CN217419802U

CN217419802U - Automatic pressure relief device for cab

Info

Publication number: CN217419802U
Application number: CN202221144800.7U
Authority: CN
Inventors: 陶磊; 徐立明; 尹明升; 彭鹏
Original assignee: Xuzhou XCMG Excavator Machinery Co Ltd
Current assignee: Xuzhou XCMG Excavator Machinery Co Ltd
Priority date: 2022-05-13
Filing date: 2022-05-13
Publication date: 2022-09-13
Anticipated expiration: 2032-05-13

Abstract

The utility model discloses an automatic pressure relief device of driver's cabin, include: the device comprises a torsion spring, a shielding plate, a bolt, a nut, a mounting seat and a sponge layer; the mounting seat is fixedly arranged on the cab board and positioned on the inner side of the air vent, the shielding plate is arranged on the mounting seat through a bolt, and the torsion spring is sleeved on the bolt and is accommodated in the mounting seat; an ear groove matched with the mounting seat is arranged on one side edge of the shielding plate; the torsion spring comprises a torsion spring body, a first torsion bar and a second torsion bar, wherein the first torsion bar and the second torsion bar are positioned at two ends of the torsion spring body; the utility model discloses an utilize the inside and outside pressure difference of driver's cabin to change and realize the control to sunshade direction of rotation to carry on spacingly to sunshade turned angle through the moment of torsion that the torsional spring was applyed the sunshade, realize simultaneously under the pressure alternation, the automatic switch of sunshade.

Description

Automatic pressure relief device for cab

Technical Field

The utility model relates to an engineering machine tool excavator technical field specifically is an automatic pressure relief device of driver's cabin.

Background

At present, when windows of a cab of an excavator are completely closed, doors of the cab are closed, air pressure in the cab rises rapidly, so that air pressure difference is generated on two sides of ear drum membranes of a driver, the driver feels uncomfortable ear pressure, meanwhile, the pressure in the cab is greater than the pressure outside the cab, the driver needs to spend more strength in the door closing process, and the use experience of closing the cab by the driver is poor.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome not enough among the prior art, the utility model provides an automatic pressure relief device of driver's cabin realizes the control to sunshade direction of rotation through utilizing the interior outer pressure difference change of driver's cabin to carry on spacingly to sunshade turned angle through the moment of torsion that the torsional spring was applyed the sunshade, realize simultaneously under the pressure alternation, the automatic switch of sunshade.

The technical scheme is as follows: first aspect the utility model provides an automatic pressure relief device of driver's cabin, include:

the mounting seat is fixedly mounted on the cab board and positioned on the inner side of the air vent, the shielding plate is mounted on the mounting seat through a bolt, and the torsion spring is sleeved on the bolt and is accommodated in the mounting seat;

wherein, an ear groove matched with the mounting seat is arranged on one side edge of the shielding plate; the first torsion bar at one end of the torsion spring is inserted into the mounting seat, and the second torsion bar at the other end of the torsion spring is accommodated in the ear groove.

In a further embodiment, a side of the mount remote from the cab board includes: the two side surfaces of the opening section are respectively extended outwards to form two symmetrical groups of ear plates, and the two groups of ear plates are respectively provided with a symmetrical first mounting hole group;

two side surfaces of the lug groove are accommodated between the two sets of lug plates and are provided with a second mounting hole group matched with the first mounting hole group; the first mounting hole group and the second mounting hole group are assembled through penetrating bolts.

In a further embodiment, the bolt is screwed with a nut through one end of the first mounting hole group, and the fixed connection between the shielding plate and the mounting seat is realized by screwing the nut.

In a further embodiment, the closed section is provided with a hollow structure for receiving the first torsion bar.

In a further embodiment, the thickness of the opening section is greater than that of the closing section, so that the torsion spring and the closing section form an included angle, and the first torsion rod is not disengaged from the hollow structure of the closing section all the time.

In a further embodiment, a sponge layer is adhered to the outer side face of the vent hole, and the sponge layer covers the vent hole and is used for filtering air flow of the through hole to prevent dust from entering the cab.

Has the advantages that: compared with the prior art, the utility model has the following advantage:

the control to the sunshade direction of rotation is realized through utilizing the interior outer pressure difference of driver's cabin to carry on spacingly to sunshade turned angle through the moment of torsion that the torsional spring applyed the sunshade, realize simultaneously under the pressure alternation, the automatically regulated of the interior outer pressure difference of driver's cabin can be realized to the automatic switch of sunshade, need not driver's operation, makes it obtain better experience with the car.

Drawings

FIG. 1 is a schematic view of the closing of the shutter of the automatic pressure relief device for the cab according to the present invention;

fig. 2 is a schematic view of the opening of the automatic pressure relief device shutter of the cab of the present invention;

FIG. 3 is an exploded view of the automatic pressure relief device of the cab of the present invention;

FIG. 4 is a schematic view of the automatic pressure relief device shutter of the cab of the present invention;

FIG. 5 is a schematic view of a mounting seat of the automatic pressure relief device for the cab of the present invention;

fig. 6 is a schematic view of the torsion spring of the automatic pressure relief device of the cab of the utility model.

The figures are labeled as follows: 1-torsion spring, 10-first torsion bar, 11-second torsion bar, 2-shielding plate, 20-ear groove, 3-bolt, 4-nut, 5-mounting seat, 50-ear plate and 6-sponge layer.

Detailed Description

In order to understand the technical content of the present invention more fully, the technical solutions of the present invention will be further described and illustrated with reference to the specific embodiments, but not limited thereto.

An automatic pressure relief device for a cab as shown in fig. 1 to 6 includes: the device comprises a torsion spring 1, a shielding plate 2, a bolt 3, a nut 4, a mounting seat 5 and a sponge layer 6;

the curtain board 2 is made of light-weight plastics and is low in cost, the mounting seat 5 is fixedly mounted on a cab board and is positioned on the inner side of the air vent, the curtain board 2 is mounted on the mounting seat 5 through the bolt 3, and the torsion spring 1 is sleeved on the bolt 3 and is accommodated in the mounting seat 5;

an ear groove 20 matched with the mounting seat 5 is arranged on one side edge of the shielding plate 2; the torsion spring 1 comprises a torsion spring 1 body, a first torsion bar 10 and a second torsion bar 11 which are positioned at two ends of the torsion spring 1 body, wherein the first torsion bar 10 at one end is inserted into the mounting seat 5, the second torsion bar 11 at the other end is accommodated in the ear groove 20, and the second torsion bar 11 is abutted against the ear groove 20 under the rotation of the shielding plate 2, so that the torsion is exerted on the shielding plate 2;

the side of the mounting 5 remote from the cab board comprises: the two side surfaces of the opening section are respectively extended outwards to form two symmetrical groups of 50 lug plates, and the two groups of 50 lug plates are respectively provided with symmetrical first mounting hole groups;

two side surfaces of the lug groove 20 are accommodated between the two groups of 50 lug plates and are provided with a second mounting hole group matched with the first mounting hole group; the first mounting hole group and the second mounting hole group are assembled through a penetrating bolt 3; bolt 3 runs through the one end spiro union of first mounting hole group and has nut 4, realizes the fixed connection of sunshade 2 and mount pad 5 through screwing up nut 4.

A hollow structure for accommodating the first torsion bar 10 is formed on the closed section;

the thickness of opening section is greater than the thickness of enclosed segment to make torsional spring 1 and enclosed segment have the contained angle, make first torsion bar 10 break away from the hollow structure of enclosed segment all the time, carry on spacingly to the torsion bar through mount pad 5, thereby guarantee that torsional spring 1 is stable to the moment of torsion of sunshade 2.

A sponge layer 6 is pasted on the outer side face of the vent hole, and the sponge layer 6 covers the vent hole and is used for filtering air flow at the through hole opening to prevent dust from entering a cab.

The working principle is as follows:

in the closing process of the car door of the cab, the air pressure in the cab is continuously increased, when the internal and external pressure difference of the cab is large to a certain degree and is enough to overcome the torque on the shielding plate 2 of the torsion spring 1, the shielding plate 2 is jacked open by the air in the cab as shown in figure 2, the air in the cab is reduced, the internal and external pressure difference of the cab is reduced until the internal and external pressure difference is not enough to overcome the torque exerted on the shielding plate 2 by the torsion spring 1, and the vent door is closed as shown in figure 1, so that the automatic pressure relief of the cab is realized.

The utility model discloses an utilize the interior outer pressure difference of driver's cabin to change the control that realizes 2 rotation directions of sunshade to carry on spacingly to 2 turned angle of sunshade through the moment of torsion that torsional spring 1 applyed 2 to sunshade, realize simultaneously that pressure alternation changes down, the automatically regulated of the interior outer pressure difference of driver's cabin can be realized to the automatic switch of sunshade 2, makes its experience of obtaining better car.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. An automatic pressure relief device of driver's cabin, characterized in that includes:

2. The automatic cab pressure relief device according to claim 1, wherein a side of said mounting seat remote from said cab plate comprises: the two side surfaces of the opening section are respectively extended outwards to form two symmetrical groups of ear plates, and the two groups of ear plates are respectively provided with symmetrical first mounting hole groups;

two side surfaces of the lug groove are accommodated between the two sets of lug plates and are provided with a second mounting hole set matched with the first mounting hole set; the first mounting hole group and the second mounting hole group are assembled through penetrating bolts.

3. The automatic pressure relief device for the cab of claim 1, wherein the bolt is screwed with a nut through one end of the first mounting hole group, and the fixed connection between the shield and the mounting seat is realized by screwing the nut.

4. The automatic pressure relief device for the cab of claim 2, wherein the closed section is provided with a hollow structure for receiving the first torsion bar.

5. The automatic pressure relief device for the cab of claim 2, wherein the thickness of the opening section is greater than that of the closing section, so that the torsion spring and the closing section form an included angle, and the first torsion bar is not separated from the hollow structure of the closing section all the time.

6. The automatic pressure relief device for the cab of claim 1, wherein a sponge layer is adhered to the outer side surface of the vent hole, and the sponge layer covers the vent hole to filter the air flow at the through hole to prevent dust from entering the cab.