Quick connecting pipe for sealing test of brake caliper

Abstract

A quick connecting pipe for a brake caliper sealing test relates to the technical field of quick connecting pipes and comprises an inserting shell, a side circular plate is arranged at a front through hole of the inserting shell, a rotary inserting pipe is rotatably arranged at the center of the side circular plate, and a fixed connecting pipe is fixedly arranged at a rear through hole of the inserting shell; a rotary circular ring is arranged on the rotary inserting pipe, a fixed circular ring is arranged on the fixed connecting pipe, a first gear is arranged on the rotary inserting pipe, a second gear is meshed with the side of the first gear, the second gear is fixedly arranged on a rotating shaft of the motor, a sliding base plate is arranged in the inserting shell, a sliding barrel is arranged on the sliding base plate in a sliding mode, and a first sealing circular ring and a second sealing circular ring are arranged on the two sides of the sliding barrel respectively. The end, away from the fixed circular ring, of the fixed connecting pipe is connected with a hose which is connected with an air seat. The thread of the rotary insertion pipe is aligned with the internal thread connector of the brake caliper, the motor drives the second gear to rotate, power is transmitted through the first gear, the rotary insertion pipe rotates on the side circular plate, namely, the rotary insertion pipe can be rapidly screwed into an inlet of the brake caliper, and a hose is prevented from being wound and knotted.

Description

Technical Field

[0001] The present invention relates to the technical field of quick-connect pipes, and more specifically, it relates to a quick-connect pipe for brake caliper seal testing. Background Art

[0002] The existing driving methods of brake calipers mainly include pneumatic driving and hydraulic driving. Among them, the interface of the pneumatically driven brake caliper usually presets an internal thread interface, and the matching connecting pipe adopts an external thread interface. By screwing the external thread interface of the connecting pipe into the internal thread interface of the brake caliper, the docking of the two can be achieved.

[0003] In the brake caliper seal performance test link, in order to improve the test efficiency, it is necessary to achieve the quick connection of the external thread of the connecting pipe and the internal thread of the brake caliper. However, since the external thread joints of the connecting pipe mostly adopt a fixed connection method, in actual operation, it often relies on manual screwing to achieve the docking of the two. This operation method not only has low efficiency, but also is extremely easy to cause the connecting pipe to be wound and knotted during the process of screwing in the joint, seriously affecting the test process and operation safety. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a quick-connect pipe for brake caliper seal testing.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions: A quick-connect pipe for brake caliper seal testing, including an insertion shell, the insertion shell is provided with a front through hole and a rear through hole, a side circular plate is provided at the front through hole of the insertion shell, a rotating insertion pipe is rotatably provided at the center of the side circular plate, and a fixed connection pipe coaxial with the rotating insertion pipe is fixedly provided at the rear through hole of the insertion shell; a rotating ring is provided at the end of the rotating insertion pipe facing the fixed connection pipe, a fixed ring is provided at the end of the fixed connection pipe facing the rotating insertion pipe, a first gear is provided on the rotating insertion pipe, a second gear is meshed beside the first gear, the second gear is fixedly provided on the rotating shaft of the motor, and the motor is fixedly provided on the inner side wall of the insertion shell; a sliding seat plate is provided inside the insertion shell, a sliding cylinder is slidably provided on the sliding seat plate, a first sealing ring and a second sealing ring are respectively provided on both sides of the sliding cylinder, a first sealing ring is provided on the first sealing ring and is in contact with the rotating ring, a second sealing ring is provided on the second sealing ring and is in contact with the fixed ring, and a limiting cover is provided on the side of the sliding cylinder facing the side circular plate; a hose is connected to the end of the fixed connection pipe away from the fixed ring, and an air seat is connected to the hose.

[0006] As a preferred technical solution of the present invention, two sliding rods are slidably provided on the side circular plate, a round table is provided at the end of the sliding rod facing the sliding cylinder, a pull rod coaxial with the sliding rod is provided on the round table, and the pull rod is slidably provided on the limiting cover, and a pull platform is provided at the end of the pull rod and inside the limiting cover.

[0007] As a preferred technical solution of the present invention, a retaining ring in contact with the side circular plate is provided in the middle of the sliding rod. A first spring is sleeved outside the sliding rod, and two ends of the first spring are respectively connected to the side circular plate and the frustum. A sliding ring is slidably arranged on the pull rod, and a second spring is sleeved outside the pull rod, and two ends of the second spring are respectively connected to the sliding ring and the limit cover.

[0008] As a preferred technical solution of the present invention, sliding rods are provided on the inner side wall of the socket shell and beside the two sliding rods. Sliding plates are slidably arranged on the sliding rods. A third spring is sleeved on the sliding rods, and two ends of the third spring are respectively connected to the sliding plate and the sliding rod. A wedge block is provided at one end of the sliding plate, and a dial rod in contact with the corresponding wedge block is provided on the frustum. A limit block is provided at the other end of the sliding plate, and a limit hole for the limit block to insert is opened on the limit cover.

[0009] As a preferred technical solution of the present invention, three connecting columns are provided on the fixed circular ring, and a middle sealing plate in contact with the second sealing ring is jointly provided at the ends of the three connecting columns. A sealing cover in contact with the fixed circular ring is provided on the end face of the sliding cylinder far away from the second sealing ring.

[0010] As a preferred technical solution of the present invention, a third sealing ring for contacting the middle sealing plate is provided on the second sealing ring, and a fourth sealing ring for contacting the fixed circular ring is provided on the sealing cover.

[0011] As a preferred technical solution of the present invention, a pressing block is provided on the outer side surface of the sealing cover, and an inclined surface is provided on the pressing block. A side hole is provided on the outer side wall of the socket shell, and a rotating seat is further provided on the outer side wall of the socket shell. A handle is rotatably arranged on the rotating seat. An arc-shaped sliding rod for driving the pressing block is provided below the handle. The center of the arc-shaped sliding rod coincides with the rotation center of the handle. The arc-shaped sliding rod extends into the interior of the socket shell from the side hole. An arc-shaped cylinder is sleeved outside the arc-shaped sliding rod. The arc-shaped cylinder is arranged on the outer side wall of the socket shell below. An arc-shaped spring is sleeved outside the arc-shaped sliding rod, and the arc-shaped spring is located inside the arc-shaped cylinder. Two ends of the arc-shaped spring are respectively connected to the outer side wall of the socket shell and the arc-shaped sliding rod.

[0012] As a preferred technical solution of the present invention, a square cavity is provided inside the rotary insertion tube. A blocking core is rotatably arranged in the square cavity, and the rotating shaft of the blocking core extends to the outside of the rotary insertion tube. The rotating shaft of the blocking core is fixedly connected to one end of the first connecting rod. The other end of the first connecting rod is hinged to one end of the second connecting rod. The other end of the second connecting rod is hinged to the semi-circular ring. The semi-circular rings are jointly connected to the two frustums.

[0013] The beneficial effects of the present invention compared with the prior art are as follows: (1) In the present invention, the thread of the rotary insertion tube is aligned with the internal thread interface of the brake caliper, and the motor is started. The motor drives the second gear to rotate, and the power is transmitted through the first gear, so that the rotary insertion tube rotates on the side circular plate, that is, the rotary insertion tube can be quickly screwed into the inlet of the brake caliper, and hose winding and knotting are avoided. During this process, the first sealing ring does not contact the rotary ring, and the first sealing ring also does not contact the rotary ring. Therefore, when the rotary insertion tube drives the rotary ring to rotate synchronously, the rotary ring does not contact the first sealing ring, avoiding wear of the first sealing ring.

[0014] (2) When the rotary insertion tube of the present invention is not screwed into the internal thread interface of the brake caliper, the second sealing ring contacts the middle sealing plate, and the third sealing ring is compressed, making the seal between the second sealing ring and the middle sealing plate tight; the sealing cover contacts the fixed ring, and the fourth sealing ring is compressed, making the seal between the sealing cover and the fixed ring tight. Therefore, the air flow in the fixed connection tube will be blocked, thus automatically closing the air flow in the fixed connection tube and avoiding waste.

[0015] (3) When the rotary insertion tube of the present invention is screwed into the internal thread interface of the brake caliper, the end of the sliding rod contacts the circular surface at the inlet of the brake caliper, causing the sliding rod to slide inward into the side circular plate. The sliding rod drives the frustum to move synchronously. The frustum contacts the sliding ring, and the second spring starts to be compressed; at the same time, the lever contacts the inclined surface of the wedge block, and the lever drives the wedge block and the sliding plate to move outward, that is, separating the limiting block from the limiting hole. The compressed second spring provides elastic force to drive the limiting cover and the sliding cylinder to automatically move to the right position instantaneously. After the sliding cylinder moves to the right position, that is, the first sealing ring contacts the rotary ring, and the second sealing ring contacts the fixed ring. The first sealing ring is compressed, making the seal between the first sealing ring and the rotary ring tight; the second sealing ring is compressed, making the seal between the second sealing ring and the fixed ring tight. Therefore, the air flow flows out from the middle hole of the fixed connection tube, then enters the interior of the rotary insertion tube through the inside of the sliding cylinder, and finally flows into the brake caliper.

[0016] (4) When the rotary insertion tube of the present invention is not screwed into the internal thread interface of the brake caliper, that is, the retaining ring on the sliding rod contacts the side circular plate, the sliding rod drives the frustum and the semi-circular ring to be in the left position. At this time, the plane of the retaining core is perpendicular to the axis of the rotary insertion tube, and the retaining core blocks the square cavity, preventing impurities from entering the interior of the insertion shell through the through hole of the rotary insertion tube; when the rotary insertion tube is screwed into the internal thread interface of the brake caliper, the semi-circular ring is in the right position, and power is transmitted through the second connecting rod and the first connecting rod, causing the retaining core to rotate by ninety degrees, that is, at this time, the side surface of the retaining core is parallel to the axis of the rotary insertion tube, and the air flow smoothly passes through the middle hole of the rotary insertion tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the whole of the present invention.

[0018] Figure 2 It is a schematic structural diagram of the present invention installed on the brake caliper.

[0019] Figure 3This is a schematic structural diagram of the overall plug housing of the present invention.

[0020] Figure 4 This is a schematic structural diagram of the internal cross-section of the plug housing when the sliding cylinder is displaced to the right position of the present invention.

[0021] Figure 5 This is a schematic structural diagram of the internal cross-section of the plug housing when the sliding cylinder is displaced to the left position of the present invention.

[0022] Figure 6 This is a schematic structural diagram of the front through-hole of the plug housing of the present invention.

[0023] Figure 7 This is a schematic structural diagram of the rear through-hole of the plug housing of the present invention.

[0024] Figure 8 This is a schematic structural diagram of the installation of the sliding seat plate of the present invention.

[0025] Figure 9 This is a schematic structural diagram of the inside of the sliding cylinder when the sliding cylinder is displaced to the right position of the present invention.

[0026] Figure 10 This is a schematic structural diagram of the inside of the sliding cylinder when the sliding cylinder is displaced to the left position of the present invention.

[0027] Figure 11 is Figure 9 a partial enlarged view of part A in

[0028] Figure 12 This is a schematic structural diagram of the installation of the sealing disc in the present invention.

[0029] Figure 13 This is a schematic structural diagram of the cooperation between the pressing block and the arc-shaped sliding rod of the present invention.

[0030] Figure 14 This is a schematic structural diagram of the present invention where the plane of the retaining core is parallel to the axis of the rotating insertion tube.

[0031] Figure 15 This is a schematic structural diagram of the present invention where the plane of the retaining core is perpendicular to the axis of the rotating insertion tube.

[0032] Reference numerals: 1 - insertion housing; 101 - front through - hole; 102 - rear through - hole; 103 - side hole; 2 - side circular plate; 3 - rotary insertion tube; 301 - square cavity; 4 - fixed connection tube; 5 - rotary ring; 6 - fixed ring; 7 - gear one; 8 - gear two; 9 - motor; 10 - sliding seat plate; 11 - sliding cylinder; 1101 - sealing ring one; 1102 - sealing ring two; 12 - sealing ring one; 13 - sealing ring two; 14 - limit cover; 1401 - limit hole; 15 - hose; 16 - air seat; 17 - sliding rod; 18 - frustum; 19 - pull rod; 20 - pull platform; 21 - retaining ring; 22 - spring one; 23 - spring two; 24 - sliding ring; 25 - sliding bar; 26 - sliding plate; 27 - spring three; 28 - wedge block; 29 - lever; 30 - limit block; 31 - connecting column; 32 - middle sealing plate; 33 - sealing cover; 34 - sealing ring three; 35 - sealing ring four; 36 - pressing block; 37 - rotating seat; 38 - handle; 39 - arc - shaped sliding rod; 40 - arc - shaped cylinder; 41 - arc - shaped spring; 42 - blocking core; 43 - connecting rod one; 44 - connecting rod two; 45 - semi - circular ring. Detailed implementation mode

[0033] In the present invention, unless otherwise stated, the orientations such as "upper, lower" are usually with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravitational directions; similarly, for the convenience of understanding and description, "left, right" are usually with respect to the left and right shown in the drawings; "inside, outside" refer to the inside and outside with respect to the contours of each component itself, but the above orientation terms are not used to limit the present invention.

[0034] Embodiment 1: Please refer to Figures 1 - 15 the structural schematic diagram. The present invention provides the following technical solutions: A quick - connection tube for brake caliper seal testing, including an insertion housing 1. The insertion housing 1 is provided with a front through - hole 101 and a rear through - hole 102. A side circular plate 2 is provided at the front through - hole 101 of the insertion housing 1. A rotary insertion tube 3 is rotatably provided at the center of the side circular plate 2. A fixed connection tube 4 coaxial with the rotary insertion tube 3 is fixedly provided at the rear through - hole 102 of the insertion housing 1. A rotary ring 5 is provided at the end of the rotary insertion tube 3 facing the fixed connection tube 4, and a fixed ring 6 is provided at the end of the fixed connection tube 4 facing the rotary insertion tube 3. A gear one 7 is provided on the rotary insertion tube 3, and a gear two 8 is meshed beside the gear one 7. The gear two 8 is fixedly provided on the rotating shaft of a motor 9, and the motor 9 is fixedly provided on the inner side wall of the insertion housing 1.

[0035] Specifically, the rotary insertion tube 3 is provided with threads. Align the threads of the rotary insertion tube 3 with the internal thread interface of the brake caliper, start the motor 9. The motor 9 drives the gear two 8 to rotate, transmits power through the gear one 7, and enables the rotary insertion tube 3 to rotate on the side circular plate 2, that is, the rotary insertion tube 3 can be quickly screwed into the inlet of the brake caliper.

[0036] Inside the socket shell 1, there is a sliding seat plate 10. A sliding cylinder 11 is slidably arranged on the sliding seat plate 10. On both sides of the sliding cylinder 11, there are respectively a first sealing ring 1101 and a second sealing ring 1102. A first sealing gasket 12 in contact with the rotating ring 5 is arranged on the first sealing ring 1101, and a second sealing gasket 13 in contact with the fixed ring 6 is arranged on the second sealing ring 1102. A limiting cover 14 is arranged on the side surface of the sliding cylinder 11.

[0037] Specifically, when the rotating insertion pipe 3 is not screwed into the internal thread interface of the brake caliper, the sliding cylinder 11 is in the left position, that is, the first sealing ring 1101 is not in contact with the rotating ring 5, and the first sealing gasket 12 is also not in contact with the rotating ring 5. Therefore, when the rotating insertion pipe 3 rotates, the rotating insertion pipe 3 drives the rotating ring 5 to rotate synchronously. The rotating ring 5 is not in contact with the first sealing gasket 12, avoiding wear of the first sealing gasket 12. When the rotating insertion pipe 3 is screwed into the internal thread interface of the brake caliper, the sliding cylinder 11 moves to the right position, that is, the first sealing ring 1101 is in contact with the rotating ring 5, and the second sealing ring 1102 is in contact with the fixed ring 6. The first sealing gasket 12 is compressed, making the seal between the first sealing ring 1101 and the rotating ring 5 tight; the second sealing gasket 13 is compressed, making the seal between the second sealing ring 1102 and the fixed ring 6 tight. The air flow flows out from the middle hole of the fixed connection pipe 4, then enters the inside of the sliding cylinder 11 and finally flows into the brake caliper.

[0038] A hose 15 is connected to the end of the fixed connection pipe 4 far from the fixed ring 6, and an air seat 16 is connected to the hose 15. Specifically, the air seat 16 is connected to the test air source, and the air flow in the air source flows into the fixed connection pipe 4 through the air seat 16 and the hose 15.

[0039] Two sliding rods 17 are slidably arranged on the side circular plate 2. At the end of the sliding rod 17 facing the sliding cylinder 11, there is a frustum 18. A pull rod 19 coaxial with the sliding rod 17 is arranged on the frustum 18, and the pull rod 19 is slidably arranged on the limiting cover 14. At the end of the pull rod 19 and inside the limiting cover 14, there is a pull platform 20; a retaining ring 21 in contact with the side circular plate 2 is arranged in the middle of the sliding rod 17. A first spring 22 is sleeved outside the sliding rod 17, and both ends of the first spring 22 are connected to the side circular plate 2 and the frustum 18 respectively. A sliding ring 24 is slidably arranged on the pull rod 19, and a second spring 23 is sleeved outside the pull rod 19. Both ends of the second spring 23 are connected to the sliding ring 24 and the limiting cover 14 respectively.

[0040] On the inner side wall of the socket shell 1 and beside both sliding rods 17, there are sliding rods 25. A sliding plate 26 is slidably arranged on the sliding rods 25. A third spring 27 is sleeved on the sliding rods 25, and both ends of the third spring 27 are connected to the sliding plate 26 and the sliding rods 25 respectively. One end of the sliding plate 26 is provided with a wedge block 28, and a lever 29 in contact with the corresponding wedge block 28 is arranged on the frustum 18. The other end of the sliding plate 26 is provided with a limiting block 30, and a limiting hole 1401 for the limiting block 30 to insert is opened on the limiting cover 14.

[0041] Specifically, when the rotary insertion tube 3 is not screwed into the internal thread interface of the brake caliper, the first spring 22 provides a pulling force, causing the retaining ring 21 on the sliding rod 17 to contact the side circular plate 2, the frustum 18 to separate from the sliding ring 24, the second spring 23 to be in its original length, and the pulling platform 20 to contact the inner surface of the limit cover 14, positioning the limit cover 14 and the sliding cylinder 11 on the left; at this time, the lever 29 and the wedge 28 are in a separated state, and the third spring 27 provides an elastic force to move the sliding plate 26 closer to the limit cover 14, that is, to insert the limit block 30 into the limit hole 1401.

[0042] When the rotary insertion tube 3 is screwed into the internal thread interface of the brake caliper, the end of the sliding rod 17 contacts the circular surface at the entrance of the brake caliper, causing the sliding rod 17 to slide inwardly towards the side circular plate 2. The sliding rod 17 drives the frustum 18 to move synchronously, and the frustum 18 contacts the sliding ring 24, starting to compress the second spring 23; simultaneously, the lever 29 contacts the inclined surface of the wedge 28, and the lever 29 drives the wedge 28 and the sliding plate 26 to move outwardly, separating the limit block 30 from the limit hole 1401. The compressed second spring 23 provides an elastic force to instantaneously move the limit cover 14 and the sliding cylinder 11 to the right position.

[0043] When the rotary insertion tube 3 is separated from the internal thread interface of the brake caliper again, the first spring 22 provides a pulling force, causing the retaining ring 21 to contact the side circular plate 2 again. The pulling platform 20 pulls the limit cover 14 and the sliding cylinder 11 to move back to the left position, that is, the limit hole 1401 coincides with the limit block 30. The third spring 27 provides a pulling force to insert the limit block 30 back into the limit hole 1401.

[0044] Considering that when the rotary insertion tube 3 is separated from the brake caliper, it is necessary to automatically close the air flow to avoid waste. There are three connecting columns 31 on the fixed ring 6, and a middle sealing plate 32 that contacts the second sealing ring 1102 is provided at the ends of the three connecting columns 31. A sealing cover 33 that contacts the fixed ring 6 is provided on the end surface of the sliding cylinder 11 away from the second sealing ring 13.

[0045] A third sealing ring 34 for contacting the middle sealing plate 32 is provided on the second sealing ring 1102, and a fourth sealing ring 35 for contacting the fixed ring 6 is provided on the sealing cover 33.

[0046] Specifically, when the rotary insertion tube 3 is separated from the brake caliper, that is, when the sliding cylinder 11 moves to the left position, the second sealing ring 1102 contacts the middle sealing plate 32, and the third sealing ring 34 is compressed, making the seal between the second sealing ring 1102 and the middle sealing plate 32 airtight; the sealing cover 33 contacts the fixed ring 6, and the fourth sealing ring 35 is compressed, making the seal between the sealing cover 33 and the fixed ring 6 airtight. Therefore, the air flow in the fixed connection pipe 4 will be blocked, automatically closing the air flow in the fixed connection pipe 4 to avoid waste.

[0047] Considering that when the rotary insertion tube 3 is separated from the internal thread interface of the brake caliper, the rotary insertion tube 3 rotates synchronously with the rotary ring 5, and there will be frictional loss between the sealing ring I 12 and the rotary ring 5. A pressing block 36 is provided on the outer side surface of the sealing cover 33, a slope is provided on the pressing block 36, a side hole 103 is provided on the outer side wall of the insertion shell 1, and a rotary seat 37 is further provided on the outer side wall of the insertion shell 1. A handle 38 is rotatably provided on the rotary seat 37, an arc-shaped slide rod 39 for driving the pressing block 36 is provided below the handle 38, the center of the arc-shaped slide rod 39 coincides with the rotation center of the handle 38, the arc-shaped slide rod 39 extends into the interior of the insertion shell 1 from the side hole 103, an arc-shaped cylinder 40 is sleeved outside the arc-shaped slide rod 39, the lower part of the arc-shaped cylinder 40 is provided on the outer side wall of the insertion shell 1, an arc-shaped spring 41 is sleeved outside the arc-shaped slide rod 39, and the arc-shaped spring 41 is located inside the arc-shaped cylinder 40. The two ends of the arc-shaped spring 41 are respectively connected to the outer side wall of the insertion shell 1 and the arc-shaped slide rod 39.

[0048] Specifically, manually grasp the handle 38 to rotate the handle 38 around the rotary seat 37. The handle 38 drives the arc-shaped slide rod 39 to rotate synchronously. The arc-shaped spring 41 is compressed, and the arc-shaped slide rod 39 is inserted into the interior of the insertion shell 1. The lower end of the arc-shaped slide rod 39 contacts the slope of the pressing block 36, driving the pressing block 36, the sealing cover 33 and the sliding cylinder 11 to move leftward, that is, initially separating the sealing ring I 12 on the sealing ring I 1101 from the rotary ring 5 to avoid wear of the sealing ring I 12.

[0049] The working principle of the quick-connecting tube for brake caliper seal testing provided by the present invention is as follows: In the initial state, that is, when the rotary insertion tube 3 is not screwed into the internal thread interface of the brake caliper, the spring I 22 provides a pulling force, making the retaining ring 21 on the sliding rod 17 contact the side circular plate 2, the frustum 18 separate from the sliding ring 24, the spring II 23 is in its original length, and the pulling platform 20 contact the inner surface of the limit cover 14, making the limit cover 14 and the sliding cylinder 11 in the left position; At this time, the dial rod 29 and the wedge block 28 are in a separated state, and the spring III 27 provides an elastic force to make the sliding plate 26 close to the limit cover 14, that is, making the limit block 30 inserted into the limit hole 1401. At the same time, the sealing ring II 1102 contacts the middle sealing plate 32, and the sealing ring III 34 is compressed, making the sealing between the sealing ring II 1102 and the middle sealing plate 32 tight; the sealing cover 33 contacts the fixed ring 6, and the sealing ring IV 35 is compressed, making the sealing between the sealing cover 33 and the fixed ring 6 tight. Therefore, the air flow in the fixed connection tube 4 will be blocked, automatically closing the air flow in the fixed connection tube 4 to avoid waste.

[0050] Manually hold the plug housing 1 tightly, align the thread of the rotary insertion tube 3 with the internal thread interface of the brake caliper, start the motor 9, the motor 9 drives the second gear 8 to rotate, and transmits power through the first gear 7, so that the rotary insertion tube 3 rotates on the side circular plate 2, that is, the rotary insertion tube 3 can be quickly screwed into the inlet of the brake caliper. During this process, since the sliding cylinder 11 is in the left position, that is, the first sealing ring 1101 does not contact the rotary ring 5, and the first sealing ring 12 also does not contact the rotary ring 5, when the rotary insertion tube 3 rotates, the rotary insertion tube 3 drives the rotary ring 5 to rotate synchronously, and the rotary ring 5 does not contact the first sealing ring 12, avoiding wear of the first sealing ring 12.

[0051] When the rotary insertion tube 3 is screwed into the internal thread interface of the brake caliper, the end of the sliding rod 17 contacts the circular surface at the interface of the brake caliper, causing the sliding rod 17 to slide inward into the side circular plate 2. The sliding rod 17 drives the frustum 18 to move synchronously. The frustum 18 contacts the sliding ring 24, and the second spring 23 starts to compress; at the same time, the lever 29 contacts the inclined surface of the wedge 28, and the lever 29 drives the wedge 28 and the slide plate 26 to move outward, that is, the limit block 30 is separated from the limit hole 1401. The compressed second spring 23 provides elastic force to drive the limit cover 14 and the sliding cylinder 11 to instantly move to the right position. After the sliding cylinder 11 moves to the right position, that is, the first sealing ring 1101 contacts the rotary ring 5, and the second sealing ring 1102 contacts the fixed ring 6. The first sealing ring 12 is compressed, making the seal between the first sealing ring 1101 and the rotary ring 5 tight; the second sealing ring 13 is compressed, making the seal between the second sealing ring 1102 and the fixed ring 6 tight.

[0052] The air seat 16 is connected to the test air source, and the air flow in the air source flows into the fixed connection pipe 4 through the air seat 16 and the hose 15. The air flow flows out from the middle hole of the fixed connection pipe 4, then enters the inside of the rotary insertion tube 3 through the inside of the sliding cylinder 11, and finally flows into the brake caliper for seal testing.

[0053] Manually grasp the handle 38, make the handle 38 rotate around the rotating seat 37, the handle 38 drives the arc-shaped sliding rod 39 to rotate synchronously, the arc-shaped spring 41 is compressed, the arc-shaped sliding rod 39 inserts into the inside of the plug housing 1, and the lower end of the arc-shaped sliding rod 39 contacts the inclined surface of the pressing block 36, driving the pressing block 36, the sealing cover 33 and the sliding cylinder 11 to move to the left position, that is, the first sealing ring 12 on the first sealing ring 1101 is initially separated from the rotary ring 5, avoiding wear of the first sealing ring 12. Reverse-start the motor 9, and then transmit power through the second gear 8 and the first gear 7, so that the rotary insertion tube 3 rotates in the reverse direction, so that the rotary insertion tube 3 is gradually separated from the internal thread interface of the brake caliper. When the rotary insertion tube 3 is completely separated from the internal thread interface of the brake caliper, the first spring 22 provides a pulling force, so that the retaining ring 21 contacts the side circular plate 2 again, and the pulling platform 20 pulls the limit cover 14 and the sliding cylinder 11 to move back to the left position, that is, the limit hole 1401 coincides with the limit block 30, and the third spring 27 provides a pulling force to make the limit block 30 re-insert into the limit hole 1401.

[0054] Embodiment 2: On the basis of embodiment 1, the difference of this embodiment lies in that a square cavity 301 is provided inside the rotary cannula 3, a stopper core 42 is rotatably provided in the square cavity 301, and the rotating shaft of the stopper core 42 extends to the outside of the rotary cannula 3, the rotating shaft of the stopper core 42 is fixedly connected to one end of a connecting rod 1 43, the other end of the connecting rod 1 43 is hinged to one end of a connecting rod 2 44, the other end of the connecting rod 2 44 is hinged to a semicircular ring 45, and the semicircular ring 45 is jointly connected to two truncated cones 18.

[0055] When the rotary insert tube 3 is not screwed into the internal threaded interface of the brake caliper, that is, the retaining ring 21 on the sliding rod 17 is in contact with the side circular plate 2, the sliding rod 17 with the truncated cone 18 and the semicircular ring 45 is located in the left position, at this time, the plane of the retaining core 42 is perpendicular to the axis of the rotary insert tube 3, and the retaining core 42 blocks the square cavity 301 to prevent impurities from entering the interior of the plug shell 1 from the through hole of the rotary insert tube 3; when the rotary insert tube 3 is screwed into the internal threaded interface of the brake caliper, the semicircular ring 45 is located in the right position, and power is transmitted through the connecting rod 2 44 and the connecting rod 1 43 to rotate the retaining core 42 ninety degrees, that is, at this time, the side surface of the retaining core 42 is parallel to the axis of the rotary insert tube 3, and the airflow passes smoothly through the center hole of the rotary insert tube 3.

[0056] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. Quick-connect pipe for brake caliper seal test, including an insertion shell (1), characterized in that: The plug housing (1) is provided with a front through hole (101) and a rear through hole (102). A side circular plate (2) is provided at the front through hole (101) of the plug housing (1). A rotary insertion tube (3) is rotatably provided at the center of the side circular plate (2). A fixed connection tube (4) coaxial with the rotary insertion tube (3) is fixedly provided at the rear through hole (102) of the plug housing (1); A rotary ring (5) is provided at the end of the rotary insertion tube (3) facing the fixed connection tube (4). A fixed ring (6) is provided at the end of the fixed connection tube (4) facing the rotary insertion tube (3). A first gear (7) is provided on the rotary insertion tube (3). A second gear (8) is meshed beside the first gear (7). The second gear (8) is fixedly provided on the rotating shaft of the motor (9). The motor (9) is fixedly provided on the inner side wall of the plug housing (1); A sliding seat plate (10) is provided inside the plug housing (1). A sliding cylinder (11) is slidably provided on the sliding seat plate (10). A first sealing ring (1101) and a second sealing ring (1102) are respectively provided on both sides of the sliding cylinder (11). A first sealing ring (12) in contact with the rotary ring (5) is provided on the first sealing ring (1101). A second sealing ring (13) in contact with the fixed ring (6) is provided on the second sealing ring (1102). A limiting cover (14) is provided on the side of the sliding cylinder (11) facing the side circular plate (2); A hose (15) is connected to the end of the fixed connection tube (4) far from the fixed ring (6). An air seat (16) is connected to the hose (15).

2. The quick-connect pipe for brake caliper seal test according to claim 1, characterized in that: Two sliding rods (17) are slidably provided on the side circular plate (2). A frustum (18) is provided at the end of the sliding rod (17) facing the sliding cylinder (11). A pull rod (19) coaxial with the sliding rod (17) is provided on the frustum (18). And the pull rod (19) is slidably provided on the limiting cover (14). A pull table (20) is provided at the end of the pull rod (19) and inside the limiting cover (14).

3. The quick-connect pipe for brake caliper seal test according to claim 2, characterized in that: A retaining ring (21) in contact with the side circular plate (2) is provided in the middle of the sliding rod (17). A first spring (22) is sleeved outside the sliding rod (17). The two ends of the first spring (22) are respectively connected to the side circular plate (2) and the frustum (18). A sliding ring (24) is slidably provided on the pull rod (19). A second spring (23) is sleeved outside the pull rod (19). The two ends of the second spring (23) are respectively connected to the sliding ring (24) and the limiting cover (14).

4. The quick-connect pipe for brake caliper seal test according to claim 3, characterized in that: Sliding rods (25) are provided on the inner side wall of the plug housing (1) and beside both sliding rods (17). A sliding plate (26) is slidably provided on the sliding rod (25). A third spring (27) is sleeved on the sliding rod (25). The two ends of the third spring (27) are respectively connected to the sliding plate (26) and the sliding rod (25). A wedge block (28) is provided at one end of the sliding plate (26). And a lever (29) in contact with the corresponding wedge block (28) is provided on the frustum (18). A limiting block (30) is provided at the other end of the sliding plate (26). A limiting hole (1401) for the limiting block (30) to insert is opened on the limiting cover (14).

5. The quick-connect pipe for brake caliper seal test according to claim 4, characterized in that: Three connecting columns (31) are provided on the fixed circular ring (6), and a middle sealing plate (32) in contact with the second sealing circular ring (1102) is jointly provided at the ends of the three connecting columns (31). A sealing cover (33) in contact with the fixed circular ring (6) is provided on the end face of the sliding cylinder (11) far from the second sealing ring (13).

6. The quick-connect pipe for brake caliper seal test according to claim 5, characterized in that: A third sealing ring (34) for contacting the middle sealing plate (32) is provided on the second sealing circular ring (1102), and a fourth sealing ring (35) for contacting the fixed circular ring (6) is provided on the sealing cover (33).

7. The quick-connect pipe for brake caliper seal test according to claim 6, characterized in that: A pressing block (36) is provided on the outer side surface of the sealing cover (33), and an inclined surface is provided on the pressing block (36). A side hole (103) is provided on the outer side wall of the socket shell (1), and a rotating seat (37) is further provided on the outer side wall of the socket shell (1). A handle (38) is rotatably provided on the rotating seat (37). An arc-shaped sliding rod (39) for driving the pressing block (36) is provided below the handle (38). The center of the arc-shaped sliding rod (39) coincides with the rotation center of the handle (38). The arc-shaped sliding rod (39) extends into the interior of the socket shell (1) from the side hole (103). An arc-shaped cylinder (40) is sleeved outside the arc-shaped sliding rod (39). The lower part of the arc-shaped cylinder (40) is provided on the outer side wall of the socket shell (1). An arc-shaped spring (41) is sleeved outside the arc-shaped sliding rod (39), and the arc-shaped spring (41) is located inside the arc-shaped cylinder (40). The two ends of the arc-shaped spring (41) are respectively connected to the outer side wall of the socket shell (1) and the arc-shaped sliding rod (39).

8. The quick-connect pipe for brake caliper seal test according to claim 7, characterized in that: A square cavity (301) is provided inside the rotary insertion pipe (3). A blocking core (42) is rotatably provided in the square cavity (301), and the rotating shaft of the blocking core (42) extends to the outside of the rotary insertion pipe (3). The rotating shaft of the blocking core (42) is fixedly connected to one end of a first connecting rod (43). The other end of the first connecting rod (43) is hinged to one end of a second connecting rod (44). The other end of the second connecting rod (44) is hinged to a semi-circular ring (45). The semi-circular rings (45) are jointly connected to the two frustums (18).

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