CN204823897U - Pillar jib crane is decided to convenient to use small -size - Google Patents

Abstract

The utility model relates to an easy-to-use small fixed-column cantilever crane, which includes a rotating base, a lifting device, a cantilever device, and a rotating cantilever power device. , the installation platform of the cantilever device and the rotating cantilever power device; the lifting device can control the retracting and unwinding of the wire rope, and then control the lifting of the hook; the cantilever device extends the hook on the wire rope for a certain distance, and through Its own pitching makes the hook far away from or close to the rotating base within a certain range; the rotating cantilever power device can make the rotating action of the base and the pitching action of the cantilever separately through the cooperation of the motor and two clutches. The utility model is mainly used for hoisting work of objects below one ton, and is characterized by compact structure, small volume, and the cantilever can pitch and the like.

Description

A Small Fixed Column Cantilever Crane Convenient to Use

technical field

The utility model belongs to the field of cranes, in particular to a small fixed-column cantilever crane.

Background technique

Cantilever crane is a small and medium-sized lifting equipment developed in recent years. It has a unique structure, is safe and reliable, and has the characteristics of high efficiency, energy saving, time-saving, labor-saving, and flexibility. Other conventional lifting equipment shows its superiority. However, the current fixed-column jib crane has a large structure size and cannot be used in places where installation is limited, and there is no fixed-column jib crane with a cantilever that can be pitched.

Utility model content

The technical problem solved by the utility model is to provide a small fixed-column cantilever crane with compact structure, free rotation of the base and low cost, which is easy to use. For some specific places with limited installation, the small fixed-column cantilever The problem that other cantilever cranes cannot be applied at present.

In order to solve the above technical problems, the technical solution of the present utility model is: a small fixed-column cantilever crane, the key technology of which is: it includes a rotating base, a mounting plate fixed above the rotating base, and a hoist mounted on the mounting plate. device, cantilever device and rotating cantilever power unit;

The cantilever device includes a cantilever base, a cantilever, a support arm, a support arm moving part and a bevel gear set; wherein the cantilever base, the cantilever, the support arm, and the support arm moving part form a four-bar mechanism with a moving pair; the cantilever The device is provided with a small rotating shaft and two sliding shafts parallel to it. The moving part of the support arm is slidably installed on the small rotating shaft and the sliding shaft. The bevel gear set is respectively connected with the driven shaft and the The moving part of the supporting arm is connected so that the power is transmitted from the rotating cantilever power device to the moving part of the supporting arm; the cantilever makes the hook move away from or close to the rotating base within a certain range by pitching the cantilever.

As a further improvement, the rotating cantilever power device includes an electric motor, a driving shaft coupled with the output shaft of the motor, a rotating clutch arranged on the driving shaft, a driving gear sleeved on one side of the rotating clutch, a driven shaft and a control driven The shaft and the cantilever clutch whether it rotates, the driving gear meshes with the fixed gear, the cantilever clutch is installed on the mounting plate, the driven shaft is positioned on the mounting plate through the bearing, and the driven shaft is equipped with a cone One of the bevel gears and the other bevel gear of the gear set are installed on the small rotating shaft.

As a further improvement, the lifting device includes a lifting motor, a power connection part, a wire rope winding part and a wire rope hook wound on the wire rope winding part; the lifting motor and the power connection part are driven by a chain; The roll member is mounted on the power connection member. The rotating base includes a base, a rotating shaft mounted on the base through deep groove ball bearings and thrust ball bearings, and a fixed gear engaged with a rotating cantilever power device is installed on the upper part of the base.

The beneficial effects produced by adopting the above-mentioned technical scheme are:

1. The utility model has ingenious design, compact structure, small volume and low cost. By installing a thrust ball bearing and two deep groove ball bearings on the rotating shaft, the rotating base can rotate freely at 360o and can withstand sufficient axial force; through the structural design of a four-bar mechanism with a moving pair, the small The fixed-column cantilever crane can complete the pitching action of the cantilever; through the design of an electric motor and double clutch (rotating clutch and upper cantilever clutch), the power of the swing arm and the rotation is output by a motor, realizing the small fixed-column cantilever All movements of the crane are driven by electric motors. Through the compact and ingenious design, the small fixed column jib crane reduces the number of motors, saves costs and makes the structure of the small fixed column jib crane more compact.

2. For some special occasions, such as rooftops, roofs, etc., after the small fixed-column cantilever crane is finished working, the cantilever can be retracted and lowered to realize the concealment and protection of the cantilever crane. The utility model is mainly used for the lifting work of objects below one ton.

Description of drawings

Fig. 1 is the three-dimensional schematic view of small-sized fixed-column cantilever crane;

Fig. 2 is a structural representation of the utility model;

FIG. 3 is an enlarged schematic view of part A in FIG. 1 .

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Referring to accompanying drawings 1, 2 and 3, this embodiment includes a rotating base 1, a mounting plate 1-6 fixed above the rotating base 1, and a lifting device 2 and a cantilever device arranged on the mounting plate 1-6. 3 and rotating cantilever power unit 4 .

The rotating base 1 can rotate freely at 360°, and the suspended object is controlled within a circular space centered on the center of the base 1-1, and the distance from the hook to the center of the base 1-1 is a radius; the base 1-1 is fixed after installation does not move, the rotating shaft 1-3 is connected to the base through a thrust ball bearing 1-2 and two deep groove ball bearings 1-4 and can freely rotate around the center of the base; the mounting plate 1-6 is welded to the rotating shaft 1-3, Provide installation positions for the lifting device 2, the cantilever device 3, and the rotating cantilever power device 4; the fixed gear 1-5 is welded to the base 1-1 and meshed with the driving gear 4-3 in the rotating cantilever power device 4, for the rotation Base 1 provides rotational power.

The cantilever device 3 includes a cantilever base 3-1, a cantilever 3-2, a support arm 3-3, a support arm moving part 3-4 and a bevel gear set 3-5, and a small rotating shaft 3-5 is provided on the cantilever base 3-1. 6 and the sliding shaft 3-7 on both sides thereof, the small rotating shaft 3-6 and the sliding shaft are positioned with a support arm moving part 3-4, and the supporting arm 3-3 is located between the supporting arm moving part 3-4 and Between the cantilever 3-2, the supporting arm moving part 3-4 is equivalent to a slider, and the small rotating shaft 3-6 is rotated to drive the matching supporting arm moving part 3-4 to move. The small rotating shaft 3 Between -6 and the moving part 3-4 of the support arm, a transmission structure such as a screw pair or a threaded pair can be used, as long as it meets the requirements of use. Wherein the cantilever base 3-1, the cantilever 3-2, the support arm 3-3, and the support arm moving part 3-4 form a four-bar mechanism with a moving pair, and the supporting arm moving part 3-4 can be rotated on the small rotating shaft 3-4. 6 and slide on the slide shaft 3-7 that is arranged in parallel with it. One of the bevel gears of the bevel gear set 3-5 is installed on the driven shaft 4-2, and the other is installed on the small rotating shaft 3-6. The bevel gear set 3-5 passes through the driven shaft 4-2 and the support arm respectively. The moving part 3-4 is connected so that the power is transmitted from the rotating cantilever power device 4 to the supporting arm moving part 3-4 on the mobile pair; the cantilever 3-2 makes the hook 2-4 away from or within a certain range by pitching. Close to the swivel base 1.

The rotating cantilever power device 4 includes a motor 4-6, a driving shaft 4-5 coupled with the output shaft of the motor 4-6, a rotating clutch 4-4 arranged on the driving shaft 4-5, and a rotating clutch 4-4 sleeved on the rotating clutch 4-5. The driving gear 4-3 on one side, the driven shaft 4-2 and the cantilever clutch 4-1 that controls whether the driven shaft 4-2 rotates or not, the driving gear 4-3 meshes with the fixed gear 1-5, The cantilever clutch 4-1 is installed on the mounting plate 1-6, and the driven shaft 4-2 is positioned on the mounting plate 1-6 via a bearing. When the cantilever clutch is engaged and the rotating clutch is disengaged, the motor 4-6 transmits the power to the bevel gear set 3-5 through the driving shaft 4-5 and the driven shaft 4-2, at this time the cantilever 3-2 pitches or tilts; when the cantilever When the clutch is separated and the rotating clutch is combined, the motor 4-6 transmits the power to the driving gear 4-3 through the driving shaft 4-5, and now the rotating base 1 rotates clockwise or counterclockwise. The design of the double clutch makes the power of the swing arm and the rotation output by one motor, which reduces the amount of the motor, saves cost and makes the structure of the small fixed-column jib crane more compact.

The lifting device 2 includes a lifting motor 2-1, a power connection part 2-2, a wire rope winding part 2-3 and a wire rope hook 2-4. The hoisting motor 2-1 and the power connection part 2-2 are chain drives; the wire rope winding part 2-3 is installed on the power connection part 2-2 to control the lifting of the wire rope hook 2-4.

Parts not described in detail in the utility model belong to the common knowledge of those skilled in the art. The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (3)

1. a small-sized fixed pillar type cantilever crane easy to use, is characterized in that: it comprises rotating base (1), the adapter plate (1-6) that is fixed on rotating base (1) top and the hoisting device (2), cantilever arrangement (3) and the hinged cantilever engine installation (4) that are arranged on adapter plate (1-6);

Described cantilever arrangement (3) comprises cantilever base (3-1), the cantilever (3-2) be installed on cantilever base (3-1), hold-down arm (3-3), hold-down arm movable parts (3-4) and bevel gear set (3-5); Wherein said cantilever base (3-1), cantilever (3-2), hold-down arm (3-3), hold-down arm movable parts (3-4) form the four-bar mechanism with a moving sets; Described cantilever arrangement (3) is provided with little rotating shaft (3-6) and two parallel with it slide shafts (3-7), described hold-down arm movable parts is slidably mounted on little rotating shaft (3-6) and slide shaft (3-7), described bevel gear set (3-5), by being connected with the driven shaft (4-2) on hinged cantilever engine installation (4) and hold-down arm movable parts (3-4) respectively, makes power be passed on hold-down arm movable parts (3-4) by hinged cantilever engine installation (4); Described cantilever (3-2) by pitching make suspension hook within the specific limits away from or near rotating base (1).

2. small-sized fixed pillar type cantilever crane easy to use according to claim 1, it is characterized in that: described hinged cantilever engine installation (4) comprises electrical motor (4-6), the imput shaft (4-5) connected with electrical motor (4-6) output shaft, be located at the rotary clutch (4-4) in imput shaft (4-5), be sheathed on driving gear (4-3) on rotary clutch (4-4) side and driven shaft (4-2) and control the cantilever power-transfer clutch (4-1) whether driven shaft (4-2) rotate, described driving gear (4-3) engages with fixed gear wheel (1-5), described cantilever power-transfer clutch (4-1) is installed on adapter plate (1-6), described driven shaft (4-2) is positioned on adapter plate (1-6) through bearing, described driven shaft (4-2) is provided with one of them finishing bevel gear cuter of bevel gear set (3-5), another finishing bevel gear cuter is installed on described little rotating shaft (3-6).

3. small-sized fixed pillar type cantilever crane easy to use according to claim 1, it is characterized in that: described rotating base (1) comprises base (1-1), the rotating shaft (1-3) be installed on by deep groove ball bearing (1-4) and thrust ball bearing (1-2) on base (1-1), and described base (1-1) top is provided with the fixed gear wheel (1-5) engaged with hinged cantilever engine installation (4).