Toothed belt type hinged door opening mechanism

Abstract

The utility model belongs to the technical field of elevator hinged doors, and particularly relates to a toothed belt type hinged door opening mechanism which comprises a machine base, the machine base is arranged at the top of a hinged door, the machine base is fixedly connected to the top of the hinged door, a motor is fixedly connected to one side of the machine base, and the output end of the motor extends into the machine base. A moving part is arranged in the machine base. The toothed belt type hinged door opening mechanism has the advantages that accurate control over door opening and closing can be achieved, synchronous operation of double doors is controlled in a mechanical transmission mode, the synchronous precision is 0.01 arc second, the stability of the door opening and closing process is improved, power consumption is greatly reduced, the scheme can be implemented regardless of the size, the weight and the installation type of the door, applicability is improved, the fault rate is greatly reduced, and the service life of the door is prolonged. Fault points are eliminated, part damage and faults caused by external resistance are eradicated, meanwhile, personnel safety is guaranteed on the premise that the current national standard is met, and the effects of a hidden installation mode, attractiveness, elegance and the like are achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of elevator hinge doors, and specifically relates to a toothed belt type hinge door opening mechanism. Background Art

[0002] During the construction process at a construction site, a construction elevator is generally required to lift and transport materials. This type of elevator is usually called a construction elevator and is a special-purpose elevator for carrying people and goods at a construction site. It is a special equipment that needs to be used at a construction site and is usually used in conjunction with a tower crane. For the convenience of use, current construction elevators generally use hinge doors.

[0003] Elevator hinge doors are not only used in construction elevator products in the elevator industry, but also in commercial and household elevators. The existing technologies have the following defects:

[0004] First, a reduction motor is installed with a swing arm, and the swing arm is used to push the door leaf to open and close. This method has poor accuracy, poor stability, high power consumption, and extremely high failure rates.

[0005] Second, the output shaft of the reduction motor directly acts on the door shaft, applying torque to the door shaft to achieve the opening and closing of the door. This method is greatly affected by external components (such as the weight of the door, the method and position of the door shaft, etc.), so its adaptability is low. And due to the defect of its driving principle, the strength of the components is difficult to support the input of reverse force, so it is extremely easy to cause damage to internal components.

[0006] Third, in scenarios where automatic opening and closing of hinge doors are required in buildings, factories, hospitals, etc., most of them now use an additional set of mechanisms to push the door leaf through a swing arm to achieve opening and closing, with poor aesthetics and complex structures (posing potential safety hazards). Content of the Utility Model

[0007] The purpose of this utility model is to provide a toothed belt type hinge door opening mechanism, which can achieve the following objectives: 1. Accurately control the opening and closing position of the door (0.01 second angle); 2. Improve stability through a complete mechanical structure; 3. Reduce power consumption through the transmission design of the mechanical structure; 4. Reduce external resistance through the transmission design of the mechanical structure to ensure the strength of the overall mechanism; 5. Limit the kinetic energy during the opening and closing of the door through mechanical components to meet the national standard requirements (≤7 joules); 6. Supply sufficient feedback signals to the control unit through the cooperation of mechanical and electrical components; 7. Hide the opening mechanism inside the door frame to ensure aesthetics.

[0008] The technical solutions adopted by this utility model are specifically as follows:

[0009] Toothed belt type hinge door opening mechanism, including a machine base, the machine base is arranged at the top of the hinge door, the machine base is fixedly connected to the top of the hinge door, one side of the machine base is fixedly connected with a motor, the output end of the motor extends into the interior of the machine base, a moving component is arranged inside the machine base, the moving component is movably connected inside the machine base through a lead screw, a toothed belt is sleeved at the bottom of the surface of the moving component, the bottom of the surface of the moving component is hinged to the toothed belt, and a toothed belt pulley is engaged inside the toothed belt.

[0010] A tensioning structure is arranged inside the toothed belt, and the tensioning structure is located on the side away from the toothed belt pulley.

[0011] The technical effects achieved by this utility model are as follows:

[0012] The toothed belt type hinge door opening mechanism of this utility model can achieve precise control of door opening and closing (0.01 arcseconds), control the synchronous operation of double-leaf doors through mechanical transmission, with a synchronous accuracy of 0.01 arcseconds, improve the stability during the door opening and closing process, significantly reduce power consumption (currently 60w, this scheme is 6 - 15w), can be implemented regardless of the size, weight, and installation type of the door, improve applicability, significantly reduce the failure rate, eliminate failure points, prevent component damage and failures caused by external resistance, and ensure personnel safety while meeting the current national standards, and has the effect of a concealed installation method, being beautiful and generous.

[0013] For the toothed belt type hinge door opening mechanism of this utility model, the tensioning structure is a device in a mechanical system used to maintain the tension of transmission systems such as belts and chains. Its main function is to keep appropriate tension on belts, chains, etc. during the transmission process to avoid problems such as slipping, skipping teeth, and tooth disengagement, and at the same time reduce the wear of sprockets and chains, ensure the tension of the toothed belt, and thus achieve an efficient rotation effect. Description of the Drawings

[0014] Figure 1 is the opening and closing state of the hinge door of this utility model;

[0015] Figure 2 is this utility model Figure 1 The enlarged view at position A in;

[0016] Figure 3 is this utility model Figure 1 The top view of;

[0017] Figure 4 is the closed state of the hinge door of this utility model;

[0018] Figure 5 is this utility model Figure 4 The enlarged view at position B in;

[0019] Figure 6 is this utility model Figure 4Top view;

[0020] Figure 7 It is a schematic diagram of the base of this utility model.

[0021] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0022] 1. Base; 2. Motor; 3. Moving part; 4. Toothed belt; 5. Toothed belt pulley; 6. Torque limiting device; 7. Tensioning structure; 8. Fixed connecting piece; 9. Hole; 10. Control main board. Specific implementation mode

[0023] In order to make the purpose and advantages of this utility model clearer, the following will specifically describe this utility model in combination with embodiments. It should be understood that the following text only describes one or several specific implementation modes of this utility model, and does not strictly limit the scope of protection specifically claimed by this utility model.

[0024] As Figures 1 to 7 shown, the toothed belt type hinge door opening mechanism includes a base 1, the base 1 is arranged at the top of the hinge door, the base 1 is fixedly connected to the top of the hinge door. When the hinge door frame is produced, a groove for installation needs to be reserved at the top, so that the base 1 and each component can be installed into the groove to complete the effect of hidden installation. The base 1 is a mechanism for carrying each component of this device and plays a connecting role. One side of the base 1 is fixedly connected with a motor 2, the output end of the motor 2 extends into the interior of the base 1, the power of the motor 2 is 6 - 15W. Compared with the existing motor with a power of about 60W, this application can greatly reduce power consumption. The motor 2 is the power source of the entire door opening mechanism and can be used to provide power for this device. A moving part 3 is arranged inside the base 1, the moving part 3 is movably connected inside the base 1 through a lead screw, and the lead screw is threadedly connected with the moving part 3. The moving part 3 can translate inside the base 1 according to the lead screw, so as to generate a change in the relative position with the door leaf, providing the basis for opening and closing and transmitting power. The motor 2 can drive the moving part 3 to move inside the base 1 through the lead screw. A toothed belt 4 is sleeved at the bottom of the surface of the moving part 3, and the bottom of the surface of the moving part 3 is hinged with the toothed belt 4. The toothed belt 4 generates an angular change relative to the door leaf through cooperation with the moving part 3, thereby realizing the opening and closing of the door and transmitting power at the same time. A toothed belt pulley 5 is meshed inside the toothed belt 4, and the bottom of the toothed belt pulley 5 passes through the door frame through a connecting rod and is fixedly connected to the door panel. When the toothed belt 4 moves, it will drive the toothed belt pulley 5 to rotate, so that the door panel can be driven to rotate through the connecting rod, thereby completing the adjustment of the angle. Through the cooperation of the toothed belt pulley 5 and the toothed belt 4, the adjustment can reach a minimum of 0.01 arcseconds, achieving high-precision opening and closing control.

[0025] As Figure 2As shown, the motor 2 can be any one of a linear motor, a pneumatic component, or a hydraulic component, or it can also be replaced by components that can transmit linear movement, such as a lead screw structure, gears, racks, link rods, swing rods, toothed belts, chains, etc., thereby increasing the adaptability diversity. Different drive components can be selected according to the requirements of different working environments, thus expanding the applicable range and reducing limitations.

[0026] As Figure 2 and Figure 5 shown, a torque limiting device 6 is fixedly connected inside the machine base 1. The torque limiting device 6 is simultaneously fixedly connected to both the motor 2 and the lead screw. The torque limiting device 6 is a safety device used to limit the torque output of a machine or equipment when it exceeds a predetermined torque value, in order to protect the machine, personnel, and environment from damage caused by accidental overload. The torque limiting device 6 usually consists of a torque limiter. Its working principle is to control the output torque of the machine or equipment by measuring and limiting the torque. According to different types and application fields, the torque limiting device 6 can adopt different forms and designs, including mechanical, hydraulic, electronic, etc. The mechanical torque limiting device 6 usually uses mechanical mechanisms and components such as springs to measure and limit the torque, and has the advantages of simple structure, high reliability, and long service life, but the setting accuracy and response speed are relatively low. The torque limiting device 6 can transmit power through its function of adjusting the transmitted torque size, and sense the resistance size. When the resistance size reaches the predetermined rule value, the power output is disconnected through a mechanical structure, and the power output is restored when the external resistance is eliminated.

[0027] As Figure 2 and Figure 7 shown, a tensioning structure 7 is provided inside the toothed belt 4. The tensioning structure 7 is located on the side away from the toothed belt pulley 5. The tensioning structure 7 is a device in a mechanical system used to maintain the tension of transmission systems such as belts and chains. Its main function is to keep the belts, chains, etc. under appropriate tension during the transmission process to avoid problems such as slipping, tooth skipping, and tooth disengagement, and at the same time reduce the wear of sprockets and chains, and can ensure the tension of the toothed belt 4 to avoid slipping, thereby achieving an efficient transmission effect.

[0028] As Figure 7 shown, fixed connection pieces 8 are fixedly connected to both sides of the machine base 1. Holes 9 are provided on the surface of the fixed connection pieces 8. The machine base 1 can be connected to the inner surface of the wall opening through the cooperation of the fixed connection pieces 8 and the holes 9, thereby strengthening the stability of the machine base 1.

[0029] As Figure 7 shown, a control main board 10 is fixedly connected to the surface of the machine base 1. The control main board 10 is electrically connected to the motor 2. A rated speed can be preset inside the control main board 10 to control the speed of the motor 2, and sensors can also be connected to achieve the effect of automatic drive.

[0030] The working principle of this utility model is as follows: When this application is working, corresponding working changes will be made according to the actual situation;

[0031] When the door is in normal driving with the closed state: After the motor 2 receives the forward rotation instruction for opening the door, it starts to rotate forward at the rated speed. The rated speed refers to the speed given by the control main board 10, not the actual rated speed of the motor 2. This speed can be set through the control main board 10. The power output by the motor 2 is first transmitted to the torque limiting device 6 through the coupling device. The torque limiting device 6 automatically determines whether the torque value is greater than the set value (this value can be manually adjusted through the torque limiting device). When it is not greater than the torque set value, the power is conducted by the lead screw to the moving part 3, and then the position and angle changes are conducted to the toothed belt 4 through the moving part 3. Finally, the toothed belt 4 drives the toothed belt wheel 5 according to the position and angle change amount, converting the power into the final dimension of the door opening position to achieve the door opening process. The door closing process is actually the reverse of the above process;

[0032] Abnormal driving when the external resistance is greater than the preset value: For example, at any position or moment during the operation process, if the torque limiting device 6 determines that the external resistance is greater than the preset value, and the torque limiting device 6 adjusts manually by itself, then the torque limiting device 6 will disconnect the power transmission between the motor 2 and the moving part 3, making the door leaf in a freely opening and closing state, thus protecting the safety of personnel. At the same time, the motor 2 is in an idling state, thus protecting the safety of the equipment itself. Once the external resistance is less than the preset value, with the participation of the electronic control element, the motor is stopped and reversed. At this time, the torque limiting device 6 will automatically resume the power transmission between the motor 2 and the moving part 3, and achieve the purpose of running in reverse when encountering resistance and resuming normal operation;

[0033] This device can also complete the simultaneous driving of double doors: The driving of double doors is achieved by adding a set of symmetric moving parts 3 and toothed belts 4, replacing the single-direction lead screw for power transmission with a coaxial bidirectional lead screw. Through the reversibility of the coaxial bidirectional lead screw, the reverse movement of the two moving parts 3 is realized, thereby driving the toothed belts 4 respectively installed on the two doors to cause position and angle changes of the opposite door leaves, and finally realizing the synchronous opening and closing of the double doors.

[0034] The above description is only the preferred implementation mode of this utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of this utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of this utility model. The structures, devices, and operation methods not specifically described and explained in this utility model, without special instructions and limitations, are implemented according to the conventional means in this field.

Claims

1. Toothed belt hinge door opening mechanism, characterized by: The invention comprises a machine base (1), wherein the machine base (1) is arranged at the top of a hinged door, the machine base (1) is fixedly connected to the top of the hinged door, a motor (2) is fixedly connected to one side of the machine base (1), the output end of the motor (2) extends to the inside of the machine base (1), a moving component (3) is arranged inside the machine base (1), the moving component (3) is movably connected to the inside of the machine base (1) through a screw rod, a toothed belt (4) is sleeved on the bottom of the surface of the moving component (3), the bottom of the surface of the moving component (3) is hinged to the toothed belt (4), and a toothed belt wheel (5) is meshed inside the toothed belt (4).

2. The toothed belt hinge door opening mechanism according to claim 1, characterized in that: The motor (2) is selected from any one of a linear motor, a pneumatic element, and a hydraulic element.

3. The toothed belt hinge door opening mechanism according to claim 1, characterized in that: The base (1) is internally fixedly connected with a torque limiting device (6), and the torque limiting device (6) is simultaneously fixedly connected to the motor (2) and the lead screw.

4. The toothed belt hinge door opening mechanism according to claim 1, characterized in that: A tensioning structure (7) is provided inside the toothed belt (4), and the tensioning structure (7) is located on a side away from the toothed belt wheel (5).

5. The toothed belt hinge door opening mechanism according to claim 1, characterized in that: Both sides of the machine base (1) are fixedly connected with fixed connecting plates (8), and the surface of the fixed connecting plates (8) is provided with holes (9).

6. The toothed belt hinge door opening mechanism according to claim 1, characterized in that: A control mainboard (10) is fixedly connected to the surface of the machine base (1), and the control mainboard (10) is electrically connected to the motor (2).

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