Use safer and more widely applicable bridge cranes
Through the design of I-shaped structure and extension beam, the problem of restricted lifting areas of bridge cranes is solved, which increases adaptability, and reduces shedding and noise through limiting wheels and boundless walking wheels, improving safety and use life.
Patent Information
- Application Number
- CN201910447862.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-05-28
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2039-05-28
AI Technical Summary
The lifting area of existing bridge cranes is limited by the support columns, which is inconvenient to use, and the walking frame is prone to fall off, which poses safety hazards and noise problems.
The I-shaped structure of longitudinal main beams and cross beams is adopted. Through the design of extension beams and walking frames, the lifting trolley can span the support columns, increase the lifting range, and reduce wear and shed risks through limit wheels and boundless walking wheels.
The lifting area has been expanded, the adaptability to the construction site has been enhanced, the walking rack shedding and noise pollution have been reduced, and the safety and service life have been improved.
Smart Images
Figure CN110255386B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of bridge cranes, and in particular to a bridge crane which is safer to use and has wider applicability. Background Art
[0002] Bridge cranes are lifting equipment that are horizontally mounted above workshops, warehouses and material yards to lift materials. The characteristic of bridge cranes is that they can lift and lower heavy objects hung on hooks or other lifting devices vertically or move them horizontally in space. Bridge cranes include: lifting mechanism, trolley and carriage running mechanism. Relying on the coordinated action of these mechanisms, heavy objects can be lifted and moved within a certain cubic space.
[0003] The crossbeams of most existing bridge cranes are supported by two left and right longitudinally extending main beams. The lifting trolley arranged on the crossbeam can only lift heavy objects within the extension range of the crossbeam. However, many existing factory buildings need to be equipped with multiple support columns to support the ceiling frame. Since the crossbeam cannot cross the support column when sliding along the main beam, the lifting range of most existing bridge cranes is a rectangular lifting area where the support column cannot appear. The heavy object lifting area of the lifting trolley is greatly affected by the conditions of the construction site, which is inconvenient to use.
[0004] In addition, the sliding movement of existing cranes is achieved by a traveling frame, on which a traveling wheel is fixedly mounted. The traveling wheel is a side traveling wheel structure with a raised step on the outer peripheral edge. The main wheel surface of the traveling wheel travels on the two edges of the top surface of the I-beam bottom plate, and the raised steps of the traveling wheel are close to the side walls of the bottom plate. The fixed distance limiting effect of the raised steps on both sides enables the traveling wheel to have a certain effect of preventing it from leaving the traveling track; however, the raised steps also impact the side walls of the I-beam bottom plate during operation, causing wear between the two, and the traveling wheel also makes a large noise when traveling. After a certain period of use, the two side edges of the bottom plate or the raised steps of the traveling wheel are worn, and the traveling frame is likely to fall off, posing a safety hazard; it is necessary to regularly inspect and replace the traveling wheels and I-beams, and the cost of use is high. Summary of the invention
[0005] The present invention provides a bridge crane which is safer to use and has wider applicability, so as to solve the problems existing in most existing bridge cranes, such as limited lifting area, great influence by construction site, and risk of falling off of the traveling frame.
[0006] The present invention adopts the following technical solution:
[0007] A bridge crane which is safer to use and has a wider range of applicability comprises a longitudinal main beam and a cross beam, both of which are composed of a bottom plate, a connecting wall plate and a top plate which are fixedly connected in sequence as a whole, and both of which have I-shaped cross sections; the longitudinal main beam is fixedly mounted on a supporting carrier, and the cross beam is provided with a longitudinal traveling frame, and the cross beam is slidably mounted below the longitudinal main beam through the longitudinal traveling frame.
[0008] The cross beam is provided with an extension beam, which is slidably mounted below the cross beam through a horizontal traveling frame, and the extension beam is provided with a lifting trolley for lifting heavy objects.
[0009] The above-mentioned longitudinal walking frame and the transverse walking frame both include a mounting frame and walking wheels, limiting wheels and a walking motor fixedly mounted on the mounting frame. The walking frame is directed to move along the length extension direction of the above-mentioned base plate by the walking wheels driven by the walking motor. The limiting wheels slide along the length extension direction of the above-mentioned connecting wall panels in rolling contact. The limiting wheels are used to limit the displacement of the mounting frame along the width direction of the base plate.
[0010] The installation frame is provided with at least two of the above-mentioned limiting wheels which are distributed oppositely, and the above-mentioned connecting wall plate is clamped between the two opposite limiting wheels.
[0011] The hoisting trolley comprises a hoisting traveling frame and a winch mounted on the hoisting traveling frame. The hoisting traveling frame is driven by a motor and mounted on the extension beam. A hoisting rope is wound on the reel of the winch. The inner end of the hoisting rope is fixed on the reel of the winch. The outer end of the hoisting rope is fixedly mounted on the hoisting traveling frame independently of the winch. The hook of the winch is hung between the inner end and the outer end of the hoisting rope through a pulley. There is a space between the winch and the outer end of the hoisting rope that does not interfere with the up and down movement of the hook. The height of the outer end of the hoisting rope is not lower than the height of the hoisting rope output by the winch.
[0012] The above-mentioned running wheel is a rimless running wheel, and the running wheels arranged parallel to the connecting wall panels are respectively provided on both sides of the above-mentioned connecting wall panels. The running wheel slides on the upper surface of the above-mentioned bottom plate or the above-mentioned top plate, and a side wall of the running wheel facing away from the connecting wall panel is arranged on the inner side of the sliding surface where the running wheel is located.
[0013] The above-mentioned extension beam includes an extension end and a load-bearing end, and the extension beam slides and extends toward the extension end; the above-mentioned horizontal walking frame is fixedly installed between the center of the extension beam and the load-bearing end, and the load-bearing end is fixedly installed with an anti-warping pulley, which rolls and slides along the bottom surface of the above-mentioned horizontal beam, and at least one of the horizontal walking frames is arranged between the anti-warping pulley and the extension end.
[0014] The extension beam is provided with two transverse traveling frames, and the anti-warping pulley is arranged between the two transverse traveling frames, or the anti-warping pulley is arranged between the two transverse traveling frames and the load-bearing end.
[0015] The mounting frame of the longitudinal walking frame is U-shaped, and the two side plates of the mounting frame extend upward from the two sides of the longitudinal main beam respectively. The walking wheels of the longitudinal walking frame are fixedly rotatably mounted on the side plates, and the walking wheels travel on the top surface of the top plate of the longitudinal main beam.
[0016] The longitudinal main beam is lifted off the ground only by a support carrier frame fixedly connected at both ends. A pull rod is installed between the two side plates of the mounting frame of the longitudinal walking frame, and the pull rod is used to adjust the distance between the top ends of the two side plates.
[0017] From the above description of the structure of the present invention, it can be seen that compared with the prior art, the present invention has the following advantages: the crane of the present invention can extend the walking and telescoping operation of the extension beam, so that it can cross the support columns of the construction site and expand the walking range of the lifting trolley in the extension direction of the beam, so that the lifting area is effectively increased, and the adaptability of the crane to the construction site is enhanced, and the crane has a wider adaptability; in addition, through the configuration of the limiting wheels on the walking frame, it has a limiting effect on the width direction of the walking frame on the beam, effectively reducing the displacement of the walking wheels in the width direction during walking, and then effectively reducing the probability of wear between the walking wheels and the side walls of the bottom plate, which not only effectively reduces the probability of the walking frame detaching, making the operation of the walking frame safer, but also effectively reduces the noise of the running of the walking frame and reduces noise pollution. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the front structural view of the crane in the first embodiment.
[0019] Figure 2 This is a schematic diagram of the top view of the structure of the crane in implementation mode 1.
[0020] Figure 3 This is a schematic diagram of the front structural view of the crane in the second implementation mode.
[0021] Figure 4 This is a schematic diagram of the top view of the crane in the second embodiment.
[0022] Figure 5 It is a schematic diagram of the main structure of a lifting trolley in the prior art. DETAILED DESCRIPTION
[0023] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.
[0024] Implementation Method 1
[0025] Reference Figure 1 , Figure 2A bridge crane with safer use and wider applicability comprises a longitudinal main beam 1 and a cross beam 2, wherein the longitudinal main beam 1 and the cross beam 2 are integrally formed by a bottom plate 11, a connecting wall plate 12 and a top plate 13 which are fixedly connected in sequence, and the cross sections of the longitudinal main beam 1 and the cross beam 2 are both I-shaped; the longitudinal main beam 1 is fixedly assembled on a supporting carrier (such as Figure 2 As shown, the supporting carrier is preferably a cement support column 14 standing on the ground, located on a metal frame 15 above the longitudinal main beam 1, and the crossbeam 2 is equipped with a longitudinal walking frame 3, and the crossbeam 2 is slidably assembled under the longitudinal main beam 1 through the longitudinal walking frame 3.
[0026] Continue to refer to Figure 1 , Figure 2 The above-mentioned cross beam 2 is equipped with an extension beam 4, which is slidably mounted under the cross beam 2 through a horizontal traveling frame 5, and the extension beam 4 is equipped with a lifting trolley 6 for lifting heavy objects. Figure 2 As shown, by extending the walking and telescopic operation of the extension beam 4, it is able to cross the support column 14 of the construction site and expand the walking range of the lifting trolley 6 in the extension direction of the beam 2, so that the lifting area is effectively increased, thereby enhancing the adaptability of the crane to the construction site, and the crane has a wider adaptability.
[0027] Continue to refer to Figure 1 , Figure 2 The longitudinal traveling frame 3 and the transverse traveling frame 5 each include a mounting frame 31 and a traveling wheel 32, a limiting wheel 33 and a traveling motor fixedly mounted on the mounting frame 31. The traveling frame (including the longitudinal traveling frame 3 and the transverse traveling frame 5) is directional moved along the length extension direction of the above-mentioned bottom plate 11 by the traveling wheel 32 driven by the traveling motor. The limiting wheel 33 slides along the length extension direction of the above-mentioned connecting wall plate 12 in rolling contact. The limiting wheel 33 is used to limit the displacement of the mounting frame 31 along the width direction of the bottom plate 11. Preferably, each of the above-mentioned mounting frames 31 is provided with four of the above-mentioned limiting wheels 33 distributed in opposition, and the above-mentioned connecting wall plate 12 is sandwiched between two opposing limiting wheels 33. By configuring the limiting wheels 33 on the walking frame, the walking frame has a limiting effect on the width direction of the beam on which it is located, effectively reducing the displacement of the walking wheels 32 in the width direction during walking, and thus effectively reducing the probability of wear between the walking wheels 32 and the side walls of the base plate 11, which not only effectively reduces the probability of the walking frame detaching, making the operation of the walking frame safer, but also effectively reduces the noise of the walking frame operation and reduces noise pollution.
[0028] Continue to refer to Figure 1 , Figure 2The hoisting trolley 6 comprises a hoisting traveling frame 61 and a winch 62 mounted on the hoisting traveling frame 61. The hoisting traveling frame 61 is driven by a motor and mounted on the extension beam 4. A hoisting rope 63 is wound on the reel of the winch 62. The inner end of the hoisting rope 63 is fixed on the reel of the winch 62. The outer end 631 of the hoisting rope 63 is fixedly mounted on the hoisting traveling frame 61 independently of the winch 62. The hook 64 of the winch 62 is hung between the inner end and the outer end of the hoisting rope 63 by sliding through a pulley. There is a space between the winch 62 and the outer end of the hoisting rope 63 that does not interfere with the up and down movement of the hook 64. The height of the outer end assembly position of the hoisting rope 63 is not lower than the height of the output 632 of the hoisting rope 63 from the winch 62. The lifting rope 63 of the lifting trolley 6 is arranged so that the hook 64 can go up to a greater height, thereby making the height dimension of the lifting traveling frame 61 smaller, so that it can enter a space with a smaller height dimension to realize the low-entry empty heavy object picking and placing operation, adapt to more site conditions, and have a wider applicability. Figure 5 As shown, the maximum rising position of the hook 64 of the lifting traveling frame of the existing common crane can only reach the bottom surface of the winch 62, so that the lifting range of the hook 64 is limited to a certain extent and its use is restricted; in addition, since the height of the hook 64 cannot be hidden or reduced, the overall thickness of the existing lifting traveling frame 61 is relatively large. For the lifting traveling frame assembled on the extension beam, the lateral travel space required for its lateral travel is relatively large, and its use is subject to certain limitations.
[0029] Continue to refer to Figure 1 , Figure 2 The above-mentioned running wheel 32 is a boundless running wheel 32. The running wheels 32 arranged parallel to the connecting wall panels 12 are respectively arranged on both sides of the above-mentioned connecting wall panels 12. The running wheels 32 slide on the upper surface of the above-mentioned bottom panel 11 or the above-mentioned top panel 13. The side wall of the running wheel 32 away from the connecting wall panel 12 is arranged on the inner side of the sliding surface where the running wheel 32 is located. The boundless structure of the boundless running wheel 32 allows the running position of the running wheel 32 to avoid the edge and be closer to the middle connecting wall panel 12, which can effectively avoid the wear of the running wheel 32 on the edge of the bottom panel 11 or the top panel 13, reduce noise, and extend the service life of the running wheel 32 and the beam where it is located, and can also effectively reduce the probability of the running wheel 32 falling off the running track, thereby improving the safety factor of operation.
[0030] Continue to refer to Figure 1 , Figure 2The extension beam 4 includes an extension end 41 and a load-bearing end 42, and the extension beam 4 slides and extends toward the extension end 41; the horizontal traveling frame 5 is fixedly assembled between the center of the extension beam 4 and the load-bearing end 42, and the load-bearing end 42 is fixedly assembled with an anti-warping pulley 43, which rolls and slides along the bottom surface of the cross beam 2, and at least one of the horizontal traveling frames 5 is arranged between the anti-warping pulley 43 and the extension end 41. Preferably, the extension beam 4 is equipped with two horizontal traveling frames 5, and the anti-warping pulley 43 is arranged between the two horizontal traveling frames 5, or the anti-warping pulley 43 is arranged between the two horizontal traveling frames 5 and the load-bearing end 42. The arrangement of the anti-warping pulley 43 can well prevent the load-bearing end 42 of the extension beam 4 from tilting upward, so that the extension beam 4 can better maintain a parallel state with the cross beam 2, so that the horizontal traveling frame 5 and the lifting trolley 6 can slide in the horizontal direction, and the lifting operation of the lifting trolley 6 at various positions on the extension beam 4 is more stable. In addition, if Figure 1 As shown, the longitudinal main beam 1, the cross beam 2 and the extension beam 4 are respectively fixed with limit blocks 16 at both ends of the corresponding walking tracks of the walking frames. The limit blocks 16 are used to block and limit the walking wheels 32 of each walking frame to prevent the walking wheels 32 from leaving the walking tracks.
[0031] Implementation Method 2
[0032] Reference Figure 3 , Figure 4 The mounting frame 31 of the longitudinal traveling frame 3 is in a U shape, and the two side plates 311 of the mounting frame 31 extend upward from the two sides of the longitudinal main beam 1 respectively. The running wheels 32 of the longitudinal traveling frame 3 are fixedly mounted on the side plates 311, and the running wheels 32 run on the top surface of the top plate 13 of the longitudinal main beam 1. The longitudinal traveling frame 3 slides on the top of the longitudinal main beam 1, so that the load of the longitudinal traveling frame 3 is borne by the longitudinal main beam 1 as a whole (refer to Figure 1 When the walking wheel 32 walks on the bottom of the longitudinal main beam 1, the bottom plate 11 bears the load and exerts a downward pulling force on the connecting wall plate 12, and the connecting wall plate 12 also exerts a downward pulling force on the top plate 13, which requires a higher connection area and connection strength between the upper and lower side edges of the connecting wall plate 12 and the top plate 13 and the bottom plate 11). Since the top surface of the top plate 13 of the longitudinal main beam 1 has sufficient bearing space, a walking wheel 32 with a larger wheel surface width can be configured, and since the bottom plate 11 of the longitudinal main beam 1 does not need to be configured with a walking space for the walking wheel 32, for this reason, the connecting wall plate 12 connecting the top plate 13 and the bottom plate 11 can be increased in thickness or increase the number of the wall plate (such as setting two connecting wall plates 12) and change its setting position (such as the connecting wall plate 12 can be set at the outer position in the width direction of the bottom plate 11) and other means to strengthen the structural strength of the longitudinal main beam 1, enhance the load capacity of the longitudinal main beam 1 and extend its service life; or, under the same load capacity requirement, the overall size of the longitudinal main beam 1 can be reduced.
[0033] Reference Figure 4 The longitudinal main beam 1 is lifted off the ground only by the support carrier frame fixedly connected at both ends, and a tie rod 312 is installed between the two side plates 311 of the installation frame 31 of the longitudinal traveling frame 3, and the tie rod 312 is used to adjust the distance between the top ends of the two side plates 311. The configuration of the tie rod 312 can cause the two side plates 311 of the installation frame 31 to gather toward the middle, thereby adjusting the distance between the traveling wheels 32 on the two side plates 311, and making the installation frame 31 form a closed loop structure, enclosing the I-beam in which it is located, so that the installation frame 31 is not easy to fall off from the longitudinal main beam 1, which can effectively improve the safety of the operation of the longitudinal traveling frame 3.
[0034] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.
Claims
1. A bridge crane with safer use and wider applicability, comprising a longitudinal main beam and a cross beam, both of which are composed of a bottom plate, a connecting wall plate and a top plate fixedly connected in sequence as a whole, and the cross sections of the longitudinal main beam and the cross beam are both I-shaped; the longitudinal main beam is fixedly assembled on a supporting carrier, and the cross beam is equipped with a longitudinal traveling frame, and the cross beam is slidably assembled under the longitudinal main beam through the longitudinal traveling frame; characterized in that: The crossbeam is equipped with an extension beam, which is slidably mounted below the crossbeam through a horizontal traveling frame, and the extension beam is equipped with a lifting trolley for lifting heavy objects; The longitudinal walking frame and the transverse walking frame each include a mounting frame and a walking wheel, a limiting wheel and a walking motor fixedly mounted on the mounting frame. The walking frame is directed to move along the length extension direction of the base plate by the walking wheel driven by the walking motor. The limiting wheel slides along the length extension direction of the connecting wall plate in a rolling contact manner. The limiting wheel is used to limit the displacement of the mounting frame along the width direction of the base plate. The lifting trolley comprises a lifting traveling frame and a winch mounted on the lifting traveling frame, the lifting traveling frame is driven by a motor and is mounted on the extension beam; a lifting rope is wound on the reel of the winch, the inner end of the lifting rope is fixed on the reel of the winch, the outer end of the lifting rope is fixedly mounted on the lifting traveling frame independently of the winch, the hook of the winch is slidably hung between the inner end and the outer end of the lifting rope through a pulley, and there is a space between the winch and the outer end of the lifting rope that does not interfere with the upward and downward movement of the hook; The mounting frame of the longitudinal traveling frame is U-shaped, and the two side plates of the mounting frame extend upward from the two sides of the longitudinal main beam respectively, and the traveling wheels of the longitudinal traveling frame are fixedly rotatably mounted on the side plates, and the traveling wheels travel on the top surface of the top plate of the longitudinal main beam; The longitudinal main beam is lifted off the ground only by a supporting carrier frame fixedly connected at both ends, and a pull rod is installed between the two side plates of the mounting frame of the longitudinal walking frame, and the pull rod is used to adjust the distance between the top ends of the two side plates.
2. A bridge crane with safer use and wider applicability as claimed in claim 1, characterized in that: The installation frame is provided with at least two oppositely distributed limiting wheels, and the connecting wall plate is sandwiched between the two opposite limiting wheels.
3. A bridge crane with safer use and wider applicability as claimed in claim 1, characterized in that: The height of the outer end assembly position of the lifting rope is not lower than the height of the lifting rope output from the winch.
4. A bridge crane with safer use and wider applicability as claimed in claim 1, characterized in that: The running wheel is a rimless running wheel, and the running wheels arranged parallel to the connecting wall panels are respectively provided on both sides of the connecting wall panels. The running wheel slides on the upper surface of the bottom plate or the top plate, and a side wall of the running wheel facing away from the connecting wall panel is arranged on the inner side of the sliding surface where the running wheel is located.
5. The bridge crane with safer use and wider applicability as claimed in claim 1, characterized in that: The extension beam includes an extension end and a load-bearing end, and the extension beam slides and extends toward the extension end; the horizontal walking frame is fixedly installed between the center of the extension beam and the load-bearing end, and the load-bearing end is fixedly installed with an anti-warping pulley, which rolls and slides along the bottom surface of the horizontal beam, and at least one horizontal walking frame is arranged between the anti-warping pulley and the extension end.
6. A bridge crane with safer use and wider applicability as claimed in claim 5, characterized in that: The extension beam is equipped with two transverse traveling frames, and the anti-warping pulley is arranged between the two transverse traveling frames, or the anti-warping pulley is arranged between the two transverse traveling frames and the load-bearing end.
Citation Information
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