CN218465391U

CN218465391U - Hand-operated device of flat door winch hoist

Info

Publication number: CN218465391U
Application number: CN202222416612.1U
Authority: CN
Inventors: 万东廉; 万俊伟; 郭中意
Original assignee: Henan Xinglong Hydropower Equipment Manufacturing Co ltd
Current assignee: Henan Xinglong Hydropower Equipment Manufacturing Co ltd
Priority date: 2022-09-13
Filing date: 2022-09-13
Publication date: 2023-02-10
Anticipated expiration: 2032-09-13

Abstract

The utility model relates to the technical field of gate driving of a winch hoist, in particular to a hand-operated device of a flat gate winch hoist, which comprises a shell, wherein a driving shaft and a driven shaft are rotationally arranged in the shell, a driving gear and a driven gear which are meshed with each other are fixedly sleeved on the driving shaft and the driven shaft, a key of the driving shaft extending out of the shell is connected with a threaded sleeve, a nut is connected on the threaded sleeve by screw thread, a fixed sleeve is fixedly sleeved on the nut, and the fixed sleeve is connected with a hand crank by a connecting plate; the ratchet wheel is arranged on the driving shaft in a penetrating mode, friction plates are fixed on two sides of the ratchet wheel, the friction wheel is fixed on the driven shaft, the shell is provided with a pawl shaft, a pawl is sleeved on the pawl shaft in a rotating mode, and a torsion spring is sleeved on the pawl shaft and located between the pawl and the shell.

Description

Hand-operated device of flat door winch hoist

Technical Field

The utility model relates to a hoist formula headstock gear gate drive technical field, especially a flat door hoist formula headstock gear's hand cranking device.

Background

The hoisting hoist is common in China and is special opening and closing equipment for operating the rapid gate. The gate valve is widely applied to plane gates and radial gates, and the fact whether the gate can be normally opened or closed is an important guarantee for water level control. In order to avoid power failure, a hand-cranking device is usually arranged on the fixed winch hoist with the power failure rate of below 400 KN. The valve has wide application range in terms of opening and closing force and lift.

The hand-cranking device is usually used as an emergency mode to intervene in the operation of the hoist when the power is interrupted, so that the personnel operating the hand-cranking device are very easy to cause danger if the hoist is suddenly powered on; and in the prior art, the original hand-operated device cannot be fixed, the hand-operated device is unstable, potential safety hazards exist, and the original hand-operated device cannot be used for large-tonnage opening and closing machines.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model discloses specifically adopt following technical scheme.

The hand-operated device of the flat door winch hoist comprises a shell, wherein a driving shaft and a driven shaft are arranged in the shell in a rotating mode, a driving gear is fixedly sleeved on the driving shaft, a driven gear meshed with the driving gear is fixedly sleeved on the driven shaft, one end of the driven shaft extends out of one side of the shell, one end of the driving shaft extends out of the other side of the shell and is in key connection with a threaded sleeve, external threads are arranged on the outer wall of the threaded sleeve, a nut is in threaded connection with the threaded sleeve, a fixing sleeve is fixedly sleeved on the nut, and the fixing sleeve is connected with a hand crank through a connecting plate;

the ratchet wheel is arranged on the driving shaft between the outer wall of the shell and the fixed sleeve in a penetrating mode, friction plates are fixed to two sides of the ratchet wheel through screws respectively, a friction wheel is fixed to the driven shaft between the friction plates and the outer wall of the shell, a pawl shaft extending out of the shell is arranged on the shell and located above the ratchet wheel, a pawl matched with the ratchet wheel is rotatably sleeved on the pawl shaft, and a torsion spring is sleeved on the pawl shaft and located between the pawl and the shell.

Preferably, the diameter of the driving gear is smaller than that of the driven gear.

Preferably, the fixing sleeve is fixed to the nut by a fastening screw.

Preferably, a limit washer is fixedly connected to the driving shaft and positioned outside the fixed sleeve.

Preferably, a pipe sleeve is rotatably sleeved on the hand crank.

Preferably, a first half clutch and a second half clutch which are close to each other are respectively arranged on the driven shaft outside the shell, a travel switch is arranged at a position, close to the first half clutch, on the outer side wall of the shell, the forming switch is fixed on the outer wall of the shell through a support, and the first half clutch is fixed on the driven shaft through a fixing screw.

The beneficial effects of the utility model reside in that:

1. the utility model discloses a setting up first clutch and second clutch and travel switch, first clutch passes through set screw to be fixed on the driven shaft, and through taking off set screw, to casing department promotion first clutch and promotion travel switch, make the headstock gear disconnection, avoid electric power to put through suddenly, bring danger for operating personnel, improve factor of safety.

2. Through the cooperation that sets up ratchet and pawl, can prevent effectively that the gate from falling or the slippage because of the action of gravity when lifting by crane or descend, can prevent effectively that gate equipment from damaging because of falling rapidly, factor of safety and simple to operate when promoting personnel's operation simultaneously, simple to use and stability are high.

3. Through key joint threaded sleeve on the driving shaft, establish the external screw thread on threaded sleeve's outer wall, threaded connection has the nut on threaded sleeve, and fixed sleeve passes through fastening screw to be fixed on the nut, through rotating the crank, make the nut drive fixed sleeve and remove about, make the driving shaft drive driving gear corotation or reversal, thereby meshing driven gear drives driven shaft corotation or reversal, thereby realize the promotion or the decline of gate, when rising or descending suitable position, all can be through fixed sleeve and friction pulley and friction disc with the ratchet fastening on the driving shaft, in order to prevent that the gate from falling rapidly because of gravity and taking place danger, improve hand mechanism's stability simultaneously, and is simple and convenient to operate, and the steam generator is simple in structure.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic diagram of the right-side structure of the present invention;

FIG. 3 isbase:Sub>A schematic view of the structure of FIG. 2 along line A-A;

the reference numbers in the figures are: the device comprises a shell 1, a driving shaft 2, a driving gear 3, a driven shaft 4, a driven gear 5, a pawl 6, a ratchet wheel 7, a friction plate 8, a fixed sleeve 9, a nut 10, a threaded sleeve 11, a limit washer 12, a connecting plate 13, a crank 14, a pipe sleeve 15, a second half clutch 16, a first half clutch 17, a support 18, a travel switch 19 and a friction wheel 20.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example 1

The utility model provides a hand cranking device of flat door hoist formula headstock gear, as shown in fig. 1 to 3, including casing 1, be equipped with driving shaft 2 and driven shaft 4 at casing 1 internal rotation, fixed cover is equipped with driving gear 3 on driving shaft 2, fixed cover is equipped with driven gear 5 with driving gear 3 meshing on driven shaft 4, the diameter of driving gear 3 is less than driven gear 5's diameter, install casing 1 on the mounting bracket of headstock gear during the use, here minor diameter's driving gear 3 drives major diameter's driven gear 5 and rotates, relatively more stable and laborsaving when making hoist formula headstock gear lift the gate.

One side of casing 1 is extended to the one end of driven shaft 4, the opposite side of casing 1 is extended to the one end of driving shaft 2, and key connection has threaded sleeve 11 on the driven shaft 4, and be equipped with the external screw thread on threaded sleeve 11's outer wall, threaded connection has nut 10 on threaded sleeve 11, fixed cover is equipped with fixed sleeve 9 on nut 10, and fixed sleeve 9 passes through fastening screw to be fixed on nut 10, make nut 10 and fixed sleeve 9 ability synchronous motion, be connected with crank 14 through connecting plate 13 on fixed sleeve 9, it is equipped with pipe box 15 to rotate the cover on crank 14, be convenient for adjust the hand gesture, convenient operation.

Wear to be equipped with ratchet 7 on driving shaft 2 between the outer wall of casing 1 and fixed sleeve 9, and be fixed with friction disc 8 respectively through the bolt in the both sides of ratchet 7, it is fixed with friction pulley 20 to lie in between the outer wall of friction disc 8 and casing 1 on driving shaft 2, it is equipped with the 6 axles of pawl that extend casing 1 to lie in the top of ratchet 7 on casing 1, it is equipped with pawl 6 with ratchet 7 complex to rotate the cover on 6 axles of pawl, it is equipped with torsional spring 21 to lie in the cover between pawl 6 and casing 1 on 6 axles of pawl, the cooperation of ratchet 7 and pawl 6, can prevent effectively that the gate from falling or the slippage because of the action of gravity when promoting or descending, can prevent effectively that the gate from damaging because of falling rapidly, promote the factor of safety when gate goes up and down simultaneously, make safe and reliable more when hand.

A limiting washer 12 is fixedly connected to the driving shaft 2 at the outer side of the fixed sleeve 9, and the limiting washer 12 is used for the moving distance of the nut 10.

A first half clutch 17 and a second half clutch 16 which are close to each other are respectively arranged on the driven shaft 4 outside the shell 1, the second clutch 16 is connected with a winch hoist, a travel switch 19 is arranged on the outer side wall of the shell 1 close to the first half clutch 17, the travel switch 19 is fixed on the outer wall of the shell 1 through a support 18, and the first half clutch 17 is fixed on the driven shaft 4 through a fixing screw. Through taking off fastening screw, promote first half clutch 17 to the inboard, first half clutch 17 and the disconnection of second half clutch 16 make first half clutch 17 promote travel switch 19, and the headstock gear outage avoids electric power to put through suddenly this moment, and the operating personnel of hand device takes place dangerously, improves staff's factor of safety.

The utility model discloses a working method does: when the gate valve is in operation, the pipe sleeve 15 is held by hand, when the gate valve ascends, the hand crank 14 is rotated anticlockwise, the nut 10 rotates along the external thread of the threaded sleeve 11, the fixing sleeve 9 is driven to approach the ratchet wheel 7 and tightly pushes against the adjacent friction plate 8, so that the ratchet wheel 7 is clamped on the threaded sleeve 11 by the fixing sleeve 9 and the friction wheel, at the moment, the hand crank 14 is continuously rotated anticlockwise, the driving shaft 2 drives the ratchet wheel 7, the friction plate 8, the friction wheel 20, the fixing sleeve 9 and the driving gear 3 to rotate together, then the driving gear 3 is meshed with the driven gear 5 to drive the driven shaft 4 to rotate clockwise, at the moment, the pawl 21 slides over the ratchet back of the ratchet wheel 7, so that the gate valve ascends, when the gate valve ascends to a proper position, the hand crank 14 stops rotating, and at the moment, the pawl 21 is forbidden and is clamped in the tooth groove of the ratchet wheel 7 in order to prevent the gate valve from sliding downwards; when the gate descends, the hand crank 14 is rotated clockwise, the nut 10 rotates along the external thread of the threaded sleeve 11 and drives the fixed sleeve 9 to move towards the position of the limit washer 12, meanwhile, the fixed sleeve 9 is separated from the adjacent friction plate 8, a gap is formed between the fixed sleeve 9 and the adjacent friction plate 8, until the nut 10 drives the fixed sleeve 9 to move to a state of abutting against the limit washer 12, the ratchet 7 does not work any more at this time, the gate descends under the action of gravity, the driven gear 5 is meshed with the driving gear 3 to rotate reversely, the driving shaft 2 rotates reversely, the nut 10 rotates along the thread of the threaded sleeve 11 and drives the fixed sleeve 9 to move towards the position of the friction plate 8, the ratchet 7 is clamped on the threaded sleeve 11 by the fixed sleeve 9 and the friction wheel again, meanwhile, the pawl 21 clamps the ratchet, the gate does not descend any more, at this time, the hand crank 14 continues to rotate anticlockwise, the action is repeated, the gate continues to descend to a proper position, and the hand crank stops rotating, so that the ascending or descending process of the gate is more stable and reliable.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for some of the features thereof; any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hand-cranking device of a flat door winch hoist comprises a shell (1), wherein a driving shaft (2) and a driven shaft (4) are arranged in the shell (1) in a rotating mode, a driving gear (3) is fixedly sleeved on the driving shaft (2), a driven gear (5) meshed with the driving gear (3) is fixedly sleeved on the driven shaft (4), one end of the driven shaft (4) extends out of one side of the shell (1), the hand-cranking device is characterized in that one end of the driving shaft (2) extends out of the other side of the shell (1) and is connected with a threaded sleeve (11) in a key mode, external threads are arranged on the outer wall of the threaded sleeve (11), a nut (10) is connected onto the threaded sleeve (11) in a threaded mode, a fixing sleeve (9) is fixedly sleeved on the nut (10), and a hand crank (14) is connected onto the fixing sleeve (9) through a connecting plate (13);

wear to be equipped with ratchet (7) on driving shaft (2) between the outer wall of casing (1) and fixed sleeve (9), and be fixed with friction disc (8) respectively through the bolt in the both sides of ratchet (7) be fixed with friction pulley (20) on driving shaft (2) between the outer wall that lies in friction disc (8) and casing (1) the top that lies in ratchet (7) on casing (1) is equipped with pawl (6) axle that extends casing (1) it is equipped with pawl (6) with ratchet (7) complex to rotate the cover on pawl (6) axle be equipped with torsional spring (21) on pawl (6) axle lie in between pawl (6) and casing (1).

2. The hand-operated device of the flat door hoist as claimed in claim 1, wherein: the diameter of the driving gear (3) is smaller than that of the driven gear (5).

3. The hand-operated device of the flat door hoist as claimed in claim 1 or 2, wherein: the fixing sleeve (9) is fixed on the nut (10) through a fastening screw.

4. The hand-operated device of the flat door hoist as claimed in claim 3, wherein: and a limiting washer (12) is fixedly connected to the driving shaft (2) and positioned on the outer side of the fixed sleeve (9).

5. The hand-operated device of the flat door hoist as claimed in claim 1, wherein: a pipe sleeve (15) is rotatably sleeved on the hand crank (14).

6. The hand-operated device of the flat door hoist as claimed in claim 1, wherein: be equipped with first half clutch (17) and second half clutch (16) that are close to each other on driven shaft (4) outside casing (1) respectively be equipped with travel switch (19) near the position department of first half clutch (17) on the lateral wall of casing (1), travel switch (19) are fixed on the outer wall of casing (1) through support (18), first half clutch (17) are fixed on driven shaft (4) through set screw.