CN211398247U

CN211398247U - High-strength connecting pin shaft of tower crane

Info

Publication number: CN211398247U
Application number: CN201922403690.6U
Authority: CN
Inventors: 梁季
Original assignee: Liangjiang Suzhou Mechanical Equipment Co ltd
Current assignee: Liangjiang Suzhou Mechanical Equipment Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-09-01
Anticipated expiration: 2029-12-27

Abstract

The utility model belongs to the field of fasteners, and particularly discloses a high-strength connecting pin shaft of a tower crane, which comprises a pin shaft head (100) and a pin shaft body (200) from top to bottom; the pin shaft head (100) comprises a first pin shaft head (110) and a second pin shaft head (120); the first pin shaft head (110) is positioned at the upper part of the second pin shaft head (120), the first pin shaft head (110) is fixedly connected with the second pin shaft head (120), and the outer diameter of the first pin shaft head (110) is smaller than that of the second pin shaft head (120); a pin shaft head groove (101) is longitudinally formed in each side surface of the first pin shaft head (110) and the second pin shaft head (120); the utility model discloses a tower crane connecting pin axle intensity is high, connects the fastening and is difficult for droing.

Description

High-strength connecting pin shaft of tower crane

Technical Field

The utility model belongs to the fastener field specifically discloses a tower crane connecting pin axle of high strength.

Background

The pin shaft is a standard fastener, can be statically and fixedly connected, can also move relative to a connected piece, and is mainly used at the hinged position of two parts to form a hinged connection. The pin shaft is usually locked by a cotter pin, and has reliable work and convenient disassembly.

The pin shaft connection is a common connection mode for movable parts of various large-scale mechanical equipment, particularly large-scale cranes and the like. The main stressed member of round pin hub connection is the round pin axle body, and traditional tower crane's connecting pin axle uses the several back tip can only change because bearing a burden atress or dismantle to strike and lead to the round pin axle to warp the back unable use, when wasting time and energy, also increased the cost, also caused the potential safety hazard simultaneously, consequently urgently needed a tower crane's that intensity is higher connecting pin axle.

SUMMERY OF THE UTILITY MODEL

Not enough more than, the utility model discloses a tower crane connecting pin axle of high strength, intensity is high, connects the fastening and is difficult for droing.

The technical scheme of the utility model as follows:

a high-strength connecting pin shaft of a tower crane is characterized by comprising a pin shaft head and a pin shaft body from top to bottom; the pin shaft heads comprise a first pin shaft head and a second pin shaft head; the first pin shaft head is positioned at the upper part of the second pin shaft head, the first pin shaft head is fixedly connected with the second pin shaft head, and the outer diameter of the first pin shaft head is smaller than that of the second pin shaft head; a pin shaft head groove is longitudinally formed in each side surface of the first pin shaft head and the second pin shaft head; the pin shaft body is fixedly connected below the second pin shaft head; the pin shaft body is provided with a pin shaft threaded area and a pin shaft smooth area from top to bottom; the length ratio of the pin shaft threaded area to the pin shaft smooth area is 1:2-1: 10; the tail end of the pin shaft smooth area is provided with a pin shaft through hole, and the diameter of the pin shaft through hole is 1/4-1/2 of the diameter of the pin shaft smooth area. When the connecting device is used, the smooth area of the pin shaft body penetrates through a first workpiece and a second workpiece to be connected, the fastener is inserted into the pin shaft through hole, and the two workpieces are positioned through the fastener and the pin shaft head; optionally, after the smooth region of the pin shaft body penetrates through the first workpiece and the second workpiece to be connected, the pin shaft threaded region is in threaded connection with the first workpiece, fasteners such as bolts are inserted into the pin shaft through holes, and the two workpieces are positioned through the fasteners, the pin shaft heads and the pin shaft threaded region. The pin heads with two different outer diameters can be matched with wrenches with different sizes, and screwing and unscrewing are more convenient. The groove is formed in the side of the pin shaft head, so that stress can be relieved, deformation caused by expansion with heat and contraction with cold can be resisted, and strength is improved.

Furthermore, the first pin head and the second pin head are hexagonal. The hexagonal wrench head is most commonly used and has good universality.

Further, above-mentioned tower crane connecting pin axle of high strength, No. one the round pin spindle nose is cavity, and its cavity part is equipped with hexagon socket head cap bolt head. The hexagonal bolt head is arranged inside, the hexagonal bolt head inside can be used in an emergency under the condition that the pin shaft head is deformed, and the flexibility of the pin shaft is improved.

Furthermore, the width of the groove of the pin head of the high-strength tower crane is 1/3-2/3 of the width of the surface where the groove is located; the depth of the pin head groove is 1/10-1/4 of the outer diameter of the pin head; the pin head groove is 1/2-1 of the height of the pin head.

Furthermore, according to the high-strength connecting pin shaft for the tower crane, a pin shaft body groove is longitudinally formed in the pin shaft smooth area. The pin shaft body is provided with the groove, so that the strength can be improved, the deformation caused by expansion with heat and contraction with cold can be resisted, and the strength is improved.

Furthermore, according to the high-strength connecting pin shaft for the tower crane, the shaft pin body grooves are uniformly arranged around the circumference of the pin shaft smooth area, and the number of the shaft pin body grooves is 2-6.

Furthermore, the high-strength tower crane connecting pin shaft is characterized in that a guide ball head is arranged at the tail end of the pin shaft body. And the pin shaft is inserted into the workpiece to be smoother by using the wire ball head.

Furthermore, the connecting pin shaft of the high-strength tower crane is integrally formed.

Furthermore, the material of the connecting pin shaft of the high-strength tower crane is 35CrMnSi steel. The 35CrMnSi steel is low-alloy ultrahigh-strength steel, has good comprehensive mechanical properties, high strength, enough toughness, hardenability, weldability and processability after heat treatment, can obtain the comprehensive mechanical properties with good strength, hardness, toughness and fatigue strength after proper heat treatment, and can adapt to more complex working conditions such as cranes and the like.

Furthermore, the high-strength tower crane connecting pin shaft is provided with a rectangular notch on the pin shaft through hole. Set up the rectangle breach, can insert the protruding bolt fastening of rectangle that has, the security is better.

Can reach from above-mentioned technical scheme, the utility model discloses following beneficial effect has: the utility model discloses a high-strength tower crane connecting pin shaft, which is skillfully designed, and grooves are arranged at the side of the pin shaft head and on the pin shaft body, so that the stress can be relieved, the deformation caused by expansion with heat and contraction with cold can be resisted, and the strength is improved; meanwhile, the pin shaft uses two pin shaft heads with different outer diameters, so that the pin shaft can be adapted to wrenches with different sizes, and the screwing and unscrewing are more convenient; furthermore, the hexagonal bolt head is arranged inside the pin shaft, so that the hexagonal bolt head inside the pin shaft can be used in an emergency under the condition that the pin shaft head is deformed, and the flexibility of the pin shaft in use is improved.

Drawings

FIG. 1 is a schematic view of a high-strength connecting pin of a tower crane in example 1;

FIG. 2 is a schematic view of a high-strength connecting pin of the tower crane in embodiment 2;

FIG. 3 is a top view of a high-strength connecting pin of the tower crane according to embodiments 1-2;

wherein: the guide ball comprises a 100 pin head, a 200 pin body, a 101 pin head groove, a 110 first pin head, a 120 second pin head, a 210 pin thread area, a 220 pin smooth area, a 300 pin through hole, a 221 pin body groove and a 222 guide ball head.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" 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 to simplify the description, but do not indicate or imply that the device or element 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.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example 1

The high-strength connecting pin shaft for the tower crane shown in fig. 1 and 3 comprises a pin shaft head 100 and a pin shaft body 200 from top to bottom; the pin head 100 comprises a first pin head 110 and a second pin head 120; the first pin shaft head 110 is positioned at the upper part of the second pin shaft head 120, the first pin shaft head 110 is fixedly connected with the second pin shaft head 120, and the outer diameter of the first pin shaft head 110 is smaller than that of the second pin shaft head 120; a pin head groove 101 is longitudinally formed in each side surface of the first pin head 110 and the second pin head 120; the pin shaft body 200 is fixedly connected below the second pin shaft head 120; the pin body 200 is provided with a pin thread area 210 and a pin smooth area 220 from top to bottom; the length ratio of the pin shaft threaded area 210 to the pin shaft smooth area 220 is 1: 2; a pin shaft through hole 300 is formed in the tail end of the pin shaft smooth area 220, and the diameter of the pin shaft through hole 300 is 1/4 the diameter of the pin shaft smooth area 220; the width of the stud head groove 101 is 2/3 the width of the surface on which the stud head groove is located; the depth of the pin head groove 101 is 1/4 of the outer diameter of the pin head; the height of the pin head groove 101 is equal to that of the pin head.

When in use: after the smooth area 220 of the pin body 200 passes through the first and second workpieces to be connected, a fastener is inserted into the pin shaft through hole 300, and the two workpieces are positioned through the fastener and the pin shaft head 100; optionally, after the smooth region 220 of the pin body 200 passes through the first and second workpieces to be connected, the pin thread region 210 is spirally connected to the first workpiece, a fastening member such as a pin is inserted into the pin through hole 300, and the two workpieces are positioned by the fastening member, the pin head 100, and the pin thread region 210.

Example 2

The high-strength connecting pin shaft of the tower crane shown in fig. 2 comprises a pin shaft head 100 and a pin shaft body 200 from top to bottom; the pin head 100 comprises a first pin head 110 and a second pin head 120; the first pin shaft head 110 is positioned at the upper part of the second pin shaft head 120, the first pin shaft head 110 is fixedly connected with the second pin shaft head 120, and the outer diameter of the first pin shaft head 110 is smaller than that of the second pin shaft head 120; a pin head groove 101 is longitudinally formed in each side surface of the first pin head 110 and the second pin head 120; the pin shaft body 200 is fixedly connected below the second pin shaft head 120; the pin body 200 is provided with a pin thread area 210 and a pin smooth area 220 from top to bottom; the length ratio of the pin shaft threaded area 210 to the pin shaft smooth area 220 is 1: 10; a pin shaft through hole 300 is formed in the tail end of the pin shaft smooth area 220, and the diameter of the pin shaft through hole 300 is 1/2 the diameter of the pin shaft smooth area 220; particularly, the first pin head 110 and the second pin head 120 are hexagonal; further, the first pin head 110 is hollow, and a hexagon socket head 130 is arranged in the hollow part; preferably, the width of the stud head groove 101 is 1/3 the width of the surface on which it is located; the depth of the pin head groove 101 is 1/10 of the outer diameter of the pin head; the pin head groove 101 is 1/2 at the height of the pin head; particularly, 4 shaft pin body grooves 221 are longitudinally formed in the pin shaft smooth area 220; preferably, a guide ball head 222 is arranged at the tail end of the pin shaft body 200; furthermore, the connecting pin shaft is integrally formed and is made of 35CrMnSi steel; preferably, the pin shaft through hole 300 is provided with a rectangular notch 301.

When in work: after the smooth area 220 of the pin body 200 passes through the first and second workpieces to be connected, a fastener is inserted into the pin shaft through hole 300, and the two workpieces are positioned through the fastener and the pin shaft head 100; optionally, after the smooth region 220 of the pin body 200 passes through the first and second workpieces to be connected, the pin thread region 210 is spirally connected with the first workpiece, a plug pin with a rectangular protrusion is inserted into the pin through hole 300, and the two workpieces are positioned by the plug pin, the pin head 100 and the pin thread region 210.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention can not be limited thereby, and the simple equivalent changes and modifications made according to the claims and the utility model also belong to the protection scope of the present invention.

Claims

1. A high-strength connecting pin shaft of a tower crane is characterized by comprising a pin shaft head (100) and a pin shaft body (200) from top to bottom; the pin shaft head (100) comprises a first pin shaft head (110) and a second pin shaft head (120); the first pin shaft head (110) is positioned at the upper part of the second pin shaft head (120), the first pin shaft head (110) is fixedly connected with the second pin shaft head (120), and the outer diameter of the first pin shaft head (110) is smaller than that of the second pin shaft head (120); a pin shaft head groove (101) is longitudinally formed in each side surface of the first pin shaft head (110) and the second pin shaft head (120); the pin shaft body (200) is fixedly connected below the second pin shaft head (120); the pin body (200) is provided with a pin shaft threaded area (210) and a pin shaft smooth area (220) from top to bottom; the length ratio of the pin shaft threaded area (210) to the pin shaft smooth area (220) is 1:2-1: 10; the tail end of the pin shaft smooth area (220) is provided with a pin shaft through hole (300), and the diameter of the pin shaft through hole (300) is 1/4-1/2 of the diameter of the pin shaft smooth area (220).

2. The high-strength connecting pin shaft for the tower crane according to claim 1, wherein the first pin shaft head (110) and the second pin shaft head (120) are hexagonal.

3. A high strength tower crane connecting pin according to claim 2, wherein the first pin head (110) is hollow, and the hollow portion is provided with a hexagon socket head (130).

4. A high strength tower crane connecting pin according to claim 3, wherein the width of the pin head groove (101) is 1/3-2/3 of the width of the surface on which it is located; the depth of the pin head groove (101) is 1/10-1/4 of the outer diameter of the pin head; the pin head groove (101) is 1/2-1 of the height of the pin head.

5. The high-strength tower crane connecting pin shaft according to claim 1, wherein a pin shaft body groove (221) is longitudinally formed in the pin shaft smooth region (220).

6. A high strength tower crane connecting pin according to claim 5, wherein the pin body grooves (221) are uniformly arranged around the circumference of the pin smooth zone (220), and the number of the pin body grooves (221) is 2-6.

7. The high-strength tower crane connecting pin shaft of claim 1, wherein a guide ball head (222) is arranged at the end of the pin shaft body (200).

8. A high strength tower crane connecting pin according to claim 1, wherein said connecting pin is integrally formed.

9. The high-strength tower crane connecting pin shaft of claim 8, wherein the connecting pin shaft is made of 35CrMnSi steel.

10. The high-strength tower crane connecting pin shaft according to claim 1, wherein a rectangular notch (301) is formed in the pin shaft through hole (300).