Work machine

Abstract

To provide a work machine which prevents removal of an antenna from outside.SOLUTION: A hydraulic shovel 1 includes a left vehicle body upper face frame 14, an equipment chamber 20S, and a fixing part 50. The equipment chamber 20S is positioned below the left vehicle body upper face frame 14. The fixing part 50 fixes a first GNSS antenna 16 to the left vehicle body upper face frame 14 from the inside of the equipment chamber 20S so that at least a part of the first GNSS antenna 16 is arranged above the left vehicle body upper face frame 14.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present disclosure relates to work machines. [Background technology]

[0002] 2. Description of the Related Art Conventionally, a work machine equipped with an antenna for a Global Navigation Satellite System (GNSS) is known.

[0003] For example, in the work machine described in Patent Document 1, an antenna is disposed at the tip of a mast erected on the top surface of the vehicle body. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2015-21320 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, when an antenna is installed at the tip of a mast, it can be easily removed from the outside, making it easy for the antenna to be stolen. Therefore, to prevent theft, it is necessary to remove the antenna from the mast after work is completed, which is troublesome. In addition, there is a risk that the harness will deteriorate as the antenna is repeatedly attached and detached.

[0006] An object of the present disclosure is to provide a work machine that prevents external removal of an antenna. [Means for solving the problem]

[0007] A work machine according to one aspect of the present disclosure includes a vehicle body top frame, an accommodation space, and a fixing part. The accommodation space is located below the vehicle body top frame. The fixing part fixes the antenna to the vehicle body top frame from inside the accommodation space such that at least a portion of the antenna is positioned above the vehicle body top frame. Effect of the Invention

[0008] According to the present disclosure, a work machine can be provided that prevents external removal of the antenna. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a rear perspective view of a hydraulic excavator according to an embodiment; [Diagram 2] FIG. 1 is a left perspective view of an exterior cover according to an embodiment; [Diagram 3] FIG. 2 is a right-front perspective view of an exterior cover according to an embodiment; [Figure 4] FIG. 1 is a right perspective view of an exterior cover according to an embodiment; [Diagram 5] FIG. 2 is a left-front perspective view of an exterior cover according to an embodiment; [Figure 6] FIG. 1 is a rear perspective view of a first GNSS antenna according to an embodiment. [Figure 7] 1 is a cross-sectional view of a fixing structure of a first GNSS antenna according to an embodiment; [Figure 8] FIG. 2 is an exploded perspective view of a fixing structure of the first GNSS antenna according to the embodiment; [Figure 9] FIG. 2 is a bottom perspective view of a fixing structure for a first GNSS antenna according to an embodiment; [Figure 10] FIG. 1 is a rear perspective view of a second GNSS antenna according to an embodiment. [Figure 11] 4 is a cross-sectional view of a fixing structure of a second GNSS antenna according to an embodiment; [Figure 12] FIG. 2 is an exploded perspective view of a fixing structure of a second GNSS antenna according to an embodiment; [Figure 13] 1 is a bottom perspective view of an insulating material according to an embodiment; [Figure 14] 14 is a bottom perspective view of FIG. 13 with the mounting removed; [Figure 15] FIG. 13 is a perspective view showing a cover according to a fourth modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] (Hydraulic excavator 1) The configuration of a hydraulic excavator 1 according to an embodiment will be described with reference to the drawings. Fig. 1 is a rear perspective view of the hydraulic excavator 1. Fig. 2 is a left perspective view of an exterior cover 13. Fig. 3 is a right front perspective view of the exterior cover 13. Fig. 4 is a right perspective view of the exterior cover 13. Fig. 5 is a left front perspective view of the exterior cover 13.

[0011] The hydraulic excavator 1 is an example of a "work machine" according to the present disclosure. The hydraulic excavator 1 includes a lower traveling body 10, an upper rotating body 11, a counterweight 12, an exterior cover 13, a left vehicle body upper surface frame 14, a right vehicle body upper surface frame 15, a first GNSS antenna 16, a second GNSS antenna 17, a work implement 18, and a cab 19. The upper rotating body 11, the counterweight 12, the exterior cover 13, the left vehicle body upper surface frame 14, the right vehicle body upper surface frame 15, and the cab 19 form a main vehicle body part of the hydraulic excavator 1. Each of the first GNSS antenna 16 and the second GNSS antenna 17 is an example of an "antenna" according to the present disclosure.

[0012] The undercarriage 10 has a pair of tracks (only the left track is shown in FIG. 1) that can rotate independently of each other. The hydraulic excavator 1 can move forward, backward, left and right by rotating the pair of tracks.

[0013] The upper rotating body 11 is disposed on the lower traveling body 10. The upper rotating body 11 is rotatable. The upper rotating body 11 supports a counterweight 12, an exterior cover 13, a work machine 18, and a cab 19.

[0014] The counterweight 12 is disposed on the rear end of the upper rotating body 11. The counterweight 12 is formed, for example, by putting concrete or the like into a box made of steel plates. The counterweight 12 is used to maintain the balance of the vehicle body during excavation work or the like.

[0015] The exterior cover 13 is disposed on the upper rotating body 11. The exterior cover 13 is disposed in front of the counterweight 12 and behind the cab 19. As shown in Figs. 2 to 4, the exterior cover 13 is attached to a support frame 27. The support frame 27 is disposed on the upper rotating body 11. The support frame 27 is disposed along the outer edge of an equipment room 20S, which will be described later.

[0016] 1, the exterior cover 13 has a vehicle body upper surface cover 20, a left side cover 30, and a right side cover 40. In this embodiment, the vehicle body upper surface cover 20 is divided into a left upper surface cover 21, an engine hood 22, and a right upper surface cover 23.

[0017] As shown in Figures 2 to 4, an equipment room 20S is located below the vehicle body top cover 20. In the equipment room 20S, cooling equipment 26 (see Figure 2) such as a radiator and a cooling fan, a heat source 28 (see Figure 3) such as an engine and an exhaust gas treatment device, and auxiliary equipment 29 (see Figure 4) such as a hydraulic oil tank, a hydraulic oil pump, and a fuel tank are arranged. The equipment room 20S is an example of an "accommodation space" according to the present disclosure. Note that Figure 2 illustrates a state in which the left side cover 30 is open, Figure 3 illustrates a state in which the engine hood 22 is open, and Figure 4 illustrates a state in which the right side cover 40 is open.

[0018] In this embodiment, the cooling equipment 26 is arranged across and below the left upper cover 21 and the engine hood 22, the heat source 28 is arranged across and below the engine hood 22 and the right upper cover 23, and the auxiliary equipment 29 is arranged below the right upper cover 23.

[0019] 1, the left upper cover 21 is disposed on the left side of the engine hood 22. The left upper cover 21 is fixed to a support frame 27 by bolts and cannot be opened or closed.

[0020] As shown in Fig. 1, the engine hood 22 is disposed between the left upper surface cover 21 and the right upper surface cover 23 in the vehicle width direction. As shown in Fig. 3, the rear end of the engine hood 22 is supported by a hinge 22a so as to be openable and closable. The hinge 22a is connected to the engine hood 22 and the support frame 27. The engine hood 22 can be opened and closed between a closed position (see Fig. 1) and an open position (see Fig. 3).

[0021] 1, the upper right side cover 23 is disposed on the right side of the engine hood 22. The upper right side cover 23 is fixed to a support frame 27 by bolts and cannot be opened or closed.

[0022] As shown in FIG. 1, the left side cover 30 is disposed below and to the left of the upper-left cover 21. The left side cover 30 covers the side (left) of the equipment room 20S. As shown in FIG. 2, the rear end of the left side cover 30 is supported by a hinge 30a so as to be openable and closable. The hinge 30a is connected to the left side cover 30 and the support frame 27. The left side cover 30 can be opened and closed between a closed position (see FIG. 1) and an open position (see FIG. 2). The left side cover 30 has a locking mechanism 30b. The left side cover 30 can be locked in the closed position by engaging a latch of the locking mechanism 30b with a latch receiver 27a attached to the support frame 27.

[0023] The right side cover 40 is disposed to the lower right of the upper right side cover 23. The right side cover 40 covers the side (right) of the equipment room 20S. Like the left side cover 30, the rear end of the right side cover 40 is supported by a hinge (not shown) so as to be openable and closable. The right side cover 40 can be opened and closed between a closed position and an open position (see FIG. 4). The right side cover 40 has a locking mechanism 40b. By engaging the latch of the locking mechanism 40b with a latch receiver 27b attached to the support frame 27, the right side cover 40 can be locked in the closed position.

[0024] The left vehicle body top frame 14 is disposed on the support frame 27. The left vehicle body top frame 14 extends along the front-rear direction. The left vehicle body top frame 14 is disposed to the left of the vehicle body top cover 20 (specifically, the left top cover 21) and above the left side cover 30. A first GNSS antenna 16 is fixed to the left vehicle body top frame 14. The left vehicle body top frame 14 is an example of a "vehicle body top frame" according to the present disclosure.

[0025] The right vehicle body top frame 15 is disposed on the support frame 27. The right vehicle body top frame 15 extends along the front-rear direction. The right vehicle body top frame 15 is disposed to the right of the vehicle body top cover 20 (specifically, the upper right side cover 23) and above the right side cover 40. A second GNSS antenna 17 is fixed to the right vehicle body top frame 15. The right vehicle body top frame 15 is an example of a "vehicle body top frame" according to the present disclosure.

[0026] The first GNSS antenna 16 is an antenna used for a GNSS (Global Navigation Satellite System). As shown in FIG. 1, the first GNSS antenna 16 is fixed to the left vehicle body upper frame 14. At least a portion of the first GNSS antenna 16 is disposed above the left vehicle body upper frame 14. The first GNSS antenna 16 is disposed behind the cab 19. The first GNSS antenna 16 is connected to a controller 19a in the cab 19 via a first harness H1. The first harness H1 extends from the first GNSS antenna 16 toward the right front. The fixing structure of the first GNSS antenna 16 will be described later.

[0027] The second GNSS antenna 17 is an antenna used for GNSS. As shown in FIG. 1, the second GNSS antenna 17 is fixed to the right vehicle body upper frame 15. At least a part of the second GNSS antenna 17 is disposed above the right vehicle body upper frame 15. The second GNSS antenna 17 is disposed on the opposite side of the first GNSS antenna 16 with respect to the center of the hydraulic excavator 1 in the vehicle width direction. The second GNSS antenna 17 is connected to a controller 19a in the cab 19 via a second harness H2. The second harness H2 extends from the second GNSS antenna 17 toward the left front. The fixing structure of the second GNSS antenna 17 will be described later.

[0028] 1, the first GNSS antenna 16 is disposed to the left of the vehicle body top cover 20, and the second GNSS antenna 17 is disposed to the right of the vehicle body top cover 20. This ensures a sufficient distance between the first GNSS antenna 16 and the second GNSS antenna 17 in the vehicle width direction, thereby improving the accuracy of the vehicle body direction calculation results using the positioning results of each antenna.

[0029] 1, the first GNSS antenna 16 is disposed at the rear end of the left vehicle body upper frame 14, and the second GNSS antenna 17 is disposed at the front end of the right vehicle body upper frame 15. This ensures a greater distance between the first GNSS antenna 16 and the second GNSS antenna 17 not only in the vehicle width direction but also in the front-rear direction, thereby further improving the accuracy of the vehicle direction calculation results using the positioning results of each antenna.

[0030] 1, the first GNSS antenna 16 disposed behind the cab 19 is disposed at the rear end of the left vehicle body upper frame 14. This allows the first GNSS antenna 16 to be separated from the cab 19, thereby increasing the sky factor of the first GNSS antenna 16. As a result, the positioning accuracy of the first GNSS antenna 16 can be improved.

[0031] The work implement 18 is swingably attached to the front end of the upper rotating body 11. The work implement 18 is disposed to the side of the cab 19.

[0032] The cab 19 is disposed on the upper rotating body 11. The cab 19 is disposed in front of the exterior cover 13. The cab 19 is disposed to the side of the work machine 18. A driver's seat and an operating unit may be disposed in the cab 19.

[0033] (1st GNSS Antenna 16) The fixing structure of the first GNSS antenna 16 will be described with reference to the drawings. Fig. 6 is a rear perspective view of the first GNSS antenna 16. Fig. 7 is a cross-sectional view of the fixing structure of the first GNSS antenna 16. Fig. 8 is an exploded perspective view of the fixing structure of the first GNSS antenna 16. Fig. 9 is a bottom perspective view of the fixing structure of the first GNSS antenna 16 as viewed from inside the equipment room 20S.

[0034] 6 and 7, the first GNSS antenna 16 has an upper portion 16a and a lower portion 16b. The upper portion 16a is a portion of the first GNSS antenna 16 that is disposed above the left vehicle body upper frame 14. The lower portion 16b is a portion of the first GNSS antenna 16 that is inserted into the opening 14a of the left vehicle body upper frame 14.

[0035] The upper part 16a is cone-shaped. This makes it difficult to grab the upper part 16a of the first GNSS antenna 16 with a hand or a tool, thereby preventing the first GNSS antenna 16 from being removed from the outside of the left vehicle body upper frame 14.

[0036] 7, the lower part 16b has an outer surface 16T that faces the inner surface 14T of the opening 14a of the left vehicle body upper frame 14. When the first GNSS antenna 16 is rotated around a first connecting member 51 (described later), the outer surface 16T of the lower part 16b abuts against the inner surface 14T of the opening 14a. Therefore, the first GNSS antenna 16 itself cannot be rotated, and therefore the first GNSS antenna 16 can be prevented from being removed from the outside of the left vehicle body upper frame 14.

[0037] 7 to 9, the first GNSS antenna 16 is fixed to the left vehicle body upper frame 14 from inside the equipment compartment 20S by a fixing part 50. In this disclosure, the GNSS antenna being fixed to the frame means that the GNSS antenna attached to the frame can be removed from inside the frame and cannot be removed from outside the frame.

[0038] In this embodiment, the fixing portion 50 has a first connecting member 51, a first seat 52, a second connecting member 53 and a second seat 54.

[0039] The first connecting member 51 fixes the first GNSS antenna 16 to the left vehicle body upper frame 14. The first connecting member 51 is fastened to the first GNSS antenna 16 from inside the equipment room 20S. The first connecting member 51 is inserted into the insertion hole 52a of the first seat 52. The first connecting member 51 is fastened to the first GNSS antenna 16, thereby connecting the first GNSS antenna 16 to the first seat 52. The first connecting member 51 is fastened from below the first GNSS antenna 16. The first connecting member 51 is fastened to the lower part of the first GNSS antenna 16. In this embodiment, one first connecting member 51 is fastened to the center of the first GNSS antenna 16, but the number and arrangement of the first connecting members 51 can be changed as appropriate. In this embodiment, a bolt is used as the first connecting member 51, but the first connecting member 51 may be any member capable of connecting the first GNSS antenna 16 to the first seat 52. For example, the first connecting member 51 may be a clamp or a joint formed by welding.

[0040] The first seat 52 is a plate-shaped member. The first seat 52 is disposed below the opening 14a of the left vehicle body upper surface frame 14. The first GNSS antenna 16 is disposed on the first seat 52. The first seat 52 is disposed substantially parallel to the left vehicle body upper surface frame 14 in the equipment room 20S. The first seat 52 has an insertion hole 52a, a nut 52b, and a notch 52c. The first coupling member 51 is inserted into the insertion hole 52a. The nut 52b is fixed to the upper surface of the first seat 52. The second coupling member 53 is fastened to the nut 52b. The notch 52c is provided to pass the first harness H1 to the first GNSS antenna 16 side. In this embodiment, since the first harness H1 extends from the first GNSS antenna 16 toward the right front, the notch 52c is formed in the right front corner of the first seat 52.

[0041] The second connecting member 53 connects the first seat 52 to the second seat 54. The second connecting member 53 is inserted through the second seat 54 and the first seat 52, and is fastened to the nut 52b of the first seat 52. This connects the second seat 54 to the first seat 52. In this embodiment, three second connecting members 53 are arranged in an L-shape, but the number and arrangement of the second connecting members 53 can be changed as appropriate. In this embodiment, a bolt is used as the second connecting member 53, but the second connecting member 53 may be any member that can connect the first seat 52 to the second seat 54. For example, the second connecting member 53 may be a clamp or a joint formed by welding.

[0042] The second seat 54 is fixed to the left vehicle body upper frame 14. In this embodiment, the outer edge of the second seat 54 is welded to the inner surface of the left vehicle body upper frame 14, but the method of fixing the second seat 54 to the left vehicle body upper frame 14 is not particularly limited.

[0043] The first seat 52 is coupled to the second seat 54 by a second coupling member 53. The coupling of the first seat 52 to the second seat 54 may be performed after the first GNSS antenna 16 is coupled to the first seat 52, or may be performed before the first GNSS antenna 16 is coupled to the first seat 52.

[0044] (How to attach and detach the first GNSS antenna 16) A method for attaching and detaching the first GNSS antenna 16 will be described with reference to the drawings.

[0045] First, there will be described the first and second removal methods for the first GNSS antenna 16. The first GNSS antenna 16 does not need to be removed on a daily basis, but it may be necessary to remove it in the event of, for example, a malfunction.

[0046] The first removal method is as follows. First, as shown in FIG. 2, the left side cover 30 is unlocked and opened to the open position. Next, in the equipment compartment 20S, the first harness H1 shown in FIG. 9 is unplugged from the first GNSS antenna 16. Next, in the equipment compartment 20S, the first coupling member 51 shown in FIG. 9 is loosened and unplugged from the first GNSS antenna 16. Next, the first GNSS antenna 16 is lifted from above the left vehicle body upper frame 14 and removed from the vehicle body. Next, the left side cover 30 is returned to the closed position and locked.

[0047] The second removal method is as follows. First, as shown in FIG. 2, the left side cover 30 is unlocked and opened to the open position. Next, in the equipment room 20S, the first harness H1 shown in FIG. 9 is removed from the first GNSS antenna 16. Next, in the equipment room 20S, the second connecting member 53 shown in FIG. 9 is loosened and removed from the second seat 54. Next, the first GNSS antenna 16 to which the first seat 52 is connected is lifted from above the left vehicle body upper frame 14 and removed from the vehicle body. Next, the left side cover 30 is returned to the closed position and locked. Next, the first connecting member 51 is loosened and removed from the first GNSS antenna 16, thereby removing the first seat 52 from the first GNSS antenna 16.

[0048] Next, the first and second mounting methods of the first GNSS antenna 16 will be described.

[0049] The first mounting method is as follows. First, as shown in FIG. 6, the first GNSS antenna 16 is inserted into the opening 14a from above the left vehicle body upper frame 14. Next, as shown in FIG. 2, the left side cover 30 is unlocked and opened to the open position. Next, from inside the equipment room 20S, the first coupling member 51 is fastened to the first GNSS antenna 16 through the insertion hole 52a of the first seat 52, thereby coupling the first GNSS antenna 16 to the first seat 52. Next, from inside the equipment room 20S, the first harness H1 is inserted into the first GNSS antenna 16. Next, the left side cover 30 is returned to the closed position and locked.

[0050] The second mounting method is as follows. First, the first connecting member 51 is fastened to the first GNSS antenna 16 through the insertion hole 52a of the first seat 52, thereby connecting the first seat 52 to the first GNSS antenna 16. Next, the first GNSS antenna 16 to which the first seat 52 is connected is inserted into the opening 14a from above the left vehicle body upper frame 14. Next, as shown in FIG. 2, the left side cover 30 is unlocked and opened to the open position. Next, the second connecting member 53 is fastened to the nut 52b of the first seat 52 from inside the equipment room 20S, thereby connecting the second seat 54 to the first seat 52. Next, the first harness H1 is inserted into the first GNSS antenna 16 from inside the equipment room 20S. Next, the left side cover 30 is returned to the closed position and locked.

[0051] As described above, the first GNSS antenna 16 is fixed to the left vehicle body top frame 14 from inside the equipment compartment 20S by the fixing part 50, and therefore the first GNSS antenna 16 cannot be attached or detached unless the first connecting member 51 or the second connecting member 53 is handled from inside the equipment compartment 20S.

[0052] Even if the engine hood 22 is opened to the open position, the cooling device 26 is disposed across the upper left side cover 21 and below the engine hood 22, so it is not possible to access the fixing portion 50 of the first GNSS antenna 16. Therefore, the first GNSS antenna 16 cannot be attached or detached unless the left side cover 30 is unlocked.

[0053] (2nd GNSS Antenna 17) The fixing structure of the second GNSS antenna 17 will be described with reference to the drawings. Fig. 10 is a rear perspective view of the second GNSS antenna 17. Fig. 11 is a cross-sectional view of the fixing structure of the second GNSS antenna 17. Fig. 12 is an exploded perspective view of the fixing structure of the second GNSS antenna 17. Fig. 13 is a perspective view of the heat insulating material 65 as seen from inside the equipment room 20S. Fig. 14 is a bottom perspective view showing the state in which the first heat insulating material 65, the second heat insulating material 66, and the mounting fixture 67 of Fig. 13 have been removed.

[0054] 10 and 11, the second GNSS antenna 17 has an upper portion 17a and a lower portion 17b. The upper portion 17a is a portion of the second GNSS antenna 17 that is disposed above the right vehicle body upper frame 15. The lower portion 17b is a portion of the second GNSS antenna 17 that is inserted into the opening 15a of the right vehicle body upper frame 15.

[0055] The upper part 17a is cone-shaped. This makes it difficult to grab the upper part 17a of the second GNSS antenna 17 with a hand or a tool, thereby preventing the second GNSS antenna 17 from being removed from the outside of the right vehicle body upper frame 15.

[0056] 11, the lower part 17b has an outer surface 17T that faces the inner surface 15T of the opening 15a of the right vehicle body upper frame 15. When the second GNSS antenna 17 is rotated around a first connecting member 61 (described later), the outer surface 17T of the lower part 17b abuts against the inner surface 15T of the opening 15a. Therefore, the second GNSS antenna 17 itself cannot be rotated, and therefore the second GNSS antenna 17 can be prevented from being removed from the outside of the right vehicle body upper frame 15.

[0057] As shown in FIGS. 11 to 14, the second GNSS antenna 17 is fixed by a fixing portion 60 to the right vehicle body upper frame 15 from inside the equipment room 20S.

[0058] In this embodiment, the fixing portion 60 has a first connecting member 61 , a first seat 62 , a second connecting member 63 , a second seat 64 , a first insulating material 65 , a second insulating material 66 , and a mounting fixture 67 .

[0059] The first coupling member 61 fixes the second GNSS antenna 17 to the right vehicle body upper frame 15. The first coupling member 61 is fastened to the second GNSS antenna 17 from inside the equipment room 20S. The first coupling member 61 is inserted into the insertion hole 62a of the first seat 62. The first coupling member 61 is fastened to the second GNSS antenna 17, thereby coupling the second GNSS antenna 17 to the first seat 62. The first coupling member 61 is fastened from below the second GNSS antenna 17. The first coupling member 61 is fastened to the lower part of the second GNSS antenna 17. In this embodiment, one first coupling member 61 is fastened to the center of the second GNSS antenna 17, but the number and arrangement of the first coupling members 61 can be changed as appropriate. In this embodiment, a bolt is used as the first coupling member 61, but the first coupling member 61 may be any member capable of coupling the second GNSS antenna 17 to the first seat 62. For example, the first connecting member 61 may be a clamp or a joint formed by welding.

[0060] The first seat 62 is a plate-shaped member. The first seat 62 is disposed below the opening 15a of the right vehicle body upper surface frame 15. The second GNSS antenna 17 is disposed on the first seat 62. The first seat 62 is disposed substantially parallel to the right vehicle body upper surface frame 15 in the equipment room 20S. The first seat 62 has an insertion hole 62a, a nut 62b, and a notch 62c. The first coupling member 61 is inserted into the insertion hole 62a. The nut 62b is fixed to the upper surface of the first seat 62. The second coupling member 63 is fastened to the nut 62b. The notch 62c is provided to pass the second harness H2 to the second GNSS antenna 17 side. In this embodiment, since the second harness H2 extends from the second GNSS antenna 17 toward the left front, the notch 62c is formed in the left front corner of the first seat 62.

[0061] The second connecting member 63 connects the first seat 62 to the second seat 64. The second connecting member 63 is inserted through the second seat 64 and the first seat 62, and is fastened to the nut 62b of the first seat 62. This connects the second seat 64 to the first seat 62. In this embodiment, three second connecting members 63 are arranged in an L-shape, but the number and arrangement of the second connecting members 63 can be changed as appropriate. In this embodiment, a bolt is used as the second connecting member 63, but the second connecting member 63 may be any member that can connect the first seat 62 to the second seat 64. For example, the second connecting member 63 may be a clamp or a joint formed by welding.

[0062] The second seat 64 is fixed to the right vehicle body upper frame 15. In this embodiment, the outer edge of the second seat 64 is welded to the inner surface of the right vehicle body upper frame 15, but the method of fixing the second seat 64 to the right vehicle body upper frame 15 is not particularly limited.

[0063] The first seat 62 is coupled to the second seat 64 by a second coupling member 63. The coupling of the first seat 62 to the second seat 64 may be performed after the second GNSS antenna 17 is coupled to the first seat 62, or may be performed before the second GNSS antenna 17 is coupled to the first seat 62.

[0064] The first insulating material 65 and the second insulating material 66 are disposed between the second GNSS antenna 17 and the heat source 28 in the equipment room 20S. The first insulating material 65 is disposed below the second GNSS antenna 17. The second insulating material 66 is disposed to the side of the second GNSS antenna 17. The first insulating material 65 has an insertion hole 65a for inserting the second harness H2. The first insulating material 65 and the second insulating material 66 are fixed to a mounting fixture 67. Well-known insulating materials can be used as the first insulating material 65 and the second insulating material 66.

[0065] The mounting fixture 67 is attached to a support member 68 by three bolts 67a. The support member 68 is welded to the right vehicle body upper frame 15. However, the method of fixing the support member 68 to the right vehicle body upper frame 15 is not particularly limited, and for example, a clamp or a bolt may be used.

[0066] (How to attach and detach the second GNSS antenna 17) A method for attaching and detaching the second GNSS antenna 17 will be described with reference to the drawings.

[0067] The following describes first and second removal methods for the second GNSS antenna 17. The second GNSS antenna 17 does not need to be removed on a daily basis, but may need to be removed in the event of, for example, a malfunction.

[0068] The first removal method is as follows. First, as shown in FIG. 4, the right side cover 40 is unlocked and opened to the open position. Next, in the equipment room 20S, the attachment tool 67 shown in FIG. 13 is removed. Next, in the equipment room 20S, the second harness H2 shown in FIG. 14 is unplugged from the second GNSS antenna 17. Next, in the equipment room 20S, the first coupling member 61 shown in FIG. 14 is loosened and unplugged from the second GNSS antenna 17. Next, the second GNSS antenna 17 is lifted from above the right vehicle body upper frame 15 and removed from the vehicle body. Next, the right side cover 40 is returned to the closed position and locked.

[0069] The second removal method is as follows. First, as shown in FIG. 4, the right side cover 40 is unlocked and opened to the open position. Next, in the equipment room 20S, the three bolts 67a shown in FIG. 13 are loosened and removed, and then the mounting fixture 67 is removed from the support member 68. Next, in the equipment room 20S, the second harness H2 shown in FIG. 14 is removed from the second GNSS antenna 17. Next, in the equipment room 20S, the second coupling member 63 shown in FIG. 14 is loosened and removed from the second seat 64. Next, the second GNSS antenna 17 to which the first seat 62 is coupled is lifted from above the right vehicle body upper frame 15 and removed from the vehicle body. Next, the right side cover 40 is returned to the closed position and locked. Next, the first coupling member 61 is loosened and removed from the second GNSS antenna 17, thereby removing the first seat 62 from the second GNSS antenna 17.

[0070] Next, the first and second mounting methods for the second GNSS antenna 17 will be described.

[0071] The first mounting method is as follows. First, as shown in FIG. 10, the second GNSS antenna 17 is inserted into the opening 15a from above the right vehicle body upper frame 15. Next, as shown in FIG. 4, the right side cover 40 is unlocked and opened to the open position. Next, the first connecting member 61 is fastened to the second GNSS antenna 17 through the insertion hole 62a of the first seat 62 from inside the equipment room 20S, thereby connecting the first seat 62 to the second GNSS antenna 17. Next, the second harness H2 is inserted into the second GNSS antenna 17 from inside the equipment room 20S. Next, as shown in FIG. 13, the mounting tool 67 to which the first insulating material 65 and the second insulating material 66 are attached is attached to the support member 68. Next, the right side cover 40 is returned to the closed position and locked.

[0072] The second mounting method is as follows. First, the first connecting member 61 is fastened to the second GNSS antenna 17 through the insertion hole 62a of the first seat 62, thereby connecting the first seat 62 to the second GNSS antenna 17. Next, the second GNSS antenna 17 to which the first seat 62 is connected is inserted into the opening 15a from above the right vehicle body upper frame 15. Next, as shown in FIG. 4, the right side cover 40 is unlocked and the right side cover 40 is opened to the open position. Next, the second connecting member 63 is fastened to the nut 62b of the first seat 62 from inside the equipment room 20S, thereby connecting the second seat 64 to the first seat 62. Next, the second harness H2 is inserted into the second GNSS antenna 17 from inside the equipment room 20S. Next, as shown in FIG. 13, the mounting tool 67 to which the first insulating material 65 and the second insulating material 66 are attached is attached to the support member 68. Next, the right side cover 40 is returned to the closed position and locked.

[0073] As described above, the second GNSS antenna 17 is fixed to the right body top frame 15 from inside the equipment compartment 20S by the fixing part 60, and therefore the second GNSS antenna 17 cannot be attached or detached unless the first connecting member 61 or the second connecting member 63 is handled from inside the equipment compartment 20S.

[0074] Even if the engine hood 22 is opened to the open position, the heat source 28 and the auxiliary machinery 29 are disposed below the engine hood 22 and the upper right side cover 23, so that it is not possible to access the fixing portion 60 of the second GNSS antenna 17. Therefore, the second GNSS antenna 17 cannot be attached or detached unless the right side cover 40 is unlocked.

[0075] (Features) The hydraulic excavator 1 includes a left vehicle body top frame 14, an equipment room 20S, and a fixing unit 50. The equipment room 20S is located below the left vehicle body top frame 14. The fixing unit 50 fixes the first GNSS antenna 16 to the left vehicle body top frame 14 from inside the equipment room 20S such that at least a portion of the first GNSS antenna 16 is disposed above the left vehicle body top frame 14.

[0076] Therefore, since the first GNSS antenna 16 can be prevented from being removed from the outside, the first GNSS antenna 16 is less likely to be stolen. Therefore, there is no need to remove and store the first GNSS antenna 16 after work is completed. In addition, deterioration of the first harness H1 due to repeated attachment and detachment of the first GNSS antenna 16 can be suppressed. Furthermore, compared to a case in which the first GNSS antenna 16 is disposed at the tip of the mast, not only is it easier to clear height regulations during transportation, but the risk of contact with surrounding structures can be reduced, and it is possible to suppress unstable reception performance due to vibration.

[0077] In addition, the above effects can also be obtained by providing the hydraulic excavator 1 with a fixing portion 60 that fixes the second GNSS antenna 17 to the right body top frame 15 from inside the equipment room 20S so that at least a portion of the second GNSS antenna 17 is positioned above the right body top frame 15.

[0078] (Modification of the embodiment) The present invention is not limited to the above-described embodiments, and various modifications and alterations are possible without departing from the scope of the present invention.

[0079] [Variation 1] In the above embodiment, a hydraulic excavator has been described as an example of a work machine, but the work machine is not limited to this. For example, examples of the work machine include an electric excavator and a wheel loader.

[0080] [Variation 2] In the above embodiment, the first GNSS antenna 16 and the second GNSS antenna 17 are described as examples of antennas, but the antennas are not limited to these. For example, the antennas may be wireless antennas.

[0081] [Variation 3] In the above embodiment, the fixing portion 50 has the first connecting member 51, the first seat 52, the second connecting member 53, and the second seat 54, but is not limited to this.

[0082] For example, the fixing part 50 may be only one coupling member, such as the first coupling member 51. In this case, the first GNSS antenna 16 is placed on the left vehicle body top frame 14 and can be directly fixed to the left vehicle body top frame 14 by the first coupling member 51 inserted into the left vehicle body top frame 14. In this case, the entire first GNSS antenna 16 is disposed above the left vehicle body top frame 14. However, in this case, it is preferable that the fixing part 50 has a structure that does not come off even when the first GNSS antenna 16 itself is rotated, such as a structure that inhibits rotation of the first GNSS antenna 16 or a structure that rotates the first coupling member 51 in conjunction with rotating the first GNSS antenna 16 from the outside. Alternatively, the fixing part 50 can be configured by one connecting member and one seat. In this case, the first GNSS antenna 16 can be placed on the one seat and fixed to the seat by one connecting member inserted into the seat. In this case, as in the above embodiment, a part of the first GNSS antenna 16 is disposed above the left vehicle body upper frame 14.

[0083] [Variation 4] In the above embodiment, the hydraulic excavator 1 is originally equipped with the first GNSS antenna 16, but the first GNSS antenna 16 can be attached later.

[0084] 15, when the hydraulic excavator 1 is not equipped with the first GNSS antenna 16, the opening 14a of the left vehicle body upper frame 14 is blocked by a lid 14b. When attaching a new first GNSS antenna 16, the lid 14b is removed, and then the first GNSS antenna 16 can be attached as described in the above embodiment.

[0085] (Appendix 1) A work machine comprising: a vehicle body top frame; a storage space located below the vehicle body top frame; and a fixing portion that fixes the antenna to the vehicle body top frame from inside the storage space so that at least a portion of the antenna is positioned above the vehicle body top frame.

[0086] (Appendix 2) The work machine described in Appendix 1, wherein the fixing portion includes a first connecting member that fixes the antenna to the vehicle body upper frame.

[0087] (Appendix 3) The work machine described in Appendix 2, wherein the fixing portion includes a seat on which the antenna is placed, and the first connecting member fixes the antenna to the vehicle body upper frame via the seat.

[0088] (Appendix 4) The work machine described in Appendix 3, wherein the seat includes a first seat on which the antenna is disposed and a second seat fixed to the body upper frame, the first connecting member connects the antenna to the first seat, and the fixing portion further includes a second connecting member connecting the first seat to the second seat.

[0089] (Appendix 5) 5. The work machine described in any one of Appendices 2 to 4, wherein the antenna has a lower part that is inserted into an opening in the vehicle body upper frame, and when the antenna is rotated around the first connecting member, an outer surface of the lower part abuts against an inner surface of the opening.

[0090] (Appendix 6) 6. The work machine according to any one of claims 1 to 5, wherein an upper portion of the antenna, which is arranged above the vehicle body upper frame, is cone-shaped.

[0091] (Appendix 7) 7. The work machine according to any one of claims 1 to 6, wherein the fixing portion further comprises a thermal insulator disposed between the antenna and a heat source within the accommodation space.

[0092] (Appendix 8) 7. The working machine according to any one of claims 1 to 6, wherein the exterior cover includes a side cover that covers a side of the storage space, the side cover being openable and closable and lockable in a closed position. [Explanation of symbols]

[0093] 1...hydraulic excavator, 13...exterior cover, 14...left vehicle upper frame, 14a...opening, 14T...inner surface, 15...right vehicle upper frame, 15a...opening, 15T...inner surface, 16...first GNSS antenna, 16T...outer surface, 17...second GNSS antenna, 17T...outer surface, 19...cab, 20...vehicle upper cover, 20S...equipment room, 21...left upper cover, 22...engine Hood, 23...right upper side cover, 30...left side cover, 30b...locking mechanism, 40...right side cover, 40b...locking mechanism, 50...fixing portion, 51...first connecting member, 52...first seat, 53...second connecting member, 54...second seat, 60...fixing portion, 61...first connecting member, 62...first seat, 63...second connecting member, 64...second seat, H1...first harness, H2...second harness

Claims

1. An upper frame of the vehicle body; a storage space located below the vehicle body upper frame; a fixing portion that fixes the antenna to the vehicle body upper frame from inside the accommodation space so that at least a portion of the antenna is disposed above the vehicle body upper frame; A work machine comprising:

2. The fixing portion includes a connecting member that fixes the antenna to the vehicle body upper frame.

2. The work machine according to claim 1.

3. the fixing portion includes a seat on which the antenna is placed, The coupling member fixes the antenna to the vehicle body upper frame via the seat.

3. The work machine according to claim 2.

4. The locus is a first seat on which the antenna is disposed; a second seat fixed to the vehicle body upper frame; Including, The coupling member is a first coupling member that couples the antenna to the first seat; a second connecting member connecting the first seat to the second seat; include, 4. The work machine according to claim 3.

5. the antenna has a lower portion that is inserted into an opening in the vehicle body upper frame, When the antenna is rotated around the first coupling member, an outer surface of the lower portion abuts against an inner surface of the opening.

3. The work machine according to claim 2.

6. An upper portion of the antenna that is disposed above the vehicle body upper frame is cone-shaped.

2. The work machine according to claim 1.

7. The fixing portion further includes a heat insulating material disposed between the antenna and a heat source in the accommodation space.

2. The work machine according to claim 1.

8. Further provided is a side cover that covers the side of the storage space, The side cover is openable and lockable in the closed position.

2. The work machine according to claim 1.

Images