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Anti-reverse method and device for slewing brake and construction machinery

A technology for slewing braking and construction machinery, which is applied to fluid pressure actuation devices, mechanical equipment, fluid pressure actuation system components, etc., and can solve problems such as different and no longer adjusted

Active Publication Date: 2022-03-01
SANY HEAVY MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, once the hydraulic damping of the anti-reverse valve is designed, it is generally no longer adjusted
The overflow pressure of the slewing mechanism will be adjusted according to different models, resulting in different time for the anti-reverse valve to balance the hydraulic pressure of the two working oil ports of the slewing mechanism, resulting in construction machinery after slewing braking, There are still 1 or 2 swings

Method used

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  • Anti-reverse method and device for slewing brake and construction machinery
  • Anti-reverse method and device for slewing brake and construction machinery
  • Anti-reverse method and device for slewing brake and construction machinery

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0052] figure 1 For the structural representation of the engineering machinery 10 provided in this embodiment, please refer to figure 1 The engineering machinery 10 provided in this embodiment includes a body (shown in the figure), a hydraulic circuit 20, a controller 30, a rotational angular velocity sensor 40 and two pressure sensors 50, and the rotational angular velocity sensor 40 is arranged on the rotary mechanism of the hydraulic circuit 20 21 , two pressure sensors 50 are respectively arranged at both ends of the slewing mechanism 21 , and the controller 30 is electrically connected to the slewing angular velocity sensor 40 and the two pressure sensors 50 .

[0053] In the engineering machinery 10 provided in this embodiment, the rotary mechanism 21 in the hydraulic circuit 20 is respectively provided with a first working oil port 22 and a second working oil port 23, and the first working oil port 22 and the second working oil port 23 are respectively It is connected ...

no. 2 example

[0058] figure 2 Shown is a schematic block diagram of the flow of the anti-reverse method for slewing braking provided in this embodiment, and the anti-reversing method for slewing braking provided in this embodiment is applied to the construction machine 10 provided in the first embodiment. Please combine figure 1 and figure 2 As shown, the slewing brake anti-reverse method includes the following steps:

[0059] In step S101, the rotational angular velocity of the slewing mechanism 21 of the construction machine 10 is obtained in real time.

[0060] In this embodiment, the rotation angular velocity sensor 40 is arranged on the rotation mechanism 21 , and the controller 30 directly acquires the rotation angular velocity of the rotation mechanism 21 in real time through the rotation angular velocity sensor 40 .

[0061] In other embodiments, a rotation angle sensor can also be provided on the rotation mechanism 21, and the controller 30 can be connected with the rotation a...

no. 3 example

[0093] see Figure 8 , this embodiment provides a slewing brake anti-reverse device 100, which is applied to the construction machine 10 provided in the first embodiment. The slewing brake anti-reverse device 100 includes a first receiving module 110, a second receiving module 130, A determination module 150 and an execution module 170 .

[0094] The first receiving module 110 is configured to obtain the rotational angular velocity of the slewing mechanism 21 of the engineering machine 10 in real time.

[0095] In an embodiment of the present invention, step S101 may be performed by the first receiving module 110 .

[0096] The second receiving module 130 is configured to acquire the hydraulic pressure values ​​of the working oil ports at both ends of the slewing mechanism 21 .

[0097] In an embodiment of the present invention, step S102 may be performed by the second receiving module 130 .

[0098] The determination module 150 is configured to determine whether the slewin...

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PUM

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Abstract

The invention discloses a rotary braking anti-reverse method, device and construction machinery, and relates to the technical field of construction machinery. The slewing braking anti-reverse method includes: obtaining the slewing angular velocity of the slewing mechanism of the construction machinery in real time; obtaining the hydraulic value of the working oil ports at both ends of the slewing mechanism; when the slewing mechanism is braked and the slewing angular velocity reaches a preset value, according to The hydraulic value of the working oil ports at both ends of the slewing mechanism controls the reversing valve of the construction machine to switch the working position, so that the hydraulic values ​​of the working oil ports at both ends of the slewing mechanism are equal. The slewing brake anti-reverse method provided by the invention can quickly and reliably balance the hydraulic pressure of the working oil ports at both ends of the slewing mechanism, and avoid back-swinging of the construction machinery.

Description

technical field [0001] The invention relates to the technical field of construction machinery, in particular to a method and device for anti-reversal of slewing braking and construction machinery. Background technique [0002] As a common operation of construction machinery, slewing is widely used in the working conditions of various construction machinery such as excavators. When the slewing braking of construction machinery ends, due to the slewing inertia of the slewing mechanism, the construction machinery will swing left and right. [0003] In the industry, the method of installing an anti-reverse valve between the two working oil ports of the slewing mechanism is often used to suppress the left and right swinging phenomenon of construction machinery. However, once the hydraulic damping of the anti-reverse valve is designed, it is generally no longer adjusted. The overflow pressure of the slewing mechanism will be adjusted according to different models, resulting in di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B21/08
CPCF15B21/08F15B21/087
Inventor 陈向明师建鹏孙天时
Owner SANY HEAVY MACHINERY
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