CN221097294U

CN221097294U - Piston combined structure for nitrogen balance oil cylinder

Info

Publication number: CN221097294U
Application number: CN202323145401.XU
Authority: CN
Inventors: 盛崇义
Original assignee: Wuxi Huajin Hydraulic Equipment Co ltd
Current assignee: Wuxi Huajin Hydraulic Equipment Co ltd
Priority date: 2023-11-22
Filing date: 2023-11-22
Publication date: 2024-06-07
Anticipated expiration: 2033-11-22

Abstract

The utility model discloses a piston combined structure for a nitrogen balance oil cylinder, which belongs to the technical field of balance oil cylinder equipment and comprises a cylinder barrel, a piston rod and a piston sleeve, wherein the piston rod is in sliding connection with the cylinder barrel, the piston sleeve is detachably arranged at one end of the piston rod, which is positioned in the cylinder barrel, the piston sleeve is sleeved on the piston rod, one end of the piston rod, which is close to the piston sleeve, is sleeved with a fixed sleeve, the fixed sleeve is positioned at one side of the piston sleeve, which is far away from the piston rod, the inner side of the fixed sleeve is in sliding connection with a plurality of supporting columns, the supporting columns are radially arranged along the fixed sleeve, the supporting columns are circumferentially arranged in an array, a driving spring is arranged between the supporting columns and the fixed sleeve, a plurality of fixed grooves which are in one-to-one correspondence with the supporting columns are formed in the piston rod, and the fixed grooves are matched with the supporting columns. The piston combined structure for the nitrogen balance oil cylinder is inserted into the fixed groove to fix the fixed sleeve when the support column is aligned with the fixed groove, and compared with a limit bolt in threaded connection, the piston combined structure is very fast to install.

Description

Piston combined structure for nitrogen balance oil cylinder

Technical Field

The utility model belongs to the technical field of balance oil cylinder equipment, and particularly relates to a piston combination structure for a nitrogen balance oil cylinder.

Background

The nitrogen balance system of the machine tool machining center replaces the traditional main shaft balancing weight, reduces the resource loss of raw materials, reduces the total weight of the machine tool, reduces micro vibration generated by main shaft movement, and improves the product precision. The nitrogen balance oil cylinder has the following advantages: no external power equipment is needed, so that energy sources are saved; the device can adapt to rapid balance lifting and descending at high rotating speed, and has no noise; the defects of the traditional counterweight system are overcome, and the service lives of the screw rod and the motor are prolonged; the precision and the finish degree can be greatly improved in the processing process, and no micro-vibration exists; simple installation, convenient use and simple maintenance.

The nitrogen balance oil cylinder comprises a cylinder barrel, a cylinder cover, a piston rod, a piston, a nut and a plurality of sealing components, wherein the most easily-lost main driving element of the oil cylinder, namely the piston, is a detachable and replaceable piston sleeve, the piston of the oil cylinder is generally fixed at the end part of the piston rod through the nut, and the nut is adopted for fixing, so that the nut is required to be repeatedly screwed in the process of installation and detachment although the good fastening effect is achieved, the process is very troublesome and time-consuming, and the efficiency of detachment and replacement is affected.

Therefore, we propose a piston combination structure for a nitrogen balance cylinder to solve the above problems.

Disclosure of utility model

The utility model aims to solve the problem that in the prior art, the piston sleeve influences the efficiency of disassembly and replacement through nut fixation, and provides a piston combination structure for a nitrogen balance oil cylinder.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The utility model provides a piston integrated configuration for nitrogen balance cylinder, includes cylinder, piston rod, piston sleeve, piston rod and cylinder sliding connection, piston sleeve demountable installation is located the one end of cylinder at the piston rod, the piston sleeve cover is established on the piston rod, the one end cover that the piston rod is close to the piston sleeve is equipped with fixed cover, fixed cover is located one side that the piston sleeve kept away from the piston rod, fixed cover inboard sliding connection has a plurality of support posts, support the post along fixed cover radial setting, a plurality of support the post and set up along circumference array, be equipped with drive spring between support post and the fixed cover, offer a plurality of fixed slots with support post one-to-one on the piston rod, the fixed slot with support post looks adaptation, support post insert behind the fixed slot, fixed cover can't be along the piston rod axis removal, anticlockwise one side of fixed slot is the inclined plane and be connected with the piston rod outer peripheral face, fixed cover is close to one side of piston sleeve and is equipped with the tight mechanism that supports that is used for contradicting the piston sleeve to make it firm.

Preferably, a plurality of clamping grooves are formed in one side of the piston sleeve, the clamping grooves are arranged in an array along the circumference of the piston rod, the piston rod is located in the clamping grooves and fixedly connected with clamping blocks, and the clamping blocks are matched with the clamping grooves.

Preferably, the abutting mechanism comprises an abutting ring arranged on one side of the fixed sleeve, which is close to the piston sleeve, an annular groove is formed in the fixed sleeve, one end of the abutting ring extends into the annular groove and is in sliding connection with the fixed sleeve, the fixed sleeve is positioned in the annular groove and is fixedly connected with a reset spring, and the reset spring is fixedly connected with the abutting ring.

Preferably, one end of the supporting ring positioned in the annular groove is fixedly connected with a limiting ring, the limiting ring is positioned in the annular groove and is in sliding connection with the fixed sleeve, and the width of the limiting ring is larger than that of the supporting ring.

Preferably, a plurality of inclined slots are formed in the periphery of one end, close to the fixed sleeve, of the piston rod, the inclined slots are arranged in one-to-one correspondence with the supporting columns, and the inclined slots are arranged along the axis direction of the piston rod.

Preferably, a plurality of limit grooves are formed in the inner side of the fixing sleeve, one end of the supporting column extends into the limit groove and is connected with the supporting column in a sliding mode, and the limit groove is matched with the supporting column.

Preferably, a plurality of mounting grooves communicated with the limiting grooves are formed in the inner side of the fixing sleeve, the driving spring is located in the mounting grooves and fixedly connected with the fixing sleeve, the diameter of the mounting grooves is larger than that of the limiting grooves, one end of the supporting column extends into the mounting grooves and is fixedly connected with mounting blocks, and the mounting blocks are matched with the mounting grooves.

Preferably, the outer periphery of one end of the supporting column, which is close to the piston rod, is provided with a round angle, and the supporting column is in interference with the outer periphery of the piston rod.

In summary, the technical effects and advantages of the present utility model are:

1. this piston integrated configuration for nitrogen balance cylinder is with fixed cover is contradicted fixedly to the piston cover through supporting tight mechanism at the piston rod tip to insert the fixed inslot when supporting the post and aiming at the fixed slot and make fixed cover fixed, thereby make fixed cover can keep the fixed to the piston cover and make it can not loosen in the hydro-cylinder use, and fixed cover itself is because the telescopic link only is reciprocating motion, consequently can not produce relative rotation with the telescopic link when using and lead to the pine, the fixed effect of fixed cover has been ensured, and the mounting means of fixed cover is very swift in threaded connection's spacing bolt installation, dismantle also only need rotatory alright dismantlement of little range, need not to twist repeatedly and install and dismantle, save the time of changing, maintenance piston cover.

2. The abutting mechanism positioned on one side of the fixed sleeve is driven by the reset spring, the piston sleeve is abutted against the piston sleeve through the abutting ring when the fixed sleeve is abutted to the piston sleeve, the piston sleeve is firmly abutted to the piston rod, and along with the continuous movement of the fixed sleeve, the reset spring is compressed to enable the pressure applied to the piston sleeve to be larger, so that the stability of the piston sleeve is ensured, and the shaking of the piston sleeve during use is avoided as much as possible.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the structure of the fixing sleeve of the present utility model;

FIG. 3 is a schematic view of a piston rod according to the present utility model;

Fig. 4 is a side cross-sectional view of the present utility model.

In the figure: 1. a cylinder; 2. a piston rod; 3. a piston sleeve; 4. a fixed sleeve; 5. abutting the column; 6. a drive spring; 7. a fixing groove; 8. a clamping groove; 9. a clamping block; 10. a support ring; 11. an annular groove; 12. a return spring; 13. a limiting ring; 14. a chute; 15. a limit groove; 16. a mounting groove; 17. and (5) installing a block.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 4, a piston assembly structure for a nitrogen balance cylinder comprises a cylinder barrel 1, a piston rod 2 and a piston sleeve 3, wherein the piston rod 2 is in sliding connection with the cylinder barrel 1, and the piston sleeve 3 is detachably arranged at one end of the piston rod 2 located in the cylinder barrel 1. The piston sleeve 3 is sleeved on the piston rod 2, a fixed sleeve 4 is sleeved at one end of the piston rod 2, which is close to the piston sleeve 3, and the fixed sleeve 4 is positioned at one side of the piston sleeve 3, which is far away from the piston rod 2.

It should be noted that, the diameter of one end of the piston rod 2 near the piston sleeve 3 is smaller than the diameter of the main rod of the piston rod 2, so that the piston sleeve 3 moves to a certain position to abut against the piston rod 2, and the piston sleeve 3 is driven by hydraulic oil and abuts against the piston rod 2 to push the piston rod 2 to extend when the oil cylinder is used. The piston sleeve 3 can be fixedly arranged on the piston rod 2 after the other side of the piston sleeve 3 is limited and fixed by the fixing sleeve 4. A plurality of draw-in grooves 8 have been seted up to piston sleeve 3 one side, and a plurality of draw-in grooves 8 set up along piston rod 2 circumference array, and piston rod 2 is located draw-in groove 8 internal fixation and has fixture block 9, fixture block 9 and draw-in groove 8 looks adaptation, and fixture block 9 card is gone into in the draw-in groove 8 when piston sleeve 3 and piston rod 2 laminating to avoid the piston to produce relative rotation with piston rod 2 when piston rod 2 removes, cause the loss of piston sleeve 3.

Referring to fig. 1 to 4, a plurality of support columns 5 are slidably connected to the inner side of the fixed sleeve 4, the support columns 5 are radially arranged along the fixed sleeve 4, the support columns 5 are circumferentially arranged in an array, a driving spring 6 is arranged between the support columns 5 and the fixed sleeve 4, and the driving spring 6 drives the support columns 5 to move towards the axis of the fixed sleeve 4. The outer periphery of one end of the supporting column 5, which is close to the piston rod 2, is provided with a round angle, so that friction force during collision is reduced, and the supporting column 5 collides with the outer periphery of the piston rod 2. The piston rod 2 is provided with a plurality of fixing grooves 7 which are in one-to-one correspondence with the supporting columns 5, the fixing grooves 7 are matched with the supporting columns 5, and the supporting columns 5 can be inserted into the fixing grooves 7 to connect the fixing sleeve 4 with the piston rod 2 in an aligned mode, so that the fixing sleeve 4 is fixed on the piston rod 2. After the support column 5 is inserted into the fixing groove 7, the fixing sleeve 4 cannot move along the axis of the piston rod 2, so that the fixing sleeve 4 can limit one side of the piston sleeve 3.

Specifically, a plurality of spacing grooves 15 have been seted up to fixed cover 4 inboard, and spacing groove 15 radially sets up along fixed cover 4, supports post 5 one end and stretches into spacing groove 15 in with support post 5 sliding connection, spacing groove 15 with support post 5 looks adaptation, spacing groove 15 carries out the spacing to support post 5, makes its radial removal along fixed cover 4.

More specifically, a plurality of mounting grooves 16 communicated with the limiting groove 15 are formed in the inner side of the fixed sleeve 4, the mounting grooves 16 are radially formed along the fixed sleeve 4, the driving spring 6 is located in the mounting grooves 16 and fixedly connected with the fixed sleeve 4, the diameter of the mounting grooves 16 is larger than that of the limiting groove 15, one end of the supporting column 5 stretches into the mounting grooves 16 and is fixedly connected with a mounting block 17, the mounting block 17 is matched with the mounting grooves 16, the mounting block 17 slides in the mounting grooves 16 and is abutted against the fixed sleeve 4 after the supporting column 5 stretches out outwards for a certain distance, and therefore the supporting column 5 is prevented from being separated from the limiting groove 15.

Referring to fig. 1 to 4, the counterclockwise side of the fixing groove 7 is an inclined plane and is connected with the outer circumferential surface of the piston rod 2, the fixing sleeve 4 rotates counterclockwise around the axis, and the supporting column 5 is abutted against the inclined plane of the fixing groove 7 and is extruded into the fixing sleeve 4, so that the supporting column 5 falls off from the fixing groove 7 after the fixing sleeve 4 rotates for a certain distance, and at the moment, the fixing sleeve 4 can be taken down from the piston rod 2, thereby being convenient to detach.

Further, a plurality of chute 14 have been seted up to the one end periphery that piston rod 2 is close to fixed cover 4, a plurality of chute 14 and support post 5 one-to-one setting, chute 14 sets up along piston rod 2 axis direction, support post 5 and piston rod 2 periphery conflict when being located chute 14 and moving towards piston cover 3 along piston rod 2, make support post 5 withdraw in the spacing groove 15, be convenient for support post 5 and pop out after aiming at mounting groove 16, the while is convenient with fixed cover 4 cover on piston rod 2, avoid support post 5 and piston rod 2 interference and lead to fixed cover 4 unable to overlap.

Referring to fig. 1 to 4, a pressing mechanism for pressing the piston sleeve 3 firmly is provided on a side of the fixing sleeve 4 close to the piston sleeve 3.

Specifically, the propping mechanism comprises a propping ring 10 arranged on one side of the fixed sleeve 4, which is close to the piston sleeve 3, wherein the propping ring 10 and the fixed sleeve 4 are coaxially arranged, an annular groove 11 is formed in the fixed sleeve 4, one end of the propping ring 10 stretches into the annular groove 11 and is in sliding connection with the fixed sleeve 4, the fixed sleeve 4 is fixedly connected with a reset spring 12 in the annular groove 11, the reset spring 12 is fixedly connected with the propping ring 10, and the reset spring 12 is compressed when the propping ring 10 moves towards the annular groove 11, so that the propping ring 10 can be tightly attached to the piston sleeve 3 and provide pressure for the piston sleeve 3, the piston sleeve 3 is tightly attached to the piston rod 2, and the shaking of the piston sleeve 3 when the piston rod 2 moves reciprocally is avoided.

Further, one end of the supporting ring 10 located in the annular groove 11 is fixedly connected with a limiting ring 13, the limiting ring 13 is located in the annular groove 11 and is in sliding connection with the fixed sleeve 4, the width of the limiting ring 13 is larger than that of the supporting ring 10, and the limiting ring 13 abuts against the fixed sleeve 4 after the supporting ring 10 extends outwards for a certain distance, so that the supporting ring 10 cannot excessively extend out of the annular groove 11 and be separated from the annular groove 11.

Working principle: the piston sleeve 3 is sleeved on the piston rod 2 and is in abutting fit with the piston rod 2, the clamping block 9 is clamped into the clamping groove 8 to limit the piston sleeve 3, then the fixing sleeve 4 is sleeved on the piston rod 2 along the axis direction of the piston rod 2, the abutting column 5 needs to be noticed to be aligned with the chute 14 in the sleeving process, the abutting column 5 is abutted against the outer wall of the piston rod 2 to be pressed into the limiting groove 15, when the fixing sleeve 4 moves to be close to the piston sleeve 3, the abutting ring 10 abuts against the piston sleeve 3 and compresses the reset spring 12 along with the continuous movement of the fixing sleeve 4, the reset spring 12 provides elasticity for the abutting ring 10 to enable the piston sleeve 3 to tightly abut against the piston rod 2, the fixing sleeve 4 is rotated for a certain angle, the abutting column 5 is inserted into the fixing groove 7 when being aligned with the fixing groove 7, the fixing sleeve 4 is fixedly mounted on the piston rod 2, and the fixing of the piston sleeve 3 is kept, when the fixing sleeve 4 needs to be dismounted, only a certain angle is needed, the abutting column 5 is abutted against the inclined surface of the fixing groove 7 to be pressed into the limiting groove 15 again, and the abutting column 5 is separated from the fixing groove 7, and the fixing sleeve 4 is conveniently taken down.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a piston integrated configuration for nitrogen balance cylinder, includes cylinder (1), piston rod (2), piston sleeve (3), piston rod (2) and cylinder (1) sliding connection, piston sleeve (3) demountable installation is located the one end of cylinder (1) at piston rod (2), characterized in that, piston sleeve (3) cover is established on piston rod (2), one end cover that piston rod (2) is close to piston sleeve (3) is equipped with fixed cover (4), fixed cover (4) are located one side that piston sleeve (3) kept away from piston rod (2), fixed cover (4) inboard sliding connection has a plurality of support post (5), support post (5) along fixed cover (4) radial setting, a plurality of support post (5) are along circumference array setting, be equipped with drive spring (6) between support post (5) and the fixed cover (4), set up a plurality of fixed slots (7) that support post (5) one-to-one correspondence on piston rod (2), support post (5) insert fixed slot (7) one side, fixed post (2) can's axis and be unable to move anticlockwise one side of piston rod (2), one side of the fixed sleeve (4) close to the piston sleeve (3) is provided with a propping mechanism for propping against the piston sleeve (3) to enable the piston sleeve to be stable.

2. The piston combination structure for the nitrogen balance cylinder according to claim 1, wherein a plurality of clamping grooves (8) are formed in one side of the piston sleeve (3), the clamping grooves (8) are arranged along the circumferential array of the piston rod (2), the piston rod (2) is fixedly connected with clamping blocks (9) in the clamping grooves (8), and the clamping blocks (9) are matched with the clamping grooves (8); the fixing groove (7) is matched with the supporting column (5).

3. The piston combination structure for the nitrogen balance oil cylinder according to claim 1, wherein the abutting mechanism comprises an abutting ring (10) arranged on one side of the fixed sleeve (4) close to the piston sleeve (3), an annular groove (11) is formed in the fixed sleeve (4), one end of the abutting ring (10) stretches into the annular groove (11) to be in sliding connection with the fixed sleeve (4), a reset spring (12) is fixedly connected in the annular groove (11) of the fixed sleeve (4), and the reset spring (12) is fixedly connected with the abutting ring (10).

4. The piston combination structure for the nitrogen balance cylinder according to claim 3, wherein one end of the supporting ring (10) located in the annular groove (11) is fixedly connected with a limiting ring (13), the limiting ring (13) is located in the annular groove (11) and is in sliding connection with the fixing sleeve (4), and the width of the limiting ring (13) is larger than that of the supporting ring (10).

5. The piston combination structure for the nitrogen balance cylinder according to claim 1, wherein a plurality of inclined grooves (14) are formed in the periphery of one end, close to the fixed sleeve (4), of the piston rod (2), the inclined grooves (14) are arranged in one-to-one correspondence with the supporting columns (5), and the inclined grooves (14) are arranged along the axis direction of the piston rod (2).

6. The piston combination structure for the nitrogen balance cylinder according to claim 1, wherein a plurality of limit grooves (15) are formed in the inner side of the fixing sleeve (4), one end of the supporting column (5) extends into the limit groove (15) and is in sliding connection with the supporting column (5), and the limit groove (15) is matched with the supporting column (5).

7. The piston combination structure for the nitrogen balance cylinder according to claim 6, wherein a plurality of mounting grooves (16) communicated with the limiting grooves (15) are formed in the inner side of the fixing sleeve (4), the driving spring (6) is located in the mounting grooves (16) and fixedly connected with the fixing sleeve (4), the diameter of the mounting grooves (16) is larger than that of the limiting grooves (15), one end of the supporting column (5) stretches into the mounting grooves (16) and is fixedly connected with a mounting block (17), and the mounting block (17) is matched with the mounting grooves (16).

8. The piston assembly structure for the nitrogen balance cylinder according to claim 7, wherein a round corner is arranged on the periphery of one end, close to the piston rod (2), of the supporting column (5), and the supporting column (5) is abutted against the periphery of the piston rod (2).