CN215003726U

CN215003726U - Crack monitoring device of crane girder

Info

Publication number: CN215003726U
Application number: CN202121307207.5U
Authority: CN
Inventors: 李云飞; 苏文胜; 王欣仁; 巫波; 胡东明
Original assignee: Special Equipment Safety Supervision Inspection Institute of Jiangsu Province
Current assignee: Special Equipment Safety Supervision Inspection Institute of Jiangsu Province
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2021-12-03
Anticipated expiration: 2031-06-11

Abstract

The utility model discloses a crack monitoring devices of hoist girder belongs to the hoist field, the crack monitoring devices of hoist girder, including two supports, two install integrated into one piece's girder body between the support, the top sliding connection of girder body has the dolly, the bottom of dolly is provided with the couple, two be provided with the range finding subassembly between the support, the inside of girder body is provided with stress detection subassembly, two the bottom of support is provided with drive assembly, the bottom of girder body is provided with displacement detection subassembly, stress detection subassembly includes six strain sensor and six mounting grooves. The utility model discloses a, the phenomenon that can effectual girder fatigue destruction detects the discovery, and the phenomenon that reduces fatigue crack takes place, possesses good security prediction function, reduces girder fracture and causes life and loss of property's phenomenon to take place.

Description

Crack monitoring device of crane girder

Technical Field

The utility model relates to a hoist field, more specifically say, relate to the crackle monitoring devices of hoist girder.

Background

The bridge crane is a hoisting device which is transversely erected above workshops, warehouses and material yards for hoisting materials, and because the two ends of the bridge crane are located on high cement columns or metal supports and are shaped like a bridge, the bridge frame of the bridge crane longitudinally runs along rails laid on the elevated frames on the two sides, the space below the bridge frame can be fully utilized for hoisting the materials and is not hindered by ground equipment.

The main beam of the crane is often tens of meters or even tens of meters away from the ground, so once the main beam is broken, serious life and property loss can be caused, but the problems of early detection of fatigue damage of the main beam of the existing crane and safety prediction of the main beam are difficult to solve, and therefore a crack monitoring device of the main beam of the crane is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the utility model aims to provide a crack monitoring devices of hoist girder to solve the problem of the early discovery of hoist girder fatigue failure and the security prediction of girder.

In order to solve the above problems, the utility model adopts the following technical proposal.

Crack monitoring devices of hoist girder, including two supports, two install integrated into one piece's girder body between the support, the top sliding connection of girder body has the dolly, the bottom of dolly is provided with the couple, two be provided with the range finding subassembly between the support, the inside of girder body is provided with stress detection subassembly, two the bottom of support is provided with drive assembly, the bottom of girder body is provided with displacement detection subassembly.

Stress detection subassembly includes six strain sensor and six mounting grooves, six the inside with the girder body is all seted up to the mounting groove, six strain sensor is fixed mounting to the inside of six mounting grooves respectively, six strain sensor is located the inside left and right sides and the middle part of girder body respectively.

The drive assembly comprises a servo motor, a fixing box, a screw rod and a thread block, the servo motor is fixedly mounted to the bottom of the left side support, the fixing box is fixedly connected to the bottom of the right side support, an output shaft of the servo motor is fixedly connected with the screw rod through a coupler, the right end of the screw rod penetrates through and is rotatably connected to the inside of the fixing box, the thread block is slidably connected to the inside of the fixing box, and the thread block is connected to the middle of the screw rod in a threaded mode.

The displacement detection subassembly includes slide bar, spring, accepts dish, displacement sensor, the top of slide bar runs through and sliding connection to the top of screw thread piece, accept the bottom of dish fixed connection to slide bar, displacement sensor fixed mounting is to accepting the bottom of dish, the middle part to the slide bar is established to the spring cover, spring fixed connection accepts the top of dish, spring fixed connection is to the bottom of screw thread piece, the top of slide bar is rotated and is connected with the ball, the bottom contact of ball and girder body.

The range finding subassembly includes laser range finding sensor and range finding board, the laser range finding sensor inlays the inside of establishing to the left side support, range finding board fixed connection is to the bottom of dolly.

The bottom of girder body is provided with control panel, displacement sensor, laser rangefinder sensor and six strain gauge sensors all with control panel bidirectional signal connection, control panel's output and servo motor's input signal connection.

Compared with the prior art, the utility model has the advantages of:

(1) the setting of two supports of this scheme utilization, be convenient for play the supporting role to the girder body, utilize the setting of dolly, be convenient for drive the couple motion, thereby carry out the transportation work of article, utilize drive assembly's setting, be convenient for drive displacement detection subassembly motion, thereby the displacement situation of change of girder body when effectual measurement carries out article transportation at whole device, utilize stress detection subassembly's setting, be convenient for the stress situation of change of real-time detection girder body, utilize the setting of range finding subassembly, be convenient for the position that the real-time detection dolly located on the girder body in the transportation.

(2) The setting of six mounting grooves of this scheme utilization is convenient for provide installation space to six strain sensor, utilizes the setting of six strain sensor, is convenient for detect the stress variation of girder body many places.

(3) This scheme utilization servo motor function to make the lead screw drive the screw thread piece and take place the motion, utilize the setting of fixed box, be convenient for play limiting displacement to the screw thread piece, reduce it and take place the skew phenomenon in the motion process.

(4) This scheme is when the motion of screw thread piece, thereby it takes place the motion to drive the slide bar, in the process of the article transportation, in case the girder body takes place deformation, thereby will extrude the slide bar, utilize the setting of ball, be convenient for reduce the wearing and tearing between slide bar and the girder body, the slide bar will downstream afterwards, displacement sensor will detect displacement data and take notes afterwards, can measure multiunit displacement data along with the movement track of screw thread piece in the whole motion process, after the article transportation is accomplished, the usable elasticity influence of accepting the spring on the dish, thereby it moves to the normal position with the ball to drive the slide bar, be convenient for carry out next time work.

(5) The setting of this scheme utilization range finding board is convenient for follow the dolly motion and take place the displacement, utilizes laser rangefinder sensor's setting, the motion condition of the real-time detection dolly of being convenient for to can confirm the influence of dolly different positions to the girder body in the transportation, thereby come contrast stress situation of change and displacement situation of change according to the dolly position at later stage convenient to use person.

(6) This scheme utilization control panel's setting is convenient for control the inside electrical components of whole device, and is more convenient, when six strain sensor and displacement sensor numerical value surpassed the default, control panel will receive the suggestion of reporting to the police to the staff of being convenient for knows the condition of girder body fast, is convenient for shut down the inspection and report an emergency and ask for help or increased vigilance.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the displacement detecting assembly and the driving assembly of the present invention;

fig. 3 is the explosion diagram of the structure of the main beam body and the stress detecting assembly of the present invention.

The reference numbers in the figures illustrate:

1. a support; 2. a main beam body; 3. a trolley; 4. hooking; 5. a ranging assembly; 501. a laser ranging sensor; 502. a distance measuring plate; 6. a drive assembly; 601. a servo motor; 602. a fixing box; 603. a screw rod; 604. a thread block; 7. a displacement detection assembly; 701. a slide bar; 702. a spring; 703. a bearing plate; 704. a displacement sensor; 8. a ball bearing; 9. a stress detection assembly; 901. a strain gauge sensor; 902. mounting grooves; 10. a control panel.

Detailed Description

Please refer to fig. 1-3, the utility model discloses in, the crackle monitoring device of crane girder, including two supports 1, install integrated into one piece's girder body 2 between two supports 1, the top sliding connection of girder body 2 has dolly 3, and the bottom of dolly 3 is provided with couple 4, is provided with range finding subassembly 5 between two supports 1, and the inside of girder body 2 is provided with stress detection subassembly 9, and the bottom of two supports 1 is provided with drive assembly 6, and the bottom of girder body 2 is provided with displacement detection subassembly 7.

The utility model discloses in, utilize the setting of two supports 1, be convenient for play the supporting role to girder body 2, utilize the setting of dolly 3, be convenient for drive couple 4 motion, thereby carry out the transportation work of article, utilize the setting of drive assembly 6, be convenient for drive displacement detection subassembly 7 motion, thereby the displacement variation of girder body 2 when effectual measurement carries out article transportation at whole device, utilize stress detection subassembly 9's setting, be convenient for the stress variation of real-time detection girder body 2, utilize the setting of range finding subassembly 5, be convenient for in the position that real-time detection dolly 3 is located on girder body 2 in the transportation.

Please refer to fig. 1-3, wherein: stress detection subassembly 9 includes six strain gauge sensors 901 and six mounting grooves 902, six mounting grooves 902 all set up with girder body 2's inside, six strain gauge sensors 901 respectively fixed mounting to six mounting grooves 902's inside, six strain gauge sensors 901 are located girder body 2 inside left and right sides and middle part respectively.

The utility model discloses in, utilize the setting of six mounting grooves 902, be convenient for provide installation space to six strain gauge sensors 901, utilize the setting of six strain gauge sensors 901, be convenient for detect the stress variation of girder body 2 many places.

Please refer to fig. 1-2, wherein: the driving assembly 6 comprises a servo motor 601, a fixing box 602, a screw rod 603 and a thread block 604, the servo motor 601 is fixedly mounted at the bottom of the left bracket 1, the fixing box 602 is fixedly connected to the bottom of the right bracket 1, an output shaft of the servo motor 601 is fixedly connected with the screw rod 603 through a coupler, the right end of the screw rod 603 penetrates through and is rotatably connected to the inside of the fixing box 602, the thread block 604 is slidably connected to the inside of the fixing box 602, and the thread block 604 is in threaded connection with the middle of the screw rod 603.

The utility model discloses in, utilize servo motor 601 function to make lead screw 603 drive thread block 604 and take place the motion, utilize the setting of fixed box 602, be convenient for play limiting displacement to thread block 604, reduce it and take place the skew phenomenon in the motion process.

Please refer to fig. 1-2, wherein: the displacement detection assembly 7 comprises a sliding rod 701, a spring 702, a bearing disc 703 and a displacement sensor 704, wherein the top end of the sliding rod 701 penetrates through and is slidably connected to the top of a threaded block 604, the bearing disc 703 is fixedly connected to the bottom end of the sliding rod 701, the displacement sensor 704 is fixedly installed at the bottom of the bearing disc 703, the spring 702 is sleeved on the middle of the sliding rod 701, the spring 702 is fixedly connected to the top of the bearing disc 703, the spring 702 is fixedly connected to the bottom of the threaded block 604, the top end of the sliding rod 701 is rotatably connected with a ball 8, and the ball 8 is in contact with the bottom of the main beam body 2.

The utility model discloses in, move as thread block 604, thereby it takes place the motion to drive slide bar 701, in the article transportation, in case girder body 2 takes place deformation, thereby will extrude slide bar 701, utilize the setting of ball 8, be convenient for reduce the wearing and tearing between slide bar 701 and the girder body 2, slide bar 701 will downstream afterwards, displacement sensor 704 will detect displacement data and carry out the record afterwards, can measure multiunit displacement data along with the movement track of thread block 604 in the whole motion process, after the article transportation is accomplished, the usable elasticity influence of spring 702 on receiving the dish 703, thereby it moves to the normal position with ball 8 to drive slide bar 701, be convenient for carry out next work.

Please refer to fig. 1, in which: the distance measuring component 5 comprises a laser distance measuring sensor 501 and a distance measuring plate 502, the laser distance measuring sensor 501 is embedded in the left side support 1, and the distance measuring plate 502 is fixedly connected to the bottom of the trolley 3.

The utility model discloses in, utilize the setting of range finding board 502, be convenient for follow the 3 motion of dolly and take place the displacement, utilize laser range finding sensor 501's setting, the motion circumstances of the real-time detection dolly 3 of being convenient for to can confirm dolly 3 in the influence of transportation different positions to girder body 2, thereby come contrast stress situation of change and displacement situation of change according to dolly 3 position at later stage convenient to use person.

Please refer to fig. 1, in which: the bottom of girder body 2 is provided with control panel 10, and displacement sensor 704, laser rangefinder sensor 501 and six strain gauge sensors 901 all are connected with control panel 10 two-way signal, and control panel 10's output and servo motor 601's input signal are connected.

The utility model discloses in, utilize control panel 10's setting, be convenient for control the inside electrical components of whole device, it is more convenient, when six strain sensor 901 and displacement sensor 704 numerical values surpassed the default, control panel 10 will receive the warning suggestion to the condition of girder body 2 is known fast to the staff of being convenient for, is convenient for shut down the inspection and overloads and warns.

The arrangement of the two brackets 1 is utilized to facilitate the supporting function to the main beam body 2, the arrangement of the trolley 3 is utilized to facilitate the movement of the hook 4, thereby carrying out the transferring work of the articles, the arrangement of the driving component 6 is utilized to facilitate the movement of the displacement detection component 7, thereby effectively measuring the displacement change condition of the main beam body 2 when the whole device transfers the articles, the servo motor 601 is utilized to operate, thereby the lead screw 603 drives the thread block 604 to move, the arrangement of the fixed box 602 is utilized to facilitate the limiting function to the thread block 604, thereby reducing the excursion phenomenon in the moving process, when the thread block 604 moves, thereby driving the sliding rod 701 to move, when the articles are transferred, once the main beam body 2 deforms, thereby extruding the sliding rod 701, and the arrangement of the ball 8 is utilized to facilitate the reduction of the abrasion between the sliding rod 701 and the main beam body 2, then the sliding rod 701 moves downwards, then the displacement sensor 704 detects and records displacement data, multiple sets of displacement data can be measured along with the movement track of the thread block 604 in the whole movement process, after the transfer of the object is completed, the elastic force influence of the spring 702 on the bearing disc 703 can be utilized to drive the sliding rod 701 and the ball 8 to move to the original position, the next work is convenient to carry out, the stress change condition of the main beam body 2 is convenient to detect in real time by utilizing the arrangement of the stress detection component 9, installation space is convenient to provide for the six strain sensors 901 by utilizing the arrangement of the six strain sensors 901, the stress change of multiple positions of the main beam body 2 is convenient to detect by utilizing the arrangement of the distance measurement component 5, the position of the trolley 3 on the main beam body 2 is convenient to detect in real time in the transfer process by utilizing the arrangement of the distance measurement plate 502, the device is convenient to move along with the trolley 3 to generate displacement, the arrangement of the laser ranging sensor 501 is convenient to detect the movement condition of the trolley 3 in real time, so that the influence of different positions of the trolley 3 on the main beam body 2 in the transferring process can be determined, a user can compare the stress change condition with the displacement change condition according to the position of the trolley 3 at a later stage, the arrangement of the control panel 10 is convenient to control the internal electrical components of the whole device, and is more convenient and faster, when the values of the six strain sensors 901 and the displacement sensor 704 exceed the preset values, the control panel 10 receives an alarm prompt, so that the worker can quickly know the condition of the main beam body 2, the shutdown inspection and overload warning are convenient, the whole device can effectively detect and discover the fatigue damage phenomenon of the main beam body 2, reduce the occurrence of fatigue cracks, and has a good safety prediction function, reduce the phenomenon that the main beam body 2 breaks and causes life and property loss.

Claims

1. Crack monitoring devices of hoist girder, including two supports (1), its characterized in that: install integrated into one piece's girder body (2) between support (1), the top sliding connection of girder body (2) has dolly (3), the bottom of dolly (3) is provided with couple (4), two be provided with range finding subassembly (5) between support (1), the inside of girder body (2) is provided with stress detection subassembly (9), two the bottom of support (1) is provided with drive assembly (6), the bottom of girder body (2) is provided with displacement detection subassembly (7).

2. The crack monitoring device of the crane girder according to claim 1, characterized in that: the stress detection assembly (9) comprises six strain sensors (901) and six mounting grooves (902), the six mounting grooves (902) are formed in the main beam body (2), the six strain sensors (901) are fixedly mounted in the six mounting grooves (902) respectively, and the six strain sensors (901) are located on the left side, the right side and the middle of the main beam body (2) respectively.

3. The crack monitoring device of the crane girder according to claim 2, wherein: drive assembly (6) include servo motor (601), fixed box (602), lead screw (603) and thread block (604), servo motor (601) fixed mounting is to the bottom of left side support (1), fixed box (602) fixed connection is to the bottom of right side support (1), the output shaft of servo motor (601) passes through shaft coupling and lead screw (603) fixed connection, the right-hand member of lead screw (603) runs through and rotates the inside of being connected to fixed box (602), thread block (604) sliding connection is to the inside of fixed box (602), thread block (604) threaded connection is to the middle part of lead screw (603).

4. The crack monitoring device of the crane girder according to claim 3, wherein: the displacement detection assembly (7) comprises a sliding rod (701), a spring (702), a bearing disc (703) and a displacement sensor (704), wherein the top end of the sliding rod (701) penetrates through and is connected to the top of a threaded block (604) in a sliding mode, the bearing disc (703) is fixedly connected to the bottom end of the sliding rod (701), the displacement sensor (704) is fixedly installed to the bottom of the bearing disc (703), the spring (702) is sleeved on the middle of the sliding rod (701), the spring (702) is fixedly connected to the top of the bearing disc (703), the spring (702) is fixedly connected to the bottom of the threaded block (604), the top end of the sliding rod (701) is rotatably connected with a ball (8), and the ball (8) is in contact with the bottom of the main beam body (2).

5. The crack monitoring device of the crane girder according to claim 4, wherein: range finding subassembly (5) include laser range finding sensor (501) and range finding board (502), laser range finding sensor (501) inlay the inside of establishing to left side support (1), range finding board (502) fixed connection is to the bottom of dolly (3).

6. The crack monitoring device of the crane girder according to claim 5, wherein: the bottom of girder body (2) is provided with control panel (10), displacement sensor (704), laser rangefinder sensor (501) and six strain gauge sensors (901) all with control panel (10) two-way signal connection, the output of control panel (10) and the input signal connection of servo motor (601).