CN213478450U

CN213478450U - Combined type silencing system for diesel fork lift truck

Info

Publication number: CN213478450U
Application number: CN202021641493.4U
Authority: CN
Inventors: 王志鹏; 徐红梅; 金洋
Original assignee: Kaiaobaoli Jiangsu Forklift Co ltd
Current assignee: Kaiaobaoli Jiangsu Forklift Co ltd; Kion Baoli Jiangsu Forklift Co Ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2021-06-18
Anticipated expiration: 2030-08-07

Abstract

The utility model discloses a combination formula amortization system for diesel fork truck, including the muffler, the last muffler of exhausting that is linked together with the muffler, it includes the last blast pipe to go up the muffler of exhausting, top exhaust pipe and the shunt tubes of connection between last blast pipe and top exhaust pipe, the dustcoat is established to the shunt tubes dustcoat, the dustcoat is annular barrel, the terminal surface covers the annular end cover respectively about the dustcoat, so that form annular cavity between dustcoat and the shunt tubes outer wall, the sound cotton is inhaled in the intussuseption of annular cavity, a plurality of bleeder vents of equipartition on the shunt tubes pipe wall, the dustcoat sets up thermal shroud outward, thermal shroud fixes on the blast pipe. The combined type silencing system is reasonable in design, simple in structure, convenient to install, use and maintain and good in silencing effect.

Description

Combined type silencing system for diesel fork lift truck

Technical Field

The utility model belongs to the technical field of diesel fork lift truck technique and specifically relates to a combination formula amortization system for diesel fork lift truck.

Background

As a tool vehicle, a diesel fork lift truck is widely used in logistics distribution, port warehouse article handling, and workshop production. Due to the internal structure and the relevant working principle, the noise is relatively high during operation, the driver can be injured to a certain degree, the attention of the driver cannot be focused, misoperation occurs occasionally, alarm signals can be influenced due to too much sound, and the potential safety hazards are all generated. According to the research result of people in theory and practice at present, the silencer is the most effective mode of noise reduction, but along with the continuous promotion of customer to the comfortable demand of vehicle, people require more and more to the noise that fork truck drove, have proposed higher requirement to whole car exhaust silencing equipment like this.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the combined silencing system for the internal combustion forklift overcomes the defects of the prior art, and is simple and reasonable in structure, convenient to install and maintain and better in silencing and noise reducing effects.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a combination formula amortization system for diesel fork truck, includes muffler, the last muffler of exhausting that is linked together with the muffler, last muffler of exhausting include last blast pipe, top exhaust pipe and connect the shunt tubes between last blast pipe and top exhaust pipe, the dustcoat is established to the shunt tubes dustcoat, the dustcoat be annular barrel, the terminal surface covers annular end cover respectively about the dustcoat to make and form annular cavity between dustcoat and the shunt tubes outer wall, annular cavity intussuseption pack and inhale the sound cotton, shunt tubes pipe wall on a plurality of bleeder vents of equipartition, the dustcoat set up thermal shroud outward, thermal shroud fixes on the blast pipe.

Furthermore, the silencer is connected with the upper exhaust silencer through a flange.

Furthermore, the flange is provided with a reinforcing rib, and the reinforcing rib is connected with the flange and the upper exhaust pipe to play a role in reinforcing and supporting.

Furthermore, the sound-absorbing cotton is glass fiber and is wrapped with steel wool.

Furthermore, the aperture of the air holes is less than or equal to 3.5mm, and the hole spacing is 2.5-5 times of the aperture.

Further, the length of the heat shield is longer than that of the outer cover.

Further, heat dissipation holes are formed in the upper end and the lower end of the heat shield.

Furthermore, the pipe walls of the upper exhaust pipe and the top exhaust pipe are provided with arch pieces for fixedly supporting the heat shield.

The utility model discloses a combination formula amortization system for diesel fork truck, its beneficial effect is: combine together traditional muffler and last exhaust muffler, reach twice noise cancelling effect to reduce whole car noise. Specifically, after the air flow passes through the silencer, the air flow passes through the shunt tubes, the air holes are formed in the shunt tubes, sound absorbing cotton is arranged between the shunt tubes and the outer cover, the air flow expands and interferes in the upper exhaust silencer, air suction pulse is restrained, meanwhile, the sound absorbing cotton is absorbed by using an internal resistive sound absorbing material, and the absorption capacity of noise of different frequency sections is further increased. Structural design is simple reasonable, and the installation is used and is maintained conveniently, has improved fork truck driver's operating condition, has effectively improved driver's travelling comfort.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of an upper exhaust muffler;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

FIG. 4 is a sectional view taken along line B-B of FIG. 2;

in the figure, 1, a silencer, 2, an upper exhaust silencer, 3, an annular end cover, 4, a heat shield, 5, an outer cover, 6, sound absorbing cotton, 7, a shunt pipe, 8, an upper exhaust pipe, 9, a top exhaust pipe, 10, a flange, 11, a reinforcing rib and 12 are arch-shaped pieces.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1, a combination formula amortization system for diesel fork lift truck, including muffler 1, the last muffler 2 of exhausting that is linked together with muffler 1, it includes last blast pipe 8 to go up muffler 2 of exhausting, top blast pipe 9 and shunt tubes 7 of connection between last blast pipe 8 and top blast pipe 9, dustcoat 5 is established to shunt tubes 7 dustcoat, dustcoat 5 is annular barrel, annular end cover 3 is covered respectively to the terminal surface about dustcoat 5, so that form annular cavity between dustcoat 5 and the shunt tubes 7 outer wall, the cotton 6 of inhaling sound is filled in the annular cavity, a plurality of bleeder vents of equipartition on the shunt tubes 7 pipe wall, dustcoat 5 sets up thermal shroud 4 outward, thermal shroud 4 fixes on the blast pipe.

The silencer 1 is connected with the upper exhaust silencer 2 through a flange 10, and a reinforcing rib 11, a connecting flange 10 and an upper exhaust pipe 8 are arranged on the flange 10 to play a role in reinforcing and supporting.

The sound absorption cotton 6 is glass fiber, and is wrapped with steel wool.

The aperture of the air holes is less than or equal to 3.5mm, and the hole spacing is 2.5-5 times of the aperture.

The length of the heat shield 4 is longer than that of the outer cover, and heat dissipation holes are formed in the upper end and the lower end of the heat shield 4.

The upper exhaust pipe 8 and the top exhaust pipe 9 have pipe walls provided with bow members 12 for fixedly supporting the heat shield 4.

The combined silencing system utilizes the upper exhaust pipeline to design the upper exhaust silencer, and realizes the multistage silencing of airflow in a limited space through the combined structure of the shunt pipe and the soundproof cotton. Through tests, compared with the traditional silencer, the noise at the ear of a driver is reduced by 1-2dB, the working environment of the driver is improved, and the noise of the whole forklift is effectively reduced.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A combination formula sound deadening system for combustion forklifts, characterized by: including muffler (1), last exhaust muffler (2) that are linked together with muffler (1), last exhaust muffler (2) including last exhaust pipe (8), top exhaust pipe (9) and shunt tubes (7) of connection between last exhaust pipe (8) and top exhaust pipe (9), shunt tubes (7) dustcoat establish dustcoat (5), dustcoat (5) be annular barrel, terminal surface covers ring-shaped end cover (3) respectively about dustcoat (5) to make and form annular cavity between dustcoat (5) and shunt tubes (7) outer wall, annular cavity intussuseption in inhale sound cotton (6), shunt tubes (7) pipe wall on a plurality of bleeder vents of equipartitions, dustcoat (5) set up thermal shroud (4) outward, fix on the exhaust pipe thermal shroud (4).

2. The combined muffler system for a diesel lift truck of claim 1, wherein: the silencer (1) is connected with the upper exhaust silencer (2) through a flange (10).

3. The combined muffler system for a diesel lift truck of claim 2, wherein: the flange (10) is provided with a reinforcing rib (11) which is connected with the flange (10) and the upper exhaust pipe (8) to play a role in reinforcing and supporting.

4. The combined muffler system for a diesel lift truck of claim 1, wherein: the sound-absorbing cotton (6) is glass fiber and is wrapped by steel wool.

5. The combined muffler system for a diesel lift truck of claim 1, wherein: the aperture of the air holes is less than or equal to 3.5mm, and the hole spacing is 2.5-5 times of the aperture.

6. The combined muffler system for a diesel lift truck of claim 1, wherein: the length of the heat shield (4) is longer than that of the outer cover.

7. The combined muffler system for a diesel lift truck of claim 6, wherein: the upper end and the lower end of the heat shield (4) are provided with heat dissipation holes.

8. The combined muffler system for a diesel lift truck of claim 1, wherein: and the pipe walls of the upper exhaust pipe (8) and the top exhaust pipe (9) are provided with arch pieces (12) for fixedly supporting the heat shield (4).