CN214118671U

CN214118671U - Protective structure of hydraulic bolt

Info

Publication number: CN214118671U
Application number: CN202022115877.9U
Authority: CN
Inventors: 于国富
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-09-03
Anticipated expiration: 2030-09-23

Abstract

The utility model discloses a protective structure of hydraulic bolt, it includes first connecting piece, second connecting piece and hydraulic bolt, hydraulic bolt's screw rod passes first connecting piece and second connecting piece and its both ends and passes through nut locking with first connecting piece and second connecting piece fixed connection, can be provided with the safety cover with the nut dismouting outside screw rod and the nut, the one end of safety cover is the open end, the other end is the blind end, sealed setting between the lateral wall of open end and first connecting piece and second connecting piece. According to the protection structure of the hydraulic bolt, the protection covers are additionally arranged at the two ends of the hydraulic bolt, and the end faces of the hydraulic bolt are sealed by the sealing rings, so that the exposed screw threads and the exposed nuts of the hydraulic bolt are protected. The structure is simple, and the realization is easy; but also plays a role in preventing seawater erosion, shortens the maintenance period of the pipeline and reduces the maintenance cost.

Description

Protective structure of hydraulic bolt

Technical Field

The utility model relates to a bolt especially relates to a hydraulic bolt's protective structure.

Background

As is well known, hydraulic bolts are widely used in devices such as marine shafting flanges, large engine cylinders, and large engineering dredge boats. Because the working environment of the engineering ship is complex, the hydraulic bolt connected to the pipeline flange needs to be soaked in seawater or river water for a long time, when the hydraulic bolt needs to be disassembled in the later maintenance of the pipeline, the nut is difficult to disassemble due to the fact that the hydraulic bolt is soaked for a long time and the screw threads and the nut exposed outside are corroded, and even the nut needs to be damaged, so that the hydraulic bolt is scrapped.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hydraulic bolt's protective structure to there is the screw rod screw thread and the nut that expose outside to be easily by the problem of corroding in the hydraulic bolt among the solution prior art.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a protective structure of hydraulic bolt, its includes first connecting piece, second connecting piece and hydraulic bolt, hydraulic bolt's screw rod passes first connecting piece and second connecting piece and its both ends and passes through nut locking with first connecting piece and second connecting piece fixed connection, wherein, can be provided with the safety cover with the nut outer energy dismouting, the one end of safety cover is the open end, and the other end is the blind end, the open end with sealed setting between the lateral wall of first connecting piece and second connecting piece.

As a further improvement of the scheme, a threaded hole is formed in the outer end portion of the screw rod, a through hole is formed in the closed end, and a fixing bolt penetrates through the through hole and is locked in the threaded hole to fix the protective cover outside the screw rod and the nut.

As a further improvement of the scheme, the opening end is provided with a circle of sealing groove, and a sealing ring is arranged in the sealing groove.

As a further improvement of the scheme, a sealing ring is arranged between the head end of the fixing bolt and the closed end.

As a further improvement of the scheme, the protective cover comprises a large outer circle portion and a small outer circle portion which are of an integrated structure, one end of the large outer circle portion is an opening end, the other end of the large outer circle portion is communicated with the small outer circle portion, the inner hole of the large outer circle portion is matched with the outer diameter of the nut, and the inner hole of the small outer circle portion is matched with the outer diameter of the screw rod.

As a further improvement of the solution, the inner bore of the small outer circular portion has an inner thread section matching the thread of the screw.

As a further improvement of the scheme, the outer wall of the small outer circle part is provided with a flat section which is convenient for disassembly and assembly operation.

As a further improvement of the scheme, the protective cover is integrally formed by a stainless steel plate or hard plastics.

As a further improvement of the scheme, the fixing bolt is a stainless steel bolt.

The beneficial effects of the utility model are that, compare with prior art hydraulic bolt's protective structure is through adding the protection cover at hydraulic bolt both ends to carry out end face seal with the sealing washer, thereby reached protection hydraulic bolt exerted screw rod screw thread and nut. The structure is simple, and the realization is easy; the hydraulic bolt has the advantages of preventing seawater erosion, improving the assembling and disassembling service performance and prolonging the service life of the hydraulic bolt, greatly shortening the maintenance period of the connecting part and reducing the maintenance cost.

Drawings

Fig. 1 is a schematic structural view of a protective structure of a hydraulic bolt according to embodiment 1 of the present invention;

fig. 2 is a sectional view of a protective cover of a hydraulic bolt protective structure according to embodiment 1 of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 1 at A;

FIG. 4 is an enlarged view of a portion of FIG. 1 at B;

fig. 5 is a schematic view of mounting a hydraulic bolt of a protective structure for a hydraulic bolt according to embodiment 1 of the present invention.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 5, in the present embodiment, a protection structure of a hydraulic bolt includes a first flange 1 as a first connecting member, a second flange 2 as a second connecting member, and a hydraulic bolt 3, where the hydraulic bolt 3 includes a screw 30, a taper sleeve 31, and a nut 32, and two ends of the screw 30 are provided with threads; the middle excircle part of the screw rod 30 is provided with a taper and the surface is provided with a spiral groove; a screw hole is formed in one end face and communicated with the spiral groove on the surface of the cone, and the excircle of the cone sleeve 31 is cylindrical; the inner hole is a taper hole with a certain taper matched with the screw 30, and the excircle of the nut 32 is provided with evenly distributed cylindrical holes; the internal bore is a threaded bore that mates with threads on the threaded rod 30. The specific installation process of the hydraulic bolt 3 is as follows: assembling a screw 30 and a taper sleeve 31 of a hydraulic bolt, directly installing the screw 30 and the taper sleeve 31 into through holes of a first flange 1 and a second flange 2, sequentially installing a positioning sleeve and a hydraulic stretcher 4 on a long thread at one end of the screw 30, generating axial tension through the hydraulic stretcher 4 and meeting design requirements, utilizing the same conical surface between the screw 30 and the taper sleeve 31 to enable the screw 30 to generate axial displacement in the taper sleeve 31 and simultaneously enable the taper sleeve 31 to generate radial expansion, eliminating a gap between the taper sleeve 31 and the through holes of the first flange 1 and the second flange 2 and meeting the magnitude of interference of the design requirements, and screwing out the positioning sleeve and the hydraulic stretcher 4 after releasing oil pressure; then, nuts 32 at two ends are screwed and attached to end faces of corresponding flanges, the pre-tightening sleeve 5 is sleeved on the nuts 32, the hydraulic stretcher 4 is screwed on threads of the screw 30, the hydraulic stretcher 4 is required to be attached to the end faces of the pre-tightening sleeve 5, axial pre-tightening force is generated through the hydraulic stretcher 4, and meanwhile, the nuts 32 are locked by operating the mounting rod 6; after oil pressure is discharged, the pre-tightening sleeve 5 and the hydraulic stretcher 4 are screwed out.

Above-mentioned hydraulic bolt is after the assembly is accomplished, can be provided with safety cover 7 outside screw rod 30 and the nut 32 with dismouting, safety cover 7 is made by the stainless steel sheet material, it includes big excircle portion 70 and little excircle portion 71 of a body structure, the one end of big excircle portion 70 is the open end, the other end is linked together with the one end of little excircle portion 71, the other end of little excircle portion 71 is the blind end, the external diameter setting of the hole cooperation nut 32 of big excircle portion 70, the hole of little excircle portion 71 has the internal thread section 72 with screw rod 30's screw thread assorted, screw rod 30's outer tip has seted up the screw hole, through-hole 73 has been seted up on the blind end of little excircle portion 71, stainless steel bolt 8 passes the through-hole 73 of little excircle portion 71 and locks in the screw hole of screw rod 30 tip and is fixed in safety cover 7 outside screw rod 30 and nut 32.

In order to ensure the sealing performance of the protection cover 7 after installation, the opening end of the large outer circular portion 70 is provided with a circle of sealing groove 74, a sealing ring 75 is arranged in the sealing groove 74, and a sealing ring 75 is also arranged between the head end of the stainless steel bolt 8 and the closed end of the small outer circular portion 71. In order to facilitate the disassembly and assembly operation, the outer wall of the small outer circle part 71 is provided with a flat section.

The specific installation process of the protective cover 7 is as follows: respectively screwing the protective covers 7 at the two ends by using a spanner, and requiring the protective covers to be tightly attached to the end faces of the flanges, so that the sealing rings 75 on the end faces of the protective covers 7 are tightly pressed to play a role in sealing the end faces; the seal ring 75 is then fitted to the root of the stainless steel bolt 8, and the stainless steel bolt 8 is passed through the through hole 73 of the small outer circular portion 71 and locked in the threaded hole at the end of the screw 30, and is sealed and tightened. Therefore, the screw threads and the nuts exposed outside are protected, and the purpose of preventing the whole hydraulic bolt from rusting is achieved.

It should be noted that, this protective structure is not limited to be suitable for on the hydraulic bolt, and for other forms of bolt, this protective structure also can play the guard action under special service environment.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. The utility model provides a protective structure of hydraulic bolt, its includes first connecting piece, second connecting piece and hydraulic bolt, hydraulic bolt's screw rod passes first connecting piece and second connecting piece and its both ends and passes through nut locking with first connecting piece and second connecting piece fixed connection, a serial communication port, can be provided with the safety cover with the nut outer energy dismouting, the one end of safety cover is the open end, and the other end is the blind end, the open end with sealed setting between the lateral wall of first connecting piece and second connecting piece.

2. A hydraulic bolt guard structure as claimed in claim 1, wherein the outer end of the threaded rod is threaded and the closed end is provided with a through hole, and a fixing bolt is passed through the through hole and locked in the threaded hole to fix the protective cover outside the threaded rod and the nut.

3. The hydraulic bolt protection structure of claim 1, wherein the open end is provided with a ring of sealing groove, and a sealing ring is arranged in the sealing groove.

4. A hydraulic bolt guard structure according to claim 2, wherein a sealing ring is provided between the head end and the closed end of the fixing bolt.

5. The hydraulic bolt protection structure according to claim 1, wherein the protection cover comprises a large outer circle portion and a small outer circle portion which are integrally formed, one end of the large outer circle portion is an open end, the other end of the large outer circle portion is communicated with the small outer circle portion, an inner hole of the large outer circle portion is arranged in a manner of being matched with the outer diameter of the nut, and an inner hole of the small outer circle portion is arranged in a manner of being matched with the outer diameter of the screw rod.

6. A hydraulic bolt guard structure according to claim 5, wherein the internal bore of the small outer circular portion has an internal thread section that matches the thread of the screw.

7. A hydraulic bolt guard structure according to claim 5, wherein the outer wall of the small outer circular portion is provided with a flattened section to facilitate the disassembly and assembly operation.

8. A hydraulic bolt shelter structure as claimed in claim 1 in which the shield is integrally formed from stainless steel plate or rigid plastics.

9. A hydraulic bolt guard structure according to claim 2 wherein the fixing bolt is a stainless steel bolt.