Construction machine

Abstract

The present invention relates to a construction machine comprising: a plurality of hydraulic operation units for converting fluid energy into mechanical energy; and a main control valve including a plurality of modules for distributing fluid to the plurality of hydraulic operation units, wherein at least some of the plurality of modules are formed to be attachable / detachable so that specifications can be easily changed.

Description

construction machinery

[0001] The present invention relates to construction machinery, and more particularly, to construction machinery capable of performing civil engineering or construction work.

[0002] In general, construction machinery is a machine used in civil engineering or construction work, such as an excavator or loader, and includes a hydraulic generator that generates fluid energy, a plurality of hydraulic actuating units that convert the fluid energy into mechanical energy, and a main control valve for distributing fluid from the hydraulic generator to the plurality of hydraulic actuating units.

[0003] Here, the plurality of hydraulic operating units may include a travel actuator for moving a lower body movable along the ground, a swing actuator for rotating an upper rotating body rotatably coupled to the lower body, a boom actuator for rotating a boom rotatably coupled to the upper rotating body, an arm actuator for rotating an arm rotatably coupled to the boom, and a bucket actuator for rotating a bucket rotatably coupled to the arm, and in this case, the main control valve is formed to receive fluid from the hydraulic generating unit and distribute the fluid to the travel actuator, the swing actuator, the boom actuator, the arm actuator, and the bucket actuator.

[0004] And, depending on the required specifications, the plurality of hydraulic operating units may further include a regenerative unit for storing and regenerating hydraulic pressure, a detachable attachment, a dozer actuator for rotating a dozer rotatably coupled to the lower body, an arti actuator for operating the arti boom when the boom is formed as an articulated arti boom, etc. In this case, the main control valve is formed to distribute fluid to elements further included in the plurality of hydraulic operating units.

[0005] However, in conventional construction machinery, since the main control valve is configured as a single block, when the configuration of multiple hydraulic operating parts is changed, the main control valve must be replaced with a new main control valve, making it difficult to change specifications.

[0006] Accordingly, the present invention aims to provide a construction machine whose specifications can be easily changed.

[0007] The present invention provides a construction machine comprising: a main control valve including a plurality of hydraulic operating units for converting fluid energy into mechanical energy; and a plurality of modules for distributing fluid to the plurality of hydraulic operating units; wherein at least some of the plurality of modules are formed to be detachable, in order to achieve the above-described purpose.

[0008] The above plurality of modules are each formed to be detachable, and the main control valve can be formed by assembling a module selected from the plurality of modules.

[0009] The plurality of modules may include a drive module for distributing fluid to a drive actuator, a swing module for distributing fluid to a swing actuator, a boom module for distributing fluid to a boom actuator, an arm module for distributing fluid to an arm actuator, and a bucket module for distributing fluid to a bucket actuator.

[0010] When the above boom module, the arm module, the driving module and the bucket module are selected, the boom module can be placed on the opposite side of the driving module and the bucket module with respect to the arm module.

[0011] The above plurality of modules further include an optional module for distributing fluid to the attachment, and when the boom module, the arm module, the driving module, the optional module and the bucket module are selected, the boom module can be arranged on the opposite side of the driving module, the optional module and the bucket module with respect to the arm module.

[0012] If the above swing module is further selected, the swing module may be placed on the same side as the boom module with respect to the arm module.

[0013] The plurality of hydraulic operating units include a regenerative unit for storing and regenerating hydraulic pressure, and the plurality of modules further include a regenerative module for controlling fluid inflow and outflow of the regenerative unit, and when the regenerative module is further selected, the regenerative module is disposed between the boom module and the swing module and can be connected to the boom module and the swing module.

[0014] The boom module may be mounted on the arm module, the recovery module may be mounted on the boom module on the opposite side of the arm module with respect to the boom module, and the swing module may be mounted on the recovery module on the opposite side of the boom module with respect to the recovery module.

[0015] The above option module and the bucket module can be placed on opposite sides of the arm module with respect to the driving module.

[0016] The driving module may be mounted on the arm module, the option module may be mounted on the driving module on the opposite side of the arm module with respect to the driving module, and the bucket module may be mounted on the option module on the opposite side of the driving module with respect to the option module.

[0017] The driving module is mounted on the arm module, and the option module and the bucket module are formed integrally, with the outlet port of the option module facing in the opposite direction to the outlet port of the bucket module, and can be mounted on the driving module on the opposite side of the arm module with respect to the driving module.

[0018] The above plurality of modules further include a doser module for distributing fluid to a doser actuator and an arti module for distributing fluid to an arti actuator, and when at least one of the doser module and the arti module is further selected, the selected one of the doser module and the arti module can be arranged on the opposite side of the driving module with respect to the option module and the bucket module.

[0019] The driving module is mounted on the arm module, the option module is mounted on the driving module on the opposite side of the arm module with respect to the driving module, the bucket module is mounted on the option module on the opposite side of the driving module with respect to the option module, the dozer module is mounted on the bucket module on the opposite side of the option module with respect to the bucket module, and the arti module can be mounted on the dozer module on the opposite side of the bucket module with respect to the dozer module.

[0020] The driving module is mounted on the arm module, the option module and the bucket module are formed integrally, but the outlet port of the option module is formed to face in the opposite direction to the outlet port of the bucket module, and is mounted on the driving module on the opposite side of the arm module with respect to the driving module, and the dozer module and the arti module are formed integrally, but the outlet port of the dozer module is formed to face in the opposite direction to the outlet port of the arti module, and can be mounted on the option module and the bucket module on the opposite side of the driving module with respect to the option module and the bucket module.

[0021] The above selected modules can be assembled such that the outlet ports of some of the above selected modules face in one direction and the outlet ports of the remaining of the above selected modules face in the opposite direction to the one direction.

[0022] The plurality of hydraulic operating units include a swing actuator for rotating an upper rotating body rotatably coupled to a lower body that can move along the ground, a boom actuator for rotating a boom rotatably coupled to the upper rotating body, and a regenerative unit for storing and regenerating hydraulic pressure, and the plurality of modules include a first module connected to a hydraulic generating unit that generates fluid energy, and a second module connected to the swing actuator, the boom actuator, and the regenerative unit and detachably formed on the first module, and the second module includes a regenerative module that controls fluid inflow and outflow of the regenerative unit, a swing module that controls fluid inflow and outflow of the swing actuator and is connected to the regenerative module, and a boom actuator that controls fluid inflow and outflow and is connected to the regenerative module, and the regenerative module, the swing module, and the boom module may each be detachably formed on the first module individually, or may be detachably formed on the first module after being assembled together.

[0023] A construction machine according to the present invention comprises a main control valve including a plurality of hydraulic operating units for converting fluid energy into mechanical energy; and a plurality of modules for distributing fluid to the plurality of hydraulic operating units; wherein at least some of the plurality of modules are formed to be detachable, thereby enabling easy change of specifications.

[0024] FIG. 1 is a perspective view showing a main control valve in a construction machine according to one embodiment of the present invention;

[0025] FIG. 2 is a perspective view showing a main control valve in a construction machine according to another embodiment of the present invention;

[0026] FIG. 3 is a perspective view showing a main control valve in a construction machine according to another embodiment of the present invention;

[0027] FIG. 4 is a perspective view showing a main control valve in a construction machine according to another embodiment of the present invention;

[0028] FIG. 5 is a perspective view showing a main control valve in a construction machine according to another embodiment of the present invention;

[0029] Fig. 6 is a schematic diagram showing a hydraulic circuit including the main control valve of Fig. 5;

[0030] FIG. 7 is a perspective view illustrating a main control valve in a construction machine according to another embodiment of the present invention.

[0031] Hereinafter, the construction machine according to the present invention will be described in detail.

[0032] A construction machine according to one embodiment of the present invention may include a hydraulic generator for generating fluid energy, a plurality of hydraulic actuating units for converting the fluid energy into mechanical energy, and a main control valve for distributing fluid from the hydraulic generator to the plurality of hydraulic actuating units.

[0033] The above hydraulic generating unit may include a tank for storing and dissipating fluid and removing foreign substances, and a pump driven by receiving power from an engine and transporting the fluid in the tank.

[0034] The above-described plurality of hydraulic operating units may include a travel actuator for moving a lower body movable along the ground, a swing actuator for rotating an upper rotating body rotatably coupled to the lower body, a boom actuator for rotating a boom rotatably coupled to the upper rotating body, an arm actuator for rotating an arm rotatably coupled to the boom, a bucket actuator for rotating a bucket rotatably coupled to the arm, an attachment detachable from the lower body or the upper rotating body, a dozer actuator for rotating a dozer rotatably coupled to the lower body, and an articulating actuator for manipulating the articulating boom when the boom is formed as an articulated articulating boom.

[0035] The above main control valve can be formed to receive fluid from the hydraulic generating unit and distribute it to the plurality of hydraulic operating units.

[0036] Specifically, referring to FIG. 1, the main control valve may include a plurality of modules.

[0037] The plurality of modules may include a driving module (M1) for distributing fluid to the driving actuator, a swing module (M2) for distributing fluid to the swing actuator, a boom module (M3) for distributing fluid to the boom actuator, an arm module (M4) for distributing fluid to the arm actuator, a bucket module (M5) for distributing fluid to the bucket actuator, an option module (M6) for distributing fluid to the attachment, a doser module (M7) for distributing fluid to the doser actuator, and an arti module (M8) for distributing fluid to the arti actuator.

[0038] Here, the plurality of modules are formed to be detachable, and the main control valve can be formed by assembling the plurality of modules.

[0039] Specifically, the arm module (M4) can be in fluid communication with the hydraulic generator. Here, in the present embodiment, the arm module (M4) is in fluid communication with the hydraulic generator, and other modules are in fluid communication with the hydraulic generator through the arm module (M4), but this is not limited thereto. That is, any module among the other modules can be in fluid communication with the hydraulic generator, and the remaining modules among the other modules and the arm module (4) can be in fluid communication with the hydraulic generator through any module.

[0040] The above boom module (M3) is mounted on the arm module (M4) and can be in fluid communication with the arm module (M4).

[0041] The above swing module (M2) is mounted on the boom module (M3) on the opposite side of the arm module (M4) with respect to the boom module (M3) and can be in fluid communication with the boom module (M3).

[0042] The above driving module (M1) is mounted on the arm module (M4) and can be in fluid communication with the arm module (M4).

[0043] Here, when the driving actuator includes a first driving actuator and a second driving actuator, the driving module (M1) includes a first driving module (M11) for distributing fluid to the first driving actuator and a second driving module (M12) for distributing fluid to the second driving actuator, and the first driving module (M11) is mounted on the arm module (M4) and is in fluid communication with the arm module (M4), and the second driving module (M12) is mounted on the first driving module (M11) on the opposite side of the arm module (M4) with respect to the first driving module (M11) and is in fluid communication with the first driving module (M11).

[0044] The above option module (M6) is mounted on the driving module (M1) on the opposite side of the arm module (M4) with respect to the driving module (M1) and can be in fluid communication with the driving module (M1).

[0045] The above bucket module (M5) is mounted on the option module (M6) on the opposite side of the driving module (M1) with respect to the option module (M6) and can be in fluid communication with the option module (M6).

[0046] The above dozer module (M7) is mounted on the bucket module (M5) on the opposite side of the option module (M6) with respect to the bucket module (M5) and can be in fluid communication with the bucket module (M5).

[0047] The above-mentioned arti module (M8) is mounted on the dozer module (M7) on the opposite side of the bucket module (M5) with respect to the dozer module (M7) and can be in fluid communication with the dozer module (M7).

[0048] Here, considering the overall balance of the main control valve, it may be desirable for the swing module (M2) and the boom module (M3) to be arranged on the opposite side of the driving module (M1), the option module (M6), the bucket module (M5), the dozer module (M7), and the arti module (M8) with respect to the arm module (M4).

[0049] And, as will be described later, the swing module (M2) may be removed or a recovery module (M9) may be interposed between the swing module (M2) and the boom module (M3). To facilitate such deformation, it is preferable that the swing module (M2) be arranged on the opposite side of the boom module (M3) with respect to the arm module (M4), and it may be more preferable that the swing module (M2) be arranged on the opposite side of the arm module (M4) with respect to the boom module (M3).

[0050] And, as will be described later, the dozer module (M7) and the arti module (M8) can be removed or replaced with other modules. To facilitate such modification, the option module (M6) and the bucket module (M5) are preferably arranged on the opposite side of the arm module (M4) with respect to the driving module (M1), and the dozer module (M7) and the arti module (M8) are preferably arranged on the opposite side of the driving module (M1) with respect to the option module (M6) and the bucket module (M5).

[0051] Meanwhile, in the case of the embodiment illustrated in FIG. 1, the plurality of hydraulic operating parts include the driving actuator, the swing actuator, the boom actuator, the arm actuator, the bucket actuator, the attachment, the dozer actuator, and the arti actuator, and the main control valve includes, but is not limited to, the driving module (M1), the swing module (M2), the boom module (M3), the arm module (M4), the bucket module (M5), the option module (M6), the dozer module (M7), and the arti module (M8).

[0052] For example, when the plurality of hydraulic operating units are changed so as not to include the dozer actuator and the arti actuator, as compared to the embodiment illustrated in FIG. 1, the dozer module (M7) and the arti module (M8) can be removed from the main control valve. That is, as illustrated in FIG. 2, the main control valve can be reconfigured as an assembly of the first driving module (M11), the second driving module (M12), the swing module (M2), the boom module (M3), the arm module (M4), the bucket module (M5), and the option module (M6).

[0053] As another example, when the plurality of hydraulic operating units are changed so as not to include the dozer actuator, as compared to the embodiment illustrated in FIG. 1, the dozer module (M7) can be removed from the main control valve. That is, although not illustrated separately, the main control valve can be reconfigured as an assembly of the first driving module (M11), the second driving module (M12), the swing module (M2), the boom module (M3), the arm module (M4), the bucket module (M5), the option module (M6), and the articulating module (M8).

[0054] As another example, when the plurality of hydraulic operating units are changed so as not to include the arti actuator, as compared to the embodiment illustrated in FIG. 1, the arti module (M8) can be removed from the main control valve. That is, although not illustrated separately, the main control valve can be reconfigured as an assembly of the first driving module (M11), the second driving module (M12), the swing module (M2), the boom module (M3), the arm module (M4), the bucket module (M5), the option module (M6), and the dozer module (M7).

[0055] As another example, if the plurality of hydraulic operating units are changed so as not to include the second driving actuator, as compared to the embodiment illustrated in FIG. 2, the main control valve can be detached from the second driving module (M12). That is, as illustrated in FIG. 3, the main control valve can be reconfigured as an assembly of the first driving module (M11), the swing module (M2), the boom module (M3), the arm module (M4), the bucket module (M5), and the option module (M6).

[0056] As another example, when the plurality of hydraulic operating units are changed so as not to include the swing actuator, as compared to the embodiment illustrated in FIG. 2, the main control valve can be detached from the swing module (M2). That is, as illustrated in FIG. 4, the main control valve can be reconfigured as an assembly of the first driving module (M11), the second driving module (M12), the boom module (M3), the arm module (M4), the bucket module (M5), and the option module (M6).

[0057] As another example, when the plurality of hydraulic operating units are changed to include a regenerative unit for storing and regenerating hydraulic pressure, compared to the embodiment illustrated in FIG. 2, the main control valve may be equipped with a regenerative module (M9) that controls fluid inflow and outflow of the regenerative unit. That is, as illustrated in FIG. 5, the main control valve may be reconfigured as an assembly of the first driving module (M11), the second driving module (M12), the swing module (M2), the boom module (M3), the arm module (M4), the bucket module (M5), the option module (M6), and the regenerative module (M9).

[0058] Here, the recovery module (M9) may be formed to be detachable, similar to other modules. Furthermore, for purposes such as simplification of piping, reduction of losses, and cost reduction, the recovery module (M9) may be preferably positioned between the boom module (M3) and the swing module (M2), and formed to be connected to the boom module (M3) and the swing module (M2). That is, as described above, when the boom module (M3) is mounted on the arm module (M4) and is in fluid communication with the arm module (M4), the regenerative module (M9) is mounted on the boom module (M3) on the opposite side of the arm module (M4) with respect to the boom module (M3) and is in fluid communication with the boom module (M3), and the swing module (M2) is mounted on the regenerative module (M9) on the opposite side of the boom module (M3) with respect to the regenerative module (M9) and is in fluid communication with the regenerative module (M9).

[0059] Specifically, referring to FIG. 6, the hydraulic circuit including the main control valve of FIG. 5 may include a pump line (500) that connects the pump (300) and the main control valve, a swing line (600) that connects the main control valve and the swing actuator (100), and a boom line (700) that connects the main control valve and the boom actuator (200).

[0060] The above swing actuator (100) may include a first opening (110) and a second opening (120) that are connected to each other and a rotor (130) that is connected to an upper rotating body and rotates in one direction and the opposite direction depending on the direction of fluid flow between the first opening (110) and the second opening (120).

[0061] The boom actuator (200) may include a cylinder (210) connected to the upper rotating body, a piston (220) capable of reciprocating inside the cylinder (210), and a rod (230) extending from the piston (220) to the outside of the cylinder (210) and connected to the boom.

[0062] Here, the interior of the cylinder (210) is partitioned into a pair of chambers (240, 250) by the piston (220), and the pair of chambers (240, 250) may include a load chamber (250) in which the load (230) is received and a head chamber (240) which is an opposite chamber of the load chamber (250).

[0063] The above pump (300) may include a first pump (310) and a second pump (320) connected in parallel to the engine (Eg).

[0064] The above main control valve may include a swing main control valve (410) for transmitting fluid to the swing actuator (100) and a boom main control valve (420, 430) for transmitting fluid to the boom actuator (200).

[0065] The above pump line (500) may include a first pump line (510) that connects the first pump (310) and the swing main control valve (410) and a second pump line (520) that connects the second pump (320) and the boom main control valve (420, 430).

[0066] The above swing line (600) includes a swing direction control valve (690) for controlling the flow direction of the fluid in the swing line (600), a first swing line (610) for connecting one side of the swing direction control valve (690) and the swing main control valve (410), a second swing line (620) for connecting the other side of the swing direction control valve (690) and the swing main control valve (410), a third swing line (630) for connecting the swing direction control valve (690) and the first opening (110) of the swing actuator (100), a fourth swing line (640) for connecting the swing direction control valve (690) and the second opening (120) of the swing actuator (100), and a third swing line (630) for connecting the third swing line (630) and the fourth swing line (640) without allowing the fluid to flow in from the third swing line (630) and the fourth swing line (640). It may include a fifth swing line (650) that allows fluid to be discharged through the swing line (640), a sixth swing line (660) that does not allow fluid to be discharged through the third swing line (630) and the fourth swing line (640) and allows fluid to flow in from the third swing line (630) and the fourth swing line (640), and a seventh swing line (670) that connects the fifth swing line (650) and the sixth swing line (660).

[0067] The above boom line (700) may include a head line (710) that connects the boom main control valve (420, 430) and the head chamber (240), a load line (720) that connects the main control valve and the load chamber (250), a cavitation line (730) that connects the head line (710) and the load line (720), and a cavitation valve (730v) that opens and closes the cavitation line (730).

[0068] Here, the hydraulic circuit may further include a recovery line (Reg) that connects at least one of the swing line (600) and the boom line (700) with the pump line (500).

[0069] Specifically, the recovery line (Reg) may include a swing recovery line (810) that is connected to and shielded from the swing line (600) by the swing direction control valve (690), a swing recovery valve (810v) that opens and closes the swing recovery line (810), a low-pressure accumulator (820) for storing and discharging low-pressure fluid, a low-pressure accumulator line (830) that connects the low-pressure accumulator (820) to the swing recovery line (810), a low-pressure accumulator valve (830v) that opens and closes the low-pressure accumulator line (830), and a make-up line (840) that connects the low-pressure accumulator line (830) to the fifth swing line (650), the sixth swing line (660), and the seventh swing line (670).

[0070] In addition, the above recovery line (Reg) may further include a boom recovery line (910) branched from the cavitation line (730) and a boom recovery valve (910v) for opening and closing the boom recovery line (910).

[0071] In addition, the recovery line (Reg) may further include a first merging line (930) communicating with the first pump line (510), a first merging valve (930v) for opening and closing the first merging line (930), a second merging line (940) communicating with the second pump line (520), a second merging valve (940v) for opening and closing the second merging line (940), and a terminal line (920) for connecting the swing recovery line (810) and the boom recovery line (910) to the first merging line (930) and the second merging line (940).

[0072] In addition, the recovery line (Reg) may further include a high-pressure accumulator (950) for storing and discharging high-pressure fluid, a high-pressure accumulator line (960) for connecting the terminal line (920) and the high-pressure accumulator (950), and a high-pressure accumulator valve (960v) for opening and closing the high-pressure accumulator line (960). Here, the high-pressure accumulator (950) corresponds to the recovery unit.

[0073] In addition, the recovery line (Reg) may further include a tank (T) for storing the discharged fluid, a safety line (970) connecting the terminal line (920) and the tank (T), and a safety valve (970v) for opening and closing the safety line (970).

[0074] Here, the tank (T) can also be communicated with the main control valve through a drain line.

[0075] In addition, the recovery line (Reg) may further include a third junction line (850) branched from the swing recovery line (810) and connected to the first pump line (510), and a third junction valve (850v) for opening and closing the third junction line (850).

[0076] A construction machine including the hydraulic circuit according to this configuration can improve fuel efficiency and / or performance by regenerating fluid in at least one of the swing line (600) and the boom line (700), but a detailed description thereof is omitted.

[0077] However, the swing main control valve (410), the swing direction control valve (690), the swing regeneration valve (810v), the low-pressure accumulator valve (830v), the third merging valve (850v) and the flow path connecting them are included in the swing module (M2), the boom main control valve (420, 430), the cavitation valve (730v), the boom regeneration valve (910v) and the flow path connecting them are included in the boom module (M3), and the first merging valve (930v), the second merging valve (940v), the high-pressure accumulator valve (960v), the safety valve (970v) and the flow path connecting them are included in the regeneration module (M9), and when the regeneration module (M9) is arranged between the swing module (M2) and the boom module (M3), the boom regeneration line (910), the swing regeneration line (810) The euro can be simplified, piping can be simplified, losses can be reduced, and costs can be reduced.

[0078] Meanwhile, the main control valve of the embodiment illustrated in FIGS. 5 and 6 is formed by assembling the swing module (M2), the regenerative module (M9), and the boom module (M3) with the first driving module (M11), the second driving module (M12), the arm module (M4), the bucket module (M5), and the option module (M6), but is not limited thereto. Although not separately illustrated, the swing module (M2), the regenerative module (M9), and the boom module (M3) may be assembled to form one assembly, and the assembly of the swing module (M2), the regenerative module (M9), and the boom module (M3) may be connected to a conventional main control valve. Alternatively, the swing module (M2), the regenerative module (M9), and the boom module (M3) may each be individually connected to a conventional main control valve. That is, a first module connected to the hydraulic generating unit and a second module connected to the swing actuator (100), the boom actuator (200) and the regenerative unit (high-pressure accumulator (950)) and detachably formed on the first module are provided, and the second module includes the regenerative module (M9), the swing module (M2) and the boom module (M3), and the regenerative module (M9), the swing module (M2) and the boom module (M3) may be individually formed to be detachably formed on the first module, or may be formed to be detachably formed on the first module after being assembled together. In this case, there is an advantage in that a conventional main control valve can be used, but there may be a disadvantage in that the swing module (M2) and the boom module (M3) overlap functions with the swing control elements and boom control elements included in the conventional main control valve, resulting in reduced efficiency.

[0079] Here, since the main control valve according to the present invention is formed so that at least some of the plurality of modules are detachable, when the configuration of the plurality of hydraulic operating parts is changed, the main control valve may not be replaced with a new main control valve. That is, the required module may be selected from the plurality of modules, the selected module may be assembled, and the main control valve may be reconfigured. Accordingly, the specifications and functions of the construction machine may be easily changed, and the main control valve may be optimized according to the specifications and functions of the construction machine.

[0080] Meanwhile, in the embodiment illustrated in FIG. 1, as described above, the option module (M6) is mounted on the driving module (M1) on the opposite side of the arm module (M4) with respect to the driving module (M1), the bucket module (M5) is mounted on the option module (M6) on the opposite side of the driving module (M1) with respect to the option module (M6), the dozer module (M7) is mounted on the bucket module (M5) on the opposite side of the option module (M6) with respect to the bucket module (M5), and the articulation module (M8) is mounted on the dozer module (M7) on the opposite side of the bucket module (M5) with respect to the dozer module (M7). However, the present invention is not limited thereto. That is, as illustrated in FIG. 7, the option module (M6) and the bucket module (M5) are formed integrally and mounted on the driving module (M1) on the opposite side of the arm module (M4) with respect to the driving module (M1), and the doser module (M7) and the arti module (M8) are formed integrally and can be mounted on the option module (M6) and the bucket module (M5) as integrally formed on the opposite side of the driving module (M1) with respect to the integrated option module (M6) and the bucket module (M5). Here, the integrated option module (M6) and the bucket module (M5) and the integrated doser module (M7) and the arti module (M8) can each be formed as a so-called 2-spool section module. In this case, the stacking length (upper and lower length in FIG. 7) of the main control valve can be reduced. Accordingly, the problem of the main control valve interfering with surrounding structures or protruding excessively can be resolved not only when the main control valve is mounted on the upper rotor in a state of being stacked in a direction parallel to the ground, but also when the main control valve is mounted on the upper rotor in a state of being stacked in the direction of gravity.

[0081] Here, it may be preferable that the outlet port (D6) of the option module (M6) is formed to face in the opposite direction to the outlet port (D5) of the bucket module (M5), and that the outlet port (D7) of the doser module (M7) is formed to face in the opposite direction to the outlet port (D8) of the arti module (M8), so that the piping is simplified without increasing the stacking direction length. In addition, it may be more preferable that the outlet port (D6) of the option module (M6) faces in the same direction as the outlet port (D7) of the doser module (M7), and that the outlet port (D5) of the bucket module (M5) faces in the same direction as the outlet port (D8) of the arti module (M8). And, when the main control valve is placed at the rear of the boom, considering the arrangement structure of each element, it may be more preferable for the outlet port (D5) of the bucket module (M5) and the outlet port (D8) of the arti module (M8) to face the boom side, and for the outlet port (D6) of the option module (M6) and the outlet port (D7) of the dozer module (M7) to face the rear side of the boom.

[0082] Meanwhile, in the embodiment illustrated in FIG. 7, the option module (M6) and the bucket module (M5) are formed integrally, and the doser module (M7) and the arti module (M8) are formed integrally, but the present invention is not limited thereto. Only the option module (M6) and the bucket module (M5) may be formed integrally, or only the doser module (M7) and the arti module (M8) may be formed integrally. Alternatively, modules other than the option module (M6), the bucket module (M5), the doser module (M7), and the arti module (M8) may be formed integrally. That is, any module among the plurality of modules and an adjacent module thereof may be formed integrally.

[0083] Here, even if the arbitrary module and the adjacent module are not formed integrally, if they are assembled at the same position in the stacking direction such that the outlet port of the arbitrary module faces in one direction and the outlet port of the adjacent module faces in the opposite direction to the one direction, the stacking length of the main control valve can be reduced. However, considering the possibility of leakage, ease of assembly, etc., it may be preferable that the arbitrary module and the adjacent module are formed integrally such that the outlet port of the arbitrary module faces in one direction and the outlet port of the adjacent module faces in the opposite direction to the one direction.

Claims

1. A plurality of hydraulic actuators that convert fluid energy into mechanical energy; and A main control valve comprising a plurality of modules for distributing fluid to the plurality of hydraulic operating parts; A construction machine wherein at least some of the above plurality of modules are formed to be detachable.

2. In paragraph 1, A construction machine in which the plurality of modules are formed to be detachable, and the main control valve is formed by assembling a module selected from among the plurality of modules.

3. In paragraph 2, A construction machine comprising: a driving module for distributing fluid to a driving actuator; a swing module for distributing fluid to a swing actuator; a boom module for distributing fluid to a boom actuator; an arm module for distributing fluid to an arm actuator; and a bucket module for distributing fluid to a bucket actuator.

4. In paragraph 3, A construction machine in which, when the boom module, the arm module, the driving module, and the bucket module are selected, the boom module is positioned on the opposite side of the driving module and the bucket module with respect to the arm module.

5. In paragraph 3, The above plurality of modules further include an optional module for distributing fluid to the attachment, A construction machine in which, when the boom module, the arm module, the driving module, the option module, and the bucket module are selected, the boom module is positioned on the opposite side of the driving module, the option module, and the bucket module with respect to the arm module.

6. In paragraph 4, A construction machine in which the swing module is further selected, wherein the swing module is placed on the same side as the boom module with respect to the arm module.

7. In paragraph 4, The above-mentioned plurality of hydraulic operating units include a regenerative unit for storing and regenerating hydraulic pressure, The above plurality of modules further include a regeneration module that controls the fluid inlet and outlet of the regeneration unit, A construction machine in which the above recovery module is further selected, the recovery module is disposed between the boom module and the swing module and is connected to the boom module and the swing module.

8. In paragraph 7, The above boom module is mounted on the above arm module, The above recovery module is mounted on the boom module on the opposite side of the arm module with respect to the boom module, A construction machine in which the swing module is mounted on the recovery module on the opposite side of the boom module with respect to the recovery module.

9. In paragraph 5, A construction machine in which the above option module and the above bucket module are placed on opposite sides of the arm module with respect to the driving module.

10. In paragraph 9, The above driving module is mounted on the arm module, The above option module is mounted on the driving module on the opposite side of the arm module based on the driving module, A construction machine in which the bucket module is mounted on the optional module on the opposite side of the driving module based on the optional module.

11. In paragraph 9, The above driving module is mounted on the arm module, A construction machine in which the above option module and the bucket module are formed integrally, and the outlet port of the option module is formed to face in the opposite direction to the outlet port of the bucket module, and is mounted on the driving module on the opposite side of the arm module with respect to the driving module.

12. In paragraph 9, The above plurality of modules further include a doser module for dispensing fluid to a doser actuator and an arti module for dispensing fluid to an arti actuator, A construction machine in which, when at least one of the dozer module and the arti module is further selected, the selected one of the dozer module and the arti module is positioned on the opposite side of the driving module with respect to the option module and the bucket module.

13. In paragraph 12, The above driving module is mounted on the arm module, The above option module is mounted on the driving module on the opposite side of the arm module based on the driving module, The above bucket module is mounted on the option module on the opposite side of the driving module based on the option module, The above dozer module is mounted on the bucket module on the opposite side of the option module based on the bucket module, The above-mentioned arti module is a construction machine mounted on the dozer module on the opposite side of the bucket module based on the dozer module.

14. In paragraph 13, The above driving module is mounted on the arm module, The above option module and the bucket module are formed as one piece, and the outlet port of the option module is formed to face in the opposite direction to the outlet port of the bucket module, and is mounted on the driving module on the opposite side of the arm module based on the driving module. A construction machine in which the dozer module and the arti module are formed as one body, and the outlet port of the dozer module is formed to face in the opposite direction to the outlet port of the arti module, and the option module and the bucket module are mounted on the opposite side of the driving module based on the option module and the bucket module.

15. In paragraph 2, A construction machine in which the above-mentioned selected modules are assembled such that the outlet ports of some of the above-mentioned selected modules face one direction and the outlet ports of the remaining of the above-mentioned selected modules face the opposite direction of the one direction.

16. In paragraph 1, The above-mentioned plurality of hydraulic operating units include a swing actuator for rotating an upper rotating body rotatably coupled to a lower driving body capable of moving along the ground, a boom actuator for rotating a boom rotatably coupled to the upper rotating body, and a regeneration unit for storing and regenerating hydraulic pressure. The above plurality of modules include a first module connected to a hydraulic generating unit that generates fluid energy, and a second module connected to the swing actuator, the boom actuator, and the regenerative unit and detachably formed on the first module. The second module comprises a regeneration module that controls the fluid inflow and outflow of the regeneration unit, a swing module that controls the fluid inflow and outflow of the swing actuator and is connected to the regeneration module, and a boom actuator that controls the fluid inflow and outflow of the boom actuator and is connected to the regeneration module. A construction machine in which the above recovery module, the swing module, and the boom module are each individually formed to be detachable from the first module, or are formed to be detachable from the first module after being assembled together.

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