External active shock absorption and noise reduction device for construction machinery and control method

Abstract

The invention discloses an external active shock absorption and noise reduction device for construction machinery and a control method, and mainly relates to the technical field of construction noise reduction. Comprising a noise-reduced main body, a first supporting mechanism, a second supporting mechanism, a sensing mechanism, a driving mechanism, a damping mechanism and a control mechanism, the bottom of the noise-reduced main body is connected with the second supporting mechanism, the first supporting mechanism is arranged on the periphery of the noise-reduced main body, and the sensing mechanism is arranged on the peripheral surface of the noise-reduced main body. The driving mechanism and the control mechanism are arranged in the first supporting mechanism, and the damping mechanism is arranged on the surface of the first supporting mechanism and located between the first supporting mechanism and the noise-reduced body. The device has the beneficial effects that the vibration is reduced by improving mechanical vibration noise, so that the working environment is improved, and the working efficiency and the working satisfaction degree are improved.

Description

Technical Field

[0001] The invention relates to the technical field of construction noise reduction, and in particular to an external active vibration reduction and noise reduction device for construction machinery and a control method. Background Art

[0002] The main source of noise at the construction site of power transmission and transformation projects comes from construction machinery. The noise emitted by construction machinery can be classified into: engine running noise, generator rotation noise, belt friction noise, exhaust pipe resonance noise, drive shaft rotation noise, etc.

[0003] After the engine is running, the friction of its internal components and the vibration generated by the explosion of the internal combustion engine are the main sources of noise. In addition, the shock-absorbing components of the machine itself are wearing parts. The shock absorption is weakened. The noise emission during the construction process is far greater than the standard of "Environmental Noise Emission Standards for Construction Sites", which stipulates that it should not be greater than 70dB during the day and should not be greater than 55dB at night.

[0004] Therefore, there is an urgent need for an external construction machinery active vibration reduction and noise reduction device and control method to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide an active vibration reduction and noise reduction device and control method for an external construction machinery, which can reduce vibration by improving mechanical vibration noise, thereby helping to improve the working environment, improve work efficiency and job satisfaction.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] On the one hand, an external active shock-absorbing and noise-reducing device for construction machinery is provided, including a main body to be noise-reduced, a first supporting mechanism, a second supporting mechanism, a sensing mechanism, a driving mechanism, a shock-absorbing mechanism and a control mechanism, wherein the bottom of the main body to be noise-reduced is connected to the second supporting mechanism, the first supporting mechanism is arranged around the periphery of the main body to be noise-reduced, the sensing mechanism is arranged on the surrounding surface of the main body to be noise-reduced, the driving mechanism and the control mechanism are respectively arranged in the first supporting mechanism, and the shock-absorbing mechanism is arranged on the surface of the first supporting mechanism and is located between the first supporting mechanism and the main body to be noise-reduced.

[0008] Preferably, the first support mechanism includes a first support frame and a second support frame, the first support frame includes a first support rod, a second support rod, a third support rod and a fourth support rod, the first support rod, the second support rod, the third support rod and the fourth support rod are perpendicular to each other and are in the same plane, the first support rod, the second support rod, the third support rod and the fourth support rod are respectively provided with telescopic joints near both ends, and a plurality of telescopic fixing holes are respectively provided on the first support rod, the second support rod, the third support rod, the fourth support rod and the telescopic joints, the second bracket and the first bracket have the same structure and shape, the central axis of the second bracket coincides with the central axis of the first bracket, and the second bracket and the first bracket are arranged to intersect vertically.

[0009] Preferably, the shock absorbing mechanism is specifically six shock absorbing actuators, which include a telescopic lower section, one end of which is connected to the first supporting mechanism, and the other end is provided with an opening, in which a telescopic upper section is sleeved, and a rubber pad is provided at the end of the telescopic upper section.

[0010] Preferably, the sensing mechanism is specifically six vibration sensors, and the vibration sensors are respectively arranged on the surface of the noise-reduced body, and the second supporting mechanism is specifically a fixing bracket of the noise-reduced body, including four cylindrical structures, which are arranged on the bottom surface of the noise-reduced body.

[0011] Preferably, the driving mechanism is specifically a driving motor, and the driving motor is electrically connected to the shock absorbing mechanism, the telescopic joint, and the control mechanism respectively, and the control mechanism is specifically a single chip microcomputer.

[0012] On the other hand, a control method for the above-mentioned external construction machinery active vibration reduction and noise reduction device is provided, comprising the following steps:

[0013] S1: Collect vibration data information of the noise reduction subject;

[0014] S2: transmit the vibration information to the microcontroller and process the data information;

[0015] S3: The single chip microcomputer sends the data information processing result to the drive motor.

[0016] Preferably, the step S1 specifically comprises:

[0017] The vibration data of the main body to be noise-reduced is collected by a vibration sensor arranged on the surface of the main body to be noise-reduced.

[0018] Preferably, the step S2 is specifically:

[0019] The vibration data collected by the vibration sensor is sent to the single-chip microcomputer, which compares the collected vibration data with the vibration threshold stored in the single-chip microcomputer. If the vibration data is greater than or equal to the vibration threshold, it is recorded as abnormal vibration. If the vibration data is less than the vibration threshold, it is recorded as normal vibration.

[0020] Preferably, the step S3 is specifically:

[0021] When abnormal vibration occurs, the single chip microcomputer sends a command to the drive motor, and the drive motor controls the telescopic joint and the shock absorbing mechanism to perform telescopic movement.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. The present invention adopts the method of suppressing mechanical vibration by fixing with external force, which can reduce mechanical noise and reduce the sound radiation caused by mechanical vibration, thereby achieving the purpose of reducing noise.

[0024] 2. The design of the present invention can reduce the wear and fatigue of the equipment by reducing vibration, thereby improving the reliability and service life of the equipment and reducing maintenance costs.

[0025] 3. The present invention improves mechanical vibration noise: reducing vibration helps to improve the working environment, increase work efficiency and job satisfaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is the front view of the present invention.

[0027] Figure 2 It is a flow chart of the method of the present invention.

[0028] Numbers shown in the accompanying drawings:

[0029] 1. Noise-reduced main body; 2. First support frame; 3. Second support frame; 4. Fixing bracket of noise-reduced main body; 5. Shock-absorbing actuator; 6. Vibration sensor; 7. Telescopic fixing hole; 8. Telescopic joint. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the application equally.

[0031] In the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention and should not be understood as limitations on the present invention.

[0032] In the present invention, terms such as "fixed connection", "connected", "connection", etc. should be understood in a broad sense, indicating that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. Relevant scientific research or technical personnel in this field can determine the specific meanings of the above terms in the present invention according to specific circumstances, and they should not be understood as limiting the present invention.

[0033] Example:

[0034] like Figure 1 As shown, this embodiment provides an active shock-absorbing and noise-reducing device for an external construction machinery, including a noise-reduced main body, a first supporting mechanism, a second supporting mechanism, a sensing mechanism, a driving mechanism, a shock-absorbing mechanism and a control mechanism. The bottom of the noise-reduced main body is connected to the second supporting mechanism, the first supporting mechanism is arranged on the periphery of the noise-reduced main body, the sensing mechanism is arranged on the surrounding surface of the noise-reduced main body, the driving mechanism and the control mechanism are respectively arranged in the first supporting mechanism, and the shock-absorbing mechanism is arranged on the surface of the first supporting mechanism and is located between the first supporting mechanism and the noise-reduced main body.

[0035] Among them, the first supporting mechanism includes a first supporting frame and a second supporting frame, the first supporting frame includes a first supporting rod, a second supporting rod, a third supporting rod and a fourth supporting rod, the first supporting rod, the second supporting rod, the third supporting rod and the fourth supporting rod are perpendicular to each other and are on the same plane, telescopic joints are respectively provided near both ends of the first supporting rod, the second supporting rod, the third supporting rod, the fourth supporting rod and the telescopic joints, and a plurality of telescopic fixing holes are respectively provided through the first supporting rod, the second supporting rod, the third supporting rod, the fourth supporting rod and the telescopic joints, the second bracket and the first bracket have the same structure and shape, the central axis of the second bracket coincides with the central axis of the first bracket, and the second bracket and the first bracket are arranged to intersect vertically.

[0036] The shock absorbing mechanism is specifically six shock absorbing actuators, which include a telescopic lower section, one end of which is connected to the first supporting mechanism, and the other end is provided with an opening, in which a telescopic upper section is sleeved, and a rubber pad is provided at the end of the telescopic upper section.

[0037] The sensing mechanism is specifically six vibration sensors, and the vibration sensors are respectively arranged on the surface of the noise-reduced body. The second supporting mechanism is specifically a fixing bracket of the noise-reduced body, including four cylindrical structures, which are arranged on the bottom surface of the noise-reduced body.

[0038] The driving mechanism is specifically a driving motor, and the driving motor is electrically connected to the damping mechanism, the telescopic joint, and the control mechanism respectively, and the control mechanism is specifically a single chip microcomputer.

[0039] This embodiment also provides a control method based on the above-mentioned external construction machinery active vibration reduction and noise reduction device, comprising the following steps:

[0040] S1: Collect vibration data information of the noise reduction subject;

[0041] S2: transmit the vibration information to the microcontroller and process the data information;

[0042] S3: The single chip microcomputer sends the data information processing result to the drive motor.

[0043] The step S1 is specifically as follows:

[0044] The vibration data of the main body to be noise-reduced is collected by a vibration sensor arranged on the surface of the main body to be noise-reduced.

[0045] The step S2 is specifically as follows:

[0046] The vibration data collected by the vibration sensor is sent to the single-chip microcomputer, which compares the collected vibration data with the vibration threshold stored in the single-chip microcomputer. If the vibration data is greater than or equal to the vibration threshold, it is recorded as abnormal vibration. If the vibration data is less than the vibration threshold, it is recorded as normal vibration.

[0047] The step S3 is specifically as follows:

[0048] When abnormal vibration occurs, the single chip microcomputer sends a command to the drive motor, which controls the telescopic joint and the shock absorbing mechanism to perform telescopic movement, thereby controlling the contraction or extension of the first supporting mechanism and the extension of the shock absorbing mechanism to achieve clamping of the noise-reduced body, thereby achieving the shock-reducing and noise-reducing effect on the noise-reduced body.

Claims

1. An external active vibration and noise reduction device for construction machinery, characterized in that: The noise reduction device comprises a main body to be noise reduced, a first supporting mechanism, a second supporting mechanism, a sensing mechanism, a driving mechanism, a shock absorbing mechanism and a control mechanism. The bottom of the main body to be noise reduced is connected to the second supporting mechanism. The first supporting mechanism is arranged around the periphery of the main body to be noise reduced. The sensing mechanism is arranged on the surrounding surface of the main body to be noise reduced. The driving mechanism and the control mechanism are respectively arranged in the first supporting mechanism. The shock absorbing mechanism is arranged on the surface of the first supporting mechanism and is located between the first supporting mechanism and the main body to be noise reduced.

2. According to claim 1, an external construction machinery active vibration reduction and noise reduction device is characterized in that: The first support mechanism includes a first support frame and a second support frame, the first support frame includes a first support rod, a second support rod, a third support rod and a fourth support rod, the first support rod, the second support rod, the third support rod and the fourth support rod are perpendicular to each other and are on the same plane, telescopic joints are respectively provided near both ends of the first support rod, the second support rod, the third support rod, the fourth support rod and the telescopic joints, a plurality of telescopic fixing holes are respectively provided through the first support rod, the second support rod, the third support rod, the fourth support rod and the telescopic joints, the second support frame and the first support frame have the same structure and shape, the central axis of the second support frame coincides with the central axis of the first support frame, and the second support frame and the first support frame are arranged to intersect vertically.

3. According to claim 2, an external construction machinery active vibration reduction and noise reduction device is characterized in that: The shock absorbing mechanism is specifically six shock absorbing actuators, which include a telescopic lower section, one end of which is connected to the first supporting mechanism, and the other end is provided with an opening, in which a telescopic upper section is sleeved, and a rubber pad is provided at the end of the telescopic upper section.

4. According to claim 1, an external construction machinery active vibration reduction and noise reduction device is characterized in that: The sensing mechanism is specifically six vibration sensors, and the vibration sensors are respectively arranged on the surface of the noise-reduced body. The second supporting mechanism is specifically a fixing bracket of the noise-reduced body, including four cylindrical structures, which are arranged on the bottom surface of the noise-reduced body.

5. According to claim 3, an external construction machinery active vibration reduction and noise reduction device is characterized in that: The driving mechanism is specifically a driving motor, and the driving motor is electrically connected to the damping mechanism, the telescopic joint, and the control mechanism respectively, and the control mechanism is specifically a single chip microcomputer.

6. A control method for the active vibration reduction and noise reduction device for an external construction machinery as claimed in claim 1, characterized in that: The following steps are involved: S1: Collect vibration data information of the noise reduction subject; S2: transmit the vibration information to the microcontroller and process the data information; S3: The single chip microcomputer sends the data information processing result to the drive motor.

7. A control method according to claim 6, characterized in that: The step S1 is specifically as follows: The vibration data of the main body to be noise-reduced is collected by a vibration sensor arranged on the surface of the main body to be noise-reduced.

8. A control method according to claim 6, characterized in that: The step S2 is specifically as follows: The vibration data collected by the vibration sensor is sent to the single-chip microcomputer, which compares the collected vibration data with the vibration threshold stored in the single-chip microcomputer. If the vibration data is greater than or equal to the vibration threshold, it is recorded as abnormal vibration. If the vibration data is less than the vibration threshold, it is recorded as normal vibration.

9. A control method according to claim 8, characterized in that: The step S3 is specifically as follows: When abnormal vibration occurs, the single chip microcomputer sends a command to the drive motor, and the drive motor controls the telescopic joint and the shock absorbing mechanism to perform telescopic movement.

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