Speed reducer for lifting roller shutter door

Abstract

The utility model discloses a speed reducer for a lifting roller shutter door, and the speed reducer comprises a housing which comprises a connecting housing and a box body; the clutch mechanism is arranged in the connecting housing and comprises a gear shifting mechanism and a clutch, and the gear shifting mechanism is used for controlling the clutch to be clutched; a motor shaft of the motor extends into the connecting housing and is connected with the input end of the clutch, and the motor is used for outputting power; the transmission structure is arranged on the box body and comprises a bevel gear shaft, a second shaft, a third shaft, a fourth shaft and an output shaft, the bevel gear shaft is perpendicular to the second shaft, the second shaft, the third shaft and the fourth shaft are parallel to the output shaft, one end of the bevel gear shaft is connected with the clutch, the other end of the bevel gear shaft is in transmission connection with a bevel gear on the second shaft, and the second shaft is in transmission connection with the third shaft; the third shaft is in transmission connection with the fourth shaft, the fourth shaft is in transmission connection with the output shaft, and the output shaft is in transmission connection with the roller shutter door. The speed reducer for the lifting roller shutter door, provided by the scheme, has the characteristics of on-site space arrangement requirement and large speed ratio, and is compact in structure, safe and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting equipment transmission, in particular to a speed reducer for a lifting rolling shutter door. Background Art

[0002] The main components of a fire-resistant rolling shutter reducer include bevel gears, cylindrical gears, a motor housing, a clutch, and a housing. Most reducers utilize a multi-stage parallel-shaft cylindrical gear or a combination of bevel gears and multi-stage parallel-shaft cylindrical gears. The reducer housing can be a fully enclosed, monolithic design with a top cover. During assembly, the shafts are inserted through holes, and the gears are hoisted into the reducer from the top cover. Alternatively, the reducer housing can be a layered design, with the output shaft stacked layer by layer, like a pyramid, during assembly. However, both reducer housing structures present the following challenges: 1. The gears in the former require interference fit to ensure transmission accuracy, making subsequent disassembly and maintenance inconvenient. 2. While the latter facilitates assembly and disassembly, it results in a complex design and a less compact structure. Furthermore, conventional fire-resistant rolling shutter reducers utilize a monolithic cast shift fork mechanism, which is costly. The integral shift fork cannot be easily installed in the compact motor housing, making adjustment difficult during assembly. Furthermore, the shift handle locking mechanism typically utilizes a pin inserted and a nut locked in place. When an emergency occurs, clutch operation requires tool assistance, which cannot be responded to in a timely and rapid manner, reducing the reliability of the reducer. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a speed reducer for lifting and rolling shutter doors which has a compact structure, is easy to install and maintain, safe and has high reliability.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0005] Reducer for lifting rolling shutter door, including:

[0006] The housing comprises a fixedly connected connection cover and a box body;

[0007] The clutch mechanism is arranged in the connecting housing and includes a shift mechanism and a clutch. The shift mechanism is used to control the clutch engagement;

[0008] The motor is fixedly connected to the connecting housing, the motor shaft of the motor extends into the connecting housing and is connected to the input end of the clutch, and the motor is used to output power;

[0009] The transmission structure is arranged on the box body and includes a bevel gear shaft, a second shaft, a third shaft, a fourth shaft and an output shaft. The bevel gear shaft is perpendicular to the second shaft, and the second shaft, the third shaft, the fourth shaft and the output shaft are parallel. Among them, one end of the bevel gear shaft is connected to the clutch, and the other end of the bevel gear shaft is connected to the bevel gear on the second shaft. The second shaft is connected to the third shaft, the third shaft is connected to the fourth shaft, the fourth shaft is connected to the output shaft, and the output shaft is connected to the rolling door.

[0010] The lifting rolling shutter door provided by this solution transmits power to the transmission structure through the motor. The transmission structure consists of a first-stage bevel gear and a three-stage parallel shaft transmission structure. A manual mechanical clutch mechanism is provided between the motor and the transmission structure, which can directly disconnect the transmission chain between the motor and the transmission structure; the first-stage bevel gear rotates horizontally at a right angle for output. The reducer for the lifting rolling shutter door takes into account the requirements of on-site space arrangement and the characteristics of a large speed ratio. It has a large speed ratio, a compact structure, and is safe and reliable.

[0011] The shift mechanism includes a shift handle, a shift fork shaft, a first rotating arm, a distance ring, a second rotating arm and two retaining springs. One end of the shift fork shaft is rotatably supported on the connecting cover, and the other end of the shift fork shaft is connected to the shift handle after passing through the connecting cover. The first rotating arm, the distance ring and the second rotating arm are sequentially arranged on the shift fork shaft. The two retaining springs are respectively arranged on the left and right sides of the first rotating arm and the second rotating arm to fix the first rotating arm, the distance ring and the second rotating arm on the shift fork shaft. The first rotating arm and the second rotating arm are respectively on both sides of the clutch to drive the clutch to engage and disengage.

[0012] In this way, turning the shift handle drives the shift fork shaft to rotate, thereby rotating the first and second rotating arms to drive the clutch to disengage, disconnecting the motor shaft from the transmission mechanism. In addition, the segmented rotating arm replaces the traditional cast shift fork mechanism, which facilitates production and assembly.

[0013] Preferably, a locking support is provided on the side of the connecting cover close to the shift handle, a first locking opening is provided on the locking support, and a second locking opening is provided on the shift handle; it also includes a locking mechanism, the locking mechanism includes a handle sleeve and a pin shaft, the pin shaft is inserted into the first locking opening and the second locking opening to lock the shift handle and the locking support, and the handle sleeve can drive the pin shaft to leave the first locking opening of the locking support to open the shift handle.

[0014] This allows the shift handle to be opened manually in an emergency without the need for tools.

[0015] Preferably, the locking mechanism also includes a compression spring and a pin sleeve. The handle sleeve is fixedly connected to the pin shaft. The pin sleeve is located below the pin shaft and the rear end of the pin sleeve is fixedly connected to the shift handle. The rear end of the compression spring abuts against the pin shaft, and the front end of the compression spring abuts against the pin sleeve.

[0016] Preferably, the pin sleeve is mounted on the shift handle by means of screws, and the handle sleeve and the pin shaft are riveted together by means of a pin.

[0017] Preferably, the housing further comprises a rocker arm, and a rotary cover is provided on the housing. The rotary cover is located at one end of the two shafts, and the rocker arm can drive the two shafts to rotate. In this way, in the event of an emergency power outage, the locking mechanism and the shift mechanism can be used to manually operate the rolling shutter door.

[0018] Preferably, the rocker arm is mounted on the box body through a U-shaped elastic pipe clamp. A travel switch is also provided on the box body. The travel switch is electrically connected to the motor. When the rocker arm is installed on the box body, one end of the rocker arm presses the contacts of the travel switch; when the rocker arm is removed, the contacts of the travel switch are relaxed, and the travel switch releases a signal to the motor to brake the motor, thereby playing a safety and protection role.

[0019] Preferably, the motor shaft of the motor is connected to the input end of the clutch through an internal spline sleeve with interference fit, thereby realizing a manual mechanical clutch function.

[0020] Preferably, a viewing window is provided on the top and side of the casing, respectively, so that operation can be performed through the viewing window during simple maintenance.

[0021] Preferably, the box body is integrally welded and fixed, and a side box cover is provided on the side of the box body. In this way, the transmission shaft system components can be easily assembled into the box body through the integral welding and side box cover design, and when replacing gears or bearings, the side box cover can be opened for operation.

[0022] Due to the adoption of the above technical solution, the utility model has the following beneficial effects: in this solution, the lifting and rolling shutter door transmits power to the transmission structure through the motor, and the transmission structure is a first-stage bevel gear and a three-stage parallel shaft transmission structure, wherein a manual mechanical clutch mechanism is provided between the motor and the transmission structure, which can directly disconnect the transmission chain between the motor and the transmission structure; the first-stage bevel gear is horizontally rotated to a right angle for output, and the reducer for the lifting and rolling shutter door takes into account the requirements of on-site space arrangement and the characteristics of a large speed ratio, and has a large speed ratio, a compact structure, and is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the utility model;

[0024] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of AA;

[0025] Figure 3 This is a schematic diagram of the structure in which the shift mechanism and the locking mechanism are mounted on the connecting cover;

[0026] Figure 4 It is a structural diagram of the rocker arm being installed on the box body;

[0027] Figure 5 yes Figure 3 Schematic diagram of the specific structure at A in the middle.

[0028] Reference numerals:

[0029] 1. Connecting cover; 2. Internal spline sleeve; 3. Motor shaft; 4. Clutch; 5. Bevel gear shaft; 6. Second shaft; 7. Screw cover; 8. Third shaft; 9. Fourth shaft; 10. Output shaft; 11. Housing; 12. Side housing cover; 13. Shift handle; 14. Locking mechanism; 15. Shift fork shaft; 16. First rotating arm; 17. Distance ring; 18. Second rotating arm; 19. Circlip; 20. Rocker lever; 21. Travel switch; 22. Handle cover; 23. Pin; 24. Pin shaft; 25. Compression spring; 26. Screw; 27. Pin sleeve; 28. Locking support; 29. ​​U-shaped elastic pipe clamp. DETAILED DESCRIPTION

[0030] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means two or more, unless expressly limited otherwise.

[0033] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0034] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0035] like Figures 1 to 5 As shown, the utility model discloses a speed reducer for a lifting rolling door, comprising:

[0036] The housing comprises a connection cover 1 and a box body 11 which are fixedly connected;

[0037] The clutch mechanism is arranged in the connecting housing 1 and includes a shift mechanism and a clutch 4. The shift mechanism is used to control the clutch 4 to engage or disengage.

[0038] The motor is fixedly connected to the connecting housing 1, and the motor shaft 3 of the motor extends into the connecting housing 1 and is connected to the input end of the clutch 4. The motor is used to output power; specifically, the motor shaft 3 of the motor is connected to the input end of the clutch 4 through an internal spline sleeve 2 of interference fit;

[0039] The transmission structure is arranged on the box body 11, and includes a bevel gear shaft 5, a second shaft 6, a third shaft 8, a fourth shaft 9 and an output shaft 10. The bevel gear shaft 5 is perpendicular to the second shaft 6, and the second shaft 6, the third shaft 8, the fourth shaft 9 and the output shaft 10 are parallel. Among them, one end of the bevel gear shaft 5 is connected to the clutch 4, and the other end of the bevel gear shaft 5 is connected to the bevel gear on the second shaft 6, the second shaft 6 is connected to the third shaft 8, the third shaft 8 is connected to the fourth shaft 9, the fourth shaft 9 is connected to the output shaft 10, and the output shaft 10 is connected to the rolling door.

[0040] In this way, the lifting and rolling shutter door transmits power to the transmission structure through the motor. The transmission structure is a one-stage bevel gear and a three-stage parallel shaft transmission structure. A manual mechanical clutch mechanism is provided between the motor and the transmission structure, which can directly disconnect the transmission chain between the motor and the transmission structure; the one-stage bevel gear rotates horizontally at a right angle for output. The reducer for the lifting and rolling shutter door takes into account the requirements of on-site space layout and the characteristics of large speed ratio. It has a large speed ratio, compact structure, and is safe and reliable.

[0041] In this solution, the housing 11 is welded integrally, with side covers 12 provided on the sides. This allows for easy assembly of transmission shaft components into the housing 11, which can then be closed. This facilitates subsequent installation and maintenance. Compared to fully enclosed welded housings, this housing 11 is easier to disassemble and maintain, and simpler than a layered housing structure with an upper, middle, and lower structure. A viewing window is provided on the top and side of the housing 11, allowing for easy maintenance. For gear or bearing replacement, the side covers 12 can be opened.

[0042] like Figure 3 As shown, the shift mechanism includes a shift handle 13, a shift fork shaft 15, a first rotating arm 16, a distance ring 17, a second rotating arm 18 and two retaining springs 19. One end of the shift fork shaft 15 is rotatably supported on the connecting cover 1, and the other end of the shift fork shaft 15 is connected to the shift handle 13 after passing through the connecting cover 1. The first rotating arm 16, the distance ring 17 and the second rotating arm 18 are sequentially arranged on the shift fork shaft 15. The two retaining springs 19 are respectively arranged on the left and right sides of the first rotating arm 16 and the second rotating arm 18 so as to fix the first rotating arm 16, the distance ring 17 and the second rotating arm 18 on the shift fork shaft 15. The first rotating arm 16 and the second rotating arm 18 are respectively on both sides of the clutch 4 so as to drive the clutch to engage or disengage.

[0043] The shift handle 13 is turned to rotate the shift fork shaft 15, thereby rotating the first rotating arm 16 and the second rotating arm 18 to drive the clutch 4 to engage and disengage the motor shaft 3 and the transmission mechanism. The shift handle 13 is turned back to connect the motor shaft 3 to the rotating mechanism, thereby realizing electric control of the rolling door.

[0044] During assembly, the first rotating arm 16 is first placed into the connecting housing 1, the shift fork shaft 15 is inserted from the side, and the spacer ring 17 and rotating arm 18 are then inserted. Finally, the retaining spring 19 secures the first and second rotating arms 16 and 18 to complete the assembly. This segmented rotating arm structure results in a small component size and a simple structure. Single components can be welded in small batches and easily placed into the compact space of the connecting housing 1, making the component processing and assembly process simple and fast.

[0045] like Figure 3 and Figure 5As shown, a locking support 28 is provided on the side of the connecting housing 1 near the shift handle 13. The locking support 28 has a first locking opening, and the shift handle 13 has a second locking opening. The connecting housing 1 also includes a locking mechanism 14, which includes a handle sleeve 22 and a pin 24. The pin 24 is inserted into the first locking opening and the second locking opening to lock the shift handle 13 with the locking support 28. The handle sleeve 22 can drive the pin 24 to leave the first locking opening of the locking support 28, thereby unlocking the shift handle 13. In this way, in an emergency, the shift handle can be manually unlocked without the use of tools.

[0046] Specifically, the locking mechanism 14 also includes a compression spring 25 and a pin sleeve 27. The handle sleeve 22 and the pin shaft 24 are riveted by a pin 23. The pin sleeve 27 is located below the pin shaft 24 and the rear end of the pin sleeve 27 is fixedly connected to the shift handle 13 by a screw 26. The rear end of the compression spring 25 abuts against the pin shaft 24, and the front end of the compression spring 25 abuts against the pin sleeve 27.

[0047] When the shift handle 13 is to be operated, the handle sleeve 22 is pulled up to engage the pin 24, causing the pin 24 to move away from the locking support 28. The shift handle 13 can then be rotated to engage or disengage the clutch. When the shift operation is completed, the handle sleeve 22 is pulled up again. When the first locking notch and the second locking notch are aligned, the compression spring 25 is released, causing the positioning pin 24 to return to the first locking notch of the locking support 28, locking the shift handle 13.

[0048] In order to realize manual lifting and lowering of rolling shutter door when the reducer loses power, Figure 1 、 Figure 2 and Figure 4 As shown, it also includes a rocker arm 20 , and a rotary cover 7 is provided on the box body 11 . The rotary cover 7 is located at one end of the two shafts 6 , and the rocker arm 20 can drive the two shafts 6 to rotate.

[0049] When the reducer loses power, the clutch handle 14 is manually pulled up, the shift handle 13 is toggled, the first rotating arm 16 and the second rotating arm 18 drive the clutch 4 to engage and disengage the transmission structure and the motor shaft 3, and then the rotary cover 7 at one end of the second shaft 6 is opened, and the second shaft 6 is driven to rotate through the rocker arm 20 to realize manual driving of the transmission structure, so that the rolling shutter door can be manually raised and lowered.

[0050] like Figure 4 As shown, the rocker arm 20 is installed on the box body 11 through a U-shaped elastic pipe clamp 29. The box body 11 is also provided with a limit switch 21, which is electrically connected to the motor. When the rocker arm 20 is installed on the box body 11, one end of the rocker arm 20 presses the contact of the limit switch 21; when the rocker arm 20 is removed, the contact of the limit switch 21 is relaxed, and the limit switch 21 releases a signal to the motor to brake the motor.

[0051] Like this, realize controlling motor transmission by compressing or loosening the contact of travel switch 21, play the effect of safety, protection. In this scheme, each manual operation place of speed reducer is all attached with " rising ", " falling " and " clutch ", " closing " indicator plate.

[0052] All features described in the description, the appended claims and the drawings are important features of the present invention, whether alone or in any combination.

[0053] The technical solutions described in this utility model also include technical solutions formed by any one or more of the specific features, structures, materials or characteristics described above, either alone or in combination.

[0054] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limiting the present invention. Ordinary technicians in this field can change, modify, replace, modify, delete some features, add features or re-combine features to form a technical solution in the above embodiments without departing from the principles and purpose of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the innovative principles of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. Reducer for lifting rolling shutter door, characterized in that: include: The housing comprises a connection cover (1) and a box body (11) which are fixedly connected; A clutch mechanism is arranged in the connecting housing (1), comprising a shift mechanism and a clutch (4), wherein the shift mechanism is used to control the clutch (4) to engage or disengage; A motor is fixedly connected to the connecting housing (1), a motor shaft (3) of the motor extends into the connecting housing (1) and is connected to the input end of the clutch (4), and the motor is used to output power; The transmission structure is arranged on a housing (11) and comprises a bevel gear shaft (5), a second shaft (6), a third shaft (8), a fourth shaft (9) and an output shaft (10). The bevel gear shaft (5) is perpendicular to the second shaft (6), and the second shaft (6), the third shaft (8), the fourth shaft (9) and the output shaft (10) are parallel. One end of the bevel gear shaft (5) is connected to the clutch (4), and the other end of the bevel gear shaft (5) is transmission-connected to the bevel gear on the second shaft (6). The second shaft (6) is transmission-connected to the third shaft (8), the third shaft (8) is transmission-connected to the fourth shaft (9), the fourth shaft (9) is transmission-connected to the output shaft (10), and the output shaft (10) is transmission-connected to the rolling door.

2. The speed reducer for a lifting roller shutter door according to claim 1, characterized in that: The shift mechanism comprises a shift handle (13), a shift fork shaft (15), a first rotating arm (16), a distance ring (17), a second rotating arm (18) and two retaining springs (19). One end of the shift fork shaft (15) is rotatably supported on a connecting housing (1). The other end of the shift fork shaft (15) passes through the connecting housing (1) and is connected to the shift handle (13). The first rotating arm (16), the distance ring (17) and the second rotating arm (18) are sequentially arranged on the shift fork shaft (15). The two retaining springs (19) are respectively arranged on the left and right sides of the first rotating arm (16) and the second rotating arm (18) so as to fix the first rotating arm (16), the distance ring (17) and the second rotating arm (18) on the shift fork shaft (15). The first rotating arm (16) and the second rotating arm (18) are respectively located on both sides of the clutch (4) so ​​as to drive the clutch to engage or disengage.

3. The speed reducer for a lifting roller shutter door according to claim 2, characterized in that: A locking support (28) is provided on one side of the connecting cover (1) close to the shift handle (13), a first locking opening is provided on the locking support (28), and a second locking opening is provided on the shift handle (13); the connecting cover (1) also includes a locking mechanism (14), the locking mechanism (14) includes a handle cover (22) and a pin (24), the pin (24) is inserted into the first locking opening and the second locking opening to lock the shift handle (13) and the locking support (28), and the handle cover (22) can drive the pin (24) to leave the first locking opening of the locking support (28) to open the shift handle (13).

4. The speed reducer for a lifting roller shutter door according to claim 3, characterized in that: The locking mechanism (14) further comprises a compression spring (25) and a pin sleeve (27). The handle sleeve (22) is fixedly connected to the pin shaft (24). The pin sleeve (27) is located below the pin shaft (24) and the rear end of the pin sleeve (27) is fixedly connected to the shift handle (13). The rear end of the compression spring (25) abuts against the pin shaft (24), and the front end of the compression spring (25) abuts against the pin sleeve (27).

5. The speed reducer for a lifting roller shutter door according to claim 4, characterized in that: The pin sleeve (27) is installed on the shift handle (13) through a screw (26), and the handle sleeve (22) and the pin shaft (24) are riveted through a column pin (23).

6. The speed reducer for a lifting roller shutter door according to claim 2, characterized in that: The box body (11) further comprises a rocker arm (20). A rotary cover (7) is provided on the box body (11). The rotary cover (7) is located at one end of the two shafts (6). The rocker arm (20) can drive the two shafts (6) to rotate.

7. The speed reducer for a lifting roller shutter door according to claim 6, characterized in that: The rocker arm (20) is mounted on the box body (11) through a U-shaped elastic pipe clamp (29). The box body (11) is also provided with a travel switch (21). The travel switch (21) is electrically connected to the motor. When the rocker arm (20) is mounted on the box body (11), one end of the rocker arm (20) presses the contact of the travel switch (21); when the rocker arm (20) is removed, the contact of the travel switch (21) is relaxed, and the travel switch (21) releases a signal to the motor to brake the motor.

8. The speed reducer for a lifting roller shutter door according to claim 1, characterized in that: The motor shaft (3) of the motor is connected to the input end of the clutch (4) through an internal spline sleeve (2) with interference connection.

9. The speed reducer for a lifting roller shutter door according to claim 1, characterized in that: A window hole is respectively provided on the top surface and the side surface of the box body (11).

10. The speed reducer for a lifting roller shutter door according to claim 1, characterized in that: The box body (11) is integrally welded and fixed, and a side box cover (12) is provided on the side of the box body (11).

Images