CN218114865U

CN218114865U - Trackless rotary overturn-preventing mechanism

Info

Publication number: CN218114865U
Application number: CN202221873543.0U
Authority: CN
Inventors: 黄浩; 杨孝先
Original assignee: Hefei Kiwi Heavy Machinery Co ltd
Current assignee: Hefei Kiwi Heavy Machinery Co ltd
Priority date: 2022-07-19
Filing date: 2022-07-19
Publication date: 2022-12-23
Anticipated expiration: 2032-07-19

Abstract

The utility model relates to a portable cantilever crane technical field specifically discloses trackless rotatory mechanism of preventing toppling, including the walking dolly, a column, the cantilever, lift by crane calabash and slewer, the top surface vertical fixation of rotor arm inner end has the pivot, the outer end of rotor arm is fixed with the end post along vertical direction, three side cavity has evenly been seted up to the periphery wall of walking dolly, the pivot corresponds respectively to rotate and installs in a tip of side cavity, the position vertical fixation that the walking dolly top surface corresponds to the rotor arm inner end has the barrel, the top of pivot is rotated the suit and is in the barrel that corresponds, the lateral wall of barrel is threaded suit respectively and is equipped with positioning screw, the inner end of positioning screw pushes up respectively tightly on the lateral wall of pivot, the bottom of end post is rotated the suit and is equipped with the chassis, rotate respectively in a plurality of rectangle recesses that the bottom surface of chassis was seted up and install the roller, and the center pin of the roller of chassis bottom is parallel to each other; the problem that the movable cantilever crane does not have anti-overturning measures in the moving and traveling process is solved.

Description

Trackless rotary overturn-preventing mechanism

Technical Field

The utility model relates to a portable cantilever crane technical field specifically is trackless rotation anti-overturning mechanism.

Background

The cantilever crane mainly utilizes the rotation and matching of the side (pitching) of the cantilever crane around a vertical axis to lift goods, has flexible use and action, meets the loading and unloading requirements, and has fixed, movable and floating forms.

The cantilever crane with the publication (announcement) number of CN204848019U comprises a trolley, wherein the main body of the trolley consists of a frame and a support frame, a driving wheel and a braking wheel are arranged at the bottom of the frame, the driving wheel is connected with a driving motor, the braking wheel is connected with a braking device, the support frame is provided with adjustable supporting legs, an upright post is arranged on the frame, a rotating track is arranged on the upper portion of the upright post, the rotating track is connected with a rotating device, the rotating device is provided with a rotating motor, the rotating device is connected with a rotating support frame, the rotating support frame is connected with a cantilever, a safety hook is arranged at the left end of the cantilever, and an electric hoist is connected to the bottom of the cantilever. The crane can move along with the movement of the trolley, can move the trolley to an ideal working position according to the working requirement, is convenient to operate and wide in working range, and overcomes the defect that the working area of the traditional fixed type upright column cantilever crane is limited; the cantilever of the crane can rotate clockwise and anticlockwise around the upright column in the circumferential direction, so that the rotation is labor-saving, the operation is convenient, and the working efficiency is high; the trolley is provided with four support frames, a pin shaft is connected between the support frames and the frame, the support frames can rotate around the pin shaft, when the trolley moves, the support frames rotate towards the inside of the trolley, the space is saved, when the trolley moves to a working position, the support frames extend out, adjustable support legs on the support frames are adjusted, the support frames are located on the same horizontal plane, and the support frames play a supporting role when the crane works. However, only when the bottom trolley moves to the working position, the support frame rotates to the working position, and the support legs are adjusted, so that the support frame plays a supporting role when the crane works; and in the process of bottom trolley transfer, the support frame is rotated and folded, and the support frame can not play a supporting role at the moment, so that the phenomenon that the crane overturns during the movement of the bottom trolley is difficult to avoid.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a trackless rotation mechanism of preventing toppling for solve among the prior art portable cantilever crane and remove the problem that the walking in-process did not possess the measure of preventing toppling.

In order to achieve the above purpose, the utility model provides a following technical scheme: the trackless rotary overturn-preventing mechanism comprises a walking trolley, a stand column with the bottom end vertically fixed at the center of the top surface of the walking trolley, a rotating device with one end rotatably connected with a cantilever on the top end of the stand column, a hoisting block fixed at the bottom of the outer end of the cantilever, and a rotating device arranged on one side of the top of the stand column and used for driving the cantilever to perform rotary motion, wherein a walking wheel is arranged on the bottom surface of the walking trolley, the rotating arm is further provided with a rotating shaft vertically fixed on the top surface of the inner end of the rotating arm, an end column is fixed on the outer end of the rotating arm along the vertical direction, three side cavities are uniformly formed in the peripheral wall of the walking trolley, the rotating shaft is rotatably arranged at one end of each side cavity, a barrel is vertically fixed on the top surface of the walking trolley corresponding to the inner end of the rotating arm, a positioning screw rod is rotatably sleeved on the corresponding barrel in the top of the rotating shaft, the side walls of the barrel are respectively provided with a thread, the inner ends of the positioning screw rods are tightly pressed against the side walls of the rotating shaft, a base column is rotatably sleeved on the bottom of the base column, a plurality of the rectangular grooves formed in the base plate, and the roller shafts are parallel to each other.

Preferably, the bottom surface of the end post is provided with a connecting shaft in the middle, the top surface of the chassis is provided with a slot in the middle, the bottom end of the connecting shaft is sleeved with a bearing, and the outer ring part of the bearing is sleeved in the slot.

Preferably, the rotating shaft is provided with an annular groove corresponding to the inner end of the positioning screw rod.

Preferably, the outer end of the positioning screw is fixedly sleeved with a turntable, and the edge of the outer side surface of the turntable is rotatably sleeved with a handle.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model relates to a roller of trackless rotatory mechanism mobile chassis bottom of preventing toppling can roll along the bottom surface to make the hoist whole advancing and the during operation homoenergetic enough obtain effectual support, thereby reach the effect of avoiding portable cantilever crane to take place the phenomenon of toppling.

Drawings

Fig. 1 is a schematic overall front view structure diagram of the present invention;

fig. 2 is a schematic view of the overall structure of the present invention;

fig. 3 is a schematic perspective view of the rotating arm of the present invention;

fig. 4 is a schematic perspective view of the chassis of the present invention;

fig. 5 is an enlarged schematic view of a portion a of fig. 1 according to the present invention.

In the figure: 1-a walking trolley; 11-road wheels; 12-side cavity; 13-a barrel body;

2-upright posts;

3-a turning gear;

4-a cantilever;

5-hoisting the hoist;

6-a rotating arm; 61-a rotating shaft; 62-end post; 63-an annular groove; 64-a connecting shaft;

7-a chassis; 71-a roll shaft; 72-slot;

8-positioning a screw rod; 81-rotating disc; 82-a handle;

9-bearing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: the trackless rotary overturn-preventing mechanism comprises a walking trolley 1, a stand column 2 with the bottom end vertically fixed at the center of the top surface of the walking trolley 1, a cantilever 4 with one end rotatably connected to the top end of the stand column 2, a hoisting block 5 fixed at the bottom of the outer end of the cantilever 4, and a turning device 3 arranged on one side of the top of the stand column 2 and used for driving the cantilever 4 to make turning motion, wherein the bottom surface of the walking trolley 1 is provided with a walking wheel 11, the trackless rotary mechanism further comprises a rotary arm 6, the top surface of the inner end of the rotary arm 6 is vertically fixed with a rotary shaft 61, the outer end of the rotary arm 6 is fixed with an end column 62 along the vertical direction, three side cavities 12 are uniformly formed in the peripheral wall of the walking trolley 1, the rotary shaft 61 is respectively and rotatably mounted at one end of each side cavity 12, a barrel 13 is vertically fixed at the position of the top surface of the walking trolley 1 corresponding to the inner end of the rotary arm 6, the top of the rotary shaft 61 is rotatably sleeved in the corresponding barrel 13, a positioning screw 8 is respectively sleeved on the side wall of the barrel, a base plate 7 is rotatably mounted in a plurality of rectangular grooves respectively, and a roller shaft 71 is mounted on the base plate of the base plate 7 in a manner.

In summary, when the crane performs a lifting operation, according to a requirement that a heavy object needs to be actually lifted by lifting the hoist 5 on the crane, the rotating arm 6 is rotated relative to the side cavity 12, so that the end post 62 has a proper radial offset, and by screwing the positioning screw 8, the inner end of the positioning screw 8 is tightly pressed and fixed against the rotating shaft 61, so that the position of the rotating arm 6 is fixed and positioned; when the crane moves and walks under the load of the walking trolley 1, the roller shaft 71 at the bottom of the chassis 7 is always supported on the ground, and the chassis 7 can flexibly rotate relative to the end post 62, so that the stability of the crane in the moving process can be ensured.

In this embodiment, the connecting shaft 64 is disposed in the center of the bottom surface of the end post 62, the slot 72 is disposed in the center of the top surface of the chassis 7, the bearing 9 is sleeved at the bottom end of the connecting shaft 64, and the outer ring of the bearing 9 is sleeved in the slot 72, so that the chassis 7 can flexibly rotate relative to the end post 62, and is convenient to adapt to the movement of the walking trolley 1.

In this embodiment, the rotating shaft 61 is provided with an annular groove 63 at a position corresponding to the inner end of the positioning screw 8, and after the positioning screw 8 is screwed, the inner end of the positioning screw 8 is tightly pressed against the annular groove 63 to fix the rotating shaft 61.

In this embodiment, the fixed cover in outer end of positioning screw 8 is equipped with carousel 81, and the edge of carousel 81 lateral surface rotates the cover and is equipped with handle 82, is convenient for rotate positioning screw 8 through carousel 81 through handle 82.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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

Claims

1. Trackless rotatory mechanism of preventing toppling, including walking dolly (1), bottom vertical fixation in stand (2), the one end at walking dolly (1) top surface center rotate connect in cantilever (4) on stand (2) top, be fixed in hoist (5) and locate of the outer end bottom of cantilever (4) and be used for the drive stand (2) top one side cantilever (4) rotary motion's slewer (3), the bottom surface of walking dolly (1) is equipped with walking wheel (11), its characterized in that: the walking trolley is characterized by further comprising a rotating arm (6), a rotating shaft (61) is vertically fixed on the top surface of the inner end of the rotating arm (6), an end column (62) is fixed on the outer end of the rotating arm (6) in the vertical direction, three side cavities (12) are uniformly formed in the outer peripheral wall of the walking trolley (1), the rotating shaft (61) is respectively and correspondingly rotatably installed at one end of each side cavity (12), a barrel (13) is vertically fixed on the top surface of the walking trolley (1) corresponding to the inner end of the rotating arm (6), the top of the rotating shaft (61) is rotatably sleeved in the corresponding barrel (13), positioning screws (8) are respectively and threadedly sleeved on the side walls of the barrel (13), the inner ends of the positioning screws (8) are respectively and tightly propped against the side walls of the rotating shaft (61), a base plate (7) is rotatably sleeved at the bottom end of the end column (62), roll shafts (71) are respectively and rotatably installed in a plurality of rectangular grooves formed in the bottom surface of the base plate (7), and center shafts (71) at the bottom of the base plate (7) are parallel to each other.

2. A trackless rotary anti-overturning mechanism according to claim 1, characterized in that: the bottom surface of the end post (62) is centrally provided with a connecting shaft (64), the top surface of the chassis (7) is centrally provided with a slot (72), the bottom end of the connecting shaft (64) is sleeved with a bearing (9), and the outer ring part of the bearing (9) is sleeved in the slot (72).

3. A trackless rotary anti-overturning mechanism according to claim 1, characterized in that: and an annular groove (63) is formed in the position, corresponding to the inner end of the positioning screw rod (8), of the rotating shaft (61).

4. The trackless rotary anti-overturning mechanism of claim 1, wherein: the outer end of the positioning screw rod (8) is fixedly sleeved with a turntable (81), and the edge of the outer side face of the turntable (81) is rotatably sleeved with a handle (82).