Air tightness detection device for oil duct of transmission box body

Abstract

The invention discloses an air tightness detection device for an oil duct of a transmission box body. The air tightness detection device comprises a rack, a lifting assembly, a pressing assembly, a bottom plugging assembly, a side plugging assembly, an internal expansion plugging assembly and an air tightness assembly, the pressing assembly and the lifting assembly are arranged on the rack and are vertically arranged at an interval, and the lifting assembly is used for jacking and positioning a tray with a transmission box body; the pressing assembly is used for pressing the transmission box from the position above the transmission box. The bottom plugging assembly is arranged at the top of the lifting assembly and used for plugging an oil duct hole in the bottom of the transmission box. The side face plugging assembly and the internal expansion plugging assembly are arranged on the two side faces of the rack correspondingly and used for plugging oil duct holes in the corresponding side faces of a transmission box body correspondingly. The air tightness detection assembly is used for detecting the air tightness of the oil duct of the transmission box body. According to the invention, the labor intensity of workers can be effectively reduced, the detection efficiency and the detection precision are improved, and the waste of repair cost is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of equipment air tightness detection, relates to a transmission case, and specifically relates to a transmission case oil channel air tightness detection device. Background Art

[0002] During the transmission production process, multiple oil passages for cooling oil, lubricating oil, etc. need to be opened in the transmission case. After the transmission case is produced, the air tightness of the oil passages needs to be tested. For the transmission, the air tightness can directly affect the quality of the transmission assembly. Therefore, during its production process, strict sealing requirements are imposed to ensure its air tightness.

[0003] At present, the detection of air tightness of automobile systems at home and abroad mainly uses gas as the detection medium and measures based on the basic principle of gas pressure change. However, in the existing detection technology, manual detection is usually performed, that is, the oil channel is manually blocked, and then gas is filled into the oil channel, and then the transmission case is placed in a container filled with water to soak and observe whether bubbles are generated. If bubbles are present, it means that the air tightness is not good. This detection method not only has high labor intensity for the staff, low detection efficiency, but also low detection accuracy. If the air tightness defects of the transmission case cannot be detected with high accuracy, the problem will be discovered after the transmission is installed on the vehicle and delivered for use, which will cause serious waste of repair costs. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a transmission case oil channel air tightness detection device, which can effectively reduce the labor intensity of the staff, improve the detection efficiency and detection accuracy, and avoid the waste of rework costs.

[0005] The technical solution of the present invention is achieved in this way: A transmission case oil channel air tightness detection device comprises a frame, a lifting assembly, a pressing assembly, a bottom plugging assembly, a side plugging assembly, an inner expansion plugging assembly and an air tightness detection assembly.

[0006] The clamping assembly and the lifting assembly are arranged on the frame and are spaced apart from each other. The lifting assembly is used for lifting and positioning the pallet with the transmission case; the clamping assembly is used for clamping the transmission case from above the transmission case.

[0007] The bottom blocking assembly is arranged on the top of the lifting assembly and is used for blocking the oil channel hole at the bottom of the transmission case.

[0008] The side sealing assembly and the internal expansion sealing assembly are respectively arranged on the two side surfaces of the frame, and the side sealing assembly and the internal expansion sealing assembly are respectively used to seal the oil channel holes on the corresponding side surfaces of the transmission case.

[0009] The air tightness detection component is used to detect the air tightness of the transmission case oil channel.

[0010] Furthermore, the frame includes a horizontally arranged support platform, support legs vertically arranged at the four corners below the support platform and four columns vertically arranged at the four corners above the support platform, the lifting assembly is arranged on the support platform, and the clamping assembly is arranged on the four columns; at the same time, a support rod is horizontally arranged between two adjacent legs; and anchor brackets are provided under the four legs for adjusting the horizontality of the frame.

[0011] Furthermore, the lifting assembly includes a first cylinder and a horizontally arranged bottom plate, a middle plate, and a top plate, the bottom plate and the top plate are respectively arranged below and above the middle plate, and the upper surface of the top plate is provided with a diamond pin, a cylindrical pin and a bottom blocking assembly; the bottom plate is arranged on a supporting platform.

[0012] The middle plate is arranged on the bottom plate through support columns arranged at the four corners below the middle plate; the first cylinder is arranged on the bottom plate and the piston rod of the first cylinder vertically passes through the middle plate upward to be connected with the top plate to drive the top plate to rise and fall; support blocks are arranged at the four corners below the top plate, and a first through hole is arranged on the middle plate corresponding to the support block below the support block; at the same time, two pads are arranged on the bottom plate, and the two pads can be slidably arranged under the two support blocks respectively, so as to support the support blocks after the top plate is lowered.

[0013] Furthermore, the cushion block is arranged on the base plate through a sliding mechanism, the sliding mechanism includes a second cylinder and a first slide rail, the second cylinder piston rod and the first slide rail are arranged horizontally and in parallel, a first sliding block cooperating with the first slide rail is provided under the cushion block, and the second cylinder piston rod is connected to the cushion block to facilitate driving the cushion block to move horizontally along the first slide rail.

[0014] At the same time, a plurality of second through holes penetrating the upper and lower surfaces of the middle plate are provided on the middle plate, and a first linear bearing is provided at the second through holes. At the same time, a plurality of first guide columns are provided under the top plate, the upper ends of the first guide columns are connected to the top plate, and the lower ends are inserted into the first linear bearing, so as to facilitate the lifting and lowering guidance of the top plate.

[0015] Furthermore, the clamping assembly includes a third cylinder, a horizontally arranged pressure head mounting plate and a clamping mounting plate, the clamping mounting plate and the pressure head mounting plate are spaced apart in the upper and lower directions, the clamping mounting plate is fixed to the tops of four columns, and a number of clamping mechanisms are provided on the pressure head mounting plate for clamping the transmission case; the third cylinder is arranged in the middle of the clamping mounting plate and the third cylinder piston rod is arranged vertically downward and connected to the pressure head mounting plate, second guide columns are provided at the four corners of the pressure head mounting plate, third through holes corresponding to the second guide columns are provided on the clamping mounting plate, and a second linear bearing is provided at the third through hole, the lower end of the second guide column is connected to the pressure head mounting plate, and the upper end passes through the second linear bearing, which is convenient for guiding during the lifting and lowering process of the pressure head mounting plate.

[0016] Furthermore, the clamping mechanism includes a plurality of fourth cylinders arranged on the pressure head mounting plate, the piston rods of the fourth cylinders are arranged vertically downward, and a pressure rod is provided at the lower end of the fourth cylinder, and a pressure head is provided at the lower end of the pressure rod.

[0017] A rectangular ring-shaped connecting plate is horizontally arranged above the clamping mounting plate, the second guide column is correspondingly connected to the connecting plate above, and a number of clamping limit blocks are evenly distributed on the corresponding clamping mounting plate below the connecting plate, and a buffer is arranged above the clamping limit block.

[0018] Furthermore, the side blocking assembly includes a side rail mounting plate, a side blocking mounting plate, a fifth cylinder and a plurality of blocking heads; all the blocking heads are driven by a sixth cylinder horizontally arranged on the side blocking mounting plate.

[0019] There are two side rail mounting plates, which are respectively vertically arranged on the inner sides of the two columns corresponding to the side blocking components, and a second slide rail is arranged on the side rail mounting plate along the length direction of the side rail mounting plate; the side blocking mounting plate is horizontally arranged sideways, and all blocking heads are arranged on the inner side of the side blocking mounting plate, and a second sliding block cooperating with the second slide rail is arranged on the outer side of the side blocking mounting plate, and a cylinder mounting plate is horizontally arranged between the two columns corresponding to the two side rail mounting plates above the two side rail mounting plates, and the fifth cylinder is fixed on the cylinder mounting plate, and at the same time, the piston rod of the fifth cylinder is vertically arranged downward and fixed to the side blocking mounting plate, and a drag chain is arranged between the side blocking mounting plate and the cylinder mounting plate for protecting the wiring harness, so that the fifth cylinder can extend and retract to drive the side blocking mounting plate to rise and fall along the second slide rail, and the wiring harness also rises and falls accordingly.

[0020] Furthermore, the internal expansion sealing assembly includes a base, a seventh cylinder, an eighth cylinder and a sealing mechanism. The base is fixed to the frame, and the base includes a horizontally arranged support plate. The piston rods of the seventh cylinder and the eighth cylinder are horizontally arranged, and the eighth cylinder is connected to the piston rod of the seventh cylinder, and the sealing mechanism is connected to the piston rod of the eighth cylinder. The eighth cylinder can be slidably arranged on the support plate through a cylinder mounting seat, so that the seventh cylinder can be extended and retracted to drive the eighth cylinder and the sealing mechanism to move horizontally.

[0021] Furthermore, a third slide rail is provided on the support plate along the axis of the seventh cylinder and the eighth cylinder, and a third slider cooperating with the third slide rail is provided under the cylinder mounting seat. The third slider is arranged on the third slide rail, so that it can move horizontally under the action of the seventh cylinder; the sealing mechanism includes an internal expansion component mounting seat, a pull rod and a fourth sealing head. The internal expansion component mounting seat is vertically arranged with the eighth cylinder piston rod, the pull rod is horizontally arranged and one end is connected with the eighth cylinder piston rod through the cylinder connecting block, and the other end passes through the through hole on the internal expansion component mounting seat for the pull rod to pass through, and a sealing head base is sleeved on the pull rod corresponding to the outer side of the internal expansion component mounting seat, the fourth sealing head is sleeved on the pull rod and arranged on the outer side of the sealing head base, and a sealing ring is sleeved on the pull rod corresponding to the free end of the pull rod and the fourth sealing head and between the fourth sealing head and the sealing head base.

[0022] Furthermore, the rack is also provided with an electrical cabinet for installing electrical equipment, and also includes a protective cover arranged on the outside of the rack for protecting the equipment.

[0023] Compared with the prior art, the present invention has the following beneficial effects: The air tightness detection device of the present invention is used to perform air tightness detection on the oil channel of the gearbox case. The entire detection process is simple to operate. At the same time, the air tightness detection is performed in an assembly line manner, which can effectively reduce the work intensity of the staff and effectively improve the detection efficiency. In addition, the air tightness detection instrument is used to inflate the oil channel for air tightness detection, which can effectively avoid low detection accuracy due to external factors, thereby effectively improving the detection accuracy and avoiding the need for repair of the transmission due to oil leakage after delivery and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 - A three-dimensional diagram of the airtightness detection device according to the present invention.

[0025] Figure 2 - A perspective view of the rack.

[0026] Figure 3 - A perspective view of the lifting assembly.

[0027] Figure 4 -Stereoscopic view of the clamping assembly.

[0028] Figure 5 -Cross-section of the clamping mechanism Figure 6 -Stereoscopic view of the side closure assembly.

[0029] Figure 7 -Stereoscopic view of the internal expansion plugging assembly.

[0030] Figure 8 -Cross-section of the internal expansion plugging head.

[0031] Fig. 9 -Schematic diagram of the electrical cabinet.

[0032] Fig.10 -Schematic diagram of the hermetic instrument assembly.

[0033] Fig.11 - Schematic diagram of the shield.

[0034] Fig.12 - Schematic diagram of the air tightness detection device of the present invention located in a production line.

[0035] Among them: A-frame; A1-leg; A2-first column; A3-second column; A4-third column; A5-fourth column; A6-ground bracket; A7-side limit block; A8-internal expansion limit block.

[0036] B-lifting assembly; B1-first slide rail; B2-first slider; B3-first linear bearing; B4-bottom plate; B5-second plugging head; B6-support column; B7-second cylinder mounting plate; B8-middle plate; B9-top plate; B10-pad; B11-diamond pin; B12-cylindrical pin; B13-support block; B14-first guide column; B15-first plugging head; B16-first cylinder; B17-second cylinder; B18-plug lifting cylinder.

[0037] C-clamping assembly; C1-clamping mounting plate; C2-pressure head; C3-pressure head mounting plate; C4-pressure rod one; C5-pressure rod two; C6-pressure rod three; C7-pressure rod four; C8-guide cylinder; C9-connecting plate; C10-clamping limit block; C11-fourth cylinder; C12-floating joint one; C13-floating joint two; C14-second linear bearing; C15-third cylinder; C16-second guide column; C17-buffer.

[0038] D-side plugging assembly; D1-blocking block one; D2-blocking block two; D3-side plugging mounting plate; D4-slide rail pressure block; D5-side track mounting plate one; D6-side track mounting plate two; D7-third plugging head No. 1; D8-third plugging head No. 2; D9-third plugging head No. 3; D10-third plugging head No. 4; D11-third plugging head No. 5; D12-second slider; D13-second slide rail; D14-floating joint three; D15-fifth cylinder; D16-sixth cylinder; D17-drag chain; D18-cylinder mounting plate; D19-slide rail pressure block.

[0039] E-internal expansion plugging assembly; E1-base; E2-third slide rail; E3-cylinder connecting seat; E4-third slider; E5-cylinder mounting seat; E6-internal expansion assembly mounting seat; E7-fourth plugging head; E8-plugging head base; E9-pull rod; E10-cylinder connecting block; E11-eighth cylinder; E12-floating joint four; E13-seventh cylinder; E14-first sealing ring; E15-second sealing ring.

[0040] F-Electrical cabinet.

[0041] Air tightness detection component G; includes air tightness detector G1; air control valve G2; mounting plate G3.

[0042] Protective cover H; including aluminum alloy profile H1; acrylic plate H2; door lock H3; hinge H4.

[0043] Tray I.

[0044] Transmission case J. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0046] See also Figure 1 to Figure 12 A transmission case oil channel air tightness detection device includes a frame A, a lifting component B, a pressing component C, a bottom plugging component, a side plugging component D, an inner expansion plugging component E and an air tightness detection component G.

[0047] The clamping assembly C and the lifting assembly B are arranged on the frame A and are spaced apart up and down. The lifting assembly B is used to lift and position the pallet I with the transmission case J; the clamping assembly C is used to clamp the transmission case J from above the transmission case J.

[0048] The bottom plugging assembly is arranged on the top of the lifting assembly B and is used to plug the oil channel hole at the bottom of the transmission case J.

[0049] The side sealing assembly D and the internal expansion sealing assembly E are respectively arranged on the two sides of the frame A, and the side sealing assembly D and the internal expansion sealing assembly E are respectively used to seal the oil channel holes on the corresponding sides of the transmission case J.

[0050] The air tightness detection component G is used to detect the air tightness of the oil channel of the transmission case J.

[0051] In this way, after the transmission case is produced, the six-axis robot arm of the previous process grabs the transmission case and places it on the pallet. The pallet enters the air tightness detection device along the production line. The lifting assembly lifts and positions the pallet of the transmission case, and the pressing assembly presses the transmission case downward from the top of the transmission case, thereby clamping the transmission case between the lifting assembly and the pressing assembly. Then, the bottom plugging assembly on the lifting assembly, the side plugging assembly on the side of the transmission case, and the internal expansion plugging assembly respectively plug the oil channel holes on the transmission case, and then the air tightness detector is used to inflate the internal space of each oil channel of the transmission case to detect the air tightness of the oil channel enclosed space. The entire detection process is simple to operate, and at the same time, it is an assembly line operation when performing air tightness detection, which can effectively reduce the work intensity of the staff, effectively improve the detection efficiency, and effectively avoid low detection accuracy due to external factors (such as staff work experience, operation level, etc.), thereby effectively improving the detection accuracy and avoiding the transmission from being returned for repair due to oil leakage after delivery.

[0052] For specific implementation, see Figure 2 The frame A includes a horizontally arranged support platform, legs A1 vertically arranged at four corners below the support platform, and four columns (respectively a first column A2, a second column A3, a third column A4, and a fourth column A5) vertically arranged at four corners above the support platform. The lifting assembly B is arranged on the support platform, and the clamping assembly C is arranged on the four columns. At the same time, a support rod is horizontally arranged between two adjacent legs A1 to enhance the structural strength of the frame. An anchor bracket A6 is arranged under the four legs A1 to adjust the horizontality of the frame.

[0053] For specific implementation, see Figure 3 The lifting assembly B includes a first cylinder B16 and a horizontally arranged bottom plate B4, a middle plate B8, and a top plate B9. The bottom plate B4 and the top plate B9 are respectively arranged below and above the middle plate B8. The upper surface of the top plate B9 is provided with a diamond pin B11, a cylindrical pin B12 and a bottom blocking assembly; the bottom plate B4 is arranged on a supporting platform.

[0054] The middle plate B8 is arranged on the bottom plate B4 through the support columns B6 arranged at the four corners below the middle plate B8; the first cylinder B16 is arranged on the bottom plate B4 and the piston rod of the first cylinder B16 vertically passes through the middle plate B8 and is connected to the top plate B9 to drive the top plate B9 to rise and fall. Support blocks B13 are arranged at the four corners below the top plate B9, and a first through hole is arranged on the middle plate B8 corresponding to the support block B13. At the same time, two pads B10 are arranged on the bottom plate B4, and the two pads B10 can be slidably arranged under the two support blocks B13 respectively, so as to support the support blocks B13 after the top plate B9 is lowered, thereby achieving the purpose of supporting the top plate. In this way, each time the first cylinder lifts the top plate down, it can be supported on the pads, so that the distance between the top plate and the bottom plate is constant, and the lifting position of the transmission case can be accurately located.

[0055] In specific implementation, the bottom plugging assembly includes a plurality of first plugging heads B15 arranged on the top plate B9. At the same time, the setting position and number of the first plugging heads here are set according to the oil channel holes on the bottom surface of the transmission case. In this embodiment, a plug lifting cylinder B18 is also provided on the middle plate B8. The piston rod of the plug lifting cylinder is vertically upward, and a second plugging head B5 is provided at the top end of the piston rod of the plug lifting cylinder to plug the oil channel holes on the transmission case suspended on the outside of the top plate.

[0056] During specific implementation, the pad B10 is arranged on the base plate B4 through a sliding mechanism, and the sliding mechanism includes a second cylinder B17 and a first slide rail B1. The piston rod of the second cylinder B17 and the first slide rail B1 are arranged horizontally and in parallel. The second cylinder B17 is arranged on the base plate B4 through the second cylinder mounting plate B7. A first slider B2 cooperating with the first slide rail B1 is provided under the pad B10. The piston rod of the second cylinder B17 is connected to the pad B10 to facilitate driving the pad B10 to move horizontally along the first slide rail B1.

[0057] At the same time, a plurality of second through holes penetrating the upper and lower surfaces of the middle plate B8 are provided on the middle plate B8, and a first linear bearing B3 is provided at the second through holes. At the same time, a plurality of first guide columns B14 are provided under the top plate B9. The upper end of the first guide column B14 is connected to the top plate B9, and the lower end is inserted into the first linear bearing B3, so as to facilitate the lifting and lowering guidance of the top plate B9.

[0058] For specific implementation, see Figure 4 and Figure 5The clamping assembly C includes a third cylinder C15, a horizontally arranged pressure head mounting plate C3 and a clamping mounting plate C1. The clamping mounting plate C1 and the pressure head mounting plate C3 are arranged at intervals up and down. The clamping mounting plate C1 is fixed to the tops of four columns, so that the clamping assembly C is arranged on the frame A. A plurality of clamping mechanisms are arranged on the pressure head mounting plate C3 for clamping the transmission case J; the third cylinder C15 is arranged in the middle of the clamping mounting plate C1 and the piston rod of the third cylinder C15 is arranged vertically downward and connected to the pressure head mounting plate C3. Second guide columns C16 are arranged at the four corners of the pressure head mounting plate C3. A third through hole corresponding to the second guide column C16 is arranged on the clamping mounting plate C1, and a second linear bearing C14 is arranged at the third through hole. The lower end of the second guide column C16 is connected to the pressure head mounting plate C3, and the upper end passes through the second linear bearing C14, so as to facilitate guiding during the lifting process of the pressure head mounting plate C3.

[0059] In this way, the clamping mounting plate support is set on the frame, and the third cylinder is set on the clamping mounting plate. The lifting and lowering of the piston rod of the third cylinder can drive the lifting and lowering of the pressure head mounting plate. Before the gearbox case enters the air tightness detection device from the production line, the third cylinder drives the pressure head mounting plate to rise. After the gearbox case enters the air tightness detection device, the third cylinder drives the pressure head mounting plate to descend, so that the clamping mechanism on the pressure head mounting plate acts on the gearbox case to clamp the gearbox case.

[0060] In specific implementation, the clamping mechanism includes a plurality of fourth cylinders C11 arranged on a pressure head mounting plate C3, and the fourth cylinder is arranged vertically downward from a plug rod 1, and a pressure rod is provided at the lower end of the fourth cylinder C11 (a pressure rod is provided under each fourth cylinder, and the four pressure rods are pressure rod 1 C4, pressure rod 2 C5, pressure rod 3 C6 and pressure rod 4 C7), and each pressure rod outer sleeve is provided with a guide cylinder C8, and the lower end of the pressure rod is provided with a pressure head C2.

[0061] A rectangular ring-shaped connecting plate C9 is horizontally provided above the clamping mounting plate C1, and the second guide column C16 is connected to the connecting plate C9 above, and a number of clamping limit blocks C10 are evenly distributed on the corresponding clamping mounting plate below the connecting plate C9. At the same time, a buffer C17 is provided above the clamping limit block C10 to facilitate limiting and buffering during the process of the third cylinder driving the pressure head mounting plate to descend.

[0062] For specific implementation, see Figure 6 The side blocking assembly D includes a side rail mounting plate, a side blocking mounting plate D3, a fifth cylinder D15 and a plurality of third blocking heads, and all the third blocking heads are driven by a sixth cylinder D16 horizontally arranged on the side blocking mounting plate.

[0063] There are two side rail mounting plates (specifically, side rail mounting plate 1 D5 and side rail mounting plate 2 D6), which are respectively vertically arranged on the inner sides of the two columns corresponding to the side blocking assembly D, and a second slide rail D13 is arranged on the side rail mounting plate along the length direction of the side rail mounting plate; the side blocking mounting plate D3 is arranged horizontally on its side, and all third blocking heads are arranged on the inner side of the side blocking mounting plate D3, and a second slider D12 cooperating with the second slide rail D13 is arranged on the outer side of the side blocking mounting plate, and a cylinder mounting plate D18 is horizontally arranged between the two columns corresponding to the two side rail mounting plates, and the fifth cylinder D15 is fixed on the cylinder mounting plate D18, and at the same time, the piston rod of the fifth cylinder D15 is arranged vertically downward and fixed to the side blocking mounting plate D3, and a drag chain D17 is arranged between the side blocking mounting plate D3 and the cylinder mounting plate D18 for protecting the wiring harness, so that the fifth cylinder D15 can extend and retract to drive the side blocking mounting plate D3 to rise and fall along the second slide rail D13, and the wiring harness also rises and falls accordingly.

[0064] In this embodiment, the third plugging head includes the first third plugging head D7, the second third plugging head D8, the third third plugging head D9, the fourth third plugging head D10 and the fifth third plugging head D11, wherein the first third plugging head D7 and the second third plugging head D8 are arranged on the inner side of the side plugging mounting plate through the first plugging block D1, the third third plugging head D9, the fourth third plugging head D10 and the fifth third plugging head D11 are arranged on the inner side of the side plugging mounting plate through the second plugging block D2, and the two sixth cylinders are respectively connected to the first and second plugging blocks to drive the third plugging heads to extend and retract. The second slide rail is provided with a slide rail pressure block D19, and the second slide block is provided with a slide block pressure block D4.

[0065] For specific implementation, see Figure 7 and Figure 8 The internal expansion sealing component E includes a base E1, a seventh cylinder E13, an eighth cylinder E11 and a sealing mechanism. The base E1 is fixed to the frame A. The base E1 includes a horizontally arranged support plate. The piston rods of the seventh cylinder E13 and the eighth cylinder E11 are horizontally arranged, and the eighth cylinder E11 is connected to the piston rod of the seventh cylinder E13. The sealing mechanism is connected to the piston rod of the eighth cylinder E11. The eighth cylinder E11 can be slidably arranged on the support plate through a cylinder mounting seat E5, so that the seventh cylinder E13 can extend and retract to drive the eighth cylinder E11 and the sealing mechanism to move horizontally.

[0066] In specific implementation, a third slide rail E2 is provided on the support plate along the axis of the seventh cylinder E13 and the eighth cylinder E13, a third slider E3 matched with the third slide rail E2 is provided below the cylinder mounting seat E5, and the third slider E3 is arranged on the third slide rail E2, so that it can move horizontally under the action of the seventh cylinder E11; the blocking mechanism includes an internal expansion component mounting seat E6, a pull rod E9 and a fourth blocking head E7, the internal expansion component mounting seat is vertically arranged with the piston rod of the eighth cylinder, the pull rod is horizontally arranged and one end is connected to the eighth cylinder through the cylinder connecting block E10 The piston rod E11 is connected, and the other end passes through the through hole on the internal expansion component mounting seat for the pull rod to pass through. A plugging head base E8 is sleeved on the pull rod corresponding to the outer side of the internal expansion component mounting seat, and the fourth plugging head E7 is sleeved on the pull rod and arranged on the outer side of the plugging head base. A sealing ring is sleeved on the pull rod corresponding to the free end of the pull rod and the fourth plugging head and between the fourth plugging head and the plugging head base, wherein the sealing ring between the free end of the pull rod and the fourth plugging head is the first sealing ring E14, and the sealing ring between the fourth plugging head and the plugging head base is the second sealing ring E15. The seventh cylinder is arranged on the support plate through the cylinder connecting seat E3.

[0067] In this way, when plugging the built-in oil passage hole, after the fourth plugging head is inserted into the oil passage hole, the eighth cylinder drives the pull rod to contract, and the first sealing ring and the second sealing ring are tightened, thereby completing the sealing of the oil passage hole.

[0068] In specific implementation, the rack is also provided with an electrical cabinet F for installing electrical equipment, and also includes a protective cover H arranged outside the rack A for protecting the equipment, and the protective cover includes an aluminum alloy profile H1, an acrylic plate H2, a door lock H3 and a hinge H4, etc. The air tightness detection component G includes an air tightness detector G1 and an air control valve G2, and the air tightness detector G1 and the air control valve G2 are arranged on the rack A through a mounting plate G3.

[0069] Depend on Figure 1 and Figure 2 It can be seen that an internal expansion limiting block A8 for limiting the internal expansion sealing assembly is provided on the supporting platform, and a side limiting block A7 for limiting the side sealing assembly is provided on the inner sides of the two columns corresponding to the side sealing assembly.

[0070] The cylinder piston rod is connected to other parts through floating joints, such as floating joint 1 C12 between the fourth cylinder and the pressure rod in the clamping assembly C, floating joint 2 C13 between the third cylinder and the pressure head mounting plate; floating joint 3 D14 between the fifth cylinder and the side plugging mounting plate in the side plugging assembly; floating joint 4 E12 between the seventh cylinder and the eighth cylinder in the internal expansion plugging assembly. When performing air tightness testing, the pipeline of the air tightness tester is connected to the air inlet opened at the plugging head, so that air can be inflated into the oil channel.

[0071] Finally, it should be noted that the above embodiments of the present invention are only examples for illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes and modifications can be made based on the above description. It is impossible to list all implementation methods here. Any obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A transmission case oil passage air tightness detection device, characterized in that: It includes a frame, a lifting assembly, a clamping assembly, a bottom plugging assembly, a side plugging assembly, an internal expansion plugging assembly and an air tightness detection assembly; The clamping assembly and the lifting assembly are arranged on the frame and are spaced apart from each other. The lifting assembly is used to lift and position the tray with the transmission case. The clamping assembly is used to clamp the transmission case from above. The bottom plugging assembly is arranged on the top of the lifting assembly and is used to plug the oil passage hole at the bottom of the transmission case; The side plugging assembly and the internal expansion plugging assembly are respectively arranged on the two sides of the frame, and the side plugging assembly and the internal expansion plugging assembly are respectively used to plug the oil channel holes on the corresponding sides of the transmission case; The air tightness detection component is used to detect the air tightness of the transmission case oil channel.

2. A transmission case oil passage air tightness detection device according to claim 1, characterized in that: The frame includes a horizontally arranged support platform, support legs vertically arranged at the four corners below the support platform, and four columns vertically arranged at the four corners above the support platform. The lifting assembly is arranged on the support platform, and the clamping assembly is arranged on the four columns. At the same time, a support rod is horizontally arranged between two adjacent legs. Anchor brackets are arranged under the four legs for adjusting the horizontality of the frame.

3. A transmission case oil passage air tightness detection device according to claim 2, characterized in that: The lifting assembly comprises a first cylinder and a bottom plate, a middle plate and a top plate arranged horizontally, wherein the bottom plate and the top plate are arranged below and above the middle plate respectively, and the upper surface of the top plate is provided with a diamond pin, a cylindrical pin and a bottom blocking assembly; the bottom plate is arranged on a supporting platform; The middle plate is arranged on the bottom plate through support columns arranged at the four corners below the middle plate; the first cylinder is arranged on the bottom plate and the piston rod of the first cylinder vertically passes through the middle plate upward to be connected with the top plate to drive the top plate to rise and fall; support blocks are arranged at the four corners below the top plate, and a first through hole is arranged on the middle plate corresponding to the support block below the support block; at the same time, two pads are arranged on the bottom plate, and the two pads can be slidably arranged under the two support blocks respectively, so as to support the support blocks after the top plate is lowered.

4. A transmission case oil passage air tightness detection device according to claim 3, characterized in that: The cushion block is arranged on the bottom plate through a sliding mechanism, the sliding mechanism includes a second cylinder and a first slide rail, the second cylinder piston rod and the first slide rail are arranged horizontally and in parallel, a first sliding block matched with the first slide rail is arranged below the cushion block, and the second cylinder piston rod is connected to the cushion block, so as to drive the cushion block to move horizontally along the first slide rail; At the same time, a plurality of second through holes penetrating the upper and lower surfaces of the middle plate are provided on the middle plate, and a first linear bearing is provided at the second through holes. At the same time, a plurality of first guide columns are provided under the top plate, the upper ends of the first guide columns are connected to the top plate, and the lower ends are inserted into the first linear bearing, so as to facilitate the lifting and lowering guidance of the top plate.

5. A transmission case oil passage air tightness detection device according to claim 2, characterized in that: The clamping assembly includes a third cylinder, a horizontally arranged pressure head mounting plate and a clamping mounting plate. The clamping mounting plate and the pressure head mounting plate are spaced apart from each other in the upper and lower parts. The clamping mounting plate is fixed to the tops of four columns. A number of clamping mechanisms are arranged on the pressure head mounting plate for clamping the transmission case. The third cylinder is arranged in the middle of the clamping mounting plate and the piston rod of the third cylinder is arranged vertically downward and connected to the pressure head mounting plate. Second guide columns are arranged at the four corners of the pressure head mounting plate. A third through hole corresponding to the second guide column is arranged on the clamping mounting plate, and a second linear bearing is arranged at the third through hole. The lower end of the second guide column is connected to the pressure head mounting plate, and the upper end passes through the second linear bearing, which is convenient for guiding during the lifting and lowering process of the pressure head mounting plate.

6. A transmission case oil passage air tightness detection device according to claim 5, characterized in that: The clamping mechanism comprises a plurality of fourth cylinders arranged on a pressure head mounting plate, the piston rods of the fourth cylinders are arranged vertically downward, and a pressure rod is arranged at the lower end of the fourth cylinder, and a pressure head is arranged at the lower end of the pressure rod; A rectangular ring-shaped connecting plate is horizontally arranged above the clamping mounting plate, the second guide column is correspondingly connected to the connecting plate above, and a number of clamping limit blocks are evenly distributed on the corresponding clamping mounting plate below the connecting plate, and a buffer is arranged above the clamping limit block.

7. A transmission case oil passage air tightness detection device according to claim 2, characterized in that: The side plugging assembly includes a side rail mounting plate, a side plugging mounting plate, a fifth cylinder and a plurality of plugging heads; all the plugging heads are driven by a sixth cylinder horizontally arranged on the side plugging mounting plate; There are two side rail mounting plates, which are respectively vertically arranged on the inner sides of the two columns corresponding to the side blocking components, and a second slide rail is arranged on the side rail mounting plate along the length direction of the side rail mounting plate; the side blocking mounting plate is horizontally arranged sideways, and all blocking heads are arranged on the inner side of the side blocking mounting plate, and a second sliding block cooperating with the second slide rail is arranged on the outer side of the side blocking mounting plate, and a cylinder mounting plate is horizontally arranged between the two columns corresponding to the two side rail mounting plates above the two side rail mounting plates, and the fifth cylinder is fixed on the cylinder mounting plate, and at the same time, the piston rod of the fifth cylinder is vertically arranged downward and fixed to the side blocking mounting plate, and a drag chain is arranged between the side blocking mounting plate and the cylinder mounting plate for protecting the wiring harness, so that the fifth cylinder can extend and retract to drive the side blocking mounting plate to rise and fall along the second slide rail, and the wiring harness also rises and falls accordingly.

8. A transmission case oil passage air tightness detection device according to claim 2, characterized in that: The internal expansion sealing assembly includes a base, a seventh cylinder, an eighth cylinder and a sealing mechanism. The base is fixed to the frame, and the base includes a horizontally arranged support plate. The piston rods of the seventh cylinder and the eighth cylinder are horizontally arranged, and the eighth cylinder is connected to the piston rod of the seventh cylinder. The sealing mechanism is connected to the piston rod of the eighth cylinder. The eighth cylinder can be slidably arranged on the support plate through a cylinder mounting seat, so that the seventh cylinder can be extended and retracted to drive the eighth cylinder and the sealing mechanism to move horizontally.

9. A transmission case oil passage air tightness detection device according to claim 8, characterized in that: A third slide rail is provided on the support plate along the axis of the seventh cylinder and the eighth cylinder, and a third slider cooperating with the third slide rail is provided under the cylinder mounting seat. The third slider is arranged on the third slide rail, so that it can move horizontally under the action of the seventh cylinder; the sealing mechanism includes an internal expansion component mounting seat, a pull rod and a fourth sealing head. The internal expansion component mounting seat is vertically arranged with the eighth cylinder piston rod, the pull rod is horizontally arranged and one end is connected with the eighth cylinder piston rod through the cylinder connecting block, and the other end passes through the through hole on the internal expansion component mounting seat for the pull rod to pass through, and a sealing head base is sleeved on the pull rod corresponding to the outer side of the internal expansion component mounting seat, the fourth sealing head is sleeved on the pull rod and arranged on the outer side of the sealing head base, and a sealing ring is sleeved on the pull rod corresponding to the free end of the pull rod and the fourth sealing head and between the fourth sealing head and the sealing head base.

10. The transmission case oil passage air tightness detection device according to claim 1, characterized in that: The rack is also provided with an electrical cabinet for installing electrical equipment, and also includes a protective cover arranged on the outside of the rack for protecting the equipment.

Images