used to fix and support the sliding rheostat and the roller guide shoe; The sliding rheostat is fixed on the roller guide shoe mechanical body and connected to the guide shoe vibration transmission member. Its fixed end is fixed on the screw position of the guide shoe base, and its movable end is fixed on the swing arm connected to the guide wheel. After the movable end moves due to the movement of the swing arm, a distance difference is formed between the movable end and the fixed end on the rheostat resistor, thereby generating a sliding resistance and a voltage signal value, which is transmitted to the variable throttle damper through the output line output; The damper connection seat provides longitudinal forced transmission for the variable orifice damper, and the variable orifice damper provides vertical damping; The variable throttle orifice damper receives the sliding resistance and voltage signal value generated by the sliding rheostat to control and adjust the size of the internal throttle orifice in real time, providing real-time variable damping force.

2. The elevator guide and vibration suppression device with adaptive variable damping according to claim 1, characterized in that: The variable throttle orifice damper is connected to the roller guide shoe mechanical body through a rotating shaft, which provides a rotational freedom, thereby converting the movement of the swing arm rotating around the axis caused by the change in the guide wheel position into a vertical action and transmitting it to the variable throttle orifice damper.

3. The elevator guide and vibration suppression device with adaptive variable damping according to claim 1, characterized in that: The sliding rheostat is composed of a pair of spring guides and a resistance element. The spring guides are connected to the resistance element in a sliding contact manner, and the distance between the spring guides changes with the change of the position of the guide wheel.

4. An adaptive variable damping elevator guidance and vibration suppression method, characterized in that: Relying only on the combination of resistors, capacitors and sliding rheostats, given a regulated power supply, different outputs are achieved by changing the length of the connection on the resistor through the sliding rheostat. This output is filtered through the capacitor-resistor combination, and the final output will control the opening and closing size of the throttle hole, thereby achieving the purpose of variable damping.

5. The elevator guidance and vibration suppression method with adaptive variable damping according to claim 4, comprising: Step 1: The voltage-stabilized power supply control system inputs the spring compression amount parameter of the relative position between the guide rod and the mechanical body and the resistance value parameter of the sliding rheostat; Step 2, the output signal of step 1 is filtered and processed to output power parameters; Step 3: Control the damper through the power parameter output in step 2 to adjust the damping value.

6. A vertical lift device, characterized in that It comprises the elevator guiding and vibration suppressing device with adaptive variable damping as claimed in any one of claims 1-3.

7. A vertical lift device, characterized in that It comprises a device formed by the adaptive variable damping elevator guidance and vibration suppression method as claimed in claim 4 or 5.

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