CN215673466U - High-transmission-ratio chain wheel - Google Patents

Abstract

The utility model discloses a chain wheel with high transmission ratio, belonging to the technical field of chain wheel production; the wheel comprises a wheel hub and a wheel tooth ring connected with the wheel hub, wherein the wheel hub comprises an annular flange, a wheel tooth ring is connected with the annular flange, and wheel teeth are arranged on the outer side of the wheel tooth ring in an annular array manner; the teeth of a cogwheel circle includes half round ring gear, two half round ring gear forms with ring shape flange joint respectively the wheel ring gear, half round ring gear includes that half round ring gear and array set up the teeth of a cogwheel on half round ring gear, be provided with the step that is used for accepting ring shape flange on half round ring gear, the height of step equals half round ring gear thickness and equals the thickness of ring shape flange, teeth of a cogwheel thickness equals the thickness of half round ring gear, set up the spacing groove on the step, be provided with on the ring shape flange with spacing groove complex stopper, one side that half round ring gear is located the teeth of a cogwheel is provided with rubber strip and oil groove, and this sprocket wear resistance is higher, uses reliable and stable.

Description

High-transmission-ratio chain wheel

Technical Field

The utility model relates to a chain wheel, in particular to a chain wheel with a high transmission ratio, and belongs to the technical field of chain wheel production.

Background

The chain transmission is a transmission mode for transmitting the motion and power of a driving chain wheel with a special tooth form to a driven chain wheel with a special tooth form through a chain, has many advantages, compared with belt transmission, has no elastic sliding and slipping phenomena, accurate average transmission ratio, reliable work, high efficiency, large transmission power, strong overload capacity, small transmission size under the same working condition, small required tension, small pressure acting on a shaft, and can work in severe environments of high temperature, humidity, dustiness, pollution and the like, the chain wheel is an important component in the chain transmission, and along with the development of scientific technology and the actual requirements of production, the chain wheel is widely applied to mechanical transmission and the like in the industries of chemical engineering, textile machinery, food processing, instruments, petroleum and the like.

The transmission ratio of the common chain transmission and the wrap angle of the chain on the small chain wheel have corresponding value ranges. Under the condition that the center distance of the chain transmission is fixed, the larger the transmission ratio of the chain transmission is, the smaller the wrap angle of the chain on the small chain wheel is, the number of teeth participating in meshing is reduced, the load borne by each gear tooth is increased, the abrasion of the gear tooth is accelerated, the gear tooth structure is damaged, the transmission stability of the meshing transmission of the chain wheel and the chain is influenced, the replacement and maintenance frequency is higher, when the chain wheel needs to be replaced, the whole chain wheel needs to be replaced, the replacement operation is troublesome, the use effect is influenced, and the service life is prolonged. Therefore, for the small chain wheel on the chain transmission with high transmission ratio, the structural strength and the service life of the small chain wheel need to be improved, and the disassembly and assembly speed of the small chain wheel needs to be improved so as to improve the maintenance efficiency. And because the number of meshing teeth is few to cause the sprocket chain meshing compactness not high, not only can produce wearing and tearing when the operation is used to along with the noise production, influence staff's operating condition, reduced staff's work efficiency, use the adaptability and wait to further promote.

SUMMERY OF THE UTILITY MODEL

To overcome the above-described deficiencies of the prior art, the present invention provides a high ratio sprocket.

The technical scheme adopted by the utility model is as follows: designing a chain wheel with high transmission ratio, which comprises a wheel hub and a wheel gear ring detachably connected with the wheel hub, wherein the wheel hub comprises an annular flange, the wheel gear ring is connected with the annular flange, and a plurality of wheel teeth are arranged on the outer side of the wheel gear ring in an annular array; the gear ring comprises half gear rings, the two half gear rings are detachably connected with the annular flange respectively to form the gear rings, each half gear ring comprises a half gear ring and gear teeth arranged on the half gear rings in an array mode, when the gear teeth are seriously worn, the corresponding half gear rings are quickly dismounted and replaced, the two half gear rings are dismounted and mounted without mutual interference, the dismounting and mounting maintenance time and energy are greatly saved, and the efficiency is improved; the semi-gear ring gear is provided with a step for receiving the circular flange, the circular flange is nested on the step when the semi-gear ring gear is connected with the circular flange in an installing way, the height of the step is equal to half of the thickness of the semi-gear ring gear and equal to the thickness of the circular flange, the levelness of the side surface of the circular flange and the side surface of the semi-gear ring gear is ensured after the semi-gear ring gear is installed, unnecessary rotation interference is reduced, the thickness of the gear teeth is equal to the thickness of the semi-gear ring gear, the gear teeth are ensured to be thick enough, the meshing area is large enough, the meshing precision and the transmission stability are improved, meanwhile, certain structural strength and wear resistance are improved, the use is more durable, the step is provided with a limit groove, the circular flange is provided with a limit block matched with the limit groove, the positioning precision is high, the pressure of a connecting bolt is shared, the connecting structure is more stable and reliable, and one side of the semi-gear ring gear is provided with a rubber strip and an oil groove, the rubber strip is used for making an uproar and promoting wear resistance, and the oil groove is used for the oil storage and leads oil, improves the wearability of sprocket, slows down the rate of wear.

Furthermore, both ends set up a connecting hole respectively about half round ring gear, be provided with corresponding mounting hole on the ring shape flange, the connecting hole with correspond the mounting hole in the construction bolt in order to connect half round ring gear and wheel hub, easy dismounting is swift.

Further, the middle part of the half gear ring gear on one side of the gear teeth is provided with a rubber groove with an opening gradually contracting outwards, and a rubber strip is arranged in the rubber groove. In subsequent rubber strip shaping vulcanization extrusion process, the rubber strip can be filled with the rubber groove, and the rubber groove that the opening outwards shrinks gradually, such structural design can make the connection of rubber strip on half round ring gear more firm, and stability, antifriction in the use are better, can be better fixed the rubber strip, avoid taking place the condition such as drops in the use.

Further, the rubber groove is isosceles trapezoid groove, the lateral surface in rubber groove does not surpass the lateral surface of rubber strip, and the rubber strip surpasss or flushes half round ring gear lateral surface promptly, falls the wear-resisting of making an uproar.

Further, the rubber groove both sides set up the oil groove respectively, the oil groove can be V type groove, oil storage and lead oil.

Furthermore, at least two lightening holes are respectively arranged on the circular ring-shaped flange and the semi-gear toothed ring, and the lightening holes on the circular ring-shaped flange and the semi-gear toothed ring are arc-shaped waist holes and are in one-to-one correspondence.

Furthermore, the limiting groove and the limiting block are of rectangular structures, processing and production are convenient, and the limiting groove and the limiting block are respectively provided with six structures, so that structural strength is guaranteed.

Compared with the prior art, the utility model has the beneficial effects that: the gear teeth are thick enough, the oil grooves and the rubber strips are arranged, the wear resistance is effectively improved, the gear teeth structure can be used for a longer time, the transmission stability of meshing transmission of the chain wheel and the chain is higher, the replacement and maintenance frequency is reduced, when the gear teeth need to be replaced, the whole chain wheel does not need to be replaced, only the half-wheel gear ring needs to be replaced, the replacement operation is simple, the use effect is good, and the service life is longer. The chain wheel has the advantages of high structural strength, long service life, high disassembly and assembly speed and high maintenance efficiency. The oil groove makes the meshing compactness improve with the teeth of a cogwheel of sufficient thickness, sets up rubber strip noise reduction, guarantees staff's operating condition and work efficiency, uses adaptability to have and obtains further promotion.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is an isometric view of the present invention.

FIG. 2 is a schematic cross-sectional view of the present invention.

Fig. 3 is a schematic view of a half-wheel gear ring of the present invention.

In the figure: 1-wheel hub, 2-circular flange, 3-half wheel gear ring, 4-step, 5-limit groove, 6-limit block, 7-rubber strip and 8-oil groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be construed broadly and include, for example, fixed connections, detachable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, in the description of the present invention, unless otherwise specified, the terms "plurality", and "groups" mean two or more, and the terms "several", and "groups" mean one or more. In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the use of the terms first, second and third are used for descriptive purposes only and are not intended to indicate or imply relative importance.

Example 1

As shown in fig. 1-3: a chain wheel with high transmission ratio comprises a wheel hub 1 and a wheel tooth ring connected with the wheel hub 1, wherein the wheel hub 1 comprises an annular flange 2, the gear ring is connected with the circular flange 2, gear teeth are arranged on the outer side of the gear ring in an annular array, the gear ring comprises a half gear ring 3, the two half gear rings 3 are respectively connected with a circular flange 2 to form the gear ring, the semi-gear ring gear 3 comprises a semi-gear ring gear and gear teeth arranged on the semi-gear ring gear in an array manner, the semi-gear ring gear is provided with a step 4 for receiving the circular flange 2, the height of the step 4 is equal to half of the thickness of the half-gear ring and equal to the thickness of the circular flange 2, the thickness of the teeth of a cogwheel equals the thickness of half ring gear, set up spacing groove 5 on the step 4, be provided with on the ring shape flange 2 with spacing groove 5 complex stopper 6, one side that half ring gear 3 is located the teeth of a cogwheel is provided with rubber strip 7 and oil groove 8.

Two ends set up a connecting hole respectively about half round ring gear 3, be provided with corresponding mounting hole on the ring shape flange 2, the connecting hole with correspond the mounting hole in the mounting hole installation bolt. The middle part of the half gear ring 3 on one side of the gear teeth is provided with a rubber groove with an opening gradually contracting outwards, and a rubber strip 7 is arranged in the rubber groove. The rubber groove is isosceles trapezoid groove and the tip is outwards, the lateral surface in rubber groove does not surpass the lateral surface of rubber strip 7. Oil grooves 8 are respectively arranged on two sides of the rubber groove. At least two lightening holes are respectively arranged on the circular ring-shaped flange 2 and the semi-gear toothed ring, and the lightening holes on the circular ring-shaped flange 2 and the semi-gear toothed ring are arc-shaped waist holes and are in one-to-one correspondence. The limiting groove 5 and the limiting block 6 are all rectangular structures, and the limiting groove 5 and the limiting block 6 are respectively provided with six.

While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (7)

1. The utility model provides a sprocket of high drive ratio, includes wheel hub (1) and the wheel ring gear of being connected with wheel hub (1), wheel hub (1) is including circle ring flange (2), the wheel ring gear with circle ring flange (2) are connected, wheel ring gear outside ring array sets up the teeth of a cogwheel, its characterized in that: the utility model discloses a take turns to ring gear, including half ring gear (3), two half ring gear (3) are connected with ring shape flange (2) respectively and are formed the ring gear, half ring gear (3) include half ring gear and array and set up the teeth of a cogwheel on half ring gear, be provided with step (4) that are used for accepting ring shape flange (2) on the half ring gear, the height of step (4) equals half ring gear thickness and equals the thickness of ring shape flange (2), teeth of a cogwheel thickness equals the thickness of half ring gear, set up spacing groove (5) on step (4), be provided with on ring shape flange (2) with spacing groove (5) complex stopper (6), one side that half ring gear (3) are located the teeth of a cogwheel is provided with rubber strip (7) and oil groove (8).

2. A high ratio sprocket as defined in claim 1, wherein: two ends set up a connecting hole respectively about half round ring gear (3), be provided with corresponding mounting hole on ring shape flange (2), the connecting hole with correspond the mounting hole in the mounting hole erection bolt.

3. A high ratio sprocket as defined in claim 2, wherein: the middle part of half round ring gear (3) on one side of the teeth of a cogwheel is provided with the rubber groove that the opening outwards shrinks gradually, rubber strip (7) are installed to the rubber inslot.

4. A high ratio sprocket as set forth in claim 3, wherein: the rubber groove is an isosceles trapezoid groove, and the outer side surface of the rubber groove does not exceed the outer side surface of the rubber strip (7).

5. A high ratio sprocket as defined in claim 4, wherein: oil grooves (8) are respectively arranged on two sides of the rubber groove.

6. A high ratio sprocket as set forth in claim 5, wherein: at least two lightening holes are respectively arranged on the circular ring-shaped flange (2) and the semi-gear toothed ring, and the lightening holes on the circular ring-shaped flange (2) and the semi-gear toothed ring are arc-shaped waist holes and are in one-to-one correspondence.

7. A high ratio sprocket as defined in claim 6, wherein: the limiting groove (5) and the limiting block (6) are both rectangular structures, and the limiting groove (5) and the limiting block (6) are respectively provided with six.

Images