Oil duct leakage test plugging pull rod displacement mechanism

Abstract

The utility model discloses an oil duct leakage test plugging pull rod displacement mechanism, and relates to the technical field of oil duct leakage test detection. Comprising a fixed seat, a positioning sleeve is arranged on the fixed seat and close to the center, a movable column is movably connected to the inner side of the positioning sleeve, a control frame is fixedly welded to the top of the movable column, a plugging head is arranged at the lower right corner of the movable column, a T-shaped plate and a control plate are rotatably connected to the bottom of the plugging head, and a locking mechanism for fixing the movable column is arranged at the top end of the positioning sleeve. And a regulation and control mechanism penetrating through the movable column is slidably connected to the control frame and used for conducting displacement adjustment on the plugging head, the regulation and control mechanism comprises a first adjusting rod and a second adjusting rod, and sealing sleeves parallel to each other are arranged on the outer side of the plugging head. The position of the plugging head is accurately adjusted, the size of the sealing sleeve is controlled, and multiple accurate sealing is carried out in the oil duct, so that the positive force of plugging is increased, and the stability and reliability of plugging are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil passage leak detection, in particular to a displacement mechanism for a pull rod for plugging and leak testing of an oil passage. Background Technique

[0002] Plugging and leak testing of oil passages is an important link in the manufacturing and testing processes of engines. Its main purpose is to ensure the sealing performance of engine oil passages. In the leak testing of cylinder block oil passages, due to the conveying posture and structural problems of the cylinder block, it is difficult to plug the oil passage pipes, which affects the progress of leak testing.

[0003] In the prior art, a displacement mechanism for a pull rod for plugging and leak testing with the publication number of CN210770210U includes: a support structure, a driving device, a plugging device and a plugging plate; the support structure is installed on the plugging plate; the driving device is installed on the support structure, the plugging device is hinged to the bottom end of the driving device and is also hinged to the support structure; it moves up and down along the support structure under the drive of the driving device. This solution solves the problem in the prior art that the oil holes cannot be safely plugged during leak testing due to the structural problems of the cylinder block itself.

[0004] However, there are still some deficiencies in the above solution. For example, there are still great limitations in adjusting the plugging head, the control effect on the angle and position of the plugging head is poor, and during the plugging process, the plugging head is prone to collide and rub against the inner wall of the oil pipe, causing wear of the plugging head and affecting the sealing effect. In view of this, the utility model provides a displacement mechanism for a pull rod for plugging and leak testing of an oil passage. Content of the Utility Model

[0005] The purpose of the utility model is to provide a displacement mechanism for a pull rod for plugging and leak testing of an oil passage to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A displacement mechanism for a pull rod for plugging and leak testing of an oil passage, including a fixed seat, a positioning sleeve is arranged on the fixed seat and close to the center, an activity column is movably connected inside the positioning sleeve, a control frame is welded and fixed at the top of the activity column, a plugging head is arranged at the lower right corner of the activity column, a T-shaped plate and a control plate are rotatably connected to the bottom of the plugging head, a locking mechanism for fixing the activity column is arranged at the top end of the positioning sleeve, a regulation mechanism penetrating the activity column is slidably connected to the control frame for performing displacement adjustment on the plugging head, the regulation mechanism includes a first adjustment rod and a second adjustment rod, and sealing sleeves parallel to each other are arranged outside the plugging head.

[0007] Preferably, a threaded section is arranged at the top end of the positioning sleeve, a plurality of uniformly distributed square holes are opened on the threaded section, and a threaded sleeve is threadedly connected to the outside of the threaded section.

[0008] Furthermore, the locking mechanism includes three arc-shaped clamping plates distributed in an annular array. The arc-shaped clamping plates are arranged inside the threaded section, and extrusion blocks slidably connected to the square holes are arranged on the outer walls of the arc-shaped clamping plates.

[0009] Preferably, a connecting block is welded and fixed to the right side and near the bottom end of the movable column. The top end of the T-shaped plate is movably connected to the connecting block, and limiting rings are arranged on the outer wall of the movable column on both the upper and lower sides of the positioning sleeve.

[0010] Furthermore, symmetrically arranged sliding grooves are formed in the control frame. Both the first adjusting rod and the second adjusting rod are slidably connected to the sliding grooves, and the bottom end of the first adjusting rod is rotatably connected to the T-shaped plate, while the bottom end of the second adjusting rod is rotatably connected to the control plate.

[0011] Preferably, the cross-sections of both the first adjusting rod and the second adjusting rod are in a cross-shaped structure, and sliders are arranged at the top ends. The sliders are slidably connected to the control frame, and locking bolts are threadedly connected to the outer sides of the sliders.

[0012] Furthermore, a turn head integrally formed is arranged at the top end of the plugging head, and a number of movable balls are embedded in the turn head.

[0013] Preferably, the sealing sleeve is adhesively fixed to the plugging head. An inflation tube communicating with the inside of the sealing sleeve is arranged on the plugging head. The inflation tube sequentially penetrates through the movable column and the control frame, and a micro air pump connected to the other end of the inflation tube is installed at the top of the control frame.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] For the oil passage leak test plugging pull rod displacement mechanism, by providing a movable column, a control frame and a regulation mechanism, through the mutual cooperation of the regulation mechanism, the T-shaped plate and the control plate, the plugging head can be freely displaced and regulated. Through the precise adjustment of the position of the plugging head and the control of the size of the sealing sleeve, multiple precise seals are carried out inside the oil passage, thereby increasing the positive force of plugging and improving the stability and reliability of plugging.

[0016] Meanwhile, through the mutual cooperation of the turn head and the movable balls, guidance and protection can be carried out at the end of the plugging head, and the sealing sleeve on the plugging head can be prevented from rubbing or colliding with the inner wall of the oil pipe, reducing the wear of the plugging head and prolonging the service life of the plugging head. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of the present utility model;

[0018] Figure 2 is the structural schematic diagram of the fixed seat of the present utility model;

[0019] Figure 3 Schematic diagram of the arc-shaped splint structure of the present utility model;

[0020] Figure 4 Schematic diagram of the control frame structure of the present utility model;

[0021] Figure 5 Schematic diagram of the plugging head structure of the present utility model.

[0022] In the figure: 1, fixed seat; 11, positioning sleeve; 12, threaded section; 13, square hole; 14, arc-shaped splint; 15, extrusion block; 16, threaded sleeve; 2, movable column; 21, connecting block; 22, limiting ring; 3, control frame; 31, chute; 32, first adjusting rod; 33, second adjusting rod; 34, slider; 35, locking bolt; 4, plugging head; 41, T-shaped plate; 42, control plate; 43, steering head; 44, movable ball; 5, sealing sleeve; 51, charging pipe; 52, micro air pump. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Oil passage leak test plugging is an important link in the engine manufacturing and detection process. Its main purpose is to ensure the sealing performance of the engine oil passage. In the cylinder block oil passage leak test, due to the conveying posture and structural problems of the cylinder block, it is difficult to plug the oil passage pipe, which affects the progress of the leak test detection. The oil passage leak test plugging pull rod displacement mechanism provided by the present utility model, during the oil passage leak test plugging process, through the precise angle adjustment of the plugging head by the regulation mechanism and the size control of the sealing sleeve, multiple precise seals are carried out inside the oil passage, thereby increasing the positive force of the plugging and improving the stability and reliability of the plugging.

[0025] Such as Figures 1 - 5As shown in the figure, the present utility model provides a technical solution: an oil passage leak test plugging pull rod displacement mechanism, which includes a fixed seat 1. A positioning sleeve 11 is arranged on the fixed seat 1 near the center. An activity column 2 is movably connected inside the positioning sleeve 11. A control frame 3 is welded and fixed at the top of the activity column 2. A plugging head 4 is arranged at the lower right corner of the activity column 2. A T-shaped plate 41 and a control plate 42 are rotatably connected to the bottom of the plugging head 4. A locking mechanism for fixing the activity column 2 is arranged at the top end of the positioning sleeve 11. A regulating mechanism passing through the activity column 2 is slidably connected to the control frame 3 for displacement adjustment of the plugging head 4. The regulating mechanism includes a first adjusting rod 32 and a second adjusting rod 33. Sealing sleeves 5 parallel to each other are arranged outside the plugging head 4.

[0026] During plugging, through the bolt hole or other through holes, the activity column 2 is moved into the interior of the cylinder block. After that, the activity column 2 rotates or moves up and down in the positioning sleeve 11 to adjust the direction and height of the plugging head 4. Then, the first adjusting rod 32 and the second adjusting rod 33 slide on the control frame 3. Through the mutual cooperation of the regulating mechanism, the T-shaped plate 41 and the control plate 42, the position of the plugging head 4 is precisely adjusted, and the plugging head 4 is made to bring the sealing sleeve 5 into the interior of the oil pipe. Multiple precise seals are carried out inside the oil passage through the sealing sleeve 5, thereby increasing the positive force of plugging and improving the stability and reliability of plugging.

[0027] As Figure 2 and Figure 3 shown, a threaded section 12 is arranged at the top end of the positioning sleeve 11. A number of uniformly distributed square holes 13 are formed in the threaded section 12. A threaded sleeve 16 is threadedly connected to the outside of the threaded section 12.

[0028] The locking mechanism includes three arc-shaped clamping plates 14 arranged in an annular array. The arc-shaped clamping plates 14 are arranged inside the threaded section 12. An extrusion block 15 slidably connected to the square hole 13 is arranged on the outer wall of the arc-shaped clamping plate 14. The side of the extrusion block 15 close to the threaded sleeve 16 is a bevel structure.

[0029] When the threaded sleeve 16 is rotated to move the threaded sleeve 16 downward and extrude the extrusion block 15, the extrusion block 15 can slide inward along the square hole 13 and drive the arc-shaped clamping plates 14 to gradually approach the activity column 2, thereby tightly fixing the activity column 2 and preventing the activity column 2 from moving and affecting the adjustment of the plugging head 4 by the regulating mechanism.

[0030] A connection block 21 is welded and fixed at the right side and near the bottom end of the activity column 2. The top end of the T-shaped plate 41 is movably connected to the connection block 21. The inner diameter of the through hole on the connection block 21 is larger than the diameter of the rotating shaft at the top end of the T-shaped plate 41, which is convenient for the T-shaped plate 41 to move. Limiting rings 22 are arranged on the outer wall of the activity column 2 on both the upper and lower sides of the positioning sleeve 11. The limiting rings 22 play a role in limiting the up and down movement of the activity column 2.

[0031] As Figure 4 and Figure 5 shown, symmetric sliding grooves 31 are formed on the control frame 3. The first adjusting rod 32 and the second adjusting rod 33 are both slidably connected to the sliding grooves 31. The bottom end of the first adjusting rod 32 is rotatably connected to the T-shaped plate 41, and the bottom end of the second adjusting rod 33 is rotatably connected to the control plate 42.

[0032] The cross-sections of the first adjusting rod 32 and the second adjusting rod 33 are both cross-shaped structures, and sliders 34 are arranged at the top ends. The sliders 34 are slidably connected to the control frame 3, and locking bolts 35 are threadedly connected to the outer sides of the sliders 34.

[0033] The first adjusting rod 32 or the second adjusting rod 33 can be pushed to move through the slider 34. When the first adjusting rod 32 moves, the left end of the T-shaped plate 41 can be driven to move, and the rotating shaft at the top end of the T-shaped plate 41 can move on the connecting block 21, so as to preliminarily adjust the plugging head 4. After that, the second adjusting rod 33 is pushed downward to drive the control plate 42 to move. Through the mutual cooperation of the second adjusting rod 33 and the control plate 42, the angle of the plugging head 4 can be further adjusted, so that the plugging head 4 can enter the inner side of the oil pipe for plugging.

[0034] An integrally formed steering head 43 is arranged at the top end of the plugging head 4. A plurality of movable balls 44 are embedded in the steering head 43. The movable balls 44 can rotate freely on the steering head 43. Through the mutual cooperation of the steering head 43 and the movable balls 44, guiding and protection can be carried out at the end of the plugging head 4, and the collision with the inner wall of the oil pipe can be reduced.

[0035] The sealing sleeve 5 is adhesively fixed to the plugging head 4. An air charging pipe 51 communicated with the inside of the sealing sleeve 5 is arranged on the plugging head 4. The air charging pipe 51 sequentially penetrates through the movable column 2 and the control frame 3, and a micro air pump 52 connected to the other end of the air charging pipe 51 is installed on the top of the control frame 3.

[0036] When the sealing sleeve 5 is not inflated, the size of the sealing sleeve 5 is smaller than that of the steering head 43, which is convenient for the plugging head 4 to move to the inner side of the oil pipe. When the micro air pump 52 operates and inflates the inside of the sealing sleeve 5 through the air charging pipe 51, the sealing sleeve 5 can be tightly attached to the inner wall of the oil pipe, and double sealing can be carried out inside the oil pipe, achieving a good plugging effect.

[0037] Working principle: First, through the bolt holes or other through holes, the movable column 2 is moved into the interior of the cylinder block. Then, the movable column 2 performs a lifting and rotating motion inside the positioning sleeve 11 to adjust the plugging head 4 to a suitable position. After that, the first adjusting rod 32 slides along the chute 31 to drive the T-shaped plate 41 to move, and the first adjusting rod 32 and the T-shaped plate 41 cooperate with each other to preliminarily adjust the plugging head 4. After that, the second adjusting rod 33 slides along the chute 31 to drive the control plate 42 to move, and through the cooperation of the second adjusting rod 33 and the control plate 42, the plugging head 4 is further adjusted to a suitable angle;

[0038] Further, the plugging head 4 is moved to the inside of the oil pipe. During the movement, the steering head 43 and the movable ball 44 cooperate with each other to guide and adjust the plugging head 4. After that, the threaded sleeve 16 is rotated to squeeze the extrusion block 15 by the threaded sleeve 16 and drive the arc-shaped clamping plate 14. Close to the movable column 2 to fix the movable column 2 by the arc-shaped clamping plate 14. After that, the first adjusting rod 32 and the slider 34 at the top of the second adjusting rod 33 are fixed by the locking bolt 35 to prevent the plugging head 4 from moving. Then, the micro air pump 52 is operated to inflate the inside of the sealing sleeve 5 through the air charging pipe 51 to double-seal the sealing sleeve 5 inside the oil pipe.

[0039] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended embodiments and their equivalents.

Claims

1. An oil passage leak testing and plugging pull rod displacement mechanism, comprising a fixing seat (1), characterized in that: A positioning sleeve (11) is arranged on the fixing seat (1) near the center, the inner side of the positioning sleeve (11) is movably connected to a movable column (2), the top of the movable column (2) is welded and fixed with a control frame (3), a plugging head (4) is arranged at the lower right corner of the movable column (2), the bottom of the plugging head (4) is rotatably connected to a T-shaped plate (41) and a control plate (42), the top of the positioning sleeve (11) is provided with a locking mechanism for fixing the movable column (2), the control frame (3) is slidably connected to a regulating mechanism that penetrates the movable column (2) and is used for adjusting the displacement of the plugging head (4), the regulating mechanism comprises a first regulating rod (32) and a second regulating rod (33), and the outer side of the plugging head (4) is provided with a sealing sleeve (5) parallel to each other.

2. The oil passage leak testing and plugging pull rod displacement mechanism according to claim 1 is characterized in that: A threaded section (12) is provided at the top end of the positioning sleeve (11), a plurality of evenly distributed square holes (13) are provided on the threaded section (12), and a threaded sleeve (16) is threadedly connected to the outer side of the threaded section (12).

3. The oil passage leak testing and plugging pull rod displacement mechanism according to claim 1 is characterized in that: The locking mechanism comprises three groups of arc-shaped clamping plates (14) distributed in a ring array, wherein the arc-shaped clamping plates (14) are arranged on the inner side of the threaded section (12), and an extrusion block (15) slidably connected to the square hole (13) is arranged on the outer wall of the arc-shaped clamping plate (14).

4. The oil passage leak testing and plugging pull rod displacement mechanism according to claim 1, characterized in that: A connecting block (21) is welded and fixed on the right side of the movable column (2) and near the bottom end, the top end of the T-shaped plate (41) is movably connected to the connecting block (21), and limiting rings (22) are provided on the outer wall of the movable column (2) and on the upper and lower sides of the positioning sleeve (11).

5. The oil passage leak testing and plugging pull rod displacement mechanism according to claim 1, characterized in that: The control frame (3) is provided with symmetrical sliding grooves (31), the first adjusting rod (32) and the second adjusting rod (33) are both slidably connected to the sliding grooves (31), and the bottom end of the first adjusting rod (32) is rotationally connected to the T-shaped plate (41), and the bottom end of the second adjusting rod (33) is rotationally connected to the control plate (42).

6. The oil passage leak testing and plugging pull rod displacement mechanism according to claim 5 is characterized by: The cross-sections of the first adjusting rod (32) and the second adjusting rod (33) are both cross-shaped structures, and a slider (34) is provided at the top end. The slider (34) is slidably connected to the control frame (3), and a locking bolt (35) is threadedly connected to the outer side of the slider (34).

7. The oil passage leak testing and plugging pull rod displacement mechanism according to claim 1, characterized in that: An integrally formed steering head (43) is provided at the top end of the plugging head (4), and a plurality of movable balls (44) are embedded in the steering head (43).

8. The oil passage leak testing and plugging pull rod displacement mechanism according to claim 1, characterized in that: The sealing sleeve (5) is bonded and fixed to the plugging head (4); an air filling tube (51) communicating with the interior of the sealing sleeve (5) is provided on the plugging head (4); the air filling tube (51) passes through the movable column (2) and the control frame (3) in sequence; a micro air pump (52) connected to the other end of the air filling tube (51) is installed on the top of the control frame (3).

Images