US-12618218-B2 - Modular excavator

US12618218B2US 12618218 B2US12618218 B2US 12618218B2US-12618218-B2

Abstract

The present disclosure provides a modular excavator, including a plurality of assembly modules that are detachably connected, the plurality of assembly modules including: a frame turntable base module; a track beam assembly module connected to the frame turntable base module; a track module connected to the track beam assembly module; a slewing drive module connected to the frame turntable base module; a power assembly module connected to the frame turntable base module; a counterweight module connected to the power assembly module; a cab module connected to the frame turntable base module; a fuel tank module connected to the frame turntable base module; a boom assembly module connected to the frame turntable base module; a bucket arm assembly module connected to the boom assembly module; and a work tool module connected to the bucket arm assembly module.

Inventors

Zhanrui SUN
Yong Li
Yong Zhang

Assignees

JIANGSU XCMG CONSTRUCTION MACHINERY RESEARCH INSTITUTE LTD.

Dates

Publication Date: 20260505
Application Date: 20211223
Priority Date: 20211202

Claims (18)

1 . A modular excavator, comprising a plurality of assembly modules that are detachably connected, the plurality of assembly modules comprising: a frame turntable base module; a track beam assembly module configured to be connected to the frame turntable base module; a track module configured to be connected to the track beam assembly module; a slewing drive module configured to be connected to the frame turntable base module; a power assembly module configured to be connected to the frame turntable base module; a counterweight module configured to be connected to the power assembly module; a cab module configured to be connected to the frame turntable base module; a fuel tank module configured to be connected to the frame turntable base module; a boom assembly module configured to be connected to the frame turntable base module; a bucket arm assembly module configured to be connected to the boom assembly module; and a work tool module configured to be connected to the bucket arm assembly module; wherein the modular excavator comprises two counterweight modules, the two counterweight modules comprising a lower counterweight module and an upper counterweight module, with guide posts being provided between connecting surfaces of the lower counterweight module and the upper counterweight module, the lower counterweight module and the upper counterweight module being locked by locking portions; and wherein the locking portion comprises: a chain; a hook provided on the lower counterweight module, a first end of the chain being hooked to the hook; an adjustment plate locked to the upper counterweight module in a position adjustable manner with respect to the upper counterweight module, and having a through hole, a second end of the chain passing through the through hole; and a stopper removably fixed to a side of the adjustment plate away from the hook, and configured to partially cover the through hole to restrict part of links of the chain between the hook and the stopper.
2 . The modular excavator according to claim 1 , wherein the weight of each assembly module is less than 2.8 tons.
3 . The modular excavator according to claim 1 , wherein at least two assembly modules are connected by a quick connection structure, the quick connection structure comprising: a guide positioning structure comprising two mutually cooperating guide elements that are provided on two assembly modules to be connected, respectively, the two guide elements being configured to guide the two assembly modules to be connected to reach and be positioned at an assembly position; and a locking structure configured to lock the two assembly modules at the assembly position.
4 . The modular excavator according to claim 3 , wherein the two mutually cooperating guide elements of the guide positioning structure comprise a guide positioning plate and a guide positioning pin shaft, the guide positioning plate having a guide opening and a positioning pin slot communicated with the guide opening, and the guide positioning pin shaft being configured to enter the positioning pin slot through the guide opening, and the guide positioning pin shaft cooperating with the positioning pin slot when the two assembly modules are in a connected state.
5 . The modular excavator according to claim 4 , wherein the guide positioning structure comprises at least two sets of guide elements, two guide elements of each set of guide elements cooperating with each other; and the locking structure comprises a limiting plate, which is configured to connect the two guide elements of the same set of guide elements to lock the relative positions of the two guide elements in at least one degree of freedom.
6 . The modular excavator according to claim 3 , wherein the guide positioning structure further comprises two mutually cooperating positioning elements that are provided on the two assembly modules, respectively, namely a positioning plate and a cooperating plate, which, when the two assembly modules are in the connected state, abut against each other to position the two assembly modules at the assembly position.
7 . The modular excavator according to claim 3 , wherein the locking structure comprises two locking portions, with self-locking pin holes, that are provided on the two assembly modules, respectively, and a self-locking pin shaft configured to cooperate with the two self-locking pin holes.
8 . The modular excavator according to claim 7 , wherein the two locking portions of the locking structure comprise a support plate and a pin shaft mounting plate, and the self-locking pin shaft cooperates with the two self-locking pin holes in the support plate and in the pin shaft mounting plate when the two assembly modules are in the connected state.
9 . The modular excavator according to claim 3 , wherein the track beam assembly module is connected to the frame turntable base module by the quick connection structure; and/or the power assembly module is connected to the frame turntable base module by the quick connection structure; and/or the cab module is connected to the frame turntable base module by the quick connection structure; and/or the fuel tank module is connected to the frame turntable base module by the quick connection structure.
10 . The modular excavator according to claim 1 , wherein at least two of the plurality of assembly modules comprise hydraulic lines, the hydraulic lines of the at least two assembly modules being connected by a quick connect plug; and/or at least two of the plurality of assembly modules comprise electrical lines, the electrical lines of the at least two assembly modules being connected by a quick connect plug.
11 . The modular excavator according to claim 1 , wherein the frame turntable base module comprises a turntable main body, with a collar being provided on the turntable main body, the slewing drive module being positioned to the collar by a positioning pin and connected thereto by a bolt.
12 . The modular excavator according to claim 1 , wherein the frame turntable base module (M 1 ) comprises a lower frame ( 1 A), a slew bearing assembly ( 1 B), a turntable main body ( 1 C), a central slewing body ( 1 D), a boom cylinder ( 1 E) and a first hydraulic line ( 1 F); the slew bearing assembly ( 1 B), the turntable main body ( 1 C), the central slewing body ( 1 D), the boom cylinder ( 1 E) and the first hydraulic line ( 1 F) are mounted on the lower frame ( 1 A); or wherein the track beam assembly module (M 2 , M 3 ) comprises a track longitudinal beam ( 2 A), a sprocket ( 2 B), an idler ( 2 C), a track roller ( 2 D), a carrier roller ( 2 E), a travel driving mechanism ( 2 F), and a second hydraulic line ( 2 H), the sprocket ( 2 B), the idler ( 2 C), the track roller ( 2 D), the carrier roller ( 2 E), the travel driving mechanism ( 2 F) and the second hydraulic line ( 2 H) are mounted on the track longitudinal beam ( 2 A), the track longitudinal beam ( 2 A) being connected to the lower frame ( 1 A) of the frame turntable base module (M 1 ) by a quick connection structure; or wherein the power assembly module comprises an engine system, a hood, a first bottom bracket, a hydraulic tank, a hydraulic main valve, a main pump, and a third hydraulic line, the engine system, the hood, the hydraulic tank, the hydraulic main valve, the main pump and the third hydraulic line being mounted on the first bottom bracket, and the first bottom bracket being connected to the lower frame of the frame turntable base module by a quick connection structure.
13 . The modular excavator according to claim 1 , wherein the modular excavator comprises at least two counterweight modules connected to the power assembly module.
14 . The modular excavator according to claim 1 , wherein the power assembly module is positioned to at least one counterweight module by a positioning pin and connected thereto by a bolt.
15 . The modular excavator according to claim 1 , wherein the adjustment plate comprises threaded holes, and the locking portion further comprises locking screws cooperating with the threaded holes, the position of the adjustment plate relative to the upper counterweight module being adjusted and the adjustment plate being locked to the upper counterweight module, by means of the locking screws.
16 . The modular excavator according to claim 1 , wherein the cab module comprises a cab and a second bottom bracket supporting the cab, the second bottom bracket being connected to a turntable main body of the frame turntable base module by the quick connection structure.
17 . The modular excavator according to claim 1 , wherein the fuel tank module comprises a fuel tank and a third bottom bracket supporting the fuel tank, the third bottom bracket being connected to a turntable main body of the frame turntable base module by the quick connection structure.
18 . The modular excavator according to claim 1 , wherein the boom assembly module (M 12 ) comprises a boom main body ( 12 A), a bucket arm cylinder ( 12 B) and a fourth hydraulic line ( 12 C), the bucket arm cylinder ( 12 B) and the fourth hydraulic line ( 12 C) being mounted on the boom main body ( 12 A), and a rear end of the boom main body ( 12 A) being positioned by means of a positioning structure and hinged by means of a pin shaft to a front end of a turntable main body ( 1 C) of the frame turntable base module (M 1 ); or wherein the bucket arm assembly module comprises a bucket arm main body, a bucket cylinder, a first quick-change device coupling portion, and a fifth hydraulic line, the bucket cylinder, the first quick-change device coupling portion and the fifth hydraulic line being mounted on the bucket arm main body, and a rear end of the bucket arm main body being positioned by means of a positioning structure and hinged by means of a pin shaft to a front end of the boom main body; and the work tool module comprises a tool body and a second quick-change device coupling portion provided on the tool body, a front end of the bucket arm main body being connected to the work tool module by the first quick-change device coupling portion and the second quick-change device coupling portion.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a National Stage Application of International Application No. PCT/CN2021/140801, filed 23 Dec. 2021, which claims benefit of Ser. No. 20/211,1462384.5, filed 2 Dec. 2021 in China, and which applications are incorporated herein by reference. To the extent appropriate, a claim of priority is made to each of the above disclosed applications. FIELD OF THE INVENTION The present disclosure relates to the technical field of engineering machinery, and particularly to a modular excavator. BACKGROUND OF THE INVENTION Various types of natural disasters occur frequently in China, which seriously threatens the safety of people's lives and property. In the face of frequent occurrence of various natural disasters, construction machinery, as an important part of emergency rescue equipment, plays a major role in disaster rescue. In mild and some moderate natural disasters, transport facilities are damaged to a small degree, and large general construction machinery can be used to quickly repair roads and bridges and then carry out emergency rescue work in a wide range; and in rescue environments for some moderate and severe natural disasters which cause serious damage to roads and bridges or serious blockage of land transportation or where transportation is not convenient in remote mountainous areas, the existing means of air transport has limited transport capacity, and there is still no effective equipment that can quickly reach a rescue site, which seriously delays the emergency rescue progress. SUMMARY OF THE INVENTION The present disclosure provides a modular excavator, including a plurality of assembly modules that are detachably connected, the plurality of assembly modules including: a frame turntable base module;a track beam assembly module configured to be connected to the frame turntable base module;a track module configured to be connected to the track beam assembly module;a clewing drive module configured to be connected to the frame turntable base module;a power assembly module configured to be connected to the frame turntable base module;a counterweight module configured to be connected to the power assembly module;a cab module configured to be connected to the frame turntable base module;a fuel tank module configured to be connected to the frame turntable base module;a boom assembly module configured to be connected to the frame turntable base module;a bucket arm assembly module configured to be connected to the boom assembly module; anda work tool module configured to be connected to the bucket arm assembly module. In the modular excavator of some embodiments, the weight of each assembly module is less than 2.8 tons. In the modular excavator of some embodiments, at least two assembly modules are connected by a quick connection structure, the quick connection structure including: a guide positioning structure including two mutually cooperating guide elements that are provided on two assembly modules to be connected, respectively, the two guide elements being configured to guide the two assembly modules to be connected to reach and be positioned at an assembly position; anda locking structure configured to lock the two assembly modules at the assembly position. In the modular excavator of some embodiments, the two mutually cooperating guide elements of the guide positioning structure include a guide positioning plate and a guide positioning pin shaft, the guide positioning plate having a guide opening and a positioning pin slot communicated with the guide opening, and the guide positioning pin shaft being configured to enter the positioning pin slot through the guide opening, and the guide positioning pin shaft cooperating with the positioning pin slot when the two assembly modules are in a connected state. In the modular excavator of some embodiments, the guide positioning structure includes at least two sets of guide elements, two guide elements of each set of guide elements cooperating with each other; andthe locking structure includes a limiting plate, which is configured to connect the two guide elements of the same set of guide elements to lock the relative positions of the two guide elements in at least one degree of freedom. In the modular excavator of some embodiments, the guide positioning structure further includes two mutually cooperating positioning elements that are provided on the two assembly modules, respectively, namely a positioning plate and a cooperating plate, which, when the two assembly modules are in the connected state, abut against each other to position the two assembly modules at the assembly position. In the modular excavator of some embodiments, the locking structure includes two locking portions, with self-locking pin holes, that are provided on the two assembly modules, respectively, and a self-locking pin shaft configured to cooperate with the two self-locking pin holes. In the modular excavator of some embodiments, th