Traction machine

Abstract

The utility model discloses a traction machine, which belongs to the technical field of elevators, and comprises a machine base, a bearing, a limiting plate and a traction wheel shaft, the bearing is sleeved outside the traction wheel shaft and is arranged in the machine base, and the traction wheel shaft is in running fit with the machine base through the bearing; the first end of the bearing abuts against one side of the machine base, and the limiting plate is installed in the machine base and abuts against the second end of the bearing. The machine base is provided with a connecting hole and a fastener, and the first end of the fastener penetrates through the connecting hole and is in threaded connection with the limiting plate. The second end of the fastener abuts against the other side of the machine base. By forming the connecting hole in the machine base, when the limiting plate is fixed, the fastening piece is driven in from the other side away from the rotor mechanism, the fastening piece can be driven in from the direction opposite to the direction where the limiting plate is installed, the installation position is flexible, the space in the direction opposite to the limiting plate is large, and operation is convenient; the installation position of the traction machine is far away from the magnetic steel and is not easily interfered by the magnetic steel, and the problem that an existing traction machine is low in installation efficiency is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of elevators, in particular to a traction machine. Background Art

[0002] An elevator is a permanent transportation device that serves several specific floors in a building and whose car runs on at least two rows of rigid tracks that are perpendicular to the horizontal plane or have an inclination angle of less than 15° to the plumb line.

[0003] The elevator consists of a machine room, a traction system, and a guide system. The traction machine of the traction system is the core driving component of the elevator and is called the "heart" of the elevator. The traction machine has a rotor module and a stator core. The rotor module is used to cooperate with the stator core. When the stator core is conductive, the rotor module rotates around the stator core to provide traction for the elevator car.

[0004] The traction machine includes a traction wheel shaft, a machine base and a bearing. The existing installation method generally connects the traction wheel shaft to the machine base through the bearing; however, the installation position of the screw fixing limit plate is close to the magnet, and the screw is easily interfered or affected by the magnet, which reduces the assembly efficiency of the traction machine. Utility Model Content

[0005] The utility model aims to improve the problem of low efficiency of the existing traction machine during installation and provide a traction machine.

[0006] The technical solutions to achieve the above objectives include the following:

[0007] A traction machine comprises a machine base, a bearing, a limit plate and a traction wheel shaft, wherein the bearing is sleeved outside the traction wheel shaft and installed in the machine base, and the traction wheel shaft is rotatably matched with the machine base through the bearing; a first end of the bearing abuts against one side of the machine base, the limit plate is installed in the machine base, and the limit plate abuts against the second end of the bearing;

[0008] The machine base has a connecting hole and a fastener, wherein a first end of the fastener passes through the connecting hole and is threadedly connected to the limiting plate; and a second end of the fastener abuts against the other side of the machine base.

[0009] In one embodiment, the machine base has a first mounting groove and a second mounting groove, the first mounting groove is communicated with the second mounting groove, and the first mounting groove and the second mounting groove are both extended along the circumference of the machine base; the bearing is installed in the second mounting groove, and the limit plate is installed in the first mounting groove, and the outer diameter of the first mounting groove is larger than the outer diameter of the second mounting groove.

[0010] In one embodiment, the base includes a first support frame, a second support frame and four connecting columns, the first ends of the four connecting columns are installed on the four corners of the first support frame, and the second ends of the four connecting columns are installed on the four corners of the second support frame;

[0011] The first support frame, four connecting columns and the second support frame are an integrated structure, and the bearing is installed in the first support frame or the second support frame; a hoisting hole is opened on the connecting column, and the hoisting hole is arranged close to the first support frame or the second support frame.

[0012] In one embodiment, the traction machine further includes a brake and a junction box, which are respectively installed at both ends of the machine base. Both ends of the machine base have positioning holes and positioning pins, and the positioning holes are for the positioning pins to pass through. The brake or the junction box cooperates with the machine base through the positioning pins.

[0013] In one embodiment, the junction box includes an outer shell, a first partition and a second partition, a accommodating cavity is formed in the outer shell, the first partition and the second partition are both installed in the outer shell, and the accommodating cavity of the outer shell is divided into a first wire trough, a second wire trough and a third wire trough; the outer shell has a wiring hole that passes through the inner side from the outer side of the outer shell.

[0014] In one embodiment, the traction machine further includes a protection component, which is installed on the machine base. The cross-section of the protection component is U-shaped. At least part of the traction wheel shaft is located in the protection component. The protection component has an opening for the traction rope of the traction wheel shaft to pass through.

[0015] In one embodiment, the protection assembly includes a first protection member and a second protection member, the first protection member and the second protection member are both installed on the machine base, and the first protection member and the second protection member are arranged opposite to each other; the opening is formed between the first protection member and the second protection member, and the traction wheel shaft is located between the first protection member and the second protection member.

[0016] In one of the embodiments, the first protective member includes a first baffle, a first connecting plate, a second baffle, a second connecting plate and a third baffle, the first baffle is connected to the first end of the first connecting plate, the second end of the connecting plate is bent, the second end of the connecting plate is connected to the first end of the second baffle, and the second baffle is connected to the third baffle through the second connecting plate; the first baffle is vertically arranged to the first connecting plate, and the first connecting plate, the second baffle and the third baffle are parallelly arranged; the protective surface of the third baffle is higher than the protective surface of the second baffle.

[0017] In one embodiment, the second protection member includes a fourth baffle, a third connecting plate and a fifth baffle, the fourth baffle is connected to a first end of the third connecting plate, the second end of the third connecting plate is bent, the second end of the third connecting plate is connected to the fifth baffle, the third connecting plate is parallel to the fifth baffle, and the third connecting plate is perpendicular to the fourth baffle;

[0018] At least a portion of the third baffle overlaps with at least a portion of the fifth baffle.

[0019] In one embodiment, the traction machine further comprises a rotor mechanism and a stator mechanism, wherein the stator mechanism is mounted on a machine base, and the rotor mechanism is mounted on a traction wheel shaft. The rotor mechanism is arranged close to the stator mechanism, and the rotor mechanism and the stator mechanism are rotationally matched.

[0020] The technical solution provided by the utility model has the following advantages and effects:

[0021] By opening a connection hole on the machine base, the fastener is driven into the other side away from the rotor mechanism when fixing the limit plate, and the first end of the fastener is threadedly connected to the limit plate after passing through the connection hole, and the second end of the fastener abuts against the outer side of the machine base, so that the limit plate fixes the bearing and limits the position of the bearing. In this way of installing the limit plate, the fastener can be driven into the opposite direction of the installation of the limit plate, and its installation position is more flexible, and the space in the opposite direction of the limit plate is larger, which is convenient for operation; its installation position in the opposite direction is far away from the magnetic steel, and is not easily interfered by the magnetic steel of the rotor mechanism, which improves the problem of low efficiency of the existing traction machine during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings herein show specific examples of the technical solutions described in the present utility model, and together with the specific implementation methods constitute a part of the specification, and are used to explain the technical solutions, principles and effects of the present utility model.

[0023] Unless otherwise specified or defined, the same reference numerals in different drawings represent the same or similar technical features, and the same or similar technical features may also be represented by different reference numerals.

[0024] Figure 1 It is a structural schematic diagram of a traction machine in one embodiment of the utility model;

[0025] Figure 2 This is a cross-sectional view of a traction machine in one embodiment of the utility model. Figure 1 ;

[0026] Figure 3 This is a cross-sectional view of a traction machine in one embodiment of the utility model. Figure 2 ;

[0027] Figure 4 It is a structural schematic diagram of a machine base in one embodiment of the utility model;

[0028] Figure 5 In one embodiment of the utility model Figure 2 A local enlarged view of point A;

[0029] Figure 6 This is a schematic diagram of the structure of a junction box in one embodiment of the utility model;

[0030] Figure 7 This is a schematic structural diagram of a first protective member in an embodiment of the utility model;

[0031] Figure 8 This is a schematic structural diagram of a second protective member in an embodiment of the utility model;

[0032] Description of reference numerals:

[0033] 100, traction machine; 1, machine base; 11, connecting column; 111, lifting hole; 12, first support frame; 121, abutment portion; 13, second support frame; 14, connecting hole; 15, positioning hole; 16, limit plate; 17, fastener; 18, bearing; 19, first mounting groove; 20, second mounting groove; 2, traction wheel shaft; 3, junction box; 31, housing; 32, first partition; 33, second partition; 34, accommodating chamber; 341, first Wire slot; 342, second wire slot; 343, third wire slot; 35, wiring hole; 4, protective assembly; 41, first protective member; 411, first baffle; 412, first connecting plate; 413, second baffle; 414, second connecting plate; 415, third baffle; 42, second protective member; 421, fourth baffle; 422, third connecting plate; 423, fifth baffle; 43, opening; 5, stator mechanism; 6, rotor mechanism; 7, brake. DETAILED DESCRIPTION

[0034] In order to facilitate the understanding of the present invention, specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0035] Unless otherwise specified or defined, the "first, second..." used in this article is merely used to distinguish names and does not represent a specific quantity or order.

[0036] Unless specifically stated or defined otherwise, the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] It should be noted that when a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there can be a central component; when an component is considered to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time; when an component is considered to be "installed on" another component, it can be directly installed on the other component or there can be a central component at the same time. When an component is considered to be "set on" another component, it can be directly set on the other component or there can be a central component at the same time.

[0038] like Figures 1 to 5 As shown, a traction machine 100 includes a machine base 1, a bearing 18, a limit plate 16 and a traction wheel shaft 2, wherein the bearing 18 is sleeved on the outside of the traction wheel shaft 2 and installed in the machine base 1, and the traction wheel shaft 2 is rotatably matched with the machine base 1 through the bearing 18; the first end of the bearing 18 abuts against the abutment portion 121 on one side of the machine base 1, the limit plate 16 is installed in the machine base 1, and the limit plate 16 abuts against the second end of the bearing 18; the machine base 1 has a connecting hole 14 and a fastener 17, the first end of the fastener 17 passes through the connecting hole 14 and is threadedly connected to the limit plate 16; the second end of the fastener 17 abuts against the other side of the machine base 1.

[0039] In this embodiment, if Figure 2 As shown, the rotor mechanism 6 has a magnetic steel, and there is a magnetic field in the rotor mechanism 6. The rotor mechanism 6 is located on one side of the base 1. If the limit plate 16 is fixed on the side close to the magnetic field, since the fastener 17 is light in weight, when the fastener 17 is installed along the circumference of the limit plate 16, the fastener 17 is easily disturbed by the magnetic field, or directly adsorbed by the magnetic steel, resulting in low installation efficiency. Therefore, by opening a connecting hole 14 on the base 1, when the fastener 17 fixes the limit plate 16, the fastener 17 is driven into the other side away from the rotor mechanism 6. After passing through the connecting hole 14, the first end of the fastener 17 is threadedly connected to the limit plate 16, and the second end of the fastener 17 is against the outer side of the base 1, so that the limit plate 16 fixes the bearing 18 and limits the position of the bearing 18. By installing the limit plate 16 in this way, the fastener 17 can be driven in from the opposite direction of the installation of the limit plate 16. The installation position is more flexible, and the space in the opposite direction of the limit plate 16 is larger, which is convenient for operation. The installation position in the opposite direction is far away from the magnets of the rotor mechanism 6 and is not easily interfered by the magnets, thereby improving the problem of low efficiency of the existing traction machine 100 during installation.

[0040] like Figure 4 and Figure 5As shown, the base 1 has a first mounting groove 19 and a second mounting groove 20, the first mounting groove 19 is connected to the second mounting groove 20, and the first mounting groove 19 and the second mounting groove 20 are both extended along the circumference of the base 1; the bearing 18 is installed in the second mounting groove 20, and the limit plate 16 is installed in the first mounting groove 19, and the outer diameter of the first mounting groove 19 is greater than the outer diameter of the second mounting groove 20. By arranging the first mounting groove 19 and the second mounting groove 20 on the base 1, the second mounting groove 20 is used to install the bearing 18, and the first mounting groove 19 is used to install the limit plate 16. After the limit plate 16 and the bearing 18 are installed, they are compactly arranged in the base 1, thereby improving the stability of the rotational cooperation between the traction wheel shaft 2 and the base 1. Since the outer diameter of the first mounting groove 19 is greater than the outer diameter of the second mounting groove 20, the conditions for opening the connecting hole 14 are met between the first mounting groove 19 and the second mounting groove 20, so that the fastener 17 is installed from the side away from the rotor mechanism 6.

[0041] like Figure 1 and Figure 4 As shown, the base 1 includes a first support frame 12, a second support frame 13 and four connecting columns 11, the first ends of the four connecting columns 11 are installed on the four corners of the first support frame 12, and the second ends of the four connecting columns 11 are installed on the four corners of the second support frame 13; in this way, the six sides of the base 1 have through openings, the front and rear through openings are used for the traction wheel shaft 2 to pass through, so that the rotor mechanism 6 of the traction wheel shaft 2 cooperates with the stator mechanism 5 of the base 1, and the upper, lower, left and right through openings can facilitate the insertion of fasteners 17 and the installation of traction ropes on the traction wheel shaft 2.

[0042] In addition, the first support frame 12, the four connecting columns 11 and the second support frame 13 are an integrated structure, which improves the integrity of the structure of the machine base 1 and improves the structural strength. The bearing 18 is installed in the first support frame 12 or the second support frame 13; the connecting column 11 is provided with a hoisting hole 111, and the hoisting hole 111 is arranged close to the first support frame 12 or the second support frame 13. The hoisting hole 111 is used for the hoisting rope to pass through, and then the hoisting machine 100 is hoisted and installed by a crane. Moreover, the hoisting hole 111 is close to the first support frame 12 or the second support frame 13, so that when the hoisting machine 100 is hoisted, the center of gravity of the hoisting machine 100 is tilted to one side, so that the hoisting machine 100 is tilted as a whole, reducing the lateral volume of the hoisting machine 100 after hoisting, and making the hoisting machine 100 more flexible during installation.

[0043] like Figure 1 and Figure 2As shown, the traction machine 100 further includes a brake 7 and a junction box 3, which are respectively installed at both ends of the base 1. Both ends of the base 1 have positioning holes 15 and positioning pins, and the positioning holes 15 are for the positioning pins to pass through. The brake 7 or the junction box 3 cooperates with the base 1 through the positioning pins. The brake 7 is used to brake the traction wheel shaft 2, and the junction box 3 is used to accommodate multiple wires, so that the multiple wires are concentrated in the junction box 3 to avoid the wires from being exposed and the external environment from damaging the wires; the positioning hole 15 is opened on the base 1, and after a part of the positioning pin is removed into the positioning hole 15, the junction box 3 and the brake 7 have pin holes fixed with the positioning pins, and the positioning pins are used to improve the installation accuracy of the junction box 3 and the brake 7.

[0044] like Figure 1 and Figure 6 As shown, the terminal box 3 includes a shell 31, a first partition 32 and a second partition 33. A receiving cavity 34 is formed in the shell 31. The first partition 32 and the second partition 33 are both installed in the shell 31, and the receiving cavity 34 of the shell 31 is divided into a first wire groove 341, a second wire groove 342 and a third wire groove 343. The shell 31 has a wiring hole 35 passing from the outer side of the shell 31 through the inner side. The receiving cavity 34 of the shell 31 is divided into three wire grooves by the first partition 32 and the second partition 33. The first wire groove 341 is used to receive the first wire, and the first wire is used to connect the stator mechanism 5 or the rotor mechanism 6. After conduction, the stator mechanism 5 cooperates with the rotor mechanism 6 to drive the traction wheel shaft 2 to rotate. The second wire groove 342 is used to receive the second wire, and the second guide is used to connect the encoder on the rotor mechanism 6. The encoder is used to monitor the rotation state of the rotor mechanism 6. The third wire groove 343 is used to receive the third wire, and the third wire is used to connect the brake 7 so that the traction wheel shaft 2 is braked when the brake 7 is in operation. The accommodating cavity 34 is separated to prevent the first wire, the second wire, and the third wire from being entangled and knotted during installation.

[0045] like Figure 1 and Figure 3 As shown, the traction machine 100 further comprises a protection component 4, which is mounted on the machine base 1. The cross section of the protection component 4 is U-shaped. At least part of the traction sheave shaft 2 is located in the protection component 4. The protection component 4 has an opening 43, and the opening 43 is for the traction rope of the traction sheave shaft 2 to pass through. When the traction rope breaks, the traction rope will generate a large impact force. The protection component 4 can effectively block the broken traction rope, prevent the traction rope from damaging other parts of the traction machine 100 after breaking, and improve the safety of the traction machine 100.

[0046] like Figure 3As shown, the protection assembly 4 includes a first protection member 41 and a second protection member 42, both of which are mounted on the machine base 1, and the first protection member 41 and the second protection member 42 are arranged opposite to each other; the opening 43 is formed between the first protection member 41 and the second protection member 42, and the traction wheel shaft 2 is located between the first protection member 41 and the second protection member 42. The first protection member 41 is used to protect one side and the top of the traction wheel shaft 2, and the second protection member 42 is used to protect the other side and the top of the traction wheel shaft 2, and the opening 43 is used for the traction rope to pass through and connect to the car.

[0047] like Figure 3 and Figure 7 As shown, the first protective member 41 includes a first baffle 411, a first connecting plate 412, a second baffle 413, a second connecting plate 414 and a third baffle 415. The first baffle 411 is connected to the first end of the first connecting plate 412, the second end of the connecting plate 412 is bent, the second end of the connecting plate 412 is connected to the first end of the second baffle 413, and the second baffle 413 is connected to the third baffle 415 through the second connecting plate 414; the first baffle 411 is vertically arranged with the first connecting plate 412, the first connecting plate 412, the second baffle 413 and the third baffle 415 are arranged in parallel; the protective surface of the third baffle 415 is higher than the protective surface of the second baffle 413. The first protective member 41 and the second protective member 42 are both formed by simply bending metal plates, the first baffle 411 is used to protect the first side surface of the traction wheel shaft 2, and the second baffle 413 and the third baffle 415 are used to protect the top of the traction wheel shaft 2.

[0048] like Figure 3 , Figure 7 and Figure 8 As shown, the second protection member 42 includes a fourth baffle 421, a third connecting plate 422 and a fifth baffle 423, the fourth baffle 421 is connected to the first end of the third connecting plate 422, the second end of the third connecting plate 422 is bent, the second end of the third connecting plate 422 is connected to the fifth baffle 423, the third connecting plate 422 and the fifth baffle 423 are arranged in parallel, and the third connecting plate 422 and the fourth baffle 421 are arranged vertically; the fourth baffle 421 is used to protect the second side surface of the traction wheel shaft 2, and the fifth baffle 423 is used to protect the top of the traction wheel shaft 2. At least part of the third baffle 415 overlaps at least part of the fifth baffle 423. Since the traction rope generally pulls the car vertically, after the traction rope breaks, the reverse impact force generated by the traction rope is also vertical. After the traction rope breaks, it is directly ejected to the top of the traction wheel shaft 2. Therefore, the third baffle 415 overlaps with the fifth baffle 423 to increase the protection strength of the top of the traction wheel shaft 2, and further prevent the traction machine 100 from being damaged by the broken traction rope.

[0049] like Figure 2 As shown, the traction machine 100 also has a rotor mechanism 6 and a stator mechanism 5, wherein the stator mechanism 5 is mounted on the machine base 1, and the rotor mechanism 6 is mounted on the traction wheel shaft 2, and the rotor mechanism 6 is arranged close to the stator mechanism 5, and the rotor mechanism 6 and the stator mechanism 5 are rotatably matched. After the traction machine 100 is powered on, the rotor mechanism 6 and the stator mechanism 5 generate induced electromotive force, the rotor mechanism 6 acts as a rotating magnetic field, and generates electromagnetic torque for energy conversion, providing driving force for the traction wheel shaft 2.

[0050] When quoting drawing descriptions, new features that appear are described; in order to avoid repeated quotations of drawings resulting in less concise descriptions, features that have been described clearly will not be quoted in the drawings one by one.

[0051] The purpose of the above embodiments is to exemplarily reproduce and deduce the technical solution of the utility model, and to fully describe the technical solution, purpose and effect of the utility model. Its purpose is to make the public understand the disclosed content of the utility model more thoroughly and comprehensively, and it does not limit the protection scope of the utility model.

[0052] The above embodiments are not exhaustive enumerations based on the present invention, and there may be multiple other implementations not listed. Any replacement and improvement made without violating the concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. A traction machine, characterized in that: It includes a machine base, a bearing, a limit plate and a traction wheel shaft, wherein the bearing is sleeved outside the traction wheel shaft and installed in the machine base, and the traction wheel shaft is rotatably matched with the machine base through the bearing; the first end of the bearing abuts against one side of the machine base, the limit plate is installed in the machine base, and the limit plate abuts against the second end of the bearing; The machine base has a connecting hole and a fastener, wherein a first end of the fastener passes through the connecting hole and is threadedly connected to the limiting plate; and a second end of the fastener abuts against the other side of the machine base.

2. The traction machine according to claim 1, characterized in that: The machine base has a first mounting groove and a second mounting groove, the first mounting groove is communicated with the second mounting groove, and the first mounting groove and the second mounting groove are both extended along the circumference of the machine base; the bearing is installed in the second mounting groove, and the limit plate is installed in the first mounting groove, and the outer diameter of the first mounting groove is larger than the outer diameter of the second mounting groove.

3. The traction machine according to claim 2, characterized in that: The base includes a first support frame, a second support frame and four connecting columns, wherein the first ends of the four connecting columns are mounted on the four corners of the first support frame, and the second ends of the four connecting columns are mounted on the four corners of the second support frame; The first support frame, four connecting columns and the second support frame are an integrated structure, and the bearing is installed in the first support frame or the second support frame; a hoisting hole is opened on the connecting column, and the hoisting hole is arranged close to the first support frame or the second support frame.

4. The traction machine according to claim 1, characterized in that: The traction machine also includes a brake and a junction box, which are respectively installed at both ends of the machine base. Both ends of the machine base have positioning holes and positioning pins, and the positioning holes are for the positioning pins to pass through. The brake or the junction box cooperates with the machine base through the positioning pins.

5. The traction machine according to claim 4, characterized in that: The junction box includes an outer shell, a first partition and a second partition. A accommodating cavity is formed in the outer shell. The first partition and the second partition are both installed in the outer shell and divide the accommodating cavity of the outer shell into a first wire trough, a second wire trough and a third wire trough. The outer shell has a wiring hole that passes through the inner side from the outer side of the outer shell.

6. The traction machine according to claim 1, characterized in that: The traction machine also has a protection component, which is installed on the machine base. The cross-section of the protection component is U-shaped. At least part of the traction wheel shaft is located in the protection component. The protection component has an opening for the traction rope of the traction wheel shaft to pass through.

7. The traction machine according to claim 6, characterized in that: The protection assembly includes a first protection member and a second protection member, both of which are installed on the machine base, and the first protection member and the second protection member are arranged opposite to each other; the opening is formed between the first protection member and the second protection member, and the traction wheel shaft is located between the first protection member and the second protection member.

8. The traction machine according to claim 7, characterized in that: The first protective member includes a first baffle, a first connecting plate, a second baffle, a second connecting plate and a third baffle, the first baffle is connected to the first end of the first connecting plate, the second end of the connecting plate is bent, the second end of the connecting plate is connected to the first end of the second baffle, and the second baffle is connected to the third baffle through the second connecting plate; the first baffle is vertically arranged to the first connecting plate, and the first connecting plate, the second baffle and the third baffle are parallelly arranged; the protective surface of the third baffle is higher than the protective surface of the second baffle.

9. The traction machine according to claim 8, characterized in that: The second protection member comprises a fourth baffle, a third connecting plate and a fifth baffle, wherein the fourth baffle is connected to a first end of the third connecting plate, the second end of the third connecting plate is bent, the second end of the third connecting plate is connected to the fifth baffle, the third connecting plate is arranged in parallel with the fifth baffle, and the third connecting plate is arranged perpendicular to the fourth baffle; At least a portion of the third baffle overlaps with at least a portion of the fifth baffle.

10. The traction machine according to any one of claims 1 to 9, characterized in that: The traction machine also has a rotor mechanism and a stator mechanism, wherein the stator mechanism is mounted on a machine base, and the rotor mechanism is mounted on a traction wheel shaft. The rotor mechanism is arranged close to the stator mechanism, and the rotor mechanism and the stator mechanism are rotationally matched.

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