Leakage testing device for auxiliary support surface of cylinder body

Abstract

The utility model provides a leakage testing device for an auxiliary support surface of a cylinder body. The leakage testing device comprises a cover plate, a guide limiting block and a connecting piece, one surface of the cover plate can cover the auxiliary bracket surface, and the other surface is fixed with a guide limiting block; the guide limiting block is provided with a guide hole, the guide hole is communicated with a cover plate through hole of the cover plate, the end of the connecting piece is provided with threads, and the connecting piece can be screwed into a threaded hole in the cylinder body after sequentially penetrating through the guide hole and the cover plate through hole, so that the cover plate is tightly attached to the auxiliary support face. A stop part is arranged in the guide hole and can prevent the connecting piece from being separated from the guide hole in the direction away from the auxiliary support face. According to the leakage testing device for the auxiliary support face of the cylinder body, the posture of the connecting piece is guaranteed through the arrangement of the guide hole, the connecting piece can be almost coaxial with the threaded hole all the time, the connecting piece does not need to be straightened in the screwing-in connection process, the working efficiency is improved, and the threaded hole cannot be damaged in the screwing-in process.

Description

Technical Field

[0001] The utility model relates to the field of engine design and manufacturing, in particular to a leakage testing device for a cylinder body auxiliary bracket. Background Art

[0002] The auxiliary bracket is one of the engine parts and is part of the oil circulation pipeline and cooling water circulation pipeline. It needs to be installed on the engine cylinder block. The engine cylinder block is provided with an auxiliary bracket surface for installing the auxiliary bracket. The auxiliary bracket surface needs to ensure sealing to ensure that the oil and cooling water are not mixed together to avoid engine failure. Therefore, during the engine manufacturing process, the auxiliary bracket surface needs to be leak tested.

[0003] In the existing engine manufacturing process, the plate is usually connected to the auxiliary bracket surface by bolts to make the auxiliary bracket surface sealed and the auxiliary bracket surface is tested for leakage. However, in order to adapt to the threaded hole position tolerance of the auxiliary bracket surface, the hole diameter on the plate usually has a certain margin, which requires manual alignment of the bolts when bolting so that the bolts are perpendicular to the threaded holes. This test method is not only inefficient, but also prone to deviation when manually aligning the bolts, causing damage to the threaded holes. Utility Model Content

[0004] The utility model provides a leakage testing device for a cylinder body auxiliary bracket, so as to overcome the problems of low testing efficiency and easy damage to threaded holes in the prior art.

[0005] A cylinder body auxiliary bracket leak testing device, comprising: a cover plate, a guide limit block and a connecting piece;

[0006] One side of the cover plate can cover the surface of the auxiliary bracket, and the other side is fixed with the guide limit block;

[0007] The guide stop block is provided with a guide hole, the guide hole is communicated with the cover plate through hole of the cover plate, the end of the connecting piece is provided with a thread, and can be screwed into the threaded hole on the cylinder body after passing through the guide hole and the cover plate through hole in sequence, so as to press the cover plate onto the surface of the auxiliary bracket;

[0008] A stopper is provided in the guide hole, which can prevent the connecting member from escaping from the guide hole in a direction away from the surface of the auxiliary bracket.

[0009] Furthermore, one end of the connecting piece is provided with a thread, and the other end extends out of the guide hole in a direction away from the surface of the auxiliary bracket.

[0010] Furthermore, the connecting member includes a clamping portion, which is arranged in the guide hole, and the end of the connecting member can be screwed into the threaded hole of the cylinder body, so that the clamping portion presses the cover plate onto the surface of the auxiliary bracket.

[0011] Furthermore, the stopper is an annular structure, and the stopper is arranged at an opening of the guide hole away from the cylinder body.

[0012] Furthermore, one end of the connecting piece is provided with a thread, and the other end is provided with a hexagonal column, and the hexagonal column passes through the stopper and extends out of the guide hole.

[0013] Furthermore, the through hole of the cover plate is a stepped hole, and the pressing portion can partially or completely enter the large-diameter portion of the stepped hole.

[0014] Furthermore, the guide limit block is provided with a through hole, and the fixing bolt passes through the through hole to be fixedly connected with the cover plate.

[0015] Furthermore, a sealing member is provided on a side of the cover plate that covers the auxiliary bracket surface.

[0016] The utility model discloses a leakage testing device for a cylinder body auxiliary bracket, which ensures the posture of a connecting piece by setting a guide hole, so that the connecting piece can always be nearly coaxial with the threaded hole. Not only does it not need to straighten the connecting piece when screwing in, thus improving work efficiency, but also the threaded hole will not be damaged during the screwing in process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the cylinder structure disclosed in the embodiment of the utility model when the auxiliary bracket and the leakage test device are not installed;

[0019] Figure 2 It is a schematic diagram of the cylinder structure disclosed in the embodiment of the utility model after the auxiliary bracket and the leakage test device are installed;

[0020] Figure 3 It is a structural schematic diagram of a cylinder body auxiliary bracket test leakage device disclosed in an embodiment of the utility model;

[0021] Figure 4 It is a bottom view schematic diagram of the structure of the cylinder body auxiliary bracket test leakage device disclosed in the embodiment of the utility model;

[0022] Figure 5 It is a top view of the cylinder body auxiliary bracket test leakage device disclosed in the embodiment of the utility model;

[0023] Figure 6 for Figure 5 Cross-sectional view from medium AA perspective;

[0024] Figure 7 for Figure 6 Enlarged view of part B.

[0025] In the figure:

[0026] 1. Cylinder body; 2. Auxiliary bracket surface; 3. Cover plate; 31. Cover plate through hole; 4. Guide limit block; 41. Guide hole; 42. Stopper; 5. Fixing bolt; 6. Connector; 61. Pressing part; 7. Sealing part. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment 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.

[0028] like Figure 1-7 As shown, this embodiment discloses a cylinder body auxiliary bracket leak test device, including: a cover plate 3, a guide limit block 4 and a connecting member 6;

[0029] like Figure 2 As shown, one side of the cover plate 3 can cover the auxiliary bracket surface 2, such as Figure 3 As shown, the guide limit block 4 is fixed on the other side;

[0030] The guide stopper 4 is provided with a guide hole 41, and the guide hole 41 is communicated with the cover plate through hole 31 of the cover plate 3. The end of the connecting member 6 is provided with a thread, and can be screwed into the threaded hole on the cylinder body 1 after passing through the guide hole 41 and the cover plate through hole 31 in sequence, so as to press the cover plate 3 onto the auxiliary bracket surface 2;

[0031] A stopper 42 is disposed in the guide hole 41 to prevent the connector 6 from escaping from the guide hole 41 in a direction away from the auxiliary bracket surface 2 .

[0032] The utility model discloses a leakage testing device for a cylinder body auxiliary bracket, which ensures the posture of a connecting piece by setting a guide hole, so that the connecting piece can always be nearly coaxial with the threaded hole. Not only does it not need to straighten the connecting piece when screwing in, thus improving work efficiency, but also the threaded hole will not be damaged during the screwing in process.

[0033] Specifically, before the connector 6 is screwed into the threaded hole, a longer portion of it will be suspended outside the threaded hole, and the suspended portion will droop downward under the action of gravity. The guide hole 41 allows the suspended portion of the connector 6 to be in a supported state, and will not form an angle with the threaded hole under the action of gravity. The installer can directly screw the connector 6 into the threaded hole without straightening it, which saves straightening time and improves work efficiency. In modern production, the beat of each process is very important, calculated in seconds. At present, the time for the auxiliary bracket surface test process is about 60 seconds, so saving the straightening time is very important for the auxiliary bracket surface test process, which can greatly improve the time of the entire process.

[0034] The length of the connecting member 6 and the guide hole 41 will affect the posture of the connecting member 6. In this embodiment, one end of the connecting member 6 is provided with a thread, and the other end extends out of the guide hole in a direction away from the auxiliary bracket surface 2, which can maximize the coaxiality of the connecting member 6 and the threaded hole. The portion extending out of the guide hole can be provided with a structure for applying torque, such as a hexagonal socket.

[0035] In this embodiment, the connecting member 6 is provided with a clamping portion 61, and the clamping portion 61 is arranged in the guide hole 41. The end of the connecting member 6 can be screwed into the threaded hole of the cylinder body 1, so that the clamping portion 61 presses the cover plate 3 onto the auxiliary bracket surface 2.

[0036] In addition to this embodiment, the pressing portion may also be arranged outside the guide hole, and the end of the connecting piece is screwed into the threaded hole so that the guide limit block and the cover plate are pressed together on the surface of the auxiliary bracket.

[0037] In this embodiment, the connecting member 6 is a columnar structure, and a columnar clamping portion 61 is provided in the middle. The diameter of the clamping portion 61 is larger than the diameter of the connecting member 6 body. As the threaded end of the connecting member 61 is screwed into the threaded hole, the clamping portion 61 can be pressed on the cover plate, so that the cover plate 3 is pressed on the auxiliary bracket surface 2.

[0038] The clamping part 61 can move axially in the guide hole 41 and can be displaced a small amount radially, so that the connector can adapt to the tolerance of the threaded hole on the cylinder body. The connector has one end with a thread and a rounded corner so that the connector can be smoothly inserted into the threaded hole.

[0039] In this embodiment, the stopper 42 is an annular structure, and the stopper 42 is arranged in the guide hole 41 at an opening away from the cylinder body 1. The pressing part is blocked by the stopper 42 and cannot pass through the stopper 42, so that the connecting member cannot leave the guide hole on the side of the stopper 42. The stopper 42 and the cover plate 3 limit the axial movement range of the connecting member, so that the connecting member, the cover plate and the limiting guide block are integrated, which facilitates installation, disassembly and transportation during operation, makes work more convenient, and improves work efficiency.

[0040] Before the connector is screwed into the threaded hole, one end is pre-extended into the threaded hole, and the other end is supported by the stopper or the inner wall of the guide hole, thereby preventing the suspended part of the connector from sagging under the action of gravity.

[0041] In this embodiment, one end of the connecting member 6 is provided with a thread, and the other end is provided with a hexagonal column, and the hexagonal column passes through the stopper 42 and extends out of the guide hole 41 .

[0042] Torque is applied to the connector through the hexagonal column so that the connector can be screwed into the threaded hole.

[0043] In this embodiment, the cover plate through hole 31 is a stepped hole, and the pressing portion 61 can partially or completely enter the large-diameter portion of the stepped hole. The large-diameter portion is coaxial with the guide hole and has the same diameter, which facilitates the axial movement of the connector in the guide hole.

[0044] The guide limit block 4 is provided with a through hole, and the fixing bolt 5 passes through the through hole and is fixedly connected to the cover plate 3. The connecting piece needs to be frequently screwed in and out of the threaded hole, which is easy to be damaged. The guide limit block 4 and the cover plate 3 are connected by the fixing bolt 5, and once the connecting piece is damaged, it is easy to replace.

[0045] The cover plate 3 is provided with a sealing member 7 on one side covering the auxiliary bracket surface 2. In this embodiment, the sealing member 7 has the same shape as the auxiliary bracket sealing member, so that the sealing environment of the test is closer to the sealing environment of the actual assembly, and the accuracy of the test is higher.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A cylinder body auxiliary bracket leak test device, characterized in that: include: A cover plate (3), a guide stop block (4) and a connecting piece (6); One side of the cover plate (3) is capable of covering the auxiliary bracket surface (2), and the other side is fixed with the guide limit block (4); The guide stop block (4) is provided with a guide hole (41), the guide hole (41) is communicated with the cover plate through hole (31) of the cover plate (3), the end of the connecting member (6) is provided with a thread, and after passing through the guide hole (41) and the cover plate through hole (31) in sequence, it can be screwed into the threaded hole on the cylinder body (1) to press the cover plate (3) onto the auxiliary bracket surface (2); A stopper (42) is provided in the guide hole (41) and is capable of preventing the connecting member (6) from escaping from the guide hole (41) in a direction away from the auxiliary bracket surface (2).

2. A cylinder body auxiliary bracket leak test device according to claim 1, characterized in that: One end of the connecting piece (6) is provided with a thread, and the other end extends out of the guide hole (41) in a direction away from the auxiliary bracket surface (2).

3. A cylinder body auxiliary bracket leak testing device according to claim 1, characterized in that: The connecting member (6) comprises a clamping portion (61), the clamping portion (61) being located in the guide hole (41), and the end of the connecting member (6) being capable of being screwed into the threaded hole of the cylinder body (1), so that the clamping portion (61) presses the cover plate (3) onto the auxiliary bracket surface (2).

4. A cylinder body auxiliary bracket leak testing device according to claim 3, characterized in that: The stopper (42) is an annular structure, and the stopper (42) is arranged at an opening of the guide hole (41) away from the cylinder body (1).

5. A cylinder body auxiliary bracket leak testing device according to claim 4, characterized in that: One end of the connecting piece (6) is provided with a thread, and the other end is provided with a hexagonal column, the hexagonal column passes through the stopper (42) and extends out of the guide hole (41).

6. A cylinder body auxiliary bracket leak testing device according to claim 3, characterized in that: The cover plate through hole (31) is a stepped hole, and the pressing portion (61) can partially or completely enter the large-diameter portion of the stepped hole.

7. A cylinder body auxiliary bracket leak testing device according to claim 1, characterized in that: The guide limit block (4) is provided with a through hole, and a fixing bolt (5) passes through the through hole to be fixedly connected to the cover plate (3).

8. A cylinder body auxiliary bracket leak testing device according to claim 1, characterized in that: A sealing member (7) is provided on one side of the cover plate (3) covering the auxiliary bracket surface (2).

Images