CN206318598U - Light hand elevating mechanism hand crank transmission device - Google Patents
Light hand elevating mechanism hand crank transmission device Download PDFInfo
- Publication number
- CN206318598U CN206318598U CN201621221733.9U CN201621221733U CN206318598U CN 206318598 U CN206318598 U CN 206318598U CN 201621221733 U CN201621221733 U CN 201621221733U CN 206318598 U CN206318598 U CN 206318598U
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- China
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- ratchet
- drive sprocket
- power transmission
- transmission shaft
- brake disc
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Abstract
The utility model is related to a kind of light hand elevating mechanism hand crank transmission device, including handle, power transmission shaft, drive sprocket, ratchet, retaining ring, ratchet, bushing, bearing, brake disc, friction plate, retainer nut, power transmission shaft is arranged in two bearings by rolling bearing, brake disc is sequentially arranged with from the inside to the outside on the power transmission shaft for stretching out bearing, drive sprocket, retainer nut, handle, ratchet rear end is equipped with two panels retaining ring and spring, ratchet is connected by bushing in brake disc, ratchet one-way stop connects ratchet, friction plate is respectively equipped with ratchet two sides between brake disc and the drive plate of drive sprocket, for unidirectional friction self-locking, use bull left-handed between power transmission shaft and drive sprocket or the mating connection of dextrorotation trapezoidal thread, it is fixedly connected between brake disc and power transmission shaft, it is fixedly connected between retainer nut and power transmission shaft, form the brake with spindle of unidirectional friction self-locking.The hand crank transmission device possesses hand transmission agency, is provided simultaneously with unidirectional friction self-locking function.
Description
Technical field
The utility model is related to a kind of crane lifting equipment, especially a kind of hand powered lift for crane lifting equipment
Tool hand crank transmission device.
Background technology
The light-duty extraordinary electromechanical equipment such as elevator, lift because carried out after accident or failure power-off it is emergent manually during, it is necessary to
Electro-magnetic braking device manually is freed, by car or the slow decline of hoistable platform deadweight, unidirectional operation is only capable of；Only a few can be real
The crane gear of existing Bidirectional manual, the holdback such as the ratchet that hand crank transmission device is used needs individually control manually, security is low,
Poor reliability.
The content of the invention
The utility model is to provide for a kind of light hand elevating mechanism hand crank transmission device, and the device being capable of Bidirectional hand-operated
Driving, can friction self-locking unidirectional at an arbitrary position, convenience and security when raising equipment is manual during decline.
To achieve the above object, the technical solution of the utility model is：A kind of hand transmission dress of light hand elevating mechanism
Put, including handle, power transmission shaft, drive sprocket, ratchet, retaining ring, ratchet, bushing, bearing, rolling bearing, brake disc, friction
Piece, spring, retainer nut, the power transmission shaft are arranged in two bearings by rolling bearing, stretch out on the power transmission shaft of bearing from
Interior to outer to be sequentially arranged with brake disc, drive sprocket, retainer nut, handle, ratchet rear end is equipped with two panels retaining ring and spring, and it is special
Levy and be：Ratchet, ratchet one-way stop connection ratchet, positioned at brake disc and drive sprocket are connected by bushing in the brake disc
Drive plate between ratchet two sides on be respectively equipped with friction plate, for unidirectional friction self-locking, the power transmission shaft and driving-chain
Use bull left-handed between wheel or the mating connection of dextrorotation trapezoidal thread, be fixedly connected between the brake disc and power transmission shaft, stop
It is fixedly connected between nut and power transmission shaft, forms the brake with spindle of unidirectional friction self-locking.
When dextrorotation trapezoidal thread mating connection between drive sprocket and power transmission shaft, when rotating counterclockwise handle, the transmission
Sprocket wheel contacts connection with retainer nut, makes drive sprocket and power transmission shaft synchronous axial system.
When the handle that stops operating, when goods deadweight rotates clockwise drive sprocket, the drive plate of the drive sprocket with
Friction plate, brake disc connection, ratchet stop connection ratchet, frictional connection between friction plate and ratchet, drive sprocket are used for
Goods is prevented to continue to drop.
When goods declines, when rotating counterclockwise handle, drive sprocket is disengaged with friction plate；When handle velocity of rotation is lagged behind
During goods lapse rate, drive sprocket and friction chip bonding；When handle is rotated further, drive sprocket is disengaged with friction plate.
The beneficial effects of the utility model are：
Hand crank transmission device involved by the utility model can be with Bidirectional manual, unidirectional friction self-locking, and operating personnel are positive, anti-
Any time to during hand can loose one's grip, it is not necessary to other individually operated back-stop mechanisms, improve operation ease and
Device security.The hand crank transmission device possesses hand transmission agency, is provided simultaneously with unidirectional friction self-locking function.
Brief description of the drawings
Fig. 1 is the structure sectional view of light hand elevating mechanism hand crank transmission device of the present utility model.
Embodiment
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of light hand elevating mechanism hand crank transmission device, mainly by handle 1, power transmission shaft 2, driving-chain
Wheel 3, ratchet 4, two panels retaining ring 5, ratchet 6, bushing 7, two bearings 8, two rolling bearings 9, two pieces of glands 10, brake discs
11st, two panels friction plate 12, spring 13, holding screw 14, retainer nut 15 etc. constitute.
Power transmission shaft 2 is arranged in two bearings 8 by rolling bearing 9, stretch out on the power transmission shaft 2 of bearing 8 from the inside to the outside according to
It is secondary that brake disc 11, drive sprocket 3, retainer nut 15, handle 1 are housed.Brake disc 11 installs ratchet 6, ratchet 6 one by bushing 7
Friction plate is respectively equipped between side and the medial surface of brake disc 11 and between the another side of ratchet 6 and the side of drive sprocket 3
12, the ratchet 4 of correspondence ratchet 6 is also equipped with bearing 8, the rear end of ratchet 4 is equipped with two panels retaining ring 5 and spring 13.Power transmission shaft 2 is with passing
Use bull left-handed between movable sprocket 3 or the cooperation of dextrorotation trapezoidal thread, be fixedly connected between brake disc 11 and power transmission shaft 2, stop
It is solid by holding screw 14 by the retainer nut 15 after screw thread adjustable connection, and adjusting position between nut 15 and power transmission shaft 2
It is scheduled on power transmission shaft 2.
So that drive sprocket 3 and the dextrorotation trapezoidal thread of power transmission shaft 2 coordinate as an example, such as Fig. 1（See from left to right）, elevated goods
Deadweight is applied to the torque on hand drive sprocket 3 for clockwise.When hand operating personnel rotate counterclockwise handle 1
When, elevated weight deadweight and system friction resistance can hinder drive sprocket 3 to rotate clockwise.Due to power transmission shaft 2 and driving-chain
It is the connection of dextrorotation trapezoidal thread between wheel 3, the gap increase between drive sprocket 3 and friction plate 12, brake disc 11.Retainer nut
15 fix with power transmission shaft 2, after drive sprocket 3 is contacted with retainer nut 15, drive sprocket 3 and the synchronous axial system of power transmission shaft 2, goods
It is elevated.During this period, ratchet 6 is rotated forward with power transmission shaft 2 with respect to ratchet 4, and retaining ring 5 and the transmission of drive sprocket 3
Small circumferential frictional force can overcome ratchet 4 to conduct oneself with dignity on disk, ratchet 4 is departed from ratchet 6, ratchet 4 will not be slided on ratchet 4
It is dynamic, therefore ratchet 6, ratchet 4 will not rub sounding during lifting.
The handle 1 if hand operating personnel stop operating, goods deadweight can be such that the drive plate of drive sprocket 3 turns clockwise
Dynamic, then drive sprocket 3 is contacted with friction plate 12, brake disc 11, and ratchet 4 also can make ratchet 6 under deadweight and the drive of retaining ring 5
Stop, the frictional force between friction plate 12 and ratchet 6, drive sprocket 3 prevents goods from continuing to drop.
When goods declines, hand operating personnel rotate counterclockwise handle 1, drive sprocket 3 is disengaged with friction plate 12.Ratchet
It is that gap coordinates between ratchet 6 and bushing 7 although 6 by the stop of ratchet 4.Therefore, handle 1 and power transmission shaft 2, drive sprocket
3rd, brake disc 11 is rotated counterclockwise together, drives goods to decline.When the velocity of rotation of handle 1 lags behind goods lapse rate, pass
Movable sprocket 3 is engaged with friction plate 12, and goods decrease speed is restricted.It is rotated further handle 1, drive sprocket 3 and friction plate 12
Disengage, goods can continue to decline.
The function of above-mentioned unidirectional friction self-locking is referred to as brake with spindle.
Claims (4)
1. a kind of light hand elevating mechanism hand crank transmission device, including handle (1), power transmission shaft (2), drive sprocket (3), ratchet
(4), retaining ring (5), ratchet (6), bushing (7), bearing (8), rolling bearing (9), brake disc (11), friction plate (12), spring
(13), retainer nut (15), the power transmission shaft (2) is arranged in two bearings (8) by rolling bearing (9), stretches out bearing (8)
Power transmission shaft (2) on be sequentially arranged with brake disc 11, drive sprocket (3), retainer nut (15), handle (1), the spine from the inside to the outside
Pawl (4) rear end is equipped with two panels retaining ring (5) and spring (13), it is characterised in that：On the brake disc (11) by bushing (7) even
Connect ratchet (6), ratchet (4) one-way stop connection ratchet (6), between the drive plate of brake disc (11) and drive sprocket (3)
Ratchet (6) two sides on be respectively equipped with friction plate (12), for unidirectional friction self-locking, the power transmission shaft (2) and drive sprocket
(3) use bull left-handed between or the mating connection of dextrorotation trapezoidal thread, it is fixed between the brake disc (11) and power transmission shaft (2) to connect
Connect, be fixedly connected between retainer nut (15) and power transmission shaft (2), form the brake with spindle of unidirectional friction self-locking.
2. light hand elevating mechanism hand crank transmission device according to claim 1, it is characterised in that：Work as drive sprocket
(3) between power transmission shaft (2) dextrorotation trapezoidal thread be connected, when rotating counterclockwise handle (1), the drive sprocket (3) with
Retainer nut (15) contact connection, makes drive sprocket (3) and power transmission shaft (2) synchronous axial system.
3. light hand elevating mechanism hand crank transmission device according to claim 1, it is characterised in that：When the hand that stops operating
Handle (1), when goods deadweight rotates clockwise drive sprocket (3), the drive plate of the drive sprocket (3) and friction plate (12),
Brake disc (11) contact connection, ratchet (4) stop connection ratchet (6), friction plate (12) and ratchet (6), drive sprocket (3) it
Between frictional connection, for prevent goods continue drop.
4. light hand elevating mechanism hand crank transmission device according to claim 1, it is characterised in that：When rotating counterclockwise
Handle (1), when goods declines, the drive sprocket (3) disengages with friction plate (12)；When handle (1), velocity of rotation lags behind goods
During thing lapse rate, drive sprocket (3) is engaged with friction plate (12)；When being rotated further handle (1), drive sprocket (3) is with rubbing
Pad (12) is disengaged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621221733.9U CN206318598U (en) | 2016-11-14 | 2016-11-14 | Light hand elevating mechanism hand crank transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621221733.9U CN206318598U (en) | 2016-11-14 | 2016-11-14 | Light hand elevating mechanism hand crank transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206318598U true CN206318598U (en) | 2017-07-11 |
Family
ID=59264094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621221733.9U Active CN206318598U (en) | 2016-11-14 | 2016-11-14 | Light hand elevating mechanism hand crank transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206318598U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106395578A (en) * | 2016-11-14 | 2017-02-15 | 中国船舶重工集团公司第七0四研究所 | Light manually lifted mechanical hand-cranking transmission device |
-
2016
- 2016-11-14 CN CN201621221733.9U patent/CN206318598U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106395578A (en) * | 2016-11-14 | 2017-02-15 | 中国船舶重工集团公司第七0四研究所 | Light manually lifted mechanical hand-cranking transmission device |
| CN106395578B (en) * | 2016-11-14 | 2018-12-18 | 中国船舶重工集团公司第七0四研究所 | Light hand elevating mechanism hand crank transmission device |
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