CN215889312U - External scaffold demolishs operation device - Google Patents

Abstract

The utility model relates to an external scaffold dismantling operation device which comprises an operation platform and an I-steel clamp, wherein the operation platform is provided with an inner side guardrail and an outer side guardrail, the I-steel clamp used for fixing the platform is arranged on the inner side guardrail and/or the outer side guardrail, the I-steel clamp used for fixing and suspending a scaffold is connected with a workpiece lifting rope, the I-steel clamp comprises a first clamping jaw and a second clamping jaw, the first clamping jaw and the second clamping jaw are hinged to each other to form a clamp-type structure, a first concave structure used for corresponding to an I-steel flange plate and a first flat end surface corresponding to the side surface of an I-steel web plate are arranged on the inner side surface of the claw part of the first clamping jaw, and a second concave structure used for corresponding to the I-steel flange plate and a second flat end surface corresponding to the side surface of the I-steel web plate are arranged on the inner side surface of the claw part of the second clamping jaw. The utility model is safe and convenient, and can be mainly used for the dismantling operation of the novel flower basket cantilever frame.

Description

External scaffold demolishs operation device

Technical Field

The utility model relates to a dismantling operation device of an external scaffold for building construction, which is mainly used for dismantling operation of a novel flower basket cantilever frame, in particular to dismantling operation of an I-shaped steel beam.

Background

The novel flower basket cantilever frame is widely used for the bearing structure of outer wall scaffold engineering, and to the construction of high-rise structure main body project, it is the trend to use novel flower basket cantilever frame to replace traditional cantilever frame. However, although the novel flower basket cantilever frame has absolute price advantage with the traditional cantilever frame from the aspect of raw material cost, the constructors and the construction units using the novel cantilever frame project generally reflect that the novel cantilever frame is very inconvenient and unsafe when being dismantled. The existing method for removing section steel (I-shaped steel) of a flower basket cantilever frame mainly depends on rope binding and then is removed in a hanging mode by people, the whole process has great potential safety hazards, and due to the limitation of hanging operation conditions, the I-shaped steel binding not only wastes time and labor, but also is not easy to bind firmly, namely unsafe, low in working efficiency, large in construction difficulty and high in frame removal cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the above-mentioned defect of prior art, provides a high outer scaffold frame of convenient to use and security demolishs operation device.

The technical scheme of the utility model is as follows: the outer scaffold dismantling device comprises an operation platform and I-steel clamps, wherein the operation platform can adopt an aerial work hanging basket and is provided with guardrails, each guardrail comprises an inner guardrail and an outer guardrail, each I-steel clamp comprises an I-steel clamp used for fixing the platform and an I-steel clamp used for fixing and suspending a scaffold (or called a cantilever beam), the I-steel clamps used for fixing the platform and the I-steel clamps used for fixing and suspending the scaffold are the same in structure, the I-steel clamps used for fixing the platform are arranged on the inner guardrail and/or the outer guardrail, the I-steel clamps are usually in multiple numbers and are respectively arranged on the inner guardrail and the outer guardrail so as to be beneficial to the stability of the operation platform, the I-steel clamps used for fixing and suspending the scaffold are connected with workpiece lifting ropes, and the workpiece lifting ropes can adopt steel wire ropes or other rope-shaped objects with corresponding strength and purposes, the I-steel anchor clamps include first jack catch and second jack catch, first jack catch and second jack catch are articulated each other, form the jaw type structure, the medial surface of the claw of first jack catch is equipped with and is used for the first concave structure that corresponds with the I-steel flange board and the first flat terminal surface that corresponds with I-steel web side, the medial surface of the claw of second jack catch is equipped with and is used for the second concave structure that corresponds with the I-steel flange board and the second flat terminal surface that corresponds with the I-steel web side.

Preferably, the I-shaped steel clamp for fixing the platform is detachably mounted on the guardrail.

Preferably, the i-steel clamps for fixing the platform are divided into a plurality of groups, for example, two or three groups, each group is two, and the i-steel clamps are respectively installed at corresponding positions of the inner side guardrail and the outer side guardrail.

Generally, the length of the h-beam used as a scaffold extending outside the wall is greater than the width of the work platform, or the width of the work platform is selected to be less than the length of the h-beam used as a scaffold extending outside the wall, so that corresponding h-beam clamps mounted on the inboard side rail and the outboard side rail can be clamped to the same scaffold.

Similarly, the distance between adjacent I-steel clamps on the inner side guardrail or the outer side guardrail is an integral multiple of the distance between the outriggers on the wall body, including one or more times, so as to respectively clamp different outriggers.

When the device is used, the installation position of the I-shaped steel clamp on the guardrail can be adjusted according to the space or the distribution condition of the cantilever frames.

The number of the I-steel clamps used for fixing and suspending the cantilever is at least two, the two I-steel clamps can be clamped on the I-steel cantilever to be disassembled generally, a space is reserved between the clamping parts of the two I-steel clamps, and the gravity center of the I-steel cantilever is basically located in the middle of the clamping parts of the two I-steel clamps, so that the condition that the I-steel is stressed unevenly to cause inclination or instability when suspended is avoided.

The operation platform can be connected with the platform lifting rope, the quantity of platform lifting rope is a plurality of, can connect respectively near the platform four corners usually to do benefit to the stability that the platform hung in midair.

The platform lifting rope can be connected with a platform suspension power mechanism, and the platform suspension power mechanism can comprise a motor (or other prime movers) and a lifting rope winding mechanism driven by the motor (or other prime movers) so as to realize the suspension and lifting of the operation platform.

Preferably, a major portion of the curved surface of the hinge side of the first concave structure is planar, and the plane of the curved surface of the hinge side of the first concave structure is perpendicular to the plane of the first flat end surface.

Preferably, the number of the first clamping jaws is two, the main body parts of the two first clamping jaws are bilaterally symmetrical and fixedly connected with each other, a space is reserved between the two first clamping jaws, and the second clamping jaw is positioned between the two first clamping jaws.

Preferably, a transverse sleeve is arranged between the two first clamping jaws, the axis of the sleeve is positioned on the hinge axis, the sleeve is composed of an inner pipe and an outer pipe which are in clearance fit, two ends of the inner pipe are respectively and fixedly connected to the first clamping jaws on the corresponding sides, the length of the outer pipe is smaller than the width of a gap between the two first clamping jaws, a hinge hole is formed in the second clamping jaw, and the outer pipe penetrates through the hinge hole of the second clamping jaw and is fixedly connected with the second clamping jaw; or, set up fixed articulated shaft between two first jack catchs, the second jack catch passes through bearing swivelling joint and is in on the articulated shaft, the inner circle fixed sleeve of bearing is established on the articulated shaft, the second jack catch is established through its bearing mounting hole fixed sleeve on the outer lane of bearing.

Preferably, a clamping state locking mechanism for fixing the clamping state is arranged between the first jaw and the second jaw.

Preferably, a 90-degree forward limiting mechanism for preventing forward rotation in a 90-degree open state is arranged between the first jaw and the second jaw.

Preferably, a 90-degree reverse limiting mechanism for preventing reverse rotation in a 90-degree opening state is arranged between the first jaw and the second jaw.

Preferably, the handle part of the second claw part is provided with a handle which is a long handle.

Preferably, the upper end of the handle part of one or two of the first claws is provided with an inverted U-shaped hook.

Preferably, symmetrical hook through holes are formed in two side walls of the hook, and hook closing bolts penetrate through the symmetrically arranged hook through holes and are fastened on the hook through nuts.

The I-shaped steel clamp for fixing the platform is installed on the guardrail through the hook, and the corresponding cross rod on the guardrail penetrates through a closed space formed by the hook and the hook closing bolt so as to realize the installation of the I-shaped steel clamp on the guardrail. When the guardrail is used, the hook can be hung on the proper position of the proper cross rod on the guardrail, and then the hook closing bolt is installed and fixed on the hook.

The workpiece lifting rope is fixed on the hook in a connection mode on the I-shaped steel clamp for fixing and suspending the scaffold. When the hook is used, the hook sealing bolt can be firstly installed and fixed on the hook, then the corresponding end of the workpiece lifting rope is fixed on the hook, or the corresponding end of the workpiece lifting rope can be fixed on the hook, and then the hook sealing bolt is installed and fixed on the hook.

The safe operation platform is arranged, and the operation platform can be fixed on the I-steel cantilever frame on the wall body through the corresponding I-steel clamp during operation, so that a safe and stable operation space is provided for operation personnel; during operation, the corresponding I-steel clamp is fixedly clamped on the scaffold to be detached, the tightness degree of the lifting rope is properly controlled, the lifting rope can stably lift the detached scaffold when the scaffold is detached from a wall body, upper-layer related personnel lift the detached scaffold to a proper position through the lifting rope and the lifting device, operation is facilitated, and operation safety is improved. The special I-shaped steel clamp with the clamp-type structure formed by the two clamping jaws clamps or releases I-shaped steel through relative rotation of the two clamping jaws, the corresponding positioning insertion holes are formed in the proper positions, and after the clamping or releasing, the clamp can be fixed in a clamping or opening state only by inserting the positioning bolts or the positioning columns into the corresponding positioning insertion holes, so that the special I-shaped steel clamp is greatly convenient to use, consumes less time and is high in reliability.

Drawings

Fig. 1 is a schematic view of a working device in a use state;

FIG. 2 is a schematic view of the clamp in a state of clamping an I-beam;

FIG. 3 is a schematic view of the clamp in an expanded I-beam condition;

FIG. 4 is a schematic view of a first jaw;

FIG. 5 is a schematic view of a second jaw;

FIG. 6 is a side view of the clip being snapped onto the armrest (cross-member);

FIG. 7 is a schematic view of another embodiment of the first jaw.

Detailed Description

Referring to fig. 1 to 7, the external scaffolding dismantling device according to the present invention includes a work platform 60 provided with a guardrail including an inner guardrail 68 and an outer guardrail 69, and an i-steel jig including an i-steel jig 61 for platform fixing and an i-steel jig 63 for scaffold fixing and suspending, the i-steel jig for platform fixing and the i-steel jig for scaffold fixing and suspending having the same structure, the i-steel jig for platform fixing being installed on the inner guardrail and/or the outer guardrail with a claw portion (portion for holding i-steel) extending to a lower side of the platform, the corresponding i-steel jig being in a position capable of holding the corresponding i-steel when the platform is supported on the i-steel scaffold, the i-steel jig for scaffold fixing and suspending being connected with a workpiece hanging rope 64, the I-steel clamp is used for clamping and fixing I-steel 80 and comprises a first jaw 10 and a second jaw 30, from the practical use angle, the first jaw can be regarded as a fixed jaw, the second jaw can be regarded as a movable jaw, the first jaw and the second jaw are hinged through a hinge 51 in any suitable mode and the like to form a jaw structure, a part for clamping a workpiece side can be regarded as a jaw part of the jaw, a part far away from the workpiece can be regarded as a handle part of the jaw, the inner side surface of the jaw part 11 of the first jaw is provided with a first concave structure 21 corresponding to an I-steel flange plate 82 (corresponding side of the flange plate) and a first flat end surface 25 corresponding to a side surface of a web plate 84 (corresponding side surface of the web plate), and the inner side surface of the jaw part 31 of the second jaw is provided with a second concave structure 41 corresponding to the I-steel flange plate (corresponding side of the flange plate) and a second flat end surface corresponding to the side surface of the web plate (corresponding side surface of the web plate) 45. In a state of clamping the i-beam (which may be referred to as a clamping state or a closed state), the first concave structure and the second concave structure respectively surround the outer sides of two sides of the flange plate 82 at the top of the i-beam 80 (assuming that the i-beam is clamped by the clamp from the top of the i-beam, or the position where the i-beam is clamped by the clamp is referred to as the top of the i-beam), two sides of the flange plate are respectively inserted into the first concave structure and the second concave structure, and the first flat end surface and the second flat end surface are respectively attached to and abutted against (under the action of contact and pressure) two sides of the web 84 of the i-beam to clamp the web, so that the i-beam is clamped and fixed. During operation, the clamp can be opened, the first concave structure is clamped on one side of the flange plate at the top of the I-steel, the clamp is pressed downwards or the hinged side curved surface of the first concave structure is pressed on the I-steel (at least part of the area is pressed on the flange plate at the top of the I-steel) by means of the gravity of the clamp per se, the first flat end surface is attached to the corresponding side surface of the web plate of the I-steel, the handle part 32 of the second jaw is pulled to enable the first jaw and the second jaw to rotate in the opposite forward direction (the clamping direction of the clamp is made to be the forward direction), the second concave structure of the second jaw is clamped on the other side of the flange plate at the top of the I-steel, and the second flat end surface abuts against the corresponding side surface of the web plate of the I-steel and clamps and fixes the I-steel together with the jaw part of the first jaw.

The first jaw and the second jaw can be respectively provided with hinge shaft holes 15 and 35 for mounting hinge shafts, and other hinge structures can be arranged according to the adopted hinge mode or hinge mounting requirements.

The length of the first flat end face and the second flat end face can be generally smaller than the height of a web of the I-steel, so that when the I-steel is clamped, the first flat end face and the second flat end face only cover part of the side face of the web from the top of the web downwards in the vertical direction, and an area which is not covered by the first flat end face and the second flat end face is reserved at the lower part of the side face of the web, so that the operation is convenient.

For example, the length of the first flat end face and the second flat end face may be preferably 1/2-3/4 of the height of the i-steel web, so that the first flat end face and the second flat end face have a larger contact area with the i-steel web while the operation is convenient, and the stability or the firmness of clamping and fixing the i-steel is ensured.

The first concave structure has a hinge side curved surface 22 (a portion adjacent to the hinge portion) having a main portion in a planar shape, and a plane perpendicular to a plane of the first flat end surface. During operation, the plane on the hinged side curved surface can abut against the upper surface of a flange plate at the top of the I-steel, the first flat end surface abuts against the corresponding side surface of a web plate of the I-steel, positioning and stabilizing between the claw part of the first clamping jaw and the I-steel are achieved, and then the second clamping jaw is pulled to clamp the I-steel from the other side.

The flat end-face-side curved surface (the portion adjacent the first flat end face) 23 of the first female formation generally follows the shape of the underside of the top flange plate of the i-beam, thereby following the shape of the first female formation to the corresponding side of the top flange plate of the i-beam, so as to capture the first female formation on the corresponding side of the flange plate in use. To facilitate handling and to take account of possible differences in the field, the size of the first concave structure (the size of the space, in particular the size corresponding to the thickness of the flange plate) may be slightly larger than the corresponding side of the flange plate, leaving a working gap in the thickness direction of the flange plate.

The curved hinge side surface 42 of the second female formation (the portion adjacent the hinge) is generally not planar and in the clamped condition, leaves a gap with the majority of the top surface of the top flange plate of the i-beam, and is only in contact with the flange plate at the outer edge of the flange plate, the gap being shaped and sized so as not to impede rotation of the second jaw in the event that the planar hinge side surface of the first female formation abuts the top surface of the top flange plate of the i-beam and the first planar end surface abuts the corresponding side surface of the web of the i-beam.

Similarly, the flat facing side surface 43 of the second concave structure (the portion adjacent to the second flat facing side) is also generally not flat, and in the clamped state, a gap is left between the flat facing side surface and most of the bottom area of the top flange plate of the i-beam, and only the outer edge area of the flange plate can be in contact with the flange plate; alternatively, the flat-end-face-side curved surface does not contact the entire area of the bottom of the top flange plate of the i-beam. The gap is shaped and sized to prevent rotation of the second jaw in the event that the planar region of the first concave configuration's hinged side curved surface is flush against the top surface of the top flange plate of the i-steel and the first flat end surface abuts against the corresponding side surface of the i-steel web.

For example, the major part of the flat-end-face-side curved surface of the second concave structure may have a cylindrical shape with the hinge shaft as a central axis, and the radius of the cylindrical surface is not less than the distance from the hinge axis (the hinge axis between the first jaw and the second jaw) to the farthest point on the corresponding side of the top-end flange plate of the i-steel in the case that the flat area of the hinge-side curved surface of the first concave structure is flatly pressed against the top surface of the top-end flange plate of the i-steel and the first flat end surface abuts against the corresponding side surface of the web of the i-steel, so as to ensure that the rotation of the second jaw is not hindered in use.

The number of the first clamping jaws is preferably two, or the first clamping jaws are of a bilaterally symmetrical two-piece structure, the main body parts (particularly the structures related to clamping on the claw parts) of the two first clamping jaws (or the left piece and the right piece of the first clamping jaws) are bilaterally symmetrical and are fixedly connected with each other, a space is reserved between the two first clamping jaws, and the second clamping jaws are positioned between the two first clamping jaws so as to be beneficial to stability and balance of action and stress.

The first jaws may be connected by a fixed connection (e.g., a transverse link, a web, a connecting frame, etc.) shaped and/or positioned so as not to interfere with the rotation of the second jaws (e.g., in a position where the second jaws do not rotate). Usually, the number of the fixed connecting pieces is multiple, and the fixed connecting pieces are respectively arranged at different positions so as to form stable connection and support.

For example, two ends of the positioning pin can be respectively and fixedly connected to the second positioning holes of the two first clamping jaws, so that the positioning pin can simultaneously play a role in fixedly connecting the two first clamping jaws.

For another example, two be equipped with horizontal sleeve pipe between the first jack catch, the axis of sleeve pipe (inner tube and outer tube) is located the articulated axis, the sleeve pipe comprises clearance fit's inner tube and outer tube, and the both ends of inner tube are fixed connection respectively (for example, welding, or threaded connection) on the first jack catch of corresponding side, and the length of outer tube is less than (slightly less than) the gap width between two first jack catches, is equipped with the hinge hole on the second jack catch, the outer tube passes the hinge hole of second jack catch and with second jack catch fixed connection (for example, welding), from this through the cooperation of inner tube and outer tube, realizes articulated between second jack catch and the first jack catch. At the same time, the inner tube also serves as a fixed connection between the two first jaws.

For another example, a fixed hinge shaft is arranged between the two first jaws (for example, two ends of the hinge shaft are respectively welded or screwed on the first jaws on the corresponding sides), the second jaw is rotatably connected to the hinge shaft through a bearing, an inner ring of the bearing is fixedly sleeved on the hinge shaft, the second jaw is fixedly sleeved on an outer ring of the bearing through a bearing mounting hole (a bearing seat is arranged if necessary), and thus the second jaw is hinged to the first jaw. Meanwhile, the hinge shaft also serves as a fixed connecting piece between the two first jaws.

The claw part of the second clamping jaw can adopt two structures which are symmetrically distributed, a fixed connecting piece (for example, a connecting rib, a connecting plate, a connecting rod, a connecting frame and the like) is arranged between the two structures, the actual action width of the claw part of the second clamping jaw can be effectively increased through the two structures, and the stability and the firmness of clamping workpieces are improved.

The shank of the second jaw can adopt a hollow structure so as to increase the thickness of the shank and reduce the increase of weight and materials caused by the increase of the thickness.

And a clamping state locking mechanism for fixing the clamping state is arranged between the first clamping jaw and the second clamping jaw.

For example, the handle portion 12 of the first jaw is provided with a first extending section 17 corresponding to the jaw portion of the second jaw, in the clamping state, the main body portion of the first extending section is preferably located above the main body portion of the jaw portion of the second jaw in the vertical direction, the inner side surface of the first extending section is provided with a first semicircular groove 27 (or a circular hole 26), the outer side surface of the jaw portion of the second jaw is provided with a second semicircular groove 47 corresponding to the first semicircular groove, and when the clamp is in the clamping state, the transverse projections of the first semicircular groove and the second semicircular groove are mutually matched to form a circular hole shape. The first positioning bolt 54 penetrates through the first semicircular groove and the second semicircular groove, the two ends of the first positioning bolt respectively extend out of the first semicircular grooves of the left first clamping jaw and the right first clamping jaw, the nut is screwed on the first positioning bolt, the first positioning bolt is fixed on the left first clamping jaw and the right first clamping jaw, and the second clamping jaw cannot rotate relative to the first clamping jaw due to the fact that the first positioning bolt is blocked outside the claw part of the second clamping jaw, and then the clamp is locked in a state (clamping state) of clamping the I-shaped steel.

The first positioning bolt used for penetrating through the first semicircular groove and the second semicircular groove to achieve locking of a clamp clamping state can be a single-head bolt generally, one end of the first positioning bolt is screwed with a nut, the first positioning bolt can also be a stud bolt, and the outer sides of the first extending sections of the two first clamping jaws are both screwed with nuts.

The shape and size of the first extension and the position of each semicircular groove may be set according to the above-described object.

The first jaw and the second jaw can be provided with a 90-degree forward limiting mechanism which can prevent forward rotation under a 90-degree opening state (a state that the opening angle of the first jaw and the second jaw is approximately 90 degrees, or a state that the first jaw and the second jaw are approximately perpendicular to each other), and can be set to be 90 degrees or an opening angle close to 90 degrees, such as 90 +/-10 degrees, according to actual operation requirements.

For example, the first extending section is provided with a first positioning hole 28, the first positioning hole is positioned above the first semicircular groove, when the clamp is in a 90-degree opening state, the first positioning hole corresponds to a concave point area of a second concave structure on the second clamping jaw, the second positioning bolt 55 penetrates through the first positioning hole, the second positioning bolt just penetrates through the concave point area (an area near the concave point, which corresponds to the side surface and the side surface adjacent area of the flange plate at the top end of the I-steel in a clamping state) of the second concave structure of the second clamping jaw, the second positioning bolt is blocked below the second concave structure, two ends of the second positioning bolt respectively extend out of the first positioning holes of the left first clamping jaw and the right first clamping jaw, nuts are screwed on the second positioning bolt, the second positioning bolt is fixed on the left first clamping jaw and the right first clamping jaw, and the second clamping jaw cannot rotate forward relative to the first clamping jaw due to the fact that the second positioning bolt is blocked on the inner side of the claw part of the second clamping jaw.

The second positioning bolt used for penetrating through the first positioning hole to realize the locking of the opening state of the clamp can be a single-head bolt, one end of the second positioning bolt is screwed with a nut, the double-head bolt can also be adopted, and the nuts are screwed with the outer sides of the first extension sections of the two first clamping jaws. The radius of the first positioning hole may be equal to the radius of the first semicircular groove and the second semicircular groove, whereby the first positioning bolt and the second positioning bolt required for locking in the opened state and the clamped state may be the same bolt, to facilitate a user.

The shape and size of the first extension and the position of the first positioning hole may be set according to the above-described object. Based on the setting requirement of the first semicircular groove, the shape and the size of the contained first extension section should simultaneously consider the setting requirement of the first semicircular groove and the first positioning hole.

A90-degree reverse limiting mechanism for preventing the reverse rotation in a 90-degree opening state can be arranged between the first clamping jaw and the second clamping jaw. The 90-degree reverse limiting mechanism can also be used for limiting the maximum opening angle of the clamp to form the limiting mechanism of the maximum opening angle.

For example, the handle portion of the first clamping jaw is provided with a second positioning hole 29, a transverse limiting column is fixedly inserted into the second positioning hole or a non-inserted limiting column is fixed onto the second positioning hole, and the second clamping jaw is located between the two first clamping jaws, so that the limiting column can be blocked in the rotating area of the second clamping jaw to limit the rotating range of the second clamping jaw.

The second locating hole is located above the hinged point of the first clamping jaw and the second clamping jaw, corresponds to the second semicircular groove, is located on the rotating track of the second semicircular groove transversely, and is arranged in a position which enables the second clamping jaw to rotate to a 90-degree opening state (the opening state of the clamp) in the reverse direction (the opening direction of the clamp), is arranged on the second locating hole, can just block the reverse rotating side (or the outer side) of the second semicircular groove by a limiting column and the like, and blocks the second clamping jaw to enable the second clamping jaw not to continue to rotate in the reverse direction. When the second positioning hole is not spliced with the limiting column, the third positioning bolt can pass through the second positioning hole when the clamp is in a 90-degree opening state, so that the second semicircular groove is clamped on the third positioning bolt. The two ends of the third positioning bolt respectively extend out of the second positioning holes of the left first clamping jaw and the right first clamping jaw, the nut is screwed on the third positioning bolt, the third positioning bolt is fixed on the left first clamping jaw and the right first clamping jaw, and the third positioning bolt is blocked outside the claw part of the second clamping jaw, so that the second clamping jaw cannot rotate relative to the first clamping jaw in the further opening direction, and the clamp is limited in the state that the clamp cannot be further opened.

The second positioning bolt and the third positioning bolt or the limiting column simultaneously form forward rotation limiting and reverse rotation limiting in a 90-degree opening state, and the clamp is locked in a 90-degree opening state in cooperation.

The limiting column can be a transverse pin column fixedly inserted or screwed on the second positioning hole, and when the limitation of the maximum opening angle is not needed, the limiting column can be pulled out or screwed out of the second positioning hole.

The shank of the second jaw is provided with a handle 38, which is a long handle of sufficient length to be practical for convenient handling.

For example, two ends of the positioning pin can be respectively and fixedly connected to the second positioning holes of the two first clamping jaws, so that the positioning pin can simultaneously play a role in fixedly connecting the two first clamping jaws.

The upper end of the handle portion of one or both of the first jaws is provided with an inverted U-shaped hook 56, which may be formed by bending laterally outward, or may be fixedly connected to the upper end of the handle portion of the corresponding first jaw by welding, etc., so as to hang the clamp on a cross bar 68 such as a work platform handrail, etc., or other suitable structure.

Be equipped with the couple through-hole of symmetry on two lateral walls of couple, the couple through-hole has the distance of selecting apart from couple top to be roughly equal to (being equal to, slightly be greater than or slightly less than) the width of couple to be adapted to better and hang on square steel or circular steel tube. After the clamp is hung on the handrail through the hook, the clamp can pass through the two hook through holes of the hook from the hook positioning screws 58, and the clamp is screwed tightly from the outer side of the hook by nuts to fix the bolt on the hook.

When the fixture is used for dismantling the flower basket cantilever frame, the I-shaped steel fixture for the operation platform is fixed on not less than 3 outdoor flower basket cantilever frames (the cantilever frames fixed on a wall body or the undetached cantilever frames) 71, so that corresponding operation space is provided for workers for dismantling the operation, the corresponding I-shaped steel fixture is clamped on the cantilever frame 73 to be dismantled, the cantilever frame is dismantled from the wall after the I-shaped steel fixture is fixed, the worker in the upper floor uses the lifting device to recover the flower basket to the indoor space and transfer the flower basket to a safety zone, and then the safety operation platform is sequentially moved backwards to dismantle the next flower basket cantilever frame section steel.

The technical means disclosed by the utility model can be combined arbitrarily to form a plurality of different technical schemes except for special description and the further limitation that one technical means is another technical means.

Claims (10)

1. Outer scaffold frame demolishs operation device, including work platform, work platform is equipped with the guardrail, the guardrail includes inboard guardrail and outside guardrail, and its characterized in that still includes I-steel anchor clamps, I-steel anchor clamps are including being used for the fixed I-steel anchor clamps of platform and being used for the scaffold frame fixed and the I-steel anchor clamps that suspend in midair, are used for the platform fixed I-steel anchor clamps are with being used for the scaffold frame fixed and suspend in midair the I-steel anchor clamps structure is the same, is used for the platform fixed I-steel anchor clamps are installed on the inboard guardrail and/or on the outside guardrail, be used for the scaffold frame fixed with suspend in midair the I-steel anchor clamps are connected with the work piece lifting rope, I-steel anchor clamps include first jack catch and second jack catch, first jack catch and second jack catch are articulated each other, form the jaw structure, the medial surface of the claw portion of first jack catch is equipped with be used for the first spill structure that corresponds with I-steel flange board and the first flat end that corresponds with I-steel web side face And the inner side surface of the claw part of the second claw is provided with a second concave structure corresponding to the flange plate of the I-shaped steel and a second flat end surface corresponding to the side surface of the web plate of the I-shaped steel.

2. The external scaffolding dismantling device as claimed in claim 1, wherein the i-steel clamps for platform fixing are detachably mounted on the side rails in a plurality of groups of two, each group being mounted on the corresponding positions of the inner side and outer side rails.

3. An external scaffolding dismantling device as claimed in claim 1, wherein the major part of the curved surface of the hinged side of said first concave structure is planar and lies in a plane perpendicular to the plane of said first planar end face.

4. An external scaffolding dismantling device as claimed in claim 1, 2 or 3, wherein the number of the first claws is two, the main body portions of the first claws are symmetrical and fixedly connected with each other with a space left therebetween, and the second claw is located between the first claws.

5. The external scaffolding dismantling device as claimed in claim 4, wherein a transverse sleeve is provided between the first jaws, the axis of the sleeve is located on the hinge axis, the sleeve is composed of an inner pipe and an outer pipe which are in clearance fit, both ends of the inner pipe are respectively fixedly connected to the first jaws on the corresponding sides, the length of the outer pipe is smaller than the width of the gap between the two first jaws, the second jaw is provided with a hinge hole, and the outer pipe passes through the hinge hole of the second jaw and is fixedly connected with the second jaw; or, set up fixed articulated shaft between two first jack catchs, the second jack catch passes through bearing swivelling joint and is in on the articulated shaft, the inner circle fixed sleeve of bearing is established on the articulated shaft, the second jack catch is established through its bearing mounting hole fixed sleeve on the outer lane of bearing.

6. The external scaffolding dismantling working apparatus as claimed in claim 4, wherein a clamping state locking mechanism for fixing the clamping state is provided between the first jaw and the second jaw.

7. The external scaffolding dismantling device as claimed in claim 4, wherein a 90 ° forward limiting mechanism for preventing forward rotation in the 90 ° open state and a 90 ° reverse limiting mechanism for preventing reverse rotation in the 90 ° open state are provided between the first jaw and the second jaw.

8. The external scaffolding dismantling device as claimed in claim 4, wherein the shank of the second jaw is provided with a handle which is a long shank.

9. The external scaffolding dismantling device as claimed in claim 4, wherein the upper end of the shank of one or both of the first jaws is provided with an inverted U-shaped hook.

10. The external scaffolding dismantling device as claimed in claim 9, wherein the two side walls of the hook are provided with symmetrical hook through holes, and hook closing bolts pass through the symmetrical hook through holes and are fastened to the hook by nuts.

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