CN209760754U

CN209760754U - liftable and foldable scaffold

Info

Publication number: CN209760754U
Application number: CN201920253831.8U
Authority: CN
Inventors: 宋伟峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-02-28
Filing date: 2019-02-28
Publication date: 2019-12-10
Anticipated expiration: 2029-02-28

Abstract

The utility model relates to the field of building engineering, in particular to a liftable and foldable scaffold, which comprises a bottom frame, a top frame, a rotary folding ladder, a lifting mechanism, six fixed legs and six universal wheels, wherein four hollow shafts are vertically arranged at four corners of the upper end of the bottom frame, the top frame is arranged on the bottom frame through four guide rods positioned at four corners of the top frame, each guide rod is inserted in the hollow shaft at a corresponding position, the rotary folding ladder is hinged at one end of the width direction of the top frame, the lifting mechanism is arranged at the upper end of the bottom frame through a fixed seat, the upper end and the lower end of the lifting mechanism are respectively connected with the top frame and the bottom frame, four universal wheels of the six universal wheels are respectively arranged at four corners of the lower end of the bottom frame, and four fixed legs of the six fixed legs are respectively arranged on the bottom frame and are close to the positions of the corresponding universal wheels, the height of, the ladder has various purposes and is convenient to fold.

Description

Liftable and foldable scaffold

Technical Field

The utility model relates to a building engineering field specifically, relates to a liftable and folding scaffold frame.

Background

The scaffold is necessary equipment for ascending operation, can be used in various industries, particularly in the building industry, the number of the used scaffold is more, most of the common scaffolds in the market at present are composed of upright posts, cross rods, connecting rods and pedals, and when the scaffold is built, problems are often found when the scaffold is built up layer by layer, when the scaffold is built, workers are required to clean the ground, the scaffold is prevented from being unstable due to the fact that the scaffold presses other objects, a large amount of time and energy are wasted, moreover, because the height of the scaffold is fixed, the scaffold is higher when more than one layer is built, and is shorter when less than one layer is built, and the scaffold can not be stopped at the required position, just so very inconvenient, can not find suitable position operation, the cat ladder of most scaffold all vertical setting on the scaffold, cat ladder itself can not remove and folding, influence personnel's safety and work efficiency. There is therefore a need for a scaffold that can be changed in height and ladder angle and that is easy to fold.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a liftable and folding scaffold frame.

The utility model discloses a liftable and folding scaffold frame, including the chassis, the roof-rack, rotatory folding ladder, elevating system, six fixed feet and six universal wheels, the vertical four corners department that is provided with of chassis upper end is provided with four hollow shafts, the roof-rack sets up on the chassis through four guide arms that are located its four corners, every guide arm is all inserted and is established in the hollow shaft that corresponds the position, rotatory folding ladder articulates in roof-rack width direction's one end, elevating system's the fixing base that passes through sets up in the chassis upper end, elevating system's upper and lower end is connected with roof-rack and chassis respectively, four universal wheels in six universal wheels set up the four corners department at the chassis lower extreme respectively, four fixed feet in six fixed feet set up the position that is close to corresponding universal wheel on the chassis respectively.

Preferably, elevating system includes lift screw rod, goes up screw rod sleeve, lower screw rod sleeve and runner, goes up screw rod sleeve and lower screw rod sleeve vertical setting respectively in the lower extreme of roof-rack and the upper end of chassis, and the upper and lower end of lift screw rod is inserted respectively and is established in last screw rod sleeve and lower screw rod sleeve, and the telescopic all coaxial settings of lift screw rod, last screw rod sleeve and lower screw rod, the fixed centre that sets up at the lift screw rod of runner.

Preferably, the lifting screw passes the fixing base and passes through the rotatable setting of two snap rings on the fixing base, and two snap rings are located the upper and lower both sides of fixing base respectively and fix on the lifting screw, all set up the screw thread in the upper end of lifting screw and the last screw rod sleeve, and the lower extreme of lifting screw all does not set up the screw thread with lower screw rod sleeve, and the upper end of lifting screw and last screw rod sleeve connect soon.

Preferably, rotatory folding ladder includes ladder frame, backup pad, footboard angle adjustment mechanism and a plurality of footboard, and the upper end of ladder frame articulates the one end at roof-rack width direction through the pivot, and the equal rotatable interval of every footboard sets up on ladder frame, and the rotatable setting of backup pad is at the lower extreme of ladder frame, and two other universal wheels of six universal wheels set up the lower extreme in the backup pad, and two other fixed feet of six fixed feet set up the position that is close to corresponding universal wheel in the backup pad, and footboard angle adjustment mechanism sets up the both sides at ladder frame width direction, and every footboard all is connected with footboard angle adjustment mechanism.

Preferably, footboard angle adjustment mechanism includes two railings and a plurality of connecting rod, the lower extreme of two railings is fixed respectively and is set up the both ends at backup pad length direction, the upper end of two railings is all fixed on the ladder frame through the bolt of screwing, the bolt of screwing connects railing and ladder frame soon, all connecting rods all set up between two adjacent footboards through the connecting axle, the connecting rod quantity of footboard both sides is the same and the quantity of connecting axle is half of connecting rod quantity, every connecting axle all sets up on keeping away from one end of roof-rack on footboard width direction, two railing length direction's both ends are equallyd divide do not with be located two connecting axles of highest department and lowest department.

preferably, all the fixing legs are screwed on the underframe or the supporting plate.

Has the advantages that: when scaffold height is adjusted to needs, it is rotatory to drive the lifting screw rod through rotating the runner, and then makes upper screw rod sleeve and roof-rack rise or descend, makes every guide arm slide from top to bottom in corresponding the hollow shaft simultaneously, prevents that the top from taking place to rock. Because connect soon between the upper end of lifting screw and the last screw rod sleeve, the lifting screw is through forward or reverse rotating screw up or screw down last screw rod sleeve and roof-rack, and two snap rings are with lifting screw card on the fixing base for lifting screw can not reciprocate when rotatory, does not set up the screw thread between lifting screw and the lower screw rod sleeve, makes lower screw rod sleeve and chassis can not change the height because of lifting screw rotates. Because the ladder frame is articulated with the roof-rack, when the roof-rack height changes, the ladder frame then can revolute the certain angle of rotation of axes and make universal wheel in the backup pad all with fixed foot and ground contact, when ladder frame angle mode changes, the angle of every footboard also can change, then need the bolt of screwing of railing upper end both sides loose this moment, the pulling railing, and then drive two footboards of highest point and lowest department and rotate to horizontal position, and these two footboards then transfer other footboards to the level through the connecting rod of being connected with it. Then the two handrails and the ladder frame are screwed through the screwing bolts, so that the safety of personnel when climbing the ladder is guaranteed. After the height of scaffold frame and the angle of rotatory folding ladder have been adjusted, it is fixed to ground with all fixed feet soon for all universal wheels are all liftoff, prevent that the during operation scaffold frame from removing, when personnel need the ladder further to scramble or set up in other places on the roof-rack, also can upwards rotate the ladder to the target location. The utility model discloses can be swiftly convenient height-adjusting, also can adjust the angle of cat ladder as required, the various usage of performance cat ladder also conveniently folds simultaneously.

drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

Fig. 1 is a schematic perspective view of the present invention;

Fig. 2 is a schematic perspective view of the present invention;

Fig. 3 is a side view of the present invention;

Fig. 4 is a schematic three-dimensional structure diagram of the present invention;

Fig. 5 is a schematic three-dimensional structure diagram of the present invention;

description of reference numerals: underframe 1, roof-rack 2, fixed foot 3, universal wheel 4, hollow shaft 5, guide arm 6, fixing base 7, lifting screw 8, go up screw rod sleeve 9, lower screw rod sleeve 10, runner 11, snap ring 12, ladder frame 13, backup pad 14, footboard 15, railing 16, connecting rod 17, the bolt 18 of screwing, connecting axle 19, pivot 20.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1-5 a liftable and foldable scaffold frame, including chassis 1, roof-rack 2, rotatory folding ladder, elevating system, six fixed feet 3 and six universal wheels 4, the four corners department of chassis 1 upper end is vertical to be provided with four hollow shafts 5, roof-rack 2 sets up on chassis 1 through four guide arms 6 that are located its four corners, every guide arm 6 all inserts and establishes in the hollow shaft 5 that corresponds the position, rotatory folding ladder articulates the one end at 2 width direction on roof-rack, elevating system's the fixing base 7 that passes through sets up in chassis 1 upper end, elevating system's upper and lower end is connected with roof-rack 2 and chassis 1 respectively, four universal wheels 4 in six universal wheels 4 set up the four corners department at chassis 1 lower extreme respectively, four fixed feet 3 in six fixed feet 3 set up respectively on chassis 1 and are close to the position that corresponds universal wheel 4.

The lifting mechanism comprises a lifting screw 8, an upper screw sleeve 9, a lower screw sleeve 10 and a rotating wheel 11, wherein the upper screw sleeve 9 and the lower screw sleeve 10 are vertically arranged at the lower end of the top frame 2 and the upper end of the bottom frame 1 respectively, the upper end and the lower end of the lifting screw 8 are inserted into the upper screw sleeve 9 and the lower screw sleeve 10 respectively, the lifting screw 8, the upper screw sleeve 9 and the lower screw sleeve 10 are coaxially arranged, and the rotating wheel 11 is fixedly arranged in the middle of the lifting screw 8.

The lifting screw 8 passes through the fixing seat 7 and is rotatably arranged on the fixing seat 7 through two clamping rings 12, the two clamping rings 12 are respectively located on the upper side and the lower side of the fixing seat 7 and are fixed on the lifting screw 8, threads are arranged in the upper end of the lifting screw 8 and the upper screw sleeve 9, the lower end of the lifting screw 8 and the lower screw sleeve 10 are not provided with threads, and the upper end of the lifting screw 8 and the upper screw sleeve 9 are connected in a screwing mode.

Rotatory folding ladder includes ladder frame 13, a supporting plate 14, footboard angle adjustment mechanism and a plurality of footboard 15, ladder frame 13's upper end articulates the one end at 2 width direction of roof-rack through pivot 20, the equal rotatable interval of every footboard 15 sets up on ladder frame 13, the rotatable lower extreme that sets up at ladder frame 13 of supporting plate 14, two other universal wheels 4 of six universal wheels 4 set up the lower extreme at supporting plate 14, two other fixed feet 3 of six fixed feet 3 set up the position that is close to corresponding universal wheel 4 in supporting plate 14, footboard angle adjustment mechanism sets up the both sides at ladder frame 13 width direction, every footboard 15 all is connected with footboard angle adjustment mechanism.

Footboard 15 angle adjustment mechanism includes two railings 16 and a plurality of connecting rod 17, the lower extreme of two railings 16 is fixed respectively and is set up the both ends at 14 length direction of backup pad, the upper end of two railings 16 is all fixed on ladder frame 13 through the bolt 18 of screwing, the bolt 18 of screwing connects railing 16 and ladder frame 13 soon, all connecting rods 17 all set up between two adjacent footboards 15 through connecting axle 19, the connecting rod 17 quantity of footboard 15 both sides is the same and the quantity of connecting axle 19 is half of connecting rod 17 quantity, every connecting axle 19 all sets up on the one end of keeping away from roof-rack 2 on footboard 15 width direction, two railing 16 length direction's both ends are equallyd divide and do not are connected with two connecting axles 19 that are located highest point and lowest point.

All the fixing feet 3 are screwed on the underframe 1 or the supporting plate 14.

The working principle is as follows: when scaffold height needs to be adjusted, the rotating wheel 11 is rotated to drive the lifting screw rod 8 to rotate, so that the upper screw rod sleeve 9 and the top frame 2 ascend or descend, and meanwhile, each guide rod 6 slides up and down in the corresponding hollow shaft 5, and the top is prevented from shaking. Because connect soon between the upper end of lifting screw 8 and last screw sleeve 9, lifting screw 8 is being rotated through forward or reverse and is being screwed on or unscrew last screw sleeve 9 and roof-rack 2, and two snap rings 12 are with lifting screw 8 card on fixing base 7 for lifting screw 8 can not reciprocate when rotatory, does not set up the screw thread between lifting screw 8 and the lower screw sleeve 10, makes lower screw sleeve 10 and chassis 1 can not change the height because of lifting screw 8 is rotatory. Because ladder frame 13 is articulated with roof-rack 2, when roof-rack 2 highly changes, ladder frame 13 then can revolute 20 rotatory certain angles and make universal wheel 4 and fixed foot 3 on the backup pad 14 all can with ground contact, when ladder frame 13 angle mode changes, the angle of every footboard 15 also can change, then need the bolt 18 of screwing of railing 16 upper end both sides loose soon this moment, pulling railing 16, and then drive two footboards 15 of highest and lowest department and rotate to horizontal position, and these two footboards 15 then adjust other footboards 15 to the level through connecting rod 17 of being connected with it. The two balustrades 16 and the ladder frame 13 are then screwed together by means of the tightening bolts 18. After the height of scaffold frame and the angle of rotatory folding ladder have been adjusted, it is fixed to ground with all fixed feet 3 soon for all universal wheels 4 are all liftoff, prevent that the during operation scaffold frame from removing, the safety of guarantee personnel when the cat ladder.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a liftable and folding scaffold frame which characterized in that: comprises a bottom frame (1), a top frame (2) and a rotary folding ladder, elevating system, six fixed feet (3) and six universal wheel (4), the four corners department of chassis (1) upper end is vertical to be provided with four hollow shaft (5), roof-rack (2) set up on chassis (1) through four guide arm (6) that are located its four corners, every guide arm (6) all insert and establish in hollow shaft (5) of corresponding position, rotatory folding ladder articulates the one end at roof-rack (2) width direction, elevating system's the fixing base (7) that pass through sets up in chassis (1) upper end, elevating system's upper and lower end is connected with roof-rack (2) and chassis (1) respectively, four universal wheel (4) in six universal wheel (4) set up respectively in the four corners department of chassis (1) lower extreme, four fixed feet (3) in six fixed feet (3) set up respectively and are close to the position that corresponds universal wheel (4) on chassis (1).

2. A liftable and collapsible scaffolding according to claim 1, wherein: elevating system includes lifting screw (8), goes up screw sleeve (9), screw sleeve (10) and runner (11) down, goes up screw sleeve (9) and screw sleeve (10) down and vertically sets up respectively in the lower extreme of roof-rack (2) and the upper end of chassis (1), the upper and lower end of lifting screw (8) is inserted respectively and is established in last screw sleeve (9) and lower screw sleeve (10), lifting screw (8), go up the equal coaxial setting of screw sleeve (9) and screw sleeve (10) down, runner (11) are fixed to be set up in the centre of lifting screw (8).

3. A liftable and collapsible scaffolding according to claim 2, wherein: lifting screw (8) pass fixing base (7) through the rotatable setting of two snap rings (12) on fixing base (7), two snap rings (12) are located the upper and lower both sides of fixing base (7) respectively and fix on lifting screw (8), all set up the screw thread in the upper end of lifting screw (8) and last screw rod sleeve (9), and the lower extreme of lifting screw (8) and lower screw rod sleeve (10) all do not set up the screw thread, and the upper end of lifting screw (8) connects with last screw rod sleeve (9) soon.

4. A liftable and collapsible scaffolding according to claim 1, wherein: rotatory folding ladder includes ladder frame (13), backup pad (14), footboard angle adjustment mechanism and a plurality of footboard (15), the upper end of ladder frame (13) articulates the one end at roof-rack (2) width direction through pivot (20), the equal rotatable interval setting of every footboard (15) is on ladder frame (13), the rotatable setting of backup pad (14) is at the lower extreme of ladder frame (13), two other universal wheels (4) of six universal wheels (4) set up the lower extreme at backup pad (14), two other fixed feet (3) of six fixed feet (3) set up the position that is close to corresponding universal wheel (4) on backup pad (14), footboard angle adjustment mechanism sets up the both sides at ladder frame (13) width direction, every footboard (15) all are connected with footboard angle adjustment mechanism.

5. A liftable and collapsible scaffolding according to claim 4, wherein: footboard (15) angle adjustment mechanism includes two railing (16) and a plurality of connecting rod (17), the lower extreme of two railing (16) is fixed respectively and is set up at backup pad (14) length direction's both ends, the upper end of two railing (16) is all fixed on ladder frame (13) through bolt (18) of screwing, bolt (18) of screwing connects railing (16) and ladder frame (13) soon, all connecting rod (17) all set up between two adjacent footboard (15) through connecting axle (19), the same and connecting axle (19) of connecting rod (17) quantity of footboard (15) both sides is half of connecting rod (17) quantity, every connecting axle (19) all set up in footboard (15) width direction on keeping away from one end of roof-rack (2), two railing (16) length direction's both ends are equallyd divide and do not are connected with two connecting axle (19) that are located highest point and lowest point.

6. a liftable and collapsible scaffolding according to claim 1, wherein: all the fixing feet (3) are screwed on the bottom frame (1) or the supporting plate (14).