Integrated control system based on wheel excavator

Abstract

The invention discloses an integrated control system based on a wheel excavator, which comprises a key board, a controller, a bulldozing blade handle, a main pump P, a distribution valve V, a rotary joint Z, a reversing valve H, a stop valve A0, a stop valve A1, a stop valve A2, a stop valve B1, a stop valve B2, a left bulldozing blade oil cylinder, a right bulldozing blade oil cylinder, a left supporting leg oil cylinder LZ and a right supporting leg oil cylinder RZ, an oil outlet of the main pump P is connected to a distribution valve V through a hose; a bulldozing blade linkage oil outlet in the distribution valve V is connected to a port 10'of a rotary connector Z through a hose, the port 10 of the rotary connector Z is connected with a port P of a reversing valve H through a hose, and a port A of the reversing valve H is connected to a stop valve A1 and a stop valve B1 through hoses and a three-way connector. And the problem that the stability of the whole machine cannot be met by synchronous lifting of the left and right supporting legs is solved, and the operation efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of excavator technology, specifically to an integrated control system based on a wheeled excavator. Background Technology

[0002] Currently, with the increasing demand for wheeled excavators, their application scope has expanded from simple municipal construction and landscaping to woodlands, mountains, and other areas. In municipal and landscaping construction, traditional wheeled excavators can achieve stable support by raising and lowering both outriggers simultaneously. However, in uneven environments such as woodlands and mountains, adjustments are required to ensure stable support from both outriggers, significantly increasing working time and resulting in poor environmental adaptability.

[0003] Therefore, the problem that the inventors wanted to solve was to design a system in which the left and right outriggers could be raised and lowered independently and the outrigger control modes could be switched. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide an integrated control system for wheeled excavators that enables independent control of the lifting and lowering of the left and right outriggers and allows for switching of outrigger control modes.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: an integrated control system based on a wheeled excavator, comprising a button panel, a controller, a bulldozer blade handle, a main pump P, a distribution valve V, a rotary joint Z, a directional valve H, shut-off valves A0, A1, A2, B1, and B2, a left bulldozer blade cylinder, a right bulldozer blade cylinder, a left outrigger cylinder LZ, and a right outrigger cylinder RZ. The oil outlet of the main pump P is connected to the distribution valve V via a hose. The bulldozer blade oil outlet in the distribution valve V is connected to port 10' of the rotary joint Z via a hose. Port 10 of the rotary joint Z is connected to port P of the directional valve H via a hose. Port A of the directional valve H is connected to shut-off valves A1 and B1 via hoses and a tee connector, respectively. Shut-off valve A1 is connected to the small chamber hydraulic cylinder of the right outrigger cylinder RZ via a hose. The hydraulic lock is connected to the small chamber hydraulic lock of the left outrigger cylinder LZ via a three-way connector. The shut-off valve B1 is connected to the small chamber hydraulic lock of the left and right bulldozer cylinders via a hose. The B port of the directional valve H is connected to A2 and the shut-off valve B2 via a hose and a three-way connector, respectively. The shut-off valve A2 is connected to the large chamber hydraulic lock of the right outrigger cylinder RZ via a hose. The shut-off valve B2 is connected to the large chamber hydraulic lock of the left outrigger cylinder LZ via a hose. The B port of the directional valve H is connected to the A port of the shut-off valve A0 via a hose. The B port of the shut-off valve A0 is connected to the three-way connector of the large chamber hydraulic lock of the left and right bulldozer cylinders via a hose. The T port of the directional valve H is connected to port 12 of the rotary joint via a hose. The 12' port of the rotary joint is connected to the oil tank via a hose.

[0006] Furthermore, it includes a controller for the excavator, which is located inside the excavator's cab.

[0007] Furthermore, the controller is electrically connected to a keypad.

[0008] Furthermore, the keypad is equipped with four control buttons, namely bulldozer blade C1, left outrigger C2, right outrigger C3, and left and right outriggers C4.

[0009] Furthermore, the controller is electrically connected to the main pump P, rotary joint Z, reversing valve H, shut-off valve A0, shut-off valve A1, shut-off valve A2, shut-off valve B1, and shut-off valve B2, respectively.

[0010] The beneficial effects of this invention are: 1. This invention integrates a control system to enable independent control of the left and right outriggers in a wheeled excavator, thereby eliminating the need for road surface repair in uneven working environments, solving the problem of insufficient overall machine stability due to the synchronous lifting of the left and right outriggers, and improving the working efficiency of the wheeled excavator. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the electrical system of the present invention.

[0012] Figure 2 This is a hydraulic schematic diagram of the present invention. Detailed Implementation

[0013] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0014] Example 1: See Figures 1 to 2 This is a schematic diagram of an electrical system and a hydraulic schematic diagram of an invention. It describes an integrated control system based on a wheeled excavator, including a button panel, a controller, a bulldozer blade handle, a main pump P, a distribution valve V, a rotary joint Z, a directional valve H, stop valves A0, A1, A2, B1, and B2, a left bulldozer blade cylinder, a right bulldozer blade cylinder, a left outrigger cylinder LZ, and a right outrigger cylinder RZ. The outlet of the main pump P is connected to the distribution valve V via a hose. The outlet of the bulldozer blade handle in the distribution valve V is connected to port 10' of the rotary joint Z via a hose. Port 10 of the rotary joint Z is connected to port P of the directional valve H via a hose. Port A of the directional valve H is connected to stop valves A1 and B1 via hoses and a tee connector. Stop valve A1 is connected to the small chamber of the right outrigger cylinder RZ via a hose. The hydraulic lock is connected to the small chamber hydraulic lock of the left outrigger cylinder LZ via a tee connector. The shut-off valve B1 is connected to the small chamber hydraulic lock of the left and right bulldozer cylinders via a hose. The B port of the directional valve H is connected to A2 and the shut-off valve B2 via a hose and a tee connector. The shut-off valve A2 is connected to the large chamber hydraulic lock of the right outrigger cylinder RZ via a hose. The shut-off valve B2 is connected to the large chamber hydraulic lock of the left outrigger cylinder LZ via a hose. The B port of the directional valve H is connected to the A port of the shut-off valve A0 via a hose. The B port of the shut-off valve A0 is connected to the tee connector of the large chamber hydraulic lock of the left and right bulldozer cylinders via a hose. The T port of the directional valve H is connected to port 12 of the rotary joint via a hose. Port 12' of the rotary joint is connected to the oil tank via a hose.

[0015] The excavator includes a controller, which is located inside the excavator's cab. The controller is electrically connected to a button panel with four control buttons: C1 for the bulldozer blade, C2 for the left outrigger, C3 for the right outrigger, and C4 for both outriggers. By selecting and pressing the control buttons, preset modes can be switched, namely controlling the bucket, controlling the left outrigger, controlling the right outrigger, and controlling both the left and right outriggers simultaneously.

[0016] The controller is electrically connected to the main pump P, rotary joint Z, directional valve H, shut-off valve A0, shut-off valve A1, shut-off valve A2, shut-off valve B1, and shut-off valve B2 respectively. The controller can directly issue commands through control signals to control each valve.

[0017] When the user performs button operations on the four command buttons on the CAN button panel—bulldozer C1, left outrigger C2, right outrigger C3, and left / right outrigger C4—for example, when the user presses the left outrigger C2 button, the electrical control takes priority. The controller B receives the command from the CAN button panel C2 and outputs the corresponding control logic electrical signal, which is then transmitted to the shut-off valves A0 / B1 / A2 via the electrical channel rotary joint Z to prepare for hydraulic control. At this time, the user manipulates the bulldozer handle T to achieve hydraulic control. Pushing the bulldozer handle T forward (left outrigger lowering function) moves the valve core of the distribution valve V, guiding the high-pressure oil from the main pump P to the reversing valve H, and then through the shut-off valve A1 to the small chamber of the left outrigger cylinder LZ, realizing the left outrigger raising action. When the user pulls back the dozer blade handle T (left outrigger raising function), sensor G1 collects the signal and transmits it to controller B. Controller B outputs a control logic signal, which is transmitted to directional valve H via the electrical channel rotary joint Z. Directional valve H reverses, and the high-pressure oil from main pump P passes through main valve V, then through the reversed directional valve H, and finally through shut-off valve B2 to reach the large chamber of left outrigger cylinder LZ, thus lowering the left outrigger. The user can access corresponding electrical and hydraulic control commands via the button panel (dozer blade C1, left outrigger C2, right outrigger C3, left and right outriggers C4), enabling different functions for each button.

[0018] This invention integrates a control system to enable independent control of the left and right outriggers in a wheeled excavator. This allows for operation on uneven surfaces without the need for road surface repair, solves the problem of inconsistent machine stability caused by the synchronous lifting of the left and right outriggers, and improves the operating efficiency of the wheeled excavator.

Claims

1. An integrated control system based on a wheeled excavator, characterized in that: The system includes a button panel, controller, bulldozer blade handle, main pump P, distribution valve V, rotary joint Z, directional valve H, shut-off valves A0, A1, A2, B1, and B2, left bulldozer blade cylinder, right bulldozer blade cylinder, left outrigger cylinder LZ, and right outrigger cylinder RZ. The outlet of the main pump P is connected to the distribution valve V via a hose. The bulldozer blade outlet of the distribution valve V is connected to port 10' of the rotary joint Z via a hose. Port 10 of the rotary joint Z is connected to port P of the directional valve H via a hose. Port A of the directional valve H is connected to shut-off valves A1 and B1 via hoses and a tee connector. Shut-off valve A1 is connected to the hydraulic lock of the small chamber of the right outrigger cylinder RZ via a hose and to the left outrigger cylinder LZ via a tee connector. At the small-cavity hydraulic lock, the shut-off valve B1 is connected via a hose to the small-cavity hydraulic lock of the left and right bulldozer cylinders. The B port of the directional valve H is connected via a hose and a tee connector to A2 and shut-off valve B2, respectively. The shut-off valve A2 is connected via a hose to the large-cavity hydraulic lock of the right outrigger cylinder RZ. The shut-off valve B2 is connected via a hose to the large-cavity hydraulic lock of the left outrigger cylinder LZ. The B port of the directional valve H is connected via a hose to the A port of the shut-off valve A0. The B port of the shut-off valve A0 is connected via a hose to the tee connector of the large-cavity hydraulic lock of the left and right bulldozer cylinders. The T port of the directional valve H is connected via a hose to port 12 of the rotary joint. Port 12' of the rotary joint is connected via a hose to the oil tank.

2. The integrated control system based on a wheeled excavator according to claim 1, characterized in that: Includes a controller for the excavator, which is located inside the excavator's cab.

3. The integrated control system based on a wheeled excavator according to claim 2, characterized in that: The controller is electrically connected to a keypad.

4. The integrated control system based on a wheeled excavator according to claim 3, characterized in that: The button panel is equipped with four control buttons, namely bulldozer blade C1, left outrigger C2, right outrigger C3, and left and right outriggers C4.

5. The integrated control system based on a wheeled excavator according to claim 2, characterized in that: The controller is electrically connected to the main pump P, rotary joint Z, reversing valve H, shut-off valve A0, shut-off valve A1, shut-off valve A2, shut-off valve B1, and shut-off valve B2, respectively.

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