CN215207989U

CN215207989U - Handrail area overspeed device tensioner and automatic escalator

Info

Publication number: CN215207989U
Application number: CN202121777547.4U
Authority: CN
Inventors: 朱毅
Original assignee: Winone Elevator Co Ltd
Current assignee: Winone Elevator Co Ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2021-12-17
Anticipated expiration: 2031-07-30

Abstract

The application provides a handrail area overspeed device tensioner and automatic escalator. Handrail area overspeed device tensioner includes: a frame; a support plate; the tensioning wheel is used for abutting against the handrail belt and is rotatably arranged on the support plate; the counterweight structure is arranged on the support plate; and the guide assembly is used for guiding the support plate to move up and down, the guide assembly is arranged on the rack, and the support plate is connected with the guide assembly. According to the handrail belt tensioning device, the support plate is provided with the tensioning wheel, the counterweight structure and the guiding assembly, the support plate is supported on the machine frame, and the support plate is guided to lift; when using, the gravity control take-up pulley through the counter weight structure supports the dynamics of pressing the handrail area to in ambient temperature change, when the handrail area expends with heat and contracts with cold, the take-up pulley can rise along with the length variation in handrail area under the action of gravity of counter weight structure, makes the take-up pulley support the dynamics of pressing the handrail area and keep unanimous, and then makes the rate of tension in handrail area keep unanimous, in order to realize the automatically regulated of handrail area rate of tension.

Description

Handrail area overspeed device tensioner and automatic escalator

Technical Field

The application belongs to the technical field of elevators, and more specifically relates to a handrail belt tensioning device and an escalator.

Background

The error of the moving speed of the hand strap of the escalator relative to the actual speed of the steps is required to be within the range of 0% to + 2%. Therefore, the handrail belt must be tensioned moderately. At present, the common handrail belt tensioning device mostly adopts a screw to adjust the force of a tensioning wheel against the handrail belt so as to adjust the tension degree. However, due to seasonal temperature changes, the handrail belt expands with heat and contracts with cold, which causes tension changes of the handrail belt, especially in an escalator with a large lifting height. Therefore, these escalator maintenance requirements require adjusting the handrail belt tension at least once a quarter, adding extra work to the maintenance work.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a handrail area overspeed device tensioner and automatic escalator to solve the handrail area overspeed device tensioner who exists among the prior art and adjust the back to handrail area rate of tension, the rate of tension of handrail area can be along with the problem that the temperature changes.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions: there is provided a handrail belt tensioning device comprising:

a frame;

a support plate;

the tensioning wheel is used for abutting against the handrail belt and is rotatably arranged on the support plate;

the counterweight structure is arranged on the support plate; and the number of the first and second groups,

the guide assembly is used for guiding the support plate to move up and down relative to the rack, the guide assembly is installed on the rack, and the support plate is connected with the guide assembly.

In an alternative embodiment, the number of the tension wheels is multiple, and the plurality of the tension wheels are arranged in an arc-shaped arrangement.

In an alternative embodiment, the counterweight structure is located at the lower side of the tensioning wheel, and a gap for the handrail to pass through is formed between the counterweight structure and the tensioning wheel;

and/or the counterweight structure is positioned on the upper side of the tensioning wheel.

In an alternative embodiment, the counterweight structure includes a carrier mounted on the plate and a plurality of counterweights mounted on the carrier.

In an optional embodiment, the bracket is provided with a support rod, and the counterweight block is provided with a through hole which is matched and sleeved on the support rod.

In an optional embodiment, the side of the support plate close to the tension wheel is provided with the counterweight structure;

or/and one side of the support plate, which is deviated from the tension wheel, is provided with the counterweight structure.

In an alternative embodiment, the guiding assembly includes a plurality of guiding shafts arranged in parallel and guiding sleeves respectively slidably sleeved on the guiding shafts, the guiding shafts are fixedly connected with the frame, and the guiding sleeves are fixedly connected with the support plate.

In an optional embodiment, at least two guide sleeves are sleeved on one guide shaft at intervals.

In an optional embodiment, the handrail tensioning device further comprises a stopper for limiting the lifting stroke of the support plate, the stopper being mounted on the guide shaft.

In an alternative embodiment, the frame comprises two support beams and two connecting beams arranged in parallel, the support beams and the connecting beams are connected to form a rectangular frame structure, and the guide assembly is connected with the two connecting beams.

Another object of the embodiment of the present application is to provide an escalator, which includes a truss, a handrail, and a handrail tensioning device according to any one of the embodiments above, wherein the tensioning wheel is pressed against the handrail, and the frame is mounted on the truss.

In an optional embodiment, the truss comprises a lower horizontal section, an inclined section and an upper horizontal section which are connected in sequence, and the rack is installed at a position of the inclined section close to the lower horizontal section.

The beneficial effects of handrail area overspeed device tensioner that this application embodiment provided lie in: compared with the prior art, the handrail belt tensioning device has the advantages that the support plate is provided with the tensioning wheel and the counterweight structure, and the guide assembly is arranged, so that the support plate is supported on the frame, and the support plate is guided to lift; when using, the gravity control take-up pulley through the counter weight structure supports the dynamics of pressing the handrail area to in ambient temperature change, when the handrail area expends with heat and contracts with cold, the take-up pulley can lift along with the length variation in handrail area under the action of gravity of counter weight structure, makes the take-up pulley support the dynamics of pressing the handrail area and keep unanimous, and then makes the rate of tension in handrail area keep unanimous, with the automatically regulated who realizes the rate of tension in handrail area, need not artifical maintenance and adjust when guaranteeing, reduces dimension guarantor work load.

The escalator that this application embodiment provided's beneficial effect lies in: compared with the prior art, the escalator of this application has used the handrail area overspeed device tensioner of above-mentioned embodiment, has the technical effect of the handrail area overspeed device tensioner of above-mentioned embodiment, no longer explains here.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a front view schematically illustrating a handrail belt tensioning device according to a first embodiment of the present application;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a schematic front view of a handrail belt tensioning device according to a second embodiment of the present application;

fig. 4 is a schematic cross-sectional view illustrating a handrail belt tensioning device according to a third embodiment of the present application;

fig. 5 is a schematic cross-sectional view illustrating a handrail belt tensioning device according to a fourth embodiment of the present application;

fig. 6 is a schematic front view of an escalator provided in an embodiment of the present application;

fig. 7 is an enlarged structural view of a portion B in fig. 6.

Wherein, in the drawings, the reference numerals are mainly as follows:

100-an escalator;

10-handrail belt 30 tensioning device; 11-a frame; 111-support beam; 112-connecting beam; 12-a support plate; 13-a tensioning wheel; 131-a support shaft; 132-a bearing; 14-a counterweight structure; 141-a bracket; 142-a counterweight; 143-support bars; 144-a locking element; 15-a guide assembly; 151-guide axis; 152-a guide sleeve; 16-a stopper; 161-clamp retainer ring;

20-truss; 21-a lower horizontal section; 22-an inclined section; 23-upper horizontal section;

30-hand strap.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. The terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered limiting of the application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Reference throughout this specification to "one embodiment," "some embodiments," or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Referring to fig. 1 and 2, and to fig. 6, a handrail belt tensioning device 10 provided by the present application will now be described. The handrail belt tensioning device 10 comprises a frame 11, a support plate 12, a tensioning wheel 13, a counterweight structure 14 and a guide assembly 15; wherein:

the frame 11 forms a support body of the handrail belt tensioner 10 to facilitate installation, support and use of the handrail belt tensioner 10.

The stay 12 is used to support the tension pulley 13 and the weight structure 14 to assemble the weight structure 14 with the tension pulley 13 as a whole, so that the gravity of the weight structure 14 can be applied to the tension pulley 13 through the stay 12.

Referring to fig. 7, the tension sheave 13 is used to press the handrail belt 30, thereby adjusting the tension of the handrail belt 30. The tension wheel 13 is rotatably mounted on the stay 12, and the tension wheel 13 is supported by the stay 12. The tension wheel 13 is rotatably mounted on the support plate 12, when the tension wheel 13 is pressed against the handrail 30, the tension wheel 13 rotates along with the movement of the handrail 30, so that the resistance of the tension wheel 13 to the handrail 30 is reduced, and the handrail 30 can move flexibly.

The weight structure 14 is mounted on the brace 12, and the weight structure 14 is supported by the brace 12.

The counterweight structure 14 primarily provides gravity. Because the tensioning wheel 13 and the counterweight structure 14 are both arranged on the support plate 12, when the tensioning wheel 13 presses against the handrail belt 30, the weights of the counterweight structure 14, the support plate 12 and the tensioning wheel 13 act on the handrail belt 30 to press against the handrail belt 30, so as to adjust the tension of the handrail belt 30.

During assembly, especially during field installation, the weight of the counterweight structure 14 can be adjusted to adjust the force of the tension wheel 13 pressing against the handrail belt 30, so as to adjust the tension of the handrail belt 30.

The guide assembly 15 connects the frame 11 and the stay 12 to slidably mount the stay 12 on the frame 11 and guide the stay 12 to move up and down on the frame 11 to ensure the stay 12 moves smoothly on the frame 11.

When in use, the tensioning wheel 13 is pressed against the handrail 30 to adjust the tension of the handrail 30; when the handrail 30 moves, the guiding assembly 15 guides the tensioning wheel 13, the support plate 12 and the counterweight structure 14 to move along the designated direction, so that the tensioning wheel 13, the support plate 12 and the counterweight structure 14 are ensured to be stable, and the tensioning wheel 13, the support plate 12 and the counterweight structure 14 are prevented from being driven to shake when the handrail 30 moves.

Compared with the prior art, the handrail belt tensioning device 10 provided by the application has the advantages that the tension wheel 13 and the counterweight structure 14 are arranged on the support plate 12, the guide assembly 15 is arranged, the support plate 12 is supported on the frame 11, and the support plate 12 is guided to lift; when using, the gravity through counter weight structure 14 controls the dynamics that take-up pulley 13 supported and presses handrail area 30 to in ambient temperature change, when handrail area 30 expends with heat and contracts with cold, take-up pulley 13 can go up and down along with handrail area 30's length variation under counter weight structure 14's action of gravity, make take-up pulley 13 support and press handrail area 30 dynamics keep unanimous, and then make handrail area 30's rate of tension keep unanimous, in order to realize the automatically regulated of handrail area 30 rate of tension, adjust when needing not artifical dimension to protect, reduce dimension and guarantee work load.

In one embodiment, referring to fig. 1 and 2, the tension pulley 13 can be supported on the support plate 12 by using a support shaft 131, so that the tension pulley 13 can be rotatably mounted on the support plate 12. For example, the tension pulley 13 is rotatably mounted on the support shaft 131, and the support shaft 131 is fixed on the support plate 12, so that the tension pulley 13 is rotatably mounted on the support plate 12. With the structure, the tensioning wheel 13 can be conveniently arranged on the support plate 12.

In one embodiment, the support shaft 131 is mounted with a bearing 132, and the tension pulley 13 is mounted on the bearing 132 so that the tension pulley 13 can rotate flexibly. It is to be understood that a bushing may be provided on the support shaft 131 and the tension pulley 13 may be mounted on the bushing to achieve rotational mounting of the tension pulley 13 on the support shaft 131. Of course, the tension pulley 13 may be directly rotatably mounted on the support shaft 131.

In one embodiment, the support shaft 131 is a bolt to facilitate mounting the tension pulley 13 on the support plate 12. It will be appreciated that a cylindrical shaft could be used for the support shaft 131, and that threads would be provided on one end of the cylindrical shaft to secure the cylindrical shaft to the bracket 12 via a nut. Of course, other pivot arrangements may be used to mount the tensioner 13 to the bracket 12.

In one embodiment, the tension wheel 13 is provided in plurality, and the plurality of tension wheels 13 are arranged in an arc-shaped arrangement. A plurality of take-up pulley 13 is the arc setting of arranging and indicates: the center axes of the tension pulleys 13 are located on the same arc, that is, the center axes of the tension pulleys 13 are located on the same arc when viewed in the axial direction of the tension pulleys 13.

Set up a plurality of take-up pulleys 13 that are the arc and arrange, can make a plurality of take-up pulleys 13 cooperate and support and press handrail area 30, set up the radius of a plurality of take-up pulleys 13 place circular arcs great, when supporting and pressing handrail area 30 like this, make handrail area 30 bending deformation's camber less, reduce the resistance to handrail area 30 removes in a flexible way.

In one embodiment, the number of tension pulleys 13 is four. In other embodiments, the number of the tension pulleys 13 can be three, five, six, seven, etc. It will be appreciated that for some smaller escalators the number of tension pulleys 13 may be reduced accordingly.

In one embodiment, the weight structure 14 includes a bracket 141 and a plurality of weights 142, the weights 142 are mounted on the bracket 141, the weights 142 are supported by the bracket 141, and the weights 142 mainly provide weight to increase the weight of the weight structure 14. The bracket 141 is mounted on the support plate 12, and supports the weight 142 via the support plate 12. A bracket 141 is provided to support the fixed weight 142.

A plurality of weight blocks 142 are overlapped on the bracket 141, so that the number of the weight blocks 142 can be adjusted according to the tension degree of the handrail belt 30 to be tested when the handrail belt is installed on site, so as to adjust the tension force of the handrail belt.

It will be appreciated that a hook, or detent, may be provided on the support 12 to mount the weight 142 directly on the support 12. Of course, a basket can be further provided, the weight block 142 is placed in the basket, and then the basket is hung on the support plate 12, so that the number of the weight blocks 142 can be conveniently adjusted, and the weight of the weight structure 14 can be conveniently adjusted.

In one embodiment, the bracket 141 can be formed with a cross-sectional L-shape, such that one side of the bracket 141 can be mounted on the support plate 12, and the other side can be used to support the weight 142. The bracket 141 has a simple structure and is convenient to assemble. It is understood that other structures for supporting the weight 142 may be used for the bracket 141.

In one embodiment, the bracket 141 has a support rod 143 mounted thereon. The counterweight block 142 is provided with a through hole, when the counterweight block 142 is installed, the supporting rod 143 can penetrate through the through hole in the counterweight block 142 to position the counterweight block 142, the counterweight block 142 is conveniently fixed on the bracket 141, and the counterweight structure is kept stable when the escalator runs.

In one embodiment, a plurality of support rods 143, such as two or three, may be disposed on the bracket 141 to cooperate with the positioning weight 142 to more stably position the weight 142. In addition, when the supporting rod 143 is a cylindrical rod, the plurality of supporting rods 143 can prevent the weight block 142 from rotating. It is understood that when the cross section of the supporting rod 143 is a non-circular structure, such as a rectangle, a square, a triangle, or an ellipse, and the shape of the through hole on the weight 142 is matched with the shape of the supporting rod 143, one supporting rod 143 can also serve to position the weight 142.

In one embodiment, a locking member 144 is installed on the supporting rod 143 to lock the weight 142 on the bracket 141 to stably fix the weight 142 on the bracket 141.

In one embodiment, the supporting rod 143 may be a screw to be fixed on the bracket 141 by a nut, so that the supporting rod 143 is conveniently fixed on the bracket 141. It is understood that other rod-shaped structures can be used for the support rod 143, such as a metal column can be used as the support rod 143, and the support rod 143 is welded to the bracket 141.

In one embodiment, the support rod 143 is a threaded rod and the locking member 144 is a nut to facilitate locking the weight. Of course, the locking member 144 may have other structures to lock the weight 142.

In one embodiment, referring to fig. 3, the guiding assembly 15 includes a plurality of guiding shafts 151 and a guiding sleeve 152, the guiding shafts 151 are slidably sleeved with the guiding sleeve 152, the guiding shafts 151 are disposed in parallel, and the guiding sleeve 152 is connected to the supporting plate 12, so that the supporting plate 12 is slidably mounted on the guiding shafts 151. Each guide shaft 151 is mounted on the frame 11 to slidably mount the guide sleeve 152 on the frame 11, and further slidably mount the stay 12, the tension pulley 13, and the counterweight structure 14 on the frame 11.

The guide sleeve 152 is guided by the guide shaft 151 to guide the stay 12, the tension pulley 13, and the counterweight structure 14 to guide the tension pulley 13 to move on the frame 11.

A plurality of guide shafts 151 are arranged in parallel, so that the plurality of guide shafts 151 cooperate with the guide support plate 12, the tension wheel 13 and the counterweight structure 14 to move, and the support plate 12, the tension wheel 13 and the counterweight structure 14 are ensured to move stably.

In the present embodiment, the two guide shafts 151 are provided, and the two guide shafts 151 are located at both ends of one side of the stay 12. In practice, the two guide shafts 151 can be installed at positions farther from both ends of the support plate 12, so that the support plate 12 can be disposed at a position between the two guide shafts 151 to make full use of the space between the two guide shafts 151 to reduce the volume of the handrail tensioning device 10. It is to be understood that the guide shaft 151 is provided on one side of the stay 12, and the guide shaft 151 may be provided in three, four, or the like.

In one embodiment, the guide shaft 151 may be coated with a lubricant so that the guide sleeve 152 slides flexibly on the guide shaft 151, thereby guiding the strip 12 to slide flexibly along the guide shaft 151.

In one embodiment, at least two guide sleeves 152 are mounted on one guide shaft 151 to more smoothly support the support plate 12 and to ensure balance on both sides of the support plate 12. It is understood that two guide sleeves 152 may be provided on the guide shaft 151. Of course, at least two guide sleeves 152 may be fitted over each guide shaft 151.

It will be appreciated that the guide assembly 15 may also employ cross-guides that slidably mount the brackets 12 to the frame 11. Of course, the guide assembly 15 may also be a rail slider assembly.

In one embodiment, the guide sleeve 152 may be mounted on the guide shaft 151 by a ball sleeve or a linear motion bearing, etc., so that the guide sleeve 152 flexibly slides on the guide shaft 151. The guide sleeve 152 may also use a sliding sleeve to flexibly slide on the guide shaft 151.

In one embodiment, the handrail tensioning device 10 further comprises a stopper 16, the stopper 16 is supported on the frame 11, and the stopper 16 is used for limiting the lifting stroke of the support plate 12 so as to play a role of safety protection, in particular, when the handrail 30 is damaged and broken, the counterweight 142 can be prevented from falling, and the safety of the handrail tensioning device 10 can be improved. In addition, the support plate 12, the tension pulley 13 or the counterweight structure 14 can be protected from colliding with the frame 11 during assembly.

In one embodiment, the stop 16 can include a clip retainer ring 161, the clip retainer ring 161 being mounted on the guide shaft 151 to retain the guide sleeve 152 and thereby limit the travel of the guide sleeve 152 along the guide shaft 151 and thereby limit the sliding travel of the strip 12. In addition, the use of the clip retainer ring 161 allows maintenance personnel to flexibly adjust the upper and lower limit positions of the limiter 16.

It is understood that the stop 16 may also include a stop disposed on the frame 11, and the stop is used to stop the guide sleeve 152 to limit the sliding stroke of the guide sleeve 152 along the guide shaft 151, and thus the sliding stroke of the support plate 12. The strip 12 can also be stopped directly by a stop to limit the sliding travel of the strip 12.

In one embodiment, stoppers 16 may be respectively installed at both ends of the strip 12 in the sliding direction to limit the moving stroke of the strip 12 in the frame 11. For example, the stopper 16 is mounted on the upper end of the frame 11, so that the position where the handrail belt 30 pulls the stay 12, the tension pulley 13, and the counterweight structure 14 can be limited to be raised. And a stopper 16 is arranged at the lower end of the frame 11, so that the position of the support plate 12 which descends can be limited.

In one embodiment, clip retainers 161 may be mounted on both ends of the guide shaft 151 to limit the travel of the fulcrum plate 12 in the frame 11.

In one embodiment, the frame 11 includes two support beams 112 and two connecting beams 111, the two support beams 112 are disposed in parallel, and the two connecting beams 111 connect two ends of the two support beams 112, thereby forming a frame-like frame structure. The frame 11 has simple structure, convenient assembly and low cost. The guide assembly 15 is connected to two connection beams 111 to support the guide assembly 15.

In one embodiment, when the guide assembly 15 includes the guide shaft 151, both ends of the guide shaft 151 may be respectively connected to the two connection beams 111 to support the guide assembly 15.

It will be appreciated that the frame 11 may be formed of other configurations, as long as it is capable of supporting the guide assembly 15.

In one embodiment, the side of the support plate 12 close to the tension pulley 13 is provided with the counterweight structure 14, that is, the counterweight structure 14 and the tension pulley 13 are located on the same side of the support plate 12, so that the support plate 12, the tension pulley 13 and the counterweight structure 14 form the integral center of gravity, and the side of the support plate 12, the tension pulley 13 and the counterweight structure 14 is closer to the tension pulley 13 in the direction perpendicular to the support plate 12, so that the gravity of the support plate 12, the tension pulley 13 and the counterweight structure formed into the integral body can better act on the handrail belt 30.

Referring to fig. 1, in one embodiment, the counterweight structure 14 is located on the underside of the tension wheel 13. Since the function of the counterweight structure 14 is mainly to provide gravity, the structural center of gravity of the whole formed by the brace 12, the counterweight structure 14 and the tension wheel 13 is closer to the counterweight structure 14. The counterweight structure 14 is positioned at the lower side of the tension pulley 13, so that the structural center of gravity of the support plate 12, the counterweight structure 14 and the tension pulley 13 which are integrally formed is lower, the support plate 12, the counterweight structure 14 and the tension pulley 13 are integrally formed to more stably press the handrail belt 30, and the shaking of the counterweight structure 14 and the tension pulley 13 is reduced.

In one embodiment, there is a gap 130 between the counterweight structure 14 and the tensioning sheave 13 so that, in use, the handrail belt 30 can pass through the gap 130 between the counterweight structure 14 and the tensioning sheave 13 so that the tensioning sheave 13 can press against the handrail belt 30.

In one embodiment, referring to fig. 3, a counterweight structure 14 is disposed on the upper side of the tension wheel 13. This structure eliminates the need to control the distance between the weight structure 14 and the tension pulley 13, and allows a larger volume of the weight structure 14 to be provided.

It will be appreciated that the upper and lower sides of the tensioner 13 may be provided with counterweight structures 14, respectively, to provide greater weight.

In one embodiment, referring to fig. 4, the side of the support plate 12 facing away from the tension wheel 13 is provided with a counterweight structure 14, that is, the counterweight structure 14 and the tension wheel 13 are respectively located on two opposite sides of the support plate 12, so that the space on the side of the support plate 12 facing away from the tension wheel 13 can be utilized to make the handrail tensioning device 10 smaller in size.

In one embodiment, referring to fig. 5, the support plate 12 may be provided with a counterweight structure 14 on each side, that is, the side of the support plate 12 close to the tension wheel 13 is provided with the counterweight structure 14, and the side of the support plate 12 away from the tension wheel 13 is also provided with the counterweight structure 14, so as to provide a larger weight.

The handrail belt tensioning device 10 of the embodiment of the application can automatically adjust the tension degree of the handrail belt 30 through the weight of the counterweight structure 14, and further when the handrail belt tensioning device is used, the tension degree of the handrail belt 30 is little influenced by seasonal temperature and ambient temperature, the use is convenient, and the cost is low.

Referring to fig. 6 and 7, an escalator 100 is further provided according to an embodiment of the present invention, which includes a truss 20, a handrail 30, and the handrail tensioning device 10 according to any of the above embodiments, wherein the tensioning wheel 13 is pressed against the handrail 30, and the frame 11 is mounted on the truss 20. The escalator 100 uses the handrail tensioning device 10 of the above embodiment, and has the technical effects of the handrail tensioning device 10 of the above embodiment, which will not be described herein again.

In one embodiment, the truss 20 includes a lower horizontal section 21, an inclined section 22, and an upper horizontal section 23, and the lower horizontal section 21, the inclined section 22, and the upper horizontal section 23 are sequentially connected. The frame 11 is mounted to the inclined section 22 adjacent the lower horizontal section 21. Because the handrail 30 is arranged at the position of the inclined section 22 close to the lower horizontal section 21, the downward deformation degree is larger under the action of the self gravity, the frame 11 is arranged at the position of the inclined section 22 close to the lower horizontal section 21, and the tensioning wheel 13 can be pressed at the position of the handrail 30 with larger deformation position, so that the handrail 30 is better pressed, and the tension degree of the handrail 30 is controlled.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A handrail belt tensioning device, comprising:

a frame;

a support plate;

2. The handrail tensioning device of claim 1, wherein: the take-up pulley is a plurality of, and is a plurality of the take-up pulley is the arc setting of arranging.

3. The handrail tensioning device of claim 1, wherein: the counterweight structure is positioned at the lower side of the tensioning wheel, and a gap for the handrail to pass through is formed between the counterweight structure and the tensioning wheel;

4. The handrail tensioning device of claim 1, wherein: the counterweight structure comprises a bracket arranged on the support plate and a counterweight block arranged on the bracket.

5. The handrail tensioning device of claim 4, wherein: the support frame is provided with a support rod, and the counterweight block is provided with a through hole which is matched and sleeved on the support rod.

6. The handrail tensioning device of claim 1, wherein: the counterweight structure is arranged on one side of the support plate, on which the tensioning wheel is arranged; and/or the first and/or second light sources,

one side of the support plate, which deviates from the tensioning wheel, is provided with the counterweight structure.

7. The handrail belt tensioning device of any one of claims 1 to 6, wherein: the guide assembly comprises a plurality of guide shafts arranged in parallel and guide sleeves sleeved on the guide shafts in a sliding mode respectively, the guide shafts are fixedly connected with the rack, and the guide sleeves are fixedly connected with the support plate.

8. The handrail tensioning device of claim 7, wherein: and at least two guide sleeves which are arranged at intervals are sleeved on one guide shaft.

9. The handrail tensioning device of claim 7, wherein: the handrail belt tensioning device further comprises a limiter used for limiting the lifting stroke of the support plate, and the limiter is installed on the guide shaft.

10. The handrail belt tensioning device of any one of claims 1 to 6, wherein: the frame includes two supporting beam and two tie-beams of parallel arrangement, a supporting beam and tie-beam are connected and are formed the rectangular frame structure, the guide assembly with two the tie-beam links to each other.

11. The utility model provides an escalator, includes truss and handrail area, its characterized in that: further comprising a handrail belt tensioning device as defined in any one of claims 1 to 10, said tensioning wheel bearing against said handrail belt, said frame being mounted on said truss.

12. The escalator of claim 11, wherein: the truss comprises a lower horizontal section, an inclined section and an upper horizontal section which are sequentially connected, and the rack is installed at a position, close to the lower horizontal section, of the inclined section.