CN210265438U

CN210265438U - Large pin shaft

Info

Publication number: CN210265438U
Application number: CN201920886097.9U
Authority: CN
Inventors: 雷杼致; 王刚
Original assignee: Fujian Mawei Shipbuilding Co Ltd
Current assignee: Fujian Mawei Shipbuilding Co Ltd
Priority date: 2019-06-13
Filing date: 2019-06-13
Publication date: 2020-04-07
Anticipated expiration: 2029-06-13

Abstract

The utility model discloses a large pin shaft, belonging to the technical field of mechanical connection structures, wherein the large pin shaft comprises round steel and a hexagonal head, and the hexagonal head is arranged at one end of the round steel; the both ends of round steel are equipped with the external screw thread respectively, the hexagonal head is the column body that the bottom surface is regular hexagon about for, the hexagonal head is equipped with the through-hole along the axial, be equipped with the internal thread with external screw thread looks adaptation on the lateral wall of through-hole, the junction welding of hexagonal head and round steel. The utility model provides a large-scale round pin axle is assembled after hexagonal head and the processing of round steel components of a whole that can function independently, can be according to the round steel of required physical selection size adaptation, both ends attack the tooth can, then the suitable steel sheet preparation hexagonal head of reselecting thickness need not to turn out the screw rod diameter that needs with the hexagonal steel again or mill out the hexagonal head part on the round steel again, has promoted the efficiency of processing by a wide margin, has reduced the waste to the raw materials, has reduced the cost of processing simultaneously.

Description

Large pin shaft

Technical Field

The utility model belongs to the technical field of mechanical connection structure, concretely relates to large-scale round pin axle.

Background

In the hoisting of large-scale components, a steel cable and a lifting appliance need to be connected by using a pin shaft, and the specific method is that one end of the closed steel cable is placed in a lifting lug of the lifting appliance, and then the pin shaft penetrates through the lifting lug and is locked by using double nuts. During hoisting, a lifting hook of the crane applies a lifting force to the steel cable, the steel cable applies a lifting force to the pin shaft, the pin shaft applies a lifting force to the lifting appliance, and the lifting appliance applies a lifting force to a large-scale component to be lifted, so that the purpose of lifting is achieved.

Because large-scale component weight is very big, corresponding round pin axle should can bear huge shearing force and bending stress, the size of the round pin axle of lifting by crane large-scale component is very big. Typically, such large pins are formed in a hex head (as shown in fig. 4) similar to a hex head bolt. Generally, a round steel with the diameter larger than or equal to the external diameter of the hexagonal head is used for turning the screw rod part to obtain the required screw rod diameter by a machine tool, and then the hexagonal head part is milled. Or the screw part is directly turned out of the required screw diameter by using hexagonal steel. And then tapping to form a thread part, and finally manufacturing a corresponding pin shaft nut. Because the hexagonal head external diameter can be more than the screw rod diameter greatly, so the round pin axle of structure can waste more than half material like this, has increased the processing cost by a wide margin.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to solve the technical problems that: the large pin shaft is less in material consumption and capable of saving cost.

In order to solve the technical problem, the utility model discloses a technical scheme be: a large pin roll comprises round steel and a hexagonal head, wherein the hexagonal head is arranged at one end of the round steel;

the both ends of round steel are equipped with the external screw thread respectively, the hexagonal head is the column body that the bottom surface is regular hexagon about for, the hexagonal head is equipped with the through-hole along the axial, be equipped with the internal thread with external screw thread looks adaptation on the lateral wall of through-hole, the junction welding of hexagonal head and round steel.

The length of the external thread at the two ends of the round steel is different, and the hexagonal head is arranged at the shorter end of the external thread of the round steel.

Wherein the height of the hexagonal head is 1/10 of the height of the round steel.

Wherein, the round steel with the hexagonal head coaxial setting.

Wherein, the round steel runs through the setting of hexagonal head.

The beneficial effects of the utility model reside in that: the utility model provides a large-scale round pin axle is assembled after hexagonal head and the processing of round steel components of a whole that can function independently, can be according to the round steel of required physical selection size adaptation, both ends attack the tooth can, then the suitable steel sheet preparation hexagonal head of reselecting thickness need not to turn out the screw rod diameter that needs with the hexagonal steel again or mill out the hexagonal head part on the round steel again, has promoted the efficiency of processing by a wide margin, has reduced the waste to the raw materials, has reduced the cost of processing simultaneously.

Drawings

Fig. 1 is a schematic side view of a large pin shaft according to an embodiment of the present invention;

fig. 2 is a schematic side view of the assembled large pin shaft according to the embodiment of the present invention;

fig. 3 is a schematic top view of a hexagonal head of a large pin according to an embodiment of the present invention;

FIG. 4 is a schematic side view of a conventional large pin;

description of reference numerals: 1. round steel; 2. an external thread; 3. a hexagonal head; 4. and a through hole.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

The utility model discloses the most crucial design lies in: the integral structure of the original large pin shaft is improved into a split assembly type structure, so that the utilization rate of raw materials is improved, and the waste of the raw materials is reduced.

Referring to fig. 1 to 4, the large pin roll of the present invention includes a round steel 1 and a hexagonal head 3, wherein the hexagonal head 3 is disposed at one end of the round steel 1;

the both ends of round steel 1 are equipped with external screw thread 2 respectively, hexagonal head 3 is the column body that the bottom surface is regular hexagon about for, hexagonal head 3 is equipped with through-hole 4 along the axial, be equipped with the internal thread with 2 looks adaptations of external screw thread on the lateral wall of through-hole 4, the junction welding of hexagonal head 3 and round steel 1.

The utility model discloses a theory of operation does: pass in the through-hole 4 of hexagonal head 3 with the one end of round steel 1, internal thread and external screw thread 2 cooperation for the one end of hexagonal head 3 and round steel 1 links together, then welds in the periphery of hexagonal head 3 and round steel 1 junction.

From the above description, the beneficial effects of the present invention are: the utility model provides a large-scale round pin axle is assembled after hexagonal head and the processing of round steel components of a whole that can function independently, can be according to the round steel of required physical selection size adaptation, both ends attack the tooth can, then the suitable steel sheet preparation hexagonal head of reselecting thickness need not to turn out the screw rod diameter that needs with the hexagonal steel again or mill out the hexagonal head part on the round steel again, has promoted the efficiency of processing by a wide margin, has reduced the waste to the raw materials, has reduced the cost of processing simultaneously.

Further, the external screw thread 2 at 1 both ends of round steel is inequality in length, hexagonal head 3 sets up in the shorter one end of 1 external screw thread 2 of round steel.

From the above description, since the hexagonal head has a smaller thickness, the hexagonal head can be assembled by providing a shorter external thread, which can reduce the processing time and reduce the waste of forgiveness.

Further, the height of the hexagonal head 3 is 1/10 of the height of the round steel 1.

Further, the round steel 1 and the hexagonal head 3 are coaxially arranged.

From the above description, through setting up round steel and hexagonal head is coaxial for the large-scale round pin structure of gained is stable.

Further, the round steel 1 penetrates through the hexagonal head 3.

From the above description, through running through the setting of hexagonal head with the round steel, provide sufficient welding space, and then improved the stability that hexagonal head and round steel are connected.

Referring to fig. 1 to 4, a first embodiment of the present invention is:

a large pin shaft comprises round steel 1 and a hexagonal head 3, wherein the hexagonal head 3 is arranged at one end of the round steel 1, the round steel 1 and the hexagonal head 3 are coaxially arranged, and the round steel 1 penetrates through the hexagonal head 3;

the two ends of the round steel 1 are respectively provided with an external thread 2, the hexagonal head 3 is a cylindrical body with regular hexagon upper and lower bottom surfaces, the hexagonal head 3 is provided with a through hole 4 along the axial direction, the side wall of the through hole 4 is provided with an internal thread matched with the external thread 2, and the joint of the hexagonal head 3 and the round steel 1 is welded;

the external threads 2 at two ends of the round steel 1 are different in length, and the hexagonal head 3 is arranged at one end, with the shorter external thread 2, of the round steel 1; the height of the hexagonal head 3 is 1/10 of the height of the round steel 1.

To sum up, the large pin shaft provided by the utility model assembles the hexagonal head and the round steel after being processed in a split manner, the round steel with adaptive size can be selected according to the actual requirement, tapping can be carried out at two ends, then the steel plate with proper thickness is selected to manufacture the hexagonal head, the hexagonal steel is not required to be turned to the required screw diameter or the hexagonal head part is milled on the round steel, the processing efficiency is greatly improved, the waste of raw materials is reduced, and the processing cost is reduced;

the round steel and the hexagonal head are coaxially arranged, so that the obtained large pin shaft is stable in structure;

through running through the setting of hexagonal head with the round steel, provide sufficient welding space, and then improved the stability that hexagonal head and round steel are connected.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. The large pin shaft is characterized by comprising round steel and a hexagonal head, wherein the hexagonal head is arranged at one end of the round steel;

2. The large pin shaft according to claim 1, wherein the external threads at the two ends of the round steel are different in length, and the hexagonal head is arranged at one end of the external thread, which is shorter.

3. The large pin of claim 1, wherein the height of said hex head is 1/10 round steel height.

4. The large pin of claim 1, wherein said round steel and said hexagonal head are coaxially disposed.

5. The large pin of claim 1, wherein said round steel is disposed through said hex head.