CN215659649U - Hydraulic jack cylinder inner wall polishing device - Google Patents

Abstract

The utility model relates to a polishing device for the inner wall of a cylinder of a hydraulic jack, which comprises a machine tool, at least 2 supporting devices and a grinding device. The lathe includes the frame, and first chuck is located to the one end of frame, and other end sliding connection has the second chuck. At least 3 supporting devices are slidably connected to the base and are positioned between the first chuck and the second chuck. Grinding device rotates to be connected in one of them strutting arrangement, and grinding device one end links to each other with the second chuck, and in the cylinder was worn to locate by the other end, the cylinder rotated to be connected in surplus strutting arrangement, and the tip links to each other with first chuck. First chuck and second chuck all are suitable for rotary motion, drive cylinder and grinding device differential rotation respectively, and grinding device polishes the cylinder inner wall. The utility model is based on the existing machine tool for reconstruction, and has simple structure and low reconstruction cost.

Description

Hydraulic jack cylinder inner wall polishing device

Technical Field

The utility model relates to the technical field of surface treatment, in particular to a polishing device for an inner wall of a cylinder of a hydraulic jack.

Background

The hydraulic jack is used as a main component of power equipment, generally takes hydraulic oil, emulsion or aqueous medium as a power transmission medium, bears hundreds of atmospheric pressures and even more, and therefore the requirement on the sealing performance of the jack is high. In addition, the good inner wall finish affects the service life of the seal, and the inner wall of the jack usually needs to be subjected to inner wall corrosion prevention treatment, including plating, oxidation, phosphating, spraying and other treatments, which changes the surface finish of the inner wall of the jack cylinder, so that the inner wall of the jack cylinder needs to be subjected to surface treatment, and generally, the thickness of a protective layer of most of the surface treatment is tens of micrometers to hundreds of micrometers, so that a polishing process is often adopted.

At present, when the inner wall of the cylinder barrel is polished, a set of polishing device needs to be independently configured, the structure is complex, the manufacturing cost is high, the polishing device is influenced by the manufacturing precision, the polishing precision of the inner wall of the cylinder barrel is also influenced, and the sealing requirement of the inner wall of the cylinder barrel of the jack cannot be met.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In view of the defects and shortcomings of the prior art, the utility model provides a hydraulic jack cylinder inner wall polishing device which is modified based on the existing machine tool, improves the precision of the polishing device, and solves the technical problems of complex structure, high manufacturing cost and low grinding precision of the polishing device in the prior art.

(II) technical scheme

In order to achieve the aim, the utility model provides a polishing device for the inner wall of a cylinder barrel of a hydraulic jack, which has the following specific technical scheme:

a hydraulic jack cylinder inner wall burnishing device includes:

a machine tool comprising a base;

one end of the machine base is provided with a first chuck, and the other end of the machine base is connected with a second chuck in a sliding manner;

at least 3 supporting devices which are connected on the base in a sliding way and are positioned between the first chuck and the second chuck;

the polishing device is rotationally connected in one of the supporting devices, one end of the polishing device is connected with the second chuck, and the other end of the polishing device penetrates through the cylinder barrel;

the cylinder barrel is rotationally connected in the rest supporting device, and one end of the cylinder barrel, which is far away from the polishing device, is connected with the first chuck;

the first chuck is suitable for driving the cylinder barrel to rotate, and the second chuck is suitable for driving the grinding device to move and/or rotate.

Further, the polishing device comprises a polishing rod and a polishing wheel;

the polishing rod is rotatably connected in the supporting device, one end of the polishing rod is connected with the second chuck, and the other end of the polishing rod is connected with the polishing wheel.

Further, the polishing wheel is a cashmere wheel.

Further, the cylinder barrel is filled with polishing paste or polishing liquid, and the polishing paste or the polishing liquid is used for lubricating the polishing wheel.

Furthermore, the device also comprises a baffle ring;

the retaining ring is sleeved on the periphery of the polished rod and detachably connected with the end part of the cylinder barrel, and is used for preventing polishing paste or polishing liquid in the cylinder barrel from overflowing.

Further, a round hole is formed in the baffle ring, and the baffle ring is slidably sleeved on the periphery of the polished rod through the round hole;

the diameter of the round hole is equal to the outer diameter of the polished rod.

Further, the supporting device comprises a bracket and a plurality of locking devices;

the center of the bracket is provided with a through hole, and the cylinder barrel/the polishing rod are arranged in the through hole;

the plurality of locking devices are arranged on the bracket and are uniformly arranged along the circumferential direction of the through insertion holes;

the ends of the locking devices close to the through-going bores are clamped to the outer circumference of the cylinder barrel/polishing rod for axial and/or radial fixing of the cylinder barrel/polishing rod.

Further, the locking device comprises a locking block and a screw rod;

the locking block is arranged on the bracket, the screw is connected in the locking block in a threaded manner, and the end part of the screw points to the through hole;

and a bearing is arranged at the end part of the screw rod close to the through hole, and the screw rod is screwed to enable the outer ring of the bearing to be abutted against the periphery of the cylinder barrel/polishing rod.

Further, the support comprises an upper support and a lower support;

the lower bracket is slidably arranged on the machine base, the upper bracket is arranged above the lower bracket, one end of the upper bracket is hinged with the lower bracket, and the other end of the upper bracket is detachably connected with the lower bracket.

Further, the first chuck and the second chuck are both three-jaw chucks;

the first chuck is internally connected with a connecting shaft in a clamping manner, and the connecting shaft is connected with the end part of the cylinder barrel through a universal joint.

(III) advantageous effects

The polishing device for the inner wall of the cylinder barrel of the hydraulic jack effectively overcomes the defects in the prior art.

According to the utility model, based on the existing machine tool, the first chuck is arranged at one end of the machine base, the second chuck is connected to the other end of the machine base in a sliding manner, and the first chuck and the second chuck are both suitable for rotating motion. Furthermore, at least 3 supporting devices are arranged between the first chuck and the second chuck, the polishing device is rotatably connected in one of the supporting devices, the end part of the polishing device is connected with the second chuck, and the second chuck can drive the polishing device to rotate during operation. The cylinder sleeve is rotatably connected in the residual supporting device, the end part of the cylinder barrel is connected with a first chuck, and the first chuck is suitable for driving the cylinder barrel to rotate or move. When polishing, grinding device wears to locate in the cylinder, and first chuck and second chuck differential rotate, and then drive cylinder and grinding device differential rotation, and the second chuck drives grinding device axial feed simultaneously, polishes the cylinder inner wall. According to the utility model, the supporting device, the first chuck and the second chuck are arranged on the base and are positioned on the same axis, so that the coaxiality of the polishing device and the cylinder barrel is ensured, the polishing precision is further ensured, and the sealing requirement of the inner wall of the cylinder barrel is met. The utility model is improved based on the existing machine tool, and has simple structure and low manufacturing cost.

[ description of the drawings ]

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application, and in which:

FIG. 1 is a schematic structural diagram of a polishing device for the inner wall of a cylinder of a hydraulic jack in an embodiment;

FIG. 2 is an isometric view of a hydraulic jack cylinder inner wall burnishing apparatus according to an embodiment;

FIG. 3 is a schematic diagram of a support device according to an embodiment;

FIG. 4 is a schematic diagram of a polishing device and a retainer ring according to an embodiment;

fig. 5 is a schematic structural diagram of a cylinder barrel in an embodiment.

[ description of reference ]

1. A machine tool; 110. a first chuck; 120. a second chuck; 130. a machine base; 140. a slide rail;

2. a connecting shaft; 3. a universal joint;

4. a support device;

410. a support; 411. an upper bracket; 412. a lower bracket;

420. a locking device; 421. a locking block; 422. a screw; 423. a bearing;

5. a cylinder barrel; 51. a circumferential groove;

6. a polishing device; 610. polishing the rod; 620. a polishing wheel;

7. and (4) a baffle ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the utility model. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the description of the present embodiment, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the scope of the present embodiment.

Referring to fig. 1 to 5, the present embodiment provides a polishing device for the inner wall of a cylinder 5 of a hydraulic jack, which is modified based on an existing machine tool 1. The machine tool 1 comprises a base 130, a first chuck 110 and a second chuck 120, wherein the base 130 is provided with a slide rail 140, and the extension direction of the base 130 is consistent with that of the slide rail 140. The first chuck 110 is disposed at one end of the base 130, the second chuck 120 is slidably connected to the slide rail 140 and can slide along the slide rail 140, and both the first chuck 110 and the second chuck 120 are suitable for rotating. The polishing apparatus provided by this embodiment further includes at least 3 supporting devices 4, and at least 3 supporting devices 4 are slidably disposed on the slide rail 140 at intervals, and are located between the first chuck 110 and the second chuck 120, and are located on the same axis as the first chuck 110 and the second chuck 120. By way of example, in the present embodiment, the number of the supporting devices 4 is preferably 3, the polishing device 6 is rotatably connected in one of the supporting devices 4, one end of the polishing device is connected to the second chuck 120, the other end of the polishing device is inserted into the cylinder 5, and the second chuck 120 is adapted to drive the polishing device 6 to rotate and move. The cylinder 5 is rotatably connected to the remaining two support means 4, and the end of the cylinder is connected to a first chuck 110, the first chuck 110 being adapted to rotate the cylinder 5. In this embodiment, the first chuck 110 and the second chuck 120 are both three-jaw chucks, wherein the first chuck 110 is further connected with a connecting shaft 2 in a clamping manner, and the connecting shaft 2 is connected with the cylinder 5 through a universal joint 3. The cylinder 5 passes through universal joint 3's connected mode with connecting axle 2, and very convenient to detach when changing cylinder 5, can avoid 5 repeated clamping of cylinder to lead to the problem of the inefficiency of polishing, has realized the quick replacement of cylinder 5, has improved the change efficiency of cylinder 5, and then has improved the efficiency of polishing, and the burnishing device that this embodiment provided improves based on current lathe 1, and the structure is fairly simple, and the transformation cost is lower.

During the specific use, install cylinder 5 and grinding device 6 on strutting arrangement 4 and lock, link to each other 5 tip of cylinder with first chuck 110, link to each other 6 tip of grinding device with second chuck 120, then control first chuck 110 and second chuck 120 and start, first chuck 110 and second chuck 120 drive cylinder 5 and grinding device 6 differential rotation respectively, control second chuck 120 simultaneously and move to the cylinder side along slide rail 140, in order to drive grinding device 6 and remove and insert cylinder 5, provide axial feed for grinding device 6, in order to polish 5 inner walls of cylinder. In this embodiment, the coaxial design of first chuck 110, strutting arrangement 4 and second chuck 120 has guaranteed 5 and grinding device 6's axiality of cylinder, can prevent that the eccentric wear from appearing in 5 inner wall inoxidizing coatings of cylinder, reduces the precision of polishing, influences sealed effect, also can avoid the inoxidizing coating to polish thickness inequality and lead to the barrier propterty to descend.

Specifically, referring to fig. 4, the polishing apparatus 6 includes a polished rod 610 and a polishing wheel 620, the polishing wheel 620 being detachably attached to an end of the polished rod 610. Preferably, a square hole is formed in the polishing wheel 620, a square shaft is correspondingly formed in the polishing rod 610, and the polishing wheel 620 is sleeved on the periphery of the square shaft of the polishing rod 610 through the square hole. The polishing rod 610 is rotatably connected in the supporting device 4, one end of the polishing rod 610, which is far away from the polishing wheel 620, is connected with the second chuck 120, and the polishing rod 610 and the polishing wheel 620 can be driven by the second chuck 120 to synchronously rotate so as to polish the inner wall of the cylinder 5.

Preferably, in the present embodiment, the polishing manner of the inner wall of the cylinder 5 is a wet polishing manner, correspondingly, the polishing wheel 620 is a cashmere wheel, and the cylinder 5 is filled with polishing paste or polishing liquid for lubricating and cooling the cashmere wheel during polishing, so as to prolong the service life of the cashmere wheel. As an example, the polishing paste in the present embodiment is preferably alumina, chromium oxide, or the like having a lubricating effect. The cashmere wheel can be used for polishing protective layers with thinner thickness, such as a permeable layer, a passivation layer and the like. In the embodiment, the cashmere wheel and the polishing paste or the polishing solution are used in cooperation to replace the traditional dry grinding modes such as a thousand-blade wheel and a grinding wheel, so that the situation that the dry grinding mode causes transitional grinding to leak out of the substrate and influence the protective performance of the protective layer can be avoided.

Further, the polishing device for the inner wall of the cylinder of the hydraulic jack in the embodiment further comprises a baffle ring 7, wherein the baffle ring 7 is detachably connected with the end part of the cylinder 5 and is used for preventing polishing paste or polishing liquid in the cylinder 5 from overflowing. Specifically, the retainer ring 7 is provided with a central hole having the same diameter as that of the polishing rod 610, and the retainer ring 7 is fitted around the outer circumference of the polishing rod 610 through the central hole and can slide along the polishing rod 610. The baffle ring 7 is connected with the end part of the cylinder barrel 5 in a magnetic attraction way or a bolt way and the like which are convenient to detach. By way of example, in the present embodiment, the stop ring 7 is connected to the cylinder 5 by a bolt, the end of the cylinder 5 is provided with a threaded hole, the stop ring 7 is correspondingly provided with a through hole, and the bolt passes through the through hole of the stop ring 7 and is screwed into the threaded hole of the cylinder 5, so as to achieve the detachable connection of the stop ring 7 and the cylinder 5. When the polishing device is used specifically, the second chuck 120 is controlled to move towards the direction close to the cylinder barrel 5, the polishing device 6 is driven to be inserted into the cylinder barrel 5, then the second chuck 120 is controlled to stop, the stop ring 7 is connected with the cylinder barrel 5 by manually screwing the bolt, and the cylinder barrel 5 is blocked, so that polishing paste or polishing liquid in the cylinder barrel 5 is prevented from being thrown out by the rotation of the cylinder barrel 5 in the polishing process.

Referring to fig. 3, the supporting device 4 in this embodiment includes a bracket 410 and a plurality of locking devices 420 disposed on the bracket 410. The bracket 410 is provided with through holes, a plurality of locking devices 420 are uniformly distributed on the periphery of the through holes, and the end parts of the locking devices 420 close to the through holes are clamped on the periphery of the cylinder 5 or the polishing rod 610 to axially and radially fix the cylinder 5 or the polishing rod 610. By way of example, the number of locking devices in this embodiment is preferably 3, and the angle between two adjacent locking devices is 120 °.

Preferably, referring to fig. 2 and 3, the bracket 410 in this embodiment is a split structure, and includes an upper bracket 411 and a lower bracket 412, wherein 2 locking devices 420 are symmetrically disposed on the lower bracket 412, the remaining one locking device 420 is disposed on the upper bracket 411, the lower bracket 412 is slidably connected to the slide rail 140 of the base 130, the upper bracket 411 is disposed above the lower bracket 412, one end of the upper bracket is hinged to the lower bracket 412, and the other end of the upper bracket is connected to the lower bracket 412 through a bolt.

Preferably, referring to fig. 3, the locking device 420 includes a locking block 421 and a screw 422, the locking block 421 is provided with a threaded hole, and the screw 422 is threadedly connected in the threaded hole and is arranged toward the insertion hole. The end of the screw 422 near the insertion hole is rotatably connected with a bearing 423, and the screw 422 is screwed so that the outer ring of the bearing 423 abuts against the outer periphery of the cylinder 5 or the polishing rod 610 to clamp the cylinder 5 or the polishing rod 610. Further, the outer periphery of the cylinder tube 5 is further provided with a circumferential groove 51, and the outer ring of the bearing 423 is slidably connected in the circumferential groove 51 to facilitate clamping of the cylinder tube 5. The locking device 420 of the embodiment can be suitable for clamping cylinder barrels 5 with different diameters, has a wide general range, and can meet the clamping requirements of the cylinder barrels 5 with different diameters.

During specific use, the cylinder barrel 5 is arranged in the penetrating hole of the supporting device 4 in a penetrating mode, the screw 422 is screwed, the bearing 423 is abutted to the periphery of the cylinder barrel 5 and clamped tightly, and therefore the cylinder barrel 5 is fixed axially and radially. Then, the grinding device 6 is inserted into the insertion hole of the supporting device 4, and the screw 422 is screwed to make the outer ring of the bearing 423 abut against and clamp the outer periphery of the polishing rod 610, so as to fix the polishing rod 610 axially and radially. In this embodiment, the coaxiality of the cylinder 5 or the grinding device 6 can be controlled by measuring the extension length of the screw 430, which is convenient for operation.

The aforesaid is the concrete structure of the hydraulic jack cylinder inner wall burnishing device that this embodiment provided, when polishing 5 inner walls of cylinder, drives the cylinder 5 rotation through first chuck 110, drives grinding device 6 rotation through second chuck 120 to control the translation of second chuck 120 and polish 5 inner walls of cylinder with driving 6 axial feed of grinding device. Specifically, the rotating speed of the second chuck 120 is controlled to be slightly higher than that of the first chuck 110, so that the rotating speed of the polishing device 6 is slightly higher than that of the cylinder 5, and the inner wall of the cylinder 5 can be prevented from being polished and damaged. The polishing device of the embodiment is formed by modifying the existing machine tool 1, and has a simpler structure and lower manufacturing cost.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the inventive concept within the technical scope of the present invention.

Claims (10)

1. The utility model provides a hydraulic jack cylinder inner wall burnishing device which characterized in that includes:

machine tool (1) comprising a machine bed (130);

one end of the base (130) is provided with a first chuck (110), and the other end of the base is connected with a second chuck (120) in a sliding manner;

at least 3 support means (4) slidably connected to said base (130) and located between said first chuck (110) and said second chuck (120);

the polishing device (6) is rotatably connected into one of the supporting devices (4), one end of the polishing device (6) is connected with the second chuck (120), and the other end of the polishing device (6) penetrates through the cylinder barrel (5);

the cylinder barrel (5) is rotatably connected into the rest of the supporting devices (4), and the end part, far away from the grinding device (6), of the cylinder barrel (5) is connected with the first chuck (110);

the first chuck (110) is suitable for driving the cylinder barrel (5) to rotate, and the second chuck (120) is suitable for driving the grinding device (6) to move and/or rotate.

2. The hydraulic jack cylinder inner wall polishing device according to claim 1, wherein the grinding device (6) comprises a polishing rod (610) and a polishing wheel (620);

the polishing rod (610) is rotatably connected in the supporting device (4), one end of the polishing rod is connected with the second chuck (120), and the other end of the polishing rod is connected with the polishing wheel (620).

3. The polishing device for the inner wall of the cylinder of the hydraulic jack as claimed in claim 2, wherein the polishing wheel (620) is a cashmere wheel.

4. The polishing device for the inner wall of the cylinder barrel of the hydraulic jack as claimed in claim 3, wherein the cylinder barrel (5) is further filled with polishing paste or polishing liquid, and the polishing paste or polishing liquid is used for lubricating the polishing wheel (620).

5. The hydraulic jack cylinder inner wall polishing device according to claim 4, further comprising a stopper ring (7);

the retaining ring (7) is sleeved on the periphery of the polishing rod (610) and detachably connected with the end part of the cylinder barrel (5) and used for preventing polishing paste or polishing liquid in the cylinder barrel (5) from overflowing.

6. The polishing device for the inner wall of the cylinder of the hydraulic jack as claimed in claim 5, wherein the baffle ring (7) is provided with a circular hole, and the baffle ring (7) is slidably sleeved on the periphery of the polishing rod (610) through the circular hole;

the diameter of the circular hole is equal to the outer diameter of the polished rod (610).

7. The hydraulic jack cylinder inner wall burnishing apparatus of claim 2, wherein the support means (4) comprises a bracket (410) and a plurality of locking means (420);

a penetrating hole is formed in the center of the support (410), and the cylinder (5)/the polished rod (610) penetrates through the penetrating hole;

the plurality of locking devices (420) are arranged on the bracket (410) and are uniformly arranged along the circumferential direction of the through insertion holes;

the ends of the locking devices (420) close to the through-insertion holes are clamped on the periphery of the cylinder (5)/the polished rod (610) for axially and/or radially fixing the cylinder (5)/the polished rod (610).

8. The hydraulic jack cylinder inner wall polishing device according to claim 7, wherein the locking device (420) comprises a locking block (421) and a screw (422);

the locking block (421) is arranged on the support (410), the screw rod (422) is connected in the locking block (421) in a threaded manner, and the end part of the screw rod points to the through insertion hole;

the end part of the screw rod (422) close to the through hole is rotatably connected with a bearing (423), and the screw rod (422) is screwed to enable the outer ring of the bearing (423) to be abutted against the periphery of the cylinder barrel (5)/the polished rod (610).

9. The hydraulic jack cylinder inner wall burnishing apparatus of claim 8, wherein the bracket comprises an upper bracket (411) and a lower bracket (412);

the lower support (412) is slidably arranged on the base (130), the upper support (411) is arranged above the lower support (412), one end of the upper support is hinged to the lower support (412), and the other end of the upper support is detachably connected with the lower support (412).

10. The hydraulic jack cylinder bore wall burnishing apparatus of claim 1, wherein the first chuck (110) and the second chuck (120) are both three-jaw chucks;

the connecting shaft (2) is connected in the first chuck (110) in a clamping mode, and the connecting shaft (2) is connected with the end portion of the cylinder barrel (5) through a universal joint (3).

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