CN113060651B - Electric crane with double lifting appliances - Google Patents
Electric crane with double lifting appliances Download PDFInfo
- Publication number
- CN113060651B CN113060651B CN202110284906.0A CN202110284906A CN113060651B CN 113060651 B CN113060651 B CN 113060651B CN 202110284906 A CN202110284906 A CN 202110284906A CN 113060651 B CN113060651 B CN 113060651B
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- Prior art keywords
- rod
- main beam
- fixedly connected
- lifting
- connection part
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
- B66C15/04—Safety gear for preventing collisions, e.g. between cranes or trolleys operating on the same track
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C6/00—Girders, or track-supporting structures, specially adapted for cranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C7/00—Runways, tracks or trackways for trolleys or cranes
- B66C7/02—Runways, tracks or trackways for trolleys or cranes for underhung trolleys or cranes
- B66C7/04—Trackway suspension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/14—Trolley or crane travel drives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/16—Travelling gear incorporated in or fitted to trolleys or cranes with means for maintaining alignment between wheels and track
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
Abstract
The invention relates to the technical field of cranes, in particular to an electric crane with double lifting appliances, which comprises a beam body, a lifting appliance component, a positioning structure and a synchronous connecting structure, wherein the beam body is provided with a lifting appliance connecting structure; the beam body comprises a main beam, guide rods, hinging rods and driving mechanisms, wherein the guide rods are parallel to the main beam and located on two sides of the top of the main beam, one ends of the hinging rods are hinged to the end portions of the guide rods, the other ends of the hinging rods are hinged to the end portions of the main beam, and the driving mechanisms are connected with the hinging rods and drive the hinging rods to swing. The invention has the beneficial effects that: the two lifting appliance components can respectively lift and convey different workpieces, so that the lifting efficiency of the electric crane is improved; the two lifting appliances can be mutually combined to form a whole, so that the stability of the beam product is improved; the guide rod not only can control the running vehicle to keep stable running direction, but also can be convenient for maintenance personnel to position the bending position when the main beam is bent.
Description
Technical Field
The invention relates to the technical field of cranes, in particular to an electric crane with double lifting appliances.
Background
The single-beam suspended electric crane is generally used in processing workshops, loading workshops, warehouses and the like of factories, and is generally formed by a beam body and end beams connected to two ends of the beam body, while the bottom of the beam body is generally provided with only one lifting appliance assembly walking on the beam body for lifting and transporting workpieces.
Because the integral structure of the electric crane is limited, only one electric crane can be installed in one factory building, and only one lifting appliance component is arranged on the existing electric crane, so that the lifting efficiency of the electric crane on a workpiece is low, and particularly for enterprises in which two production lines are arranged in parallel in one delivery room, the two production lines cannot be used for lifting at the same time. In addition, when lifting beam products, a single lifting appliance often causes incapability of keeping balance during lifting of the beam products, so that the lifting stability is insufficient, and certain potential safety hazards are provided.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: provided is an electric crane with double lifting appliances, which can improve lifting efficiency and lifting stability.
In order to solve the technical problems, the technical scheme of the invention is as follows: an electric crane with double lifting appliances comprises a beam body, a lifting appliance component, a positioning structure and a synchronous connecting structure;
the beam body comprises a main beam, guide rods, hinging rods and driving mechanisms, wherein the guide rods are parallel to the main beam and are positioned on two sides of the top of the main beam, one ends of the hinging rods are hinged with the end parts of the guide rods, the other ends of the hinging rods are hinged with the end parts of the main beam, and the driving mechanisms are connected with the hinging rods and drive the hinging rods to swing;
the lifting appliance assembly comprises two lifting vehicles and an electric hoist fixedly connected to one side of the lifting vehicles, and is connected to the bottom of the main girder in a sliding manner;
the positioning structure comprises a connecting rod and a fixing rod, the fixing rod is arranged in parallel with the main beam, a first longitudinal chute is formed in the surface, close to the other running vehicle, of the running vehicle, one end of the fixing rod is connected in the first longitudinal chute in a sliding manner, one end of the connecting rod is connected to the guide rod in a sliding manner, the other end of the connecting rod is hinged with the fixing rod, and a fixing hole corresponding to the position, when the fixing rod is located at the highest position, of the running vehicle is formed in the surface of the running vehicle;
the synchronous connection structure comprises a first connection part, a second connection part and a push-pull electromagnet, wherein the first connection part and the second connection part are respectively connected to two different running vehicles, one end of the first connection part, which is close to the second connection part, is provided with a groove, one end of the second connection part, which is close to the first connection part, is provided with a bump corresponding to the groove, and the push-pull electromagnet is fixedly connected to the running vehicle where the second connection part is located, and a movable iron core of the push-pull electromagnet is fixedly connected with the second connection part.
Specifically, the girder includes fixed beam, lower fixed beam, bracing beam and slide rail, go up fixed beam and lower fixed beam each other parallel and through bracing beam fixed connection, the guide bar is parallel and be located the fixed beam both sides on with last fixed beam, slide rail fixed connection is in the both sides of lower fixed beam, the gyro wheel of operation car rolls in the slide rail.
Specifically, the diagonal bracing beams are staggered in an X shape.
Specifically, the dead lever includes outer pole cover, interior ejector pin and spring, outer pole cover includes blind end and open end, the one end of interior ejector pin stretches into inside the outer pole cover from the blind end of outer pole cover, the spring sets up inside the outer pole cover, the one end and the blind end fixed connection of outer pole cover of spring, the other end and the tip fixed connection of interior ejector pin.
Specifically, one end of the inner ejector rod, which is positioned outside the outer rod sleeve, is fixedly connected with a rubber cushion block.
Specifically, the travelling crane is further provided with a second longitudinal chute, and the second connecting part is slidably connected in the second longitudinal chute.
Specifically, limit ribs are arranged on two sides of the second longitudinal sliding groove, and limit grooves corresponding to the limit ribs are formed in the second connecting portion.
Specifically, the driving mechanism comprises a stepping motor and a speed reducer connected with the stepping motor, wherein the stepping motor is fixedly connected to the end part of the main beam, and a power output shaft of the speed reducer is fixedly connected with one end of the hinge rod hinged to the main beam.
The invention has the beneficial effects that: the two lifting appliance components can respectively lift and convey different workpieces, so that the lifting efficiency of the electric crane is improved; the two lifting appliances can be mutually combined to form a whole, so that the stability of the beam product is improved; the guide rod not only can control the running vehicle to keep stable running direction, but also can be convenient for maintenance personnel to position the bending position when the main beam is bent.
Drawings
FIG. 1 is a first schematic structural view of an electric crane with dual spreaders in accordance with an embodiment of the invention;
FIG. 2 is a second schematic structural view of the electric crane with double slings according to the embodiment of the present invention;
FIG. 3 is a front view of an electric hoist with dual spreaders in accordance with an embodiment of the invention;
FIG. 4 is a bottom view of the electric hoist with dual spreaders in accordance with an embodiment of the invention;
FIG. 5 is a schematic view of a structure of a fixing rod according to an embodiment of the present invention;
description of the reference numerals:
1. a beam body; 11. a main beam; 111. an upper fixed beam; 112. a lower fixed beam; 113. a diagonal bracing beam; 114. a slide rail; 12. a guide rod; 13. a hinge rod; 14. a driving mechanism; 141. a stepping motor; 142. a speed reducer; 2. a spreader assembly; 21. a traveling crane; 211. a first longitudinal chute; 212. a fixing hole; 213. a second longitudinal chute; 214. limit ribs; 22. an electric hoist; 3. a positioning structure; 31. a connecting rod; 32. a fixed rod; 321. an outer rod sleeve; 322. an inner ejector rod; 323. a spring; 4. a synchronous connection structure; 41. a first connection portion; 411. a groove; 42. a second connecting portion; 421. a bump; 422. a limit groove; 43. push-pull type electromagnet.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 to 5, the electric crane with double lifting appliances of the invention comprises a beam body 1, a lifting appliance assembly 2, a positioning structure 3 and a synchronous connecting structure 4;
the beam body 1 comprises a main beam 11, a guide rod 12, a hinging rod 13 and a driving mechanism 14, wherein the guide rod 12 is parallel to the main beam 11 and positioned on two sides of the top of the main beam 11, one end of the hinging rod 13 is hinged with the end part of the guide rod 12, the other end of the hinging rod is hinged with the end part of the main beam 11, and the driving mechanism 14 is connected with the hinging rod 13 and drives the hinging rod 13 to swing;
the two lifting appliance assemblies 2 are connected to the bottom of the main beam 11 in a sliding manner, and each lifting appliance assembly 2 comprises a running vehicle 21 and an electric hoist 22 fixedly connected to one side of the running vehicle 21;
the positioning structure 3 comprises a connecting rod 31 and a fixing rod 32, the fixing rod 32 is arranged in parallel with the main beam 11, a first longitudinal sliding groove 211 is formed in the surface of the running vehicle 21, which is close to the other running vehicle 21, one end of the fixing rod 32 is slidably connected in the first longitudinal sliding groove 211, one end of the connecting rod 31 is slidably connected on the guide rod 12, the other end of the connecting rod is hinged with the fixing rod 32, and a fixing hole 212 which is positioned when the fixing rod 32 is positioned at the highest position is formed in the surface of the running vehicle 21;
the synchronous connection structure 4 comprises a first connection portion 41, a second connection portion 42 and a push-pull electromagnet 43, the first connection portion 41 and the second connection portion 42 are respectively connected to two different operation vehicles 21, a groove 411 is formed in one end, close to the second connection portion 42, of the first connection portion 41, a bump 421 corresponding to the groove 411 is arranged in one end, close to the first connection portion 41, of the second connection portion 42, the push-pull electromagnet 43 is fixedly connected to the operation vehicle 21 where the second connection portion 42 is located, and a movable iron core of the push-pull electromagnet 43 is fixedly connected with the second connection portion 42.
The working principle of the invention is as follows: when two lifting tool components 2 on the crane respectively lift different workpieces, the running vehicles 21 of the two lifting tool components 2 respectively run on the beam body 1 through the respective running vehicles 21 and respectively transport the workpieces to different positions, at this time, the fixing rod 32 of the positioning structure 3 is positioned at the lowest end of the first longitudinal sliding groove 211 and is staggered with the fixing hole 212 on the other running vehicle 21, and when the two running vehicles 21 are close to each other, the fixing rod 32 of one running vehicle 21 props against the surface of the other running vehicle 21, so that collision between the two running vehicles is avoided. In addition, the connecting rod 31 one end of the positioning structure 3 slides on the guide rod 12, so that the accuracy of the running direction of the running vehicle 21 can be ensured, meanwhile, the running direction of the running vehicle 21 can not be kept horizontal all the time because the guide rod 12 does not bear the gravity during hoisting, once the main beam 11 is bent, interference can be necessarily caused between the connecting rod 31 and the guide rod 12 due to the fact that the running direction of the running vehicle 21 cannot be kept horizontal, and the position where the main beam 11 is deformed can be conveniently and rapidly determined by an maintainer.
When two lifting tool components 2 need to be combined with each other to form a whole, the driving mechanism 14 drives the hinging rod 13 to swing upwards, so that the whole guide rod 12 swings upwards together, the connecting rod 31 is driven to move, the fixing rod 32 slides upwards along the first longitudinal sliding groove 211, when the fixing rod 32 slides to the topmost end of the first longitudinal sliding groove 211, the two running vehicles 21 are controlled to approach each other, the fixing rod 32 passes through the fixing hole 212 of the other running vehicle 21, meanwhile, the synchronous connecting structure 4 is controlled to electrify the push-pull electromagnet 43, the movable iron core of the push-pull electromagnet 43 drives the second connecting part 42 to move upwards, until the lug 421 of the second connecting part 42 moves to the position above the groove 411 of the first connecting part 41, the power supply of the push-pull electromagnet 43 is disconnected, the second connecting part 42 moves downwards, and the lug 421 is embedded into the groove 411, and therefore the butt joint combination between the two lifting tool components 2 is realized.
From the above description, the beneficial effects of the invention are as follows: the two lifting appliance components can respectively lift and convey different workpieces, so that the lifting efficiency of the electric crane is improved; the two lifting appliances can be mutually combined to form a whole, so that the stability of the beam product is improved; the guide rod not only can control the running vehicle to keep stable running direction, but also can be convenient for maintenance personnel to position the bending position when the main beam is bent.
Further, the main beam 11 includes an upper fixing beam 111, a lower fixing beam 112, an inclined strut 113 and a sliding rail 114, the upper fixing beam 111 and the lower fixing beam 112 are parallel to each other and fixedly connected through the inclined strut 113, the guide rod 12 is parallel to the upper fixing beam 111 and located at two sides of the upper fixing beam 111, the sliding rail 114 is fixedly connected at two sides of the lower fixing beam 112, and the roller of the running vehicle 21 rolls in the sliding rail 114.
According to the description, the main beam is formed by connecting the upper fixing beams and the lower fixing beams in parallel, so that the lifting appliance can bear loads by the upper fixing beams and the lower fixing beams simultaneously when lifting a workpiece, the bearing positions of the upper fixing beams and the lower fixing beams are staggered by the diagonal brace, the main beam is prevented from being bent integrally due to the fact that the loads are concentrated at the same position, and the bearing capacity of the main beam is improved.
Further, the diagonal bracing beams 113 are staggered in an X-shape.
From the above description, the diagonal bracing beams are staggered in an X shape, so that the bearing capacity of the main beam and the connection stability between the upper fixed beam and the lower fixed beam can be further improved.
Further, the fixing rod 32 includes an outer rod sleeve 321, an inner rod sleeve 322 and a spring 323, the outer rod sleeve 321 includes a closed end and an open end, one end of the inner rod sleeve 322 extends into the outer rod sleeve 321 from the closed end of the outer rod sleeve 321, the spring 323 is disposed inside the outer rod sleeve 321, one end of the spring 323 is fixedly connected with the closed end of the outer rod sleeve 321, and the other end is fixedly connected with the end of the inner rod sleeve 322.
As can be seen from the above description, when two running vehicles respectively run, the end of the inner ejector rod will abut against the surface of the other running vehicle when the two running vehicles approach, and the spring is compressed to enable the inner ejector rod to be recovered into the outer rod sleeve, so as to form a buffer, thereby avoiding the fixing rod from being bent due to overlarge impact between the two running vehicles.
Further, a rubber cushion block is fixedly connected to one end of the inner ejector rod 322, which is located outside the outer rod sleeve 321.
Further, the running vehicle 21 is further provided with a second longitudinal sliding groove 213, and the second connecting portion 42 is slidably connected in the second longitudinal sliding groove 213.
As is apparent from the above description, the second longitudinal sliding groove can improve the stability of the second connecting portion when moving up and down.
Further, two sides of the second longitudinal sliding groove 213 are provided with a limiting rib 214, and the second connecting portion 42 is provided with a limiting groove 422 corresponding to the limiting rib 214.
From the above description, it is clear that the second connecting portion can have a better horizontal bearing capacity when the first connecting portion and the second connecting portion are connected to each other by the limit rib.
Further, the driving mechanism 14 includes a stepper motor 141 and a decelerator 142 connected to the stepper motor 141, the stepper motor 141 is fixedly connected to the end of the main beam 11, and a power output shaft of the decelerator 142 is fixedly connected to one end of the hinge rod 13 hinged to the main beam 11.
Example 1
As shown in fig. 1 and 2, an electric crane with double lifting appliances comprises a beam body 1, a lifting appliance assembly 2, a positioning structure 3 and a synchronous connecting structure 4;
the beam body 1 comprises a main beam 11, a guide rod 12, a hinging rod 13 and a driving mechanism 14, wherein the guide rod 12 is parallel to the main beam 11 and positioned on two sides of the top of the main beam 11, one end of the hinging rod 13 is hinged with the end part of the guide rod 12, the other end of the hinging rod is hinged with the end part of the main beam 11, and the driving mechanism 14 is connected with the hinging rod 13 and drives the hinging rod 13 to swing;
the two lifting appliance assemblies 2 are connected to the bottom of the main beam 11 in a sliding manner, and each lifting appliance assembly 2 comprises a running vehicle 21 and an electric hoist 22 fixedly connected to one side of the running vehicle 21;
the positioning structure 3 comprises a connecting rod 31 and a fixing rod 32, the fixing rod 32 is arranged in parallel with the main beam 11, a first longitudinal sliding groove 211 is formed in the surface of the running vehicle 21, which is close to the other running vehicle 21, one end of the fixing rod 32 is slidably connected in the first longitudinal sliding groove 211, one end of the connecting rod 31 is slidably connected on the guide rod 12, the other end of the connecting rod is hinged with the fixing rod 32, and a fixing hole 212 which is positioned when the fixing rod 32 is positioned at the highest position is formed in the surface of the running vehicle 21;
as shown in fig. 3 and fig. 4, the synchronous connection structure 4 includes a first connection portion 41, a second connection portion 42, and a push-pull electromagnet 43, where the first connection portion 41 and the second connection portion 42 are respectively connected to two different running vehicles 21, one end of the first connection portion 41 near the second connection portion 42 is provided with a groove 411, one end of the second connection portion 42 near the first connection portion 41 is provided with a bump 421 corresponding to the groove 411, the push-pull electromagnet 43 is fixedly connected to the running vehicle 21 where the second connection portion 42 is located, a movable iron core of the push-pull electromagnet 43 is fixedly connected with the second connection portion 42, the running vehicle 21 is further provided with a second longitudinal chute 213, the second connection portion 42 is slidably connected in the second longitudinal chute 213, two sides of the second longitudinal chute 213 are provided with limit ribs 214, and the second connection portion 42 is provided with limit grooves 422 corresponding to the limit ribs 214;
the main beam 11 comprises an upper fixed beam 111, a lower fixed beam 112, inclined supporting beams 113 and sliding rails 114, wherein the upper fixed beam 111 and the lower fixed beam 112 are mutually parallel and fixedly connected through the inclined supporting beams 113, the guide rods 12 are parallel to the upper fixed beam 111 and positioned on two sides of the upper fixed beam 111, the sliding rails 114 are fixedly connected on two sides of the lower fixed beam 112, rollers of the running vehicle 21 roll in the sliding rails 114, and the inclined supporting beams 113 are staggered in an X shape;
as shown in fig. 5, the fixing rod 32 includes an outer rod sleeve 321, an inner rod 322 and a spring 323, wherein the outer rod sleeve 321 includes a closed end and an open end, one end of the inner rod 322 extends into the outer rod sleeve 321 from the closed end of the outer rod sleeve 321, the spring 323 is disposed inside the outer rod sleeve 321, one end of the spring 323 is fixedly connected with the closed end of the outer rod sleeve 321, the other end of the spring 323 is fixedly connected with the end of the inner rod 322, and one end of the inner rod 322 located outside the outer rod sleeve 321 is fixedly connected with a rubber cushion block;
the driving mechanism 14 comprises a stepping motor 141 and a speed reducer 142 connected with the stepping motor 141, the stepping motor 141 is fixedly connected to the end part of the main beam 11, and a power output shaft of the speed reducer 142 is fixedly connected with one end of the hinge rod 13 hinged to the main beam 11.
In summary, the beneficial effects provided by the invention are as follows: the two lifting appliance components can respectively lift and convey different workpieces, so that the lifting efficiency of the electric crane is improved; the two lifting appliances can be mutually combined to form a whole, so that the stability of the beam product is improved; the guide rod not only can control the running vehicle to keep stable running direction, but also can be convenient for maintenance personnel to position the bending position when the main beam is bent. The girder is formed by two parallel upper fixed beams and lower fixed beams interconnect, can make the hoist bear the load by upper and lower two fixed beams simultaneously when hoisting the work piece, and the diagonal brace can make the bearing position of upper and lower two fixed beams stagger each other, avoids the load to concentrate on same position and leads to the girder to wholly take place crookedly, has improved the bearing capacity of girder. The diagonal bracing beams are staggered in an X shape, so that the bearing capacity of the main beam can be further improved, and the connection stability between the upper fixing beam and the lower fixing beam can be further improved. Under the condition that two running vehicles respectively run, when the two running vehicles are close to each other, the end part of the inner ejector rod can prop against the surface of the other running vehicle, and meanwhile, the spring is compressed to enable the inner ejector rod to be recovered into the outer rod sleeve to form buffering, so that the problem that the fixing rod is bent due to overlarge impact between the two running vehicles is avoided. The second longitudinal sliding groove can improve the stability of the second connecting part during up-and-down movement. When the limiting rib can enable the first connecting portion and the second connecting portion to be connected with each other, the second connecting portion can have better horizontal bearing capacity.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.
Claims (8)
1. The electric crane with the double lifting appliances is characterized by comprising a beam body, a lifting appliance assembly, a positioning structure and a synchronous connecting structure;
the beam body comprises a main beam, guide rods, hinging rods and driving mechanisms, wherein the guide rods are parallel to the main beam and are positioned on two sides of the top of the main beam, one ends of the hinging rods are hinged with the end parts of the guide rods, the other ends of the hinging rods are hinged with the end parts of the main beam, and the driving mechanisms are connected with the hinging rods and drive the hinging rods to swing;
the lifting appliance assembly comprises two lifting vehicles and an electric hoist fixedly connected to one side of the lifting vehicles, and is connected to the bottom of the main girder in a sliding manner;
the positioning structure comprises a connecting rod and a fixing rod, the fixing rod is arranged in parallel with the main beam, a first longitudinal chute is formed in the surface, close to the other running vehicle, of the running vehicle, one end of the fixing rod is connected in the first longitudinal chute in a sliding manner, one end of the connecting rod is connected to the guide rod in a sliding manner, the other end of the connecting rod is hinged with the fixing rod, and a fixing hole corresponding to the position, when the fixing rod is located at the highest position, of the running vehicle is formed in the surface of the running vehicle;
the synchronous connection structure comprises a first connection part, a second connection part and a push-pull electromagnet, wherein the first connection part and the second connection part are respectively connected to two different running vehicles, one end of the first connection part, which is close to the second connection part, is provided with a groove, one end of the second connection part, which is close to the first connection part, is provided with a bump corresponding to the groove, and the push-pull electromagnet is fixedly connected to the running vehicle where the second connection part is located, and a movable iron core of the push-pull electromagnet is fixedly connected with the second connection part.
2. The electric hoist of claim 1, characterized in that the main beam comprises an upper fixed beam, a lower fixed beam, an inclined strut and a slide rail, the upper fixed beam and the lower fixed beam are parallel to each other and fixedly connected through the inclined strut, the guide rod is parallel to the upper fixed beam and positioned at two sides of the upper fixed beam, the slide rail is fixedly connected at two sides of the lower fixed beam, and the roller of the running vehicle rolls in the slide rail.
3. The electric hoist with double slings according to claim 2, characterized in that the diagonal bracing beams are staggered in an X-shape.
4. The electric hoist of claim 1, characterized in that the fixed rod comprises an outer rod sleeve, an inner ejector rod and a spring, the outer rod sleeve comprises a closed end and an open end, one end of the inner ejector rod extends into the outer rod sleeve from the closed end of the outer rod sleeve, the spring is arranged in the outer rod sleeve, one end of the spring is fixedly connected with the closed end of the outer rod sleeve, and the other end of the spring is fixedly connected with the end part of the inner ejector rod.
5. The electric hoist with double slings according to claim 4, characterized in that one end of the inner mandril outside the outer mandril sleeve is fixedly connected with a rubber cushion block.
6. The electric crane with double lifting appliances according to claim 1, wherein the travelling crane is further provided with a second longitudinal chute, and the second connecting part is slidably connected in the second longitudinal chute.
7. The electric crane with double slings according to claim 6, wherein two sides of the second longitudinal sliding groove are provided with limiting ribs, and the second connecting part is provided with limiting grooves corresponding to the limiting ribs.
8. The electric hoist of claim 1, characterized in that the driving mechanism comprises a stepping motor and a speed reducer connected with the stepping motor, the stepping motor is fixedly connected to the end of the main beam, and a power output shaft of the speed reducer is fixedly connected with one end of the hinge rod hinged to the main beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110284906.0A CN113060651B (en) | 2021-03-17 | 2021-03-17 | Electric crane with double lifting appliances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110284906.0A CN113060651B (en) | 2021-03-17 | 2021-03-17 | Electric crane with double lifting appliances |
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| Publication Number | Publication Date |
|---|---|
| CN113060651A CN113060651A (en) | 2021-07-02 |
| CN113060651B true CN113060651B (en) | 2023-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110284906.0A Active CN113060651B (en) | 2021-03-17 | 2021-03-17 | Electric crane with double lifting appliances |
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| CN (1) | CN113060651B (en) |
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| CN111470431A (en) * | 2020-05-18 | 2020-07-31 | 中铁工程机械研究设计院有限公司 | Large-tonnage pipe ring hoisting machine |
| CN212609138U (en) * | 2020-06-09 | 2021-02-26 | 河南新起腾升起重设备有限公司 | Single-girder grab portal crane |
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| KR100724715B1 (en) * | 2006-07-21 | 2007-06-04 | 한국고벨주식회사 | Hoist for low space crane |
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| CN210260893U (en) * | 2019-04-23 | 2020-04-07 | 长春德通起重输送设备有限公司 | Crane with anti-swing hoisting device |
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| CN212609138U (en) * | 2020-06-09 | 2021-02-26 | 河南新起腾升起重设备有限公司 | Single-girder grab portal crane |
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| CN113060651A (en) | 2021-07-02 |
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