CN207497955U - A kind of manual pulley - Google Patents
A kind of manual pulley Download PDFInfo
- Publication number
- CN207497955U CN207497955U CN201721621441.9U CN201721621441U CN207497955U CN 207497955 U CN207497955 U CN 207497955U CN 201721621441 U CN201721621441 U CN 201721621441U CN 207497955 U CN207497955 U CN 207497955U
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- CN
- China
- Prior art keywords
- unilateral bearing
- support shaft
- rope
- fixedly connected
- rope sheave
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Pulleys (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The utility model provides a kind of manual pulley, the support plate being oppositely arranged including two, and accommodating cavity is configured between two support plates；Central support shaft is vertically arranged in two support plates, for two support plates to be fixedly connected；Unilateral bearing is sheathed in central support shaft, and unilateral bearing is fixedly connected with central support shaft, and unilateral bearing can in accommodating cavity single direction rotation；Rope sheave is sheathed on unilateral bearing, and rope sheave is fixedly connected with unilateral bearing, and the periphery of rope sheave has wedge groove, and wedge groove is used to place rope.Manual pulley disclosed in the present application is simple in structure, and applicability is wide, solves heavy lift and declines in operation, the problem of weight easily slides and causes danger, during especially dropping under heavy load, effect becomes apparent, and has higher safety and practicability.
Description
Technical field
The utility model is related to freight lifting technical field, it particularly relates to a kind of manual pulley.
Background technology
Outdoors movement, construction promotion operation scene, especially one-shot job, usually using common pulley into
Row is promoted and declines operation, and in operation process, the load for promoting and declining weight depends on the ability of operating personnel.
During lifting heavy, the time point for being easiest to occur weight landing is that the hand-off action of operating personnel occurs
When, weight stops rising at this time, and the arm bending degree of operating personnel is maximum, and the state in tractive force minimum, weight is easy to
It slides downwards, weight, due to acceleration of gravity, is difficult to again hold weight once landing.
It is that weight hauls people's slack rope at leisure, in the case that weight weight is bigger than normal, people when weight is declined from the top down
It is easy to draw and does not live weight, weight freely falling body is made to pound earthward, during weight accelerates to decline, operator may be for this
Pulling rope can be gone to sue and labour, and operator can be damaged in this way.
So common pulley is only used for being promoted and declines the weight of Smaller load.Promotion for big load weight, especially
It is to decline, currently no effective solution has been proposed.
Utility model content
The purpose of this utility model is to provide a kind of manual pulley, can solve easily to occur in existing pulley promotion operation
Weight slide problem.
The purpose of this utility model is achieved through the following technical solutions：
The utility model provides a kind of manual pulley, including：
Housing, the housing include two support plates being oppositely arranged, accommodating cavity are configured between two support plates；
Central support shaft is vertically arranged in two support plates, and the central support shaft is used to fix two support plates
Connection；Unilateral bearing is arranged in the accommodating cavity, and is set in the central support shaft, the unilateral bearing and described
Be fixedly connected between central support shaft, the unilateral bearing can in the accommodating cavity single direction rotation；Rope sheave is sheathed on described
It on unilateral bearing, is fixedly connected between the rope sheave and the unilateral bearing, the periphery of the rope sheave has wedge groove, described
Wedge groove is used to place rope.
Wherein, the unilateral bearing can only single direction rotation；During heavy lift, unilateral bearing can be with conventional cunning
Wheel equally works normally, and when landing trend occurs in weight, unilateral bearing does not rotate reversely, forms the slip of rope and rope sheave
Friction, considerably increases frictional force, weight is made to be not easy to slide.
As to further improvement of the utility model, consolidated between the central support shaft and the unilateral bearing using key
Fixed connection.
As to further improvement of the utility model, riveting is used between the central support shaft and the housing or is adopted
With the connection that is screwed.
As to further improvement of the utility model, fixed and connected using key between the unilateral bearing and the rope sheave
It connects.
As to further improvement of the utility model, the angle between the inclined-plane of the wedge groove both sides is 18 °~30 °.
Since the wedge groove has selected a smaller key groove, under gravity, rope is embedded in rope sheave
In, gravity is divided into two power perpendicular to rope sheave inner surface, the two normal pressures are much larger than gravity, are also formed very big
Frictional force.In this way, operator only needs the tractive force of very little that can hold the very big weight of weight, weight is made to be not easy to slide.
There is mounting hole as the top to further improvement of the utility model, the housing, for fixing the hand
Movable pulley.
Compared with prior art, the utility model has the advantage of, manual pulley disclosed in the present application is simple in structure,
Applicability is wide, solves the problems, such as to be unable to lifting weight weight bigger than normal in manual lifting activities, has higher safety and reality
The property used.
Description of the drawings
It is described in detail below in conjunction with attached drawing come the preferred embodiment to the utility model.
Fig. 1 is the front view according to the manual pulley described in the utility model embodiment.
Fig. 2 is the side view according to the manual pulley described in the utility model embodiment.
In figure：
1st, housing；2nd, rope sheave；21st, wedge groove；3rd, unilateral bearing；4th, central support shaft；5th, rope；6th, mounting hole.
In the accompanying drawings, identical component uses identical reference numeral.Attached drawing is not drawn according to practical ratio.
Specific embodiment
The utility model is described further below in conjunction with attached drawing.
Such as Fig. 1 and Fig. 2, it is shown that manual pulley provided by the utility model, including：
Housing, the housing include two support plates 1 being oppositely arranged, are configured to house between two support plates 1
Chamber；Central support shaft 4 is vertically arranged in two support plates 1, and the central support shaft 4 is used for two supports
Plate 1 is fixedly connected；Unilateral bearing 3 is sheathed in the central support shaft 4, the unilateral bearing 3 and the central support shaft 4
Be fixedly connected, and the unilateral bearing 3 can in the accommodating cavity single direction rotation；Rope sheave 2 is sheathed on the unilateral bearing 3
On, the rope sheave 2 is fixedly connected with the unilateral bearing 3, and the periphery of the rope sheave 2 has wedge groove 21, the wedge groove
21 are used to place rope 5.
Wherein, the unilateral bearing 3 can only single direction rotation；During heavy lift, unilateral bearing 3 can and it is conventional
Pulley equally works normally, and when landing trend occurs in weight, unilateral bearing 3 is reversely locked.Meanwhile in the effect of gravity
Under, rope 5 is imbedded in wedge groove 21, and the frictional resistance between rope 5 and rope sheave 2 makes weight be not easy to slide.
It is fixedly connected between the central support shaft and the unilateral bearing preferably by key, other sides can also be used
Formula connects, and the utility model is not restricted.
Preferably by riveting or using the connection that is screwed between the central support shaft and the housing, can also adopt
It otherwise connects, the utility model is not restricted.
It is fixedly connected between the unilateral bearing and the rope sheave preferably by key, other manner can also be used to connect
It connects, the utility model is not restricted.
In one embodiment, the angle between the 21 both sides inclined-plane of wedge groove is 18 °~30 °.Due to the wedge shape
Slot 21 has selected a smaller key groove, and under gravity, rope 5 is imbedded in wedge groove 21, and gravity is divided into two
A power perpendicular to 21 inner surface of wedge groove, the two normal pressures are much larger than gravity, between the rope sheave 2 and the rope 5
It is formed very big frictional force.In this way, operator only needs the tractive force of very little that can hold the very big weight of weight, make
Weight is not easy to slide.
In one embodiment, the top of the housing has mounting hole 6, for fixing the manual pulley.
In one embodiment, the support plate 1 is metallic plate.It should be understood that the support plate 1 may be other
Material, the utility model are not limited.
During promotion, weight is hung over to the end of the rope 5 on the left of manual pulley as shown in Figure 1, operator is pulled with left hand
The right side of rope 5 makes heavy lift, and arm reaches when be most bent, and left hand continues to hold rope 5, and the right hand goes pull rope 5
Epimere, weight stops rising, because the arm bending degree of operating personnel is maximum, the state in tractive force minimum, and weight at this time
Start the trend to glide occur.But due to the presence of unilateral bearing 3, pulley will not reversely rotate, under gravity,
Rope 5 is imbedded in the wedge groove 21 of rope sheave 2, and gravity is divided into two power perpendicular to 21 inner surface of wedge groove, due to wedge groove
Angle between 21 two skew back faces is smaller, and two power perpendicular to 21 inner surface of wedge groove is much larger than gravity, 2 He of rope sheave
Also very big frictional force is formed between the rope 5, operator only needs the tractive force of very little that can hold weight, makes
Weight is not easy to slide.After the right hand holds rope 5, and weight pull-up a distance can be most bent until right hand arm reaches,
Weight stops rising, and rope sheave 2 and the cooperation of unilateral bearing 3 prevent weight from gliding, so repeatedly, by heavy lift, it is not necessary to worry weight
Object slides.
During decline, likewise, weight to be hung over to the end of the rope 5 on the left of manual pulley as shown in Figure 1, due to one-way shaft
3 presence is held, pulley will not reversely rotate, and under gravity, rope 5 is imbedded in the wedge groove 21 of rope sheave 2, and gravity is divided
For two power perpendicular to 21 inner surface of wedge groove, since the angle between 21 two skew back faces of wedge groove is smaller, two vertical
Gravity is much larger than in the power of 21 inner surface of wedge groove, very big friction is also formed between the rope sheave 2 and the rope 5
Power, weight slow downhill race under the frictional force, operator need to only apply the tractive force of very little, it is possible to realize big load weight
Safety declines.
Compared with prior art, the utility model has the advantage of, it is disclosed in the present application a kind of for hand hoisting and
The pulley structure of decline is simple, and applicability is wide, solves the problems, such as to be unable to lifting weight weight bigger than normal in manual lifting activities, tool
There are higher safety and practicability.
Above description is merely a prefered embodiment of the utility model, but scope of protection of the utility model is not limited to
This, any those skilled in the art in technical scope, easily can be changed or be changed disclosed in the utility model, and
This be altered or varied should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should
It is subject to the protection domain of claims.
Claims (6)
1. a kind of manual pulley, which is characterized in that including：
Housing, the housing include two support plates being oppositely arranged, accommodating cavity are configured between two support plates；
Central support shaft is vertically arranged in two support plates, and the central support shaft is used for two support plates
It is fixedly connected；
Unilateral bearing is arranged in the accommodating cavity, and is set in the central support shaft, the unilateral bearing and it is described in
Be fixedly connected between heart support shaft, the unilateral bearing can in the accommodating cavity single direction rotation；
Rope sheave is set on the unilateral bearing, is fixedly connected between the rope sheave and the unilateral bearing, the circle of the rope sheave
Circumferential surface has wedge groove, and the wedge groove is used to place rope.
2. manual pulley according to claim 1, which is characterized in that between the central support shaft and the unilateral bearing
It is fixedly connected using key.
3. manual pulley according to claim 1, which is characterized in that used between the central support shaft and the housing
Riveting uses the connection that is screwed.
4. manual pulley according to claim 1, which is characterized in that key is used between the unilateral bearing and the rope sheave
It is fixedly connected.
5. manual pulley according to claim 1, which is characterized in that the angle between the inclined-plane of the wedge groove both sides is
18 °~30 °.
6. manual pulley according to claim 1, which is characterized in that the top of the housing has mounting hole, for solid
The fixed manual pulley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721621441.9U CN207497955U (en) | 2017-11-29 | 2017-11-29 | A kind of manual pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721621441.9U CN207497955U (en) | 2017-11-29 | 2017-11-29 | A kind of manual pulley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207497955U true CN207497955U (en) | 2018-06-15 |
Family
ID=62506648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721621441.9U Active CN207497955U (en) | 2017-11-29 | 2017-11-29 | A kind of manual pulley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207497955U (en) |
-
2017
- 2017-11-29 CN CN201721621441.9U patent/CN207497955U/en active Active
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| GR01 | Patent grant |