CN208361771U - A kind of crane overspeed protective device - Google Patents
A kind of crane overspeed protective device Download PDFInfo
- Publication number
- CN208361771U CN208361771U CN201820704529.5U CN201820704529U CN208361771U CN 208361771 U CN208361771 U CN 208361771U CN 201820704529 U CN201820704529 U CN 201820704529U CN 208361771 U CN208361771 U CN 208361771U
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- China
- Prior art keywords
- shield
- speed
- reel
- reduction
- plate
- 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.)
- Expired - Fee Related
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- 230000001681 protective effect Effects 0.000 title claims abstract description 17
- 239000000523 sample Substances 0.000 claims abstract description 17
- 235000005121 Sorbus torminalis Nutrition 0.000 claims description 5
- 244000152100 Sorbus torminalis Species 0.000 claims description 5
- 210000003781 tooth socket Anatomy 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Jib Cranes (AREA)
Abstract
The utility model discloses a kind of crane overspeed protective devices, including reel, the outside of the reel is equipped with the first shield, the both ends center of reel is equipped with support shaft, reel is rotationally connected with the inside of the first shield by the support shaft at both ends, one end of reel is equipped with speed probe, first shield is equipped with the second shield on the outside of one end of speed probe, first shield is vertically connected with fixed link close to one end of the second shield, and fixed link is equipped with the first deceleration device far from one end of the first shield, first deceleration device is equipped with the second deceleration device far from the side of the first shield.The utility model structure is simple, and rationally, using speed probe when drum speed exceeds the speed limit, intelligent starts the first deceleration device and the second deceleration device in time to reduce the revolving speed of reel, avoids unexpectedly generating for design, guarantees operator and slings the safety of article.
Description
Technical field
The utility model relates to overspeed protective device field more particularly to a kind of crane overspeed protective devices.
Background technique
Crane refers to more movement hoisting machineries of vertical-lift in a certain range and horizontal carrying heavy goods.Also known as day
Vehicle, hanging, crane.
The lifting mechanism of crane in use, is usually set in the shaft end of raising motor or raising speed reducer
Brake apparatus is set, when lifting mechanism works normally, brake apparatus control lifting mechanism can be used and stop, but work as and carry
When lotus hypervelocity decline, the drum speed of lifting mechanism is risen rapidly, and the brake apparatus cannot be quickly and effectively by reel at this time
Speed lowers, and the weight that will lead to reel underhung declines rapidly, and it is rapid to will lead to the weight that reel is lifted by crane when serious
Landing, and by hard impacts, or even security threat can be caused to operator, it is super to have devised a kind of crane for we thus
Fast protective device solves problem above.
Utility model content
Purpose of the utility model is to solve disadvantages existing in the prior art, and a kind of crane hypervelocity proposed
Protective device.
To achieve the goals above, the utility model adopts the technical scheme that
A kind of crane overspeed protective device, including reel, the outside of the reel are equipped with the first shield, and the two of reel
End center is equipped with support shaft, and reel is rotationally connected with the inside of the first shield by the support shaft at both ends, reel
One end is equipped with speed probe, and the first shield is equipped with the second shield on the outside of one end of speed probe, and first is anti-
Shield is vertically connected with fixed link close to one end of the second shield, and fixed link is equipped with first far from one end of the first shield
Deceleration device, first deceleration device are equipped with the second deceleration device far from the side of the first shield.
Preferably, first deceleration device includes gear, vertical tube, threaded rod and the first reduction of speed plate, gear and fixed link
One end far from the first shield is rotatedly connected, and the upper vertical of gear is equipped with vertical tube, is connected through a screw thread on the inside of vertical tube
There is threaded rod, threaded rod is rotatably connected to the first reduction of speed plate of arc far from one end of vertical tube.
Preferably, second deceleration device includes that the second reduction of speed plate, linear motor and driver plate, linear motor are mounted on
On first shield, and linear motor is located at support side of the shaft far from fixed link, the output end of linear motor and the second drop
One end of fast plate is vertically connected, and the second reduction of speed plate is vertically equipped with driver plate far from one end of linear motor.
Preferably, the driver plate is connected far from one end of the second reduction of speed plate with gear engagement rotation, and sets on driver plate
There is the tooth socket matched with gear.
Preferably, the output end of the speed probe and the controller of linear motor are electrical connected.
Preferably, the side of the first reduction of speed plate and the close support shaft of the second reduction of speed plate is equipped with anti-skid chequer.
Compared with prior art, the utility model has the beneficial effects that
When the revolving speed of reel is more than normal range (NR), speed probe sends a signal to linear motor, linear motor it is defeated
Outlet retracts, and the second reduction of speed plate is pulled to support shaft, drive rod is with tooth when the movement of the second reduction of speed plate passes through tooth socket at this time
Wheel rotation, gear are rotated with vertical tube, and threaded rod can rotate rising with the rotation of vertical tube, until the first reduction of speed plate and support
Shaft is close to, and the anti-skid chequer on the first reduction of speed plate and the second reduction of speed plate can increase and support the frictional force of shaft, is gradually leaning on
Frictional force is gradually increased during nearly support shaft, makes that the revolving speed of shaft and reel is supported to reduce, the present apparatus is passed using revolving speed
For sensor when drum speed exceeds the speed limit, intelligent starts the first deceleration device and the second deceleration device in time to reduce turning for reel
Speed can avoid unexpected generation, guarantees operator and slings the safety of article.
Detailed description of the invention
Fig. 1 be the utility model proposes a kind of crane overspeed protective device structural schematic diagram；
Fig. 2 be the utility model proposes a kind of crane overspeed protective device the first deceleration device and the second reduction of speed dress
The positional diagram set.
In figure: 1 reel, 2 first shields, 3 support shafts, 4 speed probes, 5 second shields, 6 fixed links, 7 the
One deceleration device, 71 gears, 72 vertical tubes, 73 threaded rods, 74 first reduction of speed plates, 8 second deceleration devices, 81 second reduction of speed plates, 82
Linear motor, 83 driver plates.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
Referring to Fig.1-2, the outside of a kind of crane overspeed protective device, including reel 1, reel 1 is equipped with the first shield
2, the both ends center of reel 1 is equipped with support shaft 3, and reel 1 is rotationally connected with the first protection by the support shaft 3 at both ends
The inside of cover 2, one end of reel 1 are equipped with speed probe 4, and the first shield 2 is set on the outside of one end of speed probe 4
There is the second shield 5, the first shield 2 is vertically connected with fixed link 6 close to one end of the second shield 5, and fixed link 6 is separate
One end of first shield 2 is equipped with the first deceleration device 7, and a deceleration device 7 includes gear 71, vertical tube 72, threaded rod 73 and the
One reduction of speed plate 74, gear 71 are rotatedly connected with fixed link 6 far from one end of the first shield 2, the upper vertical peace of gear 71
Equipped with vertical tube 72, the inside of vertical tube 72 has been connected through a screw thread threaded rod 73, and threaded rod 73 is rotated far from one end of vertical tube 72 to be connected
It is connected to the first reduction of speed plate 74 of arc, the first deceleration device 7 is equipped with the second deceleration device 8 far from the side of the first shield 2, the
Two deceleration devices 8 include the second reduction of speed plate 81, linear motor 82 and driver plate 83, and linear motor 82 is mounted on the first shield 2
On, and linear motor 82 is located at support side of the shaft 3 far from fixed link 6, the output end and linear motor 82 of speed probe 4
Controller be electrical connected, the output end of linear motor 82 and one end of the second reduction of speed plate 81 are vertically connected, the first reduction of speed plate 74
Be equipped with anti-skid chequer close to the side of support shaft 3 with the second reduction of speed plate 81, the second reduction of speed plate 81 far from linear motor 82 one
End is vertically equipped with driver plate 83, and the one end of driver plate 83 far from the second reduction of speed plate 81 is connected with 71 engagement rotation of gear, and is driven
Plate 83 is equipped with the tooth socket matched with gear 71.
Working principle: the revolving speed of reel 1 in the normal range when, the first deceleration device 7 and the second deceleration device 8 are motionless
Make, the first reduction of speed plate 74 and the second reduction of speed plate 81 do not contact with support shaft 3 at this time, when the revolving speed of reel 1 is more than normal model
When enclosing, speed probe 4 sends a signal to linear motor 82, and the output end of linear motor 82 retracts, the second reduction of speed plate 81 is drawn
To support shaft 3, at this time drive rod 83 with when the movement of the second reduction of speed plate 81 passes through tooth socket gear 71 rotate, gear 71 with
Vertical tube 72 rotates, and since the first reduction of speed plate 74 is arc panel 74, can be supported shaft 3 in the course of rotation and stop, therefore screw thread
Bar 73 can rotate rising with the rotation of vertical tube 72, until the first reduction of speed plate 74 is close to support shaft 3, the first reduction of speed plate 74
It can increase and support the frictional force of shaft 3 with the anti-skid chequer on the second reduction of speed plate 81, in the support shaft process moved closer to
Middle frictional force is gradually increased, and makes that the revolving speed of shaft 3 and reel 1 is supported to reduce, after revolving speed is normal, speed probe 4 sends signal
To linear motor 82, keep its output end overhanging, the first deceleration device 7 and the second deceleration device 8 return back to original position, present apparatus knot
Structure is simple, design rationally, using speed probe when drum speed exceeds the speed limit, intelligent the first deceleration device of timely starting and the
Two deceleration devices reduce the revolving speed of reel, avoid unexpectedly generating, guarantee operator and sling the safety of article.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (6)
1. a kind of crane overspeed protective device, including reel (1), which is characterized in that the outside of the reel (1) is equipped with first
Shield (2), the both ends center of reel (1) are equipped with support shaft (3), and reel (1) is rotated by the support shaft (3) at both ends
It is connected to the inside of the first shield (2), one end of reel (1) is equipped with speed probe (4), and the first shield (2) is close
The second shield (5) are equipped on the outside of one end of speed probe (4), the one end of the first shield (2) close to the second shield (5)
It is vertically connected with fixed link (6), and fixed link (6) is equipped with the first deceleration device (7) far from the one end of the first shield (2), institute
It states the first deceleration device (7) and is equipped with the second deceleration device (8) far from the side of the first shield (2).
2. a kind of crane overspeed protective device according to claim 1, which is characterized in that first deceleration device
It (7) include gear (71), vertical tube (72), threaded rod (73) and the first reduction of speed plate (74), gear (71) and fixed link (6) are far from the
One end of one shield (2) is rotatedly connected, and the upper vertical of gear (71) is equipped with vertical tube (72), and vertical tube passes through on the inside of (72)
It is threaded with threaded rod (73), threaded rod (73) is rotatably connected to the first reduction of speed plate of arc far from the one end of vertical tube (72)
(74)。
3. a kind of crane overspeed protective device according to claim 1, which is characterized in that second deceleration device
It (8) include the second reduction of speed plate (81), linear motor (82) and driver plate (83), linear motor (82) is mounted on the first shield
(2) on, and linear motor (82) be located at support shaft (3) far from fixed link (6) side, the output end of linear motor (82) with
One end of second reduction of speed plate (81) is vertically connected, and the second reduction of speed plate (81) is vertically equipped with transmission far from the one end of linear motor (82)
Plate (83).
4. a kind of crane overspeed protective device according to claim 3, which is characterized in that the driver plate (83) is separate
One end of second reduction of speed plate (81) is connected with gear (71) engagement rotation, and driver plate (83) is equipped with and matches with gear (71)
Tooth socket.
5. a kind of crane overspeed protective device according to claim 1, which is characterized in that the speed probe (4)
The controller of output end and linear motor (82) be electrical connected.
6. a kind of crane overspeed protective device according to claim 2, which is characterized in that the first reduction of speed plate (74)
Anti-skid chequer is equipped with close to the side of support shaft (3) with the second reduction of speed plate (81).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820704529.5U CN208361771U (en) | 2018-05-13 | 2018-05-13 | A kind of crane overspeed protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820704529.5U CN208361771U (en) | 2018-05-13 | 2018-05-13 | A kind of crane overspeed protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208361771U true CN208361771U (en) | 2019-01-11 |
Family
ID=64934802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820704529.5U Expired - Fee Related CN208361771U (en) | 2018-05-13 | 2018-05-13 | A kind of crane overspeed protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208361771U (en) |
-
2018
- 2018-05-13 CN CN201820704529.5U patent/CN208361771U/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: 20190111 |