阅读说明：本技术 一种防坠落吊机 (Anti-falling crane ) 是由 邵维嘉 沈熠 于 2021-06-25 设计创作，主要内容包括：本发明涉及吊机技术领域,具体为一种防坠落吊机。一种防坠落吊机,包括固定底座、固定板、固定轴、支撑杆和清扫刷,所述固定底座上螺栓安装有固定撑柱,固定撑柱的顶端转动连接有吊臂本体,所述吊臂本体上转动连接有液压部件,液压部件的底端转动连接在固定撑柱上,所述吊臂本体上焊接固定有螺纹定位条,螺纹定位条上转动连接有固定板,本发明的有益效果是：该防坠落吊机,在现有的基础上进行改进,利用双向螺纹杆的转动,结合安装杆和固定轮能够推动支撑杆向下运动,此时支撑杆结合导向杆和导向槽能够带动转动轴稳定转动,结合转动盘和清扫刷能够将支撑位置进行自动转动清扫工作,进而能够防止支撑位置存在过多杂质导致支撑不平稳。(The invention relates to the technical field of cranes, in particular to a falling-prevention crane. The invention discloses an anti-falling crane which comprises a fixed base, a fixed plate, a fixed shaft, a supporting rod and a cleaning brush, wherein a fixed support column is installed on the fixed base through a bolt, the top end of the fixed support column is rotatably connected with a crane arm body, a hydraulic component is rotatably connected onto the crane arm body, the bottom end of the hydraulic component is rotatably connected onto the fixed support column, a thread positioning strip is welded and fixed onto the crane arm body, and the fixed plate is rotatably connected onto the thread positioning strip. This loop wheel machine of falling prevents improves on current basis, utilizes the rotation of two-way threaded rod, combines installation pole and tight pulley to promote the bracing piece downstream, and the bracing piece combines guide bar and guide way to drive the axis of rotation and stabilize the rotation this moment, combines rolling disc and cleaning brush to carry out the automatic rotation with the holding position and cleans the work, and then can prevent that the holding position from having too much impurity to lead to supporting unstably.)

1. The utility model provides a prevent loop wheel machine that falls, its characterized in that, includes unable adjustment base (1), fixed plate (6), fixed axle (13), bracing piece (20) and brush cleaner (27), bolted mounting has fixedly to prop post (2) on unable adjustment base (1), and the top of fixedly propping post (2) is rotated and is connected with davit body (3), rotate on davit body (3) and be connected with hydraulic part (4), the bottom of hydraulic part (4) is rotated and is connected on fixedly propping post (2), welded fastening has screw thread location strip (5) on davit body (3), rotates on screw thread location strip (5) and is connected with fixed plate (6), has seted up draw-in groove (7) and mounting hole (28) on fixed plate (6), and welded fastening has connecting rod (29) on fixed plate (6).

2. The fall-preventing crane according to claim 1, characterized in that a universal wheel (15) is bolted on the bottom end of the fixed base (1), a small servo motor (16) is fixed in the fixed base (1) by welding, the output end of the small servo motor (16) is connected with a two-way threaded rod (17), the two-way threaded rod (17) is rotatably connected in the fixed base (1), a mounting rod (18) is movably connected on the two-way threaded rod (17), a fixed wheel (19) is rotatably connected on the bottom end of the mounting rod (18), a support rod (20) is slidably connected on the fixed base (1) in a spacing manner, a support base (21) is fixedly welded on the bottom end of the support rod (20), a rubber rod (22) is connected on the support base (21) by screw, the top end of the rubber rod (22) is connected on the fixed base (1) by screw, a guide rod (23) is fixedly welded on the support, spacing sliding connection is in guide way (25) on guide bar (23), and guide way (25) are seted up on axis of rotation (24), and axis of rotation (24) rotate to be connected on unable adjustment base (1), and the bottom welded fastening of axis of rotation (24) has rolling disc (26), and the bottom screwed connection of rolling disc (26) has cleaning brush (27).

3. The fall-preventing crane according to claim 1, characterized in that the fixed support column (2) is rotatably connected with a fixed knob (8), the bottom end of the fixed knob (8) is welded and fixed with a first bevel gear (9), the first bevel gear (9) is engaged with a second bevel gear (10), the second bevel gear (10) is welded and fixed at the bottom end of a one-way threaded rod (11), the one-way threaded rod (11) is rotatably connected in the fixed support column (2), the one-way threaded rod (11) is movably connected with a sliding block (12), the sliding block (12) is in the fixed support column (2) in a limiting sliding manner, the sliding block (12) is welded and fixed with a fixed shaft (13), the fixed shaft (13) is in the limiting sliding chute (14), and the limiting sliding chute (14) is arranged on the fixed support column (2).

4. The fall protection crane according to claim 1, characterized in that the fixing plates (6) are symmetrically distributed on the left and right sides of the connecting rod (29), the connecting rod (29) is in one-to-one correspondence with the mounting holes (28), the distance between the fixing plates (6) on the two sides is smaller than the length of the thread positioning strip (5), the diameter of the thread positioning strip (5) is smaller than the diameter of the inner space of the mounting hole (28), the thread positioning strip (5) and the fixing plates (6) form a dismounting and mounting structure through nuts in threaded connection, clamping grooves (7) are equidistantly distributed on the fixing plates (6), and the inner space of the clamping grooves (7) is in a right triangle shape.

5. The machine of claim 3, characterized in that the one-way threaded rod (11) is in threaded connection with the sliding block (12), the one-way threaded rod (11) is connected to the middle part of the sliding block (12), the outer end surface of the sliding block (12) is attached to the inner wall of the fixed stay (2), and the length of the one-way threaded rod (11) is greater than that of the limiting sliding groove (14).

6. The machine of claim 3, characterized in that the left and right sides of the sliding block (12) are symmetrically distributed with fixed shafts (13), the fixed shafts (13) are fixed at the middle part of the sliding block (12), the distance between the top ends of the fixed shafts (13) at both sides is larger than the distance between the fixed plates (6) at both sides, and the distance between the fixed plates (6) at both sides is larger than the width of the fixed support column (2).

7. The machine of claim 2, characterized in that the two-way threaded rod (17) is in threaded connection with the mounting rods (18), the mounting rods (18) are symmetrically distributed on the left and right sides of the two-way threaded rod (17), the mounting rods (18) are in one-to-one correspondence with the supporting rods (20) through the fixed wheels (19), the top end surface of the mounting rods (18) is attached to the top end surface inside the fixed base (1), the top end surface of the supporting rods (20) is inclined, and the central axis of the supporting rods (20) and the central axis of the supporting base (21) are located on the same vertical central line.

8. The machine of claim 2, characterized in that the rubber rods (22) are distributed on the support base (21) at equal angles, the diameter of the support base (21) is larger than that of the rotating disc (26), the cleaning brushes (27) are distributed on the rotating disc (26) at equal angles, the bottom end surfaces of the cleaning brushes (27) and the bottom end surface of the universal wheel (15) are positioned on the same horizontal plane, the top of the guide groove (25) is in a threaded shape, the bottom of the guide groove (25) is in a linear shape, the length of the spiral guide groove (25) is smaller than the maximum movement distance of the support rod (20), the inner wall of the guide groove (25) is attached to the outer end surface of the guide rod (23), and the top of the guide rod (23) is in a spherical shape.

Technical Field

The invention relates to the technical field of cranes, in particular to a falling-prevention crane.

Background

The crane is indispensable equipment in modern industrial production, is widely used in places such as factories, ports, construction sites, mines, railways, hotels, residential buildings and the like, and completes construction and operation of lifting, transporting, loading and unloading, installing, personnel conveying and the like of various materials, thereby greatly reducing the labor intensity of physical force, improving the labor productivity and improving the life quality of people. Some cranes can also carry out certain special process operations in production, and the cranes are customized to the industry and machinery in Xinxiang city, so that the production process is easier to realize mechanization and automation:

and engine loop wheel machine does not have fine mechanism of preventing falling in the course of the work in the existing market, once the hydraulic pressure part that is used for rising to rise became invalid, the loop wheel machine load can fall fast very easily, and the loop wheel machine can not the safe and stable prevention load fall, and then very easily causes harm to machinery and staff.

Disclosure of Invention

The invention provides a falling prevention crane aiming at the technical problems in the prior art, and aims to solve the problem that no good falling prevention mechanism exists in the engine crane in the market in the working process.

The technical scheme for solving the technical problems is as follows: the utility model provides a prevent loop wheel machine that falls, includes unable adjustment base, fixed plate, fixed axle, bracing piece and brush cleaner, unable adjustment base is last bolted mounting to be fixed prop the post, and the top of fixed post of propping is rotated and is connected with the davit body, rotate on the davit body and be connected with hydraulic part, the bottom of hydraulic part is rotated and is connected on fixed post of propping, welded fastening has the screw thread location strip on the davit body, rotates on the screw thread location strip and is connected with the fixed plate, has seted up draw-in groove and mounting hole on the fixed plate, and welded fastening has the connecting rod on the fixed plate.

The invention has the beneficial effects that:

1) the anti-falling crane is better in effect, the anti-falling crane is improved on the existing basis, the anti-falling structure safety structure is formed by the fixing support columns, the thread positioning strips, the fixing plate, the clamping grooves and the fixing shafts, when a load is hoisted by the crane arm body, the thread positioning strips can drive the clamping grooves in the fixing plate to be firmly matched with the fixing shafts, when a hydraulic component fails, the fixing shafts on the fixing support columns are stably clamped into the clamping grooves in the fixing plate, the load can be conveniently and effectively prevented from rapidly falling, the anti-falling crane is convenient to use, applicable to most cranes, wide in application range, capable of being produced in batches, and the use safety and stability of the crane are improved.

2) The anti-falling crane has a better effect, the device utilizes the rotation of the bidirectional threaded rod, and the installation rod and the fixed wheel are combined to push the support rod to move downwards, at the moment, the support rod can drive the rotating shaft to stably rotate by combining the guide rod and the guide groove, and the support position can be automatically rotated and cleaned by combining the rotating disc and the cleaning brush, so that the support position can be effectively prevented from being unstably supported due to excessive impurities, and the use stability and the safety of the crane are improved;

3) the anti-falling crane has better effect, and the device can lift the whole crane to the universal wheel to be dragged away from the ground by combining the supporting base under the action of downward movement of the supporting rod, so that the stability of the placement state of the follow-up crane can be ensured, and the safety and the stability of the load work of the follow-up crane can be ensured.

On the basis of the technical scheme, the invention can be further improved as follows.

Furthermore, a universal wheel is arranged on the bottom end of the fixed base through a bolt, a small servo motor is fixedly welded in the fixed base, the output end of the small servo motor is connected with a bidirectional threaded rod, the bidirectional threaded rod is rotatably connected in the fixed base, the bidirectional threaded rod is movably connected with an installation rod, the bottom end of the installation rod is rotatably connected with a fixed wheel, the fixed base is connected with a support rod in a limiting and sliding way, the bottom end of the support rod is fixedly welded with a support base, a rubber rod is connected on the support base by a screw, the top end of the rubber rod is connected on the fixed base by a screw, welded fastening has the guide bar on the bracing piece, and spacing sliding connection is in the guide way on the guide bar, and the guide way is seted up in the axis of rotation, and the axis of rotation rotates to be connected on unable adjustment base, and the bottom welded fastening of axis of rotation has the rolling disc, and the bottom screwed connection of rolling disc has the brush cleaner.

The beneficial effect who adopts above-mentioned further scheme is, can guarantee the stability of brush cleaner at the rolling disc work effect, and then can the automatic clear place the impurity of position, increased the use variety and the stability of loop wheel machine.

Further, it is connected with fixed knob to rotate on the fixed support post, and fixed knob's bottom welded fastening has first conical gear, and the meshing is connected with second conical gear on the first conical gear, and second conical gear welded fastening is in the bottom of one-way threaded rod, and one-way threaded rod rotates to be connected in fixed support post, swing joint has the sliding block on the one-way threaded rod, and the spacing sliding connection of sliding block is in fixed support post, and welded fastening has the fixed axle on the sliding block, and the spacing sliding connection of fixed axle is in spacing spout, and spacing spout is seted up on fixed support post.

Adopt above-mentioned further scheme's beneficial effect be, can conveniently control the sliding block on the one-way threaded rod and carry out stable slip work in fixed dagger, and then the operating position of regulation fixed axle that can be convenient stable.

Further, fixed plate symmetric distribution is in the left and right sides of connecting rod, connecting rod and mounting hole one-to-one, and the distance between the fixed plate of both sides is less than the length of screw thread location strip, and the diameter of screw thread location strip is less than the inner space diameter of mounting hole, and screw thread location strip constitutes through threaded connection's nut and fixed plate and dismantles mounting structure, and the equidistance distributes on the fixed plate has the draw-in groove, and the inner space of draw-in groove is right angled triangle.

The beneficial effect who adopts above-mentioned further scheme is, can guarantee the stability of draw-in groove working effect on the fixed plate, has increased the use variety and the stability of loop wheel machine.

Further, be threaded connection between one-way threaded rod and the sliding block, one-way threaded rod connects at the middle part of sliding block, and the outer terminal surface of sliding block laminates with the inner wall of fixed stay post mutually, and the length of one-way threaded rod is greater than the length of spacing spout, the left and right sides symmetric distribution of sliding block has the fixed axle, and the fixed axle is fixed at the middle part of sliding block, and the distance between the fixed axle top of both sides is greater than the distance between the fixed plate of both sides, and the distance between the fixed plate of both sides is greater than the width of fixed stay post.

Adopt above-mentioned further scheme's beneficial effect be, can effectively avoid the fixed plate of both sides to fixed dagger and fixed axle's harmful effects, and then can guarantee the stability of follow-up mechanism's that prevents falling work.

Furthermore, the bidirectional threaded rod is in threaded connection with the installation rod, the installation rods are symmetrically distributed on the left side and the right side of the bidirectional threaded rod, the installation rods correspond to the support rods one by one through the fixed wheels, the top end face of the installation rods is attached to the top end face inside the fixed base, the top end face of the support rods is in an inclined shape, the central axis of the support rods and the central axis of the support base are located on the same vertical central line, the rubber rods are distributed on the support base in an equal angle mode, the diameter of the support base is larger than that of the rotating disc, the rotating disc is provided with the cleaning brushes in an equal angle mode, the bottom end faces of the cleaning brushes and the bottom end faces of the universal wheels are located on the same horizontal plane, the top of the guide groove is in a threaded shape, the bottom of the guide groove is in a linear shape, the length of the spiral guide groove is smaller than the maximum movement distance of the support rods, and the inner wall of the guide groove is attached to the outer end face of the guide rod, the top of the guide rod is spherical.

Adopt above-mentioned further scheme's beneficial effect be, can guarantee that the guide bar can promote the axis of rotation through the heliciform guide way and carry out stable rotation work, and then can guarantee the automatic cleaning work of follow-up position of placing.

Drawings

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

FIG. 2 is a schematic perspective view of a suspension arm body according to the present invention;

FIG. 3 is a schematic top view of the thread positioning strip of the present invention;

FIG. 4 is a perspective view of a fixing plate according to the present invention;

FIG. 5 is a schematic view of the structure at A in FIG. 1 according to the present invention;

FIG. 6 is a schematic perspective view of the fixing brace of the present invention;

FIG. 7 is a schematic view of the construction of the bi-directional threaded rod of the present invention;

FIG. 8 is a schematic diagram of the structure of FIG. 7 at B in accordance with the present invention;

FIG. 9 is a perspective view of a rotating shaft according to the present invention;

FIG. 10 is a schematic top view of the support base of the present invention;

FIG. 11 is a schematic top view of the rotatable disk of the present invention;

FIG. 12 is a schematic view of a stationary shaft structure according to the present invention;

FIG. 13 is a side view of the slider of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a fixed base; 2. fixing a support column; 3. a boom body; 4. a hydraulic component; 5. a threaded locating bar; 6. a fixing plate; 7. a card slot; 8. fixing the knob; 9. a first bevel gear; 10. a second bevel gear; 11. a one-way threaded rod; 12. a slider; 13. a fixed shaft; 14. a limiting chute; 15. a universal wheel; 16. a small-sized servo motor; 17. a bidirectional threaded rod; 18. mounting a rod; 19. a fixed wheel; 20. a support bar; 21. a support base; 22. a rubber rod; 23. a guide bar; 24. a rotating shaft; 25. a guide groove; 26. rotating the disc; 27. cleaning with a brush; 28. mounting holes; 29. a connecting rod.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

The engine crane in the existing market does not have a good anti-falling mechanism in the working process, once a hydraulic component used for lifting is invalid, the load of the crane can easily and quickly fall, the crane can not safely and stably prevent the load from falling, and then the damage to machinery and workers is extremely easy to cause.

And conventional loop wheel machine can not carry out the rigidity of stabilizing safety in the course of the work, and then can not guarantee the stability and the safety of the follow-up load work of loop wheel machine, can not carry out the automatic cleaning work to placing the position simultaneously, when placing the position and having a large amount of impurity, can influence the work stationarity of loop wheel machine, and then can not guarantee the stability and the safety of follow-up load work, has proposed a fall-proof loop wheel machine to this inventor and has solved above-mentioned problem.

The present invention provides the following preferred embodiments

As shown in fig. 1-6, a fall-preventing crane comprises a fixed base 1, a fixed plate 6, a fixed shaft 13, a support rod 20 and a cleaning brush 27, wherein a fixed support column 2 is mounted on the fixed base 1 by bolts, the top end of the fixed support column 2 is rotatably connected with a suspension arm body 3, a hydraulic component 4 is rotatably connected on the suspension arm body 3, the bottom end of the hydraulic component 4 is rotatably connected on the fixed support column 2, a thread positioning strip 5 is welded and fixed on the suspension arm body 3, the fixed plate 6 is rotatably connected on the thread positioning strip 5, a clamping groove 7 and a mounting hole 28 are formed on the fixed plate 6, connecting rods 29 are welded and fixed on the fixed plate 6, the fixed plates 6 are symmetrically distributed on the left side and the right side of the connecting rods 29, the connecting rods 29 are in one-to-one correspondence with the mounting holes 28, the distance between the fixed plates 6 on the two sides is smaller than the length of the thread positioning strip 5, the diameter of the thread positioning strip 5 is smaller than the diameter of the inner space of the mounting hole 28, the screw thread locating strip 5 forms the dismantlement mounting structure through threaded connection's nut and fixed plate 6, and the equidistant distribution has draw-in groove 7 on the fixed plate 6, and the inner space of draw-in groove 7 is right angled triangle, can guarantee the stability and the convenience of installation dismantlement between fixed plate 6 and the screw thread locating strip 5, and then can guarantee the security and the stability of follow-up loop wheel machine work.

In this embodiment, as shown in fig. 1 and fig. 7-11, in order to further improve the placement stability of the crane, a universal wheel 15 is installed on a bottom bolt of the fixing base 1, a small servo motor 16 is welded and fixed in the fixing base 1, an output end of the small servo motor 16 is connected with a bidirectional threaded rod 17, the bidirectional threaded rod 17 is rotatably connected in the fixing base 1, an installation rod 18 is movably connected on the bidirectional threaded rod 17, a fixed wheel 19 is rotatably connected at a bottom end of the installation rod 18, a support rod 20 is slidably connected at an upper limit position on the fixing base 1, a support base 21 is welded and fixed at a bottom end of the support rod 20, a rubber rod 22 is screwed on the support base 21, a top end of the rubber rod 22 is screwed on the fixing base 1, a guide rod 23 is welded and fixed on the support rod 20, an upper limit position on the guide rod 23 is slidably connected in a guide groove 25, the guide groove 25 is opened on a rotating shaft 24, rotation axis 24 rotates to be connected on unable adjustment base 1, the bottom welded fastening of rotation axis 24 has rolling disc 26, the bottom screwed connection of rolling disc 26 has cleaning brush 27, be threaded connection on the two-way threaded rod 17 between and the installation pole 18, installation pole 18 symmetric distribution is in the both sides of the left and right sides of two-way threaded rod 17, installation pole 18 passes through tight pulley 19 and bracing piece 20 one-to-one, the top terminal surface of installation pole 18 laminates with unable adjustment base 1 inside top terminal surface mutually, the slope form is personally submitted on the top of bracing piece 20, the central axis of bracing piece 20 is located same vertical central line with the central axis that supports base 21, can guarantee to support base 21 the stability of operating condition in bracing piece 20 bottom, the stability in use of supporting base 21 has been increased.

In this embodiment, as shown in fig. 1, fig. 5, fig. 6, fig. 12 and fig. 13, in order to further improve the stable adjustment operation of the anti-falling mechanism, a fixed knob 8 is rotatably connected to a fixed post 2, a first bevel gear 9 is fixedly welded to the bottom end of the fixed knob 8, a second bevel gear 10 is connected to the first bevel gear 9 in a meshing manner, the second bevel gear 10 is fixedly welded to the bottom end of a one-way threaded rod 11, the one-way threaded rod 11 is rotatably connected to the fixed post 2, a sliding block 12 is movably connected to the one-way threaded rod 11, the sliding block 12 is slidably connected to the fixed post 2 in a limiting manner, a fixed shaft 13 is fixedly welded to the sliding block 12, the fixed shaft 13 is slidably connected to a limiting sliding groove 14, the limiting sliding groove 14 is disposed on the fixed post 2, so as to conveniently control the sliding block 12 to perform stable limiting sliding operation in the fixed post 2, the use stability and the safety of the crane are improved.

In this embodiment, as shown in fig. 1 and fig. 7 to 11, in order to further improve the placement stability of the crane, threaded connection is formed between the one-way threaded rod 11 and the sliding block 12, the one-way threaded rod 11 is connected to the middle of the sliding block 12, the outer end surface of the sliding block 12 is attached to the inner wall of the fixed strut 2, the length of the one-way threaded rod 11 is greater than the length of the limiting sliding chute 14, the left and right sides of the sliding block 12 are symmetrically provided with the fixed shafts 13, the fixed shafts 13 are fixed to the middle of the sliding block 12, the distance between the top ends of the two-side fixed shafts 13 is greater than the distance between the two-side fixed plates 6, the distance between the two-side fixed plates 6 is greater than the width of the fixed strut 2, it can be ensured that the two-side fixed plates 6 can be stably clamped on the fixed shafts 13, and adverse effects of the fixed strut 2 on the fixed plates 6 can be effectively avoided.

In this embodiment, as shown in fig. 1 and fig. 7 to fig. 11, in order to further improve the placement stability of the crane, the rubber rods 22 are distributed on the support base 21 at equal angles, the diameter of the support base 21 is greater than that of the rotating disc 26, the cleaning brushes 27 are distributed on the rotating disc 26 at equal angles, the bottom end surfaces of the cleaning brushes 27 and the bottom end surfaces of the universal wheels 15 are located on the same horizontal plane, the top of the guide groove 25 is in a thread shape, the bottom of the guide groove 25 is in a straight line shape, the length of the spiral guide groove 25 is smaller than the maximum movement distance of the support rod 20, the inner wall of the guide groove 25 is attached to the outer end surface of the guide rod 23, and the top of the guide rod 23 is in a spherical shape, so that the top of the guide rod 23 can perform stable sliding operation in the guide groove 25, and further, the rotation operation of the rotation shaft 24 can be pushed to be stable.

The specific working process of the invention is as follows:

(1) anti-falling crane

In the working process of the crane, the hydraulic component 4 on the fixed support column 2 can be combined with the suspension arm body 3 to lift the load, because the crane is generally used, the initial height is generally a certain height above the ground, and when the suspension arm body 3 lifts with the load, the suspension arm body 3 can drive the fixed plates 6 on two sides to synchronously lift together through the thread positioning strip 5 and the connecting rod 29, meanwhile, the clamping groove 7 on the fixed plate 6 is always firmly matched with the fixed shaft 13 on the fixed support column 2, at the moment, the fixed shaft 13 is contacted with the inclined surface of the clamping groove 7, so that the stability of the lifting work of the fixed plate 6 can be ensured, when the hydraulic component fails, the load and the suspension arm body 3 can descend, at the moment, the clamping groove 7 on the fixed plate 6 can be stably clamped into the fixed shaft 13 on the fixed support column 2, at the moment, the fixed shaft 13 is clamped with the right-angle surface of the clamping groove 7, can prevent effectively that davit body 3 and load from continuing to descend, and then can guarantee the safety and the stability of follow-up loop wheel machine load work, and prevent falling the mechanism of falling on the loop wheel machine at the course of the work, staff's accessible rotates fixed knob 8 and can drive first conical gear 9 and rotate, first conical gear 9 can drive one-way threaded rod 11 through second conical gear 10 that the meshing is connected this moment and carry out stable rotation work in fixed prop 2, at this moment under one-way threaded rod 11's rotating action, can drive fixed axle 13 and carry out the steady slip in fixed prop 2's spacing spout 14 through sliding block 12, and then can be convenient stable adjusts the position of use of fixed axle 13, and then can guarantee the job stabilization nature of follow-up mechanism of falling.

(2) Placing position of cleaning crane

When the crane starts to work, the universal wheel 15 can be used in combination to adjust the working position of the crane, and when the crane needs to lift load, a worker can control to open the small servo motor 16 on the fixed base 1, at this time, the small servo motor 16 can drive the bidirectional threaded rod 17 to stably rotate, and the bidirectional threaded rod 17 can drive each mounting rod 18 to stably move in the fixed base 1, at this time, the mounting rod 18 can drive each supporting rod 20 to simultaneously move downwards in combination with the fixed wheel 19 at the bottom of the mounting rod 18, and during the movement of the supporting rod 20, the guide rod 23 can be driven to move in the guide groove 25 on the rotating shaft 24, at this time, under the movement of the guide rod 23, the spiral guide groove 25 can drive the rotating shaft 24 to stably rotate on the fixed base 1 in combination with the spiral guide groove 25, and then can drive rolling disc 26 and stably rotate, and rolling disc 26 combines the supporting position that will support base 21 that each brush 27 can be convenient stable to clean the work fast this moment, can prevent effectively that ground impurity from too much leading to the loop wheel machine to support unstably, has increased the stability in use and the security of loop wheel machine.

(3) Stably-placed crane

And can drive the support base 21 of its bottom steady motion downwards in the bracing piece 20 downstream process, and before support base 21 moves to contacting with ground, guide bar 23 on bracing piece 20 can move to breaking away from heliciform guide way 25, and move to vertical form guide way 25 in, the rolling disc 12 of axis of rotation 24 bottom can rotate to the primary importance under the effect of guide way 11 this moment, support base 8 and continue downstream and cover rolling disc 12 afterwards, each support base 8 can move to contacting with ground this moment, and lift up the whole loop wheel 15 of loop wheel machine through unable adjustment base 1 and drag from ground, the loop wheel machine can carry out stable work of placing this moment, and then can guarantee the stability and the safety of follow-up load lifting operating condition.

To sum up: the invention has the beneficial effects that the device is improved on the basis of the prior art, the anti-falling structure safety structure consisting of the fixed support column 2, the thread positioning strip 5, the fixed plate 6, the clamping groove 7 and the fixed shaft 13 is utilized, when the suspension arm body 3 lifts a load, the thread positioning strip 5 can drive the clamping groove 7 on the fixed plate 6 to be firmly matched with the fixed shaft 13, when the hydraulic component 4 fails, the fixed shaft 13 on the fixed support column 2 is stably clamped into the clamping groove 7 on the fixed plate 6, the load can be conveniently and effectively prevented from falling rapidly, and the use safety and the stability of the crane are improved.

The device utilizes the rotation of two-way threaded rod 17, combines installation pole 18 and tight pulley 19 can promote bracing piece 20 downstream, and bracing piece 20 combines guide bar 23 and guide way 25 to drive axis of rotation 24 and stabilize the rotation this moment, combines rolling disc 26 and brush cleaner 27 can carry out the automatic rotation with the holding position and clean the work, and then can effectively prevent that the holding position from having too much impurity to lead to supporting unstably, has increased the stability in use and the security of loop wheel machine.

When the device is in use, under the effect of the downward movement of the supporting rod 20, the combined supporting base 21 can lift up the whole crane to the universal wheel 15 and drag away from the ground, so that the stability of the placement state of the subsequent crane can be ensured, and the safety and stability of the load work of the subsequent crane can be further ensured.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.