CN221093464U - Crane girder - Google Patents
Crane girder Download PDFInfo
- Publication number
- CN221093464U CN221093464U CN202322915122.0U CN202322915122U CN221093464U CN 221093464 U CN221093464 U CN 221093464U CN 202322915122 U CN202322915122 U CN 202322915122U CN 221093464 U CN221093464 U CN 221093464U
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- China
- Prior art keywords
- girder
- girder body
- noise reduction
- crane
- reduction layer
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- 230000009467 reduction Effects 0.000 claims abstract description 38
- 238000013016 damping Methods 0.000 claims description 38
- 229920001971 elastomer Polymers 0.000 claims description 31
- 229920005549 butyl rubber Polymers 0.000 claims description 7
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 5
- 239000011118 polyvinyl acetate Substances 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 4
- 229920000459 Nitrile rubber Polymers 0.000 claims description 4
- 230000000452 restraining effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000009477 glass transition Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Vibration Dampers (AREA)
Abstract
The utility model provides a crane girder, comprising: a girder body; the trolley rails are respectively connected to two sides of the girder body; the noise reduction layer is arranged on the girder body close to the trolley track. According to the crane girder provided by the embodiment of the utility model, the structural vibration energy can be absorbed, and the noise is effectively reduced.
Description
Technical Field
The utility model relates to the technical field of cranes, in particular to a crane girder.
Background
The working mechanism of the conventional crane comprises a lifting mechanism and a trolley running mechanism, wherein the lifting mechanism is arranged in a machine room to lift and descend cargoes, the trolley running mechanism is arranged in the machine room (a traction trolley) or on a trolley frame (a self-propelled trolley), and the trolley is driven to run along trolley rails of front and rear girders of the crane so as to carry out cargo loading and unloading operation. During operation, noise is inevitably generated due to the operation of the lifting mechanism and the trolley mechanism and the operation of the trolley wheels on the steel rail. The trolley is arranged on the tracks of the front girder and the rear girder through wheels, and in the running process of the wheels, the noise source is produced outdoors due to the influences of rotation of the wheels, uneven stress of the wheels and the tracks, precision of pile arrangement of the tracks and the like, and the noise source is rapidly diffused to the periphery through steel structures such as the girders and the like, so that great noise pollution can be generated to the surrounding environment.
Disclosure of utility model
In view of the above, the utility model provides a crane girder capable of absorbing structural vibration energy and effectively reducing noise.
In order to solve the technical problems, the utility model adopts the following technical scheme:
according to an embodiment of the utility model, a crane girder comprises:
a girder body;
the trolley rails are respectively connected to two sides of the girder body;
The noise reduction layer is arranged on the girder body close to the trolley track.
Further, the cross section of the girder body is trapezoid and hollow, and a pair of trolley tracks are respectively connected to the outer side surfaces of two side plates of the trapezoid girder body.
Further, the trolley track is connected to the bottom of the side plate of the girder body through a rail bearing beam.
Further, the noise reduction layer is arranged on the inner side surface and/or the outer side surface of the side plate of the girder body.
Further, the noise reduction layer is arranged on the inner side surface and/or the outer side surface of the side plate of the girder body and the inner side surface and/or the outer side surface of the bottom plate of the girder body.
Further, the noise reduction layer includes damping rubber.
Further, the noise reduction layer further comprises a constraint plate, one side surface of the damping rubber is attached to the girder body, and the other side surface of the damping rubber is attached to the constraint plate.
Further, the damping rubber comprises one of acrylate rubber, polyurethane, butyl rubber, nitrile rubber or polyvinyl acetate.
Further, the thickness of the damping rubber is 1.5-2 mm.
Further, the thickness of the restraint plate is 0.6-1 mm.
The technical scheme of the utility model has at least one of the following beneficial effects:
According to an embodiment of the utility model, a crane girder comprises: the girder body, a pair of dolly track and layer of making an uproar falls, wherein, a pair of dolly track is connected respectively in the both sides of girder body, and the layer of making an uproar falls sets up on being close to the orbital girder body of dolly, from this, when the dolly operation arouses structural vibration on the dolly track, the layer of making an uproar falls on the girder body of being close to the dolly track can absorb vibration energy, buffering vibration, from the production of effective noise reduction.
Drawings
FIG. 1 is a schematic view of a crane girder according to an embodiment of the present utility model;
FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1;
Fig. 3 is a schematic structural diagram of a noise reduction layer of a crane girder according to an embodiment of the present utility model.
Reference numerals: 100. a girder body; 110. a side plate; 120. a bottom plate; 130. a diaphragm; 200. a trolley track; 210. a rail bearing beam; 211. a beam is arranged; 212. a support beam; 300. a noise reduction layer; 310. damping rubber; 320. and a constraint plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the utility model, fall within the scope of protection of the utility model.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate a relative positional relationship, which changes accordingly when the absolute position of the object to be described changes.
A crane girder according to an embodiment of the present utility model will be described in detail with reference to the accompanying drawings.
The crane girder according to the embodiment of the utility model, as shown in fig. 1 and 2, may include: the girder body 100, a pair of trolley rails 200, and a noise reduction layer 300.
Wherein, a pair of trolley rails 200 are respectively connected to both sides of the girder body 100.
Noise reduction layer 300 is disposed on girder body 100 adjacent to trolley track 200.
That is, by providing the noise reduction layer 300 on the girder body 100 near the cart rail 200, when the cart is operated on the cart rail 200 to cause structural vibration, vibration energy can be absorbed, vibration is buffered, and noise is effectively reduced.
In some embodiments, as shown in fig. 2, the girder body 100 has a trapezoidal shape in cross section and is hollow in the inside thereof, and a pair of trolley rails 200 are respectively connected to the outer sides of both side plates 110 of the trapezoidal girder body 100.
Specifically, the plurality of diaphragm plates 130 are arranged inside the hollow girder body 100, so that the girder body 100 is divided into a plurality of sections, and when the trolley rail 200 is connected to two sides of the girder body 100, the strength of the side plates 110 of the girder body 100 can be improved, the girder body is prevented from being deformed under stress in the long-time operation process of the trolley rail 200, and the durability of the structure is improved.
In some embodiments, as shown in fig. 2, the trolley track 200 is connected to the bottom of the side panels 110 of the girder body 100 by rail beams 210.
Specifically, the rail bearing beam 210 includes a mounting beam 211 and a supporting beam 212, the mounting beam 211 is horizontally arranged, one end of the mounting beam 211 is connected with the side plate 110 of the girder body 100, the trolley rail 200 is mounted on the mounting beam 211, one end of the supporting beam 212 is connected with the bottom of the side plate 110, and the other end is connected with the bottom surface of the mounting beam 211, so that the support for the mounting beam 211 is fixed, and the trolley rail 200 is stably and reliably mounted on the girder body 100 and is not easy to loosen.
In some embodiments, as shown in fig. 2, the noise reduction layer 300 is provided on the inner and/or outer sides of the side plates 110 of the girder body 100.
That is, the noise reduction layer 300 is attached to the side plate 110 of the girder body 100 to absorb vibration energy generated from the cart rail 200 mounted on the side plate 110, thereby reducing noise. The noise reduction layer 300 may be applied to one side of the side plate 110 or may be provided on both the inner and outer sides.
In some embodiments, as shown in fig. 2, the noise reduction layer 300 is provided on the inner and/or outer sides of the side plates 110 of the girder body 100 and the inner and/or outer sides of the bottom plate 120 of the girder body 100.
That is, in order to further enhance the noise reduction effect on the girder body 100, the noise reduction layer 300 may be attached to the bottom plate 120 of the girder body 100 near the trolley rail 200, while the noise reduction layer 300 is attached to the side plate 110. Also, the noise reduction layer 300 may be applied to one side of the side plate 110 and the bottom plate 120, or both the inside and outside.
In some embodiments, the noise reduction layer 300 includes damping rubber.
That is, the noise reduction layer 300 made of damping rubber is attached to the girder body 100, and when the structure vibrates, the viscous internal friction between the rubber molecular chains can consume part of vibration energy, thereby reducing vibration and achieving noise reduction effect.
In some embodiments, as shown in fig. 3, the noise reduction layer 300 further includes a constraint plate 320, and the damping rubber 310 is attached to the girder body 100 at one side and the constraint plate 320 at the other side.
That is, the noise reduction layer 300 composed of the damping rubber 310 and the constraint plate 320 is provided, wherein one side surface of the damping rubber 310 is attached to the girder body 100, and the other side surface is attached to the constraint plate 320, so that when the damping rubber 310 absorbs vibration, the outer side surface of the damping rubber is constrained, the shearing force acting on the damping rubber 310 is larger, the resistance generated by the internal viscosity of the damping is larger, more vibration energy can be absorbed, and the noise reduction effect is improved.
Preferably, the damping rubber comprises one of acrylate rubber, polyurethane, butyl rubber, nitrile rubber or polyvinyl acetate.
Specifically, the acrylate rubber damping material has excellent damping performance near room temperature, good adhesive performance and mechanical property, heat resistance, ageing resistance and the like. The polyurethane material has a large number of hydrogen bonds, shows a certain microscopic phase separation structure, has higher tan delta, is a damping material suitable for noise elimination and vibration reduction places, but the glass transition temperature of the polyurethane damping material with single component is single, and the damping temperature range is narrow. The glass transition temperature of butyl rubber is-70 ℃, the loss peak can be continued from-70 ℃ to 20 ℃, the butyl rubber is a damping material with quite wide effective functional area, and the vulcanized butyl rubber has low air permeability, high shock absorption, good heat resistance, ozone resistance and chemical resistance, but the glass transition temperature of butyl rubber is too low, which determines that the high-temperature damping performance is not good. The nitrile rubber has good oil resistance, can be widely applied to occasions with heavy oil stains, and improves the oil resistance of damping rubber materials. The polyvinyl acetate has the characteristics of moderate glass transition temperature, high tan delta and the like, is an ideal component for preparing the damping material with high damping performance, but the single-component polyvinyl acetate material only has a single damping peak and cannot meet the damping requirements of different temperature ranges. Therefore, the noise reduction layer can be prepared by selecting a proper damping rubber material according to specific working conditions.
Preferably, the damping rubber 310 has a thickness of 1.5 to 2mm. The damping rubber 310 with the thickness range is arranged, so that the use cost of the damping rubber 310 is saved to the greatest extent on the premise of ensuring good noise reduction effect.
Preferably, the thickness of the constraint plate 320 is 0.6 to 1mm. The constraint plate 320 of this thickness range is provided so that the use cost of the constraint plate 320 is maximally saved in the case of achieving a good constraint on the damping rubber 310.
Thus, the damping rubber 310 and the constraint plate 320 having the above thickness ratio are provided, so that a good noise reduction effect can be achieved when the noise reduction layer 300 having a wide range is laid on the girder body 100.
It should be noted that, the noise reduction layer 300 may be directly mounted on the surface of the structure by using self-adhesive glue, or may be connected by using a fastener such as a bolt. The noise reduction layer 300 according to the embodiment of the utility model has small thickness and light weight, and can be installed in a piece-by-piece manner according to the condition of the partition plate in the actual girder body 100, thereby achieving the effects of environmental protection, energy saving and noise reduction.
While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the present utility model.
Claims (10)
1. A crane girder, comprising:
a girder body;
the trolley rails are respectively connected to two sides of the girder body;
The noise reduction layer is arranged on the girder body close to the trolley track.
2. The crane girder according to claim 1, wherein the girder body has a ladder-shaped cross section and is hollow in the inside thereof, and a pair of the trolley rails are respectively connected to outer sides of both side plates of the ladder-shaped girder body.
3. The crane girder according to claim 2, wherein the trolley track is connected to the bottom of the side panels of the girder body by a rail bearing beam.
4. A crane girder according to claim 3, wherein the noise reduction layer is provided on the inner and/or outer side of the side plates of the girder body.
5. A crane girder according to claim 3, wherein the noise reduction layer is provided on the inner and/or outer side of the side plates of the girder body and the inner and/or outer side of the bottom plate of the girder body.
6. Crane girder according to claim 4 or 5, wherein the noise reducing layer comprises damping rubber.
7. The crane girder according to claim 6, wherein the noise reduction layer further comprises a constraint plate, one side of the damping rubber is attached to the girder body, and the other side is attached to the constraint plate.
8. The crane girder of claim 7, wherein the damping rubber comprises one of acrylate rubber, polyurethane, butyl rubber, nitrile rubber, or polyvinyl acetate.
9. The crane girder according to claim 8, wherein the damping rubber has a thickness of 1.5-2 mm.
10. Crane girder according to claim 7, characterized in that the thickness of the restraining plates is 0.6-1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322915122.0U CN221093464U (en) | 2023-10-30 | 2023-10-30 | Crane girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322915122.0U CN221093464U (en) | 2023-10-30 | 2023-10-30 | Crane girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221093464U true CN221093464U (en) | 2024-06-07 |
Family
ID=91302099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322915122.0U Active CN221093464U (en) | 2023-10-30 | 2023-10-30 | Crane girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221093464U (en) |
-
2023
- 2023-10-30 CN CN202322915122.0U patent/CN221093464U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |