CN213204934U

CN213204934U - Anti-falling mechanism with dustproof cover

Info

Publication number: CN213204934U
Application number: CN202021727355.8U
Authority: CN
Inventors: 马仁怀; 刘学成; 尚厚延; 马智宇
Original assignee: Shandong Xinhuoxin Material Technology Co ltd
Current assignee: Shandong Xinhuoxin Material Technology Co ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-05-14
Anticipated expiration: 2030-08-18

Abstract

The utility model discloses a prevent weighing down mechanism that contains shield, including attaching wall support assembly, leading wheel assembly, off-load ejector pin assembly, guide rail and shield, attach wall support assembly and be connected with the guide rail through the leading wheel assembly, off-load ejector pin assembly with attach wall support assembly rotatable coupling, off-load ejector pin assembly can contact with the guide rail, the shield is established on attaching a terminal surface of wall support assembly, the shield is used for attaching the dustproof of wall support assembly, the shield includes dustproof recess and dustproof backup pad, dustproof recess and dustproof backup pad are connected, have seted up the through-hole on dustproof recess, and off-load ejector pin assembly passes the through-hole and attaches wall support assembly and be connected. Has the advantages that: overall structure is simple, and performance is stable, the aluminum alloy material, light in weight, stand wear and tear, long service life. The dustproof effect is very good, and processing is convenient, simple to operate.

Description

Anti-falling mechanism with dustproof cover

Technical Field

The utility model relates to a climb a technical field that prevents weighing down, concretely relates to prevent weighing down mechanism who contains shield.

Background

The lifting scaffold is also called climbing frame, is a novel scaffold system developed in recent years and is mainly applied to high-rise shear wall type building plates. It can climb up or down along the building. This system makes the scaffold technology completely improved: firstly, the frame does not need to be turned over; and secondly, the scaffold is free from the dismounting and mounting procedures (the scaffold is used until the construction is finished after one-time assembly), and is not limited by the height of a building, so that the manpower and the materials are greatly saved. And also has a great improvement on the traditional scaffold in the safety angle. Has great development advantages in high-rise buildings.

Just because the climbing frame can climb up or descend, the climbing frame cannot accidentally fall down when being fixed at a correct use position, namely the falling prevention performance of the falling prevention mechanism in the climbing frame is very important, and the operation efficiency of the falling prevention mechanism also influences the construction progress.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is not enough that prior art is overcome to the purpose, provides an anti-falling mechanism who contains shield, and overall structure is simple, and performance is stable, the aluminum alloy material, light in weight, stand wear and tear, long service life. The unloading ejector rod assembly is stable in performance, simple to operate and quicker in operation implementation effect than the prior art. Through the addition of the dustproof cover, sundries such as building concrete, stones and the like are effectively prevented from falling into the anti-falling mechanism, the failure of the anti-falling mechanism caused by the foreign sundries is avoided, and the anti-falling performance of the anti-falling mechanism is ensured. The dust cover is integrally formed, the protection effect is good, the structure is simple, the processing is convenient, and the installation is convenient.

The purpose of the utility model is achieved through the following technical measures: the utility model provides a prevent weighing down mechanism who contains shield, is including attaching wall support assembly, leading wheel assembly, off-load ejector pin assembly, guide rail and shield, attach wall support assembly and pass through the leading wheel assembly and be connected with the guide rail, off-load ejector pin assembly with attach wall support assembly rotatable coupling, off-load ejector pin assembly can contact with the guide rail, the shield is established on attaching a terminal surface of wall support assembly, the shield is used for attaching the dust-proof of wall support assembly, the shield includes dust groove and dust backup pad, dust groove and dust backup pad are connected, have seted up the through-hole on dust groove, and off-load ejector pin assembly passes the through-hole and attaches wall support assembly and be connected.

Furthermore, the guide wheel assembly comprises a fixed support, a guide wheel and a guide wheel pin shaft, the guide wheel is connected to the fixed support through the guide wheel pin shaft, and the guide wheel can roll on the guide rail.

Further, attach wall support assembly including attaching the wall support, reset spring, the pendulum piece, spacing axle, little tongue and many tooth ratchet, attach the wall support and include first support cavity and second support cavity, first support cavity and second support cavity are connected, and first support cavity is the trapezium structure, reset spring, pendulum piece, spacing axle, little tongue and many tooth ratchet are established in second support cavity, and second support cavity can dismantle with the leading wheel assembly and be connected, off-load ejector pin assembly and second support cavity rotatable coupling.

Further, the multi-tooth ratchet wheel is connected in the second supporting cavity through a first positioning pin shaft, the anti-falling swinging block is connected in the second supporting cavity through a second positioning pin shaft, the anti-falling swinging block is in contact with the multi-tooth ratchet wheel, a groove is formed in the anti-falling swinging block, a small tongue is embedded in the groove, the multi-tooth ratchet wheel can drive the swinging block to rotate through the small tongue when rotating anticlockwise, the reset spring is used for resetting the swinging block, the limit shaft is used for limiting the swinging block, and the small tongue is compressed → opened in reciprocating motion under the stirring of teeth of the multi-tooth ratchet wheel when rotating clockwise.

Furthermore, a groove is formed in the side edge of the small tongue, a torsion spring is arranged in the groove, the second positioning pin shaft penetrates through the torsion spring, and the torsion spring is used for resetting the compressed small tongue.

Furthermore, the dust cover is arranged on one end face of the second supporting cavity.

Furthermore, the unloading ejector rod assembly comprises an ejector rod seat, an ejector rod lead screw, an ejector rod sleeve, an adjusting nut, a brake head seat and a brake head, wherein the ejector rod seat is cylindrical, one end of the ejector rod lead screw is fixedly connected with the outer wall of the ejector rod seat, the ejector rod sleeve and the adjusting nut are sequentially sleeved at the other end of the ejector rod lead screw, the ejector rod sleeve is fixedly connected with the adjusting nut, the top end of the ejector rod sleeve is connected with the brake head through the brake head seat, and the brake head is matched with the guide rail for use.

Furthermore, the brake head seat is fixedly connected with the ejector rod sleeve, a central hole is formed in the brake head seat, the bottom of the brake head extends downwards to form a central rod, the central rod is inserted into the central hole and penetrates through the central hole to extend out of the bottom of the brake head seat, the tail end of the central rod is inserted into a cotter pin or a pin shaft or a snap spring clamped on the cotter pin or a welding limiting washer, and the brake head seat is welded with the ejector rod sleeve.

Furthermore, the threads of the ejector rod lead screw are trapezoidal threads, and the threads of the adjusting nut are trapezoidal threads.

Furthermore, the inner wall of the cylinder of the ejector rod seat is connected with the wall-attached support assembly through a third positioning pin shaft.

Compared with the prior art, the beneficial effects of the utility model are that: overall structure is simple, and performance is stable, the aluminum alloy material, light in weight, stand wear and tear, long service life. The unloading ejector rod assembly is stable in performance, simple to operate and quicker in operation implementation effect than the prior art. Through the addition of the dustproof cover, sundries such as building concrete, stones and the like are effectively prevented from falling into the anti-falling mechanism, the failure of the anti-falling mechanism caused by the foreign sundries is avoided, and the anti-falling performance of the anti-falling mechanism is ensured. The dust cover is integrally formed, the protection effect is good, the structure is simple, the processing is convenient, and the installation is convenient.

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a schematic structural diagram of a fall arrest mechanism including a dust cap.

FIG. 2 is a schematic structural view of a wall attachment bracket assembly.

Fig. 3 is a schematic structural view of the guide wheel assembly.

Fig. 4 is a schematic structural diagram of the unloading ejector rod assembly.

Fig. 5 is a schematic structural view of the dust cap.

FIG. 6 is a schematic view of the installation of a multi-tooth ratchet and a small tongue.

The anti-falling device comprises a wall-attached support assembly 10, a wall-attached support 11, a multi-tooth ratchet 12, a first positioning pin shaft 13, an anti-falling swing block 14, a groove 141, a second positioning pin shaft 15, a small tongue 16, a torsion spring 161, a limiting shaft 17, a third positioning pin shaft 18, a reset spring 19, a guide wheel assembly 20, a fixed support 21, a guide wheel 22 and a guide wheel pin shaft 23; 30. the unloading ejector rod assembly comprises 31 parts of an ejector rod seat, 32 parts of an ejector rod lead screw, 33 parts of an ejector rod sleeve, 34 parts of an adjusting nut, 35 parts of a brake head seat and 36 parts of a brake head; 40. a guide rail; 50. dustproof cover, 51 dustproof recess, 52 dustproof backup pad, 53 the through-hole.

Detailed Description

As shown in fig. 1 to 6, an anti-falling mechanism with a dust cover comprises a wall-attached support assembly 10, a guide wheel assembly 20, an unloading ejector rod assembly 30, a guide rail 40 and a dust cover 50, wherein the wall-attached support assembly 10 is connected with the guide rail 40 through the guide wheel assembly 20, the unloading ejector rod assembly 30 is rotatably connected with the wall-attached support assembly 10, the unloading ejector rod assembly 30 can be in contact with the guide rail 40, the dust cover 50 is arranged on one end face of the wall-attached support assembly 10, the dust cover 50 is used for preventing dust of the wall-attached support assembly 10, and the dust cover 50 prevents sundries such as building concrete and stones from falling into a second supporting cavity of the wall-attached support 11, so that the anti-falling swing block 14 and the multi-tooth ratchet 12 are blocked and fail. The guide rail 40 is formed integrally by aluminum alloy. The dust cover 50 comprises a dust-proof groove 51 and a dust-proof support plate 52, the dust-proof groove 51 is connected with the dust-proof support plate 52, a through hole 53 is formed in the dust-proof groove 51, and the unloading ejector rod assembly 30 penetrates through the through hole 53 to be connected with the wall-attached support assembly 10. The dust cover 50 is formed by integrally extruding aluminum alloy. The dust cover 50 has the advantages of no protective leak, better protective effect, simple structure, convenient processing and convenient installation from the structural point of view.

The guide wheel assembly 20 comprises a fixed support 21, a guide wheel 22 and a guide wheel pin shaft 23, wherein the guide wheel 22 is connected to the fixed support 21 through the guide wheel pin shaft 23, and the guide wheel 22 can roll on the guide rail 40. Two groups of guide wheels 22 are arranged, one side surface of the guide rail 40 is provided with anti-falling holes, the other side surface of the guide rail 40 is connected with a frame body of the climbing frame, two ends of the guide rail 40 are provided with guide grooves, the two groups of guide wheels 22 respectively roll in the guide grooves, and the guide wheels 22 and the guide rail 40 are matched to play a role in guiding and preventing overturning. The guide rail 40 can move up and down along the guide wheel 22 under an external force (such as an electric hoist), that is, the guide rail 40 drives the frame body of the climbing frame to move up and down on the outer side of the building wall. The multi-tooth ratchet wheel 12 is matched with the anti-falling hole for use. When the guide rail 40 ascends or descends, the multi-tooth ratchet wheel 12 rotates anticlockwise or clockwise under the driving of the anti-falling holes, and the anti-falling swing block 14 swings under the action of the multi-tooth ratchet wheel 12.

The wall-attached support assembly comprises a wall-attached support 11, a reset spring 19, an anti-falling swing block 14, a limiting shaft 17, a small tongue 16 and a multi-tooth ratchet wheel 12, wherein the wall-attached support 11 comprises a first support cavity and a second support cavity, the first support cavity is connected with the second support cavity, the first support cavity is of a trapezoidal structure, the reset spring 19, the anti-falling swing block 14, the limiting shaft 17, the small tongue 16 and the multi-tooth ratchet wheel 12 are arranged in the second support cavity, the second support cavity is detachably connected with a guide wheel assembly 20, and an unloading ejector rod assembly 30 is rotatably connected with the second support cavity.

The first supporting cavity is provided with a connecting hole, and the first supporting cavity is fixed with a building wall (a solidified concrete wall) through the connecting hole by a bolt. The first supporting cavity is of a trapezoidal structure, so that the supporting performance is better, and the stability is better.

The multi-tooth ratchet wheel 12 is connected in a second supporting cavity through a first positioning pin shaft 13, the anti-falling swing block 14 and the small tongue 16 are connected in the second supporting cavity through a second positioning pin shaft 15, the anti-falling swing block 14 is in contact with the multi-tooth ratchet wheel 12, and a limiting shaft 17 used for limiting the stroke swing of the anti-falling swing block 14 is further arranged in the second supporting cavity. And a partition plate is arranged in the second supporting cavity. The number of the partition plates is 2, the 2 partition plates are arranged in parallel, and the multi-tooth ratchet wheel 12 and the anti-falling swing block 14 are arranged between the two partition plates. The space bar is also used for positioning the dust cover 50, specifically, the dust support plate 52 is lapped on the space bar to prevent the dust cover 50 from shaking left and right in the second support cavity, and of course, the first positioning pin shaft 13, the second positioning pin shaft 15, the limiting shaft 17 and the third positioning pin shaft 18 in the second support cavity all need to pass through the space bar. The partition plate also serves to reinforce the wall attachment support 11. The anti-falling swinging block 14 is in contact with the multi-tooth ratchet wheel 12, a groove 141 is formed in the anti-falling swinging block 14, the small tongue 16 is embedded in the groove 141, the anti-falling swinging block 14 can be driven to rotate through the small tongue 16 when the multi-tooth ratchet wheel 12 rotates anticlockwise, the reset spring 19 is used for resetting the anti-falling swinging block 14, the limit shaft 17 is used for limiting the anti-falling swinging block 14, and the small tongue 16 is pushed by the teeth of the multi-tooth ratchet wheel 12 to perform compression → opening reciprocating motion when the multi-tooth ratchet wheel 12 rotates clockwise.

A groove is formed in the side edge of the small tongue 16, a torsion spring 161 is arranged in the groove, the second positioning pin 15 penetrates through the torsion spring 161, and the torsion spring 161 is used for resetting the compressed small tongue 16.

The dust cover 50 is provided on one end face of the second support cavity.

The unloading ejector rod assembly 30 comprises an ejector rod seat 31, an ejector rod lead screw 32, an ejector rod sleeve 33, an adjusting nut 34, a brake head seat 35 and a brake head 36, wherein the ejector rod seat 31 is cylindrical, one end of the ejector rod lead screw 32 is fixedly connected with the ejector rod seat 31, the other end of the ejector rod lead screw 32 is sequentially sleeved with the ejector rod sleeve 33 and the adjusting nut 34, the ejector rod sleeve 33 is fixedly connected with the adjusting nut 34, the top end of the ejector rod sleeve 33 is connected with the brake head 36 through the brake head seat 35, and the brake head 36 is matched with the guide rail 40 for use. The cylindrical ejector rod seat 31 has larger bearing capacity than other ejector rod seats 31 in the prior art, is not easy to deform, and has longer and more stable supporting performance of the unloading ejector rod assembly 30.

The brake head base 35 is fixedly connected with the ejector rod sleeve 33, a central hole is formed in the brake head base 35, the bottom of the brake head 36 extends downwards to form a central rod, the central rod is inserted into the central hole and penetrates through the central hole to extend out of the bottom of the brake head base 35, the tail end of the central rod is inserted into a cotter pin or a pin shaft or a snap spring clamped on the cotter pin or a welding limiting washer, and the brake head base 35 is welded with the ejector rod sleeve 33. The central rod can rotate 360 degrees in the central hole, namely the brake head 36 can rotate 360 degrees on the brake head seat 35, and the brake head 36 can be more conveniently and flexibly inserted into the anti-falling hole of the guide rail 40. The number of the braking heads 36 is 2, the 2 braking heads 36 are arranged side by side, the 2 braking heads 36 are arranged in a high-low mode, when the guide rail 40 rises or falls, after the guide rail 40 enters a preset position, which braking head 36 is close to the anti-falling hole of the guide rail 40 and is inserted by using which braking head, the ejector rod sleeve 33 is screwed to adjust the height, the braking heads 36 are made to abut against the guide rail 40, the operation of site workers is convenient, and the working efficiency is high.

The threads of the ejector rod lead screw 32 are trapezoidal threads, the threads of the adjusting nut 34 are trapezoidal threads, and the overall thread direction is consistent. Slight colliding with of trapezoidal thread, rust stain can not appear twisting motionless phenomenon soon, and trapezoidal thread's ejector pin lead screw 32 helical pitch is big moreover, and work efficiency is high, and when constructor on-the-spot adjustment ejector pin sleeve 33, need not use the spanner, bare-handed just can twist soon, labour saving and time saving, efficient.

The cylindrical inner wall of the ejector rod seat 31 is connected with the wall-attached support assembly 10 through a third positioning pin shaft 18.

The unloading ejector rod assembly 30 passes through the through hole 53 and is connected with the wall-attached support assembly 10. Specifically, the third positioning pin 18 passes through the through hole 53 and is connected with the second supporting cavity.

The dust cover 50 is simple in structure and convenient to process, the dust cover 50 is connected to the second supporting cavity in a lap joint mode through the dust supporting plate 52, the third positioning pin shaft 18 is used for fixing the dust cover 50, and the unloading ejector rod assembly 30 rotates around the third positioning pin shaft 18 in the dust-proof groove 51.

The working principle is as follows:

the static operation state of the climbing frame: as shown in fig. 4, after the climbing frame is lifted to the working position, all the unloading ejector rod assemblies 30 are involved in working, and the ejector rod screw rod 32 is rotated to adjust the length and the direction, so that the braking head 36 is clamped in the anti-falling hole, all the loads of the climbing frame are borne, and the load pressure of the lifting device is reduced.

Climbing a frame to rise: the unloading ejector rod assembly 30 is in an open state, the guide rail 40 rises along with the lifting device, the multi-tooth ratchet wheel 12 rotates clockwise along with the guide rail 40, the small tongue 16 reciprocates between an opening state → a compression state → an opening state in the rotating process of the teeth of the multi-tooth ratchet wheel 12, and the anti-falling swinging block 14 does not intervene in the work, so that the normal rising movement of the guide rail 40, namely the rising of the climbing frame, is realized.

The descending working state of the climbing frame: when the climbing frame descends, the guide rail 40 moves downwards to drive the multi-tooth ratchet 12 to move anticlockwise, the teeth of the multi-tooth ratchet 12 poke the small tongue 16, and then the small tongue 16 drives the anti-falling swing block 14 to rotate clockwise. After the teeth of the multi-tooth ratchet 12 are not contacted with the small tongue 16, the anti-falling swing block 14 rebounds to the original position under the action of the return spring 19, so that the normal descending work of the guide rail 40, namely the descending of the climbing frame, is realized.

The anti-falling principle of the climbing frame is as follows: when the climbing frame suddenly falls during ascending operation or when the climbing frame suddenly falls during normal descending operation, the guide rail 40 quickly moves downwards to drive the multi-tooth ratchet wheel 12 to perform anticlockwise movement, the teeth of the multi-tooth ratchet wheel 12 stir the small tongue 16, and then the small tongue 16 drives the anti-falling swing block 14 to rotate clockwise to a position between two teeth of the multi-tooth ratchet wheel 12; because the descending speed of the climbing frame is high and the descending speed of the climbing frame is large different from the normal descending speed, the rotating speed of the multi-tooth ratchet wheel 12 is larger than the resetting speed of the anti-falling swing block 14, the lower end of the anti-falling swing block 14 can be clamped by the teeth of the multi-tooth ratchet wheel 12 after being rebounded and reset, the upper end of the anti-falling swing block 14 is blocked by the limiting shaft 17, namely the rotation of the multi-tooth ratchet wheel 12 is braked and stopped by the anti-falling swing block 14, and the anti-falling of the.

It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a prevent weighing down mechanism that contains shield which characterized in that: including attaching wall support assembly, leading wheel assembly, off-load ejector pin assembly, guide rail and shield, attach wall support assembly and pass through the leading wheel assembly and be connected with the guide rail, off-load ejector pin assembly with attach wall support assembly rotatable coupling, off-load ejector pin assembly can contact with the guide rail, the shield is established on attaching a terminal surface of wall support assembly, the shield is used for attaching the dustproof of wall support assembly, the shield includes dustproof groove and dustproof backup pad, dustproof groove and dustproof backup pad are connected, have seted up the through-hole on dustproof groove, and off-load ejector pin assembly passes the through-hole and attaches wall support assembly and be connected.

2. The anti-fall mechanism with the dust cover according to claim 1, characterized in that: the guide wheel assembly comprises a fixed support, guide wheels and guide wheel pin shafts, the guide wheels are connected to the fixed support through the guide wheel pin shafts, and the guide wheels can roll on the guide rails.

3. The anti-fall mechanism with the dust cover according to claim 1, characterized in that: attach wall support assembly including attaching the wall support, reset spring prevents weighing down the pendulum piece, spacing axle, little tongue and many tooth ratchet, attach the wall support and include that first support cavity and second support the cavity, first support cavity and second support the cavity and connect, and first support cavity is trapezium structure, reset spring, pendulum piece, spacing axle, little tongue and many tooth ratchet are established in second support cavity, and second support cavity can dismantle with the leading wheel assembly and be connected, and off-load ejector pin assembly and second support cavity rotatable coupling.

4. The anti-fall mechanism with the dust cover according to claim 3, characterized in that: the multi-tooth ratchet wheel is connected in a second supporting cavity through a first positioning pin shaft, the anti-falling swinging block is connected in the second supporting cavity through a second positioning pin shaft, the anti-falling swinging block is in contact with the multi-tooth ratchet wheel, a groove is formed in the anti-falling swinging block, a small tongue is embedded in the groove, when the multi-tooth ratchet wheel rotates anticlockwise, the swinging block can be driven to rotate through the small tongue, the reset spring is used for resetting the swinging block, the limiting shaft is used for limiting the swinging block, and when the multi-tooth ratchet wheel rotates clockwise, the small tongue is stirred by teeth of the multi-tooth ratchet wheel and performs compression → opening reciprocating motion.

5. The anti-fall mechanism with the dust cover according to claim 4, characterized in that: the side edge of the small tongue is provided with a groove, a torsion spring is arranged in the groove, and the second positioning pin shaft penetrates through the torsion spring which is used for resetting after the small tongue is compressed.

6. The anti-fall mechanism with the dust cover according to claim 4, characterized in that: the dust cover is arranged on one end face of the second supporting cavity.

7. The anti-fall mechanism with the dust cover according to claim 1, characterized in that: the unloading ejector rod assembly comprises an ejector rod seat, an ejector rod lead screw, an ejector rod sleeve, an adjusting nut, a brake head seat and a brake head, wherein the ejector rod seat is cylindrical, one end of the ejector rod lead screw is fixedly connected with the outer wall of the ejector rod seat, the ejector rod sleeve and the adjusting nut are sequentially sleeved at the other end of the ejector rod lead screw, the ejector rod sleeve is fixedly connected with the adjusting nut, the top end of the ejector rod sleeve is connected with the brake head through the brake head seat, and the brake head is matched with the guide rail for use.

8. The anti-fall mechanism with the dust cover according to claim 7, characterized in that: the brake head base is fixedly connected with the ejector rod sleeve, a central hole is formed in the brake head base, the bottom of the brake head extends downwards to form a central rod, the central rod is inserted into the central hole and penetrates through the central hole to extend out of the bottom of the brake head base, the tail end of the central rod is inserted into a cotter pin or a pin shaft or a snap spring clamped on the cotter pin or a welding limiting washer, and the brake head base is welded with the ejector rod sleeve.

9. The anti-fall mechanism with the dust cover according to claim 7, characterized in that: the threads of the ejector rod lead screw are trapezoidal threads, and the threads of the adjusting nut are trapezoidal threads.

10. The anti-fall mechanism with the dust cover according to claim 7, characterized in that: and the inner wall of the cylinder of the ejector rod seat is connected with the wall-attached support assembly through a third positioning pin shaft.