Connecting structure of vehicle flash hider

Abstract

The utility model discloses a vehicle flash hider connecting structure which comprises a flash hider connecting pipe, the inner wall of the flash hider connecting pipe is rotationally connected with a first lead screw and a second lead screw through bearings, and the end, away from the first lead screw, of the second lead screw penetrates through the flash hider connecting pipe, extends to the outside and is fixedly connected with a rotary knob. The outer surface of the first lead screw and the outer surface of the second lead screw are both in threaded connection with moving plates, connecting clamping grooves are formed in one sides of the two moving plates, fixing inserting holes communicating with the connecting clamping grooves are formed in the two symmetrical side faces of the moving plates, and clamping plates are clamped to the inner walls of the two connecting clamping grooves. One end of each clamping plate is fixedly connected with a supporting plate, one side of each supporting plate is fixedly connected with an anti-skid pad, and each clamping plate is provided with a clamping structure. According to the utility model, a structure for supporting the interior of the exhaust pipe is additionally arranged on the fireproof cap structure, so that the structural stability of the exhaust pipe is ensured, and the deformation condition of the exhaust pipe is avoided.

Description

Technical field:

[0001] The utility model relates to the technical field of fireproof caps, in particular to a connection structure of a vehicle fireproof cap. Background technology:

[0002] When a vehicle enters inflammable and explosive fireproof areas such as oil fields, storage areas, textiles, flammable goods factories, ports, etc., it is necessary to install a fire cap on the car exhaust pipe in advance to eliminate sparks emitted when the engine is exhausted. The car exhaust pipe fire cap is also known as the motor vehicle exhaust spark arrester, the car exhaust pipe fire cover and the spark arrester. It is installed behind the motor vehicle exhaust pipe to allow the exhaust flow to pass through and prevent the flame and sparks in the exhaust flow from ejecting. It is an important safety and fire protection product that must be equipped for national key fire prevention units and all transportation vehicles in inflammable and explosive areas.

[0003] In the prior art, the fire cap is generally installed on the exhaust pipe through a pipe clamp. The exhaust tail pipe is a subsidiary part of the engine exhaust after-processor. The engine is welded to the after-processor assembly as a whole when it leaves the factory, and the wall thickness is not more than 2mm. In the process of directly connecting the fire cap to the exhaust tail pipe through the clamp, in order to ensure the firmness of the clamp, the pipe clamp and the exhaust pipe are usually clamped. In the process of connecting the pipe clamp, the vehicle exhaust tail pipe is easily compressed and deformed, which affects the service life of the exhaust pipe. Therefore, a fire cap for vehicles entering flammable and explosive places is needed to solve the above problems. Utility model content:

[0004] The utility model aims to provide a connection structure of a vehicle fire cap, and solves the problem of deformation of the exhaust pipe caused by clamping of a clamp by providing the fire cap connection structure.

[0005] The purpose of the utility model is implemented by the following technical scheme: a connection structure of a vehicle fire cap, comprising a fire cap connecting pipe, the outer surface of the fire cap connecting pipe connected to the automobile exhaust pipe is sleeved with a pipe hoop, the inner wall of the fire cap connecting pipe is rotatably connected to a first screw rod through a bearing, one end of the first screw rod is connected to a second screw rod, the end of the second screw rod away from the first screw rod passes through the fire cap connecting pipe and extends to the outside and is fixedly connected with a knob, the outer surfaces of the first screw rod and the second screw rod are both threadedly connected to a movable plate, one side of the two movable plates are provided with a connecting slot, two symmetrical side surfaces of the two movable plates are provided with fixed jacks connected to the connecting slot, the inner walls of the two connecting slots are both clamped with clamping plates, one end of the two clamping plates are fixedly connected to a support plate, one side of the two support plates are fixedly connected with an anti-slip pad, and the two clamping plates are provided with a clamping structure connecting the clamping plate and the movable plate.

[0006] Furthermore, the clamping structure includes a mounting hole, a fixing spring and a fixing plug. The mounting holes are opened on two symmetrical sides of the clamping plate. The inner walls of the two mounting holes are fixedly connected to the fixing springs, and one end of the two fixing springs is fixedly connected to the fixing plug.

[0007] Furthermore, the first screw rod and the second screw rod have opposite rotation directions, and the first screw rod and the second screw rod have the same pitch.

[0008] Furthermore, the anti-slip pad is in an arc shape and is made of rubber.

[0009] Furthermore, the length of the fixing spring is smaller than the depth of the mounting hole, the fixing plug is slidably connected to the mounting hole, and the size of the fixing plug is adapted to that of the fixing socket.

[0010] Advantages of the utility model: the utility model adds a structure for supporting the inside of the exhaust pipe on the fire cap connecting pipe, thereby ensuring the structural stability of the exhaust pipe, avoiding deformation of the exhaust pipe and extending the service life. Description of the drawings:

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a side sectional view of the utility model;

[0014] Figure 3 This is a schematic diagram of the first screw rod and the second screw rod of the utility model;

[0015] Figure 4 This is a schematic diagram of the support plate connection structure of the utility model;

[0016] Figure 5 It is a schematic diagram of the clamping structure of the clamping plate and the movable plate of the utility model;

[0017] Figure 6 It is a structural schematic diagram of the movable plate of the utility model;

[0018] Figure 7 For this utility model Figure 2 Enlarged view of part A in the middle.

[0019] In the figure: 1, exhaust pipe, 2, fire cap connecting pipe, 3, pipe clamp, 4, fire cap, 5, first screw rod, 6, second screw rod, 7, knob, 8, movable plate, 9, connecting slot, 10, fixed jack, 11, clamping plate, 12, supporting plate, 13, anti-slip pad, 14, clamping structure, 1401, mounting hole, 1402, fixing spring, 1403, fixing plug. Specific implementation method:

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1-7 As shown, a connection structure of a vehicle fire cap comprises a fire cap connecting pipe 2, one end of the fire cap connecting pipe 2 is sleeved on the automobile exhaust pipe 1, and the other end is fixedly connected to a fire cap 4, the outer surface of the end of the fire cap connecting pipe 2 connected to the automobile exhaust pipe 1 is sleeved with a pipe clamp 3, and a plurality of strip-shaped notches are evenly opened at the end of the fire cap connecting pipe 2 connected to the automobile exhaust pipe 1, the inner wall of the fire cap connecting pipe 2 is rotatably connected to a first screw rod 5 through a bearing, one end of the first screw rod 5 is connected to a second screw rod 6, and one end of the second screw rod 6 away from the first screw rod 5 passes through the fire cap connecting pipe 2 and extends to the outside of the fire cap connecting pipe 2 and is fixedly connected to a knob 7, and the outer surfaces of the first screw rod 5 and the second screw rod 6 are fixedly connected. A movable plate 8 is threadedly connected to the surface, the first screw rod 5 and the second screw rod 6 have opposite rotation directions, the first screw rod 5 and the second screw rod 6 have the same pitch, a connecting slot 9 is provided on one side of the two movable plates 8, and two symmetrical side surfaces of the two movable plates 8 are provided with fixed sockets 10 connected to the connecting slot 9, the inner walls of the two connecting slots 9 are clamped with a clamping plate 11, one end of the two clamping plates 11 is fixedly connected to a support plate 12, one side of the two support plates 12 is fixedly connected with an anti-skid pad 13, the anti-skid pad 13 is arc-shaped, and the material of the anti-skid pad 13 is rubber, and the two clamping plates 11 are provided with a clamping structure 14 connecting the clamping plate 11 and the movable plate 8.

[0022] As a preferred embodiment, the clamping structure 14 includes a mounting hole 1401, a fixing spring 1402 and a fixing plug 1403. The mounting holes 1401 are provided on two symmetrical sides of the clamping plate 11. The inner walls of the two mounting holes 1401 are fixedly connected with the fixing springs 1402. One end of the two fixing springs 1402 is fixedly connected with the fixing plug 1403. The length of the fixing spring 1402 is less than the depth of the mounting hole 1401. The fixing plug 1403 is slidably connected with the mounting hole 1401. The fixing plug 1403 is adapted to the size of the fixing socket 10.

[0023] Working principle:

[0024] When installing the fire cap 4 on the exhaust pipe 1, firstly sleeve the fire cap connecting pipe 2 on the exhaust pipe 1. At this time, the two support plates 12 enter the interior of the exhaust pipe 1. Then rotate the knob 7 to make the first screw rod 5 and the second screw rod 6 rotate at the same time. The first screw rod 5 and the second screw rod 6 respectively drive the two movable plates 8 to move in opposite directions. The two movable plates 8 respectively drive the two clamping plates 11 to make relative movement and move the same distance. At this time, the two support plates 12 drive the two anti-skid pads 13 to move toward the wall of the exhaust pipe 1, so that the anti-skid pads 13 are tightly fitted with the wall of the exhaust pipe 1. At this time, the inner wall of the exhaust pipe 1 is supported by the support plates 12 and the anti-skid pads 13 to ensure the stability of the exhaust pipe 1. Then, the fire cap connecting pipe 2 is installed on the exhaust pipe 1 through the pipe clamp 3. At this time, the fire cap 4 is connected to the exhaust pipe 1.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A connection structure of a vehicle fire cap, comprising a fire cap connection pipe, characterized in that: The outer surface of one end of the fire cap connecting pipe connected to the automobile exhaust pipe is sleeved with a pipe clamp, the inner wall of the fire cap connecting pipe is rotatably connected to a first screw rod through a bearing, one end of the first screw rod is connected to a second screw rod, the end of the second screw rod away from the first screw rod passes through the fire cap connecting pipe and extends to the outside and is fixedly connected to a knob, the outer surfaces of the first screw rod and the second screw rod are both threadedly connected to a movable plate, one side of the two movable plates are provided with a connecting slot, two symmetrical side surfaces of the two movable plates are provided with fixed jacks connected to the connecting slot, the inner walls of the two connecting slots are clamped with clamping plates, one end of the two clamping plates are fixedly connected to a support plate, one side of the two support plates are fixedly connected to an anti-slip pad, and the two clamping plates are provided with a clamping structure connecting the clamping plate and the movable plate.

2. A vehicle fire cap connection structure according to claim 1, characterized in that: The clamping structure includes a mounting hole, a fixing spring and a fixing plug. The mounting holes are opened on two symmetrical sides of the clamping plate. The inner walls of the two mounting holes are fixedly connected to the fixing springs, and one end of the two fixing springs is fixedly connected to the fixing plug.

3. A connection structure for a vehicle fire cap according to claim 2, characterized in that: The first screw rod and the second screw rod have opposite rotation directions, and the first screw rod and the second screw rod have the same pitch.

4. A vehicle fire cap connection structure according to claim 3, characterized in that: The anti-skid pad is in an arc shape and is made of rubber.

5. The connection structure of a vehicle fire cap according to claim 4, characterized in that: The length of the fixing spring is smaller than the depth of the mounting hole, the fixing plug is slidably connected with the mounting hole, and the size of the fixing plug is adapted to the size of the fixing plug hole.

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