CN210799696U - Intermediate mandrel capable of having high strength and bearing high torque - Google Patents

Abstract

The utility model belongs to the technical field of oil development equipment technique and specifically relates to a can have high strength and bear middle dabber of high moment of torsion, including columniform axostylus axostyle, the axostylus axostyle outside overlaps with the axle center and is equipped with the drum, the drum is close to the inside wall of axostylus axostyle on the equidistance seted up first block spacing groove, a plurality of first block spacing groove uses the axostylus axostyle to be the circumference arrangement on the drum inside wall as. The utility model discloses a axostylus axostyle, the drum, the dabber is constituteed jointly to the intercombination of first minute power pole and second minute power pole, the device is when using, the moment of torsion that a plurality of first minute power poles and second minute power pole can disperse the dabber and receive, can improve the ability that the dabber bore the moment of torsion, axostylus axostyle and first minute power pole made by magnesium nodular cast iron, the drum that the carbon fiber drum was made, the second minute power pole that the carbon fiber pole was made all has the characteristics that intensity is high, in addition regard as the filler in gap between drum and the axostylus axostyle with the carbon steel, the intensity that can let this.

Description

Intermediate mandrel capable of having high strength and bearing high torque

Technical Field

The utility model relates to an oil development equipment technical field especially relates to a can have high strength and bear the middle dabber of high moment of torsion.

Background

The shaft is a cylindrical object which is penetrated in the middle of the bearing or the middle of the wheel or the middle of the gear, but a small part of the shaft is square. A shaft is a mechanical part that supports and rotates with a rotating part to transmit motion, torque, or bending moment. Typically in the form of a metal rod, each section may have a different diameter. The parts of the machine that rotate are mounted on the shaft. The mandrel is one type of shaft. The conventional mandrel has a single structure, so that the strength and the torque bearing capacity of the conventional mandrel are not very outstanding, and the conventional mandrel is often damaged, so that an intermediate mandrel which has high strength and can bear high torque is required to meet the requirement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art, and providing an intermediate mandrel which has high strength and bears high torque.

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

the design is an intermediate mandrel which can have high strength and bear high torque, and comprises a cylindrical shaft rod, wherein a cylinder is coaxially sleeved outside the shaft rod, first clamping limiting grooves are equidistantly formed in the inner side wall, close to the shaft rod, of the cylinder, a plurality of first clamping limiting grooves are circumferentially arranged on the inner side wall of the cylinder by taking the shaft rod as an axis, first force dividing rods corresponding to the first clamping limiting grooves are fixedly arranged on the shaft rod at equal intervals, one side, far away from the shaft rod, of each first force dividing rod is inserted into the corresponding first clamping limiting groove, a second force dividing rod is fixedly arranged on the inner side wall of the cylinder between every two adjacent first clamping limiting grooves, a second clamping limiting groove corresponding to the second force dividing rod is formed in the shaft rod between every two adjacent first force dividing rods, and one end, far away from the inner side wall of the cylinder, of each second force dividing rod is inserted into the corresponding second clamping limiting groove, the gap between the cylinder and the shaft is filled with filler.

Preferably, the shaft lever and the first force dividing rod are both made of magnesium nodular cast iron, and the shaft lever and the first force dividing rod are of an integrated structure.

Preferably, the cylinder is made of a carbon fiber cylinder, the second force dividing rod is made of a carbon fiber rod, and the cylinder and the second force dividing rod are of an integrated structure.

Preferably, the filler is carbon steel.

Preferably, both ends of the outer side wall of the cylinder are provided with threads, a wear-resistant layer is fixedly arranged on the surface of the outer side wall of the cylinder between the two threads, and the wear-resistant layer is a hard chromium wear-resistant protective layer.

The utility model provides a pair of can have high strength and bear the middle dabber of high moment of torsion, beneficial effect lies in:

1. the utility model discloses a dabber is constituteed jointly to the intercombination of axostylus axostyle, drum, first minute power pole and second minute power pole to the device is when using, and a plurality of first minute power poles and second minute power pole can disperse the moment of torsion that the dabber received, and then can improve the ability that the dabber bore the moment of torsion.

2. The utility model discloses the axostylus axostyle of making by magnesium nodular cast iron and the drum that first minute force pole, carbon fiber drum made, the second minute force pole that the carbon fiber pole was made all have the characteristics that intensity is high, in addition with the filler in the gap between as drum and the axostylus axostyle with the carbon steel, can let the intensity of this dabber obtain very big promotion.

Drawings

Fig. 1 is a schematic structural diagram of an intermediate spindle capable of having high strength and bearing high torque according to the present invention;

fig. 2 is a schematic structural diagram of a shaft rod of an intermediate spindle capable of having high strength and bearing high torque according to the present invention;

fig. 3 is a side view of an intermediate spindle, which may have high strength and withstand high torque, at a-a in fig. 1 according to the present invention.

In the figure: the shaft lever comprises a shaft lever 1, a cylinder 2, a wear-resistant layer 3, a filler 4, a first force dividing rod 5, a first clamping limiting groove 6, a second force dividing rod 7, a second clamping limiting groove 8 and threads 9.

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.

Referring to fig. 1-3, an intermediate core axle that can have high strength and bear high moment of torsion, including columniform axostylus axostyle 1, 1 outside coaxial axle center cover of axostylus axostyle is equipped with drum 2, drum 2 has seted up first block spacing groove 6 near equidistance on the inside wall of axostylus axostyle 1, a plurality of first block spacing grooves 6 use axostylus axostyle 1 to be the circumference range on 2 inside walls of drum as the axle center, axostylus axostyle 1 equidistance is fixed to be equipped with first minute force rod 5 corresponding with first block spacing groove 6, one side cartridge that axostylus axostyle 1 was kept away from to first minute force rod 5 is in first block spacing groove 6, axostylus axostyle. The nodular cast iron is spheroidized and inoculated to obtain spheroidal graphite, so that the mechanical properties of the cast iron are effectively improved, particularly, the plasticity and the toughness are improved, and the strength is higher than that of carbon steel, so that the strength of the shaft lever 1 and the first force-dividing rod 5 made of magnesium nodular cast iron can be ensured.

The utility model discloses a pivot is constituteed jointly to the mutual combination of axostylus axostyle 1, drum 2, first minute force pole 5 and second minute force pole 7, and when the device was used, a plurality of first minute force poles 5 and second minute force pole 7 can disperse the moment of torsion that the pivot received, can improve the ability that the pivot bore the moment of torsion, shaft lever 1 and first minute power pole 5, the drum 2 that the carbon fiber drum was made, the second minute power pole 7 that the carbon fiber pole was made by magnesium nodular cast iron all have the characteristics that intensity is high, in addition regard as filler 4 in the gap between drum 2 and the shaft lever 1 with the carbon steel, can let the intensity of this dabber obtain very big promotion.

All seted up screw thread 9 on 2 lateral wall both ends of drum, 2 lateral wall of drum between two screw threads 9 are fixed on the surface and are equipped with wearing layer 3, and wearing layer 3 is hard chromium wear-resistant protection layer. The installation of this dabber is made things convenient for to screw thread 9, and hard chromium wear-resisting protective layer can play the guard action to this dabber surface, improves the wear resistance on dabber surface.

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 (5)

1. The middle mandrel comprises a cylindrical shaft rod (1) and is characterized in that a cylinder (2) is sleeved outside the shaft rod (1) coaxially, first clamping limiting grooves (6) are formed in the inner side wall, close to the shaft rod (1), of the cylinder (2) at equal intervals, the first clamping limiting grooves (6) are circumferentially arranged on the inner side wall of the cylinder (2) by taking the shaft rod (1) as an axis, first force dividing rods (5) corresponding to the first clamping limiting grooves (6) are fixedly arranged on the shaft rod (1) at equal intervals, one side, far away from the shaft rod (1), of each first force dividing rod (5) is inserted into the corresponding first clamping limiting groove (6), second force dividing rods (7) are fixedly arranged on the inner side wall of the cylinder (2) between every two adjacent first clamping limiting grooves (6), and the shaft rod (1) between every two adjacent first force dividing rods (5) is provided with the corresponding second force dividing rods (7) The second clamping limiting groove (8), one end, far away from the inner side wall of the cylinder (2), of the second force dividing rod (7) is inserted into the second clamping limiting groove (8), and a gap between the cylinder (2) and the shaft rod (1) is filled with fillers (4).

2. An intermediate spindle capable of having high strength and withstanding high torques as claimed in claim 1, characterized in that the shaft rod (1) and the first force-dividing rod (5) are made of magnesium nodular cast iron, and the shaft rod (1) and the first force-dividing rod (5) are of an integrated structure.

3. An intermediate mandrel with high strength and high torque capacity as claimed in claim 1, characterized in that the cylinder (2) is made of carbon fiber cylinder, the second force-dividing rod (7) is made of carbon fiber rod, and the cylinder (2) and the second force-dividing rod (7) are integrated.

4. An intermediate mandrel with high strength and high torque capacity as claimed in claim 1, characterized in that the filler (4) is carbon steel.

5. The intermediate core shaft with high strength and high torque bearing capability as claimed in claim 1, wherein the outer side wall of the cylinder (2) is provided with threads (9) at both ends, the outer side wall surface of the cylinder (2) between the two threads (9) is fixedly provided with a wear-resistant layer (3), and the wear-resistant layer (3) is a hard chromium wear-resistant protective layer.

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