CN213923866U

CN213923866U - Movable cantilever crane

Info

Publication number: CN213923866U
Application number: CN202022442788.5U
Authority: CN
Inventors: 王首民
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-08-10
Anticipated expiration: 2030-10-29

Abstract

A movable cantilever crane relates to the technical field of hoisting equipment, and comprises a base, an upright post, a rotating frame and a cantilever beam; the four corner ends of the bottom of the base are respectively provided with a trundle, the center of the top of the base is provided with an upright post, the top of a post body of the upright post is rotatably connected with a rotating frame, the post body of the upright post positioned in the rotating frame is fixedly connected with a fixed wheel which is coaxial with the upright post correspondingly, and one side of the rotating frame corresponding to the fixed wheel is provided with a flexible friction driving wheel which can be matched with the fixed wheel to drive the rotating frame to rotate along the axis of the upright post and a motor for driving the flexible friction driving wheel; one end of a cantilever beam is fixedly connected to one side of the rotating frame, a trolley capable of moving back and forth along the length direction of the cantilever beam is mounted on a beam body of the cantilever beam, and a fixed pulley I is arranged at the end part, away from the rotating frame, of one end of the cantilever beam; the utility model discloses the current cantilever crane awkward problem has effectively been solved.

Description

Movable cantilever crane

Technical Field

The utility model belongs to the technical field of the jacking equipment technique and specifically relates to a portable cantilever crane is related to.

Background

As is known, the existing commonly used cantilever crane needs to be fixed on the ground with high strength, and a firm ground pile needs to be poured before installation, so that the structure limits the mobility of the cantilever crane, and thus, the cargo in many places which are not fixed cannot be hoisted by using the cantilever crane; the existing common vehicle-mounted crane has the defects of high manufacturing cost, large volume and high long-term operation and maintenance cost, and the phenomenon is a problem to be solved urgently by technical personnel in the field.

Disclosure of Invention

In order to overcome the deficiency in the background art, the utility model discloses a portable cantilever crane.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a movable cantilever crane comprises a base, an upright post, a rotating frame and a cantilever beam; the bottom of the base is provided with trundles, the center of the top of the base is provided with an upright post, the top of a post body of the upright post is rotatably connected with a rotating frame, the post body of the upright post positioned in the rotating frame is fixedly connected with a fixed wheel which is coaxial with the upright post correspondingly, and one side of the rotating frame corresponding to the fixed wheel is provided with a flexible friction driving wheel which can be matched with the fixed wheel to drive the rotating frame to rotate along the axis of the upright post and a motor for driving the flexible friction driving wheel; one side of the rotating frame is fixedly connected with one end of a cantilever beam, a trolley capable of moving back and forth along the length direction of the cantilever beam is mounted on a beam body of the cantilever beam, a fixed pulley I is arranged at the end part, away from the rotating frame, of the cantilever beam, an electric hoist I is mounted on one side, away from the cantilever beam, of the rotating frame, a winding drum of the electric hoist I is wound with a steel wire rope I, one rope head end of the steel wire rope I is correspondingly and fixedly connected with one side of the trolley after being wound with the fixed pulley I, and the other rope head end of the steel wire rope I is correspondingly and fixedly connected with the other side of the trolley; the below of dolly is equipped with the lifting hook through wire rope II, the cantilever beam corresponds the position of being connected with the swivel mount and is equipped with fixed pulley II, and the top of fixed pulley II is equipped with electric hoist II, the one end that deviates from the swivel mount with the cantilever beam of a rope end of wire rope II corresponds the fastening connection, and another rope end winding fixed pulley II of wire rope II back corresponds the winding with electric hoist II's reel and is connected.

Preferably, two transition wheels capable of being adjusted inwards are arranged between the fixed wheel and the flexible friction driving wheel at intervals.

Preferably, one side of the rotating frame, which is far away from the cantilever beam, is provided with a balancing weight.

Preferably, four corner ends at the top of the base are provided with lacing wires which are correspondingly and fixedly connected with the column body of the upright column.

Preferably, the body of the lacing wire is provided with a turn buckle for adjusting the tightness.

Preferably, the truckles are foot type truckles with adjustable feet, and inclined power-off switches are arranged corresponding to the position of the adjustable feet.

Preferably, the cantilever beam is a diagonal-pulling light cantilever structure beam.

Preferably, the motor is correspondingly in transmission connection with the flexible friction driving wheel through a speed reducer.

Preferably, four corner ends in base bottom all are equipped with the lower margin that can adjust, and one side of base bottom is equipped with two directional wheels, and the opposite side intermediate position is equipped with a universal wheel, and the base corresponds universal wheel one side and is equipped with the hanger that is convenient for correspond with the tractor and is connected.

Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:

the utility model discloses a movable cantilever crane, simple structure, easy assembly, manufacturing cost is lower, one side that corresponds the tight pulley in the swivel mount is equipped with can cooperate with the tight pulley to drive the swivel mount along the rotatory flexible friction drive wheel of stand axis to and be used for driving the motor of flexible friction drive wheel, namely the motor can drive the rotation of flexible friction drive wheel, there is frictional force between flexible friction drive wheel and the tight pulley, make the flexible friction drive wheel rotate around the tight pulley axis, thus can drive the swivel mount and rotate along the stand axis, simultaneously because the friction drive is between flexible friction drive wheel and the tight pulley, can appear skidding phenomenon between flexible friction drive wheel and the tight pulley when the revolving force overloads, thus avoid causing the accident because the revolving force overloads; two transition wheels capable of being adjusted inwards are arranged between the fixed wheel and the flexible friction driving wheel at intervals, namely the two transition wheels can be adjusted inwards, so that enough friction force is generated between the flexible friction driving wheel and the transition wheels and between the transition wheels and the fixed wheel, the structure is simple, and the adjustment is convenient;

in addition, four corner ends in base top all are equipped with the lacing wire that corresponds the fastening connection with the stand shaft, and the muscle body of lacing wire is equipped with the turn buckle that is used for adjusting the elasticity, the lacing wire can utilize the less round steel preparation of deflection, can effectively promote the structural strength and the stability of stand on the one hand, and on the other hand can reduce the diameter of stand, can reduce the used bearing of swivelling joint between stand and the swivel mount simultaneously to manufacturing cost has effectively been reduced.

Drawings

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

FIG. 2 is a schematic view of a mounting structure of a transition wheel;

FIG. 3 is a schematic view of the caster wheel;

fig. 4 is another structure diagram of the base.

In the figure: 1. a base; 2. a column; 3. a rotating frame; 4. a cantilever beam; 5. a caster wheel; 6. a fixed wheel; 7. a flexible friction drive wheel; 8. a motor; 9. a trolley; 10. a fixed pulley I; 11. an electric hoist I; 12. a steel wire rope I; 13. a steel wire rope II; 14. a hook; 15. a fixed pulley II; 16. an electric hoist II; 17. a transition wheel; 18. a balancing weight; 19. stretching a rib; 20. the power-off switch is tilted.

Detailed Description

The invention will be explained in more detail by the following examples, which disclose the invention and are intended to protect all technical improvements within the scope of the invention.

With reference to the attached drawings 1-4, the movable cantilever crane comprises a base 1, an upright post 2, a rotating frame 3 and a cantilever beam 4; the bottom of the base 1 is provided with trundles 5, the central position of the top of the base 1 is provided with a stand column 2, the top of the column body of the stand column 2 is rotatably connected with a rotating frame 3, the column body of the stand column 2 positioned in the rotating frame 3 is fixedly connected with a fixed wheel 6 which is coaxial with the stand column 2, one side of the rotating frame 3 corresponding to the fixed wheel 6 is provided with a flexible friction driving wheel 7 which can be matched with the fixed wheel 6 to drive the rotating frame 3 to rotate along the axis of the stand column 2, and a motor 8 for driving the flexible friction driving wheel 7, namely, the motor 8 can drive the flexible friction driving wheel 7 to rotate, friction force exists between the flexible friction driving wheel 7 and the fixed wheel 6, so that the flexible friction driving wheel 7 can rotate around the axis of the fixed wheel 6, the rotating frame 3 can be driven to rotate along the axis of the stand column 2, and friction transmission is realized between the flexible friction driving wheel 7 and the fixed wheel 6, when the rotating force is overloaded, the slipping phenomenon can occur between the flexible friction driving wheel 7 and the fixed wheel 6, so that accidents caused by the overload of the rotating force are avoided; according to the requirement, two transition wheels 17 capable of being adjusted inwards are arranged between the fixed wheel 6 and the flexible friction driving wheel 7 at intervals, namely the two transition wheels 17 can be adjusted inwards, so that adjustable friction force is generated between the flexible friction driving wheel 7 and the transition wheels 17 and between the transition wheels 17 and the fixed wheel 6, the structure is simple, and the adjustment is convenient; the motor 8 is correspondingly in transmission connection with the flexible friction driving wheel 7 through a speed reducer, so that the torque of the flexible friction driving wheel 7 can be effectively improved;

one side of the rotating frame 3 is fixedly connected with one end of a cantilever beam 4; according to the requirement, the cantilever beam 4 is a diagonal light cantilever structure beam, so that the weight can be effectively reduced, and meanwhile, the weight of a counterweight can be reduced; the trolley 9 capable of moving back and forth along the length direction of the cantilever beam 4 is mounted on the beam body of the cantilever beam 4, a fixed pulley I10 is arranged at one end part of the cantilever beam 4, which is far away from the rotating frame 3, an electric hoist I11 is mounted on one side of the rotating frame 3, which is far away from the cantilever beam 4, a steel wire rope I12 is wound on a winding drum of the electric hoist I11, one rope head end of the steel wire rope I12 is correspondingly and fixedly connected with one side of the trolley 9 after being wound on the fixed pulley I10, and the other rope head end of the steel wire rope I12 is correspondingly and fixedly connected with the other side of the trolley 9, namely the trolley 9 can be controlled to move forwards or backwards along the cantilever beam 4 by controlling the forward rotation or the reverse rotation of the electric hoist I11; a lifting hook 14 is arranged below the trolley 9 through a steel wire rope II 13, a fixed pulley II 15 is arranged at the position where the cantilever beam 4 is correspondingly connected with the rotating frame 3, an electric hoist II 16 is arranged above the fixed pulley II 15, one rope head end of the steel wire rope II 13 is correspondingly and tightly connected with one end, away from the rotating frame 3, of the cantilever beam 4, the other rope head end of the steel wire rope II 13 is correspondingly and tightly connected with a winding drum of the electric hoist II 16 after being wound with the fixed pulley II 15, and therefore the lifting of the lifting hook 14 can be controlled through the electric hoist II 16;

in addition, the four corner ends of the top of the base 1 are respectively provided with a tie bar 19 which is correspondingly fastened and connected with the column body of the upright column 2, the bar body of the tie bar 19 is provided with a turnbuckle for adjusting the tightness, the tie bar 19 can be made of round steel with smaller deformation, on one hand, the structural strength and the stability of the upright column 2 can be effectively improved, on the other hand, the diameter of the upright column 2 can be reduced, and simultaneously, a bearing for rotary connection between the upright column 2 and the rotating frame 3 can be reduced, so that the production cost is effectively reduced; a counterweight block 18 is arranged on one side of the rotating frame 3, which is far away from the cantilever beam 4, so that the stability of the whole machine can be effectively improved, and meanwhile, a counterweight can be arranged on the top of the base 1, so that the stability of the whole machine is further improved; the trundle 5 is a trundle with an adjustable foot, and the inclined power-off switch 20 is arranged at the position corresponding to the adjustable foot, so that the transfer of the whole machine can be carried out through the trundle 5, the foot can be adjusted after the positioned foot is reached, the base 1 is supported through the foot, the level of the base 1 is ensured, if the inclined power-off switch 20 detects that a certain angle end of the base 1 is away from the ground in the hoisting process, a power-off signal can be sent immediately, the hoisting is stopped, the accident of tipping over is prevented, and the safety performance is better; the adjustable lifting device is characterized in that adjustable feet are arranged at four corner ends of the bottom of the base 1, two directional wheels are arranged on one side of the bottom of the base 1, a universal wheel is arranged in the middle of the other side of the bottom of the base 1, a hanging tool convenient for being correspondingly connected with a tractor is arranged on one side of the base 1 corresponding to the universal wheel, namely the base 1 can be supported by the feet during lifting operation, and the base 1 is prevented from moving accidentally; when needs shift, can make directive wheel and universal wheel ground connection to make the hanger correspond with the tractor and be connected, thereby can shift simple structure, convenient to use through the tractor.

When the movable cantilever crane is used, the whole machine can be transferred through the trundles 5, the ground feet can be adjusted after the whole machine reaches the preset position, the base 1 is supported through the ground feet, the level of the base 1 is ensured, the trolley 9 is controlled to move forwards or backwards along the cantilever beam 4 by controlling the forward rotation or the reverse rotation of the electric hoist I11, and the lifting of the lifting hook 14 is controlled through the electric hoist II 16; when cantilever beam 4 need rotate in order to shift the heavy object, can be rotatory through motor 8 drive flexible friction drive wheel 7, there is frictional force between flexible friction drive wheel 7 and the tight pulley 6, make flexible friction drive wheel 7 can be rotatory around tight pulley 6 axis to can drive swivel mount 3 and rotate along stand 2 axes, and then make cantilever beam 4 can rotate around the axis of tight pulley 6.

The part of the utility model not detailed is prior art.

Claims

1. The utility model provides a portable cantilever crane, characterized by: comprises a base (1), a column (2), a rotating frame (3) and a cantilever beam (4); the base is characterized in that casters (5) are arranged at the bottom of the base (1), an upright post (2) is arranged at the center of the top of the base (1), the top of a post body of the upright post (2) is rotatably connected with a rotating frame (3), a post body of the upright post (2) positioned in the rotating frame (3) is fixedly connected with a fixed wheel (6) which is coaxial with the upright post (2) correspondingly, and one side of the rotating frame (3) corresponding to the fixed wheel (6) is provided with a flexible friction driving wheel (7) which can be matched with the fixed wheel (6) to drive the rotating frame (3) to rotate along the axis of the upright post (2) and a motor (8) for driving the flexible friction driving wheel (7); one side of the rotating frame (3) is fixedly connected with one end of a cantilever beam (4), a trolley (9) capable of moving back and forth along the length direction of the cantilever beam (4) is mounted on a beam body of the cantilever beam (4), a fixed pulley I (10) is arranged at the end part, away from the rotating frame (3), of the cantilever beam (4), an electric hoist I (11) is mounted on one side, away from the cantilever beam (3), of the rotating frame (3), a winding drum of the electric hoist I (11) is wound with a steel wire rope I (12), one rope head end of the steel wire rope I (12) is correspondingly and fixedly connected with one side of the trolley (9) after being wound with the fixed pulley I (10), and the other rope head end of the steel wire rope I (12) is correspondingly and fixedly connected with the other side of the trolley (9); the below of dolly (9) is equipped with lifting hook (14) through wire rope II (13), cantilever beam (4) correspond the position of being connected with swivel mount (3) and are equipped with fixed pulley II (15), and the top of this fixed pulley II (15) is equipped with electric hoist II (16), the one end that deviates from swivel mount (3) of a rope end and cantilever beam (4) of wire rope II (13) corresponds the fastening connection, and another rope end winding fixed pulley II (15) of wire rope II (13) back corresponds the winding with the reel of electric hoist II (16) and is connected.

2. The mobile jib crane of claim 1 wherein: two transition wheels (17) capable of being adjusted inwards are arranged between the fixed wheel (6) and the flexible friction driving wheel (7) at intervals.

3. The mobile jib crane of claim 1 wherein: and a balancing weight (18) is arranged on one side of the rotating frame (3) departing from the cantilever beam (4).

4. The mobile jib crane of claim 1 wherein: four corner ends at the top of the base (1) are provided with lacing wires (19) which are correspondingly and tightly connected with the column body of the upright column (2).

5. The mobile jib crane of claim 4 wherein: the body of the lacing wire (19) is provided with a turn buckle bolt for adjusting tightness.

6. The mobile jib crane of claim 1 wherein: the caster (5) is a caster with an adjustable foot, and an inclined power-off switch (20) is arranged corresponding to the position of the adjustable foot.

7. The mobile jib crane of claim 1 wherein: the cantilever beam (4) is a diagonal light cantilever structure beam.

8. The mobile jib crane of claim 1 wherein: the motor (8) is correspondingly in transmission connection with the flexible friction driving wheel (7) through a speed reducer.

9. The mobile jib crane of claim 1 wherein: four corner ends in base (1) bottom all are equipped with the lower margin that can adjust, and one side of base (1) bottom is equipped with two directional wheels, and the opposite side intermediate position is equipped with a universal wheel, and base (1) corresponds universal wheel one side and is equipped with the hanger that is convenient for correspond with the tractor and is connected.