Device for testing leakproofness of part with bent and crossed inner holes

Abstract

The invention discloses a device for testing the leakproofness of a part with a bent and crossed inner hole, and the device comprises a bottom plate, the top end of the bottom plate is fixedly provided with a positioning support rod, the top end of the bottom plate is provided with a positioning insertion hole, and two opposite side walls of the bottom plate are provided with eyelet bolts; the lower end of the hole A mandrel is inserted into the positioning insertion hole, the speed regulator shell is placed at the top end of the bottom plate, and a hole A in the speed regulator shell is inserted into the hole A mandrel in a sealed mode; the bottom end of the pressing plate is connected to the top end of the speed regulator shell in a pressing mode, the upper end of the positioning supporting rod is fixed to the pressing plate, and the two opposite side walls of the pressing plate are each provided with a clamping notch allowing the two swing bolts to be clamped in; the bottom plate and the pressing plate are each provided with a sealing piece used for sealing a corresponding hole in the speed regulator shell and a pipe joint nozzle used for injecting lubricating oil into the corresponding hole in the speed regulator shell. The device can achieve the purposes of sealing and pressing the speed regulator shell which is irregular in shape and structure and has a bent and crossed inner hole (oil way), and testing the leakproofness and the overall oil pressure resistance of the speed regulator shell.

Description

Technical Field

[0001] The present invention relates to the technical field of testing devices, and more particularly to a device for testing the tightness of parts with curved and intersecting inner holes. Background Art

[0002] The propeller speed governor 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 status of the aircraft through the oil circuit pressure and flow control, and can control the amount of oil entering the engine and the angle of the propeller blades to achieve precise control of the aircraft power output. The speed governor housing is an important part of the propeller speed governor. This part is cast with ZL105 cast aluminum and then machined. The internal oil circuit of the part is cast, and then the working area of ​​each hole and the working end face of the part are machined. The oil circuit hole has the characteristics of complex lines, bending and crossing. According to the product performance requirements, the completed speed governor housing needs to be tested for sealing. The lubricating oil is injected into the designated holes of the speed governor housing, while keeping the other holes well sealed. Continue to pressurize and keep the oil pressure below 10MPa (the oil resistance pressure of the speed governor housing in the working state is below 10MPa). The speed governor housing has good sealing, and there is no lubricating oil leakage as a whole. However, since the shape of the speed governor housing is irregular after processing, the holes inside the housing are bent and crossed, the outer end surface has oblique holes and straight holes with irregular distribution, and the oil pressure required for injection is high and the pressure holding time is long, it is difficult to seal all the holes in the housing at the same time and resist the impact of large oil pressure. At present, there is no special device for sealing the propeller speed governor housing.

[0003] Therefore, how to provide a device that can seal, pressurize, and test the oil pressure resistance of a speed regulator housing with irregular shape and structure, and accurately locate and seal each hole of the speed regulator, with a simple structure, easy operation, and high work efficiency to inspect the airtightness of parts with curved and cross inner holes is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0004] In view of this, the present invention provides a device that can seal, pressurize, and test the oil pressure resistance of a speed regulator housing with irregular shape and structure, and can accurately locate and seal each hole of the speed regulator, has a simple structure, is easy to operate, and has high work efficiency, and can inspect the airtightness of parts with curved and cross inner holes.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A device for testing the tightness of a part with a curved and intersecting inner hole, comprising:

[0007] A bottom plate, wherein two positioning support rods are fixed at intervals on the top of the bottom plate, a positioning plug hole is provided on the top surface of the bottom plate in front of the two positioning support rods, and movable bolts are installed on the opposite side walls of the bottom plate;

[0008] A-hole spindle, the lower end of the A-hole spindle is plugged and fixed on the positioning plug hole, the speed regulator housing is placed on the top surface of the bottom plate, and the A-hole seal on the speed regulator housing is plugged on the A-hole spindle;

[0009] A pressure plate, wherein the bottom end surface of the pressure plate is press-connected to the top end surface of the speed regulator housing, the upper ends of the two positioning support rods are respectively inserted into the two positioning holes of the pressure plate, and the upper ends of the two positioning support rods are both screwed with a first locking nut, the bottom end surface of the first locking nut is in tight contact with the top end surface of the pressure plate, and the opposite side walls of the pressure plate are respectively provided with a clamping notch for the two movable bolts to be clamped, and a second locking nut is screwed on the movable bolt, and the bottom end surface of the second locking nut is in tight contact with the top end surface of the pressure plate;

[0010] The base plate and the pressure plate are both equipped with sealing members for sealing the corresponding holes on the speed regulator housing and pipe nozzles for injecting lubricating oil into the corresponding holes on the speed regulator housing. The pipe nozzles are connected to the oil outlet of the hydraulic press through oil pipes.

[0011] It can be known from the above technical scheme that, compared with the prior art, the present invention discloses a device for inspecting the airtightness of parts with curved cross inner holes. When in use, the base plate is placed on the pressure test operating table, the A-hole spindle is plugged into the positioning plug hole, and then the speed regulator housing is placed on the base plate, and the A-hole on the speed regulator housing is plugged into the A-hole spindle, and then the hole position on the speed regulator housing is sealed and blocked with a seal, and a pipe nozzle is installed on the predetermined pressure hole position, and then the pressure plate is installed to pass through the two positioning support rods, and is locked and fixed with a first locking nut, and then the two movable The joint bolts are respectively inserted into the two clamping notches and locked with the second locking nut. At this time, the speed regulator housing is fixed between the base plate and the pressure plate, the pipe nozzle is connected to the oil outlet of the external hydraulic press, the predetermined hole position is pressurized with lubricating oil, and the oil pressure is adjusted to below 10MPa. Keep it for a while and observe whether there is oil leakage on the surface of the speed regulator housing. If there is oil leakage on the surface of the speed regulator housing, it means that the speed regulator housing has casting defects, such as sand holes and cracks. If there is no oil leakage on the surface of the speed regulator housing, it means that the speed regulator housing has good airtightness and no casting defects.

[0012] Therefore, the device can achieve the purpose of sealing, pressurizing, and testing the airtightness and overall oil pressure resistance of a speed regulator housing with irregular shape and structure and curved and crossed inner holes (oil circuits), and can accurately position and seal each hole of the speed regulator, has a simple structure, is easy to operate, and has high work efficiency.

[0013] Furthermore, an open washer is crimped between the first locking nut and the pressing plate.

[0014] The beneficial effect of adopting the above technical solution is: the clamping force of the first locking screw can be increased to ensure that the speed regulator housing can be pressed onto the base plate by the pressure plate, thereby avoiding displacement of the speed regulator housing during installation of the seal and affecting the precise installation of the seal.

[0015] Furthermore, an A-axis pressing sleeve is pressed onto the upper end of the A-hole spindle, an A-axis clamping nut is threaded onto the pressure plate, and a bottom end surface of the A-axis clamping nut is pressed onto a pressure-bearing surface of the A-axis pressing sleeve.

[0016] The beneficial effect of adopting the above technical solution is: by rotating the A-axis clamping nut, the A-axis clamping nut can be crimped onto the A-axis pressing sleeve, and the A-axis pressing sleeve can be crimped onto the A-hole spindle, thereby ensuring that the A-hole spindle can be sealed and stably installed in the A-hole, avoiding the situation where the A-hole spindle is not installed properly.

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

[0018] A B-hole spindle, the B-hole spindle is seal-inserted into the B-hole on the speed regulator housing, the upper end of the B-hole spindle is crimped with the B-hole pipe nozzle, the pressure plate is threaded with a B-axis clamping nut, the bottom end surface of the B-axis clamping nut is crimped with the pressure-bearing surface of the B-hole pipe nozzle, the bottom of the B-hole is connected to the first inner channel inside the speed regulator housing, the B-hole spindle has a B-axis inner cavity connected to the B-hole pipe nozzle, a B-axis side hole for connecting the B-axis inner cavity with the B-hole is opened on the shaft wall of the B-hole spindle, the B-axis side hole is connected to the first inner channel, and a first sealing ring is sleeved on the B-hole spindle corresponding to the upper position of the B-axis side hole;

[0019] A C-hole spindle, wherein the C-hole spindle is sealably inserted into the C-hole on the speed regulator housing, a C-axis clamping screw is threaded onto the pressure plate, and the bottom end surface of the C-axis clamping screw is crimped with the upper end of the C-hole spindle;

[0020] A D-hole spindle, the D-hole spindle is sealably inserted into the D-hole on the speed regulator housing, the D-hole pipe nozzle is crimped on the upper end of the D-hole spindle, a D-axis clamping nut is threaded on the pressure plate, the D-axis clamping nut is crimped on the pressure-bearing surface of the D-hole pipe nozzle, the top of the D-hole is connected to the second inner channel inside the speed regulator housing, a D-axis side hole connected to the top of the D-hole is opened on the pipe wall of the D-hole pipe nozzle, the D-axis side hole is connected to the second inner channel, and a second sealing ring is sleeved on the upper and lower positions of the D-hole spindle corresponding to the D-axis side hole;

[0021] An E-hole spindle, wherein the E-hole spindle is sealably inserted into the E-hole on the speed regulator housing, an E-axis clamping screw is threadedly connected to the pressure plate, and the bottom end surface of the E-axis clamping screw is crimped to the upper end of the E-hole spindle;

[0022] An F-hole spindle, wherein the F-hole spindle is sealably inserted into the F-hole on the speed regulator housing, an F-axis clamping screw is threadedly connected to the pressure plate, and the bottom end surface of the F-axis clamping screw is crimped to the upper end of the F-hole spindle;

[0023] A J-hole spindle, the J-hole spindle is seal-inserted into the J-hole on the speed regulator housing, the upper end of the J-hole spindle is crimped with the J-hole pipe nozzle, the pressure plate is threaded with a J-axis clamping nut, the bottom end surface of the J-axis clamping nut is crimped with the pressure-bearing surface of the J-hole pipe nozzle, the middle of the J-hole is connected with the third inner channel inside the speed regulator housing, the J-hole spindle has a J-axis inner cavity connected with the J-hole pipe nozzle, a J-axis side hole for connecting the J-axis inner cavity with the J-hole is opened on the shaft wall of the J-hole spindle, the J-axis side hole is connected with the third inner channel, and a third sealing ring is sleeved on the upper and lower positions of the J-hole spindle corresponding to the J-axis side hole;

[0024] A K-hole spindle, wherein the K-hole spindle is sealably inserted into the K-hole on the speed regulator housing, a K-axis clamping nut is threadedly connected to the pressure plate, and the bottom end surface of the K-axis clamping nut is press-fitted with the upper end of the K-hole spindle;

[0025] An L-hole spindle, the L-hole spindle is sealably inserted into the L-hole on the speed regulator housing, an L-shaft pressing sleeve is crimped onto the upper end of the L-hole spindle, an L-shaft clamping nut is threaded onto the pressure plate, and the bottom end surface of the L-shaft clamping nut is crimped onto the pressure-bearing surface of the L-shaft pressing sleeve;

[0026] An M-hole spindle, the M-hole spindle is seal-inserted into the M-hole on the speed regulator housing, the upper end of the M-hole spindle is crimped with the M-hole pipe nozzle, the pressure plate is threaded with an M-axis clamping nut, the bottom end surface of the M-axis clamping nut is crimped with the pressure-bearing surface of the M-hole pipe nozzle, the top of the M-hole is connected with the fourth inner channel inside the speed regulator housing, the M-hole spindle has an M-axis inner cavity connected with the M-hole pipe nozzle, an M-axis side hole for connecting the M-axis inner cavity with the M-hole is opened on the shaft wall of the M-hole spindle, the M-axis side hole is connected with the fourth inner channel, and a fourth sealing ring is sleeved on the upper and lower positions of the M-hole spindle corresponding to the M-axis side hole;

[0027] An N-hole spindle, the N-hole spindle is seal-inserted into the N-hole on the speed regulator housing, an N-axis pressing sleeve is threadedly connected to the pressing plate, and the upper end of the N-hole spindle is pressed against the bottom end surface of the N-axis pressing sleeve;

[0028] A W-hole plug, the W-hole plug is sealably inserted into the W-hole on the speed regulator housing, a W-hole plug adjusting screw is fixed on the W-hole plug, and the W-hole plug adjusting screw is screwed to the bottom plate;

[0029] A U-hole plug, wherein the U-hole plug is sealably inserted into the U-hole on the speed regulator housing, a U-hole plug adjusting screw is fixed on the U-hole plug, and the U-hole plug adjusting screw is screwed to the bottom plate;

[0030] A T-hole plug, wherein the T-hole plug is sealably inserted into the T-hole on the speed regulator housing, a T-hole plug adjusting screw is fixed on the T-hole plug, and the T-hole plug adjusting screw is screwed to the bottom plate;

[0031] An S-hole plug, wherein the S-hole plug is sealably inserted into the S-hole on the speed regulator housing, an S-hole plug adjusting screw is fixed on the S-hole plug, and the S-hole plug adjusting screw is screwed to the bottom plate;

[0032] A G-hole spindle, wherein the G-hole spindle is sealably inserted into the G-hole on the speed regulator housing, a G-axis pressing sleeve is threadedly connected to the pressing plate, and the upper end of the G-hole spindle is pressed against the bottom end surface of the G-axis pressing sleeve;

[0033] A d-hole plug is sealably inserted into the d-hole on the speed regulator housing, a d-hole plug adjusting screw is fixed on the d-hole plug, and the d-hole plug adjusting screw is threadedly connected to the pressure plate;

[0034] The b hole is blocked, and the b hole blocking seal is inserted into the b hole on the speed regulator housing. A b hole blocking adjustment screw is fixed on the b hole blocking, and the b hole blocking adjustment screw is threadedly connected to the pressure plate.

[0035] The beneficial effect of adopting the above technical solution is that the above sealing member can quickly and accurately seal the corresponding holes on the speed regulator housing, and when the oil is pressurized, lubricating oil is injected from the predetermined holes of hole B, hole D, hole J, and hole M, so that the oil enters the internal oil path of the speed regulator housing through the corresponding inner hole, thereby verifying the sealing of the speed regulator housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0037] Figure 1 A schematic structural diagram of a first perspective of a device for inspecting the tightness of a part with a curved and intersecting inner hole provided by the present invention.

[0038] Figure 2 A schematic structural diagram of a second viewing angle of a device for inspecting the tightness of a part with a curved and intersecting inner hole provided by the present invention.

[0039] Figure 3 A schematic diagram of the top view of the structure of a device for inspecting the tightness of a part with a curved and cross inner hole provided by the present invention after being assembled with a speed regulator housing.

[0040] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of the middle section ZZ.

[0041] Figure 5 for Figure 4 Partial schematic diagram of the P direction.

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

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

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

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

[0046] Fig.10 for Figure 3Schematic diagram of the cross-sectional structure of the middle section VV.

[0047] Fig.11 for Figure 5 Schematic diagram of the cross-sectional structure of the middle section VI-VI. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] like Figure 1-Figure 11 As shown, the embodiment of the present invention discloses a device for inspecting the tightness of a part with a curved and intersecting inner hole, comprising:

[0050] A bottom plate 1, two positioning support rods 2 are fixed at intervals on the top of the bottom plate 1, a positioning insertion hole 101 is opened on the top surface of the bottom plate 1 in front of the two positioning support rods 2, and movable bolts 3 are installed on the opposite side walls of the bottom plate 1;

[0051] A-hole spindle 4, the lower end of A-hole spindle 4 is plugged and fixed on the positioning plug hole 101, the speed regulator housing 100 is placed on the top surface of the bottom plate 1, and the A-hole 1001 on the speed regulator housing 100 is sealed and plugged on the A-hole spindle 4;

[0052] The pressure plate 5, the bottom end surface of the pressure plate 5 is pressed on the top surface of the speed regulator housing 100, the upper ends of the two positioning support rods 2 are respectively inserted into the two positioning holes on the pressure plate 5, and the upper ends of the two positioning support rods 2 are both screwed with the first locking nut 6, the bottom end surface of the first locking nut 6 is pressed and contacted with the top surface of the pressure plate 5, and the opposite side walls of the pressure plate 5 are respectively provided with a clamping notch 501 for two movable bolts 3 to be clamped, and the movable bolts 3 are screwed with a second locking nut 7, and the bottom end surface of the second locking nut 7 is pressed and contacted with the top surface of the pressure plate 5;

[0053] The base plate 1 and the pressure plate 5 are both provided with sealing members 8 for sealing the corresponding holes on the speed regulator housing 100 and a pipe nozzle 9 for injecting lubricating oil into the corresponding holes on the speed regulator housing 100. The pipe nozzle 9 is connected to the oil outlet of the hydraulic press through an oil pipe.

[0054] An open washer 10 is crimped between the first locking nut 6 and the pressure plate 5 .

[0055] The upper end of the A-hole spindle 4 is pressed with an A-axis pressing sleeve 11 , and the pressing plate 5 is threaded with an A-axis clamping nut 12 . The bottom end surface of the A-axis clamping nut 12 is pressed with the pressure-bearing surface of the A-axis pressing sleeve 11 .

[0056] The pipe connection nozzle 9 includes: 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. The sealing member 8 includes:

[0057] The B-hole spindle 801 is sealed and inserted into the B-hole 1002 on the speed regulator housing 100. The upper end of the B-hole spindle 801 is crimped with the B-hole pipe nozzle 91. The pressure plate 5 is screwed with a B-axis clamping nut 8011. The bottom end surface of the B-axis clamping nut 8011 is crimped with the pressure-bearing surface of the B-hole pipe nozzle 91. The bottom of the B-hole 1002 is connected to the first inner channel 1003 inside the speed regulator housing 100. The shaft 801 has a B-shaft inner cavity 80111 connected to the B-hole pipe nozzle 91, and a B-shaft side hole 80112 for connecting the B-shaft inner cavity 80111 with the B-hole 1002 is opened on the shaft wall of the B-hole mandrel 801, and the B-shaft side hole 80112 is connected to the first inner channel 1003. A first sealing ring is sleeved at the upper position of the B-hole mandrel 801 corresponding to the B-shaft side hole 80112 (shown schematically in the figure, but not marked);

[0058] A C-hole spindle 802 is sealed and inserted into a C-hole 1004 on the speed regulator housing 100. A C-axis clamping screw 8021 is screwed onto the pressure plate 5. The bottom end surface of the C-axis clamping screw 8021 is pressed against the upper end of the C-hole spindle 802.

[0059] D-hole spindle 803, D-hole spindle 803 is sealed and inserted into D-hole 1005 on governor housing 100, D-hole pipe nozzle 92 is crimped on the upper end of D-hole spindle 803, D-axis clamping nut 8031 ​​is screwed on pressure plate 5, D-axis clamping nut 8031 ​​is crimped with the pressure-bearing surface of D-hole pipe nozzle 92, the top of D-hole 1005 is connected with the second inner channel 1006 inside governor housing 100, D-hole pipe nozzle 92 is provided with D-axis side hole 80311 connected with the top of D-hole 1005 on the tube wall, D-axis side hole 80311 is connected with the second inner channel 1006, and the upper and lower positions of D-hole spindle 803 corresponding to D-axis side hole 80311 are sleeved with second sealing rings (shown schematically in the figure, but not marked);

[0060] An E-hole spindle 804 is sealed and inserted into an E-hole 1007 on the speed regulator housing 100. An E-axis clamping screw 8041 is screwed onto the pressure plate 5. The bottom end surface of the E-axis clamping screw 8041 is crimped to the upper end of the E-hole spindle 804.

[0061] An F-hole spindle 805 is sealed and inserted into an F-hole 1008 on the speed regulator housing 100. An F-axis clamping screw 8051 is screwed onto the pressure plate 5. The bottom end surface of the F-axis clamping screw 8051 is crimped to the upper end of the F-hole spindle 805.

[0062] The J-hole spindle 806 is sealed and inserted into the J-hole 1009 on the speed regulator housing 100. The upper end of the J-hole spindle 806 is crimped with the J-hole pipe nozzle 93. The pressure plate 5 is threaded with a J-axis clamping nut 8061. The bottom end surface of the J-axis clamping nut 8061 is crimped with the pressure-bearing surface of the J-hole pipe nozzle 93. The middle of the J-hole 1009 is connected to the third inner channel 1010 inside the speed regulator housing 100. The shaft 806 has a J-shaft inner cavity 80611 connected to the J-hole pipe nozzle 93, and a J-shaft side hole 80612 for connecting the J-shaft inner cavity 80611 with the J-hole 1009 is opened on the shaft wall of the J-hole mandrel 806. The J-shaft side hole 80612 is connected to the third inner channel 1010, and the upper and lower positions of the J-shaft side hole 80612 on the J-hole mandrel 806 are sleeved with a third sealing ring (shown schematically in the figure, but not marked);

[0063] A K-hole spindle 807 is sealed and inserted into a K-hole 1011 on the speed regulator housing 100. A K-axis clamping nut 8071 is screwed onto the pressure plate 5. The bottom end surface of the K-axis clamping nut 8071 is press-fitted with the upper end of the K-hole spindle 807.

[0064] An L-hole spindle 808 is sealed and inserted into the L-hole 1012 on the speed regulator housing 100. An L-axis pressing sleeve 8081 is pressed on the upper end of the L-hole spindle 808. An L-axis clamping nut 8082 is screwed on the pressure plate 5. The bottom end surface of the L-axis clamping nut 8082 is pressed against the pressure-bearing surface of the L-axis pressing sleeve 8081.

[0065] The M-hole spindle 809 is sealed and inserted into the M-hole 1013 on the speed regulator housing 100. The upper end of the M-hole spindle 809 is crimped with the M-hole pipe nozzle 94. The M-axis clamping nut 8091 is screwed on the pressure plate 5. The bottom end surface of the M-axis clamping nut 8091 is crimped with the pressure-bearing surface of the M-hole pipe nozzle 94. The top of the M-hole 1013 is connected to the fourth inner channel 8014 inside the speed regulator housing 100. The shaft 809 has an M-shaft inner cavity 80911 connected to the M-hole pipe nozzle 94, and an M-shaft side hole 80912 for connecting the M-shaft inner cavity 80911 with the M-hole 1013 is opened on the shaft wall of the M-hole spindle 809. The M-shaft side hole 80912 is connected to the fourth inner channel 8014, and the upper and lower positions of the M-shaft side hole 80912 on the M-hole spindle 809 are sleeved with a fourth sealing ring (shown schematically in the figure, but not marked);

[0066] N-hole spindle 810, the N-hole spindle 810 is sealed and inserted into the N-hole 1015 on the speed regulator housing 100, an N-axis pressing sleeve 8101 is screwed on the pressing plate 5, and the upper end of the N-hole spindle 810 is pressed against the bottom end surface of the N-axis pressing sleeve 8101;

[0067] A W-hole plug 811 is sealed and inserted into the W-hole 1016 on the speed regulator housing 100, and a W-hole plug adjusting screw 8111 is fixed on the W-hole plug 811, and the W-hole plug adjusting screw 8111 is screwed to the bottom plate 1;

[0068] The U-hole plug is sealed and inserted into the U-hole on the speed regulator housing 100, and a U-hole plug adjusting screw 812 is fixed on the U-hole plug, and the U-hole plug adjusting screw 812 is screwed to the bottom plate 1;

[0069] The T-hole plug is sealed and inserted into the T-hole on the speed regulator housing 100. A T-hole plug adjusting screw 813 is fixed on the T-hole plug. The T-hole plug adjusting screw 813 is screwed to the bottom plate 1.

[0070] The S hole plug is sealed and inserted into the S hole on the speed regulator housing 100, and an S hole plug adjusting screw 814 is fixed on the S hole plug, and the S hole plug adjusting screw 814 is screwed to the bottom plate 1;

[0071] A G-hole spindle 815 is sealed and inserted into a G-hole 1017 on the speed regulator housing 100. A G-axis pressing sleeve 8151 is screwed onto the pressing plate 5. The upper end of the G-hole spindle 815 is pressed against the bottom end surface of the G-axis pressing sleeve 8151.

[0072] The d hole plug 817 is sealed and inserted into the d hole 1018 on the speed regulator housing 100. A d hole plug adjusting screw 8171 is fixed on the d hole plug 817. The d hole plug adjusting screw 8171 is screwed to the pressure plate 5.

[0073] The b hole plug 818 is sealed and inserted into the b hole 1019 on the speed regulator housing 100 . A b hole plugging adjustment screw 8181 is fixed on the b hole plug 818 . The b hole plugging adjustment screw 8181 is threadedly connected to the pressure plate 5 .

[0074] The A hole spindle 4, the B hole spindle 801, the C hole spindle 802, the D hole spindle 803, the E hole spindle 804, the F hole spindle 805, the J hole spindle 806, the K hole spindle 807, the L hole spindle 808, the M hole spindle (809), the N hole spindle 810, the G hole spindle 815 and each plug are all provided with corresponding sealing rings to achieve sealing with the corresponding holes on the speed regulator housing.

[0075] When in use, place the base plate on the sealing pressure test operating table, install the A-hole spindle with a sealing ring, plug it into the positioning plug-in hole on the base plate, and then install the speed regulator housing of the tested part on the A-hole spindle to complete the positioning and installation of the speed regulator housing. Figure 3-Figure 11As shown in the figure, the B-hole spindle, C-hole spindle, D-hole spindle, E-hole spindle, F-hole spindle, G-hole spindle, J-hole spindle, K-hole spindle, L-hole spindle, M-hole spindle, N-hole spindle, W-hole plug, U-hole plug, T-hole plug, S-hole plug, d-hole plug, and b-hole plug with their 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 housing. Since some spindles need to go deep into the product holes, the upper end surface is equipped with corresponding clamping nuts or clamping screws or compression sleeves, etc., which makes it convenient to adjust the installation position of the spindle and facilitate disassembly. According to the product structure and hole depth, A-axis compression sleeves and L-axis compression sleeves need to be installed on A and L holes and corresponding sealing rings are installed. B, D, J, and M are pressure holes. During the test, oil pressure is injected from the above 4 holes. Install the B hole pipe nozzle, D hole pipe nozzle, J hole pipe nozzle, and M hole pipe nozzle on the mandrel of each hole and install the corresponding sealing ring. Install the pressure plate through the positioning support rods at both ends, as shown in Figure 3- Fig.11 Install the clamping nuts, clamping screws, compression sleeves, and adjusting screws at each hole position, and the installation work of the product pressure test is now completed. During the pressure test, tighten the clamping nuts, clamping screws, compression sleeves, and adjusting screws, fasten the live bolts at both ends and tighten them with the second locking nut, and connect the external hydraulic press to the B, D, J, and M hole pipe nozzles for pressure testing to verify whether there is oil leakage from the speed regulator housing under an oil pressure of 10MPa.

[0076] The device seals each aperture of the governor housing through the sealing members of each hole of the governor housing, and positions and presses the governor housing with the base plate and the pressure plate, thereby achieving the purpose of sealing, pressing, and testing the tightness and overall oil pressure resistance of the governor housing with irregular shape and structure and curved and crossed inner holes (oil paths).

[0077] Advantages and beneficial effects of the present invention: The device can be used as a special clamping device for propeller speed governor sealing test. It accurately positions the speed governor housing through the A-hole spindle, thereby effectively realizing the accurate positioning and installation of each seal, and has a simple structure, convenient operation and high work efficiency.

[0078] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments 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 above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for testing the tightness of parts with curved and intersecting inner holes, characterized in that: include: A bottom plate (1), wherein two positioning support rods (2) are fixed at intervals on the top of the bottom plate (1), a positioning plug hole (101) is provided on the top surface of the bottom plate (1) in front of the two positioning support rods (2), and movable bolts (3) are installed on opposite side walls of the bottom plate (1); A-hole spindle (4), the lower end of the A-hole spindle (4) is plugged and fixed on the positioning plug hole (101), the speed regulator housing (100) is placed on the top end surface of the bottom plate (1), and the A-hole (1001) on the speed regulator housing (100) is sealed and plugged on the A-hole spindle (4); A pressure plate (5), the bottom end surface of the pressure plate (5) is pressed onto the top end surface of the speed regulator housing (100), the upper ends of the two positioning support rods (2) are respectively inserted into the two positioning holes on the pressure plate (5), and the upper ends of the two positioning support rods (2) are both screwed with a first locking nut (6), the bottom end surface of the first locking nut (6) is in tight contact with the top end surface of the pressure plate (5), and the opposite side walls of the pressure plate (5) are respectively provided with a clamping notch (501) for the two movable bolts (3) to be clamped, and the movable bolts (3) are screwed with a second locking nut (7), and the bottom end surface of the second locking nut (7) is in tight contact with the top end surface of the pressure plate (5); The base plate (1) and the pressure plate (5) are both provided with sealing members (8) for sealing corresponding holes on the speed regulator housing (100) and pipe nozzles (9) for injecting lubricating oil into corresponding holes on the speed regulator housing (100); the pipe nozzles (9) are connected to the oil outlet of the hydraulic press via an oil pipe.

2. A device for testing the tightness of parts with curved and intersecting inner holes according to claim 1, characterized in that: An open washer (10) is crimped between the first locking nut (6) and the pressing plate (5).

3. A device for testing the tightness of parts with curved and intersecting inner holes according to claim 1 or 2, characterized in that: The upper end of the A-hole spindle (4) is press-fitted with an A-axis pressing sleeve (11), and the pressing plate (5) is threadedly connected with an A-axis clamping nut (12), and the bottom end surface of the A-axis clamping nut (12) is press-fitted with the pressure-bearing surface of the A-axis pressing sleeve (11).

4. A device for testing the tightness of parts with curved and intersecting inner holes according to claim 1 or 2, characterized in that: The pipe joint (9) comprises: a B-hole pipe joint (91), a D-hole pipe joint (92), a J-hole pipe joint (93), and an M-hole pipe joint (94); and the sealing member (8) comprises: A B-hole spindle (801) is sealed and inserted into a B-hole (1002) on the speed regulator housing (100); the upper end of the B-hole spindle (801) is crimped with the B-hole pipe nozzle (91); a B-axis clamping nut (8011) is threadedly connected to the pressure plate (5); the bottom end surface of the B-axis clamping nut (8011) is crimped with the pressure-bearing surface of the B-hole pipe nozzle (91); the bottom of the B-hole (1002) is crimped with the first inner channel (1002) inside the speed regulator housing (100). 03), the B-hole spindle (801) has a B-axis inner cavity (80111) connected to the B-hole pipe nozzle (91), a B-axis side hole (80112) for connecting the B-axis inner cavity (80111) with the B-hole (1002) is opened on the shaft wall of the B-hole spindle (801), the B-axis side hole (80112) is connected to the first inner channel (1003), and a first sealing ring is sleeved on the upper position of the B-hole spindle (801) corresponding to the B-axis side hole (80112); A C-hole spindle (802), the C-hole spindle (802) is sealed and inserted into a C-hole (1004) on the speed regulator housing (100), a C-axis clamping screw (8021) is screwed onto the pressure plate (5), and the bottom end surface of the C-axis clamping screw (8021) is crimped to the upper end of the C-hole spindle (802); A D-hole spindle (803) is sealed and inserted into a D-hole (1005) on the speed regulator housing (100); the upper end of the D-hole spindle (803) is crimped with the D-hole pipe nozzle (92); a D-axis clamping nut (8031) is threadedly connected to the pressure plate (5); the D-axis clamping nut (8031) is crimped with the pressure-bearing surface of the D-hole pipe nozzle (92); the top of the D-hole (1005) is The D-hole pipe nozzle (92) is connected to the second inner channel (1006) inside the speed regulator housing (100), a D-axis side hole (80311) connected to the top of the D-hole (1005) is opened on the wall of the D-hole pipe nozzle (92), the D-axis side hole (80311) is connected to the second inner channel (1006), and a second sealing ring is sleeved at the upper and lower positions of the D-hole mandrel (803) corresponding to the D-axis side hole (80311); An E-hole spindle (804), the E-hole spindle (804) is sealed and inserted into the E-hole (1007) on the speed regulator housing (100), an E-axis clamping screw (8041) is screwed onto the pressure plate (5), and the bottom end surface of the E-axis clamping screw (8041) is crimped to the upper end of the E-hole spindle (804); An F-hole spindle (805), the F-hole spindle (805) is sealed and inserted into an F-hole (1008) on the speed regulator housing (100), an F-axis clamping screw (8051) is screwed onto the pressure plate (5), and the bottom end surface of the F-axis clamping screw (8051) is crimped to the upper end of the F-hole spindle (805); A J-hole spindle (806) is sealed and inserted into a J-hole (1009) on the speed regulator housing (100); the upper end of the J-hole spindle (806) is crimped with the J-hole pipe nozzle (93); a J-axis clamping nut (8061) is threadedly connected to the pressure plate (5); the bottom end surface of the J-axis clamping nut (8061) is crimped with the pressure-bearing surface of the J-hole pipe nozzle (93); the middle part of the J-hole (1009) is crimped with the third inner channel (101) inside the speed regulator housing (100). 0), the J-hole spindle (806) has a J-axis inner cavity (80611) connected to the J-hole pipe nozzle (93), a J-axis side hole (80612) for connecting the J-axis inner cavity (80611) with the J-hole (1009) is opened on the shaft wall of the J-hole spindle (806), the J-axis side hole (80612) is connected to the third inner channel (1010), and the upper and lower positions of the J-hole spindle (806) corresponding to the J-axis side hole (80612) are sleeved with third sealing rings; A K-hole spindle (807), the K-hole spindle (807) is sealed and inserted into a K-hole (1011) on the speed regulator housing (100), a K-axis clamping nut (8071) is threaded on the pressure plate (5), and the bottom end surface of the K-axis clamping nut (8071) is press-fitted with the upper end of the K-hole spindle (807); An L-hole spindle (808), the L-hole spindle (808) is sealed and inserted into the L-hole (1012) on the speed regulator housing (100), an L-axis pressing sleeve (8081) is pressed on the upper end of the L-hole spindle (808), an L-axis clamping nut (8082) is threaded on the pressure plate (5), and the bottom end surface of the L-axis clamping nut (8082) is pressed against the pressure-bearing surface of the L-axis pressing sleeve (8081); An M-hole spindle (809) is sealingly inserted into an M-hole (1013) on the speed regulator housing (100); the upper end of the M-hole spindle (809) is crimped with the M-hole pipe nozzle (94); an M-axis clamping nut (8091) is threadedly connected to the pressure plate (5); the bottom end surface of the M-axis clamping nut (8091) is crimped with the pressure-bearing surface of the M-hole pipe nozzle (94); the top of the M-hole (1013) is crimped with the fourth inner channel (8011) inside the speed regulator housing (100); 4), the M-hole spindle (809) has an M-axis inner cavity (80911) connected to the M-hole pipe nozzle (94), an M-axis side hole (80912) for connecting the M-axis inner cavity (80911) with the M-hole (1013) is opened on the shaft wall of the M-hole spindle (809), the M-axis side hole (80912) is connected to the fourth inner channel (8014), and the upper and lower positions of the M-hole spindle (809) corresponding to the M-axis side hole (80912) are sleeved with fourth sealing rings; An N-hole spindle (810), the N-hole spindle (810) is sealed and inserted into an N-hole (1015) on the speed regulator housing (100), an N-axis pressing sleeve (8101) is threadedly connected to the pressing plate (5), and the upper end of the N-hole spindle (810) is pressed against the bottom end surface of the N-axis pressing sleeve (8101); A W-hole plug (811), the W-hole plug (811) is sealed and inserted into the W-hole (1016) on the speed regulator housing (100), a W-hole plug adjusting screw (8111) is fixed on the W-hole plug (811), and the W-hole plug adjusting screw (8111) is screwed to the bottom plate (1); A U-hole plug, the U-hole plug seal is inserted into the U-hole on the speed regulator housing (100), a U-hole plug adjustment screw (812) is fixed on the U-hole plug, and the U-hole plug adjustment screw (812) is screwed to the bottom plate (1); A T-hole plug, the T-hole plug seal is inserted into the T-hole on the speed regulator housing (100), a T-hole plug adjustment screw (813) is fixed on the T-hole plug, and the T-hole plug adjustment screw (813) is screwed to the bottom plate (1); An S-hole plug, the S-hole plug seal is inserted into the S-hole on the speed regulator housing (100), an S-hole plug adjustment screw (814) is fixed on the S-hole plug, and the S-hole plug adjustment screw (814) is screwed to the bottom plate (1); A G-hole spindle (815), the G-hole spindle (815) is sealed and inserted into the G-hole (1017) on the speed regulator housing (100), a G-axis pressing sleeve (8151) is screwed onto the pressing plate (5), and the upper end of the G-hole spindle (815) is pressed against the bottom end surface of the G-axis pressing sleeve (8151); A d-hole plug (817), wherein the d-hole plug (817) is sealed and inserted into a d-hole (1018) on the speed regulator housing (100), and a d-hole plug adjusting screw (8171) is fixed to the d-hole plug (817), and the d-hole plug adjusting screw (8171) is screwed to the pressure plate (5); The b hole plug (818) is sealed and inserted into the b hole (1019) on the speed regulator housing (100), and a b hole plug adjustment screw (8181) is fixed on the b hole plug (818), and the b hole plug adjustment screw (8181) is threadedly connected to the pressure plate (5).

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