CN107859475A - The anti-fall aerial work platform ladder of height adjustable - Google Patents

Abstract

The invention relates to a height-adjustable anti-fall aerial work platform ladder, which includes a flat plate for supporting operators. The lower plate surface of the flat plate is provided with an installation mechanism fixed to the equipment channel steel, and the upper plate surface of the flat plate is provided with a support column. Fasteners are arranged on the support column, and hanging rings for fixing safety belts are arranged on the fasteners. A support frame and a ladder frame are arranged on the flat plate. One end of the ladder frame is rotatably connected with one end of the support frame and the shaft is horizontal. The other end of the support frame is rotationally connected with the flat plate, and the other end of the support frame forms a detachable rotational connection with the flat plate. The rotating shafts of the support frame and the ladder frame are horizontal and parallel to each other. The effective fixation of the anti-falling device, the operator steps on the flat plate, the safety belt passes through the hanging ring, and the support frame and the ladder frame are set on the flat plate, and the operator steps on the ladder frame, so that different heights can be adjusted. location for work.

Description

Height adjustable anti-fall aerial work platform ladder

technical field

The invention relates to the technical field of electric power maintenance equipment, in particular to a height-adjustable anti-fall aerial work platform ladder.

Background technique

Now whether it is central or local, safety production is placed at the top of every management. As a power company of the State Grid Corporation of China, it puts safety production at the top of all management tasks, and puts personal safety in the first place, which cannot be touched as a red line. In the construction of the power grid and equipment maintenance, various safety measures must be implemented to prevent minor personal injuries and above-mentioned accidents. The State Grid Corporation of China stipulates that when working on a scaffold without scaffolding or without railings and the height exceeds 1.5 meters, safety belts should be used or other reliable safety measures should be taken. There are also regulations: the hook or rope of the seat belt should be hung on a strong and firm component, or on a steel wire rope specially used for hanging the seat belt, and should be hung high and low. It is forbidden to hang on moving or unstable objects [such as isolating switch (knife switch) support insulators, CVT insulators, busbar post insulators, lightning arrester post insulators, etc.].

Now there are some problems in the high-altitude operation of the substation: 1. If the height exceeds 1.5 meters, safety belts should be used, but the safety belts cannot be hung on the supporting insulators of the isolating switch (knife switch), CVT insulators, busbar post insulators, and lightning arrester post insulators. If it is hung on the insulator, it is a serious violation of regulations. When the insulator breaks, it will cause a high-altitude fall and personal safety accident; 2. The violation of the safety belt hanging on the insulator occurs repeatedly during on-site supervision by safety supervisors; 3. Bucket trucks cannot Entering the work site, bucket arm trucks cannot be used; 4. When setting up a landing operation platform, the electrical safety distance is not easy to meet the requirements, and it takes a long time to set up; 5. There is no special equipment for sale; 6. When checking the knife switch or circuit breaker, you can only stand On the support channel steel, it affects work efficiency; 7. Standing on the equipment frame channel steel, the height is insufficient, which is inconvenient for operation and construction; 8. It has been unable to solve the illegal behavior of substation electrical maintenance work at high places for many years.

Contents of the invention

The object of the present invention is to provide a height-adjustable anti-fall aerial work platform ladder, which can facilitate operators to work at different heights of the platform and ensure the safety of the operators.

To achieve the above object, the present invention adopts the following technical solutions:

The height-adjustable anti-fall aerial work platform ladder includes a flat plate for supporting the operator. The lower surface of the flat plate is provided with an installation mechanism fixed to the equipment channel steel, and the upper surface of the flat plate is provided with a support column. Fasteners are provided on the supporting column, and hanging rings for fixing safety belts are provided on the fasteners. A support frame and a ladder frame are provided on the flat plate, and one end of the ladder frame and one end of the support frame rotate connected and the rotating shaft is horizontal, the other end of the ladder frame is rotatably connected to the flat plate, the other end of the support frame is detachably connected to the flat plate, and the rotating shafts of the support frame and the ladder frame are horizontal and parallel to each other.

The present invention also has the following features:

The flat plate is provided with a groove for accommodating the support frame and the ladder frame, one end of the ladder frame is connected to one end of the support frame through a connecting shaft, and the other end of the ladder frame is provided with a rotating shaft to rotate and connect with both sides of the groove , the other end of the support frame is provided with a card groove and a locking shaft provided on the side of the groove to form a snap fit.

A locking hook is rotatably provided above the locking slot, and the locking hook and the locking shaft form a snap-fit or detachable fit.

The installation mechanism includes a screw rod arranged on the flat plate, the lower end of the screw rod is threadedly connected with the positioning block, the rod end of the screw rod protruding from the positioning block is provided with a lock nut, and the positioning block is provided with a fixed arm , the fixed arm cantilever horizontally and the overhanging end is provided with a limit screw, the limit screw, the fixed arm and the positioning block form a bayonet for clamping the channel steel of the equipment, and the positioning block is provided with a baffle, The included angle between the plate surface of the baffle plate and the length direction of the fixed arm is 90°.

The fastener includes an anti-slip belt hooped on the support column, the two ends of the anti-slip belt are respectively connected to one end of the connecting buckle, and the other end of the connecting buckle is respectively connected to the two ends of the driving roller in rotation, The rotating connecting end of the connecting buckle and the driving roller is arranged eccentrically with the roller core of the driving roller, and the hanging ring is arranged on the driving roller.

The anti-slip belt is rod-shaped and made of rubber material, a cantilever is arranged at the middle section of the body of the driving roller, and the hanging ring is arranged at the cantilever end.

The upper end of the support column is provided with an anti-loosening bolt, and the length direction of the anti-loosening bolt is horizontal and connected with the threaded hole on the outer wall of the upper end of the support column.

A splint is arranged on the side of the flat plate, and the splint is in the shape of a slotted plate with the notch facing downwards. The middle of the splint is provided with a plug-in block connected to the support column, and the support column is provided with a through-bolt , the rod end of the through-hole bolt is provided with a second fastening nut, and the two sides of the plug-in block are provided with limiting blocks.

The splint is provided with a strip-shaped hole for the screw rod to pass through, and the strip-shaped hole is parallel to the length direction of the splint.

Compared with the prior art, the technical effect of the present invention is: the platform is fixed on the channel steel of the equipment through the installation mechanism, so that the anti-falling device can be effectively fixed, the operator steps on the flat plate, and the safety belt passes through The hanging ring is a ladder composed of a support frame and a ladder frame on the flat plate. The operator steps on the ladder frame, so that the operation can be carried out at different heights.

Description of drawings

Fig. 1 is a structural schematic diagram of the use state of the height-adjustable anti-fall aerial work platform ladder;

Fig. 2 is a flat plan view in the height-adjustable anti-fall aerial work platform ladder;

Fig. 3 is the front view of fastener;

Figure 4 is a top view of the installation of the fastener and the support column;

Fig. 5 is the structural representation of screw rod;

Fig. 6 is a schematic diagram of a state in which the support frame and the ladder frame are unfolded.

Detailed ways

In conjunction with Fig. 1 to Fig. 6, the present invention is described further:

The height-adjustable anti-fall aerial work platform ladder includes a flat plate 10 for supporting the operator, the lower plate surface of the flat plate 10 is provided with an installation mechanism fixed with the equipment channel steel 20, and the upper plate surface of the flat plate 10 is provided with A support column 40, the support column 40 is provided with a fastener 50, the fastener 50 is provided with a hanging ring 51 for fixing the safety belt, and the flat panel 10 is provided with a support frame 31 and a ladder frame 32, One end of the ladder frame 32 is rotatably connected to one end of the support frame 31 and the rotating shaft is horizontal, the other end of the ladder frame 32 is rotatably connected to the flat panel 10, and the other end of the support frame 31 forms a detachable rotary connection with the flat panel 10 , the rotating shafts of the support frame 31 and the ladder frame 32 are horizontal and parallel to each other;

As shown in Fig. 1 and Fig. 6, the platform 10 is fixed on the channel steel 20 of the equipment through the installation mechanism, so that the anti-falling device can be effectively fixed, the operator steps on the flat plate 10, and the safety belt passes through the hanging ring 51 , A ladder made of a support frame 31 and a ladder frame 32 is set on the flat plate, and the operator steps on the ladder frame 32 to perform operations at different height positions.

As a preferred solution of the present invention, the flat panel 10 is provided with a groove 11 for accommodating a support frame 31 and a ladder frame 32, and one end of the ladder frame 32 is connected to one end of the support frame 31 through a connecting shaft 33, and the ladder frame The other end of 32 is provided with rotating shaft 321 and the two sides of groove 11 are rotatably connected, and the other end of described support frame 31 is provided with card groove 311 and the locking shaft 111 that groove 11 side is provided forms snap fit;

When the above-mentioned herringbone ladder is in use, the locking groove 311 of the support frame 31 is engaged with the locking shaft 111 provided on the side of the groove 11, so that the support frame 31 and the ladder frame 32 are in an open state, which is convenient For use by the operator, when the ladder is not in use, the support frame 31 is folded, and the ladder frame 32 is in the middle of the support frame 31, the support frame 31 and the ladder frame 32 are folded into a flat plate, and accommodated in the groove 11, thereby reducing the space occupied by the support frame 31 and the ladder frame 32.

As shown in FIG. 6, in order to prevent the locking shaft 111 provided on the side of the groove 11 from moving out of the slot 311 of the support frame 31, a locking hook 312 is rotatably arranged above the slot 311, and the locking hook 312 is connected to the locking The shaft 111 constitutes snap-fit or separation fit, and the above-mentioned locking hook 312 can rotate to the bottom of the locking shaft 111 under the action of its own gravity, so as to realize the locking of the locking shaft 111 .

Specifically, the installation mechanism includes a screw rod 60 provided on the plate 10, the lower end of the screw rod 60 is screwed to the positioning block 61, and the rod end of the screw rod 60 protruding from the positioning block 61 is provided with a locking nut 62, The positioning block 61 is provided with a fixed arm 63, the fixed arm 63 cantilevered horizontally and the overhanging end is provided with a limit screw 631, and a clamping device is formed between the limit screw 631, the fixed arm 63 and the positioning block 61 The bayonet of the channel steel 20, the positioning block 61 is provided with a baffle 611, and the angle between the surface of the baffle 611 and the length direction of the fixed arm 63 is 90°.

The operator can extend the screw rod 60 downward from the flat plate 10 to the side of the equipment channel steel 20, and rotate the above screw rod 60 so that the bayonet formed between the above-mentioned limiting screw rod 631, the fixed arm 63 and the positioning block 61 It is clamped on the equipment channel steel 20, and under the action of the baffle plate 611, the further rotation of the fixed arm 33 is restricted to realize the automatic clamping of the equipment channel steel 20, which is very convenient for single-person operation, and then on the flat panel 10 The screw rod 60 is rotated so that the screw rod 60 is positioned at the positioning block 61 and rotated until the above positioning block 61 is clamped on the flat panel 10 , and then the platform can be fixed.

The fastener 50 includes an anti-skid belt 52 hooped on the supporting column 40, the two ends of the anti-skid belt 52 are respectively connected to one end of the connecting buckle 53, and the other end of the connecting buckle 53 is connected to the driving roller respectively. The two ends of 54 are rotatably connected, the rotating connection end of the connecting buckle 53 and the driving roller 54 is arranged eccentrically with the roller core of the driving roller 54 , and the hanging ring 51 is arranged on the driving roller 53 .

The anti-skid belt 52 is rod-shaped and made of rubber material. The middle section of the roller body of the driving roller 54 is provided with a cantilever 541 , and the hanging ring 51 is provided at the cantilever end of the cantilever 541 .

The upper end of the support column 40 is provided with an anti-loosening bolt 43 , the length direction of the anti-loosening bolt 43 is horizontal and connected with the threaded hole on the outer wall of the upper end of the support column 40 .

The side of described plate 10 is provided with splint 12, and described splint 12 is slot plate shape and notch is downward, and the middle position of described splint 12 is provided with the socket block 13 that is connected with support column 40, and described support column 40 is provided with a through-bolt 41 , the rod end of the through-bolt 41 is provided with a second fastening nut 42 , and both sides of the insertion block 13 are provided with limiting blocks 131 .

The splint 12 is provided with a strip-shaped hole 121 through which the screw rod 30 passes, and the strip-shaped hole 121 is parallel to the length direction of the splint 12 .

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (9)

1. the anti-fall aerial work platform ladder of height adjustable, it is characterised in that：Including the flat board (10) for bracketing operating personnel, institute The lower face for stating flat board (10) is provided with the installing mechanism fixed with equipment channel-section steel (20), and the upper face of the flat board (10) is set There is support column (40), fastener (50) is provided with the support column (40), be provided with the fastener (50) for fixing The link (51) of safety belt, support frame (31) and ladder (32), one end of the ladder (32) are provided with the flat board (10) Horizontal with one end rotation connection and rotating shaft of support frame (31), the other end and the flat board (10) of the ladder (32) are rotatablely connected, The other end of support frame as described above (31) and the removable rotation connection of flat board (10) composition, support frame as described above (31) and ladder (32) Rotating shaft is horizontal and is parallel to each other.

2. the anti-fall aerial work platform ladder of height adjustable according to claim 1, it is characterised in that：On the flat board (10) It is provided with the groove (11) for accommodating support frame (31) and ladder (32), one end of the ladder (32) and one end of support frame (31) Connected by connecting shaft (33), the other end of the ladder (32) is provided with rotating shaft (321) and the both sides of groove (11) rotate company Connect, the other end of support frame as described above (31), which is provided with neck (311) and formed with the lock shaft (111) that groove (11) avris is set, to be blocked Connect cooperation.

3. the anti-fall aerial work platform ladder of height adjustable according to claim 2, it is characterised in that：The neck (311) Top rotary type be provided with lock hook (312), the lock hook (312) forms clamping with lock shaft (111) or separates cooperation.

4. the anti-fall aerial work platform ladder of height adjustable according to claim 1, it is characterised in that：The installing mechanism bag The lead screw (60) set on flat board (10) is included, the lower end of the lead screw (60) is threadedly coupled with locating piece (61), the spiral shell The rod end that screw mandrel (60) stretches out locating piece (61) is provided with locking nut (62), and fixed arm is provided with the locating piece (61) (63), fixed arm (63) level overhangs and projecting end is provided with Limit screw (631), the Limit screw (631), fixes The bayonet socket of holding equipment channel-section steel (20) is formed between arm (63) and locating piece (61), baffle plate is provided with the locating piece (61) (611), the angle between the plate face of the baffle plate (611) and fixed arm (63) length direction is 90 °.

5. the anti-fall aerial work platform ladder of height adjustable according to claim 1, it is characterised in that：The fastener (50) The non-skid band (52) being located at including hoop on support column (40), the both ends of the non-skid band (52) are respectively with being connected the one of clasp (53) End connection, the other end both ends rotation connection with driven roller (54) respectively of the connection clasp (53), the connection clasp (53) it is arranged on driven roller with the rotation connection end of driven roller (54) and driven roller (54) roller core arranged off-centre, the link (51) (53) on.

6. the anti-fall aerial work platform ladder of height adjustable according to claim 5, it is characterised in that：The non-skid band (52) In shaft-like and be made up of elastomeric material, the body of roll stage casing of the driven roller (54) is provided with cantilever (541), and the link (51) sets Put the projecting end in cantilever (541).

7. the anti-fall aerial work platform ladder of height adjustable according to claim 6, it is characterised in that：The support column (40) Upper end be provided with Anti-off bolt (43), Anti-off bolt (43) length direction it is horizontal and with the upper end outer wall of support column (40) Screwed hole connection.

8. the anti-fall aerial work platform ladder of height adjustable according to claim 4, it is characterised in that：The flat board (10) Side is provided with clamping plate (12), and in frid shape and notch down, the medium position of the clamping plate (12) is set the clamping plate (12) There is the grafting block (13) being connected with support column (40), punching bolt (41), the punching spiral shell are provided with the support column (40) The rod end of bolt (41) is provided with the second clamp nut (42), and the both sides of the grafting block (13) are provided with limited block (131).

9. the anti-fall aerial work platform ladder of height adjustable according to claim 8, it is characterised in that：On the clamping plate (12) The bar hole (121) passed through for lead screw (30) is offered, the bar hole (121) is parallel with the length direction of clamping plate (12).