阅读说明：本技术 一种可双向旋转的蜗轮蜗杆传动装置 (Worm gear and worm transmission device capable of rotating in two directions ) 是由 汪培洋 于 2020-07-20 设计创作，主要内容包括：本发明公开了一种可双向旋转的蜗轮蜗杆传动装置,包括蜗杆放置架和蜗轮放置架,所述蜗杆放置架和蜗轮放置架垂直设置,所述蜗杆放置架上设置有双向蜗杆,且双向蜗杆通过蜗杆放置架上开设的第一转动孔与蜗杆放置架转动连接,所述蜗轮放置架上设置有转动轴,且转动轴通过蜗轮放置架上开设的第二转动孔与蜗轮放置架转动连接。本发明采用蜗轮转动盘与双向蜗杆配合转动,根据双向蜗杆上顺向螺旋刃和逆向螺旋刃之间的不同间距来适配不同的齿,进而克服摩擦力过大以及导程角过小导致只能单向旋转传动的问题；采用顺向螺旋刃和逆向螺旋刃设计能够有效地快速对蜗轮转动盘进行正反转操作,提高了工作效率。(The invention discloses a worm and gear transmission device capable of rotating in two directions, which comprises a worm placing frame and a worm gear placing frame, wherein the worm placing frame and the worm gear placing frame are vertically arranged, a two-way worm is arranged on the worm placing frame and is rotatably connected with the worm placing frame through a first rotating hole formed in the worm placing frame, a rotating shaft is arranged on the worm gear placing frame and is rotatably connected with the worm gear placing frame through a second rotating hole formed in the worm gear placing frame. According to the invention, the worm wheel rotating disc and the bidirectional worm are adopted to rotate in a matched manner, different teeth are adapted according to different distances between the forward spiral blade and the reverse spiral blade on the bidirectional worm, and the problem that only one-way rotation transmission can be realized due to overlarge friction force and undersize lead angle is further solved; the forward spiral blade and the reverse spiral blade are designed to effectively and rapidly rotate the worm wheel rotating disc forward and backward, so that the working efficiency is improved.)

1. The utility model provides a but two-way rotatory worm gear, includes worm rack (1) and worm wheel rack (2), its characterized in that, worm rack (1) and worm wheel rack (2) set up perpendicularly, be provided with two-way worm (3) on worm rack (1), and first rotation hole that two-way worm (3) were seted up on through worm rack (1) rotates with worm rack (1) and is connected, be provided with axis of rotation (5) on worm wheel rack (2), and axis of rotation (5) rotate the hole through the second of seting up on worm wheel rack (2) and rotate with worm wheel rack (2) and be connected, axis of rotation (5) both ends are provided with worm wheel rolling disc (4) and turning gear (6) respectively.

2. The worm and gear transmission device capable of rotating in two directions as claimed in claim 1, wherein the worm wheel rotating disc (4) comprises a worm wheel (41), a plurality of first teeth (42), a plurality of second teeth (43), a plurality of third teeth (44) and a plurality of fourth teeth (45), the plurality of first teeth (42), the plurality of second teeth (43), the plurality of third teeth (44) and the plurality of fourth teeth (45) are circumferentially arranged on the outer side wall of the worm wheel (41), the first teeth (42), the plurality of second teeth (43), the plurality of third teeth (44) and the plurality of fourth teeth (45) are sequentially arranged, the second teeth (43), the plurality of third teeth (44) and the plurality of fourth teeth (45) are sequentially and symmetrically arranged on two sides of the first teeth (42), and the first teeth (42), the second teeth (43) and the plurality of third teeth (44) are sequentially and symmetrically arranged on two sides of the plurality of fourth teeth (45).

3. The worm and gear transmission device capable of rotating in two directions as claimed in claim 1, wherein the two-way worm (3) comprises a worm (31), a forward spiral blade (32) and a reverse spiral blade (33), the forward spiral blade (32) and the reverse spiral blade (33) are both arranged on the outer side wall of the worm (31), the length, the number of turns and the blade height of the forward spiral blade (32) and the reverse spiral blade (33) are the same, and the forward spiral blade (32) and the reverse spiral blade (33) are opposite in rotation direction.

4. A bi-directional rotatable worm-and-gear transmission as claimed in claim 2, characterised in that the first (42), second (43), third (44) and fourth (45) teeth are equally spaced.

5. A bi-directional rotatable worm-and-gear transmission as claimed in claim 2, characterized in that the first tooth (42), the second tooth (43), the third tooth (44) and the fourth tooth (45) are sequentially reduced in tooth thickness and tooth width, and the first tooth (42), the second tooth (43), the third tooth (44) and the fourth tooth (45) are unchanged in tooth height.

6. The bi-directional rotatable worm and gear transmission as claimed in claim 2, wherein the fourth tooth (45) is provided with an adapting groove.

Technical Field

The invention relates to the technical field of bidirectional rotating worm gears, in particular to a worm gear transmission device capable of rotating in two directions.

Background

At present, a worm and gear transmission mechanism is often needed to be used in some industrial production operation processes, worm and gear transmission has the obvious advantage of noise reduction and stability, but the phenomenon that the worm and gear can only positively rotate but not reversely rotate due to the fact that friction force is too large and lead angle is too small often exists in the transmission mode, the phenomenon is favorable for self-locking of the device to achieve the protection effect, complexity of procedures in the production process can be brought, and industrial production efficiency is not favorably improved.

Therefore, a worm and gear transmission device capable of rotating in two directions is designed.

Disclosure of Invention

The invention aims to solve the problem that the worm and gear can only rotate forwards and can not rotate backwards due to overlarge friction force and an excessively small lead angle, and provides a worm and gear transmission device capable of rotating in two directions.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a but two-way rotatory worm gear drive, includes worm rack and worm wheel rack, worm rack and worm wheel rack set up perpendicularly, be provided with two-way worm on the worm rack, and two-way worm rotates the hole through the first rotation of seting up on the worm rack and is connected with the worm rack rotation, be provided with the axis of rotation on the worm wheel rack, and the second that the axis of rotation was seted up on through the worm wheel rack rotates the hole and is connected with the worm wheel rack rotation, the axis of rotation both ends are provided with worm wheel rolling disc and rotating gear respectively.

Preferably, the worm wheel rolling disc comprises a worm wheel, a plurality of first teeth, a plurality of second teeth, a plurality of third teeth and a plurality of fourth teeth, the first teeth, the second teeth, the third teeth and the fourth teeth are circumferentially arranged on the outer side wall of the worm wheel, the first teeth, the second teeth, the third teeth and the fourth teeth are sequentially arranged, the second teeth, the third teeth and the fourth teeth are sequentially and symmetrically arranged on two sides of the first teeth, and the first teeth, the second teeth and the third teeth are sequentially and symmetrically arranged on two sides of the fourth teeth.

Preferably, the bidirectional worm comprises a worm, a forward spiral blade and a reverse spiral blade, the forward spiral blade and the reverse spiral blade are both arranged on the outer side wall of the worm, the lengths, the number of turns and the blade heights of the forward spiral blade and the reverse spiral blade are the same, and the rotation directions of the forward spiral blade and the reverse spiral blade are opposite.

Preferably, the first, second, third and fourth teeth are equally spaced.

Preferably, the tooth thickness and the tooth width of the first tooth, the second tooth, the third tooth and the fourth tooth are reduced in sequence, and the tooth heights of the first tooth, the second tooth, the third tooth and the fourth tooth are unchanged.

Preferably, the fourth tooth is provided with an adapting groove.

The invention has the beneficial effects that:

1. according to the invention, the worm wheel rotating disc and the bidirectional worm are adopted to rotate in a matched manner, different teeth are adapted according to different distances between the forward spiral blade and the reverse spiral blade on the bidirectional worm, and the problem that only one-way rotation transmission can be realized due to overlarge friction force and undersize lead angle is further solved.

2. The invention adopts the design of the forward spiral blade and the reverse spiral blade, can effectively and quickly carry out forward and reverse rotation operation on the worm wheel rotating disc, and improves the working efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a bi-directional rotatable worm and gear transmission device according to the present invention;

FIG. 2 is a front view of a bi-directional rotatable worm gear according to the present invention;

fig. 3 is a schematic structural view of a bidirectional worm in a bidirectional rotatable worm and gear transmission device according to the present invention;

fig. 4 is a schematic structural diagram of a worm wheel rotating disc in a bi-directional rotatable worm and gear transmission device according to the present invention.

In the figure: 1 worm rack, 2 worm wheel rack, 3 bidirectional worm, 31 worm, 32 forward spiral blade, 33 reverse spiral blade, 4 worm wheel rotating disc, 41 worm wheel, 42 first tooth, 43 second tooth, 44 third tooth, 45 fourth tooth, 5 rotating shaft and 6 rotating gear.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-4, a worm gear transmission device capable of rotating in two directions comprises a worm rack 1 and a worm wheel rack 2, the worm rack 1 and the worm wheel rack 2 are vertically arranged, a two-way worm 3 is arranged on the worm rack 1, the two-way worm 3 is rotatably connected with the worm rack 1 through a first rotating hole arranged on the worm rack 1, a rotating shaft 5 is arranged on the worm wheel rack 2, the rotating shaft 5 is rotatably connected with the worm wheel rack 2 through a second rotating hole arranged on the worm wheel rack 2, a worm wheel rotating disc 4 and a rotating gear 6 are respectively arranged at two ends of the rotating shaft 5, wherein the worm wheel rotating disc 4 and the two-way worm 3 are meshed for transmission, the two-way worm 3 is fixedly connected with an output end of an external load rotating device to provide power for the rotation of the two-way worm 3, the worm wheel rotating disc 4 can be meshed for transmission, can be connected with the equipment to be rotated.

The worm wheel rotating disc 4 comprises a worm wheel 41, a plurality of first teeth 42, a plurality of second teeth 43, a plurality of third teeth 44 and a plurality of fourth teeth 45, the plurality of first teeth 42, the plurality of second teeth 43, the plurality of third teeth 44 and the plurality of fourth teeth 45 are circumferentially arranged on the outer side wall of the worm wheel 41, and the first teeth 42, the second teeth 43, the plurality of third teeth 44 and the plurality of fourth teeth 45 have the same distance, so that each tooth can be conveniently contacted with the bidirectional worm 3, and the condition of slipping or incapability of adapting is avoided.

The first tooth 42, the second tooth 43, the third tooth 44 and the fourth tooth 45 are sequentially arranged, the second tooth 43, the third tooth 44 and the fourth tooth 45 are sequentially and symmetrically arranged on two sides of the first tooth 42, the second tooth 43 and the third tooth 44 are sequentially and symmetrically arranged on two sides of the fourth tooth 45, as the bidirectional worm 3 adopts a double-spiral blade structure, the distance between the two spiral blades is also changed, and the length of the spiral line from the maximum distance between the two spiral blades to the joint between the two spiral blades is equal to the length of the curve from the first tooth 42 to the fourth tooth 45 on the worm wheel rotating disc 4.

The tooth thickness and the tooth width of the first tooth 42, the second tooth 43, the third tooth 44 and the fourth tooth 45 are sequentially reduced, the tooth heights of the first tooth 42, the second tooth 43, the third tooth 44 and the fourth tooth 45 are unchanged, the maximum distance between the two spiral blades corresponds to the first tooth 42, and the position of a joint between the two spiral blades corresponds to the fourth tooth 45.

An adaptive groove is formed in the fourth tooth 45, and a contact point of the forward spiral blade 32 and the reverse spiral blade 33 can be arranged in the adaptive groove, so that the bidirectional worm 3 can be pushed to rotate conveniently.

The bidirectional worm 3 comprises a worm 31, a forward spiral blade 32 and a reverse spiral blade 33, the forward spiral blade 32 and the reverse spiral blade 33 are both arranged on the outer side wall of the worm 31, the lengths, the number of turns and the blade height of the forward spiral blade 32 and the reverse spiral blade 33 are the same, the forward spiral blade 32 and the reverse spiral blade 33 are opposite in rotation direction, the forward spiral blade 32 and the reverse spiral blade 33 can support the forward and reverse rotation of the worm gear rotating disc 4, and therefore the problem that the worm gear is self-locked due to overlarge friction force and undersize lead angle can be solved, the forward spiral blade 32 and the reverse spiral blade 33 can push the worm gear rotating disc 4 to rotate forward and reverse, and bidirectional rotation is completed.

The working principle of the invention is as follows: firstly, the bidirectional worm 3 and the rotating shaft 5 are vertically arranged and are arranged on the worm placing rack 1 and the worm wheel placing rack 2, wherein the worm wheel rotating disc 4 on the rotating shaft 5 is matched with the forward spiral blade 32 and the reverse spiral blade 33 on the bidirectional worm 3.

The self-locking phenomenon can occur in the ordinary worm gear transmission, only unidirectional rotation can occur, and reverse rotation can not occur, the worm gear transmission in the device can realize positive and reverse rotation, firstly, a first tooth 42, a second tooth 43, a third tooth 44 and a fourth tooth 45 on the worm gear 41 are respectively matched with the forward spiral blade 32 and the reverse spiral blade 33, due to the different shapes of the first tooth 42, the second tooth 43, the third tooth 44 and the fourth tooth 45, so that the distance between the forward spiral blade 32 and the reverse spiral blade 33 and the radian can be matched, the self-locking edge of the worm gear is caused by overlarge friction force and undersize lead angle, it is therefore necessary to design the teeth of the worm wheel separately to produce streamlined and differently thick teeth, the forward spiral blade 32 and the reverse spiral blade 33 can push the worm wheel rotating disc 4 to rotate forward and reverse, and therefore bidirectional rotation is achieved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.