CN207699096U - A kind of crane cable speed-limiting device - Google Patents
A kind of crane cable speed-limiting device Download PDFInfo
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- CN207699096U CN207699096U CN201721679755.4U CN201721679755U CN207699096U CN 207699096 U CN207699096 U CN 207699096U CN 201721679755 U CN201721679755 U CN 201721679755U CN 207699096 U CN207699096 U CN 207699096U
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- valve
- block
- limiting device
- wall
- brake
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Abstract
The utility model provides a kind of crane cable speed-limiting device, this speed-limiting device includes pulley body, and a mounting hole is offered in the middle part of pulley body, a support shaft is inserted in mounting hole；Inner wall of the hole installing is respectively arranged with a spring bearing close to two openings of mounting hole, it is connected by spring bearing between support shaft and pulley body, be located between two spring bearings one section of support shaft is referred to as retaining segment, several sliding slots corresponding with the outer wall of retaining segment are evenly arranged on the inner wall of mounting hole, the brake(-holder) block with gap between the outer wall of retaining segment, brake(-holder) block and a driving mechanism that can be slided to the outer wall direction of retaining segment when pulley body is rotated are slidably connected in sliding slot.The utility model has many advantages, such as purely mechanic control, non-maintaining, reliability is high.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to a kind of crane cable speed-limiting device.
Background technology
Cable crane refers to that bearing carrier is maked somebody a mere figurehead using flexible cable as large span, is existed for the loading trolley of suspension heavy weight
It is moved back and forth on carrying rope, has the function of vertical transport and horizontal transport.For within the scope 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, to simplify its structure, improves reliability,
Invention content
The purpose of this utility model is the existing above problem in view of the prior art, provides a kind of crane cable speed limit
Device, technical problem to be solved in the utility model be how by way of skidding, to the rotary speed of pulley into
Row limitation.
The purpose of this utility model can be realized by following technical proposal：A kind of crane cable speed-limiting device, it is special
Sign is that this speed-limiting device includes pulley body, and a mounting hole, the mounting hole interpolation are offered in the middle part of the pulley body
Equipped with a support shaft；The inner wall of the hole installing is respectively arranged with a spring bearing, the branch close to two openings of mounting hole
It is connected by spring bearing between support axis and pulley body, support shaft is located at one section of referred to as braking between two spring bearings
Section, it is evenly arranged with several sliding slots corresponding with the outer wall of retaining segment on the inner wall of the mounting hole, is slided in the sliding slot
It is connected with the brake(-holder) block with gap between the outer wall of retaining segment, the brake(-holder) block and one can drive brake(-holder) block in pulley
The driving mechanism slided to the outer wall direction of retaining segment when ontology rotates.
By two bearing bearings, by for the one of the support shaft of braking section, i.e., retaining segment is isolated, and prevents dust etc.
Sundries interferes and influences braking ability.
In a kind of above-mentioned crane cable speed-limiting device, the driving mechanism includes a valve communicated with sliding slot
Hole, the interior valve body with a bar shape of the valve opening, the valve body is interior to have a valve chamber, and a valve is slidably connected in the valve chamber
Valve chamber is divided into the exocoel on the outside of valve block and the inner cavity on the inside of valve block, is slided in the valve opening by block, the valve block
It is connected with the piston of an annular, is connected by the connecting plate of an annular between the piston and brake(-holder) block, on the outside of the piston
The via hole of several connection exocoels and valve opening is offered on valve body；It is filled in the valve opening of the piston outer end and in valve chamber
Hydraulic oil.
Pulley rotates, and valve block is slided in valve chamber to the direction far from support shaft under the action of the centrifugal force, to squeezing valve
Valve chamber and valve opening is connected in the hydraulic oil of intracavitary, via hole, and piston, which is pressurized, drives brake(-holder) block close to the outer wall direction of retaining segment, gear
Turbine RPM reaches setting value, when the hydraulic fluid pressure in valve opening being caused to be enough that brake(-holder) block is driven to contact with brake axle, brake(-holder) block
Speed limit is carried out to pulley body, so completes the limitation for being rotated up to speed to pulley body.
Piston and connecting plate are cyclic structure, have preferable intensity and support stationarity, in braking process, brake(-holder) block
Impact direction is vertical with the stretching direction of connecting plate, and connecting plate can resist the torque of vertical direction and indeformable.
Driving mechanism can also be to push brake(-holder) block to the close cylinder of retaining segment.
In a kind of above-mentioned crane cable speed-limiting device, cable limit is offered on the peripheral surface of the pulley body
Slot.
In a kind of above-mentioned crane cable speed-limiting device, a pressure regulation is offered on the inner wall of the cable limiting slot
Hole, the regulator hole are threaded with the regulator bolts stretched into valve chamber.
It, can be with the pressure of the hydraulic oil of control valve intracavitary, 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.
In a kind of above-mentioned crane cable speed-limiting device, connect between the inner end of the regulator bolts and the outer end of valve block
It is connected to a resetting spring.
Resetting spring is in tensional state, valve block can be pushed inwardly to reset, and makes valve block by centrifugation force effect while needing
Resist resetting spring pressure, keep speed limit more accurate, also make by regulator bolts carry out speed limit adjusting sensitivity and can
By spending higher.
The pressure of the hydraulic oil and reset force of spring is dual is resetted to valve block realizes the same of brake force and pulley speed
Step.
In a kind of above-mentioned crane cable speed-limiting device, several connection inner cavities and exocoel are offered in the valve block
Spout hole.
In a kind of above-mentioned crane cable speed-limiting device, on the vibrating reed on the one side of retaining segment outer wall
With wearing layer.
In a kind of above-mentioned crane cable speed-limiting device, several are offered on the outer wall of the retaining segment along axis
The dust storage groove of directional spreding.
Section hydraulic oil is penetrated on brake(-holder) block, is made between brake(-holder) block and retaining segment by the gap between piston and valve body
Friction coefficient becomes smaller, and by the setting of dust storage groove, can squeeze into the section hydraulic oil in dust storage groove, is also formed brake(-holder) block
Bits end is stored in dust storage groove, keeps retaining segment wall surface smooth clean.
In a kind of above-mentioned crane cable speed-limiting device, several be located on the outside of piston is provided in the pulley body
Ventilation hole.
Description of the drawings
Fig. 1 is the overall structure diagram of this speed-limiting device.
Fig. 2 is the sectional view on the directions A in Fig. 1.
In figure, 11, pulley body；12, mounting hole；13, ventilation hole；2, support shaft；21, retaining segment；22, dust storage groove；
23, cable limiting slot；24, regulator hole；3, spring bearing；41, sliding slot；42, brake(-holder) block；43, wearing layer；51, valve opening；52, valve
Body；53, valve chamber；54, valve block；55, exocoel；56, inner cavity；57, piston；58, connecting plate；59, via hole；61, regulator bolts；
62, resetting spring；63, spout hole.
Specific implementation mode
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
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
One section between 3 is referred to as retaining segment 21, and the outer wall pair of several and retaining segment 21 is evenly arranged on the inner wall of mounting hole 12
The sliding slot 41 answered slidably connects the brake(-holder) block 42 with gap, brake(-holder) block 42 between the outer wall of retaining segment 21 in sliding slot 41
The driving mechanism that brake(-holder) block 11 is slided when pulley body 11 is rotated to the outer wall direction of retaining segment 21 can be driven with one.
By two bearing bearings, by one section for the support shaft 2 of braking, i.e. retaining segment 21 is isolated, and ash is prevented
The sundries such as dirt interfere and influence braking ability.
Driving mechanism includes a valve opening communicated with sliding slot 41 51, has the valve body 52 of a bar shape, valve in valve opening 51
There is a valve chamber 53 in body 52, 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 inner cavity 56 positioned at the inside of valve block 54 slidably connect the piston 57 of an annular, piston 57 in valve opening 51
It is connected by the connecting plate 58 of an annular between brake(-holder) block 42, several connections is offered on the valve body 52 in 57 outside of piston
The via hole 59 of exocoel 55 and valve opening 51；It is filled with hydraulic oil in the valve opening 51 of 57 outer end of piston and in valve chamber 53；Pulley revolves
Turn, valve block 54 is slided in valve chamber 53 to the direction far from support shaft 2 under the action of the centrifugal force, to squeeze the liquid in valve chamber 53
Valve chamber 53 and valve opening 51 is connected in pressure oil, via hole 59, and piston 57, which is pressurized, drives outer wall direction of the brake(-holder) block 42 to retaining segment 21
Close, gear turbine RPM reaches setting value, and the hydraulic fluid pressure in valve opening 51 is caused to be enough that brake(-holder) block 42 is driven to connect with brake axle
When touching, brake(-holder) block 42 carries out speed limit to pulley body 11, 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 be to 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；One is offered on the inner wall of cable limiting slot 23
Regulator hole 24, regulator hole 24 are threaded with the regulator bolts 61 stretched into valve chamber 53；Outwardly or inwardly by adjusting bolt
Precession or back-out can control the pressure of the hydraulic oil in valve chamber 53, to the maximum speed limit of adjustable pulley, in valve chamber 53
Cleaning in the replacement and valve chamber 53 of hydraulic oil can also be realized by regulator hole 24.
It is connected with a resetting spring 62 between the inner end and the outer end of valve block 54 of regulator bolts 61；Resetting spring 62 is in
Tensional state can push valve block 54 inwardly to reset, and make valve block 54 by centrifugation force effect while needing to resist resetting spring 62
Pressure, keeps speed limit more accurate, also makes sensitivity and reliability higher that speed limit adjusting is carried out by regulator bolts 61；Hydraulic pressure
The reset force of oily pressure and spring is dual to reset valve block 54, realizes that brake force is synchronous with pulley speed.
The spout hole 63 of several connection inner cavities 56 and exocoel 55 is offered in 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
Gap between piston 57 and valve body 52 is penetrated on brake(-holder) block 42, and friction coefficient between brake(-holder) block 42 and retaining segment 21 is made to become
It is small, by the setting of dust storage groove 22, which can be squeezed into dust storage groove 22, the bits for also being formed brake(-holder) block 42
End is stored in dust storage groove 22, keeps 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
Realization is closed, can also be to be realized separately through resetting spring.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (9)
1. a kind of crane cable speed-limiting device, which is characterized in that this speed-limiting device includes pulley body (11), the pulley sheet
A mounting hole (12) is offered in the middle part of body (11), and a support shaft (2) is inserted in the mounting hole (12)；The mounting hole
(12) inner wall is respectively arranged with a spring bearing (3), the support shaft (2) and pulley close to two openings of mounting hole (12)
It is connected by spring bearing (3) between ontology (11), be located between two spring bearings (3) one section of support shaft (2) is referred to as
Retaining segment (21) is evenly arranged with several sliding slots corresponding with the outer wall of retaining segment (21) on the inner wall of the mounting hole (12)
(41), the brake(-holder) block (42) with gap between the outer wall of retaining segment (21) is slidably connected in the sliding slot (41), it is described
Brake(-holder) block (42) can drive brake(-holder) block (42) when pulley body (11) are rotated to the outer wall direction of retaining segment (21) with one
The driving mechanism of sliding.
2. a kind of crane cable speed-limiting device according to claim 1, which is characterized in that the driving mechanism includes one
The valve opening (51) communicated with sliding slot (41), the interior valve body (52) with a bar shape of the valve opening (51), the valve body (52) are interior
With a valve chamber (53), a valve block (54) is slidably connected in the valve chamber (53), the valve block (54) separates valve chamber (53)
Exocoel (55) to be located on the outside of valve block (54) and the inner cavity (56) on the inside of valve block (54), the interior sliding of the valve opening (51) connect
It is connected to the piston (57) of an annular, is connected by the connecting plate (58) of an annular between the piston (57) and brake(-holder) block (42),
The via hole (59) of several connection exocoel (55) and valve opening (51) is offered on valve body (52) on the outside of the piston (57)；Institute
It states in the valve opening (51) of piston (57) outer end and is filled with hydraulic oil in valve chamber (53).
3. a kind of crane cable speed-limiting device according to claim 1 or claim 2, which is characterized in that the pulley body (11)
Peripheral surface on offer cable limiting slot (23).
4. a kind of crane cable speed-limiting device according to claim 3, which is characterized in that the cable limiting slot (23)
A regulator hole (24) is offered on inner wall, the regulator hole (24) is threaded with the regulator bolts stretched into valve chamber (53)
(61)。
5. a kind of crane cable speed-limiting device according to claim 4, which is characterized in that the regulator bolts (61) it is interior
It is connected with a resetting spring (62) between end and the outer end of valve block (54).
6. a kind of crane cable speed-limiting device according to claim 5, which is characterized in that offered on the valve block (54)
The spout hole (63) of several connection inner cavity (56) and exocoel (55).
7. a kind of crane cable speed-limiting device according to claim 6, which is characterized in that close on the brake(-holder) block (42)
There is wearing layer (43) on the one side of retaining segment (21) outer wall.
8. a kind of crane cable speed-limiting device according to claim 7, which is characterized in that the outer wall of the retaining segment (21)
On offer several dust storage grooves being distributed in the axial direction (22).
9. a kind of crane cable speed-limiting device according to claim 8, which is characterized in that set on the pulley body (11)
It is equipped with several ventilation holes (13) on the outside of piston (57).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721679755.4U CN207699096U (en) | 2017-12-04 | 2017-12-04 | A kind of crane cable speed-limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721679755.4U CN207699096U (en) | 2017-12-04 | 2017-12-04 | A kind of crane cable speed-limiting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207699096U true CN207699096U (en) | 2018-08-07 |
Family
ID=63025323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721679755.4U Expired - Fee Related CN207699096U (en) | 2017-12-04 | 2017-12-04 | A kind of crane cable speed-limiting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207699096U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107758553A (en) * | 2017-12-04 | 2018-03-06 | 湖北科技学院 | A kind of crane cable speed-limiting device |
-
2017
- 2017-12-04 CN CN201721679755.4U patent/CN207699096U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107758553A (en) * | 2017-12-04 | 2018-03-06 | 湖北科技学院 | A kind of crane cable speed-limiting device |
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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: 20180807 Termination date: 20201204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |