CN113504001A

CN113504001A - Air pressure detection device

Info

Publication number: CN113504001A
Application number: CN202110849207.6A
Authority: CN
Inventors: 刘飞; 李龙
Original assignee: ZF Transmissions Shanghai Co Ltd
Current assignee: ZF Transmissions Shanghai Co Ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2021-10-15

Abstract

The application discloses air pressure detection device, including casing, moving member and sealing member. The housing has opposite first and second ends and defines a movable chamber therebetween. The second end of the housing is provided with a stroke channel towards the direction far away from the first end. The moving member is arranged on the movable cavity in an oriented and movable mode. One end of the moving piece close to the second end penetrates through the stroke channel and forms a limiting part protruding out of the shell. The moving piece is provided with an air inlet channel penetrating through the limiting part and an air inlet communicated with the air inlet channel. The limiting part is provided with a first round table protruding out of the stroke channel along the radial direction, and a limiting groove is formed between the first round table and the shell. The sealing element is sleeved in the limiting groove in a mode of being capable of being converted between a relaxation state and an expansion state, and the sealing element is matched with the vent hole. The rapid sealing and unsealing of the vent hole can be realized through the movement of the moving piece, the operation is convenient, and the working efficiency is high.

Description

Air pressure detection device

Technical Field

The invention relates to the technical field of detection equipment, in particular to an air pressure detection device which is used for detecting air pressure in a vent hole.

Background

The air pressure detection, especially for the air pressure detection in the vent hole of the gearbox, generally adopts a sealing ring to seal the joint of the connecting joint, then uses a bolt to lock, and finally plugs the connecting joint with the sealing ring into the vent hole to detect the air pressure in the vent hole.

Because the output is huge, each gearbox needs repeated screwing and unscrewing to test the pressure condition in the vent hole, the workload is very large, the labor intensity is high, and the working efficiency is low.

Disclosure of Invention

One advantage of the present invention is to provide an air pressure detecting device, wherein a moving member capable of moving directionally is disposed in a housing, a limiting groove is formed between a first circular table of the moving member and the housing, a sealing member having a loose state and an expansion state is sleeved in the limiting groove, and the sealing member can be switched between the two states by the directional movement of the moving member, so as to complete the air pressure detection of an air vent.

One advantage of the present invention is to provide an air pressure detecting device, which can maintain the moving member in a state of tending to move toward the first end all the time by providing the elastic member, thereby ensuring that the sealing member can be in an expanded state all the time without applying an external force, and facilitating the detection of the air pressure of the vent hole.

One advantage of the present invention is to provide an air pressure detecting device, which can more conveniently control the movement of a moving member by rotating a handle to drive a cam structure to rotate so as to drive the moving member to move toward a second end.

One advantage of the present invention is to provide an air pressure detecting device, which is convenient to stably place at a vent to be detected by providing a circular truncated cone structure matched with the vent, thereby facilitating air pressure detection.

The invention also provides an air pressure detection device, wherein the movable piece capable of moving directionally is arranged in the shell, the limiting groove is formed between the first circular table of the shell and the limiting part of the movable piece, the sealing piece in a loose state and an expansion state is sleeved in the limiting groove, and the sealing piece can be switched between the two states through the directional movement of the movable piece, so that the air pressure detection of the vent hole is completed, the operation is convenient, the working efficiency is high, and the labor intensity can be greatly reduced.

An advantage of the present invention is to provide an air pressure detecting device, which can keep the moving member always in a state of tending to move toward the second end by providing the elastic member, thereby ensuring that the sealing member is always in an expanded state without applying an external force, and facilitating the detection of the air pressure of the vent hole.

The air pressure detection device has the advantages that the telescopic sealing sleeve is arranged, so that the air inlet tightness of the air pressure detection device can be ensured all the time in the moving process of the moving piece, and the air pressure of the vent hole can be conveniently detected.

To achieve at least one of the above advantages, the present invention provides an air pressure detecting device for detecting air pressure in a vent hole, wherein the air pressure detecting device includes:

the device comprises a shell, a first end and a second end, wherein the shell is provided with the first end and the second end which are opposite along the length direction, a movable cavity is formed between the first end and the second end, and the second end of the shell is provided with a stroke channel towards the direction far away from the first end;

a moving member, wherein the moving member is arranged in the movable cavity in a manner of being capable of directionally moving along the length direction, one end of the moving member, which is close to the second end, penetrates through the stroke channel and forms a limiting part protruding out of the shell, the moving member is provided with an air inlet channel penetrating through the limiting part along the length direction, the moving member is provided with an air inlet communicated with the air inlet channel, the limiting part is radially provided with a first circular table protruding out of the stroke channel, and a limiting groove is formed between the first circular table and the shell; and

and the sealing element is sleeved in the limiting groove in a mode of being capable of switching between a relaxed state and an expanded state, and the sealing element is matched with the vent hole, so that the sealing element is driven to switch between the relaxed state and the expanded state by changing the size of the limiting groove in the directional movement process of the moving element, and the vent hole is further unsealed or sealed.

According to an embodiment of the invention, the seal is implemented as a rubber seal.

According to an embodiment of the present invention, the moving member includes a first moving member, a second moving member, and an elastic member;

wherein the first moving member is disposed in the active cavity adjacent to the first end and is movable in an orientable manner along the length direction;

one end of the second moving piece, which is close to the first end, is fixedly connected with the first moving piece, one end of the second moving piece, which is far away from the first end, penetrates through the stroke channel and protrudes out of the shell, and the limiting part is formed at the end part of the second moving piece;

the elastic piece is arranged between the first moving piece and the inner wall of the movable cavity close to the second end in a compressed mode.

According to an embodiment of the present invention, the air pressure detecting device further includes a driving member, wherein the first moving member is connected to the driving end of the driving member in an orientable manner.

According to an embodiment of the present invention, the driving member is implemented as a handle, wherein the handle is hinged to the housing, and the driving end is formed at one end of the handle, and the handle is provided with a cam structure at the driving end, wherein the cam structure includes a protruding portion and a horizontal portion, so that when the handle is rotated to make the protruding portion rotate to face the first moving member, the first moving member can be driven to move towards the second end, and when the handle is rotated to make the horizontal portion rotate to face the first moving member, the handle is in clearance fit with the first moving member.

According to an embodiment of the present invention, the housing is provided with a circular truncated cone structure at the second end, wherein an outer diameter of the circular truncated cone structure is gradually reduced from the first end to the second end, and at least a portion of the circular truncated cone structure is matched with the vent hole.

According to an embodiment of the present invention, the air pressure detecting device further includes an air pipe joint, wherein the air pipe joint is disposed at the air inlet to communicate with the air inlet passage.

The present invention further provides an air pressure detecting device for detecting air pressure in a vent hole, wherein the air pressure detecting device includes:

the shell is provided with a first end and a second end which are opposite to each other along the length direction, a movable cavity is formed between the first end and the second end, the shell extends towards the direction far away from the first end at the second end to form a limiting structure, a first round table protruding out of the limiting structure is formed at one end of the limiting structure far away from the first end along the radial direction, and an air inlet channel is formed in the limiting structure along the length direction;

the moving piece is arranged in the movable cavity in a directionally movable manner along the length direction, an air inlet cavity communicated with the air inlet channel is arranged along the length direction, an air inlet communicated with the air inlet cavity is further arranged on the moving piece, a limiting part is formed at one end, close to the second end, of the moving piece, the limiting part is sleeved on the limiting structure, and a limiting groove is formed between the limiting part and the first round table; and

According to an embodiment of the present invention, the air pressure detecting device further includes an elastic member, wherein the elastic member is located in the movable cavity and is compressed between an inner wall of the movable cavity near the first end and the moving member.

According to an embodiment of the present invention, a retractable sealing sleeve is disposed in the air intake cavity of the moving member, wherein one end of the sealing sleeve is connected to the channel opening of the air intake channel, and the other end of the sealing sleeve is disposed around the inner wall of the air intake cavity, so as to achieve continuous communication between the air intake cavity, the sealing sleeve and the air intake channel.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description.

Drawings

Fig. 1 shows a schematic structural diagram of the air pressure detecting device of the present application.

Fig. 2 shows a cross-sectional view of the air pressure detecting device of the present application.

Fig. 3 shows a front cross-sectional view of the air pressure detecting device of the present application.

Detailed Description

The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the disclosure of the specification, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, which are merely for convenience in describing the invention and to simplify the 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 the terms are not to be construed as limiting the invention.

Referring to fig. 1 and 2, an air pressure detecting apparatus according to a preferred embodiment of the present invention will be described in detail below, wherein the air pressure detecting apparatus is used to detect air pressure in a vent hole, wherein the air pressure detecting apparatus includes a housing 10, a moving member 20, and a sealing member 30.

The housing 10 has a first end 101 and a second end 102 opposite to each other along the length direction, i.e. the vertical direction, and a movable cavity 103 is formed between the first end 101 and the second end 102, wherein the first end 101 is close to the top of the housing 10, and the second end 102 is close to the bottom of the housing 10. The second end 102 of the housing 10 is provided with a stroke channel 104 facing away from the first end 101, wherein preferably the stroke channel 104 is provided in the middle of the housing 10 and directly communicates with the movable chamber 103.

Moving member 20 is disposed in movable chamber 103 so as to be movable in an oriented manner along the longitudinal direction. In addition, one end of the moving element 20 close to the second end 102 penetrates through the stroke channel 104 and forms a limiting part 201 which protrudes downwards out of the housing 10. The moving part 20 is provided with an air inlet channel 202 penetrating through the limiting part 201 along the length direction, and the moving part 20 is provided with an air inlet 203 communicated with the air inlet channel 202. The limiting portion 201 is provided with a first round 2011 protruding out of the stroke channel 104 along the radial direction, and a limiting groove 105 is formed between the first round 2011 and the housing 10. Along with the ascending or descending of the moving member 20, the first round table 2011 is driven to ascend or descend relative to the housing 10, so that the limiting groove 105 is reduced or enlarged accordingly.

The sealing member 30 is disposed in the retaining groove 105 in a manner that can be switched between a relaxed state and an expanded state, and the sealing member 30 is engaged with the vent hole.

When the air pressure detection device detects the air pressure of the vent hole, firstly, the air pressure detection device is placed at the vent hole to be detected, so that the bottom of the shell 10 can be abutted against the opening part of the vent hole, and the limit groove 105 can be completely positioned in the range of the vent hole; then, the distance between the first round platform 2011 and the housing 10 is gradually reduced by the upward movement of the moving member 20, so that the limiting groove 105 is controlled to gradually contract, and the sealing member 30 arranged in the limiting groove 105 is gradually expanded by being pressed until the vent hole is completely sealed; finally, the air pressure of the vent hole and the sealing performance of the vent hole can be detected by exhausting air into the vent hole through the air inlet 203 and the air inlet channel 202.

After the detection is finished, the moving member 20 is controlled to move downward to gradually increase the distance between the first round platform 2011 and the housing 10, so that the limiting groove 105 is controlled to gradually expand, the external force pressing the sealing member 30 disappears along with the expansion of the limiting groove 105, and the sealing member 30 gradually returns to a loose state along with the external force, so that the sealing member 30 which originally expands in the vent hole to seal the vent hole releases the sealing of the vent hole. At this time, the air pressure detection device can be easily taken out of the vent hole.

Therefore, the air pressure detection device provided by the invention can rapidly complete the sealing of the vent hole or remove the sealing of the vent hole by changing the size of the limit groove 105 to drive the sealing element 30 to switch between the expansion state and the relaxation state in the directional movement process of the moving element 20. The automatic feeding device is convenient to operate and low in cost, and can greatly reduce the labor intensity of workers and improve the working efficiency.

In the process of controlling the expansion of the sealing member 30 to seal the vent hole or releasing the seal of the vent hole by loosening or controlling the expansion of the sealing member 30 through the directional movement of the moving member 20, the space of the stopper groove 105 may be reduced by the ascending of the moving member 20, so that the sealing member 30 is gradually expanded to complete the sealing of the vent hole, or the space of the stopper groove 105 may be reduced by the descending of the moving member 20, so that the sealing member 30 is gradually expanded to complete the sealing of the vent hole. The specific structure and manner of movement of the latter will be described later.

As a preferred embodiment of the present invention, the sealing member 30 is implemented as a rubber sealing ring. By the characteristics of the rubber sealing ring, the air hole is expanded or loosened along with the size of the space of the limiting groove 105, so that the air hole is filled and sealed or unsealed. It should be noted that other structures or materials similar to the rubber seal ring can be easily found by those skilled in the art to perform the same function. It is also clear that the protection scope of the present application.

It is considered that in the process of performing the air pressure detection on the vent hole, the air pressure detection needs to be maintained for a certain time to complete the air pressure detection when the seal member 30 seals the vent hole. For further convenience of operation, as a preferred embodiment of the present invention, the moving member 20 includes a first moving member 204, a second moving member 205 and an elastic member 206;

wherein said first displacement member 204 is disposed adjacent to said first end 101 and is directionally movable along said length direction within said active cavity 103;

one end of the second moving part 205 close to the first end 101 is fixedly connected to the first moving part 204, so as to be driven by the first moving part 204 to move synchronously. The end of the second moving part 205 away from the first end 101 extends through the stroke channel 104 and protrudes out of the housing 10. The limiting part 201 is formed at the end of the second moving part 205;

wherein said elastic member 206 is compressed and arranged between said first displacement member 204 and the inner wall of said active cavity 103 near said second end 102.

Specifically, since the elastic member 206 is kept in a compressed state and has a rebound force which continuously rebounds, the first moving member 204 is continuously pushed upward, so that the limiting groove 105 is kept in a state of tending to shrink, and the sealing member 30 is kept in a state of tending to expand, thereby sealing the vent hole well. In this case, the pressure detection can be performed very conveniently without requiring additional manual control for sealing the vent hole. Only when the external force applied to the top of the first moving part 204 overcomes the resilience of the elastic member 206, the first moving part 204 is forced to descend, so that the limiting groove 105 is forced to expand by the second moving part 205, and the sealing member 30 is driven to return to the relaxed state. At this time, the air pressure detection device can be very conveniently taken out of the vent hole.

As a preferred embodiment of the present invention, the air pressure detecting device further includes a driving member 40, wherein the first moving member 204 is connected to the driving end 401 of the driving member 40 in an orientable manner, so that the driving member 40 can flexibly drive the first moving member 204 to correspondingly ascend or descend.

Preferably, the driving member 40 is implemented as a handle, wherein the handle is hinged to the housing 10 and forms the driving end 401 at one end where the handle is hinged. The handle is provided with a cam structure 402 at the driving end 401, wherein the cam structure 402 includes a protrusion 4021 and a horizontal portion 4022. When the handle is rotated, when the protrusion 4021 is rotated to face the first moving part 204, the protrusion 4021 can drive the first moving part 204 to move toward the second end 102, so as to drive the second moving part 205 to move downward, thereby expanding the space of the limiting groove 105, so that the sealing element 30 is in the relaxed state. In addition, when the horizontal portion 4022 is rotated to face the first moving member 204 by rotating the handle, the handle is in clearance fit with the first moving member 204, and the second moving member 205 is lifted together with the first moving member 204 by the repulsive force of the elastic member 206, so that the space of the stopper groove 105 is reduced, and the seal member 30 is in an expanded state. Through the pure mechanical driving mode, the moving element 20 is driven to ascend or descend, so that the operation is convenient, the maintenance and the repair are convenient, and the enterprise cost can be effectively reduced. In addition, the purely mechanical driving mode is more reliable and is not influenced by the performance of electric power, electronic equipment or other control elements.

It should be noted that the driving member 40 can also be configured as other automatic driving devices or manual devices to complete the driving of the moving member 20 according to specific needs.

Further preferably, the housing 10 is provided with a circular truncated cone structure 106 at the second end 102, wherein an outer diameter of the circular truncated cone structure 106 is gradually reduced from the first end 101 to the second end 102, and the circular truncated cone structure 106 is at least partially matched with the ventilation hole. When detecting the air pressure of the air vent, the circular truncated cone structure 106 of the air pressure detecting device may be directly and partially inserted into the air vent. The circular truncated cone structure 106 and the air vent are matched to enable the air pressure detection device to be used more stably, the air pressure detection device can be well guided to be installed on the air vent, the air pressure detection device can be installed quickly, meanwhile, the sealing element 30 can be guaranteed to expand along the radial direction perpendicular to the extending direction of the air vent, and the sealing performance is better.

More preferably, the air pressure detecting device further comprises an air pipe joint 50, wherein the air pipe joint 50 is disposed at the air inlet 203 to communicate with the air inlet channel 202, so that the air inlet is provided through the air pipe joint 50, and the quick connection of the air pressure detecting device with the external air source can be facilitated, wherein the air pipe joint 50 is preferably implemented as a plastic air pipe joint.

In addition, referring to fig. 3, the present invention further provides an air pressure detecting device, wherein the air pressure detecting device is used for detecting air pressure in a vent hole, wherein the air pressure detecting device comprises a housing 6, a moving member 7 and a sealing member 8.

The housing 6 has a first end 61 and a second end 62 opposite to each other along the length direction, i.e. the vertical direction, and a movable cavity 63 is formed between the first end 61 and the second end 62, wherein the first end 61 is close to the top of the housing 6, and the second end 62 is close to the bottom of the housing 6. The housing 6 extends from the second end 62 to a direction away from the first end 61 to form a limiting structure 64 protruding downward. A first truncated cone 642 protruding out of the limiting structure 64 is radially formed at one end of the limiting structure 64 away from the first end 61. In addition, the limiting structure 64 is further provided with an air inlet channel 641 along the length direction.

The moving member 7 is provided in the movable chamber 63 so as to be movable in the longitudinal direction, and an intake chamber 71 communicating with the intake passage 641 is provided in the longitudinal direction. The moving member 7 is further provided with an air inlet 72 communicating with the air inlet chamber 71 at a side portion thereof. The external air is supplied to the air intake chamber 71 through the air intake port 72, and further supplied to the vent hole through the air intake passage 641. A limiting portion 73 is formed at one end of the moving member 7 close to the second end 62. The limiting portion 73 is sleeved on the limiting structure 64, and forms a limiting groove 65 with the first truncated cone 642. As the moving member 7 moves up or down, the stopper 73 moves up or down, so that the stopper groove 65 is correspondingly enlarged or reduced.

It should be noted that, similar to the aforementioned principle that the moving member 20 ascends or descends to drive the corresponding reduction or expansion of the limiting groove 105, the second preferred embodiment of the present invention drives the corresponding expansion or reduction of the limiting groove 65 by controlling the moving member 7 to ascend or descend, wherein the limiting portion 73 is slidably sleeved on the limiting structure 64, a through hole for the limiting portion 73 to pass through is disposed at the bottom of the housing 6, and the limiting portion 73 is matched with the through hole, and can freely pass through the through hole while being sleeved on the limiting structure 64.

The sealing member 8 is disposed in the retaining groove 612 in a manner that can be switched between a relaxed state and an expanded state, and the sealing member 8 is engaged with the vent hole.

Specifically, when the moving member moves downward in a directional manner, the limiting portion 73 descends along the outer wall of the limiting structure 64 and gradually approaches the first truncated cone 642, so that the limiting groove 65 is reduced, the sealing member 8 gradually expands, and the vent hole is sealed. When the moving member 7 is positioned upward, the stopper portion 73 is raised along the stopper structure 64 and gradually separated from the first truncated cone 642, thereby expanding the stopper groove 65, and further loosening the sealing member 8 to release the sealing of the vent hole.

As a preferred embodiment of the present invention, the air pressure detecting device further includes an elastic member 9, wherein the elastic member 9 is located in the active cavity 63 and is compressed between the inner wall of the active cavity 63 close to the first end 61 and the moving member 7, so that the moving member 7 is kept in a state of tending to move downward by the elastic member 9, and the limiting groove 65 can be continuously compressed by the limiting portion 73, and the sealing member 8 is kept in a state of continuously expanding, so as to facilitate the detection of the air pressure of the vent hole.

Further preferably, the moving member 7 is provided with a retractable sealing sleeve 74 inside the air inlet cavity 71, wherein one end of the sealing sleeve 74 is connected to the channel opening of the air inlet channel 641, and the other end of the sealing sleeve 74 is disposed around the inner wall of the air inlet cavity 71, so as to achieve continuous communication between the air inlet cavity 71, the sealing sleeve 74 and the air inlet channel 641 in the moving process of the moving member 7, and avoid air leakage during air pressure detection.

It should be noted that the terms "first and second" in the present invention are used for descriptive purposes only, do not denote any order, are not to be construed as indicating or implying any relative importance, and are to be interpreted as names.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims

1. An air pressure detecting device for detecting air pressure in a vent hole, the air pressure detecting device comprising:

2. The air pressure detecting device as claimed in claim 1, wherein the sealing member is implemented as a rubber packing.

3. The air pressure detecting apparatus according to claim 2, wherein the moving member includes a first moving member, a second moving member, and an elastic member;

4. The apparatus of claim 3, further comprising an actuating member, wherein the first moving member is directionally movably coupled to the actuating end of the actuating member.

5. The apparatus according to claim 4, wherein the driving member is implemented as a handle, wherein the handle is hinged to the housing and forms the driving end at an end where the handle is hinged, the handle being provided with a cam structure at the driving end, wherein the cam structure includes a protrusion and a horizontal portion so as to urge the first moving member to move toward the second end when the handle is rotated so that the protrusion is rotated to face the first moving member, and so as to be in clearance fit with the first moving member when the handle is rotated so that the horizontal portion is rotated to face the first moving member.

6. The air pressure detecting device according to any of claims 1 to 5, wherein the housing is provided with a circular truncated cone structure at the second end, wherein an outer diameter of the circular truncated cone structure is gradually reduced from the first end to the second end, and the circular truncated cone structure is at least partially matched with the vent hole.

7. The air pressure detecting device according to claim 6, further comprising an air pipe joint, wherein the air pipe joint is provided to the air inlet to communicate with the air inlet passage.

8. An air pressure detecting device for detecting air pressure in a vent hole, the air pressure detecting device comprising:

9. The apparatus of claim 8, further comprising a resilient member, wherein the resilient member is disposed within the active cavity and is compressed between an inner wall of the active cavity proximate the first end and the moveable member.

10. The apparatus according to claim 9, wherein a retractable sealing sleeve is disposed in the air inlet chamber, wherein one end of the sealing sleeve is connected to the opening of the air inlet channel, and the other end of the sealing sleeve is disposed around the inner wall of the air inlet chamber, so as to achieve continuous communication between the air inlet chamber, the sealing sleeve and the air inlet channel.