CN113003436B - Prevent electric hoist of girder deformation - Google Patents
Prevent electric hoist of girder deformation Download PDFInfo
- Publication number
- CN113003436B CN113003436B CN202110219717.5A CN202110219717A CN113003436B CN 113003436 B CN113003436 B CN 113003436B CN 202110219717 A CN202110219717 A CN 202110219717A CN 113003436 B CN113003436 B CN 113003436B
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- Prior art keywords
- main beam
- sliding
- main
- push
- fixedly connected
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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
- B66C19/02—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries collapsible
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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
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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
- B66C9/18—Travelling gear incorporated in or fitted to trolleys or cranes with means for locking trolleys or cranes to runways or tracks to prevent inadvertent movements
Abstract
The invention relates to the technical field of cranes, in particular to an electric crane for preventing a main beam from deforming, which comprises a main beam, an auxiliary beam, an inclined support beam, a sliding beam, an end beam, a running vehicle and an electric hoist, wherein the main beam is connected with the auxiliary beam through a cable; the main beam both ends are end beam of fixedly connected with respectively, secondary beam parallel arrangement is in the main beam top, the length of secondary beam is less than the length of main beam, the both ends of secondary beam are respectively through the both ends fixed connection of bracing roof beam with the main beam. The invention has the beneficial effects that: the auxiliary beam and the inclined supporting beam can enable part of force borne by the main beam to be transmitted to the end part of the main beam, so that directional torque is formed at two ends of the main beam, bending torque formed on the middle part of the main beam when a workpiece is hoisted is offset, and the bending resistance of the main beam is improved; because the bending resistance of the main beam is improved, and meanwhile, the main beam and the auxiliary beam can bear the stress together, the length of the main beam can be prolonged, so that the travel of the running vehicle is improved, and the integral bearing capacity of the electric crane can be improved.
Description
Technical Field
The invention relates to the technical field of cranes, in particular to an electric crane capable of preventing a main beam from deforming.
Background
The single-beam suspended electric crane is generally used in processing workshops, loading and unloading workshops, warehouses and the like of factories, a main body structure is generally formed by a main beam and end beams connected to two ends of the main beam, and an electric hoist is hoisted above the main beam through a running vehicle to run along the main beam.
However, because of structural limitations, the length of the main beam of the single-beam suspension crane is not suitable to be too long, and if the main beam is easy to bend in the process of suspending heavy objects for a long time, for a building material processing plant, the produced and processed product itself is a beam product with a longer length, and when the beam product is transferred, the electric crane needs to have a longer main beam stroke, and a single-beam suspension crane cannot meet the requirements, therefore, the solution provided by the existing processing plant is to install two sets of electric starters in the plant to suspend the workpiece, which is not only inconvenient to operate, but also has higher investment cost of equipment.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provided is an electric crane capable of preventing a main beam from deforming, by which the bending strength of the main beam can be improved and the main beam stroke of the electric crane can be extended.
In order to solve the technical problems, the technical scheme of the invention is as follows: an electric crane capable of preventing a main beam from deforming comprises a main beam, a secondary beam, an inclined supporting beam, a sliding beam, an end beam, a running vehicle and an electric hoist;
the two ends of the main beam are respectively and fixedly connected with an end beam, the secondary beam is arranged above the main beam in parallel, the length of the secondary beam is smaller than that of the main beam, and the two ends of the secondary beam are respectively and fixedly connected with the two ends of the main beam through inclined supporting beams;
the section of the main beam is I-shaped, sliding grooves are formed in two sides of the main beam, the cross section of the running vehicle is in a concave shape, rolling wheels are arranged on two sides of the inner wall of the running vehicle, the rolling wheels are connected in the sliding grooves in the two sides of the main beam in a rolling mode, and the electric hoist is fixedly connected to one side of the running vehicle;
the sliding beams are arranged in pairs and symmetrically arranged at two ends of the operation vehicle, one end of each sliding beam is fixedly connected to the top end of the operation vehicle, and the other end of each sliding beam is connected to the auxiliary beam in a sliding mode.
Specifically, a first braking device is arranged between the running vehicle and the main beam, and a second braking device is arranged between the sliding beam and the secondary beam.
Specifically, the first braking device comprises a first friction disc, a first spring and a first push-pull electromagnet, the first push-pull electromagnet is fixedly connected inside the running vehicle, the first spring is sleeved on the outer side of a movable sliding rod of the first push-pull electromagnet, and the first friction disc is fixedly connected to the top end of the movable sliding rod of the first push-pull electromagnet and located below the main beam.
Specifically, the second braking device comprises a second friction disc, a second spring and a second push-pull electromagnet, the second push-pull electromagnet is fixedly connected to the top of the sliding beam, the spring is sleeved on the outer side of a movable sliding rod of the second push-pull electromagnet, and the second friction disc is fixedly connected to the end portion of the movable sliding rod of the second push-pull electromagnet and located between the auxiliary beam and the sliding beam.
Specifically, the sliding beam comprises a beam body and a transverse extension part arranged at the top end of the beam body, the transverse extension part is erected on the auxiliary beam, and the bottom of the transverse extension part is provided with a roller which rolls along the auxiliary beam.
Specifically, a hard nylon sleeve is embedded in the surface of the roller at the bottom of the transverse extension part.
Specifically, any one of the sliding beams is obliquely arranged, and the oblique direction of the sliding beam is opposite to that of the closest raking beam.
Specifically, the outer cover body is arranged on the outer sides of the main beam and the auxiliary beam in a covering mode.
The invention has the beneficial effects that: the auxiliary beam and the inclined supporting beam can enable part of force borne by the main beam to be transmitted to the end part of the main beam, so that directional torque is formed at two ends of the main beam, bending torque formed on the middle part of the main beam when a workpiece is hoisted is counteracted, and the bending resistance of the main beam is improved; because the bending resistance of the main beam is improved, and meanwhile, the main beam and the auxiliary beam can bear the stress together, the length of the main beam can be prolonged, so that the travel of the running vehicle is improved, and the integral bearing capacity of the electric crane can be improved.
Drawings
FIG. 1 is a schematic structural diagram of an electric crane for preventing deformation of a main beam according to an embodiment of the present invention;
FIG. 2 is a sectional view of an electric crane for preventing deformation of a main girder according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a second brake device according to an embodiment of the present invention;
description of reference numerals:
1. a main beam; 2. a secondary beam; 3. a diagonal bracing beam; 4. a sliding beam; 41. a beam body; 42. a lateral extension; 5. an end beam; 6. a running vehicle; 7. an electric hoist; 8. a first braking device; 81. a first friction disk; 82. a first spring; 83. a first push-pull electromagnet; 9. a second brake device; 91. a second friction disk; 92. a second spring; 93. a second push-pull electromagnet; 10. an outer cover body.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 to 3, the electric crane for preventing the deformation of the main beam comprises a main beam 1, an auxiliary beam 2, an inclined supporting beam 3, a sliding beam 4, an end beam 5, a running vehicle 6 and an electric hoist 7;
two ends of the main beam 1 are respectively and fixedly connected with an end beam 5, the secondary beam 2 is arranged above the main beam 1 in parallel, the length of the secondary beam 2 is less than that of the main beam 1, and two ends of the secondary beam 2 are respectively and fixedly connected with two ends of the main beam 1 through inclined supporting beams 3;
the section of the main beam 1 is I-shaped, sliding grooves are formed in two sides of the main beam 1, the cross section of the operation vehicle 6 is in a concave shape, rolling wheels are arranged on two sides of the inner wall of the operation vehicle 6 and are connected in the sliding grooves in the two sides of the main beam 1 in a rolling manner, and the electric hoist 7 is fixedly connected to one side of the operation vehicle 6;
the sliding beams 4 are arranged in pairs and symmetrically arranged at two ends of the operation vehicle 6, one end of each sliding beam 4 is fixedly connected to the top end of the operation vehicle 6, and the other end of each sliding beam 4 is connected to the auxiliary beam 2 in a sliding manner.
The working principle of the invention is as follows: when the operation vehicle 6 drives the electric hoist 7 to slide on the main beam 1, the sliding beam 4 can move on the auxiliary beam 2 along with the operation vehicle 6, and when the electric hoist 7 bears a heavy object, partial gravity can be transmitted to the auxiliary beam 2 through the sliding beam 4, because the two ends of the auxiliary beam 2 are fixedly connected to the two ends of the main beam 1 through the inclined supporting beams 3, opposite-direction moments can be formed at the two ends of the main beam 1, so that the moments of the operation vehicle 6 received in the middle of the main beam 1 are offset to a certain extent, the balance of the main beam 1 is further realized, the possibility of bending of the main beam 1 is reduced, the overall length of the main beam 1 can be finally prolonged, and the stroke of the operation vehicle 6 on the main beam 1 is further improved.
As can be seen from the above description, the beneficial effects of the present invention are: the auxiliary beam and the inclined supporting beam can enable part of force borne by the main beam to be transmitted to the end part of the main beam, so that directional torque is formed at two ends of the main beam, bending torque formed on the middle part of the main beam when a workpiece is hoisted is offset, and the bending resistance of the main beam is improved; because the bending resistance of the main beam is improved, and meanwhile, the main beam and the auxiliary beam can bear the stress together, the length of the main beam can be prolonged, so that the travel of the running vehicle is improved, and the integral bearing capacity of the electric crane can be improved.
Further, a first brake device 8 is arranged between the operation vehicle 6 and the main beam 1, and a second brake device 9 is arranged between the sliding beam 4 and the auxiliary beam 2.
According to the above description, the first brake device and the second brake device can synchronously provide braking force for the operating vehicle, so that the stability of the operating vehicle during braking is improved, when any one brake device fails, the other brake device can keep the minimum braking requirement, and accidents caused by failure of the brake device in the process of hoisting a workpiece by the operating vehicle can be avoided.
Further, the first brake device 8 comprises a first friction disc 81, a first spring 82 and a first push-pull electromagnet 83, the first push-pull electromagnet 83 is fixedly connected inside the traveling vehicle 6, the first spring 82 is sleeved outside a movable sliding rod of the first push-pull electromagnet 83, and the first friction disc 81 is fixedly connected to the top end of the movable sliding rod of the first push-pull electromagnet 83 and located below the main beam 1.
As can be seen from the above description, when the running vehicle runs, the first push-pull electromagnet 83 is kept in an energized state, the movable sliding rod in the first push-pull electromagnet 83 is kept in a contracted state, the first friction disk is not in contact with the main beam at this time, when the running vehicle brakes, the first push-pull electromagnet 83 is powered off, the movable sliding rod jacks up, and meanwhile, the first spring rebounds and tightly presses the first friction disk on the main beam, so that the braking is realized by using friction force.
Further, the second braking device 9 includes a second friction disc 91, a second spring 92 and a second push-pull electromagnet 93, the second push-pull electromagnet 93 is fixedly connected to the top of the sliding beam 4, the spring is sleeved on the outer side of the movable sliding rod of the second push-pull electromagnet 93, and the second friction disc 91 is fixedly connected to the end of the movable sliding rod of the second push-pull electromagnet 93 and located between the secondary beam 2 and the sliding beam 4.
As can be seen from the above description, in the process that the sliding beam moves along the secondary beam, the second push-pull electromagnet is kept in an electrified state, the movable sliding rod in the second push-pull electromagnet is kept in a contracted state, the second friction disc is not in contact with the secondary beam at the moment, when the sliding beam brakes, the second push-pull electromagnet is powered off, the movable sliding rod is ejected outwards, and the second spring rebounds and tightly presses the second friction disc on the secondary beam, so that the braking is realized by using the friction force.
Further, the sliding beam 4 comprises a beam body and a transverse extension portion 42 arranged at the top end of the beam body 41, the transverse extension portion 42 is erected on the secondary beam 2, and the bottom of the transverse extension portion 42 is provided with a roller which rolls along the secondary beam 2.
Further, a hard nylon sleeve is embedded in the roller surface at the bottom of the transverse extension portion 42.
From the above description, it can be seen that the rigid nylon sleeve enables the rollers at the bottom of the lateral extension to roll on the secondary beam without slipping.
Furthermore, any one of the sliding beams 4 is obliquely arranged and the oblique direction is opposite to that of the closest raking beam 3.
As can be seen from the above description, the sliding beam and the closest raking beam have opposite inclination directions, so that a trapezoidal support structure can be formed among the sliding beam, the raking beam, the main beam and the secondary beam, thereby improving the stability of the whole structure.
Further, still include the outer cover body, the outer cover body cover is located the girder 1 and the auxiliary girder 2 outside.
According to the description, the outer cover body can play a dustproof effect, and the influence of dust on the main beam and the auxiliary beam on the normal movement of the running vehicle and the sliding beam is avoided.
Example one
As shown in fig. 1, an electric crane for preventing a main beam from deforming comprises a main beam 1, a secondary beam 2, a diagonal bracing beam 3, a sliding beam 4, an end beam 5, a running vehicle 6 and an electric hoist 7;
two ends of the main beam 1 are respectively and fixedly connected with an end beam 5, the auxiliary beam 2 is arranged above the main beam 1 in parallel, the length of the auxiliary beam 2 is smaller than that of the main beam 1, and two ends of the auxiliary beam 2 are respectively and fixedly connected with two ends of the main beam 1 through inclined supporting beams 3;
as shown in fig. 2, the section of the main beam 1 is i-shaped, sliding grooves are formed in two sides of the main beam 1, the cross section of the operating vehicle 6 is in a shape of Chinese character 'ao', rollers are arranged on two sides of the inner wall of the operating vehicle 6, the rollers are connected in the sliding grooves in the two sides of the main beam 1 in a rolling manner, and the electric hoist 7 is fixedly connected to one side of the operating vehicle 6;
the sliding beams 4 are arranged in pairs and symmetrically arranged at two ends of the operation vehicle 6, any one of the sliding beams 4 is obliquely arranged, the oblique direction of the sliding beam 4 is opposite to that of the closest diagonal bracing beam 3, one end of the sliding beam 4 is fixedly connected to the top end of the operation vehicle 6, the other end of the sliding beam 4 is slidably connected to the auxiliary beam 2, the sliding beam 4 comprises a beam body and a transverse extension part 42 arranged at the top end of the beam body 41, the transverse extension part 42 is erected on the auxiliary beam 2, rollers rolling along the auxiliary beam 2 are arranged at the bottom of the transverse extension part 42, and a hard nylon sleeve is embedded in the surface of each roller at the bottom of the transverse extension part 42;
a first brake device 8 is arranged between the running vehicle 6 and the main beam 1, a second brake device 9 is arranged between the sliding beam 4 and the secondary beam 2, the first brake device 8 comprises a first friction disc 81, a first spring 82 and a first push-pull electromagnet 83, the first push-pull electromagnet 83 is fixedly connected to the inside of the running vehicle 6, the first spring 82 is sleeved on the outer side of a movable sliding rod of the first push-pull electromagnet 83, the first friction disc 81 is fixedly connected to the top end of the movable sliding rod of the first push-pull electromagnet 83 and is positioned below the main beam 1, as shown in fig. 3, the second brake device 9 comprises a second friction disc 91, a second spring 92 and a second push-pull electromagnet 93, the second push-pull electromagnet 93 is fixedly connected to the top of the sliding beam 4, the spring is sleeved on the outer side of the movable sliding rod 93, and the second friction disc 91 is fixedly connected to the end of the movable sliding rod of the second push-pull electromagnet 93 and is positioned between the secondary beam 2 and the sliding beam 4;
still include the outer cover body, the outer cover body cover is located the girder 1 and the auxiliary girder 2 outside.
In summary, the invention provides the following beneficial effects: the auxiliary beam and the inclined supporting beam can enable part of force borne by the main beam to be transmitted to the end part of the main beam, so that directional torque is formed at two ends of the main beam, bending torque formed on the middle part of the main beam when a workpiece is hoisted is counteracted, and the bending resistance of the main beam is improved; because the bending resistance of the main beam is improved, and meanwhile, the main beam and the auxiliary beam can bear the stress together, the length of the main beam can be prolonged, so that the travel of the running vehicle is improved, and the integral bearing capacity of the electric crane can be improved. The first brake device and the second brake device can synchronously provide braking force for the running vehicle, so that the stability of the running vehicle during braking is improved, when any one brake device fails, the other brake device can keep the minimum braking requirement, and accidents caused by failure of the brake device in the process of hoisting a workpiece by the running vehicle can be avoided. When the running vehicle brakes, the first push-pull electromagnet is powered off, the movable slide rod jacks upwards, and the first spring rebounds and tightly presses the first friction disc on the main beam, so that braking is realized by using friction force. When the sliding beam brakes, the second push-pull electromagnet is powered off, the movable slide rod is ejected outwards, and the second spring rebounds and tightly presses the second friction disc on the secondary beam, so that braking is realized by using friction force. The hard nylon sleeve can prevent the roller of the secondary beam from slipping when rolling on the secondary beam. The inclination directions of the sliding beam and the closest diagonal bracing beam are opposite, so that a trapezoidal support structure can be formed among the sliding beam, the diagonal bracing beam, the main beam and the auxiliary beam, and the stability of the whole structure is improved. The outer cover body can play dirt-proof effect, avoids the dust process on girder and the auxiliary girder and influences the normal motion of operation car and sliding beam.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent modifications made by the present invention and the contents of the accompanying drawings, which are directly or indirectly applied to the related technical fields, are included in the scope of the present invention.
Claims (8)
1. An electric crane capable of preventing a main beam from deforming is characterized by comprising a main beam, a secondary beam, an inclined supporting beam, a sliding beam, an end beam, a running vehicle and an electric hoist;
the two ends of the main beam are respectively and fixedly connected with an end beam, the secondary beam is arranged above the main beam in parallel, the length of the secondary beam is smaller than that of the main beam, and the two ends of the secondary beam are respectively and fixedly connected with the two ends of the main beam through inclined supporting beams;
the section of the main beam is I-shaped, sliding grooves are formed in two sides of the main beam, the cross section of the running vehicle is in a concave shape, rolling wheels are arranged on two sides of the inner wall of the running vehicle, the rolling wheels are connected in the sliding grooves in the two sides of the main beam in a rolling mode, and the electric hoist is fixedly connected to one side of the running vehicle;
the sliding beams are arranged in pairs and symmetrically arranged at two ends of the operation vehicle, one end of each sliding beam is fixedly connected to the top end of the operation vehicle, and the other end of each sliding beam is connected to the auxiliary beam in a sliding mode.
2. The electric crane for preventing the main beam from deforming as claimed in claim 1, wherein a first braking device is arranged between the running vehicle and the main beam, and a second braking device is arranged between the sliding beam and the secondary beam.
3. The electric crane for preventing the main beam from deforming as claimed in claim 2, wherein the first braking device comprises a first friction disc, a first spring and a first push-pull electromagnet, the first push-pull electromagnet is fixedly connected to the inside of the traveling carriage, the first spring is sleeved on the outer side of the movable sliding rod of the first push-pull electromagnet, and the first friction disc is fixedly connected to the top end of the movable sliding rod of the first push-pull electromagnet and located below the main beam.
4. The electric crane for preventing the main beam from deforming as claimed in claim 2, wherein the second braking device comprises a second friction disc, a second spring and a second push-pull electromagnet, the second push-pull electromagnet is fixedly connected to the top of the sliding beam, the spring is sleeved outside the movable sliding rod of the second push-pull electromagnet, and the second friction disc is fixedly connected to the end of the movable sliding rod of the second push-pull electromagnet and is positioned between the secondary beam and the sliding beam.
5. The electric crane for preventing the deformation of the main beam as recited in claim 1, wherein the sliding beam comprises a beam body and a lateral extension part arranged at the top end of the beam body, the lateral extension part is erected on the secondary beam, and the bottom of the lateral extension part is provided with a roller which rolls along the secondary beam.
6. The electric crane for preventing the deformation of the main beam according to claim 5, wherein a hard nylon sleeve is embedded on the surface of the roller at the bottom of the transverse extension part.
7. The electric crane for preventing the main beam from deforming according to claim 1, wherein any one of the sliding beams is arranged obliquely and the inclination direction of the sliding beam is opposite to that of the nearest diagonal bracing beam.
8. The electric crane capable of preventing the main beam from deforming as claimed in claim 1, further comprising an outer cover body covering the outer sides of the main beam and the secondary beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110219717.5A CN113003436B (en) | 2021-02-26 | 2021-02-26 | Prevent electric hoist of girder deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110219717.5A CN113003436B (en) | 2021-02-26 | 2021-02-26 | Prevent electric hoist of girder deformation |
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| CN113003436A CN113003436A (en) | 2021-06-22 |
| CN113003436B true CN113003436B (en) | 2023-04-07 |
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| CN202110219717.5A Active CN113003436B (en) | 2021-02-26 | 2021-02-26 | Prevent electric hoist of girder deformation |
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| CN112227732A (en) * | 2020-10-22 | 2021-01-15 | 广东富生建设(集团)有限公司 | Travelling beam for steel structure factory building, construction method and installation method thereof |
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