JP2016037716A - Construction machine and piping arrangement thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate piping work and reduce possibilities of a leaked liquid falling on an electric wire.SOLUTION: When installing a control unit 16 as equipment on a right side deck D2 that constitutes an upper frame and connecting chilled water pipes 18, 19 to pipe connection ports P1, P2 formed on a casing 16a of the control unit 16, the chilled water pipes 18, 19 are routed to avoid the unit and made to pass underneath a unit support base 21 and then reach a front side of the unit, and the edge parts of the chilled water pipes are connected to the pipe connection ports P1, P2 after installing the unit.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a construction machine provided with fluid piping for equipment cooling or warm-up, and a piping method therefor.

  The background art will be described using an excavator as an example.

  As shown in FIG. 8, the excavator is mounted on a crawler-type lower traveling body 1 so that an upper swing body 2 is pivotable about an axis perpendicular to the ground, and an upper serving as a base of the upper swing body 2 Various facilities and equipment such as a cabin 4 are mounted on the frame 3, and a work attachment A including a boom 5, an arm 6, and a bucket 7 is mounted on the front portion of the upper frame.

  In this specification, the position of the cabin 4 is defined as the left front portion, and the “front-rear” and “left-right” directions are referred to based on this position.

  As shown in detail in FIG. 9, the upper frame 3 includes a center section C having a pair of left and right vertical plates 8, 8 serving both as a reinforcing member and an attachment mounting member, and side decks provided on the left and right sides of the center section C. D1 and D2, and an engine 9 as a power source is installed at the rear of the center section C.

  Here, for example, in a hybrid excavator, a generator motor 10 as a device for performing a generator action and a motor action is arranged side by side with the hydraulic pump 11 on the right side of the engine 9, for example.

  On the left side of the engine 9, in addition to the radiator 12 for cooling the engine and the cooling fan 13, a cooler 14 for cooling the equipment and a cooling pump 15 are installed.

  On the other hand, in the right side deck D2, a control unit (inverter) 16 for controlling the operation of the generator motor 10 and a power storage device (not shown) as a hybrid power source are arranged in a vertical stack with the control unit 16 facing upward, for example. And a tank (for example, a fuel tank) 17 is installed behind the tank.

  The power storage device may be disposed at a position different from the control unit 16, or when a hydraulic oil tank is installed instead of the fuel tank 17, or both tanks are installed side by side in the front-rear or left-right direction. In some cases.

  Further, there is a case where a turning electric motor as another turning device as a turning drive source is installed in the substantially central portion of the center section C.

  In such a hybrid excavator, wires (such as a power cable for transmitting / receiving power and a signal cable for exchanging control signals between devices including the hybrid motor (the generator motor 10, the control unit 16, and the power storage device) (illustrated). Not connected) (see Patent Document 1).

  In addition, since these devices require cooling and warm-up, as shown in Patent Document 2, the devices, the device, the cooler 14, and the cooling pump 15 are fluid pipes (hereinafter, including embodiments of the present invention). In the case of a water pipe using water as a cooling / warming-up medium).

  In FIG. 9, as an example of the piping, among the water pipes, the in-pipe 18 flowing into the control unit 16 is indicated by a thick line with a black arrow, and the out-pipe 19 flowing out from the control unit 16 is indicated by a thick line with a white arrow. Show.

  The in-pipe 18 is routed through a path of the cooler 14, the generator motor 10, and the control unit 16.

  The out pipe 19 is routed through a path of the control unit 16 -cooling pump 15 -cooler 14.

  The left and right vertical plates 8 and 8 are provided with a plurality of through holes (collected with a collective symbol “20”) through which the electric wires and pipes 18 and 19 are passed at appropriate positions.

JP 2012-184586 A JP2012-154092A

  Thus, in the hybrid excavator in which the water piping is routed, there has been a problem regarding piping around the equipment. The control unit 16 will be described as an example.

  The control unit 16 includes a rectangular casing 16a that is supported by a unit support 21 and a mount member (not shown) on the right side deck D2, and has an in-pipe connection port P1 and a left side on the right side of the casing 16a. Out piping connection port P2 is provided on the surface.

  Both in and out pipes (hereinafter sometimes referred to collectively as “water pipes”) 18 and 19 are passed between the control unit 16 and the right vertical plate 8 as shown in FIG. From here, it goes around to the right side surface via the front side of the unit and is connected to the in-pipe connection port P1, and the out-pipe 19 is connected to the out-pipe connection port P2 as it is.

  According to such a pipe structure, both the in and out pipes 18 and 19 must be routed in the originally narrow space, such as between the right vertical plate 8 and the control unit 16, so that basically the pipes are installed. The work was troublesome.

  Further, as a procedure for installing the control unit 16 and piping, the control unit 16 is installed first, and both the in and out pipes 18 and 19 are later connected and connected to the unit 16 (“post piping method”). ), The control unit 16 gets in the way, making piping work more difficult.

  On the other hand, the pipes 18 and 19 are temporarily placed on an avoidance route avoiding the control unit 16, and after the control unit 16 is installed, the route is returned to the main route and connected to the connection ports P1 and P2 (“pipe temporary placement method”). )), Compared to the post-piping method, the piping work is almost completed with the flexibility before installing the unit, so the piping work efficiency is good, but the pipes 18 and 19 are temporarily fixed to the avoidance route. The troublesome work of releasing the temporary fixing after the unit installation is added, so the troublesomeness of the piping work cannot be solved.

  In addition, when water leaks from the water pipes 18 and 19 as an adverse effect of the cable and the water pipes 18 and 19 being mixed and wired, the water pipe is higher than the electric wire, There was a high possibility that the leaked water would fall on the lower electric wire, and there was a problem with safety.

  Therefore, the present invention provides a construction machine that can facilitate piping work and has a low possibility that the leaked fluid will fall on an electric wire even if a fluid leak occurs, and a piping method therefor.

  As means for solving the above problems, in the present invention (piping method), a pipe connection port provided with equipment installed on the equipment support base, and a cooling or warm-up fluid pipe connected to the casing of this equipment A piping method for a construction machine, wherein the fluid piping is routed by a device avoidance route that passes under the device support base and the tip side reaches the outer peripheral side of the device; After being installed on the support base, the tip side portion of the fluid pipe is connected to the pipe connection port (Claim 1).

  Further, in the construction machine of the present invention, the construction machine is provided with equipment installed on the equipment support base, and the casing of this equipment is provided with a pipe connection port to which a cooling or warm-up fluid pipe is connected. The fluid pipe is connected to the pipe connection port via a device avoidance route that passes under the device support base and the tip side reaches the outer periphery of the device (claim 2).

  According to this construction machine and its piping method, the “temporary piping method” in which piping is installed before the equipment is installed is basically compared to the “post piping method” in which piping is performed after the equipment is installed. Efficiency is good.

  Moreover, since the piping is provided below the device support base so as not to interfere with the installation of the device, there is no need for temporary fixing.

  Moreover, since the space below the device support base is originally a dead space and a sufficiently wide space, it is not necessary to secure a new space, and the piping itself is simplified.

  In addition, the pipe tip side part that passes under the equipment support base and reaches the equipment outer peripheral side is connected to the equipment, that is, the piping can be routed from the outside of the equipment with a wide opening, so the connection work Will also be easier.

  On the other hand, since the pipe is passed through a low place below the equipment support base, most of this pipe is positioned lower than the electric wire, so even if fluid leaks from the pipe, the leaked fluid Is less likely to fall on the wire.

  In this case, it is desirable to provide the connection terminal to which the electric power or signal wire is connected to the casing of the device at a position higher than the pipe connection port.

  In this way, the entire length of the electric wire can be routed higher than the fluid piping, so that the possibility that the electric wire is affected by the leakage fluid is further reduced.

  In addition, the fluid pipe is connected to the main body part that passes under the equipment support base and reaches the outer periphery of the equipment, the front end side part that is separate from the main body part, and the main body and both front end parts. It is preferable that the end of the tip side portion is connected to the pipe connection port.

  According to this configuration, the front end side portion is pre-connected to the device, assembled in a so-called sub-assembly state, and after the device is installed, the front end side portion is connected to the main body portion by a joint where the space is wide. As a result, the efficiency of the piping work can be further increased.

  In particular, it is advantageous when the pipe connection port is in a narrow space that is difficult to connect after installation of the equipment, for example, between the vertical plate and the equipment.

  In the present invention, a lower traveling body and an upper revolving body mounted on the lower traveling body so as to be rotatable are provided, and an upper frame as a base of the upper revolving body is provided with side decks on both right and left sides of the center section. In the construction machine in which the equipment is installed on the left or right side deck by the equipment support base, the beam material constituting the side deck on which the equipment is installed and at least one of the equipment support base, It is desirable to provide a pipe lead-out hole that leads the leading end side of the fluid pipe to the outer peripheral side of the device.

  In this way, in a construction machine that supports equipment on the side deck of the upper frame via the equipment support base, the piping is connected to the equipment support base through the pipe lead hole provided in at least one of the beam material of the side deck and the equipment support base. By adopting a configuration that leads from below to the outer peripheral side of the device, it becomes more desirable in terms of space utilization efficiency and work efficiency.

  According to the present invention, piping work can be facilitated, and even if a fluid leak occurs, the possibility that the leaked fluid falls on the electric wire is low, and safety can be improved.

It is a top view which shows the upper frame in the hybrid shovel concerning embodiment of this invention, its apparatus arrangement | positioning, and a piping state. FIG. 2 is a partially enlarged view of FIG. 1. It is a perspective view which shows the specific structure of the FIG. 2 part. It is the same top view. It is the VV line expanded sectional view of FIG. FIG. 6 is an enlarged sectional view taken along line VI-VI in FIG. 4. FIG. 3 is a view corresponding to FIG. 2 for explaining a procedure for connecting a water pipe to the control unit. 1 is a schematic side view of a hybrid excavator to which the present invention is applied. It is a top view which shows the upper frame in a hybrid shovel, and its apparatus arrangement | positioning.

  An embodiment of the present invention will be described with reference to FIGS.

  In the embodiment, a hybrid excavator is applied in accordance with the description of the background art.

  In the embodiment, the following points are the same as the prior art shown in FIGS.

  (i) The upper frame 3 serving as the base of the upper swing body is provided with a center section C having a pair of left and right vertical plates 8 and 8 serving both as a reinforcing member and an attachment mounting member, and on both left and right sides of the center section C. It is composed of side decks D1 and D2 which are beam structures, and an engine 9 as a power source is installed at the rear of the center section C.

  (ii) As a device, for example, on the right side of the engine 9, a generator motor 10 that performs a generator action and a motor action is arranged side by side with the hydraulic pump 11, and these are driven by the engine 9.

  (iii) On the left side of the engine 9, in addition to the engine cooling radiator 12 and the cooling fan 13, a device cooling cooler 14 and a cooling pump 15 are installed.

  (iv) In the right side deck D2, as other devices, a control unit (inverter) 16 that controls the operation of the generator motor 10 and a power storage device that is a hybrid power source (not shown) are provided in an upper and lower stacked arrangement at the front. In addition, a tank (for example, a fuel tank) 17 is installed behind the tank.

  (v) A turning electric motor as a turning drive source may be installed at a substantially central portion of the center section C.

  (vi) The devices (the generator motor 10, the control unit 16, and the power storage device) are connected to each other by electric power or signal wires.

  (vii) Since these devices require cooling and warm-up, the devices and the devices, the cooler 14 and the cooling pump 15 are connected by fluid pipes (water pipes) 18 and 19.

  (viii) Among the water pipes 18 and 19, an in-pipe 18 (indicated by a thick line with a black arrow in FIGS. 1, 2 and 7) 18 flowing into the control unit 16 includes a cooler 14, a generator motor 10, and a control unit 16. The out-pipe 19 (shown by a thick line with a white arrow) that flows out from the control unit 16 is routed through the path of the control unit 16 -cooling pump 15 -cooler 14. .

  (ix) The left and right vertical plates 8 and 8 are provided with a plurality of through-holes (collectively labeled “20”) through which the electric wires and pipes 18 and 19 are passed at appropriate positions.

  (x) The control unit 16 includes a casing 16a having a rectangular shape in plan view supported on the right side deck D2 by a unit support 21 and a mount member (not shown), and an in-pipe connection port P1 on the right side of the casing 16a, for example, A point where an out-pipe connection port P2 is provided on the left side surface.

  (xi) Both in and out pipes (hereinafter sometimes collectively referred to as “water pipes”) 18 and 19 are passed between the control unit 16 and the right vertical plate 8 as shown in FIG. From here, it goes around the right side of the unit via the front side of the unit and is connected to the in-pipe connection port P1, and the out-pipe 19 is connected to the out-pipe connection port P2 as it is.

  In the embodiment, on the premise of the above configuration, both the in and out pipes 18 and 19 pass from the left to the front under the right side deck D2 and the unit support 21 through the pipe through hole 20 of the right vertical plate 8. However, it is routed by a unit avoidance route in which the tip side reaches the outer peripheral side (front) of the control unit 16, that is, a route that does not interfere with the installation of the control unit 16 on the unit support 21.

  Here, of the two water pipes 18 and 19, the in-pipe 18 is entirely configured as a series of integrated pipes, and after the control unit 16 is installed, the tip end portion 18a has a pipe connection port as shown in FIGS. Connected to P1.

  On the other hand, since the pipe connection port P2 faces the left side surface of the casing, that is, the narrow space between the casing 16a and the right vertical plate 8, the front end of the out pipe 19 is directly connected to the pipe connection port P2. It becomes difficult.

  Therefore, with respect to the out pipe 19, a main body portion 19a that passes under the unit support 21 and reaches the front of the unit, a distal end portion 19b that is separate from the main body portion 19a, and both the portions 19a and 19b The distal end portion 19b is pre-assembled in a so-called sub-assembly state into the pipe connection port P2 of the control unit 16.

  The joint 19c may be attached to the distal end portion 19b at the stage of this sub-assembly, or may be attached later.

  And after unit installation, both the parts 19a and 19b are connected by the coupling 19c, and the out piping 19 is comprised.

  In this case, as shown by a two-dot chain line in FIG. 6 and a solid line in FIG. 7, the front end side portion 18 a of the in-pipe 18 and the front end portion of the main body portion 19 a of the out-pipe 19 are not facing forward. After the unit is installed, it is desirable that the unit is folded back and connected to the pipe connection port P1 or the joint 19c.

  As shown in FIGS. 3 and 4, a pipe lead-out hole 23 is provided in the middle portion in the left-right direction of the front beam 22 located in front of the control unit 16 among the beams constituting the right side deck D2. The out pipes 18 and 19 are drawn out from the lower part of the unit support 21 to the front of the unit through the pipe lead-out hole 23.

  On the other hand, as shown in FIGS. 2, 3, and 5, a connection terminal J is provided on the front surface of the casing of the control unit 16, that is, on a surface different from the pipe connection ports P <b> 1 and P <b> 2 for the water pipes 18 and 19. , Both signal cables) 24 are connected to this connection terminal J.

  Here, as shown in FIG. 5, the connection terminal J is provided at a higher position than the pipe connection ports P1 and P2. In FIG. 5, α indicates the amount of displacement in the height direction.

  According to the embodiment, since the “pipe temporary placement method” in which the water pipes 18 and 19 are routed before the unit is installed, the piping work is basically performed in comparison with the “rear piping method” in which the pipes are installed after the unit is installed. Efficiency is good.

  In addition, since the piping is provided below the unit support 21 so as not to interfere with the installation of the unit, the piping 18 and 19 need not be temporarily fixed.

  Moreover, since the space below the unit support 21 is originally a dead space and a sufficiently large space, it is not necessary to secure a new space, and the piping itself is simplified.

  Further, the pipe tip side portions (the tip side portion 18 a of the in-pipe 18 and the main body portion 19 a of the out-pipe 19) that have passed under the unit support 21 and reached the outer periphery of the unit are folded back and connected to the control unit 16. In other words, the piping can be routed from the outside of the wide unit that is open at the periphery, so that the connection work is facilitated.

  From the above points, the piping work for the control unit 16 can be greatly facilitated, and the working efficiency can be increased.

  In addition, since the pipes 18 and 19 are passed through a low place below the unit support 21, most of the pipes 18 and 19 are positioned lower than the electric wires 24. Even if the fluid leaks from the air, the possibility that the leaked fluid falls on the electric wire 24 is reduced.

  In this case, in the embodiment, since the connection terminal J is provided at a position higher than the pipe connection ports P1 and P2 with respect to the casing 16a of the control unit 16, the entire length of the electric wire 24 is higher than the pipes 18 and 19. Can be routed to a place.

  Further, since the connection terminal J is provided on a different surface (front surface) from the pipe connection ports P1 and P2, even if water leaks from the pipe connection part or the pipe nearby, the leaked water is directly connected to the electric wire 24 or There is no possibility of falling on the connection terminal J.

  With these points, the possibility that the electric wire 24 or the connection terminal J is affected by the leakage fluid can be reduced.

  Furthermore, according to the embodiment, the following effects can be obtained.

  (I) A main body portion 19a that passes through the out pipe 19 below the unit support 21 and reaches the outer periphery (front) of the unit; a front end portion 19b that is separate from the main body portion 19a; Since it is configured by a joint 19c that connects the side portions 19a and 19b, and the tip of the tip side portion 19b is connected to the pipe connection port P2, the tip side portion 19b is connected to the control unit 16 as described above. It is assembled in a so-called sub-assembled state that is connected in advance, and after installing the equipment, the tip side portion 19b is connected to the main body portion 19a by a joint 19c in a large space, thereby further improving the efficiency of piping work. Can be increased.

  In particular, in the embodiment, the pipe connection port P2 is advantageous in terms of work because it is in a narrow space between the right vertical plate 8 and the control unit 16 that is difficult to connect after unit installation.

  (II) Since the pipes 18 and 19 are guided to the front of the unit from the lower side of the unit support 21 through the pipe lead holes 24 provided in the beam member 23 of the right side deck D, it is more desirable in terms of space utilization efficiency and work efficiency. It will be a thing.

  (III) Since the connection terminal J is provided on the front side, avoiding the outer side (right side) of the right side deck D2 in the vehicle width direction, the control unit 16 installed on the right side deck D2 should be Even if it comes into contact with an obstacle, the connection terminal J is unlikely to be damaged. For this reason, it is possible to avoid serious troubles such as control stop due to disconnection.

Other embodiments
(1) In the above embodiment, the two water pipes 18 and 19 are drawn out to the front of the unit through the lower part of the unit support 21. However, when there is an empty space other than the front of the unit, the both water pipes 18 and 19 are used. May be pulled out to the empty space side.

  (2) The pipe lead-out hole 23 may be provided in the beam material constituting the right side deck D2 or both the beam material and the unit support base 21.

  (3) In the above embodiment, the control unit 16 and its water pipes 18 and 19 are taken as an example. However, the present invention can also be applied to other equipment and its fluid pipe as in the above embodiment.

  (4) In the above embodiment, only the out pipe 19 is configured by the main body portion 19a, the tip end portion 19b, and the joint 19c, but the in pipe 18 or both the in and out pipes 18 and 19 are configured as described above. May be.

  (5) The present invention is not limited to an excavator, and is not limited to other hybrid construction machines such as a hybrid type dismantling machine or a crusher configured with an excavator as a base body. It can also be applied to an excavator equipped with a lifting magnet device that generates a magnetic force for adsorption and release.

DESCRIPTION OF SYMBOLS 1 Lower traveling body 2 Upper turning body 3 Upper frame C Center section of upper frame D1 Same as left side deck D2 Same as right side deck 10 Generator motor 16 as equipment 16 Control unit 16a Control unit casing P1, P2 Piping connection Port J Connection terminal 18 Water piping that is fluid piping 18 In piping 18a Tip side portion of in piping 19 Out piping of water piping that is fluid piping 19a Out piping main body 19b Same as above, tip side portion 19c Same as above, Joint 21 unit Support stand (equipment support stand)
22 Front beam material composing right side deck 23 Pipe lead-out hole 24 Electric wire

Claims (5)

  A piping method for a construction machine comprising a device installed on a device support and having a piping connection port to which a cooling or warming fluid piping is connected in a casing of the device, wherein the fluid piping is The device is routed by a device avoidance route that passes under the device support base and the tip side reaches the outer peripheral side of the device, and after the device is installed on the device support table, the tip side portion of the fluid piping is A piping method for a construction machine, characterized by being connected to a pipe connection port.   In a construction machine comprising a device installed on a device support base and provided with a pipe connection port to which a cooling or warm-up fluid pipe is connected in a casing of the device, the fluid pipe is connected to the device support base. A construction machine characterized in that it is connected to the pipe connection port via a device avoidance route that passes below the front end and reaches the outer periphery of the device.   The construction machine according to claim 2, wherein a connection terminal to which an electric power or signal wire is connected is provided in a casing of the device at a position higher than the pipe connection port.   A body part that passes the fluid piping below the equipment support base and reaches the outer periphery of the equipment, a tip side part that is separate from the body part, and a joint that connects the body and the tip side parts together The construction machine according to claim 2, wherein the tip of the tip side portion is connected to the pipe connection port.   The upper frame as a base of the upper rotating body is provided with side decks on both the left and right sides of the center section. In a construction machine in which equipment is installed on one of the left and right side decks by the equipment support platform, at least one of the beam material constituting the side deck on which the equipment is installed and the equipment support platform, the tip of the fluid pipe The construction machine according to any one of claims 2 to 4, wherein a piping lead hole is provided to guide the side to the outer peripheral side of the equipment.

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