Anti-deviation synchronous belt transmission mechanism

Abstract

The utility model discloses an anti-deviation synchronous belt transmission mechanism. The transmission mechanism comprises a synchronous belt, a driving synchronous pulley, a driven synchronous pulley, a driving shaft and a driven shaft; the driving synchronous belt wheel and the driven synchronous belt wheel are the same synchronous belt wheels, the synchronous belt wheels comprise a first wheel set and a second wheel set, and the surface of the first wheel set and the surface of the second wheel set are each provided with a plurality of wheel teeth; an annular groove is formed between the first wheel set and the second wheel set; a first cavity is formed in the first wheel set, and a second cavity is formed in the second wheel set; the side, provided with the protruding teeth, of the synchronous belt is provided with a protruding part matched with the annular groove. Based on the design of the ring groove of the self-heat-dissipation synchronous pulley, the protruding part is further designed on the synchronous belt, so that the whole transmission mechanism does not make the synchronous belt deviate under the cooperation of the ring groove and the protruding part.

Description

Technical Field

[0001] The utility model relates to the technical field of synchronous belt wheels, in particular to an anti-deviating synchronous belt transmission mechanism. Background Art

[0002] Synchronous pulleys are generally made of steel, aluminum alloy, cast iron, brass and other materials, and their inner holes are round holes, D-shaped holes, tapered holes, etc. Synchronous pulley transmission consists of a closed ring belt with equally spaced teeth on the inner surface and a corresponding pulley.

[0003] The existing anti-deviation design of synchronous pulleys mostly adopts adding anti-deviation mechanisms on both sides of the synchronous belt, but such a setting will cause wear of the synchronous belt. Further, based on the design of the synchronous pulley independently developed, an anti-deviation synchronous belt transmission mechanism is proposed. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide an anti-deviation synchronous belt transmission mechanism, which can solve at least one of the problems mentioned in the above background technology.

[0005] According to one aspect of the utility model, an anti-deviated synchronous belt transmission mechanism is provided, which comprises: a synchronous belt, a driving synchronous pulley, a driven synchronous pulley, a driving shaft and a driven shaft; the driving synchronous pulley and the driven synchronous pulley are the same, the synchronous pulley comprises a first wheel group and a second wheel group, the surface of the first wheel group and the surface of the second wheel group are both provided with a plurality of gear teeth; an annular groove is provided between the first wheel group and the second wheel group; a first cavity is provided inside the first wheel group, and a second cavity is provided inside the second wheel group; the synchronous belt is provided with a protrusion on one side of the convex teeth that fits the annular groove.

[0006] In the above technical solution, a transmission mechanism is established based on a self-heat dissipating synchronous pulley. Thanks to the self-heat dissipating effect of the synchronous pulley, the synchronous pulley can withstand a faster transmission speed, thereby improving the transmission efficiency of the transmission mechanism. At the same time, due to the ring groove design of the self-heat dissipating synchronous pulley, a protrusion is further designed on the synchronous belt, so that the entire transmission mechanism will not cause the synchronous belt to deviate under the cooperation of the ring groove and the protrusion.

[0007] In some embodiments, a first heat dissipation hole is arranged between the gear teeth and penetrates into the cavity along the first direction; a plurality of second heat dissipation holes are arranged on the side of the synchronous pulley and penetrate the cavity along the second direction, and the second heat dissipation holes are arranged around the axis of the synchronous pulley; the mounting hole of the synchronous pulley is a square mounting hole.

[0008] In the above technical solution, a first heat dissipation hole, a second heat dissipation hole and a cavity are provided on the synchronous pulley; the purpose of the first heat dissipation hole is to solve the problem that the edge position of the synchronous pulley is too high. When the traditional synchronous pulley is meshed with the synchronous belt, friction generates heat. This part of the heat cannot be quickly discharged, resulting in heat accumulation, and the purpose of the first heat dissipation hole is to use the airflow generated when the synchronous pulley is meshed with the synchronous belt to quickly bring the heat into the cavity inside the synchronous pulley, thereby alleviating the heat accumulation at the edge; the purpose of the second heat dissipation hole and the cavity is to solve the heat accumulation at the connection between the synchronous pulley and the rotating shaft. The heat at the meshing point of the synchronous pulley enters the cavity through the first heat dissipation hole, and the heat accumulated at the connection between the synchronous pulley and the rotating shaft will also flow into the cavity due to heat conduction. The heat at both positions is balanced through the cavity, so that the overall temperature of the synchronous pulley is in a relatively balanced state. It can be seen from the air pressure formula that the temperature rises and the pressure decreases. Since the synchronous pulley will gradually heat up during operation, the air pressure inside the cavity will gradually decrease. In order to further solve the problem of heat dissipation, a second heat dissipation hole is provided. According to the airflow conduction method, it can be known that the airflow flows from high pressure to low pressure. The second heat dissipation hole is provided to help draw the external low-temperature airflow into the cavity and reduce the temperature inside the cavity. If the second heat dissipation hole is not provided, the airflow will be introduced into the cavity through the first heat dissipation hole, and the problem of internal heat accumulation cannot be solved. In order to further balance the cooling inside the cavity, the second heat dissipation hole is further arranged around the axis of the synchronous pulley, so that the whole is in a relatively balanced state. At the same time, if the second heat dissipation hole is opened at will, it will cause the center of gravity to shift when the synchronous pulley rotates, resulting in polarization. The synchronous pulley adopts a symmetrical arrangement to increase the volume of the cavity and the number of heat dissipation holes. The heat dissipation holes and the cavity of the first wheel group and the second wheel group form opposite heat flow conduction, which accelerates the gas flow in the internal cavity and further improves the heat dissipation efficiency.

[0009] In some embodiments, the cross-sectional shape of the first heat dissipation hole may be square or circular.

[0010] In the above technical solution, if the cross-section of the first heat dissipation hole is square, the area of ​​airflow can be increased. If it is circular, the speed of airflow can be increased by using the slit effect.

[0011] In some embodiments, the synchronous belt has a surface on one side with convex teeth coated with anti-slip paint.

[0012] In the above technical solution, the purpose of such setting is to further prevent the synchronous belt from deviating.

[0013] In some embodiments, the annular groove is V-shaped.

[0014] In the above technical solution, the purpose of such arrangement is that the V-shaped annular groove can further prevent the synchronous belt from deviating. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is one of the schematic diagrams of the transmission mechanism structure of the synchronous belt pulley of an anti-deviating synchronous belt transmission mechanism embodiment of the utility model;

[0017] Figure 2 This is the second schematic diagram of the transmission mechanism structure of the synchronous belt pulley of an anti-deviating synchronous belt transmission mechanism embodiment of the utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of a synchronous belt pulley section of an anti-deviating synchronous belt transmission mechanism embodiment of the utility model;

[0019] Figure 4 It is a schematic cross-sectional view of the interior of a cavity of an embodiment of an anti-deviation synchronous belt transmission mechanism of the utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of a synchronous belt pulley of an embodiment of an anti-deviating synchronous belt transmission mechanism of the utility model;

[0021] Figure 6 The utility model is a schematic diagram of the cross-sectional structure of a synchronous belt pulley of an anti-deviating synchronous belt transmission mechanism embodiment. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is particularly noted that the following embodiments are only used to illustrate the present invention, but do not limit the scope of the present invention. Similarly, the following embodiments are only partial embodiments of the present invention rather than all embodiments. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The utility model provides an anti-deviating synchronous belt transmission mechanism, which can solve at least one problem mentioned in the above background technology.

[0024] See also Figure 1 , Figure 2The transmission mechanism includes: a synchronous belt 32, a driving synchronous pulley 31, a driven synchronous pulley 33, a driving shaft 34 and a driven shaft 35; the driving synchronous pulley 31 and the driven synchronous pulley 33 are the same synchronous pulleys; the synchronous belt 32 is provided with a convex tooth and a protrusion 321 that matches the annular groove 17 is provided on one side. The transmission mechanism is established based on the self-heating synchronous pulley. Thanks to the self-heating effect of the synchronous pulley, the synchronous pulley can withstand a faster transmission speed, thereby improving the transmission efficiency of the transmission mechanism. At the same time, due to the annular groove design of the self-heating synchronous pulley, a protrusion is further designed on the synchronous belt, so that the entire transmission mechanism will not cause the synchronous belt to deviate under the cooperation of the annular groove and the protrusion.

[0025] See also Figure 3 , Figure 4 The synchronous pulley 1 has a plurality of gear teeth on its surface; a cavity 11 is provided inside the synchronous pulley 1, and a first heat dissipation hole 12 is provided between the gear teeth along a first direction A and extending through the cavity 11; a plurality of second heat dissipation holes 13 are provided on the side of the synchronous pulley along a second direction B and extending through the cavity, and the second heat dissipation holes 13 are provided around the axis of the synchronous pulley; the mounting hole 14 of the synchronous pulley is a square mounting hole. Figure 5 , Figure 6 The synchronous pulley includes a first wheel set 15 and a second wheel set 16, and a plurality of gear teeth are arranged on the surface of the first wheel set 15 and the surface of the second wheel set 16; an annular groove 17 is arranged between the first wheel set 15 and the second wheel set 16; a first cavity 151 is arranged inside the first wheel set 15, and a second cavity 161 is arranged inside the second wheel set.

[0026] In this embodiment, a first heat dissipation hole, a second heat dissipation hole and a cavity are respectively provided on the synchronous pulley; the purpose of the first heat dissipation hole is to solve the problem that the edge position of the synchronous pulley is too high. When the traditional synchronous pulley is engaged with the synchronous belt, friction generates heat. This part of the heat cannot be quickly discharged, resulting in heat accumulation, and the purpose of the first heat dissipation hole is to use the airflow generated when the synchronous pulley is engaged with the synchronous belt to quickly bring the heat into the cavity inside the synchronous pulley, thereby alleviating the heat accumulation at the edge; the purpose of the second heat dissipation hole and the cavity is to solve the heat accumulation at the connection between the synchronous pulley and the rotating shaft. The heat at the meshing point of the synchronous pulley enters the cavity through the first heat dissipation hole, and the heat accumulated at the connection between the synchronous pulley and the rotating shaft will also flow into the cavity due to heat conduction. The heat at both positions is balanced through the cavity so that the overall temperature of the synchronous pulley is in a relatively balanced state. It can be seen from the air pressure formula that the temperature rises and the pressure decreases. Since the synchronous pulley will gradually heat up during operation, the air pressure inside the cavity will gradually decrease. In order to further solve the problem of heat dissipation, a second heat dissipation hole is provided. According to the airflow conduction method, the airflow flows from high pressure to low pressure. Setting the second heat dissipation hole helps to draw the external low-temperature airflow into the cavity and reduce the temperature inside the cavity. If the second heat dissipation hole is not set, the airflow will be introduced into the cavity through the first heat dissipation hole, and the problem of internal heat accumulation cannot be solved. In order to further balance the cooling inside the cavity, the second heat dissipation hole is further set around the axis of the synchronous pulley, so that the whole is in a more balanced state. At the same time, if the second heat dissipation hole is opened at will, it will cause the center of gravity to shift when the synchronous pulley rotates, resulting in polarization.

[0027] In this embodiment, the cross-sectional shape of the first heat dissipation hole 12 can be square or circular. If the cross-sectional shape of the first heat dissipation hole is square, the area of ​​airflow can be increased. If the cross-sectional shape of the first heat dissipation hole is circular, the speed of airflow can be increased by using the slit effect. The drawings of this specification take a square as an example for illustration, and a circular example is not drawn.

[0028] In this embodiment, the surface of one side of the synchronous belt 32 provided with the protruding teeth is coated with anti-skid paint. The annular groove 17 is V-shaped.

[0029] In the above technical solution, the purpose of such arrangement is that the V-shaped annular groove can further prevent the synchronous belt from deviating.

[0030] The above descriptions are only some embodiments of the present invention, and do not limit the protection scope of the present invention. Any equivalent device or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An anti-deviating synchronous belt transmission mechanism, characterized in that: The transmission mechanism includes: a synchronous belt, a driving synchronous pulley, a driven synchronous pulley, a driving shaft and a driven shaft; the driving synchronous pulley and the driven synchronous pulley are the same synchronous pulleys, and the synchronous pulleys include a first wheel group and a second wheel group, and the surfaces of the first wheel group and the second wheel group are both provided with a plurality of gear teeth; an annular groove is provided between the first wheel group and the second wheel group; a first cavity is provided inside the first wheel group, and a second cavity is provided inside the second wheel group; and a protrusion that fits the annular groove is provided on one side of the synchronous belt provided with convex teeth.

2. An anti-deviation synchronous belt transmission mechanism according to claim 1, characterized in that: A first heat dissipation hole is arranged between the gear teeth and penetrates the cavity along the first direction; a plurality of second heat dissipation holes are arranged on the side of the synchronous pulley and penetrate the cavity along the second direction, and the second heat dissipation holes are arranged around the axis of the synchronous pulley; the mounting hole of the synchronous pulley is a square mounting hole.

3. An anti-deviation synchronous belt transmission mechanism as claimed in claim 2, characterized in that: The cross-sectional shape of the first heat dissipation hole can be square or circular.

4. The anti-deviation synchronous belt transmission mechanism according to claim 1, characterized in that: The synchronous belt is provided with a convex tooth on one side of the surface coated with anti-skid paint.

5. The anti-deviation synchronous belt transmission mechanism according to claim 1, characterized in that: The annular groove is in a V-shape.

Images