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Shock excitation beam protection device and resonance crusher

A protection device and excitation beam technology, which is applied to roads, road repairs, roads, etc., can solve the problems of being easily affected by the transmission mechanism, such as the lifting mechanism, the acceleration sensor’s continuous accuracy is not good, and the continuous working time is not long. To achieve the effect of prolonging the trouble-free working time, prolonging the continuous working time and reducing the impact

Active Publication Date: 2021-03-19
YICHANG JIANGXIA MARINE MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent document CN109629390A describes a device and method for automatically controlling the excitation frequency of a concrete road resonance crushing vehicle. An acceleration sensor is used to detect the natural frequency of the road surface. However, the device of this scheme is easily affected by the transmission mechanism, such as the lifting mechanism. Resulting in low measurement accuracy, and poor sustained accuracy of the accelerometer under high vibration conditions
The natural frequency of the existing excitation beam is within the natural frequency range of the cement pavement, resulting in a short continuous working time

Method used

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  • Shock excitation beam protection device and resonance crusher
  • Shock excitation beam protection device and resonance crusher
  • Shock excitation beam protection device and resonance crusher

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 Among them, an excitation beam protection device, it includes a position sensor 14 arranged on the lifting hydraulic cylinder 4, and the position sensor 14 is used to detect the extension length of the lifting hydraulic cylinder 4; the position sensor 14 in this example is preferably A Hall sensor is used, and the Hall sensor is in contact with the piston rod of the lifting hydraulic cylinder 4 or keeps a gap below 1 mm to detect the protruding length of the piston rod. The retracted position is used as the origin, and the previous or preset maximum extension length is used as the memory point. This solution can roughly control the lowering position of the excitation beam 1 .

[0041] It also includes a pressure sensor 20 arranged at one of the hinge positions between the counterweight beam 12 and the lifting hydraulic cylinder 4, or at one of the hinge positions between the counterweight beam 13 and the counterweight beam 12 and the excitation beam 1....

Embodiment 2

[0054] On the basis of Example 1, such as image 3 , 4 Among them, a resonance crusher adopting the above-mentioned excitation beam protection device, the vehicle body 3 is connected with the excitation beam 1 through the support shaft 7, and a flexible support sleeve 9 is provided between the support shaft 7 and the vehicle body 3, and the excitation One end of the vibration beam 1 is provided with a vibration exciter 2, and the vibration exciter 2 is connected with an excitation motor 8;

[0055] The counterweight shaft 6 of the excitation beam 1 is connected with the counterweight beam 12 through the counterweight rod 13, and one end of the counterweight beam 12 is connected with the vehicle body in a relatively rotatable manner, and the other end is provided with a counterweight 10, and the counterweight beam 12 Connect with the car body through the lifting hydraulic cylinder 4 to control the lifting of the hammer head 108 of the exciting beam 1;

[0056] The position se...

Embodiment 3

[0068] On the basis of Embodiment 2, a protection and detection method for the above-mentioned resonance crusher, comprising the following steps:

[0069] S1. Before the cement pavement crushing construction, the lifting hydraulic cylinder 4 puts down the counterweight beam 12, and the exciting beam 1 falls accordingly. As the position sensor 14 detects that it has protruded by a preset length, the hammer head 108 approaches the ground. The main control device such as PLC controls the buffer valve 18 to switch from the direct oil return circuit to the oil return branch 25. Since the set flow valve 19 reduces the flow rate, the falling speed of the hammer head 108 slows down until the pressure sensor 20 detects that the pressure is greatly reduced. reduce, that is, the hammer head 108 is in reliable contact with the ground.

[0070] The lifting mechanism puts the excitation beam protection device 5 down. The specific steps are: the air pump works to supply air to the air source...

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Abstract

The invention provides a shock excitation beam protection device and a resonance crusher, and relates to the field of cement pavement crushing equipment, the shock excitation beam protection device comprises a position sensor arranged on a lifting hydraulic cylinder, and the position sensor is used for detecting the extension length of the lifting hydraulic cylinder; the device also includes a pressure sensor that is arranged at the hinged position of the balance weight beam and the lifting hydraulic cylinder or at one of the hinged positions of the balance weight rod and the balance weight beam as well as the exciting beam and is used for detecting whether the exciting beam is in a suspended state or not. The stroke position of the lifting hydraulic cylinder is detected and the pressure sensor is arranged in a matched mode to guarantee that a hammer head of the shock excitation beam makes reliable contact with the ground, and damage caused by empty vibration of the shock excitation beam is avoided.

Description

technical field [0001] The invention relates to the field of cement pavement crushing equipment, in particular to an excitation beam protection device and a resonance crusher. Background technique [0002] Cement pavement crushing construction is to crush the existing cement pavement into particles with large particle size at the bottom and small particle size at the top. After rolling and paving asphalt concrete, it has better average bearing capacity and more uniform deformation, thus extending A construction method for the service life of the pavement. Resonance refers to the phenomenon that the amplitude of the system increases significantly when the excitation frequency of the system is close to a certain natural frequency of the system. The principle of the resonance crushing vehicle is used to break the road surface. The vibration of the resonance crushing vehicle drives the eccentric block to rotate, generating a certain eccentric force, which makes the excitation b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C23/12
CPCE01C23/122
Inventor 何明黑保江王军陈志勇柳文星
Owner YICHANG JIANGXIA MARINE MACHINERY
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