Intelligent module building frame of weeding robot

Abstract

The utility model discloses a weeding robot intelligent module erecting frame which comprises a weeding machine, the periphery of the weeding machine is movably covered with a carrying frame, a bearing plate is rotatably installed in the middle of the top of the carrying frame, an adjusting rod is rotatably installed on one side of the bearing plate, a sleeve is rotatably installed at the front end of the top of the carrying frame, and the adjusting rod is slidably installed in the sleeve. A limiting piece abutting against the adjusting rod is rotationally installed on one side of the sleeve, a bearing seat is movably installed at the front end of the bearing plate through a fixing piece, an installation seat is slidably installed on one side of the bearing seat through an adjusting mechanism, and an identification camera is fixedly installed on the top of the installation seat. The recognition camera, the driving control box, the touch screen terminal and the antenna can automatically control the weeding machine to work in the hillside orchard environment, labor cost is reduced, and weeding efficiency is improved; the weeding machine is covered with the protective frame, damage caused by collision is avoided, and the weeding machine can be conveniently used in orchards in various severe terrain environments.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to an intelligent module rack for a weeding robot. Background Art

[0002] An agricultural weeding machine is a weeding device specifically used for orchards and large-scale crop planting areas. These machines can significantly improve the growth environment of crops, reduce competition by removing weeds, and thus increase the yield and quality of crops.

[0003] A weeding device generally includes a machine body, a weeding module, a traveling module, and a driving module. When weeding is required, the driving module drives the traveling module to move in the orchard. While moving, the driving module also drives the weeding module to weed the orchard.

[0004] However, in the existing weeding devices, there is a lack of an anti-collision system. Therefore, during the weeding operation, the personal safety of the operators cannot be guaranteed, and at the same time, the device itself will also be damaged. In addition, the weeding device requires manual observation and manual control to perform the weeding operation, which not only increases the labor intensity of the operators, but also has a low degree of intelligence, resulting in a low weeding efficiency of the weeding device. Summary of the Utility Model

[0005] In view of the above situation, to overcome the defects of the prior art, the purpose of the present utility model is to provide an intelligent module rack for a weeding robot, which effectively solves the problems that in the existing weeding devices, there is a lack of an anti-collision system, so the personal safety of the operators cannot be guaranteed during the weeding operation, and at the same time, the device itself will also be damaged. In addition, the weeding device requires manual observation and manual control to perform the weeding operation, which not only increases the labor intensity of the operators, but also has a low degree of intelligence, resulting in a low weeding efficiency of the weeding device.

[0006] The technical solution it adopts is that an intelligent module rack for a weeding robot includes a weeding machine. A carrier is movably sleeved outside the weeding machine. A support plate is rotatably installed at the middle of the top of the carrier. An adjusting rod is rotatably installed on one side of the support plate. A sleeve is rotatably installed at the front end of the top of the carrier. The adjusting rod is slidably installed in the sleeve. A limiting member that abuts against the adjusting rod is rotatably installed on one side of the sleeve. A support seat is movably installed at the front end of the support plate through a fixing member. An installation seat is slidably installed on one side of the support seat through an adjusting mechanism. An identification camera is fixedly installed on the top of the installation seat.

[0007] A control receiving mechanism is also installed on the top of the carrier, and the control receiving mechanism is used to receive feedback signals.

[0008] Preferably, the adjusting mechanism includes two rotating shafts. The two rotating shafts are installed on one side of the mounting base. One of the rotating shafts is rotatably installed on one side of the supporting base. An arc-shaped groove is formed on one side of the supporting base. The other rotating shaft is slidably installed in the arc-shaped groove. Nuts that abut against the supporting base are threadedly installed on both sides of the two rotating shafts.

[0009] Preferably, the carrier frame includes a protective frame. The front end of the protective frame is rotatably installed at the front end of the weeding machine through a shaft frame rod. A positioning frame is installed at the bottom of the rear part of the weeding machine. A U-shaped buckle is arranged on one side of the protective frame. A bottom fixing bolt is installed on one side of the U-shaped buckle, and the bottom fixing bolt penetrates and is installed on one side of the positioning frame.

[0010] Preferably, the carrier frame further includes a main support plate and a front support plate. The two sides of the main support plate and the front support plate are installed on the top of the protective frame through a buckle assembly. A U-shaped frame is installed on the top of the main support plate. A first shaft rod is installed on the top of the U-shaped frame. The supporting plate is rotatably installed around the first shaft rod. A second shaft rod is installed on one side of the front support plate. One side of the sleeve is rotatably installed around the second shaft rod. A longitudinal pull arm is also movably installed on one side of the first shaft rod. A plurality of screws are installed on one side of the longitudinal pull arm to install a clamping plate. The longitudinal pull arm and the clamping plate respectively clamp the outside of the protective frame.

[0011] Preferably, the buckle assembly includes a male buckle and a female buckle. A second bolt is installed between the male buckle and the female buckle. The male buckle and the female buckle respectively clamp the outside of the protective frame. An adjustment slot hole is formed on one side of the male buckle. An edge end bolt is slidably installed in the adjustment slot hole. The edge end bolt is installed on one side of the main support plate and the front support plate.

[0012] Preferably, the control receiving mechanism includes two antennas. The two antennas are snap-fitted and installed on both sides of the main support plate. A positioning seat is installed on one side of the front support plate. A drive control box is installed on the top of the positioning seat. A machine end universal joint head is installed in the middle of the longitudinal pull arm. Two arc-shaped sleeves are rotatably installed around the periphery of the top end of the machine end universal joint head. A fastening bolt is installed between the two arc-shaped sleeves. The two arc-shaped sleeves are rotatably installed on one side away from the machine end universal joint head with a screen end universal joint head. A touch screen terminal is installed on the top of the screen end universal joint head. The two antennas, the drive control box, the touch screen terminal and the identification camera are electrically connected.

[0013] Preferably, the limiting member is a connecting rod bolt. The connecting rod bolt is threadedly installed on one side of the sleeve, and the connecting rod bolt abuts against one side of the adjusting rod.

[0014] Preferably, the fixing member is a fixing bolt, the fixing bolt is installed through one side of the supporting seat, a plurality of bolt holes are formed in one side of the supporting plate, and the fixing bolt is installed in the bolt holes.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The recognition camera, the drive control box touch screen terminal and the antenna of the present utility model can realize the automatic control of the weeding machine to operate in the mountain orchard environment, reduce the labor cost and increase the weeding efficiency; meanwhile, a protective frame is arranged outside the weeding machine to avoid damage caused by collision, and moreover, the angle position of the recognition camera can be adjusted through mechanisms such as the supporting plate, the supporting seat and the mounting seat, so as to be used in orchards with various harsh terrain environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the first perspective of the intelligent module rack of the weeding robot of the present utility model.

[0018] Figure 2 is a schematic structural diagram of the carrier and the control receiving mechanism of the present utility model.

[0019] Figure 3 is a schematic structural diagram of the carrier of the present utility model.

[0020] Figure 4 is a schematic structural diagram of the supporting plate of the present utility model.

[0021] Figure 5 is a schematic structural diagram of the supporting seat of the present utility model.

[0022] Figure 6 is a schematic structural diagram of the arc-shaped sleeve of the present utility model.

[0023] Explanation of the reference numerals in the schematic diagram:

[0024] 1. Weeding machine;

[0025] 2. Carrier; 21. Protective frame; 22. Positioning frame; 23. U-shaped buckle; 24. Bottom fixing bolt; 25. Axle frame rod;

[0026] 3. Supporting plate; 31. Adjusting rod; 32. Sleeve; 33. Link bolt; 34. Fixing bolt; 35. Bolt hole;

[0027] 4. Supporting seat; 41. Mounting seat; 42. Recognition camera; 43. Rotating shaft; 44. Arc-shaped groove; 45. Nut;

[0028] 5. Main support plate; 51. Front support plate; 52. U-shaped frame; 53. First shaft rod; 54. Second shaft rod; 55. Longitudinal tension arm; 56. Clamp plate;

[0029] 6. Male buckle; 61. Female buckle; 62. Adjusting slot; 63. Edge end bolt;

[0030] 7. Antenna; 71. Positioning seat; 72. Drive control box; 73. Machine end universal shaft head; 74. Arc-shaped sleeve; 75. Screen end universal shaft head; 76. Touch screen terminal; 77. Fastening bolt. Detailed implementation manners

[0031] 1. Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Provided by Figures 1 to 2 There is a smart module rack for a weeding robot, including a weeding machine 1, a carrier 2, a supporting plate 3, an adjusting rod 31, a sleeve 32, a limiting member, a fixing member, a supporting seat 4, an adjusting mechanism, a mounting seat 41, an identification camera 42 and a control receiving mechanism.

[0033] Specifically, the drive module inside the weeding machine 1 drives the traveling module to move in the orchard. While moving, the drive module also drives the weeding module (generally using blade rotation) to cut and break the grass.

[0034] The carrier 2 includes a protective frame 21, shaft frame rods 25, a positioning frame 22, a U-shaped buckle 23 and bottom fixing bolts 24. There are two shaft frame rods 25, and the two shaft frame rods 25 are respectively installed on both sides of the front end of the chassis of the weeding machine 1. The front end of the protective frame 21 is rotatably installed on both sides of the front end of the chassis of the weeding machine 1 through the shaft frame rods 25. The positioning frame 22 is installed at the tail of the chassis of the weeding machine 1. The U-shaped buckle 23 is arranged at the bottom of the rear end of the protective frame 21. The bottom fixing bolts 24 are threadedly installed on one side of the positioning frame 22, and the U-shaped buckle 23 is installed at both ends of the bottom fixing bolts 24. More specifically, the protective frame 21 covers the periphery of the weeding machine 1 to wrap and protect the weeding machine 1 to avoid damage to the weeding machine 1 caused by accidental collision. The front end of the protective frame 21 can rotate through the shaft frame rods 25; during use, the bottom fixing bolts 24 install the rear end of the protective frame 21 on the positioning frame 22, and when refueling is required, remove the bottom fixing bolts 24 to separate the U-shaped buckle 23 from the positioning frame 22, and then the protective frame 21 can be lifted, and the protective frame 21 rotates around the shaft frame rods 25.

[0035] Provided by Figures 2 to 3 There is also, the carrier 2 further includes a main support plate 5, a front support plate 51, a buckle assembly, a U-shaped frame 52, a first shaft rod 53, a second shaft rod 54, a longitudinal tension arm 55 and a clamping plate 56.

[0036] Specifically, four groups of buckle assemblies are provided, and both ends of the main support plate 5 and the front support plate 51 are respectively mounted on the protective frame 21 through four groups of buckle assemblies. The following is a detailed introduction to one of the buckle assemblies:

[0037] More specifically, the buckle assembly includes a male buckle 6, a female buckle 61, a second bolt, an adjustment slot 62 and a side end bolt 63. More specifically, the male buckle 6 and the female buckle 61 are in a semi-arc structure, the male buckle 6 and the female buckle 61 are clamped on the outside of the protective frame 21 by the second bolt, the adjustment slot 62 is provided on one side of the male buckle 6, the side end bolt 63 is slidably installed in the adjustment slot 62, and the side end bolt 63 is installed at one end of the main support plate 5 or the front support plate 51; specifically, the four male buckles 6 are respectively installed at the two ends of the main support plate 5 and the front support plate 51 by four side end bolts 63, and then the male buckle 6 and the female buckle 61 are clamped on the top of the protective frame 21 by the second bolt.

[0038] By loosening the second bolt, the installation position of the male buckle 6 and the female buckle 61 on the top of the protective frame 21 can be adjusted, so that the longitudinal position of the main support plate 5 and the front support plate 51 can be adjusted; by loosening the side end bolt 63, the side end bolt 63 can slide in the adjustment slot 62, so that the lateral position of the main support plate 5 and the front support plate 51 can be adjusted.

[0039] In addition, the U-shaped frame 52 is installed on the top of the main support plate 5, the first shaft rod 53 is installed through the U-shaped frame 52, and the supporting plate 3 is rotatably installed on the outer periphery of the first shaft rod 53, the adjusting rod 31 is rotatably installed on one side of the supporting plate 3, the second shaft rod 54 is installed through the side of the front support plate 51, one side of the sleeve 32 is rotatably installed on the outer periphery of the second shaft rod 54, and the adjusting rod 31 is slidably installed in the sleeve 32, the limiting member is a connecting rod bolt 33, the connecting rod bolt 33 is threadedly installed on one side of the sleeve 32, and one end of the connecting rod bolt 33 abuts against one side of the adjusting rod 31. Specifically, the adjusting rod 31 and the sleeve 32 support the supporting plate 3.

[0040] More specifically, the adjusting rod 31 is extended or retracted into the sleeve 32, and the adjusting rod 31 drives the supporting plate 3 to rotate around the axis of the first shaft 53, so as to adjust the angle of the supporting plate 3. After the adjustment is completed, the connecting rod bolt 33 is tightened to press against the adjusting rod 31 to limit and fix the adjusting rod 31.

[0041] In addition, the longitudinal arm 55 is rotatably mounted on the periphery of the first shaft 53, and the side of the longitudinal arm 55 away from the first shaft 53 is clamped to the rear side of the top of the protective frame 21 by screws with the clamping plate 56.

[0042] Depend on Figures 3 to 5Given that the important fixing part is the fixing bolt 34. The fixing bolt 34 is installed through one side of the supporting seat 4. A plurality of bolt holes 35 are formed in one side of the supporting plate 3. The fixing bolt 34 is installed in the bolt holes 35. The supporting seat 4 is installed on one side of the fixing bolt 34. Specifically, by installing the fixing bolt 34 in the bolt holes 35 at different positions, the position of the supporting seat 4 at the front end of the supporting plate 3 can be adjusted.

[0043] The adjusting mechanism is installed on one side of the supporting seat 4. The adjusting mechanism includes two rotating shafts 43, an arc-shaped groove 44 and four nuts 45. Specifically, one of the rotating shafts 43 is rotatably installed on one side of the supporting seat 4, and the mounting seat 41 is rotatably installed on one side of this rotating shaft 43; the arc-shaped groove 44 is formed in one side of the supporting seat 4, and the other rotating shaft 43 is installed on one side of the supporting seat 4, and this rotating shaft 43 is slidably installed in the arc-shaped groove 44. The four nuts 45 are respectively installed on both sides of the two rotating shafts 43, and the four nuts 45 respectively abut against both sides of the supporting seat 4. The recognition camera 42 is installed on the top of the mounting seat 41. More specifically, loosen the nuts 45 to make the rotating shaft 43 slide in the arc-shaped groove 44, so that the mounting seat 41 rotates around the rotating shaft 43, and then adjust the angle of the mounting seat 41 on the supporting seat 4. The mounting seat 41 drives the angle of the recognition camera 42, which is convenient for orchards in different environments and is suitable for recognizing grass or other things at different heights.

[0044] Consisted of Figure 1 , Figure 2 and Figure 6 Given that finally, the control receiving mechanism is installed on the top of the main support plate 5. The control receiving mechanism includes two antennas 7, a positioning seat 71, a drive control box 72, a machine-end universal joint head 73, two arc-shaped sleeves 74, a fastening bolt 77, a screen-end universal joint head 75 and a touch screen terminal 76.

[0045] Specifically, the two antennas 7 are symmetrically installed on both sides of the top of the main support plate 5. The positioning seat 71 is installed on one side of the front support plate 51. The drive control box 72 is installed on the top of the positioning seat 71. The machine-end universal joint head 73 is installed in the middle of the longitudinal pull arm 55. The two arc-shaped sleeves 74 are installed together through the fastening bolt 77, and the two arc-shaped sleeves 74 are sleeved on the periphery of the top end of the machine-end universal joint head 73. The screen-end universal joint head 75 is sleeved inside the top ends of the two arc-shaped sleeves 74. The touch screen terminal 76 is installed on the top of the screen-end universal joint head 75. The two antennas 7, the drive control box 72, the touch screen terminal 76 and the recognition camera 42 are electrically connected. Specifically, the touch screen terminal 76 can rotate through the machine-end universal joint head 73 and the screen-end universal joint head 75, and then adjust the angle.

[0046] More specifically, the recognition camera 42 recognizes the signal transmitted between the monitored external environment and the base station; the drive control box 72 is a smart small computer responsible for navigating and positioning to control the traveling route of the weeding machine 1; the touch screen terminal 76 is used to transmit signals to the control system inside the weeding machine 1; and the antenna 7 is used to receive the signals transmitted by the base station.

[0047] Beneficial effects obtained from the weeding machine 1, the carrier 2, the supporting plate 3, the adjusting rod 31, the sleeve 32, the limiting member, the fixing member, the supporting seat 4, the adjusting mechanism, the mounting seat 41, the recognition camera 42, and the control receiving mechanism: With the recognition camera 42, the drive control box 72, the touch screen terminal 76, and the antenna 7 of the present invention, the weeding machine 1 can be automatically controlled to operate in the mountain orchard environment, reducing labor costs and increasing weeding efficiency. At the same time, a protective frame 21 is provided outside the weeding machine 1 to prevent damage caused by collisions. Moreover, the angle position of the recognition camera 42 can be adjusted through mechanisms such as the supporting plate 3, the supporting seat 4, and the mounting seat 41, so as to be suitable for orchards in various harsh terrain environments.

[0048] When the present invention is in use, an unmanned aerial vehicle is used to draw an orchard map. The recognition camera 42 recognizes the orchard environment. The drive control box 72, based on the map drawn by the unmanned aerial vehicle and through the real-time detection by the recognition camera 42, then feeds back to the control system inside the weeding machine 1 through the touch screen terminal 76 to drive the weeding machine 1 to move and weed.

[0049] When the weeding machine 1 is working, the fixing bolt 24 at the bottom mounts the rear end of the protective frame 21 on the positioning frame 22. When the weeding machine 1 needs to be refueled, the fixing bolt 24 at the bottom is removed so that the U-shaped buckle 23 is separated from the positioning frame 22, and then the protective frame 21 can be lifted, and the protective frame 21 rotates around the shaft rod 25.

[0050] Adjusting method:

[0051] Extend or retract the adjusting rod 31 into the sleeve 32. The adjusting rod 31 drives the supporting plate 3 to rotate around the axis of the first shaft rod 53, so as to adjust the angle of the supporting plate 3. After the adjustment is completed, tighten the connecting rod bolt 33 to press against the adjusting rod 31 to limit and fix the adjusting rod 31, and then the angle of the recognition camera 42 can be adjusted.

[0052] The fixing bolt 34 is installed in the bolt holes 35 at different positions, and the position of the supporting seat 4 at the front end of the supporting plate 3 can be adjusted, so as to adjust the position of the recognition camera 42.

[0053] Loosen the nut 45 to allow the rotating shaft 43 to slide in the arc-shaped groove 44, so that the mounting seat 41 rotates around the rotating shaft 43, and then the angle of the mounting seat 41 on the supporting seat 4 is adjusted, and the mounting seat 41 drives the angle of the recognition camera 42.

[0054] Loosen the fastening bolt 77, and the clamping force of the two arc-shaped sleeves 74 on the machine-end universal shaft head 73 and the screen-end universal shaft head 75 is reduced, so that the two arc-shaped sleeves 74, the machine-end universal shaft head 73 and the screen-end universal shaft head 75 can rotate, thereby adjusting the angle of the touch screen terminal 76.

[0055] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A weeding robot intelligent module frame, characterized in that: The invention comprises a weeder (1), wherein the outer movable cover of the weeder (1) is provided with a carrier (2), a supporting plate (3) is rotatably mounted in the middle of the top of the carrier (2), an adjusting rod (31) is rotatably mounted on one side of the supporting plate (3), a sleeve (32) is rotatably mounted on the front end of the top of the carrier (2), the adjusting rod (31) is slidably mounted in the sleeve (32), a limiting member abutting against the adjusting rod (31) is rotatably mounted on one side of the sleeve (32), a supporting seat (4) is movably mounted on the front end of the supporting plate (3) via a fixing member, a mounting seat (41) is slidably mounted on one side of the supporting seat (4) via an adjusting mechanism, and an identification camera (42) is fixedly mounted on the top of the mounting seat (41); A control receiving mechanism is also installed on the top of the carrier (2), and the control receiving mechanism is used to receive feedback signals.

2. The intelligent module frame of a weeding robot according to claim 1, characterized in that: The adjustment mechanism comprises two rotating shafts (43), the two rotating shafts (43) being mounted on one side of a mounting seat (41), one of the rotating shafts (43) being rotatably mounted on one side of a supporting seat (4), one side of the supporting seat (4) being provided with an arc-shaped groove (44), and the other rotating shaft (43) being slidably mounted in the arc-shaped groove (44), and nuts (45) abutting against the supporting seat (4) being threadedly mounted on both sides of the two rotating shafts (43).

3. The intelligent module frame of a weeding robot according to claim 1, characterized in that: The carrier (2) comprises a protective frame (21), the front end of the protective frame (21) is rotatably mounted on the front end of the weeder (1) via an axle frame rod (25), a positioning frame (22) is mounted on the bottom of the rear part of the weeder (1), a U-shaped buckle (23) is provided on one side of the protective frame (21), a bottom fixing bolt (24) is mounted on one side of the U-shaped buckle (23), and the bottom fixing bolt (24) is installed through one side of the positioning frame (22).

4. The intelligent module frame of a weeding robot according to claim 3, characterized in that: The carrier (2) further comprises a main support plate (5) and a front support plate (51), both sides of the main support plate (5) and the front support plate (51) are mounted on the top of the protective frame (21) via a snap assembly, a U-shaped frame (52) is mounted on the top of the main support plate (5), a first shaft (53) is mounted on the top of the U-shaped frame (52), the support plate (3) is rotatably mounted on the periphery of the first shaft (53), a second shaft (54) is mounted on one side of the front support plate (51), one side of the sleeve (32) is rotatably mounted on the periphery of the second shaft (54), a longitudinal pull arm (55) is movably mounted on one side of the first shaft (53), a clamping plate (56) is mounted on one side of the longitudinal pull arm (55) via a plurality of screws, and the longitudinal pull arm (55) and the clamping plate (56) are respectively clamped on the outer side of the protective frame (21).

5. The intelligent module frame of a weeding robot according to claim 4, characterized in that: The buckle assembly comprises a male buckle (6) and a female buckle (61), a second bolt is installed between the male buckle (6) and the female buckle (61), the male buckle (6) and the female buckle (61) are respectively clamped on the outer side of the protective frame (21), an adjustment slot hole (62) is opened on one side of the male buckle (6), a side end bolt (63) is slidably installed in the adjustment slot hole (62), and the side end bolt (63) is installed on one side of the main support plate (5) and the front support plate (51).

6. The intelligent module frame of a weeding robot according to claim 4, characterized in that: The control receiving mechanism comprises two antennas (7), the two antennas (7) are mounted on both sides of the main support plate (5) by snap-fitting, a positioning seat (71) is mounted on one side of the front support plate (51), a driving control box (72) is mounted on the top of the positioning seat (71), a machine-end universal shaft head (73) is mounted in the middle of the longitudinal pulling arm (55), two arc sleeves (74) are rotatably mounted on the outer periphery of the top of the machine-end universal shaft head (73), a fastening bolt (77) is mounted between the two arc sleeves (74), a screen-end universal shaft head (75) is rotatably mounted on one side of the two arc sleeves (74) away from the machine-end universal shaft head (73), a touch screen terminal (76) is mounted on the top of the screen-end universal shaft head (75), and the two antennas (7), the driving control box (72), the touch screen terminal (76) and the recognition camera (42) are electrically connected.

7. The intelligent module frame of a weeding robot according to claim 1, characterized in that: The limiting member is a connecting rod bolt (33), the connecting rod bolt (33) is threadedly mounted on one side of the sleeve (32), and the connecting rod bolt (33) abuts against one side of the adjusting rod (31).

8. The intelligent module frame of a weeding robot according to claim 1, characterized in that: The fixing member is a fixing bolt (34), and the fixing bolt (34) is installed through one side of the supporting seat (4). One side of the supporting plate (3) is provided with a plurality of bolt holes (35), and the fixing bolt (34) is installed in the bolt holes (35).

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