Engine cylinder cover sealing performance detection equipment

Abstract

The utility model discloses an engine cylinder cover sealing detection device, and relates to the technical field of engine cylinder cover sealing detection. The sealing device comprises a rack with a workbench, a transverse moving mechanism, a side clamping sealing mechanism, a lifting mechanism, an upper sealing mechanism, a front sealing mechanism, a rear sealing mechanism, a plugging mechanism and a leakage detection mechanism. All the sealing mechanisms and the lifting mechanism are driven by the automatic telescopic structure, the automation degree is high, and manual operation is not needed; the efficient air tightness detection of the engine cylinder cover is realized; the whole process is completed automatically without manual operation; an airtight sealing ring is arranged between each sealing mechanism and the engine cylinder cover, so that the sealing effect can be well ensured; and a protective cover net is arranged outside the whole device, so that the safety is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of engine cylinder cover sealing detection, in particular to an engine cylinder cover sealing detection device. Background Art

[0002] The engine cylinder head is installed on the engine block, sealing the cylinder from the top of the cylinder block and forming the combustion chamber; the engine cylinder head has a complex structure and is generally made of cast iron or aluminum alloy, which can withstand high temperature and high pressure; Figure 8-9 As shown, the structure is generally provided with a hole chamber, and crankshaft mounting holes are provided on the left and right sides, and air inlet holes and air outlets are provided on the front and rear sides. After being installed as a whole with the cylinder body, the air tightness requirements are very high. Since the cylinder head structure is cast, it is necessary to carry out air tightness testing before leaving the factory.

[0003] Traditional engine cylinder head air tightness detection mostly adopts manual detection method, which has low detection efficiency and low standardization, resulting in poor reliability and high detection cost. Therefore, based on this, this technical solution is proposed, which has a high degree of automation and standardization and a fast detection speed. An engine cylinder head sealing detection equipment. Utility Model Content

[0004] The utility model provides an engine cylinder head sealing detection device, which carries the engine cylinder head to the detection station through a lateral moving mechanism, and the side clamping sealing mechanisms on the left and right sides perform air-sealing on the crankshaft mounting holes on the left and right sides, and the upper sealing mechanism, the front sealing mechanism and the rear sealing mechanism respectively perform air-tight sealing on the front and rear of the engine cylinder head, the blocking mechanism performs air-tight sealing on the valve guide hole, and the bottom sealing support plate performs air-tight sealing on the bottom, and each sealing mechanism and the lifting mechanism are driven by an automatic telescopic structure, with a high degree of automation and no need for manual operation; and by extending downward from the surface of the pressure plate into the engine cylinder head to install a pressurized gas nozzle connected to a helium storage, and cooperating with a gas leakage detector capable of helium detection installed on a carrier plate, efficient air-tight detection of the engine cylinder head is achieved; the whole process does not require manual operation and is completed automatically; and an air-tight sealing ring is arranged between each sealing mechanism and the engine cylinder head, which can well ensure the sealing effect; a protective cover net is arranged on the outside of the device as a whole, and the safety is good; in summary, the problems in the background technology are solved.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model discloses an engine cylinder head sealing detection device, comprising a frame with a workbench, a lateral moving mechanism mounted on the surface of the frame and carrying the engine cylinder head, a side clamping sealing mechanism arranged on both sides of a detection station in front of the lateral moving mechanism and used for air-sealing the crankshaft mounting holes on the left and right sides, a lifting mechanism arranged on the top of the detection station, an upper sealing mechanism installed on the lifting mechanism and used for sealing the top opening of the engine cylinder head and a front sealing mechanism for sealing the air inlet hole on the front side of the engine cylinder head, a rear sealing mechanism installed on the rear side of the detection station and used for sealing the air outlet hole on the rear side of the engine cylinder head and a sealing mechanism for sealing the valve guide hole, and a leakage detection mechanism installed on the lifting mechanism and used for detecting whether there is leakage;

[0007] The lateral movement mechanism comprises a lateral movement structure arranged on the workbench and a bearing platform matched with the lateral movement structure, and a sealing support plate for sealing the bottom of the engine cylinder head is arranged on the surface of the bearing platform;

[0008] The side clamping sealing mechanism includes two fixed seats arranged on both sides of the detection station, a first telescopic structure and a second telescopic structure respectively mounted on the fixed seats and arranged opposite to each other, a first pressurized sealing plate mounted on the top lifting head end of the first telescopic structure to seal the crankshaft mounting hole on one side of the engine cylinder head, and a second pressurized sealing plate mounted on the top lifting head end of the second telescopic structure to seal the crankshaft mounting hole on the other side of the engine cylinder head;

[0009] The lifting mechanism includes a guide column vertically arranged on the detection station, a carrier plate installed on the guide column through a guide sleeve, a top plate installed on the top of the guide column, and a second telescopic structure installed on the upper surface of the top plate and having a top lifting head fixedly connected to the upper portion of the carrier plate;

[0010] The upper sealing mechanism comprises a connecting plate located at the bottom of the carrier plate, a supporting rod connected to the bottom of the connecting plate, and a pressing plate installed at the bottom of the supporting rod and corresponding to the top of the engine cylinder head;

[0011] The front sealing mechanism includes a support frame arranged at the bottom of the front side of the carrier plate, a fourth telescopic structure mounted on the support frame and facing each air inlet hole, and a third pressurized sealing plate mounted on the top lifting end of the fourth telescopic structure and air-sealing the air inlet hole;

[0012] The rear sealing mechanism comprises a fifth telescopic structure mounted through a bracket and facing the rear air outlet, and a fourth pressurized sealing plate mounted on the top lifting end of the fifth telescopic structure;

[0013] The blocking mechanism includes a sixth telescopic structure mounted through a bracket and facing the rear valve guide hole, and an airtight plugging column mounted on the top lifting end of the sixth telescopic structure and airtightly sealing the valve guide hole;

[0014] The leakage detection mechanism comprises a pressurized gas nozzle extending downward from the surface of the pressure plate into the engine cylinder head, and a gas leakage detector installed on the surface of the carrier plate for gas leakage detection.

[0015] Furthermore, the transverse movement structure includes two guide rails arranged on the surface of the workbench and a transverse movement component arranged between the two guide rails; the transverse movement component adopts a telescopic rod fixedly connected to the top lifting head and the bottom of the support platform, or a screw driven by an end motor that cooperates with the ball screw at the bottom of the support platform.

[0016] Furthermore, guide rods are provided between the first pressurizing sealing plate, the second pressurizing sealing plate and the fixing seat.

[0017] Furthermore, airtight sealing rings are provided between the first pressurized sealing plate, the second pressurized sealing plate, the sealing support plate, the pressure plate, the third pressurized sealing plate, the fourth pressurized sealing plate and the engine cylinder head.

[0018] Furthermore, the airtight plugging column is a rubber column for airtight plugging that is interference-fitted with the valve guide hole.

[0019] Furthermore, the gas leakage detector is installed at the top lifting head end of the seventh telescopic structure.

[0020] Furthermore, a channel hole for gas circulation corresponding to the gas leakage detector is provided on the carrier plate.

[0021] Furthermore, a protective cover net is provided on the outer peripheral side of the frame.

[0022] Furthermore, a shock-absorbing foot pad is provided at the bottom of the frame.

[0023] Furthermore, the pressurized gas nozzle is connected to a high-pressure helium storage tank through an air pipe, and the gas leakage detector is a helium leakage detector.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] (1) The engine cylinder head is carried to the inspection station by a lateral moving mechanism, and the left and right side clamping sealing mechanisms are used to air-seal the crankshaft mounting holes on the left and right sides. The upper sealing mechanism, the front sealing mechanism and the rear sealing mechanism respectively air-seal the front and rear of the engine cylinder head. The plugging mechanism air-seals the valve guide hole, and the bottom sealing support plate air-seals the bottom. Each sealing mechanism and lifting mechanism are driven by an automatic telescopic structure. The entire process does not require manual operation and is completed automatically, with a high degree of automation.

[0026] (2) A pressurized gas nozzle connected to a helium storage is installed in the engine cylinder head by extending downward from the pressure plate surface, and a gas leak detector capable of detecting helium installed on the carrier plate is used to achieve efficient air tightness detection of the engine cylinder head with high detection sensitivity;

[0027] (3) An airtight sealing ring is provided between each sealing mechanism and the engine cylinder head, which can well ensure the sealing effect;

[0028] (4) The entire device is equipped with a protective cover net on the outside, which provides good protection.

[0029] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 This is a structural schematic diagram of an engine cylinder head sealing detection device of the utility model;

[0032] Figure 2 for Figure 1 The schematic diagram of the structure after removing the frame and protective cover net;

[0033] Figure 3 for Figure 2 Structural diagram from perspective A;

[0034] Figure 4 for Figure 2 The structural diagram after removing the lifting mechanism;

[0035] Figure 5 for Figure 4 Schematic diagram of the structure from the perspective of middle B;

[0036] Figure 6 for Figure 4 The schematic diagram of the structure after removing the connecting plate and the pressing plate;

[0037] Figure 7 for Figure 6 Structural diagram from the middle C perspective;

[0038] Figure 8 It is a structural schematic diagram of the engine cylinder head structure of this specific embodiment;

[0039] Fig. 9 for Figure 8Schematic diagram of the structure from a medium 3D perspective;

[0040] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0041] 1-frame, 101-protective cover net, 102-shock-absorbing foot pad, 103-workbench, 104-guide rail, 105-transverse movement component, 106-carrying platform, 1061-sealing support plate, 2-guide column, 201-top plate, 202-third telescopic structure, 203-carrying plate, 2031-connecting plate, 2032-pressing plate, 2033-pressurized gas nozzle, 2034-support rod, 204-guide sleeve, 205-support frame, 2051-fourth telescopic structure, 206-channel hole, 207-gas leakage detector, 2071-seventh telescopic structure, 3-first telescopic structure, 4-second telescopic structure, 401-second pressurized sealing plate, 5-fifth telescopic structure, 501-fourth pressurized sealing plate, 6-sixth telescopic structure, 601-airtight plugging column, 7-engine cylinder head. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] In the description of the present invention, it should be understood that terms such as "surface", "lateral", "left and right sides", "top", "front side", "rear side" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limitations on the present invention.

[0044] like Figure 8-9 As shown, it is an engine cylinder head in this specific embodiment, whose surface, bottom surface, air outlet, air inlet, and crankshaft mounting hole are all smooth planes, and can achieve pressurized sealing through the cooperation of the airtight sealing ring and the pressure plate;

[0045] See also Figure 1-7As shown, an engine cylinder head sealing detection device of the utility model comprises a frame 1 with a workbench 103, a lateral moving mechanism mounted on the surface of the frame 1 for carrying the engine cylinder head 7, a side clamping sealing mechanism arranged on both sides of the detection station in front of the lateral moving mechanism for air-sealing the crankshaft mounting holes on the left and right sides, a lifting mechanism arranged on the top of the detection station, an upper sealing mechanism installed on the lifting mechanism for sealing the top opening of the engine cylinder head 7 and a front sealing mechanism for sealing the front air inlet of the engine cylinder head 7, a rear sealing mechanism installed on the rear side of the detection station for sealing the rear air outlet of the engine cylinder head 7 and a sealing mechanism for sealing the valve guide hole, and a leakage detection mechanism installed on the lifting mechanism for detecting whether there is leakage;

[0046] The lateral movement mechanism includes a lateral movement structure arranged on the workbench 103 and a bearing platform 106 matched with the lateral movement structure. The surface of the bearing platform 106 is provided with a sealing support plate 1061 for sealing the bottom of the engine cylinder head 7;

[0047] The side clamping sealing mechanism includes two fixed seats arranged on both sides of the detection station, a first telescopic structure 3 and a second telescopic structure 4 respectively mounted on the fixed seats and arranged opposite to each other, a first pressurized sealing plate 301 mounted on the top lifting head end of the first telescopic structure 3 to seal the crankshaft mounting hole on one side of the engine cylinder head 7, and a second pressurized sealing plate 401 mounted on the top lifting head end of the second telescopic structure 4 to seal the crankshaft mounting hole on the other side of the engine cylinder head 7; guide rods are arranged between the first pressurized sealing plate 301, the second pressurized sealing plate 401 and the fixed seats;

[0048] The lifting mechanism includes a guide column 2 vertically arranged on the detection station, a carrier plate 203 installed on the guide column 2 through a guide sleeve 204, a top plate 201 installed on the top of the guide column 2, and a third telescopic structure 202 installed on the upper surface of the top plate 201 and having a top lifting head fixedly connected to the upper part of the carrier plate 203;

[0049] The upper sealing mechanism includes a connecting plate 2031 located at the bottom of the carrier plate 203, a supporting rod 2034 connected to the bottom of the connecting plate 2031, and a pressing plate 2032 installed at the bottom of the supporting rod 2034 and corresponding to the top of the engine cylinder head 7; a channel hole 206 for gas circulation corresponding to the gas leakage detector 207 is opened on the carrier plate 203;

[0050] The front sealing mechanism includes a support frame 205 disposed at the bottom of the front side of the carrier plate 203, a fourth telescopic structure 2051 mounted on the support frame 205 and facing each air inlet hole, and a third pressurized sealing plate mounted on the top end of the fourth telescopic structure 2051 and air-sealing the air inlet hole;

[0051] The rear sealing mechanism includes a fifth telescopic structure 5 mounted through a bracket facing the rear air outlet, and a fourth pressurizing sealing plate 501 mounted on the top lifting end of the fifth telescopic structure 5;

[0052] The blocking mechanism includes a sixth telescopic structure 6 mounted through a bracket facing the rear valve guide hole, and an airtight plugging column 601 mounted on the top end of the sixth telescopic structure 6 for air-sealing the valve guide hole; the airtight plugging column 601 is a rubber column that is airtightly plugged and has an interference fit with the valve guide hole;

[0053] The leakage detection mechanism includes a pressurized gas nozzle 2033 extending downward from the surface of the pressure plate 2032 into the engine cylinder head 7, and a gas leakage detector 207 for leakage detection installed on the surface of the carrier plate 203; the gas leakage detector 207 is installed at the top lifting head end of the seventh telescopic structure 2071; the pressurized gas nozzle 2033 is connected to the high-pressure helium storage tank through an air pipe, and the gas leakage detector 207 adopts a helium leakage detector; the corresponding helium leakage detection is an existing technology and belongs to a mature technical solution, and the specific principle is not repeated in this technical solution;

[0054] A protective cover net 101 is arranged on the outer peripheral side of the frame 1, and the lateral moving mechanism is located in an open structure, which is exposed and can allow new engine cylinder heads to be transported in and out; a shock-absorbing foot pad 102 is arranged at the bottom of the frame 1 to alleviate vibration during the automated detection process.

[0055] Among them, the transverse movement structure includes two guide rails 104 arranged on the surface of the workbench 103 and a transverse movement component 105 arranged between the two guide rails 104; the transverse movement component 105 adopts a telescopic rod fixedly connected to the bottom of the support platform 106 by a top lifting head, or a screw driven by an end motor that cooperates with the ball screw at the bottom of the support platform 106.

[0056] Among them, airtight sealing rings are arranged between the first pressurized sealing plate 301, the second pressurized sealing plate 401, the sealing support plate 1061, the pressure plate 2032, the third pressurized sealing plate, the fourth pressurized sealing plate 501 and the engine cylinder head 7; the airtight sealing rings can ensure the sealing effect.

[0057] The corresponding first to seventh telescopic structures adopt air cylinders or oil cylinders;

[0058] The utility model carries the engine cylinder head to the inspection station through a lateral moving mechanism, and the side clamping sealing mechanisms on the left and right sides perform air-tight sealing on the crankshaft mounting holes on the left and right sides, the upper sealing mechanism, the front sealing mechanism and the rear sealing mechanism respectively perform air-tight sealing on the front and rear of the engine cylinder head, the blocking mechanism performs air-tight sealing on the valve guide hole, and the bottom sealing support plate performs air-tight sealing on the bottom, and each sealing mechanism and the lifting mechanism are driven by an automatic telescopic structure, with a high degree of automation and no need for manual operation; and a pressurized gas nozzle connected to a helium storage is installed in the engine cylinder head by extending downward from the surface of the pressure plate, and a gas leakage detector capable of helium detection is installed on the carrier plate, so that efficient air-tightness detection of the engine cylinder head is realized; the whole process does not require manual operation and is completed automatically; and an air-tight sealing ring is arranged between each sealing mechanism and the engine cylinder head, which can well ensure the sealing effect; a protective cover net is arranged on the outside of the device as a whole, and the safety is good

[0059] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An engine cylinder head sealing detection device, characterized in that: The invention comprises a frame (1) with a workbench (103), a lateral movement mechanism mounted on the surface of the frame (1) and carrying an engine cylinder head (7), a side clamping sealing mechanism arranged on both sides of a detection station in front of the lateral movement mechanism and used for air-sealing crankshaft mounting holes on the left and right sides, a lifting mechanism arranged on the top of the detection station, an upper sealing mechanism mounted on the lifting mechanism and used for sealing the top opening of the engine cylinder head (7) and a front sealing mechanism for sealing the front air inlet of the engine cylinder head (7), a rear sealing mechanism mounted on the rear side of the detection station and used for sealing the rear air outlet of the engine cylinder head (7) and a sealing mechanism for sealing the valve guide hole, and a leakage detection mechanism mounted on the lifting mechanism and used for detecting whether there is leakage; The transverse movement mechanism comprises a transverse movement structure arranged on a workbench (103) and a bearing platform (106) matched with the transverse movement structure, and a sealing support plate (1061) for sealing the bottom of the engine cylinder head (7) is arranged on the surface of the bearing platform (106); The side clamping sealing mechanism comprises two fixed seats arranged on both sides of the detection station, a first telescopic structure (3) and a second telescopic structure (4) respectively mounted on the fixed seats and arranged opposite to each other, a first pressurized sealing plate (301) mounted on the top lifting head end of the first telescopic structure (3) to seal the crankshaft mounting hole on one side of the engine cylinder head (7), and a second pressurized sealing plate (401) mounted on the top lifting head end of the second telescopic structure (4) to seal the crankshaft mounting hole on the other side of the engine cylinder head (7); The lifting mechanism comprises a guide column (2) vertically arranged on the detection station, a carrier plate (203) installed on the guide column (2) through a guide sleeve (204), a top plate (201) installed on the top of the guide column (2), and a third telescopic structure (202) installed on the upper surface of the top plate (201) and having a top lifting head fixedly connected to the upper part of the carrier plate (203); The upper sealing mechanism comprises a connecting plate (2031) located at the bottom of the carrier plate (203), a support rod (2034) connected to the bottom of the connecting plate (2031), and a pressure plate (2032) mounted at the bottom of the support rod (2034) and corresponding to the top of the engine cylinder head (7); The front sealing mechanism comprises a support frame (205) arranged at the front bottom of the carrier plate (203), a fourth telescopic structure (2051) mounted on the support frame (205) and facing each air inlet hole, and a third pressurizing sealing plate mounted on the top lifting end of the fourth telescopic structure (2051) and air-sealing the air inlet hole; The rear sealing mechanism comprises a fifth telescopic structure (5) mounted via a bracket and facing the rear air outlet, and a fourth pressurizing sealing plate (501) mounted on the top lifting end of the fifth telescopic structure (5); The blocking mechanism comprises a sixth telescopic structure (6) mounted via a bracket and facing the rear valve guide hole, and an airtight plugging rod (601) mounted on the top lifting end of the sixth telescopic structure (6) and airtightly sealing the valve guide hole; The leakage detection mechanism comprises a pressurized gas nozzle (2033) extending downward from the surface of the pressure plate (2032) into the engine cylinder head (7), and a gas leakage detector (207) mounted on the surface of the carrier plate (203) for detecting gas leakage.

2. The engine cylinder head sealing detection device according to claim 1, characterized in that: The transverse movement structure comprises two guide rails (104) arranged on the surface of the workbench (103) and a transverse movement component (105) arranged between the two guide rails (104); the transverse movement component (105) adopts a telescopic rod fixedly connected to the bottom of the support platform (106) by a top lifting head, or a screw driven by an end motor that cooperates with the ball screw at the bottom of the support platform (106).

3. The engine cylinder head sealing detection device according to claim 1, characterized in that: Guide rods are provided between the first pressurizing sealing plate (301), the second pressurizing sealing plate (401) and the fixing seat.

4. The engine cylinder head sealing detection device according to claim 1, characterized in that: Airtight sealing rings are provided between the first pressurized sealing plate (301), the second pressurized sealing plate (401), the sealing support plate (1061), the pressure plate (2032), the third pressurized sealing plate, the fourth pressurized sealing plate (501) and the engine cylinder head (7).

5. The engine cylinder head sealing detection device according to claim 1, characterized in that: The airtight plugging column (601) is a rubber column that is airtightly plugged and has an interference fit with the valve guide hole.

6. The engine cylinder head sealing detection device according to claim 1, characterized in that: The gas leakage detector (207) is installed at the top lifting head end of the seventh telescopic structure (2071).

7. The engine cylinder head sealing detection device according to claim 1, characterized in that: A channel hole (206) for gas circulation corresponding to the gas leakage detector (207) is provided on the carrier plate (203).

8. The engine cylinder head sealing detection device according to claim 1, characterized in that: A protective cover net (101) is provided on the outer peripheral side of the frame (1).

9. The engine cylinder head sealing detection device according to claim 1, characterized in that: A shock-absorbing foot pad (102) is provided at the bottom of the frame (1).

10. The engine cylinder head sealing detection device according to claim 1, characterized in that: The pressurized gas nozzle (2033) is connected to the high-pressure helium storage tank via a gas pipe, and the gas leakage detector (207) is a helium leakage detector.

Images