Elevator shaft node connecting structure and elevator shaft

Abstract

The utility model discloses an elevator hoistway node connecting structure and elevator hoistway, the elevator hoistway node connecting structure comprises a stand column and a cross beam, the stand column comprises a web plate, a first flange and a second flange, a connecting plate is arranged between the first flange and the second flange, the first flange, the connecting plate, the second flange and the web plate enclose to form a reinforcing cavity, and the cross beam is arranged in the reinforcing cavity. A reinforcing framework is arranged in the reinforcing cavity; the cross beam comprises a beam body, an installing plate is arranged at the end of the beam body, and the installing plate is detachably connected with the connecting plate, the first flange or the second flange. The cross beams and the stand columns are detachably connected, the reinforcing frameworks are arranged in the reinforcing cavities, the joint connecting strength between the stand columns and the cross beams is improved, on the premise that the stability and shock resistance requirements of an elevator shaft are met, steel use is greatly reduced, the stand columns and the cross beams are more convenient to transport and install, and the service life of the elevator shaft is prolonged. The installation difficulty and the installation cost of the elevator shaft are reduced, and the construction period of the elevator shaft is shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field of elevator equipment, and particularly relates to an elevator shaft node connection structure and an elevator shaft. Background Art

[0002] At present, due to the age of some old communities or factories, elevators were not designed at the beginning of the design, resulting in the problem of inconvenient people going up and down stairs and carrying goods. Since the installation shafts for elevators were not considered reserved during the design of old communities or factories in the past, adding elevators has gradually become a demand of people. By separately designing (adding) an elevator outside the building wall, the travel of the elderly can be satisfied and the handling of goods is also convenient.

[0003] The existing elevator shafts mainly include a frame structure composed of columns and crossbeams. According to the requirements of different heights of the elevator shaft, frame structures of different heights need to be built. At present, most of the columns and crossbeams of elevator shafts are made of rectangular tubes, and the columns and crossbeams are fixed by welding. Manual welding is slow in construction, occupies a large site, has a bad environmental impact, and has low construction efficiency, resulting in a long construction period. In addition, the elevator shaft belongs to a high-rise structure, and its strength can meet the requirements, but its stability and seismic performance are poor. Larger specifications of rectangular tubes are required to meet the requirements of stability and seismic resistance. Larger specifications of rectangular tubes are inconvenient for transportation, and increase the installation difficulty and cost of the elevator shaft. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an elevator shaft node connection structure and an elevator shaft to solve the above problems existing in the prior art.

[0005] To achieve the above purpose, on the one hand, the utility model adopts the following technical scheme: An elevator shaft node connection structure includes columns and crossbeams. The column includes a web, a first flange and a second flange. The two ends of the web are respectively connected to the first flange and the second flange. A connecting plate for connecting the crossbeam is arranged between the first flange and the second flange. The first flange, the connecting plate, the second flange and the web enclose a reinforcing cavity, and a reinforcing framework is arranged inside the reinforcing cavity; The crossbeam includes a beam body, and a mounting plate is arranged at the end of the beam body. The mounting plate is detachably connected to the connecting plate, the first flange or the second flange respectively.

[0006] As an optional implementation manner of the above technical scheme, the reinforcing framework includes a transverse reinforcing member and a longitudinal reinforcing member arranged crosswise. The two ends of the transverse reinforcing member are respectively welded and fixed to the first flange and the second flange. The two sides of the transverse reinforcing member are respectively welded and fixed to the web and the connecting plate. The two sides of the longitudinal reinforcing member are respectively welded and fixed to the web and the connecting plate.

[0007] As an alternative implementation of the above technical solution, the transverse reinforcing member includes an upper reinforcing plate and a lower reinforcing plate arranged at intervals. Both the upper reinforcing plate and the lower reinforcing plate are fixedly welded to the longitudinal reinforcing member. The two ends of the upper reinforcing plate are respectively fixedly welded to the first flange and the second flange, and the two sides of the upper reinforcing plate are respectively fixedly welded to the web and the connecting plate. The two ends of the lower reinforcing plate are respectively fixedly welded to the first flange and the second flange, and the two sides of the lower reinforcing plate are respectively fixedly welded to the web and the connecting plate.

[0008] As an alternative implementation of the above technical solution, the longitudinal reinforcing member includes a first longitudinal reinforcing plate. The two sides of the first longitudinal reinforcing plate are respectively fixedly welded to the web and the connecting plate. Both the upper reinforcing plate and the lower reinforcing plate are fixedly welded to the first longitudinal reinforcing plate, and a sealed cavity is formed by enclosing the upper reinforcing plate, the lower reinforcing plate, the first flange, the connecting plate, the second flange and the web, mainly to prevent the problems of inability to perform anti-corrosion treatment and inability to maintain due to later rusting.

[0009] As an alternative implementation of the above technical solution, an upper card slot is provided on one side of the upper reinforcing plate close to the web. The first longitudinal reinforcing plate is provided with a first card slot adapted to the upper card slot. A first stress notch is provided on one side of the first longitudinal reinforcing plate close to the connecting plate, and the first stress notch communicates with the first card slot.

[0010] As an alternative implementation of the above technical solution, a lower card slot is provided on one side of the lower reinforcing plate close to the web. The first longitudinal reinforcing plate is provided with a second card slot adapted to the lower card slot. A second stress notch is provided on one side of the first longitudinal reinforcing plate close to the connecting plate, and the second stress notch communicates with the second card slot.

[0011] As an alternative implementation of the above technical solution, a third stress notch and a fourth stress notch are provided on one side of the first longitudinal reinforcing plate close to the web. The third stress notch is located close to the upper reinforcing plate, and the fourth stress notch is located close to the lower reinforcing plate.

[0012] As an alternative implementation of the above technical solution, a first welding strip hole adapted to the first longitudinal reinforcing plate is formed on the connecting plate.

[0013] As an alternative implementation of the above technical solution, the sides of the first flange and the second flange are fixedly welded to the side of the connecting plate, and a welding distance is left between the edges of the first flange and the second flange and the connecting plate.

[0014] As an alternative implementation of the above technical solution, the beam body includes a rectangular tube, and one end of the rectangular tube is fixedly welded to the mounting plate.

[0015] As an alternative embodiment of the above technical solution, a second longitudinal reinforcing plate is provided on the mounting plate. A longitudinal mounting groove is formed at the end of the rectangular pipe, and the second longitudinal reinforcing plate passes through the rectangular pipe and is fixed in the longitudinal mounting groove by welding.

[0016] As an alternative embodiment of the above technical solution, a second welding strip hole adapted to the second longitudinal reinforcing plate is formed on the mounting plate.

[0017] As an alternative embodiment of the above technical solution, a fifth stress notch and a sixth stress notch are provided on one side of the second longitudinal reinforcing plate facing the mounting plate. The fifth stress notch is located near the top of the rectangular pipe, and the sixth stress notch is located near the bottom of the rectangular pipe.

[0018] As an alternative embodiment of the above technical solution, a connection hole is provided on the connecting plate, a first mounting hole is provided on the mounting plate, and second mounting holes are provided on both the first flange and the second flange. Bolts and nuts are provided between the connection hole and the first mounting hole, and between the connection hole and the second mounting hole.

[0019] On the other hand, the present utility model adopts the following technical solution: an elevator shaft, comprising the above elevator shaft node connection structure.

[0020] The beneficial effects of the present utility model are as follows:

[0021] In the present utility model, a detachable connection method is adopted between the cross beam and the column, and a reinforcing skeleton is arranged inside the reinforcing cavity to increase the node connection strength between the column and the cross beam. On the premise of meeting and improving the requirements of the stability and seismic resistance of the elevator shaft, the use of steel is greatly reduced, and the transportation and installation of the column and the cross beam are more convenient, reducing the installation difficulty and installation cost of the elevator shaft, shortening the production cycle, construction cycle of the elevator shaft, and the impact of construction on the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of an elevator shaft node connection structure in an embodiment of the present utility model;

[0023] Figure 2 is a three-dimensional structural diagram of a column in an embodiment of the present utility model;

[0024] Figure 3 is a schematic internal structure diagram of a column in an embodiment of the present utility model;

[0025] Figure 4 is a schematic structural diagram of a reinforcing skeleton in an embodiment of the present utility model;

[0026] Figure 5It is a schematic structural diagram of a crossbeam in an embodiment of the present utility model;

[0027] Figure 6 It is a schematic structural diagram of an elevator shaft in an embodiment of the present utility model.

[0028] In the figure: 1 - column; 2 - crossbeam; 11 - web; 12 - first flange; 13 - second flange; 14 - connecting plate; 15 - reinforcing framework; 141 - first welding strip hole; 151 - upper reinforcing plate; 152 - lower reinforcing plate; 153 - first longitudinal reinforcing plate; 1511 - upper card slot; 1521 - lower card slot; 1531 - first card slot; 1532 - first stress notch; 1533 - second card slot; 1534 - second stress notch; 1535 - third stress notch; 1536 - fourth stress notch; 21 - beam body; 22 - mounting plate; 23 - second longitudinal reinforcing plate; 211 - longitudinal mounting groove; 221 - second welding strip hole; 231 - fifth stress notch; 232 - sixth stress notch. Specific embodiments

[0029] As Figures 1 - 5 shown, this embodiment provides an elevator shaft node connection structure, including a column 1 and a crossbeam 2. The column 1 includes a web 11, a first flange 12 and a second flange 13. The two ends of the web 11 are respectively connected to the first flange 12 and the second flange 13. The web 11, the first flange 12 and the second flange 13 are connected in an I - shape. A connecting plate 14 for connecting the crossbeam 2 is provided between the first flange 12 and the second flange 13. The connecting plate 14 is fixed to the first flange 12 and the second flange 13 by welding respectively. The sides of the first flange 12 and the second flange 13 are fixed to the side of the connecting plate 14 by welding, and there is a welding distance between the edges of the first flange 12 and the second flange 13 and the connecting plate 14, which is beneficial to the welding work of the connecting plate 14.

[0030] A reinforcing cavity is formed by enclosing the first flange 12, the connecting plate 14, the second flange 13 and the web 11. A reinforcing framework 15 is arranged inside the reinforcing cavity. The reinforcing framework 15 can increase the node connection strength between the column 1 and the crossbeam 2. On the premise of meeting the requirements of the stability and seismic resistance of the elevator shaft, the use of steel is reduced, and the installation difficulty of the elevator shaft is lowered.

[0031] As Figure 5As shown, the cross beam 2 includes a beam body 21, and mounting plates 22 are provided at the ends of the beam body 21. The mounting plates 22 are detachably connected to the connecting plate 14, the first flange 12 or the second flange 13 respectively. Usually, one cross beam 2 needs to be connected to a column 1 on the X-axis and the Y-axis respectively. One cross beam 2 is connected to the mounting plate 22, and the other cross beam 2 is connected to the first flange 12 or the second flange 13. Since the cross beam 2 and the column 1 adopt a detachable connection method, it can effectively improve the on-site installation efficiency of the elevator shaft, save construction time and labor costs.

[0032] In the present utility model, a detachable connection method is adopted between the cross beam 2 and the column 1, and a reinforcing framework 15 is arranged inside the strengthening cavity to increase the joint connection strength between the column 1 and the cross beam 2. On the premise of meeting and improving the requirements for the stability and seismic resistance of the elevator shaft, the use of steel is greatly reduced, and the transportation and installation of the column 1 and the cross beam 2 are more convenient, reducing the installation difficulty and installation cost of the elevator shaft, shortening the production cycle, construction cycle of the elevator shaft and the impact of construction on the environment.

[0033] As Figure 1 and Figure 2 shown, in a specific embodiment, four connection holes are provided on the connecting plate 14, four first mounting holes are provided on the mounting plate 22, and four second mounting holes are provided on the first flange 12 or the second flange 13. Bolts and nuts are provided between the connection holes and the first mounting holes, and between the connection holes and the second mounting holes. The connection holes correspond to the first mounting holes one by one, and the connection holes correspond to the second mounting holes one by one, realizing the connection between the column 1 and the two cross beams 2.

[0034] In a specific embodiment, the reinforcing framework 15 includes a transverse reinforcing member and a longitudinal reinforcing member arranged crosswise. The two ends of the transverse reinforcing member are respectively welded and fixed to the first flange 12 and the second flange 13, and the two sides of the transverse reinforcing member are respectively welded and fixed to the web 11 and the connecting plate 14. The two sides of the longitudinal reinforcing member are respectively welded and fixed to the web 11 and the connecting plate 14. The periphery of the transverse reinforcing member is respectively welded and fixed to the first flange 12, the connecting plate 14, the second flange 13 and the web 11. The transverse reinforcing member and the longitudinal reinforcing member are welded and fixed to each other, and the longitudinal reinforcing member is respectively welded and fixed to the web 11 and the connecting plate 14 to ensure the joint connection strength between the column 1 and the cross beam 2.

[0035] As Figure 3 and Figure 4As shown, specifically, the transverse reinforcing member includes an upper reinforcing plate 151 and a lower reinforcing plate 152 which are arranged at intervals. Both the upper reinforcing plate 151 and the lower reinforcing plate 152 are fixedly welded to the longitudinal reinforcing member. The two ends of the upper reinforcing plate 151 are respectively fixedly welded to the first flange 12 and the second flange 13, and the two sides of the upper reinforcing plate 151 are respectively fixedly welded to the web 11 and the connecting plate 14. The two ends of the lower reinforcing plate 152 are respectively fixedly welded to the first flange 12 and the second flange 13, and the two sides of the lower reinforcing plate 152 are respectively fixedly welded to the web 11 and the connecting plate 14. Both the upper reinforcing plate 151 and the lower reinforcing plate 152 are rectangular. The upper reinforcing plate 151 is located above the lower reinforcing plate 152. The peripheral sides of the upper reinforcing plate 151 are respectively fixedly welded to the first flange 12, the connecting plate 14, the second flange 13 and the web 11. The peripheral sides of the lower reinforcing plate 152 are respectively fixedly welded to the first flange 12, the connecting plate 14, the second flange 13 and the web 11. The longitudinal reinforcing member penetrates through the upper reinforcing plate 151 and the lower reinforcing plate 152, improving the overall strength of the reinforcing framework 15 and increasing the torsional and shear resistance performance of the column 1.

[0036] Preferably, the longitudinal reinforcing member includes a first longitudinal reinforcing plate 153. The two sides of the first longitudinal reinforcing plate 153 are respectively fixedly welded to the web 11 and the connecting plate 14. Both the upper reinforcing plate 151 and the lower reinforcing plate 152 are fixedly welded to the first longitudinal reinforcing plate 153. Moreover, the upper reinforcing plate 151, the lower reinforcing plate 152, the first flange 12, the connecting plate 14, the second flange 13 and the web 11 enclose a sealed cavity to prevent the inner sides of the upper reinforcing plate 151 and the lower reinforcing plate 152 from rusting and affecting the service life of the elevator shaft.

[0037] As Figure 4As shown, in a specific embodiment, an upper card slot 1511 is provided on the side of the upper reinforcement plate 151 close to the web 11. The first longitudinal reinforcement plate 153 is provided with a first card slot 1531 adapted to the upper card slot 1511. A first stress notch 1532 is provided on the side of the first longitudinal reinforcement plate 153 close to the connecting plate 14, and the first stress notch 1532 communicates with the first card slot 1531. A lower card slot 1521 is provided on the side of the lower reinforcement plate 152 close to the web 11. The first longitudinal reinforcement plate 153 is provided with a second card slot 1533 adapted to the lower card slot 1521. A second stress notch 1534 is provided on the side of the first longitudinal reinforcement plate 153 close to the connecting plate 14, and the second stress notch 1534 communicates with the second card slot 1533. The upper card slot 1511 and the first card slot 1531 cooperate with each other, and the lower card slot 1521 and the second card slot 1533 cooperate with each other, which is beneficial to the positioning and installation of the upper reinforcement plate 151, the lower reinforcement plate 152 and the first longitudinal reinforcement plate 153. The design of the first stress notch 1532 and the second stress notch 1534 can reduce the welding stress of the first longitudinal reinforcement plate 153. Preferably, a third stress notch 1535 and a fourth stress notch 1536 are provided on the side of the first longitudinal reinforcement plate 153 close to the web 11. The third stress notch 1535 is located close to the upper reinforcement plate 151, and the fourth stress notch 1536 is located close to the lower reinforcement plate 152, which can further reduce the welding stress of the first longitudinal reinforcement plate 153.

[0038] A first welding strip hole 141 adapted to the first longitudinal reinforcement plate 153 is formed on the connecting plate 14. Metal material is filled into the first welding strip hole 141 to form a weld seam. It adopts the method of caulking welding to increase the connection strength between the connecting plate 14 and the first longitudinal reinforcement plate 153 and reduce the welding difficulty between the connecting plate 14 and the first longitudinal reinforcement plate 153.

[0039] In a specific embodiment, the beam body 21 includes a rectangular pipe. One end of the rectangular pipe is welded and fixed to the mounting plate 22, and the mounting plate 22 seals the rectangular pipe to prevent internal corrosion and rust of the rectangular pipe. Preferably, a second longitudinal reinforcement plate 23 is provided on the mounting plate 22. A longitudinal mounting groove 211 is formed at the end of the rectangular pipe. The second longitudinal reinforcement plate 23 passes through the rectangular pipe and is welded and fixed in the longitudinal mounting groove 211. The second longitudinal reinforcement plate 23, as a reinforcing rib, can not only increase the overall strength of the rectangular pipe, but also increase the connection strength between the rectangular pipe and the mounting plate 22.

[0040] Furthermore, the second longitudinal reinforcing plate 23 is provided with a fifth stress notch 231 and a sixth stress notch 232 on one side facing the mounting plate 22. The fifth stress notch 231 is located near the top of the rectangular tube, and the sixth stress notch 232 is located near the bottom of the rectangular tube. The second longitudinal reinforcing plate 23 has the fifth stress notch 231 and the sixth stress notch 232, which can reduce the welding stress of the second longitudinal reinforcing plate 23. The mounting plate 22 is provided with a second welding strip hole 221 adapted to the second longitudinal reinforcing plate 23, and a metal material is filled into the second welding strip hole 221 to form a weld, which adopts a caulking welding method to increase the connection strength between the mounting plate 22 and the second longitudinal reinforcing plate 23.

[0041] like Figure 6 As shown, this embodiment also provides an elevator shaft, including the above-mentioned elevator shaft node connection structure, the elevator shaft has four columns 1, and two adjacent columns 1 are connected by a crossbeam 2. The columns 1 and the crossbeam 2 are welded in advance in the factory, and then transported to the site for assembly by bolts and nuts. The elevator shaft has a simple structure, is easy to process, construct, transport and assemble, has a low production cost, and the elevator shaft has strong torsion and shear deformation resistance, and is suitable for promotion and application.

[0042] In the description of the present utility model, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, and may be fixedly connected, detachably connected, or integrated; may be mechanically connected or electrically connected; may be directly connected or indirectly connected through an intermediate medium, may be the internal connection of two components or the interaction relationship between two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood. In addition, the specific features, structures, etc. described in the embodiments are included in at least one embodiment. In the absence of mutual contradictions, those skilled in the art may combine the features of different embodiments. The scope of protection of the present utility model is not limited to the above-mentioned specific embodiments. According to the basic technical concept of the present utility model, the embodiments that can be associated with by ordinary technicians in this field without creative work all belong to the scope of protection of the present utility model.

Claims

1. An elevator shaft node connection structure, comprising a column (1) and a beam (2), characterized in that: The column (1) comprises a web (11), a first flange (12) and a second flange (13); the two ends of the web (11) are respectively connected to the first flange (12) and the second flange (13); a connecting plate (14) for connecting the cross beam (2) is provided between the first flange (12) and the second flange (13); the first flange (12), the connecting plate (14), the second flange (13) and the web (11) form a reinforcement cavity; a reinforcement frame (15) is provided inside the reinforcement cavity; the cross beam (2) comprises a beam body (21); an installation plate (22) is provided at the end of the beam body (21); the installation plate (22) is detachably connected to the connecting plate (14), the first flange (12) or the second flange (13).

2. The elevator shaft node connection structure according to claim 1, characterized in that: The reinforcement frame (15) includes cross-arranged transverse reinforcement members and longitudinal reinforcement members, the two ends of the transverse reinforcement members are respectively welded to the first flange (12) and the second flange (13), the two sides of the transverse reinforcement members are respectively welded to the web (11) and the connecting plate (14), and the two sides of the longitudinal reinforcement members are respectively welded to the web (11) and the connecting plate (14).

3. The elevator shaft node connection structure according to claim 2, characterized in that: The transverse reinforcement member comprises an upper reinforcement plate (151) and a lower reinforcement plate (152) which are arranged at intervals. The upper reinforcement plate (151) and the lower reinforcement plate (152) are both welded and fixed to the longitudinal reinforcement member. The two ends of the upper reinforcement plate (151) are respectively welded and fixed to the first flange (12) and the second flange (13), and the two sides of the upper reinforcement plate (151) are respectively welded and fixed to the web (11) and the connecting plate (14); the two ends of the lower reinforcement plate (152) are respectively welded and fixed to the first flange (12) and the second flange (13), and the two sides of the lower reinforcement plate (152) are respectively welded and fixed to the web (11) and the connecting plate (14).

4. The elevator shaft node connection structure according to claim 3, characterized in that: The longitudinal reinforcement member comprises a first longitudinal reinforcement plate (153), the two sides of which are respectively welded to the web (11) and the connecting plate (14), the upper reinforcement plate (151) and the lower reinforcement plate (152) are both welded to the first longitudinal reinforcement plate (153), and the upper reinforcement plate (151), the lower reinforcement plate (152), the first flange (12), the connecting plate (14), the second flange (13) and the web (11) enclose a sealed cavity.

5. The elevator shaft node connection structure according to claim 4, characterized in that: An upper clamping groove (1511) is provided on a side of the upper reinforcing plate (151) close to the web (11); a first clamping groove (1531) adapted to the upper clamping groove (1511) is provided on the first longitudinal reinforcing plate (153); a first stress notch (1532) is provided on a side of the first longitudinal reinforcing plate (153) close to the connecting plate (14); and the first stress notch (1532) is connected to the first clamping groove (1531); The lower reinforcing plate (152) is provided with a lower groove (1521) on a side close to the web (11), the first longitudinal reinforcing plate (153) is provided with a second groove (1533) adapted to the lower groove (1521), and the first longitudinal reinforcing plate (153) is provided with a second stress notch (1534) on a side close to the connecting plate (14), and the second stress notch (1534) is connected to the second groove (1533).

6. The elevator shaft node connection structure according to claim 5, characterized in that: A third stress notch (1535) and a fourth stress notch (1536) are provided on a side of the first longitudinal reinforcing plate (153) close to the web (11), the third stress notch (1535) being located close to the upper reinforcing plate (151), and the fourth stress notch (1536) being located close to the lower reinforcing plate (152); and a first welding strip hole (141) adapted to the first longitudinal reinforcing plate (153) is provided on the connecting plate (14).

7. The elevator shaft node connection structure according to claim 1, characterized in that: The side surfaces of the first flange (12) and the second flange (13) are fixed to the side surfaces of the connecting plate (14) by welding, and a welding distance is left between the edges of the first flange (12) and the second flange (13) and the connecting plate (14).

8. The elevator shaft node connection structure according to claim 1, characterized in that: The beam body (21) comprises a rectangular tube, one end of which is welded and fixed to a mounting plate (22); a second longitudinal reinforcing plate (23) is provided on the mounting plate (22); a longitudinal mounting groove (211) is provided at the end of the rectangular tube; the second longitudinal reinforcing plate (23) penetrates the rectangular tube and is fixed in the longitudinal mounting groove (211) by welding; a second welding strip hole (221) adapted to the second longitudinal reinforcing plate (23) is provided on the mounting plate (22); a fifth stress notch (231) and a sixth stress notch (232) are provided on a side of the second longitudinal reinforcing plate (23) facing the mounting plate (22); the fifth stress notch (231) is located near the top of the rectangular tube, and the sixth stress notch (232) is located near the bottom of the rectangular tube.

9. The elevator shaft node connection structure according to claim 1, characterized in that: The connecting plate (14) is provided with a connecting hole, the mounting plate (22) is provided with a first mounting hole, the first flange (12) or the second flange (13) is provided with a second mounting hole, and bolts and nuts are provided between the connecting hole and the first mounting hole and between the connecting hole and the second mounting hole.

10. An elevator shaft, characterized in that: It comprises the elevator shaft node connection structure as described in any one of claims 1 to 9.

Images