A long drive tube

Abstract

The utility model provides a kind of transmission long tube, it is related to mechanical manufacturing technical field, transmission long tube's outer circle is processed with several mutually spaced ring grooves, and the convex platform is formed between every two adjacent ring grooves, transmission long tube utilizes convex platform and the transmission member with gear or hook tooth intermeshing to realize the transmission of power.The utility model structure is simple and novel, transmission long tube is driven and rotated with the gear meshing with it by reciprocating motion along the axis direction itself, or it is driven and carries out linear reciprocating motion by the claw meshing with it.The trapezoidal ring groove on long tube is mutually independent and not connected, without self-locking, with transmission efficiency high, movement speed fast, kinetic energy loss less and the like characteristics.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing technology, and more specifically, to a transmission long tube. Background Technology

[0002] In the field of long-stroke mechanical transmission, the transmission method that transforms rotary motion into linear motion by the cooperation of trapezoidal screw and nut is very common. It is characterized by strong load-bearing capacity and self-locking function, and is widely used in horizontal lathes, lifting machinery, CNC machining tools, injection molding machinery, various types of heavy-duty machinery and gantry equipment.

[0003] Traditional trapezoidal screws have continuous spiral grooves from beginning to end, and they drive the mating nut in a linear motion through their own rotation. However, trapezoidal screw drives also have some drawbacks, such as low linear speed, low mechanical efficiency, high energy loss, and strong self-locking. In certain specific applications, such as the screen-forming mechanism in screen printing plate making, the remote valve control mechanism in petrochemical systems, and the control rod drive device in fission reactors, a long-stroke drive method with high linear speed, fast transmission speed, and high efficiency is required.

[0004] In view of this, this application studies a transmission tube. Utility Model Content

[0005] The purpose of this utility model is to provide a transmission tube to solve one or more problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides a transmission tube with several spaced-apart annular grooves machined on its outer circumference. A boss is formed between every two adjacent annular grooves. The transmission tube utilizes the bosses to mesh with a transmission component having gears or hooks to transmit power. Thus, by using independent and non-connected annular grooves to achieve transmission or motion with gears or hooks, transmission efficiency and speed are greatly improved, while reducing kinetic energy loss.

[0007] As a preferred embodiment, the cross-section of the annular groove is an inverted trapezoidal structure, and a trapezoidal boss of a regular trapezoidal structure is formed between two adjacent inverted trapezoidal structures. The upper side of the inverted trapezoidal structure is longer and the lower side is shorter, and the lower side of the inverted trapezoidal structure is the bottom of the annular groove.

[0008] As a preferred embodiment, the transmission tube is a slender hollow round tube with a central through hole structure. The length of the transmission tube is greater than 2 meters, the outer diameter D of the transmission tube is 20~50 mm, the length-to-diameter ratio of the transmission tube is greater than 60 times, the inner diameter d of the transmission tube is 10~30 mm, and the wall thickness s of the transmission tube is not less than 5 mm.

[0009] As a preferred embodiment, the cross-section of the annular groove is an isosceles trapezoid, with the axis of symmetry of the isosceles trapezoid perpendicular to the centerline of the transmission tube. The angle between the waist and the height of the isosceles trapezoid is α, and the range of α is 30° to 60°.

[0010] As a preferred embodiment, the cross-section of the trapezoidal boss is also an isosceles trapezoid, and the axis of symmetry of the isosceles trapezoid of the trapezoidal boss cross-section is perpendicular to the center line of the transmission tube. The angle between the leg of the isosceles trapezoid and the base of the regular trapezoidal structure is β, and the range of β is 30°~60°. The relationship between angle α and angle β is: ∠α+∠β=90°.

[0011] As a preferred method, the spacing P between every two adjacent trapezoidal annular grooves on the transmission tube is the same, and the value of P ranges from 5 to 20 mm.

[0012] As a preferred feasible method, the transmission tube is made of stainless steel, which has a room temperature tensile strength Rm greater than 400 MPa and a yield strength Rp. 0.2 Greater than 300 MPa, elongation greater than 10%, Rockwell hardness greater than 12.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. Each trapezoidal annular groove on the transmission tube of this utility model is independent and not connected to each other, and does not have self-locking properties. It has the characteristics of high transmission efficiency, fast movement speed and low kinetic energy loss.

[0014] 2. The trapezoidal annular groove long tube of this utility model cannot transmit any motion by rotating along its own axis. Instead, it drives the gear meshing with it to rotate by reciprocating along its own axis, or it is driven by the teeth and claws meshing with it to perform linear reciprocating motion. Attached Figure Description

[0015] Figure 1 A schematic diagram of the cross-sectional structure of a transmission tube provided by this utility model; Figure 2 This is a partial schematic diagram of the cross-sectional structure of a transmission tube provided by this utility model. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] It should be noted that all uses of "first", "second", "third" and "fourth" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first", "second", "third" and "fourth" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0018] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0019] like Figure 1-2 As shown, this utility model provides a transmission tube made of stainless steel. The transmission tube is a slender, hollow circular tube with a central through-hole structure. Here, it is a slender circular steel tube. Several mutually spaced trapezoidal annular grooves 1 are machined on the outer circumference of the transmission tube. A boss 2 is formed between every two adjacent annular grooves 1. The annular groove 1 is a trapezoidal groove, and the boss 2 is a trapezoidal boss. The transmission tube utilizes the boss 2 to mesh with a transmission component having gears or hook teeth to achieve power transmission. It should be noted that the cross-section of the annular groove is an inverted trapezoidal structure. A trapezoidal boss of a regular trapezoidal structure is formed between two adjacent inverted trapezoidal structures. The upper side of the inverted trapezoidal structure is longer than the lower side, and the lower side of the inverted trapezoidal structure is the bottom of the annular groove. The upper side of the trapezoidal boss of the regular trapezoidal structure is shorter than the lower side.

[0020] It should be noted that, such as Figure 1 As shown, the length of the transmission tube should be greater than 2 meters, the outer diameter D of the transmission tube should range from 20 to 50 millimeters, the length-to-diameter ratio of the transmission tube should be greater than 60, the inner diameter d of the transmission tube should range from 10 to 30 millimeters, and the wall thickness s of the transmission tube should not be less than 5 millimeters. Therefore, the above dimensional settings further ensure effective transmission through the transmission tube, greatly improving transmission efficiency, increasing movement speed, and further reducing kinetic energy loss.

[0021] like Figure 1-2As shown, the cross-section of the annular groove is an isosceles trapezoid. The axis of symmetry of the isosceles trapezoid in the cross-section of the annular groove is perpendicular to the centerline of the transmission tube. The angle between the leg and the height of the isosceles trapezoid is α, and α ranges from 30° to 60°. The height h of the trapezoid is the depth of the annular groove, which is also the height of the boss. The cross-section of the trapezoidal boss is also an isosceles trapezoid. The axis of symmetry of the isosceles trapezoid in the cross-section of the trapezoidal boss is also perpendicular to the centerline of the transmission tube. The angle between the leg and the base of the regular trapezoidal structure is β, and β ranges from 30° to 60°. The relationship between angle α and angle β is: ∠α + ∠β = 90°. It should be noted that the size of angle α has a direct impact on the load-bearing capacity and transmission efficiency of the annular groove transmission tube. The larger the angle α, the smaller the load-bearing capacity. Preferably, when the angle α is 40° to 50°, the transmission efficiency of the transmission tube is better.

[0022] To further clarify, the spacing P between every two adjacent trapezoidal annular grooves on the transmission tube is the same, and the value of P ranges from 5 to 20 millimeters. For example... Figure 1-2 As shown, the spacing value P is both the spacing between every two adjacent trapezoidal annular grooves and the spacing between every two adjacent trapezoidal bosses.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A transmission tube, characterized in that, The outer circumference of the transmission tube is machined with several mutually spaced annular grooves (1), and a boss (2) is formed between every two adjacent annular grooves (1). The transmission tube uses the boss (2) to mesh with a transmission component with gear or hook-tooth type parts to realize the transmission of power. The cross-section of the annular groove is an inverted trapezoidal structure. A trapezoidal boss of a regular trapezoidal structure is formed between two adjacent inverted trapezoidal structures. The upper side of the inverted trapezoidal structure is longer and the lower side is shorter, and the lower side of the inverted trapezoidal structure is the bottom of the annular groove.

2. The transmission tube according to claim 1, characterized in that: The transmission tube is a slender hollow round tube with a central through hole structure. The length of the transmission tube is greater than 2 meters, the outer diameter D of the transmission tube is 20-50 mm, the length-to-diameter ratio of the transmission tube is greater than 60 times, the inner diameter d of the transmission tube is 10-30 mm, and the wall thickness s of the transmission tube is not less than 5 mm.

3. A transmission tube according to claim 1, characterized in that: The cross-section of the annular groove is an isosceles trapezoid, and the axis of symmetry of the isosceles trapezoid of the annular groove cross-section is perpendicular to the center line of the transmission tube. The angle between the waist and the height of the isosceles trapezoid is α, and the range of α is 30°~60°.

4. A transmission tube according to claim 3, characterized in that: The cross-section of the trapezoidal boss is also an isosceles trapezoid, and the axis of symmetry of the isosceles trapezoid of the trapezoidal boss cross-section is perpendicular to the center line of the transmission tube. The angle between the waist of the isosceles trapezoid and the base of the regular trapezoidal structure is β, and the range of β is 30°~60°. The relationship between angle α and angle β is: ∠α+∠β=90°.

5. A transmission tube according to claim 1, characterized in that: The spacing P between every two adjacent trapezoidal annular grooves on the transmission tube is the same, and the value of P ranges from 5 to 20 mm.

6. A transmission tube according to claim 3, characterized in that: The transmission tube is made of stainless steel, and the room temperature tensile strength Rm of this stainless steel is greater than 400 MPa and the yield strength Rp is greater than 400 MPa. 0.2 Greater than 300 MPa, elongation greater than 10%, Rockwell hardness greater than 12.

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