CN213540917U - Hydraulic steel ball hinge type piston connecting structure - Google Patents
Hydraulic steel ball hinge type piston connecting structure Download PDFInfo
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- CN213540917U CN213540917U CN202022707734.7U CN202022707734U CN213540917U CN 213540917 U CN213540917 U CN 213540917U CN 202022707734 U CN202022707734 U CN 202022707734U CN 213540917 U CN213540917 U CN 213540917U
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Abstract
The utility model belongs to the technical field of the pneumatic cylinder, especially, a hydraulic steel ball hinge formula piston connection structure, the hydraulic cylinder comprises a cylinder, the one end fixedly connected with cylinder head of cylinder, the hydraulic pressure chamber has been seted up to the inside of cylinder, the connector has been seted up at the top of cylinder head, the connector with one side intercommunication in hydraulic pressure chamber, slidable mounting has the piston in the hydraulic pressure chamber, the oil groove has been seted up to the surface axial of piston, the outer fixed surface installation guide ring of piston, the guide ring with the inner wall sliding connection in hydraulic pressure chamber, the ball groove has been seted up to one side of piston, install the bulb in the ball groove, the fixed surface of bulb is connected with the piston rod. The utility model discloses simple structure: only need make simple modification in the design, can accomplish the transformation to current hydro-cylinder drawing, it is convenient to process simultaneously, need not use welding process, has reduced the deformation that generates heat, reduce cost, secondly assembly work is simple, and the structure is reliable, adopts the ball pivot to connect easy to install the maintenance very much.
Description
Technical Field
The utility model relates to a pneumatic cylinder technical field especially relates to a hydraulic pressure steel ball hinge formula piston connection structure.
Background
The hydraulic oil cylinder is a special machine widely used in the industries of excavators, piling machinery, large bridge construction equipment, metallurgy machinery, petrochemical industry and the like. The hydraulic machine is one of the important components of modern industrial equipment, and plays an important role of no replacement in each link of the modern industry. The performance of the hydraulic oil cylinder which is taken as a core component of the hydraulic machine directly determines the performance of the hydraulic machine, and has a significant influence on the development of modern industry.
In the prior art, the following connection modes are generally adopted between the piston and the piston rod: the threaded connection structure: the piston and the piston rod are connected by threads, which is the most common connection mode, usually the piston rod is provided with external threads, the piston is provided with internal threads with the same specification, and the piston is combined with a backstop screw, thread glue, a split pin, a backstop gasket and the like to prevent falling off, but if the threads are unreasonable, the piston is easy to pull and fall off; the clamping and the key connection are as follows: the connecting mode mainly aims at the condition that the rod diameter is larger and exceeds the range of standard nuts, the rod diameter is different, and the size and the thickness of the clamping key are different. The small piston rod is not suitable, and the key clamping groove can weaken the strength of the piston rod; welding: the oil cylinder is mainly used in oil cylinders with compact structures, and no extra size is used for installing a clamping key and a nut, and only the mode is used. Welding heat generation can cause deformation, influence material strength, increase process man-hour. In addition, in the above modes, under the condition of large coaxiality error of the cylinder barrel, the assembly is difficult; in addition, a long-stroke single-action plunger hydraulic cylinder does not have a piston or enlarge a guide gap, so that the abrasion of a guide ring at a guide sleeve is aggravated and the stability of a piston rod is weakened.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a hydraulic steel ball hinge type piston connecting structure.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a hydraulic steel ball hinge type piston connecting structure comprises a cylinder barrel, one end of the cylinder barrel is fixedly connected with a cylinder head, a hydraulic cavity is arranged inside the cylinder barrel, a connector is arranged at the top of the cylinder head and is communicated with one side of the hydraulic cavity, a piston is arranged in the hydraulic cavity in a sliding manner, an oil passing groove is axially formed in the surface of the piston, a guide ring is fixedly arranged on the outer surface of the piston, the guide ring is connected with the inner wall of the hydraulic cavity in a sliding way, one side of the piston is provided with a ball groove, a ball head is arranged in the ball groove, the surface of the ball head is fixedly connected with a piston rod, the surface of the piston is connected with a gland through a screw, the gland bush is established the surface of piston rod, sliding connection has the uide bushing on the one end inner wall in hydraulic pressure chamber, the one end of piston rod runs through the uide bushing extends to the outside of cylinder.
Preferably, the cylinder head and the cylinder barrel are integrally cast.
Preferably, a plurality of threaded holes are formed in one side of the piston and the surface of the gland, and the gland is fixed to one side of the piston through screws.
Preferably, the surface of the gland is provided with a through hole, and the piston rod penetrates through the through hole to enable the ball head to be embedded into the ball groove.
Preferably, the ball head is machined by turning one end of the piston rod.
Preferably, the gland can be made into an integral type or a split type according to actual conditions.
Compared with the prior art, the beneficial effects of the utility model are that: the bulb is formed by the mode processing of turning of the one end of piston rod, inserts the ball groove of piston one side through the bulb in, then uses the gland to cover to fasten with many high strength screws, the condition that drops basically can not appear, secondly this kind of structure can not weaken piston rod intensity, the deformation of generating heat that welded type connects also can not appear, processing is convenient, the assembly is convenient, especially under the not good condition of cylinder inner tube axiality, the assembly that this kind of structure can be fine. For a single-acting hydraulic cylinder, the clearance between the guide part on the plunger and the inner hole of the cylinder barrel is large; when the inner stroke of the cylinder barrel is long, the straightness of the cylinder barrel and the cylindricity of an inner hole are poor; the plunger is basically guided by the guide sleeve in the moving process, and the stability and the durability of the oil cylinder are seriously influenced because only the guide sleeve plays a role in guiding. If the connected piston is arranged at the tail end of the plunger, and a proper gap is formed between the ball head and the ball groove, the piston can rotate at a proper angle and can also move slightly in diameter. When the error of the straight line of the oil cylinder is large, the piston is in spherical hinge joint, so that the piston can rotate by a certain angle and can properly move, and the piston rod is prevented from being clamped and blocked, so that the piston can be well guided even under the condition that the straight line of the cylinder barrel is poor.
The utility model discloses simple structure: only need make simple modification in the design, can accomplish the transformation to current hydro-cylinder drawing, it is convenient to process simultaneously, need not use welding process, has reduced the deformation that generates heat, reduce cost, secondly assembly work is simple, and the structure is reliable, adopts the ball pivot to connect easy to install the maintenance very much.
Drawings
Fig. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic sectional view of the front view of the present invention;
fig. 3 is a schematic view of the connection structure of the present invention.
In the figure: 1. a cylinder barrel; 2. a cylinder head; 3. a connecting port; 4. a piston; 5. a guide ring; 6. a ball head; 7. a piston rod; 8. a gland; 9. a guide sleeve; 10. and (4) screws.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a hydraulic steel ball hinge type piston connecting structure comprises a cylinder barrel 1, a cylinder head 2 is welded at one end of the cylinder barrel 1, a hydraulic cavity is formed in the cylinder barrel 1, a connector 3 is formed in the top of the cylinder head 2, the connector 3 is communicated with one side of the hydraulic cavity, a piston 4 is slidably mounted in the hydraulic cavity, an oil passing groove is axially formed in the surface of the piston 4, a guide ring 5 is welded on the outer surface of the piston 4, the guide ring 5 is slidably connected with the inner wall of the hydraulic cavity, a ball groove is formed in one side of the piston, a ball head 6 is mounted in the ball groove, a piston rod 7 is welded on the surface of the ball head 6, a gland 8 is connected to the surface of the piston 4 through a screw 10, the gland 8 is sleeved on the surface of the piston rod 7, a guide sleeve 9 is slidably connected to the inner;
The working principle is as follows: the bulb 6 is formed by the mode processing of turning of the one end of piston rod 7, inserts the ball inslot of piston one side through bulb 6, then uses gland 8 to cover to fasten with many high strength screws 10, the condition that drops basically can not appear, secondly this kind of structure can not weaken piston rod 7 intensity, the deformation of generating heat that welded type connects also can not appear, processing is convenient, it is convenient to assemble, especially under the not good condition of 1 inner tube axiality of cylinder, the assembly that this kind of structure can be fine. For a single-acting hydraulic cylinder, the clearance between the guide part on the plunger and the inner hole of the cylinder barrel 1 is large; when the internal stroke of the cylinder barrel 1 is long, the straightness of the cylinder barrel 1 and the cylindricity of an inner hole are poor; the plunger is basically guided by the guide sleeve 9 in the moving process, and the stability and the durability of the oil cylinder are seriously influenced because only the guide sleeve 9 plays a role in guiding. If the connected piston is arranged at the tail end of the plunger, and a proper gap is formed between the ball head 6 and the ball groove, the piston 4 can rotate at a proper angle and can also move slightly in diameter. When the error of the straight line of hydro-cylinder is big, piston 4 is ball-hinged, so piston 4 can turned angle, the footpath also can be suitable drunkenness, even under the very poor condition of cylinder 1 straightness accuracy so that the dead condition of 7 chucking suffocating of preventing to appear, also can play fine guide effect to the plunger, the utility model discloses simple structure: only need make simple modification in the design, can accomplish the transformation to current hydro-cylinder drawing, it is convenient to process simultaneously, need not use welding process, has reduced the deformation that generates heat, reduce cost, secondly assembly work is simple, and the structure is reliable, adopts the ball pivot to connect easy to install the maintenance very much.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a hydraulic pressure steel ball hinge formula piston connection structure, includes cylinder (1), its characterized in that: one end of the cylinder barrel (1) is fixedly connected with a cylinder head (2), a hydraulic cavity is formed in the cylinder barrel (1), a connector (3) is formed in the top of the cylinder head (2), the connector (3) is communicated with one side of the hydraulic cavity, a piston (4) is slidably mounted in the hydraulic cavity, an oil groove is axially formed in the surface of the piston (4), a guide ring (5) is fixedly mounted on the outer surface of the piston (4), the guide ring (5) is slidably connected with the inner wall of the hydraulic cavity, a ball groove is formed in one side of the piston, a ball head (6) is mounted in the ball groove, a piston rod (7) is fixedly connected to the surface of the ball head (6), a gland (8) is connected to the surface of the piston (4) through a screw (10), the gland (8) is sleeved on the surface of the piston rod (7), and a guide sleeve (9) is slidably connected to the inner wall of one, one end of the piston rod (7) penetrates through the guide sleeve (9) and extends to the outside of the cylinder barrel (1).
2. The hydraulic steel ball hinge type piston connecting structure according to claim 1, wherein: the cylinder head (2) and the cylinder barrel (1) are integrally cast.
3. The hydraulic steel ball hinge type piston connecting structure according to claim 1, wherein: a plurality of threaded holes are formed in one side of the piston (4) and the surface of the gland (8), and the gland (8) is fixed to one side of the piston (4) through screws (10).
4. The hydraulic steel ball hinge type piston connecting structure according to claim 1, wherein: the surface of the gland (8) is provided with a through hole, and the piston rod (7) penetrates through the through hole to enable the ball head (6) to be embedded into the ball groove.
5. The hydraulic steel ball hinge type piston connecting structure according to claim 1, wherein: the ball head (6) is formed by machining one end of the piston rod (7) in a turning mode.
6. The hydraulic steel ball hinge type piston connecting structure according to claim 1, wherein: the gland (8) can be made into an integral type or a split type according to actual conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022707734.7U CN213540917U (en) | 2020-11-20 | 2020-11-20 | Hydraulic steel ball hinge type piston connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022707734.7U CN213540917U (en) | 2020-11-20 | 2020-11-20 | Hydraulic steel ball hinge type piston connecting structure |
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| Publication Number | Publication Date |
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| CN213540917U true CN213540917U (en) | 2021-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022707734.7U Active CN213540917U (en) | 2020-11-20 | 2020-11-20 | Hydraulic steel ball hinge type piston connecting structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117869421A (en) * | 2024-01-15 | 2024-04-12 | 杭州安永环保科技有限公司 | Mushroom head type hydraulic cylinder suitable for ultrahigh pressure filter press |
| CN117869421B (en) * | 2024-01-15 | 2024-05-28 | 杭州安永环保科技有限公司 | Mushroom head type hydraulic cylinder suitable for ultrahigh pressure filter press |
-
2020
- 2020-11-20 CN CN202022707734.7U patent/CN213540917U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117869421A (en) * | 2024-01-15 | 2024-04-12 | 杭州安永环保科技有限公司 | Mushroom head type hydraulic cylinder suitable for ultrahigh pressure filter press |
| CN117869421B (en) * | 2024-01-15 | 2024-05-28 | 杭州安永环保科技有限公司 | Mushroom head type hydraulic cylinder suitable for ultrahigh pressure filter press |
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