CN113847322A

CN113847322A - Hexagonal head bolt

Info

Publication number: CN113847322A
Application number: CN202111018091.8A
Authority: CN
Inventors: 徐勇; 张建东; 侯建良; 徐奇军; 张仕益; 杨安意
Original assignee: Ningbo Ningli High Strength Fastener Co ltd
Current assignee: Ningbo Ningli High Strength Fastener Co ltd
Priority date: 2021-09-01
Filing date: 2021-09-01
Publication date: 2021-12-28
Anticipated expiration: 2041-09-01
Also published as: CN113847322B

Abstract

The invention discloses a hexagonal bolt which comprises a hexagonal head and a screw rod, wherein the screw rod is connected with the hexagonal head, a distance measuring dial plate is arranged at the upper end of the hexagonal head, a dial plate linkage assembly is arranged in the hexagonal head, two thimbles are slidably connected at the lower end of the hexagonal head and symmetrically arranged by taking the screw rod as a center, the thimbles are linked with the dial plate linkage assembly, and the dial plate linkage assembly is linked with the distance measuring dial plate.

Description

Hexagonal head bolt

Technical Field

The invention relates to the technical field of bolts, in particular to a hexagonal head bolt.

Background

The hexagon head bolt is widely used for boilers, railways, highway bridges, industrial plants and the like, the conventional large hexagon head bolt has to reach the specified pretightening force during assembly construction, the hexagon head bolt is installed by using a special electric tool during construction, workers cannot know when the bolt rotates to the corresponding position, whether the bolt is twisted askew or not, if the bolt is not rotated to the corresponding position, the bolt needs to be repeatedly screwed, if the bolt is twisted askew, the bolt needs to be re-installed, and if the unevenness degree of a fastened component (such as a plate) per se is large, the bolt is not easy to find that certain early-screwed bolts are under-screwed after the whole assembly is finished.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a hexagonal head bolt to solve the problems in the prior art.

In order to solve the technical problem, the invention is solved by the following technical scheme:

the utility model provides a hexagonal head bolt, includes hexagonal head and screw rod, the screw rod is connected at hexagonal head, hexagonal head upper end is equipped with the range finding dial plate, be equipped with dial plate linkage assembly in the hexagonal head, hexagonal head lower extreme sliding joint has two thimbles, two the thimble uses the screw rod to set up as central symmetry, thimble and dial plate linkage assembly link mutually, dial plate linkage assembly links with the range finding dial plate mutually.

Preferably, the dial plate linkage assembly comprises two groups of transmission assemblies, a first gear assembly and a second gear assembly, the two groups of transmission assemblies are symmetrically arranged and are respectively linked with the first gear assembly and the second gear assembly, each transmission assembly comprises a shaft sleeve and a transmission rod, the shaft sleeves are rotatably connected in the hexagonal heads, sliding grooves are formed in the shaft sleeves and are connected with ejector pins in a screwed mode, the ejector pins can move up and down in the sliding grooves to drive the shaft sleeves to rotate, and one ends of the transmission rods are linked with the shaft sleeves.

Preferably, the first gear assembly comprises a first gear and a first gear shaft, the first gear shaft is rotatably connected in the hexagonal head, the first gear is connected to the first gear shaft, the second gear assembly comprises a second gear and a second gear shaft, the second gear shaft is rotatably connected in the hexagonal head, the second gear is connected to the second gear shaft, and the two transmission rods are respectively linked with the first gear shaft and the second gear shaft.

Preferably, the range finding dial plate includes quotation and pointer rotating assembly, be carved with the numeral on the quotation, pointer rotating assembly includes first pointer, second pointer, first rotation axis, second rotation axis, third gear and fourth gear, first pointer and second pointer all are located the quotation top, first pointer links to each other with first rotation axis, first rotation axis links to each other with the third gear, the third gear is geared mutually with first gear, the second pointer links to each other with the second rotation axis, the second rotation axis links to each other with the fourth gear, the fourth gear is geared mutually with the second gear.

Preferably, the first rotating shaft is sleeved outside the second rotating shaft, the third gear is positioned above the fourth gear, and the lower end of the second rotating shaft penetrates through the third gear to be connected with the fourth gear.

Preferably, an internal thread is formed in the sliding groove, and an external thread matched with the internal thread is formed at the rear part of the ejector pin.

Preferably, the outer side of the shaft sleeve is linked with the transmission rods through a first bevel gear assembly, and the two transmission rods are respectively linked with the first gear shaft and the second gear shaft through a second bevel gear assembly.

Preferably, the first bevel gear assembly and the second bevel gear assembly are each composed of two bevel gears.

The invention has the advantages that:

when the bolt is installed, the two thimbles move upwards and drive the pointers to rotate, whether the bolt is screwed down can be known by watching the distance measuring dial plate, the two thimbles are respectively positioned at the left side and the right side of the bolt, and whether the bolt is screwed down can be judged by watching whether the rotating angles of the two pointers are the same.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be discussed below, it is obvious that the technical solutions described in conjunction with the drawings are only some embodiments of the present invention, and for those skilled in the art, other embodiments and drawings can be obtained according to the embodiments shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

FIG. 4 is a schematic view of the structure of the hand rotating assembly of the present invention.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments described herein without the need for inventive work, are within the scope of the present invention.

As shown in fig. 1 to 4, a hexagon bolt comprises a hexagon head 1 and a screw 2, the screw 2 is connected to the hexagon head 1, a distance measuring dial is arranged at the upper end of the hexagon head 1, a dial linkage assembly is arranged in the hexagon head 1, two ejector pins 3 are slidably connected to the lower end of the hexagon head 1, the two ejector pins 3 are symmetrically arranged by taking the screw 2 as a center, the ejector pins 3 are linked with the dial linkage assembly, the dial linkage assembly is linked with the distance measuring dial, the dial linkage assembly comprises two groups of transmission assemblies which are symmetrically arranged, a first gear assembly and a second gear assembly, the two groups of transmission assemblies are respectively linked with the first gear assembly and the second gear assembly, the transmission assemblies comprise a shaft sleeve 7 and a transmission rod 8, the shaft sleeve 7 is rotatably connected in the hexagon head 1, a chute is formed in the shaft sleeve 7, and is rotatably connected with the ejector pins 3, the thimble 3 can move up and down in the sliding groove to drive the shaft sleeve 7 to rotate, one end of the transmission rod 8 is linked with the shaft sleeve 7, the first gear assembly comprises a first gear 12 and a first gear shaft 11, the first gear shaft 11 is rotationally connected in the hexagonal head 1, the first gear 12 is connected on the first gear shaft 11, the second gear assembly comprises a second gear 10 and a second gear shaft 9, the second gear shaft 9 is rotationally connected in the hexagonal head 1, the second gear 10 is connected on the second gear shaft 9, the two transmission rods 8 are respectively linked with the first gear shaft 11 and the second gear shaft 9, the distance measuring dial comprises a dial face 4 and a pointer rotating assembly, the dial face 4 is engraved with numbers, the pointer rotating assembly comprises a first pointer 5, a second pointer 6, a first rotating shaft 15, a second rotating shaft 16, a third gear 13 and a fourth gear 14, the first pointer 5 and the second pointer 6 are both positioned above the disc surface 4, the first pointer 5 is connected with a first rotating shaft 15, the first rotating shaft 15 is connected with a third gear 13, the third gear 13 is in toothed connection with a first gear 12, the second pointer 6 is connected with a second rotating shaft 16, the second rotating shaft 16 is connected with a fourth gear 14, the fourth gear 14 is in toothed connection with a second gear 10, the first rotating shaft 15 is sleeved outside the second rotating shaft 16, the third gear 13 is positioned above the fourth gear 14, the lower end of the second rotating shaft 16 passes through the third gear 13 to be connected with the fourth gear 14, an internal thread is arranged in the chute, an external thread matched with the internal thread is arranged at the rear part of the thimble 3, the outer side of the shaft sleeve 7 is linked with the transmission rod 8 through a first bevel gear assembly, the two transmission rods 8 are respectively linked with a first gear shaft 11 and a second gear shaft 9 through a second bevel gear assembly, the first bevel gear component and the second bevel gear component are both composed of two bevel gears.

The working principle of the invention is that a worker rotates the hexagonal head 1 by using a tool to enable the screw rod 2 to be gradually screwed into the fastening component, after the screw rod 2 is screwed in a certain distance, the thimble 3 is abutted against the outer wall of the fastening component, and the thimble 3 gradually slides upwards along with the continuous screwing in of the screw rod 2, in the process of upward movement of the thimble 3, because the external thread is matched with the internal thread of the chute, the thimble 3 can drive the shaft sleeve 7 to rotate, the shaft sleeve 7 drives the transmission rod 8 to rotate through the first bevel gear, the two transmission rods 8 respectively drive the first gear shaft 11 and the second gear shaft 9 to rotate through the second bevel gear, so that the first gear 12 and the second gear 10 rotate, the first gear 12 and the second gear 10 respectively drive the third gear 13 and the fourth gear 14 to rotate, the third gear 13 and the fourth gear 14 respectively drive the first rotating shaft 15 and the second rotating shaft 16 to rotate, the first rotating shaft 15 and the second rotating shaft 16 drive the first pointer 5 and the second pointer 6 to rotate respectively, numbers are engraved on the disc surface 4, workers judge the screwing-in length or the residual length of the bolt by observing the numerical values pointed by the first pointer 5 and the second pointer 6, so that the bolt can be accurately rotated to a corresponding position, if the bolt is screwed askew, a certain included angle can be formed between the hexagonal head 1 and the outer surface of a fastening part, when the bolt is screwed gradually, because the two thimbles 3 are symmetrically arranged by taking the screw rod 2 as a center, the upward sliding distance of one thimble 3 can be larger than that of the other thimble 3, and whether the screw rod 2 is screwed askew or not can be judged by observing whether the numerical values pointed by the first pointer 5 and the second pointer 6 are the same by the workers observing outside, and the method is very convenient and intuitive.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the invention is indicated by the appended claims, rather than the foregoing description, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a hexagon head bolt, its characterized in that, includes hexagonal head (1) and screw rod (2), screw rod (2) are connected in hexagonal head (1), hexagonal head (1) upper end is equipped with the range finding dial plate, be equipped with dial plate linkage subassembly in hexagonal head (1), hexagonal head (1) lower extreme sliding connection has two thimble (3), two thimble (3) use screw rod (2) to set up as central symmetry, thimble (3) link mutually with dial plate linkage subassembly, dial plate linkage subassembly links with the range finding dial plate mutually.

2. The hexagon head bolt according to claim 1, characterized in that the dial linkage assembly comprises two sets of transmission assemblies and a first gear assembly and a second gear assembly which are symmetrically arranged, the two sets of transmission assemblies are respectively linked with the first gear assembly and the second gear assembly, the transmission assemblies comprise a shaft sleeve (7) and a transmission rod (8), the shaft sleeve (7) is rotatably connected in the hexagon head (1), a sliding groove is formed in the shaft sleeve (7), the sliding groove is in threaded connection with the ejector pin (3), the ejector pin (3) can move up and down in the sliding groove to drive the shaft sleeve (7) to rotate, and one end of the transmission rod (8) is linked with the shaft sleeve (7).

3. The hexagon head bolt according to claim 2, characterized in that the first gear assembly comprises a first gear (12) and a first gear shaft (11), the first gear shaft (11) is rotatably connected in the hexagon head (1), the first gear (12) is connected to the first gear shaft (11), the second gear assembly comprises a second gear (10) and a second gear shaft (9), the second gear shaft (9) is rotatably connected in the hexagon head (1), the second gear (10) is connected to the second gear shaft (9), and the two transmission rods (8) are respectively linked with the first gear shaft (11) and the second gear shaft (9).

4. The hexagonal-head bolt according to claim 3, wherein said distance measuring dial comprises a dial face (4) and a pointer rotating assembly, the dial face (4) is engraved with numbers, the pointer rotating assembly comprises a first pointer (5), a second pointer (6), a first rotating shaft (15), a second rotating shaft (16), a third gear (13) and a fourth gear (14), the first pointer (5) and the second pointer (6) are both positioned above the disk surface (4), the first pointer (5) is connected with a first rotating shaft (15), the first rotating shaft (15) is connected with a third gear (13), the third gear (13) is in gear joint with the first gear (12), the second pointer (6) is connected with the second rotating shaft (16), the second rotating shaft (16) is connected with a fourth gear (14), and the fourth gear (14) is in gear joint with the second gear (10).

5. The hexagon head bolt according to claim 4, wherein the first rotation shaft (15) is sleeved outside the second rotation shaft (16), the third gear (13) is located above the fourth gear (14), and the lower end of the second rotation shaft (16) passes through the third gear (13) and is connected with the fourth gear (14).

6. The hexagonal bolt according to claim 5, characterized in that the sliding groove has an internal thread, and the rear portion of the ejector pin (3) has an external thread matching the internal thread.

7. The hexagon head bolt according to claim 6, characterized in that the outside of the bushing (7) is linked with the transmission rods (8) through a first bevel gear assembly, and the two transmission rods (8) are linked with the first gear shaft (11) and the second gear shaft (9) through a second bevel gear assembly.

8. The hexagonal-head bolt according to claim 7, wherein the first bevel gear assembly and the second bevel gear assembly are each composed of two bevel gears.