Detachable device for plug of blank cap hole of cylinder body

Abstract

The utility model discloses a detachable device for plugging a blank cap hole of a cylinder body. The detachable device comprises a handle, a sleeve, a plug and a sealing ring, after the sealing ring is inserted into the machining hole, the handle is rotated to enable the plug to be close to the sleeve and extrude the sealing ring, so that the outer diameter of the sealing ring is enlarged, and the sealing ring and the inner wall of the machining hole can be sealed. The detachable device for blocking the cylinder body blank cap hole can be repeatedly used, the assembly and disassembly between the detachable device and the machining hole are simple and rapid, and the damage to the machining hole of the cylinder body is avoided.

Description

Technical Field

[0001] The utility model relates to the field of engine cylinder body detection, in particular to a detachable device for plugging a cylinder body cover hole used for cooperating with a cylinder body processing hole. Background Art

[0002] All cylinder bodies have a gas leak detection process after casting. Before the gas detection, many processing holes of the cylinder body need to be blocked. In the prior art, disposable blind covers are usually used to block the processing holes. The disposable blind covers are knocked into the processing holes by manual knocking. After the detection is completed, the disposable blind covers need to be manually removed from the processing holes in the subsequent assembly process. This method of sealing the processing holes is time-consuming and labor-intensive, and there is a risk of damage to the cylinder body.

[0003] Therefore, a new technical solution is needed to solve the above problems. Utility Model Content

[0004] In order to solve the problems caused by the prior art, the utility model provides a removable device for sealing a cylinder cover hole, which can be easily and quickly assembled and disassembled with the cylinder processing hole without causing damage to the cylinder processing hole.

[0005] In order to achieve the above-mentioned purpose, the utility model cylinder cover hole plugging detachable device can adopt the following technical scheme:

[0006] A detachable device for plugging a cylinder cover hole comprises a handle, a sleeve, a plug and a sealing ring; the plug comprises a docking portion and a head located at one end of the docking portion, the diameter of the head is larger than the diameter of the docking portion, and an internal threaded hole is axially arranged inside the docking portion; one end of the sleeve is an opening for accommodating the docking portion, and the other end of the sleeve is provided with a socket for inserting the handle, the socket extends axially along the sleeve and is connected to the opening; the sealing ring is sleeved on the docking portion and is located between the front end surface of the docking portion and the head; a stud extends forward from one end of the handle inserted into the socket, and the stud is threadedly connected to the internal threaded hole of the plug, and the plug is moved close to the sleeve by rotating the handle to squeeze the sealing ring so that the outer diameter of the sealing ring becomes larger.

[0007] Furthermore, an outer surface of the docking portion is inwardly concavely provided with a longitudinal positioning groove parallel to the axial direction, and a first positioning pin inserted into the positioning groove is provided in the sleeve, and the diameter of the first positioning pin is smaller than the length of the positioning groove.

[0008] Furthermore, the outer surface of the handle is provided with a circle of inwardly recessed grooves; the sleeve is provided with a second positioning pin inserted into the groove, and the diameter of the second positioning pin is the same as the width of the groove.

[0009] Furthermore, the side wall of the sleeve is provided with an insertion hole for inserting the first positioning pin.

[0010] Furthermore, the side wall of the sleeve is provided with an insertion hole for inserting the second positioning pin.

[0011] Beneficial effects: Compared with the prior art, the cylinder body cover hole plugging and detachable device provided by the utility model is suitable for filling and sealing the processing hole during cylinder body gas inspection. After the sealing ring is inserted into the processing hole, the plug can be screwed together with the internal threaded hole of the stud and the plug by rotating the handle to make the plug close to the sleeve and squeeze the sealing ring to increase the outer diameter of the sealing ring, so that the sealing ring can form a seal with the inner wall of the processing hole; when the inspection is completed, the handle is rotated in the opposite direction to restore the outer diameter of the sealing ring and release the seal with the inner wall of the processing hole, so that the cylinder body cover hole plugging and detachable device can be removed from the processing hole. The cylinder body cover hole plugging and detachable device can be reused, and the assembly and disassembly between the processing hole and the plug are simple and quick, and will not cause damage to the cylinder body processing hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a three-dimensional exploded view of the detachable device for plugging the cylinder cover hole of the utility model;

[0013] Figure 2 This is a cross-sectional exploded view of a detachable device for plugging a cylinder cover hole of the utility model;

[0014] Figure 3 This is a cross-sectional view of the utility model after the assembly of the detachable device for plugging the cylinder cover hole;

[0015] Figure 4 It is a schematic diagram of the detachable device for plugging the cylinder cover hole of the utility model and the processing hole, and shows the state where the sealing ring is not squeezed;

[0016] Figure 5 It is a schematic diagram of the detachable device for plugging the cover hole in the utility model when cooperating with the processed hole, and shows the state in which the sealing ring is squeezed to form a seal. DETAILED DESCRIPTION

[0017] The present invention is further explained below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the following specific implementation methods are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0018] See also Figures 1 to 3 As shown, the utility model discloses a detachable device for plugging a cylinder cover hole, comprising a handle 1, a sleeve 2, a plug 6, and a sealing ring 5.

[0019] The plug 6 includes a docking portion 61 and a head 62 located at one end of the docking portion, and the diameter of the head 62 is larger than the diameter of the docking portion 61. An internal threaded hole 64 is axially arranged inside the docking portion 61; one end of the sleeve 2 is an opening 21 for accommodating the docking portion 61, and the other end of the sleeve 2 is provided with a plug hole 22 for inserting the handle 1, and the plug hole 22 extends along the axial direction of the sleeve and communicates with the opening. The sealing ring 5 is sleeved on the docking portion 61 and is located between the front end surface of the docking portion 61 and the head 62; a stud 11 extends forward from one end of the handle 1 inserted into the plug hole 22, and the stud is threadedly connected to the internal threaded hole 64 of the plug 6. By rotating the handle 1, the plug 6 is close to the docking portion 61, and the sealing ring 5 is squeezed to increase the outer diameter of the sealing ring 5.

[0020] In the device, the plug 6 needs to be able to move axially but not rotate relative to the sleeve 2, and the handle 1 needs to be able to rotate but not move axially. Therefore, a longitudinal positioning groove 63 parallel to the axial direction is provided inwardly on the outer surface of the docking portion 61, and a first positioning pin 4 is provided in the sleeve 2 to be inserted into the positioning groove 63, and the diameter of the first positioning pin 4 is smaller than the length of the positioning groove 63; and a circle of inwardly recessed grooves 12 is provided on the outer surface of the handle 1; a second positioning pin 3 is provided in the sleeve 2 to be inserted into the groove 12, and the diameter of the second positioning pin 3 is the same as the width of the groove 12. Through the cooperation of the first positioning pin 4 and the positioning groove 63, the plug 6 cannot rotate, but can only be restricted to move axially relative to the first positioning pin 4; through the cooperation of the second positioning pin 3 and the groove 12, the handle 1 cannot move axially but can only rotate. The side wall of the sleeve 2 is provided with an insertion hole for the first positioning pin 4 and the second positioning pin 3 to be inserted.

[0021] When the cylinder body cover hole plugging and removable device is used, Figure 4 As shown, the sealing ring 5 at the front end of the device is inserted into the processing hole of the cylinder body 7. At this time, the sealing ring 5 has not been squeezed and a gap is formed with the processing hole. Figure 5 As shown, by rotating the handle 1, the stud and the internal threaded hole of the plug are threadedly connected. By rotating the handle 1, the plug 6 is brought close to the sleeve 2 to squeeze the sealing ring 5 so that the outer diameter of the sealing ring 5 becomes larger, so that the sealing ring 5 can form a seal with the inner wall of the processed hole. When the detection is completed, the handle is rotated in the opposite direction to restore the outer diameter of the sealing ring and release the seal between the inner wall of the processed hole, so that the cylinder cover hole plugging detachable device can be removed from the processed hole.

Claims

1. A removable device for plugging a cylinder cover hole, characterized in that: The invention comprises a handle (1), a sleeve (2), a plug (6) and a sealing ring (5); the plug (6) comprises a docking portion (61) and a head portion (62) located at one end of the docking portion, the diameter of the head portion is larger than the diameter of the docking portion, and an internal threaded hole (64) is axially arranged inside the docking portion; one end of the sleeve (2) is an opening (21) for accommodating the docking portion (61), and the other end of the sleeve (2) is provided with a plug hole (22) for inserting the handle (1), the plug hole (22) extends along the axial direction of the sleeve and is connected to the opening; the sealing ring (5) is sleeved on the docking portion (61) and is located between the front end surface of the docking portion (61) and the head portion (62); a stud (11) extends forward from one end of the handle (1) inserted into the plug hole (22), and the stud is threadedly connected to the internal threaded hole (64) of the plug (6); by rotating the handle (1), the plug (6) is moved close to the docking portion (61) to squeeze the sealing ring (5) so that the outer diameter of the sealing ring (5) increases.

2. The removable device for plugging the cylinder cover hole according to claim 1, characterized in that: The outer surface of the docking portion (61) is inwardly concavely provided with a longitudinal positioning groove (63) parallel to the axial direction, and the sleeve (2) is provided with a first positioning pin (4) inserted into the positioning groove (63), and the diameter of the first positioning pin (4) is smaller than the length of the positioning groove (63).

3. The removable device for plugging the cylinder cover hole according to claim 1 or 2, characterized in that: The outer surface of the handle (1) is provided with a circle of inwardly recessed grooves (12); the sleeve (2) is provided with a second positioning pin (3) inserted into the groove (12); the diameter of the second positioning pin (3) is the same as the width of the groove (12).

4. The removable device for plugging the cylinder cover hole according to claim 2, characterized in that: The side wall of the sleeve (2) is provided with an insertion hole for inserting the first positioning pin (4).

5. The removable device for plugging the cylinder cover hole according to claim 3, characterized in that: The side wall of the sleeve (2) is provided with an insertion hole for inserting the second positioning pin (3).

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