Protective device for bridge crossing existing lines

Abstract

The invention relates to the technical field of bridge protection, and discloses a protection device for a bridge crossing an existing line. A plurality of first connecting mechanisms; a part of the protection mechanisms are connected with the universal bearing assembly through first connecting mechanisms, a plurality of square penetrating grooves are formed in the protection mechanisms, wind power conversion mechanisms are arranged in the square penetrating grooves, and the wind power conversion mechanisms are used for converting wind energy into kinetic energy; a plurality of power generation mechanisms; the device can be conveniently adjusted, mounted and dismounted according to the bridge construction process, a set of protection equipment is matched with the whole bridge building process, sufficient wind power resources above a bridge can be fully utilized for power generation through the energy conversion mechanism on the protection equipment, power fluctuation is monitored in real time in the process, and the power generation efficiency is improved. Whether sundries appear on the protection mechanism or not and the wind power are analyzed, and passing vehicles can be notified or warned in real time.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge protection, and more particularly to a bridge protection device for crossing an existing line. Background Art

[0002] In recent years, with the rapid development of my country's social economy, the transportation industry has also made great progress, especially the demand for economical and fast transportation methods has been increasing day by day.

[0003] However, in actual construction, in order to ease traffic pressure, it is necessary to build a large number of bridges across existing roads. In order to ensure the safety of the construction process and not affect the normal operation of existing roads, the relevant construction companies and construction units must fully solve the safety protection measures in their construction.

[0004] There are two common types of protective devices. One is a prefabricated protective isolation frame erected on both sides of the bridge construction area during construction to prevent falling objects from affecting vehicles running on the existing line during the bridge construction process. The other is a protective frame built on both sides of the bridge after the bridge construction is completed. The protective frame is mostly a prefabricated steel structure frame, mostly a fixed structure, and the grid gaps on it are large. It can only block objects larger than the grid gaps and cannot utilize the wind force at the bridge. Summary of the invention

[0005] The purpose of the present invention is to provide a bridge protection device across an existing line in order to solve the above-mentioned problem.

[0006] The present invention provides a bridge protection device for crossing an existing line, comprising: Universal bearing assembly; A plurality of connecting mechanisms 1, wherein the plurality of connecting mechanisms 1 can be detachably connected to the universal bearing assembly; A plurality of protection mechanisms, one part of which is connected to the universal bearing assembly through a connection mechanism one, and another part of the protection mechanism is connected to a connection mechanism two and a connection mechanism three, and the connection mechanism two and the connection mechanism three are used to connect the plurality of protection mechanisms to form an integral protection assembly, the protection mechanism is provided with a plurality of square through slots, and a plurality of the square through slots are provided with wind power conversion mechanisms inside, and the wind power conversion mechanisms are used to convert wind energy into kinetic energy, and the protection mechanism is provided with a plurality of laying channels, and the plurality of laying channels respectively penetrate the plurality of square through slots arranged vertically; A plurality of power generating mechanisms are respectively detachably connected to corresponding protective mechanisms and sequentially pass through one or more corresponding layout channels and extend into the universal bearing assembly. The power generating mechanisms are used to convert the kinetic energy generated by the wind power conversion mechanism into electrical energy and transmit it to an external energy storage device.

[0007] As a further optimization scheme of the present invention, the universal bearing assembly includes a prefabricated pipe fitting, a port plugging member detachably connected to the openings at both ends of the prefabricated pipe fitting, a plurality of through holes and a plurality of matching screw holes provided on the prefabricated pipe fitting, wherein the plurality of through holes are respectively provided in coordination with corresponding layout channels, and the plurality of matching screw holes are provided in coordination with a connecting mechanism.

[0008] As a further optimization scheme of the present invention, the connecting mechanism 1 includes an arc-shaped connecting portion, a platform connecting portion integrally formed with the arc-shaped connecting portion, and a plurality of screw holes 1 arranged on the arc-shaped connecting portion and the platform connecting portion, the screw hole 1 is arranged in coordination with the matching screw hole, and the protective mechanism is detachably connected to the platform connecting portion.

[0009] As a further optimization scheme of the present invention, the protective mechanism includes a protective plate, a plurality of screw holes respectively arranged at the four corners of the protective plate, and a plurality of through holes two arranged inside the protective plate. The plurality of through holes two are respectively connected with the corresponding square through grooves to form a laying channel. An annular slide groove is provided on the inner wall of the square through groove, and the annular slide groove is matched with the wind conversion mechanism.

[0010] As a further optimization solution of the present invention, the wind power conversion mechanism includes a pneumatic conversion component and a magnetic field generating component arranged in the pneumatic conversion component, and the pneumatic conversion component is movably connected to the inner wall of the square through slot.

[0011] As a further optimization scheme of the present invention, the pneumatic conversion assembly includes a rotating tube, two annular connectors respectively connected to the two ends of the rotating tube, and a plurality of fan blades fixedly connected to the outer circular surface of the rotating tube, the plurality of fan blades are distributed at equal angles, and a gap is provided between the fan blades and the square through grooves, and the annular connector is matched with the annular slide groove.

[0012] As a further optimization scheme of the present invention, the magnetic field generating assembly includes permanent magnet one and permanent magnet two fixedly connected to the inner circular surface of the rotating tube, the permanent magnet one and permanent magnet two are symmetrically distributed, and the polarity of permanent magnet one is opposite to that of permanent magnet two.

[0013] As a further optimization scheme of the present invention, the power generating mechanism includes a limit connecting plate detachably connected to the protective plate, a connecting rod fixedly connected to the limit connecting plate, an integrated circuit board connected to the other end of the connecting rod, and a hard wire electrically connected to the integrated circuit board, the hard wire is arranged in a U shape, and the length of the hard wire is greater than the height of the protective plate, the integrated circuit board is located inside the prefabricated pipe, and several of the integrated circuit boards are electrically connected to external energy storage equipment, and a seal is provided at one of the perforations.

[0014] As a further optimization solution of the present invention, the second connecting mechanism includes an I-shaped connecting piece and a plurality of screw holes three provided on the I-shaped connecting piece, and the screw holes three are provided in coordination with the screw holes two.

[0015] As a further optimization solution of the present invention, the connection mechanism three includes a C-shaped connection piece and a plurality of screw holes four provided on the C-shaped connection piece, and the screw holes four are provided in coordination with the screw holes two.

[0016] The beneficial effects of the present invention are as follows: the present invention can be conveniently adjusted, installed and disassembled according to the bridge construction process, and a set of protective equipment can be adapted to the entire bridge construction process. Moreover, through the energy conversion mechanism thereon, sufficient wind resources above the bridge can be fully utilized to generate electricity. In this process, power fluctuations can be monitored in real time to analyze whether there are debris on the protective mechanism and the size of the wind force, and passing vehicles can be notified or warned in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a matching view of the protection mechanism and the universal bearing assembly of the present invention; Figure 3 The present invention Figure 2 A magnified view of point A in FIG. Figure 4 The present invention Figure 2 A magnified view of point B in FIG. Figure 5 The present invention Figure 2 A magnified view of point C in FIG. Figure 6 The present invention Figure 2 A magnified view at D in FIG. Figure 7 The present invention Figure 2 A magnified view of point E in FIG. Figure 8 The present invention Figure 2 Magnified view at F in FIG. Fig. 9 The present invention Figure 1 Magnified view at G in FIG.

[0018] In the figure: 1. universal bearing assembly; 101. prefabricated pipe fitting; 102. port plugging member; 103. perforation one; 2. connection mechanism one; 201. arc-shaped connection part; 202. platform connection part; 203. screw hole one; 3. protection mechanism; 301. protection plate; 3010. screw hole two; 302. square through groove; 303. perforation two; 4. wind power conversion mechanism; 401. rotating pipe fitting; 402. annular connector; 403. fan blade; 404. permanent magnet one; 405. permanent magnet two; 5. power generation mechanism; 501. limit connection plate; 502. connecting rod; 503. integrated circuit board; 504. hard wire; 6. connection mechanism two; 601. I-shaped connection piece; 602. screw hole three; 7. connection mechanism three; 701. C-shaped connection piece; 702. screw hole four. DETAILED DESCRIPTION

[0019] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only intended to enable those skilled in the art to better understand and implement the subject matter described herein. In addition, the features described relative to some examples may also be combined in other examples.

[0020] like Figure 1-Figure 9 As shown, a protective device for a bridge across an existing line comprises: Universal bearing assembly 1; A plurality of connecting mechanisms 2, each of which can be detachably connected to the universal bearing assembly 1; A plurality of protection mechanisms 3, wherein a part of the protection mechanisms 3 is connected to the universal bearing assembly 1 through a connection mechanism 1 2, and a connection mechanism 2 6 and a connection mechanism 3 7 are connected between another part of the protection mechanisms 3 and one part of the protection mechanisms 3, and the connection mechanism 2 6 and the connection mechanism 3 7 are used to connect the plurality of protection mechanisms 3 to form an integral protection assembly, and the protection mechanisms 3 are provided with a plurality of square through slots 302, and a wind power conversion mechanism 4 is provided inside the plurality of square through slots 302, and the wind power conversion mechanism 4 is used to convert wind energy into kinetic energy, and the protection mechanisms 3 are provided with a plurality of laying channels, and the plurality of laying channels respectively penetrate the plurality of square through slots 302 arranged vertically; A plurality of power generating mechanisms 5 are detachably connected to corresponding protection mechanisms 3, and extend into the universal bearing assembly 1 after passing through one or more corresponding layout channels in turn. The power generating mechanisms 5 are used to convert the kinetic energy generated by the wind power conversion mechanism 4 into electrical energy and transmit it to an external energy storage device.

[0021] It should be noted that in the process of building a bridge across an existing line, the entire protective device can be conveniently installed and adjusted based on the progress of bridge construction and the specifications and construction design of the corresponding bridge. In the process of construction, the multiple connecting mechanisms 1-2 connected to the universal bearing assembly 1 can be adjusted so that the overall protective assembly composed of the multiple protective mechanisms 3 and the bridge plane are distributed at an obtuse angle. This method can not only provide a larger construction space for the bridge construction process, but also, when building materials fall onto the protective mechanism 3, the obtuse angle layout can be used to prevent the building materials from moving to the outer side of the protective mechanism 3, but instead move to the bridge under their own gravity. Even if the protective area rolls down and goes through a buffering process with a large obtuse angle, it will not cause a significant impact on the construction personnel or equipment on the bridge. After the bridge is built, the connection position of the connecting mechanism 2 and the universal bearing assembly 1 can be adjusted, so that the overall protective assembly composed of multiple protective mechanisms 3 is vertically distributed with the bridge. This method can not only effectively increase the protection height, but also effectively increase the wind conversion coverage area of ​​the overall protective assembly above the bridge, thereby effectively increasing the wind energy utilization rate of the overall protective assembly, thereby effectively reducing the loss of the original electric energy, and providing sufficient renewable energy for the lighting facilities and warning facilities that can be assembled on the protective mechanism 3.

[0022] In an optional embodiment of the present invention, Figure 2 and Figure 7 As shown, the universal bearing assembly 1 includes a prefabricated pipe 101, a port plugging member 102 detachably connected to the openings at both ends of the prefabricated pipe 101, a plurality of through holes 103 and a plurality of matching screw holes provided on the prefabricated pipe 101, the plurality of through holes 103 are respectively provided in cooperation with the corresponding layout channels, and the plurality of matching screw holes are provided in cooperation with the connection mechanism 2.

[0023] It should be noted that the universal bearing assembly 1 is detachably connected to the corresponding connection point of the bridge through the connecting mechanism 1-2. At the same time, the connection position of the universal bearing assembly 1 and the connecting mechanism 1-2 can be adjusted according to the design requirements, so that the angle between the protective mechanism 3 connected to the universal bearing assembly 1 and the bridge road surface changes, thereby adapting to the protection requirements of different periods of the bridge construction process. At the same time, the universal bearing assembly 1 can provide effective protection for the power transmission line. During installation, the number and connection method of the protective mechanism 3 must be selected according to the protection height requirements, and then the length of the power generating mechanism 5 is adjusted according to the number of protective mechanisms 3, so that it can pass through multiple protective mechanisms 3 and be inserted into the universal bearing assembly 1. After the preparation of the power generating mechanism 5 is completed, it can be inserted from the corresponding layout channels of the multiple protective mechanisms 3 so that one end of it passes through the layout channel, and then the power transmission line on it is inserted into the through hole 103 on the universal bearing assembly 1, and it is hooked out of the prefabricated pipe 101 by the hook. After the multiple lines are arranged and connected, the protective mechanism 3 can be connected to the connecting mechanism 1-2 to form a stable overall protection assembly.

[0024] In an optional embodiment of the present invention, Figure 7 As shown, the connecting mechanism 2 includes an arc-shaped connecting portion 201, a platform connecting portion 202 integrally formed with the arc-shaped connecting portion 201, and a plurality of screw holes 203 provided on the arc-shaped connecting portion 201 and the platform connecting portion 202. The screw holes 203 are matched with the matching screw holes, and the protective mechanism 3 is detachably connected to the platform connecting portion 202.

[0025] It should be noted that when connecting the connecting mechanism 2 to the universal bearing assembly 1, the arc-shaped connecting portion 201 of the connecting mechanism 2 is placed at the corresponding position on the prefabricated pipe fitting 101, and the screw hole 203 on the arc-shaped connecting portion 201 is aligned with the matching screw hole on the prefabricated pipe fitting 101, and then the arc-shaped connecting portion 201 is stably connected to the prefabricated pipe fitting 101 through the connecting bolts, so that the arc-shaped connecting portion 201 and the platform connecting portion 202 can be stably connected to the universal bearing assembly 1. Since the arc-shaped connecting portion 201 is arc-shaped, it can be stably attached to the outer cylindrical surface of the prefabricated pipe fitting 101, so that the platform connecting portion 202 can provide stable support and limitation for the protective mechanism 3.

[0026] In an optional embodiment of the present invention, Figure 2 , Figure 7 , Figure 8 and Fig. 9As shown, the protective mechanism 3 includes a protective plate 301, a plurality of screw holes 3010 respectively arranged at the four corners of the protective plate 301, and a plurality of through holes 303 arranged inside the protective plate 301. The plurality of through holes 303 are respectively connected with the corresponding square through grooves 302 to form a laying channel. An annular slide groove is provided on the inner wall of the square through groove 302, and the annular slide groove is matched with the wind conversion mechanism 4.

[0027] The second connecting mechanism 6 includes an I-shaped connecting member 601 and a plurality of third screw holes 602 provided on the I-shaped connecting member 601 . The third screw holes 602 are matched with the second screw holes 3010 .

[0028] The connection mechanism three 7 includes a C-shaped connection member 701 and a plurality of screw holes four 702 arranged on the C-shaped connection member 701, and the screw holes four 702 are arranged in coordination with the screw holes two 3010.

[0029] It should be noted that when the protection mechanism 3 is connected to the connection mechanism 1 2, the protection plate 301 is placed on the platform connection part 202, and the screw hole 2 3010 on the protection plate 301 is aligned with the screw hole 1 203 on the platform connection part 202, and the two are stably connected by connecting bolts, and the adjacent protection plates 301 are connected by the connection mechanism 2 6 or the connection mechanism 3 7, and the adjacent protection plates 301 at the outermost sides are covered by the C-shaped connection piece 701 at the contact position of the two adjacent protection plates 301, so that the C-shaped connection piece 701 is connected to the platform connection part 202. The screw hole four 702 on the connecting member 701 corresponds to the screw hole two 3010 on the protective plate 301, and then a stable connection can be made through connecting bolts. If there are four protective plates 301 adjacent to each other, the I-shaped connecting member 601 is placed at the four adjacent corners of the four protective plates 301, and then the screw hole three 602 on the I-shaped connecting member 601 is aligned with the screw hole two 3010 on the corresponding protective plate 301, and then a stable connection is made through connecting bolts, so that all the protective plates 301 can be stably connected into a whole, thereby forming an overall protective assembly.

[0030] In an optional embodiment of the present invention, the protective plate 301 may be connected to a lighting device or a warning device via an I-shaped connector 601 or a C-shaped connector 701, and the warning device includes a warning sound player or a warning sign, which may broadcast or display the currently calculated wind force level; It should be noted that the current wind force level can be converted according to the power generation efficiency, which can provide the approximate wind force level on the bridge for passing vehicles and further improve the safety of vehicles passing on the bridge.

[0031] In an optional embodiment of the present invention, Figure 3 , Figure 4 and Figure 5As shown, the wind power conversion mechanism 4 includes a pneumatic conversion component and a magnetic field generating component arranged in the pneumatic conversion component, and the pneumatic conversion component is movably connected to the inner wall of the square through slot 302.

[0032] The pneumatic conversion assembly includes a rotating tube 401, two annular connectors 402 respectively connected to the two ends of the rotating tube 401, and a plurality of blades 403 fixedly connected to the outer circumferential surface of the rotating tube 401. The plurality of blades 403 are distributed at equal angles, and a gap is provided between the blades 403 and the square through groove 302. The annular connector 402 is matched with the annular slide groove.

[0033] The magnetic field generating assembly includes a permanent magnet 1 404 and a permanent magnet 2 405 fixedly connected to the inner circumferential surface of the rotating tube 401 . The permanent magnet 1 404 and the permanent magnet 2 405 are symmetrically distributed, and the polarities of the permanent magnet 1 404 and the permanent magnet 2 405 are opposite.

[0034] It should be noted that when wind is used as a power source and drives the fan blades 403 to rotate around the central axis of the rotating tube 401, the fan blades 403 can drive the rotating tube 401 to rotate in the same direction and at the same angle. During the rotation of the rotating tube 401, the permanent magnet 1 404 and the permanent magnet 2 405 connected on its inner circular surface can be driven to rotate in the same direction and at the same angle.

[0035] In an optional embodiment of the present invention, Figure 4 , Figure 5 and Figure 6 As shown, the power generating mechanism 5 includes a limit connecting plate 501 detachably connected to the protective plate 301, a connecting rod 502 fixedly connected to the limit connecting plate 501, an integrated circuit board 503 connected to the other end of the connecting rod 502, and a hard wire 504 electrically connected to the integrated circuit board 503, the hard wire 504 is arranged in a U shape, and the length of the hard wire 504 is greater than the height of the protective plate 301, the integrated circuit board 503 is located inside the prefabricated pipe 101, and several integrated circuit boards 503 are electrically connected to the external energy storage device, and a seal is provided at the perforation 103.

[0036] It should be noted that, since permanent magnet 1 404 and permanent magnet 2 405 rotate with the rotating tube 401, the hard wire 504 can continuously cut the magnetic field to generate electricity. During the entire power generation process, the hard wire 504 is fixed, and the heat energy generated by its power generation is continuously cooled down under the action of wind, so that the temperature of the entire hard wire 504 can be effectively controlled within a stable range. By real-time monitoring of current data, the wind force value range in the corresponding bridge area can be effectively known, and it can be effectively monitored whether there are foreign objects on the corresponding fan blades 403 that cause the rotation of the rotating tube 401 to be stuck, which can effectively provide data information to the staff, thereby effectively improving the maintenance and inspection efficiency and reducing costs.

[0037] The present embodiment is described above, but the present embodiment is not limited to the above-mentioned specific implementation manner. The above-mentioned specific implementation manner is merely illustrative and not restrictive. Under the guidance of the present embodiment, ordinary technicians in this field can also make many forms, which are all within the protection of the present embodiment.

Claims

1. A protective device for a bridge across an existing line, characterized in that: include: Universal bearing assembly (1); A plurality of connection mechanisms one (2), wherein the plurality of connection mechanisms one (2) are all detachably connected to the universal bearing assembly (1); A plurality of protection mechanisms (3), wherein a portion of the protection mechanisms (3) is connected to the universal bearing assembly (1) via a connection mechanism 1 (2), and a connection mechanism 2 (6) and a connection mechanism 3 (7) are connected between the other portion of the protection mechanisms (3) and the portion of the protection mechanisms (3), wherein the connection mechanism 2 (6) and the connection mechanism 3 (7) are used to connect the plurality of protection mechanisms (3) to form an integral protection assembly, wherein the protection mechanisms (3) are provided with a plurality of square through slots (302), and a wind power conversion mechanism (4) is provided inside the plurality of square through slots (302), and the wind power conversion mechanism (4) is used to convert wind energy into kinetic energy, and wherein the protection mechanisms (3) are provided with a plurality of laying channels, and the plurality of laying channels respectively penetrate the plurality of square through slots (302) arranged vertically; A plurality of power generating mechanisms (5), wherein the plurality of power generating mechanisms (5) are respectively detachably connected to corresponding protection mechanisms (3) and sequentially pass through corresponding one or more layout channels and extend into the universal bearing assembly (1), wherein the power generating mechanisms (5) are used to convert kinetic energy generated by the wind power conversion mechanism (4) into electrical energy and transmit the electrical energy to an external energy storage device.

2. A protective device for a bridge across an existing line according to claim 1, characterized in that: The universal bearing assembly (1) comprises a prefabricated pipe (101), a port plugging member (102) detachably connected to openings at both ends of the prefabricated pipe (101), a plurality of through holes (103) and a plurality of matching screw holes provided on the prefabricated pipe (101), wherein the plurality of through holes (103) are respectively provided in cooperation with corresponding layout channels, and the plurality of matching screw holes are provided in cooperation with a connection mechanism (2).

3. A protective device for a bridge across an existing line according to claim 2, characterized in that: The connecting mechanism (2) comprises an arc-shaped connecting portion (201), a platform connecting portion (202) integrally formed with the arc-shaped connecting portion (201), and a plurality of screw holes (203) provided on the arc-shaped connecting portion (201) and the platform connecting portion (202), wherein the screw holes (203) are arranged in coordination with the matching screw holes, and the protective mechanism (3) is detachably connected to the platform connecting portion (202).

4. A protective device for a bridge across an existing line according to claim 3, characterized in that: The protection mechanism (3) comprises a protection plate (301), a plurality of screw holes (3010) respectively arranged at the four corners of the protection plate (301), and a plurality of through holes (303) arranged inside the protection plate (301), the plurality of through holes (303) respectively being connected to corresponding square through grooves (302) to form a laying channel, an annular slide groove being arranged on the inner wall of the square through groove (302), and the annular slide groove being arranged in coordination with the wind power conversion mechanism (4).

5. A protective device for a bridge across an existing line according to claim 4, characterized in that: The wind power conversion mechanism (4) comprises a wind-driven conversion component and a magnetic field generating component arranged in the wind-driven conversion component, and the wind-driven conversion component is movably connected to the inner wall of the square through slot (302).

6. A protective device for a bridge across an existing line according to claim 5, characterized in that: The pneumatic conversion assembly comprises a rotating tube (401), two annular connectors (402) respectively connected to two ends of the rotating tube (401), and a plurality of blades (403) fixedly connected to the outer circumferential surface of the rotating tube (401), wherein the plurality of blades (403) are distributed at equal angles, and a gap is provided between the blades (403) and the square through groove (302), and the annular connector (402) is matched with the annular slide groove.

7. A protective device for a bridge across an existing line according to claim 6, characterized in that: The magnetic field generating assembly comprises a permanent magnet 1 (404) and a permanent magnet 2 (405) fixedly connected to the inner circumferential surface of the rotating tube (401); the permanent magnet 1 (404) and the permanent magnet 2 (405) are symmetrically distributed, and the polarities of the permanent magnet 1 (404) and the permanent magnet 2 (405) are opposite.

8. A protective device for a bridge across an existing line according to claim 7, characterized in that: The power generating mechanism (5) comprises a limit connecting plate (501) detachably connected to the protective plate (301), a connecting rod (502) fixedly connected to the limit connecting plate (501), an integrated circuit board (503) connected to the other end of the connecting rod (502), and a hard wire (504) electrically connected to the integrated circuit board (503), wherein the hard wire (504) is arranged in a U shape, and the length of the hard wire (504) is greater than the height of the protective plate (301), the integrated circuit board (503) is located inside the prefabricated pipe (101), and a plurality of the integrated circuit boards (503) are electrically connected to an external energy storage device, and a sealing member is provided at the first perforation (103).

9. A protective device for a bridge across an existing line according to claim 8, characterized in that: The second connecting mechanism (6) comprises an I-shaped connecting piece (601) and a plurality of third screw holes (602) provided on the I-shaped connecting piece (601), wherein the third screw holes (602) are arranged in coordination with the second screw holes (3010).

10. A protective device for a bridge across an existing line according to claim 9, characterized in that: The connection mechanism three (7) comprises a C-shaped connection piece (701) and a plurality of screw holes four (702) provided on the C-shaped connection piece (701), wherein the screw holes four (702) are arranged in coordination with the screw holes two (3010).

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