Cylinder hole plugging device for leakage test of engine cylinder body

Abstract

The utility model discloses a cylinder hole plugging device for engine cylinder block leakage testing, and relates to the technical field of cylinder block assembly leakage testing machines. Comprising a bearing structure and a plugging structure which are connected with each other, an oil cylinder is connected to the center of an oil cylinder mounting plate, four corners of the oil cylinder mounting plate are connected with pressing sleeves below through pull rods, stop bolts are located on two sides of the oil cylinder and connected to diagonal lines of the oil cylinder mounting plate, iron blocking rods are located below the stop bolts and connected to a plugging device fixing plate, and a pressing plate is fixed to the lower end of the oil cylinder. The rotating shaft is in contact with the mandrel for preventing rotation; in the plugging structure, a joint is fixed on an oil cylinder, a mandrel is fixedly connected with a gland at the lower end, a fixed shaft sleeve is fixed on a plugging device fixing plate, the outer side of the fixed shaft sleeve is connected with a pressing sleeve, a plug and a limiting sleeve, and the bottom end is connected with the gland. The device is reasonable in structure and simple to operate. The problem of low working efficiency of previous plugging operation is greatly solved, and the device is good in sealing performance, high in working efficiency and capable of meeting the full-automatic function of most production lines.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinder assembly leak testing machines, in particular to a cylinder hole plugging device used for engine cylinder leak testing. Background Art

[0002] In the automobile engine production line, in order to solve the problem of "three leaks in the engine" of water leakage, oil leakage and air leakage, one or two leak testing processes are usually added in the process of the engine production line to find out whether the engine has the problem of "three leaks" and ensure the quality of the engine. The leak tester is an important auxiliary equipment for solving the "three leaks in the engine" on the engine production line. There are many kinds of sealing devices for leak testers. Most of the structures have high costs and require a long time to seal. When sealing multiple holes in the cylinder bore of the cylinder block, the work efficiency is low and the sealing operation cannot be performed quickly. Therefore, there are limitations, which is not conducive to the operation of the overall assembly leak tester. Utility Model Content

[0003] The purpose of the utility model is to solve the problems existing in the above-mentioned prior art and to provide a cylinder hole plugging device for engine cylinder leak testing. This structure greatly solves the problem of low working efficiency of previous plugging operations. This device has good sealing performance, high working efficiency, and can meet the full automation function of most production lines.

[0004] The technical solution adopted by the utility model to achieve the above-mentioned purpose is: a cylinder hole plugging device for engine cylinder body leak testing, characterized in that: it includes a bearing structure and a plugging structure connected to each other, the bearing structure includes an oil cylinder, an oil cylinder mounting plate, a stop bolt, an iron stopper, a pull rod, and a pressure plate, the center of the oil cylinder mounting plate is connected to the oil cylinder, the four corners of the oil cylinder mounting plate are connected to the pressing sleeve below through a pull rod, the stop bolt is located on both sides of the oil cylinder and connected to the diagonal of the oil cylinder mounting plate, the iron stopper is located below the stop bolt and connected to the fixing plate of the plugging device, the iron stopper cooperates with the stop bolt to adjust the stroke of the oil cylinder retraction, and then adjusts the expansion amount of the plugging, and the pressure plate is fixed to the lower end of the oil cylinder to contact with the core shaft to prevent rotation;

[0005] The sealing structure includes a sealing device fixing plate, a joint, a core shaft, and a fixed sleeve. The sealing device fixing plate is provided with a hole for the pull rod to pass through. The joint is fixed on the oil cylinder. The core shaft is fixedly connected to the pressure cover at the lower end and always keeps in contact with the joint. The fixed sleeve is fixed on the sealing device fixing plate. The outer side of the fixed sleeve is connected to the pressure sleeve, the sealing and the limit sleeve in sequence from top to bottom, and the bottom end is connected to the pressure cover.

[0006] A quenching pad is sleeved on the core shaft, and the quenching pad is in contact with an adjusting bolt connected to the pressure cover.

[0007] The plugging is divided into two parts, which are separated by a limiting sleeve in the middle to achieve double-layer expansion sealing.

[0008] The utility model is improved by studying the existing structural shortcomings, has a reasonable structure and is easy to operate, which greatly solves the problem of low efficiency of previous plugging operations. The device has good sealing performance, high working efficiency, and can meet the full automation function of most production lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the utility model;

[0010] Figure 2 for Figure 1 Axial cross-sectional view of

[0011] Figure 3 for Figure 1 Axis side Figure 1 ;

[0012] Figure 4 for Figure 1 Axis side Figure 2 ;

[0013] In the figure: 1. Cylinder; 2. Cylinder mounting plate; 3. Stop bolt; 4. Iron stopper; 5. Pull rod; 6. Pressure plate; 7. Sealing device fixing plate; 8. Joint; 9. Mandrel; 10. Fixed sleeve; 11. Pressing sleeve; 12. Sealing; 13. Limiting sleeve; 14. Quenching pad; 15. Pressure cover; 16. Adjusting bolt. DETAILED DESCRIPTION Example 1

[0014] like Figure 1-Figure 4 The cylinder hole plugging device for engine cylinder block leak testing shown in the figure comprises a bearing structure and a plugging structure connected to each other, the bearing structure comprises an oil cylinder 1, an oil cylinder mounting plate 2, a stop bolt 3, a stopper iron rod 4, a pull rod 5, and a pressure plate 6, the center of the oil cylinder mounting plate 2 is connected to the oil cylinder 1, the four corners of the oil cylinder 1 mounting plate are connected to the pressing sleeve 11 below through the pull rod 5, the stop bolt 3 is located on both sides of the oil cylinder 1, and is connected to the diagonal of the oil cylinder mounting plate 2, the stopper iron rod 4 is located below the stop bolt 3, and is connected to the fixing plate 7 of the plugging device, the stopper iron rod 4 cooperates with the stop bolt 3 to adjust the retraction stroke of the oil cylinder 1, and then adjusts the expansion amount of the plug 12, and the pressure plate 6 is fixed to the lower end of the oil cylinder 1, and is used to contact with the core shaft 9 to prevent rotation;

[0015] The blocking structure includes a blocking device fixing plate 7, a joint 8, a core shaft 9, and a fixed sleeve 10. The blocking device fixing plate 7 is provided with a hole for the pull rod 5 to pass through. The joint 8 is fixed to the oil cylinder 1. The core shaft 9 is fixedly connected to a pressure cover 15 at the lower end and always keeps in contact with the joint 8. The fixed sleeve 10 is fixed to the blocking device fixing plate 7. The outer side of the fixed sleeve 10 is connected to a pressure sleeve 11, a blocking 12 and a limiting sleeve 13 in sequence from top to bottom, and the bottom end is connected to the pressure cover 15.

[0016] The core shaft 9 is sleeved with a quenching pad 14 , and the quenching pad 14 is in contact with an adjusting bolt 16 connected to a pressure cover 15 .

[0017] The plugs 12 are two in number and are separated by a limiting sleeve 13 in the middle to achieve a double-layer expansion seal. Example 2

[0018] The working process of the utility model is as follows:

[0019] The fixed sleeve 10 and the blocking device fixing plate 7 are fixed in practical application. Figure 2 When the oil cylinder 1 is in the extended state, it is not working, that is, it is in the unexpanded state. When working, the oil cylinder 1 retracts to drive the joint 8, the core shaft 9, and the pressure cover 15 to move upward, and the seal 12 between the pressure cover 15 and the limit sleeve 13 and the seal 12 between the limit sleeve 13 and the pressure sleeve 11 are compressed at the same time to reach the expanded and sealed state. When the iron rod 4 contacts the stop bolt 3, it retracts into place and the operation is completed.

Claims

1. A cylinder hole plugging device for leak testing of an engine cylinder block, characterized in that: The cam is an oil cylinder, and the cam is connected to the oil cylinder by a plurality of threading means. The cam is connected to the oil cylinder by a plurality of threading means. The cam is connected to the oil cylinder by a plurality of threading means. The cam is connected to the oil cylinder by a plurality of threading means. The sealing structure includes a sealing device fixing plate, a joint, a core shaft, and a fixed sleeve. The sealing device fixing plate is provided with a hole for the pull rod to pass through. The joint is fixed on the oil cylinder. The core shaft is fixedly connected to the pressure cover at the lower end and always keeps in contact with the joint. The fixed sleeve is fixed on the sealing device fixing plate. The outer side of the fixed sleeve is connected to the pressure sleeve, the sealing and the limit sleeve in sequence from top to bottom, and the bottom end is connected to the pressure cover.

2. The cylinder hole plugging device for engine cylinder leak testing according to claim 1, characterized in that: A quenching pad is sleeved on the core shaft, and the quenching pad is in contact with an adjusting bolt connected to the pressure cover.

3. The cylinder hole plugging device for engine cylinder leak testing according to claim 1 or 2, characterized in that: The plugging is in two parts, which are separated by a limiting sleeve in the middle to achieve double-layer expansion sealing.

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