Modular excavator

Abstract

This disclosure provides a modular excavator including multiple detachably connected assembly modules, comprising: a chassis turntable base module; a track beam assembly module configured to be connected to the chassis turntable base module; a track module configured to be connected to the track beam assembly module; a swing drive module configured to be connected to the chassis turntable base module; a powertrain module configured to be connected to the chassis turntable base module; a counterweight module configured to be connected to the powertrain module; a cab module configured to be connected to the chassis turntable base module; a fuel tank module configured to be connected to the chassis turntable base module; a boom assembly module configured to be connected to the chassis turntable base module; a stick assembly module configured to be connected to the boom assembly module; and a work implement module configured to be connected to the stick assembly module. The modular excavator of this disclosure facilitates rapid arrival at the work site and ensures work progress.

Description

Technical Field

[0001] This disclosure relates to the field of engineering machinery technology, and in particular to a modular excavator. Background Technology

[0002] my country experiences frequent natural disasters, posing a serious threat to the lives and property of its people. Faced with these frequent natural disasters, engineering machinery, as a crucial component of disaster relief equipment, plays a vital role. For minor and some moderate natural disasters, where transportation infrastructure is relatively undamaged, large general-purpose engineering machinery can quickly repair roads and bridges, enabling large-scale rescue operations. However, for some moderate and severe natural disasters that cause severe damage to roads and bridges, severely disrupt land transportation, or create isolated mountainous areas, the limited capacity of existing air transport means means there is currently no effective equipment to quickly reach the rescue site, significantly delaying rescue efforts. Summary of the Invention

[0003] This disclosure provides a modular excavator including a plurality of detachably connected assembly modules, the plurality of assembly modules comprising:

[0004] Chassis turntable basic module;

[0005] The track beam assembly module is configured to connect to the chassis turntable base module;

[0006] The track module is configured to connect to the track beam assembly module;

[0007] The slewing drive module is configured to connect to the chassis turntable base module;

[0008] The powertrain module is configured to connect to the chassis turntable base module;

[0009] A counterweight module is configured to be connected to the powertrain module;

[0010] The cab module is configured to connect to the chassis turntable base module;

[0011] The fuel tank module is configured to connect to the chassis turntable base module;

[0012] The boom assembly module is configured to connect to the chassis turntable base module;

[0013] The boom assembly module is configured to connect to the boom assembly module; and

[0014] The work implement module is configured to connect to the boom assembly module.

[0015] In some embodiments of the modular excavator, the weight of each assembly module is less than 2.8 tons.

[0016] In some embodiments of the modular excavator, at least two assembly modules are connected via a quick-connect structure, the quick-connect structure comprising:

[0017] A guiding and positioning structure includes two cooperating guide members respectively disposed on two connected assembly modules, the two guide members being configured to guide the two assembly modules to be connected to reach and be positioned in the assembly position; and

[0018] A locking structure is configured to lock the two assembly modules in the assembly position.

[0019] In some embodiments of the modular excavator, the two cooperating guide components of the guide positioning structure include a guide positioning plate and a guide positioning pin. The guide positioning plate has a guide opening and a positioning pin groove communicating with the guide opening. The guide positioning pin is configured to enter the positioning pin groove through the guide opening. When the two assembly modules are connected, the guide positioning pin engages with the positioning pin groove.

[0020] In some embodiments of the modular excavator,

[0021] The guiding and positioning structure includes at least two sets of guide members, with the two guide members in each set cooperating with each other.

[0022] The locking structure includes a limiting plate configured to connect two guides of the same set of guides to lock the relative positions of the two guides in at least one degree of freedom.

[0023] In some embodiments of the modular excavator, the guiding and positioning structure further includes a positioning plate and a mating plate respectively disposed on the two assembly modules and cooperating with each other. When the two assembly modules are connected, the positioning plate and the mating plate abut against each other to position the two assembly modules at the assembly position.

[0024] In some embodiments of the modular excavator, the locking structure includes two locking parts with locking pin holes respectively disposed in the two assembly modules and a locking pin shaft for engaging with the two locking pin holes.

[0025] In some embodiments of the modular excavator, the two locking parts of the locking structure include a support plate and a pin mounting plate. When the two assembly modules are connected, the locking pin engages with two locking pin holes on the support plate and the pin mounting plate.

[0026] In some embodiments of the modular excavator,

[0027] The track beam assembly module is connected to the chassis turntable base module via the quick-connect structure; and / or

[0028] The powertrain module is connected to the chassis turntable base module via the quick-connect structure; and / or

[0029] The cab module is connected to the chassis turntable base module via the quick-connect structure; and / or

[0030] The fuel tank module is connected to the chassis turntable base module via the quick-connect structure.

[0031] In some embodiments of the modular excavator,

[0032] At least two of the plurality of assembly modules include hydraulic lines, and the hydraulic lines of the at least two assembly modules are connected by quick-connect plugs; and / or

[0033] At least two of the plurality of assembly modules include electrical wiring, and the electrical wiring of the at least two assembly modules is connected by quick-connect plugs.

[0034] In some embodiments of the modular excavator, the chassis turntable base module includes a lower frame, a slewing bearing, a turntable body, a central slewing body, a boom cylinder, and a first hydraulic line. The slewing bearing, the turntable body, the central slewing body, the boom cylinder, and the first hydraulic line are mounted on the lower frame.

[0035] In some embodiments of the modular excavator, the modular excavator includes two track beam assembly modules respectively connected to the left and right sides of the chassis turntable base module, and two track modules respectively connected to the two track beam assembly modules.

[0036] In some embodiments of the modular excavator, the track beam assembly module includes a track longitudinal beam, a drive wheel, an idler wheel, a track roller, a track chain wheel, a travel drive mechanism, and a second hydraulic line. The drive wheel, the idler wheel, the track roller, the track chain wheel, the travel drive mechanism, and the second hydraulic line are mounted on the track longitudinal beam. The track longitudinal beam is connected to the lower frame of the chassis turntable base module via a quick-connect structure.

[0037] In some embodiments of the modular excavator, the chassis turntable base module includes a turntable body, on which a seat ring is provided, and the slewing drive module is positioned with the seat ring by a locating pin and connected by bolts.

[0038] In some embodiments of the modular excavator, the powertrain module includes 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 are mounted on the first bottom bracket, and the first bottom bracket is connected to the lower frame of the chassis turntable base module via a quick-connect structure.

[0039] In some embodiments of the modular excavator, the modular excavator includes at least two counterweight modules connected to the powertrain module.

[0040] In some embodiments of the modular excavator, the powertrain module is positioned with at least one of the counterweight modules by locating pins and connected by bolts.

[0041] In some embodiments of the modular excavator, the modular excavator includes two counterweight modules, the two counterweight modules being a lower counterweight module and an upper counterweight module, a guide post being provided between the connecting surfaces of the lower counterweight module and the upper counterweight module, and the lower counterweight module and the upper counterweight module being locked together by a locking part.

[0042] In some embodiments of the modular excavator, the locking part includes:

[0043] Chain;

[0044] A hook is provided on the lower counterweight module, and the first end of the chain is hooked onto the hook;

[0045] An adjusting plate, which is adjustablely locked onto the upper counterweight module, has a through hole through which the second end of the chain passes.

[0046] A stop, detachably fixed to the side of the adjusting plate away from the hook, is configured to partially cover the through hole to confine a portion of the chain link between the hook and the stop.

[0047] In some embodiments of the modular excavator, the adjusting plate includes a threaded hole, and the locking part further includes a locking screw that mates with the threaded hole. The adjusting plate adjusts its relative position to the upper counterweight module and locks itself onto the upper counterweight module via the locking screw.

[0048] In some embodiments of the modular excavator, the cab module includes a cab and a second bottom bracket supporting the cab, the second bottom bracket being connected to the turntable body of the chassis turntable base module via a quick-connect structure.

[0049] In some embodiments of the modular excavator, the fuel tank module includes a fuel tank and a third bottom bracket supporting the fuel tank, the third bottom bracket being connected to the turntable body of the chassis turntable base module via a quick-connect structure.

[0050] In some embodiments of the modular excavator, the boom assembly module includes a boom body, a stick cylinder, and a fourth hydraulic line. The stick cylinder and the fourth hydraulic line are mounted on the boom body. The rear end of the boom body is positioned with the front end of the turntable body of the chassis turntable base module through a positioning structure and is hinged by a pin.

[0051] In some embodiments of the modular excavator, the stick assembly module includes a stick body, a bucket cylinder, a first quick-change coupling part, and a fifth hydraulic line. The bucket cylinder, the first quick-change coupling part, and the fifth hydraulic line are mounted on the stick body. The rear end of the stick body and the front end of the boom body are positioned by a positioning structure and hinged by a pin. The work implement module includes an implement body and a second quick-change coupling part disposed on the implement body. The front end of the stick body is connected to the work implement module through the first quick-change coupling part and the second quick-change coupling part.

[0052] In some embodiments of the modular excavator,

[0053] The first quick-change device coupling part includes a first coupling body, a locking pin, a quick-change cylinder, a pin hook plate, and a stick connecting pin. The locking pin, the quick-change cylinder, and the pin hook plate are disposed on the first coupling body. The quick-change cylinder is drivenly connected to the locking pin to drive the locking pin to move relative to the first coupling body. The first coupling body is hinged to the stick body and the bucket cylinder respectively through two stick connecting pins. The second quick-change device coupling part includes a second coupling body, a locking bushing, a coupling body connecting pin, and a tool connecting pin. The locking bushing and the coupling body connecting pin are disposed on the second coupling body. The second coupling body is connected to the tool body through two tool connecting pins.

[0054] The first quick-change device coupling part and the second quick-change device coupling part are connected by the engagement of the pin hook plate with the coupling body connecting pin and the locking pin with the locking bushing. Based on the modular excavator provided in this disclosure, the excavator is rationally divided into multiple assembly modules, which facilitates the control of the weight of each assembly module, allows the transfer device to transport each assembly module of the modular excavator within its load-bearing capacity to the designated location, improves the safety of transporting each assembly module, reduces restrictions on transport vehicles, and facilitates rapid arrival at the work site, thereby ensuring the progress of the operation. For example, it can facilitate rapid arrival at the disaster relief and rescue site and the prompt implementation of disaster relief and rescue operations.

[0055] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0056] The accompanying drawings, which are included to provide a further understanding of this disclosure and form part of this application, illustrate exemplary embodiments of this disclosure and are used to explain this disclosure, but do not constitute an undue limitation of this disclosure. In the drawings:

[0057] Figure 1 This is a structural schematic diagram of a modular excavator and its assembly modules according to an embodiment of the present disclosure.

[0058] Figure 2 This is a flowchart illustrating the assembly steps of a modular excavator according to an embodiment of the present disclosure.

[0059] Figure 3 This is a schematic diagram of the modular excavator according to an embodiment of the present disclosure after each assembly step is completed.

[0060] Figure 4 This is a structural schematic diagram of the chassis turntable base module of a modular excavator according to an embodiment of the present disclosure.

[0061] Figure 5 This is a structural schematic diagram of the chassis turntable base module of a modular excavator according to an embodiment of the present disclosure.

[0062] Figure 6 This is a structural schematic diagram of the track beam assembly module of a modular excavator according to an embodiment of the present disclosure.

[0063] Figure 7 This is a partial structural diagram of the assembled lower frame of the chassis turntable base module and the track longitudinal beam of the track beam assembly module of the modular excavator according to an embodiment of the present disclosure.

[0064] Figure 8 This is a structural schematic diagram of the powertrain module of a modular excavator according to an embodiment of the present disclosure.

[0065] Figure 9 This is a partial structural diagram of the first bottom bracket of the powertrain module of a modular excavator according to an embodiment of the present disclosure.

[0066] Figure 10 This is a schematic diagram of the two counterweight modules in the assembly process according to an embodiment of the present disclosure.

[0067] Figure 11 This is a partial structural diagram of the assembled two counterweight modules according to an embodiment of the present disclosure.

[0068] Figure 12 This is a schematic diagram of the third bottom bracket of the fuel tank module of a modular excavator according to an embodiment of the present disclosure.

[0069] Figure 13 This is a schematic diagram of the structure of the lower frame of the chassis turntable base module and the third bottom bracket of the fuel tank module of the modular excavator according to an embodiment of the present disclosure.

[0070] Figure 14 This is a structural schematic diagram of the boom body of the boom assembly module of the modular excavator according to an embodiment of the present disclosure.

[0071] Figure 15 This is a structural schematic diagram of the assembly process of the stick assembly module and boom assembly module of the modular excavator according to an embodiment of the present disclosure.

[0072] Figure 16 for Figure 15 A partial structural diagram. Detailed Implementation

[0073] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0074] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this disclosure. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0075] In the description of this disclosure, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this disclosure.

[0076] In the description of this disclosure, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this disclosure and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this disclosure; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0077] In the following description, “front” refers to the front of the modular excavator, “rear” refers to the side opposite to “front”, and “left” and “right” refer to the left and right directions when facing forward.

[0078] like Figures 1 to 16 As shown, this disclosure provides a modular excavator, which includes multiple assembly modules that are detachably connected.

[0079] The assembly modules include: a chassis turntable base module M1; a track beam assembly module configured to connect to the chassis turntable base module M1; a track module configured to connect to the track beam assembly module; a slewing drive module M6 configured to connect to the chassis turntable base module M1; a powertrain module M7 configured to connect to the chassis turntable base module M1; a counterweight module configured to connect to the powertrain module M7; a cab module M10 configured to connect to the chassis turntable base module M1; a fuel tank module M11 configured to connect to the chassis turntable base module M1; a boom assembly module M12 configured to connect to the chassis turntable base module M1; a stick assembly module M13 configured to connect to the boom assembly module M12; and a work implement module M14 configured to connect to the stick assembly module M13.

[0080] The modular excavator of this disclosure is rationally divided into multiple assembly modules, which facilitates the control of the weight of each assembly module and the transport device to transport each assembly module of the modular excavator to the designated location within its load-bearing capacity. This improves the safety of transporting each assembly module and reduces restrictions on transport vehicles. For example, it is more suitable for safe transport by transport aircraft and facilitates rapid arrival at the work site, thereby ensuring the progress of the operation. For example, it can facilitate rapid arrival at the disaster relief and rescue site and the implementation of disaster relief and rescue operations as soon as possible.

[0081] In some embodiments of the modular excavator, the weight of each assembly module is less than 2.8 tons. By reasonably setting the weight of each assembly module and limiting the weight of each assembly module within a certain range, it is easier for the transfer device to transport each assembly module of the modular excavator to the designated location within its load-bearing capacity. This improves the safety of transporting each assembly module, reduces restrictions on transport vehicles, and reduces the possibility of delays in transporting the modular excavator to the designated location due to the lack of suitable transport vehicles.

[0082] In some embodiments of the modular excavator, at least two assembly modules are connected via a quick-connect structure, which includes a guiding and positioning structure and a locking structure. The guiding and positioning structure includes two cooperating guide members respectively disposed on the two connected assembly modules. The two guide members are configured to guide the two assembly modules to be connected to and position them in the assembly position. The locking structure is configured to lock the two assembly modules in the assembly position. By providing a quick-connect structure with a guiding and locking structure, the two assembly modules can quickly reach the assembly position and lock together through the guiding and positioning steps and the locking steps, thereby improving the assembly speed of the two assembly modules.

[0083] In some embodiments of the modular excavator, the guiding and positioning structure includes two cooperating guide components: a guide positioning plate and a guide positioning pin. The guide positioning plate has a guide opening and a positioning pin groove communicating with the guide opening. The guide positioning pin is configured to enter the positioning pin groove through the guide opening. When the two assembly modules are connected, the guide positioning pin engages with the positioning pin groove. This arrangement facilitates the guide positioning pin entering the positioning pin groove along the side wall of the guide opening after being placed in the guide opening, thereby enabling the two assembly modules to quickly reach the assembly position.

[0084] In some embodiments of the modular excavator, the guiding and positioning structure includes at least two sets of guide members, with the two guide members in each set cooperating with each other; the locking structure includes a limiting plate configured to connect two guide members of the same set of guide members to lock the relative position of the two guide members in at least one degree of freedom. By locking the relative position of the two guide members, in conjunction with the positioning function of at least two sets of guide members, the locking of the two assembly modules in the assembly position can be at least partially achieved, facilitating the rapid connection of the two assembly modules.

[0085] In some embodiments of the modular excavator, the guiding and positioning structure further includes a positioning plate and a mating plate respectively disposed on two assembly modules. When the two assembly modules are connected, the positioning plate and the mating plate abut against each other to position the two assembly modules in the assembly position. By setting the positioning plate and the mating plate, the two assembly modules can further quickly and accurately determine the assembly position, thus facilitating the rapid connection of the two assembly modules.

[0086] In some embodiments of the modular excavator, the locking structure includes two locking parts with locking pin holes respectively disposed on two assembly modules, and a locking pin shaft for engaging with the two self-locking pin holes. The engagement of the locking parts and the locking pin shaft facilitates quick connection after the two assembly modules are positioned.

[0087] In some embodiments of the modular excavator, the locking structure includes a support plate and a pin mounting plate. When the two assembly modules are connected, the locking pin engages with two locking pin holes on the support plate and the pin mounting plate.

[0088] In some embodiments of the modular excavator, the track beam assembly module is connected to the chassis turntable base module M1 via a quick-connect structure; and / or the powertrain module M7 is connected to the chassis turntable base module M1 via a quick-connect structure; and / or the cab module M10 is connected to the chassis turntable base module M1 via a quick-connect structure; and / or the fuel tank module M11 is connected to the chassis turntable base module M1 via a quick-connect structure. This arrangement facilitates rapid positioning and connection of the track beam assembly module and / or the powertrain module M7 and / or the cab module M10 and / or the fuel tank module M11 to the chassis turntable base module M1, thereby improving the overall assembly efficiency of the machine.

[0089] In some embodiments of the modular excavator, at least two of the multiple assembly modules include hydraulic lines, which are connected by quick-connect plugs; and / or at least two of the multiple assembly modules include electrical lines, which are connected by quick-connect plugs.

[0090] In some embodiments of the modular excavator, the modular excavator includes two track beam assembly modules M2 and M3 respectively connected to the left and right sides of the chassis turntable base module M1, and two track modules M4 and M5 respectively connected to the two track beam assembly modules M2 and M3. The modular excavator includes two track beam assembly modules and two track modules, which helps reduce the weight of each track beam assembly module and each track module, thereby facilitating the safe and timely transportation of the two track beam assembly modules and the two track modules. The two track beam assembly modules are, for example, a left track beam assembly module M2 and a right track beam assembly module M3, and the two track modules are, for example, a left track module M4 and a right track module M5.

[0091] The following combination Figures 1 to 16 A more detailed description of the modular excavator according to embodiments of the present invention will be provided.

[0092] The modular excavator comprises multiple detachably connected assembly modules. These modules include a chassis turntable base module M1, two track beam assembly modules (left track beam assembly module M2 and right track beam assembly module M3), two track modules (left track module M4 and right track module M5), a swing drive module M6, a powertrain module M7, two counterweight modules (lower counterweight module M8 and upper counterweight module M9), a cab module M10, a fuel tank module M11, a boom assembly module M12, a stick assembly module M13, and a work implement module M14.

[0093] like Figure 1As shown, in some embodiments of the modular excavator, the chassis turntable base module M1 includes a lower frame 1A, a slewing bearing 1B, a turntable body 1C, a central slewing body 1D, a boom cylinder 1E, and a first hydraulic line 1F. The slewing bearing 1B, turntable body 1C, central slewing body 1D, boom cylinder 1E, and first hydraulic line 1F are mounted on the lower frame 1A. The slewing bearing 1B includes a fixed portion and a rotating portion rotatable relative to the fixed portion. The fixed portion is mounted on the lower frame 1A, and the turntable body 1C is mounted on the rotating portion, thereby allowing the turntable body 1C to rotate relative to the lower frame 1A about a vertical axis of rotation. The central slewing body 1D connects the fixed portion of the first hydraulic line 1F, which is fixed relative to the lower frame 1A, and the movable portion, which is fixed relative to the turntable body 1C. Through the central slewing body 1D, the fixed portion and the movable portion are relatively movable while satisfying the required connection relationship.

[0094] like Figure 1 As shown, in some embodiments of the modular excavator, the left track beam assembly module M2 includes a track longitudinal beam 2A, a drive wheel 2B, an idler wheel 2C, a track roller 2D, a track chain wheel 2E, a travel drive mechanism 2F, and a second hydraulic line 2H. The drive wheel 2B, idler wheel 2C, track roller 2D, track chain wheel 2E, travel drive mechanism 2F, and second hydraulic line 2H are mounted on the track longitudinal beam 2A. The track longitudinal beam 2A is connected to the lower frame 1A of the chassis turntable base module M1 via a quick-connect structure. Thus, by achieving a quick connection between the track longitudinal beam 2A and the lower frame 1A, the mechanical connection between the left track beam assembly module M2 and the chassis turntable base module M1 can be achieved, which is beneficial to improving the assembly speed of the two. The structure of the right track beam assembly module M3 and its connection method with the chassis turntable base module M1 are the same as those of the left track beam assembly module M2, and will not be described again.

[0095] like Figure 1 As shown, in some embodiments of the modular excavator, the chassis turntable base module M1 includes a turntable body 1C, on which a raceway 1-7 is mounted. The slewing drive module M6 is positioned with the raceway 1-7 via locating pins and connected by bolts. This arrangement facilitates rapid assembly of the slewing drive module M6 with the chassis turntable base module M1. The slewing drive module M6 drives the turntable body 1C to rotate relative to the lower frame 1A, thereby causing the various assembly modules mounted on the turntable body 1C to rotate relative to the lower frame 1A and the assembly modules mounted on the lower frame 1A.

[0096] like Figure 1 , Figure 8 and Figure 9As shown, in some embodiments of the modular excavator, the powertrain module M7 includes an engine system 7A, a hood 7B, a first bottom bracket 7C, a hydraulic oil tank 7D, a hydraulic main valve 7E, a main pump 7F, and a third hydraulic line 7H. The engine system 7A, hood 7B, hydraulic oil tank 7D, hydraulic main valve 7E, main pump 7F, and third hydraulic line 7H are mounted on the first bottom bracket 7C. The first bottom bracket 7C is connected to the lower frame 1A of the chassis turntable base module M1 via a quick-connect structure. Therefore, by quickly connecting the first bottom bracket 7C to the lower frame 1A, the mechanical connection between the powertrain module M7 and the chassis turntable base module M1 can be achieved, which facilitates faster assembly.

[0097] like Figure 1 As shown, in some embodiments of the modular excavator, the modular excavator includes at least two counterweight modules M8 and M9 connected to the powertrain module M7. By providing at least two counterweight modules, the weight of each counterweight module is reduced, thereby facilitating the transportation of the counterweight modules. The two counterweight modules include, for example, a lower counterweight module M8 and an upper counterweight module M9 located above the lower counterweight module.

[0098] like Figure 1 As shown, in some embodiments of the modular excavator, the powertrain module M7 and at least one counterweight module M8 are positioned by locating pins and connected by bolts. This arrangement facilitates rapid assembly of the counterweight module and the counterweight assembly module.

[0099] like Figure 1 , Figure 10 and Figure 11 As shown, in some embodiments of the modular excavator, the modular excavator includes two counterweight modules M8 and M9. The two counterweight modules M8 and M9 include a lower counterweight module M8 and an upper counterweight module M9. A guide post 8-1 is provided between the connecting surfaces of the lower counterweight module M8 and the upper counterweight module M9, and the lower counterweight module M8 and the upper counterweight module M9 are locked together by a locking part 8-3.

[0100] like Figure 10 and Figure 11As shown, in some embodiments of the modular excavator, the locking part 8-3 includes a chain 8-3-1, a hook 8-3-2, an adjusting plate 8-3-3, and a stop 8-3-4. The hook 8-3-2 is disposed on the lower counterweight module M8, and the first end of the chain 8-3-1 is hooked onto the hook 8-3-2. The adjusting plate 8-3-3 is adjustablely locked onto the upper counterweight module M9. The adjusting plate 8-3-3 has a through hole 8-3-3A. The second end of the chain 8-3-1 passes through the through hole 8-3-3A. The stop 8-3-4 is detachably fixed to the side of the adjusting plate 8-3-3 away from the hook 8-3-2 and is configured to partially cover the through hole 8-3-3A to confine a portion of the chain 8-3-1 between the hook 8-3-2 and the stop 8-3-4.

[0101] like Figure 10 and Figure 11 As shown, in some embodiments of the modular excavator, the adjusting plate 8-3-3 includes a threaded hole, and the locking part 8-3 also includes a locking screw 8-3-6 that mates with the threaded hole. The adjusting plate 8-3-3 adjusts its relative position to the upper counterweight module M9 and locks itself onto the upper counterweight module M9 by means of the locking screw 8-3-6.

[0102] like Figure 10 and Figure 11 As shown, the locking component 8-3 is, for example, a bolt. The upper counterweight module M9 falls onto the lower counterweight module M8 through the guiding and positioning action of the guide post 8-1. The chain 8-3-1 passes through the upper counterweight module M9 and the lower counterweight module M8 from top to bottom. The lower end of the chain 8-3-1 is hooked onto the hook 8-3-2 fixed to the bottom of the lower counterweight module M8, and the upper end of the chain 8-3-1 is locked and fixed to the upper counterweight module M9. When the upper end of the chain 8-3-1 is locked and fixed to the upper counterweight module M9, the plate-shaped stop 8-3-4 is detachably fixed to the adjusting plate 8-3-3 by bolts 8-3-5. The chain 8-3-1 is locked in place by the adjusting plate 8-3-3 and the stop 8-3-4, restricting the chain movement. A groove can be provided on the stop 8-3-4, and the chain link abuts against the groove to prevent wear of the jammed chain link. The adjusting plate 8-3-3 and the locking screw 8-3-6 are connected by threads. Rotating several locking screws 8-3-6 respectively will drive the adjusting plate 8-3-3 to move upward, thereby tightening and locking the chain 8-3-1.

[0103] The connection method using the aforementioned locking part 8-3 to connect different counterweight modules helps avoid the use of oversized bolts, reduces assembly tools, and alleviates the intensity of field assembly operations. For example... Figure 1As shown, in some embodiments of the modular excavator, the cab module M10 includes a cab 10A and a second bottom bracket 10B supporting the cab 10A. The second bottom bracket 10B is connected to the turntable body 1C of the chassis turntable base module M1 via a quick-connect structure. Therefore, by quickly connecting the second bottom bracket 10B to the lower frame 1A, a mechanical connection between the cab module M10 and the chassis turntable base module M1 can be achieved, which facilitates faster assembly.

[0104] like Figure 1 As shown, in some embodiments of the modular excavator, the fuel tank module M11 includes a fuel tank 11A and a third bottom bracket 11B supporting the fuel tank 11A. The third bottom bracket 11B is connected to the turntable body 1C of the chassis turntable base module M1 via a quick-connect structure. By quickly connecting the third bottom bracket 11B to the lower chassis 1A, the mechanical connection between the fuel tank module M11 and the chassis turntable base module M1 can be achieved, which helps to improve the assembly speed of the two.

[0105] like Figure 1 As shown, in some embodiments of the modular excavator, the boom assembly module M12 includes a boom body 12A, a stick cylinder 12B, and a fourth hydraulic line 12C. The stick cylinder 12B and the fourth hydraulic line 12C are mounted on the boom body 12A. The rear end of the boom body 12A is positioned and hinged to the front end of the turntable body 1C of the chassis turntable base module M1 via a positioning structure and a pin. This arrangement allows for quick connection between the boom assembly module M12 and the turntable body 1C.

[0106] like Figure 1 , Figure 15 and Figure 16 As shown, in some embodiments of the modular excavator, the stick assembly module M13 includes a stick body 13A, a bucket cylinder 13B, a first quick-change coupling part 13C, and a fifth hydraulic line 13D. The bucket cylinder 13B, the first quick-change coupling part 13C, and the fifth hydraulic line 13D are mounted on the stick body 13A. The rear end of the stick body 13A is positioned and hinged to the front end of the boom body 12A by a positioning structure and a pin. The work implement module M14 includes a work implement body 14A and a second quick-change coupling part 14B disposed on the work implement body 14A. The front end of the stick body 13A is connected to the work implement module M14 through the first quick-change coupling part 13C and the second quick-change coupling part 14B. The work implement body 14A of the work implement module M14 includes, for example, a bucket. This arrangement facilitates the rapid assembly of the work implement module M14 and the stick assembly module M13.

[0107] like Figure 15 and Figure 16As shown, in some embodiments, the first quick-change device coupling part 13C includes a first coupling body 13-5, a locking pin 13-1, a quick-change cylinder 13-2, a pin hook plate 13-3, and a stick connecting pin 13-4. The locking pin 13-1, the quick-change cylinder 13-2, and the pin hook plate 13-3 are disposed on the first coupling body 13-5. The quick-change cylinder 13-2 is drivenly connected to the locking pin 13-1 to drive the locking pin 13-1 to move relative to the first coupling body 13-5. The first coupling body 13-5 is hinged to the stick body 13A and the bucket cylinder 13B respectively through two stick connecting pins 13-4. The second quick-change device coupling part 14B includes a second coupling body 14-4, a locking bushing 14-1, a coupling body connecting pin 14-2, and a tool connecting pin 14-3. Locking bushing 14-1 and coupling body connecting pin 14-2 are mounted on the second coupling body 14-4. The second coupling body 14-4 is connected to the tool body 14A via two tool connecting pins 14-3.

[0108] The first quick-change device coupling part 13C and the second quick-change device coupling part 14B are connected by the hook engagement of the pin hook plate 13-3 and the coupling body connecting pin 14-2, and the insertion engagement of the locking pin 13-1 and the locking bushing 14-1.

[0109] like Figure 15 and Figure 16 As shown, when the boom assembly module M13 and the work implement module M14 are assembled, the pin hook plate 13-3 is hooked onto the coupling body connecting pin 14-2. The quick-change cylinder 13-2 retracts to retract the locking pin 13-1, and the bucket cylinder 13B extends to rotate the first quick-change device coupling part 13C and the second quick-change device coupling part 14B counterclockwise around the coupling body connecting pin 14-2. After the locking pin 13-1 falls to the center coaxial with the locking sleeve 14-1, the quick-change cylinder 13-2 extends to insert the locking pin 13-1 into the locking sleeve 14-1, completing the locking connection of the first coupling body 13-5 and the second coupling body 14-4, and thus completing the connection of the first quick-change device coupling part 13C and the second quick-change device coupling part 14B, thereby realizing the assembly of the boom assembly module M13 and the work implement module M14.

[0110] The following description uses the first quick-connect structure connecting the track longitudinal beam 2A of the left track beam assembly module M2 and the lower frame 1A of the chassis turntable base module M1 as an example to illustrate one embodiment of the quick-connect structure of this disclosure. The quick-connect structure connecting the track longitudinal beam of the right track beam assembly module and the lower frame 1A is the same as the first quick-connect structure and will not be described again.

[0111] like Figure 4 and Figure 7As shown, the first quick-connect structure includes a guiding and positioning structure and a locking structure. In the first quick-connect structure, the guiding and positioning structure includes a first guiding and positioning plate 1-1, a first guiding and positioning pin 2-1, a first positioning plate 1-2, and a first mating plate 2-2. The first guiding and positioning plate 1-1 and the first guiding and positioning pin 2-1 constitute two mutually cooperating guiding components of the guiding and positioning structure of the first quick-connect structure, and the first positioning plate 1-2 and the first mating plate 2-2 constitute two mutually cooperating positioning components of the guiding and positioning structure of the first quick-connect structure. In the first quick-connect structure, the locking structure includes a first support plate 1-3, a first pin mounting plate 2-3, and a first locking pin 2-5. The first support plate 1-3 and the first pin mounting plate 2-3 constitute two locking parts with locking pin holes in the locking structure.

[0112] A first guide positioning plate 1-1, a first positioning plate 1-2, and a first support plate 1-3 are disposed on the side of the lower frame 1A. The first guide positioning plate 1-1 has a first guide opening 1-1A located at the top and a first positioning pin groove 1-1B located at the bottom of the first guide opening 1-1A and communicating with it. The first support plate 1-3 is located below the first guide positioning plate 1-1. The first support plate 1-3 has a first locking pin hole parallel to the axis of the first positioning pin groove 1-1B. The first positioning plate 1-2 is located between the first guide positioning plate 1-1 and the first support plate 1-3.

[0113] A first guide positioning pin 2-1, a first mating plate 2-2, and a first pin mounting plate 2-3 are disposed on the side of the track longitudinal beam 2A. The first guide positioning pin 2-1 is configured to enter the first positioning pin groove 1-1B through the first guide opening 1-1A. The first pin mounting plate 2-3 is located below the first guide positioning pin 2-1 and is configured to have a second locking pin hole parallel to the axis of the first guide positioning pin 2-1. The first mating plate 2-2 is located between the first guide positioning pin 2-1 and the first pin mounting plate 2-3. When the chassis turntable base module M1 and the track beam assembly modules M2 and M3 are connected, the first guide positioning pin 2-1 mates with the first positioning pin groove 1-1B, the first mating plate 2-2 abuts against the first positioning plate 1-2, the first locking pin hole and the second locking pin hole are coaxial, and the first locking pin 2-5 mates with both the first locking pin hole and the second locking pin hole.

[0114] The first bottom bracket 7C of the powertrain module M7 is connected to the lower frame 1A of the chassis turntable base module M1 through a second quick-connect structure, which is similar to the first quick-connect structure.

[0115] like Figure 4 , Figure 7 and Figure 9As shown, the second quick-connect structure includes a guiding and positioning structure and a locking structure. In the second quick-connect structure, the guiding and positioning structure includes a second guiding and positioning plate 1-4, a second guiding and positioning pin 7-1, a second positioning plate 1-5, and a second mating plate 7-2. The second guiding and positioning plate 1-4 and the second guiding and positioning pin 7-1 constitute two mutually cooperating guide components of the guiding and positioning structure of the second quick-connect structure, and the second positioning plate 1-5 and the second mating plate 7-2 constitute two mutually cooperating positioning components of the guiding and positioning structure of the second quick-connect structure. In the second quick-connect structure, the locking structure includes a second support plate 1-6, a second pin mounting plate 7-3, and a second locking pin 7-5. The second support plate 7-3 and the second pin mounting plate 7-3 constitute two locking parts with locking pin holes in the locking structure.

[0116] The second guide positioning plate 1-4, the mating plate 1-5, and the second support plate 1-6 are disposed on the upper rear side of the lower frame 1A. The second guide positioning plate 1-4 has a second guide opening 1-4A located at the top and a second positioning pin groove 1-4B located at the bottom of the second guide opening 1-4A and communicating with the second guide opening 1-4A. The second support plate 1-6 is located below the second guide positioning plate 1-4, and the second support plate 1-6 is provided with a third locking pin hole parallel to the axis of the second positioning pin groove 1-4B. The mating plate 1-5 is located between the second guide positioning plate 1-4 and the second support plate 1-6.

[0117] The second guide positioning pin 7-1, the second mating plate 7-2, and the second pin mounting plate 7-3 are disposed on the side of the first bottom bracket 7C of the powertrain module M7. The second guide positioning pin 7-1 is configured to enter the second positioning pin groove 1-4B through the second guide opening 1-4A. The second pin mounting plate 7-3 is located below the second guide positioning pin 7-1 and is configured to have a fourth locking pin hole parallel to the axis of the second guide positioning pin 7-1. The second mating plate 7-2 is located between the second guide positioning pin 7-1 and the second pin mounting plate 7-3. When the chassis turntable base module M1 and the powertrain module M7 are connected, the second guide positioning pin 7-1 mates with the second positioning pin groove 1-4B, the second mating plate 7-2 abuts against the mating plate 1-5, the third locking pin hole and the fourth locking pin hole are coaxial, and the second locking pin 7-5 mates with the third locking pin hole and the fourth locking pin hole.

[0118] The following will combine Figures 1 to 16 This describes the assembly process of the modular excavator in this embodiment. Among other things, Figure 2 This is a flowchart illustrating the assembly steps of a modular excavator. Figure 2 In the diagram, A and B represent two assembly processes that can be performed in parallel. Figure 2The numbers in the diagram represent assembly step numbers. Each step number corresponds to an assembly module with a corresponding module number. For example, step number 3 represents the assembly of the right track beam assembly module M3. Figure 3 This is a structural diagram of a modular excavator after each assembly step is completed.

[0119] The modular excavator assembly module adopts an asynchronous parallel collaborative operation method. Lifting equipment, assembly personnel, and tooling are provided on the designated site. The assembly is carried out from bottom to top according to the modular excavator assembly module assembly sequence process, which is mainly divided into three processes: chassis assembly, upper vehicle assembly, and working device assembly.

[0120] 1. Chassis assembly

[0121] The chassis turntable base module M1 is lifted from the bottom surface using an adjustable height bracket device, and then fixed in position after being raised a certain distance from the ground.

[0122] The left track beam assembly module M2 and the right track beam assembly module M3 are simultaneously lifted and installed from both the left and right sides, respectively. The two track beam assembly modules M2 and M3 are then mounted on the lower frame 1A of the chassis turntable foundation module M1. The following description only focuses on the installation of the left track beam assembly module M2; the installation process for the right track beam assembly module M3 is the same as that for the left track beam assembly module M2.

[0123] Lift the left track beam assembly module M2 and place the first guide positioning pin 2-1 at the upper end of the track beam assembly module M2 above the first guide opening 1-1A of the first guide positioning plate 1-1 at the upper left side of the chassis turntable base module M1. Loosen the lifting ropes to allow the assembly module to hang freely under gravity, and slide the first guide positioning pin 2-1 along the guide surface of the first guide opening 10-1A into the arc-shaped first positioning pin groove 1-1B at the bottom of the first guide positioning plate 1-1. Furthermore, the first mating plate 2-2 on the side of the left track beam assembly module M2 abuts and fits against the first positioning plate 1-2 at the lower end of the side of the chassis turntable base module M1. Simultaneously, the second locking pin hole of the first pin mounting plate 2-3 at the lower end of the side of the left track beam assembly module M2 coincides with the axis of the first locking pin hole of the first support plate 1-3 at the lower end of the side of the lower frame 1A of the chassis turntable base module M1. Inserting the first locking pin 2-5 allows for a quick mechanical connection between the left track beam assembly module M2 and the chassis turntable base module M1. To prevent the first locking pin 2-5 from dislodging from its corresponding locking pin hole, the locking mechanism may also include a pin limiting stop 2-4, which is fixed to the outside of the first locking pin 2-5 by bolts. Then, the first hydraulic line 1F of the chassis turntable base module M1 and the second hydraulic line 2H of the left track beam assembly module M2 are quickly connected using a quick-connect coupling.

[0124] Lift one end of the left track module M4 and the right track module M5 simultaneously from the left and right sides respectively, and wrap them around the left track beam assembly module M2 and the right track beam assembly module M3. Insert track chain pins and cotter pins at the joints at both ends of the track chain. Finally, inject grease into the tensioning device to tension the track, thus completing the assembly of the left track module M4 and the right track module M5.

[0125] Adjust the height of the bracket device to lower the chassis turntable base module M1 until the two track modules M4 and M5 are on the ground for support.

[0126] The rotary drive module M6 is lifted separately and placed onto the seat rings 1-7 of the turntable base module M1. After quick positioning using locating pins, the rotary drive module M6 is fixed to the seat rings 17-7 using bolts. The hydraulic lines of the rotary drive module M6 are quickly connected to the hydraulic lines of the assembled module using quick-connect couplings.

[0127] 2. Assembly on the vehicle

[0128] Lift the powertrain module M7 in a coordinated manner, placing the second guide positioning pin 7-1 at the upper end of the powertrain module M7 above the second guide opening 1-4A at the upper rear side of the chassis turntable base module M1. Loosen the lifting ropes, allowing the powertrain module M7 to hang freely under gravity, and slide the second guide positioning pin 7-1 along the guide surface of the second guide opening 1-4A into the arc-shaped second positioning pin groove 1-4B at the bottom. After the second mating plate 7-2 on the front side of the powertrain module M7 abuts and fits against the second positioning plate 1-5 at the upper rear side of the chassis turntable base module M1, the fourth locking pin hole at the lower front side of the powertrain module M7 coincides with the axis of the third locking pin hole at the lower rear side of the chassis turntable base module M1. Insert the second locking pin 7-5 and fix the second pin limit stop 7-4. Quickly connect the third hydraulic line 7H of the powertrain module M7 to the hydraulic lines of other assembled modules using a quick-connect coupling.

[0129] The counterweight assembly module M8 is lifted and placed onto the rear longitudinal beam of the powertrain module M7, where it is quickly positioned using locating pins and then secured with bolts.

[0130] The upper counterweight assembly module M9 is lifted and moved above the lower counterweight assembly module M8, aligning the two positioning holes of the upper counterweight assembly module M9 with the centers of the two positioning pins of the lower counterweight assembly module M8. The module is then lowered so that the bottom surface of the upper counterweight assembly module M8 is in contact with the top surface of the lower counterweight assembly module M8, and then fixed with bolts.

[0131] The cab module M10 and fuel tank module M11 are assembled simultaneously on the left and right sides respectively. The bottom brackets of both modules use the same quick-connect structure to connect to the turntable body 1C. The assembly method and steps are explained using only the assembly of the fuel tank module M11 with the turntable body 1C as an example. Figure 12 and Figure 13 As shown, the third quick-connect structure connecting the oil tank module M11 and the turntable body 1C includes a guide positioning structure and a locking structure.

[0132] The guiding and positioning structure includes two sets of guide members. Each set of guide members includes two cooperating guide members respectively disposed on the two connected assembly modules. The two guide members are configured to guide the two assembly modules to be connected to reach and be positioned in the assembly position.

[0133] The guiding and positioning structure consists of two cooperating guide components: a guide positioning plate and a guide positioning pin. The guide positioning plate has a guide opening and a positioning pin groove communicating with the guide opening. The guide positioning pin is configured to enter the positioning pin groove through the guide opening. When the two assembly modules are connected, the guide positioning pin engages with the positioning pin groove. Figure 13 and Figure 14 As shown, in the third quick-connect structure, the first set of guide members includes the hinge shaft 11-2 of the positioning shaft assembly 11-3 disposed on the third bottom bracket 11B of the fuel tank module M11, and the rear mounting seat 1-8 with a guide opening and a positioning pin groove disposed on the turntable body 1C. The second set of guide members includes the front positioning plate 11-4 with a guide opening and a positioning pin groove disposed on the third bottom bracket 11B of the fuel tank module M11, and the connecting shaft of the front mounting seat 1-9 disposed on the turntable body 1C.

[0134] The locking structure is configured to lock the two assembly modules in the assembly position. The locking structure includes a limiting plate 11-5, which is configured to connect the front positioning plate 11-4 and the front mounting base 1-9 via a connecting shaft to lock the relative position of the two guides in at least one degree of freedom.

[0135] When installing the third bottom bracket 11B of the oil tank module M11 with the turntable body 1C, firstly, the hinge shaft 11-2 of the positioning shaft assembly 11-3 slides into the positioning pin groove of the rear mounting seat 1-8 through the guide opening of the rear mounting seat 1-8, allowing the hinge shaft to rotate around the rear mounting seat 1-8. Then, the third bottom bracket 11B is lowered, allowing the connecting shaft of the front mounting seat 1-9 to enter the positioning pin groove of the front positioning plate 11-4 through the guide opening of the front positioning plate 11-4. The connecting shaft is rotated using the limiting plate 11-5, and the limiting plate 11-5 is fixed to the front positioning plate 11-4 to restrict the rotation of the connecting shaft, completing the assembly. The hydraulic lines and electrical wiring of the assembled modules are quickly connected using quick-connect couplings.

[0136] 3. Assembly of working device

[0137] The lifting points of the boom assembly module M12 are coordinated to lift the front and rear lifting points, so that the guide positioning pin 12-2, which is mounted on the guide positioning pin seat 12-3 near the rear hinge point of the boom assembly module M12, is referenced. Figure 14 Above the guide opening of the guide positioning plate 1-10 near the front hinge point hole of the frame turntable base module M1. Loosen the suspension rope, allowing the boom assembly module M12 to slide along the guide surface of the guide opening under gravity into the positioning pin groove at the bottom of the guide opening. Adjust the height of the front suspension rope so that the rear hinge point hole rotates about the axis of the guide positioning pin 12-2 and coincides with the axis of the front hinge point hole on the turntable body 1C. Insert the boom pin and secure it with the pin limit stop. Adjust the length of the boom cylinder 1E and hinge it to the boom body 1A with the pin. The guide positioning plate 1-10 and the guide positioning pin 12-2 constitute the guide structure when the boom assembly module M12 is connected to the frame turntable base module M1.

[0138] The installation methods for boom assembly module M13 and boom assembly module M12 are basically the same as those for boom assembly module M12 and chassis turntable base module M1, and will not be repeated here. The hydraulic lines and electrical wiring of the assembled modules are quickly connected via quick-connect couplings.

[0139] Start the excavator, operate the boom body 12A and stick body 13A, and connect the stick assembly module M13 and the work implement module M14 through the quick-change device including the first quick-change device coupling part 13C and the second quick-change device coupling part 14B. Complete the modular excavator assembly.

[0140] As can be seen from the above description, the modular excavator of this disclosure embodiment has at least one of the following advantages:

[0141] Multiple assembly modules are independent of each other, and each assembly module has a corresponding installation structure and lifting points, which is conducive to meeting the lifting capacity range of transportation equipment such as helicopters, thus facilitating rapid transfer. For example, each assembly module can be transported to the rescue site by helicopter, complete the rapid on-site assembly, and quickly put into disposal and construction operations. This solves the problem that large rescue equipment cannot arrive in time at disaster disposal sites that require rapid operation, such as landslide dammed lakes.

[0142] Modular excavators feature rapid modular disassembly and assembly. Each assembly module can be marked with an assembly serial number. Some modules utilize a guiding and positioning mechanism including guide openings, locating pin slots, and guide locating pins, as well as a locking mechanism including locking pins and pin limit stops for quick connection. Hydraulic and electrical lines employ quick-connect couplings for rapid assembly and disassembly, effectively reducing the difficulty of field assembly, improving assembly efficiency, and shortening assembly time. This allows modular excavators to be deployed to rescue operations more quickly, significantly reducing losses caused by disasters. Equipped with a first quick-change device coupling unit for working tools, it can quickly assemble and change multiple working tools, making it multi-functional and improving the diversity and efficiency of rescue operations.

[0143] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and not to limit them; although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this disclosure or equivalent substitutions can be made to some technical features, all of which should be covered within the scope of the technical solutions claimed in this disclosure.

Claims

1. A modular excavator, characterized in that, It includes a plurality of assembly modules that are detachably connected, the plurality of assembly modules comprising: Chassis turntable base module (M1); Track beam assembly modules (M2, M3) are configured to connect to the chassis turntable base module (M1); Track modules (M4, M5) are configured to connect to the track beam assembly modules (M2, M3); The slewing drive module (M6) is configured to connect to the chassis turntable base module (M1); The powertrain module (M7) is configured to connect to the chassis turntable base module (M1); The counterweight modules (M8, M9) are configured to be connected to the powertrain module (M7); The cab module (M10) is configured to connect to the chassis turntable base module (M1); The fuel tank module (M11) is configured to connect to the chassis turntable base module (M1); The boom assembly module (M12) is configured to connect to the chassis turntable base module (M1); The boom assembly module (M13) is configured to connect to the boom assembly module (M12); and The work implement module (M14) is configured to connect to the boom assembly module (M13); At least two assembly modules are connected via a quick-connect structure, the quick-connect structure comprising: A guiding and positioning structure includes two cooperating guide members respectively disposed on two connected assembly modules, and a cooperating positioning plate and a mating plate respectively disposed on the two assembly modules. The two guide members are configured to guide the two assembly modules to be connected to reach and be positioned in the assembly position. The two cooperating guide members of the guiding and positioning structure include a guide positioning plate and a guide positioning pin. The guide positioning plate has a guide opening and a positioning pin groove communicating with the guide opening. The guide positioning pin is configured to enter the positioning pin groove through the guide opening. When the two assembly modules are connected, the guide positioning pin engages with the positioning pin groove, and the positioning plate and the mating plate abut against each other to position the two assembly modules in the assembly position. A locking structure is configured to lock the two assembly modules in the assembly position.

2. The modular excavator according to claim 1, characterized in that, Each of the assembled modules weighs less than 2.8 tons.

3. The modular excavator according to claim 1, characterized in that, The guiding and positioning structure includes at least two sets of guide members, with the two guide members in each set cooperating with each other. The locking structure includes a limiting plate configured to connect two guides of the same set of guides to lock the relative positions of the two guides in at least one degree of freedom.

4. The modular excavator according to claim 1, characterized in that, The locking structure includes two locking parts with locking pin holes respectively disposed in the two assembly modules, and a locking pin shaft for engaging with the two locking pin holes.

5. The modular excavator according to claim 4, characterized in that, The locking structure has two locking parts, including a support plate and a pin mounting plate. When the two assembly modules are connected, the locking pin engages with two locking pin holes on the support plate and the pin mounting plate.

6. The modular excavator according to claim 1, characterized in that, The track beam assembly modules (M2, M3) and the chassis turntable base module (M1) are connected via the quick-connect structure; and / or The powertrain module (M7) and the chassis turntable base module (M1) are connected via the quick-connect structure; and / or The cab module (M10) and the chassis turntable base module (M1) are connected via the quick-connect structure; and / or The fuel tank module (M11) and the chassis turntable base module (M1) are connected by the quick-connect structure.

7. The modular excavator according to any one of claims 1 to 6, characterized in that, At least two of the plurality of assembly modules include hydraulic lines, and the hydraulic lines of the at least two assembly modules are connected by quick-connect plugs; and / or At least two of the plurality of assembly modules include electrical wiring, and the electrical wiring of the at least two assembly modules is connected by quick-connect plugs.

8. The modular excavator according to any one of claims 1 to 6, characterized in that, The chassis turntable base module (M1) includes a lower frame (1A), a slewing bearing (1B), a turntable body (1C), a central slewing body (1D), a boom cylinder (1E), and a first hydraulic line (1F). The slewing bearing (1B), the turntable body (1C), the central slewing body (1D), the boom cylinder (1E), and the first hydraulic line (1F) are mounted on the lower frame (1A).

9. The modular excavator according to any one of claims 1 to 6, characterized in that, The modular excavator includes two track beam assembly modules (M2, M3) respectively connected to the left and right sides of the chassis turntable base module (M1), and two track modules (M4, M5) respectively connected to the two track beam assembly modules (M2, M3).

10. The modular excavator according to any one of claims 1 to 6, characterized in that, The track beam assembly module (M2, M3) includes a track longitudinal beam (2A), a drive wheel (2B), a guide wheel (2C), a track roller (2D), a track chain wheel (2E), a travel drive mechanism (2F), and a second hydraulic line (2H). The drive wheel (2B), the guide wheel (2C), the track roller (2D), the track chain wheel (2E), the travel drive mechanism (2F), and the second hydraulic line (2H) are mounted on the track longitudinal beam (2A). The track longitudinal beam (2A) is connected to the lower frame (1A) of the chassis turntable base module (M1) via a quick-connect structure.

11. The modular excavator according to any one of claims 1 to 6, characterized in that, The chassis turntable base module (M1) includes a turntable body (1C), on which a seat ring (1-7) is provided. The rotary drive module (M6) is positioned with the seat ring (1-7) by a positioning pin and connected by bolts.

12. The modular excavator according to any one of claims 1 to 6, characterized in that, The powertrain module (M7) includes an engine system (7A), an engine hood (7B), a first bottom bracket (7C), a hydraulic tank (7D), a hydraulic main valve (7E), a main pump (7F), and a third hydraulic line (7H). The engine system (7A), the engine hood (7B), the hydraulic tank (7D), the hydraulic main valve (7E), the main pump (7F), and the third hydraulic line (7H) are mounted on the first bottom bracket (7C). The first bottom bracket (7C) is connected to the lower frame (1A) of the chassis turntable base module (M1) via a quick-connect structure.

13. The modular excavator according to any one of claims 1 to 6, characterized in that, The modular excavator includes at least two counterweight modules (M8, M9) connected to the powertrain module (M7).

14. The modular excavator according to claim 13, characterized in that, The powertrain module (M7) and at least one of the counterweight modules (M8) are positioned by locating pins and connected by bolts.

15. The modular excavator according to any one of claims 1 to 6, characterized in that, The modular excavator includes two counterweight modules (M8, M9). The two counterweight modules (M8) include a lower counterweight module (M8) and an upper counterweight module (M9). A guide post (8-1) is provided between the connecting surfaces of the lower counterweight module (M8) and the upper counterweight module (M9). The lower counterweight module (M8) and the upper counterweight module (M9) are locked together by a locking part (8-3).

16. The modular excavator according to claim 15, characterized in that, The locking part (8-3) includes: Chain (8-3-1); The hook (8-3-2) is set on the lower counterweight module (M8), and the first end of the chain (8-3-1) is hooked on the hook (8-3-2); The adjusting plate (8-3-3), which is adjustablely locked onto the upper counterweight module (M9), has a through hole (8-3-3A) through which the second end of the chain (8-3-1) passes. The stop (8-3-4), detachably fixed to the side of the adjusting plate (8-3-3) away from the hook (8-3-2), is configured to partially cover the through hole (8-3-3A) to confine a portion of the chain (8-3-1) between the hook (8-3-2) and the stop (8-3-4).

17. The modular excavator according to claim 16, characterized in that, The adjusting plate (8-3-3) includes a threaded hole, and the locking part (8-3) also includes a locking screw (8-3-6) that cooperates with the threaded hole. The adjusting plate (8-3-3) adjusts its relative position with the upper counterweight module (M9) and locks itself on the upper counterweight module (M9) through the locking screw (8-3-6).

18. The modular excavator according to any one of claims 1 to 6, characterized in that, The cab module (M10) includes a cab (10A) and a second bottom bracket (10B) supporting the cab (10A). The second bottom bracket (10B) is connected to the turntable body (1C) of the chassis turntable base module (M1) via a quick-connect structure.

19. The modular excavator according to any one of claims 1 to 6, characterized in that, The fuel tank module (M11) includes a fuel tank (11A) and a third bottom bracket (11B) supporting the fuel tank (11A). The third bottom bracket (11B) is connected to the turntable body (1C) of the chassis turntable base module (M1) via a quick-connect structure.

20. The modular excavator according to any one of claims 1 to 6, characterized in that, The boom assembly module (M12) includes a boom body (12A), a stick cylinder (12B), and a fourth hydraulic line (12C). The stick cylinder (12B) and the fourth hydraulic line (12C) are mounted on the boom body (12A). The rear end of the boom body (12A) is positioned with the front end of the turntable body (1C) of the chassis turntable base module (M1) through a positioning structure and is hinged by a pin.

21. The modular excavator according to claim 20, characterized in that, The stick assembly module (M13) includes a stick body (13A), a bucket cylinder (13B), a first quick-change device coupling part (13C), and a fifth hydraulic line (13D). The bucket cylinder (13B), the first quick-change device coupling part (13C), and the fifth hydraulic line (13D) are mounted on the stick body (13A). The rear end of the stick body (13A) is positioned with the front end of the boom body (12A) through a positioning structure and is hinged by a pin. The work implement module (M14) includes an implement body (14A) and a second quick-change device coupling part (14B) disposed on the implement body (14A). The front end of the stick body (13A) is connected to the work implement module (M14) through the first quick-change device coupling part (13C) and the second quick-change device coupling part (14B).

22. The modular excavator according to claim 21, characterized in that, The first quick-change device coupling part (13C) includes a first coupling body (13-5), a locking pin (13-1), a quick-change cylinder (13-2), a pin hook plate (13-3), and a stick connecting pin (13-4). The locking pin (13-1), the quick-change cylinder (13-2), and the pin hook plate (13-3) are disposed on the first coupling body (13-5). The quick-change cylinder (13-2) is drivenly connected to the locking pin (13-1) to drive the locking pin (13-1) to move relative to the first coupling body (13-5). The first coupling body (13-5) The second quick-change device coupling part (14B) is hinged to the stick body (13A) and the bucket cylinder (13B) respectively through two stick connecting pins (13-4); the second quick-change device coupling part (14B) includes a second coupling body (14-4), a locking bushing (14-1), a coupling body connecting pin (14-2) and a tool connecting pin (14-3). The locking bushing (14-1) and the coupling body connecting pin (14-2) are disposed on the second coupling body (14-4). The second coupling body (14-4) is connected to the tool body (14A) through two tool connecting pins (14-3). The first quick-change device coupling part (13C) and the second quick-change device coupling part (14B) are connected by the hook plate (13-3) and the coupling body connecting pin (14-2) and the locking pin (13-1) and the locking bushing (14-1).

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