CN207514114U - A kind of brake structure in crane cable speed-limiting device - Google Patents
A kind of brake structure in crane cable speed-limiting device Download PDFInfo
- Publication number
- CN207514114U CN207514114U CN201721674798.3U CN201721674798U CN207514114U CN 207514114 U CN207514114 U CN 207514114U CN 201721674798 U CN201721674798 U CN 201721674798U CN 207514114 U CN207514114 U CN 207514114U
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- China
- Prior art keywords
- wall
- pulley body
- brake
- block
- mounting hole
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Abstract
The utility model provides the brake structure in a kind of crane cable speed-limiting device, and speed-limiting device includes pulley body, offers a mounting hole in the middle part of pulley body, a support shaft is inserted in mounting hole；Several sliding slots corresponding with the outer wall of retaining segment are evenly arranged on the inner wall of mounting hole, slidably connected in sliding slot has the brake(-holder) block in gap between the outer wall of retaining segment, brake(-holder) block and a brake structure that can be slided when pulley body is rotated to the outer wall direction of retaining segment；Brake structure includes a cunning chamber being opened in pulley body, and sliding intracavitary slidably connects a sliding block, cable limiting slot is offered on the peripheral surface of pulley body；A regulator hole is offered on the inner wall of cable limiting slot, regulator hole is threaded with the regulator bolts stretched into valve chamber；A resetting spring is connected between the inner end of regulator bolts and the outer end of valve block.The utility model has advantages of simple structure and simple.
Description
Technical field
The utility model belongs to field of mechanical technique, the brake structure being related in a kind of crane cable speed-limiting device.
Background technology
Cable crane refers to make somebody a mere figurehead bearing carrier using flexible cable as large span, exist for the loading trolley of suspension heavy weight
It is moved back and forth on carrying rope, there is vertical transport and horizontal transport.For in the range of larger space, being risen to cargo
Weight, transport and handling operation.
Speed limit is carried out to cable, is the important safety measure of cable crane, cable crane, by more than ten, very
Match control and the guide frame being combined into drag hook to tens pulleys, if it is possible to speed-limiting device is set on pulley, it will be big
The big security performance and endurance quality for improving cable crane is also capable of the safety monitoring of significantly smaller crane and automatically controlled is set
It applies, so as to simplify its structure, improves reliability,
Invention content
The purpose of this utility model is for the above problem existing for existing technology, provides a kind of crane cable speed limit
Brake structure in device, technical problem to be solved in the utility model are how to drive rotary speed of the brake(-holder) block to pulley
It is limited.
The purpose of this utility model can be realized by following technical proposal：A kind of system in crane cable speed-limiting device
Dynamic structure, which is characterized in that speed-limiting device includes pulley body, and a mounting hole is offered in the middle part of the pulley body, described
A support shaft is inserted in mounting hole；The inner wall of the hole installing is respectively arranged with a support shaft close to two openings of mounting hole
It holds, is connected between the support shaft and pulley body by spring bearing, support shaft is located at one section between two spring bearings
Referred to as retaining segment is evenly arranged with several sliding slots corresponding with the outer wall of retaining segment on the inner wall of the mounting hole, described
Slidably connected in sliding slot has the brake(-holder) block in gap between the outer wall of retaining segment, and the brake(-holder) block and one can be in pulleys
The brake structure slided when ontology rotates to the outer wall direction of retaining segment；The brake structure is opened in pulley body including one
Interior cunning chamber, the sliding intracavitary slidably connect a sliding block, cable limiting slot are offered on the peripheral surface of the pulley body；Institute
It states and a regulator hole is offered on the inner wall of cable limiting slot, the regulator hole is threaded with a pressure regulation spiral shell stretched into valve chamber
Bolt；A resetting spring is connected between the inner end of the regulator bolts and the outer end of valve block.
It, can be with the pressure of the hydraulic oil of control valve intracavitary, so as to adjust by adjusting bolt outwardly or inwardly precession or back-out
The maximum speed limit of pulley is saved, the cleaning in the replacement and valve chamber of the hydraulic oil in valve chamber can also be realized by regulator hole.
Resetting spring is in tensional state, can push away movable valve block and inwardly reset, and valve block is made to be acted on while needed by centrifugal force
Resist resetting spring pressure, make speed limit more accurate, also make by regulator bolts carry out speed limit adjusting sensitivity and can
By spending higher.
In brake structure in a kind of above-mentioned crane cable speed-limiting device, it is provided in the pulley body several
Ventilation hole on the outside of piston.
Description of the drawings
Fig. 1 is the overall structure diagram of this speed-limiting device.
Fig. 2 is the sectional view on A directions in Fig. 1.
In figure, 11, pulley body；12nd, mounting hole；13rd, ventilation hole；2nd, support shaft；21st, retaining segment；22nd, dust storage groove；23、
Cable limiting slot；24th, regulator hole；3rd, spring bearing；41st, sliding slot；42nd, brake(-holder) block；43rd, wearing layer；51st, valve opening；52nd, valve body；
53rd, valve chamber；54th, valve block；55th, exocoel；56th, inner cavity；57th, piston；58th, connecting plate；59th, via hole；61st, regulator bolts；62nd, it is multiple
Position spring；63rd, spout hole.
Specific embodiment
It is specific embodiment of the utility model and with reference to attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
As depicted in figs. 1 and 2, this speed-limiting device includes pulley body 11, and the middle part of pulley body 11 offers an installation
Hole 12 is inserted with a support shaft 2 in mounting hole 12；12 inner wall of mounting hole is respectively arranged with close to two openings of mounting hole 12
One spring bearing 3, is connected between support shaft 2 and pulley body 11 by spring bearing 3, and support shaft 2 is located at two spring bearings 3
Between one section be referred to as retaining segment 21, it is corresponding with the outer wall of retaining segment 21 to be evenly arranged with several on the inner wall of mounting hole 12
Sliding slot 41, slidably connect the brake(-holder) block 42 between the outer wall of retaining segment 21 with gap in sliding slot 41, brake(-holder) block 42 with
One driving mechanism that can be slided when pulley body 11 is rotated to the outer wall direction of retaining segment 21.
By two bearing bearings, by for one section of the support shaft 2 of braking, i.e. retaining segment 21 is isolated, and prevents ash
The sundries such as dirt interfere and influence braking ability.
Driving mechanism includes a valve opening 51 communicated with sliding slot 41, has the valve body 52 of a bar shape, valve in valve opening 51
In body 52 there is a valve chamber 53, slidably connect a valve block 54 in valve chamber 53, valve chamber 53 is divided into positioned at valve block 54 by valve block 54
The exocoel 55 in outside and the piston 57 that an annular is slidably connected in the inner cavity 56 of 54 inside of valve block, valve opening 51, piston 57
It is connected between brake(-holder) block 42 by the connecting plate 58 of an annular, it is outer to offer several connections on the valve body 52 in 57 outside of piston
The via hole 59 of chamber 55 and valve opening 51；Hydraulic oil is filled in the valve opening 51 of 57 outer end of piston and in valve chamber 53；Pulley rotates,
Valve block 54 slides in valve chamber 53 to the direction far from support shaft 2 under the action of the centrifugal force, so as to squeeze the hydraulic pressure in valve chamber 53
Valve chamber 53 and valve opening 51 is connected in oil, via hole 59, and piston 57, which is pressurized, drives brake(-holder) block 42 close to the outer wall direction of retaining segment 21,
Gear turbine RPM reaches setting value, when causing the hydraulic fluid pressure in valve opening 51 to be enough to drive the brake(-holder) block 42 contacted with brake axle,
Brake(-holder) block 42 carries out pulley body 11 speed limit, so completes the limitation for being rotated up to speed to pulley body 11.
Piston 57 and connecting plate 58 are cyclic structure, have preferable intensity and support stationarity, in braking process, system
42 Impact direction of movable plate is vertical with the stretching direction of connecting plate 58, and connecting plate 58 can resist the torque of vertical direction and constant
Shape；Driving mechanism can also push brake(-holder) block 42 to the close cylinder of retaining segment 21.
Cable limiting slot 23 is offered on the peripheral surface of pulley body 11；A tune is offered on the inner wall of cable limiting slot 23
Hole 24 is pressed, regulator hole 24 is threaded with the regulator bolts 61 stretched into valve chamber 53；It is outwardly or inwardly revolved by adjusting bolt
Into or screw out, the pressure of the hydraulic oil in valve chamber 53 can be controlled, so as to the maximum speed limit of adjustable pulley, the liquid in valve chamber 53
Cleaning in the replacement and valve chamber 53 of pressure oil can also be realized by regulator hole 24.
A resetting spring 62 is connected between the inner end of regulator bolts 61 and the outer end of valve block 54；Resetting spring 62, which is in, to be drawn
State is stretched, movable valve block 54 can be pushed away and inwardly resetted, valve block 54 is made to be acted on by centrifugal force while needs the pressure of resistance resetting spring 62
Power, makes speed limit more accurate, also makes to carry out the sensitivity of speed limit adjusting and reliability higher by regulator bolts 61；Hydraulic oil
Pressure and spring reset force it is dual valve block 54 is resetted, realize brake force it is synchronous with pulley speed.
The spout hole 63 of several connection inner cavities 56 and exocoel 55 is offered on valve block 54；On vibrating reed outside retaining segment 21
There is wearing layer 43 on the one side of wall.
Several dust storage grooves being distributed in the axial direction 22 are offered on the outer wall of retaining segment 21；Section hydraulic oil passes through work
Gap between plug 57 and valve body 52 is penetrated on brake(-holder) block 42, friction coefficient between brake(-holder) block 42 and retaining segment 21 is made to become smaller, and leads to
The setting of dust storage groove 22 is crossed, which can be squeezed into dust storage groove 22, is also stored up the bits end that brake(-holder) block 42 is formed
There are in dust storage groove 22, keep 21 wall surface of retaining segment smooth clean.
Several ventilation holes 13 positioned at 57 outside of piston are provided in pulley body 11.
It should be noted that：Arrestment mechanism can be by hydraulic control, can be by hydraulic pressure and resetting spring group
It closes realizing or separately through resetting spring realization.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Described specific embodiment can be done various modifications or additions or using similar by belonging to those skilled in the art
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (2)
1. a kind of brake structure in crane cable speed-limiting device, which is characterized in that speed-limiting device includes pulley body (11),
A mounting hole (12) is offered in the middle part of the pulley body (11), a support shaft (2) is inserted in the mounting hole (12)；Institute
Two openings that mounting hole (12) inner wall is stated close to mounting hole (12) are respectively arranged with a spring bearing (3), the support shaft
(2) be connected between pulley body (11) by spring bearing (3), support shaft (2) between two spring bearings (3) one
Section is referred to as retaining segment (21), several outer walls pair with retaining segment (21) are evenly arranged on the inner wall of the mounting hole (12)
The sliding slot (41) answered, the sliding slot (41) is interior to slidably connect the brake(-holder) block between the outer wall of retaining segment (21) with gap
(42), the brake(-holder) block (42) can be slided with one when pulley body (11) is rotated to the outer wall direction of retaining segment (21)
Brake structure；The brake structure includes a cunning chamber being opened in pulley body (11), and the sliding intracavitary slidably connects
One sliding block offers cable limiting slot (23) on the peripheral surface of the pulley body (11)；The cable limiting slot (23) it is interior
A regulator hole (24) is offered on wall, the regulator hole (24) is threaded with the regulator bolts stretched into valve chamber (53)
(61)；A resetting spring (62) is connected between the inner end of the regulator bolts (61) and the outer end of valve block (54).
A kind of 2. brake structure in crane cable speed-limiting device according to claim 1, which is characterized in that the pulley
Several ventilation holes (13) on the outside of piston (57) are provided on ontology (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721674798.3U CN207514114U (en) | 2017-12-04 | 2017-12-04 | A kind of brake structure in crane cable speed-limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721674798.3U CN207514114U (en) | 2017-12-04 | 2017-12-04 | A kind of brake structure in crane cable speed-limiting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207514114U true CN207514114U (en) | 2018-06-19 |
Family
ID=62543105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721674798.3U Expired - Fee Related CN207514114U (en) | 2017-12-04 | 2017-12-04 | A kind of brake structure in crane cable speed-limiting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207514114U (en) |
-
2017
- 2017-12-04 CN CN201721674798.3U patent/CN207514114U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180619 Termination date: 20201204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |