CN213011694U - Crank arm crane - Google Patents

Abstract

The utility model relates to a crank arm crane, wherein a fixing ring is arranged on the side surface of an upper upright post, and one end of a locking device is connected with the fixing ring through a connecting rod; the other end of the locking device is connected with a fixed rod, and a hook is arranged on the fixed rod; the front swing arm is connected with the rear swing arm through a second rotating device; a hanging head is arranged at the top end of the front swing arm, and an electric hoist is arranged below the hanging head; the side of the hanging head is provided with a fixed protrusion, and the fixed protrusion is provided with a hook hole. The top of electric block is provided with overload induction hanging shaft, and the left side is provided with the display screen, and the display screen is connected with the controller, controller linked switch, display screen and alarm. The crank arm crane of the utility model can prevent overload hoisting by simple and exquisite design; and when the first rotating device rotates, the problem that the second rotating device rotates due to the fact that the electric hoist lifts the goods to be taken due to inertia is solved, the article lifting efficiency is improved, and the production safety is improved.

Description

Crank arm crane

Technical Field

The utility model relates to a hoist field especially relates to a crank arm crane.

Background

The crank arm crane is one of light rotary arm cranes, is arranged on engineering vehicles, rescue vehicles, transportation vehicles and the like, and is provided with two slewing devices, wherein one slewing device on the upright post can drive the whole rotary arm to rotate; the other is a rotating device on the rotating arm, which can drive the relative rotation between the front rotating arm and the rear rotating arm. The crank arm crane controls the electric hoist to avoid objects by utilizing the bending and rotating motion of the rotating arm, and the electric hoist is used for hoisting the objects to a preset position, so that the working area is maximized.

The prior crank arm crane has the following defects:

1. traditional crank arm hoist need rotate the slewer on the stand when article are transferred around the great scope of stand to needs, and in this moment, slewer on the fixed spiral arm, nevertheless because the inertia of hanging the heavy object on the electric block at the removal in-process often can drive the slewer rotation on the spiral arm, seriously influences article handling safety to and influence handling efficiency.

2. At present, a certain part of crank arm cranes do not have hoisting limiting devices, the hoisting limiting devices are measured according to the bearing limit of equipment, the hoisting weight is not limited within a safety range, and if a hoisting object exceeds the maximum limit of the crane, the equipment is easily damaged, the safety of personnel is not facilitated, and even safety accidents are caused.

Therefore, there is a need for a crane with a curved boom that can prevent overload and effectively prevent the rotation of the swing device on the boom during the hoisting process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the aforesaid not enough, provide one kind and can prevent overloading, can effectively prevent a slewer pivoted crank arm crane on handling process spiral arm again.

The purpose of the utility model is realized like this:

a crank arm crane comprises a lower upright post, an upper upright post, a rear swing arm, a front swing arm, an electric hoist and a locking device; the upper upright post is arranged on the lower upright post through a first rotating device, the upper upright post rotates relative to the lower upright post, and the rear rotating arm is fixed with the upper upright post; a fixing ring is arranged on the side surface of the upper upright post, and one end of the locking device is connected with the fixing ring through a connecting rod; the other end of the locking device is connected with a fixed rod, and a hook is arranged on the fixed rod; a hook ring is arranged below the fixing ring; the front swing arm is connected with the rear swing arm through a second rotating device, and the front swing arm and the rear swing arm rotate relatively; the top end of the front swing arm is provided with a hanging head, an electric hoist is arranged below the hanging head, the electric hoist is connected with a cable, and the lower end of the cable is connected with a remote controller; the side of the hanging head is provided with a fixing protrusion, and the fixing protrusion is provided with a hook hole.

An overload induction hanging shaft is arranged at the hanging position at the top of the electric hoist, and a display is arranged on the left side of the electric hoist; the overload induction hanging shaft is connected with a controller, and the controller is connected with a display, an alarm and a switch.

A support frame is fixedly arranged below the rear swing arm and the upper upright post; and a handrail is fixed below the rear swing arm.

The first and second rotating devices are driven by a motor.

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

1. the utility model relates to a crank arm crane, which is provided with a locking device, wherein the locking device is connected with a fixing ring through a fixing rod and can freely move relative to the fixing ring; when the locking function is not needed, one end of the locking device hooks the hook ring through the hook, and the locking device is fixed on the side surface of the upper upright post; the utility model relates to a crank arm crane, which is provided with a hanging head, a fixed protrusion and a hook hole, when a front rotating arm needs to be fixed to prevent a second rotating device from rotating, one end of a locking device hooks the hook hole through a hook; the utility model relates to a crank arm crane has avoided when first slewer rotates through simple and exquisite design, because electric block hangs the inertial reason of the goods of getting, leads to second slewer pivoted problem, has not only improved article handling efficiency, has improved the production security moreover.

2. The utility model relates to a crank arm crane has set up overload induction peg in electric block department of hanging, has good rated load lifting capacity at the factory default, as long as exceed rated load lifting capacity, electric block will power-off protection, and electric block can only descend, can not rise, and overload display screen shows the load lifting capacity load value of reality simultaneously to the scintillation is reported to the police, prevents that equipment from damaging because of surpassing its bearing capacity, has avoided the emergence of overload accident.

Drawings

Fig. 1 is a schematic structural view of the crank arm crane of the present invention.

Fig. 2 is a top view of the crank arm crane of the present invention.

Fig. 3 is the utility model discloses a display screen's in crank arm crane schematic diagram.

Fig. 4 is a schematic view of an overload induction hanging shaft in a crank crane of the present invention.

Fig. 5 is a schematic view of connection of the overload induction hanging shaft, the display, the controller, the alarm and the switch in the crank arm crane of the present invention.

Wherein: the device comprises a lower upright post 1, a first rotating device 2, a hook ring 3, an upper upright post 4, a locking device 5, a fixing ring 6, a support frame 7, a rear rotating arm 8, a handrail 9, a second rotating device 10, a front rotating arm 11, a hanging head 12, an electric hoist 13, a cable 14, a remote controller 15, a connecting rod 16, a fixing rod 17, a hook 18, a hook hole 19, a fixing protrusion 20, a display 21, an overload induction hanging shaft 22, a controller 23, an alarm 24 and a switch 25.

Detailed Description

Referring to fig. 1 to 5, the crank arm crane according to the present invention includes a lower column 1, an upper column 4, a rear swing arm 8, a front swing arm 11, an electric block 13, and a locking device 5; the lower end of the lower upright post 1 is fixed on an engineering vehicle and a rescue and transport vehicle through foundation bolts; the upper upright post 4 is arranged on the lower upright post 1 through the first rotating device 2, the upper upright post 4 rotates relative to the lower upright post 1, and the rear swing arm 8 is fixed with the upper upright post 4; the side surface of the upper upright post 4 is provided with a fixing ring 6, one end of a locking device 5 is connected with the fixing ring 6 through a connecting rod 16, and the locking device 5 can rotate relative to the fixing ring 6; the other end of the locking device 5 is connected with a fixed rod 17, and a hook 18 is arranged on the fixed rod 17; a hook ring 3 is arranged below the fixing ring 6, and when the locking device 5 is not used, the hook ring 3 is hooked by the hook 18; the front swing arm 11 is connected with the rear swing arm 8 through a second rotating device 10, and the front swing arm 11 and the rear swing arm 8 rotate relatively; a hanging head 12 is arranged at the top end of the front swing arm 11, an electric hoist 13 is arranged below the hanging head 12, the electric hoist 13 is connected with a cable 14, the lower end of the cable 14 is connected with a remote controller 15, and the remote controller 15 can be used for controlling the lower part or the upper part of a lifting hook on the electric hoist 13; the side of the hanging head 12 is provided with a fixing protrusion 20, the fixing protrusion 20 is provided with a hook hole 19, and when the front swing arm 11 needs to be fixed to prevent the second swing device 10 from rotating, the hook 18 hooks the hook hole 19.

An overload induction hanging shaft 22 is arranged at the hanging position of the top of the electric hoist 13, the overload induction hanging shaft 22 can sense the weight of the electric hoist 13 in real time, a display 21 is arranged on the left side of the electric hoist 13, and the display 21 can display the weight monitored by the overload induction hanging shaft 22 in real time; the overload induction hanging shaft 22 is connected with the controller 23, the controller 23 is connected with the display 21, the alarm 24 and the switch 25, when the overload induction hanging shaft 22 induces that the weight of the electric hoist 13 on the electric hoist exceeds the preset rated hoisting weight, the controller 23 transmits the overload weight to the display 21, signals to the alarm 24 flicker, and simultaneously, the switch 25 of the electric hoist 13 is turned off, and the electric hoist 13 can only descend to put down the overload goods.

A support frame 7 is fixedly arranged below the rear swing arm 9 and the upper upright post 4, and plays a role in reinforcing the connection between the rear swing arm 8 and the upper upright post 4; and a handrail 9 is fixed below the rear swing arm 8 and can be manually operated by an operator.

The first and second turning devices 2, 10 are driven by a motor.

In addition: it should be noted that the above-mentioned embodiment is only a preferred embodiment of the present patent, and any modification or improvement made by those skilled in the art based on the above-mentioned conception is within the protection scope of the present patent.

Claims (4)

1. A crank arm crane is characterized in that: comprises a lower upright post (1), an upper upright post (4), a rear swing arm (8), a front swing arm (11), an electric hoist (13) and a locking device (5); the upper upright post (4) is mounted on the lower upright post (1) through the first rotating device (2), the upper upright post (4) rotates relative to the lower upright post (1), and the rear rotating arm (8) is fixed with the upper upright post (4); a fixing ring (6) is arranged on the side surface of the upper upright post (4), and one end of the locking device (5) is connected with the fixing ring (6) through a connecting rod (16); the other end of the locking device (5) is connected with a fixed rod (17), and a hook (18) is arranged on the fixed rod (17); a hook ring (3) is arranged below the fixing ring (6); the front rotating arm (11) is connected with the rear rotating arm (8) through a second rotating device (10), and the front rotating arm (11) and the rear rotating arm (8) rotate relatively; a hanging head (12) is arranged at the top end of the front swing arm (11), an electric hoist (13) is arranged below the hanging head (12), the electric hoist (13) is connected with a cable (14), and the lower end of the cable (14) is connected with a remote controller (15); the side surface of the hanging head (12) is provided with a fixed protrusion (20), and the fixed protrusion (20) is provided with a hook hole (19).

2. A crank arm crane according to claim 1, characterized in that: an overload induction hanging shaft (22) is arranged at the hanging position of the top of the electric hoist (13), and a display (21) is arranged on the left side of the electric hoist (13); the overload induction hanging shaft (22) is connected with a controller (23), and the controller (23) is connected with a display (21), an alarm (24) and a switch (25).

3. A crank arm crane according to claim 1, characterized in that: a support frame (7) is fixedly arranged below the rear swing arm (8) and the upper upright post (4); a handrail (9) is fixed below the rear swing arm (8).

4. A crank arm crane according to claim 1, characterized in that: the first and second rotating devices (2, 10) are driven by a motor.

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