Anti-falling bimetal cylinder sleeve

Abstract

The utility model discloses an anti-drop bimetal cylinder sleeve, which relates to the technical field of bimetal cylinder sleeves and is technically characterized by comprising an outer metal sheath, an inner metal lining and a retainer ring, an annular groove matched with the retainer ring is arranged at one end between the outer metal sheath and the inner metal lining, and the outer metal sheath and the inner metal lining are arranged in the annular groove. A plurality of annularly-distributed locking grooves are formed in the positions, located on the inner wall of the annular groove, of the outer metal sheath, a plurality of annularly-distributed locking columns are slidably installed on the outer circumference of the check ring, an annular cavity is formed in the check ring, and a plurality of annularly-distributed screw rods are rotatably installed in the annular cavity; the screw rod is in threaded connection with a connecting plate, and the locking column is fixedly connected to one side of the connecting plate. According to the technical effects, the detachable check ring is arranged, after the inner metal lining is worn after being used for a long time, the check ring can be detached, then the inner metal lining is taken out, the inner metal lining can be detached and replaced independently, and the later maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of bimetallic cylinder liner technology, specifically to an anti-detachment bimetallic cylinder liner. Background Technology

[0002] Traditional high-pressure mud pumps or other pump valves use a double-layer metal structure with cold and hot inlays for the cylinder liner cavity. In production practice, due to the high-pressure reciprocating motion of the piston, the double-metal inner liner in the cylinder liner cavity is prone to detachment, causing trouble in production and use, shortening service life, increasing production costs, and even leading to production accidents.

[0003] To address the aforementioned issues, Chinese Patent CN2921371Y discloses an anti-detachment bimetallic cylinder liner, comprising an inner metal bushing and an outer metal sheath. The inner metal bushing is assembled into the outer metal sheath via an interference fit. An inner groove is machined on the upper end or both upper and lower ends of the outer metal sheath. After the inner metal bushing is inserted into it, an inner retaining spring or a retaining ring is installed in the inner groove machined on the upper end or both upper and lower ends of the outer metal sheath. An inwardly protruding step is left at the lower end of the outer metal sheath where no inner retaining spring or retaining ring is provided.

[0004] Regarding the aforementioned technologies, the inventors have discovered at least the following problems: In the aforementioned technologies, the method of welding the retaining ring to the outer metal sheath to limit and fix the inner metal bushing can achieve the effect of limiting and preventing the inner metal bushing from falling off. However, due to the welding of the retaining ring to the outer metal sheath, it is not convenient to disassemble and replace the inner metal bushing separately after long-term use and wear, resulting in excessively high maintenance costs in the later stages.

[0005] Therefore, we propose an anti-detachment bimetallic cylinder liner. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this utility model provides an anti-detachment bimetallic cylinder liner, which solves the problem that due to the welding of the retaining ring and the outer metal sleeve, it is inconvenient to disassemble and replace the inner metal bushing separately after long-term use and wear, resulting in excessively high maintenance costs in the later stages.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the present invention provides the following technical solution: a bimetallic cylinder liner with anti-detachment, comprising an outer metal sheath, an inner metal bushing, and a retaining ring, wherein the inner metal bushing is inserted into the interior of the outer metal sheath, and an annular groove adapted to the retaining ring is provided at one end between the outer metal sheath and the inner metal bushing, and the retaining ring is detachably installed in the annular groove.

[0010] The outer metal sheath has multiple annularly distributed locking grooves on the inner wall of the annular groove. Multiple annularly distributed locking pins are slidably installed on the outer circumference of the retaining ring. An annular cavity is formed inside the retaining ring. Multiple annularly distributed screws are rotatably installed inside the annular cavity. A connecting plate is threaded onto the screw. The locking pins are fixedly connected to one side of the connecting plate. A driving component is provided on one of the screws. An annular slide rail is fixedly connected to the inner circumference of the annular cavity. A rotatable bevel gear ring is slidably sleeved on the annular slide rail. A bevel gear that meshes with the bevel gear ring is fixedly connected to each screw.

[0011] Preferably, a guide positioning block is provided on one side of the outer circumference of the retaining ring, and a guide positioning groove adapted to the guide positioning block is provided on one side of the inner wall of the outer metal sleeve located in the annular groove.

[0012] Preferably, a rubber pad is abutting between the retaining ring and the annular groove.

[0013] Preferably, the driving component includes a worm gear rotatably mounted in an annular cavity, a nut fixedly connected to the end of the worm gear, and a worm wheel fixedly connected to the nut, wherein the worm gear meshes with the worm wheel.

[0014] Preferably, a groove is formed on one end face of the retaining ring, and the nut is disposed in the groove.

[0015] Preferably, a cover plate is provided at the opening of the groove.

[0016] Preferably, a guide rod is fixedly connected to one side of each screw in the annular cavity, and the connecting plate is slidably sleeved on the guide rod.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the present invention provides a method with the following beneficial effects:

[0019] 1. This utility model, by setting a detachable retaining ring, allows the inner metal bushing to be inserted into the outer metal sleeve along the annular groove during cylinder liner assembly. Then, the retaining ring is inserted into the annular groove to limit the inner metal bushing. After the inner metal bushing wears out from long-term use, the retaining ring can be removed to take out the inner metal bushing, which facilitates the individual disassembly and replacement of the inner metal bushing and reduces the later maintenance cost.

[0020] 2. This utility model, by setting a locking groove and a locking pin, allows the driving component to be operated after the retaining ring is inserted into the annular groove. The driving component drives the screw to rotate, which in turn drives the bevel gear to rotate. The bevel gear drives the bevel gear ring to rotate, which in turn drives all the bevel gear rings to rotate synchronously. This causes the bevel gear rings to drive the corresponding screw to rotate, which in turn causes the connecting plate to slide along the guide rod. This causes the connecting plate to drive the locking pin to insert into the locking groove, locking the retaining ring to the outer metal sheath, thus facilitating the disassembly and assembly of the retaining ring. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the outer metal sheath of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the inner metal bushing of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the retaining ring of this utility model;

[0025] Figure 5 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0026] Figure 6 This is a half-sectional structural diagram of the retaining ring of this utility model;

[0027] Figure 7 This utility model Figure 6 Enlarged view of the structure at point A in the middle.

[0028] In the picture:

[0029] 1. Outer metal sheath; 11. Annular groove; 12. Locking groove; 13. Guide positioning groove; 14. Rubber pad;

[0030] 2. Inner metal bushing;

[0031] 3. Retaining ring; 31. Locking pin; 32. Screw; 33. Connecting plate; 34. Driving component; 341. Worm gear; 342. Nut; 343. Worm wheel; 35. Circular slide rail; 36. Bevel gear ring; 37. Bevel gear; 38. Guide positioning block; 39. Cover plate; 310. Guide rod. Detailed Implementation

[0032] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0033] This utility model provides a technical solution:

[0034] Please see Figures 1-7 A type of anti-detachment bimetallic cylinder liner includes an outer metal sheath 1, an inner metal bushing 2, and a retaining ring 3. The inner metal bushing 2 is inserted into the interior of the outer metal sheath 1. One end between the outer metal sheath 1 and the inner metal bushing 2 is provided with an annular groove 11 that is adapted to the retaining ring 3. The retaining ring 3 is detachably installed in the annular groove 11. By setting the detachable retaining ring 3, when assembling the cylinder liner, the inner metal bushing 2 is inserted into the outer metal sheath 1 along the annular groove 11, and then the retaining ring 3 is inserted into the annular groove 11. The retaining ring 3 is used to limit the inner metal bushing 2. After the inner metal bushing 2 wears out after long-term use, the retaining ring 3 can be removed, and the inner metal bushing 2 can be taken out, which facilitates the individual disassembly and replacement of the inner metal bushing 2 and reduces the later maintenance cost.

[0035] Among them, a guide positioning block 38 is provided on one side of the outer circumference of the retaining ring 3, and a guide positioning groove 13 adapted to the guide positioning block 38 is provided on one side of the inner wall of the outer metal sleeve 1 located in the annular groove 11. By setting the guide positioning block 38 and the guide positioning groove 13, the retaining ring 3 can be guided and positioned, which facilitates the installation of the retaining ring 3.

[0036] Furthermore, a rubber pad 14 is abutted between the retaining ring 3 and the annular groove 11. By setting the rubber pad 14, before inserting the retaining ring 3, the rubber pad 14 is first placed into the annular groove 11. When the retaining ring 3 is inserted into the annular groove 11, it can press against the rubber pad 14, thus achieving a sealing effect between the outer metal sheath 1 and the inner metal bushing 2.

[0037] Specifically, the outer metal sheath 1 has multiple annularly distributed locking grooves 12 on the inner wall of the annular groove 11. Multiple annularly distributed locking pins 31 are slidably installed on the outer circumference of the retaining ring 3. An annular cavity is formed inside the retaining ring 3, and multiple annularly distributed screws 32 are rotatably installed inside the annular cavity. A connecting plate 33 is threaded onto each screw 32. The locking pins 31 are fixedly connected to one side of the connecting plate 33. A driving component 34 is provided on one of the screws 32. An annular slide rail 35 is fixedly connected to the inner circumference of the annular cavity. A rotatable bevel gear ring 36 is slidably sleeved on the annular slide rail 35. A bevel gear 37 that meshes with the bevel gear ring 36 is fixedly connected to each screw 32. The annular cavity contains multiple annularly distributed locking grooves 12. One side of the screw 32 is fixedly connected to a guide rod 310. The connecting plate 33 is slidably sleeved on the guide rod 310. By setting the locking groove 12 and the locking pin 31, when the retaining ring 3 is inserted into the annular groove 11, the driving component 34 can be operated. The driving component 34 drives the screw 32 to rotate, which in turn drives the bevel gear 37 to rotate. The bevel gear 37 drives the bevel ring 36 to rotate, which in turn drives all the bevel rings 36 to rotate synchronously. This causes the bevel rings 36 to drive the corresponding screw 32 to rotate, which in turn drives the connecting plate 33 to slide along the guide rod 310. This causes the connecting plate 33 to drive the locking pin 31 to insert into the locking groove 12, locking the retaining ring 3 to the outer metal sheath 1, which facilitates the disassembly and assembly of the retaining ring 3.

[0038] Specifically, the driving component 34 includes a worm 341 rotatably mounted in the annular cavity, a nut 342 fixedly connected to the end of the worm 341, and a worm wheel 343 fixedly connected to the screw 32. The worm 341 meshes with the worm wheel 343. By setting the driving component 34, during operation, it is only necessary to use a tool to rotate the nut 342. The nut 342 will drive the worm 341 to rotate, the worm 341 will drive the worm wheel 343 to rotate, and the worm wheel 343 will drive the screw 32 to rotate.

[0039] Furthermore, a groove is provided on one side end face of the retaining ring 3, and the nut 342 is placed in the groove. A cover plate 39 is provided at the opening of the groove. By providing the groove and the cover plate 39, the nut 342 can be protected and prevented from being damaged.

[0040] In practical use, the working principle of this utility model is as follows:

[0041] First, when assembling the cylinder liner, insert the inner metal bushing 2 into the outer metal sheath 1 along the annular groove 11. Then, first place the rubber pad 14 into the annular groove 11, then align the guide positioning block 38 of the retaining ring 3 with the guide positioning groove 13, insert the retaining ring 3 into the annular groove 11, and press it against the rubber pad 14.

[0042] Then, simply use a tool to rotate the nut 342. The nut 342 will drive the worm 341 to rotate, the worm 341 will drive the worm wheel 343 to rotate, the worm wheel 343 will drive the screw 32 to rotate, the screw 32 will drive the bevel gear 37 to rotate, the bevel gear 37 will drive the bevel ring 36 to rotate, the bevel ring 36 will drive all the bevel rings 36 to rotate synchronously, the bevel rings 36 will drive the corresponding screw 32 to rotate, the screw 32 will drive the connecting plate 33 to slide along the guide rod 310, the connecting plate 33 will drive the locking pin 31 to insert into the locking groove 12, locking the retaining ring 3 to the outer metal sleeve 1, and using the retaining ring 3 to limit the inner metal bushing 2.

[0043] After the inner metal bushing 2 wears out from long-term use, the retaining ring 3 can be removed, and then the inner metal bushing 2 can be taken out, making it easy to disassemble and replace the inner metal bushing 2 separately.

[0044] In summary, this anti-detachment bimetallic cylinder liner, by setting a detachable retaining ring 3, allows the retaining ring 3 to be removed after the inner metal bushing 2 has worn out from long-term use, thereby facilitating the individual disassembly and replacement of the inner metal bushing 2 and reducing subsequent maintenance costs.

[0045] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A type of anti-detachment bimetallic cylinder liner, comprising an outer metal sheath (1), an inner metal bushing (2), and a retaining ring (3), characterized in that: The inner metal bushing (2) is inserted into the inside of the outer metal sheath (1). An annular groove (11) adapted to the retaining ring (3) is provided at one end between the outer metal sheath (1) and the inner metal bushing (2). The retaining ring (3) is detachably installed in the annular groove (11). The outer metal sheath (1) has multiple annularly distributed locking grooves (12) on the inner wall of the annular groove (11). Multiple annularly distributed locking pins (31) are slidably installed on the outer circumference of the retaining ring (3). An annular cavity is opened inside the retaining ring (3). Multiple annularly distributed screws (32) are rotatably installed inside the annular cavity. A connecting plate (33) is threaded onto the screws (32). The locking pins (31) are fixedly connected to one side of the connecting plate (33). A driving component (34) is provided on one of the screws (32). An annular slide rail (35) is fixedly connected on the inner circumference of the annular cavity. A rotatable bevel gear ring (36) is slidably sleeved on the annular slide rail (35). A bevel gear (37) that meshes with the bevel gear ring (36) is fixedly connected to each screw (32).

2. The anti-detachment bimetallic cylinder liner according to claim 1, characterized in that: A guide positioning block (38) is provided on one side of the outer circumference of the retaining ring (3), and a guide positioning groove (13) adapted to the guide positioning block (38) is provided on one side of the inner wall of the annular groove (11) of the outer metal sheath (1).

3. The anti-detachment bimetallic cylinder liner according to claim 1, characterized in that: A rubber pad (14) abuts against the retaining ring (3) and the annular groove (11).

4. The anti-detachment bimetallic cylinder liner according to claim 1, characterized in that: The drive component (34) includes a worm (341) rotatably mounted in an annular cavity, a nut (342) fixedly connected to the end of the worm (341), and a worm wheel (343) fixedly connected to the nut (32), wherein the worm (341) meshes with the worm wheel (343).

5. The anti-detachment bimetallic cylinder liner according to claim 4, characterized in that: A groove is provided on one end face of the retaining ring (3), and the nut (342) is placed in the groove.

6. The anti-detachment bimetallic cylinder liner according to claim 5, characterized in that: A cover plate (39) is provided at the opening of the groove.

7. The anti-detachment bimetallic cylinder liner according to claim 1, characterized in that: A guide rod (310) is fixedly connected to one side of each screw (32) in the annular cavity, and the connecting plate (33) is slidably sleeved on the guide rod (310).

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