Hand-cranking emergency opening and closing device of fixed winch

Abstract

The utility model discloses a fixed winch hand-cranking emergency opening and closing device which comprises a gearbox coupler fixedly connected with a winch gearbox transmission shaft and further comprises a hand-cranking frame body, a first rotating shaft is arranged on the hand-cranking frame body, a movable coupler is arranged on the first rotating shaft, the first rotating shaft can move left and right, and the first rotating shaft moves leftwards. The movable coupler is in butt joint rotation with the gearbox coupler, the first rotating shaft moves rightwards, the movable coupler is separated from the gearbox coupler, and the first rotating shaft is driven by hand cranking. When the gate needs to be closed, the first rotating shaft moves rightwards, the movable coupler and the gearbox coupler are separated and disconnected, the gate falls and is closed by means of self weight, and the gate opening and closing device is simple in structure, convenient to operate, low in design cost, stable in operation, safe and reliable.

Description

Technical Field

[0001] The utility model relates to a fixed winch hand - operated emergency opening and closing device, which relates to the technical fields of hydraulic gate opening and closing devices and reservoir dam safety technology. Background Art

[0002] At present, the hydraulic gate hoisting devices on the market are mainly divided into two categories: hydraulic type and winch type. The hydraulic hoist completely relies on electricity as the power source. To ensure safety, enterprises often need to add multiple sets of backup power supplies, increasing the enterprise cost. In addition to normal power supply and backup power supply, in recent years, some enterprises in the industry have gradually installed on - site power - free emergency opening and closing devices for winch - type hoists. However, fundamentally speaking, a set of diesel generator system still needs to be arranged on - site, which is redundant with the enterprise's backup power supply, and there are many uncertain factors such as equipment failure, fuel shortage, and unskilled operator, so it cannot play its due role. Therefore, looking at the industry at home and abroad, the so - called power - free emergency device cannot do without the support of energy and cannot play a real role in emergency under extreme circumstances. Content of the Utility Model

[0003] The utility model mainly provides a fixed winch hand - operated emergency opening and closing device, which can still accurately control the opening or closing of the gate according to the needs of flood discharge under extreme circumstances such as the disappearance of internal and external power supplies and the failure of the standby emergency generator.

[0004] In order to achieve the above - mentioned utility model purpose, the utility model adopts the following technical solutions:

[0005] The fixed winch hand - operated emergency opening and closing device includes a gearbox coupling fixedly connected to the winch gearbox transmission shaft, and also includes a hand - operated frame body. A first rotating shaft is provided on the hand - operated frame body, and a movable coupling is provided on the first rotating shaft. The first rotating shaft can move left and right. When the first rotating shaft moves to the left, the movable coupling is docked with the gearbox coupling for rotation. When the first rotating shaft moves to the right, the movable coupling is separated from the gearbox coupling. The first rotating shaft is driven by hand - cranking.

[0006] The further technology of the utility model:

[0007] Preferably, a fork support is also provided on the hand - operated frame body. One end of a manual fork is rotatably connected to the fork support, and the other end is hinged to the movable coupling. When the manual fork is pushed to move left, it drives the movable coupling to move left and dock with the gearbox coupling for rotation.

[0008] Preferably, a first gear is provided on the first rotating shaft, a second rotating shaft is provided on the hand - operated frame body, a hand - cranking handle is provided at the end of the second rotating shaft, and a second gear is provided on the second rotating shaft. The second gear meshes with the first gear.

[0009] Preferably, key grooves are provided on the first rotating shaft along the axial direction and on the inner wall of the first gear, and the first rotating shaft moves left and right within the first gear through the key grooves.

[0010] Preferably, the diameter of the first gear is larger than that of the second gear.

[0011] Preferably, a ratchet wheel is fixedly provided on the second rotating shaft, a pawl is provided on the hand-cranked frame body, a pawl spring is cooperatively arranged on the pawl to reset the pawl, and the pawl cooperates with the ratchet wheel to control the second rotating shaft to rotate in a single direction.

[0012] The beneficial effects of the present utility model are as follows:

[0013] When the first rotating shaft moves to the left, the movable coupling is butted and rotated with the gearbox coupling. After the hand-cranked handle is shaken, torque amplification is achieved through gear transmission to operate the opening and closing of the gate. The pawl and the ratchet wheel cooperate to control the second rotating shaft to rotate in a single direction, thereby realizing the self-locking function and meeting the requirement of manually opening the gate to any height; when it is necessary to close the gate, the fork is toggled to the "disengaged" position, the first rotating shaft moves to the right, the movable coupling is separated from the gearbox coupling, and the gate falls by its own weight to close. The structure of the present utility model is simple, the operation is convenient, the design cost is low, the operation is stable, and it is safe and reliable. Description of the Drawings

[0014] Figure 1 is the structural diagram of the present utility model.

[0015] In the drawings, reference numeral 1 - gearbox coupling; 2 - hand-cranked frame body; 3 - first rotating shaft; 4 - movable coupling; 5 - fork support; 6 - manual fork; 7 - first gear; 8 - second rotating shaft; 9 - hand-cranked handle; 10 - second gear; 11 - ratchet wheel; 12 - pawl; 13 - pawl spring. Detailed Embodiments

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be further described in detail below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0017] As Figure 1 shown, a fixed winch hand-cranked emergency opening and closing device includes a gearbox coupling 1 fixedly connected to the winch gearbox transmission shaft;

[0018] It further includes a hand-crank frame body 2, on which a first rotating shaft 3 is provided. An active coupling 4 is provided on the first rotating shaft 3. The first rotating shaft 3 can move left and right. When the first rotating shaft 3 moves left, the active coupling 4 is butted and rotated with the gearbox coupling 1. When the first rotating shaft 3 moves right, the active coupling 4 is separated from the gearbox coupling 1. The first rotating shaft 3 is driven by hand-cranking.

[0019] A fork support 5 is also provided on the hand-crank frame body 2. One end of a manual fork 6 is rotatably connected to the fork support 5, and the other end is hinged to the active coupling 4. When the manual fork 6 is pushed to move left, the active coupling 4 is brought to move left and is butted and rotated with the gearbox coupling 1.

[0020] A first gear 7 is provided on the first rotating shaft 3. A second rotating shaft 8 is provided on the hand-crank frame body 2. A hand-crank handle 9 is provided at the end of the second rotating shaft 8. A second gear 10 is provided on the second rotating shaft 8, and the second gear 10 meshes with the first gear 7.

[0021] Axially along the first rotating shaft 3 and on the inner wall of the first gear 7, there are key grooves that cooperate with each other. The first rotating shaft 3 moves left and right within the first gear 7 through the key grooves.

[0022] The diameter of the first gear 7 is larger than that of the second gear 10, and torque amplification is achieved through gear transmission.

[0023] A ratchet 11 is fixedly provided on the second rotating shaft 8. A ratchet pawl 12 is provided on the hand-crank frame body 2. A ratchet pawl spring 13 is cooperatively provided on the ratchet pawl 12 to reset the ratchet pawl 12. The ratchet pawl 12 cooperates with the ratchet 11 to control the second rotating shaft 8 to rotate in a single direction.

[0024] The fixed winch mainly consists of a motor, a reduction gearbox, a transmission shaft, a drum, a steel wire rope, and an auxiliary protection device, etc. In this embodiment, mainly at the extended shaft end of the transmission shaft of the gearbox of the fixed winch, a gearbox coupling 1 is designed and installed to connect the hand-crank emergency opening and closing device. A fork is designed for the active coupling 4 of the hand-crank emergency opening and closing device, and "connection" and "disconnection" with the transmission shaft of the gearbox of the fixed winch can be realized.

[0025] After connection, after turning the hand-crank handle 9, the requirement of manually opening the gate to any height is met. When the gate needs to be closed, the fork is toggled to the "disconnection" position, the first rotating shaft 3 moves right, the active coupling 4 is separated from the gearbox coupling 1, and the gate falls and closes by its own weight.

[0026] The above content is only an example and explanation of the structure of the present invention. Those skilled in the art of this technology make various modifications or supplements to the described specific embodiments or use similar methods for substitution. As long as they do not deviate from the structure of the invention or exceed the scope defined by this claim book, they should all fall within the protection scope of the present invention.

Claims

1. A hand-cranked emergency opening and closing device for a fixed winch, characterized in that: It includes a gearbox coupling fixedly connected to the winch gearbox drive shaft, and also includes a hand crank frame, the hand crank frame is provided with a first rotating shaft, the first rotating shaft is provided with a movable coupling, the first rotating shaft can move left and right, the first rotating shaft moves left to dock and rotate with the gearbox coupling, the first rotating shaft moves right to separate from the gearbox coupling, and the first rotating shaft is driven by hand crank.

2. The hand-cranked emergency opening and closing device for a fixed winch according to claim 1, characterized in that: A shift fork bracket is also provided on the hand crank frame. One end of the manual shift fork is rotatably connected to the shift fork bracket, and the other end is hinged to the movable coupling. The manual shift fork is moved to the left, which brings out the movable coupling to move to the left and rotates in connection with the gearbox coupling.

3. The hand-cranked emergency opening and closing device for a fixed winch according to claim 1, characterized in that: The first rotating shaft is provided with a first gear, the hand crank frame is provided with a second rotating shaft, a hand crank handle is provided at the end of the second rotating shaft, and the second rotating shaft is provided with a second gear, which is meshed with the first gear.

4. The hand-cranked emergency opening and closing device for a fixed winch according to claim 3 is characterized in that: The first rotating shaft is provided with a matching keyway along the axial direction and the inner wall of the first gear, and the first rotating shaft moves left and right in the first gear through the keyway.

5. The hand-cranked emergency opening and closing device for a fixed winch according to claim 3 is characterized in that: The first gear diameter is greater than the second gear diameter.

6. The hand-cranked emergency opening and closing device for a fixed winch according to claim 3, characterized in that: A ratchet is fixedly provided on the second rotating shaft, a pawl is provided on the hand crank frame, a pawl spring is provided on the pawl to reset the pawl, and the pawl cooperates with the ratchet to control the second rotating shaft to rotate in a single direction.

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