Construction machine

Abstract

A hydraulic excavator (1) has an upper swing body (3) provided with a heat exchanger chamber (12) and a pump chamber (13) that house first and second antenna devices (24, 27) detached from first and second antenna mounts (25, 28) in a state in which antenna-side cables (26A, 29A) are connected, and first and second antenna holders (30, 33) disposed in the heat exchanger chamber (12) and the pump chamber (13) and holding the first and second antenna devices (24, 27) detached from the first and second antenna mounts (25, 28). A cabin cover (11) is configured to include a left rear side door (16) and a right side door (19) that can open and close to cover the heat exchanger chamber (12) and the pump chamber (13) and can be locked in a state in which the heat exchanger chamber (12) and the pump chamber (13) are closed.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a construction machine equipped with an antenna device. BACKGROUND

[0002] Generally, a hydraulic excavator representing a construction machine is provided with a lower traveling body capable of self-propelling, an upper swing body capable of being swingably provided on the lower traveling body, and a work device provided on a front side of the upper swing body. Here, a hydraulic excavator equipped with two antenna devices on the upper swing body is known. The antenna devices are constituted by, for example, GNSS (Global Navigation Satellite System) antennas such as GPS (Global Position System) antennas, and position information of the hydraulic excavator is measured based on position information of the two antenna devices, and construction management such as excavation work is assisted (see Patent Literature 1).

[0003] However, since the antenna devices are very expensive, in a case where work is performed without using the antenna devices, or in a case where a hydraulic excavator is transported using a transport vehicle, it is necessary to prevent the antenna devices from being damaged by flying stones and the like. Also, in a case where the operation of a hydraulic excavator is stopped, it is necessary to prevent the antenna devices from being stolen. Therefore, in a case where work is performed without using the antenna devices, or in a case where the operation of a hydraulic excavator is stopped, a method of detaching the antenna devices from the vehicle body and storing them in, for example, a cab that can be locked or a warehouse or the like is adopted.

[0004] PRIOR ART DOCUMENTS

[0005] PATENT LITERATURE

[0006] Patent Literature 1: Japanese Patent Application Laid-Open No. 2015-21320 SUMMARY

[0007] However, a cable for connection with a controller is connected to the antenna devices. Therefore, in a case where the antenna devices are detached from the vehicle body and stored in a cab, a warehouse, or the like, work of detaching the cable from the antenna devices is necessary. Also, in a case where the antenna devices stored in a cab or the like are installed on the vehicle body, work of connecting the cable to the antenna devices is necessary. Therefore, there is a problem that the work of detaching the antenna devices from the vehicle body and storing them, and the work of installing the stored antenna devices on the vehicle body are troublesome.

[0008] An object of the present application is to provide a construction machine capable of improving the workability of the work of detaching antenna devices from a vehicle body and storing them, and the work of installing the stored antenna devices on the vehicle body.

[0009] The construction machine of the present application is composed of a self-propelled vehicle body and a work device provided at the front side of the vehicle body, the vehicle body is provided with a vehicle body frame, a cabin cover provided at the vehicle body frame, an antenna mounting member provided at the vehicle body, and an antenna device detachably mounted to the antenna mounting member and connected to a controller via a cable, the construction machine is characterized in that the vehicle body is provided with an antenna storage chamber provided in the cabin cover, which stores the antenna device detached from the antenna mounting member in a state where the cable is connected, and an antenna holding member provided in the antenna storage chamber, which holds the antenna device detached from the antenna mounting member, and the cabin cover is configured to include a door which can open and close to cover the antenna storage chamber and can be locked in a state where the antenna storage chamber is closed.

[0010] According to the present application, the antenna device can be stored in the antenna storage chamber in a state where the cable is connected, and can be mounted to the vehicle body in a state where the cable is connected. Therefore, the workability of the work of detaching the antenna device from the vehicle body and storing it, and the work of mounting the stored antenna device to the vehicle body can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a left view of a hydraulic excavator showing an embodiment of the present application.

[0012] Figure 2 is a right view of the hydraulic excavator.

[0013] Figure 3 is a plan view of the hydraulic excavator viewed from above.

[0014] Figure 4 is a perspective view showing a state where the first antenna device is stored in the heat exchanger chamber.

[0015] Figure 5 is a left side surface of a state where the first antenna device is stored in the heat exchanger chamber viewed from the left side in a state where the left side door is detached.

[0016] Figure 6 is an exploded perspective view showing a state where the first antenna device is held by the first antenna holding member.

[0017] Figure 7 is a perspective view showing the antenna-side cable to which the annular cable protector is mounted.

[0018] Figure 8 is a perspective view showing the annular cable protector in a unitary manner.

[0019] Figure 9 is a plan view of a state where the annular cable protector is inserted into the cutout groove of the cabin cover viewed from above.

[0020] Figure 10 is a perspective view showing a state in which the pump chamber accommodates the second antenna device.

[0021] Figure 11 is a perspective view showing the C-shaped cable protector of the second embodiment in a single body.

[0022] Figure 12 is a plan view of a state in which the C-shaped cable protector, which is inserted into a cutout groove of a cabin cover, passes an antenna-side cable, as viewed from above. DETAILED DESCRIPTION

[0023] Hereinafter, with the case where the hydraulic excavator is applied as an example, the hydraulic excavator will be described with reference to the drawings. Figures 1 to 12 An engineering machine of an embodiment of the present application will be described in detail. Furthermore, in the embodiment, a travel direction of a hydraulic excavator will be described as a front-rear direction, and a direction orthogonal to the travel direction of the hydraulic excavator will be described as a left-right direction.

[0024] Figures 1 to 10 A first embodiment of the present application will be described. A hydraulic excavator 1, which is a representative engineering machine, is configured to include a crawler-type lower traveling body 2 that is self-propelled in a front-rear direction, an upper swing body 3 that is swingably mounted on the lower traveling body 2, and a work device 4 that is provided on a front side of the upper swing body 3. The lower traveling body 2 and the upper swing body 3 constitute a vehicle body of the hydraulic excavator 1. The hydraulic excavator 1 travels in a work site by the lower traveling body 2, swings the upper swing body 3, and performs a luffing motion of the work device 4, thereby performing a digging work of sand, and the like.

[0025] The work device 4 is configured to include a boom 4A that is luffably mounted on a front side of a swing frame 5 described below, a jib 4B that is turnably mounted on a front end of the boom 4A, and a bucket 4C that is turnably mounted on a front end of the jib 4B. Furthermore, the work device 4 has a boom cylinder 4D that drives the boom 4A, a jib cylinder 4E that drives the jib 4B, and a bucket cylinder 4F that drives the bucket 4C.

[0026] The upper swing body 3 is swingably provided on the lower traveling body 2. The upper swing body 3 is configured to include the swing frame 5 described below, a counterweight 6, an engine 7, a cab 10, a cabin cover 11, a working oil tank 22, a fuel tank 23, and the like.

[0027] A swing frame 5, which is a vehicle body frame, constitutes a base of the upper swing body 3. The swing frame 5 is configured to include a bottom plate 5A, left and right longitudinal plates 5B and 5C, left and right side frames 5D and 5E. The left and right longitudinal plates 5B and 5C are erected on the bottom plate 5A and extend in the front-rear direction with a predetermined interval in the left-right direction. The left and right side frames 5D and 5E are disposed on the left and right sides of the bottom plate 5A and extend in the front-rear direction. The base ends of the boom 4A and the boom cylinder 4D are rotatably attached to the front sides of the left and right longitudinal plates 5B and 5C.

[0028] A counterweight 6 is provided on the rear end side of the swing frame 5. The counterweight 6 is formed as a weight having a circular arc-shaped rear surface and achieves weight balance with the working device 4.

[0029] An engine 7, which is a prime mover, is located on the front side of the counterweight 6 and mounted on the rear side of the swing frame 5. The engine 7 is disposed in a transverse position extending in the left-right direction. A hydraulic pump 8 is attached to the right side of the engine 7. The hydraulic pump 8, which is driven by the engine 7, discharges hydraulic oil stored in a hydraulic oil tank 22 to hydraulic actuators such as travel motors of the lower travel body 2, a swing motor (not shown) of the upper swing body 3, and each cylinder 4D, 4E, and 4F of the working device 4. In addition, as the prime mover, an electric motor or a hybrid prime mover in which an engine and an electric motor are combined can be used.

[0030] A heat exchanger 9 is located on the left side of the engine 7 and mounted on the swing frame 5. The heat exchanger 9 is configured to include a radiator that cools engine coolant, an oil cooler that cools hydraulic oil, and the like. The heat exchanger 9 releases heat of the engine coolant, the hydraulic oil, and the like to cooling air by being supplied with cooling air (arrow F) introduced into a cab cover 11 by a cooling fan 7A of the engine 7. Figure 3

[0031] A cab 10 is located on the left side of the left longitudinal plate 5B of the swing frame 5 and provided on the left front side of the swing frame 5. The cab 10 is formed as a box that divides an operation room and has a driver's seat (not shown) inside in which an operator sits. Further, a travel control lever pedal device (not shown) that controls travel operation of the hydraulic shovel 1 is provided on the front side of the driver's seat, and an operation lever device (not shown) that controls swing operation of the upper swing body 3 and operation of the working device 4 is provided on each of the left and right sides of the driver's seat.

[0032] The cab cover 11 is located on the front side of the counterweight 6 and provided on the swing frame 5. The cab cover 11 is supported by a left holding member 15, a right holding member 18, and the like provided on the swing frame 5 and configured to include a left rear side door 16, a left front side door 17, a right side door 19, an upper cover 20, and an engine cover 21.

[0033] ​The housing cover 11 covers the onboard equipment such as the engine 7, the hydraulic pump 8, and the heat exchanger 9 mounted on the revolving frame 5. A prime mover room (not shown) housing the engine 7, a heat exchanger room 12 housing the heat exchanger 9, and a pump room 13 housing the hydraulic pump 8 are formed in the housing cover 11. In addition, a partition member (firewall) 14 is provided in the housing cover 11 to separate the prime mover room and the pump room 13 (see FIG. Figure 10 ).

[0034] like Figure 4 As shown, a plurality of left holding members 15 are erected at intervals in the front-to-rear direction on the left side of the revolving frame 5. The left holding members 15 include a left rear holding member 15A disposed adjacent to the left front side of the counterweight 6, a left intermediate holding member 15B disposed in front of the left rear holding member 15A, and a left front holding member (not shown) disposed in front of the left intermediate holding member 15B.

[0035] The left rear side door 16 constituting the cabin cover 11 is supported by the left rear holding member 15A via a hinge mechanism (not shown). The left rear side door 16 can be opened and closed from the left side to cover the heat exchanger chamber 12 by rotating in the front-back direction or the left-right direction (horizontally) around the hinge mechanism. That is, the left rear side door 16 is in the open position ( Figure 4 The heat exchanger chamber 12 is rotated between the closed position and the closed position.

[0036] The left front side door 17 is supported by the left front holding member via a hinge mechanism (neither of which is shown in the figure) so as to be rotatable in the front-back direction or the left-right direction (horizontal direction). The left front side door 17 can be opened and closed from the left side to cover the tool room (not shown) arranged on the front side of the heat exchanger chamber 12. A locking mechanism 17A is provided on the left front side door 17. By locking the locking mechanism 17A, the left front side door 17 is kept in the closed position. Here, when both the left front side door 17 and the left rear side door 16 are in the closed position ( Figure 1 , the rear end of the left front side door 17 is covered by the front end of the left rear side door 16 (the two overlap). Therefore, when both the left front side door 17 and the left rear side door 16 are in the closed position, the left rear side door 16 cannot be opened unless the locking mechanism 17A of the left front side door 17 is unlocked. Therefore, the left rear side door 16 is locked in the closed position by the locking mechanism 17A of the left front side door 17.

[0037] like Figure 10 As shown, a plurality of right holding members 18 are erected at intervals in the front-to-rear direction on the right side of the revolving frame 5. The right holding members 18 include a right rear holding member 18A disposed adjacent to the right front side of the counterweight 6, and a right front holding member 18B disposed in front of the right rear holding member 18A.

[0038] The right side door 19 constituting the cabin cover 11 is supported by the right rear holding member 18A via a hinge mechanism (not shown). The right side door 19 is capable of opening and closing the pump chamber 13 from the right side by rotating in the front-rear direction or the left-right direction (horizontal direction) about the hinge mechanism. That is, the right side door 19 is displaced in rotation between an open position that opens the pump chamber 13 and a closed position that closes the pump chamber 13. The right side door 19 is held in the closed position by locking the locking mechanism 19A.

[0039] The upper cover 20 extends in the horizontal direction between the upper ends of the left rear side door 16 and the left front side door 17 and the upper end of the right side door 19. In the upper cover 20, a maintenance opening (not shown) is formed in a manner to be positioned on the upper side of the engine 7, through which a maintenance work is performed on the engine 7 and the like.

[0040] The engine cover 21 as a prime mover cover is provided on the upper cover 20 in a state of covering the engine 7 from above. The engine cover 21 extends in the left-right direction in a state of rising upward from the upper cover 20, and blocks the maintenance opening formed in the upper cover 20. The rear end side of the engine cover 21 is installed to a holding member (none shown) via a hinge mechanism, and the front end side is displaced in rotation in the up-down direction about the hinge mechanism. Thus, the engine cover 21 is capable of opening and closing with respect to the upper cover 20 between an open position that opens the maintenance opening and a closed position that closes the maintenance opening. The range in the upper cover 20 that is forward of the engine cover 21 becomes a work standing place 20A. The work standing place 20A is formed as a standing place when a worker opens the engine cover 21 to perform a maintenance work on the engine 7 and the like.

[0041] The working oil tank 22 is provided on the swing frame 5 in a manner to be positioned on the right side of the right longitudinal plate 5C of the swing frame 5 and on the front side of the hydraulic pump 8. The working oil tank 22 stores working oil that is supplied to hydraulic actuators such as travel motors of the lower traveling body 2, a swing motor of the upper swing body 3, and each cylinder 4D, 4E, 4F of the work device 4. The upper surface of the working oil tank 22 forms the same plane as the upper cover 20.

[0042] The fuel tank 23 is provided in a manner to be positioned on the right side of the right longitudinal plate 5C of the swing frame 5 and adjacent to the front side of the working oil tank 22. The fuel tank 23 stores fuel that is supplied to the engine 7. The upper surface of the fuel tank 23 forms the same plane as the upper cover 20.

[0043] Next, the first antenna device 24 and the second antenna device 27 mounted on the upper swing body 3 will be described.

[0044] The first antenna device 24 is provided on one side in the left-right direction of the upper swing body 3, specifically, on the left side of the counterweight 6. The second antenna device 27 is provided on the other side in the left-right direction of the upper swing body 3, specifically, on the right front side of the upper cover 20 which becomes the upper side of the pump chamber 13. The first antenna device 24 and the second antenna device 27 are constituted by, for example, GNSS antennas, and are connected to a controller (not shown) which is disposed inside the cabin cover 11.

[0045] The first antenna device 24 is detachably attached to a first antenna attachment member 25 which is fixed to the counterweight 6. The first antenna attachment member 25 has a fixed pedestal 25A which is fixed to the upper surface of the counterweight 6, and a rod-shaped support mast 25B which extends upward in a vertical direction from the fixed pedestal 25A. A fitting hole 24A (see FIG. 6) which extends in the vertical direction is formed on the lower side of the first antenna device 24. Figure 6 ) The first antenna device 24 is fixed by a bolt or the like in a state in which the fitting hole 24A is fitted to the front end of the support mast 25B of the first antenna attachment member 25.

[0046] A first cable 26 electrically connects the controller which is disposed inside the cabin cover 11 and the first antenna device 24. The controller measures position information of the hydraulic excavator 1 based on signals from the first antenna device 24 and the second antenna device 27, and controls the operation of the hydraulic excavator 1.

[0047] Here, the first cable 26 is constituted by an antenna-side cable 26A which is connected to the first antenna device 24, and a controller-side cable (not shown) which is connected to the controller. The antenna-side cable 26A is disposed outside the upper swing body 3, and the controller-side cable is disposed inside the cabin cover 11. One end 26B of the antenna-side cable 26A is detachably connected to the first antenna device 24, and an antenna-side connector 26C (see FIG. 6) is provided on the other end of the antenna-side cable 26A. Figure 7 The other end of the controller-side cable is connected to the controller, and the controller-side connector (not shown) which is disposed on the upper cover 20 is connected to the other end of the controller-side cable. Thus, the first antenna device 24 and the controller are electrically connected via the first cable 26 by connecting the antenna-side connector 26C which is provided on the antenna-side cable 26A and the controller-side connector which is disposed on the upper cover 20.

[0048] On the other hand, the second antenna device 27 is detachably mounted on a second antenna mounting member 28 fixed to the right front side of an upper cover 20 which is above the pump chamber 13. The second antenna mounting member 28 has a fixed pedestal 28A fixed to the upper surface of the upper cover 20 and a rod-shaped support mast 28B extending upward from the fixed pedestal 28A. A fitting hole (not shown) identical to that of the first antenna device 24 is formed in the lower side of the second antenna device 27, and the second antenna device 27 is fixed with a bolt or the like in a state where the fitting hole is fitted with the front end of the support mast 28B.

[0049] A second cable 29 electrically connects a controller (not shown) disposed in the cabin cover 11 and the second antenna device 27. As shown in Figure 10 , the second cable 29 is composed of an antenna-side cable 29A connected to the second antenna device 27 and a controller-side cable 29B connected to the controller. The antenna-side cable 29A is disposed outside the upper body 3, and the controller-side cable 29B is mainly disposed inside the cabin cover 11.

[0050] One end 29C of the antenna-side cable 29A is detachably connected to the second antenna device 27, and an antenna-side connector 29D is provided at the other end of the antenna-side cable 29A. One end of the controller-side cable 29B is connected to the controller, and a controller-side connector 29E is provided at the other end of the controller-side cable 29B. The controller-side connector 29E is disposed on the upper cover 20 adjacent to the fixed pedestal 28A of the second antenna mounting member 28. Therefore, the second antenna device 27 and the controller are electrically connected via the second cable 29 by connecting the antenna-side connector 29D provided on the antenna-side cable 29A and the controller-side connector 29E.

[0051] The first antenna storage chamber is formed by the heat exchanger chamber 12. As shown in Figure 4 , the heat exchanger chamber 12 stores the first antenna device 24 detached from the first antenna mounting member 25 in a state where the antenna-side cable 26A of the first cable 26 is connected. The heat exchanger chamber 12 is opened by opening the left rear side door 16 and is closed by closing the left rear side door 16, and is locked by the locking mechanism 17A of the left front side door 17.

[0052] A first antenna holding member 30 is provided in the heat exchanger chamber 12 which is the first antenna storage chamber. As shown in Figures 4 to 6As shown, the first antenna holder 30 is installed to the left rear holding member 15A supporting the left rear side door 16, and holds the first antenna device 24 detached from the first antenna mounting member 25. The first antenna holder 30 is configured to include a base member 30A bent into an L shape, and a cylindrical protruding member 30B provided to an upper surface of the base member 30A and protruding upward in the vertical direction. The protruding member 30B has an outer diameter dimension equal to that of the support mast 25B of the first antenna mounting member 25. The first antenna holder 30 is disposed in the heat exchanger chamber 12 by fixing the base member 30A to an upper side portion of the left rear holding member 15A using a bolt 30C. Thus, by fitting the fitting hole 24A of the first antenna device 24 to the protruding member 30B of the first antenna holder 30, the first antenna device 24 can be stably held in the heat exchanger chamber 12.

[0053] Here, as shown in FIG. 6, in a state where the first antenna holder 30 holds the first antenna device 24, the first antenna device 24 is provided at a position not overlapping the heat exchanger 9 in the left-right direction indicated by the arrow F in the flow direction of the cooling air supplied to the heat exchanger 9. Figure 5 Figure 3 Thus, even in a case where the first antenna device 24 is held by the first antenna holder 30 in the heat exchanger chamber 12, it is possible to suppress a case where the cooling air supplied to the heat exchanger 9 is obstructed by the first antenna device 24, and thus it is possible to supply sufficient cooling air to the heat exchanger 9.

[0054] A cutout groove 31 as a cable insertion portion is provided to the left end edge 20B side of the upper cover 20. When the first antenna device 24 is accommodated in the heat exchanger chamber 12, the cutout groove 31 is inserted with the first cable 26 (antenna side cable 26A) connected to the first antenna device 24. Thus, it is possible to accommodate the first antenna device 24 in the heat exchanger chamber 12 in a state where the antenna side cable 26A is connected to the first antenna device 24. As shown in FIG. 7, the cutout groove 31 has a larger opening width of the opening end 31A of the left end edge 20B of the upper cover 20 in a state where the left rear side door 16 is closed. The antenna side cable 26A is smoothly guided to the cutout groove 31 through the opening end 31A. Figure 6

[0055] The cable protector 32 is provided between the antenna side cable 26A of the first cable 26 and the cutout groove 31 in a state where the first antenna device 24 is held by the first antenna holder 30. As shown in FIG. 8, the cable protector 32 is provided to the left end edge 20B side of the upper cover 20. The cable protector 32 is provided to the left end edge 20B side of the upper cover 20 in a state where the left rear side door 16 is closed. The cable protector 32 is provided to the left end edge 20B side of the upper cover 20 in a state where the left rear side door 16 is closed. Figure 7 Figure 8 ​​​As shown, the cable protector 32 is an annular body that attaches to the antenna-side cable 26A and is formed from an elastic material such as rubber. The inner circumference of the cable protector 32 forms a cable insertion hole 32A, through which the antenna-side cable 26A is inserted axially. A small-diameter constriction 32B is formed on the outer circumference of the cable protector 32. This constriction 32B engages with the notch 31 of the upper mask 20.

[0056] That is, the cable protector 32 is installed in advance on the antenna side cable 26A, and when the first antenna device 24 is held by the first antenna holder 30, as shown in FIG. Figure 9 As shown, the cable protector 32 attached to the antenna cable 26A is engaged with the notch 31 of the upper cover 20. This prevents the antenna cable 26A from being damaged by friction with the notch 31, and protects the antenna cable 26A.

[0057] The second antenna storage chamber is formed by the pump chamber 13. Figure 10 As shown, the pump chamber 13 houses the second antenna device 27 removed from the second antenna mount 28, connected to the antenna-side cable 29A of the second cable 29. The pump chamber 13 is opened by opening the right side door 19, sealed by closing the right side door 19, and locked by the locking mechanism 19A.

[0058] The second antenna holder 33 is provided in the pump chamber 13 serving as the second antenna storage chamber. Figure 10 As shown, the second antenna holder 33 is attached to the partition member 14 that separates the engine compartment from the pump compartment 13, and holds the second antenna assembly 27 removed from the second antenna mounting member 28. Similar to the first antenna holder 30, the second antenna holder 33 comprises a base member 33A bolted to the partition member 14 and a protruding member (not shown) provided on the base member 33A. Furthermore, by engaging the mating hole (not shown) of the second antenna assembly 27 with the protruding member of the second antenna holder 33, the second antenna assembly 27 can be stably held within the pump compartment 13.

[0059] A cutout groove 34 serving as a cable insertion portion is provided on the right end edge 20C of the upper cover 20. When the second antenna device 27 is housed in the pump chamber 13, the second cable 29 (antenna-side cable 29A) connected to the second antenna device 27 is inserted through the cutout groove 34. This allows the second antenna device 27 to be housed in the pump chamber 13 with the antenna-side cable 29A connected to the second antenna device 27. When the right side door 19 is closed, the cutout groove 34 has an open end 34A that opens at the portion where the upper cover 20 abuts the upper end edge 19B of the right side door 19, that is, at the right end edge 20C of the upper cover 20. The antenna-side cable 29A is smoothly guided to the cutout groove 34 through the open end 34A.

[0060] A cable protector 32 is provided between the antenna-side cable 29A of the second cable 29 and the notch 34. The cable protector 32 is pre-attached to the antenna-side cable 29A. With the second antenna assembly 27 held by the second antenna holder 33, the cable protector 32 attached to the antenna-side cable 29A engages with the notch 34 of the upper cover 20. This prevents damage to the antenna-side cable 29A from rubbing against the notch 34, thus protecting the antenna-side cable 29A.

[0061] The hydraulic excavator 1 according to the present embodiment has the above-described configuration, and the operation of the hydraulic excavator 1 will be described below.

[0062] When the hydraulic excavator 1 is used for work, if the position information of the hydraulic excavator 1 is required, such as Figures 1 to 3 As shown, the first antenna device 24 is mounted on the first antenna mounting member 25, and the second antenna device 27 is mounted on the second antenna mounting member 28. With the first and second antenna devices 24 and 27 thus mounted on the upper slewing body 3, the operator enters the cab 10, sits in the driver's seat (not shown), and starts the engine 7. In this state, the hydraulic excavator 1 can be driven toward the work site by operating the travel control lever pedal device (not shown). Furthermore, by operating the operating lever device (not shown), the upper slewing body 3 can be rotated while the working device 4 performs excavation work, etc.

[0063] When excavating using the work implement 4, the first antenna 24 and the second antenna 27 receive the position information of the hydraulic excavator 1 from a satellite and transmit this position information to a controller (not shown). The controller measures the position information of the hydraulic excavator 1 based on the position information from the first antenna 24 and the second antenna 27. The controller then compares the position information of the hydraulic excavator 1 with the position information of the front end of the work implement 4 obtained from sensors mounted on the work implement 4, terrain data, and target terrain data to perform calculations for working on the target terrain. The controller then displays the work information (calculation results) on a monitor within the operator's cab 10, for example. Thus, the operator can control the movement of the work implement 4 using a joystick while confirming the work information displayed on the monitor, thereby enabling work on the target terrain.

[0064] After stopping the hydraulic excavator 1, the first antenna device 24 and the second antenna device 27 are removed from the upper slewing body 3 to prevent theft. First, the first antenna device 24 is removed from the support mast 25B of the first antenna mounting member 25 while the first antenna device 24 is connected to one end 26B of the antenna cable 26A.

[0065] On the other hand, the locking mechanism 17A of the left front side door 17 is unlocked, and the left front side door 17 and the left rear side door 16 are moved to the open position. As a result, the heat exchanger chamber 12 is opened, and the first antenna holder 30 is exposed. Figure 6 As shown, fitting hole 24A of first antenna device 24 removed from first antenna mounting member 25 is fitted into protruding member 30B of first antenna holder 30. Thus, first antenna device 24 can be stably held by first antenna holder 30 within heat exchanger chamber 12.

[0066] On the other hand, the midway portion of the antenna cable 26A connected to the first antenna unit 24 is inserted into the notch 31 formed in the left edge 20B of the upper cover 20. This allows the left rear side door 16 to be moved to the closed position to close the heat exchanger chamber 12 without the antenna cable 26A being caught between the left edge 20B of the upper cover 20 and the left rear side door 16. At this time, since the cable protector 32 is attached to the midway portion of the antenna cable 26A, Figure 9 As shown, the constricted portion 32B of the cable protector 32 is engaged with the notch 31. This allows the antenna cable 26A to be positioned relative to the upper cover 20 while preventing friction between the antenna cable 26A and the notch 31 of the upper cover 20.

[0067] Next, the left rear side door 16 is moved to the closed position, and the left front side door 17 is also moved to the closed position, locking the locking mechanism 17A of the left front side door 17. This allows the first antenna device 24, held by the first antenna holder 30, to be stored within the heat exchanger chamber 12, which is sealed by the locked left rear side door 16. This prevents the first antenna device 24 from being damaged by flying rocks or stolen when not in use.

[0068] In this case, if Figure 5 As shown, when the first antenna holder 30 holds the first antenna device 24, the first antenna device 24 is positioned so as not to overlap with the heat exchanger 9 in the direction of flow (left-right direction) of the cooling air supplied to the heat exchanger 9. Therefore, when the hydraulic excavator 1 is operated with the first antenna device 24 housed within the heat exchanger chamber 12, the cooling air supplied to the heat exchanger 9 is not obstructed by the first antenna device 24, and sufficient cooling air can be supplied to the heat exchanger 9.

[0069] Next, when removing the second antenna device 27 , the second antenna device 27 is removed from the support mast 28B of the second antenna mount 28 in a state where the one end 29C of the antenna-side cable 29A is connected thereto.

[0070] On the other hand, the locking mechanism 19A of the right side door 19 is unlocked, and the right side door 19 is moved to the open position. As a result, as shown in FIG. 8, the pump chamber 13 is opened, and the second antenna holder 33 is exposed. Then, the second antenna device 27 detached from the second antenna mount 28 is fitted to the protruding member (not shown) of the second antenna holder 33. As a result, the second antenna device 27 can be stably held by the second antenna holder 33 in the pump chamber 13. Figure 10

[0071] On the other hand, the intermediate portion of the antenna-side cable 29A connected to the second antenna device 27 is inserted into the cutout groove 34 formed in the right end edge 20C of the upper cover 20. As a result, the right side door 19 can be moved to the closed position to close the pump chamber 13 without sandwiching the antenna-side cable 29A between the right end edge 20C of the upper cover 20 and the right side door 19. At this time, the cable protector 32 attached to the intermediate portion of the antenna-side cable 29A is engaged with the cutout groove 34. As a result, the antenna-side cable 29A can be positioned with respect to the upper cover 20 in a state in which the antenna-side cable 29A is prevented from rubbing against the cutout groove 34 of the upper cover 20.

[0072] Then, with the right side door 19 moved to the closed position, the locking mechanism 19A of the right side door 19 is locked. As a result, the second antenna device 27 held by the second antenna holder 33 can be accommodated in the pump chamber 13 blocked by the locked right side door 19. Therefore, during work in which the second antenna device 27 is not used, damage to the second antenna device 27 due to flying stones or theft of the second antenna device 27 can be prevented.

[0073] Thus, according to the hydraulic excavator 1 of the present embodiment, the first antenna device 24 can be detached from the first antenna mount 25 in a state in which the antenna-side cable 26A is connected, and accommodated in the heat exchanger chamber 12, and can be detached from the heat exchanger chamber 12 and attached to the first antenna mount 25. Similarly, the second antenna device 27 can be detached from the second antenna mount 28 in a state in which the antenna-side cable 29A is connected, and accommodated in the pump chamber 13, and can be detached from the pump chamber 13 and attached to the second antenna mount 28.

[0074] ​Therefore, when attaching or detaching first antenna assembly 24 to or from first antenna mount 25, there is no need to connect or disconnect antenna cable 26A to or from first antenna assembly 24. Similarly, when attaching or detaching second antenna assembly 27 to or from second antenna mount 28, there is no need to connect or disconnect antenna cable 29A to or from second antenna assembly 27. This improves workability when removing first antenna assembly 24 or second antenna assembly 27 from first antenna mount 25 or second antenna mount 28 and storing them in heat exchanger chamber 12 or pump chamber 13, and when attaching the stored first antenna mount 25 or second antenna mount 28 to the first antenna mount 25 or second antenna mount 28.

[0075] Next, Figure 11 and Figure 12 A cable protector 35 of a second embodiment is shown. In this embodiment, the cable protector 35 is used instead of the cable protector 32 of the first embodiment.

[0076] The cable protector 35 of the second embodiment is installed between the antenna-side cable 26A connected to the first antenna assembly 24 and the notch 31 of the upper mask 20, and between the antenna-side cable 29A connected to the second antenna assembly 27 and the notch 34 of the upper mask 20. The cable protector 35 is a C-shaped member that fits within the notches 31 and 34 and is formed from an elastic material such as rubber. Specifically, unlike an annular member having a cable insertion hole 35A on the inner circumference and a constricted portion 35B on the outer circumference, the cable protector 35 is formed into an overall C-shape by providing a radial notch 35C.

[0077] The cable protector 35 is pre-attached to the notch 31 by engaging the constricted portion 35B with the notch 31 of the upper cover 20. Therefore, when the first antenna unit 24 is housed in the heat exchanger chamber 12, the midway portion of the antenna-side cable 26A connected to the first antenna unit 24 can be inserted through the notch 35C from the side into the cable insertion hole 35A of the cable protector 35 pre-attached to the notch 31 (see FIG. 1 ). Figure 12 Similarly, when the second antenna device 27 is housed in the pump chamber 13, the midway portion of the antenna-side cable 29A connected to the second antenna device 27 can be inserted laterally through the cutout portion 35C into the cable insertion hole 35A of the cable protector 35 pre-installed in the cutout groove 34.

[0078] Thus, by using the C-shaped cable protector 35 of the second embodiment, the cable protector 35 can be installed between the antenna cable 26A and the cutout groove 31 , thereby improving workability when installing the cable protector 35 between the antenna cable 29A and the cutout groove 34 .

[0079] Thus, in the present embodiment, the upper swing body 3 of the hydraulic excavator 1 is provided with an antenna housing chamber (the heat exchanger chamber 12, the pump chamber 13) and the first antenna holder 30, the second antenna holder 33, in which the antenna housing chamber is provided in the cabin cover 11, houses the first antenna device 24, the second antenna device 27 detached from the first antenna mounting member 25, the second antenna mounting member 28 in a state in which the antenna-side cable 26A, 29A is connected, the first antenna holder 30, the second antenna holder 33 are provided in the heat exchanger chamber 12, the pump chamber 13, hold the first antenna device 24, the second antenna device 27 detached from the first antenna mounting member 25, the second antenna mounting member 28, the cabin cover 11 is capable of covering the heat exchanger chamber 12, the pump chamber 13 in an openable and closable manner, and is configured to include the left rear side door 16, the right side door 19 capable of being locked in a state in which the heat exchanger chamber 12, the pump chamber 13 are closed.

[0080] According to this structure, it is possible to detach the first antenna device 24 from the first antenna mounting member 25 in a state in which the antenna-side cable 26A is connected and house it in the heat exchanger chamber 12, and it is possible to take it out from the heat exchanger chamber 12 and mount it on the first antenna mounting member 25. In addition, it is possible to detach the second antenna device 27 from the second antenna mounting member 28 in a state in which the antenna-side cable 29A is connected and house it in the pump chamber 13, and it is possible to take it out from the pump chamber 13 and mount it on the second antenna mounting member 28. As a result, it is possible to improve the work when detaching the first antenna device 24, the second antenna device 27 from the first antenna mounting member 25, the second antenna mounting member 28 and storing them in the heat exchanger chamber 12, the pump chamber 13, and the work when mounting the stored first antenna mounting member 25, the second antenna mounting member 28 on the first antenna mounting member 25, the second antenna mounting member 28.

[0081] In the embodiment, the cable insertion portion (cutout groove 31, 34) for the antenna-side cable 26A, 29A to pass through when the first antenna device 24, the second antenna device 27 is housed in the heat exchanger chamber 12, the pump chamber 13 is provided in the upper cover 20 or the left rear side door 16, the right side door 19. According to this structure, it is possible to block the heat exchanger chamber 12 in which the first antenna device 24 is housed with the left rear side door 16 without sandwiching the antenna-side cable 26A between the upper cover 20 and the left rear side door 16. In addition, it is possible to block the pump chamber 13 in which the second antenna device 27 is housed with the right side door 19 without sandwiching the antenna-side cable 29A between the upper cover 20 and the right side door 19.

[0082] In the embodiment, the cable insertion portions described above are formed by cutout grooves 31, 34 provided in the upper cover 20 or the left rear side door 16, the upper cover 20 or the right side door 19 in a state where the left rear side door 16, the right side door 19 are closed, and the end portions thereof are open ends 31A, 34A. According to this structure, the antenna-side cables 26A, 29A are inserted in the cutout grooves 31, 34 from the lateral direction through the open ends 31A, 34A in a state where the left rear side door 16, the right side door 19 are opened. Therefore, it is possible to prevent the antenna-side cables 26A, 29A from being pinched between the upper cover 20 and the left rear side door 16, the right side door 19.

[0083] In the embodiment, the antenna-side cables 26A, 29A or the cutout grooves 31, 34 are provided with cable protectors 32 that are fitted to the cutout grooves 31, 34 and protect the antenna-side cables 26A, 29A when the antenna-side cables 26A, 29A are inserted in the cutout grooves 31, 34. According to this structure, it is possible to prevent the antenna-side cables 26A, 29A from being damaged by being rubbed against the cutout grooves 31, 34 by means of the cable protectors 32.

[0084] In the embodiment, the cable protectors 32 are composed of ring-shaped bodies that are attached to the antenna-side cables 26A, 29A, the antenna-side cables 26A, 29A are inserted in the cutout grooves 31, 34 from the axial direction on the inner peripheral side of the cable protectors 32, and the outer peripheral side of the cable protectors 32 is fitted to the cutout grooves 31, 34. According to this structure, it is possible to attach the cable protectors 32 to the antenna-side cables 26A, 29A in advance and attach the cable protectors 32 to the cutout grooves 31, 34.

[0085] In the embodiment, the cable protectors 35 are composed of C-shaped bodies that are attached to the cutout grooves 31, 34, the antenna-side cables 26A, 29A are inserted in the cutout grooves 31, 34 from the radial direction on the inner peripheral side of the cable protectors 35, and the outer peripheral side of the cable protectors 35 is fitted to the cutout grooves 31, 34. According to this structure, it is possible to insert the antenna-side cables 26A, 29A in the cutout grooves 31, 34 on the inner peripheral side of the cable protectors 35 in a state where the cable protectors 35 are attached to the cutout grooves 31, 34 in advance.

[0086] In the embodiment, a heat exchanger chamber 12 that accommodates the heat exchanger 9 mounted on the upper revolving body 3 is provided in the cabin cover 11, and the antenna accommodation chamber described above is formed by the heat exchanger chamber 12. According to this structure, it is possible to accommodate the first antenna device 24 by means of the heat exchanger chamber 12.

[0087] In the embodiment, the first antenna holder 30 is installed to the left rear holding member 15A that supports the cabin cover 11, and the first antenna holder 30 is provided at a position where the first antenna device 24 does not overlap the heat exchanger 9 in the flow direction of the cooling air supplied to the heat exchanger 9 when holding the first antenna device 24. According to this structure, it is possible to suppress the cooling air supplied to the heat exchanger 9 from being obstructed by the first antenna device 24, and thus it is possible to supply sufficient cooling air to the heat exchanger 9.

[0088] In the embodiment, in the cabin cover 11, a partition member 14 that partitions an engine room in which the engine 7 mounted on the upper revolving body 3 is accommodated and a pump room 13 in which the hydraulic pump 8 is accommodated is provided, the above-described antenna accommodating room is formed by the pump room 13, and the second antenna holder 33 is provided to the partition member 14. According to this structure, it is possible to arrange the second antenna holder 33 in the pump room 13 using the partition member 14.

[0089] In the embodiment, the above-described antenna device is composed of the first antenna device 24 arranged on one side in the left-right direction of the upper revolving body 3 and the second antenna device 27 arranged on the other side in the left-right direction of the upper revolving body 3, the above-described antenna accommodating room is composed of a first antenna accommodating room that accommodates the first antenna device 24 and a second antenna accommodating room that accommodates the second antenna device 27, the first antenna accommodating room is formed by the heat exchanger room 12, and the above-described second antenna accommodating room is formed by the pump room 13. According to this structure, it is possible to separately accommodate the first antenna device 24 and the second antenna device 27 that are separately provided to the upper revolving body 3 in the left-right direction using the heat exchanger room 12 and the pump room 13, respectively.

[0090] In the embodiment, the first antenna device 24 has a fitting hole 24A that fits with the first antenna mounting member 25 installed to the upper revolving body 3, and the first antenna holder 30 is composed of a base member 30A that is fixed to the left rear holding member 15A and a protruding member 30B that is installed to the base member 30A, protrudes upward, and fits with the fitting hole 24A of the first antenna device 24. According to this structure, it is possible to stably hold the first antenna device 24 detached from the first antenna mounting member 25 by the first antenna holder 30.

[0091] Further, in the embodiment, a case where the cutout grooves 31, 34 as cable insertion portions are formed in the upper cover 20 of the cabin cover 11 is exemplified. However, the present application is not limited thereto, and for example, it can be configured such that the cutout groove 31 is formed in the left rear side door 16 and the cutout groove 34 is formed in the right side door 19.

[0092] In the embodiment, the first antenna holder 30 is shown as being attached to the left rear holding member 15A, but it may also be attached to the left intermediate holding member 15B, for example. Similarly, the second antenna holder 33 is shown as being attached to the partition member 14, but it may also be attached to the right holding member 18, for example.

[0093] Furthermore, in the embodiment, the hydraulic excavator 1 including the crawler-type lower traveling structure 2 is described as an example. However, the present invention is not limited thereto, and can also be applied to a hydraulic excavator including a wheel-type lower traveling structure.

[0094] Explanation of symbols

[0095] 1-Hydraulic excavator, 2-lower traveling body (vehicle body), 3-upper rotating body (vehicle body), 4-working device, 5-rotating frame (vehicle body frame), 8-hydraulic pump, 9-heat exchanger, 11-cabin cover, 12-heat exchanger room (first antenna storage room), 13-pump room (second antenna storage room), 14-partition component, 15A-left rear holding component (holding component), 16-left rear side door, 19-right side door, 24-first Antenna device, 24A—mating hole, 25—first antenna mounting member, 26—first cable, 27—second antenna device, 28—second antenna mounting member, 29—second cable, 30—first antenna retaining member, 30A—base member, 30B—protruding member, 31, 34—cutout groove (cable insertion portion), 31A, 34A—open end, 32, 35—cable protection member, 33—second antenna retaining member, 33A—base member.

Claims

1. An engineering machine comprising a self-propelled vehicle body and a working device provided on the front side of the vehicle body. The above vehicle body has: body frame; a cabin cover, which is provided on the vehicle body frame; an antenna mounting member, which is provided on the vehicle body; and The antenna device is detachably mounted on the antenna mounting member and connected to the controller via a cable. The above-mentioned construction machinery is characterized in that: The above vehicle body has: an antenna storage room provided in the cabin cover for storing the antenna device removed from the antenna mounting member with the cable connected thereto; and The antenna holder is provided in the antenna storage chamber and holds the antenna device removed from the antenna mounting member. The housing cover includes a door that covers the antenna storage room in an openable and closable manner and is lockable when the antenna storage room is closed.

2. The construction machinery according to claim 1, characterized in that: The housing cover or the door is provided with a cable insertion portion through which the cable is inserted when the antenna device is stored in the antenna storage chamber.

3. The construction machine according to claim 2, characterized in that: The cable insertion portion is formed of a cutout groove provided at an end portion of the housing cover or the door so as to be an open end when the door is closed.

4. The construction machine according to claim 3, characterized in that: A cable protector is provided on the cable or the cutout groove. The cable protector is engaged with the cutout groove to protect the cable when the cable is inserted into the cutout groove.

5. The construction machine according to claim 4, characterized in that: The cable protector is composed of an annular body mounted on the cable. The cable is inserted through the inner peripheral side of the cable protector in the axial direction, and the outer peripheral side of the cable protector is fitted into the cutout groove.

6. The construction machine according to claim 4, characterized in that: The cable protection member is composed of a C-shaped body installed in the cutout groove. The cable is inserted through the inner peripheral side of the cable protector in a radial direction, and the outer peripheral side of the cable protector is fitted into the cutout groove.

7. The construction machine according to claim 1, characterized in that: A heat exchanger chamber for housing the heat exchanger mounted on the vehicle body is provided in the cabin cover. The antenna storage room is formed by the heat exchanger room.

8. The engineering machine according to claim 7, characterized in that: The antenna holder is mounted on a holding member that supports the cabin cover. The antenna holder is provided at a position where, when holding the antenna device, the antenna device does not overlap with the heat exchanger in a flow direction of cooling air supplied to the heat exchanger.

9. The construction machine according to claim 1, characterized in that: A partition member is provided in the housing cover, the partition member separating a prime mover chamber accommodating a prime mover mounted on the vehicle body from a pump chamber accommodating a hydraulic pump. The antenna storage chamber is formed by the pump chamber. The antenna holder is provided on the partition member.

10. The engineering machine according to claim 1, characterized in that: The antenna device is composed of a first antenna device arranged on one side of the vehicle body in the left-right direction and a second antenna device arranged on the other side of the vehicle body in the left-right direction. The antenna storage chamber is composed of a first antenna storage chamber for storing the first antenna device and a second antenna storage chamber for storing the second antenna device. The first antenna storage room is formed by a heat exchanger room provided in the cabin cover for storing a heat exchanger mounted on the vehicle body. The second antenna storage chamber is formed by a pump chamber provided in the housing cover for storing a hydraulic pump mounted on the vehicle body.

11. The engineering machine according to claim 1, characterized in that: The antenna device has a fitting hole for fitting into the antenna mounting member mounted on the vehicle body. The antenna holder is configured to include: a base member fixed to the vehicle body; and The protruding member is mounted on the base member and protrudes upward, and is engaged with the engaging hole of the antenna device.

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