CN110067377B - Falling protector for scaffold - Google Patents
Falling protector for scaffold Download PDFInfo
- Publication number
- CN110067377B CN110067377B CN201910445097.XA CN201910445097A CN110067377B CN 110067377 B CN110067377 B CN 110067377B CN 201910445097 A CN201910445097 A CN 201910445097A CN 110067377 B CN110067377 B CN 110067377B
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- Prior art keywords
- guide rail
- arm
- top plate
- arms
- side plates
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- 230000001012 protector Effects 0.000 title claims abstract description 20
- 230000000903 blocking effect Effects 0.000 claims abstract description 55
- 210000000078 claw Anatomy 0.000 claims description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 11
- 238000010276 construction Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 208000012661 Dyskinesia Diseases 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/001—Safety or protective measures against falling down relating to scaffoldings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
- E04G5/046—Means for fastening, supporting, or bracing scaffolds on or against building constructions for fastening scaffoldings on walls
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Emergency Lowering Means (AREA)
- Movable Scaffolding (AREA)
Abstract
The invention discloses a falling protector for a scaffold, which comprises two connecting arms which are oppositely arranged, and a wall attaching support fixedly connected with the same ends of the two connecting arms, wherein the wall attaching support is used for fixing the falling protector on a building wall; a pair of roller groups are arranged on each connecting arm, and the two pairs of roller groups are used for enabling a guide rail of the scaffold to vertically slide between the two pairs of roller groups; the two connecting arms are provided with a top plate and a bottom plate, the top plate and the bottom plate are fixedly connected with the two connecting arms, and the top plate and the bottom plate avoid a path of the roller group for assisting the guide rail to slide; two side plates are fixedly arranged between the top plate and the bottom plate, an anti-falling swing arm is arranged between the two side plates, the anti-falling swing arm is used for blocking a cross rod of the guide rail when the guide rail slides abnormally, and a support arm is hinged to one side, away from the anti-falling swing arm, of the top plate. The supporting arm, the anti-falling swing arm, the roller group and the wall attaching support are integrated with the connecting arm, so that the fixing procedure of the wall body of the building and the connecting procedure of the wall body of the building and the guide rail are simplified.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a falling protector for a scaffold.
Background
At present, high-rise and super-high-rise buildings in China are more and more, and most of the high-rise and super-high-rise buildings adopt attached lifting scaffolds to carry out decoration construction on the main body of the building and the outer building wall body in the construction process, and the attached lifting scaffolds are erected through one-time installation, so that the steel consumption is low, vertical transportation equipment is not occupied, manual use is low, the operation is convenient and simple, safety and reliability are realized, and the high-rise and super-high-rise building has good application prospects. The traditional lifting scaffold mainly comprises a vertical main frame, a horizontal supporting truss, a guide rail, a lifting system, an anti-tilting device, an anti-falling device, a wall-attached support, a synchronous control system and the like. Wherein anti-tilting device, anti-falling device and wall-attached support are separately mutually matched, are fixed with building wall body by a plurality of structures, and its mounting structure is complicated, and the process is more, leads to the installation process complicated, has increased the use degree of difficulty and assemble duration.
Disclosure of Invention
The invention mainly aims to provide a falling protector for a scaffold, and aims to solve the problems of more installation procedures and high installation difficulty of a tilting prevention device, a falling prevention device and a wall-attached support.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
the falling protector for the scaffold comprises two connecting arms which are oppositely arranged, and a wall attaching support fixedly connected with the same ends of the two connecting arms, wherein the wall attaching support is used for fixing the falling protector on a building wall; a pair of roller groups are arranged on each connecting arm, two pairs of roller groups are positioned between the two connecting arms, and the two pairs of roller groups are used for enabling a guide rail of the scaffold to vertically slide between the two pairs of roller groups; a top plate and a bottom plate are arranged on the two connecting arms at intervals, the top plate and the bottom plate are fixedly connected with the two connecting arms, the top plate and the bottom plate avoid a path of the roller group for assisting the guide rail to slide, and a first opening facing the roller group is formed among the top plate, the bottom plate and the two connecting arms; two side plates are fixedly arranged between the top plate and the bottom plate, the two side plates are arranged at intervals, a second opening facing the roller group is formed between the two side plates and the bottom plate as well as between the top plate, and an anti-falling swing arm is arranged between the two side plates and penetrates through the second opening to be used for blocking a cross rod of the guide rail when the guide rail abnormally slides down; one side of the top plate, which is far away from the anti-falling swing arm, is hinged with a supporting arm, and one end of the supporting arm, which is far away from the top plate, is used for supporting the cross rod to limit the guide rail to vertically slide.
Preferably, the wall-attached support comprises two reinforcing plates and a plurality of fixing blocks which are fixedly arranged between the two reinforcing plates at intervals, and the two reinforcing plates are respectively integrally formed with the connecting arms positioned on the same side; the wall-attached support further comprises an anchor bolt and a fixing plate which are connected with each other, a connecting hole is formed in the fixing plate, the fixing plate is attached to the same side of the fixing block at least two adjacent fixing blocks, the anchor bolt is located between the fixing blocks, the anchor bolt penetrates through the connecting hole to be connected with the fixing plate, the anchor bolt penetrates through the building wall body to be fixedly connected with the double nuts, the fixing plate, the building wall body and the fixing blocks are fixedly connected, and the fixing blocks are located between the fixing plate and the building wall body.
Preferably, a spring connecting rod and a first connecting shaft penetrating through the two side plates are arranged between the two side plates at intervals, the first connecting shaft and the spring connecting rod are fixedly connected with the two side plates, the first connecting shaft is close to the roller set, and the spring connecting rod is far away from the roller set; the anti-falling swing arm comprises a cylindrical connecting part, a first blocking arm and a second blocking arm which are arranged on the circumference of the connecting part at intervals, the connecting part is sleeved on the first connecting shaft, the first blocking arm and the second blocking arm face the roller set, and the first blocking arm is used for supporting a cross rod of the guide rail to limit the guide rail sliding abnormally; one side of the connecting part, which is far away from the roller group, is provided with a spring connecting end, the spring connecting end is connected with the spring connecting rod through an extension spring, and the extension spring is used for providing resilience force for resetting the first blocking arm and the second blocking arm.
Preferably, each connecting arm is provided with an insertion through hole coaxial with the first connecting shaft, and the insertion through holes are used for connecting the first connecting shaft with the two side plates through the connecting arm.
Preferably, the first connecting shaft is parallel to the spring connecting rod, and the rotation planes of the first blocking arm and the second blocking arm are perpendicular to the first connecting shaft and the spring connecting rod.
Preferably, two coaxial bearings and a second connecting shaft are arranged on the side surface, far away from the anti-falling swing arm, of the top plate, and the second connecting shaft is fixedly connected with the two bearings; the support arm comprises a claw part, a connecting column and a hinge column which are sequentially connected, the hinge column is cylindrical, a through hole in the hinge column is stepped, the diameter of one end of the through hole in the hinge column, which is far away from the top plate, is smaller than the diameter of the other end of the through hole in the hinge column, which is close to the top plate, the connecting column is positioned in one end of the through hole in the hinge column, which is far away from the guide rail connecting support, and the connecting column is fixedly connected with the hinge column; the second connecting shaft penetrates through the other end of the hinge post, which is close to the top plate, and is in running fit with the hinge post; the claw is used for connecting one end of the guide rail is provided with a supporting end matched with the shape of the cross rod of the guide rail, a connecting cavity is formed in the claw, a connecting port is formed in the side face of the claw, which faces the connecting column, one end, away from the hinge column, of the connecting column is located in the connecting cavity through the connecting port, and the connecting column is fixedly connected with the connecting port.
Preferably, the two connecting arms are parallel to the two side plates, and the top plate and the bottom plate are perpendicular to the two connecting arms and the two side plates; the first rotating planes formed by the support arms rotating along the hinge joint of the support arms and the top plate are parallel to the two connecting arms and the two side plates.
Compared with the prior art, the invention has at least the following beneficial effects:
the supporting arm can be used for fixing the guide rail and preventing the guide rail from being inclined outwards, the anti-falling swing arm can prevent the guide rail from sliding abnormally, the roller set is used for assisting the guide rail to slide and enabling the guide rail to slide vertically, the wall attaching support is used for fixing the connecting arm on the building wall, the supporting arm, the anti-falling swing arm, the roller set and the wall attaching support are all fixed on the connecting arm to form a whole, the fixing procedure of the anti-falling device and the building wall is simplified into the mode that only the wall attaching support is required to be fixed with the building wall, and the effect of fixing the whole and the building wall can be achieved; after the roller group is connected with the guide rail, the supporting arm and the anti-falling swing arm can be connected with the guide rail inevitably, the sliding of the guide rail can be limited in an omnibearing manner, and the guide rail is fixedly connected with the scaffold, so that the camber and accidental sliding of the scaffold can be prevented, and the connecting procedure of the anti-falling device and the guide rail is simplified into the effect that the guide rail and the whole body are fixed only by connecting the roller group with the guide rail.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an embodiment of a fall arrester for a scaffold according to the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a bottom view of FIG. 1;
FIG. 4 is a right side view of FIG. 1;
FIG. 5 is a rear view of FIG. 1;
FIG. 6 is a cross-sectional view in the direction A-A of FIG. 5;
fig. 7 is a schematic view of the structure of the guide rail on the scaffold;
FIG. 8 is a schematic view of the structure of the fall arrestor and scaffold, and the wall of the building being secured;
reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 100 | Connecting arm | 110 | Roller set |
| 120 | Side plate | 121 | First connecting shaft |
| 122 | Spring connecting rod | 123 | Extension spring |
| 130 | Wall-attached support | 131 | Reinforcing plate |
| 132 | Fixed block | 140 | Top plate |
| 141 | Bearing | 142 | Second connecting shaft |
| 150 | Insertion through hole | 160 | Bottom plate |
| 200 | Anti-falling swing arm | 210 | Connecting part |
| 220 | First baffle arm | 230 | Second baffle arm |
| 240 | Spring connecting end | 300 | Support arm |
| 310 | Claw portion | 311 | Connecting cavity |
| 312 | Connection port | 320 | Connecting column |
| 330 | Hinge post | 331 | Through hole |
| 400 | Guide rail | 410 | Vertical rail |
| 420 | Cross bar |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present invention.
The invention provides a fall arrester for a scaffold.
The falling protector for scaffold shown in fig. 1 to 6 comprises two connecting arms 100 which are oppositely arranged, and a wall attaching support 130 fixedly connected with the same ends of the two connecting arms 100, wherein the wall attaching support 130 is used for fixing the falling protector on a building wall; a pair of roller groups 110 are arranged on each connecting arm 100, two pairs of roller groups 110 are positioned between the two connecting arms 100, the two pairs of roller groups 110 are used for enabling a guide rail 400 of the scaffold to vertically slide between the two pairs of roller groups 110, and the roller groups 110 are used for being in sliding connection with a vertical rail 410 on the guide rail 400; the two connecting arms 100 are provided with a top plate 140 and a bottom plate 160 at intervals, the top plate 140 and the bottom plate 160 are fixedly connected with the two connecting arms 100, the top plate 140 and the bottom plate 160 avoid a path of the roller group 110 for assisting the guide rail 400 to slide, and a first opening facing the roller group 110 is formed between the top plate 140, the bottom plate 160 and the two connecting arms 100; two side plates 120 are fixedly arranged between the top plate 140 and the bottom plate 160, the two side plates 120 are arranged at intervals, a second opening facing the roller group 110 is formed between the two side plates 120 and the top plate 140 and between the two side plates 160, the two side plates 120 are provided with anti-falling swing arms 200, and the anti-falling swing arms 200 penetrate through the second opening to be used for blocking a cross rod 420 of the guide rail 400 during abnormal sliding; the side of the top plate 140 away from the fall preventing swing arm 200 is hinged with a support arm 300, and one end of the support arm 300 away from the top plate 140 is used for supporting a cross bar 420 to limit the vertical sliding of the guide rail 400.
Referring to fig. 7, the guide rail 400 includes two vertical rails 410 and a plurality of cross bars 420 disposed between the two vertical rails 410 at intervals, all the cross bars 420 are fixedly connected with the two vertical rails 410, the distances between the adjacent cross bars 420 are equal, and the guide rail 400 slides in the roller set 110 to form a sliding plane perpendicular to a horizontal plane. The vertical rail 410 is a square steel tube, and the cross bar 420 is a round steel tube. The vertical rail 410 is a square steel pipe, so that the contact area between the roller set 110 and the vertical rail 410 is larger, the better auxiliary guide rail 400 slides, and the function of preventing camber is also achieved.
The support arm 300 can be used for fixing the guide rail 400 and preventing the camber of the guide rail 400, the anti-falling swing arm 200 can prevent the guide rail 400 from sliding abnormally, the roller group 110 is used for assisting the guide rail 400 to slide and enabling the guide rail 400 to slide vertically, the wall attaching support 130 is used for fixing the connecting arm 100 on a building wall, the support arm 300, the anti-falling swing arm 200, the roller group 110 and the wall attaching support 130 are all fixed on the connecting arm 100 to form a whole, and the fixing procedure of the anti-falling device and the building wall is simplified into the effect of fixing the whole and the building wall only by fixing the wall attaching support 130 with the building wall. After the roller group 110 is connected with the guide rail 400, the supporting arm 300 and the anti-falling swing arm 200 can be necessarily connected with the guide rail 400, so that the sliding of the guide rail 400 can be limited in an omnibearing manner, and the connecting procedure of the anti-falling device and the guide rail 400 is simplified into the effect that the guide rail 400 and the whole fixing can be achieved only by connecting the roller group 110 with the guide rail 400.
The wall-attached support 130 comprises two reinforcing plates 131 and a plurality of fixing blocks 132 which are fixedly arranged between the two reinforcing plates 131 at intervals, and the two reinforcing plates 131 are respectively integrally formed with the connecting arm 100 positioned on the same side; the wall-attached support 130 further comprises an anchor bolt and a fixing plate which are connected with each other, wherein the fixing plate is provided with a connecting hole, and the fixing plate is attached to the same side of any two adjacent fixing blocks 132; the anchor bolts are located between any two adjacent fixed blocks 132, when the anchor bolts pass through the connecting holes to be connected with the fixed plates, and the anchor bolts pass through the building wall to be fixedly connected with the double nuts, the fixed plates, the building wall and the fixed blocks 132 are fixedly connected, and the fixed blocks 132 are located between the fixed plates and the building wall. The fixing structure is simple, the fixing strength is high, the fixing procedure is simple, the anchoring bolts only need to pass through the fixing plates, the interval between any two fixing blocks 132 and the building wall body in sequence, and then the fixing bolts are fastened through double nuts,
the anchor bolt is the stud, and the stud both ends all set up two at least or more nuts and are used for fastening. The use of stud and multiple nuts makes assembly more convenient, and multiple nuts cooperate for use, guarantees that the connection of wall attachment support 130 and the building wall is more firm.
A spring connecting rod 122 and a first connecting shaft 121 penetrating through the two side plates 120 are arranged between the two side plates 120 at intervals, the spring connecting rod 122 and the first connecting shaft 121 are fixedly connected with the two side plates 120, the first connecting shaft 121 is arranged close to the roller group 110, and the spring connecting rod 122 is arranged far away from the roller group 110; the anti-falling swing arm 200 comprises a cylindrical connecting part 210, a first blocking arm 220 and a second blocking arm 230 which are arranged at intervals on the circumference of the connecting part 210, the connecting part 210 is sleeved on the first connecting shaft 121, the first blocking arm 220 and the second blocking arm 230 face the roller group 110, and the first blocking arm 220 is used for supporting a rail 400 for limiting abnormal sliding by a cross rod 420; the connecting portion 210 is provided with a spring connecting end 240 at a side far from the roller set 110, the spring connecting end 240 and the spring connecting rod 122 are connected through an extension spring 123, and the extension spring 123 is used for providing a resilience force for resetting the first blocking arm 220 and the second blocking arm 230. When the connecting arm 100 supports the cross bar 420 and limits the movement of the guide rail 400, a first preset interval is reserved between the first blocking arm 220 and the guide rail 400, the second blocking arm 230 passes through the sliding plane of the guide rail 400, and the tension spring 123 is in an unstretched state; when the guide rail 400 slides abnormally on the roller group 110, the first blocking arm 220 passes through and is perpendicular to the sliding plane of the guide rail 400, the first blocking arm 220 supports the corresponding cross rod 420 to limit abnormal movement of the guide rail 400, a second preset interval is reserved between the second blocking arm 230 and the guide rail 400, and the tension spring 123 is in a tension state; when the guide rail 400 slides up and down normally, the plurality of cross bars 420 on the guide rail 400 push the second blocking arm 230 to be separated from the second blocking arm 230 in sequence, the second blocking arm 230 is pushed by the cross bars 420, the first blocking arm 220 rotates together with the second blocking arm 230, and the separating connecting part 210 of the cross bars 420 and the second blocking arm 230 is subjected to the resilience force of the tension spring 123, so that the first blocking arm 220 and the second blocking arm 230 are reset, and the above steps are repeated. When the guide rail 400 is normally slid up and down, the first blocking arm 220 does not contact the guide rail 400.
Each connecting arm 100 is provided with an insertion through hole 150 coaxial with the first connecting shaft 121, and the insertion through hole 150 is used for connecting the first connecting shaft 121 with the two side plates 120 through the connecting arm 100. The insertion through hole 150 can facilitate the insertion of the first connecting shaft 121, and the length of the first connecting shaft 121 and the size of the mounting case 120 are not limited, and if the mounting case 120 is enlarged, the first blocking arm 220 and the second blocking arm 230 moving in the mounting case 120 are also enlarged, and the contact area between the first blocking arm 220 and the cross bar 420 is also enlarged, so that the first blocking arm 220 can be prevented from being too small, the first blocking arm 220 is directly broken when the guide rail 400 slides abnormally, and the width of the first blocking arm 220 and the second blocking arm 230 is smaller than the length of the cross bar 420.
The first connecting shaft 121 and the spring connecting rod 122 are parallel, and the second rotation planes of the first blocking arm 220 and the second blocking arm 230 are perpendicular to the first connecting shaft 121 and the spring connecting rod 122. This simplifies and accurately calculates the return force of the tension spring 123, and facilitates the first blocking arm 220 blocking the guide rail 400 from being abnormally slipped off.
The side surface of the top plate 140, which is far away from the anti-falling swing arm, is provided with two coaxial bearings 141 and a second connecting shaft 142, and the second connecting shaft 142 is fixedly connected with the two bearings 141; the supporting arm 300 comprises a claw 310, a connecting column 320 and a hinging column 330 which are sequentially connected, the hinging column 330 is cylindrical, a through hole 331 in the hinging column 330 is stepped, the diameter of one end, far away from the top plate 140, of the through hole 331 in the hinging column 330 is smaller than the diameter of the other end, close to the top plate 140, of the through hole 331 in the hinging column 330, the connecting column 320 is positioned in one end, far away from the guide rail 400, of the connecting support, of the through hole 331 in the hinging column 330, and the connecting column 320 is fixedly connected with the hinging column 330; the second connecting shaft 142 penetrates through the other end of the hinge post 330 close to the top plate 140, and the second connecting shaft 142 is in running fit with the hinge post 330; the claw portion 310 is used for connecting the support end that is provided with and cross-bar 420 appearance complex of one end of guide rail 400, and claw portion 310 inside is provided with the connection cavity 311, and is provided with connector 312 on the side that claw portion 310 faced spliced pole 320, and the one end that spliced pole 320 kept away from articulated pole 330 is located in connection cavity 311 through connector 312, and spliced pole 320 and connector 312 fixed connection. When the slide rail moves to a designated position, the claw 310 is connected with the nearest cross bar 420 on the guide rail 400 to limit the movement of the guide rail 400, so that the fixing device does not need to be specially prepared for limiting the movement of the guide rail 400.
The two connecting arms 100 are parallel to the two side plates 120, and the top plate 140 and the bottom plate 160 are perpendicular to the two connecting arms 100 and the two side plates 120; the first rotation plane formed by the rotation of the support arm 300 along the hinge joint of the support arm 300 and the top plate 140 is parallel to the two connecting arms 100 and the two side plates 120. The connection of the two connecting arms 100, the top plate 140 and the bottom plate 160 is more in line with the parallel connection of the two side plates 120 and the connection of the two connecting arms 100, so that the strength of the whole structure of the safety hook is enhanced. The first rotation plane of the support arm 300 is perpendicular to the sliding plane of the guide rail 400, so that the support arm 300 can support the guide rail 400 with a minimum force.
The two connecting arms 100 are arranged opposite to each other, the two side plates 120 are arranged opposite to each other, and the bottom plate 160 and the top plate 140 are arranged opposite to each other. The intensity of the whole structure of the anti-falling device is enhanced, and the occupation of the space area is structurally reduced.
Referring to fig. 8, the process of fitting the fall arrester and the scaffold is as follows;
a plurality of falling protectors are vertically arranged on a building wall, a certain interval is reserved between every two falling protectors, roller sets 110 of the falling protectors are respectively connected with vertical rails 410, a scaffold vertically slides up and down through lifting device control guide rails 400, when the construction of the building wall at the bottommost end of the scaffold is finished, the lifting device control guide rails 400 move upwards through pulley blocks, meanwhile, a user installs the falling protectors at the uppermost end of the scaffold, the vertical rails 410 enter the roller sets 110 of the installed falling protectors and leave the falling protector at the bottommost end of the scaffold, supporting arms 300 of the falling protectors are connected with corresponding transverse rods 420, the scaffold is stopped after being lifted for a certain distance, and the construction is repeated until the construction is finished. In the same way, the descending process is also as above, and the lifting device is started only by installing the falling protector at the lowest end of the scaffold.
During normal ascent or descent of the rail 400, the second blocking arm 230 of each fall arrester is constantly in contact with the corresponding rail 420, but the second blocking arm 230 does not affect ascent or descent of the rail 400, when the rail 400 is abnormally slid down, the first blocking arm 220 of each fall arrester supports the corresponding rail 420, and the rail 400 is restricted from continuing to descend.
The foregoing description of the preferred embodiments of the present invention should not be construed as limiting the scope of the invention, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the following description and drawings or any application directly or indirectly to other relevant art(s).
Claims (5)
1. The falling protector for the scaffold is characterized by comprising two connecting arms which are oppositely arranged, and a wall attaching support fixedly connected with the same ends of the two connecting arms, wherein the wall attaching support is used for fixing the falling protector on a building wall; a pair of roller groups are arranged on each connecting arm, two pairs of roller groups are positioned between the two connecting arms, and the two pairs of roller groups are used for enabling a guide rail of the scaffold to vertically slide between the two pairs of roller groups; a top plate and a bottom plate are arranged on the two connecting arms at intervals, the top plate and the bottom plate are fixedly connected with the two connecting arms, the top plate and the bottom plate avoid a path of the roller group for assisting the guide rail to slide, and a first opening facing the roller group is formed among the top plate, the bottom plate and the two connecting arms; two side plates are fixedly arranged between the top plate and the bottom plate, the two side plates are arranged at intervals, a second opening facing the roller group is formed between the two side plates and the bottom plate as well as between the top plate, and an anti-falling swing arm is arranged between the two side plates and penetrates through the second opening to be used for blocking a cross rod of the guide rail when the guide rail abnormally slides down; one side, far away from the anti-falling swing arm, of the top plate is hinged with a supporting arm, and one end, far away from the top plate, of the supporting arm is used for supporting the cross rod to limit the guide rail to vertically slide; a spring connecting rod and a first connecting shaft which penetrates through the two side plates are arranged between the two side plates at intervals, the first connecting shaft and the spring connecting rod are fixedly connected with the two side plates, the first connecting shaft is close to the roller set, and the spring connecting rod is far away from the roller set; the anti-falling swing arm comprises a cylindrical connecting part, a first blocking arm and a second blocking arm which are arranged on the circumference of the connecting part at intervals, the connecting part is sleeved on the first connecting shaft, the first blocking arm and the second blocking arm face the roller set, and the first blocking arm is used for supporting a cross rod of the guide rail to limit the guide rail sliding abnormally; the connecting part is provided with a spring connecting end at one side far away from the roller group, the spring connecting end is connected with the spring connecting rod through an extension spring, and the extension spring is used for providing resilience force for resetting the first blocking arm and the second blocking arm; the wall-attached support comprises two reinforcing plates and a plurality of fixing blocks which are fixedly arranged between the two reinforcing plates at intervals, and the two reinforcing plates are respectively integrally formed with the connecting arms positioned on the same side; the wall-attached support further comprises an anchor bolt and a fixing plate which are connected with each other, a connecting hole is formed in the fixing plate, the fixing plate is attached to the same side of the fixing block at least two adjacent fixing blocks, the anchor bolt is located between the fixing blocks, the anchor bolt penetrates through the connecting hole to be connected with the fixing plate, the anchor bolt penetrates through the building wall body to be fixedly connected with the double nuts, the fixing plate, the building wall body and the fixing blocks are fixedly connected, and the fixing blocks are located between the fixing plate and the building wall body.
2. The fall arrester for scaffold according to claim 1, wherein each of the connecting arms is provided with an insertion through hole coaxial with the first connecting shaft, the insertion through hole being used for connecting the first connecting shaft with two side plates through the connecting arm.
3. The fall arrestor for scaffolding as claimed in claim 2 wherein the first connection shaft and the spring connection rod are parallel and the plane of rotation of the first and second stop arms is perpendicular to the first connection shaft and the spring connection rod.
4. The fall arrester for scaffold according to claim 1, wherein two coaxial bearings and a second connecting shaft are provided on the side surface of the top plate away from the fall arrester swing arm, and the second connecting shaft is fixedly connected with the two bearings; the support arm comprises a claw part, a connecting column and a hinge column which are sequentially connected, the hinge column is cylindrical, a through hole in the hinge column is stepped, the diameter of one end of the through hole in the hinge column, which is far away from the top plate, is smaller than the diameter of the other end of the through hole in the hinge column, which is close to the top plate, the connecting column is positioned in one end of the through hole in the hinge column, which is far away from the guide rail connecting support, and the connecting column is fixedly connected with the hinge column; the second connecting shaft penetrates through the other end of the hinge post, which is close to the top plate, and is in running fit with the hinge post; the claw is used for connecting one end of the guide rail is provided with a supporting end matched with the shape of the cross rod of the guide rail, a connecting cavity is formed in the claw, a connecting port is formed in the side face of the claw, which faces the connecting column, one end, away from the hinge column, of the connecting column is located in the connecting cavity through the connecting port, and the connecting column is fixedly connected with the connecting port.
5. The fall arrestor for scaffolding as claimed in any one of claims 1 to 4 wherein two of the connecting arms are parallel to two of the side plates and the top and bottom plates are perpendicular to both of the connecting arms and the side plates; the first rotating planes formed by the support arms rotating along the hinge joint of the support arms and the top plate are parallel to the two connecting arms and the two side plates.
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| CN201910445097.XA CN110067377B (en) | 2019-05-27 | 2019-05-27 | Falling protector for scaffold |
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| CN201910445097.XA CN110067377B (en) | 2019-05-27 | 2019-05-27 | Falling protector for scaffold |
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| CN110067377A CN110067377A (en) | 2019-07-30 |
| CN110067377B true CN110067377B (en) | 2024-04-02 |
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| CN110067377A (en) | 2019-07-30 |
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