DE112021003666T5 - Modular compact construction machine - Google Patents

Abstract

A modular compact construction machine is proposed, which is manufactured separately as a main body module, travel system module and add-on modules; while the modules can be easily integrated through the use of standard interfaces that allow users to easily disassemble and assemble each module to ensure portability in a small space.

Description

scope of the invention

The present invention relates to the modular compact construction machine that is easy to disassemble and assemble, and more particularly, is made in a modular architecture that is easy to disassemble and assemble to ensure portability, and which can use an attachment module with various common work tools depending on the purpose the construction machine.

Description of the prior art

1 Fig. 1 shows the conventional compact construction machines that can apply the present invention, a modular product architecture. According to statistics, 1.1 million units of construction machinery were sold worldwide in 2018, 45% of which were the five small construction machines (mini excavators; aerial work platforms; backhoe loaders; skid steer loaders; wheel loaders) sold in 1 , about 50 million units. In addition to the above five products, a forklift is also in 1 , because the modular concept can be transferred to industrial trucks.

There are various miniaturizations of compact construction machines. As in the compact multi-purpose unmanned excavator disclosed in Patent Document 1 (Korean Patent Publication No. 10-2014-0029672 ) is disclosed, however, there are some limits to miniaturization of construction machinery to ensure desired functions and performance.

In recent years, as the number of interior remodeling works using power tools increases with the increase of old buildings; accordingly, the use of small construction machines is increasing. Also, in the case of a high-rise building, an elevator can be used to go to the construction sites, but the conventional excavators are too big and heavy to go by an elevator. You have to climb stairs or use a crane.

To work on a high-rise construction site, it is necessary to transport small construction machines with an elevator. In order to move the construction machine in an elevator, it is necessary to overcome the restrictions on the length and weight of the construction machine. (Example: 11-person elevator: weight 750 kg, total length: 1350 mm)

SUMMARY OF THE INVENTION

The first technical goal is to provide a modular, compact product architecture with excellent disassembly and assembly capabilities that can facilitate this process. For this purpose, the main body module, the driving system module and the add-on module are each designed in a separate module with standard interfaces, so that they can be easily disassembled and assembled.

For convenience, the main body module and the travel system module are relatively slidable in the front and rear directions of the construction machine even if they are not completely disassembled, so that the front and rear length of the construction machine can be adjusted as needed. Providing this sliding mechanism is the second technical goal.

The third technical goal is to provide a modular product platform that can combine various required attachment modules with a main body module in a workplace where various types of construction machinery are required. In other words, it is possible to reduce the overall construction machine cost by replacing and using only the attachment modules suitable for the applications.

In addition, the problem to be solved by the present invention is not limited to the above-mentioned technical object. Other technical problems not mentioned here will be clearly understood by those skilled in the art from the description below.

In order to achieve the above object, according to an embodiment of the present invention, a modular compact construction machine is composed of a main body module, a traveling system module, and an attachment module. In order to ensure transportability in a small space, each module is Standard interfaces combined, allowing users to easily disassemble and assemble the product.

In the above embodiment, the standard interfaces are bolt-nut connections with a counterplate as the mechanical interface; Quick couplings as a hydraulic interface; and electrical connectors of wire harnesses as an electrical interface.

Also, in the above embodiment, the main body module has an electric power and hydraulic system including a battery, a charger, an electronically controlled hydraulic valve, a pump, and an electric motor. The traveling system module fixed on both sides of a main body module is either a traveling system or a wheel system.

In addition, in the above embodiment, the traveling system module is a caterpillar-type system module that is detachably attached to the left and right sides of the main body module, thereby ensuring rigidity in the vertical direction and in the front and back direction of the compact construction machine. To do this, 1) a rectangular cross-section mounting bar is welded in the front and rear directions on both sides of the main body module, 2) an L-shaped cross-section mounting bar is welded in the inner side of the crawler frame of the traveling system module, and 3) the mounting bar of the Main body is installed on the L-shaped mounting bar of the traveling system and connected with 3 or more bolts at the accessible places from the outside of the crawler frame; at the rear of the compact construction machine, the crawler frame is formed to extend backward and upward, and the crawler frame is fixed to the side surface of the main body module with a bolt; At the front of the compact construction machinery, a spacer nut is welded to the front and bottom of the crawler frame, a slot is formed in the front and bottom part of the main body module, and the crawler frame is fixed to the main body with a hex bolt from the inside of the main body module.

In addition, in the above embodiment, in order to prevent the crawler from opening, a pull rod for connecting the front and/or rear lower ends of the pair of left and right travel system modules is included.

In addition, in the above embodiment, the attachment module is a rotating attachment that is arranged at the front and upper part of the main body module, and a boom slewing cylinder bracket is fixed to the upper portion of a slewing bearing, the lower part of the slewing bearing is fixed to the upper plate of the main body module; thus, the attachment module, the boom swing cylinder bracket, and the slewing bearing are mounted on the same swing axis, and the attachment module is mounted to the boom swing cylinder bracket using bolts.

In addition, in the above embodiment, an angle sensor is installed between the top plate of the main body module and the boom swing cylinder bracket to detect the swing angle of the attachment module, and by marking the front point on the bottom of the boom swing cylinder bracket, an operator can measure the swing angle of the attachment based on using the square on the top plate of the main body module.

Also, in the above embodiment, both the outside of the main body module and the inside of the crawler frame are welded to rail-like mounting bars so that the main body can slide in the front and rear directions with respect to the traveling system module, and each has a complementary shape to prevent that the main body module and the driving system module deviate in the lateral directions. After these rail parts are assembled, they are assembled by using a plurality of bolts from the outside of the travel system module.

In addition, in the above embodiment, a fastening means for providing an additional coupling force while guiding the sliding movement of the main body module is provided at the front or rear of the coupling point of the main body module and the traveling system module. The additional fastening means includes a slot formed in one of the main body module (front) and the traveling system module (rear), the length of which is the same amount of sliding distance in the front and rear directions, and a fastening device that can slide within the slot when penetrating the slit.

In addition, in the above embodiment, the main body module has a lower frame with an open top; and an upper panel for covering the open upper part of the lower frame. The top plate is divided into a front top plate and a rear top plate for convenient assembly and maintenance.

In addition, in the above embodiment, the front and rear of the main body module are provided with the same standard interface, which enables disassembly and assembly of the same attachment module (e.g., the blade module).

In addition, in the above embodiment, it is also possible to fix the front attachment to the main body module using a simple pin in a raised state to sufficiently secure a working space in front of the main body module without moving it backward.

Using the modular small construction machine according to an embodiment of the present invention configured as above, the user disassembles and assembles the small construction machine directly, and can reach the construction site (isolated space, high-rise construction site) difficult to access with existing construction machine.

In addition, from the manufacturer's point of view, it is possible to reduce production costs by increasing the number of common main platforms and reduce assembly time; From the consumer's point of view, it is possible to reduce the investment cost of purchasing various types of compact construction machinery and the maintenance cost.

character list

• 1 zeigt die traditionelle kompakte Baumaschine,
• 2 ist eine Darstellung eines Hauptplattformmoduls gemäß einer Ausführungsform der vorliegenden Erfindung,
• 3 und 4 sind beispielhafte Ansichten, die einen Zustand zeigen, in dem ein oberes Anbaugerät an dem in 2 dargestellten Hauptplattformmodul selektiv demontiert und montiert werden kann und einen Zustand, in dem ein Paar Fahrsystemmodule und ein Bulldozermodul demontiert sind,
• 5 und 6 sind beispielhafte Ansichten, die einen Zustand zeigen, in dem das Fahrsystemmodul an dem Hauptkörpermodul montiert ist, und einen Demontagezustand eines rechten Raupenmoduls,
• 7 ist eine schematische Ansicht einer kompakten Baumaschine, die in der Lage ist, die Länge in der Vorwärts- und Rückwärtsrichtung einzustellen, gemäß einer anderen Ausführungsform der vorliegenden Erfindung,
• 8 ist eine schematische Ansicht einer Hauptplattform, bei der sowohl die obere als auch die vordere Anbaugeräts von der in 7 gezeigten kompakten Baumaschine entfernt sind,
• 9 ist eine Querschnittsansicht der Schieneneinheiten in der in 7 gezeigten kompakten Baumaschine,
• 10 und 11 sind Querschnittsansichten, die den Befestigungszustand der zusätzlichen Befestigungsmittel an der Vorderseite bzw. Rückseite der Baumaschine zeigen,
• 12 und 13 sind Seitenansichten, die den Zustand vor (normaler Gebrauch) bzw. nach dem Verschieben (Transportieren) des Oberkörpermoduls zeigen,
• 14 ist eine schematische Ansicht, die einen Zustand zeigt, in dem die oberen Platten auf der in 8 gezeigten Hauptplattform montiert sind,
• Figure 15 ist eine schematische Ansicht, die einen Zustand zeigt, in dem nur die vordere obere Platte von der in 14 gezeigten Hauptkörperplattform getrennt ist,
• 16 ist eine schematische Ansicht einer Hauptkörperplattform mit der gleichen Schnittstelle sowohl vorne als auch hinten, so dass das vordere Anbaugerät (hier Planierraupe) selektiv vorne und hinten angebracht und abgenommen werden kann,
• 17 ist eine erläuternde Ansicht, die ein Verwendungsbeispiel zeigt, wenn sowohl das obere Anbaugerät als auch das vordere Anbaugerät angebracht und gleichzeitig verwendet werden,
• 18 ist eine Vorderansicht eines Planierraupenmoduls, bei dem ein Befestigungsrohr durch eine Planierraupenverbindung und ein Zylinderscharnier installiert ist, nachdem der Planierschildzylinder in 17 entfernt und angehoben wurde,
• 19 und 20 sind erläuternde Ansichten, die die Schwenkwinkelmaße auf der oberen Platte und die Ursprungspunktmarkierung (vorne) des oberen Anbaumoduls zeigen,
• 21 zeigt eine Abdeckung zum Verhindern des Eindringens von Fremdkörpern, die an der Innenseite des Fahrsystemmoduls angebracht ist,
• 22 zeigt den Durchgangsschlitz zum Anschließen eines Hydraulikschlauchs eines Fahrmotors in dem unteren Rahmen des Hauptkörpermoduls zum leichteren Zusammenbau und Gleiten, und
• 23 zeigt die Rückseite der in 7 gezeigten kompakten Baumaschine.

The above and other objects, features and other advantages of the present disclosure will be better understood from the following detailed description when taken in connection with the accompanying drawings, in which:

• 1 shows the traditional compact construction machine,
• 2 Figure 12 is an illustration of a main platform module according to an embodiment of the present invention.
• 3 and 4 are explanatory views showing a state in which an upper attachment is attached to the FIG 2 shown main platform module can be selectively disassembled and assembled and a state in which a pair of travel system modules and a bulldozer module are disassembled,
• 5 and 6 12 are explanatory views showing a state in which the traveling system module is assembled to the main body module and a disassembling state of a right crawler module,
• 7 12 is a schematic view of a compact construction machine capable of adjusting the length in the front and rear directions according to another embodiment of the present invention.
• 8th Fig. 12 is a schematic view of a main platform showing both the top and front attachments of Fig 7 compact construction machine shown are removed,
• 9 13 is a cross-sectional view of the rail units in FIG 7 shown compact construction machine,
• 10 and 11 are cross-sectional views showing the attachment state of the additional fasteners at the front and rear of the construction machine, respectively;
• 12 and 13 are side views showing the condition before (normal use) and after moving (transporting) the upper body module,
• 14 Fig. 12 is a schematic view showing a state where the top plates are on the Fig 8th shown main platform are mounted,
• Figure 15 is a schematic view showing a state in which only the front top plate is removed from the 14 main body platform shown is separate,
• 16 Fig. 12 is a schematic view of a main body platform with the same interface both front and rear so that the front attachment (here bulldozer) can be selectively attached and detached front and rear,
• 17 Fig. 14 is an explanatory view showing an example of use when both the upper attachment and the front attachment are attached and used at the same time.
• 18 14 is a front view of a dozer module in which a mounting pipe is installed through a dozer link and a cylinder hinge after the dozer cylinder in FIG 17 removed and raised
• 19 and 20 are explanatory views showing the swing angle dimensions on the top plate and the origin point mark (front) of the top linkage,
• 21 shows a cover for preventing the ingress of foreign objects, which is attached to the inside of the driving system module,
• 22 Fig. 12 shows the through slot for connecting a hydraulic hose of a traction motor in the lower frame of the main body module for easy assembling and sliding, and Figs
• 23 shows the back of the in 7 shown compact construction machine.

DETAILED DESCRIPTION OF THE INVENTION

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. First of all, it should be noted that, as far as possible, identical components or parts are denoted by the same reference numbers throughout the drawings. Meanwhile, in the description of the embodiments of the present invention, detailed descriptions of related known technologies are omitted so as not to obscure the subject matter of the present invention.

As shown in [Table 1], components of compact construction machinery are broadly divided into 3 groups: tools, attachments, and main body platforms, and among them, attachments and main platforms are separate modules to meet the weight and size requirements. [Table 1] group module key components Remarks Tool power tool crushers, drum cutters, etc. market attachment upper attachment boom and arm Standard, custom front attachment bulldozer, boom rear attachment outrigger, step mobile main platform main body (lower) MCV, charger, battery common (upper) pump and motor, tank, counterweight driving system Crawler motor, idler pulley, roller wheel system wheels, wheel motor remote control operator seat Control lever, seat, protective structure

Regarding the tools, one can purchase the different tools with different functions in markets.

With regard to the attachments, various modules are prepared in order to configure a needs-based attachment module that is suitable for use with the compact construction machines. Depending on the attachment location, the top attachment, front attachment and rear attachment can be prepared and used as individual modules, and customized according to consumer needs or configured as standard specification.

The main mobile platform is divided into a main body module and a driving system module. The main body module becomes a commonly used core module that supplies the electrics required by the vehicle ric energy and / or provides the hydraulic pressure. The driving system module can be either a caterpillar type or a wheel type depending on the target mileage.

The mechanical interface between each module is based on a bolt/nut connection that can be easily assembled and disassembled, and the interface between the main body module and the attachment module additionally includes a counterplate for installing the attachment.

In the case of remote control, the driver's seat module disappears and a remote control module is required. These can be the options.

In electrically operated hydraulic construction machines, the battery, charger and MCV (main control valve) are housed in the main body module, and the main body module can be used in common for all construction machines.

The reason why the structure of the construction machines can be simplified is that the product structure is simplified when electric power is used, and in the case of a compact construction machine, it is easy to separate into independent modules because it has a simple canopy structure, too when an operator is on board.

In addition, power tools can be managed separately from the customer's point of view, since they can be purchased on the market as needed. In other words, the attachment is the key to the customer's desired function, and if there is a main mobile platform that can provide the required power and mount the attachments, a solution of different attachments and a common mobile platform can be secured.

From the vendor's point of view, if the main body is divided and only the attachment and standard interface are provided, the product can be configured and sold more effectively. According to the desired function, the attachment is divided into upper, front and rear working devices, and the travel system module can be divided into a crawler type and a wheel type according to the driving speed and traction force.

2 is a detailed design for a crawler-type mobile platform of a remote control electric construction machine, which is a result of lowering the center of gravity and considering assembly and maintainability. In the case of the exemplary construction machine, in the main body assembly for mounting the attachment, the upper plate 100 for installing the attachment is placed between the main body lower module and the attachment upper module, and the pivot bearing 101 is installed placed in the middle to hold the rotation of the attachment module. and the pump and motor 102 are installed at the rear. Also, an oil tank 103 is placed on the left side, an oil cooler 104 is installed on the right side to connect the hydraulic hoses to the pump in the middle, and a counterweight 105 is placed on the back to secure a front-back -Weight balancing during operation. An MCV, a main control valve 106, a charger 107 and a battery, which weigh a lot, are placed in the lower main body module, and the passages are secured on the left and right sides of the back of the upper plate 100 for connecting hoses with MCV 106, and the battery located at the rear can be replaced and repaired if necessary by opening the rear panel (not shown). That is, according to the attachment, by changing the top plate 100 and the interface and layout for arranging various parts on the top plate 100, the necessary construction machine can be configured while the main body module is common.

3 Fig. 14 is an example of a representative compact construction machine according to an embodiment of the present invention; in particular an example of construction machines for interior work with power tools. The crawler-type mobile platform is a module that can be used commonly for all construction machinery, and the interface is designed to match the attachments, so it has a structure that is easy to disassemble and assemble. The internal layout of the main body module consists of the same parts. However, according to customer requirements, the configuration of the main hydraulic valve or the specifications of the motor or pump are optionally provided.

In this case of a Power Tool Carrier, 9 Section Valves (Left/Right Track, Dozer, Boom Swing, Boom 1/2/3, Bucket, Aux) are used. As in 3 shown, to fix the boom support 2 of the attachment C to the boom swing piston bracket 4 on the main body module A, a plurality of bolts, for example 10 bolts, are used on the same circumference, so that disassembly and assembly with standard tools is possible. More specifically, the lower part of the slewing bearing is fixed to the upper plate 100 of the main body module A, and the boom swing cylinder bracket 4 connected to the piston rod of the boom swing cylinder is fixed to the upper part of the slewing bearing. Thus, the boom swing movement of the attachment C and the vertical movement of the attachment C can be separated. In addition, the connecting ring 5 is installed on the boom 1 6 and the boom 3 7, so it is easy to handle the attachment C after disconnection.

In addition, when the attachment is of the swing type as described above, a sensor device for measuring the angle of the attachment is required to control the swing movement based on the swing position of the attachment with respect to the direction of travel. For this purpose, an angle sensor body is installed on the top plate of the main body module, and the magnetic sensor head or rotary shaft attachment part, which rotates relative with the angle sensor body, is attached to the lower part of the boom swing cylinder bracket. The boom swing angle of the attachment to be measured should preferably be configured as non-contact (magnetic head, Hall sensor) or contact (change in the resistance value of the shaft and potentiometer).

For example, an 11-person residential elevator is now limited to a depth of 1350mm and a maximum weight of 750kg. 4 Fig. 11 is an example of an embodiment applicable to the case where the main mobile platform is too long or too heavy to be loaded into the elevator, ie when the elevator door does not close, the front work implement (D; dozer blade) and the Travel system modules B are separated from the main body module A.

Each module provides a standard interface that can be attached to an externally accessible point with bolts and nuts, allowing the user to easily disassemble and assemble directly. The hydraulic hoses that supply hydraulic pressure to the blade cylinder 13 and the crawler motor 14 use a quick connector 15 to enable instant disconnection and connection without oil leakage. Specifically, in the case of the crawler motor 14, for connection with the MCV inside the lower main body module A, passages 16 are provided at the center of both sides of the lower frame of the main body module A so that the hose for the crawler motor can pass and the length of the hoses is long enough to combine the hose inside the main body module. If required, holes 17 are installed in the front backing plate 18 to secure hose passage from the MCV to the blade cylinder.

The dozer blade D installed at the front of the drive body module A using the front backing plate 18 is easy to find at an attachment point from the outside, but the interface to assemble the travel system module B requires not only the convenience of disassembling and assembling but also the structural rigidity; thus, specific embodiments will be described in more detail.

5 Fig. 12 shows an assembled state of a travel system module that can be disassembled and transported when it is difficult to get on an elevator even if the length is reduced by removing the dozer blade installed at the front of the main mobile platform.

In order to ensure the rigidity required for use after assembly between the main body module A and the pair of left and right traveling system modules B, the rigidity of the combined main body module A in the front and rear directions and in the vertical direction perpendicular to the ground must be taken into account.

First, to ensure the rigidity in the front and rear directions of the main body module A, a mounting bar 202 with an L-shaped cross section is installed on the inner surface of the crawler frame and a mounting bar 203 with a rectangular cross section is installed on the outer surface of the main body module. They face each other and can be assembled while placing the mounting bar 203 on the L-shaped mounting bar 202 . By securing the accessible positions on the crawler frame from the outside of the traveling system module, one can assemble and disassemble the traveling system module from the main body module A. The attachment positions are, for example, four screw attachment points 204a, 204b, 204c, 204d (see 3 ) by utilizing the open space between the track and track frame when viewed from the outside.

In addition, to ensure the rigidity in the vertical direction, the back of the crawler frame extends upward to utilize the space between the top of the crawler and the top plate 100 of the main body. For example, two bolt attachment points 208a, 208b (see 3 ) and bolts are fixed to the main body module A side from the outside of the traveling system module B.

In order to ensure the vertical rigidity below the L-shaped mounting bar 202 and the rectangular cross-sectional mounting rail 203, spacers with screw heads 201 are welded to the inside of the front lower part of the crawler frames, and holes are formed on the main body module A side. After the screw head is inserted through the hole, it is fixed inside the main body module A with the nut 209 .

Also, during forward movement, a force is applied that causes the left and right track frames to spread. When the above-described coupling structure is not enough to ensure the rigidity, the tie rod 211 is installed at a height that does not lower the ground clearance. By installing the pull rod using the space in front of the main body module A, the left and right crawler frames are directly connected to prevent the left and right crawler frames from widening. Similarly, a pull bar can be installed using the rear space of the main body module A to prevent the crawler frames from widening when moving backward.

When disassembling the travel system module from the main body module, users slightly raise the front part of the main body module A from the ground with a dozer blade, and put a hydraulic jack under the main body module A from behind and lift it slightly until the travel system modules B are off the ground. Users then disassemble the front top plate of the main body module and disconnect the crawler motor hydraulic hoses. Users open the front cover 109 of the main body module, loosen the bolts 201 and nuts 209 connecting the driving system B and the main body module A. Users now separate the ride system module B from the main body module A by loosening the attachment screws at possible six bolt attachment points 204a, 204b, 204c, 204d; 208a, 208b. Users place the wheel carrier under the main body module before removing the dozer module. Next, users raise the dozer blade slightly off the ground, disconnect the dozer blade cylinder hose, and loosen the mounting bolts to separate the dozer blade module from the front of the main body module. The assembly is done in reverse order.

A modular compact construction machine according to another embodiment of the present invention, which is designed to be able to adjust the length in the front and rear directions of the construction machine without separating the traveling systems, will be described below. In this embodiment, it is divided into a main body module and a traveling system module, but the two modules are formed with rail parts each having a complementary shape on the side facing each other so that the main body module can slide in the front and rear directions with respect to the traveling system module. For normal operation, the main body module is attached through the use of multiple fasteners from the outside of the ride system module.

As in 7 and 8th As shown, the modular compact construction machine 1000, which is length-adjustable in the front and rear directions according to an embodiment of the present invention, has a central main body module A, a pair of travel system modules B, and desired attachments C, D can be mounted on the top and front of the Main body module A are replaced and used. Since the standard interface for disassembly and assembly between these modules has been detailed above, it will be detailed below with a focus on specifically improved or changed parts.

In the case that a prototype is to be made as compact as possible while achieving the functions and performances required by the present applicant in the related industry, the length of the driving system module B is 1330 mm and the length of the main body module A is in the middle 1330mm to be 1240mm. However, in order to ensure stability during work, the main body module A should be arranged to be about 80mm biased backward than the travel system module B (Refer to Fig 8th etc.), the length of the main mobile platform is 1410 mm.

When mounting in a confined space, e.g. when boarding an elevator, the length of the vehicle could be an issue. By adopting a mutually relocatable structure, the Overall length of the construction machine in the forward and backward directions slightly reduced within the length of the traveling system module 200, which is relatively longer than the main body module. The overall length of the construction machine in the front and rear directions when assembled is 1410mm, but the overall length of the construction machine in the front and rear directions can be reduced by 80mm by sliding the main body module A forward so that it can be adjusted are within the length of the driving system module B; thus the overall length is 1330 mm. In other words, if the length is reduced without disconnecting the caterpillar module, an 11-seater elevator with a length of 1350mm can be climbed.

In order to comprehensively achieve the working stability in the assembled state and the easy length adjustment for the transport in the narrow space, as in 9 As shown, rail parts 210, 110 are formed on opposite sides of the main body module A and the traveling system module B, and have complementary shapes that do not deviate left and right when sliding in the forward and backward directions, respectively. In a state in which the rail parts 210, 110 are joined together, they can be fastened with a plurality of, for example, three fastening bolts BT which, in 12 shown can be connected from the outside of the construction machine, which is easily accessible.

At this time, the rail parts 210, 110 should not fall out to the left and right in the assembled and coupled state as shown in FIG 9 1, and the main body module easily slides in the front and rear directions of the construction machine when the fastening bolts BT are loosened. It must be made in a suitable form so that it has a cross-sectional "L" shape and a corresponding "L" shape as in 9 shown, can be produced.

In addition, it is preferable to provide additional fasteners on the front and rear of the traveling system module B in order to stably guide the sliding movement of the main body module A and provide additional coupling force.

The additional attachment means may include a slit formed in a front and rear direction in one of the main body module and the traveling system module; and a mount formed on the other of the main body module and the traveling system module to be slidable in the slot while penetrating the slot.

In detail, as additional fasteners, as in the 11 and 12 As shown, the travel system module B extends in the rear of the construction machine in the up and back directions to form a crawler guide slot 220 . A weld nut is welded to the inside of the corresponding part of the main body module A and fixed with a socket head cap screw 120 through the slot 220 from the outside of the construction machine.

Additionally, as in 10 1, a main body guide slot (not shown) is formed longitudinally at the front lower portion of the lower frame of the main body module A. As shown in FIG. A shaft with a trunnion is welded to the corresponding position of the travel system module B, and hex head screws 230 are used to fasten through the slot from the inside of the lower frame of the main body module A.

Thus, an optimal fixing force can be achieved by providing an additional fixing means in the lower area of the front part and in the upper area of the rear part on the side. Considering easy access during assembly, it is preferable to configure the front part to be accessible from the inside of the main body frame and the rear part to tighten and loosen the screws from the outside of the construction machine.

When the construction machine is used in a coupled state, the traveling system module B and the main body module A configured as described above are arranged so that the main body module A protrudes rearward, taking work stability into consideration, as in FIG 12 shown; this brings the center of gravity of the machine to the rear. When length adjustment is required for transporting the construction machine, users remove the three fixing bolts BT and loosen the bolts 120, 230 fixed to the front and rear slots 220. You slide the main body module A forward. You then attach the bolts 120, 230 to the front and rear slots 220 as shown in FIG 13 shown, the length of the entire construction machine in the front and rear directions is adjusted to be minimized within the length of the traveling system module B. 12 and 13 show the pre- and post-sliding movement in which the pin 120 moves behind the track guide slot 220 in 12 and at the front of the track guide slot 220 in 13 . The range of sliding movement is limited to the longitudinal distance of the guide slot 220 .

In this way, after transportation in a narrow elevator in a state where the length in the forward and backward directions is set short, when users want to do the work again, they first loosen the fixed bolts 120, 230. After users remove the main body module A backwards, tighten screws 120, 230 and center rail mounting screws BT. Then the in 12 tidal state restored.

On the other hand, the main body module A consists of the lower frame of the open-topped mold having a space for accommodating components and a top plate for covering the open top of the lower frame on which other components are installed. The top panel is preferably made separately into a front top panel and a rear top panel for facilitating assembly and maintenance work. In the interior of the lower frame of the main body module 100, a main control valve MCV, a battery, and a charger are installed in order from the front of the construction machine. For accessibility to the above components, as in 8th , the upper part of the interior space is made open at the top, and with the top plate covered on it, components such as an upper attachment, engine and hydraulic devices are installed. For example, a configuration for swing operation of the attachment C is properly arranged on the front part of the top plate, and a main motor, pump, oil tank, oil cooler, etc. for driving the entire construction machine are properly arranged on the rear part of the top plate . A counterweight is placed behind the main body module to ensure front and rear weight balance while working. This is the result of lowering the overall center of gravity and considering assembly and serviceability.

When the lower frame structure of the main body module A with an open top structure receives a vertical load on both sides, the side walls of the frame are shrunk inward. In addition, in the case of the upper panel structure covering the frame of the open structure, it is necessary to take into account the convenience of assembly and disassembly and selective accessibility to the inside of the lower frame. For this purpose it is preferable to add two reinforcing frames 160, 170 in the middle as in 8th shown, in addition to the front and rear ends of the lower frame. In particular, it is preferable to strengthen the rigidity of the lower frame by adding front and rear reinforcement frames 160, 170 made of '∩' shaped steel to stably fix the front top plate to which the pivot bearing of the attachment is installed .

Additionally, as exemplified in 14 and 15 As shown, the top plate is made separately into front and rear top plates 140, 150 to facilitate hydraulic piping or maintenance work, a slewing bearing and an attachment are mounted on the front top plate 140, and an electric motor, pump, etc. are on of the rear top plate 150 mounted. As in 15 1, during maintenance of the MCV installed under the front top plate, the front top plate 140 and the attachment as a whole can be separated after removing the piston pin of the boom swing cylinder. At this time, the hose connection attachment and MCV are pulled out to the front of the front top plate 140 and connected to the attachment hose connection block 260; please refer 16 . When disconnecting the front top plate attachment from the main body, a Q/C fitting is installed to easily disconnect the hose from the attachment hose connector block. In addition, in order to facilitate the disassembly and assembly of the front top plate, the front and rear widths of the top plate are narrowed within the range in which the pivot bearing unit can be installed and fixed to the front and rear reinforcement frames 160,170. In order to maintain the rigidity of the front top panel, it is desirable to weld the reinforcement panels on the underside.

It is preferable that the same standard interface for disassembling and assembling the same add-on module is provided on the front and rear of the main body module A.

The front attachment D, e.g. B. the dozer blade is designed so that it is detachable from the front of the main body module A using a counter-plate, as schematically in 7 shown. For example, in the case of the disassembling and assembling method, by attaching and fixing eight bolts, for example, three on both sides left and right and two on the top, the eight tabs evenly arranged on the corresponding part of the front of the lower frame of the main body module A must be provided.

In addition, it is necessary to selectively mount and use the blade D from both the front and rear of the construction machine G according to the working characteristics. Therefore, the corresponding part of the rear surface of the lower frame of the main body module A is designed to have the same interface, and as in 16 is shown. It is preferable to selectively attach and detach the blade module D to the front or rear of the construction machine based on the operator's judgment of the workability. Of course, the hydraulic hoses for the hydraulic pressure supply to the cylinder for the dozer blade must also be prepared with a quick coupling for use both at the front and at the rear. Using quick connectors, instant disconnect and connect without leakage is possible.

In addition, it is preferable that the blade mounted on the front of the main body module can be fixed to the main body module in a raised state. For example, when excavation work is performed using the upper attachment C, a collision between a tool such as a bucket and the dozer blade D may occur. As in 17 shown, it is designed to be lifted and attached to the traction body module A. As in 18 shown, when the implement and metering device collide during front work, users disconnect the hinge on the dozer blade cylinder body, lift up the dozer blade D 90 degrees or more, and fix it to the main body module A with the fixed tube 410.

If that's in 17 The upper attachment shown is a swing attachment, a sensor device for measuring the swing angle of the attachment C is required in order to control the swing movement of the attachment C. For this purpose, a bracket for fixing the angle sensor body is installed on the top plate of the main body module A, the angle sensor is fixed there, aligned with the pivot axis, and the magnetic sensor head or a fixing part of the rotary shaft that makes relative rotation with the angle sensor body is on installed on the underside of the boom slewing cylinder bracket to measure the slewing angle of the attachment non-contact (magnetic head, Hall sensor) or contact (change in resistance value and potentiometer). To set the origin of the actual slewing angle, a pointer pointing in the front direction is marked on the boom slewing cylinder bracket, and angular dimensions are displayed on the front top plate, so that the left and right slewing angles can be easily recognized.

In order to connect the crawler motor of the travel system module B and the MCV inside the main body module A, a slit needs to be secured to allow the hydraulic hoses and quick couplers, etc. to pass through at the center lower part of the main body module A side.

It is preferable to lengthen the longitudinal passage in the front-rear direction so that the traveling system module B can be easily disassembled and assembled from the main body module A with short hydraulic hoses. In addition, it is necessary to install a plate at the corresponding position of the crawler frame to prevent foreign objects from entering through the enlarged through slot from the ground. For this purpose, as in 22 1, a through slot 180 is formed in the lower center of the lower frame side of the main body module A. As shown in FIG. The size of the through slit is determined by the following conditions: when mounting the traveling system module A on the side of the lower frame, the connecting hose for the crawler motor is spread in the shortest way, and when disassembling the traveling system module B is spread as wide as possible. Additionally, as in 21 1, a cover 250 for preventing inflow of objects is attached to the traveling system module B to prevent foreign matter from entering the side opening 180 when the construction machine is used.

23 is an explanatory view showing the back of the in 7 shown compact construction machine. When lifting the compact construction machine configured as described above, the front can use the dozer blade linkage, but the rear has a problem that the suspension point is ambiguous. It is preferable to form two holes 190 through which hooks can be hung on either side of the rear part of the lower frame.

The foregoing embodiments of the present disclosure have been disclosed for purposes of illustration. Those skilled in the art having ordinary knowledge of the present disclosure will be able to effect various modifications, changes and additions within the scope of the present disclosure the present disclosure, and such modifications, changes and additions should be construed as included within the scope of the following claims.

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• KR 1020140029672 [0003]

Claims (13)

Modular compact construction machine separately manufactured as main body module, travel system module and add-on modules; while the modules can be easily integrated through the use of standard interfaces that allow users to easily disassemble and assemble each module to ensure portability in a small space. Modular compact construction machine claim 1 , where the standard interfaces are bolt, nut and backing plate as mechanical interface; and/or quick couplings as a hydraulic hose interface; and/or wiring harness with plugs as an electrical cable interface. Modular compact construction machine claim 1 wherein the main body module has an electrical power and hydraulic system comprising a battery, a charger, an electronically controlled hydraulic valve and a pump and an electric motor; and the travel system module coupled to the main body module is a crawler or wheel type travel system. Modular compact construction machine claim 1 , wherein the travel system module is a crawler-type travel system module that is detachably mounted on the left and right sides of the main body module, and three or more bolts are used to increase the rigidity in the vertical direction perpendicular to the ground and in the front and rear directions of the compact construction machine ensure; wherein, to secure the front and rear directional rigidity, a mounting bar having a rectangular cross section is installed in the front and rear direction of the main body module side, and a mounting bar having an L-shaped cross section is installed in the crawler frame of the traveling system module facing the main body module side, and the mounting rods are bolted from a location accessible from the outside of the travel system module; wherein, in order to ensure the vertical directional rigidity at the rear of the compact construction machine, the crawler frame is extended upward and fixed to the side surface of the main body module with bolts; at the lower front of the compact construction machine, bolts and spacers welded to the crawler frame are inserted into the main body module and fixed with nuts inside the main body module. Modular compact construction machine claim 4 , further comprising a tie rod connecting and fixing the front and/or rear lower ends of the left and right pairs of travel system modules. Modular compact construction machine claim 1 , wherein the attachment module is a swing device located above the main body module, and the attachment module is fixedly attached to the top of the boom swing cylinder mount by a plurality of circumferentially spaced bolts, and the underside of the boom swing cylinder mount with an upper portion of a swing bearing on the same axis of pivotal movement, and the bottom of the pivot bearing is fixed to the top plate of the main body module. Modular compact construction machine claim 6 , where an angle sensor is installed on the upper plate of the main body module to detect the slewing angle of the attachment module, and a pointer aiming in the front direction is marked on the lower part of the boom slewing cylinder bracket, and the upper plate has a scale, with which the swivel angle can be measured. Modular compact construction machine claim 1 , wherein rails having complementary shapes are formed on opposite sides of the traveling system module and the main body module so that the main body module can slide in the front and rear directions with respect to the traveling system module, and wherein the main body module and the traveling system module are attached using a plurality of fasteners from the outside of the traveling system module are detachably coupled in a state where these rails are joined together. Modular compact construction machine claim 8 wherein an additional fastening means for providing a coupling force while guiding the sliding movement of the main body module is provided at the front or rear of the coupling point of the main body module and the traveling system module using the plurality of fastening means. Modular compact construction machine claim 9 wherein the additional fastening means comprises a slit formed in one of the main body module and the traveling system module in the fore and aft direction; and a mount formed on the other of the main body module and the traveling system module to be slidable along the slot while penetrating the slot. Modular compact construction machine claim 1 wherein the main body module includes a lower frame having a space for receiving components, and an open top; and a top panel for covering the open top of the lower frame and installing other components thereon; and the top panel is manufactured separately into a front top panel and a rear top panel. Modular compact construction machine claim 1 , in which the front and rear of the main body module provide the same standard interface to assemble and disassemble the same add-on module. Modular compact construction machine claim 1 wherein a front attachment module and the main body module integration method are provided to secure a front working space by attaching the front attachment module to the main body module while the front attachment module is fully raised.