CN104444916A - Friction brake for hoisting machine - Google Patents
Friction brake for hoisting machine Download PDFInfo
- Publication number
- CN104444916A CN104444916A CN201410710657.7A CN201410710657A CN104444916A CN 104444916 A CN104444916 A CN 104444916A CN 201410710657 A CN201410710657 A CN 201410710657A CN 104444916 A CN104444916 A CN 104444916A
- Authority
- CN
- China
- Prior art keywords
- ratchet
- worm gear
- box body
- worm
- friction part
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/16—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes for action on ropes or cables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D2700/00—Capstans, winches or hoists
- B66D2700/03—Mechanisms with latches or braking devices in general for capstans, hoists or similar devices as well as braking devices actuated electrically or by fluid under pressure
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The invention discloses a friction brake for a hoisting machine. The friction brake comprises a case body. Two discs located on the same axis are arranged in the case body and fixed to the front wall and the rear wall of the case body respectively. A worm wheel is hinged to the portion between the two discs, a worm is meshed with the portion below the worm wheel, one end of the worm is connected with a belt wheel with a motor, the other end of the worm is connected with a conical friction part, a ratchet wheel is arranged on the outer side of the friction part, an inner taper hole matched with the friction part in shape is formed in the ratchet wheel, the friction part abuts against the inner taper hole of the ratchet wheel, and a pawl is connected above the ratchet wheel and fixed to the inner wall of the case body through a pin shaft. The friction brake for the hoisting machine is stable in braking operation and can prevent the hoisting machine from slipping.
Description
Technical field
The present invention relates to the safety apparatus on elevator machinery, particularly relate to a kind of frictin braek on elevator machinery.
Background technology
The braking force of crane brake is a steady state value, once drg works, will by hoisting crane stop immediately, if the heavily loaded hoisting crane laterally run is by unexpected stop, the weight being suspended on steel rope lower end will produce the very large swing of amplitude, the lighter can break equipment, the major industrial accident of personal casualty may be there is in severe one, in addition, weight on hoisting crane is in transfer process, also may due to breakdown of equipment or other reasons, cause slipping of brake, steel rope falls, there is serious work safety accident, so the weight that also should prevent hoisting crane from slinging surprisingly drops, therefore a kind of braking of design is stable, the frictin braek on elevator machinery preventing equipment from skidding becomes shocking problem to be solved.
Summary of the invention
The object of the present invention is to provide and a kind ofly brake the frictin braek on elevator machinery that is stable, that can prevent equipment from skidding.
To achieve these goals, the invention provides following technical scheme: the frictin braek on elevator machinery, comprise box body, two disks be positioned on same axis are provided with in described box body, on the antetheca that described two disks are separately fixed at box body and rear wall, worm gear is hinged with between described two disks, the below engagement of described worm gear is provided with worm screw, one end of described worm screw is connected with the belt pulley of translator, the other end of described worm screw is connected with in cone shape friction part, ratchet is provided with outside described friction part, the internal taper hole with friction part mating shapes is provided with in described ratchet, described friction part is in the internal taper hole being located at ratchet, the top of described ratchet is connected with ratchet, described ratchet is fixed on the inwall of box body by bearing pin.
The principle of this programme is such: by weight by steel wire hang on worm gear, the elevator system of worm gear and hoisting crane is connected, the hand of rotation of worm gear is associated with the up-and-down movement of crane hook, two disks in box body mainly play a supportive role to worm gear, axial force when worm gear and worm mesh makes this worm screw produce axial displacement, worm screw left end is the internal taper hole of cone shape friction part near ratchet, because worm screw is connected with the belt pulley of translator, machine operation drives worm screw to rotate, worm screw drives worm gear wheel, worm gear scrolling steel wire, the weight on worm gear is driven to rise, ratchet slides on the back of tooth of ratchet, do not affect normally carrying out of transmission, work as device fails, when causing slipping of brake, steel wire on worm gear has downtrend under the pulling of weight, thus when reversal of stroke ratchet by brake ratchet, make ratchet can produce friction drag to the friction part on worm screw with the internal taper hole of friction part mating shapes, by means of the friction force between friction part and internal taper hole, the continuation of weight is stoped to decline.
The invention has the advantages that: this frictin braek on elevator machinery, adopt worm gear, worm screw coordinate ratchet and pawl, braking is stable, and can prevent equipment from skidding and cause the problem of work safety accident.
Preferably, described ratchet is fixed by screws on the inwall of box body, installation, convenient disassembly.
Preferably, the diameter of described two disks is identical, and the diameter of disk is greater than the external diameter of worm gear, makes two disks produce spacing and fixing effect to worm gear therebetween, prevents from producing shake in worm gear wheel process, and can deposit the steel wire on worm gear scrolling.
Preferably, described worm gear is located in the middle part of the internal cavity of box body, and weight on worm gear, and is connected with worm screw by steel wire hang below worm gear, be conducive to weight in lifting process, uniform force and balance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the frictin braek embodiment of the present invention on elevator machinery.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Reference numeral in Figure of description comprises: box body 1, disk 2, worm gear 3, worm screw 4, belt pulley 5, friction part 6, ratchet 7, internal taper hole 8, ratchet 9, weight 10.
As shown in Figure 1, frictin braek on elevator machinery, comprise box body 1, two disks 2 be positioned on same axis are provided with in box body 1, the diameter of two disks 2 is identical, on the antetheca that two disks 2 are separately fixed at box body 1 and rear wall, worm gear 3 is hinged with between two disks 2, the below engagement of worm gear 3 is provided with worm screw 4, one end of worm screw 4 is connected with the belt pulley 5 of translator, the other end of worm screw 4 is connected with in cone shape friction part 6, ratchet 7 is provided with outside friction part 6, ratchet 7 is fixed by screws on the inwall of box body 1, the internal taper hole 8 with friction part 6 mating shapes is provided with in ratchet 7, friction part 6 is in the internal taper hole 8 being located at ratchet 7, the top of ratchet 7 is connected with ratchet 9, ratchet 9 is fixed on the inwall of box body 1 by bearing pin, the diameter of disk 2 is greater than the diameter of worm gear 3, worm gear 3 is located in the middle part of the internal cavity of box body 1.
In the present embodiment, by weight 10 by steel wire hang on worm gear 3, worm gear 3 is connected with the elevator system of hoisting crane, the hand of rotation of worm gear 3 is associated with the up-and-down movement of crane hook, two disks 2 in box body 1 mainly play a supportive role to worm gear 3, axial force when worm gear 3 engages with worm screw 4 makes this worm screw 4 produce axial displacement, worm screw 4 left end is the internal taper hole 8 of cone shape friction part 6 near ratchet 7, because worm screw 4 is connected with the belt pulley 5 of translator, machine operation drives worm screw 4 to rotate, worm screw 4 drives worm gear 3 to rotate, worm gear 3 scrolling steel wire, the weight 10 on worm gear 3 is driven to rise, ratchet 9 slides on the back of tooth of ratchet 7, do not affect normally carrying out of transmission, work as device fails, when causing slipping of brake, steel wire on worm gear 3 has downtrend under the pulling of weight 10, thus when reversal of stroke ratchet 9 by brake ratchet 7, make ratchet 7 can produce friction drag to the friction part 6 on worm screw 4 with the internal taper hole 8 of friction part 6 mating shapes, by means of the friction force between friction part 6 and internal taper hole 8, the continuation of weight 10 is stoped to decline.
Ratchet 7 is fixed by screws on the inwall of box body 1, install, convenient disassembly, the diameter of two disks 2 is identical, and the diameter of disk 2 is greater than the external diameter of worm gear 3, two disks 2 are made to produce spacing and fixing effect to worm gear 3 therebetween, prevent from producing shake in worm gear 3 rotation process, and the steel wire can deposited on worm gear 3 scrolling, worm gear 3 is located in the middle part of the internal cavity of box body 1, weight 10 by steel wire hang on worm gear 3, and below worm gear 3, be connected with worm screw 4, be conducive to weight 10 in lifting process, uniform force and balance, this frictin braek on elevator machinery, adopt worm gear 3, worm screw 4 also coordinates ratchet 7 and ratchet 9, braking is stable, and can prevent equipment from skidding and cause the problem of work safety accident.
Above-described is only the preferred embodiment of the present invention; should be understood that; for a person skilled in the art; under the prerequisite not departing from structure of the present invention; some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.
Claims (4)
1. the frictin braek on elevator machinery, it is characterized in that, comprise box body, two disks be positioned on same axis are provided with in described box body, on the antetheca that described two disks are separately fixed at box body and rear wall, worm gear is hinged with between described two disks, the below engagement of described worm gear is provided with worm screw, one end of described worm screw is connected with the belt pulley of translator, the other end of described worm screw is connected with in cone shape friction part, ratchet is provided with outside described friction part, the internal taper hole with friction part mating shapes is provided with in described ratchet, described friction part is in the internal taper hole being located at ratchet, the top of described ratchet is connected with ratchet, described ratchet is fixed on the inwall of box body by bearing pin.
2. the frictin braek on elevator machinery as claimed in claim 1, it is characterized in that, described ratchet is fixed by screws on the inwall of box body.
3. the frictin braek on elevator machinery as claimed in claim 1, it is characterized in that, the diameter of described two disks is identical, and the diameter of disk is greater than the external diameter of worm gear.
4. the frictin braek on elevator machinery as claimed in claim 1, it is characterized in that, described worm gear is located in the middle part of the internal cavity of box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410710657.7A CN104444916A (en) | 2014-11-30 | 2014-11-30 | Friction brake for hoisting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410710657.7A CN104444916A (en) | 2014-11-30 | 2014-11-30 | Friction brake for hoisting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104444916A true CN104444916A (en) | 2015-03-25 |
Family
ID=52891788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410710657.7A Pending CN104444916A (en) | 2014-11-30 | 2014-11-30 | Friction brake for hoisting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104444916A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191416906A (en) * | 1914-01-20 | 1916-01-20 | Anton Maria Felix Bolzani | Improvements in or relating to Screw Brakes for Lifting And Lowering or like Apparatus. |
| GB479499A (en) * | 1936-08-04 | 1938-02-04 | Thomas Carlyle Ellison Rowland | Improvements relating to vehicle brakes |
| GB573853A (en) * | 1943-10-16 | 1945-12-10 | Emil Perman | Improvements in and relating to devices for preventing overloading of geared pulley hoists |
| SU1643428A1 (en) * | 1988-10-20 | 1991-04-23 | Управление Забайкальской Железной Дороги | Hand winch |
| CN2312924Y (en) * | 1997-06-09 | 1999-04-07 | 全显旷 | Self-controlling-brake hoist engine |
| CN201010471Y (en) * | 2007-03-26 | 2008-01-23 | 潘以恒 | Hanging tongs lifting hand winch |
| CN204281171U (en) * | 2014-11-30 | 2015-04-22 | 重庆三贵机械制造有限公司 | Frictin braek on elevator machinery |
-
2014
- 2014-11-30 CN CN201410710657.7A patent/CN104444916A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191416906A (en) * | 1914-01-20 | 1916-01-20 | Anton Maria Felix Bolzani | Improvements in or relating to Screw Brakes for Lifting And Lowering or like Apparatus. |
| GB479499A (en) * | 1936-08-04 | 1938-02-04 | Thomas Carlyle Ellison Rowland | Improvements relating to vehicle brakes |
| GB573853A (en) * | 1943-10-16 | 1945-12-10 | Emil Perman | Improvements in and relating to devices for preventing overloading of geared pulley hoists |
| SU1643428A1 (en) * | 1988-10-20 | 1991-04-23 | Управление Забайкальской Железной Дороги | Hand winch |
| CN2312924Y (en) * | 1997-06-09 | 1999-04-07 | 全显旷 | Self-controlling-brake hoist engine |
| CN201010471Y (en) * | 2007-03-26 | 2008-01-23 | 潘以恒 | Hanging tongs lifting hand winch |
| CN204281171U (en) * | 2014-11-30 | 2015-04-22 | 重庆三贵机械制造有限公司 | Frictin braek on elevator machinery |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |