Transmission and low-dust breaker

Abstract

The application provides a transmission device and a low-dust crusher and belongs to the technical field of transmission. In the transmission device, a first bevel gear is connected to a first shaft body. A second bevel gear and a third bevel gear are arranged on a second shaft body. The second bevel gear and the third bevel gear are engaged with the first bevel gear. A first ratchet wheel and a second ratchet wheel are connected to the second shaft body. The second bevel gear is provided with a first rotating column, and the first rotating column is connected with a first pawl to form a first ratchet wheel mechanism. The third bevel gear is provided with a second rotating column, and the second rotating column is fixedly connected with a second pawl to form a second ratchet wheel mechanism. The ratchet teeth directions of the first ratchet wheel and the second ratchet wheel are the same, so that only one of the second bevel gear and the third bevel gear can drive the second shaft body when the first shaft body is actuated. The two driving modes of bidirectional driving and unidirectional driving are integrated, the structure is more compact, the close cooperation of the two driving modes is realized, and the difficulty of cooperative control is reduced.

Description

Technical Field

[0001] This application relates to the field of transmission technology, and more specifically, to a transmission device and a low-dust crusher. Background Technology

[0002] In actual production, scenarios often involve a mix of bidirectional and unidirectional rotation. Typically, this requires two separate power systems, one for bidirectional drive and one for unidirectional drive, resulting in a larger power system size, increased costs, and a higher maintenance workload.

[0003] Furthermore, to ensure the coordinated operation of each component, precise control is required over the collaborative relationship and rhythm between the bidirectional and unidirectional drive mechanisms. This significantly increases the demands for synchronous and coordinated control, often making the entire system quite complex. Summary of the Invention

[0004] The first objective of this application is to provide a transmission device that integrates both bidirectional and unidirectional drive methods, resulting in a more compact structure and achieving close coordination between the two drive methods, thereby reducing the difficulty of coordinated control.

[0005] The second objective of this application is to provide a low-dust crusher that effectively improves dust control during the crushing process, eliminates the need for additional dust removal equipment, and maintains a low-dust effect for an extended period.

[0006] The embodiments of this application are implemented as follows:

[0007] A transmission device includes: a first shaft, a first bevel gear, a second shaft, a second bevel gear, a third bevel gear, a first ratchet, and a second ratchet.

[0008] The first bevel gear is coaxially and fixedly connected to the first shaft.

[0009] Both the second and third bevel gears are coaxially mounted with the second shaft, which passes through both gears. Both gears are rotatably fitted onto the second shaft. The second and third bevel gears are positioned facing each other and spaced apart.

[0010] The first shaft is perpendicular to the second shaft, and the first bevel gear is located between the second bevel gear and the third bevel gear. Both the second bevel gear and the third bevel gear mesh with the first bevel gear.

[0011] The first ratchet and the second ratchet are both coaxially and fixedly connected to the second shaft. The first ratchet is located near the second bevel gear, and the second ratchet is located near the third bevel gear.

[0012] A first rotating post is provided on the side of the second bevel gear near the first ratchet. The rotation axis of the first rotating post is parallel to the second shaft. A first pawl is fixedly connected to the first rotating post. The first pawl is engaged with a first elastic element for pushing it toward the first ratchet to form a first ratchet mechanism.

[0013] A second rotating column is provided on the side of the third bevel gear near the second ratchet. The rotation axis of the second rotating column is parallel to the second shaft. A second pawl is fixedly connected to the second rotating column. The second pawl is engaged with a second elastic element for pushing it toward the second ratchet, thus forming the second ratchet mechanism.

[0014] The first ratchet and the second ratchet have the same ratchet tooth direction, so that when the first shaft is actuated, only one of the second bevel gear and the third bevel gear can drive the second shaft.

[0015] Furthermore, the transmission device also includes: a first cover and a second cover.

[0016] A first cover is positioned on the side of the second bevel gear furthest from the third bevel gear. The second bevel gear is rotatably fitted into the first cover, and the first cover and the second bevel gear together form a first chamber. A second shaft penetrates the first cover and is rotatably fitted into it.

[0017] A first rotating sleeve is rotatably fitted onto a second shaft. The first rotating sleeve is located within a first chamber and is connected to a first fan blade. The first rotating sleeve engages with a second bevel gear. The first chamber has a first opening and a second opening communicating with the outside. The first opening is located on the side of the first fan blade furthest from the second bevel gear, and the second opening is located on the side of the first fan blade closest to the second bevel gear.

[0018] The second cover is positioned on the side of the third bevel gear furthest from the second bevel gear. The third bevel gear is rotatably fitted into the second cover, and the second cover and the third bevel gear together form a second chamber. A second shaft penetrates the second cover and is rotatably fitted into it.

[0019] A second rotating sleeve is rotatably fitted onto a second shaft body. The second rotating sleeve is located within a second chamber and is connected to a second fan blade. The second rotating sleeve engages with a third bevel gear. The second chamber has a third opening and a fourth opening communicating with the outside. The third opening is located on the side of the second fan blade furthest from the third bevel gear, and the fourth opening is located on the side of the second fan blade closest to the third bevel gear.

[0020] Furthermore, the first ratchet is located in the first chamber, between the first rotating sleeve and the second bevel gear.

[0021] A first axial hole is formed on the end face of the second shaft away from the third bevel gear, and the first axial hole extends into the first cavity. A second opening is formed on the side wall of the second shaft and extends along the axial direction of the second shaft, and the second opening connects the first axial hole and the first cavity.

[0022] The second shaft is also fitted with a first mating sleeve, which is rotatably fitted to the second shaft. The first mating sleeve is located between the first rotating sleeve and the first ratchet. The first mating sleeve has a first threaded hole on the side near the first ratchet, which extends axially along the second shaft. The first rotating post has an external thread, which is threaded into the first threaded hole.

[0023] When the first shaft is actuated and the first pawl drives the first ratchet, the first mating sleeve is located on the side of the second opening closer to the first ratchet. When the first shaft is actuated and the first pawl does not drive the first ratchet, the first pawl is pushed up by the ratchet teeth of the first ratchet, causing the first rotating post to rotate. The first rotating post drives the first mating sleeve to move toward the side where the second opening is located through the thread, thereby reducing the opening of the second opening.

[0024] The second ratchet is located in the second chamber, between the second rotating sleeve and the third bevel gear.

[0025] A second axial hole is formed on the end face of the second shaft away from the second bevel gear, and the second axial hole extends into the second chamber. A fourth opening is formed on the side wall of the second shaft and extends along the axial direction of the second shaft, and the fourth opening connects the second axial hole and the second chamber.

[0026] The second shaft is also fitted with a second mating sleeve, which is rotatably fitted onto the second mating sleeve. The second mating sleeve is located between the second rotating sleeve and the second ratchet. A second threaded hole is provided on the side of the second mating sleeve near the second ratchet, extending axially along the second shaft. The second rotating post has external threads, which are threaded into the second threaded hole.

[0027] When the first shaft is actuated and the second pawl drives the second ratchet, the first mating sleeve is located on the side of the fourth opening closest to the second ratchet. When the first shaft is actuated and the second pawl does not drive the second ratchet, the second pawl is pushed up by the ratchet teeth of the second ratchet, causing the second rotating post to rotate. The second rotating post drives the second mating sleeve to move toward the side where the fourth opening is located through the thread, thereby reducing the opening of the fourth opening.

[0028] Furthermore, the first opening is connected to a first connecting pipe, and a first filter element is provided at the end of the first connecting pipe away from the first cover. The third opening is connected to a second connecting pipe, and a second filter element is provided at the end of the second connecting pipe away from the second cover.

[0029] Furthermore, a first groove is provided on the side of the second bevel gear away from the third bevel gear, the first ratchet is located in the first groove, and the first rotating post is engaged with the bottom wall of the first groove.

[0030] A second groove is provided on the side of the third bevel gear away from the second bevel gear, the second ratchet is located in the second groove, and the second rotating column is engaged with the bottom wall of the second groove.

[0031] Furthermore, the second bevel gear is fixedly connected to the first rotating sleeve by a first connecting rod. One end of the first connecting rod is fixedly connected to the side wall of the first rotating sleeve, and the other end of the first connecting rod is fixedly connected to the side of the second bevel gear away from the third bevel gear. The first connecting rod is located close to the edge of the first groove.

[0032] The third bevel gear and the second rotating sleeve are fixedly connected by a second connecting rod. One end of the second connecting rod is fixedly connected to the side wall of the second rotating sleeve, and the other end of the second connecting rod is fixedly connected to the side of the third bevel gear away from the second bevel gear. The second connecting rod is located close to the edge of the second groove.

[0033] Furthermore, there are multiple second openings, which are evenly spaced along the circumference of the second axis.

[0034] There are multiple fourth openings, which are evenly spaced along the circumference of the second axis.

[0035] Furthermore, there are multiple first rotating columns, which are evenly spaced along the circumference of the second bevel gear.

[0036] There are multiple second rotating columns, which are evenly spaced along the circumference of the third bevel gear.

[0037] A low-dust crusher includes: a crusher body and the aforementioned transmission device.

[0038] The first shaft of the transmission device is driven by the driver, and the second shaft of the transmission device is driven by the power shaft of the crusher body.

[0039] Both the first and second connecting pipes extend into the crushing chamber of the crusher body and are located on opposite sides of the crushing chamber.

[0040] The beneficial effects of the technical solutions in this application include:

[0041] During operation, the direction of rotation of the second shaft remains unchanged regardless of whether the first shaft rotates clockwise or counterclockwise. This integrates bidirectional and unidirectional rotation, and the bidirectional and unidirectional rotations of the transmission are completely synchronized.

[0042] In practical applications, the first shaft can be used as a bidirectional rotational power output shaft, and the second shaft can be used as a unidirectional rotational power output shaft.

[0043] Overall, the transmission device provided in this application integrates both bidirectional and unidirectional drive modes, resulting in a more compact structure. It also achieves close coordination between the two drive modes, reducing the difficulty of coordinated control.

[0044] The low-dust crusher provided in this application embodiment effectively improves the dust control effect during the crushing process, eliminating the need for additional dust removal equipment and maintaining a low-dust effect for a long time. Attached Figure Description

[0045] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 A schematic diagram of the transmission device provided in the embodiment of this application (when the opening of the second opening reaches its maximum).

[0047] Figure 2 for Figure 1 Schematic diagram of the structure of the first chamber in the middle;

[0048] Figure 3 This is a schematic diagram of the fit at the second bevel gear;

[0049] Figure 4 This is a schematic diagram of the fit at the third bevel gear;

[0050] Figure 5 for Figure 1 Schematic diagram of the structure at the second chamber;

[0051] Figure 6 This is a schematic diagram of the structure at the first chamber (when the opening of the second opening decreases);

[0052] Figure 7 A schematic diagram of the transmission device provided in the embodiment of this application (when the opening of the fourth opening reaches its maximum).

[0053] Explanation of reference numerals in the attached figures:

[0054] First shaft 100; First bevel gear 110; Second shaft 200; First axial hole 210; Second axial hole 220; First ratchet 230; Second ratchet 240; Second bevel gear 300; First rotating column 310; First pawl 320; First groove 330; Third bevel gear 400; Second rotating column 410; Second pawl 420; Second groove 430; First cover 500; First chamber 510; First rotating sleeve 520; First fan blade 530; First connecting rod 540; First opening 550; Second opening 560; First mating sleeve 570; Second cover 600; Second chamber 610; Second rotating sleeve 620; Second fan blade 630; Second connecting rod 640; Third opening 650; Fourth opening 660; Second mating sleeve 670. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0056] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0057] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0058] The terms “first,” “second,” “third,” “fourth,” etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0059] Furthermore, the terms "vertical" and "parallel" do not mean that the parts must be absolutely vertical or parallel, but can be slightly tilted.

[0060] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0061] The technical solutions of this application will be described by way of example through some embodiments below.

[0062] See Figures 1-5 This application provides a transmission device, which includes: a bracket (not shown in the figure), a first shaft 100, a first bevel gear 110, a second shaft 200, a second bevel gear 300, a third bevel gear 400, a first ratchet 230, and a second ratchet 240.

[0063] The first shaft 100 and the second shaft 200 are both rotatably mounted on the bracket. The first shaft 100 and the second shaft 200 are arranged perpendicularly.

[0064] The first bevel gear 110 is coaxially fixedly connected to the first shaft 100. In this embodiment, the first bevel gear 110 is located at the end of the first shaft 100.

[0065] Both the second bevel gear 300 and the third bevel gear 400 are coaxially arranged with the second shaft 200, which passes through both. Both the second bevel gear 300 and the third bevel gear 400 are rotatably fitted onto the second shaft 200. The second bevel gear 300 and the third bevel gear 400 are arranged facing each other and spaced apart. Along the axial direction of the second shaft 200, both the second bevel gear 300 and the third bevel gear 400 are fixedly fitted onto the second shaft 200.

[0066] The first bevel gear 110 is located between the second bevel gear 300 and the third bevel gear 400, and both the second bevel gear 300 and the third bevel gear 400 mesh with the first bevel gear 110. That is, when the first shaft 100 rotates, the first bevel gear 110 can simultaneously drive the second bevel gear 300 and the third bevel gear 400.

[0067] The first ratchet 230 and the second ratchet 240 are both coaxially fixedly connected to the second shaft 200. The first ratchet 230 is located near the second bevel gear 300, and the second ratchet 240 is located near the third bevel gear 400.

[0068] A first rotating post 310 is provided on the side of the second bevel gear 300 near the first ratchet 230, and the rotation axis of the first rotating post 310 is parallel to the second shaft 200. In this embodiment, there are multiple first rotating posts 310, and the multiple first rotating posts 310 are evenly spaced along the circumference of the second bevel gear 300.

[0069] The first rotating column 310 is fixedly connected to the first pawl 320, which is engaged with a first elastic element (not shown in the figure) for pushing it toward the first ratchet 230 to form the first ratchet 230 mechanism. The first elastic element may be a spring, but is not limited thereto.

[0070] A second rotating post 410 is provided on the side of the third bevel gear 400 near the second ratchet 240, and the rotation axis of the second rotating post 410 is parallel to the second shaft 200. In this embodiment, there are multiple second rotating posts 410, which are evenly spaced along the circumference of the third bevel gear 400.

[0071] The second rotating column 410 is fixedly connected to a second pawl 420, which is engaged with a second elastic element (not shown in the figure) for pushing it toward the second ratchet 240, thus forming the second ratchet 240 mechanism. The second elastic element may be a spring, but is not limited thereto.

[0072] The ratchet teeth of the first ratchet 230 and the second ratchet 240 are in the same direction. When the first shaft 100 is actuated, only one of the second bevel gear 300 and the third bevel gear 400 can drive the second shaft 200.

[0073] like Figure 3 and Figure 4 As shown, when the first shaft 100 is actuated, the first bevel gear 110 drives the second bevel gear 300 to rotate in the K1 direction, and then the first bevel gear 110 drives the third bevel gear 400 to rotate in the K2 direction. At this time, the first pawl 320 can smoothly drive the first ratchet 230, but the second pawl 420 cannot drive the second ratchet 240. Therefore, in this state, the second shaft 200 rotates in the K2 direction.

[0074] If the first shaft 100 is reversed, the first bevel gear 110 drives the second bevel gear 300 to rotate in the opposite direction to K1. Then, the first bevel gear 110 drives the third bevel gear 400 to rotate in the opposite direction to K2. At this time, the first pawl 320 cannot drive the first ratchet 230, while the second pawl 420 can smoothly drive the second ratchet 240. In this state, the rotation direction of the second shaft 200 does not change.

[0075] Therefore, regardless of whether the first shaft 100 rotates clockwise or counterclockwise, the rotation direction of the second shaft 200 will not change. In this way, the integration of bidirectional and unidirectional rotation is achieved, and the bidirectional and unidirectional rotations of the transmission device are carried out completely synchronously.

[0076] In practical applications, the first shaft 100 is used to drive a driver (which is a bidirectional drive machine) to introduce power. Simultaneously, the first shaft 100 can serve as a bidirectional power output shaft, while the second shaft 200 serves as a unidirectional power output shaft.

[0077] Overall, the transmission device provided in this application integrates both bidirectional and unidirectional drive modes, resulting in a more compact structure. It also achieves close coordination between the two drive modes, reducing the difficulty of coordinated control.

[0078] In this embodiment, the transmission device further includes: a first cover 500 and a second cover 600.

[0079] A first cover 500 is disposed on the side of the second bevel gear 300 away from the third bevel gear 400. The second bevel gear 300 is rotatably fitted into the first cover 500, and the two are rotatably sealed. The first cover 500 and the second bevel gear 300 together form a first chamber 510. A second shaft 200 passes through the first cover 500 and is rotatably fitted into the first cover 500. The second shaft 200 and the first cover 500 are rotatably sealed.

[0080] The second shaft 200 is rotatably fitted with a first rotating sleeve 520, which is located inside the first chamber 510 and is connected to a first fan blade 530. Along the axial direction of the second shaft 200, the first rotating sleeve 520 is fixedly fitted to the second shaft 200.

[0081] The first rotating sleeve 520 is engaged with the second bevel gear 300 in a transmission manner. For example, the second bevel gear 300 and the first rotating sleeve 520 are fixedly connected by the first connecting rod 540, but this is not limited to this.

[0082] The first chamber 510 has a first opening 550 and a second opening 560 communicating with the outside. The first opening 550 is located on the side of the first blade 530 away from the second bevel gear 300, and the second opening 560 is located on the side of the first blade 530 close to the second bevel gear 300.

[0083] Rotational seal between the second shaft 200 and the second bevel gear 300.

[0084] The second cover 600 is disposed on the side of the third bevel gear 400 away from the second bevel gear 300. The third bevel gear 400 is rotatably fitted into the second cover 600, and the two are rotatably sealed. The second cover 600 and the third bevel gear 400 together form a second chamber 610. The second shaft 200 passes through the second cover 600 and is rotatably fitted into the second cover 600. The second shaft 200 and the second cover 600 are rotatably sealed.

[0085] The second shaft 200 is rotatably fitted with a second rotating sleeve 620, which is located inside the second chamber 610 and is connected to a second fan blade 630. The second rotating sleeve 620 is fixedly fitted to the second shaft 200 along the axial direction of the second shaft 200.

[0086] The second rotating sleeve 620 is engaged with the third bevel gear 400 in a transmission manner. For example, the third bevel gear 400 and the second rotating sleeve 620 are fixedly connected by the second connecting rod 640, but this is not the only possibility.

[0087] The second chamber 610 has a third opening 650 and a fourth opening 660 communicating with the outside. The third opening 650 is located on the side of the second blade 630 away from the third bevel gear 400, and the fourth opening 660 is located on the side of the second blade 630 close to the third bevel gear 400.

[0088] Rotational seal between the second shaft 200 and the third bevel gear 400.

[0089] The first cover 500 and the second cover 600 are both fixedly installed on the bracket.

[0090] With this design, when the first shaft 100 is actuated, the second bevel gear 300 can also drive the first fan blade 530, and the third bevel gear 400 can also drive the second fan blade 630, thereby achieving airflow control.

[0091] Specifically, in this embodiment, when the first shaft 100 rotates clockwise (i.e., the second bevel gear 300 rotates along the direction of rotation), Figure 3 Rotate in the K1 direction, and the third bevel gear 400 rotates along... Figure 4 When rotating in the K2 direction): The first fan blade 530 draws in air through the first opening 550 and exhausts air through the second opening 560, meaning the airflow direction of the first fan blade 530 is from the side where the first opening 550 is located to the side where the second opening 560 is located. At this time, the second fan blade 630 draws in air through the fourth opening 660 and exhausts air through the third opening 650, meaning the airflow direction of the second fan blade 630 is from the side where the fourth opening 660 is located to the side where the third opening 650 is located.

[0092] When the first shaft 100 reverses (i.e., the second bevel gear 300 moves along...), Figure 3 Rotating in the opposite direction to K1, the third bevel gear 400 along... Figure 4 When rotating in the opposite direction to K2): The first fan blade 530 draws in air through the second opening 560 and exhausts air through the first opening 550, meaning the airflow direction of the first fan blade 530 is from the side containing the second opening 560 towards the side containing the first opening 550. At this time, the second fan blade 630 draws in air through the third opening 650 and exhausts air through the fourth opening 660, meaning the airflow direction of the second fan blade 630 is from the side containing the third opening 650 towards the side containing the fourth opening 660.

[0093] This design enables bidirectional airflow control during the bidirectional rotation of the first shaft 100, making it suitable for applications requiring simultaneous airflow delivery.

[0094] Furthermore, the first ratchet 230 is located inside the first chamber 510, and the first ratchet 230 is located between the first rotating sleeve 520 and the second bevel gear 300.

[0095] A first axial hole 210 is provided on the end face of the second shaft 200 away from the third bevel gear 400, and the first axial hole 210 extends into the first chamber 510. A second opening 560 is provided on the side wall of the second shaft 200 and extends in a strip shape along the axial direction of the second shaft 200, and the second opening 560 connects the first axial hole 210 and the first chamber 510.

[0096] In this embodiment, there are multiple second openings 560, and the multiple second openings 560 are evenly spaced along the circumference of the second shaft 200.

[0097] The second shaft 200 is also fitted with a first mating sleeve 570, which is rotatably fitted to the second shaft 200. The first mating sleeve 570 is located between the first rotating sleeve 520 and the first ratchet 230, and its inner sidewall is in contact with the outer sidewall of the second shaft 200. A first threaded hole is provided on the side of the first mating sleeve 570 near the first ratchet 230, and the first threaded hole extends axially along the second shaft 200. The first rotating post 310 has an external thread, and the first rotating post 310 is threaded into the first threaded hole.

[0098] The second ratchet 240 is located inside the second chamber 610, and is positioned between the second rotating sleeve 620 and the third bevel gear 400.

[0099] A second axial hole 220 is provided on the end face of the second shaft 200 away from the second bevel gear 300, and the second axial hole 220 extends into the second chamber 610. A fourth opening 660 is provided on the side wall of the second shaft 200 and extends in a strip shape along the axial direction of the second shaft 200, and the fourth opening 660 connects the second axial hole 220 and the second chamber 610.

[0100] In this embodiment, there are multiple fourth openings 660, and the multiple fourth openings 660 are evenly spaced along the circumference of the second shaft 200.

[0101] The second shaft 200 is also fitted with a second mating sleeve 670, which is rotatably fitted to the second mating sleeve 670. The second mating sleeve 670 is located between the second rotating sleeve 620 and the second ratchet 240, and its inner sidewall is in contact with the outer sidewall of the second shaft 200. A second threaded hole is provided on the side of the second mating sleeve 670 near the second ratchet 240, and the second threaded hole extends axially along the second shaft 200. The second rotating post 410 has an external thread, and the second rotating post 410 is threaded into the second threaded hole.

[0102] Specifically, when the first shaft 100 is actuated and the first pawl 320 drives the first ratchet 230 (i.e., the second bevel gear 300 moves along...), Figure 3 When rotating in the K1 direction, the first mating sleeve 570 is located on the side of the second opening 560 near the first ratchet 230, at which time the opening of the second opening 560 reaches its maximum. When the first shaft 100 is actuated and the first pawl 320 does not drive the first ratchet 230 (i.e., the second bevel gear 300 rotates along the K1 direction), the first mating sleeve 570 is located on the side of the second opening 560 near the first ratchet 230. Figure 3 When the first pawl 320 rotates in the opposite direction to K1, the first pawl 320 is continuously pushed up by the ratchet teeth of the first ratchet 230, causing the first rotating column 310 to rotate. The first rotating column 310 drives the first mating sleeve 570 to move toward the side where the second opening 560 is located through the thread, thereby reducing the opening of the second opening 560.

[0103] When the first shaft 100 is actuated and the second pawl 420 drives the second ratchet 240 (i.e., the third bevel gear 400 moves along...), Figure 4 When rotating in the K2 direction, the first mating sleeve 570 is located on the side of the fourth opening 660 near the second ratchet 240, at which time the opening of the fourth opening 660 reaches its maximum. When the first shaft 100 is actuated and the second pawl 420 does not drive the second ratchet 240 (i.e., the third bevel gear 400 rotates along the K2 direction), the first mating sleeve 570 is located on the side of the fourth opening 660 near the second ratchet 240. Figure 4 When the second pawl 420 rotates in the opposite direction to K2, the second pawl 420 is pushed up by the ratchet teeth of the second ratchet 240, causing the second rotating column 410 to rotate. The second rotating column 410 drives the second mating sleeve 670 to move toward the side where the fourth opening 660 is located through the thread, thereby reducing the opening of the fourth opening 660.

[0104] When the first shaft 100 is actuated, only one of the first pawl 320 and the second pawl 420 can successfully transmit the driving force. Therefore, when the first shaft 100 is actuated, at the same time, one of the second opening 560 and the fourth opening 660 has the largest opening (the pawl can successfully drive the corresponding ratchet), while the other has a smaller opening (the pawl cannot drive the corresponding ratchet).

[0105] In other words, when the first blade 530 draws in air through the first opening 550, the second opening 560 is at its maximum opening, and at this time the airflow in the first chamber 510 is relatively large, such as... Figure 1 and Figure 2 As shown. Correspondingly, at this time, the second fan blade 630 exhausts gas through the third opening 650, and the opening of the fourth opening 660 is relatively small. At this time, the air flow rate in the second chamber 610 is also relatively small compared to that in the first chamber 510.

[0106] When the second fan blade 630 exhausts air through the first opening 550, the opening of the second opening 560 decreases, and the airflow in the first chamber 510 decreases. Figure 6 and Figure 7 As shown. Correspondingly, at this time, the second blade 630 draws in air through the third opening 650, and the opening of the fourth opening 660 reaches its maximum. At this time, the airflow in the second chamber 610 is also relatively larger than that in the first chamber 510.

[0107] Correspondingly, the first opening 550 can be connected to a first connecting pipe (not shown in the figure), and a first filter element (not shown in the figure) is provided at the end of the first connecting pipe away from the first cover 500. The third opening 650 can be connected to a second connecting pipe (not shown in the figure), and a second filter element (not shown in the figure) is provided at the end of the second connecting pipe away from the second cover 600. Correspondingly, the first axial hole 210 and the second axial hole 220 of the second shaft 200 are used to communicate with the atmosphere.

[0108] When the transmission device provided in this application is applied to a mixing equipment, if it is a unidirectional mixing device, the first shaft 100 is driven by a bidirectional driver, and the second shaft 200 is driven by the mixing shaft of the mixing equipment. At the same time, both the first connecting pipe and the second connecting pipe can be extended into the mixing chamber of the mixing equipment, and the first connecting pipe and the second connecting pipe are respectively located on opposite sides of the mixing chamber (the openings of the first connecting pipe and the second connecting pipe are higher than the material).

[0109] At this time, when mixing materials (especially dry powder materials), regardless of whether the first shaft 100 rotates clockwise or counterclockwise, the rotation direction of the second shaft 200 remains unchanged, which can meet the needs of unidirectional stirring. At the same time, regardless of whether the first shaft 100 rotates clockwise or counterclockwise, one of the first connecting pipe and the second connecting pipe will draw air from the mixing chamber, and the other will exhaust air into the mixing chamber. However, the air flow rate of the draw-in air is always greater than the air flow rate of the exhaust air. This keeps a negative pressure in the mixing chamber, thereby reducing dust overflow from the mixing chamber and improving dust control.

[0110] Since the first shaft 100 rotates bidirectionally and alternately, the first connecting pipe and the second connecting pipe alternately draw in and exhaust air. At the same time, only one of the first filter element and the second filter element is filtering (preventing materials and dust from entering the first connecting pipe and the second connecting pipe), while the other is being backflushed by the airflow. This can achieve alternating self-cleaning of the first filter element and the second filter element, thereby reducing the burden of manual cleaning and enabling the transmission device to perform dust control function for a longer period of time.

[0111] It should be noted that when the transmission device provided in this application can also be applied to a mixing and blending device that requires bidirectional mixing, the first shaft 100 is driven and coupled with the bidirectional driver and simultaneously driven and coupled with the mixing shaft of the mixing and blending device, while the second shaft 200 can be driven and coupled with the power shaft of other feeding mechanisms. For example, when the mixing and blending device is a continuous mixing device, the second shaft 200 can be driven and coupled with the mixing component conveying device of the mixing and blending device to provide power to the mixing component conveying device, and is not limited thereto.

[0112] In addition, when the transmission device provided in this application can also be applied to crushing equipment, the first shaft 100 is driven by a bidirectional drive, and the second shaft 200 is driven by the power shaft of the crushing equipment. Simultaneously, both the first and second connecting pipes can extend into the crushing chamber of the crushing equipment, and are positioned within the crushing chamber in areas that do not directly collide with the stones. For example, in an impact crusher, the non-contact area between the rotor and the impact plate does not directly participate in crushing, so the first and second connecting pipes can be positioned there; in a cone crusher, the parallel area between the crushing cone and the fixed cone only serves a guiding function, so the first and second connecting pipes can be positioned there; and this is not limited to these applications.

[0113] During operation, a negative pressure is maintained inside the crushing chamber, thereby reducing dust leakage and improving dust control. Simultaneously, the first and second filter elements can be self-cleaned alternately, reducing manual cleaning workload and allowing the transmission device to perform its dust control function for a longer period.

[0114] It should be noted that the above are only application examples. The transmission device provided in this application can also be applied to other power transmission scenarios and is not limited to this. The specific application method of the transmission device provided in this application can be flexibly selected according to actual needs.

[0115] It is understandable that, for different application scenarios, the diameter of the first rotating column 310, the diameter of the second rotating column 410, the thickness of the first pawl 320, and the thickness of the second pawl 420 can be flexibly adjusted according to actual needs to meet different torque transmission requirements.

[0116] Returning to this embodiment, a first groove 330 is provided on the side of the second bevel gear 300 away from the third bevel gear 400, the first ratchet 230 is located in the first groove 330, and the first rotating column 310 is engaged with the bottom wall of the first groove 330.

[0117] The third bevel gear 400 has a second groove 430 on the side away from the second bevel gear 300, the second ratchet 240 is located in the second groove 430, and the second rotating column 410 is engaged with the bottom wall of the second groove 430.

[0118] This design makes the structure more compact and saves space.

[0119] In this embodiment, one end of the first connecting rod 540 is fixedly connected to the side wall of the first rotating sleeve 520, and the other end of the first connecting rod 540 is fixedly connected to the side of the second bevel gear 300 away from the third bevel gear 400, and the first connecting rod 540 is disposed near the edge of the first groove 330.

[0120] One end of the second connecting rod 640 is fixedly connected to the side wall of the second rotating sleeve 620, and the other end of the second connecting rod 640 is fixedly connected to the side of the third bevel gear 400 away from the second bevel gear 300. The second connecting rod 640 is located near the edge of the second groove 430.

[0121] This design avoids mutual interference between the first rotating sleeve 520 and the first mating sleeve 570, as well as mutual interference between the second rotating sleeve 620 and the second mating sleeve 670.

[0122] This application also provides a mixing device, which includes the aforementioned transmission device. The application of the transmission device in the mixing device has already been described above and will not be repeated here.

[0123] This application also provides a low-dust crusher, which includes: a crusher body and the aforementioned transmission device.

[0124] The first shaft 100 of the transmission device is driven by the driver, and the second shaft 200 of the transmission device is driven by the power shaft of the crusher body.

[0125] Both the first and second connecting pipes extend into the crushing chamber of the crusher body and are located on opposite sides of the crushing chamber.

[0126] The application of transmission devices in low-dust crushers has been explained above and will not be repeated here.

[0127] In summary, the transmission device provided in this application integrates both bidirectional and unidirectional drive methods, resulting in a more compact structure. It also achieves close coordination between the two drive methods, reducing the difficulty of coordinated control. The low-dust crusher provided in this application effectively improves dust control during the crushing process, eliminating the need for additional dust removal equipment and maintaining a low-dust effect for extended periods.

[0128] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A transmission device, characterized in that, include: First shaft, first bevel gear, second shaft, second bevel gear, third bevel gear, first ratchet and second ratchet; The first bevel gear is coaxially and fixedly connected to the first shaft. Both the second bevel gear and the third bevel gear are coaxially arranged with the second shaft, and the second shaft passes through both the second bevel gear and the third bevel gear. Both the second bevel gear and the third bevel gear are rotatably engaged with the second shaft. The second bevel gear and the third bevel gear are arranged facing each other and spaced apart. The first shaft is perpendicular to the second shaft, and the first bevel gear is located between the second bevel gear and the third bevel gear. Both the second bevel gear and the third bevel gear mesh with the first bevel gear. The first ratchet and the second ratchet are both coaxially fixedly connected to the second shaft. The first ratchet is located near the second bevel gear, and the second ratchet is located near the third bevel gear. The second bevel gear is provided with a first rotating column on the side near the first ratchet. The rotation axis of the first rotating column is parallel to the second shaft. The first rotating column is fixedly connected to a first pawl. The first pawl is engaged with a first elastic element for pushing it toward the first ratchet to form a first ratchet mechanism. The third bevel gear is provided with a second rotating column on the side near the second ratchet. The rotation axis of the second rotating column is parallel to the second shaft. The second rotating column is fixedly connected to a second pawl. The second pawl is engaged with a second elastic element for pushing it toward the second ratchet to form a second ratchet mechanism. Wherein, the ratchet teeth of the first ratchet and the second ratchet are in the same direction, so that when the first shaft is actuated, only one of the second bevel gear and the third bevel gear can drive the second shaft; The transmission device further includes: a first cover and a second cover; The first cover is disposed on the side of the second bevel gear away from the third bevel gear, and the second bevel gear is rotatably engaged with the first cover. The first cover and the second bevel gear together form a first chamber. The second shaft passes through the first cover and is rotatably engaged with the first cover. The second shaft is rotatably fitted with a first rotating sleeve, which is located inside the first cavity. The first rotating sleeve is connected to a first fan blade. The first rotating sleeve is in transmission engagement with the second bevel gear. The first cavity has a first opening and a second opening that communicate with the outside. The first opening is located on the side of the first fan blade away from the second bevel gear, and the second opening is located on the side of the first fan blade close to the second bevel gear. The second cover is disposed on the side of the third bevel gear away from the second bevel gear, and the third bevel gear is rotatably engaged with the second cover. The second cover and the third bevel gear enclose each other to form a second chamber; the second shaft passes through the second cover and is rotatably engaged with the second cover. The second shaft is rotatably fitted with a second rotating sleeve, which is located inside the second cavity. The second rotating sleeve is connected to a second fan blade. The second rotating sleeve is in transmission engagement with the third bevel gear. The second cavity has a third opening and a fourth opening that communicate with the outside. The third opening is located on the side of the second fan blade away from the third bevel gear, and the fourth opening is located on the side of the second fan blade close to the third bevel gear.

2. The transmission device according to claim 1, characterized in that, The first ratchet is located inside the first chamber, and the first ratchet is located between the first rotating sleeve and the second bevel gear; The second shaft has a first axial hole at one end face away from the third bevel gear, and the first axial hole extends into the first cavity; the second opening is opened on the side wall of the second shaft and extends along the axial direction of the second shaft, and the second opening connects the first axial hole and the first cavity; The second shaft is also fitted with a first mating sleeve, which is rotatably fitted to the first mating sleeve. The first mating sleeve is located between the first rotating sleeve and the first ratchet. The first mating sleeve has a first threaded hole on the side near the first ratchet, which extends along the axial direction of the second shaft. The first rotating post has an external thread, which is threaded into the first threaded hole. When the first shaft is actuated and the first pawl drives the first ratchet, the first mating sleeve is located on the side of the second opening close to the first ratchet; when the first shaft is actuated and the first pawl does not drive the first ratchet, the first pawl is pushed up by the ratchet teeth of the first ratchet, causing the first rotating column to rotate. The first rotating column drives the first mating sleeve to move toward the side where the second opening is located through the thread, thereby reducing the opening of the second opening. The second ratchet is located inside the second chamber, and the second ratchet is located between the second rotating sleeve and the third bevel gear; The second shaft body has a second axial hole at one end face away from the second bevel gear, and the second axial hole extends into the second cavity; the fourth opening is opened on the side wall of the second shaft body and extends along the axial direction of the second shaft body, and the fourth opening connects the second axial hole and the second cavity. The second shaft is also fitted with a second mating sleeve, which is rotatably fitted to the second mating sleeve. The second mating sleeve is located between the second rotating sleeve and the second ratchet. The second mating sleeve has a second threaded hole on the side near the second ratchet, which extends axially along the second shaft. The second rotating post has an external thread, which is threaded into the second threaded hole. When the first shaft is actuated and the second pawl drives the second ratchet, the first mating sleeve is located on the side of the fourth opening close to the second ratchet; when the first shaft is actuated and the second pawl does not drive the second ratchet, the second pawl is pushed up by the ratchet teeth of the second ratchet, causing the second rotating column to rotate. The second rotating column drives the second mating sleeve to move toward the side where the fourth opening is located through the thread, thereby reducing the opening of the fourth opening.

3. The transmission device according to claim 2, characterized in that, The first opening is connected to a first connecting pipe; a first filter element is provided at the end of the first connecting pipe away from the first cover. The third opening is connected to a second connecting pipe; a second filter element is provided at one end of the second connecting pipe away from the second cover.

4. The transmission device according to claim 3, characterized in that, The second bevel gear has a first groove on the side away from the third bevel gear, the first ratchet is located in the first groove, and the first rotating column is engaged with the bottom wall of the first groove. The third bevel gear has a second groove on the side away from the second bevel gear, the second ratchet is located in the second groove, and the second rotating column is engaged with the bottom wall of the second groove.

5. The transmission device according to claim 4, characterized in that, The second bevel gear is fixedly connected to the first rotating sleeve by a first connecting rod. One end of the first connecting rod is fixedly connected to the side wall of the first rotating sleeve, and the other end of the first connecting rod is fixedly connected to the side of the second bevel gear away from the third bevel gear. The first connecting rod is located close to the edge of the first groove. The third bevel gear and the second rotating sleeve are fixedly connected by a second connecting rod. One end of the second connecting rod is fixedly connected to the side wall of the second rotating sleeve, and the other end of the second connecting rod is fixedly connected to the side of the third bevel gear away from the second bevel gear. The second connecting rod is located near the edge of the second groove.

6. The transmission device according to claim 3, characterized in that, There are multiple second openings, and the multiple second openings are evenly spaced along the circumference of the second shaft. There are multiple fourth openings, and the multiple fourth openings are evenly spaced along the circumference of the second axis.

7. The transmission device according to claim 3, characterized in that, There are multiple first rotating columns, and the multiple first rotating columns are evenly spaced along the circumference of the second bevel gear; There are multiple second rotating columns, and the multiple second rotating columns are evenly spaced along the circumference of the third bevel gear.

8. A low-dust crusher, characterized in that, include: The crusher body and the transmission device as described in any one of claims 3-7; The first shaft of the transmission device is driven by the driver, and the second shaft of the transmission device is driven by the power shaft of the crusher body. Both the first connecting pipe and the second connecting pipe extend into the crushing chamber of the crusher body and are respectively located on opposite sides of the crushing chamber of the crusher body.

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