Construction machine

Abstract

A hydraulic shovel (1) is provided with a left vehicle body upper surface frame (14), an equipment chamber (20S), and a fixing section (50). The equipment room (20S) is located below the left vehicle body upper surface frame (14). The fixing part (50) fixes the first GNSS antenna (16) to the left vehicle body upper surface frame (14) from the inside of the equipment room (20S) in a manner that at least a part of the first GNSS antenna (16) is arranged above the left vehicle body upper surface frame (14).

Description

Technical Field

[0001] The present disclosure relates to construction machinery. Background Art

[0002] Conventionally, there is known a construction machine equipped with an antenna for a GNSS (Global Navigation Satellite System).

[0003] For example, in the construction machine described in Patent Document 1, an antenna is arranged at the front end portion of a mast erected on the upper surface of a vehicle body.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: (Japanese) Patent Publication No. 2015-21320 Summary of the invention

[0007] Technical problem to be solved by the invention

[0008] However, when an antenna is disposed at the front end of the mast, the antenna can be easily removed from the outside, so the antenna is easy to be stolen. Therefore, for the purpose of theft prevention, the antenna needs to be removed from the mast after the operation is completed, which is complicated. In addition, the wire harness may be degraded during the repeated removal and installation of the antenna.

[0009] An object of the present disclosure is to provide a construction machine that prevents an antenna from being disassembled from the outside.

[0010] Technical solutions for solving technical problems

[0011] The engineering machine disclosed in one aspect comprises a vehicle body upper frame, a storage space and a fixing part. The storage space is located below the vehicle body upper frame. The fixing part fixes the antenna to the vehicle body upper frame from the inside of the storage space in a manner that at least a part of the antenna is arranged above the vehicle body upper frame.

[0012] Effects of the Invention

[0013] According to the present disclosure, it is possible to provide a construction machine that prevents an antenna from being removed from the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a rear perspective view of the hydraulic excavator according to the embodiment.

[0015] Figure 2 This is a left perspective view of the exterior cover according to the embodiment.

[0016] Figure 3 This is a right front perspective view of the exterior cover according to the embodiment.

[0017] Figure 4 It is a right perspective view of the exterior cover according to the embodiment.

[0018] Figure 5 This is a left front perspective view of the exterior cover according to the embodiment.

[0019] Figure 6 This is a rear perspective view of the first GNSS antenna according to the embodiment.

[0020] Figure 7 This is a cross-sectional view of the fixing structure of the first GNSS antenna according to the embodiment.

[0021] Figure 8 This is an exploded perspective view of the fixing structure of the first GNSS antenna according to the embodiment.

[0022] Fig. 9 This is a bottom perspective view of the fixing structure of the first GNSS antenna according to the embodiment.

[0023] Fig.10 This is a rear perspective view of the second GNSS antenna according to the embodiment.

[0024] Fig.11 It is a cross-sectional view of the fixing structure of the second GNSS antenna according to the embodiment.

[0025] Fig.12 It is an exploded perspective view of the fixing structure of the second GNSS antenna according to the embodiment.

[0026] Fig.13 It is a bottom perspective view of the heat insulating material of embodiment.

[0027] Fig.14 yes Fig.13 A three-dimensional view of the bottom with the mounting parts removed.

[0028] Fig.15 It is a perspective view showing a cover according to Modification 4. DETAILED DESCRIPTION

[0029] (Hydraulic Excavator 1)

[0030] The structure of a hydraulic excavator 1 according to the embodiment will be described with reference to the drawings. Figure 1 It is a rear perspective view of the hydraulic excavator 1 . Figure 2 It is a left perspective view of the exterior cover 13 . Figure 3 It is a right front perspective view of the exterior cover 13 . Figure 4 It is a right perspective view of the exterior cover 13 . Figure 5 It is a left front perspective view of the exterior cover 13 .

[0031] The hydraulic excavator 1 is an example of the "construction machine" of 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 working device 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 constitute the main body parts of the hydraulic excavator 1. The first GNSS antenna 16 and the second GNSS antenna 17 are each an example of the "antenna" of the present disclosure.

[0032] The lower traveling body 10 has a pair of crawlers (in Figure 1 (Only the left crawler track is shown in the figure). The hydraulic excavator 1 can move forward, backward, left and right by rotating the pair of crawler tracks.

[0033] The upper revolving structure 11 is disposed on the lower traveling structure 10. The upper revolving structure 11 is rotatable. The upper revolving structure 11 supports a counterweight 12, an exterior cover 13, a working device 18, and a cab 19.

[0034] The counterweight 12 is disposed at the rear end of the upper rotating body 11. The counterweight 12 is formed by, for example, placing concrete or the like in a steel plate box. The counterweight 12 is used to maintain the balance of the vehicle body during excavation work or the like.

[0035] 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 operator's cab 19. Figures 2 to 4 As shown, 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 described later.

[0036] like Figure 1 As shown, the exterior cover 13 includes a vehicle body upper cover 20, a left side cover 30, and a right side cover 40. In the present embodiment, the vehicle body upper cover 20 is divided into a left upper cover 21, an engine cover 22, and a right upper cover 23.

[0037] like Figures 2 to 4 As shown, the equipment room 20S is located below the upper cover 20 of the vehicle body. A cooling device 26 such as a radiator and a cooling fan is arranged in the equipment room 20S (see Figure 2 ), engine and exhaust treatment device and other heat sources 28 (refer to Figure 3 ), auxiliary machinery such as hydraulic oil tank, hydraulic oil pump, fuel tank, etc. 29 (refer to Figure 4 ). The equipment room 20S is an example of the "storage space" of the present disclosure. Figure 2 The figure shows the state where the left side mask 30 is opened. Figure 3The diagram shows the state where the engine hood 22 is opened. Figure 4 The figure shows a state where the right side cover 40 is opened.

[0038] In the present embodiment, cooling device 26 is arranged under left upper cover 21 and engine cover 22 , heat source 28 is arranged under engine cover 22 and right upper cover 23 , and auxiliary machines 29 are arranged under right upper cover 23 .

[0039] like Figure 1 As shown, the left upper surface cover 21 is arranged on the left side of the engine cover 22. The left upper surface cover 21 is fixed to the support frame 27 by bolts and cannot be opened or closed.

[0040] like Figure 1 As shown, 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. Figure 3 As shown, the rear end of the hood 22 is supported by a hinge 22a in an openable and closable manner. The hinge 22a is connected to the hood 22 and the support frame 27. The hood 22 can be in the closed position (refer to Figure 1 ) and open position (refer to Figure 3 ) between opening and closing.

[0041] like Figure 1 As shown, the right upper surface cover 23 is arranged on the right side of the engine cover 22. The right upper surface cover 23 is fixed to the support frame 27 by bolts and cannot be opened or closed.

[0042] like Figure 1 As shown in FIG. 1 , the left side mask 30 is disposed at the lower left side of the left upper surface mask 21. The left side mask 30 covers the side (left side) of the equipment room 20S. Figure 2 As shown, the rear end of the left side mask 30 is supported by a hinge 30a so as to be openable and closable. The hinge 30a is connected to the left side mask 30 and the support frame 27. The left side mask 30 can be in the closed position (see Figure 1 ) and open position (refer to Figure 2 ) between opening and closing. The left side mask 30 has a locking mechanism 30b. By locking the latch of the locking mechanism 30b to the latch receiving member 27a installed on the support frame 27, the left side mask 30 can be locked in the closed position.

[0043] The right side mask 40 is arranged at the lower right side of the right upper surface mask 23. The right side mask 40 covers the side (right side) of the equipment room 20S. Like the left side mask 30, the rear end of the right side mask 40 is supported by a hinge (not shown) so as to be openable and closable. The right side mask 40 can be in a closed position and an open position (see Figure 4) between opening and closing. The right side mask 40 has a locking mechanism 40b. By locking the latch of the locking mechanism 40b to the latch receiving portion 27b installed on the support frame 27, the right side mask 40 can be locked in the closed position.

[0044] The left vehicle body upper surface frame 14 is arranged on the support frame 27. The left vehicle body upper surface frame 14 extends in the front-rear direction. The left vehicle body upper surface frame 14 is arranged on the left side of the vehicle body upper surface cover 20 (specifically, the left upper surface cover 21) and above the left side cover 30. The first GNSS antenna 16 is fixed to the left vehicle body upper surface frame 14. The left vehicle body upper surface frame 14 is an example of the "vehicle body upper surface frame" disclosed in the present invention.

[0045] The right vehicle body upper surface frame 15 is arranged on the support frame 27. The right vehicle body upper surface frame 15 extends in the front-rear direction. The right vehicle body upper surface frame 15 is arranged to the right of the vehicle body upper surface cover 20 (specifically, the right upper surface cover 23) and above the right side mask 40. A second GNSS antenna 17 is fixed to the right vehicle body upper surface frame 15. The right vehicle body upper surface frame 15 is an example of the "vehicle body upper surface frame" disclosed in the present invention.

[0046] The first GNSS antenna 16 is an antenna for GNSS (Global Navigation Satellite System). Figure 1 As shown, the first GNSS antenna 16 is fixed to the left vehicle body upper surface frame 14. At least a portion of the first GNSS antenna 16 is arranged at a position higher than the left vehicle body upper surface frame 14. The first GNSS antenna 16 is arranged at the rear of the cab 19. The first GNSS antenna 16 is connected to the controller 19a in the cab 19 via the first harness H1. The first harness H1 extends from the first GNSS antenna 16 to the right front. The fixing structure of the first GNSS antenna 16 will be described later.

[0047] The second GNSS antenna 17 is an antenna for GNSS. Figure 1 As shown, the second GNSS antenna 17 is fixed to the right vehicle body upper surface frame 15. At least a portion of the second GNSS antenna 17 is arranged above the right vehicle body upper surface frame 15. The second GNSS antenna 17 is arranged on the opposite side of the first GNSS antenna 16 with respect to the center of the vehicle width direction of the hydraulic excavator 1. The second GNSS antenna 17 is connected to the controller 19a in the cab 19 via the second harness H2. The second harness H2 extends from the second GNSS antenna 17 to the left front. The fixing structure of the second GNSS antenna 17 will be described later.

[0048] like Figure 1As shown, the first GNSS antenna 16 is arranged on the left side of the vehicle body upper cover 20, and the second GNSS antenna 17 is arranged on the right side of the vehicle body upper cover 20. As a result, the distance between the first GNSS antenna 16 and the second GNSS antenna 17 in the vehicle width direction can be ensured, so that the accuracy of the vehicle body orientation calculation result using the positioning results of each antenna can be improved.

[0049] In addition, if Figure 1 As shown, the first GNSS antenna 16 is arranged at the rear end of the left vehicle body upper surface frame 14, and the second GNSS antenna 17 is arranged at the front end of the right vehicle body upper surface frame 15. As a result, the distance between the first GNSS antenna 16 and the second GNSS antenna 17 can be further ensured not only in the vehicle width direction but also in the front-rear direction, so the accuracy of the vehicle body orientation calculation result using the positioning results of each antenna can be further improved.

[0050] Moreover, if Figure 1 As shown, the first GNSS antenna 16 disposed behind the cab 19 is disposed at the rear end of the left vehicle body upper surface frame 14. As a result, the first GNSS antenna 16 can be kept away from the cab 19, and the antenna efficiency of the first GNSS antenna 16 can be improved. As a result, the positioning accuracy of the first GNSS antenna 16 can be improved.

[0051] The working implement 18 is swingably mounted on the front end portion of the upper swing structure 11 . The working implement 18 is disposed on the side of the operator's cab 19 .

[0052] The operator's cab 19 is disposed on the upper rotating body 11. The operator's cab 19 is disposed in front of the exterior cover 13. The operator's cab 19 is disposed on the side of the working device 18. A driver's seat and an operating unit may also be disposed in the operator's cab 19.

[0053] (First GNSS antenna 16)

[0054] The fixing structure of the first GNSS antenna 16 will be described with reference to the drawings. Figure 6 is a rear perspective view of the first GNSS antenna 16 . Figure 7 It is a cross-sectional view of the fixing structure of the first GNSS antenna 16 . Figure 8 It is an exploded perspective view of the fixing structure of the first GNSS antenna 16 . Fig. 9 This is a bottom perspective view of the fixing structure of the first GNSS antenna 16 as viewed from the inside of the equipment room 20S.

[0055] like Figure 6 and Figure 7As shown, 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 disposed above the left vehicle body upper surface frame 14. The lower portion 16b is a portion of the first GNSS antenna 16 inserted into the opening 14a of the left vehicle body upper surface frame 14.

[0056] The upper portion 16 a is conical, so that it is difficult to grab the upper portion 16 a of the first GNSS antenna 16 by hand or with a tool, thereby preventing the first GNSS antenna 16 from being removed from the outer side of the left vehicle body upper surface frame 14 .

[0057] like Figure 7 As shown, the lower portion 16b has an outer surface 16T that is opposite to the inner surface 14T of the opening portion 14a of the left vehicle body upper surface frame 14. When the first GNSS antenna 16 is rotated around the first coupling member 51 described later, the outer surface 16T of the lower portion 16b abuts against the inner surface 14T of the opening portion 14a. Therefore, since the first GNSS antenna 16 itself cannot be rotated, the first GNSS antenna 16 can be prevented from being removed from the outer side of the left vehicle body upper surface frame 14.

[0058] like Figures 7 to 9 As shown, the first GNSS antenna 16 is fixed to the left vehicle body upper surface frame 14 from the inside of the equipment room 20S by a fixing portion 50. In the present disclosure, the GNSS antenna is fixed to the frame, which means that the GNSS antenna installed on the frame can be removed from the inside of the frame and cannot be removed from the outside of the frame.

[0059] In the present embodiment, the fixing portion 50 includes a first coupling member 51 , a first seat 52 , a second coupling member 53 , and a second seat 54 .

[0060] The first coupling component 51 fixes the first GNSS antenna 16 to the left vehicle body upper surface frame 14. The first coupling component 51 is fastened to the first GNSS antenna 16 from the inside of the equipment room 20S. The first coupling component 51 is inserted through the insertion hole 52a of the first seat 52. By fastening the first coupling component 51 to the first GNSS antenna 16, the first GNSS antenna 16 is coupled to the first seat 52. The first coupling component 51 is fastened from below the first GNSS antenna 16. The first coupling component 51 is fastened to the lower part of the first GNSS antenna 16. In the present embodiment, one first coupling component 51 is fastened to the center of the first GNSS antenna 16, but the number and arrangement of the first coupling components 51 can be appropriately changed. In addition, in the present embodiment, a bolt is used as the first coupling component 51, but the first coupling component 51 can be used as long as it can couple the first GNSS antenna 16 to the first seat 52. For example, the first coupling component 51 can be either a clamp or a joint formed by welding.

[0061] The first seat 52 is a plate-shaped component. The first seat 52 is arranged below the opening 14a of the left vehicle body upper surface frame 14. The first GNSS antenna 16 is arranged on the first seat 52. The first seat 52 is arranged roughly 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 cutout 52c. The first coupling component 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 component 53 is fastened to the nut 52b. The cutout 52c is provided in order to allow the first wiring harness H1 to pass through the first GNSS antenna 16 side. In the present embodiment, the first wiring harness H1 extends from the first GNSS antenna 16 to the right front, so a cutout 52c is formed at the right front corner of the first seat 52.

[0062] The second combining component 53 combines the first seat 52 with the second seat 54. The second combining component 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. Thus, the second seat 54 is combined with the first seat 52. In the present embodiment, the three second combining components 53 are arranged in an L shape, but the number and arrangement of the second combining components 53 can be appropriately changed. In addition, in the present embodiment, bolts are used as the second combining components 53, but the second combining component 53 can be used as long as it can combine the first seat 52 with the second seat 54. For example, the second combining component 53 can be either a clamp or a joint formed by welding.

[0063] The second seat 54 is fixed to the left body upper surface frame 14. In this embodiment, the outer edge of the second seat 54 is welded to the inner surface of the left body upper surface frame 14, but the method of fixing the second seat 54 to the left body upper surface frame 14 is not particularly limited.

[0064] The first seat 52 is combined with the second seat 54 via the second combining member 53. The first seat 52 can be combined with the second seat 54 after the first GNSS antenna 16 is combined with the first seat 52, or before the first GNSS antenna 16 is combined with the first seat 52.

[0065] (Method for disassembling and assembling the first GNSS antenna 16)

[0066] The method of assembling and disassembling the first GNSS antenna 16 will be described with reference to the accompanying drawings.

[0067] First, the first and second disassembly methods of the first GNSS antenna 16 are described. The first GNSS antenna 16 does not need to be disassembled on a daily basis, but needs to be disassembled in the event of a malfunction, for example.

[0068] The first disassembly method is as follows. First, Figure 2As shown, unlock the left side mask 30 and open the left side mask 30 to the open position. Fig. 9 The first wire harness H1 is shown unplugged from the first GNSS antenna 16. Next, in the equipment room 20S, loosen Fig. 9 The first coupling member 51 shown is pulled out from the first GNSS antenna 16. Next, the first GNSS antenna 16 is lifted up from above the left vehicle body upper surface frame 14 and removed from the vehicle body. Next, the left side cover 30 is returned to the closed position and locked.

[0069] The second disassembly method is as follows. First, Figure 2 As shown, unlock the left side mask 30 and open the left side mask 30 to the open position. Fig. 9 The first wire harness H1 is shown unplugged from the first GNSS antenna 16. Next, in the equipment room 20S, loosen Fig. 9 The second coupling member 53 shown is pulled out from the second seat 54. Next, the first GNSS antenna 16 coupled with the first seat 52 is lifted from above the upper surface frame 14 of the left vehicle body and removed from the vehicle body. Next, the left side mask 30 is returned to the closed position and locked. Next, the first coupling member 51 is loosened and pulled out from the first GNSS antenna 16, thereby removing the first seat 52 from the first GNSS antenna 16.

[0070] Next, the first and second mounting methods of the first GNSS antenna 16 will be described.

[0071] The first installation method is as follows. First, Figure 6 As shown in FIG. 1 , the first GNSS antenna 16 is inserted into the opening 14a from above the left vehicle body upper surface frame 14. Figure 2 As shown, the left side mask 30 is unlocked and opened to the open position. Next, the first connection member 51 is fastened to the first GNSS antenna 16 through the insertion hole 52a of the first seat 52 from the inside of the equipment room 20S, thereby connecting the first seat 52 to the first GNSS antenna 16. Next, the first harness H1 is inserted into the first GNSS antenna 16 from the inside of the equipment room 20S. Next, the left side mask 30 is returned to the closed position and locked.

[0072] The second installation method is as follows. First, the first mounting member 51 is fastened to the first GNSS antenna 16 through the insertion hole 52a of the first mounting member 52, thereby mounting the first mounting member 52 and the first GNSS antenna 16. Next, the first GNSS antenna 16 mounted with the first mounting member 52 is inserted into the opening 14a from above the upper frame 14 of the left vehicle body. Figure 2As shown, the left side mask 30 is unlocked and opened to the open position. Next, the second coupling member 53 is fastened to the nut 52b of the first seat 52 from the inside of the equipment room 20S, thereby coupling the second seat 54 to the first seat 52. Next, the first harness H1 is inserted into the first GNSS antenna 16 from the inside of the equipment room 20S. Next, the left side mask 30 is returned to the closed position and locked.

[0073] Furthermore, as described above, the first GNSS antenna 16 is fixed to the left vehicle body upper surface frame 14 from the inside of the equipment room 20S by the fixing portion 50 , so the first GNSS antenna 16 cannot be removed or assembled without processing the first coupling component 51 or the second coupling component 53 from the inside of the equipment room 20S.

[0074] Furthermore, even if the hood 22 is opened to the open position, the fixing portion 50 of the first GNSS antenna 16 cannot be accessed because the cooling device 26 is arranged across the left upper surface cover 21 and the lower portion of the hood 22. Therefore, the first GNSS antenna 16 cannot be removed or attached unless the left side mask 30 is unlocked.

[0075] (Second GNSS Antenna 17)

[0076] The fixing structure of the second GNSS antenna 17 will be described with reference to the drawings. Fig.10 It is a rear perspective view of the second GNSS antenna 17 . Fig.11 It is a cross-sectional view of the fixing structure of the second GNSS antenna 17 . Fig.12 It is an exploded perspective view of the fixing structure of the second GNSS antenna 17 . Fig.13 This is a perspective view of the heat insulating material 65 as viewed from the inside of the equipment room 20S. Fig.14 It means that Fig.13 A bottom perspective view of the state where the first heat insulating member 65, the second heat insulating member 66 and the mounting member 67 are removed.

[0077] like Fig.10 as well as Fig.11 As shown, 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 disposed above the right vehicle body upper surface frame 15. The lower portion 17b is a portion of the second GNSS antenna 17 inserted into the opening 15a of the right vehicle body upper surface frame 15.

[0078] The upper portion 17 a is conical, so that it is difficult to grab the upper portion 17 a of the second GNSS antenna 17 by hand or with a tool, thereby preventing the second GNSS antenna 17 from being removed from the outside of the right vehicle body upper surface frame 15 .

[0079] like Fig.11As shown, the lower portion 17b has an outer surface 17T that faces the inner surface 15T of the opening 15a of the right vehicle body upper surface frame 15. When the second GNSS antenna 17 is rotated around the first coupling member 61 described later, the outer surface 17T of the lower portion 17b abuts against the inner surface 15T of the opening 15a. Therefore, the second GNSS antenna 17 itself cannot be rotated, and the second GNSS antenna 17 can be prevented from being removed from the outer side of the right vehicle body upper surface frame 15.

[0080] like Figures 11 to 14 As shown, the second GNSS antenna 17 is fixed to the right vehicle body upper surface frame 15 via a fixing portion 60 from the inside of the equipment room 20S.

[0081] In the present embodiment, the fixing portion 60 includes a first coupling member 61 , a first seat 62 , a second coupling member 63 , a second seat 64 , a first heat insulator 65 , a second heat insulator 66 , and a mounting member 67 .

[0082] The first coupling component 61 fixes the second GNSS antenna 17 to the right vehicle body upper surface frame 15. The first coupling component 61 is fastened to the second GNSS antenna 17 from the inside of the equipment room 20S. The first coupling component 61 is inserted through the insertion hole 62a of the first seat 62. By fastening the first coupling component 61 to the second GNSS antenna 17, the second GNSS antenna 17 is coupled to the first seat 62. The first coupling component 61 is fastened from below the second GNSS antenna 17. The first coupling component 61 is fastened to the lower part of the second GNSS antenna 17. In the present embodiment, one first coupling component 61 is fastened to the center of the second GNSS antenna 17, but the number and arrangement of the first coupling components 61 can be appropriately changed. In addition, in the present embodiment, a bolt is used as the first coupling component 61, but the first coupling component 61 can be used as long as it can couple the second GNSS antenna 17 to the first seat 62. For example, the first coupling component 61 can be either a clamp or a joint formed by welding.

[0083] The first seat 62 is a plate-shaped component. The first seat 62 is arranged below the opening 15a of the upper surface frame 15 of the right vehicle body. The second GNSS antenna 17 is arranged on the first seat 62. The first seat 62 is arranged roughly parallel to the upper surface frame 15 of the right vehicle body in the equipment room 20S. The first seat 62 has an insertion hole 62a, a nut 62b and a cutout 62c. The first coupling component 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 component 63 is fastened to the nut 62b. The cutout 62c is provided in order to allow the second wiring harness H2 to pass through the second GNSS antenna 17 side. In the present embodiment, the second wiring harness H2 extends from the second GNSS antenna 17 to the left front, so a cutout 62c is formed at the left front corner of the first seat 62.

[0084] The second combining component 63 combines the first seat 62 with the second seat 64. The second combining component 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. Thus, the second seat 64 is combined with the first seat 62. In the present embodiment, the three second combining components 63 are arranged in an L shape, but the number and arrangement of the second combining components 63 can be appropriately changed. In addition, in the present embodiment, bolts are used as the second combining components 63, but the second combining component 63 can be any component as long as it can combine the first seat 62 with the second seat 64. For example, the second combining component 63 can be either a clamp or a joint formed by welding.

[0085] The second seat 64 is fixed to the right vehicle body upper surface 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 surface frame 15, but the method of fixing the second seat 64 to the right vehicle body upper surface frame 15 is not particularly limited.

[0086] The first seat 62 is combined with the second seat 64 via the second combining member 63. The first seat 62 can be combined with the second seat 64 after the second GNSS antenna 17 is combined with the first seat 62, or before the second GNSS antenna 17 is combined with the first seat 62.

[0087] The first heat insulating member 65 and the second heat insulating member 66 are arranged between the second GNSS antenna 17 and the heat source 28 in the equipment room 20S. The first heat insulating member 65 is arranged below the second GNSS antenna 17. The second heat insulating member 66 is arranged on the side of the second GNSS antenna 17. The first heat insulating member 65 is formed with an insertion hole 65a for inserting the second harness H2. The first heat insulating member 65 and the second heat insulating member 66 are fixed to the mounting member 67. As the first heat insulating member 65 and the second heat insulating member 66, known heat insulating members can be used.

[0088] The mounting member 67 is mounted to the support member 68 by three bolts 67a. The support member 68 is welded to the right vehicle body upper surface frame 15. However, the method of fixing the support member 68 to the right vehicle body upper surface frame 15 is not particularly limited, and for example, a clamp or bolts may be used.

[0089] (Method for disassembling and assembling the second GNSS antenna 17)

[0090] The method of assembling and disassembling the second GNSS antenna 17 will be described with reference to the accompanying drawings.

[0091] The following describes the first and second disassembly methods of the second GNSS antenna 17. The second GNSS antenna 17 does not need to be disassembled on a daily basis, but needs to be disassembled in the event of a malfunction, for example.

[0092] The first disassembly method is as follows. First, Figure 4 As shown, unlock the right side mask 40 and open the right side mask 40 to the open position. Next, remove the Fig.13 Next, in the equipment room 20S, Fig.14 The second wire harness H2 is shown unplugged from the second GNSS antenna 17. Next, in the equipment room 20S, loosen Fig.14 The first coupling member 61 shown is pulled out from the second GNSS antenna 17. Next, the second GNSS antenna 17 is lifted up from above the right vehicle body upper surface frame 15 and removed from the vehicle body. Next, the right side mask 40 is returned to the closed position and locked.

[0093] The second disassembly method is as follows. First, Figure 4 As shown, unlock the right side mask 40 and open the right side mask 40 to the open position. Next, in the equipment room 20S, loosen the Fig.13 After the three bolts 67a shown are removed, the mounting member 67 is removed from the supporting member 68. Next, in the equipment room 20S, Fig.14 The second wire harness H2 is shown unplugged from the second GNSS antenna 17. Next, in the equipment room 20S, loosen Fig.14 The second coupling member 63 shown is pulled out from the second seat 64. Next, the second GNSS antenna 17 coupled with the first seat 62 is lifted from above the upper surface frame 15 of the right vehicle body and removed from the vehicle body. Next, the right side mask 40 is returned to the closed position and locked. Next, the first coupling member 61 is loosened and pulled out from the second GNSS antenna 17, thereby removing the first seat 62 from the second GNSS antenna 17.

[0094] Next, the first and second mounting methods of the second GNSS antenna 17 will be described.

[0095] The first installation method is as follows. First, Fig.10 As shown in FIG. 1 , the second GNSS antenna 17 is inserted into the opening 15a from above the upper frame 15 of the right vehicle body. Figure 4 As shown, the right side mask 40 is unlocked and opened to the open position. Next, the first coupling member 61 is fastened to the second GNSS antenna 17 through the insertion hole 62a of the first seat 62 from the inside of the equipment room 20S, thereby coupling the first seat 62 and the second GNSS antenna 17. Next, the second harness H2 is inserted into the second GNSS antenna 17 from the inside of the equipment room 20S. Next, as shown in FIG. Fig.13 As shown, the mounting member 67 to which the first heat insulating member 65 and the second heat insulating member 66 are attached is mounted on the supporting member 68. Next, the right side mask 40 is returned to the closed position and locked.

[0096] The second installation method is as follows. First, the first mounting member 61 is fastened to the second GNSS antenna 17 through the insertion hole 62a of the first mounting member 62, thereby mounting the first mounting member 62 and the second GNSS antenna 17 together. Next, the second GNSS antenna 17 coupled with the first mounting member 62 is inserted into the opening 15a from above the upper frame 15 of the right vehicle body. Figure 4 As shown, the right side mask 40 is unlocked and opened to the open position. Next, the second coupling member 63 is fastened to the nut 62b of the first seat 62 from the inside of the equipment room 20S, thereby coupling the second seat 64 to the first seat 62. Next, the second harness H2 is inserted into the second GNSS antenna 17 from the inside of the equipment room 20S. Next, as shown in FIG. Fig.13 As shown, the attachment member 67 to which the first heat insulating member 65 and the second heat insulating member 66 are attached is attached to the support member 68. Next, the right side mask 40 is returned to the closed position and locked.

[0097] In addition, as described above, the second GNSS antenna 17 is fixed to the right vehicle body upper surface frame 15 from the inside of the equipment room 20S by the fixing portion 60. Therefore, the second GNSS antenna 17 cannot be removed or assembled without processing the first coupling component 61 or the second coupling component 63 from the inside of the equipment room 20S.

[0098] Furthermore, even if the hood 22 is opened to the open position, the heat source 28 and the auxiliary machines 29 are arranged below the hood 22 and the right upper surface cover 23, and therefore cannot approach the fixing portion 60 of the second GNSS antenna 17. Therefore, the second GNSS antenna 17 cannot be removed or attached unless the lock of the right side mask 40 is unlocked.

[0099] (feature)

[0100] The hydraulic excavator 1 includes a left vehicle body upper surface frame 14, an equipment room 20S, and a fixing portion 50. The equipment room 20S is located below the left vehicle body upper surface frame 14. The fixing portion 50 fixes the first GNSS antenna 16 to the left vehicle body upper surface frame 14 from the inside of the equipment room 20S in such a manner that at least a portion of the first GNSS antenna 16 is arranged above the left vehicle body upper surface frame 14.

[0101] Therefore, the first GNSS antenna 16 can be prevented from being disassembled from the outside, and it is difficult to steal the first GNSS antenna 16. Therefore, it is not necessary to disassemble the first GNSS antenna 16 for storage after the work is completed. In addition, by repeatedly disassembling and assembling the first GNSS antenna 16, it is possible to suppress the degradation of the first harness H1. In addition, compared with the case where the first GNSS antenna 16 is arranged at the front end of the mast, it is not only easier to clear the height restriction during transportation, but also the risk of contact with surrounding structures can be reduced, and the reception performance can be suppressed from becoming unstable due to vibration.

[0102] In addition, the above effect can also be obtained by providing the hydraulic excavator 1 with a fixing part 60, which fixes the second GNSS antenna 17 to the right vehicle body upper surface frame 15 from the inside of the equipment room 20S so that at least a part of the second GNSS antenna 17 is arranged at a position higher than the right vehicle body upper surface frame 15.

[0103] (Variation of the embodiment)

[0104] The present invention is not limited to the above-described embodiments, and various modifications and changes can be made without departing from the scope of the present invention.

[0105] [Modification 1]

[0106] In the above-mentioned embodiment, although the hydraulic excavator is described as an example of a construction machine, the construction machine is not limited to this. For example, as the construction machine, an electric excavator, a wheel loader, etc. can be cited.

[0107] [Modification 2]

[0108] In the above embodiment, the first GNSS antenna 16 and the second GNSS antenna 17 are described as examples of antennas, but the antenna is not limited thereto. For example, the antenna may be a wireless antenna.

[0109] [Variation 3]

[0110] In the above embodiment, the fixing portion 50 includes the first coupling member 51 , the first seat 52 , the second coupling member 53 , and the second seat 54 , but the present invention is not limited thereto.

[0111] For example, the fixing portion 50 may be only one coupling member, such as the first coupling member 51. In this case, the first GNSS antenna 16 can be placed on the left vehicle body upper surface frame 14 and directly fixed to the left vehicle body upper surface frame 14 by the first coupling member 51 inserted through the left vehicle body upper surface frame 14. In this case, the first GNSS antenna 16 is entirely arranged above the left vehicle body upper surface frame 14. However, the fixing portion 50 in this case preferably has a structure that prevents the first GNSS antenna 16 from rotating, a structure that the first coupling member 51 also rotates in conjunction with the first GNSS antenna 16 when the first GNSS antenna 16 is rotated from the outside, and other structures that prevent the first GNSS antenna 16 from falling off even if the first GNSS antenna 16 itself is rotated.

[0112] Alternatively, the fixing portion 50 may be composed of a coupling member and a seat. In this case, the first GNSS antenna 16 can be placed on a seat and can be fixed to the seat by inserting a coupling member through the seat. In this case, as in the above embodiment, a portion of the first GNSS antenna 16 is arranged above the left vehicle body upper surface frame 14.

[0113] [Variation 4]

[0114] In the above embodiment, the hydraulic excavator 1 is initially provided with the first GNSS antenna 16 , but the first GNSS antenna 16 can be retrofitted.

[0115] For example, Fig.15 As shown, when the hydraulic excavator 1 does not include the first GNSS antenna 16, the opening 14a of the left vehicle body upper surface frame 14 is blocked by the cover 14b. When the first GNSS antenna 16 is newly installed, the first GNSS antenna 16 can be installed as described in the above embodiment after removing the cover 14b.

[0116] (Note 1)

[0117] A construction machine comprises: a vehicle body upper surface frame; a storage space located below the vehicle body upper surface frame; and a fixing portion that fixes the antenna to the vehicle body upper surface frame from the inside of the storage space in a manner that at least a portion of the antenna is arranged above the vehicle body upper surface frame.

[0118] (Note 2)

[0119] The construction machine according to Supplementary Note 1, wherein the fixing portion includes a first connecting member for fixing the antenna to an upper surface frame of the vehicle body.

[0120] (Note 3)

[0121] The construction machine according to Supplementary Note 2, wherein the fixing portion includes a seat on which the antenna is arranged, and the first connecting member fixes the antenna to the vehicle body upper surface frame via the seat.

[0122] (Note 4)

[0123] According to the engineering machinery described in Note 3, the seat includes a first seat for configuring the antenna and a second seat fixed to the upper surface frame of the vehicle body, the first combining component combines the antenna with the first seat, and the fixing part also includes a second combining component that combines the first seat with the second seat.

[0124] (Note 5)

[0125] An engineering machine according to any one of Notes 2 to 4, wherein the antenna has a lower portion inserted into an opening of an upper surface frame of the vehicle body, and when the antenna is rotated around the first coupling component, an outer surface of the lower portion abuts against an inner surface of the opening.

[0126] (Note 6)

[0127] The construction machine according to any one of Supplementary Notes 1 to 5, wherein an upper portion of the antenna disposed above the upper surface frame of the vehicle body is cone-shaped.

[0128] (Note 7)

[0129] The construction machine according to any one of Supplementary Notes 1 to 6, wherein the fixing portion further includes a heat insulating material disposed between the antenna and a heat source in the accommodation space.

[0130] (Note 8)

[0131] The construction machine according to any one of Supplementary Notes 1 to 6, wherein the exterior cover includes a side cover covering a side of the storage space, and the side cover is openable and closable and can be locked in a closed position.

[0132] Description of Reference Numerals

[0133] 1…Hydraulic excavator, 13…Exterior cover, 14…Left vehicle body upper surface frame, 14a…Opening, 14T…Inner surface, 15…Right vehicle body upper surface frame, 15a…Opening, 15T…Inner surface, 16…First GNSS antenna, 16T…Outer surface, 17…Second GNSS antenna, 17T…Outer surface, 19…Operation room, 20…Vehicle body upper surface cover, 20S…Equipment room, 21…Left upper surface cover, 22…Engine cover, 23…Right upper surface cover, 30…Left side cover, 30b…Locking mechanism, 40…Right side cover, 40b…Locking mechanism, 50…Fixing part, 51…First connecting member, 52…First seat, 53…Second connecting member, 54…Second seat, 60…Fixing part, 61…First connecting member, 62…First seat, 63…Second connecting member, 64…Second seat, H1…First wiring harness, H2…Second wiring harness

Claims

1. A construction machine, characterized in that: have: Upper surface frame of the vehicle body; A receiving space located below the upper surface frame of the vehicle body; A fixing portion fixes the antenna to the vehicle body upper surface frame from the inside of the storage space so that at least a portion of the antenna is disposed above the vehicle body upper surface frame.

2. The construction machinery according to claim 1, characterized in that: The fixing portion includes a coupling component for fixing the antenna to the upper surface frame of the vehicle body.

3. The construction machinery according to claim 2, characterized in that: The fixing part includes a seat for configuring the antenna. The coupling component fixes the antenna to the upper surface frame of the vehicle body via the seat.

4. The construction machine according to claim 3, characterized in that: The seat includes a first seat for configuring the antenna and a second seat fixed to a frame on the upper surface of the vehicle body. The combining component includes a first combining component for combining the antenna with the first seat and a second combining component for combining the first seat with the second seat.

5. The construction machine according to claim 2, characterized in that: The antenna has a lower portion inserted into an opening of the upper surface frame of the vehicle body. When the antenna is rotated about the first coupling member, the outer surface of the lower portion comes into contact with the inner surface of the opening.

6. The construction machine according to claim 1, characterized in that: The upper portion of the antenna, which is arranged above the vehicle body upper surface frame, has a cone shape.

7. The construction machine according to claim 1, characterized in that: The fixing portion further includes a heat insulator disposed between the antenna and a heat source in the storage space.

8. The construction machine according to claim 1, characterized in that: The exterior cover includes a side cover covering the side of the storage space. The side covers can be opened and closed and can be locked in a closed position.

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