Power takeoff air tightness detection tool

Abstract

The utility model discloses a power takeoff airtightness detection tool, which relates to the technical field of airtightness detection and comprises a support and a sealing assembly. The left side of the support is provided with a PLC, and the upper side of the interior of the support is provided with a first electric telescopic rod. The sealing assembly comprises a connecting plate, a fixing frame, a conical pipe, a sealing ring, an air bag and a connecting barrel, the connecting plate is fixed to a telescopic arm of the first electric telescopic rod, the fixing frame is fixed to the lower side of the connecting plate, the conical pipe is fixed to the lower side of the fixing frame, and the sealing ring is fixed to the lower end of the conical pipe. An annular groove is formed in the sealing ring, an air bag is fixed in the annular groove, a connecting barrel is fixed to the circumferential face of the sealing ring, an air injection assembly is installed on the lower side of a connecting plate, a detection assembly is installed on the surface of the connecting barrel, and the air tightness of the power takeoff can be rapidly detected.

Description

TECHNICAL FIELD

[0001] The utility model relates to airtightness detection technical field, concretely is a kind of power take-off airtightness detection frock. BACKGROUND

[0002] With the rapid development of China's economy, the demand for engineering machinery products needed by infrastructure construction gradually increases, and power take-off assembly products, as the matching products of engine power output, are widely used with lower cost and reliable performance. The working principle is that after assembling related components such as gear shaft, bearing, shell and flange, it is fixed on the engine and engaged with gear train, for power output. Since the bearing bears load and rotates at high speed, lubrication is required. The required lubricating oil enters the inner cavity of the power take-off through the oil hole at the shaft diameter of the shell. To prevent the lubricating oil from leaking to the outside of the power take-off through the flange part sealed by the oil seal, a sealing element, i.e. rotating shaft oil seal, is designed and installed to seal the lubricating oil. To ensure sealing performance and effect, the power take-off is subjected to airtightness detection before leaving the factory as a preventive detection measure for oil seal oil leakage. The airtightness detection usually adopts the method of oil immersion and pressure leakage detection, which has low detection efficiency and reliability. Therefore, we propose a kind of power take-off airtightness detection frock. SUMMARY

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a kind of power take-off airtightness detection frock, which can quickly detect the airtightness of power take-off and effectively solve the problems in the background art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of power take-off airtightness detection frock, including support and sealing assembly;

[0005] Support: PLC controller is installed on the left side, and first electric telescopic rod is installed on the upper side in the support;

[0006] Sealing assembly: including connecting plate, fixed frame, conical tube, sealing ring, air bag and connecting bucket, connecting plate is fixed on the telescopic arm of first electric telescopic rod, fixed frame is fixed on the lower side of connecting plate, conical tube is fixed on the lower side of fixed frame, sealing ring is fixed on the lower end of conical tube, annular groove is formed in the inside of sealing ring, air bag is fixed in the inside of annular groove, connecting bucket is fixed on the circumference of sealing ring, injection assembly is installed on the lower side of connecting plate, detection assembly is installed on the surface of connecting bucket, and the port of power take-off is sealed by setting sealing assembly;

[0007] Wherein: the output end of external power supply is electrically connected to the input end of PLC controller, and the input end of first electric telescopic rod is electrically connected to the output end of PLC controller.

[0008] Further, the air injection assembly comprises an air pump, an air outlet pipe, a connecting pipe and a first electromagnetic valve, the lower side of the connecting plate is provided with the air pump, the air outlet of the air pump is fixedly provided with the air outlet pipe, the lower end of the air outlet pipe is fixedly arranged in the upper end of the conical pipe, the circumferential surface of the air outlet pipe is provided with an opening, the opening is fixedly provided with the connecting pipe, the lower end of the connecting pipe is fixedly arranged in the air inlet of the air bag, the circumferential surfaces of the connecting pipe and the air outlet pipe are both provided with the first electromagnetic valve, the input end of the first electromagnetic valve is electrically connected with the output end of the PLC controller, and the air injection assembly is arranged to inject air into the cavities of the air bag and the power take-off device respectively.

[0009] Further, the detection assembly comprises a second electric telescopic rod, a connecting ring, a blocking ring and a pressure sensor, the upper side of the connecting plate is provided with two corresponding mounting holes, the mounting holes are internally provided with the second electric telescopic rod, the telescopic arms of the two second electric telescopic rods are fixedly provided with the connecting ring, the connecting ring is internally fixedly provided with the blocking ring, the blocking ring is sleeved on the circumferential surface of the connecting barrel, the blocking ring is internally provided with a groove, and the groove is internally provided with the pressure sensor, the input end of the second electric telescopic rod is electrically connected with the output end of the PLC controller, and the pressure sensor is bidirectionally electrically connected with the PLC controller, so that the detection assembly is arranged to detect the air tightness of the power take-off device.

[0010] Further, the air outlet pipe is fixedly arranged in the air outlet of the air bag, the circumferential surface of the air outlet pipe is provided with the second electromagnetic valve, the input end of the second electromagnetic valve is electrically connected with the output end of the PLC controller, and the air outlet pipe is arranged to exhaust the gas in the air bag.

[0011] Further, the blocking ring is internally provided with the mounting groove, the mounting groove is internally fixedly provided with the rubber ring, and the rubber ring is attached to the surface of the connecting barrel, so that the gap between the blocking ring and the connecting barrel can be sealed by arranging the rubber ring.

[0012] Further, the left side of the support is provided with the mounting seat, the left end of the mounting seat is provided with the buzzer, and the input end of the buzzer is electrically connected with the output end of the PLC controller, so that the buzzer can alarm and remind the user when the power take-off device leaks.

[0013] Compared with the prior art, the power take-off device air tightness detection tool has the following advantages:

[0014] The port of the power take-off is sealed by the sealing assembly, the inner cavity of the power take-off forms a closed space after sealing, then the blocking ring is controlled to wrap the whole power take-off downwards, after wrapping, the inner cavity of the power take-off is injected with gas through the gas outlet pipe, the gas pressure inside the blocking ring is continuously detected through the pressure sensor during the gas injection process, whether the gas pressure changes or not is checked, whether the power take-off leaks or not can be known, and the air tightness of the power take-off can be quickly detected in this case. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a front side structure schematic view of the utility model;

[0016] Fig. 2 It is a front side sectional view of the utility model;

[0017] Fig. 3 It is a gas injection assembly structure schematic view of the utility model.

[0018] In the drawing: 1 support, 2 PLC controller, 3 first electric telescopic rod, 4 sealing assembly, 41 connecting plate, 42 fixed frame, 43 conical pipe, 44 sealing ring, 45 air bag, 46 connecting barrel, 5 gas injection assembly, 51 gas pump, 52 gas outlet pipe, 53 connecting pipe, 54 first electromagnetic valve, 6 detection assembly, 61 second electric telescopic rod, 62 connecting ring, 63 blocking ring, 64 pressure sensor, 7 exhaust pipe, 8 second electromagnetic valve, 9 rubber ring, 10 mounting seat, 11 buzzer alarm. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] Please refer to Figs. 1-3 The embodiment provides a technical scheme: a power take-off air tightness detection tool, which comprises a support 1 and a sealing assembly 4.

[0021] The support 1 is provided with a PLC controller 2 on the left side, and a first electric telescopic rod 3 is arranged on the upper side in the support 1.

[0022] The sealing assembly 4 comprises a connecting plate 41, a fixing frame 42, a conical pipe 43, a sealing ring 44, an air bag 45 and a connecting barrel 46. The connecting plate 41 is fixed on the telescopic arm of the first electric telescopic rod 3. The lower side of the connecting plate 41 is fixed with the fixing frame 42. The lower side of the fixing frame 42 is fixed with the conical pipe 43. The lower end of the conical pipe 43 is fixed with the sealing ring 44. The inside of the sealing ring 44 is provided with an annular groove. The inside of the annular groove is fixed with the air bag 45. The circumference of the sealing ring 44 is fixed with the connecting barrel 46. The lower side of the connecting plate 41 is installed with the gas injection assembly 5. The surface of the connecting barrel 46 is installed with the detection assembly 6. The gas injection assembly 5 comprises a gas pump 51, a gas outlet pipe 52, a connecting pipe 53 and a first electromagnetic valve 54. The lower side of the connecting plate 41 is installed with the gas pump 51. The gas outlet of the gas pump 51 is fixed with the gas outlet pipe 52. The lower end of the gas outlet pipe 52 is fixed at the upper end inside the conical pipe 43. The circumference of the gas outlet pipe 52 is provided with an opening. The opening is fixed with the connecting pipe 53. The lower end of the connecting pipe 53 is fixed inside the air inlet arranged on the surface of the air bag 45. The circumferences of the connecting pipe 53 and the gas outlet pipe 52 are installed with the first electromagnetic valve 54. The input end of the first electromagnetic valve 54 is electrically connected with the output end of the PLC controller 2. The detection assembly 6 comprises a second electric telescopic rod 61, a connecting ring 62, a blocking ring 63 and a pressure sensor 64. The upper side of the connecting plate 41 is provided with two corresponding installation holes. The inside of the installation holes is installed with the second electric telescopic rod 61. The telescopic arms of the two second electric telescopic rods 61 are fixed with the connecting ring 62. The inside of the connecting ring 62 is fixed with the blocking ring 63. The blocking ring 63 is sleeved on the circumference of the connecting barrel 46. The inside of the blocking ring 63 is provided with a groove. The groove is installed with the pressure sensor 64. The input end of the second electric telescopic rod 61 is electrically connected with the output end of the PLC controller 2. The pressure sensor 64 is bidirectionally electrically connected with the PLC controller 2. The air tightness of the power take-off device is detected by the detection assembly 6. The air injection assembly 5 is arranged to inject air into the air bag 45 and the inner cavity of the power take-off device respectively. The port of the power take-off device is sealed by the sealing assembly 4.

[0023] Wherein: the input end of the PLC controller 2 is electrically connected with the output end of the external power supply. The output end of the PLC controller 2 is electrically connected with the input end of the first electric telescopic rod 3.

[0024] Wherein: the inside of the air outlet arranged on the surface of the air bag 45 is fixed with the exhaust pipe 7. The circumference of the exhaust pipe 7 is installed with the second electromagnetic valve 8. The input end of the second electromagnetic valve 8 is electrically connected with the output end of the PLC controller 2. The gas inside the air bag 45 is discharged by the exhaust pipe 7.

[0025] Wherein: the inside of the blocking ring 63 is installed with the installation groove. The inside of the installation groove is fixed with the rubber ring 9. The rubber ring 9 is attached to the surface of the connecting barrel 46. The gap between the blocking ring 63 and the connecting barrel 46 is sealed by the rubber ring 9.

[0026] Wherein: the left side of the bracket 1 is provided with a mounting seat 10, the left end of the mounting seat 10 is provided with a buzzer alarm 11, the input end of the buzzer alarm 11 is electrically connected with the output end of the PLC controller 2, and the buzzer alarm 11 can alarm and remind the user when the power take-off device leaks.

[0027] The working principle of the power take-off device air tightness detection tool is as follows: first, the power take-off device is placed on the lower side of the bracket 1, then the first electric telescopic rod 3 is started to move the connecting plate 41 downward, the connecting plate 41 moves downward to move the conical tube 43 downward, the conical tube 43 moves downward to make the sealing ring 44 be sleeved on the power take-off device port, then the first electromagnetic valve 54 on the lower side is opened and the air pump 51 is started to inject air into the air bag 45 to make it swell, the air bag 45 swells to seal the power take-off device port, after sealing, the inner cavity of the power take-off device forms a sealed space, then the two second electric telescopic rods 61 are started to move the connecting ring 62 downward, the connecting ring 62 drives the blocking ring 63 downward to be attached to the lower side of the bracket 1, after being attached, the power take-off device can be wrapped in the bracket 1, after being wrapped, the first electromagnetic valve 54 on the lower side is closed, then the first electromagnetic valve 54 on the upper side is opened and the air pump 51 is controlled to work again to inject compressed gas into the inner cavity of the power take-off device through the air outlet pipe 52, the pressure sensor 64 continuously detects the air pressure in the blocking ring 63 during the air injection process, whether the air pressure changes or not, whether the power take-off device leaks or not can be known, if the air pressure changes, the PLC controller 2 can control the buzzer alarm 11 to work to remind the user that the power take-off device leaks, in this case, the air tightness of the power take-off device can be quickly detected, after detection, the second electromagnetic valve 8 is opened to make the gas in the air bag 45 exhaust through the exhaust pipe 7, the first electric telescopic rod 3 is controlled to retract to make the sealing ring 44 away from the power take-off device, then the power take-off device can be taken out.

[0028] It is worth noting that the PLC controller 2 disclosed in the above embodiment is a specific model of Siemens S7-200, the first electric telescopic rod 3 and the second electric telescopic rod 61 can be selected as TGC-A large thrust electric telescopic rod, the air pump 51 can be selected as a 12v small air pump, the first electromagnetic valve 54 and the second electromagnetic valve 8 can be selected as VP3185-205DA1-X81 electromagnetic valve, the buzzer alarm 11 can be selected as AYBOM buzzer, and the pressure sensor 64 can be selected as DP-101 pressure sensor, and the PLC controller 2 controls the first electric telescopic rod 3, the second electric telescopic rod 61, the air pump 51, the first electromagnetic valve 54, the second electromagnetic valve 8 and the buzzer alarm 11 to work by using the method commonly used in the prior art.

[0029] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which are made by using the content of the present application specification and drawings, are also included in the patent protection scope of the present application.

Claims

1. A power take-off airtightness detection tool, characterized in that: The utility model relates to a sealing device for the sealing of the pipe, comprising a bracket (1) and a sealing assembly (4). The bracket (1) is provided with a PLC controller (2) on the left side, and a first electric telescopic rod (3) is installed on the upper side inside the bracket (1). The sealing assembly (4) comprises a connecting plate (41), a fixing frame (42), a conical pipe (43), a sealing ring (44), an air bag (45) and a connecting barrel (46), the connecting plate (41) is fixed on the telescopic arm of the first electric telescopic rod (3), the fixing frame (42) is fixed on the lower side of the connecting plate (41), the conical pipe (43) is fixed on the lower side of the fixing frame (42), the sealing ring (44) is fixed on the lower end of the conical pipe (43), an annular groove is formed in the inside of the sealing ring (44), the air bag (45) is fixed in the annular groove, the connecting barrel (46) is fixed on the circumferential surface of the sealing ring (44), a gas injection assembly (5) is installed on the lower side of the connecting plate (41), and a detection assembly (6) is installed on the surface of the connecting barrel (46). The input end of the PLC controller (2) is electrically connected to the output end of an external power supply, and the output end of the PLC controller (2) is electrically connected to the input end of the first electric telescopic rod (3). The gas injection assembly (5) comprises a gas pump (51), an air outlet pipe (52), a connecting pipe (53) and a first electromagnetic valve (54), the gas pump (51) is installed on the lower side of the connecting plate (41), the air outlet pipe (52) is fixed in the gas outlet of the gas pump (51), the lower end of the air outlet pipe (52) is fixed in the upper end inside the conical pipe (43), an opening is formed in the circumferential surface of the air outlet pipe (52), the connecting pipe (53) is fixed in the opening, the lower end of the connecting pipe (53) is fixed in the air inlet on the surface of the air bag (45), the first electromagnetic valve (54) is installed on the circumferential surface of the connecting pipe (53) and the air outlet pipe (52), and the input end of the first electromagnetic valve (54) is electrically connected to the output end of the PLC controller (2). The detection assembly (6) comprises a second electric telescopic rod (61), a connecting ring (62), a blocking ring (63) and a pressure sensor (64), two corresponding mounting holes are formed in the upper side of the connecting plate (41), the second electric telescopic rod (61) is installed in the mounting holes, the connecting ring (62) is fixed on the telescopic arms of the two second electric telescopic rods (61), the blocking ring (63) is fixed in the connecting ring (62), the blocking ring (63) is sleeved on the circumferential surface of the connecting barrel (46), a groove is formed in the inside of the blocking ring (63), and the pressure sensor (64) is installed in the groove, the input end of the second electric telescopic rod (61) is electrically connected to the output end of the PLC controller (2), and the pressure sensor (64) is bidirectionally electrically connected to the PLC controller (2).

2. The air tightness detection tool for a power takeoff according to claim 1, characterized in that: The inside of the exhaust port arranged on the surface of the air bag (45) is fixed with an exhaust pipe (7), the circumferential surface of the exhaust pipe (7) is installed with a second electromagnetic valve (8), and the input end of the second electromagnetic valve (8) is electrically connected with the output end of the PLC controller (2).

3. The air tightness detection tool for a power takeoff according to claim 1, characterized in that: The inside of the blocking ring (63) is installed with a mounting groove, the inside of the mounting groove is fixed with a rubber ring (9), and the rubber ring (9) is attached to the surface of the connecting barrel (46).

4. The air tightness detection tool for a power takeoff according to claim 1, characterized in that: The left side of the support (1) is installed with a mounting seat (10), the left end of the mounting seat (10) is installed with a buzzer alarm (11), and the input end of the buzzer alarm (11) is electrically connected with the output end of the PLC controller (2).

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