CN203743361U

CN203743361U - Worm-synchronous belt transmission mechanism

Info

Publication number: CN203743361U
Application number: CN201320781431.7U
Authority: CN
Inventors: 钱志良
Original assignee: Zhangjiagang Institute of Industrial Technologies Soochow University
Current assignee: Suzhou University
Priority date: 2013-12-03
Filing date: 2013-12-03
Publication date: 2014-07-30
Anticipated expiration: 2023-12-03

Abstract

The utility model relates to a worm-synchronous belt transmission mechanism which comprises a synchronous belt-worm gear, a worm, and an outer side gear synchronous belt and a pulley block, or a double-side tooth synchronous belt and a synchronous pulley set, wherein the tooth surface of the gear tooth of the synchronous belt-worm gear partly adopts a worm gear tooth surface meshed with the worm, and partly adopts a synchronous pulley tooth surface meshed with the synchronous belt, so as to be not only meshed with the worm for transmission but also meshed with the synchronous belt for transmission. According to the utility model, through the synchronous belt-worm gear, the rotation of the worm is directly converted into low speed motion of the synchronous belt inside the plane of the worm shaft, or converted into low-speed rotation of the synchronous pulley arranged to form a 90-degree angle with the worm in a staggered manner. The mechanism has a simple structure, and is compact in dimension, low in manufacturing cost and convenient to use and maintain.

Description

A kind of worm screw-synchronous belt drive mechanism

Technical field

The utility model relates to a kind of mechanical transmission mechanism.

Background technique

Worm Wheel System for transmitting motion and power between spatial intersecting diaxon, and axle alternate angle is generally 90 degree.Because worm wheel tooth is continuous helical tooth, can be continuous with worm gear gear teeth meshing, do not enter engagement and exit the process engaging, so Worm Wheel System stable drive, noise are very low; Again due to seldom (can only have gear teeth) of the worm screw number of teeth, so Worm Wheel System can obtain very large velocity ratio with compact structure; In addition, because the worm gear gear teeth are by forming with the complete panidiomorphic worm gear hob rolling cut of worm screw, so, although being alternating axis, arranges worm and wheel, between the worm and wheel flank of tooth, can retention wire contact engagement driving, there is higher bearing capacity.

Timing Belt is that one or both sides have equidistant toothed endless rubber belt, and its matrix is polyurethane or neoprene, and tension element is wire rope or glass cord normally, Timing Belt overall thin and light, be easy to bending flexible, tensile strength is high.Compared with belonging to other band transmissions or chain transmission of flexible body transmission, toothed belt transmission tool has the following advantages: Timing Belt is by transmitting motion and power with tooth with engaging of the synchronous pulley gear teeth, and fricton-tight when work, velocity ratio is accurate, and transmission efficiency is high; Meanwhile, because Timing Belt belt body is thinner, flexible, rely on again engagement driving, so the belt wheel minimum dimension allowing is less, the tension force that maintains the required band of normal transmission is low, and applicable gear range is large, safeguards easy to usely, and operating cost is lower; In addition, it is good that Timing Belt also has wear resistance, and long working life can have the advantage such as work under the rugged environment such as water or many dirt.

With respect to other transmissions, worm drive and toothed belt transmission all have significant advantage, but both contact while application, especially in the time wishing Timing Belt and the coplanar transmission of worm axis, must carry out transition with other driving mechanisms between the two, this can make the increase of overall space size, structural complexity increase, manufacture difficulty and the cost of whole transmission device improve, and above-mentioned defect is being unacceptable in some cases.

Summary of the invention

The technical problems to be solved in the utility model is: the complex structure existing while overcoming worm drive and toothed belt transmission series winding application in prior art, occupy the deficiency of great Deng aspect, space, a kind of simple in structure, compact dimensions, manufacture and working service driving mechanism are easily provided, and it is directly transformed into the low-speed motion of Timing Belt in axial plane of worm by the rotation of worm screw or becomes slowly running of synchronous pulley that 90 degree axle alternate angles arrange with worm screw.

For achieving the above object, the utility model adopt technological scheme be to provide a kind of worm screw-synchronous belt drive mechanism, it comprises the combination of Timing Belt-worm gear, worm screw and Timing Belt-wheels; The gear teeth flank of tooth of described Timing Belt-worm gear be part can with the worm gear flank of tooth of worm meshing, the part synchronous pulley flank of tooth that can engage with Timing Belt, can with worm meshing transmission again can with Timing Belt engagement driving; Described Timing Belt-wheels are combined as outside tooth Timing Belt and sheave block combination, or double cog synchronous belt and the combination of Timing Belt wheels.

Outside described in the utility model tooth Timing Belt and sheave block combination, the band tooth of outside tooth Timing Belt is positioned at band nodal section outside; Outside tooth Timing Belt is enclosed within on sheave block, and band anchor ring and Timing Belt-worm gear are coplanar; The layout of sheave block middle pulley makes walk around Timing Belt-worm gear and engage with it by the outside tooth Timing Belt of Timing Belt-worm gear one side.This mechanism, by Timing Belt-worm gear, is directly transformed into the low-speed motion of Timing Belt in axial plane of worm by the rotation of active worm screw.

Double cog synchronous belt described in the utility model and the combination of Timing Belt wheels, double cog synchronous belt is enclosed within on Timing Belt wheels, and double cog synchronous belt anchor ring and Timing Belt-worm gear are coplanar; Timing Belt wheels comprise several driven synchronous pulleys and an output synchronous pulley, and the layout of synchronous pulley makes walk around Timing Belt-worm gear and engage with it by the double cog synchronous belt of Timing Belt-worm gear one side.This mechanism is directly transformed into the rotation of active worm screw slowly running of the output synchronous pulley arranged with worm screw axle alternate angle in 90 ° by Timing Belt-worm gear, and, due to the intervention of Timing Belt, the relative position of output synchronous pulley and worm screw can be arranged flexibly as required.

Due to the utilization of technique scheme, compared with prior art, the present invention has the following advantages:

1, worm screw-synchronous belt drive mechanism that the utility model provides is pure mechanical device, simple in structure, and compact dimensions is cheap for manufacturing cost, and working service is convenient.

2, the rotation of active worm screw is directly transformed into the low-speed motion of Timing Belt in axial plane of worm by worm screw-synchronous belt drive mechanism that the utility model provides, simplify the Transmitted chains from worm drive to toothed belt transmission, can make the overall dimension of whole transmission device obviously reduce, structural complexity reduces greatly, and operation and maintenance is convenient.

3, worm screw-synchronous belt drive mechanism that the utility model provides is directly transformed into the rotation of active worm screw the slowly running of output synchronous pulley that becomes 90 degree axle alternate angles to arrange with worm axis, and, due to Timing Belt variable-length, be easy to bending, so the relative position of output synchronous pulley and worm screw can be arranged flexibly as required.

Brief description of the drawings

Cross sectional representation in the middle of Timing Belt-face width that Fig. 1 provides for the utility model embodiment;

The driving mechanism schematic diagram that Fig. 2 provides for the utility model embodiment one;

The driving mechanism schematic diagram that Fig. 3 provides for the utility model embodiment two;

In figure: 1, active worm screw; 2, Timing Belt-worm gear; 3, outside tooth Timing Belt; 4, pulley; 5, double cog synchronous belt, 6, driven synchronous pulley; 7, output synchronous pulley.

Embodiment

Below in conjunction with drawings and Examples, the utility model is further described.

Embodiment one:

Referring to accompanying drawing 1, cross sectional representation in the middle of Timing Belt-face width that its present embodiment provides, when the processing of Timing Belt-worm gear adopts worm gear hob to expect tooth depth to synchronous pulley radial feed to cut out, cutter tooth center line is along synchronous pulley teeth groove center line radial feed.Because hobboing cutter cutter tooth is helical tooth, so with the Timing Belt-worm gear of said method cutting, two lateral tooth flanks of hobboing cutter helical tooth can be cut respectively two lateral tooth flanks of synchronous pulley, the generate worm gear flank of tooth, and lay respectively at the both sides of synchronous pulley middle section at two worm gear flank of tooth of synchronous pulley teeth groove both sides generate.The gear teeth flank of tooth of the Timing Belt-worm gear obtaining be part can with the worm gear flank of tooth of worm meshing, the part synchronous pulley flank of tooth that can engage with Timing Belt, it can with worm meshing transmission again can with Timing Belt engagement driving.

Referring to accompanying drawing 2, it is a kind of worm screw-synchronous belt drive mechanism that the present embodiment provides; This mechanism mainly comprises initiatively worm screw 1, Timing Belt-worm gear 2, outside tooth Timing Belt 3 and several pulleys 4; Timing Belt-worm gear 2 engages with worm screw 1; Timing Belt 3 is enclosed within on the sheave block being made up of several pulleys 4, and Timing Belt anchor ring and Timing Belt-worm gear are coplanar, and the layout of sheave block makes walk around Timing Belt-worm gear and be engaged with near the Timing Belt of worm screw.Thus, this mechanism is directly transformed into the low-speed motion of Timing Belt in axial plane of worm by Timing Belt-worm gear by the rotation of active worm screw.

Embodiment two:

Timing Belt-the worm gear arrangement obtaining by embodiment one, its gear teeth flank of tooth be part can with the worm gear flank of tooth of worm meshing, the part synchronous pulley flank of tooth that can engage with Timing Belt, it can with worm meshing transmission again can with Timing Belt engagement driving.

Referring to Fig. 3, it is a kind of worm screw-synchronous belt drive mechanism that the present embodiment provides; This mechanism comprises Timing Belt-worm gear 2, worm screw 1, double cog synchronous belt 5 and several synchronous pulleys; Timing Belt-worm gear 2 engages with worm screw 1; Timing Belt cover 5 is on Timing Belt wheels, and Timing Belt anchor ring and Timing Belt-worm gear are coplanar; Timing Belt wheels comprise several driven synchronous pulleys 6 and one output synchronous pulley 7, synchronous pulley layout make walk around Timing Belt-worm gear and be engaged with near the Timing Belt of worm screw.Thus, this mechanism is directly transformed into the rotation of active worm screw slowly running of the output synchronous pulley arranged with worm screw axle alternate angle in 90 ° by Timing Belt-worm gear, and due to the intervention of Timing Belt, the relative position of output synchronous pulley and worm screw can be arranged flexibly as required.

Claims

1. worm screw-synchronous belt drive mechanism, is characterized in that: it comprises Timing Belt-worm gear, worm screw and Timing Belt-wheels combination; The gear teeth flank of tooth of described Timing Belt-worm gear be part can with the worm gear flank of tooth of worm meshing, the part synchronous pulley flank of tooth that can engage with Timing Belt, can with worm meshing transmission again can with Timing Belt engagement driving; Described Timing Belt-wheels are combined as outside tooth Timing Belt and sheave block combination, or double cog synchronous belt and the combination of Timing Belt wheels;

Described outside tooth Timing Belt and sheave block combination, the band tooth of outside tooth Timing Belt is positioned at band nodal section outside; Outside tooth Timing Belt is enclosed within on sheave block, and band anchor ring and Timing Belt-worm gear are coplanar; The layout of sheave block middle pulley makes walk around Timing Belt-worm gear and engage with it by the outside tooth Timing Belt of Timing Belt-worm gear one side;

Described double cog synchronous belt and the combination of Timing Belt wheels, double cog synchronous belt is enclosed within on Timing Belt wheels, and double cog synchronous belt anchor ring and Timing Belt-worm gear are coplanar; Timing Belt wheels comprise several driven synchronous pulleys and an output synchronous pulley, and the layout of synchronous pulley makes walk around Timing Belt-worm gear and engage with it by the double cog synchronous belt of Timing Belt-worm gear one side.