A power device for building climbing frame
By designing a power device with a two-stage planetary gear reduction structure, the problem of insufficient stability and safety of the building climbing frame power device during the lifting process is solved, and efficient, energy-saving and safe effects are achieved, and the use cycle is extended to facilitate maintenance. .
Patent Information
- Application Number
- CN201910865160.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-09-12
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2039-09-12
AI Technical Summary
The power units of the building climbing frame have high stability and safety requirements during the lifting process, but the self-locking and stability performance of existing electric hoists are insufficient, making it difficult to meet the needs of special applications.
A power device including a gearbox and a sprocket box is designed, adopting a two-stage planetary gear reduction structure, consisting of a series of input shaft and transmission shaft, using components such as the first and second sun gears, planetary gears and fixed gear rings. , realize high gear ratio and self-locking functions to ensure that the motor can prevent reversal when it stops working.
It realizes the stability and safety of the building climbing frame power plant, has high efficiency, energy saving and safety effects, and extends the service cycle and is easy to maintain.
Smart Images
Figure CN110792252B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of construction equipment, and in particular relates to a power device for a construction climbing frame. Background Art
[0002] The power source of building climbing frame is generally an electric hoist, which pulls the O-shaped chain, one end of which is fixed on the building, and the electric hoist is connected to the climbing frame. Due to the particularity of the lifting application of building climbing frame, the lifting process has high requirements for stability and safety. The self-locking performance of the electric hoist and the stability of the equipment are very important performance indicators. Summary of the invention
[0003] The purpose of the present invention is to provide a power device with good self-locking performance and high stability.
[0004] The object of the present invention is achieved in that:
[0005] A power device for a building climbing frame, including a reduction box and a sprocket box, the sprocket box including a sprocket shaft and a sprocket fixed on the sprocket shaft, characterized in that: the reduction box includes an input shaft and a transmission shaft coaxially arranged in a planetary cover, the left end of the input shaft extends out of the planetary cover and is connected to a drive motor, a first sun gear and two first planet carriers are sleeved on the input shaft, the first sun gear is fixedly connected to the input shaft, the two first planet carriers are respectively arranged on both sides of the first sun gear and are rotatably connected to the input shaft, at least three first planetary gears meshing with the first sun gear are arranged in an annular array with the input shaft as the center between the two first planet carriers, the outer side of the first planetary gear is sleeved with a first fixed gear ring and a first movable gear ring that are meshed with all the first planetary gears, A fixed gear ring is fixedly connected to the planetary cover, a first connecting portion formed at the right end of the first movable gear ring is circumferentially fixed to the left end of the transmission shaft, a second sun gear and two second planetary carriers are provided on the transmission shaft, the second sun gear is fixedly connected to the transmission shaft, the two second planetary carriers are respectively arranged on both sides of the second sun gear and are rotatably connected to the transmission shaft, at least three second planetary gears meshing with the second sun gear are arranged in an annular array with the input shaft as the center between the two second planetary carriers, the outer side of the second planetary gears is sleeved with a second fixed gear ring and a second movable gear ring that are meshed with all the second planetary gears, the second fixed gear ring is fixedly connected to the planetary cover, a second connecting portion formed at the right end of the second movable gear ring is circumferentially fixed to the left end of the sprocket shaft, and the sprocket arranged on the sprocket shaft can be connected to a chain.
[0006] In the above-mentioned power device of a building climbing frame, the first fixed gear ring and the second fixed gear ring are both fixedly connected to the planetary cover by screws arranged at circumferential intervals.
[0007] In the above-mentioned power device of a building climbing frame, the planetary cover is tightened in a step-like manner from right to left, and includes a second planetary chamber, a first planetary chamber and a connecting chamber from right to left. The planetary cover and the input shaft are rotatably connected through a first bearing arranged in the connecting chamber. A first sealing ring is provided at the left end of the first bearing. A bearing pressure cover is fixed to the left end of the planetary cover to prevent the first sealing ring and the first bearing from slipping out, and there is a gap between the inner end of the bearing pressure cover and the outer wall of the input shaft.
[0008] In the above-mentioned power device of the building climbing frame, the first planet carrier is rotatably connected to the input shaft via the second bearing; the second planet carrier is rotatably connected to the input shaft via the fourth bearing.
[0009] In the above-mentioned power device of a building climbing frame, the first connecting part and the second connecting part are both "L"-shaped, the outer end of the first connecting part is fixedly connected to the right end of the first moving gear ring, the left end of the inner end of the first connecting part is rotatably connected to the right end of the input shaft through the third bearing, and the right end of the inner end of the first connecting part is fixedly connected to the left end of the transmission shaft; the outer end of the second connecting part is fixedly connected to the right end of the second moving gear ring, the left end of the inner end of the second connecting part is rotatably connected to the right end of the transmission shaft through the fifth bearing, and the right end of the inner end of the second connecting part is fixedly connected to the left end of the sprocket shaft.
[0010] In the above-mentioned power device of a building climbing frame, the diameter of the sprocket shaft is greater than the diameter of the transmission shaft, and an annular second sealing ring is provided between the right end surface of the fifth bearing and the left end surface of the sprocket shaft. The above-mentioned second sealing ring can seal the inner end surface of the second connecting part with the outer end surface of the transmission shaft to prevent external water or dust from entering the interior of the planetary cover.
[0011] In the above-mentioned power device of a building climbing frame, it includes a sprocket cover, the second connecting part is rotatably connected to the left end of the sprocket cover through a sixth bearing, the right end of the sprocket shaft is rotatably connected to the right end of the sprocket cover through a seventh bearing, the left end of the sprocket cover and the right end of the planetary cover are both bent outward to form connecting flanges, and the connecting flange of the sprocket cover and the connecting flange of the planetary cover are fixedly connected by screws arranged at intervals along the circumference.
[0012] In the above-mentioned power device of a building climbing frame, the right end of the sprocket shaft is provided with a pressing plate fixedly connected to the sprocket shaft, the diameter of the pressing plate is larger than the inner diameter of the seventh bearing and can prevent the seventh bearing from falling out from the right end of the sprocket shaft.
[0013] In the above-mentioned power device of the building climbing frame, a pressure cover is provided on the right end surface of the sprocket cover, and a circular accommodating groove with a diameter greater than or equal to the outer diameter of the seventh bearing is provided on the inner end surface of the pressure cover.
[0014] When the power device is working, the motor drives the input shaft to rotate, and the first sun gear fixedly connected to the input shaft drives the first planetary gear to rotate and drives the first moving ring gear to rotate. At this time, the rotation speed of the first moving ring gear is less than the rotation speed of the first sun gear. The first moving ring gear drives the transmission shaft to rotate through the first connecting part, and the second sun gear fixedly connected to the transmission shaft drives the second planetary gear to rotate and drives the second moving ring gear to rotate. At this time, the rotation speed of the second moving ring gear is less than the rotation speed of the second sun gear. The second moving ring gear drives the sprocket shaft to rotate, thereby rotating the sprocket fixed to the sprocket shaft. Since one end of the chain is fixed on the building, the power device of the building climbing frame is fixed on the building climbing frame, and the rotation of the sprocket enables the building climbing frame to complete the lifting function; when the motor stops working, since the transmission ratio of the power device is much greater than the self-locking critical value and has a self-locking property, no matter how large the torque acting on the sprocket is, the input shaft cannot be reversed.
[0015] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:
[0016] The present invention utilizes a reduction box composed of two-stage planetary gear reduction structures connected in series, which has a compact structure, high transmission efficiency, smooth and reliable transmission, and a self-locking function, thereby achieving the purpose of stability and safety of the power device of the building climbing frame, and realizing the effects of high efficiency, energy saving and safety; at the same time, the power device of the building climbing frame has a reasonable structure, a long service life, and is easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.
[0018] Figure 2 yes Figure 1 Cross-sectional view of EE.
[0019] Figure 3 yes Figure 1 Cross-sectional view of BB.
[0020] Figure 4 yes Figure 1 Cross-sectional view of DD.
[0021] Figure 5 It is a schematic diagram of the connection structure of the planetary gear and the sun gear of the present invention.
[0022] Figure 6 It is a cross-sectional view of the planetary cover of the present invention.
[0023] In the figure, 11, input shaft; 12, first sun gear; 13, first planet carrier; 131, second bearing; 14, first planet gear; 15, first fixed gear ring; 16, first movable gear ring; 161, first connecting portion; 162, third bearing; 21, transmission shaft; 22, second sun gear; 23, second planet carrier; 231, fourth bearing; 24, second planet gear; 25, second fixed gear ring; 26, second movable gear ring; 261, second connecting portion; 262, fifth bearing; 263, second sealing ring; 30, sprocket cover; 31, sprocket shaft; 32, sprocket; 33, sixth bearing; 34, seventh bearing; 35, pressing sheet; 36, pressing cover; 361, accommodating groove; 4, planet cover; 41, second planet cavity; 42, first planet cavity; 43, connecting cavity; 44, bearing pressing cover; 45, first sealing ring; 46. First bearing; 5. Connecting flange. DETAILED DESCRIPTION
[0024] The present invention will be further described below with reference to specific embodiments of the present invention. Figure 1 —6:
[0025] The power device of the building climbing frame includes a reduction box and a sprocket box. The sprocket box includes a sprocket shaft 31 and a sprocket 32 fixed on the sprocket shaft 31. The reduction box includes an input shaft 11 and a transmission shaft 21 coaxially arranged in a planetary cover 4. The left end of the input shaft 11 extends out of the planetary cover 4 and is connected to the drive motor. A first sun gear 12 and two first planet carriers 13 are sleeved on the input shaft 11. The first sun gear 12 is fixedly connected to the input shaft 11. The two first planet carriers 13 are respectively arranged on both sides of the first sun gear 12 and are rotatably connected to the input shaft 11. At least three first planetary gears 14 meshing with the first sun gear 12 are arranged in an annular array with the input shaft 11 as the center between the two first planetary carriers 13, and a first fixed gear ring 15 and a first movable gear ring 16 meshing with all the first planetary gears 14 are sleeved on the outer side of the first planetary gear 14, the first fixed gear ring 15 is fixedly connected to the planet cover 4, and a first connecting portion 161 formed on the right end of the first movable gear ring 16 is circumferentially fixed to the left end of the transmission shaft 21, and a second sun gear 22 and two second planetary carriers 23 are provided on the transmission shaft 21, the second sun gear 22 is fixedly connected to the transmission shaft 21, and the two second planetary carriers 23 are respectively arranged on both sides of the second sun gear 22 and are rotatably connected to the transmission shaft 21, and at least three second planetary gears 24 meshing with the second sun gear 22 are arranged in an annular array with the input shaft 11 as the center between the two second planetary carriers 23, and the second planetary gears 24 The outer side of the second fixed gear ring 25 and the second movable gear ring 26 meshing with all the second planetary gears 24 are sleeved, the second fixed gear ring 25 is fixedly connected to the planet cover 4, the second connecting portion 261 formed at the right end of the second movable gear ring 26 is circumferentially fixed to the left end of the sprocket shaft 31, and the sprocket 32 provided on the sprocket shaft 31 can be connected to the chain. The present invention utilizes a two-stage planetary gear reduction structure in series to form a reduction box with a compact structure, high transmission efficiency, stable and reliable transmission, and a self-locking function, thereby achieving the purpose of stability and safety of the power device of the building climbing frame, and realizing the effects of high efficiency, energy saving, and safety; at the same time, the power device of the building climbing frame has a reasonable structure, a long service life, and is easy to maintain.
[0026] like Figure 2 and Figure 6As shown, the first fixed gear ring 15 and the second fixed gear ring 25 are both fixedly connected to the planetary cover 4 by screws arranged at circumferential intervals; the planetary cover 4 is tightened in a stepped manner from right to left, and includes a second planetary cavity 41, a first planetary cavity 42 and a connecting cavity 43 from right to left, the planetary cover 4 and the input shaft 11 are rotatably connected through a first bearing 46 arranged in the connecting cavity 43, a first sealing ring 45 is provided at the left end of the first bearing 46, a bearing pressure cover 44 is fixed at the left end of the planetary cover 4 to prevent the first sealing ring 45 and the first bearing 46 from slipping out, and a gap is provided between the inner end of the bearing pressure cover 44 and the outer side wall of the input shaft 11; the first planetary carrier 13 is rotatably connected to the input shaft 11 through the second bearing 131; the second planetary carrier 23 is rotatably connected to the input shaft 11 through the fourth bearing 231.
[0027] like Figure 2 As shown, the first connection part 161 and the second connection part 261 are both in an "L" shape, the outer end of the first connection part 161 is fixedly connected to the right end of the first movable gear ring 16, the left end of the inner end of the first connection part 161 is rotatably connected to the right end of the input shaft 11 through the third bearing 162, and the right end of the inner end of the first connection part 161 is fixedly connected to the left end of the transmission shaft 21; the outer end of the second connection part 261 is fixedly connected to the right end of the second movable gear ring 26, the left end of the inner end of the second connection part 261 is rotatably connected to the right end of the transmission shaft 21 through the fifth bearing 262, and the right end of the inner end of the second connection part 261 is fixedly connected to the left end of the sprocket shaft 31; the diameter of the sprocket shaft 31 is larger than the diameter of the transmission shaft 21, and an annular second sealing ring 263 is provided between the right end surface of the fifth bearing 262 and the left end surface of the sprocket shaft 31. The second sealing ring 263 can seal the inner end surface of the second connecting portion 261 and the outer end surface of the transmission shaft 21 to prevent external water or dust from entering the interior of the planetary cover 4 .
[0028] Furthermore, the sprocket box includes a sprocket cover 30, the second connecting portion 261 is rotatably connected to the left end of the sprocket cover 30 through the sixth bearing 33, the right end portion of the sprocket shaft 31 is rotatably connected to the right end of the sprocket cover 30 through the seventh bearing 34, the left end portion of the sprocket cover 30 and the right end portion of the planetary cover 4 are both bent outward to form a connecting flange 5, the connecting flange 5 of the sprocket cover 30 and the connecting flange 5 of the planetary cover 4 are fixedly connected by screws arranged at intervals along the circumferential direction; the right end of the sprocket shaft 31 is provided with a pressing plate 35 fixedly connected to the sprocket shaft 31, the diameter of the pressing plate 35 is larger than the inner diameter of the seventh bearing 34 and can prevent the seventh bearing 34 from falling off from the right end of the sprocket shaft 31; a pressing cover 36 is provided on the right end face of the sprocket cover 30, and a circular accommodating groove 361 with a diameter greater than or equal to the outer diameter of the seventh bearing 34 is provided on the inner end face of the pressing cover 36.
[0029] When the power device is working, the motor drives the input shaft 11 to rotate, and the first sun gear 12 fixedly connected to the input shaft 11 drives the first planetary gear 14 to rotate and drives the first movable ring gear 16 to rotate. At this time, the rotation speed of the first movable ring gear 16 is less than the rotation speed of the first sun gear 12. The first movable ring gear 16 drives the transmission shaft 21 to rotate through the first connecting portion 161, and the second sun gear 22 fixedly connected to the transmission shaft 21 drives the second planetary gear 24 to rotate and drives the second movable ring gear 26 to rotate. At this time, the rotation speed of the second movable ring gear 26 is less than the rotation speed of the second sun gear 22. The second movable ring gear 26 drives the sprocket shaft 31 to rotate so that the sprocket 32 fixed to the sprocket shaft 31 rotates. Since one end of the chain is fixed on the building, the power device of the building climbing frame is fixed on the building climbing frame, and the rotation of the sprocket 32 enables the building climbing frame to complete the lifting function; when the motor stops working, since the transmission ratio of the power device is much greater than the self-locking critical value and has a self-locking property, no matter how large the torque acting on the sprocket 32 is, the input shaft 11 cannot be reversed.
[0030] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.
Claims
1. A power device for a building climbing frame, comprising a reduction box and a sprocket box, wherein the sprocket box comprises a sprocket shaft (31) and a sprocket (32) fixed on the sprocket shaft (31), characterized in that: The reduction gearbox comprises an input shaft (11) and a transmission shaft (21) coaxially arranged in the planetary cover (4); the left end of the input shaft (11) extends out of the planetary cover (4) and is connected to the drive motor; a first sun gear (12) and two first planet carriers (13) are sleeved on the input shaft (11); the first sun gear (12) is fixedly connected to the input shaft (11); the two first planet carriers (13) are respectively arranged on both sides of the first sun gear (12) and are rotatably connected to the input shaft (11); at least three first planet gears meshing with the first sun gear (12) are arranged in an annular array between the two first planet carriers (13) with the input shaft (11) as the center. The first planetary gear (14) is provided with a first fixed gear ring (15) and a first movable gear ring (16) meshed with all the first planetary gears (14) on the outer side thereof, the first fixed gear ring (15) is fixedly connected to the planet cover (4), a first connecting portion (161) formed at the right end of the first movable gear ring (16) is circumferentially fixed to the left end of the transmission shaft (21), a second sun gear (22) and two second planet carriers (23) are provided on the transmission shaft (21), the second sun gear (22) is fixedly connected to the transmission shaft (21), the two second planet carriers (23) are respectively arranged on both sides of the second sun gear (22) and are rotatably connected to the transmission shaft (21), and the At least three second planetary gears (24) meshing with the second sun gear (22) are arranged in an annular array between the two second planetary carriers (23) with the input shaft (11) as the center. The outer sides of the second planetary gears (24) are sleeved with a second fixed gear ring (25) and a second movable gear ring (26) meshing with all the second planetary gears (24). The second fixed gear ring (25) is fixedly connected to the planetary cover (4). A second connecting portion (261) formed at the right end of the second movable gear ring (26) is circumferentially fixed to the left end of the sprocket shaft (31). The sprocket (32) arranged on the sprocket shaft (31) can be connected to a chain. The planetary cover (4) is tightened in a stepped manner from right to left. From right to left, it includes a second planetary cavity (41), a first planetary cavity (42) and a connecting cavity (43); the planetary cover (4) and the input shaft (11) are rotatably connected via a first bearing (46) disposed in the connecting cavity (43); a first sealing ring (45) is disposed at the left end of the first bearing (46); a bearing pressure cover (44) is fixed at the left end of the planetary cover (4) to prevent the first sealing ring (45) and the first bearing (46) from sliding out; a gap exists between the inner end of the bearing pressure cover (44) and the outer wall of the input shaft (11); the first fixed gear ring (15) and the second fixed gear ring (25) are both fixedly connected to the planetary cover (4) via screws disposed at circumferential intervals.
2. A power device for a building climbing frame according to claim 1, characterized in that: The first planet carrier (13) is rotatably connected to the input shaft (11) via a second bearing (131); and the second planet carrier (23) is rotatably connected to the input shaft (11) via a fourth bearing (231).
3. A power device for a building climbing frame according to any one of claims 1-2, characterized in that: The first connecting portion (161) and the second connecting portion (261) are both in an "L" shape; the outer end of the first connecting portion (161) is fixedly connected to the right end of the first movable gear ring (16); the left end of the inner end of the first connecting portion (161) is rotatably connected to the right end of the input shaft (11) via a third bearing (162); the right end of the inner end of the first connecting portion (161) is fixedly connected to the left end of the transmission shaft (21); the outer end of the second connecting portion (261) is fixedly connected to the right end of the second movable gear ring (26); the left end of the inner end of the second connecting portion (261) is rotatably connected to the right end of the transmission shaft (21) via a fifth bearing (262); the right end of the inner end of the second connecting portion (261) is fixedly connected to the left end of the sprocket shaft (31).
4. A power device for a building climbing frame according to claim 3, characterized in that: The diameter of the sprocket shaft (31) is greater than the diameter of the transmission shaft (21), and an annular second sealing ring (263) is provided between the right end surface of the fifth bearing (262) and the left end surface of the sprocket shaft (31).
5. A power device for a building climbing frame according to any one of claims 1-2, characterized in that: The sprocket box includes a sprocket cover (30), the second connecting portion (261) is rotatably connected to the left end of the sprocket cover (30) via a sixth bearing (33), the right end of the sprocket shaft (31) is rotatably connected to the right end of the sprocket cover (30) via a seventh bearing (34), the left end of the sprocket cover (30) and the right end of the planet cover (4) are both bent outward to form a connecting flange (5), and the connecting flange (5) of the sprocket cover (30) and the connecting flange (5) of the planet cover (4) are fixedly connected by screws arranged at intervals along the circumferential direction.
6. A power device for a building climbing frame according to claim 5, characterized in that: The right end of the sprocket shaft (31) is provided with a pressing plate (35) fixedly connected to the sprocket shaft (31); the diameter of the pressing plate (35) is larger than the inner diameter of the seventh bearing (34) and can prevent the seventh bearing (34) from falling off the right end of the sprocket shaft (31).
7. A power device for a building climbing frame according to claim 5, characterized in that: A pressure cover (36) is provided on the right end surface of the sprocket cover (30), and a circular accommodation groove (361) having a diameter greater than or equal to the outer diameter of the seventh bearing (34) is provided on the inner end surface of the pressure cover (36).