CN212007680U

CN212007680U - Air tightness detection device

Info

Publication number: CN212007680U
Application number: CN202020583389.8U
Authority: CN
Inventors: 成虎
Original assignee: Tianjin Gaoyu Metal Products Co ltd
Current assignee: Tianjin Gaoyu Metal Products Co ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-11-24
Anticipated expiration: 2030-04-16

Abstract

The utility model discloses an air tightness detection device, which relates to the technical field of bicycle part auxiliary processing, comprising a case, a mounting frame is arranged on the case in a lifting way, a detection head is fixedly arranged on the mounting frame, a detection air pump is fixedly arranged on the mounting frame, the air outlet of the detection air pump is communicated with the detection head, and a pressure sensor is arranged at the joint of the detection air pump and the detection head; the clamping box is arranged on the mounting frame under the detection head, the two clamping blocks are arranged in the clamping box in a sliding mode, the driving assembly for driving the clamping blocks to move relatively is further arranged in the clamping box, and the water storage tank is arranged under the case and the mounting frame. The utility model discloses a two kinds of modes are treated the gas tightness that detects the piece and are carried out the while and detect, have improved the detection precision, treat to detect that the piece has good gas tightness detection effect to one end opening other end confined.

Description

Air tightness detection device

Technical Field

The utility model relates to a bicycle part auxiliary machining technical field especially relates to an air tightness detection device.

Background

Bicycle parts are mostly composed of pipe fittings, wherein the pipe fittings with one open end and one closed end, such as a stroke pipe and an oil seal, are mainly applied to a sealing environment, have higher sealing performance requirements, and can cause potential safety hazards due to slight leakage. Therefore, the airtightness detection is required to be carried out after the processing is finished in order to ensure the use safety.

At present, the air tightness detection mode is that a part to be detected is sealed and inflated and then is immersed in water to observe whether bubbles emerge or not, so that whether pressure leakage exists or not is detected. However, in this way, for a to-be-detected piece with low air leakage degree, the air bubble amount is small, the air bubble volume is small, the air bubble cannot quickly float out of the water surface, the detection effect is not ideal, and the space for improvement is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an air tightness detection device adopts two kinds of modes to treat the gas tightness of detecting the piece and detects simultaneously, has improved the detection precision, to one end opening other end confined wait to detect the piece and have good gas tightness detection effect.

The utility model discloses a can realize through following technical scheme: the air tightness detection device comprises a case, wherein a mounting frame is arranged on the case in a lifting manner, a detection head and a detection air pump are fixedly arranged on the mounting frame, an air outlet of the detection air pump is communicated with the detection head, and a pressure sensor is arranged at the joint of the detection air pump and the detection head; the detection device is characterized in that a clamping box is arranged on the mounting frame under the detection head, two clamping blocks are arranged in the clamping box in a sliding mode, a driving assembly for driving the clamping blocks to move relatively is further arranged in the clamping box, and a water storage tank is arranged under the case and the mounting frame.

By adopting the technical scheme, the opening of the piece to be detected extends into the detection head and is aligned with the air outlet of the detection air pump, and then the two clamping blocks are driven to move oppositely to clamp and fix the piece to be detected; wait to detect a fixed completion back, the mounting bracket moves down, will wait to detect a lower tip immersion water, detect the air pump and send into gas and wait to detect inside the piece, keep a period of time after, whether there is a large amount of bubbles in the observation basin to whether there is the gas leakage phenomenon according to the pressure registration of pressure sensor detection. The utility model discloses a two kinds of modes are treated the gas tightness that detects the piece and are carried out the while and detect, have improved the detection precision, treat to detect that the piece has good gas tightness detection effect to one end opening other end confined.

Further setting the following steps: drive assembly including set firmly in the inside baffle of centre gripping box, the baffle is close to mounting bracket one end has set firmly the centre gripping cylinder, the piston rod of centre gripping cylinder runs through the baffle just wears out baffle one end has set firmly drives the piece, the baffle is kept away from mounting bracket one side articulates there are two connecting rods, the connecting rod is kept away from the articulated actuating lever that is connected with of baffle one end, drive the piece and go up vertical rotation and wear to be equipped with the drive shaft, the actuating lever with the equal coaxial fixed connection of centre gripping piece in the drive shaft.

Through adopting above-mentioned technical scheme, the actuating lever receives the drive of connecting rod to keeping away from the motion of mounting bracket direction, and in the motion process, the actuating lever deflects, and two rotate around the actuating lever with the coaxial fixed articulated grip block of actuating lever respectively, and two grip blocks are in the drive of centre gripping cylinder reverse motion down, will wait to detect that a piece is fixed in appointed detection position.

Further setting the following steps: two vertical guide rails are arranged on one side of the case, the mounting frame is movably clamped on the two guide rails, an adjusting screw rod is further rotatably arranged on the case, the adjusting screw rod vertically penetrates through the mounting frame and is in threaded connection with the mounting frame, and a driving motor for driving the adjusting screw rod to rotate is fixedly arranged on the case.

Through adopting above-mentioned technical scheme, utilize driving motor drive accommodate the lead screw to rotate, can drive the mounting bracket along guide rail length direction motion, will press from both sides the dress and be fixed in waiting that detect the position the lower tip stretch into the basin, realize that multiple mode treats the gas tightness of detecting the piece and detect.

Further setting the following steps: detect the inside cavity of head, the gas outlet that detects the air pump runs through and stretches into detect inside the head, and stretch into detect inside one end week of head and encircle and be equipped with the rubber packing ring, the intercommunication has been seted up at rubber packing ring middle part detect the air supply mouth of air pump gas outlet, the air supply mouth is kept away from detect air pump gas outlet one end diameter and be less than and be close to detect air pump gas outlet one end diameter.

By adopting the technical scheme, the upper end part of the piece to be detected extends into the air supply port of the rubber gasket, the air outlet of the detection air pump is communicated with the piece to be detected through the air supply port, and the rubber gasket plays a role in connection and sealing to prevent air leakage from influencing the detection effect; the diameter of the end, far away from the air outlet of the detection air pump, of the air supply port is smaller than that of the end, far away from the air outlet of the detection air pump, of the air supply port, so that the sealing effect of the rubber gasket can be remarkably improved, and the subsequent detection can be favorably and smoothly carried out.

Further setting the following steps: and a check valve which only allows air to pass through in a one-way mode is arranged at an air outlet of the detection air pump.

Through adopting above-mentioned technical scheme, prevent to send into by detecting the air pump and wait that the inside gas of detecting the piece takes place the refluence, reduces and waits the inside gas pressure of piece, influences gas tightness detection effect.

Further setting the following steps: two grating sensors are fixedly arranged on one side, away from the mounting frame, of the case, and the grating sensors and the fixing boxes are located on the same horizontal line.

Through adopting above-mentioned technical scheme, the manual work will wait to detect the piece and arrange in after detecting the position, press from both sides tight location to it through the grip block, before the mounting bracket downstream, two grating sensors that set up relatively detect, when the object is located between two grating sensors, stop the motion of mounting bracket, avoid still when the case is inside the operation workman that the mounting bracket downstream causes the injury to the workman.

Further setting the following steps: the machine case is fixedly provided with a plurality of warning lamps, and the warning lamps are electrically connected with the pressure sensors.

Through adopting above-mentioned technical scheme, it is fixed to waiting to detect the inside gas filled pressure value of air pump at every turn, and after the difference exceeded a certain numerical value between the pressure value that pressure sensor read out and rated pressure, the warning light lights, judges that should wait to detect a gas leakage.

To sum up, the utility model discloses a beneficial technological effect does:

(1) the utility model discloses a two kinds of modes are treated the gas tightness that detects the piece and are carried out the while and detect, have improved the detection precision, treat to detect that the piece has good gas tightness detection effect to one end opening other end confined.

(2) The check valve and the sealing washer cooperate to seal between the air outlet of the detection air pump and the pipe fitting to be detected, so that the air leakage of the device is prevented from influencing the detection of the air pressure by the subsequent pressure sensor, and the judgment of air tightness detection is misled.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a front view of the present invention;

3 FIG. 3 3 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 3 2 3; 3

Fig. 4 is a top view of the present invention;

fig. 5 is a partially enlarged view of a portion B in fig. 2.

Reference numerals: 1. a chassis; 2. a mounting frame; 3. a detection head; 4. detecting the air pump; 5. a clamping box; 6. a clamping block; 7. a pressure sensor; 8. a water storage tank; 9. a partition plate; 10. a clamping cylinder; 11. a drive block; 12. a connecting rod; 13. a drive rod; 14. a drive shaft; 15. a guide rail; 16. adjusting the screw rod; 17. a drive motor; 18. a rubber gasket; 19. an air supply port; 20. a one-way valve; 21. a grating sensor; 22. a warning light.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1 and 5, for the utility model discloses an air tightness detection device, including quick-witted case 1, the ascending and descending of quick-witted case 1 is provided with mounting bracket 2, and mounting bracket 2 is down "L" type structure, and the fixed detection head 3 that is provided with on

mounting bracket

2, 2 up ends of mounting bracket set firmly the gas outlet and detect the detection air pump 4 of first 3 intercommunications. The horizontal fixing has centre gripping box 5 under detecting head 3 on mounting bracket 2, and centre gripping box 5 is inside to slide and is provided with two grip blocks 6, and the inside drive assembly who drives 6 relative motion of grip block that still is provided with of centre gripping box 5 through the reverse motion of two grip blocks 6, is located and must wait to detect between two grip blocks 6 and presss from both sides tightly fixedly. The joint of the air outlet of the detection air pump 4 and the detection head 3 is provided with a pressure sensor 7 for measuring the air pressure, and the pressure sensor is used for measuring whether the internal air pressure of the piece to be detected is consistent with the input rated air pressure or not, so that whether the air tightness problem exists in the piece to be detected is judged. A water storage tank 8 is arranged under the case 1 and the mounting rack 2, and soap water with good foaming performance is contained in the water storage tank 8. Wait to detect a fixed back of accomplishing, mounting bracket 2 moves down, will wait to detect a lower tip immersion water, detect inside air pump 4 sends into gas and waits to detect a, keeps a period of time after, observes whether have a large amount of bubbles in the basin, further judges that should wait to detect whether there is the gas tightness problem. The air tightness of the piece to be detected is detected simultaneously by adopting two modes, so that the detection precision is improved, and the piece to be detected with one open end and the other closed end has a good air tightness detection effect.

Referring to fig. 2 and 3, the clamping fixation of the to-be-detected piece is treated by two clamping blocks 6 through the realization of a driving assembly, the driving assembly comprises a partition board 9 fixedly arranged inside a clamping box 5, one end, close to an installation frame 2, of the partition board 9 is fixedly provided with a clamping cylinder 10, a piston rod of the clamping cylinder 10 penetrates through the partition board 9 and penetrates out one end of the partition board 9 to be fixedly provided with a driving block 11, the partition board 9 is far away from one side of the installation frame 2 and is hinged with two connecting rods 12, and the two connecting rods 12 are respectively positioned on. The connecting rod 12 is far away from the articulated actuating lever 13 that is connected with of baffle 9 one end, and drive shaft 14 is worn to be equipped with in the vertical rotation on the drive block 11, and actuating lever 13 and the equal coaxial fixed connection of grip block 6 are in drive shaft 14, are the crossing setting between actuating lever 13 and the drive block 11. The clamping cylinder 10 pushes the driving block 11 to move towards one side far away from the mounting frame 2, the connecting rod 12 is driven to swing, the length direction of the connecting rod is gradually parallel to a piston rod of the clamping cylinder 10, the driving rod 13 hinged to the connecting rod 12 deflects under the driving of the driving rod, and therefore the clamping block 6 coaxially fixed on the driving shaft 14 is driven to swing, the two clamping blocks 6 swing oppositely at the same time, and a piece to be detected is clamped and fixed.

Referring to fig. 1 and 4, two vertical guide rails 15 are arranged on one side of a case 1, an installation frame 2 is movably clamped on the two guide rails 15, an adjusting screw rod 16 is further rotatably arranged on the case 1, the adjusting screw rod 16 vertically penetrates through the installation frame 2 and is in threaded connection with the installation frame, and a driving motor 17 for driving the adjusting screw rod 16 to rotate is fixedly arranged on the case 1. The driving motor 17 is used for driving the adjusting screw rod 16 to rotate, so that the mounting frame 2 can be driven to move along the length direction of the guide rail 15, the lower end part of the to-be-detected piece clamped and fixed at the detection position extends into the water tank, and the air tightness of the to-be-detected piece can be detected in various modes.

Referring to fig. 1 and 5, the gas outlet of the detection air pump 4 penetrates and extends into the detection head 3, a rubber gasket 18 is wrapped around the periphery of one end extending into the detection head 3, and the middle of the rubber gasket 18 is provided with a gas supply port 19 communicated with the gas outlet of the detection air pump 4. The upper end of the piece to be detected extends into the air supply opening 19 of the rubber gasket 18, the air outlet of the detection air pump 4 is communicated with the piece to be detected through the air supply opening 19, and the rubber gasket 18 plays a role in connection and sealing, so that the detection effect is prevented from being influenced by air leakage. The diameter of the end of the air supply port 19 far away from the air outlet of the detection air pump 4 is smaller than that of the end close to the air outlet of the detection air pump 4, so that the sealing effect of the rubber gasket 18 can be further improved, and the subsequent detection can be smoothly carried out. The air outlet of the detection air pump 4 is provided with a check valve 20 which only allows air to pass through in a one-way mode, so that air is prevented from flowing backwards into the detection air pump 4 from the interior of the detection piece, the air pressure in the detection piece is reduced, and the air tightness detection effect is influenced.

Referring to fig. 1, machine case 1 is kept away from mounting bracket 2 one side and is set firmly two grating sensor 21, and grating sensor 21 is located same water flat line with fixed box, and when mounting bracket 2 downstream, two grating sensor 21 detect whether have the object to block on mounting bracket 2 direction of motion, if have the obstacle then cut off driving motor 17's power immediately, prevent mounting bracket 2 to continue downstream, cause the injury to the operation workman. A plurality of warning lamps 22 are fixedly arranged on the case 1, and the warning lamps 22 are electrically connected with the pressure sensor 7. The pressure value that detects air pump 4 and aerify to waiting to detect a piece inside at every turn is fixed, and after the pressure value that pressure sensor 7 read out and the difference between the rated pressure exceeded certain numerical value, warning light 22 lighted, judges that should wait to detect a gas leakage.

The utility model discloses a theory of operation and beneficial effect do: an opening of a piece to be detected extends into the detection head 3 and is communicated with an air outlet of the detection air pump 4 through a rubber gasket, and then the two clamping blocks 6 are driven to move oppositely to clamp and fix the piece to be detected; wait to detect a fixed completion back, mounting bracket 2 moves down, will wait to detect a lower tip immersion water, detect inside air pump 4 sends into gas and waits to detect a, keeps a period of time after, whether there is a large amount of bubbles in the observation basin to whether there is the gas leakage phenomenon according to the pressure registration judgement that pressure sensor 7 detected. The air tightness detection equipment adopts two modes to simultaneously detect the air tightness of the piece to be detected, improves the detection precision, and has good air tightness detection effect on the piece to be detected with one open end and the other closed end.

The above, only do the preferred embodiment of the present invention, not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. An air tightness detection device is characterized in that: the device comprises a case (1), wherein a mounting frame (2) is arranged on the case (1) in a lifting manner, a detection head (3) and a detection air pump (4) are fixedly arranged on the mounting frame (2), an air outlet of the detection air pump (4) is communicated with the detection head (3), and a pressure sensor (7) is arranged at the joint of the detection air pump (4) and the detection head (3); the improved water storage cabinet is characterized in that a clamping box (5) is arranged on the mounting rack (2) under the detection head (3), two clamping blocks (6) are arranged inside the clamping box (5) in a sliding mode, a driving component for driving the clamping blocks (6) to move relatively is further arranged inside the clamping box (5), and a water storage tank (8) is arranged under the mounting rack (2) and the machine case (1).

2. The airtightness detection apparatus according to claim 1, wherein: drive assembly including set firmly in inside baffle (9) of centre gripping box (5), baffle (9) are close to mounting bracket (2) one end has set firmly centre gripping cylinder (10), the piston rod of centre gripping cylinder (10) runs through baffle (9) and wear out baffle (9) one end has set firmly drives actuating block (11), keep away from baffle (9) mounting bracket (2) one side articulates there are two connecting rods (12), connecting rod (12) are kept away from baffle (9) one end is articulated to be connected with actuating lever (13), drive shaft (14) are worn to be equipped with in the vertical rotation on driving block (11), actuating lever (13) with the equal coaxial fixed connection of centre gripping piece (6) in drive shaft (14).

3. The airtightness detection apparatus according to claim 1, wherein: two vertical guide rails (15) have been seted up to quick-witted case (1) one side, mounting bracket (2) activity joint is in two on guide rail (15), it is provided with accommodate the lead screw (16) still to rotate on quick-witted case (1), accommodate the lead screw (16) is vertical to be run through mounting bracket (2) and rather than threaded connection, the drive has set firmly on quick-witted case (1) accommodate the lead screw (16) pivoted driving motor (17).

4. The airtightness detection apparatus according to claim 1, wherein: detect head (3) inside cavity, the gas outlet that detects air pump (4) runs through and stretches into detect inside head (3), and stretch into detect the inside one end all sides package of head (3) and be equipped with rubber packing ring (18), the intercommunication has been seted up at rubber packing ring (18) middle part detect air feed mouth (19) of air pump (4) gas outlet, air feed mouth (19) are kept away from detect air pump (4) gas outlet one end diameter is less than and is close to detect air pump (4) gas outlet one end diameter.

5. The airtightness detection apparatus according to claim 4, wherein: and a check valve (20) which only allows air to pass through in a one-way mode is arranged at an air outlet of the detection air pump (4).

6. The airtightness detection apparatus according to claim 1, wherein: case (1) is kept away from mounting bracket (2) one side has set firmly two grating sensor (21), grating sensor (21) with centre gripping box (5) are located same water flat line.

7. The airtightness detection apparatus according to claim 1, wherein: the machine case (1) is fixedly provided with a plurality of warning lamps (22), and the warning lamps (22) are electrically connected with the pressure sensor (7).