A structure of a synchronous pulley combined with a clutch

Abstract

This utility model relates to a structure for a transmission box that integrates a synchronous pulley with a clutch. It solves the technical problems of existing transmission boxes, such as bulky internal structures and the tendency for power transmission interruptions to occur between independent components. It includes a transmission box body with a track connection port at one end. The inner side of one end of the transmission box body has a pulley mounting seat with an open upper end and a pulley mounting cavity. One side of the pulley mounting seat has a notch. A pulley body is mounted inside the pulley mounting seat via a first rotating mounting mechanism. A pulley drive gear is mounted at the upper open end of the pulley mounting seat via a second rotating mounting mechanism. The pulley drive gear and the pulley body are vertically aligned and connected by a one-way clutch mechanism. The advantages are: It adopts a concealed integrated design, integrating multiple functional components within a limited space, resulting in a compact and reasonable structural layout and high space utilization. The one-way clutch mechanism is built-in between the pulley body and the pulley drive gear, eliminating the need for an additional clutch bracket and saving internal space within the transmission box.

Description

Technical Field

[0001] This utility model belongs to the technical field of transmission box equipment, specifically relating to a structure for the engagement of a synchronous belt pulley and a clutch in a transmission box. Background Technology

[0002] Synchronous pulleys, as common power transmission components in gearboxes, achieve precise power transmission through meshing with synchronous belts and are widely used in various mechanical devices requiring stable transmission ratios. However, in practical applications, synchronous pulleys often need to cooperate with clutch mechanisms to achieve power disconnection and engagement, or to meet the needs of unidirectional transmission. However, current technologies rarely integrate synchronous pulley transmission with unidirectional clutch functionality into a single design. Most systems use separate synchronous pulleys and clutch mechanisms, mounted separately with independent brackets and connectors. This results in a bulky internal structure of the gearbox, occupying excessive space, and the connection between these independent components is prone to power transmission interruptions. Summary of the Invention

[0003] The purpose of this invention is to address the above-mentioned problems by providing a structure in which the synchronous pulley of the transmission box is engaged with the clutch.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a structure for engaging a synchronous pulley and clutch in a transmission box, comprising a transmission box body with a track connection port at one end; a pulley mounting seat with an open upper end and a pulley mounting cavity on the inner side of the end of the transmission box body away from the track connection port; a notch on one side of the pulley mounting seat for connecting the pulley mounting cavity to the track connection port; a pulley body mounted inside the pulley mounting seat via a first rotating mounting mechanism; and a pulley drive gear connected to a pulley drive mechanism located on the inner side of the end of the transmission box away from the track connection port via a second rotating mounting mechanism at the upper open end of the pulley mounting seat; the pulley drive gear and the pulley body are vertically aligned and connected by a one-way clutch mechanism. The one-way clutch mechanism enables controllable connection between the pulley drive gear and the pulley body, meeting the requirements of one-way transmission or power disconnection / engagement in the transmission system, thus improving the practicality of the structure.

[0005] In the aforementioned structure of a transmission box synchronous pulley and clutch engagement, the first rotating mounting mechanism includes a mounting cylinder disposed at the bottom of the pulley mounting seat. The pulley body is sleeved on the outer circumferential side of the upper end of the mounting cylinder via a first mounting bearing. Through the combination of the mounting cylinder and the first mounting bearing, the pulley body is sleeved on the outside of the mounting cylinder. The rotational characteristics of the bearing ensure the flexible rotation of the pulley body, while the mounting cylinder provides a stable support foundation, reducing radial wobble during pulley rotation. The rotational connection achieved by using a bearing sleeve is simple and mature in structure, easy to process and assemble, and reduces the probability of mechanical failure.

[0006] In the aforementioned structure of a transmission box with a synchronous pulley and clutch engagement, several limiting blocks are provided on the outer circumference of the lower end of the mounting cylinder. These limiting blocks are all of the same height and are integrally integrated with the mounting cylinder. This integral design, with the limiting blocks of the same height, precisely limits the mounting position of the cylinder at the bottom of the pulley mounting seat, preventing axial displacement. Furthermore, the integrated structure enhances the overall strength, preventing the limiting blocks from detaching under stress. The distribution of these limiting blocks on the outer circumference of the mounting cylinder ensures force balance, further improving the stability of the mounting cylinder.

[0007] In the aforementioned structure of a transmission box with a synchronous pulley and clutch, the transmission box is a split structure with a detachably connected power box and pulley box. The pulley drive mechanism is located in the power box, and the pulley mounting seat is located in the pulley box. The detachable connection between the power box and the pulley box allows for independent installation, maintenance, and replacement of the pulley drive mechanism and pulley mounting seat without overall disassembly, reducing maintenance costs and operational difficulty. Simultaneously, the power box focuses on power output, while the pulley box focuses on pulley installation and transmission; this clear division of labor facilitates optimized design for different functional areas.

[0008] In the aforementioned structure of a transmission box with a synchronous pulley and clutch, the pulley drive mechanism includes a motor located on the inner side of the power box housing at the end furthest from the pulley housing. The motor's output shaft is connected to a transmission gear located on the inner side of the power box housing at the end closest to the pulley housing, and the transmission gear meshes with the pulley drive gear. Stable power transmission is achieved through the meshing of the motor-output shaft-transmission gear-pulley drive gear. This gear meshing transmission method features precise transmission ratios and high efficiency, making it suitable for scenarios requiring precise speed control. Furthermore, the motor and transmission gear are respectively located on the inner sides of both ends of the power box housing, fully utilizing the housing space and resulting in a compact overall structure that saves installation space.

[0009] In the aforementioned structure of a transmission box synchronous pulley and clutch engagement, the one-way clutch mechanism includes a clutch base plate disposed on the upper end of the mounting cylinder. The clutch base plate is located circumferentially inside the pulley body. A clutch portion, corresponding to the clutch base plate, is located circumferentially inside the lower end of the pulley drive gear. Two magnetic balls are disposed between the clutch base plate and the clutch portion. An annular groove is located circumferentially outside the upper end of the pulley body, and a magnetic ring is disposed within the annular groove. Through the cooperation of the clutch base plate, clutch portion, magnetic balls, and magnetic ring, the position of the magnetic balls is controlled by magnetic force, achieving one-way engagement or disengagement between the pulley drive gear and the pulley body. For example, engagement occurs when the pulley drive gear rotates forward, and disengagement occurs when it rotates reverse. This eliminates the need for a complex mechanical locking structure, resulting in sensitive response and low wear. Furthermore, the magnetic drive method using magnetic balls and magnetic rings reduces rigid contact and frictional loss compared to traditional mechanical clutches, extending service life.

[0010] In the aforementioned structure of a transmission box with a synchronous pulley and clutch, the upper inner side of the mounting cylinder is provided with a fixing groove, and the lower inner side of the clutch base plate is provided with a fixing part that matches the fixing groove, with the fixing part axially inserted into the fixing groove. Through the axial insertion of the fixing part and the fixing groove, precise positioning of the clutch base plate and the mounting cylinder is achieved, ensuring that the clutch base plate and the clutch part of the pulley drive gear correspond vertically, avoiding any impact on the one-way clutch function due to positional misalignment. Simultaneously, the insertion structure facilitates assembly and can withstand a certain axial force.

[0011] In the aforementioned structure of a transmission box with a synchronous pulley and clutch, the pulley box has a mounting cavity on its inner side at the end furthest from the track connection port. The upper end of the pulley box is provided with a pulley box cover that encloses the mounting cavity. The pulley mounting seat is disposed within the mounting cavity, and the pulley mounting seat has a circumferential outer portion, with the pulley mounting cavity located inside the outer portion. The pulley mounting seat is positioned within the enclosed mounting cavity, and the pulley box cover seals the mounting cavity, effectively preventing dust, water, or foreign objects from entering, protecting the internal pulley, clutch mechanism, and other components, and improving the structure's durability. Simultaneously, the internal and external layout of the outer portion and the pulley mounting cavity provides independent mounting space for the pulley and enhances the overall strength of the pulley mounting seat through the outer portion, adapting to the compact environment inside the transmission box.

[0012] In the aforementioned structure of a transmission box synchronous pulley and clutch engagement, the second rotating mounting mechanism includes a connecting shaft disposed on the pulley box cover near the pulley box body and corresponding to the pulley drive gear. The connecting shaft is located circumferentially inward of the upper end of the pulley drive gear, and a second mounting bearing sleeve is provided between the connecting shaft and the pulley drive gear. The connecting shaft extends from the pulley box cover to the inner side of the pulley drive gear, cooperating with the second mounting bearing to provide rotational support for the pulley drive gear. This forms a symmetrical support structure with the first rotating mounting mechanism, ensuring the coaxiality of the pulley drive gear during rotation, reducing shaking and noise. Furthermore, since the connecting shaft is located on the pulley box cover, when the pulley box cover is disassembled, the relevant components of the pulley drive gear can be removed simultaneously for easy maintenance.

[0013] In the aforementioned structure of a transmission box with a synchronous pulley and clutch, the pulley housing has a gear opening at the end furthest from the track connection port, which connects to the mounting cavity. This gear opening corresponds to the pulley drive gear, and the outer side of the pulley drive gear protrudes through the gear opening to the outside of the pulley housing. The gear opening provides meshing space between the pulley drive gear and the transmission gear in the power box, ensuring stable transmission between the two gears even in different housings, thus solving the power connection problem in split-type housings.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] 1. The device adopts a built-in integrated design, which integrates multiple functional components in a limited space. The structure is compact and reasonable, and the space utilization rate is high. The one-way clutch mechanism is built between the pulley body and the pulley drive gear, eliminating the need for an additional clutch bracket and saving internal space of the housing.

[0016] 2. This device utilizes a one-way clutch mechanism. When the pulley drives the gear to rotate in the forward direction, the magnetic ball can engage the clutch base plate with the clutch part under the action of magnetic force, thereby driving the pulley to rotate. When the pulley drives the gear to rotate in the reverse direction, the magnetic ball disengages, and the pulley will not rotate accordingly, thus achieving precise control of one-way transmission.

[0017] 3. The pulley body of the device is sleeved on the outer circumference of the upper end of the mounting cylinder through the first mounting bearing, and the pulley drive gear is connected to the connecting shaft through the second mounting bearing. The use of bearings reduces the frictional resistance during the rotation of the components, making the rotation smoother, improving the power transmission efficiency, and also reducing the wear of the components and extending their service life.

[0018] 4. The transmission housing of this device adopts a split structure, consisting of a detachable power housing and a pulley housing. This design facilitates the separate installation of components such as the pulley drive mechanism and pulley mounting base into their respective housings, reducing the overall assembly difficulty. At the same time, when a component malfunctions, the corresponding housing can be disassembled for repair or replacement without disassembling the entire transmission housing, greatly improving the convenience of maintenance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a diagram of the internal structure of this utility model.

[0021] Figure 3 This is an exploded view of the structure of this utility model.

[0022] Figure 4 This is a structural schematic diagram of the pulley mounting base in this utility model.

[0023] Figure 5 This is a schematic diagram of the structure of the wheeled box cover in this utility model.

[0024] Figure 6 This is a schematic diagram of the pulley drive gear in this utility model.

[0025] Figure 7 This is a schematic diagram of the clutch base plate in this utility model.

[0026] In the diagram: 1. Transmission housing; 11. Track connection port; 12. Pulley drive mechanism; 13. Power housing; 14. Pulley housing; 15. Motor; 16. Transmission gear; 17. Mounting cavity; 18. Pulley housing cover; 19. Gear opening; 2. Pulley mounting seat; 21. Pulley mounting cavity; 22. Notch; 23. Pulley body; 24. Pulley drive gear; 25. Peripheral part; 3. First rotating mounting mechanism; 3. Mounting cylinder; 31. First mounting bearing; 32. Limiting block; 33. Fixing groove; 35. Fixing part; 4. Second rotating mounting mechanism; 41. Connecting shaft; 42. Second mounting bearing; 5. One-way clutch mechanism; 51. Clutch base plate; 52. Clutch part; 53. Magnetic ball; 54. Annular groove; 55. Magnetic ring. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 1-7As shown, a transmission box with a synchronous pulley and clutch engagement structure includes a transmission box body 1 with a track connection port 11 at one end. A pulley mounting seat 2 with an open upper end and a pulley mounting cavity 21 is located on the inner side of the end of the transmission box body 1 away from the track connection port 11. One side of the pulley mounting seat 2 has a notch 22 for connecting the pulley mounting cavity 21 to the track connection port 11. A pulley body 23 is mounted inside the pulley mounting seat 2 via a first rotating mounting mechanism 3. A pulley drive gear 24, connected to a pulley drive mechanism 12 located on the inner side of the end of the transmission box body 1 away from the track connection port 11, is located at the upper open end of the pulley mounting seat 2 via a second rotating mounting mechanism 4. The pulley drive gear 24 and the pulley body 23 are vertically aligned and connected by a one-way clutch mechanism 5. The one-way clutch mechanism 5 enables a controllable connection between the pulley drive gear 24 and the pulley body 23, meeting the requirements of one-way transmission or power disconnection / engagement in the transmission system, thus improving the practicality of the structure.

[0029] Combination Figure 3 and Figure 4 As shown, the first rotating mounting mechanism 3 includes a mounting cylinder 31 disposed at the bottom of the pulley mounting seat 2, and the pulley body 23 is sleeved on the outer circumferential side of the upper end of the mounting cylinder 31 via a first mounting bearing 32. Through the combination of the mounting cylinder 31 and the first mounting bearing 32, the pulley body 23 is sleeved on the outside of the mounting cylinder 31. The rotational characteristics of the bearing ensure the flexible rotation of the pulley body 23, while the mounting cylinder 31 provides a stable support foundation, reducing radial wobble during pulley body 23 rotation. The rotational connection achieved by using a bearing sleeve is simple and mature in structure, easy to process and assemble, and reduces the probability of mechanical failure.

[0030] The mounting cylinder 31 has several limiting blocks 33 arranged on its lower circumferential outer side. The limiting blocks 33 are all the same height and are integrated with the mounting cylinder 31. The design of the limiting blocks 33 being the same height and integrated with the mounting cylinder 31 can not only accurately limit the installation position of the mounting cylinder 31 at the bottom of the pulley mounting seat 2 to prevent axial displacement, but also enhance the overall strength through the integrated structure, preventing the limiting blocks from falling off due to force. At the same time, the distribution of several limiting blocks 33 on the outer circumference of the mounting cylinder 31 ensures force balance and further improves the stability of the mounting cylinder 31.

[0031] Combination Figure 1 and Figure 2As shown, the transmission housing 1 has a split structure and includes a detachably connected power housing 13 and pulley housing 14. The pulley drive mechanism 12 is located within the power housing 13, and the pulley mounting seat 2 is located within the pulley housing 14. The detachable connection between the power housing 13 and the pulley housing 14 allows for independent installation, maintenance, and replacement of the pulley drive mechanism 12 and the pulley mounting seat 2 without requiring overall disassembly, thus reducing maintenance costs and operational difficulty. Simultaneously, the power housing 13 focuses on power output, while the pulley housing 14 focuses on pulley installation and transmission. This clear division of labor facilitates optimized design for different functional areas.

[0032] The pulley drive mechanism 12 includes a motor 15 located inside the power housing 13 at the end furthest from the pulley housing 14. The output shaft of the motor 15 is connected to a transmission gear 16 located inside the power housing 13 at the end closest to the pulley housing 14, and the transmission gear 16 meshes with the pulley drive gear 24. Stable power transmission is achieved through the meshing of the motor 15-output shaft-transmission gear 16-pulley drive gear 24. This gear meshing transmission method features precise transmission ratio and high efficiency, making it suitable for scenarios requiring precise speed control. Furthermore, the motor 15 and transmission gear 16 are respectively located inside the two ends of the power housing 13, fully utilizing the housing space and resulting in a compact overall structure that saves installation space.

[0033] Combination Figure 3 and Figure 6 As shown, the one-way clutch mechanism 5 includes a clutch base plate 51 disposed on the upper end of the mounting cylinder 31. The clutch base plate 51 is disposed on the inner side of the pulley body 23. The lower end of the pulley drive gear 24 is provided with a clutch part 52 located on the inner side of the pulley body 23 and corresponding to the clutch base plate 51. Two magnetic ball pieces 53 are provided between the clutch base plate 51 and the clutch part 52. The upper end of the pulley body 23 is provided with an annular groove 54 on the outer side, and a magnetic ring piece 55 is provided in the annular groove 54. Through the cooperation of the clutch base plate 51, clutch part 52, magnetic ball 53 and magnetic ring 55, the position of the magnetic ball 53 is controlled by magnetic force to realize the unidirectional engagement or disengagement of the pulley drive gear 24 and the pulley body 23. For example, the pulley drive gear 24 engages when rotating forward and disengages when rotating in reverse. There is no need for a complex mechanical locking structure. The response is sensitive and the wear is small. Moreover, the magnetic drive method of the magnetic ball 53 and magnetic ring 55 reduces rigid contact and friction loss compared with the traditional mechanical clutch, and extends the service life.

[0034] Combination Figure 4 and Figure 7As shown, the upper inner side of the mounting cylinder 31 is provided with a fixing groove 34, and the lower inner side of the clutch base plate 51 is provided with a fixing part 35 that matches the fixing groove 34, and the fixing part 35 is axially inserted into the fixing groove 34. Through the axial insertion and cooperation of the fixing part 35 and the fixing groove 34, the clutch base plate 51 and the mounting cylinder 31 are accurately positioned, ensuring that the clutch base plate 51 and the clutch part 52 of the pulley drive gear 24 correspond vertically, avoiding the impact of positional misalignment on the one-way clutch function. At the same time, the insertion structure facilitates assembly and can withstand a certain axial force.

[0035] like Figure 3 As shown, the pulley housing 14 has an inner mounting cavity 17 on the side away from the track connection port 11. The upper end of the pulley housing 14 is provided with a pulley housing cover 18 that encloses the mounting cavity 17. The pulley mounting seat 2 is disposed within the mounting cavity 17, and the pulley mounting seat 2 has a circumferential outer portion 25, with the pulley mounting cavity 21 located inside the outer portion 25. The pulley mounting seat 2 is disposed within the enclosed mounting cavity 17, and the pulley housing cover 18 encloses the mounting cavity 17, effectively preventing dust, water, or foreign objects from entering, protecting the internal pulley body 23, clutch mechanism, and other components, and improving the durability of the structure. Simultaneously, the internal and external layout of the outer portion 25 and the pulley mounting cavity 21 provides an independent mounting space for the pulley body 23, while also enhancing the overall strength of the pulley mounting seat 2 through the outer portion 25, adapting to the compact environment inside the housing.

[0036] Combination Figure 3 and Figure 5 As shown, the second rotating mounting mechanism 4 includes a connecting shaft 41 disposed on the side of the pulley housing cover 18 near the pulley housing 14 and corresponding to the pulley drive gear 24. The connecting shaft 41 is located on the circumferential inner side of the upper end of the pulley drive gear 24, and a second mounting bearing 42 is provided between the connecting shaft 41 and the pulley drive gear 24. The connecting shaft 41 extends from the pulley housing cover 18 to the inner side of the pulley drive gear 24, and cooperates with the second mounting bearing 42 to realize the rotational support of the pulley drive gear 24, forming a symmetrical support structure with the first rotating mounting mechanism 3, ensuring the coaxiality of the pulley drive gear 24 when rotating, reducing shaking and noise. At the same time, the connecting shaft 41 is disposed on the pulley housing cover 18, so that when the pulley housing cover 18 is removed, the relevant components of the pulley drive gear 24 can be removed simultaneously for easy maintenance.

[0037] Combination Figure 2 and Figure 3As shown, the pulley housing 14 has a gear opening 19 at the end away from the track connection port 11, which is connected to the mounting cavity 17. The gear opening 19 corresponds to the pulley drive gear 24, and the outer side of the pulley drive gear 24 protrudes to the outside of the pulley housing 14 through the gear opening 19. The gear opening 19 provides meshing space for the pulley drive gear 24 and the transmission gear 16 in the power housing 13, ensuring that the two gears can still transmit stably in different housings, thus solving the power connection problem of the split housing.

[0038] The principle of this embodiment is as follows:

[0039] The motor 15 serves as the power source, and its output shaft rotates, driving the connected transmission gear 16 to rotate. The transmission gear 16 meshes with the pulley drive gear 24, and the connection across the pulley housing 14 is achieved through the gear opening 19. Therefore, the rotation of the transmission gear 16 will drive the pulley drive gear 24 to rotate synchronously. The pulley drive gear 24 is set below the pulley housing cover 18 through the connecting shaft 41 and the second mounting bearing 42 to ensure stable rotation without deviation. The clutch base plate 51 is fixed to the upper end of the mounting cylinder 31 and located inside the pulley body 23. The clutch part 52 at the lower end of the pulley drive gear 24 corresponds vertically to the clutch base plate 51, and two magnetic balls 53 are provided between them. A magnetic ring 55 is provided in the annular groove 54 at the upper end of the pulley body 23 to magnetically attract the magnetic balls 53. When the pulley drive gear 24 rotates in a certain direction, the clutch part 52 rotates synchronously with it, pushing the magnetic balls 53 to move towards the locking position between the clutch base plate 51 and the clutch part 52. At this time, the attraction force of the magnetic ring 55 enhances the locking effect of the magnetic ball 53, causing the clutch part 52 to drive the clutch base plate 51 to rotate synchronously through the magnetic ball 53. Since the clutch base plate 51 is fixed to the mounting cylinder 31, and the pulley 23 is sleeved on the outside of the mounting cylinder 31 through the first mounting bearing 32, the pulley 23 is eventually driven to rotate, realizing the power output of the synchronous belt. When the pulley drive gear 24 rotates in the opposite direction, the movement direction of the clutch part 52 causes the magnetic ball 53 to disengage from the locking position. The attraction force of the magnetic ring 55 is insufficient to drive the pulley 23 to rotate. At this time, the pulley drive gear 24 idles, and the pulley 23 remains stationary due to inertia or external load, realizing the one-way clutch function.

[0040] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0041] Although this document frequently uses terms such as transmission housing 1, track connection port 11, pulley drive mechanism 12, power housing 13, pulley housing 14, motor 15, transmission gear 16, mounting cavity 17, pulley housing cover 18, gear opening 19, pulley mounting seat 2, pulley mounting cavity 21, notch 22, pulley body 23, pulley drive gear 24, peripheral part 25, first rotating mounting mechanism 3, mounting cylinder 31, first mounting bearing 32, limiting block 33, fixing groove 34, fixing part 35, second rotating mounting mechanism 4, connecting shaft 41, second mounting bearing 42, one-way clutch mechanism 5, clutch base plate 51, clutch part 52, magnetic ball 53, annular groove 54, magnetic ring 55, etc., the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A structure for engaging a synchronous pulley and clutch in a transmission box, comprising a transmission box body (1) having a track connection port (11) at one end, characterized in that, The transmission housing (1) has a pulley mounting seat (2) with an open upper end and a pulley mounting cavity (21) on the inner side of one end away from the track connection port (11). The pulley mounting seat (2) has a notch (22) on one side for connecting the pulley mounting cavity (21) with the track connection port (11). The pulley body (23) is provided in the pulley mounting seat (2) through a first rotating mounting mechanism (3). The pulley mounting seat (2) has a pulley drive gear (24) at the open upper end through a second rotating mounting mechanism (4) connected to the pulley drive mechanism (12) located on the inner side of the transmission housing (1) away from the track connection port (11). The pulley drive gear (24) and the pulley body (23) are vertically aligned and connected by a one-way clutch mechanism (5).

2. The structure of a transmission box synchronous belt pulley and clutch engagement according to claim 1, characterized in that, The first rotating mounting mechanism (3) includes a mounting cylinder (31) disposed at the bottom of the pulley mounting seat (2), and the pulley body (23) is sleeved on the upper circumferential outer side of the mounting cylinder (31) through the first mounting bearing (32).

3. The structure of the transmission box synchronous pulley and clutch engagement according to claim 2, characterized in that, The mounting cylinder (31) has several limiting blocks (33) on its lower circumferential outer side. The limiting blocks (33) are of the same height and are all integrated with the mounting cylinder (31).

4. The structure for engaging the synchronous pulley and clutch in a transmission box according to claim 2 or 3, characterized in that, The transmission housing (1) has a split structure and has a power housing (13) and a pulley housing (14) that can be detachably connected. The pulley drive mechanism (12) is located in the power housing (13) and the pulley mounting seat (2) is located in the pulley housing (14).

5. The structure for engaging the synchronous pulley and clutch in a transmission box according to claim 4, characterized in that, The pulley drive mechanism (12) includes a motor (15) located on the inner side of the power housing (13) away from the pulley housing (14). The output shaft of the motor (15) is connected to a transmission gear (16) located on the inner side of the power housing (13) near the pulley housing (14), and the transmission gear (16) meshes with the pulley drive gear (24).

6. The structure for engaging the synchronous pulley and clutch in a transmission box according to claim 4, characterized in that, The one-way clutch mechanism (5) includes a clutch base plate (51) disposed on the upper end of the mounting cylinder (31). The clutch base plate (51) is disposed on the inner side of the pulley body (23). The lower end of the pulley drive gear (24) is provided with a clutch part (52) located on the inner side of the pulley body (23) and corresponding to the clutch base plate (51). Two magnetic ball pieces (53) are provided between the clutch base plate (51) and the clutch part (52). The upper end of the pulley body (23) is provided with an annular groove (54) on the outer side, and a magnetic ring piece (55) is provided in the annular groove (54).

7. The structure for engaging the synchronous pulley and clutch in a transmission box according to claim 6, characterized in that, The upper inner side of the mounting cylinder (31) is provided with a fixing groove (34), and the lower inner side of the clutch base plate (51) is provided with a fixing part (35) that matches the fixing groove (34), and the fixing part (35) is axially inserted into the fixing groove (34).

8. The structure for engaging the synchronous pulley and clutch in a transmission box according to claim 4, characterized in that, The pulley housing (14) has an inner cavity (17) on the side away from the track connection port (11). The pulley housing (14) has a pulley housing cover (18) that closes the installation cavity (17) on the upper end. The pulley mounting seat (2) is set in the installation cavity (17). The pulley mounting seat (2) has a peripheral part (25) around its circumference, and the pulley mounting cavity (21) is located inside the peripheral part (25).

9. The structure for engaging the synchronous pulley and clutch in a transmission box according to claim 8, characterized in that, The second rotating mounting mechanism (4) includes a connecting shaft (41) disposed on the side of the pulley box cover (18) near the pulley box body (14) and corresponding to the pulley drive gear (24). The connecting shaft (41) is located on the inner side of the upper end of the pulley drive gear (24), and a second mounting bearing (42) is provided between the connecting shaft (41) and the pulley drive gear (24).

10. The structure for engaging the synchronous pulley and clutch in a transmission box according to claim 8, characterized in that, The pulley housing (14) has a gear opening (19) connected to the mounting cavity (17) at one end away from the track connection port (11). The gear opening (19) corresponds to the pulley drive gear (24), and the outer side of the pulley drive gear (24) protrudes to the outer side of the pulley housing (14) through the gear opening (19).

Images