A wire rope guide structure for an elevator hoist

Abstract

The utility model provides a kind of steel wire rope guiding structure of elevator hoist, including installation platform, the two-way reel driven by the output shaft of first driving mechanism is rotatably arranged on the installation platform, left and right two sections coaxially arranged, simultaneously winding or lower steel wire rope is wound outside the two-way reel;The installation platform is further provided with guiding structure;The guiding structure includes the two-way threaded rod driven by the output shaft of second driving mechanism;The two-way threaded rod includes left and right two sections coaxially arranged, and outer thread of opposite rotation direction;Each outer thread of the two-way threaded rod is respectively threadedly connected with guide wheel;The extension end of each steel wire rope passes through the guide wheel of same side;The first driving mechanism and second driving mechanism are electrically connected with controller.The utility model uses same two-way threaded rod for two steel wire ropes, only needs to realize guiding function by one driving mechanism, and structure is simpler and cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of elevator technology, specifically relating to a wire rope guide structure for an elevator crane. Background Technology

[0002] An elevator is a permanent transportation device that serves several specific floors within a building, with its car moving on at least two rigid tracks perpendicular to the horizontal plane or at an angle of less than 15° to the vertical. The wire rope is part of the elevator's lifting structure, while the guide device is part of the wire rope's guiding structure. Existing wire rope guide devices have low guiding and positioning accuracy, which leads to the wire rope frequently twisting and knotting during the crane's winding and unwinding processes. Patent CN217230069U discloses a wire rope guide device for an elevator crane, in which two winding wire ropes are installed on the crane. When the crane rotates, both wire ropes are simultaneously wound or lowered. Each wire rope is equipped with a servo motor-driven screw mechanism for guidance, resulting in a waste of space and equipment costs. Summary of the Invention

[0003] This utility model provides a wire rope guide structure for an elevator crane.

[0004] The purpose of this utility model is achieved in the following manner: a wire rope guiding structure for an elevator crane, comprising a mounting platform, on which a bidirectional drum driven by the output shaft of a first drive mechanism is rotatably mounted; two coaxial sections of wire rope, one on each side and one on the right, are wound around the outside of the bidirectional drum and are simultaneously wound or lowered; the mounting platform is also provided with a guiding structure; the guiding structure includes a bidirectional threaded rod driven by the output shaft of a second drive mechanism; the bidirectional threaded rod includes two coaxial sections of external threads with opposite directions of rotation; each section of the external threads of the bidirectional threaded rod is threadedly connected to a guide wheel; the protruding end of each wire rope passes through the guide wheel on the same side; the first drive mechanism and the second drive mechanism are electrically connected to a controller.

[0005] Each segment of the external thread of the bidirectional threaded rod is threadedly connected to a threaded block, and a guide wheel is provided on the upper surface of each threaded block; a slide rod parallel to the bidirectional threaded rod is fixedly provided on the mounting platform; both threaded blocks are slidably connected to the slide rod.

[0006] Both guide wheels include upper and lower rollers. A rope groove is provided on the outer circumference of the middle position of each roller, and the protruding end of the steel wire rope on the corresponding side passes through the space enclosed by the rope groove of the two rollers.

[0007] The first drive mechanism is a first motor fixedly mounted on the mounting platform; the second drive mechanism is a second motor fixedly mounted on the mounting platform; and the controller is a PLC controller.

[0008] The mounting plate is fixedly connected to the front of the mounting platform. The second motor, the bidirectional threaded rod, the slide rod, and the PLC controller are all located on the upper surface of the mounting plate. A distance sensor is located on the right end of the mounting plate near the bidirectional threaded rod. The distance sensor is electrically connected to the controller.

[0009] Connecting plates are fixedly connected to the left and right sides of the upper surface of the mounting plate, and the bidirectional threaded rod passes through the right connecting plate and two threaded blocks in sequence and is rotatably connected to the right side wall of the left connecting plate; the distance sensor is fixedly installed on the upper surface of the right connecting plate; the mounting plate is provided with a sliding opening parallel to the bidirectional threaded rod and allowing the wire rope to pass through.

[0010] Support plates are fixedly connected to the left and right sides of the upper surface of the mounting platform. The bidirectional drum passes through the right support plate and is rotatably connected to the right side wall of the left support plate. The wire rope is located between the opposite sides of the left and right support plates.

[0011] Compared to existing technologies, this invention ensures that the wire rope does not twist or knot during winding and unwinding by setting a guiding structure. Both wire ropes use the same bidirectional threaded rod, requiring only one drive mechanism to achieve the guiding function, resulting in a simpler structure and reduced costs. Furthermore, this invention uses a bidirectional drum to wind and unwind the wire ropes, and the bidirectional threaded rod synchronously moves the two wire ropes closer or further apart. This symmetrical structure provides greater stability in the stress distribution on the wire ropes and the elevator car. Attached Figure Description

[0012] Figure 1 This is the front view of this utility model.

[0013] Figure 2 This is a top view of the present invention.

[0014] The components include: 1. Mounting platform; 2. First motor; 3. Bidirectional drum; 4. Wire rope; 5. Mounting plate; 6. Second motor; 7. Bidirectional threaded rod; 8. Threaded block; 9. Slide rod; 10. Guide wheel; 11. PLC controller; 12. Support plate; 13. Connecting plate; and 14. Distance sensor. Detailed Implementation

[0015] In this utility model, unless otherwise expressly specified and limited, the technical terms used in this application shall have the ordinary meaning understood by those skilled in the art. Terms such as "connected," "linked," "fixed," and "set" shall be interpreted broadly, referring to fixed connections, detachable connections, or integral connections; direct connections or indirect connections via an intermediate medium; mechanical connections or electrical connections. Unless otherwise expressly specified and limited, "above" or "below" a second feature may mean that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," or "over" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "under" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. Relational terms such as "first," "second," etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms used in the description, such as “center,” “lateral,” “longitudinal,” “length,” “width,” “thickness,” “height,” “front,” “rear,” “left,” “right,” “up,” “down,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “axial,” “radial,” “circumferential,” “clockwise,” and “counterclockwise,” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation.

[0016] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Figure 1-2As shown, a wire rope guiding structure for an elevator crane includes a mounting platform 1. A bidirectional drum 3, driven by the output shaft of a first drive mechanism, is rotatably mounted on the mounting platform 1. Two coaxial sections of wire rope 4, either on the left or right, are wound around the outside of the bidirectional drum 3 and are simultaneously wound or lowered. The mounting platform 1 also includes a guiding structure. The guiding structure includes a bidirectional threaded rod 7, driven by the output shaft of a second drive mechanism. The bidirectional threaded rod 7 includes two coaxial sections of external threads with opposite directions of rotation. Each external thread of the bidirectional threaded rod 7 is threaded with a guide wheel 10. The protruding end of each wire rope 4 passes through the guide wheel 10 on the same side. The first and second drive mechanisms are electrically connected to a controller. The bidirectional drum 3 may include a left rope groove and a right rope groove, coaxially arranged and with opposite directions of rotation. There is a gap between the left and right rope grooves. Wire rope 4, either simultaneously wound or lowered, is wound in the left and right rope grooves respectively. The opposite rotation direction here refers to the fact that when the wire rope 4 is wound in the left and right rope grooves, both sections of the wire rope 4 start winding from the middle of the bidirectional drum 3 towards both ends, or both sections of the wire rope 4 start winding from both ends of the bidirectional drum 3 towards the middle position. In other words, the axial movement directions are opposite when the wire ropes at both ends are wound or unwound. The bidirectional threaded rod 7 here can also be a high-precision structure such as a ball screw. Because the two threads of the bidirectional threaded rod 7 have opposite directions, when the bidirectional threaded rod 7 rotates, the two guide wheels 10 move in opposite directions along the bidirectional threaded rod 7, corresponding to the axial movement directions of the two wire ropes 4. Preferably, the axial distance between the two sections of the wire rope 4 on the bidirectional drum 3 corresponds to the axial position of each thread of the bidirectional threaded rod 7, ensuring a more stable guiding process and better force distribution on the wire rope 4. This utility model ensures that the wire rope will not twist or knot during the winding and unwinding process by setting the guiding structure. The two wire ropes 4 use the same bidirectional threaded rod 7, requiring only one drive mechanism to achieve the guiding function, resulting in a simpler structure and reduced costs. Furthermore, this invention employs the bidirectional drum 3 to wind and unwind the wire ropes 4, and the bidirectional threaded rod 7 synchronously moves the two wire ropes 4 closer or further apart. This symmetrical structure ensures greater stability of the force on the wire ropes 4 and the elevator car.

[0017] Furthermore, each segment of the external thread of the bidirectional threaded rod 7 is threadedly connected to a threaded block 8, and the upper surface of each threaded block 8 is connected to a guide wheel 10; a slide rod 9 parallel to the bidirectional threaded rod 7 is fixedly mounted on the mounting platform 1; both threaded blocks are slidably connected to the slide rod 9. The guide wheel 10 may have a rope groove to allow the steel wire rope 4 to pass through. The guide wheel 10 is slidably mounted on the slide rod 9 to ensure greater stability during movement. The slide rod 9 may be located on one side or below the bidirectional threaded rod 7.

[0018] Furthermore, each of the two guide wheels 10 includes upper and lower rollers. A rope groove is formed around the outer circumference of the middle position of each roller, allowing the protruding end of the corresponding steel wire rope 4 to pass through the space enclosed by the rope grooves of the two rollers. Specifically, two parallel vertical plates are fixedly mounted on the upper surface of the threaded block 8, and the ends of the upper and lower rollers are rotatably mounted on the corresponding vertical plates. The positions of the rope grooves on the two rollers correspond, forming a space adjacent to each other for the steel wire rope 4 to pass through. Alternatively, the guide wheel 10 can be a single wheel, fixedly or rotatably mounted on the upper end of the threaded block 8.

[0019] Specifically, the first drive mechanism is a first motor 2 fixedly mounted on the mounting platform 1; the second drive mechanism is a second motor 6 fixedly mounted on the mounting platform 1; and the controller is a PLC controller 11.

[0020] Furthermore, the mounting plate 5 is fixedly connected to the front of the mounting platform 1. The second motor 2, the bidirectional threaded rod 7, the slide rod 9, and the PLC controller 11 are all mounted on the upper surface of the mounting plate 5. A distance sensor 14 is installed on the mounting plate 5 near the right end of the bidirectional threaded rod 7. The distance sensor 14 is electrically connected to the controller. Specifically, the second motor 6 is fixedly connected to the upper surface of the mounting plate 5, and the PLC controller 11 is located to the right of the second motor 6 and is fixedly connected to the upper surface of the mounting plate 5.

[0021] Furthermore, connecting plates 13 are fixedly connected to both the left and right sides of the upper surface of the mounting plate 5, and the bidirectional threaded rod 7 sequentially passes through the right connecting plate 13 and two threaded blocks 8 and is rotatably connected to the right side wall of the left connecting plate 13; the distance sensor 14 is fixedly mounted on the upper surface of the right connecting plate 13; the mounting plate 5 is provided with a sliding opening parallel to the bidirectional threaded rod 7, allowing the wire rope 4 to pass through. Additionally, the left end of the sliding rod 9 is fixedly connected to the right side wall of the left connecting plate 13 and the right end is fixedly connected to the left side wall of the right connecting plate 13, and the sliding rod 9 sequentially passes through two threaded blocks 8, and the sliding rod 9 can be located below the bidirectional threaded rod 7. The sliding opening is a through groove penetrating the mounting plate 5.

[0022] Furthermore, support plates 12 are fixedly connected to the left and right sides of the upper surface of the mounting platform 1, and the bidirectional drum 3 passes through the right support plate 12 and is rotatably connected to the right side wall of the left support plate 12, with the wire rope 4 located between opposite sides of the left and right support plates 12. The two support plates 12 ensure the stable rotation of the bidirectional drum 3, thereby ensuring the winding and unwinding of the wire rope 4. All electrical components mentioned herein are electrically connected to the main controller and power supply. The main controller can be a conventionally known device such as a computer, and existing publicly available power connection technologies are used, which will not be elaborated upon here.

[0023] In specific implementation: The elevator crane's wire rope guide structure. During installation, the initial positions of the two threaded blocks 8 are adjusted to correspond to the positions of the corresponding wire ropes 4. When passengers use the elevator, the PLC controller 11 receives an instruction to start the first motor 2, which drives the bidirectional drum 3 to rotate, thereby causing the wire ropes 4 to rise or fall. At the same time, based on the information from the distance sensor 14, the PLC controller 11 starts the second motor 6 to rotate in the forward or reverse direction. This, in conjunction with the slide bar 9, causes the two threaded blocks 8 to move horizontally outside the bidirectional threaded rod 7. The horizontal displacement of the two threaded blocks 8 then drives the guide wheel 10 to move horizontally, thereby causing the corresponding wire ropes 4 to move horizontally, thus preventing the wire ropes 4 from twisting and knotting.

[0024] The technical features of the embodiments described above can be combined in any way, and as long as there is no contradiction in the combination of these technical features, they should all be considered within the scope of this specification. Without departing from the overall concept of this utility model, any equivalent substitutions or modifications made to the technical solution of this utility model, as well as any changes and improvements, should also be considered within the protection scope of this utility model.

Claims

1. A wire rope guide structure for an elevator crane, comprising a mounting platform (1), characterized in that: The mounting platform (1) is rotatably mounted with a bidirectional drum (3) driven by the output shaft of the first drive mechanism. The bidirectional drum (3) has two coaxial sections of steel wire rope (4) wound around its outer side, which are wound up simultaneously or below. The mounting platform (1) is also provided with a guide structure. The guide structure includes a bidirectional threaded rod (7) driven by the output shaft of the second drive mechanism. The bidirectional threaded rod (7) includes two coaxial sections of external threads with opposite directions of rotation. Each section of the external threads of the bidirectional threaded rod (7) is threaded with a guide wheel (10). The protruding end of each steel wire rope (4) passes through the guide wheel (10) on the same side. The first drive mechanism and the second drive mechanism are electrically connected to a controller.

2. The wire rope guide structure for an elevator crane according to claim 1, characterized in that: Each section of the external thread of the bidirectional threaded rod (7) is threadedly connected to a threaded block (8), and a guide wheel (10) is provided on the upper surface of each threaded block (8); a slide rod (9) parallel to the bidirectional threaded rod (7) is fixedly provided on the mounting platform (1); both threaded blocks are slidably connected to the slide rod (9).

3. The wire rope guide structure for an elevator crane according to claim 2, characterized in that: Both guide wheels (10) include upper and lower rollers. A rope groove is provided on the outer circumference of the middle position of each roller, and the protruding end of the corresponding steel wire rope (4) passes through the space enclosed by the rope groove of the two rollers.

4. The wire rope guide structure for an elevator crane according to claim 2, characterized in that: The first drive mechanism is a first motor (2) fixedly mounted on the mounting platform (1); the second drive mechanism is a second motor (6) fixedly mounted on the mounting platform (1); the controller is a PLC controller (11).

5. The wire rope guide structure for an elevator crane according to claim 4, characterized in that: The mounting plate (5) is fixedly connected to the front of the mounting platform (1). The second motor (6), the bidirectional threaded rod (7), the slide rod (9), and the PLC controller (11) are all located on the upper surface of the mounting plate (5). A distance sensor (14) is located on the right end of the mounting plate (5) near the bidirectional threaded rod (7). The distance sensor (14) is electrically connected to the controller.

6. The wire rope guide structure for an elevator crane according to claim 5, characterized in that: A connecting plate (13) is fixedly connected to the left side and the right side of the upper surface of the mounting plate (5), and the bidirectional threaded rod (7) passes through the connecting plate (13) on the right side and the two threaded blocks (8) in sequence and is rotatably connected to the right side wall of the connecting plate (13) on the left side; the distance sensor (14) is fixedly installed on the upper surface of the connecting plate (13) on the right side; the mounting plate (5) is provided with a sliding opening that is parallel to the bidirectional threaded rod (7) and allows the wire rope (4) to pass through.

7. The wire rope guide structure for an elevator crane according to claim 1, characterized in that: Support plates (12) are fixedly connected to the left and right sides of the upper surface of the mounting platform (1), and the bidirectional drum (3) passes through the right support plate (12) and is rotatably connected to the right side wall of the left support plate (12), and the wire rope (4) is located between the opposite sides of the left and right support plates (12).

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