A cylinder liner tightness detection device

Abstract

The utility model relates to cylinder detection technical field especially relates to a cylinder liner airtightness detection device, it includes: detection pool, fixedly connected in the gas cylinder of detection pool outside, the lifting frame of sliding connection on detection pool, fixedly connected on the motor of lifting frame, the first gear of rotary connection in lifting frame, and the output of motor is fixedly connected with the first gear, two groups of clamping arms of sliding connection on lifting frame, first rack fixedly connected on two groups of clamping arms respectively, two first racks all are engaged with first gear, and the tooth direction is set in reverse, the end of fixedly connected in clamping arm's supporting block, is equipped with the embedding part for embedding cylinder liner in supporting block. The utility model adopts liquid soaking type detection mode, converts airtightness result into visual bubble phenomenon, can obtain detection result fast, its operation is simple and convenient, and detection is efficient, is applicable to large quantities cylinder liner detection, and use effect is remarkable.

Description

Technical Field

[0001] This utility model relates to the field of cylinder testing technology, and in particular to a cylinder liner sealing test device. Background Technology

[0002] Motorcycle cylinder assemblies are mainly composed of key components such as the cylinder block, cylinder liner, and piston assembly. Among these, the cylinder liner, as a crucial friction pair that directly engages with the piston assembly, plays a vital role in sealing the combustion chamber, guiding piston movement, and conducting heat. In other words, the sealing performance of the cylinder liner has a decisive impact on the overall engine performance. During engine operation, a high-temperature, high-pressure combustion environment forms inside the cylinder liner. If the cylinder liner has a sealing defect, it will lead to a series of chain reactions: First, leakage of combustion gases will cause a drop in cylinder pressure, directly affecting the engine's power output; second, the leaked high-temperature gases will contaminate the engine oil, accelerating oil degradation and exacerbating abnormal wear between the piston rings and the cylinder liner; in more severe cases, it may lead to cylinder scoring, knocking, and other malfunctions, endangering driving safety. Therefore, strict sealing tests must be performed during the manufacturing and assembly of cylinder liners; this is a critical step in ensuring engine quality.

[0003] However, existing cylinder liner sealing test methods generally suffer from problems such as complex operation and long testing cycle, making it difficult to meet the needs of modern mass production. Therefore, there is an urgent need to produce a device that can conveniently and quickly test cylinder sealing. Utility Model Content

[0004] To address the aforementioned deficiencies in the prior art, this utility model provides a convenient and rapid cylinder liner sealing detection device.

[0005] Technical solution: A cylinder liner sealing test device, comprising: a test chamber; a cylinder fixedly connected to the outside of the test chamber; a lifting frame slidably connected to the test chamber, the rod end of the cylinder being fixedly connected to the lifting frame for controlling the vertical displacement of the lifting frame; a motor fixedly connected to the lifting frame; a first gear rotatably connected inside the lifting frame, the output end of the motor being fixedly connected to the first gear; two sets of clamping arms slidably connected to the lifting frame for clamping and fixing the cylinder liner, the displacement of the lifting frame causing the ends of the clamping arms to extend into the test chamber; a first rack fixedly connected to the two sets of clamping arms respectively, both first racks meshing with the first gear, and the teeth being arranged in opposite directions; and a support block fixedly connected to the end of the clamping arm, the support block having an embedding part for embedding into the cylinder liner.

[0006] Furthermore, it is particularly preferred that the support block and the clamping arm are fixed in an assembled manner so that the support block can be replaced according to the cylinder liner size.

[0007] Furthermore, it is particularly preferred that the support block has deformable characteristics so as to fit into the cylinder liner through its own deformation.

[0008] Furthermore, particularly preferably, the device further includes: a support plate rotatably connected to the detection pool, the support plate being located directly below the end of the clamping arm; a second gear fixedly connected to the rotation shaft of the support plate; a second rack slidably connected to the detection pool, the second rack meshing with the second gear; a wedge block fixedly connected to the second rack; a limiting frame fixedly connected to the lifting frame, the limiting frame contacting the inclined surface of the wedge block; and a torsion spring fixedly connected between the rotation shaft of the support plate and the detection pool.

[0009] Furthermore, it is particularly preferred that the device further includes: a scale fixedly connected to the inner wall of the detection pool, the scale being arranged vertically to display the height of the detection liquid in the detection pool.

[0010] Furthermore, it is particularly preferred that the device also includes handles fixedly connected to both sides of the detection pool.

[0011] Beneficial Effects: This utility model adopts a liquid immersion detection method, transforming the airtightness result into a visible bubble phenomenon, enabling rapid acquisition of detection results. It is simple to operate, highly efficient, and suitable for large-scale cylinder liner inspection, with significant results. Furthermore, by equipping it with replaceable supports, the utility model's specific adaptability is enhanced, and the deformation characteristics of the supports improve the airtightness during clamping, further improving the detection accuracy. This utility model uses a rotatable support plate to support the cylinder liner, improving ease of use and preventing the support plate's position from affecting the movement of the cylinder liner by the clamping arm, ensuring smooth operation. Simultaneously, the support plate can automatically rotate following the displacement of the clamping arm, further improving the compatibility between the various components of this utility model. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram showing the positional structure of the cylinder, second gear, second rack, and wedge block of this utility model.

[0014] Figure 3 This is a cross-sectional view of the connection structure of the motor, the first gear, the first rack, and the clamping arm of this utility model.

[0015] The above-mentioned figures include the following reference numerals: 1. Detection pool, 2. Cylinder, 201. Rod end, 3. Lifting frame, 4. Motor, 5. First gear, 6. First rack, 7. Clamping arm, 8. Support plate, 9. Rotating shaft, 10. Second gear, 11. Second rack, 1101. Wedge block, 12. Torsion spring, 13. Limiting frame, 14. Support block, 15. Scale, 16. Handle. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0017] Example: A cylinder liner sealing performance testing device, see 1- Figure 3 The system includes: a detection pool 1; a cylinder 2 fixedly installed at the rear of the detection pool 1; a lifting frame 3 slidably installed on the detection pool 1, with the rod end 201 of the cylinder 2 fixedly connected to the lifting frame 3 for controlling the vertical displacement of the lifting frame 3; a motor 4 fixedly installed at the middle of the top of the lifting frame 3; a first gear 5 rotatably installed inside the lifting frame 3, with the output end of the motor 4 fixedly connected to the first gear 5 via a coupling; two sets of clamping arms 7 slidably installed on the lifting frame 3 for clamping and fixing the cylinder sleeve, the displacement of the lifting frame 3 causing the ends of the clamping arms 7 to extend into the detection pool 1; and two sets of clamping arms 7 respectively fixedly installed on the two sets of clamping arms 7. The first rack 6, both first racks 6 mesh with the first gear 5, and the teeth are arranged in opposite directions; the support block 14 is fixedly installed at the end of the clamping arm 7. The support block 14 is provided with an embedding part for embedding into the cylinder liner, so as to avoid relative displacement between the cylinder liner and the support block 14 and the clamping arm 7, which would cause unstable clamping. The support block 14 and the clamping arm 7 are fixed by assembly, specifically by threaded connection, so that the support block 14 can be flexibly replaced according to the cylinder liner size, ensuring a more fitting and stable fixation of the cylinder liner. The support block 14 has deformation characteristics and can fit tightly with the cylinder liner through its own deformation, effectively improving the sealing performance of the clamping arm 7 when fixing the cylinder liner.

[0018] During testing, an appropriate amount of testing liquid is first added to the testing pool 1, and the cylinder liner is placed between two support blocks 14. Then, the motor 4 is started, and through the meshing transmission of the first gear 5 and the first rack 6, the two sets of clamping arms 7 are driven to move closer to each other, so that the embedded part of the support block 14 extends into the cylinder liner. At the same time, the support block 14 undergoes moderate deformation, which not only achieves stable fixation of the cylinder liner but also forms a complete seal at both ends of the cylinder liner. Next, the cylinder 2 is started, and the lifting frame 3 is operated to immerse the cylinder liner in the testing liquid of the testing pool 1. The presence of air bubbles is observed to determine whether there is a leak in the cylinder liner. After the test is completed, the clamping arms 7 are controlled to rise and remove the cylinder liner from the testing pool 1. Then, the clamping arms 7 are controlled to separate, and the cylinder liner can be removed to replace the next cylinder liner to be tested.

[0019] This device uses a liquid immersion detection method to transform the airtightness result into a visible bubble phenomenon, enabling rapid acquisition of detection results. It is easy to operate, highly efficient, and suitable for large-scale cylinder liner inspection, with significant results. Furthermore, by equipping it with a replaceable support block 14, the device's adaptability is improved, and the deformation characteristics of the support block 14 enhance the airtightness during clamping, further improving the detection accuracy of this device.

[0020] See 1- Figure 3 The device further includes: a support plate 8 rotatably mounted on the detection pool 1, the support plate 8 being located directly below the end of the clamping arm 7; a second gear 10 fixedly mounted on the rotation shaft 9 of the support plate 8; a second rack 11 slidably mounted on the detection pool 1, the second rack 11 meshing with the second gear 10; a wedge block 1101 fixedly mounted on the second rack 11; a limiting frame 13 fixedly mounted on the lifting frame 3, the limiting frame 13 contacting the inclined surface of the wedge block 1101; and a torsion spring 12 fixedly mounted between the rotation shaft 9 of the support plate 8 and the detection pool 1.

[0021] In use, the cylinder liner is first placed on the support plate 8, and then the two clamping arms 7 are controlled to move closer to each other for clamping. When removing the cylinder liner, the two clamping arms 7 are controlled to separate, and the cylinder liner will be transferred to the support plate 8 for support. In this way, there is no need to continuously lift the cylinder liner during clamping and removing the cylinder liner, which effectively improves the ease of use of this device. When the lifting frame 3 moves upward and removes the clamping arm 7 from the detection pool 1, the limiting frame 13 will move upward and contact the wedge block 1101. With the help of the inclined plane, the second rack 11 will move. The second rack 11 will then control the support plate 8 to rotate to a horizontal state through the meshing transmission with the second gear 10. At this time, the cylinder 2 will stop running, and the torsion spring 12 will undergo torsional deformation. Under the locking action of the cylinder 2, the support plate 8 can maintain a stable state, thereby providing stable support for the cylinder liner placed on it. When the cylinder liner is stably clamped and fixed by the clamping arm 7 and transferred into the detection pool 1, the limiting frame 13 will move downward and disengage from the wedge block 1101. The wedge block 1101 will lose its force, and the torsion spring 12 will drive the support plate 8 to rotate back to its original position, thereby moving the support plate 8 away from below the clamping arm 7 so that the cylinder liner can be smoothly immersed in the detection pool 1. At the same time, the second gear 10 will drive the second rack 11 to reset.

[0022] This device supports the cylinder liner through a rotatable support plate 8, which not only improves the ease of use of the device, but also avoids the support plate 8 affecting the movement of the cylinder liner by the clamping arm 7 due to positional factors, thus ensuring the smooth operation of the device. At the same time, the support plate 8 can automatically rotate following the displacement of the clamping arm 7, further improving the coordination between the various components of the device.

[0023] See Figure 1The device also includes: a scale 15 fixedly installed on the inner wall of the detection pool 1, the scale 15 being arranged vertically to display the height of the detection liquid in the detection pool 1, making it convenient for the operator to add detection liquid according to the cylinder sleeve size and reduce waste; and handles 16 fixedly installed on the left and right sides of the detection pool 1 to simplify the handling process of the device, enhance the overall flexibility of the device, and make the transfer of the device between different working scenarios more convenient and efficient.

[0024] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent substitutions made within the principles of this utility model should be included within the protection scope of this utility model. Contents not described in detail in this utility model are existing technologies known to those skilled in the art.

Claims

1. A cylinder liner sealing performance testing device, characterized in that, include: The test pool (1); a cylinder (2) fixedly connected to the outside of the test pool (1); a lifting frame (3) slidably connected to the test pool (1), the rod end (201) of the cylinder (2) is fixedly connected to the lifting frame (3) to control the vertical displacement of the lifting frame (3); a motor (4) fixedly connected to the lifting frame (3); a first gear (5) rotatably connected to the lifting frame (3), the output end of the motor (4) is fixedly connected to the first gear (5); two sets of clamping arms (7) slidably connected to the lifting frame (3) for clamping and fixing the cylinder sleeve, the displacement of the lifting frame (3) will drive the end of the clamping arm (7) to extend into the test pool (1); a first rack (6) fixedly connected to the two sets of clamping arms (7), both first racks (6) mesh with the first gear (5), and the teeth are set in opposite directions; a support block (14) fixedly connected to the end of the clamping arm (7), the support block (14) is provided with an embedding part for embedding into the cylinder sleeve.

2. The cylinder liner sealing performance testing device according to claim 1, characterized in that, The support block (14) and the clamping arm (7) are fixed in an assembly manner so that the support block (14) can be replaced according to the cylinder liner size.

3. A cylinder liner sealing performance testing device according to claim 2, characterized in that, The support block (14) has deformable characteristics so that it can fit with the cylinder liner through its own deformation.

4. A cylinder liner sealing performance testing device according to claim 1, characterized in that, The device further includes: a support plate (8) rotatably connected to the detection pool (1), the support plate (8) being located directly below the end of the clamping arm (7); a second gear (10) fixedly connected to the rotation shaft (9) of the support plate (8); a second rack (11) slidably connected to the detection pool (1), the second rack (11) meshing with the second gear (10); a wedge block (1101) fixedly connected to the second rack (11); a limiting frame (13) fixedly connected to the lifting frame (3), the limiting frame (13) contacting the inclined surface of the wedge block (1101); and a torsion spring (12) fixedly connected between the rotation shaft (9) of the support plate (8) and the detection pool (1).

5. A cylinder liner sealing performance testing device according to claim 1, characterized in that, The device further includes: a scale (15) fixedly connected to the inner wall of the detection pool (1), the scale (15) being arranged vertically to display the height of the detection liquid in the detection pool (1).

6. A cylinder liner sealing performance testing device according to claim 1, characterized in that, The device also includes handles (16) fixedly connected to both sides of the detection pool (1).

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