Engine cylinder cover air passage sealing performance testing device

Abstract

The invention provides an engine cylinder cover air passage sealing performance testing device which comprises a table body, a cylinder cover assembly, two side supporting plates fixed to the top faces of the two sides of the table body, a plurality of first electric rollers and second electric rollers connected between the two side supporting plates, and cushion supporting assemblies arranged between the first electric rollers and the second electric rollers. The clamping and measuring mechanism stretches across the two sides of the table body, the top of the clamping and measuring mechanism is of a liftable structure, and a pressing and locking plate is connected to the interior of the liftable structure on the top of the clamping and measuring mechanism and arranged on the top of the cushion supporting assembly. According to the invention, the cylinder cover assembly is conveyed to the cushion support assembly, the top surface of the cushion support assembly can be used for supporting, meanwhile, a gasket is positioned and sealed on the bottom surface of a cover body, a lifting structure of the clamping and detecting mechanism is driven to descend, a pressing and locking plate presses a pressing and locking clamp to be clamped on a movable rod, and then the clamping and detecting assembly is used for clamping the cylinder cover assembly for sealing detection. And the efficiency and the stability of engine cylinder cover assembly and air tightness detection are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of engine cylinder head processing equipment, and in particular to an engine cylinder head air passage sealing test device. Background Art

[0002] As a core component of an internal combustion engine, the cylinder head is typically made of high-strength aluminum alloy or cast iron and fixedly mounted atop the engine cylinder block. Its primary function is to form a sealed combustion chamber, along with the cylinder block and cylinder head gasket, providing the critical space for the compression and ignition of the fuel-fuel mixture. The cylinder head incorporates complex coolant circulation channels and lubricant flow paths, respectively, to dissipate the intense heat generated by combustion and lubricate components such as the valve train. Maintaining an absolutely tight seal in the combustion chamber is a key technical requirement for this component.

[0003] The cylinder head gasket (or head gasket), located between the cylinder block and cylinder head, is centrally responsible for sealing the combustion chamber. A seal failure can lead to gas mixture leakage, causing reduced engine power, difficulty starting, and increased fuel consumption. High-temperature, high-pressure gas can also enter the cooling water channels, causing abnormal cooling system pressure or even boiling, or contaminate the oil channels, compromising the integrity of the lubrication system. Therefore, testing the seal of the cylinder head assembly is essential for ensuring reliable engine operation.

[0004] Currently, leak testing requires a step-by-step process: first, a compression clamp is secured to the gasket's movable rod on specialized assembly equipment, completing the pre-assembly of the cylinder head and gasket; then, the assembly is transferred to airtightness testing equipment for testing. This process has significant drawbacks: the separation of assembly and testing leads to repeated positioning and clamping, which not only prolongs the process cycle and reduces production efficiency, but also introduces the risk of positioning errors due to tooling changes. Existing technologies lack an integrated solution, making it difficult to meet the industry's demand for efficient and high-precision leak testing. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides an engine cylinder head air duct sealing test device, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] An engine cylinder head air duct sealing test device includes a table body and a cylinder head assembly, two side support plates fixed to the top surfaces of both sides of the table body, a plurality of first and second motorized rollers connected between the two side support plates, a pad support assembly arranged between the first and second motorized rollers, a clamping and testing mechanism arranged across both sides of the table body, the top of the clamping and testing mechanism being a liftable structure, a pressure locking plate connected to the liftable structure at the top of the clamping and testing mechanism, the pressure locking plate being arranged on the top of the pad support assembly, the pressure locking plate being used to press-fit the cylinder head assembly conveyed to the top surface of the pad support assembly, and clamping structures being provided on both sides of the clamping and testing mechanism for clamping on both sides of the cylinder head assembly to test sealing.

[0008] The cylinder head assembly includes a cover body, multiple air holes opened on both sides of the cover body, multiple movable rods connected to the inside of the cover body, a gasket connected to the bottom end of the movable rod, a compression spring and a pressure plate sleeved on the outer wall of the movable rod, a pressure locking clip inserted into the inside of the pressure plate, the pressure plate is arranged on the top of the compression spring, the pressure locking clip is pressed and clamped on the outer wall of the movable rod through the pressure locking plate, the gasket is inserted into the bottom surface of the cover body, and the gasket is arranged on the top surface of the pad support assembly by translation.

[0009] Furthermore, the clamping and measuring mechanism includes two first limit plates fixed to the bottom surface of the table body, a first motor arranged on the bottom surface of the first limit plate, a gear connected to the top end of the first motor, a gear plate slidably connected to the inside of the first limit plate, and the gear plate is provided with two connecting plates fixed to the top surface of one side of the gear plate, a first push plate spanning the top surfaces of the two connecting plates fixed near the side support plate, a support plate fixed to the top side wall of the first push plate, a moving and measuring assembly arranged on the outer wall of the first push plate, one side of the gear plate is meshed with the gear, the support plate is slidably fitted on the top surface of the side support plate, one side of the moving and measuring assembly is fitted and closed on the side wall of the cover body, the two groups of moving and measuring assemblies are mirror-imaged about the vertical center line of the table body, and the locking plate is connected between the two groups of moving and measuring assemblies.

[0010] Furthermore, the moving and testing assembly includes two brackets fixed to the side walls of the first push plate, a screw rotatably connected to the inside of the two brackets, a second motor arranged on the side wall of one bracket, the rotating end of the second motor is fixedly connected to one end of the screw, a push block threadedly sleeved on the outer wall of the screw, a fixed frame fixed to the side wall of the push block, a fixed plate connected to the side wall of the fixed frame, a sealing and testing component passing through the inside of the fixed plate, and two groups of connecting and pressing components connected to the side wall of the fixed plate, both groups of connecting and pressing components are fixedly connected to the side wall of the pressure locking plate, and the bottom surface of the fixed plate slides in contact with the top surface of the support plate.

[0011] Furthermore, the sealing and testing components include multiple support plates fixed to the side walls of the fixed plate, an air pump arranged on the top surface of the support plate, an air pipe connected to one end of the air pump, a pressure gauge connected to the top surface of the air pipe, a baffle sleeved on the outer walls of the multiple air pipes, and multiple sealing tubes fixed to the side walls of the baffles. One end of the air pipe is connected to the inside of the sealing tube, and the sealing tube is used to cooperate with and be inserted into the inside of the air hole.

[0012] Furthermore, the outer wall of the opening of the sealing tube away from the baffle is a right-angle structure.

[0013] Furthermore, two compensation blocks are fixed on one side of the locking plate, the compensation block is fixedly connected to the connecting pressure component on the side away from the locking plate, and the other side of the locking plate is fixedly connected to the other two connecting pressure components. A plurality of first through holes are opened inside the locking plate, and the first through holes are used to insert the top end of the movable rod.

[0014] Furthermore, the sealing and testing component also includes a positioning frame, which is fixed to the side wall of the baffle and is used to fit the stopper on the side wall of the cover. The positioning frame is a U-shaped structure, and the side of the positioning frame away from the baffle is a bent structure.

[0015] Furthermore, the continuous pressure component includes a pneumatic rod fixed to the side wall of the fixed plate, a second push plate connected to the telescopic top end of the pneumatic rod, a lifting plate with an inverted L-shaped structure fixed to the side wall of the second push plate, a guide cylinder sleeved on one side of the lifting plate, a second limit plate fixed to the top surface of the lifting plate, a positioning plate fixed to the top surface of the guide cylinder, a guide rod connected to the side wall of the positioning plate, a spring sleeved on the outer wall of the guide rod, one end of the guide rod passes through and is connected to the inside of the second limit plate, and one side of the guide cylinder is fixedly connected to the side wall of the pressure locking plate.

[0016] Furthermore, the pad support assembly includes a support box arranged between the first electric roller and the second electric roller, a plurality of connecting rods connected to both sides of the support box, the connecting rods are connected to the inner wall of the side support plate at one end away from the support box, a plurality of second through holes are opened on the top and bottom surfaces of the support box, and inclined guide plates are fixed on both end surfaces of the support box, and the support box is used to fit and support the bottom surface of the gasket.

[0017] Furthermore, there is a stepped structure between the side wall of the cover and the air hole, one side of the support plate is plugged into the bottom surface of the stepped structure of the side wall of the cover, and the top surface of the support plate away from the first push plate is a right-angle structure.

[0018] The present invention provides an engine cylinder head air duct sealing test device. Compared with the prior art, it has the following advantages:

[0019] 1. By transporting the cylinder head assembly onto the backing assembly, the top surface of the backing assembly can be used for support, while the gasket is positioned and sealed to the bottom surface of the cover body. The lifting structure of the clamping and testing mechanism is driven down, and the locking plate presses the locking clamp down to fit on the movable rod. The clamping and testing assembly is then used to clamp the cylinder head assembly for sealing testing, thereby improving the efficiency and stability of engine cylinder head assembly and airtightness testing.

[0020] 2. The first motor synchronously drives the two first push plates to move toward the side support plates, so that the two sets of moving and testing components are clamped on both sides of the cover body to position the entire cylinder head assembly, so that the locking plate can be accurately pressed down and installed, and the assembled engine cylinder head can be tested for sealing. The operation is simple and efficient.

[0021] 3. Before the cylinder head assembly is transported as a whole to the top surface of the cushion support assembly, the side sealing component can be clamped to the side wall of the cover body by driving the first push plate to position the cylinder head assembly as a whole, and the screw can be driven to rotate by the second motor to make the sealing and testing component move synchronously with the cylinder head assembly to ensure positioning. After the cylinder head assembly is assembled, the sealing and testing component can be used to directly test the cylinder head assembly for sealing as soon as possible, thereby improving the stability and efficiency of the transportation and inspection of the cylinder head assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It shows a schematic structural diagram of the cylinder head assembly in a testing state according to the present invention;

[0024] Figure 2 Shows a schematic diagram of the overall structure of the present invention;

[0025] Figure 3 Shows a schematic diagram of the overall bottom structure of the present invention;

[0026] Figure 4 Shows a schematic structural diagram of the clamping and measuring mechanism of the present invention;

[0027] Figure 5 Shows a schematic structural diagram of the mobile measurement component of the present invention;

[0028] Figure 6 It shows a schematic diagram of the partial structure of the sealing and testing component of the present invention;

[0029] Figure 7 It shows a schematic structural diagram of the connecting and pressing component of the present invention;

[0030] Figure 8 Shows a schematic structural diagram of the locking plate of the present invention;

[0031] Figure 9 Shows a schematic structural diagram of the cushion support assembly of the present invention;

[0032] Figure 10 Shows a schematic structural diagram of the cylinder head assembly of the present invention;

[0033] Figure 11 A cross-sectional view of the connection structure between the movable rod and the internal cover body of the present invention is shown;

[0034] Figure 12 It shows a schematic structural diagram of the assembled state of the press-locking clip and the movable rod of the present invention;

[0035] In the figure: 100, table body; 110, side support plate; 200, first motor roller; 300, second motor roller; 400, clamping mechanism; 410, first motor; 420, first limit plate; 430, tooth plate; 440, connecting plate; 450, inserting plate; 460, first push plate; 470, moving and measuring assembly; 471, second motor; 472, bracket; 473, screw; 474, push block; 475, fixing frame; 476, fixing plate; 477, sealing and measuring component; 4771, air pump; 4772, support plate; 4773, air guide tube; 4774, barometer; 4775, baffle; 4776, positioning frame; 4777 , insert sealing cylinder; 478, connecting pressure component; 4781, pneumatic rod; 4782, second push plate; 4783, lifting plate; 4784, second limit plate; 4785, guide cylinder; 4786, positioning plate; 4787, guide rod; 4788, spring; 480, gear; 500, pressure locking plate; 510, first through hole; 520, compensation block; 600, pad support assembly; 610, support box; 611, second through hole; 620, connecting rod; 630, inclined guide plate; 700, cylinder head assembly; 710, cover body; 720, air hole; 730, movable rod; 740, pressure plate; 750, pressure locking clamp; 760, compression spring; 770, gasket. DETAILED DESCRIPTION

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0037] Example

[0038] In order to solve the technical problems in the background technology, the following engine cylinder head air duct sealing test device is provided:

[0039] Combine Figures 1-12As shown, the present invention provides an engine cylinder head air duct sealing test device, which includes a table body 100 and a cylinder head assembly 700, two side support plates 110 fixed to the top surfaces of both sides of the table body 100, a plurality of first electric rollers 200 and second electric rollers 300 connected between the two side support plates 110, a pad support assembly 600 arranged between the first electric rollers 200 and the second electric rollers 300, a clamping mechanism 400 arranged across both sides of the table body 100, the top of the clamping mechanism 400 is a liftable structure, a pressure locking plate 500 is connected to the liftable structure on the top of the clamping mechanism 400, the pressure locking plate 500 is arranged on the top of the pad support assembly 600, and the pressure locking plate 500 is used to press-fit the cylinder head assembly 700 conveyed on the top surface of the pad support assembly 600, and the two sides of the clamping mechanism 400 are clamping structures for clamping on both sides of the cylinder head assembly 700 to detect sealing;

[0040] The cylinder head assembly 700 includes a cover body 710, a plurality of air holes 720 extending through both sides of the cover body 710, a plurality of movable rods 730 extending through the cover body 710 and connected thereto, a gasket 770 connected to the bottom end of the movable rod 730, a compression spring 760 and a pressure plate 740 sleeved on the outer wall of the movable rod 730, a pressure locking clip 750 inserted into the inner part of the pressure plate 740, the pressure plate 740 being disposed on the top of the compression spring 760, the pressure locking clip 750 being pressed and clamped to the outer wall of the movable rod 730 by the pressure locking plate 500, a gasket 770 inserted into the bottom surface of the cover body 710, and the gasket 770 being disposed on the top surface of the cushion support assembly 600 by translation.

[0041] By transporting the cylinder head assembly 700 to the pad support assembly 600, the top surface of the pad support assembly 600 can be used for support, and at the same time, the gasket 770 can be positioned and sealed on the bottom surface of the cover body 710, driving the lifting structure of the clamping mechanism 400 to descend, and the locking plate 500 presses down the locking clamp 750 to be clamped on the movable rod 730, and then the clamping assembly is used to clamp the cylinder head assembly 700 for sealing testing, thereby improving the efficiency and stability of the engine cylinder head assembly and air tightness testing.

[0042] In this embodiment, the clamping mechanism 400 includes two first limit plates 420 fixed to the bottom surface of the table body 100, a first motor 410 provided on the bottom surface of the first limit plate 420, a gear 480 connected to the top of the first motor 410, a toothed plate 430 slidably connected to the inside of the first limit plate 420, and the toothed plate 430 is provided with two connecting plates 440 fixed to the top surface of one side of the toothed plate 430, which cross the two connecting plates fixed on the side close to the side support plate 110. The first push plate 460 on the top surface of the plate 440, the inserting plate 450 fixed to the top side wall of the first push plate 460, the moving detection assembly 470 set on the outer wall of the first push plate 460, one side of the tooth plate 430 is meshed with the gear 480, the inserting plate 450 is slidably attached to the top surface of the side support plate 110, and one side of the moving detection assembly 470 is attached and closed to the side wall of the cover body 710. The two sets of moving detection assemblies 470 are mirrored about the vertical center line of the table body 100, and the locking plate 500 is connected between the two sets of moving detection assemblies 470;

[0043] The two first push plates 460 are synchronously driven by the first motor 410 to move toward the side support plate 110, so that the two sets of moving and measuring components 470 are clamped on both sides of the cover body 710 to position the cylinder head assembly 700 as a whole, so that the locking plate 500 can be accurately pressed down and installed, and the assembled engine cylinder head can be tested for sealing. The operation is simple and efficient.

[0044] In this embodiment, the moving and testing component 470 includes two brackets 472 fixed to the side walls of the first push plate 460, a screw 473 rotatably connected to the inside of the two brackets 472, a second motor 471 provided on the side wall of one bracket 472, a rotating end of the second motor 471 fixedly connected to one end of the screw 473, a push block 474 threadedly sleeved on the outer wall of the screw 473, a fixing frame 475 fixed to the side wall of the push block 474, a fixing plate 476 connected to the side wall of the fixing frame 475, a sealing and testing component 477 penetrating the inside of the fixing plate 476, two groups of connecting and pressing components 478 connected to the side wall of the fixing plate 476, both groups of connecting and pressing components 478 are fixedly connected to the side wall of the pressure locking plate 500, and the bottom surface of the fixing plate 476 slidably fits the top surface of the inserting plate 450;

[0045] Before the cylinder head assembly 700 is transported as a whole to the top surface of the cushion support assembly 600, the side sealing component can be clamped to the side wall of the cover body 710 by driving the first push plate 460 to position the cylinder head assembly 700 as a whole, and the screw 473 can be driven to rotate by the second motor 471 to make the sealing and testing component 477 move synchronously with the cylinder head assembly 700 to ensure positioning. After the cylinder head assembly 700 is assembled, the sealing and testing component 477 can be used to directly test the sealing of the cylinder head assembly 700 as soon as possible, thereby improving the stability and efficiency of the transportation and testing of the cylinder head assembly 700.

[0046] In this embodiment, the sealing and testing component 477 includes a plurality of support plates 4772 fixed to the side walls of the fixing plate 476, an air pump 4771 disposed on the top surface of the support plate 4772, an air guide tube 4773 connected to one end of the air pump 4771, a pressure gauge 4774 connected to the top surface of the air guide tube 4773, a baffle 4775 sleeved on the outer wall of the plurality of air guide tubes 4773, and a plurality of sealing tubes 4777 fixed to the side walls of the baffle 4775. One end of the air guide tube 4773 is connected to the interior of the sealing tube 4777, and the sealing tube 4777 is used to cooperate with and be inserted into the interior of the air hole 720.

[0047] By fitting the baffle 4775 to the side wall of the cover body 710, multiple sealing tubes 4777 can be inserted into the air hole 720, and multiple air pumps 4771 can be used for synchronous inflation to improve the inflation efficiency. The values ​​of each pressure gauge 4774 can be observed, thereby improving the efficiency of the inflation detection and sealing operation.

[0048] In this embodiment, the outer wall of the opening of the sealing tube 4777 away from the baffle 4775 is a right-angled structure; the sealing tube 4777 with a right-angled structure can ensure that the sealing tube 4777 is guided and accurately inserted into the air hole 720.

[0049] In this embodiment, two compensation blocks 520 are fixed on one side of the locking plate 500. The compensation block 520 is fixedly connected to the connecting pressure component 478 on the side away from the locking plate 500, and the other side of the locking plate 500 is fixedly connected to the other two connecting pressure components 478. A plurality of first through holes 510 are opened inside the locking plate 500, and the first through holes 510 are used to insert the top end of the movable rod 730.

[0050] In this embodiment, the sealing and testing component 477 also includes a positioning frame 4776, which is fixed to the side wall of the baffle 4775. The positioning frame 4776 is used to fit the side wall of the cover body 710. The positioning frame 4776 is a U-shaped structure, and the side of the positioning frame 4776 away from the baffle 4775 is a bent structure.

[0051] In this embodiment, the connecting pressure component 478 includes a pneumatic rod 4781 fixed to the side wall of the fixed plate 476, a second push plate 4782 connected to the telescopic top end of the pneumatic rod 4781, a lifting plate 4783 of an inverted L-shaped structure fixed to the side wall of the second push plate 4782, a guide cylinder 4785 sleeved on one side of the lifting plate 4783, a second limiting plate 4784 fixed to the top surface of the lifting plate 4783, a positioning plate 4786 fixed to the top surface of the guide cylinder 4785, a guide rod 4787 connected to the side wall of the positioning plate 4786, a spring 4788 sleeved on the outer wall of the guide rod 4787, one end of the guide rod 4787 passes through the interior of the second limiting plate 4784, and one side of the guide cylinder 4785 is fixedly connected to the side wall of the pressure locking plate 500;

[0052] When the sealing and testing component 477 is translated to clamp the cover body 710 into position and perform a sealing test, the lifting plate 4783 is inserted into the guide cylinder 4785 to adapt to the clamping operation of the sealing and testing component 477, and the second limit plate 4784 is used to translate the compression spring 4788 to ensure that the position of the locking plate 500 is positioned when the lifting plate 4783 moves.

[0053] In this embodiment, the cushion support assembly 600 includes a support box 610 disposed between the first motorized roller 200 and the second motorized roller 300, a plurality of connecting rods 620 connected to both sides of the support box 610, and an end of the connecting rod 620 away from the support box 610 is connected to the inner wall of the side support plate 110. The top and bottom surfaces of the support box 610 are both provided with a plurality of second through holes 611. Both end surfaces of the support box 610 are fixed with inclined guide plates 630. The support box 610 is used to fit and support the bottom surface of the gasket 770.

[0054] When the cover body 710 is moved to the top surface of the support box 610, the stable assembly of the cylinder head assembly 700 is facilitated, and when performing a sealing test, the second through hole 611 structure is provided to avoid complete blocking of the bottom surface of the gasket 770, thereby facilitating the sealing test.

[0055] In this embodiment, a stepped structure is formed between the side wall of the cover 710 and the air hole 720. One side of the inserting plate 450 is plugged into the bottom surface of the stepped structure of the side wall of the cover 710. The top surface of the inserting plate 450 away from the first push plate 460 is a right-angled structure.

[0056] When clamping the cover body 710, the support plate 450 is inserted and supported on the bottom surface of the stepped structure of the side wall of the cover body 710 to ensure the stability of the cylinder head assembly 700 during assembly and sealing testing.

[0057] The working principle and use process of the present invention:

[0058] Press first Figures 1-12 The cylinder cover assembly 700 that has not been clamped is transported as a whole by the first electric roller 200, and the first motor 410 on the bottom of the table body 100 is started to drive the tooth plate 430 to move, and the first push plate 460 is moved toward the side support plate 110. At the same time, the movement of the first push plate 460 drives the baffle 4775 to move toward the cover body 710, and the positioning frame 4776 stops and fits the cover body 710 to position it. The support plate 450 moves toward the side wall of the cover body 710, and the fixed plate 476 drives the lifting plate 4783 of the continuous pressing component 478 to move toward the pressing and locking plate 500, so that the lifting plate 4783 continues to be inserted into the guide cylinder 4785, and the second limit plate 4784 compresses the spring 4788;

[0059] Until it is plugged into the stepped structure of the cover 710, the baffle 4775 is fitted on the side wall of the cover 710, and the multiple plug-in sealing cylinders 4777 are plugged into the air holes 720 of the cover 710, and then the second motor 471 is started to drive the screw 473 to rotate, so that the moving component 470 synchronously drives the cylinder cover component 700 to move horizontally to the top of the support box 610. At this time, the gaskets 770 connected to the movable rods 730 and the bottom of the cover 710 are connected. The surfaces are all in contact with the top surface of the support box 610, so that the gasket 770 remains sealed and in contact with the bottom surface of the cover body 710. At this time, the pneumatic rod 4781 is activated to pull down the second push plate 4782, and the lifting plate 4783 drives the locking plate 500 to descend, pressing the locking clip 750 downward, and the top end of the movable rod 730 passes through the first through hole 510 of the locking plate 500. The locking clip 750 is clamped to the side wall of the movable rod 730, completing the clamping of the cylinder head assembly 700.

[0060] Finally, start the air pump 4771 to fill air into the cylinder head assembly 700, and observe the internal air pressure value through the pressure gauge 4774 to confirm the sealing of the cylinder head assembly 700. After the inspection, the cylinder head assembly 700 is released and continues to be transported by the second electric roller 300.

[0061] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An engine cylinder head air duct sealing test device, characterized by: It includes a table body and a cylinder head assembly, two side support plates fixed to the top surfaces of both sides of the table body, a plurality of first and second electric rollers connected between the two side support plates, a pad support assembly arranged between the first and second electric rollers, a clamping and testing mechanism arranged across both sides of the table body, the top of the clamping and testing mechanism is a liftable structure, a pressure locking plate is connected to the liftable structure on the top of the clamping and testing mechanism, the pressure locking plate is arranged on the top of the pad support assembly, the pressure locking plate is used to press-fit the cylinder head assembly conveyed to the top surface of the pad support assembly, and the two sides of the clamping and testing mechanism are clamping structures used to clamp on both sides of the cylinder head assembly to detect the sealing; The cylinder head assembly includes a cover body, multiple air holes opened on both sides of the cover body, multiple movable rods connected to the inside of the cover body, a gasket connected to the bottom end of the movable rod, a compression spring and a pressure plate sleeved on the outer wall of the movable rod, a pressure locking clip inserted into the inside of the pressure plate, the pressure plate is arranged on the top of the compression spring, the pressure locking clip is pressed and clamped on the outer wall of the movable rod through the pressure locking plate, the gasket is inserted into the bottom surface of the cover body, and the gasket is arranged on the top surface of the pad support assembly by translation.

2. The engine cylinder head air passage sealing test device according to claim 1, characterized in that: The clamping and measuring mechanism includes two first limit plates fixed to the bottom surface of the table body, a first motor arranged on the bottom surface of the first limit plate, a gear connected to the top end of the first motor, and a gear plate slidably connected to the inside of the first limit plate. The gear plate is provided with two connecting plates fixed to the top surface of one side of the gear plate, a first push plate spanning the top surfaces of the two connecting plates fixed near the side support plate, a support plate fixed to the top side wall of the first push plate, and a moving and measuring assembly arranged on the outer wall of the first push plate. One side of the gear plate is meshed with the gear, the support plate slides in contact with the top surface of the side support plate, and one side of the moving and measuring assembly is in contact and closed on the side wall of the cover body. The two groups of moving and measuring assemblies are mirror-imaged about the vertical center line of the table body, and the locking plate is connected between the two groups of moving and measuring assemblies.

3. The engine cylinder head air passage sealing test device according to claim 2, characterized in that: The moving and testing assembly includes two brackets fixed to the side walls of the first push plate, a screw rotatably connected to the inside of the two brackets, a second motor arranged on the side wall of one bracket, the rotating end of the second motor is fixedly connected to one end of the screw, a push block threadedly sleeved on the outer wall of the screw, a fixing frame fixed to the side wall of the push block, a fixing plate connected to the side wall of the fixing frame, a sealing and testing component passing through the inside of the fixing plate, and two groups of connecting and pressing components connected to the side wall of the fixing plate. The two groups of connecting and pressing components are fixedly connected to the side wall of the pressure locking plate, and the bottom surface of the fixing plate slides in contact with the top surface of the inserting plate.

4. The engine cylinder head air passage sealing test device according to claim 3, characterized in that: The sealing and testing components include multiple support plates fixed to the side walls of the fixed plate, an air pump arranged on the top surface of the support plate, an air pipe connected to one end of the air pump, a pressure gauge connected to the top surface of the air pipe, a baffle sleeved on the outer walls of the multiple air pipes, and multiple sealing tubes fixed to the side walls of the baffles. One end of the air pipe is connected to the inside of the sealing tube, and the sealing tube is used to cooperate and be plugged into the inside of the air hole.

5. The engine cylinder head air passage sealing test device according to claim 4, characterized in that: The outer wall of the opening of the sealing cylinder away from the baffle is a right-angle structure.

6. The engine cylinder head air passage sealing test device according to claim 3, characterized in that: Two compensation blocks are fixed on one side of the locking plate, and the compensation block is fixedly connected to the connecting pressure component on the side away from the locking plate, and the other side of the locking plate is fixedly connected to the other two connecting pressure components. A plurality of first through holes are opened inside the locking plate, and the first through holes are used to insert the top end of the movable rod.

7. The engine cylinder head air passage sealing test device according to claim 4, characterized in that: The sealing and testing component also includes a positioning frame, which is fixed to the side wall of the baffle and is used to fit the stopper on the side wall of the cover. The positioning frame is a U-shaped structure, and the side of the positioning frame away from the baffle is a bent structure.

8. The engine cylinder head air passage sealing test device according to claim 6, characterized in that: The continuous pressure component includes a pneumatic rod fixed to the side wall of the fixed plate, a second push plate connected to the telescopic top end of the pneumatic rod, a lifting plate with an inverted L-shaped structure fixed to the side wall of the second push plate, a guide cylinder sleeved on one side of the lifting plate, a second limit plate fixed to the top surface of the lifting plate, a positioning plate fixed to the top surface of the guide cylinder, a guide rod connected to the side wall of the positioning plate, a spring sleeved on the outer wall of the guide rod, one end of the guide rod passes through and is connected to the inside of the second limit plate, and one side of the guide cylinder is fixedly connected to the side wall of the pressure locking plate.

9. The engine cylinder head air passage sealing test device according to claim 1, characterized in that: The pad support assembly includes a support box arranged between the first electric roller and the second electric roller, a plurality of connecting rods connected to both sides of the support box, the connecting rods are connected to the inner wall of the side support plate at one end away from the support box, a plurality of second through holes are opened on the top and bottom surfaces of the support box, and inclined guide plates are fixed on both end surfaces of the support box, and the support box is used to fit and support the bottom surface of the gasket.

10. The engine cylinder head air passage sealing test device according to claim 2, characterized in that: There is a stepped structure between the side wall of the cover and the air hole. One side of the inserting plate is plugged into the bottom surface of the stepped structure of the side wall of the cover. The top surface of the inserting plate away from the first push plate is a right-angle structure.

Images