An oil pan air tightness detection device

Abstract

The utility model discloses a kind of machine oil pan air tightness detection devices, belong to machine oil pan production technical field.A kind of machine oil pan air tightness detection device, including machine table, further include: dismounting and setting up clamp plate on workbench, sealing ring is fixedly arranged on clamp plate, and it is matched with the mouth part end surface of machine oil pan;Top plate is installed in the bottom of lifting plate, and there is mounting seat elastically lifting on top plate, sealing pad for sealing oil drain bolt hole is arranged in mounting seat, and support seat is arranged on clamp plate, top rod is fixedly arranged in the bottom of mounting seat, and the end of top rod away from mounting seat is in abutment with support seat;The utility model is provided with support seat on clamp plate, when mounting seat is sealed to oil drain bolt hole with sealing pad sliding down, after sealing pad contracts certain distance, top rod bottom and support seat top abut, realize supporting, limiting to mounting seat, avoid mounting seat to press the deformation of machine oil pan or pressure deficiency appears air leakage, improve use effect.

Description

Technical Field

[0001] This utility model relates to the field of oil pan manufacturing technology, and in particular to an oil pan airtightness testing device. Background Technology

[0002] The oil pan (also known as the oil sump) is a component at the bottom of the engine used to store engine oil. It is typically made of metal or composite materials and is sealed and fixed to the lower part of the engine block, serving as an important part of the lubrication system. Oil pans are usually die-cast from aluminum alloy. During the die-casting process, pores or cracks can easily appear inside the housing. These pores are exposed during subsequent machining by cutting away parts of the housing material. Therefore, the airtightness of the oil pan needs to be tested after machining.

[0003] Existing oil pan air tightness testing devices generally include: a machine base: used to install and support testing components, such as a workbench and water tank; a workbench: fixed on the machine base for installing testing fixtures; testing fixtures: divided into a clamping plate and a holding plate. The clamping plate is fixed on the workbench and has a sealing element installed on it. The oil pan opening faces downwards and covers the sealing element. The holding plate has a holding rod installed on it, which is raised and lowered on the machine base by a cylinder or hydraulic cylinder to hold the oil pan on the clamping plate; a water tank: raised and lowered on the machine base, the water inside can immerse the workbench for water testing of the workpiece; and a testing unit: equipped with a stable air source, pressure gauge, air pressure regulating valve, and air tightness monitoring instrument. The pressure entering the oil pan is regulated by the regulating valve. After maintaining the pressure for a certain period of time, the pressure inside the oil pan is judged by the pressure gauge and the air tightness monitoring instrument to achieve air tightness testing.

[0004] Currently, there is a drain bolt hole at the bottom of the oil pan housing. When the drain bolt hole is sealed with a clamping rod, the pressure is often too high and deforms the oil pan, or the pressure is too low and cannot be reliably sealed. Therefore, it is difficult to meet production requirements. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art that when sealing the drain bolt hole, excessive pressure can easily deform the oil pan or insufficient pressure can prevent sealing. Therefore, an oil pan airtightness detection device is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An oil pan airtightness testing device includes a machine base, a workbench fixedly mounted on the machine base, and a lifting plate that is raised and lowered on the machine base. The device further includes: a clamping plate detachably mounted on the workbench, a sealing ring fixedly mounted on the clamping plate to match the end face of the oil pan opening, an air inlet pipe and an exhaust pipe mounted on the clamping plate; and a top plate mounted on the bottom of the lifting plate, wherein the top plate has a clamping component, a mounting seat that is elastically raised and lowered on the top plate, a sealing gasket for sealing the drain bolt hole is provided inside the mounting seat, and a support seat is provided on the clamping plate. A push rod is fixedly mounted at the bottom of the mounting seat, and the end of the push rod away from the mounting seat abuts against the support seat.

[0008] In order to adjust the compression of the sealing gasket, preferably, the top of the support base is threadedly connected to an adjusting rod, and a limiting seat is fixedly provided on the top of the adjusting rod, with the end of the top rod away from the mounting base abutting against the top of the limiting seat.

[0009] To facilitate the elastic lifting and lowering of the mounting base, preferably, a base is detachably provided on the top plate, a guide groove is provided in the base, a guide plate is lifted and lowered in the guide groove, a connecting rod is fixedly provided at the bottom of the guide plate, the top of the mounting base is threadedly connected to one end of the connecting rod extending out of the guide groove, and a spring is sleeved on the connecting rod, with the two ends of the spring abutting against the base and the mounting base respectively.

[0010] To facilitate the installation of the base, a fixing plate is further fixedly installed on both sides of the base, and the fixing plate is threadedly connected to the top plate by bolts.

[0011] Preferably, the mounting base has a mounting groove at its bottom, the top rod is coaxially fixed in the mounting groove, and the sealing gasket is installed in the mounting groove.

[0012] Preferably, the fixture plate is detachably provided with at least two locating pins for positioning the oil pan.

[0013] Compared with the prior art, the present invention provides a device for detecting the airtightness of an oil pan, which has the following advantages:

[0014] 1. The oil pan air tightness testing device has a support seat on the fixture plate. When the mounting seat slides down with the sealing gasket to seal the oil drain bolt hole, after the sealing gasket retracts a certain distance, the bottom of the push rod abuts against the top of the support seat, thereby supporting and limiting the mounting seat, preventing the mounting seat from deforming the oil pan or causing air leakage due to insufficient pressure, thus improving the performance.

[0015] 2. The oil pan air tightness testing device has an adjusting rod threadedly connected to the top of the support base, and a limiting seat is fixedly installed on the top of the adjusting rod so that the bottom of the top rod abuts against the top of the limiting seat, thereby adjusting the compression of the sealing gasket and improving the performance.

[0016] All parts not mentioned in this device are the same as or can be implemented using existing technology. This utility model provides a support seat on the clamp plate. When the mounting seat slides down with the sealing gasket to seal the drain bolt hole, after the sealing gasket contracts a certain distance, the bottom of the push rod abuts against the top of the support seat, thereby supporting and limiting the mounting seat, preventing the mounting seat from deforming the oil pan or causing air leakage due to insufficient pressure, and improving the performance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an oil pan airtightness testing device proposed in this utility model;

[0018] Figure 2 This utility model proposes an oil pan airtightness testing device. Figure 1 Enlarged view of section A;

[0019] Figure 3 This is a schematic diagram of the structure of the base of the oil pan airtightness testing device proposed in this utility model;

[0020] Figure 4 This is a schematic diagram of the adjusting rod of the oil pan airtightness testing device proposed in this utility model.

[0021] In the diagram: 1. Machine base; 101. Workbench; 102. Lifting plate; 2. Base; 201. Fixing plate; 202. Guide groove; 3. Connecting rod; 301. Guide plate; 4. Mounting seat; 401. Mounting groove; 402. Top rod; 5. Support seat; 501. Limiting seat; 6. Sealing gasket; 7. Spring; 8. Pressure rod; 9. Clamping plate; 901. Top plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Example:

[0025] Reference Figures 1-4An oil pan airtightness testing device includes a machine base 1, a worktable 101 fixedly mounted on the machine base 1, and a lifting plate 102 vertically mounted on the machine base 1. A cylinder for driving the lifting plate 102 to rise and fall is fixedly mounted on the top of the machine base 1. The device also includes a clamping plate 9 detachably mounted on the worktable 101. Preferably, the clamping plate 9 is bolted to the worktable 101. At least two positioning holes are provided on each clamping plate 9 on the worktable 101. During installation, positioning pins are sequentially inserted into the positioning holes on the worktable 101 to position the clamping plate 9, ensuring accurate and reliable positioning of the clamping plate 9 on the worktable 101. A sealing ring that matches the end face of the oil pan opening is fixedly installed on the upper part, and at least two positioning pins for positioning the oil pan are detachably installed on the clamp plate 9. Here, we prefer two positioning pins on the clamp plate 9 for positioning the oil pan. In use, the oil pan is placed on the clamp plate 9 with the opening facing down, so that the positioning pins are inserted into the through hole of the oil pan. At this time, the end face of the oil pan opening abuts against the sealing ring. An air inlet pipe and an air outlet pipe are provided on the clamp plate 9. Solenoid valves are installed on both the air inlet pipe and the air outlet pipe. The air inlet pipe is connected to the air source output end through the regulating valve. The clamp plate 9 is connected to an air tightness monitor and a pressure gauge respectively through a detection pipe to monitor the air pressure in the oil pan.A top plate 901 is installed at the bottom of the lifting plate 102. Here, L-shaped support plates are fixedly installed at the bottom of both ends of the lifting plate 102. Both ends of the top plate 901 extend into the support plates, and fastening screws are threaded onto the support plates. The end of the fastening screw extending into the support plate abuts against the top plate 901, thus fixing the top plate 901 to the lifting plate 102. A mounting base 4 is elastically raised and lowered on the top plate 901. A sealing gasket 6 for sealing the drain bolt hole is installed inside the mounting base 4. The sealing gasket 6 is made of rubber or polyurethane. The material is preferably polyurethane. This means that when the mounting base 4 slides downwards with the sealing gasket 6, the sealing gasket 6 abuts against the outer end face of the drain bolt hole, sealing the drain bolt hole. A support base 5 is provided on the clamping plate 9, preferably fixed to the clamping plate 9 with bolts. A push rod 402 is fixedly provided at the bottom of the mounting base 4, with the end of the push rod 402 away from the mounting base 4 abutting against the support base 5. In use, when the mounting base 4 slides downwards with the sealing gasket 6, the sealing gasket 6 abuts against the outer end face of the drain bolt hole and contracts by 2-5mm, preferably 3mm. The bottom of the push rod 402 abuts against the top of the support base 5, thus supporting the mounting base 4 and preventing the mounting base 4 from deforming or leaking the oil pan, improving the performance. A clamping component is provided on the top plate 901 to hold the oil pan on the clamping plate 9. The clamping component moves in the same way as the mounting base 4, except that the push rod 402 at the bottom of the mounting base 4 is replaced by a pressure rod 8. The pressure rod 8 abuts against the back of the oil pan opening, thus clamping the oil pan on the clamping plate 9. There are two to twenty sets of clamping components; here, we prefer fourteen sets, with five sets distributed on each side of the oil pan. Two sets of clamping devices are distributed at each end of the oil pan to improve its clamping effect. That is, after the oil pan is placed on the clamping plate 9, the actuating cylinder slides the lifting plate 102 downwards, causing the pressure rod 8 to press against the back of the oil pan opening, thus sealing the oil pan opening with the clamping plate 9 via a sealing ring. At this time, the mounting base 4, with its sealing gasket 6, seals the drain bolt hole. After the sealing gasket 6 retracts a certain distance, the bottom of the push rod 402 abuts against the top of the support base 5, supporting the mounting base 4 and preventing it from deforming the oil pan or causing air leakage.

[0026] During use, a support seat 5 is provided on the clamp plate 9. When the mounting seat 4 slides down with the sealing gasket 6 to seal the drain bolt hole, after the sealing gasket 6 retracts a certain distance, the bottom of the push rod 402 abuts against the top of the support seat 5, thereby supporting and limiting the mounting seat 4, preventing the mounting seat 4 from deforming the oil pan or causing air leakage due to insufficient pressure, thus improving the performance.

[0027] Reference Figures 2-4An adjusting rod is threaded to the top of the support base 5, and a limiting seat 501 is fixedly installed on the top of the adjusting rod. The limiting seat 501 is hexagonal prism-shaped to facilitate the rotation of the adjusting rod. The end of the top rod 402 away from the mounting base 4 abuts against the top of the limiting seat 501. A nut is threaded to the adjusting rod, and the bottom of the nut abuts against the top of the support base 5. In use, by threading the adjusting rod to the top of the support base 5 and fixing the limiting seat 501 on the top of the adjusting rod, the bottom of the top rod 402 abuts against the top of the limiting seat 501, thereby adjusting the compression of the sealing gasket 6 and improving the performance.

[0028] Reference Figure 3 and Figure 4 A base 2 is detachably installed on the top plate 901. A guide groove 202 is provided in the base 2. A guide plate 301 is raised and lowered in the guide groove 202. A connecting rod 3 is fixedly installed at the bottom of the guide plate 301. The top of the mounting base 4 is threadedly connected to one end of the connecting rod 3 that extends out of the guide groove 202. A spring 7 is sleeved on the connecting rod 3. The two ends of the spring 7 abut against the base 2 and the mounting base 4, respectively. In use, by setting the base 2 on the top plate 901, raising and lowering the connecting rod 3 on the base 2, and sleeved the spring 7 on the connecting rod 3, with the two ends of the spring 7 abutting against the base 2 and the mounting base 4, the mounting base 4 achieves an elastic raising and lowering effect.

[0029] Reference Figure 3 and Figure 4 Fixing plates 201 are fixedly installed on both sides of the base 2. The fixing plates 201 are threadedly connected to the top plate 901 by bolts. In use, the base 2 is fixed on the top plate 901 by fixing the fixing plates 201 on the base 2 and threading the fixing plates 201 to the top plate 901 by bolts. The installation and removal are convenient and the fixing is reliable.

[0030] Reference Figures 2-4 An installation groove 401 is provided at the bottom of the mounting base 4. The top rod 402 is coaxially fixed in the installation groove 401, and the sealing gasket 6 is installed in the installation groove 401. In use, the installation groove 401 at the bottom of the mounting base 4 facilitates the installation of the sealing gasket 6. Moreover, it is preferable that the thickness of the sealing gasket 6 is greater than the depth of the installation groove 401 to improve the performance.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An oil pan airtightness testing device, comprising a machine base (1), a worktable (101) fixedly mounted on the machine base (1), and a lifting plate (102) vertically mounted on the machine base (1), characterized in that, Also includes: Disassemble the fixture plate (9) set on the workbench (101). The fixture plate (9) is fixedly provided with a sealing ring that matches the end face of the oil pan opening. The fixture plate (9) is provided with an air inlet pipe and an exhaust pipe. The top plate (901) is installed at the bottom of the lifting plate (102). The top plate (901) is provided with a clamping member, and the top plate (901) is provided with a mounting seat (4) that can be lifted and lowered elastically. The mounting seat (4) is provided with a sealing gasket (6) for sealing the oil drain bolt hole. The clamping plate (9) is provided with a support seat (5). The bottom of the mounting seat (4) is fixedly provided with a top rod (402). The end of the top rod (402) away from the mounting seat (4) abuts against the support seat (5).

2. The oil pan airtightness testing device according to claim 1, characterized in that, The support base (5) is threadedly connected to an adjusting rod, and a limiting seat (501) is fixedly installed on the top of the adjusting rod. The end of the top rod (402) away from the mounting base (4) abuts against the top of the limiting seat (501).

3. The oil pan airtightness testing device according to claim 1, characterized in that, A base (2) is detachably installed on the top plate (901). A guide groove (202) is provided in the base (2). A guide plate (301) is raised and lowered in the guide groove (202). A connecting rod (3) is fixedly installed at the bottom of the guide plate (301). The top of the mounting base (4) is threadedly connected to one end of the connecting rod (3) extending out of the guide groove (202). A spring (7) is sleeved on the connecting rod (3). The two ends of the spring (7) abut against the base (2) and the mounting base (4) respectively.

4. The oil pan airtightness testing device according to claim 3, characterized in that, The base (2) is fixedly provided with fixing plates (201) on both sides, and the fixing plates (201) are threadedly connected to the top plate (901) by bolts.

5. The oil pan airtightness testing device according to claim 1, characterized in that, The mounting base (4) has a mounting groove (401) at the bottom, the top rod (402) is coaxially fixed in the mounting groove (401), and the sealing gasket (6) is installed in the mounting groove (401).

6. The oil pan airtightness testing device according to claim 1, characterized in that, At least two positioning pins for positioning the oil pan are detachably installed on the clamp plate (9).

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