Anti-falling mechanism of lifting device for chimney construction

Abstract

The utility model belongs to the technical field of lifting devices for chimney construction, and particularly relates to an anti-falling mechanism of a lifting device for chimney construction, which comprises a chimney body, a fixed circular truncated cone is mounted at the upper end of the chimney body, two vertical plates are fixedly arranged on the top surface of a rotating circular truncated cone, and a plurality of rotating shafts are rotatably arranged between the two vertical plates. A plurality of winding drums are fixedly arranged on the rotating shaft, steel wire ropes are wound on the winding drums, a lifting table is fixedly arranged at the ends of the steel wire ropes, one end of the rotating shaft penetrates through the vertical plate and is fixedly provided with a worm wheel, two connecting plates are fixedly arranged on the surface of one side of the vertical plate, and a main shaft is rotationally arranged between the two connecting plates; and a plurality of worms are fixedly arranged on the main shaft. The rotating shaft is positioned through the self-locking performance of the worm gear and the worm, so that the steel wire rope is positioned, and the lifting platform is prevented from being out of control and falling; and after a certain steel wire rope is broken, the lifting platform cannot fall due to the arrangement of the steel wire ropes, so that the safety is further improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to chimney construction lifting device technical field especially, it relates to a kind of anti-falling mechanism of chimney construction lifting device. BACKGROUND

[0002] In the chimney construction process, chimney construction lifting device is the core equipment of high-altitude operation.

[0003] However, the conventional lifting device protection structure is simple, there is a security risk, once the lifting platform falls, it will cause major safety accidents, therefore, a kind of anti-falling mechanism of chimney construction lifting device is needed to improve construction safety. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides an anti-falling mechanism of chimney construction lifting device, which solves the technical problems that the existing lifting device protection structure is simple, there is a security risk, and once the lifting platform falls, it will cause major safety accidents.

[0005] In order to achieve the above purpose, the utility model adopts the main technical scheme as follows:

[0006] An anti-falling mechanism of chimney construction lifting device, comprising a chimney body, a fixed circular table is installed on the upper end of the chimney body, a second opening is formed in the fixed circular table, a rotating circular table is rotatably provided on the top surface of the fixed circular table through a thrust bearing, a first opening is formed in the rotating circular table, two vertical plates are fixedly provided on the top surface of the rotating circular table, a plurality of rotating shafts are rotatably provided between the two vertical plates, a plurality of winding drums are fixedly provided on the rotating shafts, steel wires are wound around the winding drums, a lifting platform is fixedly provided at the ends of the steel wires penetrating through the first opening and the second opening, a worm gear is fixedly provided at one end of the rotating shaft penetrating through the vertical plate, two connecting plates are fixedly provided on one side surface of the vertical plate, a main shaft is rotatably provided between the two connecting plates, a plurality of worms are fixedly provided on the main shaft, and the worms are engaged with the worm gear.

[0007] Further, a driven gear is fixedly provided on the side surface of the rotating circular table, a support frame is fixedly provided on the side surface of the fixed circular table, a second speed reducer motor is fixedly provided on the support frame, a driving gear is fixedly provided at the driving end of the second speed reducer motor, and the driving gear is engaged with the driven gear.

[0008] Further, a support plate is fixedly provided on the side surface of the fixed circular table, a first hydraulic cylinder is fixedly provided on the support plate, a rack is fixedly provided at the telescopic end of the first hydraulic cylinder, and the rack can be engaged with the driven gear.

[0009] Further, a first speed reducer motor is fixedly provided on one side surface of the connecting plate, and one end of the main shaft is fixedly connected with the driving end of the first speed reducer motor.

[0010] Further, the fixed circular platform bottom surface is fixed with a plurality of vertical plates, the second hydraulic cylinders are fixed on the vertical plates, and the arc-shaped pressing plates are fixed on the second hydraulic cylinders.

[0011] Further, the arc-shaped pressing plates are provided with anti-skid pads.

[0012] Further, the lifting platform can pass through the first and second through holes.

[0013] The utility model has the advantages of:

[0014] 1. The plurality of arc-shaped pressing plates can be clamped to the chimney surface through the elongation of the plurality of second hydraulic cylinders, thereby positioning the fixed circular platform.

[0015] 2. The lifting platform can be lifted and lowered through the release or winding of the plurality of steel wires, thereby enabling the staff to perform construction on the inner wall of the chimney body.

[0016] 3. The worm gear is self-locked to position the rotating shaft, thereby positioning the steel wire and preventing the lifting platform from falling uncontrollably.

[0017] 4. When one steel wire breaks, the lifting platform will not fall due to the plurality of steel wires, thereby further improving the safety.

[0018] 5. The lifting platform can be rotated through the rotation of the circular platform, thereby facilitating the staff to perform construction on different positions of the inner wall of the chimney body. The rack can be engaged with the driven gear through the elongation of the first hydraulic cylinder, thereby positioning the rotating circular platform. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a three-dimensional schematic view of the utility model Figure 1 ;

[0020] Figure 2 is an enlarged schematic view of A in the utility model Figure 1 ;

[0021] Figure 3 is a three-dimensional schematic view of the utility model Figure 2 ;

[0022] Figure 4 is a three-dimensional schematic view of the utility model Figure 3 .

[0023] In the figure: 1, chimney body; 2, lifting platform; 3, steel wire rope; 4, fixed circular table; 5, support frame; 6, driving gear; 7, second speed reducer motor; 8, rotating circular table; 9, vertical plate; 10, winding drum; 11, rotating shaft; 12, rack; 13, first hydraulic cylinder; 14, support plate; 15, thrust bearing; 16, driven gear; 17, first through hole; 18, second through hole; 19, worm wheel; 20, worm; 21, connecting plate; 22, first speed reducer motor; 23, main shaft; 24, vertical plate; 25, second hydraulic cylinder; 26, arc-shaped pressing plate; 27, non-slip pad. DETAILED DESCRIPTION

[0024] In order to better explain the utility model, so as to facilitate understanding, the following will be combined with the specific embodiments, the utility model is described in detail.

[0025] As Figures 1-4 shown, the utility model provides a kind of anti-falling mechanism of chimney construction lifting device, including chimney body 1, the fixed circular table 4 is installed on chimney body 1 upper end, the fixed circular table 4 is equipped with second through hole 18, the fixed circular table 4 top is rotatably equipped with rotating circular table 8 by thrust bearing 15, rotating circular table 8 is equipped with first through hole 17, the rotating circular table 8 top is fixedly equipped with two vertical plates 9, a plurality of rotating shafts 11 are rotatably arranged between the two vertical plates 9, a plurality of winding drums 10 are fixedly arranged on rotating shaft 11, steel wire rope 3 is wound on winding drum 10, the end of a plurality of steel wire ropes 3 is fixedly arranged and is equipped with lifting platform 2 by first through hole 17 and second through hole 18, worm wheel 19 is fixedly arranged on one end of rotating shaft 11 by vertical plate 9, two connecting plates 21 are fixedly arranged on the surface of vertical plate 9 side, main shaft 23 is rotatably arranged between the two connecting plates 21, a plurality of worms 20 are fixedly arranged on main shaft 23, worm 20 is engaged with worm wheel 19;Rotating circular table 8 side surface is fixedly equipped with driven gear 16, support frame 5 is fixedly arranged on the surface of fixed circular table 4 side, second speed reducer motor 7 is fixedly arranged on support frame 5, driving end of second speed reducer motor 7 is fixedly equipped with driving gear 6, driving gear 6 is engaged with driven gear 16;The surface of fixed circular table 4 side is fixedly equipped with support plate 14, first hydraulic cylinder 13 is fixedly arranged on support plate 14, rack 12 is fixedly arranged on the telescopic end of first hydraulic cylinder 13, rack 12 can be engaged with driven gear 16;Connecting plate 21 side surface is fixedly equipped with first speed reducer motor 22, one end of main shaft 23 is fixedly connected with the driving end of first speed reducer motor 22;The bottom surface of fixed circular table 4 is fixedly equipped with a plurality of vertical plates 24, second hydraulic cylinder 25 is fixedly arranged on vertical plate 24, arc-shaped pressing plate 26 is fixedly arranged on the telescopic end of second hydraulic cylinder 25;Non-slip pad 27 is arranged on arc-shaped pressing plate 26;Lifting platform 2 can pass through first through hole 17 and second through hole 18.

[0026] When using, the fixed circular table 4 is installed on the upper end of the chimney body 1, a plurality of arc-shaped pressing plates 26 can be clamped to the surface of the chimney by the elongation of a plurality of second hydraulic cylinders 25, so as to position the fixed circular table 4.

[0027] The first speed reducer motor 22 is started to drive the main shaft 23 to rotate, the plurality of worms 20 are driven to rotate through the rotation of the main shaft 23, the plurality of worms 20 are driven to rotate through the rotation of the plurality of worms 20, the plurality of worm gears 19 are driven to rotate through the rotation of the plurality of worms 20, the plurality of rotating shafts 11 are driven to rotate through the rotation of the plurality of worm gears 19, the plurality of winding drums 10 are driven to rotate through the rotation of the plurality of rotating shafts 11, the plurality of steel wires 3 are released or wound through the rotation of the plurality of winding drums 10, the lifting platform 2 is lifted through the release or winding of the plurality of steel wires 3, and thus the staff can perform construction on the inner wall of the chimney body 1.

[0028] The rotating shaft 11 is positioned through the self-locking performance of the worm gear 19 and the worm 20, so that the steel wire 3 is positioned, and the lifting platform 2 is prevented from falling uncontrollably.

[0029] When a steel wire 3 is broken, the lifting platform 2 will not fall due to the plurality of steel wires 3, and the safety is further improved.

[0030] In order to facilitate the construction on different positions of the inner wall of the chimney body 1, when the lifting platform 2 needs to be rotated by a certain angle, the first hydraulic cylinder 13 is shortened to drive the rack 12 to move away from the driven gear 16, the second speed reducer motor 7 is started to drive the driving gear 6 to rotate, the driven gear 16 is driven to rotate through the rotation of the driving gear 6, the rotating circular platform 8 is driven to rotate through the rotation of the driven gear 16, and the lifting platform 2 is driven to rotate through the rotation of the rotating circular platform 8, so that the staff can perform construction on different positions of the inner wall of the chimney body 1.

[0031] The first hydraulic cylinder 13 is extended to drive the rack 12 to engage with the driven gear 16, so that the driven gear 16 is positioned, and the rotating circular platform 8 is positioned.

[0032] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the modification, replacement and variation of the above-mentioned embodiments by the ordinary skilled in the art all belong to the range of the utility model.

Claims

1. A fall protection mechanism for a lifting device for chimney construction, comprising a chimney body (1), characterized in that, The chimney body (1) upper end is provided with a fixed circular table (4), the fixed circular table (4) is provided with a second opening (18), the fixed circular table (4) top surface is rotatably provided with a rotating circular table (8) through a thrust bearing (15), the rotating circular table (8) is provided with a first opening (17), the rotating circular table (8) top surface is fixedly provided with two vertical plates (9), a plurality of rotating shafts (11) are rotatably arranged between the two vertical plates (9), a plurality of winding drums (10) are fixedly arranged on the rotating shafts (11), steel wires (3) are wound on the winding drums (10), a plurality of the steel wires (3) end portions are fixedly provided with a lifting platform (2) penetrating the first opening (17) and the second opening (18), one end of the rotating shaft (11) is fixedly provided with a worm wheel (19) penetrating the vertical plate (9), two connecting plates (21) are fixedly arranged on one side surface of the vertical plate (9), a main shaft (23) is rotatably arranged between the two connecting plates (21), a plurality of worm gears (20) are fixedly arranged on the main shaft (23), and the worm gears (20) are engaged with the worm wheel (19).

2. A fall arrest mechanism for a chimney construction hoist according to claim 1, characterised in that, The rotating circular table (8) side surface is fixedly provided with a driven gear (16), the fixed circular table (4) side surface is fixedly provided with a support frame (5), the support frame (5) is fixedly provided with a second speed reducer motor (7), the second speed reducer motor (7) driving end is fixedly provided with a driving gear (6), and the driving gear (6) is engaged with the driven gear (16).

3. A fall arrest mechanism for a chimney construction hoist according to claim 2, characterised in that, The fixed circular table (4) side surface is fixedly provided with a support plate (14), the support plate (14) is fixedly provided with a first hydraulic cylinder (13), and the first hydraulic cylinder (13) telescopic end is fixedly provided with a rack (12) capable of being engaged with the driven gear (16).

4. A fall arrest mechanism for a chimney construction hoist according to claim 1, characterised in that, One side surface of the connecting plate (21) is fixedly provided with a first speed reducer motor (22), and one end of the main shaft (23) is fixedly connected with the first speed reducer motor (22) driving end.

5. A fall arrest mechanism for a chimney construction hoist according to claim 1, characterised in that, The fixed circular table (4) bottom surface is fixedly provided with a plurality of vertical plates (24), the vertical plates (24) are fixedly provided with second hydraulic cylinders (25), and the second hydraulic cylinders (25) telescopic ends are fixedly provided with arc-shaped pressing plates (26).

6. A fall arrest mechanism for a chimney construction hoist according to claim 5, characterised in that, The arc-shaped pressing plate (26) is provided with a non-slip pad (27).

7. A fall arrest device for chimney construction hoists according to claim 1, characterised in that, The lifting platform (2) can penetrate the first opening (17) and the second opening (18).

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