CN214935558U - Lever linkage type anti-falling ladder stand - Google Patents
Lever linkage type anti-falling ladder stand Download PDFInfo
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- CN214935558U CN214935558U CN202120849619.5U CN202120849619U CN214935558U CN 214935558 U CN214935558 U CN 214935558U CN 202120849619 U CN202120849619 U CN 202120849619U CN 214935558 U CN214935558 U CN 214935558U
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Abstract
The utility model discloses a lever coordinated type prevents weighing down cat ladder, including left main pole setting (1), right main pole setting (10), gangbar (3), fixed pole (19) of marking time, transmission pole (4) of marking time, prevent weighing down transfer line (6), indulge fender rod (8), horizontal fender rod (9) and prevent weighing down mechanism (7). The left main upright stanchion (1) and the right main upright stanchion (10) are welded and connected into an integral structure through an upper fixed stepping rod and a lower fixed stepping rod; the transmission stepping rod penetrates through the left main upright rod and is hinged with the linkage rod. The device is formed by connecting a plurality of lever linkage type anti-falling ladder stand monomers in series in the vertical direction to form a complete ladder stand assembly. When the climbing person presses the transmission stepping rod by hands or feet, the anti-falling cover plate can be erected to enable the climbing person to smoothly pass through the ladder climbing channel, and when the climbing person leaves the transmission stepping rod by hands or feet, the anti-falling cover plate automatically resets to be in a horizontal position to cover the ladder climbing channel, so that the personal safety of the climbing person is ensured.
Description
Technical Field
The invention relates to a ladder climbing device, in particular to a lever linkage type anti-falling ladder climbing device.
Background
The ladder stand device is closely related to daily life and work activities of people, also is the upper and lower climbing apparatus that arrives commonly used in the main large-scale construction machinery tower crane of construction site, the cat ladder that current daily life and work activities used and the tower crane cat ladder that construction site used all do not have guard ring and prevent weighing down the mechanism, when tower crane ann tears the personnel and the driver vertical ladder down, when not concentrating on attention or the ladder moisture skidded, step on the sky easily and fall, lead to high weight casualty accident to take place, there is the potential safety hazard. Chinese patent CN203486809U discloses a tower crane vertical ladder anti-falling device in 2014, 03 month 19, the device includes tower crane standard knot vertical rod, tower crane standard knot horizontal rod, tower crane vertical ladder, safety net. Although this technical scheme's anti-falling device can play certain guard action, but this protector need utilize tower crane standard festival montant and horizontal pole, and it is more troublesome to connect between the two, and the protective shroud that adopts distributes unreasonablely moreover, and the safety net that adopts is very easily depreciated under open-air condition, has the potential safety hazard problems such as damage, fracture, insecure. Therefore, the ladder climbing device needs to be optimized and improved, and a novel lever linkage type anti-falling ladder climbing device is produced.
Disclosure of Invention
The invention aims to solve the problems and provides a novel lever linkage type anti-falling ladder climbing device which has the advantages of good protection performance, simple structure, strong practicability, safety, reliability, strong impact resistance and the like.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a lever linkage type anti-falling ladder comprises a left main vertical rod, a right main vertical rod, a linkage rod, a fixed stepping rod, a transmission stepping rod, an anti-falling transmission rod, a longitudinal protection rod, a transverse protection rod and an anti-falling mechanism. The left main upright stanchion and the right main upright stanchion are welded and connected into an integral structure through an upper fixed stepping rod and a lower fixed stepping rod; the transmission stepping rod penetrates through the left main upright rod and is hinged with the linkage rod. The device is formed by connecting a plurality of lever linkage type anti-falling ladder stand independent units in series in the vertical direction to form a complete ladder stand assembly.
As further improvement and improvement on the technical scheme, the invention adopts the following technical measures:
the full-length position of the ladder sections of the ladder is provided with a transmission stepping rod every 300 mm-400 mm, and only one anti-falling transmission rod is arranged in the middle of each ladder section. The left end of the transmission stepping rod is lifted upwards by 100-200 mm, passes through a chute in the left main upright rod and is hinged with the linkage rod through a hinge; the linkage rod is connected with the left main upright rod in a pulling way through a return spring.
The anti-falling mechanism consists of an anti-falling cover main rod, an anti-falling cover encryption rod and an anti-falling cover rotating rod, wherein a plurality of anti-falling cover encryption rods are additionally welded between the anti-falling cover main rod and the anti-falling cover rotating rod, and the distance between the anti-falling cover main rod and the anti-falling cover rotating rod is not less than 200 mm; a rotating support is welded on the left main upright stanchion at a position close to the anti-falling cover rotating rod, the anti-falling cover rotating rod is hinged with the rotating support through a connecting bolt, the outer end of the connecting bolt is screwed into a fixed nut, and a backstop pin penetrates through the outer side of the connecting bolt; the connecting end of the anti-falling cover rotating rod is sleeved in the anti-falling transmission rod; the anti-falling mechanism is arranged in the middle of each unit ladder section plate.
Prevent weighing down when covering the dwang level and placing, its connection end is 45 degrees with the contained angle of vertical axle upper portion direction, works as prevent weighing down when covering the dwang and upwards rotating roughly vertical position, its connection end is close to 135 degrees with the contained angle of vertical axle clockwise.
The distance between the longitudinal guard rods is not more than 400 mm; the distance between the transverse guard rods is not more than 1500 mm.
The upper part of the transmission stepping rod is provided with an antiskid block which is horizontally placed, the transmission stepping rod respectively penetrates through a linkage rod on the inner side of the left main upright rod and the outer side of the right main upright rod and is hinged with the linkage rod, and the right main upright rod is fixed on the upper part of the surface of the right main upright rod facing the anti-falling mechanism.
The anti-falling mechanism consists of an anti-falling basket and a universal pulley; the anti-falling basket consists of an anti-falling cover main rod, an anti-falling cover encryption rod, a longitudinal protection rod, a transverse protection rod and a safety belt; the universal pulley freely slides in the through-length sliding groove in the middle of the left main upright rod and the right main upright rod.
The transmission stepping rod is lifted upwards by 100-200 mm near the left main upright rod and obliquely penetrates through the through long chute in the middle of the left main upright rod until reaching the outermost side of the cavity of the left main upright rod.
The uppermost transmission stepping rod in the through long chute in the middle of the left main upright rod is provided with an oblique wedge-shaped end; the transmission stepping rods in the other through long sliding chutes are provided with round end heads; when a climber climbs upwards or downwards together with the anti-falling basket by using the safety belt, the climber presses the transmission stepping rods by hands or feet, all the transmission stepping rods slide towards the right main vertical rod, the wedge-shaped end heads and the circular end heads slide through the through-length sliding groove in the middle of the left main vertical rod and are positioned at the innermost side of the cavity of the left main vertical rod, and therefore universal pulleys on two sides of the anti-falling basket can freely slide in the through-length sliding grooves in the middle of the left main vertical rod and the right main vertical rod; at the moment, the transmission stepping rod is basically in a horizontal position, when a climber climbs the section of the ladder, the section of the ladder returns to the original position under the action of the pulling force of the return spring, and the wedge-shaped end of the transmission stepping rod returns to the outermost side of the cavity of the left main upright rod again, so that the falling prevention basket and the climber are prevented from falling down without hands due to accidents.
The technical measures of the utility model have the substantial advantages that are very outstanding: 1. the ladder stand device adopting the technical measures has the advantages of good protective performance, simple structure, strong practicability, safety, reliability, strong impact resistance and the like. 2. The ladder climbing device adopting the technical measures is characterized in that the anti-falling cover plate is arranged at about one floor height (3000 mm to 5000 mm) of each ladder section, or a climber climbs upwards or downwards together with the anti-falling basket by using the safety belt, so that the 'terrible height' phenomenon of the climber is avoided, and the personal safety of the climber is ensured.
The invention has the advantages of ingenious design, simple structure, convenient installation, economy and remarkable protection function.
Drawings
The invention is further described with reference to the following description and embodiments in conjunction with the accompanying drawings. 1. Fig. 1 is a front view of a first embodiment of the present invention. 2. Fig. 2 is a sectional view a-a of fig. 1. 3. Fig. 3 is a left sectional view B-B of fig. 2. 4. FIG. 4 is a diagrammatic view of the first embodiment anti-falling transmission rod of the invention. 5. FIG. 5 is a perspective view of the fall arrest basket of the second embodiment. 6. Fig. 6 is a cross-sectional view C-C of fig. 5. 7. Fig. 7 is a cross-sectional view taken along line D-D of fig. 6. 8. Fig. 8 is a cross-sectional view E-E of fig. 6.
In the figure: 1-left main upright post, 2-return spring, 3-linkage rod, 4-transmission stepping rod, 5-hinge, 6-anti-falling transmission rod, 7-anti-falling mechanism, 8-longitudinal guard rod, 9-transverse guard rod, 10-right main upright post, 11-chute, 12-anti-falling cover main rod, 13-anti-falling cover encryption rod, 14-anti-falling cover rotating rod, 15-rotating support, 16-connecting bolt, 17-fixing nut, 18-connecting end, 19-fixing stepping rod, 20-anti-return pin, 21-universal pulley, 24-safety belt, 25-anti-slip block, 26-through long chute, 27-wedge-shaped end, 28-circular end and 29-anti-falling basket.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1, the first embodiment of the present disclosure: a lever linkage type anti-falling ladder stand comprises a left main vertical rod 1, a right main vertical rod 10, a linkage rod 3, a fixed stepping rod 19, a transmission stepping rod 4, an anti-falling transmission rod 6, a longitudinal protection rod 8, a transverse protection rod 9 and an anti-falling mechanism 7. The left main upright stanchion 1 and the right main upright stanchion 10 are welded and connected into an integral structure through an upper fixed stepping rod 19 and a lower fixed stepping rod 19; the transmission stepping rod 4 penetrates through the left main upright rod and is hinged with the linkage rod. The device is formed by connecting a plurality of lever linkage type anti-falling ladder stand independent units in series in the vertical direction to form a complete ladder stand assembly. When the climbing person presses the transmission stepping rod by hands or feet, the anti-falling cover plate can be erected to enable the climbing person to smoothly pass through the ladder climbing channel, and when the climbing person leaves the transmission stepping rod by hands or feet, the anti-falling cover plate automatically resets to be in a horizontal position to cover the ladder climbing channel, so that the personal safety of the climbing person is ensured.
The full-length position of the ladder sections of the ladder is provided with a transmission stepping rod 4 every 300 mm-400 mm, and only one anti-falling transmission rod 6 is arranged in the middle of each ladder section. The left end of the transmission stepping rod 4 is lifted upwards by 100 mm-200 mm, passes through the chute 11 in the left main upright rod 1 and is hinged with the linkage rod 3 through a hinge 5; the linkage rod 3 is connected with the left main upright rod 1 through a return spring 2 in a pulling mode.
As can be seen from fig. 2, the anti-falling mechanism 7 is composed of an anti-falling cover main rod 12, an anti-falling cover encryption rod 13 and an anti-falling cover rotating rod 14, wherein a plurality of anti-falling cover encryption rods are additionally welded between the anti-falling cover main rod and the anti-falling cover rotating rod, and the distance between the anti-falling cover main rod and the anti-falling cover rotating rod is not less than 200 mm; a rotating support 15 is welded on the left main upright rod 1 at a position close to the anti-falling cover rotating rod, the anti-falling cover rotating rod 14 is hinged with the rotating support 15 through a connecting bolt 16, the outer end of the connecting bolt 16 is screwed into a fixed nut 17, and a backstop pin 20 penetrates through the outer side of the connecting bolt; the connecting end 18 of the anti-falling cover rotating rod 14 is sleeved in the anti-falling transmission rod 6; the anti-falling mechanism 7 is arranged in the middle of each unit ladder section plate.
As can be seen from fig. 3 and 4, when the falling-prevention cover rotating rod 14 is horizontally placed, the included angle between the connecting end 18 and the upper direction of the vertical shaft is 45 degrees, and when the falling-prevention cover rotating rod 14 is upwardly rotated to a substantially vertical position, the included angle between the connecting end 18 and the clockwise direction of the vertical shaft is approximately 135 degrees.
As shown in fig. 1, the distance between the longitudinal guard bars 8 is not more than 400 mm; the distance between the transverse guard bars 9 is not more than 1500 mm.
As shown in fig. 7, the upper part of the transmission stepping rod 4 is provided with a horizontally placed anti-skid block 25, the transmission stepping rod 4 penetrates through the cavities of the left main upright rod 1 and the right main upright rod 10, the inner side of the left main upright rod 1 and the outer side of the right main upright rod 10 respectively penetrate through a linkage rod 3 and are hinged with the linkage rod 3, and the right main upright rod 10 is fixed on the upper part of the surface facing the anti-falling mechanism, which is provided with the right main upright rod 10.
As shown in fig. 5 and 6, the anti-falling mechanism 7 consists of an anti-falling basket 29 and a universal pulley 21; the anti-falling basket 29 consists of an anti-falling cover main rod 12, an anti-falling cover encryption rod 13, a longitudinal protection rod 8, a transverse protection rod 9 and a safety belt 24; the universal pulley 21 slides freely in the through long sliding groove 26 in the middle of the left main upright post 1 and the right main upright post 10.
As shown in figure 7, the transmission stepping rod 4 is lifted upwards by 100-200 mm near the left main vertical rod 1 and obliquely passes through the through long chute 26 in the middle of the left main vertical rod 1 until reaching the outermost side of the cavity of the left main vertical rod 1.
As can be seen from fig. 7 and 8, the uppermost transmission stepping rod 4 in the through long chute 26 in the middle of the left main vertical rod 1 is provided with an inclined wedge-shaped end 27; the transmission stepping rods 4 in the other through long sliding grooves 26 are provided with round end heads 28; when a climber climbs upwards or downwards together with the anti-falling basket 29 by using the safety belt 24, the climber presses the transmission stepping rods 4 by hands or feet, all the transmission stepping rods slide towards the right main vertical rod 10, the wedge-shaped end 27 and the circular end 28 slide through the through-length sliding groove 26 in the middle of the left main vertical rod 1 and are positioned at the innermost side of the cavity of the left main vertical rod 1, so that the universal pulleys 21 on two sides of the anti-falling basket 29 freely slide in the through-length sliding grooves 26 in the middle of the left main vertical rod 1 and the right main vertical rod 10; at the moment, the transmission stepping rod 4 is basically in a horizontal position, when a climber climbs the section of the ladder, the section of the ladder returns to the original position under the action of the pulling force of the return spring 2, and the wedge-shaped end 27 of the transmission stepping rod 4 returns to the outermost side of the cavity of the left main upright rod 1 again to prevent the anti-falling basket 29 and the climber from dropping due to the accident condition.
The anti-falling manufacturing method for the crawling ladder has the substantial characteristics and obvious technical progress, effectively solves the problem of safe anti-falling in the climbing tower crane in daily life and industrial and civil building construction of people, and avoids the potential safety hazard problems that the protective ring adopted in the traditional crawling ladder protection is unreasonable in distribution, and the safety net is extremely easy to damage, break, unfit and the like in the open air.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. All equivalent technical solutions and various modifications are within the scope of the present invention, and all changes or substitutions and modifications obvious to those of ordinary skill in the art are included in the present invention.
Claims (10)
1. The utility model provides a lever coordinated type prevents weighing down cat ladder, includes left main pole setting (1), right main pole setting (10), gangbar (3), fixed pole (19) of marking time, transmission pole (4) of marking time, prevent weighing down transfer line (6), indulge fender rod (8), violently protect pole (9) and prevent weighing down mechanism (7), its characterized in that: the left main upright stanchion (1) and the right main upright stanchion (10) are welded and connected into an integral structure through an upper fixed stepping rod and a lower fixed stepping rod (19); the transmission stepping rod (4) penetrates through the left main upright rod and is hinged with the linkage rod (3); the device is characterized in that a plurality of lever linkage type anti-falling ladder stand independent monomers are connected in series in the vertical direction to form a complete ladder stand assembly; when the climbing person presses the transmission stepping rod by hands or feet, the anti-falling cover plate can be erected to enable the climbing person to smoothly pass through the ladder climbing channel, and when the climbing person leaves the transmission stepping rod by hands or feet, the anti-falling cover plate automatically resets to be in a horizontal position to cover the ladder climbing channel, so that the personal safety of the climbing person is ensured.
2. The lever linkage type anti-falling ladder stand according to claim 1, characterized in that: the full-length position of the ladder sections of the ladder is provided with a transmission stepping rod (4) every 300 mm-400 mm, and only one anti-falling transmission rod (6) is arranged in the middle of each ladder section.
3. The lever linkage type anti-falling ladder stand according to claim 1, characterized in that: the left end of the transmission stepping rod (4) is lifted upwards by 100 mm-200 mm, passes through a chute (11) in the left main upright rod (1), and is hinged with the linkage rod (3) through a hinge (5); the linkage rod (3) is connected with the left main upright rod (1) through a return spring (2) in a pulling mode.
4. The lever linkage type anti-falling ladder stand according to claim 1, characterized in that: the anti-falling mechanism (7) consists of an anti-falling cover main rod (12), an anti-falling cover encryption rod (13) and an anti-falling cover rotating rod (14), wherein a plurality of anti-falling cover encryption rods are additionally welded between the anti-falling cover main rod and the anti-falling cover rotating rod, and the distance between the anti-falling cover main rod and the anti-falling cover rotating rod is not less than 200 mm; a rotating support (15) is welded at the position, close to the anti-falling cover rotating rod, on the left main vertical rod (1), the anti-falling cover rotating rod (14) is hinged with the rotating support (15) through a connecting bolt (16), the outer end of the connecting bolt (16) is screwed into a fixing nut (17), and a non-return pin (20) penetrates through the outer side of the fixing nut; the connecting end (18) of the anti-falling cover rotating rod (14) is sleeved in the anti-falling transmission rod (6); the anti-falling mechanism (7) is arranged in the middle of each unit ladder section plate.
5. The lever linkage type anti-falling ladder stand according to claim 1, characterized in that: prevent weighing down when covering dwang (14) level and placing, its contained angle that connects end (18) and vertical axle upper portion direction is 45 degrees, works as prevent weighing down when covering dwang (14) upwards rotates roughly vertical position, its contained angle that connects end (18) and vertical axle clockwise is close to and is 135 degrees.
6. The lever linkage type anti-falling ladder stand according to claim 1, characterized in that: the distance between the longitudinal guard bars (8) is not more than 400 mm; the distance between the transverse guard bars (9) is not more than 1500 mm.
7. The lever linkage type anti-falling ladder stand according to claim 1, characterized in that: the anti-skidding mechanism is characterized in that an anti-skidding block (25) which is horizontally placed is arranged on the upper portion of a transmission stepping rod (4), the transmission stepping rod (4) penetrates through cavities of a left main vertical rod (1) and a right main vertical rod (10), a linkage rod (3) penetrates through the inner side of the left main vertical rod (1) and the outer side of the right main vertical rod (10) respectively and is hinged to the linkage rod (3), and the right main vertical rod (10) faces to the upper portion of the surface of the anti-falling mechanism and is fixedly provided with the right main vertical rod (10).
8. The lever linkage type anti-falling ladder stand according to any one of claims 1 or 7, characterized in that: the anti-falling mechanism (7) consists of an anti-falling basket (29) and a universal pulley (21); the anti-falling basket (29) consists of an anti-falling cover main rod (12), an anti-falling cover encryption rod (13), a longitudinal protection rod (8), a transverse protection rod (9) and a safety belt (24); the universal pulley (21) slides freely in a through long sliding groove (26) in the middle of the left main upright post (1) and the right main upright post (10).
9. The lever linkage type anti-falling ladder stand according to any one of claims 1 or 7, characterized in that: the transmission stepping rod (4) is upwards lifted by 100-200 mm near the left main upright stanchion (1) and obliquely passes through the through long chute (26) in the middle of the left main upright stanchion (1) until reaching the outermost side of the cavity of the left main upright stanchion (1).
10. The lever linkage type anti-falling ladder stand according to claim 1, characterized in that: the uppermost transmission stepping rod (4) in the through long chute (26) in the middle of the left main upright rod (1) is provided with a wedge-shaped end (27); the transmission stepping rods (4) in the other through long chutes (26) are provided with circular end heads (28); when a climber climbs upwards or downwards together with the anti-falling basket (29) by using the safety belt (24), the climber presses the transmission stepping rods (4) by hands or feet, all the transmission stepping rods slide in the direction of the right main vertical rod (10), the wedge-shaped end heads (27) and the circular end heads (28) slide through the through long sliding chute (26) in the middle of the left main vertical rod (1) and are positioned at the innermost side of the cavity of the left main vertical rod (1), so that the universal pulleys (21) on two sides of the anti-falling basket (29) freely slide in the through long sliding chutes (26) in the middle of the left main vertical rod (1) and the right main vertical rod (10); at the moment, the transmission stepping rod (4) is basically in a horizontal position, when a climber climbs the ladder section, the ladder section returns to the original position under the action of the pulling force of the return spring (2), and the wedge-shaped end (27) of the transmission stepping rod (4) returns to the outermost side of the cavity of the left main upright rod (1) again, so that the falling prevention basket (29) and the climber are prevented from falling off due to accidents.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120849619.5U CN214935558U (en) | 2021-04-23 | 2021-04-23 | Lever linkage type anti-falling ladder stand |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120849619.5U CN214935558U (en) | 2021-04-23 | 2021-04-23 | Lever linkage type anti-falling ladder stand |
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| CN214935558U true CN214935558U (en) | 2021-11-30 |
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| CN202120849619.5U Active CN214935558U (en) | 2021-04-23 | 2021-04-23 | Lever linkage type anti-falling ladder stand |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356751A (en) * | 2021-05-12 | 2021-09-07 | 江苏天宇建设集团有限公司 | Lever linkage type anti-falling ladder stand |
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- 2021-04-23 CN CN202120849619.5U patent/CN214935558U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356751A (en) * | 2021-05-12 | 2021-09-07 | 江苏天宇建设集团有限公司 | Lever linkage type anti-falling ladder stand |
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