CN219013292U

CN219013292U - Worm shaft

Info

Publication number: CN219013292U
Application number: CN202223489011.XU
Authority: CN
Inventors: 温静; 李素珍
Original assignee: Jiangsu Tailong Decelerator Machinery Co Ltd
Current assignee: Jiangsu Tailong Decelerator Machinery Co Ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-05-12
Anticipated expiration: 2032-12-27

Abstract

The utility model relates to a worm shaft, which comprises a worm shaft main body section and a worm shaft connecting section, wherein the worm shaft main body section comprises a first optical axis section and a worm section, the worm section is provided with spiral teeth, one end of the worm section is fixedly connected with one end of the first optical axis section, and the other end of the first optical axis section is provided with a first half key slot; the second half key groove is formed in one end of the worm shaft connecting section, the other end of the first optical axis section is in butt joint with one end of the worm shaft connecting section, a shaft sleeve is sleeved at the butt joint position of the first optical axis section and the worm shaft connecting section, and two screw hole inner retaining screws positioned on two outer sides of the shaft sleeve in the axial direction are used for radially locking the first optical axis section and the worm shaft connecting section respectively. The worm shaft main body section and the worm shaft connecting section are detachable, if the length of the worm shaft is found to be insufficient or exceeded during installation, the worm shaft does not need to be manufactured or replaced again, and only the worm shaft main body section or the worm shaft connecting section with proper length needs to be replaced directly, so that the installation is simple, convenient and time-saving, and the cost is saved.

Description

Worm shaft

Technical Field

The utility model relates to the field of transmission devices, in particular to a worm shaft.

Background

The worm is a gear which is provided with one or a plurality of spiral teeth and is meshed with a worm wheel to form a staggered shaft gear pair, an indexing curved surface of the gear pair can be a cylindrical surface, a conical surface or a circular ring surface, the gear pair comprises four types of Archimedes worm, involute worm, normal straight profile worm and conical surface enveloping cylindrical worm, the worm transmission comprises the worm and the worm wheel and is used for transmitting motion and power between staggered shafts, the rotation is stable, the noise is small, the existing worm shaft usually adopts an integrated structure, the machining process is complex, the installation is inconvenient, when the length of the worm shaft is insufficient, the longer worm shaft is required to be searched, the assembly process is extremely complex, and when the gear pair is cracked or deformed in use, the whole worm shaft is required to be replaced, and the maintenance cost is too high.

Disclosure of Invention

The worm shaft provided by the utility model has the advantages of simple structure, convenience in processing and capability of realizing partial replacement and saving cost.

The technical scheme adopted by the utility model is as follows: a worm shaft, includes worm shaft main part section, worm shaft link, its characterized in that: the worm shaft main body section comprises a first optical axis section and a worm section, the worm section is provided with spiral teeth, one end of the worm section is fixedly connected with one end of the first optical axis section, and the other end of the first optical axis section is provided with a first half key slot; the screw shaft connecting section one end is opened there is the half keyway of second, and the first optical axis section other end is docked with the half keyway of second of worm shaft connecting section one end, and first optical axis section's half keyway of first optical axis section is docked with the half keyway of second of worm shaft connecting section and is equipped with a key in the inslot, and a axle sleeve cup joints in first optical axis section and worm shaft connecting section butt joint department, radially opens on the axle sleeve has more than two screw holes, screw hole internal rotation joint retaining screw, two screw hole internal retaining screws that are located two outsides of axle sleeve axial radially lock first optical axis section and worm shaft connecting section respectively.

Further, the upper end surface of the retaining screw is lower than the outer peripheral surface of the sleeve.

Further, a plurality of locking hole sets are uniformly distributed on the circumference of the shaft sleeve, each locking hole set comprises more than two radial screw holes, retaining screws are connected in the screw holes in a rotating mode, and the two screw hole inner retaining screws located on the two outer sides of the shaft sleeve in the axial direction radially lock the first optical axis section and the worm shaft connecting section respectively.

Further, the positions of the holes on the circumferences of the screw holes are staggered from the positions of the first half key groove and the second half key groove.

Further, the circumferential opening positions of the screw holes are perpendicular to or opposite to the positions of the first half key groove and the second half key groove.

Further, the inner wall of the shaft sleeve is provided with a shaft sleeve key groove corresponding to the cross-connection common key, and the shaft sleeve key groove is a through groove or a through groove with one side open.

Based on the scheme, the utility model has the following positive and beneficial effects:

1. when the worm shaft is longer, the worm shaft is divided into a worm shaft main body section and a worm shaft connecting section, so that the processing is easier and the product quality can be ensured;

2. the shaft sleeve and the retaining screw are arranged, so that the two parts of the worm shaft main body section and the worm shaft connecting section are detachable, when the worm shaft is found to be insufficient or exceeds the length of the worm shaft during installation, the worm shaft does not need to be manufactured again or to be searched for a proper worm shaft, and only the worm shaft main body section or the worm shaft connecting section with the proper length needs to be directly replaced, so that the installation process is simple, convenient and time-saving; when the worm shaft is cracked or deformed in the use process, the whole worm shaft is not required to be replaced, only parts can be replaced, and the cost is saved.

Drawings

Fig. 1 is a schematic diagram of a front view structure of the present utility model.

In the figure: a worm shaft main body section 1, a first optical axis section 101, a worm section 102, a first half key groove 103, a worm shaft connecting section 2, a second half key groove 201, a shaft sleeve 3, a screw hole 301, a retaining screw 4, and a common key 5.

Detailed Description

Further description is provided below with reference to the drawings and examples.

Referring to fig. 1, the present utility model provides a technical solution: a worm shaft comprises a worm shaft main body section 1, a worm shaft connecting section 2, a shaft sleeve 3, a retaining screw 4 and a common key 5. The worm shaft is divided into a worm shaft main body section and a worm shaft connecting section, so that the processing is easier and the product quality can be ensured. The first optical axis section 101 in the worm shaft main body section 1 is in butt joint with the worm shaft connecting section 2, a shaft sleeve 3 is sleeved at the butt joint position through a common key 5, a shaft sleeve key groove corresponding to the cross joint common key is formed in the inner wall of the shaft sleeve, the shaft sleeve key groove is a through groove or a through groove with one side open, more than two screw holes 301 are radially formed in the shaft sleeve, retaining screws 4 are screwed into the screw holes, two screw hole inner retaining screws located on two outer sides of the shaft sleeve in the axial direction are respectively and radially locked with the first optical axis section 101 and the worm shaft connecting section 2, and the upper end face of the retaining screw 4 is lower than the outer peripheral surface of the shaft sleeve 3. First optical axis section one end fixed connection worm section 102, the worm section is equipped with the helical tooth, first optical axis section 101 other end is opened there is first half keyway 103, worm shaft connecting section 2 one end is opened there is second half keyway 201, when first optical axis section 101 and worm shaft connecting section 2 dock, first half keyway 103 of first optical axis section dock with second half keyway 201 on the worm shaft connecting section, key 5 limit is located first half keyway and second half keyway, first, second half keyway position staggers with screw hole circumference trompil position. The shaft sleeve and the retaining screw are arranged, so that the two parts of the worm shaft main body section and the worm shaft connecting section are detachable, when the worm shaft is found to be insufficient or exceeds the length of the worm shaft during installation, the worm shaft does not need to be manufactured again or to be searched for a proper worm shaft, and only the worm shaft main body section or the worm shaft connecting section with the proper length needs to be directly replaced, so that the installation process is simple, convenient and time-saving; when the worm shaft is cracked or deformed in the use process, the whole worm shaft is not required to be replaced, only parts can be replaced, and the cost is saved.

On the basis of the embodiment, a plurality of locking hole sets can be uniformly distributed on the circumference of the shaft sleeve, each locking hole set comprises more than two radial screw holes, retaining screws are screwed in the screw holes, and the retaining screws in the two screw holes positioned on the two outer sides of the shaft sleeve in the axial direction radially lock the first optical axis section and the worm shaft respectively.

Based on the above embodiment, the circumferential opening position of the screw hole is perpendicular to or opposite to the positions of the first half key groove and the second half key groove.

Claims

1. A worm shaft, includes worm shaft main part section, worm shaft link, its characterized in that: the worm shaft main body section comprises a first optical axis section and a worm section, the worm section is provided with spiral teeth, one end of the worm section is fixedly connected with one end of the first optical axis section, and the other end of the first optical axis section is provided with a first half key slot; the screw shaft connecting section one end is opened there is the half keyway of second, and the first optical axis section other end is docked with the half keyway of second of worm shaft connecting section one end, and first optical axis section's half keyway of first optical axis section is docked with the half keyway of second of worm shaft connecting section and is equipped with a key in the inslot, and a axle sleeve cup joints in first optical axis section and worm shaft connecting section butt joint department, radially opens on the axle sleeve has more than two screw holes, screw hole internal rotation joint retaining screw, two screw hole internal retaining screws that are located two outsides of axle sleeve axial radially lock first optical axis section and worm shaft connecting section respectively.

2. A worm shaft according to claim 1, characterized in that: the upper end surface of the retaining screw is lower than the outer peripheral surface of the shaft sleeve.

3. A worm shaft according to claim 1, characterized in that: the circumference equipartition is a plurality of locking hole groups on the axle sleeve, and every locking hole group includes more than two radial screw holes, connects the retaining screw in the screw hole, and two screw hole internal retaining screws that are located two outside in axle sleeve axial radially lock first optical axis section and worm axle linkage segment respectively.

4. A worm shaft according to claim 1, characterized in that: the circumferential hole positions of the screw holes are staggered with the positions of the first half key groove and the second half key groove.

5. A worm shaft according to claim 1, characterized in that: the circumferential opening positions of the screw holes are perpendicular to or opposite to the positions of the first half key groove and the second half key groove.

6. A worm shaft according to claim 1, characterized in that: the inner wall of the shaft sleeve is provided with a shaft sleeve key groove corresponding to the cross joint common key, and the shaft sleeve key groove is a through groove or a through groove with one side open.