CN204609269U - A kind of lifted scaffold falling proof device - Google Patents
A kind of lifted scaffold falling proof device Download PDFInfo
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- CN204609269U CN204609269U CN201520297825.4U CN201520297825U CN204609269U CN 204609269 U CN204609269 U CN 204609269U CN 201520297825 U CN201520297825 U CN 201520297825U CN 204609269 U CN204609269 U CN 204609269U
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- ratchet
- head
- keyway
- locking
- proof device
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Abstract
The utility model relates to a kind of lifted scaffold falling proof device, belongs to technical field of building construction.This device comprises the bearing with vertical gulde edge, the horizontal dead axle of seat supports kink spider gear, has the vertical keyway run through, the locking key forming with it moving sets is housed in keyway in the middle part of dead axle; It is recessed that the endoporus of spider gear has the interval ratchet be connected by endoporus segmental arc, and ratchet is recessed to be made up of decline locking end and curve transition; The upper end of locking key has the ratchet head that recessed locking end matches with ratchet, and the lower end of locking key has touches head; When the corresponding locking end position of ratchet head, touch the corresponding changeover portion position of head; Ratchet head and touch one of head when stretching out keyway, another retraction keyway.The utility model is ingenious utilizes gravity and weightless conversion when ratchet is fallen at the fast speed to play locking effect, even if also all-the-time stable is reliable for Long-Time Service.
Description
Technical field
The utility model relates to a kind of safety device, and especially a kind of lifted scaffold falling proof device, belongs to technical field of building construction.
Background technology
In order to ensure construction safety, in building operations, generally have employed falling proof device.Such as application number is 200980000197.6,201210105256.X, 201210267615.1 Chinese patent individually disclose several falling proof device.But these devices are not suitable for the fall arrest of lifted scaffold.
Retrieval finds, application number be 200810068257.5 Chinese patent disclose a kind of falling proof device, this device comprises guide bracket and is connected with guide rail sliding sleeve, guide rail is arranged spaced cross bar, on guide bracket install one can with the anti-fall locating wheel of cross bar engaged transmission, between anti-fall locating wheel wheel body and anti-fall locating wheel axle bed, arrangement of clutch is set.Scaffold is in slow lifting and decline process, support body tenesmus suddenly can cause anti-fall locating wheel to produce larger rotating backward speed, automatic trigger triggers arrangement of clutch work, make anti-fall locating wheel can not continue to rotate backward, anti-fall locating wheel blocks the cross bar at the interval that guide rail is arranged, and prevents scaffold from continuing to fall.Although this device is applicable to lifted scaffold, but the structure of freewheel clutch used for reference by its arrangement of clutch, usual needs arrange the elastic component of self-locking when ensureing ballistic motion, not only structure is comparatively complicated, and after Long-Time Service, due to the inefficacy of elastic component or the wearing and tearing of self-locking rubbing surface, be difficult to keep original anti-fall performance.
Summary of the invention
The purpose of this utility model is: for prior art Problems existing, proposes a kind of lifted scaffold falling proof device that can keep reliable anti-fall performance for a long time.
In order to achieve the above object, the basic technical scheme of the utility model lifted scaffold falling proof device is, comprise the bearing with vertical gulde edge, the horizontal dead axle of described seat supports kink spider gear, there is in the middle part of described dead axle the vertical keyway run through, the locking key forming with it moving sets is housed in described keyway; It is recessed that the endoporus of described spider gear has the interval ratchet be connected by endoporus segmental arc, and described ratchet is recessed to be made up of decline locking end and curve transition; The upper end of described locking key has the ratchet head that recessed locking end matches with ratchet, and the lower end of described locking key has touches head; When the corresponding locking end position of described ratchet head, described in touch the corresponding changeover portion position of head; Described ratchet head and touch one of head when stretching out keyway, another retraction keyway.
Like this, when the bearing of the utility model lifted scaffold falling proof device is fixed, and after the terraced bar between the anti-falling rods of lifted scaffold side is engaged with spider gear, when being slowly elevated lifted scaffold, locking key under gravity, fit spider gear endoporus profile all the time in lower end, therefore when the corresponding locking end position of ratchet head, owing to touching the corresponding changeover portion position of head, therefore ratchet head retraction keyway, can not affect the rotation of spider gear, lifted scaffold is able to freely be elevated as required.When being elevated lifted scaffold and landing suddenly, locking key will be in state of weightlessness, can not to be retracted because of the deadweight of locking key when spider gear goes to and touches the corresponding changeover portion of head keyway by the ratchet head that keyway is stretched out in jacking because touching head contact endoporus segmental arc, the locking end recessed with ratchet engages by result, play counteresteer effect in time, make spider gear block the terraced bar between anti-falling rods because being rotated further, make lifted scaffold stop declining, play anti-fall effect.
As can be seen here, the utility model is ingenious utilizes gravity and weightless conversion when ratchet is fallen at the fast speed to play locking effect.Even if therefore also all-the-time stable is reliable for anti-fall performance Long-Time Service.
Further, connected by rear fishplate bar, dust-proof water board joint between the biside plate of described bearing, between bottom two gripper shoe of described bearing, support the horizontal dead axle of kink spider gear.
Further again, described dust-proof water board joint is positioned at above spider gear, and has the opening that two ends form snap fit.Be connected through the hinge inside described dust-proof water board joint.
Further again, the two ends of described dead axle have dowel hole, and middle part has the vertical kidney-shaped keyway run through.
Further, described spider gear is made up of the two ends gear teeth by connecting cylinder disjunctor.
Also further, described locking key is in shaped door, and upper end has the ratchet head that recessed locking end matches with ratchet, and the crotched circular arc of lower end shape touches head.
Accompanying drawing explanation
Fig. 1 is the perspective view of the utility model embodiment.
Fig. 2 is the using state perspective view of Fig. 1 embodiment.
Fig. 3 is the plane structure schematic diagram of Fig. 2 embodiment.
Fig. 4 is the A-A sectional view of Fig. 3.
Fig. 5 is the top view of Fig. 3.
Fig. 6 is the B place partial enlarged drawing of Fig. 4.
Fig. 7 is the spider gear perspective view in Fig. 1.
Fig. 8 is dead axle in Fig. 1 and locking key perspective view.
Detailed description of the invention
Embodiment one
The lifted scaffold falling proof device of the present embodiment as shown in Figure 1, comprise the triangular support base 1 with vertical gulde edge, connected by rear fishplate bar 1-5, dust-proof water board joint 1-4 between this bearing 1 biside plate 1-1, between the bottom two gripper shoe 1-2 of bearing 1, support the horizontal dead axle 3 of kink spider gear 2.Dust-proof water board joint 1-4 is positioned at above spider gear 2, and has the opening 1-3 that two ends shown in Fig. 5 form snap fit, is connected through the hinge, therefore can folds inside it, is convenient to install.One of effect of dust-proof water board joint 1-4 is the rotating wheel mechanisms that can effectively prevent the dusts such as mortar from entering below, in order to avoid affect anti-falling rods elevating movement.Another effect forms spacing to anti-falling rods 7-1.
As shown in Figure 8, two ends have dowel hole 3-1 to dead axle 3, and middle part has the vertical kidney-shaped keyway 3-2 run through, and the locking key 4 forming with it moving sets is housed in this keyway 3-2.Spider gear 2 as shown in Figure 7, is made up of the two ends gear teeth by connecting cylinder 2-4 disjunctor, and it is recessed that its endoporus has five the interval ratchets be connected by endoporus segmental arc 2-1, just as handle ratchet wheel.Ratchet is recessed to be made up of decline locking end 2-2 and circular curve changeover portion 2-3.Visible in Fig. 8, locking key 4 is in shaped door, and upper end has the ratchet head 4-1 that recessed locking end 2-2 matches with ratchet, and the crotched circular arc of lower end shape touches a 4-2.
During use, as shown in Fig. 2,3,4,5, when the lifted scaffold falling proof device of Fig. 1 is fixed on supporting walls 10 up and down, two of lifted scaffold 7 anti-falling rods 7-1 are passed in the snap fit of the opening 1-3 of bearing 1 dust-proof water board joint 1-4 in place, the terraced bar 7-2 between two anti-falling rods 7-1 is engaged with spider gear 2.When the corresponding locking end 2-2 position of ratchet head 4-1, touch the corresponding changeover portion 2-3 position of a 4-2, and ratchet head and touch one of head when stretching out keyway, another retraction keyway.
Specifically, when slow lifting lifted scaffold 7, under gravity, fit spider gear 2 endoporus profile, steadily back and forth lifting all the time in lower end in locking key 4.When the corresponding locking end 2-2 position of ratchet head 4-1, owing to touching a 4-2 corresponding changeover portion 2-3 position, therefore ratchet head 4-1 retraction keyway, can not affect the rotation of spider gear 2, lifted scaffold 7 is able to freely be elevated as required.When being elevated lifted scaffold 7 and landing suddenly, as shown in Figure 6, locking key 4 will be in state of weightlessness, because touch 4-2 contact endoporus segmental arc 2-1 and by jacking stretch out keyway 3-2 ratchet head 4-2 can not spider gear 2 go to touch a 4-2 corresponding changeover portion 2-3 time because of the deadweight of locking key 4 the keyway 3-2 that retracts, the locking end 2-2 recessed with ratchet engages by result, play the counteresteer effect of ratchet mechanism in time, spider gear 2 is made to block the terraced bar 7-2 between anti-falling rods because being rotated further, make lifted scaffold 7 stop declining, thus play anti-fall effect.
Facts have proved, the present embodiment, owing to have employed unique weightless switching mechanism, therefore compared with various prior art, plays the anti-fall effect of reliable locking, even if also all-the-time stable is reliable for Long-Time Service when ratchet can be made to fall at the fast speed.
Claims (7)
1. a lifted scaffold falling proof device, comprise the bearing with vertical gulde edge, the horizontal dead axle of described seat supports kink spider gear, is characterized in that: have the vertical keyway run through in the middle part of described dead axle, the locking key forming with it moving sets is housed in described keyway; It is recessed that the endoporus of described spider gear has the interval ratchet be connected by endoporus segmental arc, and described ratchet is recessed to be made up of decline locking end and curve transition; The upper end of described locking key has the ratchet head that recessed locking end matches with ratchet, and the lower end of described locking key has touches head; When the corresponding locking end position of described ratchet head, described in touch the corresponding changeover portion position of head; Described ratchet head and touch one of head when stretching out keyway, another retraction keyway.
2. lifted scaffold falling proof device according to claim 1, is characterized in that: connected by rear fishplate bar, dust-proof water board joint between the biside plate of described bearing, support the horizontal dead axle of kink spider gear between bottom two gripper shoe of described bearing.
3. lifted scaffold falling proof device according to claim 2, is characterized in that: described dust-proof water board joint is positioned at above spider gear, and has the opening that two ends form snap fit.
4. lifted scaffold falling proof device according to claim 3, is characterized in that: be connected through the hinge inside described dust-proof water board joint.
5. lifted scaffold falling proof device according to claim 4, is characterized in that: the two ends of described dead axle have dowel hole, and middle part has the vertical kidney-shaped keyway run through.
6. lifted scaffold falling proof device according to claim 5, is characterized in that: described spider gear is made up of the two ends gear teeth by connecting cylinder disjunctor.
7. lifted scaffold falling proof device according to claim 6, it is characterized in that: described locking key is in shaped door, upper end has the ratchet head that recessed locking end matches with ratchet, the crotched circular arc of lower end shape touches head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520297825.4U CN204609269U (en) | 2015-05-11 | 2015-05-11 | A kind of lifted scaffold falling proof device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520297825.4U CN204609269U (en) | 2015-05-11 | 2015-05-11 | A kind of lifted scaffold falling proof device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204609269U true CN204609269U (en) | 2015-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520297825.4U Expired - Fee Related CN204609269U (en) | 2015-05-11 | 2015-05-11 | A kind of lifted scaffold falling proof device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204609269U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104818839A (en) * | 2015-05-11 | 2015-08-05 | 江苏省华建建设股份有限公司 | Falling preventing device of lifting type scaffold |
| CN106988523A (en) * | 2017-05-10 | 2017-07-28 | 深圳市中升建科科技发展有限公司 | A kind of sliding pin brakes wheel safety hook |
-
2015
- 2015-05-11 CN CN201520297825.4U patent/CN204609269U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104818839A (en) * | 2015-05-11 | 2015-08-05 | 江苏省华建建设股份有限公司 | Falling preventing device of lifting type scaffold |
| CN106988523A (en) * | 2017-05-10 | 2017-07-28 | 深圳市中升建科科技发展有限公司 | A kind of sliding pin brakes wheel safety hook |
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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: 20150902 Termination date: 20190511 |