CN214036340U - Hydraulic cylinder with adjustable limiting function - Google Patents
Hydraulic cylinder with adjustable limiting function Download PDFInfo
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- CN214036340U CN214036340U CN202023109479.2U CN202023109479U CN214036340U CN 214036340 U CN214036340 U CN 214036340U CN 202023109479 U CN202023109479 U CN 202023109479U CN 214036340 U CN214036340 U CN 214036340U
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Abstract
The utility model relates to a pneumatic cylinder technical field especially relates to a hydraulic cylinder with adjustable limit function. The hydraulic push rod stroke adjusting device comprises a hydraulic push rod, wherein a through groove is arranged in the middle of the hydraulic push rod in a through mode, a limiting screw is arranged inside the through groove, a limiting sleeve is fixedly arranged at the middle position of the top of a base, the upper portion of the limiting sleeve is connected inside the through groove in a sliding mode, a key groove is arranged inside the limiting sleeve, a nut is connected inside the key groove in a sliding mode, the limiting screw is connected to the nut in a threaded mode in a penetrating mode, the nut can be driven to move up and down when the limiting screw is rotated, when the nut moves to the position of a limiting ring, the limiting ring clamps the nut, the hydraulic push rod stretches out to the maximum stroke, and the stroke of the hydraulic push rod is adjusted by adjusting the distance between the nut and the limiting ring; the process of hydraulic push rod limiting and stroke adjusting can be realized without a hydraulic electromagnetic valve and an independent hydraulic limiting system.
Description
Technical Field
The utility model relates to a pneumatic cylinder technical field especially relates to a hydraulic cylinder with adjustable limit function.
Background
The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems.
The existing hydraulic cylinder does not have the function of limiting, the flow direction and the flow speed of hydraulic oil are controlled by means of an electromagnetic valve to control the stroke of a hydraulic push rod, a hydraulic electromagnetic control system is complex, the failure rate is high, and the stroke limiting control precision is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the technical deficiency exists is directed against, a hydraulic cylinder with adjustable limiting function is provided, including the hydraulic push rod middle part link up and is provided with the through groove, stop screw sets up inside the through groove, stop sleeve fixes and sets up at base top intermediate position, stop sleeve top sliding connection is inside the through groove, stop sleeve is inside to be provided with the keyway, the sliding connection has the nut inside the keyway, stop screw runs through threaded connection on the nut, can drive the nut up-and-down motion when rotating upper stop screw, when the nut moves to the spacing ring position, the spacing ring blocks the nut owner, and hydraulic push rod stretches out the maximum stroke, through the interval between adjusting nut and the spacing ring, thereby realizes adjusting the stroke of hydraulic push rod; the process of hydraulic push rod limiting and stroke adjusting can be realized without a hydraulic electromagnetic valve and an independent hydraulic limiting system.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: comprises a hydraulic cylinder body, a piston and a hydraulic push rod; the bottom of the hydraulic cylinder body is provided with a base; a gland is arranged at the top of the hydraulic cylinder body; the hydraulic push rod is arranged in the middle of the gland in a penetrating manner; the piston is connected inside the hydraulic cylinder body in a sliding mode; the piston is fixedly arranged below the hydraulic push rod; a limiting sleeve is arranged below the inner part of the hydraulic cylinder body; and a limiting screw is arranged above the limiting sleeve.
Further optimizing the technical scheme, the middle part of the hydraulic push rod is provided with a through groove in a penetrating way; the limiting screw is arranged inside the through groove; a partition table is arranged above the through groove; a boss is arranged at the top of the limiting screw rod; a baffle plate is arranged below the boss; the partition table is clamped between the boss and the baffle; the top of the boss is provided with a hexagonal groove.
Further optimizing the technical scheme, the limiting sleeve is fixedly arranged in the middle of the top of the base; and the upper part of the limiting sleeve is connected inside the through groove in a sliding manner and is sealed by the sealing element and the through groove.
Further optimizing the technical scheme, the top of the limit sleeve is provided with a limit ring; and the lower part of the limiting screw penetrates through the limiting ring and is arranged inside the limiting sleeve.
Further optimizing the technical scheme, a key groove is formed in the limiting sleeve; a nut is connected inside the key groove in a sliding manner; the limiting screw penetrates through the nut in a threaded connection mode.
Further optimizing the technical scheme, the inner diameter of the limiting ring is larger than the outer diameter of the limiting screw; the inner diameter of the limiting ring is smaller than the outer diameter of the nut.
Further optimizing the technical scheme, a through hole is formed in the base below the key groove; the key groove is communicated with the through hole.
Compared with the prior art, the utility model has the advantages of it is following:
1. when the upper limiting screw rod is rotated, the nut can be driven to move up and down, when the nut moves to the position of the limiting ring, the limiting ring clamps the nut, and the hydraulic push rod extends to the maximum stroke.
2. The stroke of the hydraulic push rod is adjusted by adjusting the distance between the nut and the limiting ring.
3. The process of hydraulic push rod limiting and stroke adjusting can be achieved without the aid of a hydraulic electromagnetic valve and an independent hydraulic limiting system, the failure rate is low, and stroke limiting adjustment is accurate.
Drawings
Fig. 1 is a three-dimensional structure diagram of a hydraulic oil cylinder with an adjustable limiting function.
FIG. 2 is a partial sectional view of a mounting structure above a hydraulic push rod of a hydraulic cylinder with an adjustable limiting function.
FIG. 3 is a partial sectional view of a mounting structure below a hydraulic push rod of a hydraulic cylinder with an adjustable limiting function.
In the figure: 1. a hydraulic cylinder block; 2. a piston; 3. a hydraulic push rod; 301. a through groove; 302. separating the platform; 4. a base; 401. a through hole; 5. a gland; 6. a limiting sleeve; 601. a limiting ring; 602. a keyway; 7. a limit screw; 701. a boss; 702. a baffle plate; 703. a hexagonal groove; 8. and a nut.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The first embodiment is as follows: referring to fig. 1-3, a hydraulic cylinder with adjustable limiting function is characterized in that: comprises a hydraulic cylinder body 1, a piston 2 and a hydraulic push rod 3; the bottom of the hydraulic cylinder body 1 is provided with a base 4; the top of the hydraulic cylinder body 1 is provided with a gland 5; the hydraulic push rod 3 is arranged in the middle of the gland 5 in a penetrating manner; the piston 2 is connected inside the hydraulic cylinder body 1 in a sliding manner; the piston 2 is fixedly arranged below the hydraulic push rod 3; a limiting sleeve 6 is arranged below the inner part of the hydraulic cylinder body 1; and a limiting screw 7 is arranged above the limiting sleeve 6.
Preferably, the middle part of the hydraulic push rod 3 is provided with a through groove 301 in a penetrating way; the limiting screw 7 is arranged inside the through groove 301; a partition table 302 is arranged above the through groove 301; a boss 701 is arranged at the top of the limiting screw 7; a baffle 702 is arranged below the boss 701; the partition 302 is clamped between the boss 701 and the baffle 702; the top of the boss 701 is provided with a hexagonal groove 703.
Preferably, the limiting sleeve 6 is fixedly arranged in the middle of the top of the base 4; the upper part of the limiting sleeve 6 is connected inside the through groove 301 in a sliding mode, and is sealed with the through groove 301 through a sealing element.
Preferably, the top of the limit sleeve 6 is provided with a limit ring 601; the lower part of the limit screw 7 penetrates through the limit ring 601 and then is arranged inside the limit sleeve 6.
Preferably, a key groove 602 is arranged inside the limit sleeve 6; a nut 8 is connected inside the key groove 602 in a sliding manner; the limiting screw 7 is connected to the nut 8 through threads.
Preferably, the inner diameter of the limiting ring 601 is larger than the outer diameter of the limiting screw 7; the inner diameter of the limiting ring 601 is smaller than the outer diameter of the nut 8.
Preferably, a through hole 401 is formed in the base 4 below the key groove 602; the key groove 602 communicates with the through hole 401.
The working principle is that when the stroke of the hydraulic push rod 3 is adjusted, as shown in fig. 1-3, the middle of the hydraulic push rod 3 is provided with a through groove 301 in a penetrating manner, the limit screw 7 is arranged inside the through groove 301, the partition table 302 is arranged above the through groove 301, the top of the limit screw 7 is provided with a boss 701, a baffle 702 is arranged below the boss 701, the partition table 302 is clamped between the boss 701 and the baffle 702, the top of the boss 701 is provided with a hexagonal groove 703, the limit screw 7 is clamped on the partition table 302 through the boss 701 and the baffle 702, and the limit screw 7 can only rotate and cannot move up and down inside the through groove 301.
When oil is supplied to the lower part of the piston 2, the piston 2 and the hydraulic push rod 3 move upwards to drive the limit screw 7 and the nut 8 to move upwards together, the limit sleeve 6 is fixedly arranged at the middle position of the top of the base 4, the upper part of the limit sleeve 6 is slidably connected inside the through groove 301 and sealed through the sealing element and the through groove 301, and the limit sleeve 6 slides in the through groove 301 of the hydraulic push rod 3 in the process.
When the nut 8 is lifted to the position of the nut 8, the limiting ring 601 blocks the nut 8, so that the hydraulic push rod 3 is blocked, and the hydraulic push rod 3 extends out for the maximum stroke.
The internal diameter of the limiting ring 601 is larger than the external diameter of the limiting screw 7, the internal diameter of the limiting ring 601 is smaller than the external diameter of the nut 8, a through hole 401 is formed in the base 4 below the key groove 602, the key groove 602 is communicated with the through hole 401, and the internal gas of the through groove 301 and the key groove 602 can be guaranteed to enter and be discharged from the position of the through hole 401 in the lifting process of the hydraulic push rod 3.
The stroke of the hydraulic push rod 3 is adjusted by adjusting the distance between the nut 8 and the limiting ring 601. The process of limiting the hydraulic push rod 3 and adjusting the stroke can be achieved without the aid of a hydraulic electromagnetic valve and an independent hydraulic limiting system, the failure rate is low, and the stroke limiting adjustment is accurate.
The utility model discloses a control mode comes automatic control through the controller, and the control circuit of controller can realize through the simple programming of technical staff in this field, belongs to the common general knowledge in this field, and the utility model discloses mainly be used for protecting mechanical device, so the utility model discloses no longer explain control mode and circuit connection in detail.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (7)
1. The utility model provides a hydraulic cylinder with adjustable limit function which characterized in that: comprises a hydraulic cylinder body (1), a piston (2) and a hydraulic push rod (3); the bottom of the hydraulic cylinder body (1) is provided with a base (4); a gland (5) is arranged at the top of the hydraulic cylinder body (1); the hydraulic push rod (3) is arranged in the middle of the gland (5) in a penetrating manner; the piston (2) is connected inside the hydraulic cylinder body (1) in a sliding manner; the piston (2) is fixedly arranged below the hydraulic push rod (3); a limiting sleeve (6) is arranged below the inner part of the hydraulic cylinder body (1); and a limiting screw (7) is arranged above the limiting sleeve (6).
2. The hydraulic oil cylinder with the adjustable limiting function as claimed in claim 1, wherein: a through groove (301) is arranged in the middle of the hydraulic push rod (3) in a penetrating manner; the limiting screw (7) is arranged inside the through groove (301); a partition table (302) is arranged above the through groove (301); a boss (701) is arranged at the top of the limiting screw rod (7); a baffle (702) is arranged below the boss (701); the partition table (302) is clamped between the boss (701) and the baffle (702); the top of the boss (701) is provided with a hexagonal groove (703).
3. The hydraulic oil cylinder with the adjustable limiting function as claimed in claim 2, characterized in that: the limiting sleeve (6) is fixedly arranged in the middle of the top of the base (4); and the upper part of the limiting sleeve (6) is connected inside the through groove (301) in a sliding manner and is sealed by the sealing element and the through groove (301).
4. The hydraulic oil cylinder with the adjustable limiting function as claimed in claim 1, wherein: the top of the limiting sleeve (6) is provided with a limiting ring (601); the lower part of the limit screw (7) penetrates through the limit ring (601) and then is arranged inside the limit sleeve (6).
5. The hydraulic oil cylinder with the adjustable limiting function as claimed in claim 4, wherein: a key groove (602) is formed in the limiting sleeve (6); a nut (8) is connected inside the key groove (602) in a sliding manner; the limiting screw rod (7) is connected to the nut (8) in a penetrating mode through threads.
6. The hydraulic oil cylinder with the adjustable limiting function as claimed in claim 5, wherein: the inner diameter of the limiting ring (601) is larger than the outer diameter of the limiting screw (7); the inner diameter of the limiting ring (601) is smaller than the outer diameter of the nut (8).
7. The hydraulic oil cylinder with the adjustable limiting function as claimed in claim 5, wherein: a through hole (401) is formed in the base (4) below the key groove (602); the key groove (602) is communicated with the through hole (401).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023109479.2U CN214036340U (en) | 2020-12-22 | 2020-12-22 | Hydraulic cylinder with adjustable limiting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023109479.2U CN214036340U (en) | 2020-12-22 | 2020-12-22 | Hydraulic cylinder with adjustable limiting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214036340U true CN214036340U (en) | 2021-08-24 |
Family
ID=77340321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023109479.2U Active CN214036340U (en) | 2020-12-22 | 2020-12-22 | Hydraulic cylinder with adjustable limiting function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214036340U (en) |
-
2020
- 2020-12-22 CN CN202023109479.2U patent/CN214036340U/en active Active
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