CN219967724U - Hydraulic cylinder tube air tightness detection clamp - Google Patents
Hydraulic cylinder tube air tightness detection clamp Download PDFInfo
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- CN219967724U CN219967724U CN202321498567.7U CN202321498567U CN219967724U CN 219967724 U CN219967724 U CN 219967724U CN 202321498567 U CN202321498567 U CN 202321498567U CN 219967724 U CN219967724 U CN 219967724U
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- pressing plate
- sealing ring
- hydraulic cylinder
- tightness detection
- air tightness
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- 230000007547 defect Effects 0.000 description 3
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- 239000006096 absorbing agent Substances 0.000 description 1
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Abstract
The utility model provides a hydraulic cylinder barrel air tightness detection clamp, and belongs to the technical field of machinery. It has solved the inaccurate problem of current device testing result. The hydraulic cylinder air tightness detection clamp comprises a bottom plate, a lower pressing plate horizontally arranged on the bottom plate and an upper pressing plate arranged opposite to the lower pressing plate, wherein the upper pressing plate is driven to lift by a driving mechanism, an upper sealing ring and a lower sealing ring are respectively fixed on the bottom surface of the upper pressing plate and the top surface of the lower pressing plate, two air holes vertically penetrate through the upper pressing plate, and the upper sealing ring and the lower sealing ring are both of a hard sealing ring; the top surface of the lower pressing plate is provided with a convex block coaxial with the lower sealing ring, and the lower sealing ring is sleeved outside the convex block; the outer side of the lug is provided with a conical surface with the diameter gradually increasing from top to bottom, the upper side of the conical surface extends to the top surface of the lug, the lower side of the conical surface extends to be flush with the top surface of the lower sealing ring, and the maximum diameter of the conical surface is the same as the inner diameter of the cylinder barrel. The hydraulic cylinder barrel air tightness detection clamp is accurate in detection result.
Description
Technical Field
The utility model belongs to the technical field of machinery, and relates to an air tightness detection clamp, in particular to a hydraulic cylinder air tightness detection clamp.
Background
The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion).
The cylinder barrel is an important part of the hydraulic cylinder, and the cylinder barrel is generally required to be subjected to air tightness detection after being processed so as to detect whether leakage defects exist on the wall of the cylinder barrel. The utility model provides a cylinder gas tightness detection device in car bumper shock absorber suitable for industry thing networking (application number: 202211367961.7) that current gas tightness check out test set is disclosed like chinese patent storehouse, including the workstation, four landing legs of vertical setting side by side on the workstation, the landing leg top is fixed with the extension board, the extension board is provided with two pressure equipment cylinders, and two pressure equipment cylinders are located respectively between the left and right sides landing leg, pressure equipment cylinder below is provided with down the connecting plate, pushes down the connecting plate and is connected with the extension board through two connecting rods, pushes down through connecting rod and the cylinder flange joint of setting at the connecting rod both ends between connecting plate and the pressure equipment cylinder, push down the connecting plate below and set up the end cap, it still is provided with the detection mouth to go up the end cap side, set firmly down the end cap side is provided with down the detection mouth, wherein down on the end cap with down the relative one side of detecting mouthful still be provided with high-pressure air inlet pipe, still include the operation box that sets up on the workstation, the operation box is connected with the pressure equipment cylinder.
In the detection device, the lower plug plugs the lower detection port by extending into the lower detection port, so that the lower plug can cover part of the side wall of the cylinder barrel, the side wall of the cylinder barrel is not detected, and the accuracy of the detection structure is affected.
Disclosure of Invention
The utility model aims to solve the problems in the prior art, and provides a hydraulic cylinder barrel air tightness detection clamp with an accurate detection structure.
The aim of the utility model can be achieved by the following technical scheme: the hydraulic cylinder air tightness detection clamp comprises a bottom plate, a lower pressing plate horizontally arranged on the bottom plate and an upper pressing plate arranged opposite to the lower pressing plate, wherein the upper pressing plate is driven to lift by a driving mechanism, an upper sealing ring and a lower sealing ring are respectively fixed on the bottom surface of the upper pressing plate and the top surface of the lower pressing plate, and two air holes vertically penetrate through the upper pressing plate; the top surface of the lower pressing plate is provided with a convex block coaxial with the lower sealing ring, and the lower sealing ring is sleeved outside the convex block; the outer side of the lug is provided with a conical surface with the diameter gradually increasing from top to bottom, the upper side of the conical surface extends to the top surface of the lug, the lower side of the conical surface extends to be flush with the top surface of the lower sealing ring, and the maximum diameter of the conical surface is the same as the inner diameter of the cylinder barrel.
During actual installation, the pressure gauge and the air inlet pipe are respectively installed on the two air holes; when the cylinder barrel is used, the cylinder barrel is positioned between the upper pressing plate and the lower pressing plate, the top surface and the bottom surface of the cylinder barrel are respectively pressed on the upper sealing ring and the lower sealing ring to form sealing under the action of the driving mechanism, then gas is injected into the cylinder barrel through the gas inlet pipe, and whether the cylinder barrel wall has leakage defects is judged by observing the numerical change of the pressure gauge.
Under the cooperation of the conical surface and the hard lower sealing ring, on the premise of stabilizing the pre-positioning cylinder barrel, the contact between the lower pressing plate and the side wall of the cylinder barrel is in line contact, so that the side wall of the cylinder barrel is almost completely exposed to be detected, and the accuracy of a detection result is effectively improved.
In the hydraulic cylinder barrel air tightness detection clamp, the outer side face of the convex block further comprises an outer circumferential face coaxial with the convex block, the inner side face of the lower sealing ring is matched with the outer circumferential face and is in close contact with the outer circumferential face, namely the lower sealing ring is fixedly connected with the convex block in a close fit mode, and the lower sealing ring is convenient to install.
In the hydraulic cylinder air tightness detection clamp, the outer diameter of the lower sealing ring is larger than the outer diameter of the cylinder barrel, so that the contact area between the lower sealing ring and the bottom surface of the cylinder barrel is effectively increased, and the accuracy of a detection structure is ensured.
In the hydraulic cylinder air tightness detection clamp, the top surface of the lower pressing plate is further provided with the convex ring, the convex ring is coaxial with the convex block, and the lower sealing ring and the convex block are both positioned in the convex ring. The lower sealing ring and the protruding block are hidden at the inner side of the convex ring, so that the protection effect is achieved, the two parts are prevented from being deformed by external collision, and the accuracy of the detection structure is further ensured.
In the hydraulic cylinder air tightness detection clamp, the bottom plate is further provided with the translation mechanism for driving the lower pressing plate to reciprocate radially along the convex ring, so that the lower pressing plate is automatically aligned with the upper pressing plate or staggered with the upper pressing plate, an avoidance space is formed for manually placing the cylinder, the cylinder is automatically moved to the detection station under the action of the translation mechanism, and the operation is more convenient.
In the hydraulic cylinder barrel air tightness detection clamp, the lower pressing plate is in sliding connection with the bottom plate through the connecting structure, so that the sliding stability and the sliding precision of the lower pressing plate are improved.
In the hydraulic cylinder barrel air tightness detection clamp, the connecting structure comprises a linear guide rail horizontally fixed on the bottom plate and a sliding block installed on the linear guide rail, the length direction of the linear guide rail is consistent with the sliding direction of the lower pressing plate, and the lower pressing plate is fixedly connected with the sliding block.
As another scheme, in the hydraulic cylinder barrel air tightness detection clamp, the connecting structure comprises a sliding groove formed in the bottom plate and a guide block arranged in the sliding groove in a sliding manner, the length direction of the sliding groove is consistent with the sliding direction of the lower pressing plate, and the lower pressing plate is fixedly connected with the guide block.
In the hydraulic cylinder air tightness detection clamp, the lower pressing plate comprises a base plate and a main plate which are horizontally arranged, the main plate is pressed on the base plate and can be detachably and fixedly connected through screws, the lower sealing ring, the convex ring and the convex block are all arranged on the main plate, the base plate is fixedly connected with the sliding block, and therefore, cylinder cylinders of different types can be adapted only by replacing the main plate, and the operation is convenient.
In the hydraulic cylinder barrel air tightness detection clamp, the translation mechanism is a first cylinder, and a cylinder body and a piston rod of the first cylinder are respectively fixedly connected with the bottom plate and the base plate.
Compared with the prior art, the hydraulic cylinder barrel air tightness detection clamp has the following advantages:
1. under the cooperation of the conical surface and the hard lower sealing ring, on the premise of stabilizing the pre-positioning cylinder barrel, the contact between the lower pressing plate and the side wall of the cylinder barrel is in line contact, so that the side wall of the cylinder barrel is almost completely exposed to be detected, and the accuracy of a detection result is effectively improved.
2. The lower sealing ring and the protruding block are hidden at the inner side of the convex ring, so that the protection effect is achieved, the two parts are prevented from being deformed by external collision, and the accuracy of the detection structure is further ensured.
Drawings
Fig. 1 is a schematic perspective view of the hydraulic cylinder air tightness detection clamp.
Fig. 2 is a schematic diagram of a sectional structure of the hydraulic cylinder tube air tightness detection clamp.
Fig. 3 is an enlarged schematic view of the structure at a in fig. 2.
In the figure, 1, a bottom plate; 2. a lower pressing plate; 2a, bumps; 2a1, conical surface; 2a2, an outer circumferential surface; 2b, a convex ring; 2c, a main board; 2d, a substrate; 3. an upper press plate; 3a, air holes; 4. an upper sealing ring; 5. a frame; 6. a second cylinder; 7. an air tap; 8. a linear guide rail; 9. a slide block; 10. a first cylinder; 11. a cylinder; 12. and a lower sealing ring.
Description of the embodiments
The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.
Example 1
As shown in fig. 1, the hydraulic cylinder air tightness detection clamp comprises a bottom plate 1, a lower pressing plate 2 horizontally arranged on the bottom plate 1, and an upper pressing plate 3 arranged opposite to the lower pressing plate 2.
Wherein,
as shown in fig. 1 and 2, an upper sealing ring 4 is fixed on the bottom surface of the upper pressing plate 3, and the upper pressing plate 3 is driven to lift by a driving mechanism, specifically, the driving mechanism comprises a frame 5 fixed on the bottom plate 1 and a second cylinder 6 fixed on the frame 5, wherein the second cylinder 6 comprises a cylinder body and a piston rod, and the cylinder body and the piston rod of the second cylinder 6 are respectively fixedly connected with the frame 5 and the upper pressing plate 3. In order to improve the sliding precision of the lower pressing plate 2, a guide rod guide sleeve structure is further arranged between the upper pressing plate 3 and the frame 5, and the guide rod guide sleeve structure is in the prior art and is not described in detail herein. In an actual product, two air holes 3a vertically penetrate through the upper pressing plate 3, and air nozzles 7 are arranged at the two air holes 3 a.
As shown in fig. 2 and 3, a lower seal ring 12 is fixed on the top surface of the lower platen 2, and the upper seal ring 4 and the lower seal ring 12 are coaxially disposed. The upper seal ring 4 and the lower seal ring 12 are both hard seal rings, and preferably the lower seal ring 12 and the upper seal ring 4 are both hard alloy seal rings. As shown in fig. 1, the top surface of the lower pressing plate 2 is provided with a protruding block 2a coaxial with the lower sealing ring 12, and the lower sealing ring 12 is sleeved outside the protruding block 2 a. The outer side surface of the bump 2a is composed of a conical surface 2a1 and an outer circumferential surface 2a2, wherein the diameter of the conical surface 2a1 gradually increases from top to bottom, the upper side of the conical surface 2a1 extends to the top surface of the bump 2a, the lower side of the conical surface 2a1 extends to be flush with the top surface of the lower sealing ring 12, and the maximum diameter of the conical surface 2a1 is the same as the inner diameter of the cylinder 11.
In actual installation, the two air holes 3a are respectively provided with a pressure gauge and an air inlet pipe; when the cylinder 11 is used, the cylinder 11 is positioned between the upper pressing plate 3 and the lower pressing plate 2, the top surface and the bottom surface of the cylinder 11 are respectively pressed on the upper sealing ring 4 and the lower sealing ring 12 to form sealing under the action of the driving mechanism, then gas is injected into the cylinder 11 through the gas inlet pipe, and whether the cylinder wall of the cylinder 11 has leakage defects is judged by observing the numerical change of the pressure gauge.
Under the cooperation of the conical surface 2a1 and the hard lower sealing ring 12, on the premise of stabilizing the pre-positioning cylinder barrel 11, the contact between the lower pressing plate 2 and the side wall of the cylinder barrel 11 is in line contact, so that the side wall of the cylinder barrel 11 is almost completely exposed to the outside to be detected, and the accuracy of a detection result is effectively improved.
In the present embodiment of the present utility model, in the present embodiment,
the upper sealing ring 4 is fixedly connected with the upper pressing plate 3 in a welding way.
The lower seal ring 12 is positioned as follows: the inner side surface of the lower sealing ring 12 is matched with the outer circumferential surface 2a2 and is in close contact with the outer circumferential surface 2a, namely the lower sealing ring 12 is tightly matched and fixedly connected with the protruding block 2a, and the lower sealing ring 12 is convenient to install.
Further, the outer diameter of the lower sealing ring 12 is larger than that of the cylinder 11, so that the contact area between the lower sealing ring 12 and the bottom surface of the cylinder 11 is effectively increased, and the accuracy of the detection structure is ensured. The top surface of the lower pressing plate 2 is also provided with a convex ring 2b, the convex ring 2b and the convex block 2a are coaxial and are of an integrated structure, at the moment, the lower sealing ring 12 and the convex block 2a are both positioned in the convex ring 2b, so that the lower pressing plate has a protection effect, and the two parts are prevented from being deformed by external collision, so that the accuracy of the detection structure is further ensured.
As shown in fig. 1 and 2, the lower pressing plate 2 is slidably connected with the bottom plate 1 through a connecting structure, and a translation mechanism for driving the lower pressing plate 2 to reciprocate radially along the convex ring 2b is further arranged on the bottom plate 1, so that the lower pressing plate 2 is automatically aligned with the upper pressing plate 3 or staggered with the upper pressing plate 3, an avoidance space is formed for manually placing the cylinder 11, and the cylinder 11 is automatically moved to a detection station under the action of the translation mechanism, so that the operation is more convenient.
Wherein,
the connecting structure comprises a linear guide rail 8 horizontally fixed on the bottom plate 1 and a sliding block 9 arranged on the linear guide rail 8, the length direction of the linear guide rail 8 is consistent with the sliding direction of the lower pressing plate 2, and the lower pressing plate 2 is fixedly connected with the sliding block 9.
The translation mechanism is a first cylinder 10, and the cylinder body and the piston rod of the first cylinder 10 are respectively and fixedly connected with the bottom plate 1 and the base plate 2 d.
Further, the lower pressing plate 2 comprises a base plate 2d and a main plate 2c which are horizontally arranged, the main plate 2c is pressed on the base plate 2d and detachably and fixedly connected with the base plate 2d through screws, the lower sealing ring 12, the convex ring 2b and the convex block 2a are arranged on the main plate 2c, the base plate 2d is fixedly connected with the sliding block 9, and therefore, the cylinder barrel 11 of different types can be adapted only by replacing the main plate 2c, and the operation is convenient.
Example two
The structure and principle of the second embodiment are basically the same as those of the first embodiment, except that: the connecting structure comprises a chute arranged on the bottom plate 1 and a guide block arranged in the chute in a sliding manner, the length direction of the chute is consistent with the sliding direction of the lower pressing plate 2, and the lower pressing plate 2 is fixedly connected with the guide block.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.
Claims (10)
1. The hydraulic cylinder air tightness detection clamp comprises a bottom plate (1), a lower pressing plate (2) horizontally arranged on the bottom plate (1) and an upper pressing plate (3) arranged opposite to the lower pressing plate (2), wherein the upper pressing plate (3) is driven to lift by a driving mechanism, an upper sealing ring (4) and a lower sealing ring (12) are respectively fixed on the bottom surface of the upper pressing plate (3) and the top surface of the lower pressing plate (2), and two air holes (3 a) vertically penetrate through the upper pressing plate (3), and the hydraulic cylinder air tightness detection clamp is characterized in that the types of the upper sealing ring (4) and the lower sealing ring (12) are hard sealing rings; the top surface of the lower pressing plate (2) is provided with a convex block (2 a) coaxial with the lower sealing ring (12), and the lower sealing ring (12) is sleeved outside the convex block (2 a); the outer side surface of the lug (2 a) is provided with a conical surface (2 a 1) with the diameter gradually increasing from top to bottom, the upper side of the conical surface (2 a 1) extends to the top surface of the lug (2 a), the lower side of the conical surface (2 a 1) extends to be flush with the top surface of the lower sealing ring (12), and the maximum diameter of the conical surface (2 a 1) is the same as the inner diameter of the cylinder barrel (11).
2. The hydraulic cylinder tube air tightness detection clamp according to claim 1, wherein the outer side surface of the protruding block (2 a) further comprises an outer circumferential surface (2 a 2) coaxial with the protruding block (2 a), and the inner side surface of the lower sealing ring (12) is matched with and closely contacted with the outer circumferential surface (2 a 2).
3. The hydraulic cylinder tube tightness detection clamp according to claim 1 or 2, characterized in that the outer diameter of the lower sealing ring (12) is larger than the outer diameter of the cylinder tube (11).
4. A hydraulic cylinder air tightness detection clamp according to claim 3, characterized in that the top surface of the lower pressing plate (2) is further provided with a convex ring (2 b), the convex ring (2 b) is coaxial with the convex block (2 a), and the lower sealing ring (12) and the convex block (2 a) are both positioned in the convex ring (2 b).
5. The hydraulic cylinder barrel air tightness detection clamp according to claim 4, wherein the bottom plate (1) is further provided with a translation mechanism for driving the lower pressure plate (2) to reciprocate in the radial direction of the convex ring (2 b).
6. The hydraulic cylinder tube air tightness detection clamp according to claim 5, wherein the lower pressing plate (2) is slidably connected with the bottom plate (1) through a connecting structure.
7. The hydraulic cylinder barrel air tightness detection clamp according to claim 6, wherein the connecting structure comprises a linear guide rail (8) horizontally fixed on the bottom plate (1) and a sliding block (9) arranged on the linear guide rail (8), the length direction of the linear guide rail (8) is consistent with the sliding direction of the lower pressing plate (2), and the lower pressing plate (2) is fixedly connected with the sliding block (9).
8. The hydraulic cylinder barrel air tightness detection clamp according to claim 6, wherein the connecting structure comprises a chute formed in the bottom plate (1) and a guide block arranged in the chute in a sliding manner, the length direction of the chute is consistent with the sliding direction of the lower pressing plate (2), and the lower pressing plate (2) is fixedly connected with the guide block.
9. The hydraulic cylinder barrel air tightness detection clamp according to claim 7, wherein the lower pressing plate (2) comprises a base plate (2 d) and a main plate (2 c) which are horizontally arranged, the main plate (2 c) is pressed on the base plate (2 d) and detachably and fixedly connected with the base plate (2 d) through screws, the lower sealing ring (12), the convex ring (2 b) and the convex block (2 a) are arranged on the main plate (2 c), and the base plate (2 d) is fixedly connected with the sliding block (9).
10. The hydraulic cylinder barrel air tightness detection clamp according to claim 9, wherein the translation mechanism is a first cylinder (10), and a cylinder body and a piston rod of the first cylinder (10) are respectively fixedly connected with the bottom plate (1) and the base plate (2 d).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321498567.7U CN219967724U (en) | 2023-06-13 | 2023-06-13 | Hydraulic cylinder tube air tightness detection clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321498567.7U CN219967724U (en) | 2023-06-13 | 2023-06-13 | Hydraulic cylinder tube air tightness detection clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219967724U true CN219967724U (en) | 2023-11-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321498567.7U Active CN219967724U (en) | 2023-06-13 | 2023-06-13 | Hydraulic cylinder tube air tightness detection clamp |
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| Country | Link |
|---|---|
| CN (1) | CN219967724U (en) |
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2023
- 2023-06-13 CN CN202321498567.7U patent/CN219967724U/en active Active
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