CN111851619A

CN111851619A - Bulldozer

Info

Publication number: CN111851619A
Application number: CN202010634688.4A
Authority: CN
Inventors: 马正平; 张西奇; 孙水莲; 杨超; 谷雪梅
Original assignee: Zoomlion Heavy Industry Science and Technology Co Ltd; Zoomlion Heavy Industry Science and Technology Co Ltd Weinan Branch
Current assignee: Zoomlion Heavy Industry Science and Technology Co Ltd; Zoomlion Heavy Industry Science and Technology Co Ltd Weinan Branch
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2020-10-30

Abstract

The invention relates to the field of engineering machinery and discloses a bulldozer, which comprises a frame (3), and a cabin (1), a portal frame (2) and a cab (4) which are arranged on the frame (3) in the front-back direction, wherein the portal frame (2) and the cab (4) are separated from each other and are not directly connected. Through above-mentioned technical scheme, portal frame and driver's cabin are separated each other and do not connect with each other, can avoid vibration and the noise that the cabin produced to transmit the driver's cabin more directly through the portal frame in, can reduce the vibration and the noise of driver's cabin, promote operating personnel's operation experience.

Description

Bulldozer

Technical Field

The invention relates to engineering machinery, in particular to a bulldozer.

Background

A bulldozer is an earthwork machine that can excavate, transport, and discard rock and soil, and for example, can be used for construction of a dump, leveling of an automobile dump, stacking of dispersed ore, leveling of a work plate, a construction site, and the like, and can be used not only for assisting work but also for mining work.

Noise sources of the bulldozer comprise the running of an engine, a track ground system and a transmission system, vibration generated by structural members such as a floor frame and a cab and the like, and the noise in the cab of the bulldozer is higher due to various reasons.

Disclosure of Invention

The invention aims to provide a bulldozer, which solves the problem of excessive noise in a cab.

In order to achieve the above object, an aspect of the present invention provides a bulldozer, wherein the bulldozer comprises a frame, and a nacelle, a gantry, and a cab that are arranged on the frame in a front-rear direction, the gantry and the cab being spaced apart from each other and not directly connected.

Optionally, the distance between the gantry and the cab is 25mm-35 mm.

Optionally, a sealing plate is arranged at a position of the cab facing the portal frame, and a sound insulation layer is arranged on the sealing plate.

Optionally, the bulldozer comprises a floor frame disposed on the frame, and the cab is disposed on the floor frame.

Optionally, the cab includes a frame beam disposed at the bottom thereof and connected to the floor frame, a groove extending along a length direction of the frame beam is disposed on a surface of the frame beam facing the floor frame, and a sealing strip attached to the floor frame is disposed in the groove.

Optionally, the floor frame comprises a first horizontal plate at the front, a second horizontal plate at the rear, a vertical plate connected between the first horizontal plate and the second horizontal plate, and a seat frame connected to the lower surface of the second horizontal plate and the rear side surface of the vertical plate.

Optionally, the lateral sides of the seat frame at two lateral sides are provided with a reinforcing structure connected with the second horizontal plate, and the lower surface of the first horizontal plate is provided with a reinforcing beam.

Optionally, the lateral surfaces of the two lateral sides of the seat frame are respectively provided with a reinforcing rib and a reinforcing box.

Optionally, the rear side surface, the lateral side surfaces and the bottom surface of the seat frame are provided with sound insulation layers.

Optionally, sound insulation layers are arranged on the parts, located on two sides of the seat frame, of the lower surface of the second horizontal plate, and sound insulation layers are arranged on the parts, located on two sides of the seat frame, of the vertical plate.

Through above-mentioned technical scheme, portal frame and driver's cabin are separated each other and do not connect with each other, can avoid vibration and the noise that the cabin produced to transmit the driver's cabin more directly through the portal frame in, can reduce the vibration and the noise of driver's cabin, promote operating personnel's operation experience.

Drawings

FIG. 1 is a schematic view of a bulldozer according to an embodiment of the present invention;

FIG. 2 is a schematic view of a cab according to an embodiment of the invention;

fig. 3 is a schematic view showing a connection structure of a frame beam and a floor frame according to an embodiment of the present invention;

FIG. 4 is a perspective view of a floor frame according to an embodiment of the present invention;

fig. 5 is a bitmap of another angle of a floor frame according to an embodiment of the present invention.

Description of the reference numerals

1-cabin, 2-portal frame, 3-frame, 4-cab, 5-floor frame, 6-sealing plate, 7-frame beam, 8-sealing strip, 9-first horizontal plate, 10-second horizontal plate, 11-vertical plate, 12-seat frame, 13-reinforcing beam, 14-reinforcing rib and 15-reinforcing box.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

The invention provides a bulldozer, which comprises a frame 3, and a cabin 1, a portal frame 2 and a cab 4 which are arranged on the frame 3 in the front-back direction, wherein the portal frame 2 and the cab 4 are spaced from each other and are not directly connected.

Referring to fig. 1, the bulldozer comprises a frame 3, a cabin 1, a portal frame 2 and a cab 4 which are arranged from front to back are arranged on the frame 3, and an engine is arranged in the cabin 1, so that the power can be provided for the whole bulldozer, and the engine is also one of noise sources.

The gantry 2 and the nacelle 1 are connected to each other, providing support for the nacelle 1, and both the nacelle 1 and the gantry 2 may be connected to a frame 3. The portal frame 2 and the cab 4 are kept at a distance from each other and are not directly connected to avoid or relieve the vibration and noise from the cabin 1 from being directly transmitted into the cab 4 through the portal frame 2, so that the vibration and noise in the cab 4 are reduced, and the operation experience of a driver is improved.

Optionally, the distance between the gantry 2 and the cab 4 is 25mm-35 mm. As the distance between the gantry 2 and the cab 4 increases, the sound wave transmitted from the gantry 2 to the cab 4 decreases, and of course, the overall size of the bulldozer must be considered, and the distance between the gantry 2 and the cab 4 cannot be increased without restriction.

Further, a sealing plate 6 is provided at a position of the cab 4 facing the gantry 2, and a sound insulating layer is provided on the sealing plate 6. The cab 4 is provided with an instrument box and the like toward the front of the gantry 2, and in the prior art, the instrument box needs to be connected to the gantry 2, so that the front of the cab 4 is provided with an opening to allow the instrument box to pass through the cab 4 and be connected to the gantry 2, and in the present embodiment, as shown in fig. 2, the opening is sealed by a sealing plate 6, and a soundproof layer is provided on the outer side surface of the sealing plate 6, and accordingly, the instrument box is not connected to the gantry 2 any more, so that the vibration and noise of the nacelle 1 can be prevented or reduced from being transmitted into the cab 4.

Further, the bulldozer includes a floor frame 5 provided on the frame 3, and the cab 4 is provided on the floor frame 5. As shown in fig. 2, the structure of the cab 4 is complicated, and particularly, the bottom thereof is not a flat structure, and the floor frame 5 serves as an intermediate structure for supporting the cab 4, so that the cab 4 can be stably fixed to the vehicle frame 3.

In addition, the cab 4 comprises a frame beam 7 which is arranged at the bottom of the cab and connected with the floor frame 5, a groove which extends along the length direction of the frame beam 7 is arranged on the surface of the floor frame 5, which faces the frame beam 7, and a sealing strip 8 which is attached to the floor frame 5 is arranged in the groove. As shown in fig. 3, the frame beam 7 is connected to the bottom of the cab 4, and the frame beam 7 is connected to the lower floor frame 5, wherein a groove for accommodating a sealing strip 8 is provided on the surface of the frame beam 7 facing the floor frame 5, and the sealing strip 8 may be of an elastic structure, so as to achieve the buffer between the frame beam 7 and the floor frame 5. The frame beam 7 may be made of pipe, have a hollow structure, and may be detachably connected to the floor frame 5 by bolt members, and the frame beam 7 may be integrally enclosed into a frame structure to be disposed at the bottom of the cab 4 as a transition structure between the cab 4 and the floor frame 5.

Specifically, the floor frame 5 includes a first horizontal plate 9 at the front, a second horizontal plate 10 at the rear, a vertical plate 11 connected between the first horizontal plate 9 and the second horizontal plate 10, and a seat frame 12 connected to the lower surface of the second horizontal plate 10 and the rear side surface of the vertical plate 11. As shown in fig. 4 and 5, the floor frame 5 includes a first horizontal plate 9 and a second horizontal plate 10, the first horizontal plate 9 approximately corresponding to a floor position in front of the cab 4, the second horizontal plate 10 approximately corresponding to a seat position in rear of the cab 4, the second horizontal plate 10 having a height higher than that of the first horizontal plate 9, and the two are connected by a vertical plate 11. The lower side of the second horizontal plate 10 is connected to a seat frame 12, and the lower portion of the seat frame 12 can be connected to the frame 3 to stably support the entire floor frame 5. In addition, a seat frame 12 is located at the middle of the second horizontal plate 10 and is connected to the vertical plate 11, and both sides thereof correspond to the console boxes at both sides of the seat.

In addition, the seat frame 12 is provided with a reinforcing structure connected with the second horizontal plate 10 on two lateral sides, and the lower surface of the first horizontal plate 9 is provided with a reinforcing beam 13. The reinforcing structure on both sides of the seat frame 12 can improve the strength of the seat frame 12, and prevent or attenuate the vibration of the seat frame 12, thereby eliminating or attenuating the vibration and noise transmitted to the cab 4 through the vehicle frame 3.

Specifically, the seat frame 12 is provided with a reinforcing rib 14 and a reinforcing box 15 on the lateral sides thereof. As shown in fig. 4, the reinforcing rib 14 is a generally sheet-like structure, and is connected to the seat frame 12 and the second horizontal plate 10, so that the connection strength between the second horizontal plate 10 and the seat frame 12 is improved; similarly, referring to fig. 5, the reinforcement box 15 is also connected to the seat frame 12 and the second horizontal plate 10, and also can reinforce the connection strength between the seat frame 12 and the second horizontal plate 10. The reinforcing ribs 14 and the reinforcing box 15 improve the stability between the second horizontal plate 10 and the seat frame 12, and prevent the second horizontal plate 10 from transmitting vibration. In addition, a reinforcing beam 13 is also provided at the bottom of the first horizontal plate 9 corresponding to the floor position of the cab 4 to increase the strength of the first horizontal plate 9, prevent or reduce the occurrence of vibration, and prevent the transmission of vibration and noise to the cab 4.

Alternatively, the rear side surface, both lateral side surfaces, and the bottom surface of the seat frame 12 are provided with sound insulation layers. As shown in fig. 4 and 5, the seat frame 12 is substantially box-shaped, and has sound insulation layers attached to both side surfaces, the rear side surface, and the bottom surface thereof to absorb noise and vibration transmitted from other components and reduce transmission of vibration and noise to the cab 4.

In addition, sound insulation layers are provided on portions of the lower surface of the second horizontal plate 10 located on both sides of the seat frame 12, and sound insulation layers are provided on portions of the vertical plate 11 located on both sides of the seat frame 12. The second horizontal plate 10 and the vertical plate 11 are also provided with a soundproof layer at a portion not connected to the seat frame 12, and can also absorb vibration and noise and prevent the vibration noise from being transmitted to the upper cab 4.

The sound insulation layer can be a sheet-shaped foam structure, a sound absorption sponge layer and the like.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the specific features in any suitable way, and the invention will not be further described in relation to the various possible combinations in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.

Claims

1. A bulldozer, characterized in that it comprises a frame (3), and a nacelle (1), a gantry (2) and a cab (4) arranged on said frame (3) in a front-rear direction, said gantry (2) and said cab (4) being spaced apart from each other and not directly connected.

2. Bulldozer according to claim 1, characterised in that said gantry (2) and said cab (4) are spaced apart by 25-35 mm.

3. Bulldozer according to claim 1, characterized in that a sealing plate (6) is arranged on the cab (4) facing the gantry (2), and a sound insulation layer is arranged on the sealing plate (6).

4. Bulldozer according to claim 1, characterized in that it comprises a floor frame (5) arranged on said frame (3), said cab (4) being arranged on said floor frame (5).

5. A bulldozer according to claim 4, characterised in that said cab (4) comprises a frame beam (7) arranged at the bottom thereof and connected to said floor frame (5), a groove extending in the length direction of said frame beam (7) being provided in the surface of said frame beam (7) facing said floor frame (5), and a sealing strip (8) being arranged in said groove and abutting against said floor frame (5).

6. The bulldozer according to claim 4, characterised in that said floor frame (5) comprises a first horizontal plate (9) at the front, a second horizontal plate (10) at the rear, a vertical plate (11) connected between said first horizontal plate (9) and said second horizontal plate (10), and a seat frame (12) connected to the lower surface of said second horizontal plate (10) and the rear side surface of said vertical plate (11).

7. Bulldozer according to claim 6, characterized in that the lateral sides of said seat frame (12) are provided with reinforcing structures connected to said second horizontal plate (10), and the lower surface of said first horizontal plate (9) is provided with reinforcing beams (13).

8. A bulldozer according to claim 7, in which said seat frame (12) is provided with reinforcing bars (14) and reinforcing boxes (15) on its lateral sides, respectively.

9. The bulldozer according to claim 6, characterized in that the rear side surface, the lateral side surfaces and the bottom surface of said seat frame (12) are provided with sound insulation.

10. The bulldozer according to claim 6, characterised in that portions of the lower surface of said second horizontal plate (10) on either side of said seat frame (12) are provided with acoustic insulation, and portions of said vertical plates (11) on either side of said seat frame (12) are provided with acoustic insulation.