Escalator and hand strap driving assembly thereof

Abstract

The utility model relates to the field of passenger conveying, in particular to an escalator handrail belt driving assembly which comprises a handrail wheel, a sliding mechanism and a tensioning assembly. The sliding mechanism comprises a supporting frame, a plurality of transverse shafts connected to the supporting frame, sliding pieces controllably sliding on the transverse shafts in the first direction and positioning pieces controllably sliding on the sliding pieces in the second direction. The handrail wheel is provided with a linkage part and a friction part which coaxially and synchronously rotate, and the handrail belt moves along with rotation of the friction part. The tensioning assembly comprises a transition wheel, a first chain and a second chain. The transition wheel is a double-row chain wheel and is rotationally connected to the positioning piece, and the first chain and the second chain are both carried on the transition wheel and bypass the linkage parts of the driving wheel and the handrail wheel correspondingly. And the driving wheel controllably rotates to drive the handrail wheel to synchronously rotate, so that the handrail belt is driven to move. The position of the transition wheel is adjusted through the sliding mechanism, so that the first chain and the second chain are kept tensioned. The whole structure is simple and stable, and high practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the field of passenger transportation, in particular to an escalator and a handrail belt driving component thereof. Background Art

[0002] An escalator is a fixed electric drive device used to transport passengers upward or downward between different floors of a building. Because its stairway is in a continuous circular motion, it has a high transport efficiency and is therefore widely used in shopping malls, public transportation stations and other places with large passenger flow. The stairway of an escalator is driven by a special chain conveyor, and the handrails on both sides of the stairway are driven by a special belt conveyor. In order to keep the stairway and the handrails on both sides running synchronously, the handrail wheel that drives the handrail is usually linked to the drive wheel that drives the stairway through a chain.

[0003] At present, in order to keep the handrail wheel and the driving wheel rotating synchronously for a long time, the chain arranged between the handrail wheel and the driving wheel needs to be kept in a tensioned state. Currently, it is usually necessary to set up multiple tensioning wheels to assist in the tensioning of the chain, which occupies a large space and causes the handrail belt drive assembly to be larger in size. Utility Model Content

[0004] The utility model aims to provide an escalator handrail belt driving assembly which occupies a small space.

[0005] In order to achieve the above object, the utility model provides the following technical solutions:

[0006] An escalator handrail belt drive assembly, comprising:

[0007] The handrail wheel has a linking portion and a friction portion which are coaxially arranged and rotate synchronously, wherein the friction portion contacts the handrail belt and is used to drive the handrail belt to move along with the rotation of the linking portion;

[0008] The sliding mechanism comprises a support frame, a plurality of transverse axes connected to the support frame, a sliding member controllably sliding on the plurality of transverse axes along a first direction, and a positioning member controllably sliding on the sliding member along a second direction, wherein an angle is formed between the first direction and the second direction;

[0009] The tensioning assembly includes a transition wheel and a first chain and a second chain for tensioning. The transition wheel is rotatably connected to the positioning member, and includes a first mating portion and a second mating portion that rotate coaxially and synchronously. The first chain revolves around a driving wheel and the first mating portion that rotate controllably along a central axis, driving the first mating portion to rotate synchronously with the driving wheel. The second chain revolves around the link portion and the second mating portion of the handrail wheel, driving the handrail wheel to rotate synchronously with the second mating portion.

[0010] Optionally, a first slide extending along the first direction is provided on the plurality of transverse axes, a second slide extending along the second direction is provided on the positioning member, a plurality of first sliders respectively slidably connected to the first slide are provided on the side of the sliding member close to the transverse axis, a second slider slidably connected to the second slide is provided on the side of the sliding member close to the positioning member, and the first direction and the second direction are located in the same vertical plane.

[0011] Optionally, the first slideway and the second slideway are both oblong holes, the first slider expands away from the end of the sliding member, so that the first slideway is clamped in the middle of the first slider, and the second slider expands away from the end of the sliding member, so that the second slideway is clamped in the middle of the second slider.

[0012] Optionally, the sliding member is a frame structure.

[0013] Optionally, the sliding mechanism also includes multiple adjustment components, some of which are connected between the support frame and the sliding member along the first direction to adjust the position of the sliding member in the first direction, and some of which are connected between the sliding member and the positioning member along the second direction to adjust the position of the positioning member in the second direction.

[0014] Optionally, the adjustment assembly includes a screw, a plurality of nuts matched with the screw and an adjustment hole, the adjustment hole is a through hole perpendicular to the screw, the screw passes through the adjustment hole, and the two nuts sleeved on the screw respectively abut against the two sides of the adjustment hole, several groups of the screws of the adjustment assemblies are arranged along the first direction, the ends of the screws are connected to the sliding member, and the adjustment holes are arranged on the support frame, and several groups of the screws of the adjustment assemblies are arranged along the second direction, the ends of the screws are connected to the positioning member, and the adjustment holes are arranged on the sliding member.

[0015] Optionally, the adjustment component includes a driving member, a rotating shaft and a sliding sleeve, the inner wall of the sliding member and the outer wall of the rotating shaft are respectively provided with mutually matching threaded structures, the driving member drives the rotating shaft to rotate controllably, the sliding sleeve of any one of the adjustment components is fixedly connected to the support frame and the driving member is fixedly connected to the sliding member, and the sliding sleeve of another adjustment component is fixedly connected to the sliding member and the driving member is fixedly connected to the positioning member.

[0016] Optionally, the escalator handrail belt driving assembly further includes a camera for monitoring the extension direction of the first chain and the second chain.

[0017] Optionally, the first direction and the second direction are perpendicular to each other.

[0018] In a second aspect, the utility model further provides an escalator, comprising the above-mentioned escalator handrail belt driving assembly.

[0019] The beneficial effect of the utility model is that the first chain and the second chain respectively make the transition wheel linked with the driving wheel and the handrail wheel, so that the handrail wheel and the driving wheel rotate synchronously. By setting a sliding mechanism, the transition wheel set on the positioning member can slide controllably along the first direction and the second direction, so that the tension of the first chain and the second chain can be achieved by adjusting the position of the transition wheel. Only one transition wheel and two matching chains are used, that is, the two functions of linkage and tensioning are realized, the structure is simple, the space occupied is small and the cost is low. Since the first chain and the second chain both surround the transition wheel, the distance difference that the transition wheel needs to adjust during tensioning is half of the extended length of the chain, so that the transition wheel has a better tensioning effect. The provision of multiple horizontal axes improves the support capacity of the horizontal axis to the sliding member, helps to maintain the setting direction of the transition wheel, and prevents the direction of the transition wheel from being offset, causing the chain to fall off from the transition wheel, the driving wheel or the handrail wheel.

[0020] Furthermore, the movement of the transition wheel is achieved by sliding the bolts in the oblong holes, which has a simple structure, low cost and is not prone to failure due to track deformation.

[0021] Furthermore, the sliding member adopts a frame structure, which helps to reduce material costs and the weight of the sliding mechanism, and can also reduce the risk of interference between various components, helping to reduce the difficulty of installation and maintenance operations.

[0022] Furthermore, the positions of the sliding member and the positioning member are adjusted by means of a screw and a nut, which has a simple structure, low cost, simple adjustment operation and occupies a small space, thus helping to reduce the risk of interference between components and helping to reduce the overall volume.

[0023] Furthermore, the driving member drives the sliding member and the positioning member to slide, and no manual adjustment is required, which saves time and effort and helps to reduce the difficulty of operation.

[0024] Furthermore, by observing whether the first chain and the second chain are loose by a camera and adjusting them by a driving member, remote chain tensioning can be achieved, thereby reducing the difficulty of operation.

[0025] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1This is a schematic diagram of the structure of an escalator handrail drive assembly shown in Embodiment 1 of the present utility model;

[0027] Figure 2 This is a schematic structural diagram of a sliding member shown in the first embodiment of the utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the positioning member shown in the first embodiment of the utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the adjustment component shown in the second embodiment of the present utility model.

[0030] Legend: 101-driving wheel, 1-handle wheel, 11-linking part, 2-sliding mechanism, 21-support frame, 211-vertical frame, 22-horizontal axis, 221-first slide, 23-sliding member, 231-first slider, 232-second slider, 233-fixing member, 24-positioning member, 241-second slide, 242-groove, 25-adjusting assembly, 251-screw, 252-nut, 253-driving member, 254-rotating shaft, 255-sleeve, 31-transition wheel, 311-first matching part, 312-second matching part, 32-first chain, 33-second chain. DETAILED DESCRIPTION

[0031] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0035] See also Figure 1 The escalator handrail driving assembly protected by the utility model application includes a handrail wheel 1, a sliding mechanism 2 and a tensioning assembly. The sliding mechanism 2 includes a support frame 21, a plurality of transverse shafts 22 connected to the support frame 21, a sliding member 23 slidably connected to each transverse shaft 22, and a positioning member 24 slidably connected to the sliding member 23. The sliding member 23 slides controllably along a first direction, and the positioning member 24 slides controllably along a second direction, and an angle is formed between the first direction and the second direction. The handrail wheel 1 has a linking portion 11 and a friction portion that rotate coaxially and synchronously, and the handrail belt is displaced with the rotation of the friction portion. The tensioning assembly includes a transition wheel 31, a first chain 32 and a second chain 33. The transition wheel 31 is rotatably connected to the positioning member 24, and has a sprocket-shaped first matching portion 311 and a second matching portion 312. The first chain 32 is tensioned around the first matching portion 311 and the driving wheel 101, and the second chain 33 is tensioned around the linking portion 11 and the second matching portion 312 of the handrail wheel 1. The driving wheel 101 can rotate in a controllable manner, driving the handrail wheel 1 to rotate synchronously, thereby driving the handrail belt to move.

[0036] The first chain 32 and the second chain 33 respectively link the transition wheel 31 with the driving wheel 101 and the handrail wheel 1, so that the handrail wheel 1 and the driving wheel 101 rotate synchronously. By setting the sliding mechanism 2, the transition wheel 31 set on the positioning member 24 can slide controllably in the first direction and the second direction, so that the tension of the first chain 32 and the second chain 33 is achieved by adjusting the position of the transition wheel 31. Only one transition wheel 31 and two matching chains are used, that is, the two functions of linkage and tensioning are realized, the structure is simple, the space occupied is small and the cost is low. Since the first chain 32 and the second chain 33 both surround the transition wheel 31, the distance difference that the transition wheel 31 needs to adjust during tensioning is half of the extended length of the chain, so that the transition wheel 31 has a better tensioning effect. The provision of multiple transverse shafts 22 improves the supporting capacity of the transverse shaft 22 to the sliding member 23, helps to maintain the setting direction of the transition wheel 31, and prevents the direction of the transition wheel 31 from being offset, causing the chain to fall off from the transition wheel 31, the driving wheel 101 or the handrail wheel 1.

[0037] Please refer to the following examples for details.

[0038] Embodiment 1:

[0039] The escalator shown in a preferred embodiment of the present application includes a chain conveyor, a handrail and a handrail drive assembly. The ladder path of the chain conveyor performs a cyclic reciprocating motion, and the handrail drive assembly, driven by the chain conveyor, drives the handrail to perform a cyclic motion synchronous with the ladder path of the chain conveyor.

[0040] The chain conveyor includes a main machine, a driving wheel 101, a conveying chain, a slideway and a plurality of steps. The driving wheel 101 is controllably rotated under the drive of the main machine, the conveying chain is mounted on the driving wheel 101, and the plurality of steps are fixedly connected to the conveying chain and slide on the slideway, and are displaced with the movement of the conveying chain, thereby realizing the circular motion of the ladder path formed by connecting the plurality of steps. Since the specific structure of the chain conveyor is a prior art, it will not be described here.

[0041] See also Figure 1 The handrail belt driving assembly includes a handrail wheel 1, a sliding mechanism 2 and a tensioning assembly. The tensioning assembly includes a transition wheel 31, a first chain 32 and a second chain 33. The first chain 32 is arranged between the transition wheel 31 and the driving wheel 101, so that the transition wheel 31 and the driving wheel 101 are linked; the second chain 33 is arranged between the handrail wheel 1 and the transition wheel 31, so that the handrail wheel 1 and the transition wheel 31 are linked. The transition wheel 31 is rotatably connected to the sliding mechanism 2, and is controllably displaced under the action of the sliding mechanism 2, so that the first chain 32 and the second chain 33 are kept in a tensioned state, so that the handrail wheel 1 and the driving wheel 101 rotate synchronously.

[0042] The handrail wheel 1 includes a link part 11 and a friction part which are coaxially arranged in parallel and fixedly connected to each other. The link part 11 is in the shape of a sprocket and the friction part is in the shape of a pulley. The annular handrail belt is in a tensioned state, arranged parallel to the handrail wheel 1 and in contact with the friction part of the handrail wheel 1, and moves cyclically with the rotation of the handrail wheel 1 under the action of friction force.

[0043] See also Figure 1 , Figure 2 and Figure 3The sliding mechanism 2 includes a support frame 21, two transverse shafts 22, a sliding member 23 and a positioning member 24. The support frame 21 includes two vertical frames 211, and the vertical frames 211 are made of angle irons and are arranged opposite to each other. Two transverse shafts 22 with the same structure are connected between the two vertical frames 211 and are arranged in the horizontal direction. The direction parallel to the transverse shaft 22 is the first direction, and the direction parallel to the vertical frame 211 is the second direction. Two oblong holes extending along the first direction are arranged on each of the transverse shafts 22, forming a total of four first slideways 221. The sliding member 23 is constructed into a square frame structure, having a first side surface and a second side surface opposite to each other. The nail rods of the four rivets pass through the four oblong holes of the two transverse shafts 22 respectively, and are fixed at the four corners of the first side surface of the sliding member 23, forming four first sliders 231, and the heads of the rivets cannot pass through the oblong holes on the transverse shaft 22, so that the sliding member 23 has only the freedom to slide along the first direction. When any first slider 231 is located at one end of the first slideway 221, each first slider 231 is located at the same end of the first slideway 221, so that the sliding distance of the sliding member 23 is larger. Four second sliders 232 with the same structure as the first slider 231 are connected to the second side surface of the sliding member 23, and the four second sliders 232 are flush with each other to form a rectangular shape. The positioning member 24 is configured as a plate-like structure, and four oblong holes matching the second sliders 232 are provided on the positioning member 24 as the second slideway 241. The four second slideways 241 extend along the second direction and have the same length, so that the positioning member 24 has the freedom to slide along the second direction relative to the sliding member 23.

[0044] In this embodiment, the numbers of the horizontal axis 22 , the first slideway 221 , the first slider 231 , the second slideway 241 , and the second slider 232 are all selected according to the actual installation environment, and in other embodiments, they can cooperate with each other for adaptive adjustment.

[0045] The sliding mechanism 2 also includes an adjustment component 25. In this embodiment, the adjustment component 25 includes a screw rod 251, two nuts 252 matched with the screw rod 251, and an adjustment hole. The adjustment hole is arranged perpendicular to the screw rod 251, the screw rod 251 passes through the adjustment hole, and the nuts 252 are fastened to the screw rod 251 and arranged on both sides of the adjustment hole. By adjusting the positions of the two nuts 252, the relative distance between the end of the screw rod 251 and the adjustment hole can be controllably adjusted. In this embodiment, two groups of adjustment components 25 are arranged. The screw rod 251 of one group of adjustment components 25 is arranged along the first direction, one end of the screw rod 251 is fixedly connected to the side of the sliding member 23 close to a vertical frame 211, and the adjustment hole is formed in the vertical frame 211. The other group of adjustment components 25 is arranged between the sliding member 23 and the positioning member 24. A fixed block perpendicular to the sliding member 23 is fixedly connected to the top middle of the second side surface of the sliding member 23, and a square groove 242 is formed on the top of the positioning member 24. The screw 251 is arranged along the second direction, and one end of the screw 251 is fixedly connected to the groove 242 of the positioning member 24. The adjustment hole is formed in the fixed block. By setting the groove 242, it helps to reduce the height of the positioning member 24 in the vertical direction, reduce the structural weight, reduce the occupied space, and help reduce the overall volume of the handrail drive assembly, thereby improving the space utilization inside the escalator.

[0046] The transition wheel 31 is rotatably connected to the positioning member 24, and adopts a double-row sprocket, including a first matching portion 311 and a second matching portion 312 that rotate coaxially and synchronously, and the first matching portion 311 and the second matching portion 312 are both sprocket-shaped. The first matching portion 311 of the transition wheel 31, the first chain 32 and the driving wheel 101 cooperate with each other and are arranged in the same vertical plane, and the first chain 32 surrounds the first matching portion 311 of the transition wheel 31 and the driving wheel 101. The second matching portion 312 of the transition wheel 31, the second chain 33 and the link portion 11 of the handrail wheel 1 cooperate with each other and are arranged in the same vertical plane, and the second chain 33 surrounds the second matching portion 312 of the transition wheel 31 and the link portion 11 of the handrail wheel 1. The position of the transition wheel 31 is adjusted by the adjustment component 25, so that the first chain 32 and the second chain 33 are both kept in a tensioned state, so that the handrail wheel 1 and the transition wheel 31 rotate synchronously, and the transition wheel 31 and the driving wheel 101 rotate synchronously, so that the handrail belt and the conveyor chain operate synchronously.

[0047] The handrail drive assembly in this embodiment also includes a camera, which is electrically connected to an external display to monitor and display the extension direction of the first chain 32 and the second chain 33 in real time, assist in determining their tensioning state, and help to make timely tension adjustments.

[0048] The beneficial effects of the utility model are: reducing the occupied space and production cost of the handrail belt drive assembly, reducing the difficulty of adjusting the chain tension, and helping to improve the convenience of escalator maintenance.

[0049] Embodiment 2:

[0050] See also Figure 1 and Figure 4 , the difference between this embodiment and the first embodiment is that the adjustment assembly 25 in this embodiment includes a driving member 253, a rotating shaft 254 and a sleeve 255. The driving member 253 is a motor, the rotating shaft 254 is a screw 251 connected to the rotating shaft of the motor, the inner wall of the sleeve 255 is provided with a thread matched with the outer wall of the screw 251, and the sleeve 255 is sleeved on the screw 251 and has a small friction force with the screw 251. Two groups of adjustment assemblies 25 are provided in this embodiment. One group of adjustment assemblies 25 is arranged horizontally, and its driving member 253 is installed on the side of the sliding member 23 close to the side of the vertical frame 211, and the sleeve 255 is fixedly connected to the vertical frame 211 so that the rotating shaft 254 is parallel to the horizontal axis 22. When the driving member 253 drives the rotating shaft 254 to rotate, the sliding sleeve 255 cannot rotate with the rotating shaft 254, so the sliding sleeve 255 slides on the rotating shaft 254 under the action of the thread, thereby driving the sliding member 23 to slide along the direction of the rotating shaft 254. Another set of adjustment components 25 with the same structure is arranged between the sliding member 23 and the positioning member 24, driving the positioning member 24 to slide in the vertical direction, which will not be described in detail here.

[0051] Embodiment three:

[0052] The only difference between this embodiment and the second embodiment is that the positioning member 24 in this embodiment is a plate-like structure with no hollow area in the middle.

[0053] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An escalator handrail drive assembly, characterized in that: include: A handrail wheel (1) comprises a linking portion (11) and a friction portion which are coaxially arranged and rotate synchronously, wherein the friction portion contacts the handrail belt and is used to drive the handrail belt to move along with the rotation of the linking portion (11); The sliding mechanism (2) comprises a support frame (21), a plurality of transverse axes (22) connected to the support frame (21), a sliding member (23) controllably sliding on the plurality of transverse axes (22) along a first direction, and a positioning member (24) controllably sliding on the sliding member (23) along a second direction, wherein an angle is formed between the first direction and the second direction; The tensioning assembly comprises a transition wheel (31) and a first tensioning chain (32) and a second tensioning chain (33); the transition wheel (31) is rotatably connected to the positioning member (24), and comprises a first matching portion (311) and a second matching portion (312) that rotate coaxially and synchronously; the first chain (32) revolves around a driving wheel (101) and the first matching portion (311) that rotate controllably along a central axis, driving the first matching portion (311) to rotate synchronously with the driving wheel (101); the second chain (33) revolves around the link portion (11) and the second matching portion (312) of the handrail wheel (1), driving the handrail wheel (1) to rotate synchronously with the second matching portion (312).

2. The escalator handrail drive assembly according to claim 1, characterized in that: A plurality of the transverse axes (22) are each provided with a first slideway (221) extending along the first direction, a second slideway (241) extending along the second direction is provided on the positioning member (24), a plurality of first sliders (231) respectively slidably connected to the first slideway (221) are provided on the side of the sliding member (23) close to the transverse axis (22), a second slider (232) slidably connected to the second slideway (241) is provided on the side of the sliding member (23) close to the positioning member (24), and the first direction and the second direction are located in the same vertical plane.

3. The escalator handrail drive assembly according to claim 2, characterized in that: The first slideway (221) and the second slideway (241) are both oblong holes. The first slider (231) expands away from the end of the sliding member (23), so that the first slideway (221) is clamped in the middle of the first slider (231). The second slider (232) expands away from the end of the sliding member (23), so that the second slideway (241) is clamped in the middle of the second slider (232).

4. The escalator handrail drive assembly according to claim 2, characterized in that: The sliding member (23) is a frame structure.

5. The escalator handrail drive assembly according to claim 1, characterized in that: The sliding mechanism (2) further comprises a plurality of adjustment components (25), wherein a plurality of the adjustment components (25) are connected between the support frame (21) and the sliding member (23) along the first direction, and are used to adjust the position of the sliding member (23) in the first direction; and a plurality of the adjustment components (25) are connected between the sliding member (23) and the positioning member (24) along the second direction, and are used to adjust the position of the positioning member (24) in the second direction.

6. The escalator handrail drive assembly according to claim 5, characterized in that: The adjusting assembly (25) comprises a screw rod (251), a plurality of nuts (252) matched with the screw rod (251), and an adjusting hole, wherein the adjusting hole is a through hole perpendicular to the screw rod (251), the screw rod (251) passes through the adjusting hole, and the two nuts (252) sleeved on the screw rod (251) respectively abut against two sides of the adjusting hole, a plurality of groups of the screw rods (251) of the adjusting assembly (25) are arranged along the first direction, the ends of the screw rods (251) are connected to the sliding member (23), and the adjusting hole is arranged on the supporting frame (21), and a plurality of groups of the screw rods (251) of the adjusting assembly (25) are arranged along the second direction, the ends of the screw rods (251) are connected to the positioning member (24), and the adjusting hole is arranged on the sliding member (23).

7. The escalator handrail drive assembly according to claim 5, characterized in that: The adjusting component (25) comprises a driving member (253), a rotating shaft (254) and a sliding sleeve (255); the inner wall of the sliding member (23) and the outer wall of the rotating shaft (254) are respectively provided with mutually matching threaded structures; the driving member (253) drives the rotating shaft (254) to rotate controllably; the sliding sleeve (255) of any adjusting component (25) is fixedly connected to the supporting frame (21) and the driving member (253) is fixedly connected to the sliding member (23); the sliding sleeve (255) of another adjusting component (25) is fixedly connected to the sliding member (23) and the driving member (253) is fixedly connected to the positioning member (24).

8. The escalator handrail drive assembly according to claim 1, characterized in that: It also includes a camera for monitoring the extension direction of the first chain (32) and the second chain (33).

9. The escalator handrail drive assembly according to any one of claims 1 to 8, characterized in that: The first direction and the second direction are perpendicular to each other.

10. An escalator, characterized in that: It comprises an escalator handrail belt drive assembly as described in any one of claims 1-9.

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