阅读说明：本技术 桩基自平衡法用油缸及其自密封活塞 (Oil cylinder for pile foundation self-balancing method and self-sealing piston thereof ) 是由 张自平 符磊 马良 毛宇新 于 2019-09-03 设计创作，主要内容包括：本发明公开了一种桩基自平衡法用油缸及其自密封活塞,包括缸体和活塞,所述活塞的端面上具有环形加载槽,以及活塞对应加载槽的端部的外侧壁上具有密封凸起,所述缸体内具有一端封闭另一端开口的活塞腔；所述活塞配合于所述活塞腔内,并且加载槽朝向密封端,并且密封凸起与活塞腔的内壁密封贴合,以及缸体的密封端或是活塞上具有与加载槽衔接的进液孔。本发明中,活塞具有自密封效果,简化生产工艺、降低成本,提高生产效率。(The invention discloses an oil cylinder for a pile foundation self-balancing method and a self-sealing piston thereof, which comprise a cylinder body and a piston, wherein the end surface of the piston is provided with an annular loading groove, the outer side wall of the end part of the piston corresponding to the loading groove is provided with a sealing bulge, and the cylinder body is internally provided with a piston cavity with one closed end and the other open end; the piston is matched in the piston cavity, the loading groove faces to the sealing end, the sealing protrusion is in sealing fit with the inner wall of the piston cavity, and the sealing end of the cylinder body or the piston is provided with a liquid inlet hole connected with the loading groove. In the invention, the piston has a self-sealing effect, the production process is simplified, the cost is reduced, and the production efficiency is improved.)

1. The utility model provides a pile foundation self-balancing method is with self sealss piston, characterized by: the end face of the piston is provided with an annular loading groove, and the outer side wall of the end part of the piston corresponding to the loading groove is provided with a sealing bulge.

2. The self-sealing piston for pile foundation self-balancing method according to claim 1, wherein: the section of the loading groove is of a horn-shaped structure.

3. the self-sealing piston for pile foundation self-balancing method according to claim 1, wherein: the piston is of an annular structure.

4. the self-sealing piston for pile foundation self-balancing method according to claim 1, wherein: the piston is of a cylindrical structure.

5. The utility model provides a pile foundation is hydro-cylinder for self-balancing method which characterized by: comprising a cylinder and a self-sealing piston according to claims 1-2;

A piston cavity with one end closed and the other end opened is formed in the cylinder body;

The piston is matched in the piston cavity, the loading groove faces to the sealing end, the sealing protrusion is in sealing fit with the inner wall of the piston cavity, and the sealing end of the cylinder body or the piston is provided with a liquid inlet hole connected with the loading groove.

6. the oil cylinder for the pile foundation self-balancing method according to claim 5, wherein: the cylinder body comprises an inner cylinder sleeve, an outer cylinder sleeve and an end cover, wherein the inner cylinder sleeve and the outer cylinder sleeve are coaxially arranged on the end cover, and a piston cavity is formed among the inner cylinder sleeve, the outer cylinder sleeve and the end cover.

7. The oil cylinder for the pile foundation self-balancing method according to claim 5, wherein: the cylinder body comprises a cylinder sleeve and a cover plate positioned at the end part of the cylinder sleeve, and a piston cavity is formed between the cylinder sleeve and the cover plate.

Technical Field

The invention relates to the field of pile foundation detection, in particular to an oil cylinder for a pile foundation self-balancing method and a self-sealing piston thereof.

background

In the detection of the pile foundation self-balancing method, a loading unit, namely an oil cylinder, is required to be used for driving the upper pile body and the lower pile body to move relatively. The structure of the traditional oil cylinder comprises a cylinder barrel, a piston and a sealing component between the cylinder barrel and the piston; in order to realize the sealing effect, the matching surface of the related sealing assembly needs to be subjected to finish machining, and meanwhile, a groove structure for placing the sealing assembly needs to be arranged, so that the requirements on the production process and quality control are strict, the production cost is higher, the production efficiency is lower, and an improved space exists.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the oil cylinder for the pile foundation self-balancing method and the self-sealing piston thereof, wherein the piston has a self-sealing effect, the production process is simplified, the cost is reduced, and the production efficiency is improved.

in order to achieve the purpose, the invention provides the following technical scheme:

The utility model provides a pile foundation self-balancing method is with self sealss piston, characterized by: the end face of the piston is provided with an annular loading groove, and the outer side wall of the end part of the piston corresponding to the loading groove is provided with a sealing bulge.

Preferably, the section of the loading groove is of a horn structure.

Preferably, the piston is of an annular structure.

Preferably, the piston is of a cylindrical structure.

the utility model provides a pile foundation is hydro-cylinder for self-balancing method which characterized by: comprising a cylinder and a self-sealing piston according to claims 1-2;

A piston cavity with one end closed and the other end opened is formed in the cylinder body;

The piston is matched in the piston cavity, the loading groove faces to the sealing end, the sealing protrusion is in sealing fit with the inner wall of the piston cavity, and the sealing end of the cylinder body or the piston is provided with a liquid inlet hole connected with the loading groove.

Preferably, the cylinder body comprises an inner cylinder sleeve, an outer cylinder sleeve and an end cover, the inner cylinder sleeve and the outer cylinder sleeve are coaxially arranged on the end cover, and a piston cavity is formed among the inner cylinder sleeve, the outer cylinder sleeve and the end cover.

Preferably, the cylinder block comprises a cylinder liner and a cover plate at the end of the cylinder liner, and a piston cavity is formed between the cylinder liner and the cover plate.

The invention has the advantages that:

1. the self-sealing piston is assembled in the cylinder body, and the sealing bulge has better deformation performance due to the arrangement of the loading groove, so that the self-sealing piston can be stably attached to the inner wall of the cylinder body to achieve a stable sealing effect;

2. In the loading process of the oil cylinder, when the loading liquid is loaded on the loading groove, the loading liquid extrudes the side wall of the loading groove, so that the sealing bulge is more tightly attached to the inner wall of the piston cavity, the sealing effect between the loading groove and the cylinder body is obviously improved, and the oil cylinder is ensured to have stable sealing performance.

Therefore, the oil cylinder only comprises the cylinder body and the piston, the sealing assembly is saved, namely the production of the sealing assembly is saved, the production cost is reduced, meanwhile, the assembly of the sealing assembly is omitted, and the production efficiency is improved.

Drawings

FIG. 1 is a cross-sectional view of a piston in a first configuration provided in this embodiment;

FIG. 2 is a cross-sectional view of a piston in a second configuration provided in this embodiment;

Fig. 3 is a cross-sectional view of a cylinder with a first structure provided in this embodiment;

Fig. 4 is a cross-sectional view of an oil cylinder of the second structure provided in this embodiment.

Detailed Description

The oil cylinder and the self-sealing piston thereof for the pile foundation self-balancing method are further described with reference to fig. 1 to 4.

An oil cylinder for a pile foundation self-balancing method comprises cylinder bodies 4a and 4b and self-sealing pistons 1a and 1 b;

The pistons 1a and 1b have an annular loading groove 11 on one end face, and the pistons 1a and 1b have a sealing protrusion 12 on the outer side wall of the end portion corresponding to the loading groove 11, in this embodiment, the loading groove 11 is located on the lower end face of the pistons 1a and 1b, and the loading groove 11 is arranged coaxially with the pistons 1a and 1 b.

The cylinder bodies 4a and 4b are internally provided with piston cavities 6 with lower ends closed and upper ends opened; the self-sealing pistons 1a and 1b are matched in the corresponding piston cavities 6, the loading grooves 11 face the sealing ends, the sealing protrusions 12 are in sealing fit with the inner walls of the piston cavities, and the sealing ends of the cylinders 4a and 4b or the self-sealing pistons 1a and 1b are provided with liquid inlet holes 3 and 2 connected with the loading grooves 11.

Through the technical scheme, the self-sealing pistons 1a and 1b are assembled in the corresponding cylinder bodies 4a and 4b, and the loading cavities are formed between the loading grooves 11 and the sealing ends of the cylinder bodies 4a and 4 b. Due to the arrangement of the loading groove 11, the sealing bulge 12 has better deformation performance, so that the sealing bulge can be stably attached to the inner walls of the cylinder bodies 4a and 4b, and the stable sealing effect is achieved; on the other hand, in the loading process of the oil cylinder, when the loading liquid is loaded in the loading cavity, the loading liquid extrudes the side wall of the loading groove 11, so that the sealing bulge 12 is more tightly attached to the inner wall of the piston cavity, the sealing effect between the loading groove 11 and the cylinder bodies 4a and 4b is obviously improved, and the oil cylinder is ensured to have stable sealing performance.

in this embodiment, a first method of loading the loading chamber with the loading liquid is as follows: the upper end of the piston 1b is downwards provided with a liquid inlet hole 2, and the lower end of the liquid inlet hole 2 is connected with the loading groove 11, so that the loading liquid is added into the loading groove 11 through the upper end of the liquid inlet hole on the upper end surface of the piston 1b, and the loading effect is realized. The structure is simple and the operation is convenient.

And a second loading mode: the sealed end of the cylinder body 4a is provided with a liquid inlet hole 3 directly connected with the loading groove 11, and the loading groove 11 is loaded by connecting a loading pipe through the liquid inlet hole 3.

The embodiment is further configured as follows: the section of the loading groove 11 is of a horn-shaped structure. The extrusion of liquid carrier to sealed arch 12 is convenient for to add by the horn shape structure, and the loading force of liquid carrier that adds is big promptly, and sealed arch 12 is inseparabler with the laminating of piston intracavity wall, and sealed effect is better.

In this embodiment, the first structure of the piston and the cylinder is: the piston 1b is of an annular structure, the cylinder body 4b comprises an inner cylinder sleeve 42, an outer cylinder sleeve 41 and an end cover 43, the inner cylinder sleeve 42 and the outer cylinder sleeve 41 are coaxially welded on the end cover 43, and a piston cavity for assembling the piston 1b is formed among the inner cylinder sleeve 42, the outer cylinder sleeve 41 and the end cover 43.

The second structure of the piston and the cylinder body is as follows: the piston 1a is of a columnar structure, the cylinder 4a comprises a cylinder sleeve 44 and a cover plate 45 positioned at the end part of the cylinder sleeve 44, and a piston 1a cavity for assembling the piston 1a is formed between the cylinder sleeve 44 and the cover plate 45.

unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.

unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.