Lifting mechanism of flexible gate

Abstract

The utility model discloses a flexible gate lifting mechanism which comprises a plurality of lifting units, any lifting unit comprises a power element and two lifting driving mechanisms, each lifting driving mechanism comprises a base, a transmission shaft, a winding drum and a steel wire rope, the bases are used for being connected with a gate frame of a flexible gate, the transmission shafts are rotationally arranged on the bases, the winding drums are arranged on the transmission shafts, and the steel wire ropes are arranged on the transmission shafts; one end of the steel wire rope is fixed to the winding drum, the steel wire rope is spirally wound around the outer side wall of the winding drum, and the power element is connected with the transmission shafts of the two lifting driving mechanisms. According to the lifting mechanism of the flexible gate, the running reliability of the lifting mechanism can be effectively improved, under the condition that a plurality of motors are used in parallel, even if a power element of one lifting unit fails, other motors can still work normally, the running of the lifting mechanism is kept, and therefore the running reliability of the lifting mechanism is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting equipment, in particular to a lifting mechanism for a flexible door. Background Art

[0002] With the rapid development of modern industrial technology, large factories, warehouses, hangars and other places have put forward higher requirements for the opening and closing methods of doors. Although the traditional rigid doors have a stable structure, they are often inconvenient to operate during the opening and closing process due to their large size and heavy weight, and are easily affected by the external environment, such as wind and temperature. Especially in industries such as steel, smelting, and energy processing, the doors need to be opened and closed frequently, and the durability and safety of the doors are extremely high.

[0003] To solve the above problems, flexible doors came into being. Flexible doors are made of high-strength and lightweight materials, and have the advantages of light weight, easy installation, good sealing performance, and strong wind resistance. Among them, the lifting mechanism, as the core component of the flexible door, is directly related to the opening and closing effect of the door.

[0004] The existing flexible door lifting mechanism usually adopts a single large motor, and realizes the lifting and lowering of the flexible door through the transmission shafts on both sides of the motor. The above technical solution has at least the following technical problems:

[0005] 1. Using a single motor to drive the lifting of the flexible door places high demands on the motor and increases the power of the motor. It also places a large instantaneous load on the structure where the motor is located and places relatively high demands on the structure.

[0006] 2. Because the transmission shafts on both sides of the motor are long, the requirements for the transmission shafts are also relatively high, which can easily lead to asynchrony.

[0007] 3. The entire lifting device has only two steel ropes connecting the flexible door, which poses a great safety hazard. Utility Model Content

[0008] In order to solve the deficiencies in the prior art, the present application provides a lifting mechanism for a flexible door.

[0009] In order to achieve the above-mentioned purpose, the technical solution adopted in the present application is: a lifting mechanism for a flexible door, comprising: a plurality of lifting units, any lifting unit comprising a power element and two lifting drive mechanisms, the lifting drive mechanism comprising a base, a transmission shaft, a reel and a steel wire rope, the base is used to connect with the door frame of the flexible door, the transmission shaft is rotatably arranged on the base, the reel is arranged on the transmission shaft, and the central axis of the reel coincides with the central axis of the transmission shaft, one end of the steel wire rope is fixed on the reel, and the steel wire rope is spirally wound on the outer side wall of the reel, and the power element is respectively connected to the transmission shafts of the two lifting drive mechanisms.

[0010] In some embodiments of the present invention, the transmission shaft and the power element are connected via a coupling.

[0011] In some embodiments of the present invention, the power element is a double-headed motor.

[0012] In some embodiments of the utility model, a rope-laying mechanism is provided on the above-mentioned base, and the rope-laying mechanism includes a screw rod, a sliding seat, a guide pulley and a guide rod. The screw rod is rotatably arranged on the base, and the guide rod is fixedly arranged on the base. The screw rod and the guide rod are both passed through the sliding seat, and the screw rod and the sliding seat are threadedly connected. The sliding seat slides freely along the guide rod, and the guide pulley is rotatably arranged on the sliding seat. The wire rope is passed through the guide pulley, and the screw rod is connected to the transmission shaft through a transmission assembly.

[0013] In some embodiments of the utility model, the transmission assembly includes a first pulley, a second pulley and a conveyor belt, the first pulley is arranged on the screw rod, the second pulley is sleeved on the transmission shaft, and the first pulley and the second pulley are connected by a conveyor belt.

[0014] Beneficial effects:

[0015] 1. It can effectively improve the load capacity of the lifting mechanism. Using multiple motors in parallel can balance the load of the lifting mechanism to the power elements of each lifting unit, thereby achieving better performance of the lifting mechanism.

[0016] 2. It can effectively improve the reliability of the operation of the lifting mechanism. When multiple motors are used in parallel, even if the power element of one of the lifting units fails, the other motors can still work normally and keep the lifting device running, thereby improving the reliability of the lifting mechanism.

[0017] 3. Improve the efficiency of the lifting mechanism. Using multiple motors in parallel can share the total load of the lifting mechanism, reduce the load of the motor, and thus improve the lifting efficiency of the lifting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 This is a schematic diagram of the structure of the lifting unit of an embodiment of the utility model;

[0020] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0021] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0022] Figure 4 It is a structural schematic diagram of the lifting drive mechanism of the utility model;

[0023] Figure 5 It is a schematic diagram of an embodiment of the utility model.

[0024] In the figure: 1-power element; 2-base; 3-transmission shaft; 4-drum; 5-wire rope; 6-coupling; 7-screw rod; 8-sliding seat; 9-guide pulley; 10-guide rod; 11-first pulley; 12-second pulley; 13-conveyor belt. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of this application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0029] In addition, if the terms "horizontal" or "vertical" appear in the description of this application, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] Embodiment 1:

[0032] Please refer to Figure 1-Figure 5 The present embodiment provides a lifting mechanism for a flexible door, comprising: a plurality of lifting units, any lifting unit comprising a power element 1 and two lifting drive mechanisms, the lifting drive mechanisms comprising a base 2, a transmission shaft 3, a drum 4 and a wire rope 5, the base 2 is used to be connected to the door frame of the flexible door, the transmission shaft 3 is rotatably arranged on the base 2, the drum 4 is arranged on the transmission shaft 3, and the central axis of the drum 4 coincides with the central axis of the transmission shaft 3, one end of the wire rope 5 is fixed on the drum 4, and the wire rope 5 is spirally wound on the outer wall of the drum 4, and the power element 1 is respectively connected to the transmission shafts 3 of the two lifting drive mechanisms.

[0033] In this embodiment, the flexible door is lifted and lowered by a plurality of lifting units, which can effectively improve the load capacity of the lifting mechanism, the reliability of the operation of the lifting mechanism, and the lifting efficiency of the lifting mechanism. Specifically, the power element 1 where any lifting unit is located is used to provide power for the lifting drive mechanism on both sides thereof, so that the lifting drive mechanisms on both sides of the power element 1 can synchronously retract and release the steel wire rope 5, thereby pulling the lifting and lowering of the flexible door.

[0034] In this embodiment, the base 2 is fixedly mounted on the door frame or building of the flexible gate. The base 2 is used to install the transmission shaft 3 and the drum 4. The transmission shaft 3 can rotate freely on the base 2. The drum 4 is fixed on the transmission shaft 3, and the transmission shaft 3 and the drum 4 rotate coaxially, so that the transmission shaft 3 can transmit the output power to the drum 4, and control the clockwise or counterclockwise rotation of the transmission shaft 3 to realize the rotation of the drum 4 to retract the wire rope 5, thereby realizing the lifting and lowering of the flexible gate. The two ends of the wire rope 5 are respectively fixed to the bottom of the flexible gate and the drum 4, and the wire rope 5 is retracted and released by the rotation of the drum 4, thereby realizing the lifting and lowering of the flexible gate.

[0035] Please refer to Figure 1 and Figure 4 In some implementations of this embodiment, the transmission shaft 3 and the power element 1 are connected via a coupling 6 .

[0036] It should be noted that the coupling 6 is a key part of mechanical transmission and electric transmission. Its main function is to connect the electric motor with the internal combustion engine or other high-speed power source so that the power can be transmitted to the output shaft, and at the same time, the torque from the load is transmitted to the driving shaft to drive the load to rotate. It can also connect two shafts or a shaft and a rotating part, and rotate together during the process of transmitting motion and power, and will not be disengaged under normal circumstances. The coupling 6 not only has a connecting function, but also can realize safety protection functions such as speed change, braking, separation, overload protection, as well as control or adjustment functions such as steering and positioning. At startup, the coupling 6 can also prepare and protect the motor for startup.

[0037] In this embodiment, the coupling 6 is used to connect the power element 1 and the lifting drive mechanism so that the power output by the power element 1 is transmitted to the reel 4, and when the power element 1 is started, the coupling 6 can also prepare and protect it for startup, which can further improve the service life of each power element 1.

[0038] Please refer to Figure 1 In some implementations of this embodiment, the power element 1 is a double-headed motor.

[0039] In this embodiment, the double-headed motor is used to output power symmetrically in both directions, so that the lifting drive mechanisms on both sides of the power element 1 can work together to synchronously lift the flexible door. Specifically, the working principle of the double-headed motor is based on the principle of electromagnetic induction. When current passes through the stator coil, a rotating magnetic field is generated inside the stator. The magnetic poles on the double-ended rotor interact with the rotating magnetic field, causing the rotor itself to start rotating. The output torque of this motor is greater than that of a single-headed motor, so it has higher efficiency, and its operating noise is relatively low.

[0040] Please refer to Figure 1 and Figure 2 In some implementations of the present embodiment, a rope-laying mechanism is provided on the base 2, and the rope-laying mechanism includes a screw rod 7, a sliding seat 8, a guide pulley 9 and a guide rod 10. The screw rod 7 is rotatably provided on the base 2, and the guide rod 10 is fixedly provided on the base 2. The screw rod 7 and the guide rod 10 are both passed through the sliding seat 8. The screw rod 7 and the sliding seat 8 are threadedly connected, and the sliding seat 8 slides freely along the guide rod 10. The guide pulley 9 is rotatably provided on the sliding seat 8, and the wire rope 5 is passed through the guide pulley 9. The screw rod 7 is connected to the transmission shaft 3 through a transmission assembly.

[0041] In this embodiment, the rope arrangement mechanism is used to arrange the steel wire rope 5 wound on the drum 4 closely along the axial direction of the drum 4 to avoid the steel wire rope 5 from piling up or being dispersedly arranged on the drum 4, thereby effectively preventing dislocation and entanglement.

[0042] Specifically, the screw rod 7 is used to obtain power and then rotate, thereby driving the sliding seat 8 to slide on the guide rod 10. The sliding seat 8 is used to install the guide pulley 9 so that the guide pulley 9 can move along the axis of the drum 4. The guide pulley 9 is used to position the guide wire rope 5 to prevent the wire rope 5 from being concentrated on the drum 4. The guide rod 10 is used to cooperate with the screw rod 7 to drive the sliding seat 8, so that the rotational movement of the screw rod 7 is converted into the linear movement of the sliding seat 8.

[0043] When in use, the above-mentioned screw rod 7 is used to rotate after obtaining the kinetic energy transmitted by the transmission component, and then the sliding seat 8 is driven laterally on the guide rod 10. The laterally sliding sliding seat 8 cooperates with the rotation of the drum 4, so that the wire rope 5 positioned by the guide pulley 9 on the sliding seat 8 can be evenly spirally arranged on the outer wall of the drum 4.

[0044] Please refer to Figure 1 and Figure 3 In some implementations of the present embodiment, the transmission assembly includes a first pulley 11, a second pulley 12 and a conveyor belt 13. The first pulley 11 is arranged on the screw rod 7, the second pulley 12 is sleeved on the transmission shaft 3, and the first pulley 11 and the second pulley 12 are connected by the conveyor belt 13.

[0045] In this embodiment, the transmission of power between the first pulley 11 and the second pulley 12 mainly depends on the friction between the conveyor belt 13 and the first pulley 11 and the second pulley 12. When the second pulley 12 rotates under the drive of the transmission shaft 3, the conveyor belt 13 starts to move due to the friction of the second pulley 12; when the conveyor belt 13 enters the contact area of ​​the first pulley 11, the first pulley 11 starts to rotate due to the friction of the belt, thereby driving the rotation of the screw rod 7. Since the rotation of the screw rod 7 and the transmission shaft is the same power source, it is convenient for the two to synchronously adjust the retraction and release of the wire rope 5 and the arrangement of the wire rope 5 on the surface of the drum 4.

[0046] In other embodiments, the transmission mechanism may also be a sprocket transmission.

[0047] When in use, according to the lateral width and weight of the flexible gate, a corresponding number of lifting units are selected, and multiple lifting units are arranged horizontally on the top of the door frame where the flexible gate is installed. Then the base 2 and the power element 1 of the lifting unit are installed along the same horizontal line, and the movement of the double-headed motor is controlled. The transmission shaft 3 at both ends of the double-headed motor rotates, and the rotation of the rotating shaft drives the second pulley 12 to rotate. The second pulley 12 transmits power to the first pulley 11 through the transmission belt, and the first pulley 11 drives the screw rod 7 connected thereto. The above-mentioned screw rod 7 obtains kinetic energy and rotates, and drives the sliding seat 8 horizontally on the guide rod 10. The horizontally sliding sliding seat 8 cooperates with the rotation of the drum 4, so that the wire rope 5 positioned by the guide pulley 9 on the sliding seat 8 is evenly spirally arranged on the outer wall of the drum 4.

[0048] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A lifting mechanism for a flexible door, characterized in that: include: A plurality of lifting units, any of which comprises a power element (1) and two lifting drive mechanisms, wherein the lifting drive mechanisms comprise a base (2), a transmission shaft (3), a drum (4) and a steel wire rope (5), wherein the base (2) is used to be connected to a door frame of a flexible door, the transmission shaft (3) is rotatably arranged on the base (2), the drum (4) is arranged on the transmission shaft (3), and the central axis of the drum (4) coincides with the central axis of the transmission shaft (3), one end of the steel wire rope (5) is fixed on the drum (4), and the steel wire rope (5) is spirally wound on the outer wall of the drum (4), and the power element (1) is respectively connected to the transmission shafts (3) of the two lifting drive mechanisms.

2. A lifting mechanism for a flexible door according to claim 1, characterized in that: The transmission shaft (3) and the power element (1) are connected via a coupling (6).

3. A lifting mechanism for a flexible door according to claim 1, characterized in that: The power element (1) is a double-headed motor.

4. A lifting mechanism for a flexible door according to claim 1, characterized in that: The base (2) is provided with a rope arrangement mechanism, which comprises a screw rod (7), a sliding seat (8), a guide pulley (9) and a guide rod (10). The screw rod (7) is rotatably arranged on the base (2), and the guide rod (10) is fixedly arranged on the base (2). The screw rod (7) and the guide rod (10) are both passed through the sliding seat (8). The screw rod (7) and the sliding seat (8) are threadedly connected, and the sliding seat (8) slides freely along the guide rod (10). The guide pulley (9) is rotatably arranged on the sliding seat (8), and the steel wire rope (5) is passed through the guide pulley (9). The screw rod (7) is connected to the transmission shaft (3) through a transmission component.

5. A lifting mechanism for a flexible door according to claim 4, characterized in that: The transmission assembly comprises a first pulley (11), a second pulley (12) and a conveyor belt (13); the first pulley (11) is arranged on the screw rod (7); the second pulley (12) is sleeved on the transmission shaft (3); the first pulley (11) and the second pulley (12) are connected via the conveyor belt (13).

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