Multi-host driving structure of escalator

Abstract

The utility model provides an escalator multi-host driving structure which comprises a transition shaft, a step shaft, a transition chain and a plurality of driving devices, a transmission chain wheel is installed in the middle of the transition shaft, and first transition chain wheels are installed at the two ends of the transition shaft respectively. Step chain wheels are installed at the two ends of the step shaft correspondingly, and second transition chain wheels connected with the step shaft are installed on the outer sides of the step chain wheels correspondingly. The first transition chain wheel and the second transition chain wheel are sleeved with the transition chains, and the driving device is connected with the transmission chain wheels through the transmission chains. At least one driving device is arranged between the transition shaft and the step shaft, and when at least two driving devices are arranged between the transition shaft and the step shaft, the driving devices are arranged in a staggered mode. The multi-host driving structure of the escalator is smaller in width and lower in manufacturing cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of escalator, more accurately relates to a kind of escalator multi-host drive structure. BACKGROUND

[0002] Escalator is widely used in public places to realize the personnel conveying function between different floors. Escalator is composed of truss, step (pedal), step (pedal) chain, chain guide rail, traction machine, apron, inner and outer cover plate, comb plate, floor plate, handrail system, electrical control system and other components. The chain of escalator is driven by the driving host, which drives the rotation of the step. For the application scene of large floor height difference, it is necessary to use a large power driving host to realize driving. The large power driving host is large in size and high in energy consumption, and cannot be applied to small space escalator installation scene.

[0003] The applicant has applied for a patent for driving the rotation of escalator step by four driving hosts. In this scheme, the four driving hosts are arranged side by side in two groups, respectively connected with the main shaft through transmission chain, and drive the rotation of the main shaft. This scheme can provide large driving power by using several small driving hosts in power and size, and the overall space occupation is small, which is better applicable to the installation space of escalator. However, the width of the driving host part in this scheme is large, which is difficult to install in the scene with limited width. In addition, the existing scheme drives the rotation of the transition shaft with small diameter by four driving hosts. The transition shaft drives the rotation of the step main shaft with large diameter through transition chain, so as to drive the large by the small. The transition shaft bears large load, which needs to be made of high-strength material, increasing the production cost. In order to ensure that the number of teeth on the step main shaft is sufficient, the transition chain needs to use multiple rows of chain wheels with short pitch, and the specifications of the transition chain and the step chain are different.

[0004] In summary, the field needs an escalator multi-host drive structure with smaller width to adapt to more narrow installation space. UTILITY MODEL CONTENTS

[0005] Therefore, the purpose of the utility model is to provide an escalator multi-host drive structure. The transition sprocket of the transition shaft and the transition sprocket of the step shaft have the same diameter. The transition shaft has a transmission sprocket with a diameter not less than that of the transition sprocket. The transmission chain of the driving device is connected with the transmission sprocket to reduce the overall width and the manufacturing cost.

[0006] Another purpose of the utility model is to provide an escalator multi-host drive structure. A double braking assembly is combined with the transition shaft to improve the safety in use.

[0007] In order to achieve the above object, the utility model provides a kind of escalator multi-host drive structure, including transition shaft, step shaft, transition chain and several drive devices, transition shaft middle part installs transmission sprocket, the first transition sprocket is respectively installed in the both ends of transition shaft;The step sprocket is respectively installed in the both ends of step shaft, the second transition sprocket connected with the step shaft is respectively installed in the outside of step sprocket;The transition chain is sleeved in the outside of the first transition sprocket and the second transition sprocket, the drive device is connected with the transmission chain and the transmission sprocket respectively by the transmission chain;At least one drive device is arranged between the transition shaft and the step shaft, when at least two drive devices are arranged between the transition shaft and the step shaft, the drive device is staggered arrangement.

[0008] Preferably, the first transition sprocket and the second transition sprocket are the same diameter, the second transition sprocket and the step sprocket are the same diameter, and the diameter of the transmission sprocket is not less than the diameter of the first transition sprocket.

[0009] Preferably, the step sprocket has step sprocket teeth, the second transition sprocket has transition sprocket teeth, the step sprocket and the second transition sprocket are coaxially arranged, and the step sprocket teeth and the transition sprocket teeth are arranged with half teeth.

[0010] Preferably, the transition shaft includes a central shaft body, an external shaft body, and a plurality of bearings, the central shaft body is fixedly connected to the truss of the escalator at both ends, the external shaft body is sleeved outside the central shaft body, and the external shaft body is rotatably connected to the central shaft body through a plurality of bearings.

[0011] Preferably, the external shaft body is externally connected to a connecting flange, and the transmission sprocket is fixedly connected to the external shaft body through the connecting flange.

[0012] Preferably, the external shaft body has a convex ring around the external shaft body on the outside, and the transmission sprocket is fixedly connected to the convex ring.

[0013] Preferably, the external shaft body has a convex portion protruding outward, the cross section of the convex portion is U-shaped, and the transmission sprocket is fixedly connected to the convex portion.

[0014] Preferably, a double braking assembly is included, the first transition sprocket is connected with the transition shaft through a transition disc, the double braking assembly acts on the transition disc, the double braking assembly includes an inner side braking assembly and an outer side braking assembly; the inner side braking assembly includes an inner side braking driving member, an inner side braking pawl and an inner side braking ratchet, the inner side braking driving member is combinedly installed with a truss of the escalator, the inner side braking ratchet is annularly protruded outside the transition disc, the inner side braking pawl is arranged in cooperation with the inner side braking ratchet, and the inner side braking pawl is in transmission connection with the inner side braking driving member.

[0015] Preferably, the inner side braking ratchet includes an inner side ratchet and an inner side gland, the inner side gland is in contact with the inner side ratchet on a side of the inner side ratchet away from the transition disc, and the inner side gland is fixedly connected with the transition disc through a plurality of inner side torque bolts; and the inner side braking pawl is arranged in cooperation with a side edge of the inner side ratchet.

[0016] Preferably, the outer side driving assembly includes an outer side braking driving member, an outer side braking pawl and an outer side braking ratchet, the outer side braking driving member is combinedly installed with the truss of the escalator, the outer side braking ratchet is annularly located on an outer side surface of the transition disc, the outer side braking pawl is arranged in cooperation with the outer side braking ratchet, and the outer side braking pawl is in transmission connection with the outer side braking driving member.

[0017] Preferably, the outer side braking ratchet includes an outer side ratchet and an outer side gland, the outer side gland is in contact with the outer side ratchet on a side of the outer side ratchet away from the transition disc, and the outer side gland is fixedly connected with the transition disc through a plurality of outer side torque bolts; and the outer side braking pawl is arranged in cooperation with a side edge of the outer side ratchet.

[0018] Preferably, the driving device is fixedly connected with the truss of the escalator through a fixing device, or the driving device is fixedly connected with a mounting surface of the escalator through the fixing device.

[0019] Compared with the prior art, the escalator multi-host driving structure disclosed by the utility model has the advantages that the width is smaller, the manufacturing cost is lower, and the use safety is better. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating laboriously.

[0021] AsFigure 1 Fig. 1 shows a schematic view of a structure of a multi-host drive structure of an escalator according to the present application.

[0022] As shown in Figure 2 Fig. 2 shows a schematic view of a variant of a structure of a multi-host drive structure of an escalator according to the present application.

[0023] As shown in Figure 3 Fig. 3 shows a schematic view of a partial structure of a step shaft of a multi-host drive structure of an escalator according to the present application.

[0024] As shown in Figure 4 Fig. 4 shows a sectional view of a transition shaft of a multi-host drive structure of an escalator according to the present application.

[0025] As shown in Figure 5 Fig. 5 shows a sectional view of a first variant of a transition shaft of a multi-host drive structure of an escalator according to the present application.

[0026] As shown in Figure 6 Fig. 6 shows a sectional view of a second variant of a transition shaft of a multi-host drive structure of an escalator according to the present application.

[0027] As shown in Figure 7 Fig. 7 shows a sectional view of a third variant of a transition shaft of a multi-host drive structure of an escalator according to the present application.

[0028] As shown in Figure 8 Fig. 8 shows a schematic view of a structure of a double-braking assembly of a multi-host drive structure of an escalator according to the present application.

[0029] As shown in Figure 9 Fig. 9 shows a sectional view of a double-braking assembly of a multi-host drive structure of an escalator according to the present application in combination with a transition shaft.

[0030] As shown in Figure 10 Fig. 10 shows a schematic view of a driving device of a double-braking assembly of a multi-host drive structure of an escalator according to the present application.

[0031] As shown in Figure 11 Fig. 11 shows a schematic view of a variant of a driving device of a double-braking assembly of a multi-host drive structure of an escalator according to the present application. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] AsFigure 1 As shown, the escalator multi-host drive structure of the application includes three drive devices 1, a transition shaft 2, a step shaft 3, and a transition chain 4; the transition shaft 2 is provided with a transmission sprocket 21 in the middle, and the transition shaft 2 is provided with a first transition sprocket 22 at both ends; the step shaft 3 is provided with a step sprocket 31 at both ends, and the step sprocket 31 is provided with a second transition sprocket 32 connected with the step shaft 3 outside; the transition chain 4 is sleeved outside the first transition sprocket 22 and the second transition sprocket 32, and the drive device 1 is connected with the transmission sprocket 21 through the transmission chain 11. One of the drive devices 1 is arranged between the transition shaft 2 and the step shaft 3, and the two drive devices 1 are arranged side by side on the side of the transition shaft 2 away from the step shaft 3. The first transition sprocket 22 and the second transition sprocket 32 have the same diameter, the second transition sprocket 32 has the same diameter as the step sprocket 31, and the diameter of the transmission sprocket 21 is not less than the diameter of the first transition sprocket 22. The escalator multi-host drive structure reduces the width by changing the arrangement position of the drive device 1, and the transition shaft structure with a larger diameter can reduce the strength requirement of the material, thereby reducing the production cost.

[0034] Referring to Figure 2 As a variant of the escalator multi-host drive structure of the application, the difference lies in that it includes four drive devices 1, two of which are arranged between the transition shaft 2 and the step shaft 3, and the other two are arranged side by side on the side of the transition shaft 2 away from the step shaft 3, and are arranged in staggered arrangement along the transition shaft 2 towards the step shaft 3, which is suitable for small space installation.

[0035] Referring to Figure 3 The step sprocket 31 is provided with step sprocket teeth 311, and the second transition sprocket 32 is provided with transition sprocket teeth 321. The step sprocket 31 and the second transition sprocket 32 are coaxially arranged, and the step sprocket teeth 311 and the transition sprocket teeth 321 are arranged in half-tooth staggered manner. The transition chain 4 and the step chain pitch are the same on the step sprocket teeth 311 and the transition sprocket teeth 321. Since the step sprocket teeth 311 and the transition sprocket teeth 321 are arranged in half-tooth staggered manner, the outer link plates of one of the transition chain 4 and the step chain and the inner link plates of the other correspond, and can not interfere with each other at a closer distance. The distance between the step sprocket 31 and the second transition sprocket 32 is also closer, which helps to further reduce the width.

[0036] Referring to Figure 4, the transition shaft 2 comprises a central shaft body 201, an outer shaft body 202 and a plurality of bearings 203, the central shaft body 201 is fixedly connected with the truss of the escalator at both ends, the outer shaft body 202 is sleeved outside the central shaft body 201, and the outer shaft body 201 is rotatably connected with the central shaft body 201 through the plurality of bearings 203. The transition shaft 2 adopts a split structure, which can reduce the torsional load of the transition shaft 2 while ensuring the overall strength, thereby prolonging the service life. The outer shaft body 202 is externally connected with a large-size connecting flange 204, and the transmission sprocket 21 is fixedly connected with the outer shaft body 202 through the connecting flange 204, so that the connecting strength is higher.

[0037] Referring to Figure 5 , as a variant of the transition shaft 2, the difference lies in that the outer shaft body 202 has a convex ring 204A surrounding the outer shaft body 202, and the transmission sprocket 21 is fixedly connected with the convex ring 204A.

[0038] Referring to Figure 6 , as another variant of the transition shaft 2, the difference lies in that the outer shaft body 202 has a convex portion 204B protruding outward, the cross section of the convex portion 204B is U-shaped, and the transmission sprocket 21 is fixedly connected with the convex portion 204B.

[0039] Referring to Figure 7 , as another variant of the transition shaft 2, the difference lies in that the outer shaft body 202 has a convex portion 204C protruding outward, the cross section of the convex portion 204C is U-shaped, and the transmission sprocket 21 is fixedly connected with the convex portion 204C.

[0040] Referring to Figure 8 and Figure 9 , the first transition sprocket 22 is connected with the transition shaft 2 through a transition disc 221, and the escalator multi-host drive structure further comprises a double braking assembly acting on the transition disc 221, and the double braking assembly comprises an inner braking assembly and an outer braking assembly.

[0041] The inner side brake assembly comprises an inner side brake driving member 51, an inner side brake pawl 52 and an inner side brake ratchet 53. The inner side brake driving member 51 is combinedly installed with the truss of the escalator. The inner side brake ratchet 53 is annularly projected outside the first transition sprocket 22. The inner side brake pawl 52 is cooperatively arranged with the inner side brake ratchet 53. The inner side brake pawl 52 is drivingly connected with the inner side brake driving member 51. The inner side brake driving member 51 is preferably an electromagnet. The inner side brake driving member 51 is controlled to drive the inner side driving pawl 52 to move. The braking is realized through the cooperation of the inner side brake pawl 52 and the inner side brake ratchet 53. Further, the inner side brake ratchet 53 comprises an inner side ratchet 531 and an inner side gland 532. The two sides of the inner side ratchet 531 are respectively butted against the first transition sprocket 22 and the inner side gland 532 through inner side friction plates 533. The inner side gland 532 is fixedly connected with the transition disc 221 through a plurality of inner side torque bolts 534. The inner side brake pawl 52 is cooperatively arranged with the side of the inner side ratchet 531.

[0042] The outer side driving assembly comprises an outer side brake driving member 61, an outer side brake pawl 62 and an outer side brake ratchet 63. The outer side brake driving member 61 is combinedly installed with the truss of the escalator. The outer side brake ratchet 63 is annularly located outside the outer side surface of the transition disc 221. The outer side brake pawl 62 is cooperatively arranged with the outer side brake ratchet 63. The outer side brake pawl 62 is drivingly connected with the outer side brake driving member 61. The outer side brake driving member 61 is preferably an electromagnet. The outer side brake driving member 61 is controlled to drive the outer side driving pawl 62 to move. The braking is realized through the cooperation of the outer side brake pawl 62 and the outer side brake ratchet 63. Further, the outer side brake ratchet 63 comprises an outer side ratchet 631 and an outer side gland 632. The two sides of the outer side ratchet 631 are respectively butted against the transition disc 221 and the outer side gland 632 through outer side friction plates 633. The outer side gland 632 is fixedly connected with the transition disc 221 through a plurality of outer side torque bolts 634. The outer side brake pawl 62 is cooperatively arranged with the side of the outer side ratchet 631.

[0043] Referring to Figure 10 , the driving device 1 is fixedly connected with the truss 100 of the escalator through the fixing device 12. The fixing device 12 is not limited to be located at the bottom, the middle or the upper part of the main body of the driving device 1.

[0044] Referring to Figure 11 , the driving device 1A is fixedly connected with the mounting surface of the escalator through the fixing device 12A. The fixing device 12A is preferably located at the bottom of the driving device 1.

[0045] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An escalator multi-host drive structure, characterized in that: It includes a transition shaft, a step shaft, a transition chain and several driving devices, a transmission sprocket is installed in the middle of the transition shaft, and first transition sprockets are installed at both ends of the transition shaft; step sprockets are installed at both ends of the step shaft, and second transition sprockets connected to the step shaft are installed on the outer sides of the step sprockets; the transition chain is sleeved on the outside of the first transition sprocket and the second transition sprocket, and the driving devices are connected to the transmission sprockets through the transmission chains; At least one of the driving devices is arranged between the transition shaft and the step shaft. When at least two of the driving devices are arranged between the transition shaft and the step shaft, the driving devices are staggered.

2. The escalator multi-host drive structure according to claim 1, characterized in that: The first transition sprocket and the second transition sprocket have the same diameter, the second transition sprocket has the same diameter as the step sprocket, and the diameter of the transmission sprocket is not less than the diameter of the first transition sprocket.

3. The escalator multi-host drive structure according to claim 2, characterized in that: The step sprocket is provided with step sprocket teeth, and the second transition sprocket is provided with transition sprocket teeth. The step sprocket and the second transition sprocket are coaxially arranged, and the step sprocket teeth and the transition sprocket teeth are staggered by half a tooth.

4. The escalator multi-host drive structure according to claim 1, characterized in that: The transition shaft includes a central shaft, an external shaft and several bearings. Both ends of the central shaft are fixedly connected to the truss of the escalator. The external shaft is sleeved outside the central shaft, and the external shaft is rotatably connected to the central shaft through several bearings.

5. The escalator multi-host drive structure according to claim 4, characterized in that: The external shaft body is externally connected to a connecting flange, and the transmission sprocket is fixedly connected to the external shaft body via the connecting flange.

6. The escalator multi-host drive structure according to claim 4, characterized in that: The exterior of the external shaft body is provided with a convex ring surrounding the external shaft body, and the transmission sprocket is fixedly connected to the convex ring.

7. The escalator multi-host drive structure according to claim 4, characterized in that: The external shaft body has a protruding portion protruding outward, the cross section of the protruding portion is U-shaped, and the transmission sprocket is fixedly connected to the protruding portion.

8. The escalator multi-host drive structure according to claim 1, characterized in that: It includes a double brake assembly, the first transition sprocket is connected to the transition shaft through a transition disk, the double brake assembly acts on the transition disk, the double brake assembly includes an inner brake assembly and an outer brake assembly; the inner brake assembly includes an inner brake driver, an inner brake pawl and an inner brake ratchet, the inner brake driver is installed in combination with the truss of the escalator, the inner brake ratchet protrudes in a ring shape from the outside of the transition disk, the inner brake pawl is matched with the inner brake ratchet, and the inner brake pawl is transmission-connected to the inner brake driver.

9. The escalator multi-host drive structure according to claim 8, characterized in that: The inner brake ratchet includes an inner ratchet and an inner pressure cover. The inner pressure cover is located on the side of the inner ratchet away from the transition plate and contacts the inner ratchet, and the inner pressure cover is fixedly connected to the transition plate by a plurality of inner torque bolts; the inner brake pawl is arranged in cooperation with the side of the inner ratchet.

10. The escalator multi-host driving structure according to claim 8, characterized in that: The outer drive assembly includes an outer brake drive, an outer brake pawl and an outer brake ratchet. The outer brake drive is installed in combination with the truss of the escalator. The outer brake ratchet is annular and located on the outer side of the transition plate. The outer brake pawl is cooperated with the outer brake ratchet, and the outer brake pawl is transmission-connected to the outer brake drive.

11. The escalator multi-host driving structure according to claim 10, characterized in that: The outer brake ratchet includes an outer ratchet and an outer pressure cover. The outer pressure cover is located on the side of the outer ratchet away from the transition plate and contacts the outer ratchet, and the outer pressure cover is fixedly connected to the transition plate through a number of outer torque bolts; the outer brake pawl is arranged in cooperation with the side of the outer ratchet.

12. The escalator multi-host driving structure according to claim 1, characterized in that: The driving device is fixedly connected to the truss of the escalator through the fixing device, or the driving device is fixedly connected to the installation surface of the escalator through the fixing device.

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