Exhaust pipe airtightness detection equipment

Abstract

The utility model discloses an air tightness detection device for an exhaust pipe. The air tightness detection device comprises a base, a rotating platform, a luminous source and a pressing plate, a shell is fixedly arranged at the upper end of the base, an opening communicated with the interior of the shell is formed in the side wall of the shell, shading cloth is laid on the inner wall of the shell, a rotating platform used for supporting a pipe fitting is horizontally and rotatably arranged above the portion, located in the shell, of the base, and a light emitting source is vertically and fixedly arranged at the upper end of the portion, located in the pipe fitting, of the rotating platform. The top of the shell is horizontally and rotatably provided with a rotating disc, a pressing plate capable of abutting against the pipe fitting is horizontally and liftably arranged below the rotating disc, the air tightness detection equipment for the exhaust pipe can judge the air tightness of the pipe fitting according to the condition that the luminous source of the detection equipment emits light from the interior of the pipe fitting, and the air tightness detection equipment for the exhaust pipe is simple in structure and convenient to use. Operation and detection are very convenient, and the detection cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust pipe detection, in particular to an exhaust pipe air tightness detection device. Background Art

[0002] As the core component for automobile exhaust emissions, automobile exhaust pipes usually need to be tested for air tightness during their actual manufacturing process.

[0003] After searching: the Chinese patent application number is "CN202321046662.3", an air tightness detection device for an automobile exhaust pipe, including a clamping detection mechanism, and a clamping motor installed at the center position of the top surface of the clamping detection mechanism, an air tightness detection mechanism is arranged at the bottom of the clamping detection mechanism, and a lifting motor is arranged at the top of the air tightness detection mechanism, the clamping detection mechanism includes a clamping bracket, and a clamping slide groove is arranged inside the clamping bracket. By setting the clamping detection mechanism, not only automobile exhaust pipes of different lengths can be clamped and fixed, but also air can be injected into the interior of the automobile exhaust pipe through the air vents inside the sealing plug joint.

[0004] The inventor discovered the following problems in the prior art during the implementation of the present invention:

[0005] The prior art can not only clamp and fix automobile exhaust pipes of different lengths through a clamping detection mechanism, but also inject air into the interior of the automobile exhaust pipe through the air vents inside the sealing plug joint, and then put the automobile exhaust pipe into a detection water pool, and inflate the automobile exhaust pipe through an external air pump. When the air tightness of the automobile exhaust pipe is not good, bubbles will be generated in the detection water pool, thereby facilitating the detection of the air tightness of the automobile exhaust pipe.

[0006] Therefore, the existing detection equipment is not only complex in structure and operation, but also needs to be dried after the detection to prevent the exhaust pipe from being corroded, which not only increases the workload of the inspection personnel, but also increases the cost of use.

[0007] Therefore, it is an urgent problem to be solved by the present invention to provide an exhaust pipe air tightness detection device which can judge the sealing of a pipe by emitting light from the inside of the pipe through the light source of the detection device during use, has a simple structure, is very convenient to operate and detect, and reduces the detection cost. Utility Model Content

[0008] In view of the above technical problems, the purpose of the utility model is to overcome the problem that the detection equipment in the prior art is not only complex in structure, but also complex in operation, and after the detection, the exhaust pipe needs to be dried to avoid corrosion of the exhaust pipe, which not only increases the workload of the detection personnel, but also increases the cost of use. Thus, an exhaust pipe air tightness detection device is provided, which can judge the sealing of the pipe fitting by the light source of the detection equipment emitting light from the inside of the pipe fitting during use. The device has a simple structure, is very convenient to operate and detect, and reduces the detection cost.

[0009] In order to achieve the above-mentioned purpose, the utility model provides an exhaust pipe air tightness detection device, which includes: a base, a rotating platform, a light source and a pressing plate;

[0010] A shell having an open side wall connected to the interior is fixedly provided at the upper end of the base, and the inner wall of the shell is covered with a shading cloth. A rotating platform for supporting the pipe is horizontally and rotatably provided above the base inside the shell, and a light source is vertically fixed at the upper end of the rotating platform inside the pipe. A turntable is horizontally and rotatably provided on the top of the shell, and a pressure plate capable of leaning against the pipe is horizontally and liftably provided below the turntable.

[0011] Preferably, a sealing plate capable of covering the opening of the shell is detachably provided at the opening, and an observation window is provided at the side wall of the shell.

[0012] Preferably, the detection device further comprises a driving assembly for driving the pressing plate to move up and down in a vertical direction, wherein the driving assembly comprises: a cylinder, an electromagnet, a magnetic block and a push rod; wherein,

[0013] At least two cylinder bodies are spaced apart and vertically fixed at the bottom end of the turntable, and an electromagnet is fixedly installed at the top end of each cylinder body, and a magnetic block with the same magnetic property as the electromagnet after power is turned on is also horizontally and liftably installed inside, and a push rod that can pass through the bottom of the cylinder body is vertically fixed on the magnetic block, and the free end of the push rod is fixed on the pressure plate.

[0014] Preferably, a return spring is sleeved on each of the push rods located inside the cylinder body, and two ends of the return spring are respectively fixedly disposed on the cylinder body and the magnetic block.

[0015] Preferably, a fixed shaft is vertically fixedly provided at the bottom end of the shell, and the turntable is coaxially fixed on the fixed shaft through a bearing.

[0016] Preferably, the detection device further comprises a rotating assembly for driving the rotating platform to rotate, wherein the rotating assembly comprises: a rotating shaft, a first gear, a second gear and an operating shaft; wherein,

[0017] A rotatable shaft is vertically and penetrated inside the base, the rotating platform is fixed on the shaft, a first gear is coaxially fixed on the shaft inside the base, the operating shaft is horizontally and rotatably penetrated inside the base, and a second gear is coaxially fixed on the operating shaft and meshed with the first gear.

[0018] Preferably, the free end of the operating shaft passes through the side wall of the base and is coaxially fixed with a knob.

[0019] Preferably, the sealing plate is made of iron material, and the side walls of the shell near its opening are partially grooved inward to form strip-shaped slots, and a magnetic strip capable of being attracted to the sealing plate is fixedly arranged in each strip-shaped slot.

[0020] Preferably, a rubber pad is fixedly provided on the side of the pressing plate facing the pipe fitting.

[0021] According to the above technical solution, the exhaust pipe air tightness detection device provided by the utility model has the following beneficial effects when used:

[0022] (1) The shading cloth may be black or other shading materials to ensure that the inside of the housing is in dark light, so as to facilitate subsequent testing of the sealing of the pipe fittings.

[0023] (2) When in use, the pipe to be inspected is placed vertically on the rotating platform, and the light source is ensured to be located inside the pipe. After the pipe is placed, the pressure plate is driven to descend in the vertical direction until it abuts against the top of the pipe, so that the pipe is clamped and fixed on the rotating platform by the pressure plate. The light source is then connected to electricity so that it emits light inside the pipe, so that the inspector can judge the sealing of the pipe by observing whether the light is irradiated on the inner wall of the shell. The rotating platform is slowly rotated so that the inspector can inspect the pipe more comprehensively.

[0024] (3) If there are no cracks or holes on the side wall of the pipe, the light emitted by the light source inside the pipe will not shine on the inner wall of the shell, which indicates that the pipe is well sealed. On the contrary, if there are cracks or holes on the side wall of the pipe, the light emitted by the light source inside the pipe will shine on the inner wall of the shell through the cracks or holes, which indicates that the pipe is not well sealed.

[0025] Therefore, the inspectors use the above-mentioned inspection equipment to inspect, and can easily detect the sealing performance of the pipe fittings with the naked eye. The operation and inspection are very convenient, which reduces the inspection cost.

[0026] In summary, the utility model can judge the sealing of the pipe fitting by the light source of the detection equipment emitting light from the inside of the pipe fitting. It has a simple structure, is very convenient to operate and detect, and reduces the detection cost.

[0027] Other features and advantages of the utility model will be described in detail in the subsequent specific implementation mode; and the parts not involved in the utility model are the same as the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0029] Figure 1 It is a structural schematic diagram of an exhaust pipe air tightness detection device provided in a preferred embodiment of the utility model;

[0030] Figure 2 It is a schematic diagram of the internal structure of an exhaust pipe air tightness detection device provided in a preferred embodiment of the utility model;

[0031] Figure 3 yes Figure 2 A structural front view of

[0032] Figure 4 yes Figure 2 Structural cross-sectional view of

[0033] Figure 5 It is a schematic diagram of the assembly of a drive component of an exhaust pipe air tightness detection device provided in a preferred embodiment of the utility model.

[0034] Description of Reference Numerals

[0035] 1. Base; 2. Rotating platform; 3. Light source; 4. Turntable; 5. Press plate; 6. Shell; 7. Drive assembly; 701. Cylinder; 702. Electromagnet; 703. Magnetic block; 704. Push rod; 8. Rotating shaft; 9. Gear No. 1; 10. Gear No. 2; 11. Operating shaft; 12. Shading cloth; 13. Rubber pad; 14. Magnetic strip; 15. Observation window; 16. Sealing plate; 17. Reset spring; 18. Fixed shaft. DETAILED DESCRIPTION

[0036] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0037] like Figure 1-5As shown, the utility model provides an exhaust pipe air tightness detection device, the detection device comprises: a base 1, a rotating platform 2, a light source 3 and a pressing plate 5;

[0038] A shell 6 with an open side wall communicating with the interior is fixedly provided at the upper end of the base 1, and a shading cloth 12 is laid on the inner wall of the shell 6. A rotating platform 2 for supporting the pipe is horizontally and rotatably provided above the base 1 inside the shell 6, and a light source 3 is vertically fixed at the upper end of the rotating platform 2 inside the pipe. A turntable 4 is horizontally and rotatably provided on the top of the shell 6, and a pressure plate 5 capable of leaning against the pipe is horizontally and liftably provided below the turntable 4.

[0039] In the above scheme, the light source 3 can be an LED or an incandescent lamp, and a No. 1 rechargeable power supply is provided inside the rotating platform 2 to provide power to the light source 3, and the No. 1 rechargeable power supply is electrically connected to the light source 3 through a wire, and the light source 3 can emit red, blue or other light that is easy to distinguish from the natural environment. The shading cloth 12 can be black or other shading materials to ensure that the inside of the housing 6 is in dark light, so as to detect the sealing of the pipe fittings later.

[0040] When in use, the pipe to be inspected is placed vertically on the rotating platform 2, and the light source 3 is ensured to be located inside the pipe. After the pipe is placed, the pressing plate 5 is driven to descend in the vertical direction until it abuts against the top of the pipe, so that the pipe is clamped and fixed on the rotating platform 2 by the pressing plate 5. Then the light source 3 is powered to make the light source 3 emit light inside the pipe, so that the inspector can judge the sealing of the pipe by observing whether the light is irradiated on the inner wall of the shell 6. The rotating platform 2 is rotated slowly so that the inspector can inspect the pipe more comprehensively.

[0041] If there are no cracks or holes on the side wall of the pipe, the light emitted by the light source 3 inside it will not shine on the inner wall of the shell 6, which means that the sealing of the pipe is good. On the contrary, if there are cracks or holes on the side wall of the pipe, the light emitted by the light source 3 inside it will shine on the inner wall of the shell 6 through the cracks or holes, which means that the sealing of the pipe is poor.

[0042] The inspectors use the above-mentioned inspection equipment to inspect, and can easily detect the sealing performance of the pipe fittings with the naked eye. The operation and inspection are very convenient, which reduces the inspection cost.

[0043] In a preferred embodiment of the present invention, a sealing plate 16 that can cover the opening of the housing 6 is detachably provided, and an observation window 15 is provided on the side wall of the housing 6 .

[0044] In the above scheme, the pipe to be inspected is assembled on the rotating platform 2 in the shell 6 through the opening of the shell 6, and the pipe is clamped and fixed by the pressing plate 5.

[0045] In order to reduce the brightness inside the shell 6, after the pipe fittings are assembled inside the shell 6, the sealing plate 16 is covered on the open part of the shell 6 so that the shell 6 is in a sealed state to reduce the brightness of its internal environment, so that the inspector can observe the internal situation through the observation window 15.

[0046] In addition, the observation window 15 can be made of transparent glass, and its length and width are 2-5 cm respectively. In this way, the area of ​​the observation window 15 can be smaller, so that the brightness of the external environment has little effect on the luminosity inside the shell 1, or even negligible. Because the light emitted by the light source 3 is a straight line, therefore, during the observation process, by rotating the rotating platform 2 to drive the pipe to rotate, the inspector can observe through the observation window 15 whether there is light emitted by the light source 3 on the inner wall of the shell 6 opposite to the opening of the shell 6 to judge the sealing of the pipe.

[0047] In a preferred embodiment of the present invention, the detection device further includes a driving assembly 7 for driving the pressing plate 5 to move up and down in a vertical direction, and the driving assembly 7 includes: a cylinder 701, an electromagnet 702, a magnetic block 703 and a push rod 704; wherein,

[0048] At least two cylinder bodies 701 are spaced apart and vertically fixed at the bottom end of the turntable 4, and an electromagnet 702 is fixedly installed at the top of each cylinder body 701, and a magnetic block 703 with the same magnetic property as the electromagnet 702 after power is turned on is also horizontally and liftably installed inside, and a push rod 704 that can pass through the bottom of the cylinder body 701 is vertically fixed on the magnetic block 703, and the free end of the push rod 704 is fixed on the pressure plate 5.

[0049] In the above scheme, a No. 2 rechargeable power supply is fixedly provided at the bottom end of the turntable 4 located between the two cylinder bodies 701. The No. 2 rechargeable power supply is energized with the two electromagnets 702 in the two cylinder bodies 701 through electric wires to provide electrical energy to both.

[0050] During use, after the pipe is placed on the rotating platform 2, the inspector holds the pipe with his hand and energizes the two electromagnets 702 at the same time. After energization, the two electromagnets 702 have the same magnetic force as the two magnet blocks 702. Therefore, a repulsive force is generated between the electromagnet 702 and the magnetic block 703 in each cylinder body 701, and under the action of the repulsive force, the magnetic block 703 drives the push rod 704 to push the pressure plate 5 down in the vertical direction until the pressure plate 5 rests on the top of the pipe. The inspector can then release his hand to clamp and fix the pipe.

[0051] In a preferred embodiment of the present invention, a return spring 17 is sleeved on each of the push rods 704 located inside the cylinder body 701 , and two ends of the return spring 17 are fixedly disposed on the cylinder body 701 and the magnetic block 703 , respectively.

[0052] In the above scheme, when in use, after the pipe is placed on the rotating platform 2, the inspector holds the pipe with his hand and energizes the two electromagnets 702 at the same time. After energization, the two electromagnets 702 have the same magnetic force as the two magnet blocks 702. Therefore, a repulsive force is generated between the electromagnet 702 and the magnetic block 703 in each cylinder body 701, and under the action of the repulsive force, the magnetic block 703 drives the push rod 704 to push the pressure plate 5 down in the vertical direction until the pressure plate 5 rests on the top of the pipe. During the descent, the magnetic block 703 compresses the reset spring 17 mounted on the push rod 704 to put it in a compressed state.

[0053] When the inspection of the pipe fittings is completed, the two electromagnets 703 are powered off. After the power is turned off, the two electromagnets 703 lose their magnetic force, and the repulsive force generated between the electromagnet 702 and the magnetic block 703 in each cylinder body 701 disappears. At the same time, each push rod 704, under the action of the reset spring 17, pushes the magnetic block 703 to reset in the vertical direction. During the resetting process, the pressure plate 5 is pulled up vertically and away from the pipe fittings, so that the inspectors can remove the inspected pipe fittings.

[0054] It is to be noted that the driving assembly may also be replaced by a cylinder or a hydraulic cylinder in the prior art or other structures capable of achieving the lifting and lowering of the pressing plate 5 .

[0055] In a preferred embodiment of the present invention, a fixed shaft 18 is vertically fixedly provided at the bottom end of the housing 6 , and the turntable 4 is coaxially fixed on the fixed shaft 18 via a bearing.

[0056] In the above scheme, when the pressure plate 5 descends and abuts against the pipe, the rotating platform 2 is rotated to drive the pipe to rotate together with it. The pressure plate 5 can rotate together with the rotating platform 2 and the pipe through the cooperation of the turntable 4. During the rotation process, the rotating platform 2 and the pressure plate 5 are used in cooperation to clamp the pipe between the two, so as to prevent the pipe from sliding during the process of rotating together with it.

[0057] In a preferred embodiment of the present invention, the detection device further comprises a rotating assembly for driving the rotating platform 2 to rotate, the rotating assembly comprising: a rotating shaft 8, a first gear 9, a second gear 10 and an operating shaft 11; wherein,

[0058] A rotatable shaft 8 is vertically and penetrated inside the base 1, the rotating platform 2 is fixed on the shaft 8, a first gear 9 is coaxially fixed on the shaft 8 inside the base 1, the operating shaft 11 is horizontally and rotatably penetrated inside the base 1, and a second gear 10 meshingly connected to the first gear 9 is coaxially fixed on the operating shaft 11.

[0059] In the above scheme, when in use, the inspector can drive the rotating shaft 8 to drive the rotating platform 2 and the pipe fittings clamped thereon by the pressure plate 5 to rotate slowly by rotating the operating shaft 11 and cooperating with the meshingly connected gear 9 and the gear 2 10, so that the inspector can more comprehensively detect the sealing of the pipe fittings.

[0060] In a preferred embodiment of the present utility model, the free end of the operating shaft 11 passes through the side wall of the base 1 and is coaxially fixed with a knob.

[0061] In the above scheme, when in use, the inspector can hold the knob and turn the knob to drive the operating shaft 11 to rotate together, so that the meshing connected No. 1 gear 9 and the No. 2 gear 10 can be used together to drive the rotating shaft 8 to drive the rotating platform 2 to rotate slowly.

[0062] Of course, the knob can be replaced by a reduction motor, which is fixed on the base 1 and coaxially connected to the operating shaft 11 through a coupling, so as to drive the operating shaft 11 to rotate through the reduction motor.

[0063] In a preferred embodiment of the present invention, the sealing plate 16 is made of iron material, the side walls of the shell 6 near its opening are partially grooved inward to form strip-shaped slots, and a magnetic strip 14 capable of being attracted to the sealing plate 16 is fixedly arranged in each strip-shaped slot.

[0064] In the above solution, since the sealing plate 16 is made of iron and can be attracted to the magnetic strip 14, when in use, the sealing plate 16 only needs to be covered on the opening of the housing 6, and under the suction of the magnetic strip 14, the sealing plate 16 can be adsorbed on the housing 6 to seal the opening, making disassembly very convenient.

[0065] In a preferred embodiment of the present invention, a rubber pad 13 is fixedly provided on the side of the pressing plate 5 facing the pipe fitting.

[0066] In the above scheme, on the one hand, it plays a role of sealing, and on the other hand, it plays a role of protecting the pipe fittings to prevent the pressure plate 5 from crushing the pipe fittings.

[0067] In addition, a rubber pad 13 may also be fixedly disposed on the upper end of the rotating platform 2 .

[0068] In summary, the exhaust pipe air tightness detection equipment provided by the utility model overcomes the problem that the detection equipment in the prior art is not only complex in structure but also complex in operation. After the detection, the exhaust pipe needs to be dried to prevent the exhaust pipe from being corroded, which not only increases the workload of the detection personnel but also increases the cost of use.

[0069] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0070] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0071] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. An exhaust pipe air tightness detection device, characterized in that: The detection device comprises: a base (1), a rotating platform (2), a light source (3) and a pressing plate (5); A shell (6) having an open side wall communicating with the interior is fixedly provided at the upper end of the base (1); the inner wall of the shell (6) is covered with a shading cloth (12); a rotating platform (2) for supporting the pipe is horizontally and rotatably provided above the base (1) inside the shell (6); a light source (3) is vertically fixedly provided at the upper end of the rotating platform (2) inside the pipe; a turntable (4) is horizontally and rotatably provided on the top of the shell (6); and a pressure plate (5) capable of resting on the pipe is horizontally and rotatably provided below the turntable (4).

2. The exhaust pipe air tightness detection device according to claim 1, characterized in that: A sealing plate (16) capable of covering the opening of the shell (6) is detachably provided, and an observation window (15) is provided on the side wall of the shell (6).

3. The exhaust pipe air tightness detection device according to claim 1, characterized in that: The detection device also includes a driving assembly (7) for driving the pressing plate (5) to move up and down in a vertical direction, wherein the driving assembly (7) includes: a cylinder (701), an electromagnet (702), a magnetic block (703) and a push rod (704); wherein: At least two cylinder bodies (701) are spaced apart and vertically fixed at the bottom end of the turntable (4), and an electromagnet (702) is fixedly arranged at the top end of each cylinder body (701), and a magnetic block (703) having the same magnetic properties as the electromagnet (702) after power is supplied is also horizontally and liftably arranged inside, and a push rod (704) capable of passing through the bottom of the cylinder body (701) is vertically fixed on the magnetic block (703), and the free end of the push rod (704) is fixed on the pressure plate (5).

4. The exhaust pipe air tightness detection device according to claim 3, characterized in that: A return spring (17) is sleeved on each push rod (704) located inside the cylinder body (701), and two ends of the return spring (17) are respectively fixedly arranged on the cylinder body (701) and the magnetic block (703).

5. The exhaust pipe air tightness detection device according to claim 1, characterized in that: A fixed shaft (18) is vertically fixed at the bottom end of the housing (6), and the turntable (4) is coaxially fixed on the fixed shaft (18) via a bearing.

6. The exhaust pipe air tightness detection device according to claim 1, characterized in that: The detection device also includes a rotating assembly for driving the rotating platform (2) to rotate, wherein the rotating assembly includes: a rotating shaft (8), a first gear (9), a second gear (10) and an operating shaft (11); wherein: A rotatable rotating shaft (8) is vertically and penetrated inside the base (1), the rotating platform (2) is fixed on the rotating shaft (8), a first gear (9) is coaxially fixed on the rotating shaft (8) located inside the base (1), the operating shaft (11) is horizontally and rotatably penetrated inside the base (1), and a second gear (10) meshingly connected with the first gear (9) is coaxially fixed on the operating shaft (11).

7. The exhaust pipe air tightness detection device according to claim 6, characterized in that: The free end of the operating shaft (11) passes through the side wall of the base (1) and is coaxially fixed with a knob.

8. The exhaust pipe air tightness detection device according to claim 2, characterized in that: The sealing plate (16) is made of iron material, and the side walls of the housing (6) near its opening are partially recessed inward to form strip-shaped slots, and a magnetic strip (14) capable of being attracted to the sealing plate (16) is fixedly arranged in each strip-shaped slot.

9. The exhaust pipe air tightness detection device according to claim 1, characterized in that: A rubber pad (13) is fixedly arranged on the side of the pressing plate (5) facing the pipe fitting.

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