Belt wheel reversing mechanism and roller transmission device

Abstract

The utility model relates to a belt wheel reversing mechanism and a roller transmission device, and belongs to the technical field of belt wheel transmission. The utility model provides a belt wheel reversing mechanism which comprises an output wheel. The first transmission wheel assembly comprises a first driving wheel and a first driven wheel; the second transmission wheel assembly comprises a second driving wheel and a second driven wheel; the driving assembly is used for driving the first driving wheel and the second driving wheel to rotate in the same direction; the first driven wheel, the second driven wheel and the output wheel are in transmission connection through an output transmission belt, the first driven wheel and the output wheel can rotate reversely, and the second driven wheel and the output wheel can rotate in the same direction; when the first transmission wheel assembly is in the joint state, the output wheel rotates reversely; when the second transmission wheel assembly is in a joint state, the output wheel rotates in the same direction. The belt wheel reversing mechanism has a small rotating speed fluctuation range, and the conveying quality of a material belt is improved. The utility model further provides a roller transmission device which comprises the belt wheel reversing mechanism.

Description

Technical Field

[0001] The present application relates to the technical field of pulley transmission, and in particular to a pulley reversing mechanism and a roller transmission device. Background Art

[0002] During the conveying process of the material belt, it needs to pass through multiple rollers, some of which are used to provide power, and some rollers are used to maintain tension. The motor is connected to the output wheel through the transmission belt, which drives the roller to rotate, and then drives the material belt to move forward. When the conveying direction of the material belt needs to be switched, the output wheel rotates in the opposite direction, driving the corresponding roller to rotate in the opposite direction, realizing the reverse conveying of the material belt.

[0003] Traditional pulley reversing technology is mainly realized by independent motors, that is, each output wheel is equipped with an independent motor, and multiple motors output power in the opposite direction at the same time, driving the corresponding power roller to rotate in the opposite direction through the output wheel. However, due to the poor synchronization of motor control and its own fluctuation range, especially in the low acceleration stage, the speed fluctuation is obvious, which may cause unstable tension of the material belt and cause quality problems. Utility Model Content

[0004] To this end, the present application proposes a pulley reversing mechanism and a roller transmission device, which can realize the reversing rotation of the output wheel and have a smaller rotation speed fluctuation amplitude, thereby improving the conveying quality of the material belt.

[0005] The pulley reversing mechanism of some embodiments of the present application comprises: an output wheel; a first transmission wheel assembly, comprising a first driving wheel and a first driven wheel, wherein the first driving wheel and the first driven wheel are detachably connected; a second transmission wheel assembly, comprising a second driving wheel and a second driven wheel, wherein the second driving wheel and the second driven wheel are detachably connected; a driving assembly, used for driving the first driving wheel and the second driving wheel to rotate in the same direction; the first driven wheel, the second driven wheel and the output wheel are connected by an output transmission belt, wherein the first driven wheel can rotate in the opposite direction to the output wheel, and the second driven wheel can rotate in the same direction to the output wheel; when the first driving wheel and the first driven wheel are in an engaged state and the second driving wheel and the second driven wheel are in a separated state, the first driven wheel is driven by the first driving wheel to rotate, and the first driven wheel drives the output wheel to rotate in the opposite direction through the output transmission belt; when the first driving wheel and the first driven wheel are in a separated state and the second driving wheel and the second driven wheel are in an engaged state, the second driving wheel is driven by the second driven wheel to rotate, and the second driven wheel drives the output wheel to rotate in the same direction through the output transmission belt.

[0006] According to some embodiments of the present application, the output wheel and the second driven wheel are both drivingly connected to the inner side of the output transmission belt, and the first driven wheel is drivingly connected to the outer side of the output transmission belt.

[0007] According to some embodiments of the present application, the drive assembly includes: a motor; a first synchronous wheel and a second synchronous wheel; the output shaft of the motor is transmission connected to the first synchronous wheel, the first synchronous wheel and the second synchronous wheel are transmission connected via a first transmission belt, and the second synchronous wheel, the first driving wheel and the second driving wheel are transmission connected via a second transmission belt.

[0008] According to some embodiments of the present application, when the first driving wheel and the first driven wheel are in an engaged state and the second driving wheel and the second driven wheel are in a disengaged state, the motor is configured to rotate in a first direction to drive the output wheel to rotate in a direction opposite to the first direction; when the first driving wheel and the first driven wheel are in an engaged state and the second driving wheel and the second driven wheel are in a disengaged state, the motor is configured to rotate in the first direction to drive the output wheel to rotate in the first direction.

[0009] According to some embodiments of the present application, both the first synchronous wheel and the second synchronous wheel are drivingly connected to the inner side surface of the first transmission belt.

[0010] According to some embodiments of the present application, the second synchronous wheel, the first driving wheel and the second driving wheel are all transmission-connected to the inner side surface of the second transmission belt.

[0011] According to some embodiments of the present application, the second synchronous wheel includes an inner pulley and an outer pulley that are coaxially connected, the inner pulley is connected to the first transmission belt, and the outer pulley is connected to the second transmission belt.

[0012] According to some embodiments of the present application, the first driving wheel and the first driven wheel are coaxially connected by an electromagnetic clutch. When the first transmission wheel assembly is in a powered-on state, the first driving wheel drives the first driven wheel to rotate synchronously. When the first transmission wheel assembly is in a powered-off state, the first driving wheel and the first driven wheel rotate independently of each other. The second driving wheel and the second driven wheel are coaxially connected by an electromagnetic clutch. When the second transmission wheel assembly is in a powered-on state, the second driving wheel drives the second driven wheel to rotate synchronously. When the second transmission wheel assembly is in a powered-off state, the second driving wheel and the second driven wheel rotate independently of each other.

[0013] According to some embodiments of the present application, the pulley reversing mechanism further includes: a third driven wheel drivingly connected to the output transmission belt.

[0014] The roller transmission device of some embodiments of the present application uses the roller transmission device of the above-mentioned pulley reversing mechanism, including: a power roller, which is transmission-connected to the output wheel and driven by the output wheel to rotate synchronously.

[0015] Compared with the prior art, this solution has the following beneficial effects:

[0016] In the pulley reversing mechanism of the embodiment of the present application, the first driving wheel and the second driving wheel rotate in the same direction, the first driven wheel and the output wheel rotate in the opposite direction, and the second driven wheel and the output wheel rotate in the same direction. One of the first driven wheel and the second driven wheel is controlled as a power wheel and the other as a driven wheel by means of mechanical clutch or electromagnetic clutch. When the first driven wheel is used as a power wheel, the first driven wheel drives the output wheel to rotate in the opposite direction relative to the first driving wheel; when the second driven wheel is used as a power wheel, the second driven wheel drives the output wheel to rotate in the same direction relative to the second driving wheel. Since the first driving wheel and the second driving wheel are driven by the same driving assembly, the undesirable phenomenon of uneven tension of the material belt caused by the difference in synchronous control of multiple motors is overcome, the structure of the entire transmission system is simplified, and the conveying quality of the material belt is improved.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A transmission schematic diagram of a pulley reversing mechanism provided in an embodiment of the present application, in which the first transmission wheel assembly is in a powered-on state and the second transmission wheel assembly is in a powered-off state;

[0020] Figure 2 A transmission schematic diagram of a pulley reversing mechanism provided in an embodiment of the present application, in which the first transmission wheel assembly is in a power-off state and the second transmission wheel assembly is in a power-on state;

[0021] Figure 3 A schematic diagram of a pulley transmission of a pulley reversing mechanism provided in an embodiment of the present application;

[0022] Figure 4 This is a transmission schematic diagram of the roller transmission device provided in an embodiment of the present application.

[0023] Icons: 100-pulley reversing mechanism; 110-drive assembly; 111-motor; 112-first synchronous wheel; 113-second synchronous wheel; 1131-inner pulley; 1132-outer pulley; 120-first transmission wheel assembly; 121-first driving wheel; 122-first driven wheel; 130-second transmission wheel assembly; 131-second driving wheel; 132-second driven wheel; 140-output wheel; 150-third driven wheel; 161-first transmission belt; 162-second transmission belt; 163-output transmission belt; 1631-inner side of the belt; 1632-outer side of the belt; P-first direction; 200-roller transmission device; 210-power roller; 220-contact roller; 230-winding roller; 300-sub-pole sheet belt. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0026] like Figure 1 , Figure 2 and Figure 3As shown, the pulley reversing mechanism 100 of some embodiments of the present application includes a driving assembly 110, a first transmission wheel assembly 120, a second transmission wheel assembly 130 and an output wheel 140. The first transmission wheel assembly 120 includes a first driving wheel 121 and a first driven wheel 122, and the first driving wheel 121 and the first driven wheel 122 are detachably connected; the second transmission wheel assembly 130 includes a second driving wheel 131 and a second driven wheel 132, and the second driving wheel 131 and the second driven wheel 132 are detachably connected; the driving assembly 110 is used to drive the first driving wheel 121 and the second driving wheel 131 to rotate in the same direction. The first driven wheel 122, the second driven wheel 132 and the output wheel 140 are connected by an output transmission belt 163, and the first driven wheel 122 can rotate in the opposite direction of the output wheel 140, and the second driven wheel 132 can rotate in the same direction as the output wheel 140. When the first driving wheel 121 and the first driven wheel 122 are in an engaged state and the second driving wheel 131 and the second driven wheel 132 are in a separated state, the first driving wheel 121 drives the first driven wheel 122 to rotate, and the first driven wheel 122 drives the output wheel 140 to rotate in the opposite direction through the output transmission belt 163; when the first driving wheel 121 and the first driven wheel 122 are in a separated state and the second driving wheel 131 and the second driven wheel 132 are in an engaged state, the second driving wheel 131 drives the second driven wheel 132 to rotate, and the second driven wheel 132 drives the output wheel 140 to rotate in the same direction through the output transmission belt 163.

[0027] The output wheel 140 is the final pulley for outputting power, and the reversing of the pulley reversing mechanism 100 refers to the switching of the rotation direction of the output wheel 140. The first driving wheel 121 and the first driven wheel 122 can be connected by electromagnetic clutch or mechanical clutch; the second driving wheel 131 and the second driven wheel 132 can be connected by electromagnetic clutch or mechanical clutch.

[0028] Driven by the driving assembly 110, the first driving wheel 121 and the second driving wheel 131 both rotate along the first direction P; when the first driven wheel 122 drives the output wheel 140 to rotate, the first driven wheel 122 rotates along the first direction P, and the output wheel 140 rotates in the opposite direction of the first direction P; when the second driven wheel 132 drives the output wheel 140 to rotate, the second driven wheel 132 and the output wheel 140 both rotate along the first direction P.

[0029] In the pulley reversing mechanism 100 of the embodiment of the present application, the first driving wheel 121 and the second driving wheel 131 rotate in the same direction, the first driven wheel 122 and the output wheel 140 rotate in the opposite direction, and the second driven wheel 132 and the output wheel 140 rotate in the same direction. One of the first driven wheel 122 and the second driven wheel 132 is controlled to be a power wheel and the other is controlled to be a driven wheel by mechanical clutch or electromagnetic clutch. When the first driven wheel 122 is used as a power wheel, the first driven wheel 122 drives the output wheel 140 to rotate in the opposite direction relative to the first driving wheel 121; when the second driven wheel 132 is used as a power wheel, the second driven wheel 132 drives the output wheel 140 to rotate in the same direction relative to the second driving wheel 131. Since the first driving wheel 121 and the second driving wheel 131 are both driven by the same driving assembly 110, the undesirable phenomenon of uneven tension of the material belt caused by the difference in synchronous control of multiple motors is overcome, the structure of the entire transmission system is simplified, and the conveying quality of the material belt is improved.

[0030] In some embodiments of the present application, the first driving wheel 121 and the first driven wheel 122 are coaxially connected by electromagnetic clutch. When the first transmission wheel assembly 120 is in a powered-on state, the first driving wheel 121 drives the first driven wheel 122 to rotate synchronously. When the first transmission wheel assembly 120 is in a powered-off state, the first driving wheel 121 and the first driven wheel 122 rotate independently of each other; the second driving wheel 131 and the second driven wheel 132 are coaxially connected by electromagnetic clutch. When the second transmission wheel assembly 130 is in a powered-on state, the second driving wheel 131 drives the second driven wheel 132 to rotate synchronously. When the second transmission wheel assembly 130 is in a powered-off state, the second driving wheel 131 and the second driven wheel 132 rotate independently of each other.

[0031] When the first transmission wheel assembly 120 is in a powered-on state, power is transmitted to the first driven wheel 122, the first driven wheel 122 rotates in the first direction P, and the second driven wheel 132 rotates in the opposite direction of the first direction P driven by the output transmission belt 163; when the second transmission wheel assembly 130 is in a powered-on state, power is transmitted to the second driven wheel 132, the second driven wheel 132 rotates in the first direction P, and the first driven wheel 122 rotates in the opposite direction of the first direction P driven by the output transmission belt 163.

[0032] The first transmission wheel assembly 120 and the second transmission wheel assembly 130 are both electromagnetic clutch double wheels, which can quickly realize the transmission connection and mutual independence of the driving wheel and the driven wheel by powering on or off, and switch between power transmission to the first driven wheel 122 or the second driven wheel 132, thereby realizing the reversal of the output wheel 140.

[0033] In other embodiments, the first transmission wheel assembly 120 and the second transmission wheel assembly 130 may also realize transmission connection between the driving wheel and the driven wheel or independent rotation thereof through other transmission modes.

[0034] In some embodiments of the present application, the drive assembly 110 includes a motor 111, a first synchronous wheel 112 and a second synchronous wheel 113, the output shaft of the motor 111 is transmission connected to the first synchronous wheel 112, the first synchronous wheel 112 and the second synchronous wheel 113 are transmission connected via a first transmission belt 161, and the second synchronous wheel 113, the first driving wheel 121 and the second driving wheel 131 are transmission connected via a second transmission belt 162.

[0035] The output shaft of the motor 111 rotates along the first direction P, and the motor 111 can drive the first driving wheel 121 and the second driving wheel 131 to rotate along the first direction P. On the one hand, during the reversing process, the output shaft of the motor 111 always rotates along the first direction P, which simplifies the pulley steering process; on the other hand, since the entire pulley reversing mechanism 100 is only equipped with one motor 111, the undesirable phenomenon of unstable material belt tension caused by the superposition of fluctuation amplitudes of multiple servo motors is overcome, thereby improving the stability of material belt conveying.

[0036] In other embodiments, the motor 111 may also transmit power to the first driving wheel 121 and the second driving wheel 131 in other ways.

[0037] In some embodiments of the present application, when the first driving wheel 121 and the first driven wheel 122 are in an engaged state and the second driving wheel 131 and the second driven wheel 132 are in a disengaged state, the motor 111 is configured to rotate along the first direction P to drive the output wheel 140 to rotate in the opposite direction of the first direction P; when the first driving wheel 121 and the first driven wheel 122 are in a disengaged state and the second driving wheel 131 and the second driven wheel 132 are in an engaged state, the motor 111 is configured to rotate along the first direction P to drive the output wheel 140 to rotate along the first direction P.

[0038] With this arrangement, the output shaft of the motor 111 , the first driving wheel 121 and the second driving wheel 131 all rotate in the first direction P. The output shaft of the motor 111 transmits power to the second transmission belt 162 via two synchronous wheels, thereby simplifying the structure of the drive assembly 110 .

[0039] In other embodiments, the rotation direction of the output shaft of the motor 111 may also be opposite to the rotation direction of the first driving wheel 121 .

[0040] In some embodiments of the present application, the first synchronous wheel 112 and the second synchronous wheel 113 are both transmission-connected to the inner side surface of the first transmission belt 161 .

[0041] That is, the first synchronous wheel 112 and the second synchronous wheel 113 jointly support the first transmission belt 161 , and the first synchronous wheel 112 and the second synchronous wheel 113 have the same rotation direction.

[0042] This arrangement simplifies the process of transmitting the power of the motor 111 to the second synchronous wheel 113 , and simplifies the structure of the driving assembly 110 .

[0043] In other embodiments, two additional pulleys may be provided to support the first transmission belt 161, and the first synchronous wheel 112 and the second synchronous wheel 113 may be transmission-connected to the outer side surface of the first transmission belt 161; alternatively, the directions of the first synchronous wheel 112 and the second synchronous wheel 113 may be opposite, which does not affect the use of the same driving assembly 110 to drive the first driving wheel 121 and the second driving wheel 131 to rotate in the same direction.

[0044] In some embodiments of the present application, the second synchronous wheel 113 , the first driving wheel 121 , and the second driving wheel 131 are all transmission-connected to the inner side surface of the second transmission belt 162 .

[0045] That is to say, the second synchronous wheel 113 , the first driving wheel 121 , and the second driving wheel 131 jointly support the second transmission belt 162 , so that the first driving wheel 121 and the second driving wheel 131 rotate in the same direction.

[0046] This arrangement simplifies the process of transmitting power from the second synchronous wheel 113 to the first driving wheel 121 and the second driving wheel 131 , simplifies the transmission process of the second transmission belt 162 , and reduces the number of pulleys.

[0047] In other embodiments, the second synchronous wheel 113 may be in driving connection with the outer side of the second transmission belt 162 , as long as the first driving wheel 121 and the second driving wheel 131 are in driving connection with the same side of the second transmission belt 162 .

[0048] The second synchronous wheel 113 is drivingly connected to both the first transmission belt 161 and the second transmission belt 162 , so as to transmit power to the first driving wheel 121 and the second driving wheel 131 .

[0049] In some embodiments of the present application, the second synchronous wheel 113 includes an inner pulley 1131 and an outer pulley 1132 that are coaxially connected, the inner pulley 1131 is connected to the first transmission belt 161, and the outer pulley 1132 is connected to the second transmission belt 162.

[0050] Through this arrangement, the number of pulleys in the pulley reversing mechanism 100 is reduced, and the transmission structure of the pulley reversing mechanism 100 is simplified.

[0051] In other embodiments, the second synchronous wheel 113 may also transmit power to the second transmission belt 162 by gear meshing.

[0052] In some embodiments of the present application, the output wheel 140 and the second driven wheel 132 are both drivingly connected to the inner side of the output transmission belt 163 , and the first driven wheel 122 is drivingly connected to the outer side of the output transmission belt 163 .

[0053] The output drive belt 163 includes an inner side 1631 and an outer side 1632 . The output wheel 140 and the second driven wheel 132 are both connected to the inner side 1631 to support the output drive belt 163 from the inside. The first driven wheel 122 is connected to the outer side 1632 .

[0054] Through this arrangement, the second driven wheel 132 and the output wheel 140 can rotate in the same direction, and the first driven wheel 122 and the output wheel 140 can rotate in the opposite directions. The second driven wheel 132, the output wheel 140 and the output transmission belt 163 have a larger contact area and can withstand a larger load generated during the conveying process of the material belt.

[0055] In other embodiments, the output wheel 140 may be in transmission connection with the outer side surface 1632 of the belt, which can be flexibly adjusted according to the environment and the requirements of material conveying.

[0056] In some embodiments of the present application, the pulley reversing mechanism 100 further includes a third driven pulley 150 which is transmission-connected to the output transmission belt 163 .

[0057] As an example form, the third driven wheel 150 is drivingly connected to the inner side surface 1631 of the belt; as another example form, the third driven wheel 150 may also be drivingly connected to the outer side surface 1632 of the belt; the number of third driven wheels 150 may be one or more.

[0058] By setting the third driven wheel 150, the output transmission belt 163 can drive other driven wheels to rotate, and then drive the corresponding rollers to rotate, so that other rollers also have the power to convey the material belt, reducing the load of the power roller 210 corresponding to the output wheel 140.

[0059] In other embodiments, the third driven wheel 150 may not be provided to simplify the structure of the pulley reversing mechanism 100 .

[0060] like Figure 4 As shown, the roller transmission device 200 of some embodiments of the present application uses a pulley reversing mechanism 100, including a power roller 210, which is transmission-connected to the output wheel 140 and driven by the output wheel 140 to rotate synchronously.

[0061] In some embodiments of the present application, the roller transmission device 200 is used for the pole piece slitting operation, the power roller 210 is connected to two winding mechanisms, the winding mechanism includes a contact roller 220 and a winding roller 230, the power roller 210 is used to drive the two sub-pole sheet strips 300 formed by the pole sheet strip slitting to move forward, and each sub-pole sheet strip 300 is sent to the corresponding contact roller 220, and after a series of tests and adjustments, it is wound by the winding roller 230. Through the reversing rotation of the power roller 210, clockwise winding and counterclockwise winding can be achieved respectively.

[0062] In other embodiments, the roller transmission device 200 may also be used for other forms of material belt conveying operations, and the reversing rotation of the power roller 210 is used to switch the conveying direction of the material belt.

[0063] With this arrangement, the power roller 210 is used to drive the material belt to move forward and provide power for conveying the material belt. The output wheel 140 changes direction to drive the power roller 210 to change direction synchronously, thereby switching the conveying direction of the material belt.

[0064] The working principle of the pulley reversing mechanism 100 of the embodiment of the present application is as follows:

[0065] The output shaft of the motor 111 rotates in the first direction P, driving the first synchronous wheel 112 to rotate in the first direction P. The first synchronous wheel 112 drives the second synchronous wheel 113 to rotate in the first direction P through the first transmission belt 161. The second synchronous wheel 113 drives the first driving wheel 121 and the second driving wheel 131 to rotate in the first direction P through the second transmission belt 162.

[0066] When the first transmission wheel assembly 120 is in a powered-on state and the second transmission wheel assembly 130 is in a powered-off state, the first driving wheel 121 drives the first driven wheel 122 to rotate along the first direction P, and the first driven wheel 122 drives the output wheel 140 to rotate in the opposite direction of the first direction P through the output transmission belt 163;

[0067] When the first transmission wheel assembly 120 is in a power-off state and the second transmission wheel assembly 130 is in a power-on state, the second driving wheel 131 drives the second driven wheel 132 to rotate along the first direction P, and the second driven wheel 132 drives the output wheel 140 to rotate in the same direction along the first direction P through the output transmission belt 163.

[0068] When the output shaft of the motor 111 always rotates in the first direction P, the reversing rotation of the output wheel 140 is achieved by controlling the clutch on and off of the first transmission wheel assembly 120 and the second transmission wheel assembly 130, thereby overcoming the undesirable phenomenon of uneven tension of the material belt caused by synchronous control of multiple motors, simplifying the structure of the entire transmission system, and improving the conveying quality of the material belt.

[0069] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

[0070] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pulley reversing mechanism (100), characterized in that: include: Output wheel (140); A first transmission wheel assembly (120) comprises a first driving wheel (121) and a first driven wheel (122), wherein the first driving wheel (121) and the first driven wheel (122) are detachably connected; A second transmission wheel assembly (130), comprising a second driving wheel (131) and a second driven wheel (132), wherein the second driving wheel (131) and the second driven wheel (132) are detachably connected; A driving assembly (110) for driving the first driving wheel (121) and the second driving wheel (131) to rotate in the same direction; The first driven wheel (122), the second driven wheel (132) and the output wheel (140) are connected in transmission via an output transmission belt (163); the first driven wheel (122) can rotate in the opposite direction to the output wheel (140), and the second driven wheel (132) can rotate in the same direction as the output wheel (140); When the first driving wheel (121) and the first driven wheel (122) are engaged, and the second driving wheel (131) and the second driven wheel (132) are separated, the first driving wheel (121) drives the first driven wheel (122) to rotate, and the first driven wheel (122) drives the output wheel (140) to rotate in the opposite direction through the output transmission belt (163); When the first driving wheel (121) and the first driven wheel (122) are separated and the second driving wheel (131) and the second driven wheel (132) are engaged, the second driving wheel (131) drives the second driven wheel (132) to rotate, and the second driven wheel (132) drives the output wheel (140) to rotate in the same direction through the output transmission belt (163).

2. The pulley reversing mechanism (100) according to claim 1, characterized in that: The output wheel (140) and the second driven wheel (132) are both in transmission connection with the inner side surface of the output transmission belt (163), and the first driven wheel (122) is in transmission connection with the outer side surface of the output transmission belt (163).

3. The pulley reversing mechanism (100) according to claim 1, characterized in that: The driving assembly (110) comprises: Motor (111); A first synchronous wheel (112) and a second synchronous wheel (113); The output shaft of the motor (111) is transmission-connected to the first synchronous wheel (112); the first synchronous wheel (112) and the second synchronous wheel (113) are transmission-connected via a first transmission belt (161); the second synchronous wheel (113), the first driving wheel (121) and the second driving wheel (131) are transmission-connected via a second transmission belt (162).

4. The pulley reversing mechanism (100) according to claim 3, characterized in that: When the first driving wheel (121) and the first driven wheel (122) are in an engaged state, and the second driving wheel (131) and the second driven wheel (132) are in a separated state, the motor (111) is configured to rotate in a first direction to drive the output wheel (140) to rotate in a direction opposite to the first direction; When the first driving wheel (121) and the first driven wheel (122) are in a separated state, and the second driving wheel (131) and the second driven wheel (132) are in an engaged state, the motor (111) is configured to rotate in a first direction to drive the output wheel (140) to rotate in the first direction.

5. The pulley reversing mechanism (100) according to claim 3, characterized in that: The first synchronous wheel (112) and the second synchronous wheel (113) are both in transmission connection with the inner side surface of the first transmission belt (161).

6. The pulley reversing mechanism (100) according to claim 3, characterized in that: The second synchronous wheel (113), the first driving wheel (121) and the second driving wheel (131) are all in transmission connection with the inner side surface of the second transmission belt (162).

7. The pulley reversing mechanism (100) according to claim 3, characterized in that: The second synchronous wheel (113) comprises an inner pulley (1131) and an outer pulley (1132) which are coaxially connected, the inner pulley (1131) being connected to the first transmission belt (161) in transmission, and the outer pulley (1132) being connected to the second transmission belt (162) in transmission.

8. The pulley reversing mechanism (100) according to claim 1, characterized in that: The first driving wheel (121) and the first driven wheel (122) are coaxially connected by electromagnetic clutch; when the first transmission wheel assembly (120) is in a powered-on state, the first driving wheel (121) drives the first driven wheel (122) to rotate synchronously; when the first transmission wheel assembly (120) is in a powered-off state, the first driving wheel (121) and the first driven wheel (122) rotate independently of each other; The second driving wheel (131) and the second driven wheel (132) are coaxially connected by electromagnetic clutch; when the second transmission wheel assembly (130) is in a powered-on state, the second driving wheel (131) drives the second driven wheel (132) to rotate synchronously; when the second transmission wheel assembly (130) is in a powered-off state, the second driving wheel (131) and the second driven wheel (132) rotate independently of each other.

9. The pulley reversing mechanism (100) according to claim 1, characterized in that: The pulley reversing mechanism (100) further comprises: The third driven wheel (150) is drivingly connected to the output transmission belt (163).

10. A roller transmission device (200) using the pulley reversing mechanism (100) according to any one of claims 1 to 9, characterized in that: include: The power roller (210) is drivingly connected to the output wheel (140) and is driven by the output wheel (140) to rotate synchronously.

Images