A device for testing the tightness of a part having a curved intersecting bore

Abstract

The application discloses a device for testing the sealing performance of a part with a curved-cross inner hole, which comprises a bottom plate, a positioning support rod fixed to the top end of the bottom plate, a positioning insertion hole formed in the top end of the bottom plate, and a hinge bolt installed on each of the opposite side walls of the bottom plate; an A-hole spindle, the lower end of which is inserted into the positioning insertion hole, a speed regulator shell placed on the top end of the bottom plate, and an A-hole sealing insertion hole formed in the speed regulator shell and inserted into the A-hole spindle; a pressing plate, the bottom end of which is pressed against the top end of the speed regulator shell, the upper end of the positioning support rod is fixed to the pressing plate, and a clamping notch is formed in each of the opposite side walls of the pressing plate for clamping the two hinge bolts; a sealing member for sealing the corresponding hole of the speed regulator shell and a pipe connector for injecting lubricating oil into the corresponding hole of the speed regulator shell are installed on the bottom plate and the pressing plate. The device can seal, press and test the sealing performance and the overall oil pressure resistance of the speed regulator shell with irregular shape and structure and a curved-cross inner hole (oil passage).

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of inspection devices, in particular to a device for inspecting the sealing performance of a part with curved and intersecting internal holes. BACKGROUND

[0002] A propeller speed regulator is an important mechanical device for adjusting the speed and blade angle of the propeller of a propeller-powered aircraft. It controls the speed and flight state of the aircraft by controlling the oil pressure and flow, and can control the amount of oil entering the engine and the angle of the propeller blades to precisely control the power output of the aircraft. The speed regulator housing is an important component of the propeller speed regulator. The part is machined after being cast from ZL105 aluminum alloy, and the internal oil passage is cast. The subsequent machining is performed on the working area of each hole and the working end face of the part. The oil passage hole has the characteristics of complex, curved, and intersecting lines. According to the performance requirements of the product, the speed regulator housing that has been machined needs to be subjected to a sealing test. Lubricating oil is injected into the specified holes of the speed regulator housing while maintaining the good sealing performance of other holes. The oil pressure is maintained at 10 MPa (the oil pressure resistance of the speed regulator housing under working conditions is 10 MPa), and the sealing performance of each hole of the speed regulator housing is good, and the housing as a whole does not leak lubricating oil. However, due to the irregular shape of the machined speed regulator housing, the curved and intersecting holes in the housing, the inclined and straight holes on the outer end face, and the irregular distribution of the holes, it is difficult to simultaneously seal each hole of the housing and resist the impact of high oil pressure. There is currently no special device for sealing the speed regulator housing.

[0003] Therefore, how to provide a device for inspecting the sealing performance of a part with curved and intersecting internal holes, which can seal, press, and test the oil pressure resistance of a speed regulator housing with irregular shape and structure, and accurately position and seal each hole of the speed regulator with simple structure, easy operation, and high working efficiency, is a problem that needs to be solved by those skilled in the art. SUMMARY

[0004] Therefore, how to provide a device for inspecting the sealing performance of a part with curved and intersecting internal holes, which can seal, press, and test the oil pressure resistance of a speed regulator housing with irregular shape and structure, and accurately position and seal each hole of the speed regulator with simple structure, easy operation, and high working efficiency, is a problem that needs to be solved by those skilled in the art.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] A device for inspecting the sealing performance of a part with curved and intersecting internal holes, comprising:

[0007] A bottom plate, two positioning support rods are fixedly arranged on the top end of the bottom plate, a positioning plug hole is formed on the top end surface of the bottom plate before the two positioning support rods, and two side walls of the bottom plate are respectively provided with a hinge bolt;

[0008] An A hole mandrel is inserted and fixed in the positioning plug hole, a speed regulator shell is placed on the top end surface of the bottom plate, and an A hole in the speed regulator shell is sealingly inserted in the A hole mandrel;

[0009] A pressing plate is press-connected to the top end surface of the speed regulator shell, the upper ends of the two positioning support rods are respectively arranged in two positioning holes in the pressing plate, and the upper ends of the two positioning support rods are respectively provided with a first locking nut, the bottom end surface of the first locking nut is in press contact with the top end surface of the pressing plate, the two side walls of the pressing plate are respectively provided with a clamping notch for clamping the two hinge bolts, and the hinge bolts are respectively provided with a second locking nut, and the bottom end surface of the second locking nut is in press contact with the top end surface of the pressing plate.

[0010] The bottom plate and the pressing plate are respectively provided with a sealing element for sealing a corresponding hole in the speed regulator shell and a pipe connector for injecting lubricating oil into the corresponding hole in the speed regulator shell, and the pipe connector is connected to an oil outlet of an oil press through an oil pipe.

[0011] Compared with the prior art, the device for testing the sealing performance of a part with a curved and crossed inner hole is provided, and the bottom plate is placed on a pressing test operation table, the A hole mandrel is inserted into the positioning plug hole, the speed regulator shell is placed on the bottom plate, the A hole in the speed regulator shell is inserted into the A hole mandrel, the holes in the speed regulator shell are sealed by the sealing element, the pipe connector is installed on the predetermined pressing hole, the pressing plate is installed through the two positioning support rods and is locked and fixed by the first locking nut, the two hinge bolts are respectively clamped into the two clamping notches and are locked and fixed by the second locking nut, the speed regulator shell is fixed between the bottom plate and the pressing plate, the pipe connector is connected to the oil outlet of the external oil press, the predetermined hole is pressed by the lubricating oil, the oil pressure is adjusted to be below 10 MPa, a period of time is maintained, and whether the oil leaks from the surface of the speed regulator shell is observed, if the oil leaks from the surface of the speed regulator shell, it indicates that the speed regulator shell has casting defects such as sand holes and cracks, and if the oil does not leak from the surface of the speed regulator shell, it indicates that the sealing performance of the speed regulator shell is good and the casting has no defects.

[0012] Therefore, the device can realize the purpose of sealing, pressing, testing the sealing property and overall oil pressure resistance of the speed regulator shell with irregular shape, structure and curved and crossed inner holes (oil paths), and accurately positions and seals each hole of the speed regulator, is simple in structure, convenient to operate and high in working efficiency.

[0013] Further, an open gasket is pressed between the first locking nut and the pressing plate.

[0014] The beneficial effects of the above technical solution are that the pressing force of the first locking screw can be improved, the speed regulator shell can be pressed and fixed on the bottom plate by the pressing plate, and the accurate installation of the sealing element is avoided due to the displacement of the speed regulator shell during installation of the sealing element.

[0015] Further, an A shaft pressing sleeve is pressed on the upper end of the A hole mandrel, an A shaft pressing nut is screwed on the pressing plate, and the bottom end surface of the A shaft pressing nut is pressed against the pressure bearing surface of the A shaft pressing sleeve.

[0016] The beneficial effects of the above technical solution are that the A shaft pressing nut can press the A shaft pressing sleeve by rotating the A shaft pressing nut, and the A shaft pressing sleeve can press the A hole mandrel, so that the A hole mandrel can be stably installed in the A hole, and the installation of the A hole mandrel is avoided.

[0017] Further, the pipe joint nozzle includes a B hole pipe joint nozzle, a D hole pipe joint nozzle, a J hole pipe joint nozzle and an M hole pipe joint nozzle, and the sealing element includes:

[0018] A B hole mandrel is sealingly inserted into a B hole on the speed regulator shell, a B hole pipe joint nozzle is pressed on the upper end of the B hole mandrel, a B shaft pressing nut is screwed on the pressing plate, the bottom end surface of the B shaft pressing nut is pressed against the pressure bearing surface of the B hole pipe joint nozzle, the bottom of the B hole is in communication with a first inner hole channel in the speed regulator shell, the B hole mandrel has a B shaft inner cavity in communication with the B hole pipe joint nozzle, a B shaft side hole is formed in the shaft wall of the B hole mandrel for communication between the B shaft inner cavity and the B hole, the B shaft side hole is in communication with the first inner hole channel, and a first sealing ring is sleeved on the upper part of the B hole mandrel corresponding to the B shaft side hole.

[0019] A C hole mandrel is sealingly inserted into a C hole on the speed regulator shell, a C shaft pressing screw is screwed on the pressing plate, and the bottom end surface of the C shaft pressing screw is pressed against the upper end of the C hole mandrel.

[0020] D hole mandrel, the D hole mandrel is sealed and inserted on the D hole of the governor shell, the upper end of the D hole mandrel is crimped with the D hole pipe connector, the D shaft compression nut is screwed on the pressing plate, the bottom end surface of the D shaft compression nut is crimped with the pressure bearing surface of the D hole pipe connector, the D hole top is communicated with the second inner hole channel in the interior of the governor shell, the D shaft side hole is opened on the wall of the D hole pipe connector and communicated with the D hole top, the D shaft side hole is communicated with the second inner hole channel, the second sealing ring is sleeved on the upper and lower positions of the D hole mandrel corresponding to the D shaft side hole;

[0021] E hole mandrel, the E hole mandrel is sealed and inserted on the E hole of the governor shell, the E shaft compression screw is screwed on the pressing plate, the bottom end surface of the E shaft compression screw is crimped with the upper end of the E hole mandrel;

[0022] F hole mandrel, the F hole mandrel is sealed and inserted on the F hole of the governor shell, the F shaft compression screw is screwed on the pressing plate, the bottom end surface of the F shaft compression screw is crimped with the upper end of the F hole mandrel;

[0023] J hole mandrel, the J hole mandrel is sealed and inserted on the J hole of the governor shell, the upper end of the J hole mandrel is crimped with the J hole pipe connector, the J shaft compression nut is screwed on the pressing plate, the bottom end surface of the J shaft compression nut is crimped with the pressure bearing surface of the J hole pipe connector, the middle part of the J hole is communicated with the third inner hole channel in the interior of the governor shell, the J hole mandrel has the J shaft inner cavity communicated with the J hole pipe connector, the J shaft side hole for communicating the J shaft inner cavity with the J hole is opened on the shaft wall of the J hole mandrel, the J shaft side hole is communicated with the third inner hole channel, the third sealing ring is sleeved on the upper and lower positions of the J hole mandrel corresponding to the J shaft side hole;

[0024] K hole mandrel, the K hole mandrel is sealed and inserted on the K hole of the governor shell, the K shaft compression nut is screwed on the pressing plate, the bottom end surface of the K shaft compression nut is crimped with the upper end of the K hole mandrel;

[0025] L hole mandrel, the L hole mandrel is sealed and inserted on the L hole of the governor shell, the upper end of the L hole mandrel is crimped with the L shaft compression sleeve, the L shaft compression nut is screwed on the pressing plate, the bottom end surface of the L shaft compression nut is crimped with the pressure bearing surface of the L shaft compression sleeve;

[0026] M hole mandrel, the M hole mandrel is sealed and inserted in the M hole on the speed regulator shell, the upper end of the M hole mandrel is crimped with the M hole pipe connector, the M shaft compression nut is screwed on the pressing plate, the bottom end surface of the M shaft compression nut is crimped with the pressure bearing surface of the M hole pipe connector, the M hole top is communicated with the fourth inner hole channel in the speed regulator shell, the M hole mandrel has M shaft inner cavity communicated with the M hole pipe connector, the shaft wall of the M hole mandrel is provided with M shaft side hole for communicating the M shaft inner cavity with the M hole, the M shaft side hole is communicated with the fourth inner hole channel, the upper and lower positions of the M shaft side hole on the M hole mandrel are all sleeved with the fourth sealing ring;

[0027] N hole mandrel, the N hole mandrel is sealed and inserted in the N hole on the speed regulator shell, the N shaft compression sleeve is screwed on the pressing plate, the upper end of the N hole mandrel is crimped with the bottom end surface of the N shaft compression sleeve;

[0028] W hole plug, the W hole plug is sealed and inserted in the W hole on the speed regulator shell, the W hole plug adjusting screw is fixed on the W hole plug, and the W hole plug adjusting screw is screwed with the bottom plate;

[0029] U hole plug, the U hole plug is sealed and inserted in the U hole on the speed regulator shell, the U hole plug adjusting screw is fixed on the U hole plug, and the U hole plug adjusting screw is screwed with the bottom plate;

[0030] T hole plug, the T hole plug is sealed and inserted in the T hole on the speed regulator shell, the T hole plug adjusting screw is fixed on the T hole plug, and the T hole plug adjusting screw is screwed with the bottom plate;

[0031] S hole plug, the S hole plug is sealed and inserted in the S hole on the speed regulator shell, the S hole plug adjusting screw is fixed on the S hole plug, and the S hole plug adjusting screw is screwed with the bottom plate;

[0032] G hole mandrel, the G hole mandrel is sealed and inserted in the G hole on the speed regulator shell, the G shaft compression sleeve is screwed on the pressing plate, and the upper end of the G hole mandrel is crimped with the bottom end surface of the G shaft compression sleeve;

[0033] d hole plug, the d hole plug is sealed and inserted in the d hole on the speed regulator shell, the d hole plug adjusting screw is fixed on the d hole plug, and the d hole plug adjusting screw is screwed with the pressing plate;

[0034] b hole plug, the b hole plug is sealed and inserted in the b hole on the speed regulator shell, the b hole plug adjusting screw is fixed on the b hole plug, and the b hole plug adjusting screw is screwed with the pressing plate.

[0035] The beneficial effects of adopting the above technical solution are: the above-mentioned sealing element can quickly and accurately seal the corresponding holes on the governor housing, and when pressurizing the oil, lubricating oil is injected from the predetermined holes B, D, J and M, so that the oil enters the oil passage inside the governor housing through the corresponding internal channels, thereby verifying the sealing performance of the governor housing. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0037] Figure 1 This is a first-view structural schematic diagram of a device for testing the sealing performance of a part with curved and intersecting inner holes, provided by the present invention.

[0038] Figure 2 This is a second-view structural schematic diagram of a device for testing the sealing performance of a part with curved and intersecting inner holes, provided by the present invention.

[0039] Figure 3 This is a top view of the device for testing the sealing performance of a part with curved and intersecting inner holes, provided by the present invention, after assembly with a speed controller housing.

[0040] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure of the mid-section ZZ.

[0041] Figure 5 for Figure 4 A partial schematic diagram along the P-direction.

[0042] Figure 6 for Figure 3 Schematic diagram of the cross-sectional structure of section II.

[0043] Figure 7 for Figure 3 Schematic diagram of the cross-sectional structure of section II-II.

[0044] Figure 8 for Figure 3 Schematic diagram of the cross-sectional structure of section III-III.

[0045] Figure 9 for Figure 3 Schematic diagram of the cross-sectional structure of section IV-IV.

[0046] Figure 10 for Figure 3A cross-sectional structure schematic view of the middle section V-V.

[0047] Figure 11 For Figure 5 A cross-sectional structure schematic view of the middle section VI-VI. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be apparently and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0049] As Figures 1-11 shown, the embodiments of the present application disclose a device for testing the leakproofness of a part with a curved cross inner hole, comprising:

[0050] A bottom plate 1, two positioning support rods 2 are fixed at the top end of the bottom plate 1 at intervals, a positioning plug-in hole 101 is formed on the top end surface of the bottom plate 1 before the two positioning support rods 2, and a universal bolt 3 is installed on each of the opposite side walls of the bottom plate 1;

[0051] An A hole mandrel 4, the lower end of the A hole mandrel 4 is plug-in fixed in the positioning plug-in hole 101, a speed regulator shell 100 is placed on the top end surface of the bottom plate 1, and an A hole 1001 on the speed regulator shell 100 is plug-in sealed on the A hole mandrel 4;

[0052] A pressing plate 5, the bottom end surface of the pressing plate 5 is press-bonded on the top end surface of the speed regulator shell 100, the upper ends of the two positioning support rods 2 are respectively threaded in the two positioning holes on the pressing plate 5, and a first locking nut 6 is screwed on the upper end of each of the two positioning support rods 2, the bottom end surface of the first locking nut 6 is in press contact with the top end surface of the pressing plate 5, a clamping notch 501 for clamping the two universal bolts 3 is formed on the opposite side walls of the pressing plate 5, a second locking nut 7 is screwed on the universal bolt 3, and the bottom end surface of the second locking nut 7 is in press contact with the top end surface of the pressing plate 5;

[0053] A sealing member 8 for sealing the corresponding hole on the speed regulator shell 100 and a pipe connector 9 for injecting lubricating oil into the corresponding hole on the speed regulator shell 100 are installed on the bottom plate 1 and the pressing plate 5, and the pipe connector 9 is connected with the oil outlet of an oil press through an oil pipe.

[0054] An open washer 10 is press-bonded between the first locking nut 6 and the pressing plate 5.

[0055] An A shaft pressing sleeve 11 is press-bonded on the upper end of the A hole mandrel 4, an A shaft pressing nut 12 is screwed on the pressing plate 5, and the bottom end surface of the A shaft pressing nut 12 is press-bonded with the pressure bearing surface of the A shaft pressing sleeve 11.

[0056] The pipe connection nozzle 9 comprises a B-hole pipe connection nozzle 91, a D-hole pipe connection nozzle 92, a J-hole pipe connection nozzle 93, and an M-hole pipe connection nozzle 94, and the sealing member 8 comprises:

[0057] A B-hole spindle 801 is sealingly inserted into a B-hole 1002 on the governor housing 100, the upper end of the B-hole spindle 801 is crimped with the B-hole pipe connection nozzle 91, a B-shaft compression nut 8011 is screwed on the pressing plate 5, the bottom end surface of the B-shaft compression nut 8011 is crimped with the pressure bearing surface of the B-hole pipe connection nozzle 91, the bottom of the B-hole 1002 is communicated with a first inner hole channel 1003 inside the governor housing 100, the B-hole spindle 801 has a B-shaft inner cavity 80111 communicated with the B-hole pipe connection nozzle 91, a B-shaft side hole 80112 is formed on the shaft wall of the B-hole spindle 801 for communication between the B-shaft inner cavity 80111 and the B-hole 1002, the B-shaft side hole 80112 is communicated with the first inner hole channel 1003, and a first sealing ring (not shown in the figure) is sleeved on the upper position of the B-hole spindle 801 corresponding to the B-shaft side hole 80112;

[0058] A C-hole spindle 802 is sealingly inserted into a C-hole 1004 on the governor housing 100, a C-shaft compression screw 8021 is screwed on the pressing plate 5, and the bottom end surface of the C-shaft compression screw 8021 is crimped with the upper end of the C-hole spindle 802;

[0059] A D-hole spindle 803 is sealingly inserted into a D-hole 1005 on the governor housing 100, the upper end of the D-hole spindle 803 is crimped with the D-hole pipe connection nozzle 92, a D-shaft compression nut 8031 is screwed on the pressing plate 5, the D-shaft compression nut 8031 is crimped with the pressure bearing surface of the D-hole pipe connection nozzle 92, the top of the D-hole 1005 is communicated with a second inner hole channel 1006 inside the governor housing 100, a D-shaft side hole 80311 is formed on the pipe wall of the D-hole pipe connection nozzle 92 for communication between the top of the D-hole 1005 and the second inner hole channel 1006, the D-shaft side hole 80311 is communicated with the second inner hole channel 1006, and a second sealing ring (not shown in the figure) is sleeved on the upper and lower positions of the D-hole spindle 803 corresponding to the D-shaft side hole 80311;

[0060] An E-hole spindle 804 is sealingly inserted into an E-hole 1007 on the governor housing 100, an E-shaft compression screw 8041 is screwed on the pressing plate 5, and the bottom end surface of the E-shaft compression screw 8041 is crimped with the upper end of the E-hole spindle 804;

[0061] An F-hole spindle 805 is sealingly inserted into an F-hole 1008 on the governor housing 100, an F-shaft compression screw 8051 is screwed on the pressing plate 5, and the bottom end surface of the F-shaft compression screw 8051 is crimped with the upper end of the F-hole spindle 805;

[0062] J hole mandrel 806 is sealingly inserted into J hole 1009 on the governor shell 100, the upper end of the J hole mandrel 806 is crimped with the J hole pipe connector 93, the J shaft compression nut 8061 is screwed on the pressing plate 5, the bottom end surface of the J shaft compression nut 8061 is crimped with the pressure bearing surface of the J hole pipe connector 93, the middle part of the J hole 1009 is communicated with the third inner hole channel 1010 inside the governor shell 100, the J hole mandrel 806 has a J shaft inner cavity 80611 communicated with the J hole pipe connector 93, the shaft wall of the J hole mandrel 806 is provided with a J shaft side hole 80612 for communicating the J shaft inner cavity 80611 with the J hole 1009, the J shaft side hole 80612 is communicated with the third inner hole channel 1010, the upper and lower positions of the J hole mandrel 806 corresponding to the J shaft side hole 80612 are both sleeved with a third sealing ring (illustrated in the figure, but not labeled);

[0063] K hole mandrel 807 is sealingly inserted into K hole 1011 on the governor shell 100, the K shaft compression nut 8071 is screwed on the pressing plate 5, the bottom end surface of the K shaft compression nut 8071 is crimped with the upper end of the K hole mandrel 807;

[0064] L hole mandrel 808 is sealingly inserted into L hole 1012 on the governor shell 100, the upper end of the L hole mandrel 808 is crimped with the L shaft compression sleeve 8081, the L shaft compression nut 8082 is screwed on the pressing plate 5, the bottom end surface of the L shaft compression nut 8082 is crimped with the pressure bearing surface of the L shaft compression sleeve 8081;

[0065] M hole mandrel 809 is sealingly inserted into M hole 1013 on the governor shell 100, the upper end of the M hole mandrel 809 is crimped with the M hole pipe connector 94, the M shaft compression nut 8091 is screwed on the pressing plate 5, the bottom end surface of the M shaft compression nut 8091 is crimped with the pressure bearing surface of the M hole pipe connector 94, the top of the M hole 1013 is communicated with the fourth inner hole channel 8014 inside the governor shell 100, the M hole mandrel 809 has a M shaft inner cavity 80911 communicated with the M hole pipe connector 94, the shaft wall of the M hole mandrel 809 is provided with a M shaft side hole 80912 for communicating the M shaft inner cavity 80911 with the M hole 1013, the M shaft side hole 80912 is communicated with the fourth inner hole channel 8014, the upper and lower positions of the M hole mandrel 809 corresponding to the M shaft side hole 80912 are both sleeved with a fourth sealing ring (illustrated in the figure, but not labeled);

[0066] N hole mandrel 810 is sealingly inserted into N hole 1015 on the governor shell 100, the N shaft compression sleeve 8101 is screwed on the pressing plate 5, the upper end of the N hole mandrel 810 is crimped with the bottom end surface of the N shaft compression sleeve 8101;

[0067] W hole plug 811, W hole plug 811 is sealingly inserted into W hole 1016 on the governor housing 100, and W hole plug adjusting screw 8111 is fixed on the W hole plug 811 and screwed with the bottom plate 1;

[0068] U hole plug, the U hole plug is sealingly inserted into the U hole on the governor housing 100, and the U hole plug adjusting screw 812 is fixed on the U hole plug, and the U hole plug adjusting screw 812 is screwed with the bottom plate 1;

[0069] T hole plug, the T hole plug is sealingly inserted into the T hole on the governor housing 100, and the T hole plug adjusting screw 813 is fixed on the T hole plug, and the T hole plug adjusting screw 813 is screwed with the bottom plate 1;

[0070] S hole plug, the S hole plug is sealingly inserted into the S hole on the governor housing 100, and the S hole plug adjusting screw 814 is fixed on the S hole plug, and the S hole plug adjusting screw 814 is screwed with the bottom plate 1;

[0071] G hole mandrel 815, G hole mandrel 815 is sealingly inserted into G hole 1017 on the governor housing 100, and G shaft pressure sleeve 8151 is screwed on the pressure plate 5, and the upper end of the G hole mandrel 815 is pressure connected with the bottom end face of the G shaft pressure sleeve 8151;

[0072] d hole plug 817, d hole plug 817 is sealingly inserted into d hole 1018 on the governor housing 100, and d hole plug adjusting screw 8171 is fixed on the d hole plug 817, and d hole plug adjusting screw 8171 is screwed with the pressure plate 5;

[0073] b hole plug 818, b hole plug 818 is sealingly inserted into b hole 1019 on the governor housing 100, and b hole plug adjusting screw 8181 is fixed on the b hole plug 818, and b hole plug adjusting screw 8181 is screwed with the pressure plate 5.

[0074] A hole mandrel 4, B hole mandrel 801, C hole mandrel 802, D hole mandrel 803, E hole mandrel 804, F hole mandrel 805, J hole mandrel 806, K hole mandrel 807, L hole mandrel 808, M hole mandrel (809), N hole mandrel 810, G hole mandrel 815, and a corresponding sealing ring is sleeved on each plug to realize sealing with the corresponding hole position on the governor housing.

[0075] In use, the bottom plate is placed on the sealed compression test operation table, the A hole mandrel with a sealing ring is installed, which is inserted and fixed in the positioning insertion hole on the bottom plate, then the measured part governor housing is installed on the A hole mandrel, and the positioning and installation work of the governor housing is completed. Figures 3-11As shown, the B hole mandrel, the C hole mandrel, the D hole mandrel, the E hole mandrel, the F hole mandrel, the G hole mandrel, the J hole mandrel, the K hole mandrel, the L hole mandrel, the M hole mandrel, the N hole mandrel, the W hole plug, the U hole plug, the T hole plug, the S hole plug, the d hole plug and the b hole plug with the respective sealing rings are placed in the corresponding B hole, C hole, D hole, E hole, F hole, G hole, J hole, K hole, L hole, M hole, N hole, W hole, U hole, T hole, S hole, d hole and b hole of the speed regulator shell, since some of the mandrels need to be inserted into the product hole, the upper end face is provided with a corresponding compression nut, compression screw or compression sleeve, so as to facilitate the adjustment of the installation position of the mandrel and facilitate the disassembly. According to the product structure and hole depth, the A hole and the L hole need to be provided with an A shaft compression sleeve and an L shaft compression sleeve and installed with a corresponding sealing ring. B, D, J and M are pressure holes, and during the test, oil pressure is injected from the four holes, and the B hole pipe connector, the D hole pipe connector, the J hole pipe connector and the M hole pipe connector are installed on the hole mandrel and installed with a corresponding sealing ring. The compression plate is installed through the two end positioning support rods, and the installation is completed according to the drawing 3- Figure 11 The compression nut, compression screw, compression sleeve and adjusting screw of each hole are installed, and at this time, the installation work of the product pressure test is completed. During the pressure test, the compression nut, compression screw, compression sleeve and adjusting screw are tightened, the two end hinged bolts are buckled and pressed by the second locking nut, and the oil pressure machine is connected to the B, D, J and M hole pipe connectors for pressure test, so as to verify whether the speed regulator shell leaks under the oil pressure of 10 MPa.

[0076] The device seals each hole of the speed regulator shell through the sealing elements of each hole of the speed regulator shell, and positions and compresses the speed regulator shell with the bottom plate and the compression plate, so as to realize the sealing, pressure test and test of the closedness and overall oil pressure resistance of the speed regulator shell with irregular shape, structure and curved and crossed inner hole (oil channel).

[0077] The device can be used as a special clamping device for sealing test of the propeller speed regulator, which can accurately position the speed regulator shell through the A hole mandrel, effectively realize the accurate positioning and installation of each sealing element, and has the advantages of simple structure, convenient operation and high working efficiency.

[0078] In the specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0079] The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to persons of skill in the art, and, while certain modifications are discussed, it is desired to be protected in accordance with the spirit and scope of the application. Therefore, the application is not limited to the specific embodiments shown and described, but only by the scope of the appended claims, unless otherwise specified.

Claims

1. An apparatus for inspecting the tightness of a part having a curved intersecting bore, characterized in that, The utility model relates to a kind of speed regulator shell sealing structure, including: Bottom plate (1), two positioning support rods (2) are fixed with interval at the top end of the bottom plate (1), positioning plug-in hole (101) is set on the top end surface of the bottom plate (1) between the two positioning support rods (2), and knuckle bolt (3) is installed on the opposite two side walls of the bottom plate (1); A hole spindle (4), the lower end of the A hole spindle (4) is inserted and fixed in the positioning plug-in hole (101), and the speed regulator shell (100) is placed on the top end surface of the bottom plate (1), and the A hole (1001) on the speed regulator shell (100) is sealed and inserted in the A hole spindle (4); Pressing plate (5), the bottom end surface of the pressing plate (5) is pressed on the top end surface of the speed regulator shell (100), the upper end of the two positioning support rods (2) is respectively threaded in the two positioning holes on the pressing plate (5), and the upper end of the two positioning support rods (2) is screwed with first locking nut (6), the bottom end surface of the first locking nut (6) is in close contact with the top end surface of the pressing plate (5), and the opposite two side walls of the pressing plate (5) are respectively provided with clamping notches (501) for clamping the two knuckle bolts (3), the knuckle bolt (3) is screwed with second locking nut (7), and the bottom end surface of the second locking nut (7) is in close contact with the top end surface of the pressing plate (5); The bottom plate (1) and the pressing plate (5) are provided with sealing elements (8) for sealing the corresponding holes in the speed regulator shell (100), the pressing plate (5) is provided with pipe connectors (9) for injecting lubricating oil into the corresponding holes in the speed regulator shell (100), and the pipe connectors (9) are connected to the oil outlet of the oil press through oil pipes; the four pipe connectors (9) for pressing lubricating oil are in communication with the four inner holes in the speed regulator shell (100).

2. A device for testing the tightness of a part having a curved intersecting bore according to claim 1, characterized in that, The first locking nut (6) and the pressing plate (5) are pressed with an open washer (10).

3. A device for testing the tightness of a part having a curved intersecting bore according to claim 1 or 2, characterized in that, The upper end of the A hole spindle (4) is pressed with an A shaft pressing sleeve (11), the pressing plate (5) is screwed with an A shaft pressing nut (12), and the bottom end surface of the A shaft pressing nut (12) is in close contact with the pressure surface of the A shaft pressing sleeve (11).

4. The device for testing the tightness of a part with a curved intersecting internal bore according to claim 1 or 2, characterized in that, The pipe connector (9) comprises: B hole pipe connector (91), D hole pipe connector (92), J hole pipe connector (93), M hole pipe connector (94), and the sealing element (8) comprises: B hole mandrel (801), the B hole mandrel (801) is sealed and inserted in the B hole (1002) on the speed regulator shell (100), the upper end of the B hole mandrel (801) is crimped with the B hole pipe connector (91), the B shaft compression nut (8011) is screwed on the pressing plate (5), the bottom end surface of the B shaft compression nut (8011) is crimped with the pressure bearing surface of the B hole pipe connector (91), the bottom of the B hole (1002) is communicated with the first inner hole channel (1003) in the speed regulator shell (100), the B hole mandrel (801) has a B shaft inner cavity (80111) communicated with the B hole pipe connector (91), the shaft wall of the B hole mandrel (801) is provided with a B shaft side hole (80112) for communicating the B shaft inner cavity (80111) with the B hole (1002), the B shaft side hole (80112) is communicated with the first inner hole channel (1003), the B hole mandrel (801) is provided with a first sealing ring at the upper position corresponding to the B shaft side hole (80112); C hole mandrel (802), the C hole mandrel (802) is sealed and inserted in the C hole (1004) on the speed regulator shell (100), the C shaft compression screw (8021) is screwed on the pressing plate (5), the bottom end surface of the C shaft compression screw (8021) is crimped with the upper end of the C hole mandrel (802); D hole mandrel (803), the D hole mandrel (803) is sealed and inserted in the D hole (1005) on the speed regulator shell (100), the upper end of the D hole mandrel (803) is crimped with the D hole pipe connector (92), the D shaft compression nut (8031) is screwed on the pressing plate (5), the D shaft compression nut (8031) is crimped with the pressure bearing surface of the D hole pipe connector (92), the top of the D hole (1005) is communicated with the second inner hole channel (1006) in the speed regulator shell (100), the D hole pipe connector (92) is provided with a D shaft side hole (80311) communicated with the top of the D hole (1005) on the pipe wall, the D shaft side hole (80311) is communicated with the second inner hole channel (1006), the D hole mandrel (803) is provided with a second sealing ring at the upper and lower positions corresponding to the D shaft side hole (80311); E hole mandrel (804), the E hole mandrel (804) is sealed and inserted in the E hole (1007) on the speed regulator shell (100), the E shaft compression screw (8041) is screwed on the pressing plate (5), the bottom end surface of the E shaft compression screw (8041) is crimped with the upper end of the E hole mandrel (804); F hole mandrel (805), the F hole mandrel (805) is sealed and inserted in the F hole (1008) on the speed regulator shell (100), the F shaft compression screw (8051) is screwed on the pressing plate (5), the bottom end surface of the F shaft compression screw (8051) is crimped with the upper end of the F hole mandrel (805); A J hole mandrel (806) is sealingly inserted into a J hole (1009) on the governor housing (100), the upper end of the J hole mandrel (806) is crimped with the J hole pipe connector (93), the pressing plate (5) is screwed with a J shaft compression nut (8061), the bottom end surface of the J shaft compression nut (8061) is crimped with the pressure bearing surface of the J hole pipe connector (93), the middle part of the J hole (1009) is communicated with the third inner hole channel (1010) inside the governor housing (100), the J hole mandrel (806) has a J shaft inner cavity (80611) communicated with the J hole pipe connector (93), the shaft wall of the J hole mandrel (806) is provided with a J shaft side hole (80612) for communicating the J shaft inner cavity (80611) with the J hole (1009), the J shaft side hole (80612) is communicated with the third inner hole channel (1010), the J hole mandrel (806) is sleeved with a third sealing ring at the upper and lower positions corresponding to the J shaft side hole (80612); A K hole mandrel (807) is sealingly inserted into a K hole (1011) on the governor housing (100), the pressing plate (5) is screwed with a K shaft compression nut (8071), the bottom end surface of the K shaft compression nut (8071) is crimped with the upper end of the K hole mandrel (807); An L hole mandrel (808) is sealingly inserted into an L hole (1012) on the governor housing (100), the upper end of the L hole mandrel (808) is crimped with an L shaft compression sleeve (8081), the pressing plate (5) is screwed with an L shaft compression nut (8082), the bottom end surface of the L shaft compression nut (8082) is crimped with the pressure bearing surface of the L shaft compression sleeve (8081); An M hole mandrel (809) is sealingly inserted into an M hole (1013) on the governor housing (100), the upper end of the M hole mandrel (809) is crimped with the M hole pipe connector (94), the pressing plate (5) is screwed with an M shaft compression nut (8091), the bottom end surface of the M shaft compression nut (8091) is crimped with the pressure bearing surface of the M hole pipe connector (94), the top of the M hole (1013) is communicated with a fourth inner hole channel (8014) inside the governor housing (100), the M hole mandrel (809) has an M shaft inner cavity (80911) communicated with the M hole pipe connector (94), the shaft wall of the M hole mandrel (809) is provided with an M shaft side hole (80912) for communicating the M shaft inner cavity (80911) with the M hole (1013), the M shaft side hole (80912) is communicated with the fourth inner hole channel (8014), the M hole mandrel (809) is sleeved with a fourth sealing ring at the upper and lower positions corresponding to the M shaft side hole (80912); N hole mandrel (810), the N hole mandrel (810) is sealed and plugged in the N hole (1015) on the speed regulator shell (100), the N shaft pressure sleeve (8101) is screwed on the pressing plate (5), and the upper end of the N hole mandrel (810) is in pressure connection with the bottom end face of the N shaft pressure sleeve (8101); W hole plug (811), the W hole plug (811) is sealed and plugged in the W hole (1016) on the speed regulator shell (100), the W hole plug (811) is fixed with a W hole plug adjusting screw (8111), and the W hole plug adjusting screw (8111) is screwed with the bottom plate (1); U hole plug, the U hole plug is sealed and plugged in the U hole on the speed regulator shell (100), the U hole plug is fixed with a U hole plug adjusting screw (812), and the U hole plug adjusting screw (812) is screwed with the bottom plate (1); T hole plug, the T hole plug is sealed and plugged in the T hole on the speed regulator shell (100), the T hole plug is fixed with a T hole plug adjusting screw (813), and the T hole plug adjusting screw (813) is screwed with the bottom plate (1); S hole plug, the S hole plug is sealed and plugged in the S hole on the speed regulator shell (100), the S hole plug is fixed with an S hole plug adjusting screw (814), and the S hole plug adjusting screw (814) is screwed with the bottom plate (1); G hole mandrel (815), the G hole mandrel (815) is sealed and plugged in the G hole (1017) on the speed regulator shell (100), the G shaft pressure sleeve (8151) is screwed on the pressing plate (5), and the upper end of the G hole mandrel (815) is in pressure connection with the bottom end face of the G shaft pressure sleeve (8151); D hole plug (817), the D hole plug (817) is sealed and plugged in the D hole (1018) on the speed regulator shell (100), the D hole plug (817) is fixed with a D hole plug adjusting screw (8171), and the D hole plug adjusting screw (8171) is screwed with the pressing plate (5); B hole plug (818), the B hole plug (818) is sealed and plugged in the B hole (1019) on the speed regulator shell (100), the B hole plug (818) is fixed with a B hole plug adjusting screw (8181), and the B hole plug adjusting screw (8181) is screwed with the pressing plate (5).

Images