CN211871223U

CN211871223U - Electric trailing plate type automatic balance low-voltage direct-current small-sized cantilever crane

Info

Publication number: CN211871223U
Application number: CN202020156591.2U
Authority: CN
Inventors: 张峥峰; 俞晓烽; 季铭铭; 洪立云; 季炜烨; 张鑫燕
Original assignee: Nantong Chengyue Decoration Group Co ltd
Current assignee: Nantong Chengyue Decoration Group Co ltd
Priority date: 2020-02-09
Filing date: 2020-02-09
Publication date: 2020-11-06
Anticipated expiration: 2030-02-09

Abstract

The utility model discloses a small-size cantilever crane of electronic tow board formula automatic balance low pressure direct current, it can be according to lifting by crane weight, increases balanced moment automatically, has effectively increased the lifting capacity of equipment to safety has been ensured. The manual amplitude-changing mechanism and the lifting mechanism are respectively arranged on the upright post and the bracket, the electric carriage mechanism is arranged on a base, and the base is vertically connected with a universal wheel, a supporting leg and a microswitch. The hoisting steel wire rope is connected with the cantilever rod, passes through the slotted hole of the lifting hook hoist, is supported by the upright post roller of the cantilever and is wound with the hoisting rope pulley; after the amplitude-variable steel wire rope is connected with the upright post, the amplitude-variable steel wire rope is wound with the amplitude-variable rope pulley after passing through the cantilever rod hanging seat; the control box and the traction battery jar are fixedly arranged on the carriage. The utility model discloses novel structure, safe and reliable, the power of lifting is big, sexual valence relative altitude, is the good helper of jack-up transport.

Description

Electric trailing plate type automatic balance low-voltage direct-current small-sized cantilever crane

Technical Field

The utility model relates to a hoisting equipment especially relates to an electronic tow board formula automatic balance low pressure direct current cantilever crane.

Background

At present, the micro cantilever crane is widely applied to daily hoisting and carrying due to simple structure, convenient use, reliable performance and low price, and is particularly popular with small and medium-sized enterprises and individuals at present with the increasingly reduced population in China. However, the counterweight is fixed and cannot be adjusted, and a corresponding heavier counterweight must be configured to lift heavier objects, so that the weight of the counterweight is increased, the transportation is difficult, the occupied space of the equipment is increased, and the operation is inconvenient.

Disclosure of Invention

The utility model aims to overcome the defects and provide a miniature cantilever crane with simple, compact and reasonable structure, low price and convenient use. The utility model discloses a have counter weight regulatory function, can realize lifting by crane safely of equipment according to the weight of the object of lifting by crane automatically regulated pressure moment under the condition that does not increase the counter weight to the application range of miniature cantilever crane has been widened effectively.

In order to achieve the above object, the utility model provides a following technical scheme: an electric drag plate type automatic balancing low-voltage direct-current small cantilever crane is characterized in that the top end of a cantilever rod is connected with a first roller, the middle part of the cantilever rod is provided with a U-shaped hanging seat, the root part of the cantilever rod is hinged with an upright post, the end part of the upright post is provided with a second roller, the middle part of the upright post is provided with a bracket, the upright post is arranged on a base, a hand wheel is connected with a worm, the worm is arranged in an inner cavity of the upright post, two ends of the worm are in supporting connection with two walls of the upright post, the worm wheel is meshed with the worm, the worm wheel and a variable-amplitude rope pulley are sleeved on a wheel shaft, the wheel shaft is arranged in the inner cavity of the upright post and is in supporting connection with the two walls of the upright post; the dragging plate motor is connected with the base through a support, the base is connected with two parallel C-shaped guide rails, a horizontal rod of a T-shaped shaft is connected with two guide rail rollers and then is arranged in an inner cavity of the C-shaped guide rails, a vertical rod of the T-shaped shaft is fixedly connected with the dragging plate, a lead screw support is positioned outside the rollers and is fixedly connected with the C-shaped guide rails, the middle of a lead screw is connected with a nut, two ends of the lead screw are movably connected with a lead screw support, one end of the lead screw is connected with the dragging plate motor through a shaft, the nut is fixedly connected with the dragging plate, a traction battery is fixedly arranged on the dragging plate, the base is respectively and vertically connected with a universal wheel, an adjustable supporting pin and a switch support, the switch support is connected with a micro switch, one end of a first steel wire rope is connected with the upper; one end of the second steel wire rope is connected with the upper part of the upright post, passes through the U-shaped hanging seat in the middle of the cantilever rod, passes through the wall hole of the upright post and is wound with the amplitude-variable rope pulley through the steering shaft.

The utility model discloses a further improvement lies in: the hoisting motor and the carriage motor are both low-voltage direct current motors.

The utility model discloses a further improvement lies in: the worm wheel, the worm and the worm wheel reducer are all single-head worms, and the unfolding spiral angle of the worm is smaller than the contact friction angle of the worm wheel and the worm;

the utility model discloses a further improvement lies in: the tail part of the lifting motor is provided with a disc brake;

the utility model discloses a further improvement lies in: the upright post is a square tube;

the utility model discloses a further improvement lies in: the vertical up-down positions of the switch bracket and the adjustable supporting leg can be adjusted.

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

1. the utility model overcomes the defect that the general cantilever crane can not randomly change the balance moment, can change the balance moment in time, not only greatly improves the lifting capacity of the equipment, but also prevents overturning and ensures safety;

2. the utility model adopts the low-voltage DC motor, which not only is easy to realize soft start (flexible start) and reduce impact, but also makes full use of the advantage of heavy load start of the DC motor;

3. the utility model adopts the traction battery of the general electric vehicle as the power source, which can be used with the power source of the battery car, thereby greatly improving the utilization rate of the battery;

4. the utility model adopts the self low voltage power supply without the tow line, thereby being convenient for operation, safe and reliable, and being particularly suitable for field operation;

5. the utility model can be directly added with a solar device in the field, which can not only charge but also shade the sun;

6. the utility model discloses, all adopt universal caster, can turn to 360 on the spot.

Drawings

FIG. 1 is a schematic side view of the present invention;

FIG. 2 is a schematic front view;

reference numbers in the figures: 1-cantilever rod, 2-first roller, 3-U-shaped hanging seat, 4-upright post, 5-steering shaft, 6-worm gear, 7-worm gear shaft, 8-rope pulley, 9-worm, 10-hand wheel, 11-control box, 12-lifting motor, 13-worm gear reducer, 14-bracket, 15-traction battery jar, 16-carriage motor, 17-carriage motor bracket, 18-lead screw, 19-lead screw bracket, 20-nut, 21-carriage, 22-T-shaped shaft, 23-guide rail roller, 24-C-shaped guide rail, 25-base, 26-switch bracket, 27-microswitch, 28-universal wheel, 29-adjustable supporting leg, 30-hoist lifting hook, 31-first steel wire rope, 32-second wire rope, 33-hoisting rope wheel and 34-second roller.

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 work belong to the protection scope of the present invention.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1 and fig. 2, the present embodiment provides a technical solution: the utility model provides a small-size cantilever crane of electronic trailing plate formula automatic balance low pressure direct current mainly includes: the lifting device comprises a cantilever pair, a stand column pair, an amplitude variation mechanism, a lifting mechanism, a traction battery, a planker mechanism, a base mechanism, a lifting hook hoist and a steel wire rope, wherein the cantilever pair consists of a cantilever rod 1, a first roller 2 and a U-shaped hanging seat 3; the upright post pair consists of an upright post 4, a second roller 34 and a bracket 5; the amplitude variation mechanism consists of a steering shaft 5, a worm wheel 6, a worm wheel shaft 7, an amplitude variation rope wheel 8, a worm 9 and a hand wheel 10; the hoisting mechanism consists of a control box 11 (with carriage control), a hoisting motor 12, a hoisting speed reducer 13 and a hoisting rope wheel 33; the carriage mechanism consists of a carriage motor 16, a carriage motor bracket 17, a screw rod 18, a screw rod bracket 19, a nut 20, a carriage 21, a T-shaped shaft 22, a guide rail roller 23 and a C-shaped guide rail 24; the base mechanism consists of a base 25, a switch bracket 26, a microswitch 27, a universal wheel 28 and an adjustable supporting leg 29; the top end of a cantilever rod 1 is connected with a first roller 2, the middle part of the cantilever rod 1 is provided with a U-shaped hanging seat 3, the root part of the cantilever rod 1 is hinged with an upright post 4, the end part of the upright post 4 is provided with a second roller 34, the middle part of the upright post 4 is provided with a bracket 14, the upright post 4 is arranged on a base 25, a hand wheel 10 is connected with a worm 9, the worm 9 is arranged in the inner cavity of the upright post 4, two ends of the worm 9 are in supporting connection with two walls of the upright post 4, a worm wheel 6 is meshed with the worm 9, the worm wheel 6 and an amplitude-variable rope pulley 8 are sleeved on a wheel shaft 7, the wheel shaft 7 is arranged in the inner cavity of the upright post 4 and is in supporting connection with the two walls, a steering shaft 5 is in supporting connection with the two walls of the upright post 4 and is parallel to the; the carriage motor 16 is connected with a base 25 through a bracket 17, the base 25 is connected with two parallel C-shaped guide rails 24, a horizontal rod of a T-shaped shaft 22 is connected with two rollers 23 and then is arranged in the inner cavity of the C-shaped guide rails 24, a vertical rod of the T-shaped shaft 22 is fixedly connected with a carriage 21, a screw rod bracket 19 is positioned outside the rollers 23, and is fixedly connected with a C-shaped guide rail 24, the middle of the screw rod 18 is connected with a nut 20, two ends are movably connected with a screw rod bracket 19, one end of the first steel wire rope 31 is connected with the upper part of the cantilever rod 1 and then passes through a slotted hole at the bottom of a roller of a hoist lifting hook 30, then is wound and connected with the lifting rope wheel 33 after being supported by the first roller 2 and the second roller 34; one end of a second steel wire rope 32 is connected with the upper part of the upright post 4, passes through the U-shaped hanging seat 3 in the middle of the cantilever rod 1, passes through a wall hole of the upright post 4 and is wound and connected with the amplitude-changing rope pulley 8 through the steering shaft 5.

The hoisting motor 12 and the carriage motor 16 are both low-voltage direct current motors. Choose low pressure direct current motor for use, the advantage lies in: the load starting performance is good; flexible starting and stopping are easy to realize; the safety is high; a low-voltage direct current (battery) power supply can be directly utilized, so that the field operation is convenient; the solar energy is conveniently and directly utilized without inversion. The motors are all decelerated by adopting worm wheels and worms, the unfolding spiral angle of the worms is smaller than the contact friction angle of the worm wheels and the worms, and the motors directly utilize the self-locking function as lifting and variable amplitude braking. In order to ensure that the hoisting heavy object is braked without slipping the hook, the tail part of the hoisting motor 12 is provided with a disc brake. The upright post 4 is a square tube, so that a worm wheel and a worm in the amplitude variation mechanism can be directly arranged in the inner cavity of the amplitude variation mechanism, and the material and the space are saved. In the base mechanism, the vertical positions of the switch bracket 26 and the supporting foot 29 can be adjusted, so that the base mechanism is suitable for different ground working conditions.

When the hoisting weight exceeds the instant balance moment, the base 25 tilts forward, a microswitch 27 arranged at the rear side of the base 25 is led to act, the hoisting motor stops running (hoisting stops), the carriage motor 16 starts to drive the screw rod 18 to run, so that the carriage 21 and the traction battery 15 are driven to move backwards together, the balance moment is increased, when the carriage 21 and the traction battery 15 move to a certain position, the base 25 restores to the original horizontal position, the carriage stops, and the hoisting continues.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that 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. The utility model provides a small-size cantilever crane of electronic trailing bar formula automatic balance low pressure direct current, includes cantilever bar (1), its characterized in that: the top end of the cantilever rod (1) is connected with a first roller (2), the middle part of the cantilever rod (1) is provided with a U-shaped hanging seat (3), the root part of the cantilever rod (1) is hinged with an upright post (4), the end part of the upright post (4) is provided with a second roller (34), the middle part of the upright post (4) is provided with a bracket (14), the upright post (4) is arranged on a base (25), a hand wheel (10) is connected with a worm (9), the worm (9) is arranged in the inner cavity of the upright post (4), two ends of the worm (9) are supported with two walls of the upright post (4), a worm wheel (6) is meshed with the worm (9), the worm wheel (6) is sleeved on a worm wheel shaft (7), the worm wheel shaft (7) is arranged in the inner cavity of the upright post (4) and is supported with two walls of the upright post, a steering shaft (5) is supported with two walls of the upright post (4) and is parallel to the worm wheel (9), the control box (11) and the lifting motor (12) are arranged on the bracket (14), a motor shaft of the lifting motor (12) is connected with an input shaft of the worm gear reducer (13), and an output shaft of the worm gear reducer (13) is connected with the lifting rope wheel (33); the dragging plate motor (16) is connected with a base (25) through a support (17), the base (25) is connected with two parallel C-shaped guide rails (24), a horizontal rod of a T-shaped shaft (22) is connected with two guide rail rollers (23) and then is arranged in an inner cavity of the C-shaped guide rails (24), a vertical rod of the T-shaped shaft (22) is fixedly connected with the dragging plate (21), a lead screw support (19) is positioned on the outer side of the guide rail rollers (23) and is fixedly connected with the C-shaped guide rails (24), the middle of a lead screw (18) is connected with a nut (20), two ends of the lead screw support are movably connected with the lead screw support (19), one end of the lead screw is in shaft connection with the dragging plate motor (16), the nut (20) is fixedly connected with the dragging plate (21), a traction battery (15) is fixedly arranged on the dragging plate (21), the base (25) is respectively and vertically connected with a universal wheel (28), an adjustable supporting pin (29) and a switch support (26), and the switch support (26), one end of a first steel wire rope (31) is connected with the upper part of the cantilever rod (1), penetrates through a slotted hole at the bottom of a roller of a hoist lifting hook (30), is supported by the first roller (2) and a second roller (34), and is wound and connected with the lifting rope wheel (33); one end of a second steel wire rope (32) is connected with the upper part of the upright post (4), passes through the U-shaped hanging seat (3) in the middle of the cantilever rod (1), penetrates through a wall hole of the upright post (4), and is wound and connected with the amplitude-variable rope wheel (8) through the steering shaft (5).

2. The electric trailing plate type automatic balancing low-voltage direct-current small cantilever crane according to claim 1, is characterized in that: the lifting motor (12) and the carriage motor (16) both adopt low-voltage direct current motors.

3. The electric trailing plate type automatic balancing low-voltage direct-current small cantilever crane according to claim 1, is characterized in that: the worm wheel (6), the worm (9) and the worm gear reducer (13) are all single-head worms, and the expanding spiral angle of the worms is smaller than the contact friction angle of the worm wheel and the worms.

4. The electric trailing plate type automatic balancing low-voltage direct-current small cantilever crane according to claim 2, is characterized in that: the tail part of the lifting motor (12) is provided with a disc brake.

5. The electric trailing plate type automatic balancing low-voltage direct-current small cantilever crane according to claim 1, is characterized in that: the upright post (4) is a square tube.

6. The electric trailing plate type automatic balancing low-voltage direct-current small cantilever crane according to claim 1, is characterized in that: the vertical up-down positions of the switch bracket (26) and the adjustable supporting foot (29) can be adjusted.