Excavator rotary motor and excavator rotary hydraulic system

A technology of rotary motors and hydraulic systems, which is applied to earth movers/shovels, construction, etc., and can solve problems such as complex connections, multiple pipelines, and hydraulic oil leakage

Pending Publication Date: 2021-10-29
SHANDONG LINGONG CONSTR MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The second such as Image 6 As shown, the main difference between the second type and the first type is in releasing the brake of the slewing motor,
[0008] However, regardless of the first or second solution, the rotary motor must be equipped with an oil supply port M and an external pressure oil port and pipeline for releasing the brake of the rotary motor, resulting in many external oil ports and pipelines for the rotary motor. There are problems such as complicated connection and hydraulic oil leakage

Method used

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  • Excavator rotary motor and excavator rotary hydraulic system
  • Excavator rotary motor and excavator rotary hydraulic system
  • Excavator rotary motor and excavator rotary hydraulic system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] An excavator slewing motor, including a slewing motor 1, the slewing motor 1 includes a brake valve 106, a brake cylinder 107, a motor 114, a slewing device and a braking device, the motor 114 is connected to the slewing device, and the brake The actuator is respectively connected to the C2 port of the brake valve 106 and the signal a port, the A2 port of the brake valve 106 is connected to the brake cylinder 107, and the B2 port is connected to the Dr port. The spring chamber of the brake oil cylinder 107 is connected to the Dr port, and the Dr port is connected back to the hydraulic oil tank 6 . The motor 114 is connected to the reducer 108, and the reducer 108 decelerates the motor 114 to output.

[0034] The rotary motor 1 also includes a relief valve A104 and a relief valve B105, the oil ports on both sides of the motor 114 are respectively connected with the relief valve A104 and the relief valve B105, and the relief valve A104 and the relief valve B105 are connec...

Embodiment 2

[0036] Such as figure 1 As shown, an excavator slewing motor, the brake device includes a balance valve A101, the balance valve A101 is respectively connected with the C2 port of the brake valve 106, the signal a port, the motor 114, the external oil source A port and the external oil source Source B port connection.

[0037] The balance valve A101 has a three-position five-way structure. There are springs on both sides of the valve core for the return of the valve core. There are throttle holes 116 on both sides of the valve core of the balance valve A101. Through the throttle holes 116, the valve core can be made smooth and stable. Move with less shock.

[0038] The slewing device includes a one-way valve A102 and a one-way valve B103, and the signal oil ports on both sides of the balance valve A101 are respectively connected with the oil inlet of the one-way valve A102 and the oil inlet of the one-way valve B103, and the one-way valve A102 The oil outlet is connected to ...

Embodiment 3

[0040] Such as figure 2 As shown, an excavator slewing motor, the brake device includes a check valve C110 and a check valve D111, the oil outlet of the check valve C110 and the oil outlet of the check valve D111 are respectively connected to the brake valve 106 The C2 port is connected to the signal a port. The one-way valve C110 and the one-way valve D111 take a pressure signal from the main oil circuit to act on the brake valve 106 .

[0041] The rotary device includes a one-way valve A102, a one-way valve B103 and a balance valve B109. The oil outlet of the one-way valve A102 is respectively connected with the oil inlet of the one-way valve D111 and the B1 side of the motor 114. The one-way valve The oil outlet of B103 is respectively connected with the oil inlet of the one-way valve C110 and the A1 side of the motor 114, and the balance valve B109 is connected with the B1 side, the A1 side, the external oil source A port and the external oil source B port of the motor 1...

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PUM

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Abstract

The invention discloses an excavator rotary motor and an excavator rotary hydraulic system, and belongs to the technical field of engineering machinery. The excavator rotary motor and the excavator rotary hydraulic system overcome the defects that in the prior art, due to the fact that a traditional rotary motor is provided with multiple external oil ports and multiple pipelines, connection is complex, and hydraulic oil leaks. A body structure of the excavator rotary motor comprises a rotary motor, the rotary motor comprises a brake valve, a brake oil cylinder, a motor, a rotary device and a brake device, the motor is connected with the rotary device, the brake device is respectively connected with a port C2 and a signal port a of the brake valve, a port A2 of the brake valve is connected with the brake oil cylinder, and a port B2 is connected with a port Dr. The excavator rotary motor and the excavator rotary hydraulic system are mainly used on engineering machinery such as excavators.

Description

Technical field: [0001] The invention belongs to the technical field of construction machinery, and in particular relates to an excavator rotary motor and an excavator rotary hydraulic system. Background technique: [0002] In the prior art, there are two kinds of excavators that realize the rotation of the whole machine through the slewing motor. The first one is as Figure 5 as shown, [0003] 1. Rotation realization process: The operator operates the rotary pilot handle, connects the pilot oil circuit to push the main valve to rotate the spool, so that the hydraulic oil of the main pump enters the B port of the motor through the spool hole, and the hydraulic oil passes through the main valve from the A port The rotary spool returns oil to complete the whole process of rotary oil supply. [0004] 2. Slewing brake process: The operator operates the slewing pilot handle, closes the spool of the main valve slewing valve, the oil of the main pump cannot enter the motor, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F9/22
CPCE02F9/22E02F9/2264E02F9/2267
Inventor 宋旭东荆玉涛董立队郭志学李宣辰张明康
Owner SHANDONG LINGONG CONSTR MACHINERY
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