CN218973766U - Automobile exhaust pipe detection air tightness gauge - Google Patents
Automobile exhaust pipe detection air tightness gauge Download PDFInfo
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- CN218973766U CN218973766U CN202223268866.XU CN202223268866U CN218973766U CN 218973766 U CN218973766 U CN 218973766U CN 202223268866 U CN202223268866 U CN 202223268866U CN 218973766 U CN218973766 U CN 218973766U
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- exhaust pipe
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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Abstract
The utility model relates to the field of exhaust pipe air tightness detection, and discloses an automobile exhaust pipe air tightness detection tool which comprises a sealing unit, an air pump connected with the sealing unit, a travel amplifying member connected with the air pump and a connecting unit arranged between the two sealing units, wherein the air pump is used for enabling air pressure in an exhaust pipe to change, the travel amplifying member is used for amplifying the air pressure in the air pump to change so as to generate a corresponding result, when the air pressure in the exhaust pipe changes due to the air pressure change in the air pump on one side, the air pressure change of the air pump on the other side is amplified by the travel amplifying member through the arrangement of the travel amplifying member, the amplification means that differentiation between the two air pumps is amplified at the same time, so that a detection structure is more intuitively and clearly observed by a detector, and meanwhile, the two groups of sealing units play a good interaction role through the connecting unit so as to offset the influence caused by the air flow change caused by the air pressure change in the exhaust pipe.
Description
Technical Field
The utility model relates to the field of automobile detection, in particular to the field of exhaust pipe detection, and particularly relates to the field of exhaust pipe air tightness detection.
Background
The utility model discloses an automobile exhaust pipe detects airtight detection utensil, it is through controlling the air feed sequence of external gas in pneumatic profiling telescopic mechanism pneumatic cylinder department, can drive the pneumatic rod and remove in sealing jig's inside, make sealing jig's atmospheric pressure change, can be through observing whether the pneumatic profiling telescopic mechanism of opposite side can change thereupon at this moment, if the pneumatic profiling telescopic mechanism of left and right sides can remove simultaneously, can guarantee that the leakproofness of blast pipe is good, the problem of the result of being inconvenient for directly perceivedly expressing its detection in the gas tightness testing process of current blast pipe has been solved, but it has some defects: 1. in the process of driving one pneumatic profiling telescopic mechanism to observe whether the other pneumatic profiling telescopic mechanism synchronously moves or not, because the inside of the exhaust pipe is in a positive pressure state, in the process, compared with the state that the inside of the exhaust pipe is in a static positive pressure state in the prior art, positive pressure air in the exhaust pipe in a comparison file moves towards the other pneumatic profiling telescopic mechanism, so that the sealing clamp on the other side is subjected to additional acting force except the positive pressure, the additional acting force is derived from thrust caused by continuously moving air, and the sealing performance between the sealing clamp and the exhaust pipe is influenced; 2. the pneumatic profiling telescopic mechanism essentially drives the piston to move through the air cylinder, then whether the piston in the pneumatic profiling telescopic mechanism on the other side synchronously moves is observed, but even if the piston moving distance between the two groups of pneumatic profiling telescopic mechanisms is different due to the unqualified air tightness of the exhaust pipe, the difference is small, and the piston moving distance is difficult to observe through naked eyes.
Based on the comparison document, the utility model provides an automobile exhaust pipe air tightness detection tool.
Disclosure of Invention
In order to solve the problems mentioned in the background, the utility model provides an air tightness detection tool for detecting the air tightness of an automobile exhaust pipe.
In order to achieve the technical purpose, the technical scheme adopted by the utility model is as follows.
The utility model provides a car blast pipe detects gas tightness gauge, its includes the air pump that is used for shutoff blast pipe orificial sealing unit, is connected with sealing unit, the stroke that is connected with the air pump enlarge the component and set up the connecting unit between two sealing units, and the air pump is used for making the atmospheric pressure in the blast pipe change, and the stroke enlarges the component and is used for enlarging the air pump and receive the atmospheric pressure in the blast pipe change and produce corresponding result, and the connecting unit is used for being connected between two sealing units.
Further, the sealing unit comprises a sealing main body, one end of the sealing main body is provided with a shackle, the other end of the sealing main body is coaxially provided with a screw rod, the end part of the sealing main body, which is provided with the screw rod, is also coaxially extended to the periphery to form a convex edge, a nut is arranged on the external thread of the screw rod, a pressure plate is arranged between the nut and the sealing main body, and an air hole penetrating through the sealing main body and the axial length of the screw rod is further formed in the screw rod.
Further, the connecting unit comprises a cylinder shell and a spool rotatably installed in the cylinder shell, a coil spring is arranged at the installation position of the spool, a connecting rope is wound outside the spool, the free end of the connecting rope extends out of the cylinder shell, and hooks are arranged at the free end of the connecting rope and the outer wall of the cylinder shell.
Further, the hook is of a buckling structure.
Further, the connection unit includes a hook spring detachably disposed between the two hooks and loops.
Further, the stroke amplifying component comprises a first rack and a second rack which are parallel to each other, the first rack is connected with the output end of a piston rod in the air pump, the first rack and the second rack are in power connection through a gear set, and the transmission ratio of the gear set is smaller than one.
Further, the stroke amplifying component also comprises a graduated scale close to the second rack.
Compared with the prior art, the utility model has the beneficial effects that:
in the scheme, when the air pressure in the exhaust pipe is changed by the air pump at one side through the arrangement of the stroke amplifying component, the air pressure change of the air pump at the other side is amplified by the stroke amplifying component, the amplification means that the differentiation between the two air pumps is amplified at the same time, so that a detection person can observe a detection structure more intuitively and clearly, the problems that in the background art, in a comparison document, even if the air tightness of the exhaust pipe is unqualified, the piston movement distance between two groups of pneumatic profiling telescopic mechanisms is different, the difference is small, and the problem that the difference is difficult to observe by naked eyes is solved;
in this scheme, connect through connecting unit between two sets of sealing unit, if the trend of retreating takes place for a set of sealing unit, then another set of sealing unit is pulling it through connecting unit, hinder the back, and because protruding existence along, another set of sealing unit also can not pass through the transition and pack into in the blast pipe, two sets of sealing unit play good mutual group's effect through connecting unit, offset the influence that the air current that the air pressure in the blast pipe changes and leads to changes and produce, the problem that the air current that the air pressure in the blast pipe changes and produce leads to sealing clamp and blast pipe to receive the influence in the background art has been mentioned in the comparison document.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of two sets of sealing units and connecting units;
FIG. 3 is a schematic illustration of a spool and connecting cord;
FIG. 4 is an exploded view of the sealing unit;
fig. 5 is a schematic view of the stroke amplifying member.
The reference numerals in the drawings are:
1. an exhaust pipe; 2. a sealing unit; 201. a sealing body; 202. a convex edge; 203. a screw; 204. a shackle; 205. a pressure plate; 206. a nut; 207. air holes; 3. an air pump; 4. a stroke amplifying member; 401. a first rack; 402. a second rack; 403. a gear set; 5. a cartridge housing; 501. a hook; 502. a connecting rope; 503. a spool.
Detailed Description
In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1-5, an automobile exhaust pipe detection air tightness detection tool comprises a sealing unit 2, an air pump 3 connected with the sealing unit 2, a stroke amplifying member 4 connected with the air pump 3 and a connecting unit arranged between the two sealing units 2, wherein the sealing unit 2 is used for plugging a pipe orifice of an exhaust pipe 1, the sealing unit 2 is correspondingly provided with two groups, the air pump 3 is used for changing air pressure in the exhaust pipe 1, a detection result is intuitively expressed by observing air pressure change of the air pump 3 at the other side, meanwhile, the air pressure change of the air pump 3 at the other side is amplified by the stroke amplifying member 4, so that the detection result is clearer, and meanwhile, because the two sealing units 2 are connected through the connecting unit, air flow change caused by air pressure change in the exhaust pipe 1 cannot influence the tightness of the sealing unit 2.
Specifically, as shown in fig. 4, the sealing unit 2 includes a sealing main body 201, for example, a sealing plug, one end of the sealing main body 201 is provided with a shackle 204, the other end is coaxially provided with a screw 203, the end of the sealing main body 201 provided with the screw 203 is further coaxially extended to the periphery to form a convex edge 202, a nut 206 is mounted on the external thread of the screw 203, a pressure plate 205 is provided between the nut 206 and the sealing main body 201, and an air hole 207 penetrating through the axial lengths of the sealing main body 201 and the screw 203 is further formed in the screw 203.
When the sealing device is used, the sealing main body 201 is plugged into the pipe orifice of the exhaust pipe 1 to realize sealing, meanwhile, the convex edge 202 is contacted with the end face of the pipe orifice of the exhaust pipe, then the nut 206 is screwed, the pressing plate 205 is pushed by the nut 206 to move, the pressing plate 205 presses the convex edge 202, so that the convex edge 202 is tightly attached to the pipe orifice of the exhaust pipe, and the sealing performance of the sealing unit 2 to the pipe orifice of the exhaust pipe 1 is further improved.
Specifically, as shown in fig. 2 and 3, one of them:
the connecting unit comprises a cylinder shell 5 and a spool 503 rotatably installed in the cylinder shell 5, a coil spring is arranged at the installation position, a connecting rope 502 is wound outside the spool 503, the free end of the connecting rope 502 extends out of the cylinder shell 5, and hooks 501 are arranged at the free end of the connecting rope 502 and the outer wall of the cylinder shell 5.
When the automobile exhaust pipe is used, the hook 501 is matched with the hook 204 to realize connection between the connection unit and one group of sealing units 2, the connection unit is integrally plugged into the exhaust pipe 1, the pipe orifice of the exhaust pipe 1 is plugged by the sealing units 2, then the exhaust pipe is erected or inclined to enable the other hook 204 to be close to the other pipe orifice of the exhaust pipe 1, as the pipe orifice of the automobile exhaust pipe is thicker, a detector can easily stretch out to insert fingers into the exhaust pipe orifice, the hook 204 is pulled out near the pipe orifice, the spool 503 is payed out, the coil spring is compressed, then the hook 204 is connected with the other group of sealing units 2, the other group of sealing units 2 is plugged into the other pipe orifice of the exhaust pipe 1, meanwhile, the coil spring releases the elastic force, the spool 503 is wound up, the connection rope 502 is tightly stretched, the plugging of the exhaust pipe 1 is completed, and the two groups of sealing units 2 are connected by the connection unit, at the moment, if a retreating trend occurs, the other group of sealing units 2 is pulled by the connection unit, the retreating is blocked, and the other group of sealing units 2 cannot be transitionally plugged into the exhaust pipe 1 due to the existence of the convex edge 202, and the air flow is well influenced by the mutual influence of the two groups of sealing units 2, and the air flow is well influenced and the change is counteracted.
It should be noted that in the above-mentioned process, in the initial state, the connection cord 502 is only partially wound around the spool 503, and most of it is outside the cartridge case 5, so that the inclined exhaust pipe 1 is close to the other pipe orifice of the exhaust pipe 1 under the gravity action of the hook 501 provided at the free end of the connection cord 502, and the detection personnel can easily take out, and in addition, the spool 503 and the coil spring are provided to have the purpose that the coil spring synchronously releases the elastic force after the other pipe orifice of the exhaust pipe 1 is closed by the other group of sealing units 2, so that the connection cord 502 is tightened.
In the above process, the hook 501 may be a hook in the prior art, in the sense that after the hook 501 hooks the hook ring 204, a closed loop is formed, and the unhooking problem does not occur.
And two,: the connection unit may also be a hook spring.
Specifically, as shown in fig. 1, the air pump 3 comprises a pump shell, a pump cover is mounted at the opening end of the pump shell, a nozzle communicated with the screw 203 is arranged on the pump cover, a piston is arranged in the air pump 3, the end surface of the piston extends to form a piston rod, the output end of the piston rod extends out of the pump shell, two groups of through holes are formed in the outer circular surface of the pump shell, the two groups of through holes are respectively close to two ends of the pump shell, and a spring is arranged between the piston and the pump cover; by injecting air into the pump housing in the prior art, the piston is moved close to the pump cover, and then the piston in the other air pump 3 should be moved away from the pump cover by positive pressure air in the exhaust pipe 1 as a transmission medium.
Specifically, as shown in fig. 5, the stroke amplifying member 4 includes two racks: the first rack 401 and the second rack 402 are parallel to each other and are connected with the output end of a piston rod in the air pump 3, the first rack and the second rack are in power connection through the gear set 403, the transmission ratio of the gear set 403 is smaller than one, so that when one air pump 3 is started, the movement of the piston and the piston rod in the other air pump 3 brings the first rack 401 to move, the first rack 401 moves to drive the second rack 402 to move through the gear set 403, and the movement distance of the second rack 402 is larger than the movement distance of the piston rod because of the speed increase of the gear set 403, the relation between the first rack and the second rack depends on the transmission ratio of the gear set 403, for example, the transmission ratio is 0.5, the movement distance of the second rack 402 is twice that of the piston rod, based on the transmission ratio, when one air pump 3 is moved, the movement distance of the other air pump 3 is amplified, namely, the difference of the movement distances between the two air pumps 3 is also synchronously amplified, and the detection personnel can observe conveniently.
In a preferred embodiment, a scale can be arranged near the second rack 402, and the moving distance of the second rack 402 is read through the scale to assist the inspector in observation.
The present utility model is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.
Claims (7)
1. The utility model provides a utensil is examined to vehicle vent-pipe detection gas tightness, its includes sealing unit (2) that are used for shutoff blast pipe (1) orificial and air pump (3) that are connected with sealing unit (2), its characterized in that: the air pump is characterized by further comprising a travel amplifying component (4) connected with the air pump (3) and a connecting unit arranged between the two sealing units (2), wherein the air pump (3) is used for enabling the air pressure in the exhaust pipe (1) to change, the travel amplifying component (4) is used for amplifying the corresponding result generated when the air pump (3) receives the air pressure change in the exhaust pipe (1), and the connecting unit is used for connecting the two sealing units (2).
2. The vehicle exhaust pipe detection air tightness gauge according to claim 1, wherein: the sealing unit (2) comprises a sealing main body (201), a shackle (204) is arranged at one end of the sealing main body (201), a screw (203) is coaxially arranged at the other end of the sealing main body, a convex edge (202) is further coaxially arranged at the end part of the sealing main body (201), a nut (206) is arranged on the outer thread of the screw (203), a pressure plate (205) is arranged between the nut (206) and the sealing main body (201), and an air hole (207) penetrating through the axial lengths of the sealing main body (201) and the screw (203) is further formed in the screw (203).
3. The vehicle exhaust pipe detection air tightness gauge according to claim 2, wherein: the connecting unit comprises a cylinder shell (5) and a spool (503) rotatably installed in the cylinder shell (5), a coil spring is arranged at the installation position, a connecting rope (502) is wound outside the spool (503), the free end of the connecting rope (502) extends out of the cylinder shell (5), and hooks (501) are arranged at the free end of the connecting rope (502) and the outer wall of the cylinder shell (5).
4. The vehicle exhaust pipe detection air tightness gauge according to claim 3, wherein: the hook (501) is a buckle structure.
5. The vehicle exhaust pipe detection air tightness gauge according to claim 2, wherein: the connection unit comprises a hook spring detachably arranged between the two shackles (204).
6. The vehicle exhaust pipe detection air tightness gauge according to claim 1, wherein: the stroke amplifying component (4) comprises a first rack (401) and a second rack (402) which are parallel to each other, the first rack (401) is connected with the output end of a piston rod in the air pump (3), the first rack (401) and the second rack (402) are in power connection through a gear set (403), and the transmission ratio of the gear set (403) is smaller than one.
7. The vehicle exhaust pipe detection air tightness gauge according to claim 6, wherein: the stroke amplifying component (4) also comprises a graduated scale close to the second rack (402).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223268866.XU CN218973766U (en) | 2022-12-07 | 2022-12-07 | Automobile exhaust pipe detection air tightness gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223268866.XU CN218973766U (en) | 2022-12-07 | 2022-12-07 | Automobile exhaust pipe detection air tightness gauge |
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| Publication Number | Publication Date |
|---|---|
| CN218973766U true CN218973766U (en) | 2023-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223268866.XU Active CN218973766U (en) | 2022-12-07 | 2022-12-07 | Automobile exhaust pipe detection air tightness gauge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117968985B (en) * | 2024-03-26 | 2024-05-28 | 常州市金坛鸿图橡塑制品有限公司 | Rubber tube continuous air tightness detection device |
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2022
- 2022-12-07 CN CN202223268866.XU patent/CN218973766U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117968985B (en) * | 2024-03-26 | 2024-05-28 | 常州市金坛鸿图橡塑制品有限公司 | Rubber tube continuous air tightness detection device |
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