Anti-falling type cantilever crane

Abstract

The utility model discloses an anti-drop cantilever crane, which relates to the technical field of cantilever cranes and comprises a stand column, a rotating arm and an electric hoist, one end of the rotating arm is rotatably mounted at the upper end of the stand column, and the electric hoist is mounted on the rotating arm through a pulley; an annular abutting table is arranged on the stand column, the upper end of the connecting arm is fixed to the bottom of the rotating arm, and the lower end of the connecting arm is fixedly connected with the horizontally-arranged mounting frame; a friction wheel in rolling contact with the side wall of the abutting table is mounted between the top plate and the bottom plate of the mounting frame, and the friction wheel is connected with a driving mechanism mounted on the mounting frame; the front end of the C-shaped frame is fixedly connected with the mounting frame; two limiting wheels in rolling contact with the side wall of the abutting table are installed between the top plate and the bottom plate on the rear side of the C-shaped frame. According to the device, the two friction wheels on the front side and the two limiting wheels on the rear side jointly clamp the abutting table, a stable anti-falling structure is formed, and the phenomenon that the rotating arm falls off when a heavy object is hoisted can be effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to cantilever crane technical field, concretely relates to a prevent type cantilever crane. BACKGROUND

[0002] Cantilever crane belongs to light work strength crane, has the ability of fast, accurate handling goods, can effectively reduce the risk of manual handling, saves the cost, improves work efficiency. In addition, cantilever crane occupies small area, saves the use space, and the rotating arm rotates widely, can cover larger handling range.

[0003] Now cantilever crane is hoisted in the process, if rotating arm front end hoists heavy object, rotating arm will be unstable, and it is easy to fall, and there is the risk of bruising. In addition, when heavy object is askew, its side pull rotating arm, and it is easy to cause rotating arm to be askew and fall off to one side.

[0004] Therefore, it is urgent to develop a prevent type cantilever crane. UTILITY MODEL CONTENT

[0005] The utility model relates to cantilever crane technical field, concretely relates to a prevent type cantilever crane.

[0006] The utility model discloses a prevent type cantilever crane, including stand, rotating arm and electric hoist, and rotating arm one end rotationally installed on the upper end of stand, and electric hoist is installed on rotating arm through the block.

[0007] The C-shaped frame is sleeved on the stand, and the front end is fixedly connected with the mounting frame, and at least two limit wheels are installed between the top plate and the bottom plate of the rear side of the C-shaped frame and are in rolling contact with the side wall of the abutment table.

[0008] Preferably, the driving mechanism includes a motor and a driving gear, the friction wheel is provided with two, and a coaxial first driven gear and a second driven gear are fixedly connected below the two, the motor is vertically installed on the top plate of the mounting frame through a fixed seat, and the output shaft penetrates the top plate of the mounting frame, the driving gear is installed on the output shaft of the motor and is meshed and connected with the first driven gear and the second driven gear.

[0009] Preferably, the limit wheel is provided with two, and the two are symmetrically arranged with the rotating arm as the center.

[0010] Preferably, the upper and lower sides of the limiting wheel are provided with wheel edges, the outer diameter of the wheel edge is greater than the diameter of the limiting wheel body, and the upper and lower wheel edges are in contact with the top and bottom of the abutting table respectively.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] The two friction wheels on the front side and the two limiting wheels on the rear side of the device jointly clamp the abutting table, forming a stable anti-falling structure, which can effectively prevent the rotating arm from falling off when lifting heavy objects; the upper and lower wheel edges of the limiting wheel can further improve the anti-falling effect of the anti-falling structure, which helps to improve the stability of the cantilever crane during operation and ensures the safety of employees. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0014] Figure 2 It is a front view of Figure 1 ;

[0015] Figure 3 It is a top view of Figure 1 .

[0016] In the drawing: 1, stand, 2, rotating arm, 3, electric hoist, 4, abutting table, 5, connecting arm, 6, mounting bracket, 7, friction wheel, 8, first driven gear, 9, driving gear, 10, motor, 11, C-shaped frame, 12, limiting wheel, 1201, wheel edge. DETAILED DESCRIPTION

[0017] The utility model is further described below in combination with the drawings and examples. Example one

[0018] Referring to Figures 1-3 , an anti-falling cantilever crane includes a stand 1, a rotating arm 2 and an electric hoist 3, the rotating arm 2 is rotatably installed at the upper end of the stand 1, and the electric hoist 3 is installed on the rotating arm 2 through a pulley block; it also includes a connecting arm 5, a mounting bracket 6 and a C-shaped frame 11, the stand 1 is provided with an annular abutting table 4, the connecting arm 5 is fixed at the bottom of the rotating arm 2, and the lower end is fixedly connected with the horizontally arranged mounting bracket 6; the mounting bracket 6 is provided with a friction wheel 7 in rolling contact with the side wall of the abutting table 4 between the top plate and the bottom plate, and the friction wheel 7 is connected with a driving mechanism installed on the mounting bracket 6.

[0019] The C-shaped frame 11 is sleeved on the stand 1, and the front end is fixedly connected with the mounting bracket 6; the C-shaped frame 11 is provided with two limiting wheels 12 in rolling contact with the side wall of the abutting table 4 between the top plate and the bottom plate on the rear side, and the two limiting wheels 12 are symmetrically arranged with the rotating arm 2 as the center.

[0020] More specifically, the upper and lower sides of the limiting wheel 12 are provided with wheel rims 1201, the outer diameter of the wheel rim 1201 is larger than the diameter of the wheel body of the limiting wheel 12, and the upper and lower wheel rims 1201 are in contact with the top and bottom of the abutting table 4, respectively.

[0021] In use, the driving mechanism drives the friction wheels 7 to rotate, thereby driving the rotating arm 2 to rotate on the stand 1; the front friction wheel 7 and the two limiting wheels 12 on the rear side jointly clamp the abutting table 4, forming a stable anti-falling structure, which can effectively avoid the phenomenon that the rotating arm 2 falls off when lifting heavy objects; in addition, the upper and lower wheel rims 1201 of the limiting wheels 12 can further improve the anti-falling effect of the anti-falling structure, which helps to improve the stability of the cantilever crane during operation and ensures the safety of employees. Embodiment Two

[0022] As a preferred embodiment of the utility model, the embodiment is designed on the basis of the embodiment one, specifically:

[0023] The driving mechanism of the embodiment comprises a motor 10 and a driving gear 9, and the friction wheels 7 are two, the lower sides of the two are fixedly connected with coaxial first driven gears 8 and second driven gears, respectively; the motor 10 is vertically installed on the top plate of the mounting frame 6 through a fixing seat, and the output shaft thereof penetrates the top plate of the mounting frame 6; the driving gear 9 is installed on the output shaft of the motor 10 and is in meshing connection with the first driven gear 8 and the second driven gear.

[0024] In work, the motor 10 starts to drive the driving gear 9, and then drives the two friction wheels 7 to rotate through the transmission of the driving gear 9 and the two driven gears.

[0025] The utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range of those skilled in the art without departing from the purpose of the utility model, and the changed content still belongs to the protection range of the utility model.

Claims

1. An anti-slip cantilever crane, comprising a column, a rotating arm and an electric hoist, wherein one end of the rotating arm is rotatably mounted on the upper end of the column, and the electric hoist is mounted on the rotating arm via a pulley, characterized in that: It also includes a connecting arm, a mounting frame and a C-shaped frame, wherein the column is provided with an annular abutment platform, the upper end of the connecting arm is fixed to the bottom of the rotating arm, and the lower end thereof is fixedly connected to the horizontally arranged mounting frame; a friction wheel is installed between the top plate and the bottom plate of the mounting frame, which is in rolling contact with the side wall of the abutment platform, and the friction wheel is connected to a driving mechanism installed on the mounting frame; The C-shaped frame is sleeved on the column, and its front end is fixedly connected to the mounting frame; at least two limiting wheels are installed between the top plate and the bottom plate on the rear side of the C-shaped frame and are in rolling contact with the side wall of the abutment platform.

2. The anti-slip cantilever crane according to claim 1, characterized in that: The driving mechanism includes a motor and a driving gear. Two friction wheels are provided, and a first driven gear and a second driven gear are fixedly connected to the bottom of the friction wheels respectively. The motor is vertically mounted on the top plate of the mounting frame through a fixing seat, and its output shaft passes through the top plate of the mounting frame. The driving gear is mounted on the motor output shaft and is meshed with the first driven gear and the second driven gear.

3. The anti-slip cantilever crane according to claim 1, characterized in that: There are two limiting wheels, which are symmetrically arranged with the rotating arm as the center.

4. The anti-slip cantilever crane according to claim 3, characterized in that: The upper and lower sides of the limiting wheel are both provided with wheel edges, the outer diameter of the wheel edge is larger than the diameter of the limiting wheel body, and the upper and lower wheel edges are in contact with the top and bottom of the abutment platform respectively.

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