CN213628441U

CN213628441U - Special high strength fastening bolt of tower crane

Info

Publication number: CN213628441U
Application number: CN202022040857.XU
Authority: CN
Inventors: 崔彪
Original assignee: Yangzhou Yaxin Fastener Industry Co ltd
Current assignee: Yangzhou Yaxin Fastener Industry Co ltd
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2021-07-06
Anticipated expiration: 2030-09-17

Abstract

The utility model relates to the technical field of bolts, and a special high strength fastening bolt of tower crane is disclosed, including tieing head and peg, the bottom fixed connection of peg and tieing head, threaded connection has the nut under the pole wall of peg, the rotation groove has been seted up at the top of tieing head, the cavity has been seted up to the pole wall inside of peg, the internal surface bottom in rotation groove rotates through rolling bearing and is connected with the screw rod, the pole wall lower extreme of screw rod passes the peg and extends to in the cavity, the through-hole has all been seted up to the both sides lower extreme of cavity and the below that is located the nut, the inside lower extreme transverse fixation of cavity is equipped with the slide bar, the pole wall of slide bar is equipped with and removes stop gear, the spout has all been seted up to the internal surface both sides of cavity, the pole wall of screw rod is equipped with pushing mechanism, two fixed. The utility model discloses can confirm and fasten the hookup location of nut and bolt.

Description

Special high strength fastening bolt of tower crane

Technical Field

The utility model relates to a bolt technical field especially relates to a special high strength fastening bolt of tower crane.

Background

The bolt is a common mechanical part and is also a cylindrical threaded fastener matched with a nut, and the bolt is widely used in areas such as living buildings and the like as the most common fastener.

The bolt plays a key role as necessary fastener in the construction and building process of the tower crane, and is generally matched with the nut, but the existing bolt can generate a thread slipping phenomenon or a tooth breaking phenomenon due to force application or other factors in the using process, so that the nut cannot be tightly matched with the bolt, and the using effect of the bolt is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the bolt produces phenomena such as smooth silk easily when using among the prior art, lead to the nut can't produce the problem of closely cooperating with the bolt, and the special high strength fastening bolt of tower crane who provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a special high-strength fastening bolt for a tower crane comprises a bolt head and a bolt rod, wherein the bolt rod is fixedly connected with the bottom of the bolt head, the lower end of the rod wall of the bolt rod is connected with a screw cap in a threaded manner, the top of the bolt head is provided with a rotating groove, a cavity is arranged in the rod wall of the bolt rod, the bottom of the inner surface of the rotating groove is rotationally connected with a screw rod through a rotating bearing, the lower end of the rod wall of the screw rod penetrates through the bolt rod and extends into the cavity, the lower ends of the two sides of the cavity and the lower part of the screw cap are both provided with through holes, a sliding rod is transversely and fixedly arranged at the lower end in the cavity, a moving limiting mechanism is arranged on the rod wall of the sliding rod, the two sides of the inner surface of the cavity are both provided with sliding chutes, the rod wall of the screw rod is provided with a pushing mechanism, two symmetrical fixing plates are fixedly arranged on the left side of the top of the bolt head, and a protection mechanism is arranged between the two fixing plates.

Preferably, it includes two first wedges, two to remove stop gear first wedge is connected with the pole wall contact of slide bar, and the bottom is connected with the internal surface bottom contact of cavity, two the lateral wall of first wedge all is fixed and is equipped with the stopper, the other end of stopper passes the through-hole and is located the below of nut, the spring has all been cup jointed at the both ends of slide bar, the both ends of spring respectively with first wedge and cavity fixed connection.

Preferably, pushing mechanism includes the slider, slider and the pole wall threaded connection of screw rod, and both ends all fix and are equipped with the movable block, the opposite side of movable block and the cell wall contact of spout are connected, the top both ends of slider all fix and are equipped with the connecting rod, two the top of connecting rod is fixed jointly and is equipped with the second wedge, the second wedge is located the top of two first wedges, the second wedge cup joints with the pole wall slip of screw rod.

Preferably, protection machanism includes the bull stick, two the circular slot has all been seted up to the lateral wall of fixed plate, the pole wall both ends of bull stick are connected with the cell wall contact of two circular slots respectively, the fixed block that has cup jointed of pole wall of bull stick, the fixed baffle that is equipped with in right side of fixed plate, the baffle is located the top in rotation groove, torque spring has all been cup jointed at the pole wall both ends of bull stick, torque spring's both ends respectively with fixed block and fixed plate fixed connection.

Preferably, a rotating block is fixedly arranged at the top of the rod wall of the screw rod.

Preferably, the bolt head and the bolt rod are made of low-carbon alloy steel.

Compared with the prior art, the utility model provides a special high strength fastening bolt of tower crane possesses following beneficial effect:

1. this special high strength fastening bolt of tower crane through the screw rod that is equipped with, pushing mechanism and removal stop gear, with the nut with the stopper ejecting and with the bottom contact of nut after the bolt-bar cooperation, confirms the position of nut, thereby prevent that the bolt from producing smooth silk and nut production and being connected not hard up.

2. This special high strength fastening bolt of tower crane through the protection machanism who is equipped with, protects the turning block, thereby prevents that the turning block from receiving the unexpected rotation and making the position of stopper receive the influence.

The part that does not relate to among the device all is the same with prior art or can adopt prior art to realize, the utility model discloses simple structure can confirm and fasten the hookup location of nut and bolt, when preventing that bolt and bolted connection from producing the smooth silk and breaking the tooth, the bolt can't carry out effectual firm with the bolt and be connected.

Drawings

FIG. 1 is a schematic structural view of a high-strength fastening bolt dedicated for a tower crane according to the present invention;

FIG. 2 is a schematic top view of the structure of FIG. 1;

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

fig. 4 is an enlarged view of a portion B in fig. 2.

In the figure: the device comprises a bolt head 1, a bolt rod 2, a nut 3, a screw rod 4, a slide rod 5, a fixing plate 6, a first wedge-shaped block 7, a limiting block 8, a spring 9, a slide block 10, a moving block 11, a connecting rod 12, a second wedge-shaped block 13, a rotating rod 14, a fixing block 15, a baffle 16, a torsion spring 17 and a rotating block 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-4, a special high-strength fastening bolt for a tower crane, comprising a bolt head 1 and a bolt rod 2, wherein the bolt rod 2 is fixedly connected with the bottom of the bolt head 1, the lower end of the rod wall of the bolt rod 2 is in threaded connection with a nut 3, the top of the bolt head 1 is provided with a rotating groove, the rotating groove is arranged to facilitate subsequent rotation of a rotating block 18, a cavity is arranged inside the rod wall of the bolt rod 2, the bottom of the inner surface of the rotating groove is rotatably connected with a screw rod 4 through a rotating bearing, the lower end of the rod wall of the screw rod 4 penetrates through the bolt rod 2 and extends into the cavity, through holes are arranged at the lower ends of two sides of the cavity and below the nut 3, a slide rod 5 is transversely fixed at the lower end of the inner part of the cavity, the rod wall of the slide rod 5 is provided with a movement limiting mechanism, sliding grooves are arranged at two sides of the inner, a protection mechanism is arranged between the two fixing plates 6.

Remove stop gear includes two first wedges 7, two first wedges 7 are connected with the pole wall contact of slide bar 5, and the bottom is connected with the internal surface bottom contact of cavity, internal surface bottom contact to the cavity through first wedge 7, it is spacing to the removal of first wedge 7, the lateral wall of two first wedges 7 is all fixed and is equipped with stopper 8, the other end of stopper 8 passes the through-hole and is located the below of nut 3, spring 9 has all been cup jointed at the both ends of slide bar 5, spring 9's both ends respectively with first wedge 7 and cavity fixed connection.

Pushing mechanism includes slider 10, slider 10 and screw rod 4's pole wall threaded connection, and both ends all fix and are equipped with movable block 11, the opposite side of movable block 11 is connected with the cell wall contact of spout, it is spacing to set up movable block 11 and spout and carry out slider 10's removal, slider 10's top both ends all fix and are equipped with connecting rod 12, the common fixed second wedge 13 that is equipped with in top of two connecting rod 12, second wedge 13 is located the top of two first wedges 7, second wedge 13 cup joints with screw rod 4's pole wall slip, the inclined plane of second wedge 13 can contact with the inclined plane of two first wedges 7.

Protection machanism includes bull stick 14, the circular slot has all been seted up to the lateral wall of two fixed plates 6, the pole wall both ends of bull stick 14 are connected with the cell wall contact of two circular slots respectively, the fixed block 15 that has cup jointed of pole wall of bull stick 14, the fixed baffle 16 that is equipped with in right side of fixed plate 6, it blocks to turning block 18 to set up baffle 16, prevent to receive turning block 18 and receive unexpected rotation, baffle 16 is located the top in rotating the slot, torque spring 17 has all been cup jointed at the pole wall both ends of bull stick 14, torque spring 17's both ends respectively with fixed block 15 and fixed plate 6 fixed connection, the fixed turning block 18 that is equipped with in pole wall top of screw rod 4, it is convenient for rotate screw rod 4 to set up turning block 18, tiehead 1 and tiebar 2 all adopt low carbon alloy steel.

In the utility model, when the bolt is used, after the bolt 2 is matched with the nut 3, the rotating baffle 16 makes the rotating rod 14 drive the torsion spring 17 to twist, then the rotating block 18 is rotated to make the slider 10 slide downwards under the limiting action of the moving block 11 and the sliding groove, so that the second wedge block 13 moves downwards under the push of the connecting rod 12 and the slider 10 and starts to contact with the two first wedge blocks 7, in the process that the second wedge block 13 continuously moves downwards, the two first wedge blocks 7 are pushed and slide along the sliding rod 5, and simultaneously the spring 9 is compressed, when the first wedge block 7 moves, the limiting block 8 gradually passes through the through hole and is positioned below the nut 3 under the drive of the first wedge block 7, so that when the bolt 2 generates the phenomena of thread slipping and tooth breaking, the position of the nut 3 is kept inconvenient, thereby ensuring that the connection between the nut 3 and the bolt is always kept stable, thereby improving the use effect of the bolt.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a special high strength fastening bolt of tower crane, includes tieing head (1) and tieing rod (2), its characterized in that, tieing rod (2) and the bottom fixed connection of tieing head (1), the pole wall lower extreme threaded connection of tieing rod (2) has nut (3), the top of tieing head (1) has been seted up and has been rotated the groove, the inside cavity of having seted up of pole wall of tieing rod (2), the internal surface bottom of rotating the groove is rotated through rolling bearing and is connected with screw rod (4), the pole wall lower extreme of screw rod (4) passes tieing rod (2) and extends to in the cavity, the both sides lower extreme of cavity just is located the below of nut (3) and has all seted up the through-hole, the inside lower extreme of cavity transversely is fixed and is equipped with slide bar (5), the pole wall of slide bar (5) is equipped with removes stop gear, the spout has all been seted up to the internal surface both sides of cavity, the pole wall, the left side of the top of the bolt head (1) is fixedly provided with two symmetrical fixing plates (6), and a protection mechanism is arranged between the two fixing plates (6).

2. The special high-strength fastening bolt for the tower crane according to claim 1, wherein the movable limiting mechanism comprises two first wedge blocks (7), two first wedge blocks (7) are in contact connection with the rod wall of the sliding rod (5), the bottom of the first wedge blocks is in contact connection with the bottom of the inner surface of the cavity, two limiting blocks (8) are fixedly arranged on the side wall of each first wedge block (7), the other end of each limiting block (8) penetrates through the through hole and is located below the nut (3), springs (9) are sleeved at the two ends of each sliding rod (5), and the two ends of each spring (9) are respectively in fixed connection with the first wedge blocks (7) and the cavity.

3. The special high-strength fastening bolt for the tower crane according to claim 1, wherein the pushing mechanism comprises a sliding block (10), the sliding block (10) is in threaded connection with a rod wall of the screw (4), moving blocks (11) are fixedly arranged at two ends of the sliding block, the other side of each moving block (11) is in contact connection with a groove wall of the sliding groove, connecting rods (12) are fixedly arranged at two ends of the top of the sliding block (10), a second wedge block (13) is fixedly arranged at the tops of the two connecting rods (12) together, the second wedge block (13) is located above the two first wedge blocks (7), and the second wedge block (13) is in sliding sleeve connection with the rod wall of the screw (4).

4. The special high-strength fastening bolt for the tower crane according to claim 1, wherein the protection mechanism comprises a rotating rod (14), circular grooves are formed in the side walls of the fixing plates (6), two ends of the rod wall of the rotating rod (14) are respectively in contact with the groove walls of the two circular grooves, a fixing block (15) is fixedly sleeved on the rod wall of the rotating rod (14), a baffle (16) is fixedly arranged on the right side of the fixing plate (6), the baffle (16) is located above the rotating grooves, a torsion spring (17) is sleeved on two ends of the rod wall of the rotating rod (14), and two ends of the torsion spring (17) are respectively in fixed connection with the fixing block (15) and the fixing plate (6).

5. The special high-strength fastening bolt for the tower crane according to claim 1, wherein a rotating block (18) is fixedly arranged at the top of the rod wall of the screw rod (4).

6. The high-strength fastening bolt special for the tower crane according to claim 1, wherein the bolt head (1) and the bolt rod (2) are both made of low-carbon alloy steel.