CN211038783U

CN211038783U - Fireproof cover

Info

Publication number: CN211038783U
Application number: CN201922247138.2U
Authority: CN
Inventors: 肖俊港
Original assignee: HEBEI SHENAN AUTO PARTS TECHNOLOGY CO LTD
Current assignee: HEBEI SHENAN AUTO PARTS TECHNOLOGY CO LTD
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-07-17
Anticipated expiration: 2029-12-16

Abstract

The utility model discloses a fireproof cover, including the procapsid that has the intake pipe and the back casing that has the gas outlet, the procapsid is connected with the back casing, through the rotatable perforation spark-arrest board that is provided with of pivot in the procapsid, the perforation spark-arrest board comprises first back-fire relief piece and second back-fire relief piece, the cross-section of pivot is square, the both sides cover of pivot is equipped with the axle sleeve, the middle part cooperation pivot of axle sleeve is provided with the square hole, the cooperation axle sleeve is provided with the shaft hole on the procapsid, be provided with spacing edge on the axle sleeve, the one end of pivot is connected with stirs the subassembly, the other end of pivot is provided with the locating part, two sides of pivot respectively with first. The utility model discloses changed traditional circular pivot into square pivot, made pivot and perforation barrier plate improve into the face contact by line contact like this, great improvement area of contact, and then after the pressure welding is connected, intensity is higher, great extension life.

Description

Fireproof cover

Technical Field

The utility model relates to a vehicle safety device technical field especially relates to a fire prevention cover.

Background

When a vehicle enters a fire-proof area such as a gas station and the like, a fire-proof cover is required to be installed on an engine exhaust pipe in advance to eliminate engine exhaust sparks, the currently used fire-proof cover is a perforated barrier plate which is arranged in a shell and can rotate for 90 degrees, the barrier plate is rotated to a flow-blocking position before the vehicle enters the fire-proof area to play a role in extinguishing sparks, and after the vehicle exits the fire-proof area, the perforated barrier plate is rotated to a downstream position to reduce additional resistance.

To above-mentioned structure, the cross-under is fixed with the pivot in the perforation barrier plate, the casing outside of fire prevention cover is provided with and is used for driving pivot pivoted driving lever, stir the driving lever through the manual rotation that realizes the perforation barrier plate, the perforation barrier plate generally comprises two disks, the pivot is passed and the pivot is connected through the welded mode with the position of disk contact by the centre of two disks, because the cross-section of pivot is circular, so lead to pivot and disk be line contact basically, after welding like this, the welded position is comparatively weak, there is very big risk of opening the welding in long-time use, serious influence fire prevention cover's life.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to avoid prior art's weak point, provide a fire prevention cover to effectively solve the weak point that exists among the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a fire prevention cover, is connected with the back casing including the procapsid that has the intake pipe and the back casing that has the gas outlet, the procapsid is connected with the back casing, through the rotatable perforation back-fire relief board that is provided with of pivot in the procapsid, the perforation back-fire relief board comprises first back-fire relief piece and second back-fire relief piece, and the pivot passes and with first back-fire relief piece and second back-fire relief piece welded connection between first back-fire relief piece and the second back-fire relief piece, the cross-section of pivot is square, and the both sides cover of pivot is equipped with the axle sleeve, and the middle part cooperation pivot of axle sleeve is provided with the square hole, cooperation axle sleeve is provided with the shaft hole on the procapsid, is provided with spacing edge on the axle sleeve, the one end of pivot is connected with stirs the subassembly, and the other.

Furthermore, a ring edge is arranged around the shaft hole.

Further, the ring rim is directly stamped on the front housing.

Further, stir the subassembly and include spacing piece and driving lever, spacing piece and pivot fixed connection, driving lever and spacing piece fixed connection are provided with the arc spacing groove around the pivot on the spacing piece, the fixed spacing post that is provided with on the procapsid, spacing post setting is provided with compression spring at the spacing inslot of arc and between spacing post and the spacing piece.

Furthermore, the limiting sheet is provided with a mounting hole in a matching manner with the rotating shaft, and the rotating shaft penetrates into the mounting hole and then is connected with the limiting sheet in a welding manner.

Furthermore, the limiting part is a cotter pin, and a pin hole is formed in the rotating shaft in a matched mode with the cotter pin.

The above technical scheme of the utility model following beneficial effect has: the utility model discloses changed traditional circular pivot into square pivot, made pivot and perforation barrier plate improve into the face contact by line contact like this, great improvement area of contact, and then after the pressure welding is connected, intensity is higher to solved because welding area is little, can not bear the roast of pressure of exhaust and high temperature for a long time, caused the pivot to break away from with the barrier plate and made the easy drawback of damaging of fire prevention cover, great extension life.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic perspective view of a second embodiment of the present invention;

fig. 4 is a top view of an embodiment of the present invention;

FIG. 5 is a sectional view taken along line B-B of FIG. 4;

FIG. 6 is an enlarged view of a portion of FIG. 5 at D;

FIG. 7 is an enlarged view of a portion of FIG. 5 at E;

FIG. 8 is a cross-sectional view taken along line C-C of FIG. 4;

FIG. 9 is an enlarged view of a portion of FIG. 8 at F;

fig. 10 is a schematic view of a partial structure of an embodiment of the present invention;

fig. 11 is an exploded view of fig. 10.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-11, a fire prevention cover described in this embodiment, including the procapsid 2 that has intake pipe 1 and the back casing 4 that has gas outlet 3, procapsid 2 is connected through the clamp with back casing 4, rotatable perforation spark-arrest board 6 that is provided with through pivot 5 in the procapsid 2, perforation spark-arrest board 6 comprises first fire-arrest piece 601 and second fire-arrest piece 602, first fire-arrest piece 601 and second fire-arrest piece 602 around through the mode fixed connection of spot welding, pivot 5 passes and with first fire-arrest piece 601 and second fire-arrest piece 602 welded connection between first fire-arrest piece 601 and the second fire-arrest piece 602, this welding mode is pressure welding, above structure is the conventional structure in the current fire prevention cover, in order to strengthen the welded connection intensity between pivot 5 and the perforation spark-arrest board 6, make following structural improvement:

set up the cross-section of pivot 5 into squarely, the both sides cover of pivot 5 is equipped with axle sleeve 8, the middle part cooperation pivot 5 of axle sleeve 8 is provided with square hole 801, cooperation axle sleeve 8 is provided with shaft hole 201 on the procapsid 2, be provided with spacing edge 802 on the axle sleeve 8, the one end of pivot 5 is connected with stirs subassembly 9, the other end of pivot 5 is provided with locating part 10, two sides of pivot 5 respectively with first back-fire relief piece 601, the inboard laminating setting of second back-fire relief piece 602, as shown in figure 6, 7, 9, because pivot 5 and first back-fire relief piece 601, the face of second back-fire relief piece 602 contact is the plane, so great increase area of contact, after the pressure welding is connected like this, great improvement the intensity of junction, great life has prolonged.

In addition, a square jack structure is formed between the first fire retardant sheet 601 and the second fire retardant sheet 602, the rotating shaft 5 penetrates through the square jack, a circumferential limiting structure is naturally generated between the rotating shaft 5 and the perforated fire retardant plate 6, and therefore even if the perforated fire retardant plate 6 and the rotating shaft 5 are not welded, the rotating action can be completed, or the welded connection is assisted through the structure, and the stability of the joint is further improved.

All be provided with the air current guiding hole on first back-fire relief piece 601 and the second back-fire relief piece 602, preferentially, do not be provided with the air current guiding hole in the position corresponding with pivot 5, like this can further increase pivot 5 and the area of contact of first back-fire relief piece 601 and second back-fire relief piece 602, and then increase the area of connection of pressure welding.

Be provided with around shaft hole 201 and encircle rim 202, encircle rim 202 and form for direct punching press on preceding casing 2, through setting up ring rim 202, increased the area of contact of procapsid 2 with axle sleeve 8 for pivot 5 moves more smoothly at the pivoted in-process, makes the operation laborsaving more.

As shown in fig. 2, toggle assembly 9 includes spacing piece 901 and driving lever 902,

spacing piece

901 and 5 fixed connection of pivot, driving lever 902 and spacing piece 901 fixed connection, spacing piece 901 is last to be provided with arc spacing groove 903 around pivot 5, the fixed spacing post 11 that is provided with on the procapsid 2, spacing post 11 sets up in arc spacing groove 903 and is provided with compression spring 904 between spacing post 11 and the spacing piece 901.

The limiting sheet 901 is provided with a mounting hole in cooperation with the rotating shaft 5, and the rotating shaft 5 penetrates into the mounting hole and then is connected with the limiting sheet 901 in a welding mode.

The limiting member 10 is a cotter pin, and the rotating shaft 5 is provided with a pin hole 501 matching with the cotter pin.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a fire prevention cover, is connected with the back casing including the procapsid that has the intake pipe and the back casing that has the gas outlet, the procapsid, through the rotatable perforation back-fire relief board that is provided with of pivot in the procapsid, perforation back-fire relief board comprises first back-fire relief piece and second back-fire relief piece, and the pivot passes and with first back-fire relief piece and second back-fire relief piece welded connection, its characterized in that from first back-fire relief piece and second back-fire relief piece between the piece: the cross-section of pivot is square, and the both sides cover of pivot is equipped with the axle sleeve, and the middle part cooperation pivot of axle sleeve is provided with the square hole, the cooperation axle sleeve is provided with the shaft hole on the procapsid, is provided with spacing edge on the axle sleeve, the one end of pivot is connected with stirs the subassembly, and the other end of pivot is provided with the locating part, two sides of pivot set up with the inboard laminating of first back-fire relief piece, second back-fire relief piece respectively.

2. A fire protection shield as claimed in claim 1, wherein: and a ring edge is arranged around the shaft hole.

3. A fire protection shield as claimed in claim 2, wherein: the ring edge is formed by directly stamping on the front shell.

4. A fire protection shield as claimed in claim 1, wherein: the poking assembly comprises a limiting piece and a poking rod, the limiting piece is fixedly connected with the rotating shaft, the poking rod is fixedly connected with the limiting piece, an arc-shaped limiting groove is formed in the limiting piece around the rotating shaft, a limiting column is fixedly arranged on the front shell, and the limiting column is arranged in the arc-shaped limiting groove and is provided with a compression spring between the limiting column and the limiting piece.

5. A fire protection shield as claimed in claim 4, wherein: the limiting piece is provided with a mounting hole in a matching mode with the rotating shaft, and the rotating shaft penetrates into the mounting hole and then is connected with the limiting piece in a welding mode.

6. A fire protection shield as claimed in claim 1, wherein: the locating part is a cotter pin, and a pin hole is formed in the rotating shaft in a matched mode with the cotter pin.