Anti-falling tool type scaffold
Technical Field
The invention relates to the technical field of scaffolds, in particular to a falling-prevention tool type scaffold.
Background
At present, the main domestic tool type scaffolds at home and abroad mainly comprise two types: one is the attached lifting scaffold for building structure construction. The basic principle of the device is that a frame body and a guide rail are connected into a whole and are attached to a building structure through an attachment support, and unloading, anti-tilting, guiding and anti-falling devices are arranged on the attachment support. The frame body is stressed at the bottom of the frame body through power equipment so as to vertically move up and down; the other one is electronic hanging flower basket for building decoration, and its theory of operation is that be equipped with the device of encorbelmenting at building structure top, the device of encorbelmenting is fixed at building structure top plane through the counter weight of certain weight, and the hanging flower basket passes through wire rope to be fixed on the device of encorbelmenting, relies on power equipment to go up and down.
However, the electric hanging basket is fixed on the overhanging device through a steel wire rope, so that the stability is extremely poor, and a large number of casualty accidents occur every year. In the traditional attached lifting scaffold, the scaffold body is stressed at the bottom, and extremely high requirements are provided for the deflection resistance and the stability of a stress rod piece of a vertical structure of the scaffold body and a truss system, so that the traditional attached lifting scaffold has high requirements on materials, and the material cost, the production cost and the management and use cost of the scaffold body are increased; and the anti-falling devices on the upper and lower attachment supports interfere with each other under the influence of the upper and lower installation accuracy of the attachment supports, the operating speed of the power equipment and the load values of all the machine positions, so that the blocking occurs in the descending process of the frame body, the anti-falling devices cannot operate reliably, and great hidden dangers exist.
Disclosure of Invention
The invention aims to provide a falling-preventing tool type scaffold, which can realize reliable falling prevention in an ascending or descending process by arranging a falling-preventing assembly.
In order to achieve the purpose, the invention provides the following technical scheme: a fall-preventing tool type scaffold comprises a guide truss arranged outside a support column and a fall-preventing assembly arranged between the support column and the guide truss, the guide truss is fixedly connected with the scaffold frame body, the guide truss is connected with the support column in a sliding way, the support column is fixedly arranged on the building main body through a mounting support, the anti-falling assembly comprises a blocking device and a trigger, the trigger is arranged on the guide truss, the blocking device comprises a sliding telescopic rod which horizontally penetrates through the supporting column, an elastic component is arranged on the sliding telescopic rod, when the trigger moves vertically along with the guide truss, the trigger can trigger the elastic component to compress or release and drive the sliding telescopic rod to move horizontally, the blocking device also comprises a blocking component, and the locking device is used for locking the guide truss when the guide truss falls at a speed higher than the releasing speed of the elastic component.
Preferably, the elastic component is a spring, the elastic component is sleeved at one end of the sliding telescopic rod, a first hole matched with the sliding telescopic rod is formed in the supporting column, and the diameter of the first hole is smaller than the inner diameter of the elastic component.
Preferably, one end of the sliding telescopic rod, which is sleeved with the elastic component, is connected with a first pulley, the external circle radius of the first pulley is larger than the inner diameter of the elastic component, and when the sliding telescopic rod reciprocates in the first hole, the elastic component is compressed or released.
Preferably, the stop assembly comprises a limiting plate and a blocking cross rod, the limiting plate is mounted on the sliding telescopic rod and is far away from one end of the first pulley, the blocking cross rod is fixedly mounted on the guide truss, the blocking cross rod is matched with the limiting plate, and when the guide truss falls at a speed higher than the releasing speed of the elastic component, the blocking cross rod and the limiting plate are in a locking state.
When the guide truss normally goes upwards or downwards along the vertical direction, the clamping cross rods and the limiting plates do not interfere with each other.
Preferably, the limiting plate is of a triangular structure, one side of the limiting plate, which is in contact with the blocking cross rod, is an inclined plane, and the limiting plate and the trigger are respectively arranged on two sides of the sliding telescopic rod.
Preferably, the trigger includes first swash plate and the second swash plate that interconnect becomes the acute angle, first swash plate sets up in the one side that is close to the card and hinders the horizontal pole, just the contained angle of first swash plate and horizontal plane is less than the contained angle of second swash plate and horizontal plane.
Preferably, the first sloping plate is kept away from the one end that is connected with the second sloping plate and is connected with the guide truss is articulated, the limiting plate with the first interval is reserved to the card group horizontal pole.
Preferably, the anti-falling assembly is provided with a plurality of groups, and is uniformly arranged between the guide truss and the support column along the vertical direction.
Preferably, the top of the guide truss is provided with a connecting part connected with a lifting power system, and the lifting power system is used for driving the guide truss to move up and down along the support column.
Preferably, the guide truss is installed around the periphery of the support column in an encircling manner.
Compared with the prior art, the invention has the beneficial effects that:
according to the anti-falling tool type scaffold provided by the invention, the anti-falling assembly is arranged between the support column and the guide truss, the sliding telescopic rod penetrates through two sides of the support column, the sliding telescopic rod is ingeniously driven to horizontally move through the trigger, the guide truss is locked when falling at a speed higher than the release speed of the elastic component by utilizing the time difference between the spring recovery process and the guide truss falling process, and the clamping group cross rod and the limiting plate do not interfere with each other when the guide truss normally moves upwards or falls along the vertical direction, so that the reliable anti-falling of the guide truss in the ascending or falling process is realized.
Drawings
FIG. 1 is a schematic structural view of a fall-prevention tool-type scaffold in which a support column is connected with a building body;
fig. 2 is a schematic view of an overall installation structure of a falling prevention tool type scaffold of the present invention;
FIG. 3 is a schematic structural view of a guide truss in the anti-falling tool type scaffold according to the present invention;
fig. 4 is a schematic front view of a guide truss in the anti-falling tool type scaffold according to the present invention.
In the figure: 1. a support pillar; 101. a guide wheel; 2. a guide truss; 201. blocking the cross rod; 3. a fall arrest assembly; 31. a jamming device; 3101. sliding the telescopic rod; 3102. an elastic member; 3103. a first pulley; 3104. A limiting plate; 32. a trigger; 3201. a first sloping plate; 3202. a second swash plate; 3203. a return spring; 4. mounting a support; 5. a connecting portion; 6. a building body.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment provided by the invention is as follows:
fig. 1 shows, a prevent instrument formula scaffold frame that falls, support column 1 pass through erection support 4 fixed mounting on building subject 6, as the safeguard system, even prevent that the subassembly 3 is out of order, guide truss 2 also can fall on erection support 4 to at last interrupt the falling of guide truss 2 support body, realize that the support body never falls.
As shown in fig. 2, the anti-falling tool type scaffold comprises a guide truss 2 installed outside a support column 1 and an anti-falling assembly 3 installed between the support column 1 and the guide truss 2, the guide truss 2 is fixedly connected with a scaffold body, the guide truss 2 is slidably connected with the support column 1, the support column 1 is fixedly installed on a building body 6 through an installation support 4, the anti-falling assembly 3 comprises a blocking device 31 and a trigger 32, the trigger 32 is installed on the guide truss 2, the blocking device 31 comprises a sliding telescopic rod 3101 horizontally penetrating through the support column 1, an elastic component 3102 is arranged on the sliding telescopic rod 3101, when the trigger 32 vertically moves along with the guide truss 2, the elastic component 3102 is triggered to compress or release, and simultaneously the sliding telescopic rod 3101 is driven to horizontally move, the blocking device 31 further comprises a blocking component, for locking the guided girder 2 when the guided girder 2 falls at a speed greater than the release speed of the elastic member 3102. The top of the support column 1 has a certain distance with the top of the guide truss 2, and the lifting power system is installed on the top of the support column 1 and is arranged at the top of the guide truss 2 at the stress point of the hanging rack system. The guide truss 2 is vertically moved by the pulling force of the lifting power system. The system has the advantages that the requirements of the stress mode of the system on the deflection resistance and the structural stability of the guide truss 2 are reduced, and only the tensile strength of the guide truss 2 meets the requirements, so that the material cost of the guide truss 2 is reduced, and the safety is higher.
As shown in fig. 3 and 4, in the structural schematic view of the guiding truss 2, the elastic member 3102 is a spring, the elastic member 3102 is sleeved at one end of the sliding telescopic rod 3101, the supporting column 1 is provided with a first hole matched with the sliding telescopic rod 3101, and the diameter of the first hole is smaller than the inner diameter of the elastic member 3102. One end of the sliding telescopic rod 3101, which is sleeved with the elastic component 3102, is connected with a first pulley 3103, the circumscribed circle radius of the first pulley 3103 is larger than the inner diameter of the elastic component 3102, and when the sliding telescopic rod 3101 reciprocates in the first hole, the elastic component 3102 is compressed or released. The stop assembly comprises a limiting plate 3104 arranged on the sliding telescopic rod 3101 and far away from one end of the first pulley 3103, and a blocking cross rod 201 fixedly arranged on the guide truss 2, wherein the blocking cross rod 201 is matched with the limiting plate 3104, and when the guide truss 2 falls at a speed higher than the release speed of the elastic component 3102, the blocking cross rod 201 and the limiting plate 3104 are in a locking state. When the guide truss 2 normally moves upwards or downwards along the vertical direction, the clamping cross rods and the limiting plate 3104 do not interfere with each other.
Preferably, the limiting plate 3104 is a triangular structure, one side of the limiting plate 3104 contacting the blocking cross bar 201 is an inclined surface, the limiting plate 3104 and the trigger 32 are respectively arranged at two sides of the sliding telescopic rod 3101, and the blocking cross bar 201 is arranged above the trigger 32. The trigger 32 includes a first inclined plate 3201 and a second inclined plate 3202 that are connected to each other to form an acute angle, the first inclined plate 3201 is disposed on a side close to the blocking cross bar 201 in the vertical direction, and an included angle between the first inclined plate 3201 and the horizontal plane is smaller than an included angle between the second inclined plate 3202 and the horizontal plane. The first sloping plate 3201 is hinged with the guide truss 2 far away from the end connected with the second sloping plate 3202, a return spring 3203 is arranged at the hinged position of the first sloping plate 3201 and the second sloping plate 3202, a partition plate 3204 vertical to the first sloping plate 3201 and the second sloping plate 3202 is arranged between the first sloping plate 3201 and the second sloping plate 3202, a rotating shaft in hinged connection penetrates through the partition plate 3204 and is rotatably connected with the guide truss 2, the return spring 3203 comprises two springs which are sleeved on the rotating shaft and are respectively arranged at two sides of the partition plate 3204, when the guide truss 2 ascends to the sliding telescopic rod 3101, under the action of the first pulley 3103, the first sloping plate 3201 and the second sloping plate 3202 are turned downwards around the hinge point, and when the guiding truss 2 continues to rise until the corresponding trigger 32 is higher than the corresponding sliding telescopic rod 3101, the first sloping plate 3201 and the second sloping plate 3202 return to the original positions under the action of the return spring 3203, and a first interval is reserved between the limiting plate 3104 and the clamping group cross rod. The first interval is set to avoid being blocked by the stopping plate 3104 when the guide girder 2 is normally moved upward.
Preferably, the anti-falling assemblies 3 are provided with a plurality of groups and are uniformly arranged between the guide truss 2 and the support column 1 along the vertical direction. The specific number and spacing may be specifically set according to the height of the guide girders 2.
Preferably, the top of the guide truss 2 is provided with a connecting part 5 connected with a lifting power system, and the lifting power system is used for driving the guide truss 2 to move up and down along the support column 1.
Preferably, the guide truss 2 is completely installed around the support column 1, and is more reliable than a semi-hoop type structure as in the prior art, and the slipping does not occur. During installation, the guide truss 2 and the support column 1 are two separated structures, so that installation between the guide truss 2 and the support column 1 can be completed only by sleeving the guide truss 2 on the periphery of the support column 1 from the top of the support column 1.
The working principle is as follows: during installation, the anti-falling tool type scaffold is installed between the support column 1 and the guide truss 2 through the anti-falling assembly, and the sliding telescopic rod 3101 is utilized to run through two sides of the support column 1, the sliding telescopic rod 3101 is ingeniously driven to move horizontally by the trigger 32, when the scaffold body suddenly falls, the anti-falling tool is influenced by gravity, the guide truss 2 vertically falls, the elastic component 3102 cannot be timely reset, so that the clamping cross rod 201 is clamped on the limiting plate 3104 of the sliding telescopic rod 3101, the anti-falling function is realized, therefore, the time difference between the spring recovery process and the falling process of the guide truss 2 can be utilized to lock the guide truss 2, and when the guide truss 2 normally goes upward or falls along the vertical direction, the clamping cross rod and the limiting plate 3104 do not interfere with each other, and the reliable anti-falling of the guide truss 2 in the upward or falling process is realized.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.