CN202215549U

CN202215549U - Fastening bolt

Info

Publication number: CN202215549U
Application number: CN2011200594035U
Authority: CN
Inventors: 孙浩儿
Original assignee: NINGBO HAOBO COMMERCE CO Ltd
Current assignee: NINGBO HAOBO COMMERCE CO Ltd
Priority date: 2011-03-03
Filing date: 2011-03-03
Publication date: 2012-05-09
Anticipated expiration: 2021-03-03

Abstract

The utility model discloses a fastening bolt comprising a threaded rod (1), a polished rod (3) and a head part (5) which are sequentially connected into a whole. The fastening bolt is characterized in that the head part (5) is a cylinder, and a limiting rod (4) is axially welded on the circumferential surface of the head part (5). After adopting the structure, the head part of the cylindrical bolt has no bulgy edge angle and no rusty node, so that the head part of the bolt is not easy to rust, and the service life of the bolt can be prolonged; and simultaneously, as the limiting rod is axially welded on the outer circumferential surface of the head part, by utilizing the limiting role of the limiting rod, a wrench is used for screwing on or unscrewing a nut, so that the mounting and dismounting of the bolt can be completed; therefore, destructive measures adopted for dismounting can be avoided, resource waste can not be caused, and the mounting and the dismounting are time-saving and labor-saving.

Description

Clamping bolt

Technical field

The utility model relates to fastener areas, specifically is a kind of clamping bolt that is applicable to open-air construction projects such as railway, highway, boats and ships, harbour.

Background technique

In open-air capital construction engineerings such as railway, highway, boats and ships, harbour, often can use clamping bolt, the head of these clamping bolts is hexagon head or square toes usually, needs hexagon wrench or square spanner during assembling, and bolts and nuts are tightened.But this clamping bolt comes from the principle of node because head is hexagonal rib or Square-edge according to corrosion of metal; There have the place of corner angle to be easy on the metal to be oxidized, thereby be easy to eroded by severse weather, causes bolt not screw out through spanner; Can only take destructive behave to remove; Like means such as gas cuttings, can cause the wasting of resources like this, take time and effort again simultaneously.

The model utility content

The utility model technical problem to be solved is to provide a kind of and be difficult for getting rusty, can increase the service life and clamping bolt easy for installation.

For solving the problems of the technologies described above, the bolt that is used for construction project that the utility model provides comprises the threaded stem, polished rod and the head that are connected as a single entity successively, and described head is a cylindrical body, and on the head circumferential surface, axially is welded with limit stick.

After adopting above structure; The utility model compared with prior art has following advantage: the head of bolt is made cylindrical, therefore; This cylindrical bolt head is the corner angle of protrusion not; Just do not have the corrosion node, thereby bolt head is not easy to get rusty, and can prolong the working life of bolt; Simultaneously, be welded with axial limit stick on the outer peripheral surface of head, therefore; Only need on the object that presets, to leave restraining groove, so just can the limit stick of bolt head be placed in the restraining groove, utilize the position-limiting action of limit stick; Use spanner to screw on or unscrew nut at the other end of bolt, can accomplish the installation and removal of bolt, therefore; Can avoid adopting destructive behave to remove, just can not cause the waste of resource, dismounting is time saving and energy saving.

As improvement, described limit stick is cylindrical.Adopt the structure of this cylindrical limit stick, make limit stick when welding with bolt head, weld seam can be hidden in the space between limit stick and the bolt head better, can not cause the interference with restraining groove, can install better.

As further improvement, the ratio of the diameter of described head and the diameter of threaded stem was more than or equal to 1.5: 1.Wherein best ratio is: the ratio of the diameter of described head and the diameter of threaded stem equals 1.5: 1.After adopting this structure, make bolt head can satisfy stressed requirement, waste material is not more optimized resource again.

As further improving, the joint of threaded stem and polished rod has circular groove.Adopt this structure; Be because bolt is easy to damaged screw after repeated disassembled and assembled; After having designed circular groove, this circular groove has played the effect of oil impregnate, and lubricant oil can flow to the tooth that each is in contact with one another through circular groove; So both reduced the friction between double-screw bolt and the supporting nut thread, simultaneously also leicht fallen D/A in nutting.

Description of drawings

Fig. 1 is the main TV structure schematic representation of the utility model clamping bolt;

Fig. 2 is the left TV structure schematic representation of the utility model clamping bolt.

Wherein, 1, threaded stem; 2, circular groove; 3, polished rod; 4, limit stick; 5, head.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is done explanation in further detail.

Structural representation by the utility model clamping bolt illustrated in figures 1 and 2 can know that it comprises threaded stem 1, polished rod 3 and the head 5 that is connected as a single entity successively, and described head 5 is a cylindrical body, and on head 5 circumferential surfacies, axially is welded with limit stick 4.Described limit stick 4 is cylindrical, and the diameter range of this limit stick 4 is 10mm～20mm usually.

The ratio of the diameter of the diameter of described head 5 and threaded stem 1 was more than or equal to 1.5: 1.In the present embodiment, the ratio of the diameter of the diameter of described head 5 and threaded stem 1 equals 1.5: 1.Such as, when the diameter of threaded stem 1 was 80 millimeters, the diameter of bolt head was 120 millimeters.

Described threaded stem 1 has circular groove 2 with the joint of polished rod 3.

The utility model inserts needed position with bolt in use, utilize limit stick and the spacing hole location of presetting on the object on the bolt head after, get final product at the other end (the being threaded end) nut of screwing on of bolt.

The utility model is not limited to above-described structure, and wherein limit stick 4 can also be a square bar, and both its cross section was square; Also can be the triangle rod, promptly its cross section be leg-of-mutton; Or the like.These variations all fall within the protection domain of the utility model.

Claims

1. a clamping bolt comprises the threaded stem (1), polished rod (3) and the head (5) that are connected as a single entity successively, and it is characterized in that: described head (5) is a cylindrical body, and on head (5) circumferential surface, axially is welded with limit stick (4).

2. clamping bolt according to claim 1 is characterized in that: described limit stick (4) is for cylindrical.

3. clamping bolt according to claim 1 is characterized in that: the ratio of the diameter of the diameter of described head (5) and threaded stem (1) was more than or equal to 1.5: 1.

4. clamping bolt according to claim 3 is characterized in that: the ratio of the diameter of the diameter of described head (5) and threaded stem (1) equals 1.5: 1.

5. clamping bolt according to claim 1 is characterized in that: described threaded stem (1) has circular groove (2) with the joint of polished rod (3).