CN215105639U - Multilayer composite floor frame - Google Patents

Abstract

The utility model belongs to the technical field of the engineering machine tool and specifically relates to a compound ground plate frame of multilayer, including ground plate frame mainboard, ground plate frame mainboard links firmly rather than the driver's cabin of top mutually the back welding of ground plate frame mainboard has rather than back shape assorted intensive sheet metal welding piece, intensive sheet metal welding piece has a plurality of sheet metal to constitute, intensive sheet metal welding piece with be provided with the interval cavity between the back of ground plate frame mainboard the interval cavity intussuseption is filled with the foamed cement. The local grillage can not only effectively obstruct the transmission of noise, but also absorb partial noise, thereby reducing the noise entering the cab, making the operation of the bulldozer more quiet, making the bulldozer operator more comfortable, and improving the driving comfort. In addition, the floor frame main board in the patent has simple shape, is horizontal and vertical, has good processing manufacturability and high universality, and can be popularized and applied to full-series products.

Description

Multilayer composite floor frame

Technical Field

The utility model relates to an engineering machine tool field, in particular to noise reduction and noise reduction floor frame of bulldozer, especially a compound floor frame of multilayer.

Background

The noise of the bulldozer mainly comes from the operation of the engine, the traveling system, and the drive train, and vibrations generated by structural members such as the main frame, the floor frame, and the cab. The cab of the bulldozer is fixed on the floor frame, and noise generated by a walking system, a transmission system and the like can be transmitted into the cab through a floor frame bottom plate and a coaming.

With the increasing demand of people on the comfort of engineering products, mechanical noise is one of the main influencing factors. The long-term high-decibel noise-free environment causes great harm to human bodies.

Meanwhile, with the progress of the technology of the bulldozer, the noise control level of the bulldozer becomes a key index for measuring the quality of the bulldozer, and a correct processing method is found to reduce noise pollution, which is a technical problem which is urgently needed to be solved at present.

The key of the sound insulation of the cab is the floor frame, but the current bulldozer floor frame is formed by splicing and welding a plurality of single-layer thin plates and cannot effectively separate the transmission of noise. The noise beside the ears of the driver is large, the driving fatigue of the driver is increased, the working state of the driver is influenced, and the body health of the driver is seriously or even damaged.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve one of the above-mentioned technical problem, the invention provides a multilayer composite floor frame, and this floor frame has the effect of noise reduction amortization of making an uproar, can obstruct the noise that absorbs especially from transmission system and get into the driver's cabin, effectively reduces the other noise of driver's ear, promotes to drive the travelling comfort, and the technical scheme who adopts is: the utility model provides a compound ground plate frame of multilayer, includes ground plate frame mainboard, ground plate frame mainboard links firmly rather than the driver's cabin of top mutually through the bolt the back welding of ground plate frame mainboard has rather than the intensive sheet metal welding piece of back shape assorted, it has a plurality of sheet metal to constitute to reinforce the sheet metal welding piece, reinforce the sheet metal welding piece with be provided with the interval cavity between the back of ground plate frame mainboard the intussuseption of interval cavity is filled with the foamed cement.

The floor frame main board is customized according to the requirements of different machine types.

And the reinforced thin plate welding piece is welded with the reinforcing ribs for increasing the strength of the thin plate and avoiding vibration noise caused by the vibration of the thin plate when the bulldozer works.

In any of the above aspects, preferably, a plurality of reinforcing ribs are welded and fixed to each of the thin plates of the reinforced thin plate weld assembly.

In any of the above aspects, the reinforcing thin plate welded member is preferably formed by bending a steel plate at one time.

In any of the above schemes, preferably, the strengthened thin plate welding part is formed by welding together steel plates, and a welding seam sealant is coated at each welding seam part of the welded strengthened thin plate welding part to improve air tightness.

In any of the above aspects, it is preferable that each of the sheets of the reinforced sheet welding member is provided with a process hole.

The size of each fabrication hole can be put into the joint of the gluing equipment, the fabrication holes on the thin plate are filled with foaming glue into the spacing cavity, and the foaming glue is internally provided with a plurality of tiny pores or a plurality of mutually communicated bubbles, so that the foaming material with certain ventilation performance can effectively prevent the noise of the transmission system from being transmitted into the cab.

In any of the above embodiments, preferably, the foam rubber is provided with a plurality of fine pores or a plurality of interconnected bubbles by pneumatic blowing.

In any of the above aspects, it is preferable that a sound absorbing material is bonded and fixed to an outer surface of each of the thin plates of the reinforcing thin plate weld member.

The sound-absorbing material is used for absorbing noise, so that the noise entering a cab is weakened, the noise beside the ears of a driver is reduced, and the driving comfort is improved.

The choice and arrangement of sound absorbing material may be specifically chosen according to the specific model.

The sound absorption material is a multilayer composite sound absorption material, and the main factors influencing the sound absorption property of the material are the air flow resistance, the void ratio, the material thickness, the material density and the like of the material.

The existing sound absorption materials are various in types, and the sound absorption materials are preferably selected according to the test result of the vibration noise of the whole bulldozer.

The arrangement of the sound absorption material on the bulldozer floor frame can also be changed according to specific requirements, the power of the bulldozer is different, the use environment is different, and the selection and the arrangement of the sound absorption material are also different.

In any of the above aspects, preferably, the thickness of the spacer cavity is 5 to 10 times the thickness of the sheet on the strengthened sheet weld.

In any of the above aspects, it is preferable that each of the reinforcing beads is welded to a side of the thin plate facing the space.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the local grillage can not only effectively obstruct the transmission of noise, but also absorb partial noise, thereby reducing the noise entering the cab, making the operation of the bulldozer more quiet, making the bulldozer operator more comfortable, and improving the driving comfort.

In addition, the floor frame main board in the patent has simple shape, is horizontal and vertical, has good processing manufacturability and high universality, and can be popularized and applied to full-series products.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or components are generally identified by like reference numerals. In the drawings, elements or components are not necessarily drawn to scale.

Fig. 1 is a schematic view of a three-dimensional structure of the floor frame of the present invention.

Fig. 2 is a schematic view of a side view of the floor frame according to the present invention.

Fig. 3 is an assembly schematic view of the cab and the floor frame of the present invention.

In the figure, 1, a welding piece of a reinforced thin plate; 101. a thin plate; 2. a cab; 3. a floor frame main board; 4. a fabrication hole; 5. reinforcing ribs; 6. foaming glue; 7. sound-absorbing sponge; 8. a floor frame.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1-3, a compound floor frame of multilayer, includes floor frame mainboard 3, floor frame mainboard 3 links firmly rather than driver's cabin 2 of top through the bolt the back welding of floor frame mainboard 3 has rather than the back shape assorted intensive sheet metal 101 welding 1, intensive sheet metal 101 welding 1 has a plurality of sheet metal 101 to constitute, intensive sheet metal 101 welding 1 with be provided with interval cavity 9 between the back of floor frame mainboard 3 interval cavity 9 intussuseption is filled with foamed cement 6.

The floor frame main board 3 is customized in shape and size according to the requirements of different machine types.

In any of the above embodiments, preferably, a plurality of reinforcing beads 5 are welded and fixed to each thin plate 101 of the reinforcing thin plate 101 weld members 1.

The reinforcing ribs 5 are welded to the welding members 1 of the reinforcing thin plate 101 to increase the strength of the thin plate 101 and prevent the thin plate 101 from shaking and generating vibration noise when the bulldozer is in operation.

In any of the above embodiments, the reinforcing thin plate 101 and welded member 1 is preferably formed by bending a steel plate at one time.

The integrity of the whole welding part 1 of the reinforced thin plate 101 can be ensured by one-time bending and forming, and the integral strength is relatively higher.

In any of the above schemes, it is preferable that the welding member 1 of the reinforced thin plate 101 is formed by welding together steel plates, and a weld seam sealant is coated at each weld seam portion of the welding member 1 of the welded reinforced thin plate 101 for improving air tightness.

The sealing glue is coated on the welding seam of the welding part 1 of the reinforced thin plate 101 formed by tailor welding, so that the air tightness can be better ensured, and the noise reduction effect is improved.

In any of the above embodiments, it is preferable that the process hole 4 is provided in each of the thin plates 101 of the reinforcing thin plate 101 welded member 1.

The sizes of the process holes 4 can be set into the joints of the glue injection equipment, the process holes 4 on the thin plate 101 are used for filling the foaming glue 6 into the spaced cavities, and the foaming glue 6 is internally provided with a plurality of tiny pores or a plurality of mutually communicated bubbles and is made of foaming materials with certain ventilation performance, so that the noise of the transmission system can be effectively prevented from being transmitted into the cab 2.

The arrangement of the plurality of process holes 4 can enable the mutually communicated spaced cavities to observe the gluing condition through the rest of the process holes 4 after gluing is performed on the plurality of process holes 4, so that the gluing effect can be conveniently controlled.

In any of the above schemes, preferably, the inside of the foam rubber 6 is provided with a plurality of tiny pores or a plurality of mutually communicated bubbles by pneumatic blowing, and when the foam rubber 6 is blown, the pneumatic blowing at different speeds can be realized according to requirements to control the amount of bubbles formed inside the foam rubber 6.

In any of the above embodiments, it is preferable that a sound absorbing material is bonded and fixed to the outer surface of each thin plate 101 of the reinforcing thin plate 101 weld members 1.

The sound-absorbing material is a sound-absorbing sponge 7, and the thickness of the sound-absorbing sponge 7 is 10-20 mm.

The sound-absorbing material is used for absorbing noise, so that the noise entering the cab 2 is weakened, the noise beside the ears of a driver is reduced, and the driving comfort is improved.

The choice and arrangement of sound absorbing material may be specifically chosen according to the specific model.

The sound absorption material is a multilayer composite sound absorption material, and the main factors influencing the sound absorption property of the material are the air flow resistance, the void ratio, the material thickness, the material density and the like of the material.

The existing sound absorption materials are various in types, and the sound absorption materials are preferably selected according to the test result of the vibration noise of the whole bulldozer.

The arrangement of the sound absorption material on the bulldozer floor frame can also be changed according to specific requirements, the power of the bulldozer is different, the use environment is different, and the selection and the arrangement of the sound absorption material are also different.

In any of the above aspects, the thickness of the spacing cavities is preferably 5 to 10 times the thickness of the sheet 101 on the reinforced sheet 101 weldment 1.

The arrangement of the spacing cavity with a proper size can ensure the effects of sound insulation, vibration reduction and noise reduction when the overall size is increased within a reasonable range.

In any of the above embodiments, it is preferable that each of the reinforcing beads 5 is welded to the side of the thin plate 101 facing the space.

Set up inside the interval cavity with strengthening rib 5, can guarantee the planar planarization of outside sheet metal 101, the sound sponge 7 is inhaled in the just bonding of being convenient for of outward appearance pleasing to the eye, reduces the operation degree of difficulty.

The local grillage can not only effectively obstruct the transmission of noise, but also absorb partial noise, thereby reducing the noise entering the cab 2, making the operation of the bulldozer more quiet, making the bulldozer operator more comfortable, and improving the driving comfort.

In addition, the floor frame main board 3 in the patent has simple shape, is horizontal and vertical, has good processing technology and high universality, and can be popularized and applied to full-series products.

Interpretation of related terms:

foaming glue: the adhesive has foaming property and bonding property, and is mainly used for filling, sealing and bonding the edges, the construction extension parts and the holes of the building doors and windows.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification; to those skilled in the art, any alternative improvements or changes made to the embodiments of the present invention are all within the scope of the present invention.

The parts of the present invention not described in detail are the known techniques of those skilled in the art.

Claims (9)

1. A multilayer composite floor frame is characterized in that: including the floor frame mainboard, the floor frame mainboard links firmly rather than the driver's cabin of top mutually through the bolt the back welding of floor frame mainboard has rather than the back shape assorted intensive sheet metal welding piece, intensive sheet metal welding piece has a plurality of sheet metal to constitute, intensive sheet metal welding piece with be provided with the interval cavity between the back of floor frame mainboard the interval cavity intussuseption is filled with the foamed cement.

2. A multi-layer composite floor frame as defined in claim 1, wherein: and a plurality of reinforcing ribs are welded and fixed on each thin plate of the reinforced thin plate welding piece.

3. A multi-layer composite floor frame as defined in claim 1, wherein: the reinforced thin plate welding piece is formed by bending a steel plate at one time.

4. A multi-layer composite floor frame as defined in claim 1, wherein: the strengthened thin plate welding piece is formed by welding steel plates in a split welding mode, and welding seam sealants are coated on all welding seam parts of the strengthened thin plate welding piece formed by the split welding mode to improve air tightness.

5. A multi-layer composite floor frame as defined in claim 1, wherein: and each thin plate of the strengthened thin plate welding part is provided with a fabrication hole.

6. A multi-layer composite floor frame as defined in claim 1, wherein: the inside pneumatic blowing of foaming glue is equipped with a plurality of tiny pore or a plurality of bubble of intercommunication each other.

7. A multi-layer composite floor frame as defined in claim 1, wherein: and sound absorbing materials are fixedly adhered to the outer side surfaces of the thin plates of the reinforced thin plate welding piece.

8. A multi-layer composite floor frame as defined in claim 1, wherein: the thickness of the spacing cavity is 5-10 times of the thickness of the thin plate on the strengthened thin plate welding piece.

9. A multi-layer composite floor frame as defined in claim 1, wherein: the reinforcing ribs are welded to the side of the sheet facing the space.

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