CN111943052A

CN111943052A - Balanced cantilever crane of small-size intelligence is put

Info

Publication number: CN111943052A
Application number: CN202010903385.8A
Authority: CN
Inventors: 尚晓峰; 李小凡; 尚进; 张鹏; 刘大力
Original assignee: Jilin Zhongkeboneng Technology Co ltd
Current assignee: Jilin Zhongkeboneng Technology Co ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2020-11-17

Abstract

The utility model provides a balanced cantilever crane of small-size intelligence puts belongs to cantilever crane technical field, and the workman that aim at solved prior art existence transports extravagant human cost, work efficiency is low and current cantilever crane puts the focus and all deviates from the stand, can appear empting the risk scheduling problem during the application. The invention comprises the following steps: a support device; the cantilever is connected to the upper end of the supporting device through a rotating mechanism, a rod part of the cantilever is hinged with the rotating mechanism, and the rotating mechanism drives the cantilever to rotate around a vertical shaft; and the conveying adjusting device is arranged on the cantilever and at least comprises an electric hoist and a force balancing mechanism, the electric hoist is in sliding fit with the cantilever, the gravity center of the cantilever is adjusted through the force balancing mechanism, and the gravity center is always positioned on the supporting device. The invention has small size, is convenient to disassemble, and can be installed on other equipment for matching use; the device is provided with an intelligent balance mechanism, so that the gravity center can be stabilized on the upright post without dumping risk; the intelligent degree is high, practices thrift the human cost.

Description

Balanced cantilever crane of small-size intelligence is put

Technical Field

The invention belongs to the technical field of cantilever cranes, and particularly relates to a small intelligent balance cantilever crane device suitable for a heat treatment workshop.

Background

The cantilever crane device is light hoisting equipment used for adapting to modern production, is suitable for hoisting operation with short distance, frequent use and high density, and has the characteristics of high efficiency, energy conservation, small occupied area, easy operation and maintenance and the like. And can be widely applied to production or maintenance occasions in the industries of machine manufacturing, railways, chemical engineering, light industry and the like. However, the existing cantilever crane device is mainly applied to the transportation operation of wider indoor or outdoor occasions, and can not realize the operation in narrow closed spaces such as a vacuum heat treatment furnace and the like; and the degree of intellectualization is low, and human intervention is needed.

The manufacturing of the thin-wall titanium alloy welding piece needs to be carried out in a vacuum heat treatment furnace, the welding process can cause the thin-wall piece to generate thermal deformation, in order to recover the deformation, a conveying device is used for conveying a steel block with certain mass to a deformation position, and the shape is slowly recovered through heating. At present, due to space limitation, the conveying of the steel blocks is always completed by workers, so that the labor cost is greatly wasted, and the working efficiency is lower; the gravity center of the existing cantilever crane deviates from the upright column, and the dumping risk can occur during application; the existing cantilever crane device cannot be conveniently disassembled and is fixed on other devices for matching use.

Disclosure of Invention

The invention aims to provide a small intelligent balance cantilever lifting device, which solves the problems that in the prior art, labor cost is wasted in worker conveying, the working efficiency is low, the gravity center of the existing cantilever lifting device deviates from an upright column, the dumping risk occurs in application and the like.

In order to achieve the purpose, the small intelligent balance cantilever crane device comprises:

a support device;

the cantilever is connected to the upper end of the supporting device through a rotating mechanism, the rod part of the cantilever is hinged to the rotating mechanism, and the rotating mechanism drives the cantilever to rotate around a vertical shaft;

and the conveying adjusting device is arranged on the cantilever and at least comprises an electric hoist and a force balancing mechanism, the electric hoist is in sliding fit with the cantilever, the gravity center of the cantilever is adjusted through the force balancing mechanism, and the gravity center is always positioned on the supporting device.

The electric hoist and the cantilever are in sliding fit, and specifically the following steps are carried out: electric block pass through slide mechanism with cantilever sliding fit, slide mechanism includes:

two belt wheels which are in running fit with the cantilever, wherein one belt wheel is close to the joint of the cantilever and the rotating mechanism, and the other belt wheel is close to one end part of the cantilever;

a synchronous belt connected between the two belt wheels;

the synchronous motor is coaxially and fixedly connected with the rotating shaft of any one belt wheel;

the sliding block is fixed on the synchronous belt;

and a slider guide fixed to the suspension, the slider and the slider guide being in sliding engagement.

The synchronous motor is coaxially and fixedly connected with a rotating shaft of the belt wheel close to the joint of the cantilever and the rotating mechanism.

The force balancing mechanism includes:

the lead screw is fixed on the cantilever and arranged in parallel with the cantilever;

the lead screw nut guide rail is arranged in parallel with the lead screw and is fixed on the cantilever;

the lead screw nut heavy object platform and the lead screw form a lead screw nut pair which is in sliding fit with the lead screw nut guide rail;

and the screw motor is coaxially and fixedly connected with one end of the screw.

The lead screw motor is positioned close to one end where the cantilever and the rotating mechanism are connected.

The rotating mechanism includes:

a worm gear reducer fixed at the upper end of the supporting device;

the worm motor is coaxially and fixedly connected with the worm of the worm gear reducer;

one end of the transmission shaft is coaxially and fixedly connected with a worm wheel of the worm gear reducer;

and the hinge is fixed on the rod part of the cantilever, and the other end of the transmission shaft is in running fit with the hinge.

The rotating mechanism further comprises a hollow pipe, the hollow pipe is arranged on the outer sides of the hinge and the transmission shaft, and the transmission shaft is in rotating fit with a shaft shoulder in the hollow pipe through a transmission shaft bearing.

The worm gear reducer includes:

the box body is fixed at the upper end of the supporting device;

the worm wheel is arranged in the box body and is in running fit with the box body through a worm wheel bearing;

and the worm is matched with the worm wheel and is in running fit with the box body through a worm bearing.

The rotating mechanism further comprises a fixing sleeve, and the fixing sleeve is fixed on a shaft shoulder on the upper end face of the box body and sleeved outside the hollow pipe.

The support device includes:

a base;

and one end of the upright post is detachably connected with the base, and the rotating mechanism is arranged at the other end of the upright post.

The invention has the beneficial effects that:

the base and the upright post part of the invention are convenient to disassemble, and the upright post part can be disassembled from the base and installed on other devices for matching use.

The structure of the lead screw carrying the heavy object can balance the force, and the lead screw is driven to rotate by controlling the motor and the balance object block is driven to move, so that the intelligent balance effect of the device is achieved.

The synchronous belt mechanism drives the electric hoist to move along the slide block guide rail, the synchronous belt is controlled by the motor to move, and the device achieves the effect of intelligently conveying objects by matching with the lead screw mass balancing device.

The intelligent balance cantilever crane device is provided with the intelligent balance mechanism, so that the force balance is carried out in real time, the gravity center of the device is concentrated on the upright post, and the risk of toppling over the device is avoided.

The intelligent balance cantilever crane device is miniaturized, can be applied to narrow closed space, has lower manufacturing cost and saves cost.

Drawings

FIG. 1 is a schematic view of the overall structure of a small intelligent balanced cantilever crane device of the present invention;

FIG. 2 is an exploded view of the structure of the cantilever part of the small intelligent balanced cantilever crane of the present invention;

FIG. 3 is an exploded view of a rotating mechanism in the small intelligent balanced cantilever crane of the present invention;

wherein: 1. the device comprises a supporting device, 101, a base, 102, a stand column, 2, a cantilever, 3, a rotating mechanism, 301, a worm gear reducer, 302, a box body, 303, a worm gear, 304, a worm, 305, a worm gear bearing, 306, a worm bearing, 307, a worm through cover, 308, a worm motor, 309, a transmission shaft, 310, a hinge, 311, a hollow pipe, 312, a transmission shaft bearing, 313, a transmission shaft through cover, 314, a fixed sleeve, 4, a conveying adjusting device, 401, an electric block, 402, a belt pulley, 403, a synchronous belt, 404, a synchronous motor, 405, a sliding block, 406, a sliding block guide rail, 407, a lead screw, 408, a lead screw nut guide rail, 409, a lead screw nut weight table, 410 and a lead screw motor.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings.

Referring to the attached figure 1, the small intelligent balance cantilever 2 lifting device comprises:

a support device 1;

the cantilever 2 is connected to the upper end of the supporting device 1 through a rotating mechanism 3, the rod part of the cantilever 2 is hinged to the rotating mechanism 3, and the rotating mechanism 3 drives the cantilever 2 to rotate around a vertical shaft;

and set up and be in transport adjusting device 4 on cantilever 2, it includes an electric block 401 and power balance mechanism at least to transport adjusting device 4, electric block 401 with 2 sliding fit of cantilever, through the 2 centrobaries of power balance mechanism adjustment cantilever, make the focus be located strutting arrangement 1 all the time.

Referring to fig. 2, the sliding fit between the electric hoist 401 and the cantilever 2 is specifically as follows: electric block 401 through slide mechanism with cantilever 2 sliding fit, slide mechanism includes:

two belt wheels 402 which are rotationally matched with the cantilever 2, wherein one belt wheel 402 is close to the joint of the cantilever 2 and the rotating mechanism 3, and the other belt wheel 402 is close to one end part of the cantilever 2;

a timing belt 403 connected between the two pulleys 402;

a synchronous motor 404 coaxially and fixedly connected with the rotating shaft of any one of the pulleys 402;

a slide block 405 fixed to the timing belt 403;

and a slider rail 406 fixed to the suspension 2, the slider 405 and the slider rail 406 being slidably engaged.

The synchronous motor 404 is coaxially and fixedly connected with a rotating shaft of the belt wheel 402 close to the joint of the cantilever 2 and the rotating mechanism 3.

The force balancing mechanism includes:

a lead screw 407 fixed to the arm 2 and arranged in parallel with the arm 2;

a lead screw nut guide rail 408 which is arranged in parallel with the lead screw 407 and fixed on the cantilever 2;

a lead screw nut weight platform 409, wherein the lead screw nut weight platform 409 and the lead screw 407 form a lead screw nut pair and are in sliding fit with the lead screw nut guide rail 408;

and the lead screw motor 410 is coaxially and fixedly connected with one end of the lead screw 407.

The lead screw motor 410 is located near the end where the boom 2 and the turning mechanism 3 are connected.

Referring to fig. 3, the rotating mechanism 3 includes:

a worm gear reducer 301 fixed on the upper end of the supporting device 1;

a worm motor 308 coaxially and fixedly connected with the worm 304 of the worm gear reducer 301;

one end of the transmission shaft 309 is coaxially and fixedly connected with the worm gear 303 of the worm gear reducer 301;

and a hinge 310 fixed to a rod portion of the cantilever 2, and the other end of the driving shaft 309 is rotatably engaged with the hinge 310.

The rotating mechanism 3 further comprises a hollow tube 311, the hollow tube 311 is arranged on the outer sides of the hinge 310 and the transmission shaft 309 and on the inner side of the fixed sleeve 314, the fixed sleeve 314 is fixed above the box body 302, a transmission shaft through cover 313 below the fixed sleeve is fixed on a shaft shoulder of the transmission shaft 309, an inner ring of a transmission shaft bearing 312 is in interference fit with the transmission shaft 309, an outer ring of the transmission shaft bearing 312 is in interference fit with an inner ring of the hollow tube 311, and the transmission shaft 309 is in rotational fit with the inner shaft shoulder of the hollow tube 311 through the transmission shaft bearing 312 and the transmission. The transmission shaft 309 rotates to drive the inner rings of the transmission shaft bearings 312 to rotate, the lower ends of the upper transmission shaft transparent covers 313 and the lower transmission shaft transparent covers 313 respectively abut against the end faces of the outer rings of the two transmission shaft bearings 312, the outer rings of the transmission shaft transparent covers 313 and the inner rings of the hollow pipes 311 are in interference fit, the transmission shaft 309 and the cantilever 2 are connected through the hinge 310, the hinge 310 is installed in a groove above the transmission shaft 309 and penetrates through holes on two sides of the groove and holes of the hinge 310 through a round rod, the hinge 310 only generates one-direction rotational freedom, and the base of the hinge 310 is connected with the lower surface of the cantilever 2 through a.

The worm gear reducer 301 includes:

a box body 302 fixed at the upper end of the supporting device 1;

a worm gear 303 disposed inside the case 302, the worm gear 303 being rotatably engaged with the case 302 through a worm bearing 305;

and a worm 304 engaged with the worm wheel 303, the worm 304 being rotatably engaged with the case 302 through a worm bearing 306. A worm through cover 307 is arranged outside the worm bearing 306.

The worm gear reducer 301 is fixed between the box 302 and the hollow pipe 311 through a fixing sleeve 314 with threads. The fixing sleeve 314 is fixed on a shaft shoulder on the upper end surface of the box body 302 and is sleeved outside the hollow pipe 311.

The support device 1 comprises:

a base 101;

and a column 102 with one end detachably connected with the base 101, wherein the rotating mechanism 3 is arranged at the other end of the column 102.

In the embodiment, the upright column 102 is fixed on the base 101 through an angle bracket, the lower surface of the box 302 of the worm gear reducer 301 is fixed with the upper surface of the upright column 102 through a screw, the upper surface of the box 302 of the worm gear reducer 301 is connected with a fixing sleeve 314 with a threaded hole through a screw, and the hollow pipe 311 is arranged inside the fixing sleeve 314 to prevent the fixing sleeve 314 from tilting. The worm motor 308 drives the worm 304 to rotate, the worm 304 drives the worm wheel 303 to rotate, the rotating direction is changed, the transmission shaft 309 in the hollow tube 311 receives the torque transmitted by the worm wheel 303 and starts to rotate to drive the hinge 310 above the transmission shaft 309 to rotate, the hinge 310 is assembled at the upper end of the transmission shaft 309 and penetrates through the upper part of the transmission shaft 309 and a hole in the hinge 310 to fix the transmission shaft 309 and the hinge 310 through a round rod, the base 101 of the hinge 310 is fixedly connected with the cantilever 2 through a screw, and the rotation of the hinge 310 drives the cantilever 2 to rotate, so that the purpose of rotating the cantilever 2 in a hanging.

In this embodiment, a ball screw mechanism is installed at one end of the cantilever 2, the lead screw nut guide rail 408 is tightly attached to the upper surface of the cantilever 2, the lead screw 407 is controlled to rotate by the lead screw motor 410, the lead screw nut weight platform 409 is driven to move, a balance block is placed on the lead screw nut weight platform 409, and the purpose of intelligent balance of the device is achieved by controlling the lead screw motor 410.

In this embodiment, the other end of the cantilever 2 hangs and installs synchronous belt 403 and guide rail slider mechanism to drive electric block 401 to move, synchronous belt 403 moves and depends on the rotation of pulley 402, a pulley 402 is fixed in the rotating shaft in the square groove inside the cantilever 2, and drive it to rotate through synchronous motor 404, another pulley 402 is fixed in the rotating shaft at the end of cantilever 2, the part of synchronous belt 403 located at the lower end of cantilever 2 is fixed with slider 405, slider guide 406 is closely attached to the lower surface of cantilever 2, synchronous belt 403 drives slider 405 to slide on slider guide 406, thereby drive electric block 401 fixed together with slider 405 to move, and the purpose of intelligent transportation of the device is achieved.

The method for conveying the steel blocks by adopting the small intelligent balance cantilever 2 hoisting device comprises the following steps: the conveying distance and angle are set before the conveying object block, a balancing object block is placed on the lead screw nut weight platform 409 and is positioned at the position of zero displacement, the steel block is slowly hoisted by the electric hoist 401, the change of the force during hoisting is sensed by the gravity sensor, the Nano single chip microcomputer reads and calculates the distance which corresponds to the balancing device and needs to move, the number of rotation turns needed by the lead screw motor 410 is calculated, an instruction is sent to enable the lead screw motor 410 to move, when the steel block is completely hoisted, a rotation instruction is executed, the steel block is rotated by a certain angle to be aligned with the position in the vacuum heat treatment furnace, the single chip microcomputer sends an instruction to control the synchronous motor 404 to operate, the steel block is sent to the upper part of the corresponding position in the vacuum heat treatment furnace, during the period, the single chip microcomputer continuously reads the displacement indication number of the sliding block 405 of the displacement sensor on the cantilever 2 and the displacement indication number of, and (3) automatic balancing, namely, when the steel block reaches the position, executing a lowering command to slowly lower the object block, reading the change of force on the gravity sensor by the Nano single chip microcomputer, when the force is gradually reduced, calculating the displacement required to be returned by the balancing device and executing the displacement by the lead screw motor 410, and when the steel block completely falls, executing a zeroing command, returning to the initial position and repeating the operation.

Claims

1. The utility model provides a balanced cantilever crane of small-size intelligence device which characterized in that includes:

a support device (1);

the cantilever (2) is connected to the upper end of the supporting device (1) through a rotating mechanism (3), the rod part of the cantilever (2) is hinged to the rotating mechanism (3), and the rotating mechanism (3) drives the cantilever (2) to rotate around a vertical shaft;

and the conveying adjusting device (4) is arranged on the cantilever (2), the conveying adjusting device (4) at least comprises an electric hoist (401) and a force balancing mechanism, the electric hoist (401) is in sliding fit with the cantilever (2), and the gravity center of the cantilever (2) is adjusted through the force balancing mechanism so as to be always positioned on the supporting device (1).

2. The small intelligent balanced cantilever crane device according to claim 1, wherein the sliding fit between the electric hoist (401) and the cantilever (2) is specifically: the electric hoist (401) is in sliding fit with the cantilever (2) through a sliding mechanism, and the sliding mechanism comprises:

two belt wheels (402) which are rotationally matched with the cantilever (2), wherein one belt wheel (402) is close to the joint of the cantilever (2) and the rotating mechanism (3), and the other belt wheel (402) is close to one end part of the cantilever (2);

a timing belt (403) connected between the two pulleys (402);

a synchronous motor (404) coaxially and fixedly connected with the rotating shaft of any one belt wheel (402);

a slide block (405) fixed on the synchronous belt (403);

and a slider rail (406) fixed to the suspension (2), the slider (405) and the slider rail (406) being in sliding engagement.

3. The small intelligent balance cantilever crane device according to claim 2, wherein the synchronous motor (404) is coaxially and fixedly connected with the rotating shaft of the belt wheel (402) near the joint of the cantilever (2) and the rotating mechanism (3).

4. A small intelligent balanced cantilever crane assembly as claimed in any one of claims 1 to 3 wherein the force balancing mechanism comprises:

a lead screw (407) fixed on the cantilever (2) and arranged in parallel with the cantilever (2);

a lead screw nut guide rail (408) which is arranged in parallel with the lead screw (407) and is fixed on the cantilever (2);

a lead screw nut weight platform (409), wherein the lead screw nut weight platform (409) and the lead screw (407) form a lead screw nut pair and are in sliding fit with the lead screw nut guide rail (408);

and the screw motor (410), the screw motor (410) and one end of the screw (407) are coaxially and fixedly connected.

5. The small intelligent balanced cantilever crane device according to claim 4, wherein the lead screw motor (410) is located near the end where the cantilever (2) and the rotating mechanism (3) are connected.

6. A small smart balanced jib crane assembly, according to claim 1, characterized in that said rotation mechanism (3) comprises:

a worm gear reducer (301) fixed at the upper end of the supporting device (1);

a worm motor (308) coaxially and fixedly connected with a worm (304) of the worm gear reducer (301);

one end of the transmission shaft (309) is coaxially and fixedly connected with a worm wheel (303) of the worm gear reducer (301);

and the hinge (310) is fixed on the rod part of the cantilever (2), and the other end of the transmission shaft (309) is in rotating fit with the hinge (310).

7. The small intelligent balanced cantilever crane device according to claim 6, wherein said rotating mechanism (3) further comprises a hollow tube (311), said hollow tube (311) is disposed outside said hinge (310) and said transmission shaft (309), said transmission shaft (309) is rotatably fitted with an inner shoulder of said hollow tube (311) through a transmission shaft bearing (312).

8. A small smart balanced jib crane assembly according to claim 6 or 7 wherein said worm gear reducer (301) comprises:

a box body (302) fixed at the upper end of the supporting device (1);

the worm wheel (303) is arranged inside the box body (302), and the worm wheel (303) is in running fit with the box body (302) through a worm wheel bearing (305);

and a worm (304) which is matched with the worm wheel (303), wherein the worm (304) is rotationally matched with the box body (302) through a worm bearing (306).

9. The small intelligent balanced cantilever crane device according to claim 8, wherein the rotating mechanism (3) further comprises a fixing sleeve (314), and the fixing sleeve (314) is fixed on a shaft shoulder of the upper end face of the box body (302) and sleeved outside the hollow tube (311).

10. A small smart balanced jib crane assembly, according to claim 1, characterized in that said support assembly (1) comprises:

a base (101);

and the upright post (102) is detachably connected with one end of the base (101), and the rotating mechanism (3) is arranged at the other end of the upright post (102).