Speed reducer for escalator driving device

Abstract

The utility model relates to the technical field of reduction gears, in particular to a reduction gear for an escalator driving device, which comprises an escalator reduction gearbox, a side seat fixedly mounted on the outer side of the escalator reduction gearbox, an output shaft and an escalator input shaft rotatably mounted on the left side and the right side of the escalator reduction gearbox respectively, and a first gear fixedly mounted on the inner side of the escalator input shaft. A stabilizing shaft is fixedly installed on the left side of the first gear, a lower rotating shaft is arranged on the lower side of the stabilizing shaft, the right end of the lower rotating shaft is rotatably installed on the inner wall of the escalator reduction gearbox, and a second gear is fixedly installed on the right side of the lower rotating shaft and meshed with the first gear. And the middle part of the lower rotating shaft is rotationally sleeved with a second reinforcing protective cylinder. According to the utility model, the rotary connection point positions are reinforced, and the action relationship among the transmission shafts is established, so that the transmission shafts are more stable during rotation, and the transmission meshing gears fixedly mounted on the transmission shafts are more stable during meshing transmission, so that the noise is reduced, and the energy loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of speed reducers, in particular to a speed reducer for an escalator driving device. Background Art

[0002] An escalator, also known as an automatic escalator or moving stairs, is a device used for vertical transportation in buildings. It consists of a continuously running step chain on which passengers can stand and be transported to different floors. The escalator drive device refers to the mechanical part that drives the escalator to operate, among which the reduction device is an important component. It is usually located between the drive motor and the escalator step chain to reduce the output speed of the motor and provide the required torque.

[0003] In the prior art, the reduction device of the escalator usually adopts worm gear and helical gear transmission reduction. Compared with the reduction of spur gear, this type of driving method has the advantages of smooth transmission, large load-bearing capacity and low noise. Therefore, it is widely used in the reduction device of escalator. However, the transmission efficiency of the turbine and worm is low, so it consumes more power energy. If spur gear reduction is used, the transmission efficiency can be improved accordingly. At the same time, due to its meshing characteristics, its transmission is not as stable as that of worm gear and helical gear, and corresponding noise will be generated during transmission.

[0004] Therefore, it is necessary to propose a spur gear reduction device that can improve transmission smoothness, reduce transmission noise and correspondingly reduce energy loss. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a speed reducing device for an escalator driving device which can reduce transmission noise and energy loss.

[0006] In order to solve the above technical problems, the utility model provides a reduction device for an escalator driving device, including an escalator reduction box, a side seat is fixedly installed on the outer side of the escalator reduction box, an output shaft and an escalator input shaft are rotatably installed on the left and right sides of the escalator reduction box respectively, a first reinforcing casing is arranged on the outer side of the output shaft, and a transmission mechanism is arranged inside the escalator reduction box; the transmission mechanism includes a first gear, the first gear is fixedly installed on the inner side of the escalator input shaft, a stabilizing shaft is fixedly installed on the left side of the first gear, a lower rotating shaft is arranged on the lower side of the stabilizing shaft, and the right end of the lower rotating shaft is rotatably installed A second gear is fixedly installed on the inner wall of the escalator reduction box and on the right side of the lower rotating shaft, the second gear is meshed with the first gear, a second reinforcing casing is provided with a rotating sleeve on the outer side of the middle part of the lower rotating shaft, a base is fixedly connected below the second reinforcing casing, a third gear is fixedly installed on the left end of the lower rotating shaft, a fourth gear is arranged above the third gear, the fourth gear is meshed with the third gear, the fourth gear is fixedly installed on the output shaft, a groove is provided on the right end of the output shaft, steel balls are evenly arranged on the side walls of the groove, and the left end of the stabilizing shaft is inserted into the inner side of the groove.

[0007] Preferably, four groups of the side seats are arranged along the periphery of the escalator reduction box, and mounting holes are opened on the side seats.

[0008] Preferably, the axial center lines of the escalator input shaft and output shaft coincide with each other.

[0009] Preferably, the thickness of the second gear is greater than that of the first gear and the number of teeth of the second gear is greater than that of the first gear.

[0010] Preferably, the thickness of the fourth gear is greater than that of the third gear and the number of teeth of the fourth gear is greater than that of the third gear.

[0011] Preferably, the axis centerline of the lower rotating shaft is located directly below the escalator input shaft.

[0012] Preferably, the first gear, the second gear, the third gear and the fourth gear are all made of high-grade carburized steel.

[0013] Preferably, the escalator reduction box is made of stainless steel.

[0014] Compared with the related art, the deceleration device for an escalator driving device proposed by the utility model has the following beneficial effects:

[0015] In the utility model, the reduction device for an escalator driving device described has high transmission efficiency, and each gear component has a simple structure, and the manufacturing cost is relatively low, which is convenient for later maintenance and repair, compared with the transmission worm gear and helical gear transmission reduction mode. It not only reduces the loss of energy in the transmission process, but also is convenient for later repair and maintenance, and the production cost is relatively low. In solving the problem of unstable transmission performance caused by traditional spur gear transmission reduction, in the utility model, the axial centerline positions of the escalator input shaft and the output shaft are set to coincide, and a first reinforcing casing is set on the outside of the output shaft to make the output shaft more stable when rotating. At the same time, a stabilizing shaft is set at the end of the escalator input shaft, and the stabilizing shaft is inserted into the groove at the end of the output shaft, and a steel ball is added to keep the two in a rotational connection relationship and the axial centerlines coincide. This design makes the escalator transmission The axes of the input shaft, the stabilizing shaft and the output shaft are colinear, and a rotational connection relationship is established between them by inserting into the grooves, and the rotational connection relationship is relied on to maintain the restriction of the axis colinearity. Under the joint action, the transmission stability of the escalator input shaft and the output shaft is enhanced. At the same time, two rotational connections are set on the lower rotating shaft where the transmission teeth responsible for the meshing action are located. One is the rotational connection relationship between the lower rotating shaft and the inner wall of the escalator reduction box, and the other is the rotational connection and fixation with the lower rotating shaft using a second reinforced casing. The setting of the double rotational connection point makes the rotation of the lower rotating shaft more stable. In summary, the utility model adopts reinforced rotational connection points to establish the action relationship between the transmission shafts, so that each transmission shaft is more stable when rotating, and then the transmission meshing gears fixedly installed on the transmission shaft are more stable when meshing transmission, and the transmission noise is also reduced accordingly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a reduction device for an escalator drive device proposed in the utility model Figure 1 ;

[0017] Figure 2 A schematic diagram of the three-dimensional structure of a reduction device for an escalator drive device proposed in the utility model Figure 2 ;

[0018] Figure 3 A schematic diagram of the cutaway three-dimensional structure of a reduction device for an escalator drive device proposed in the utility model Figure 1 ;

[0019] Figure 4 A schematic diagram of the cutaway three-dimensional structure of a reduction device for an escalator drive device proposed in the utility model Figure 2 ;

[0020] Figure 5 for Figure 4 Enlarged schematic diagram of part A in the middle.

[0021] In the figure: 1. escalator reduction box; 2. side seat; 3. mounting hole; 4. escalator input shaft; 5. output shaft; 6. first reinforced casing; 7. first gear; 8. stabilizing shaft; 9. lower rotating shaft; 10. second gear; 11. second reinforced casing; 12. base; 13. third gear; 14. fourth gear; 15. groove; 16. steel ball. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0023] Reference Figure 1-5 , please refer to Figure 1-Figure 5 ,in, Figure 1 A schematic diagram of the three-dimensional structure of a reduction device for an escalator drive device proposed in the utility model Figure 1 ; Figure 2 A schematic diagram of the three-dimensional structure of a reduction device for an escalator drive device proposed in the utility model Figure 2 ; Figure 3 A schematic diagram of the cutaway three-dimensional structure of a reduction device for an escalator drive device proposed in the utility model Figure 1 ; Figure 4 A schematic diagram of the cutaway three-dimensional structure of a reduction device for an escalator drive device proposed in the utility model Figure 2 ; Figure 5 for Figure 4 A reduction device for an escalator driving device comprises: an escalator reduction box 1, a side seat 2 is fixedly installed on the outside of the escalator reduction box 1, an output shaft 5 and an escalator input shaft 4 are rotatably installed on the left and right sides of the escalator reduction box 1, a first reinforcing casing 6 is arranged on the outside of the output shaft 5, and a transmission mechanism is arranged inside the escalator reduction box 1; the transmission mechanism comprises a first gear 7, the first gear 7 is fixedly installed on the inside of the escalator input shaft 4, a stabilizing shaft 8 is fixedly installed on the left side of the first gear 7, a lower rotating shaft 9 is arranged on the lower side of the stabilizing shaft 8, and the right end of the lower rotating shaft 9 is rotatably installed on the escalator reduction box 1. A second gear 10 is fixedly installed on the inner wall and on the right side of the lower rotating shaft 9, and the second gear 10 is meshed with the first gear 7. A second reinforcing casing 11 is rotatably sleeved on the outer side of the middle part of the lower rotating shaft 9, and a base 12 is fixedly connected below the second reinforcing casing 11. A third gear 13 is fixedly installed on the left end of the lower rotating shaft 9, and a fourth gear 14 is arranged above the third gear 13, and the fourth gear 14 is meshed with the third gear 13. The fourth gear 14 is fixedly installed on the output shaft 5. Four groups of side seats 2 are arranged along the periphery of the escalator reduction box 1, and a mounting hole 3 is opened on the side seat 2.

[0024] In this embodiment, the axial centerline positions of the escalator input shaft 4 and the output shaft 5 coincide with each other, the axial centerline position of the lower rotating shaft 9 is located directly below the escalator input shaft 4, a groove 15 is opened at the right end of the output shaft 5, steel balls 16 are evenly distributed on the side walls of the groove 15, and the left end of the stabilizing shaft 8 is inserted into the inner side of the groove 15.

[0025] Through the above-mentioned arrangement, the groove 15 is opened at the right end position of the output shaft 5, and the escalator input shaft 4 is inserted into the groove 15 through the stabilizing shaft 8 fixedly installed at its left end. The steel balls 16 arranged in the groove 15 maintain a rotational connection relationship between the escalator input shaft 4 and the output shaft 5. At the same time, the steel balls 16 arranged in the groove 15 are used to reduce the friction loss during the reverse rotation. In addition, the rotational relationship also keeps the axial center lines of the escalator input shaft 4 and the output shaft 5 consistent, and further limits the rotational connection relationship, so that the escalator input shaft 4 and the output shaft 5 are more stable during the transmission process.

[0026] In this embodiment, the second gear 10 is thicker than the first gear 7 and has more teeth than the first gear 7 , and the fourth gear 14 is thicker than the third gear 13 and has more teeth than the third gear 13 .

[0027] Through the arrangement in the above manner, the first gear 7 fixed on the escalator input shaft 4 is smaller than the second gear 10 on the lower rotating shaft 9. When the escalator input shaft 4 is rotated for driving, the lower rotating shaft 9 is decelerated by one level under the meshing transmission action of the second gear 10 and the first gear 7. After the deceleration, the lower rotating shaft 9 obtains a larger torque. When the lower rotating shaft 9 rotates, it drives the third gear 13 on the left end to rotate. Since the number of teeth of the fourth gear 14 fixed on the output shaft 5 is greater than the third gear 13 on the lower rotating shaft 9, under the meshing transmission action of the fourth gear 14 and the third gear 13, the output shaft 5 is decelerated by two levels compared with the escalator input shaft 4, and the torque amplification is performed twice. Regarding the design that the thickness of the large gear is greater than the width of the small gear in this method, the meshing of the large and small gears during the transmission process is more stable.

[0028] In this embodiment, the first gear 7, the second gear 10, the third gear 13 and the fourth gear 14 are all made of high-grade carburized steel, and the escalator reduction box 1 is made of stainless steel.

[0029] Through the above-mentioned setting, high-grade carburized steel materials such as 20CrMnMo, 20CrNi2Mo, 17CrNiMo6, etc. are suitable for making reducer gears due to their excellent contact strength and fatigue strength indicators. At the same time, carburizing treatment can increase the surface hardness, improve the wear resistance and fatigue life of the gears. The escalator reducer 1 is designed with stainless steel material, which increases the corrosion resistance of the reducer body.

[0030] The working principle of a deceleration device for an escalator driving device provided by the utility model is as follows:

[0031] When in use, the escalator input shaft 4 in the device is connected to the power output shaft of the escalator, and the output shaft 5 is connected to the power receiving shaft in the escalator. Under the rotation of the power output shaft in the escalator, the escalator input shaft 4 is driven to rotate. When the escalator input shaft 4 rotates inversely, the first gear 7 fixedly mounted thereon rotates at a constant speed. Due to the meshing transmission effect of the second gear 10 and the first gear 7, and the setting that the number of teeth of the second gear 10 is greater than that of the first gear 7, the lower rotating shaft 9 obtains a speed reduction effect, and at the same time, the torque on the lower rotating shaft 9 also obtains a reinforcement effect. The third gear 13 at the left end of the lower rotating shaft 9 rotates synchronously with the lower rotating shaft 9, and the fourth gear 14 fixed on the output shaft 5 is meshed with the third gear 13 for transmission. Since the number of teeth of the fourth gear 14 is greater than that of the third gear 13, under the meshing transmission of the fourth gear 14 and the third gear 13, the output shaft 5 is decelerated twice compared with the escalator input shaft 4, and is also accompanied by two torque amplification effects, so that the speed of the power output shaft in the escalator driven by the output shaft 5 is reduced, and a larger torque is obtained, thereby providing a stable driving force for the escalator.

[0032] Compared with the related art, the deceleration device for an escalator driving device provided by the utility model has the following beneficial effects:

[0033] The utility model provides a reduction gear device for an escalator driving device. The utility model adopts reinforced rotating connection points to establish a working relationship between each transmission shaft, so that each transmission shaft is more stable when rotating, and then each transmission meshing gear fixedly installed on the transmission shaft is more stable during meshing transmission, and the transmission noise is also reduced accordingly, which further reduces the energy loss in the transmission process and improves practicality.

[0034] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A reduction gear for an escalator driving device, characterized in that: The escalator reduction box (1) comprises a side seat (2) fixedly mounted on the outside of the escalator reduction box (1), an output shaft (5) and an escalator input shaft (4) rotatably mounted on the left and right sides of the escalator reduction box (1), a first reinforcing casing (6) being arranged on the outside of the output shaft (5), and a transmission mechanism being arranged inside the escalator reduction box (1); The transmission mechanism comprises a first gear (7), the first gear (7) being fixedly mounted on the inner side of the escalator input shaft (4), a stabilizing shaft (8) being fixedly mounted on the left side of the first gear (7), a lower rotating shaft (9) being arranged on the lower side of the stabilizing shaft (8), the right end of the lower rotating shaft (9) being rotatably mounted on the inner wall of the escalator reduction box (1) and a second gear (10) being fixedly mounted on the right side of the lower rotating shaft (9), the second gear (10) being meshed with the first gear (7), a second reinforcing casing (11) being rotatably sleeved on the outer side of the middle part of the lower rotating shaft (9), A base (12) is fixedly connected below the second reinforcing casing (11), a third gear (13) is fixedly mounted on the left end of the lower rotating shaft (9), a fourth gear (14) is arranged above the third gear (13), the fourth gear (14) is meshed with the third gear (13), the fourth gear (14) is fixedly mounted on the output shaft (5), a groove (15) is provided at the right end of the output shaft (5), steel balls (16) are evenly arranged on the side wall of the groove (15), and the left end of the stabilizing shaft (8) is inserted into the inner side of the groove (15).

2. A reduction gear for an escalator drive device according to claim 1, characterized in that: Four groups of the side seats (2) are arranged along the periphery of the escalator reduction box (1), and mounting holes (3) are provided on the side seats (2).

3. The reduction gear device for an escalator driving device according to claim 1, characterized in that: The axis center lines of the escalator input shaft (4) and the output shaft (5) coincide with each other.

4. The reduction gear device for an escalator driving device according to claim 1, characterized in that: The thickness of the second gear (10) is greater than that of the first gear (7), and the number of teeth of the second gear (10) is greater than that of the first gear (7).

5. The reduction gear device for an escalator driving device according to claim 1, characterized in that: The thickness of the fourth gear (14) is greater than the thickness of the third gear (13), and the number of teeth of the fourth gear (14) is greater than that of the third gear (13).

6. The reduction gear device for an escalator driving device according to claim 1, characterized in that: The axis centerline of the lower rotating shaft (9) is located directly below the escalator input shaft (4).

7. The reduction gear device for an escalator driving device according to claim 1, characterized in that: The first gear (7), the second gear (10), the third gear (13) and the fourth gear (14) are all made of high-grade carburized steel.

8. The reduction gear device for an escalator driving device according to claim 1, characterized in that: The escalator reduction box (1) is made of stainless steel.

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