Manual door opening and closing device capable of amplifying torque

Abstract

The utility model is applicable to the technical field of large electrically operated gates, and provides a manual door opening and closing device capable of amplifying torque, which comprises a driving wheel connected with a lever, the lever drives the driving wheel to rotate through a one-way transmission mechanism, and the lever is connected with a crank; according to the utility model, the lever principle is utilized, the force of an operator is amplified, so that the electrically operated gate supporting wheel can rotate synchronously, and the electrically operated gate supporting wheel can be driven to rotate synchronously under the conditions of power failure, failure of a door opener, natural disasters or fire alarms and the like. The door can be conveniently opened and closed in a manual operation mode; and the lever can be inserted into the shaft end of the driving wheel when in use and can be pulled out and separated when not in use, thereby being very convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of large electric doors, and in particular relates to a manual door opening and closing device for amplifying torque. Background Art

[0002] Large electric doors or extra-large electric doors weigh several tons to more than ten tons and are driven by electric door openers of several kilowatts to open or close the doors.

[0003] In case of power outage, door opener failure, natural disaster or fire, when the door needs to be opened or closed urgently, it can only be operated by manpower. However, it is extremely difficult to drive a door weighing several tons to more than ten tons by manpower. This is a problem that has not been properly solved in the large electric door or extra-large electric door industry for many years. Summary of the invention

[0004] The purpose of the embodiments of the utility model is to provide a manual door opening and closing device that amplifies torque, aiming to solve the technical problems existing in the prior art mentioned in the background technology.

[0005] The embodiment of the utility model is implemented as follows: a manual door opening and closing device for amplifying torque, the device comprising:

[0006] A driving wheel, wherein the driving wheel is connected to a lever, the lever drives the driving wheel to rotate through a one-way transmission mechanism, and the lever is connected to a crank;

[0007] The driven wheel cooperates with the driving wheel for transmission, and the driven wheel is coaxially fixed with the electric door supporting wheel.

[0008] Preferably, the one-way transmission mechanism includes a ratchet and a double-headed ratchet, the ratchet is coaxially arranged with the driving wheel or the electric door supporting wheel, the double-headed ratchet is hingedly fitted on the lever, and one end of the double-headed ratchet cooperates with the ratchet.

[0009] Preferably, the double-headed ratchet is hingedly connected to the lever via an axle pin.

[0010] Preferably, the driving wheel and the driven wheel are both sprockets, and the driving wheel and the driven wheel are connected by a chain.

[0011] Preferably, the driving wheel and the driven wheel are both gears, and the driving wheel and the driven wheel are meshed for transmission.

[0012] Preferably, the driving wheel and the driven wheel are both pulleys, and the driving wheel and the driven wheel are connected by a synchronous belt.

[0013] Preferably, the shaft end of the driving wheel is provided with a slot that cooperates with the lever.

[0014] The beneficial effects of the embodiments of the utility model are as follows: the lever principle is utilized to amplify the operator's force so that the supporting wheels of the electric door can rotate synchronously, and in the event of a power outage, a malfunction of the door opener, a natural disaster, or a fire, the door can be conveniently opened and closed by manual operation; and the lever can be inserted into the shaft end of the driving wheel when in use, and pulled out and disengaged when not in use, which is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of a manual door opening and closing device for amplifying torque provided by an embodiment of the utility model;

[0016] Figure 2 A side view of a manual door opening and closing device for amplifying torque provided in an embodiment of the utility model.

[0017] In the figure: 1-crank handle, 2-lever, 3-ratchet, 4-double-headed ratchet, 5-driving wheel, 6-driven wheel, 7-electric door supporting wheel, 8-chain, 9-axle pin. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0019] It can be understood that the terms "first", "second", etc. used in the present application can be used in this article to describe various elements, but unless otherwise specified, these elements are not limited by these terms. These terms are only used to distinguish the first element from another element.

[0020] like Figure 1 and 2 As shown, in one embodiment, a manual door opening and closing device for amplifying torque is provided, and the device comprises:

[0021] A driving wheel 5, wherein the driving wheel 5 is connected to a lever 2, and the lever 2 drives the driving wheel 5 to rotate through a one-way transmission mechanism, and the lever 2 is connected to a crank 1;

[0022] The driven wheel 6 cooperates with the driving wheel 5 for transmission, and the driven wheel 6 is coaxially fixed with the electric door supporting wheel 7.

[0023] In actual application of the embodiment of the utility model, the operator drives the lever 2 to rotate by the crank 1, and uses the lever principle to amplify the operator's power to drive the driving wheel 5 to rotate. The driving wheel 5 drives the driven wheel 6 to rotate, so that the electric door supporting wheel 7 can rotate synchronously. In the event of power outages, door opener failures, natural disasters or fire alarms, the door can be easily opened and closed by human operation.

[0024] like Figure 2 As shown, as a preferred embodiment of the utility model, the one-way transmission mechanism includes a ratchet 3 and a double-headed ratchet 4, the ratchet 3 is coaxially arranged with the driving wheel 5 or the electric door supporting wheel 7, and the double-headed ratchet 4 is hingedly matched on the lever 2, and one end of the double-headed ratchet 4 is matched with the ratchet 3.

[0025] In the embodiment of the utility model, the double-headed ratchet 4 has a double-headed structure, so when the lever 2 moves in one direction, it can normally play a locking role. When the lever 2 moves in the opposite direction (for example, forward rotation is to open the door, and reverse rotation is to close the door), it is only necessary to move the double-headed ratchet 4 to the other side to achieve one-way transmission during the door closing movement.

[0026] In one embodiment of the utility model, the double-headed ratchet 4 is hingedly connected to the lever 2 via an axle pin 9. Preferably, the shaft end of the driving wheel 5 is provided with a slot that cooperates with the lever 2, so that the lever 2 is inserted into the shaft end of the driving wheel 5 when in use and pulled out when not in use.

[0027] like Figure 2 As shown, as another preferred embodiment of the utility model, the driving wheel 5 and the driven wheel 6 are both sprocket wheels, and the driving wheel 5 and the driven wheel 6 are connected by a chain 8. The ratchet wheel 3 can also be directly mounted on the axle of the electric door support wheel for use.

[0028] In other words, the driving wheel 5 and the driven wheel 6 are both gears, and the driving wheel 5 and the driven wheel 6 are meshed for transmission. In other words, the driving wheel 5 and the driven wheel 6 are both pulleys, and the driving wheel 5 and the driven wheel 6 are connected by a synchronous belt.

[0029] In the embodiment of the utility model, there can be multiple transmission modes for the driving wheel 5 and the driven wheel 6. This embodiment only lists three modes: sprocket transmission, gear transmission and synchronous belt transmission. In actual application, other modes with the same function can also be selected. This embodiment does not make specific limitations here.

[0030] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A manual door opening and closing device for amplifying torque, characterized in that: The device comprises: A driving wheel (5), the driving wheel (5) is connected to a lever (2), the lever (2) drives the driving wheel (5) to rotate via a one-way transmission mechanism, and the lever (2) is connected to a crank (1); The driven wheel (6) cooperates with the driving wheel (5) for transmission, and the driven wheel (6) is coaxially fixed with the electric door supporting wheel (7).

2. A manual door opening and closing device for amplifying torque according to claim 1, characterized in that: The one-way transmission mechanism comprises a ratchet (3) and a double-headed ratchet (4); the ratchet (3) is coaxially arranged with the driving wheel (5) or the electric door supporting wheel (7); the double-headed ratchet (4) is hingedly engaged with the lever (2); one end of the double-headed ratchet (4) engages with the ratchet (3).

3. A manual door opening and closing device for amplifying torque according to claim 2, characterized in that: The double-headed ratchet (4) is hingedly connected to the lever (2) via an axle pin (9).

4. The manual door opening and closing device for amplifying torque according to claim 1, characterized in that: The driving wheel (5) and the driven wheel (6) are both sprocket wheels, and the driving wheel (5) and the driven wheel (6) are connected via a chain (8).

5. The manual door opening and closing device for amplifying torque according to claim 1, characterized in that: The driving wheel (5) and the driven wheel (6) are both gears, and the driving wheel (5) and the driven wheel (6) are meshed for transmission.

6. The manual door opening and closing device for amplifying torque according to claim 1, characterized in that: The driving wheel (5) and the driven wheel (6) are both pulleys, and the driving wheel (5) and the driven wheel (6) are connected via a synchronous belt.

7. A manual door opening and closing device for amplifying torque according to claim 1, 2 or 3, characterized in that: The shaft end of the driving wheel (5) is provided with a slot that matches the lever (2).

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