CN210265767U

CN210265767U - Stepped worm shaft

Info

Publication number: CN210265767U
Application number: CN201920605820.1U
Authority: CN
Inventors: 厉建华
Original assignee: Ningbo Newstar Precision Machinery Co Ltd
Current assignee: Ningbo Newstar Precision Machinery Co Ltd
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2020-04-07
Anticipated expiration: 2029-04-29

Abstract

The utility model discloses a stepped worm shaft, which comprises a main shaft, wherein a spiral worm is arranged on the main shaft, extension shafts are arranged at two ends of the main shaft, circular radiating fins are fixedly arranged on the extension shafts at two sides of the main shaft, a connecting shaft is arranged at one end of the extension shaft above the main shaft, the connecting shaft is provided with an installation shaft at one end of the extension shaft, a mounting plate is fixedly arranged on the installation shaft, a plurality of groups of first connecting rods are arranged on the mounting plate through arranging through holes, one end of each group of first connecting rods passes through the mounting plate, a reset spring is arranged at the outer side of the upper end of each first connecting rod, the end of each reset spring is in surface contact with the mounting plate, an air bag is arranged at the outer side of the lower end of each first connecting rod, the first connecting rods are provided with arc-shaped, the heat dissipation device has the heat dissipation function, has a good heat dissipation effect, can work at constant temperature, and is suitable for wide application.

Description

Stepped worm shaft

Technical Field

The utility model relates to the field of machinary, specifically be a ladder worm axle.

Background

The worm shaft is an important part forming machinery, is one of typical parts common in machining, supports a rotating part to rotate and transmit torque, is connected with a machine frame of a machine through a bearing, is a rotating part, is longer than the diameter, consists of an outer cylindrical surface, a conical surface, an inner hole, threads and corresponding end surfaces, and comprises a common worm shaft, a stepped worm shaft and the like.

At present, a stepped worm shaft is widely applied due to good transmission effect, but the heat dissipation of the existing stepped worm shaft during continuous operation can only be realized by an external device, a good heat dissipation method is not available, so that the stepped worm shaft has a heat dissipation function, and when the worm shaft needs to be kept at a certain temperature, the stepped worm shaft cannot automatically adjust the heat dissipation power so as to keep the certain temperature on the worm shaft.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ladder worm axle to solve ladder worm axle self when continuous operation and do not possess the heat dissipation function, and when need keep the worm axle to have the uniform temperature, can't make its automatically regulated radiating power's problem.

In order to achieve the above object, the utility model provides a following technical scheme: a stepped worm shaft comprises a main shaft, wherein a spiral worm is arranged on the main shaft, extension shafts are arranged at two ends of the main shaft, circular radiating fins are fixedly arranged on the extension shafts at two sides of the main shaft, a connecting shaft is arranged at one end, away from the main shaft, of the extension shaft above the main shaft, an installation shaft is arranged at one end, away from the extension shaft, of the connecting shaft, a mounting plate is fixedly arranged on the installation shaft, a plurality of groups of first connecting rods are installed on the mounting plate through arranging through holes, one ends of the plurality of groups of first connecting rods penetrate through the mounting plate, a reset spring is installed on the outer side of the upper end of each first connecting rod, the end of each reset spring is in surface contact with the mounting plate, an air bag is installed on the outer side of the lower end of each first connecting rod, arc-shaped radiating fins are arranged, the extension shaft end department of main shaft below is provided with first step axle, the below of first step axle is provided with the second step axle.

Preferably, the diameter of the first stepped shaft is smaller than that of the extension shaft, and the diameter of the second stepped shaft is smaller than that of the first stepped shaft.

Preferably, an arc-shaped groove is formed in the spiral part of the spiral worm, and the surface of the groove is subjected to smoothing treatment.

Preferably, the air bag is made of a high-temperature resistant material.

Preferably, the arc-shaped radiating fin is attached to the spindle when moving to the spindle, and the inner side of the arc-shaped radiating fin is subjected to smoothing treatment.

Preferably, the starting position of the arc-shaped cooling fin is located between the main shaft and the mounting shaft and is not in contact with the main shaft.

The utility model provides a ladder worm axle possesses following beneficial effect:

(1) the utility model discloses a fixed two circular fin that are provided with of junction that are close to the main shaft on extending for ladder worm axle is at the continuous operation time, and the heat of production can be through heat conduction transmission to two circular fin between the metal on, makes worm axle self have the heat dissipation function at the during operation.

(2) The utility model discloses a be provided with gasbag, reset spring and arc fin, when circular fin radiating efficiency was not enough, receive the thermal energy to drive arc fin and main shaft laminating through the gasbag, strengthen heat dissipation power, when the main shaft heat dissipation reaches certain degree needs constant temperature, drive arc fin through reset spring and reset to extending between axle and the installation axle, and not be connected with the main shaft.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is an enlarged view of the point A in FIG. 1 according to the present invention;

fig. 3 is a schematic view of the installation of the first connecting rod of the present invention;

fig. 4 is a schematic view of the installation of the airbag of the present invention.

In the figure: 1. a main shaft; 2. a helical worm; 3. an extension shaft; 4. a circular heat sink; 5. a connecting shaft; 6. installing a shaft; 7. mounting a plate; 8. a first connecting rod; 9. a return spring; 10. an air bag; 11. an arc-shaped heat radiating fin; 12. a second connecting rod; 13. a first step shaft; 14. a second step axis.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-3, the utility model provides a technical solution: a stepped worm shaft comprises a main shaft 1, wherein a spiral worm 2 is arranged on the main shaft 1, extension shafts 3 are arranged at two ends of the main shaft 1, circular radiating fins 4 are fixedly arranged on the extension shafts 3 at two sides of the main shaft 1, a connecting shaft 5 is arranged at one end, away from the main shaft 1, of the extension shaft 3 above the main shaft 1, an installation shaft 6 is arranged at one end, away from the extension shaft 3, of the connecting shaft 5, an installation plate 7 is fixedly arranged on the installation shaft 6, a plurality of groups of first connecting rods 8 are installed on the installation plate 7 through holes, one ends of the plurality of groups of first connecting rods 8 penetrate through the installation plate 7, a reset spring 9 is installed on the outer side of the upper ends of the first connecting rods 8, the ends of the reset springs 9 are in surface contact with the installation plate 7, an air bag 10 is installed on the outer side of the lower ends of the first connecting, the arc-shaped radiating fins 11 are fixedly connected with the first connecting rods 8 through the second connecting rods 12, first stepped shafts 13 are arranged at the ends of the extension shafts 3 below the main shaft 1, and second stepped shafts 14 are arranged below the first stepped shafts 13.

The diameter of the first step shaft 13 is smaller than that of the extension shaft 3, and the diameter of the second step shaft 14 is smaller than that of the first step shaft 13, so that the overall transmission effect of the step worm shaft is enhanced; an arc-shaped groove is formed in the spiral part of the spiral worm 2, the surface of the groove is subjected to smoothing treatment, the transmission between the spiral worm 22 and the gear is enhanced, and the horizontal friction force between the spiral worm 22 and the gear is reduced; the air bag 10 is made of a high-temperature resistant material, so that the air bag 10 is prevented from being damaged and leaking due to high temperature; the arc-shaped radiating fins 11 are attached to the main shaft 1 when moving onto the main shaft 1, and the inner sides of the arc-shaped radiating fins 11 are subjected to smoothing treatment, so that the radiating power of the main shaft 1 is enhanced, and the friction force between the surfaces of the arc-shaped radiating fins 11 and the main shaft 1 is reduced; the starting position of the arc-shaped radiating fin 11 is located between the main shaft 1 and the mounting shaft 6 and is not in contact with the main shaft 1, and when the main shaft 1 needs to be at a constant temperature, radiating heat dissipation power is reduced.

The working principle is as follows: the utility model has the advantages that the two circular radiating fins 4 are fixedly arranged at the joint of the extension shaft 3 and the main shaft 11, when the spiral worm 2 works, the heat generated by the spiral worm 2 is transferred to the circular radiating fins 4 at two ends through the heat conductivity between metals, the whole radiating efficiency of the stepped worm shaft is accelerated, the radiating of the spiral worm 2 is stable and uniform, meanwhile, when the heat is too high, the air bag 10 is heated to expand to drive the first connecting rod 8 to slide downwards so as to drive the second connecting rod 12 to move, the arc radiating fin 11 is moved downwards to be connected with the main shaft 1 in a laminating way, the radiating power is enhanced, when the main shaft 1 radiates to a certain degree and needs constant temperature, the air bag 10 automatically contracts, at the moment, the reset spring 9 on the first connecting rod 8 can drive the second connecting rod 12 to move upwards, and then the arc radiating fin 11 is driven to move upwards between the main shaft 1, and the transmission mechanism is not connected with the main shaft 1, thereby reducing the heat dissipation power, keeping the main shaft 1 to have certain heat and completing the transmission work.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A stepped worm shaft characterized by: the novel spiral cooling device comprises a main shaft (1), wherein a spiral worm (2) is arranged on the main shaft (1), extension shafts (3) are arranged at two ends of the main shaft (1), circular cooling fins (4) are fixedly arranged on the extension shafts (3) at two sides of the main shaft (1), a connecting shaft (5) is arranged at one end, away from the main shaft (1), of the extension shaft (3) above the main shaft (1), an installation shaft (6) is arranged at one end, away from the extension shafts (3), of the connecting shaft (5), an installation plate (7) is fixedly arranged on the installation shaft (6), a plurality of groups of first connecting rods (8) are installed on the installation plate (7) through arranging through holes, one ends of the plurality of groups of first connecting rods (8) penetrate through the installation plate (7), a reset spring (9) is installed on the outer side of the upper end of each first connecting rod (8), and the end of, gasbag (10) are installed in the lower extreme outside of head rod (8), head rod (8) are provided with arc fin (11) in the below of gasbag (10), arc fin (11) are through second connecting rod (12) and head rod (8) fixed connection, extension axle (3) end department of main shaft (1) below is provided with first step axle (13), the below of first step axle (13) is provided with second step axle (14).

2. The stepped worm shaft of claim 1, wherein: the diameter of the first stepped shaft (13) is smaller than that of the extension shaft (3), and the diameter of the second stepped shaft (14) is smaller than that of the first stepped shaft (13).

3. The stepped worm shaft of claim 1, wherein: an arc-shaped groove is formed in the spiral part of the spiral worm (2), and the surface of the groove is subjected to smoothing treatment.

4. The stepped worm shaft of claim 1, wherein: the air bag (10) is made of a high-temperature-resistant material.

5. The stepped worm shaft of claim 1, wherein: the arc-shaped radiating fins (11) are attached to the main shaft (1) when moving onto the main shaft (1), and the inner sides of the arc-shaped radiating fins (11) are subjected to smoothing treatment.

6. The stepped worm shaft of claim 1, wherein: the starting position of the arc-shaped radiating fin (11) is positioned between the main shaft (1) and the mounting shaft (6) and is not in contact with the main shaft (1).