CN204237389U - A kind of anti-falling safety device of gear teeth bar overload protection - Google Patents
A kind of anti-falling safety device of gear teeth bar overload protection Download PDFInfo
- Publication number
- CN204237389U CN204237389U CN201420701688.1U CN201420701688U CN204237389U CN 204237389 U CN204237389 U CN 204237389U CN 201420701688 U CN201420701688 U CN 201420701688U CN 204237389 U CN204237389 U CN 204237389U
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- China
- Prior art keywords
- tooth bar
- bolster
- safety device
- miniature gears
- falling safety
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Abstract
A kind of anti-falling safety device of gear teeth bar overload protection.Solving hanging basket meets accident when falling, the problem that the wheel and rack of anti-falling safety device damages because of overload.The first elastic element is provided with between bolster and tooth bar; The second elastic element is provided with between miniature gears and back plate.When bolster not yet arrive chute lower end and pinch wheels just clamping guide-rail time, owing to being that elasticity is connected between bolster with tooth bar, bolster continues to be displaced downwardly to chute lower end, avoids load to directly act on tooth bar by bolster to cause tooth bar to transship; When bolster arrived chute lower end and pinch wheels not yet completely clamping guide-rail time, pinch wheels and guide rail relative motion maintenance rotate, owing to being that elasticity is connected between miniature gears with back plate, miniature gears will overcome elastic force and scroll up along tooth bar, until the complete clamping guide-rail face of pinch wheels, avoid miniature gears and big gear wheel stuck, ensure gear by overload destroy.
Description
Technical field
The utility model relates to a kind of anti-falling safety device, is specifically related to a kind of anti-falling safety device of gear teeth bar overload protection.
Background technology
Use in the construction such as construction trade by the building hoist of rope traction transmission, carry main vertical transport work in engineering, because each lifting weight is large and use frequent, add camp site rugged environment, easily occur the disconnected safety problem of falling of restricting.
To fall problem to separate resolution rope, the generation of falling accident is generally prevented by installing anti-falling safety device, Chinese patent (Authorization Notice No. CN203419655U) discloses a kind of eccentric wheel-type instantaneous formula lift installation anti-falling safety device being applicable to U-bar guide rail, when occurring that disconnected rope falls, bolster band carry-over bar moves, and rack drives transmission gear rotates, transmission gear drives spragging gear to rotate, eccentric braking gear wheel and spragging gear synchronous axial system, thus stuck guide rail, realize safe anti-falling.
But the anti-falling safety device of this structure, when anti-fall braking maneuver, the gravity load of its hanging basket generally all can act directly on tooth bar and transmission gear, is very easy to cause tooth bar and transmission gear transship because bearing and damage.
Utility model content
In order to overcome the deficiency of background technology, the utility model provides a kind of anti-falling safety device of gear teeth bar overload protection, solves hanging basket and meets accident when falling, the problem that the wheel and rack of anti-falling safety device damages because of overload.
The technical scheme that the utility model adopts: a kind of anti-falling safety device of gear teeth bar overload protection, comprises back plate, pinch wheels, big gear wheel, miniature gears, tooth bar, bolster; Be provided with chute in the middle part of described back plate, described bolster through chute, and can move up and down along chute; Two described pinch wheels are arranged on the side of back plate, and are arranged symmetrically in chute both sides; Big gear wheel and pinch wheels are connected, described bolster be provided with first elastic element that can promote the relative tooth bar of bolster and move up between tooth bar, described bolster is connected with tooth bar elasticity, and tooth bar engages with miniature gears; Be provided with between miniature gears and back plate and can promote second elastic element of miniature gears to the movement of big gear wheel direction, described miniature gears engages with big gear wheel elastic floating.
Be provided with tooth bar pressure spring slot in the middle part of described tooth bar, described first elastic element is tooth bar stage clip and is arranged in tooth bar pressure spring slot, and described tooth bar stage clip one end and tooth bar pressure spring slot offset, and the other end and bolster offset.
The corresponding pinion positions of described back plate is provided with gear pressure spring slot, and described second elastic element is gear stage clip and is arranged in gear pressure spring slot, and the S. A. of described miniature gears to insert in gear pressure spring slot and offsets with gear stage clip.
Described miniature gears is positioned at the top position of big gear wheel.
The overall center of gravity of described pinch wheels is positioned at rotating shaft center, is the microscler block structure of symmetry, and wherein one end is protruded and is provided with ratchet.
Described pinch wheels and big gear wheel are split-type structural, and one of them end face of described pinch wheels is provided with groove, and one of them end face of described big gear wheel is provided with the fin with groove adaptation.
Described tooth bar adopts stacked steel plate to rivet or welds or the combination forming that is threaded.
The two ends up and down of described back plate chute are provided with guiding boots, described guiding boots are embedded with the wear-resistant plastic lining in U-shaped, can slippage on T-shaped guide rail.
Be provided with supporting sleeve outside described bolster, described supporting sleeve is provided with Connection Block.
Described bolster is also provided with elasticity flip flop equipment.
The beneficial effects of the utility model are: when bolster not yet arrive chute lower end and pinch wheels just clamping guide-rail time, because bolster is connected with the elasticity of rack member, bolster can continue to be displaced downwardly to chute lower end, avoids load to directly act on tooth bar by bolster and causes tooth bar to transship; When bolster arrived chute lower end and pinch wheels not yet completely clamping guide-rail time, now pinch wheels and guide rail Relative sliding are rotated further, owing to being that elasticity is connected between miniature gears with back plate, engaged miniature gears will overcome elastic force and scroll up along tooth bar, until the complete clamping guide-rail face of pinch wheels, avoid miniature gears and big gear wheel stuck, ensure gear by overload destroy.Thus; the transmission device be made up of tooth bar, miniature gears and big gear wheel only bears limited driven load in the overall process of anti-falling safety device work; hanging basket gravity loading directly or indirectly can not act on drive mechanism; thus make rack-and-gear obtain actv. protection, ensure that the reliability service of anti-falling safety device.
Accompanying drawing explanation
Fig. 1 is that the utility model embodiment faces structural representation.
Fig. 2 is the left TV structure schematic diagram of the utility model embodiment.
Fig. 3 is the utility model embodiment plan structure schematic diagram.
Fig. 4 is the structural representation of the utility model embodiment pinch wheels.
Fig. 5 is the structural representation of the utility model embodiment big gear wheel.
Fig. 6 is the structural representation of the utility model embodiment guiding boots.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model embodiment is described further:
As Figure 1-3, a kind of anti-falling safety device with gear overload protection, comprises back plate 6, pinch wheels 1, big gear wheel 2, miniature gears 3, tooth bar 4, bolster 5, supporting sleeve 11, Connection Block 12, elasticity flip flop equipment 13, guiding boots 9; Be provided with chute 61 in the middle part of described back plate 6, described bolster 5 through chute 61, and can move up and down along chute 61; Described guiding boots are U-shaped, are arranged on the two ends up and down of back plate chute 61, and two described pinch wheels 1 are arranged on the side of back plate 6, and are arranged symmetrically in chute 61 both sides; Big gear wheel 2 and pinch wheels 1 are connected, and described miniature gears 3 engages with big gear wheel 1, and tooth bar 4 engages with miniature gears 3, and described bolster 5 is connected with tooth bar 4; Described supporting sleeve 11 is fixedly connected with by bearing pin with Connection Block 12, and described supporting sleeve 11 is enclosed within outside bolster 5; Described elasticity flip flop equipment 13 is fixed on back plate 6, and is connected with bolster 5;
Shown in anti-falling safety device can free slippage on T-shaped guide rail 10 by guiding boots 9, when falling, anti-falling safety device is in instantaneous state of weightlessness, the spring of elasticity flip flop equipment 13 promotes bolster 5 and moves down rapidly along chute, thus band carry-over bar 4 moves down, and tooth bar 4 drives miniature gears 3 to rotate, miniature gears 3 drives big gear wheel 2 to rotate, pinch wheels 1 and big gear wheel 2 synchronous axial system, finally clamp guide rail, realize anti-fall object.
Tooth bar pressure spring slot 41 is provided with in the middle part of described tooth bar 4, in described tooth bar pressure spring slot 41, tooth bar stage clip 7 is set, described tooth bar stage clip 7 one end and bolster 5 offset, to bolster 5 one elastic force upwards, when bolster not yet arrive chute lower end and pinch wheels just clamping guide-rail time, the elastic force that bolster can overcome tooth bar stage clip continues to move down along tooth bar pressure spring slot, until chute lower end, avoids load to directly act on tooth bar by bolster and causes tooth bar to transship.
Described back plate 6 corresponding miniature gears 3 position is provided with gear pressure spring slot 62, gear stage clip 8 is provided with in described gear pressure spring slot 62, the S. A. of miniature gears 3 to insert in gear pressure spring slot 62 and offsets with gear stage clip 8, to miniature gears elastic force towards big gear wheel 2, when bolster arrived chute lower end and pinch wheels not yet completely clamping guide-rail time, now pinch wheels and guide rail Relative sliding are rotated further, big gear wheel 2 synchronous axial system, and engaged miniature gears 3 will overcome elastic force along tooth bar 4 and scroll up, until pinch wheels 1 clamping guide-rail face completely, avoid miniature gears 3 and big gear wheel 2 stuck, ensure that gear does not destroy by overload.
Described miniature gears 3 is positioned at the top position of big gear wheel 2, and gear stage clip 8 is arranged on miniature gears top position, and layout is more reasonable, and during brake off, miniature gears can reset under the combined action of the elastic force of self gravitation and gear stage clip 8, better effects if.
As shown in Figure 4, described pinch wheels 1 is the microscler block structure of near symmetrical, its center-of-gravity position is pivot center, ensure that pinch wheels 1 is in state of equilibrium all the time in rotation process, the interference of maximum minimizing anti-drop system trigger action, and one of them protrusion of pinch wheels 1 is provided with ratchet, stuck guide rail that can be more stable.
Shown can be integrative-structure between pinch wheels 1 and big gear wheel 2, also can be Split type structure, as shown in Figures 4 and 5, described pinch wheels 1 adopts split-type structural with big gear wheel 2, described one of them end face of pinch wheels 1 is provided with groove 14, and described one of them end face of big gear wheel 2 is provided with the fin 15 with groove 14 adaptation, and not only structure is simple, and easy to process, guarantee quality.
Described tooth bar 4 adopts stacked steel plate combination to rivet or welding fabrication, further can improve the accuracy of manufacture of part.
Embodiment is only preferred implementation of the present utility model, should not be considered as the restriction to utility model, any improvement done based on spirit of the present utility model, all should within protection domain of the present utility model.
Claims (10)
1. an anti-falling safety device for gear teeth bar overload protection, comprises back plate (6), pinch wheels (1), big gear wheel (2), miniature gears (3), tooth bar (4), bolster (5); Described back plate (6) middle part is provided with chute (61), and described bolster (5) through chute (61), and can move up and down along chute (61); Two described pinch wheels (1) are arranged on the side of back plate (6), and are arranged symmetrically in chute (61) both sides; Big gear wheel (2) and pinch wheels (1) are connected;
It is characterized in that: between described bolster (5) with tooth bar (4), be provided with first elastic element that can promote bolster (5) relative tooth bar (4) and move up, described bolster (5) is connected with tooth bar (4) elasticity, and tooth bar (4) engages with miniature gears (3); Be provided with between miniature gears (3) and back plate and can promote second elastic element of miniature gears (3) to big gear wheel (2) direction movement, described miniature gears (3) engages with big gear wheel (1) elastic floating.
2. the anti-falling safety device of gear teeth bar overload protection according to claim 1; it is characterized in that: described tooth bar (4) middle part is provided with tooth bar pressure spring slot (41); described first elastic element is tooth bar stage clip (7) and is arranged in tooth bar pressure spring slot (41); described tooth bar stage clip (7) one end and tooth bar pressure spring slot (41) offset, and the other end and bolster (5) offset.
3. the anti-falling safety device of gear teeth bar overload protection according to claim 1; it is characterized in that: described back plate (6) corresponding miniature gears (3) position is provided with gear pressure spring slot (62); described second elastic element is gear stage clip (8) and is arranged in gear pressure spring slot (62), and the S. A. of described miniature gears (3) to insert in gear pressure spring slot (62) and offsets with gear stage clip (8).
4. the anti-falling safety device of gear teeth bar overload protection according to claim 1, is characterized in that: described miniature gears (3) is positioned at the top position of big gear wheel (2).
5. the anti-falling safety device of gear teeth bar overload protection according to claim 1, is characterized in that: described pinch wheels (1) overall center of gravity is positioned at rotating shaft center, is the microscler block structure of symmetry, and wherein one end is protruded and is provided with ratchet.
6. the anti-falling safety device of gear teeth bar overload protection according to claim 1; it is characterized in that: described pinch wheels (1) and big gear wheel (2) are split-type structural; described pinch wheels (1) one of them end face is provided with groove (14), and described big gear wheel (2) one of them end face is provided with the fin (15) adaptive with groove (14).
7. the anti-falling safety device of gear teeth bar overload protection according to claim 1, is characterized in that: described tooth bar (4) adopts stacked steel plate combination welding fabrication.
8. the anti-falling safety device of gear teeth bar overload protection according to claim 1; it is characterized in that: the two ends up and down of described back plate chute (61) are provided with guiding boots (9); described guiding boots (9) are embedded with the wear-resistant plastic lining (91) in U-shaped, can in the upper slippage of T-shaped guide rail (10).
9. the anti-falling safety device of gear teeth bar overload protection according to claim 1, it is characterized in that: be provided with supporting sleeve (11) outside described bolster (5), described supporting sleeve (11) is provided with Connection Block (12).
10. the anti-falling safety device of gear teeth bar overload protection according to claim 1, is characterized in that: described bolster (5) is also provided with elasticity flip flop equipment (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420701688.1U CN204237389U (en) | 2014-11-21 | 2014-11-21 | A kind of anti-falling safety device of gear teeth bar overload protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420701688.1U CN204237389U (en) | 2014-11-21 | 2014-11-21 | A kind of anti-falling safety device of gear teeth bar overload protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204237389U true CN204237389U (en) | 2015-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420701688.1U Expired - Fee Related CN204237389U (en) | 2014-11-21 | 2014-11-21 | A kind of anti-falling safety device of gear teeth bar overload protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204237389U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104370177A (en) * | 2014-11-21 | 2015-02-25 | 王少腾 | Anti-falling safety device with pinion and rack overload protection |
| CN114852818A (en) * | 2022-04-15 | 2022-08-05 | 南通江中光电有限公司 | Elevator guide shoe with anti-falling function |
-
2014
- 2014-11-21 CN CN201420701688.1U patent/CN204237389U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104370177A (en) * | 2014-11-21 | 2015-02-25 | 王少腾 | Anti-falling safety device with pinion and rack overload protection |
| CN104370177B (en) * | 2014-11-21 | 2017-02-01 | 王少腾 | Anti-falling safety device with pinion and rack overload protection |
| CN114852818A (en) * | 2022-04-15 | 2022-08-05 | 南通江中光电有限公司 | Elevator guide shoe with anti-falling function |
| CN114852818B (en) * | 2022-04-15 | 2023-08-25 | 南通江中光电有限公司 | Elevator guide shoe with anti-falling function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20161121 |