阅读说明：本技术 梯级链轮、自动扶梯的下部结构及其安装方法 (Lower structure of step chain wheel and escalator and mounting method thereof ) 是由 李文全 何星泉 于 2021-09-28 设计创作，主要内容包括：本发明涉及一种梯级链轮、自动扶梯的下部结构及其安装方法。梯级链轮包括链轮本体,链轮本体的内圈设有凹槽。梯级链轮还包括至少一个支撑组件,至少一个支撑组件用于安装在活动侧板,并对应设于链轮本体的重力方向或梯级链的张紧方向。支撑组件包括可转动设置的支撑滚轮,支撑滚轮设于凹槽内。安装时,将支撑组件固定安装在活动侧板,再将链轮本体放置在支撑滚轮上,使支撑滚轮位于链轮本体内圈的凹槽内,这样只需在活动侧板增加用于安装支撑组件的安装孔便完成梯级链轮的安装,无需改变装配工装,减少装配工装的投入成本。并且,相比常见的梯级链轮,该梯级链轮无中间主轴,结构紧凑,可减轻重量,降低制造成本。(The invention relates to a step chain wheel, a lower structure of an escalator and an installation method thereof. The step chain wheel comprises a chain wheel body, and the inner ring of the chain wheel body is provided with a groove. The step chain wheel also comprises at least one supporting component, and the at least one supporting component is used for being arranged on the movable side plate and correspondingly arranged in the gravity direction of the chain wheel body or the tensioning direction of the step chain. The supporting component comprises a supporting roller which is rotatably arranged, and the supporting roller is arranged in the groove. During installation, the supporting component is fixedly installed on the movable side plate, the chain wheel body is placed on the supporting roller, the supporting roller is located in the groove of the inner ring of the chain wheel body, and therefore installation of the step chain wheel can be completed only by adding the mounting hole for installing the supporting component on the movable side plate, assembly tools do not need to be changed, and the input cost of the assembly tools is reduced. Compared with the common step chain wheel, the step chain wheel has no middle main shaft, compact structure, light weight and low manufacturing cost.)

1. A step sprocket, comprising:

the inner ring of the chain wheel body is provided with a groove;

the supporting assembly is used for being installed on the movable side plate and correspondingly arranged in the gravity direction of the chain wheel body or the tensioning direction of the step chain; the supporting assembly comprises a supporting roller which can be rotatably arranged, the supporting roller is arranged in the groove, and the chain wheel body can rotate along the peripheral surface of the supporting roller.

2. The step sprocket as recited in claim 1, wherein said support assembly further comprises a mounting plate, said support roller being mounted to said mounting plate by a roller shaft, an axis of said roller shaft intersecting a deck of said mounting plate.

3. The step sprocket of claim 1, further comprising at least one tension assembly for mounting to the movable side plate; the tensioning assembly comprises a first elastic piece and a tensioning roller arranged in the groove, and the tensioning roller is pressed on the chain wheel body under the action of the first elastic piece.

4. The step sprocket as recited in claim 3, wherein said tension assembly further comprises a swing arm and a mounting bracket for mounting to said movable side plate, said swing arm being disposed on at least one axial side of said tension roller and being rotatably coupled to said tension roller; one side of the swing arm is rotatably connected with the mounting bracket; the first elastic piece is arranged along the radial extension of the tensioning roller, one end of the first elastic piece is installed on the other side of the swing arm through an installation seat, and the other end of the first elastic piece is connected to the installation support.

5. The step sprocket of claim 4, wherein the tension assembly further comprises an adjustment member disposed on the mounting bracket and coupled to the first resilient member for adjusting an amount of compression of the first resilient member.

6. The step sprocket as recited in claim 4, wherein said mounting seat comprises a seat body connected to said swing arm and a guide post disposed on said seat body, and said first elastic member is sleeved outside said guide post and fixedly connected to said seat body.

7. The step sprocket as recited in claim 4, wherein said mounting bracket is fixed with a limiting member, said swing arm is correspondingly provided with a limiting hole, the aperture of said limiting hole is larger than the size of said limiting member, and said limiting member is inserted into said limiting hole.

8. A substructure for an escalator, comprising:

the lower structure main body comprises a fixed side plate, a guide rail fixed on the fixed side plate and a movable side plate capable of moving relative to the fixed side plate along the step chain transmission direction; and

the step sprocket of any one of claims 1 to 7, mounted to the movable side plate by at least one of the support assemblies.

9. The escalator substructure according to claim 8, wherein said substructure body further comprises a support shaft, both ends of said support shaft being connected to the movable side plates on both sides, respectively;

the lower structure main body further comprises a sliding assembly, the sliding assembly comprises a fixed piece and a sliding piece, and the sliding piece is connected to the fixed piece in a sliding mode and is rotatably connected with the supporting shaft.

10. A method of installing a substructure of an escalator, characterized in that providing a step sprocket according to any of claims 1 to 7 comprises the steps of:

completing the assembly of the lower structure body;

mounting at least one support assembly to the movable side plate;

placing the chain wheel body on a supporting roller of the supporting assembly, and embedding the supporting roller into a groove of an inner ring of the chain wheel body;

and integrally hoisting the lower structure main body and the step chain wheel into the truss.

Technical Field

The invention relates to the technical field of escalators, in particular to a step chain wheel, a lower structure of an escalator and an installation method of the lower structure.

Background

The step chain wheel is mainly used in the main drive of the escalator, and drives the step chain and the steps to run under the action of the main drive chain wheel. A common step sprocket includes a main shaft, and sprockets are respectively mounted at both ends of the main shaft. However, the step chain wheel has the defects of inconvenient maintenance and replacement, high manufacturing cost and the like.

Disclosure of Invention

Accordingly, there is a need for a step sprocket, a lower structure of an escalator, and a method of installing the same, which are compact, easy to replace, and low in manufacturing cost.

A step sprocket, comprising:

the inner ring of the chain wheel body is provided with a groove;

the supporting assembly is used for being installed on the movable side plate and correspondingly arranged in the gravity direction of the chain wheel body or the tensioning direction of the step chain; the supporting assembly comprises a supporting roller which can be rotatably arranged, the supporting roller is arranged in the groove, and the chain wheel body can rotate along the peripheral surface of the supporting roller.

In one embodiment, the support assembly further comprises a mounting plate, the support roller is mounted to the mounting plate by a roller shaft, and the axis of the roller shaft intersects the deck of the mounting plate.

In one embodiment, the step sprocket further comprises at least one tension assembly for mounting to the movable side plate; the tensioning assembly comprises a first elastic piece and a tensioning roller arranged in the groove, and the tensioning roller is pressed on the chain wheel body under the action of the first elastic piece.

In one embodiment, the tensioning assembly further comprises a swing arm and a mounting bracket for mounting on the movable side plate, wherein the swing arm is arranged on at least one side of the tensioning roller along the axial direction and is rotatably connected with the tensioning roller; one side of the swing arm is rotatably connected with the mounting bracket; the first elastic piece is arranged along the radial extension of the tensioning roller, one end of the first elastic piece is installed on the other side of the swing arm through an installation seat, and the other end of the first elastic piece is connected to the installation support.

In one embodiment, the tensioning assembly further comprises an adjusting member, and the adjusting member is disposed on the mounting bracket, connected to the first elastic member, and used for adjusting the compression amount of the first elastic member.

In one embodiment, the mounting seat includes a seat body connected to the swing arm and a guide post disposed on the seat body, and the first elastic member is sleeved outside the guide post and is fixedly connected to the seat body.

In one embodiment, a limiting piece is fixed on the mounting bracket, a limiting hole is correspondingly formed in the swing arm, the aperture of the limiting hole is larger than the size of the limiting piece, and the limiting piece is arranged in the limiting hole in a penetrating mode.

A substructure for an escalator, comprising:

the lower structure main body comprises a fixed side plate, a guide rail fixed on the fixed side plate and a movable side plate capable of moving relative to the fixed side plate along the step chain transmission direction; and

the step chain wheel is arranged on the movable side plate through at least one support assembly.

In one embodiment, the lower structure main body further comprises a support shaft, and two ends of the support shaft are respectively connected with the movable side plates on two sides; the lower structure main body further comprises a sliding assembly, the sliding assembly comprises a fixed piece and a sliding piece, and the sliding piece is connected to the fixed piece in a sliding mode and is rotatably connected with the supporting shaft.

A method of installing a substructure of an escalator comprising the steps of:

completing the assembly of the lower structure body;

mounting at least one support assembly to the movable side plate;

placing the chain wheel body on a supporting roller of the supporting assembly, and embedding the supporting roller into a groove of an inner ring of the chain wheel body;

and integrally hoisting the lower structure main body and the step chain wheel into the truss.

According to the lower part structure of the step chain wheel and the escalator and the installation method thereof, during installation, the supporting component is fixedly installed on the movable side plate, then the chain wheel body is placed on the supporting roller wheel, the supporting roller wheel is positioned in the groove of the inner ring of the chain wheel body, and therefore installation of the step chain wheel can be completed only by adding the installation hole for installing the supporting component on the movable side plate, the assembly tool does not need to be changed, and the input cost of the assembly tool is reduced. Compared with the common step chain wheel, the step chain wheel has no middle main shaft, compact structure, light weight and low manufacturing cost. In addition, the step chain is engaged with the step chain wheel, the step chain wheel can limit the swing of the step chain, further reduce the swing amount of the step, effectively prevent the step from colliding with the skirt board when entering the skirt board area, avoid the noise, and simultaneously improve the comfort level of passengers for taking the step.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

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

Fig. 1 is a schematic structural view of an escalator substructure according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a step sprocket according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of the support assembly of the step sprocket shown in FIG. 2;

FIG. 4 is a cross-sectional view taken along A-A of FIG. 3;

FIG. 5 is a schematic structural view of a tension assembly of the step sprocket shown in FIG. 2;

FIG. 6 is a schematic structural view of the sprocket body of the step sprocket shown in FIG. 2.

The reference numbers illustrate: 10. a step sprocket; 11. a sprocket body; 111. an inner ring; 112. a groove; 113. hoisting holes; 12. a support assembly; 121. supporting the rollers; 122. mounting a plate; 123. a roller shaft; 124. a first locknut; 13. a tension assembly; 131. tensioning the roller; 132. a first elastic member; 133. mounting a bracket; 1331. a second locknut; 134. swinging arms; 1341. a limiting hole; 135. a mounting seat; 1351. a base body; 1352. a guide post; 136. an adjustment member; 1361. a stud; 1362. a support table; 1363. adjusting the nut; 137. a limiting member; 20. a movable side plate; 30. fixing the side plate; 40. and supporting the shaft.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Referring to fig. 1 and 2, a step sprocket 10 according to an embodiment of the present invention includes a sprocket body 11, and an inner ring 111 of the sprocket body 11 is provided with a groove 112. The step chain wheel 10 further comprises at least one support assembly 12, wherein the at least one support assembly 12 is used for being mounted on the movable side plate 20 and corresponds to the gravity direction of the chain wheel body 11 or the tensioning direction of the step chain. The supporting assembly 12 includes a supporting roller 121 rotatably disposed, the supporting roller 121 is disposed in the groove 112, and the sprocket body 11 can rotate along the outer peripheral surface of the supporting roller 121.

During installation, the support component 12 is fixedly installed on the movable side plate 20, the chain wheel body 11 is placed on the support roller 121, the support roller 121 is located in the groove of the inner ring of the chain wheel body 11, and therefore installation of the step chain wheel 10 can be completed only by adding the installation hole for installing the support component 12 on the movable side plate 20, an assembly tool does not need to be changed, and the input cost of the assembly tool is reduced. Compared with the common step chain wheel, the step chain wheel has no middle main shaft, compact structure, light weight and low manufacturing cost. Further, the step chain is engaged with the step sprocket 10, and the step sprocket 10 can restrict the swing of the step chain, thereby reducing the swing amount of the step, effectively preventing the step from colliding with the skirt board when entering the skirt board area, avoiding the generation of noise, and improving the comfort of passengers riding the ladder.

Further, referring to fig. 3 and 4, the support assembly 12 further includes a mounting plate 122, the support roller 121 is mounted on the mounting plate 122 through a roller shaft 123, and an axis of the roller shaft 123 intersects a plate surface of the mounting plate 122. Optionally, the axis of the roller shaft 123 is perpendicular to the deck of the mounting plate 122. During installation, the plate surface of the mounting plate 122 is attached to the plate surface of the movable side plate 20, the mounting plate 122 is fixed on the movable side plate 20 by mounting members such as bolts, and finally the sprocket body 11 is placed on the supporting rollers 121, so that the supporting rollers 121 are arranged in the grooves 112. Thus, the installation of the supporting roller 121 is facilitated by the installation plate 122; moreover, since the axis of the roller shaft 123 intersects with the plate surface of the mounting plate 122, the axial direction of the supporting roller 121 is substantially the same as the axial direction of the sprocket body 11, which is beneficial to quickly embedding the supporting roller 121 into the groove 112 of the sprocket body 11 and ensures the stability of the supporting roller 121 for supporting the sprocket body 11.

Further, referring to fig. 3, the mounting plate 122 is provided with a first locknut 124. Optionally, a first locknut 124 is butt-welded to the mounting plate 122. Thus, the mounting plate 122 can be firmly and reliably mounted on the movable side plate 20, and the mounting plate 122 is effectively prevented from loosening.

It should be noted that, referring to fig. 3, the number of the first locknuts 124 may be set according to actual requirements, and is not limited in detail herein. In the present embodiment, two first locknuts 124 are provided, and the two first locknuts 124 are welded to the mounting plate 122 at intervals.

In one embodiment, referring to fig. 2 and 5, the step sprocket 10 further comprises at least one tension assembly 13 for mounting to the movable side plate 20. Specifically, at least one tension assembly 13 is disposed in the unstressed direction of the sprocket body 11. The tension assembly 13 includes a first elastic member 132 and a tension roller 131 disposed in the groove 112, and the tension roller 131 is pressed against the sprocket body 11 by the first elastic member 132. During the operation of the escalator, the sprocket body 11 is rotated along the outer circumferential surface of the tension roller 131 by the driving of the step chain. In this way, by providing the tension assembly 13, the tension roller 131 of the tension assembly 13 is pressed on the sprocket body 11 by the first elastic member 132, so that the influence of the machining precision error of the groove 112 of the sprocket body 11 on the service life of the support roller 121 can be eliminated, and the step sprocket 10 can be prevented from wobbling when in operation.

In the present embodiment, referring to fig. 2, three support assemblies 12 and three tension assemblies 13 are provided, and the three support assemblies 12 and the three tension assemblies 13 are respectively arranged at equal intervals along the circumferential direction of the sprocket body 11. Specifically, one of the support assemblies 12 is provided at an upper portion of the sprocket body 11 in the direction of gravity, and one of the tension assemblies 13 is provided at a lower portion of the sprocket body 11 in the direction of gravity. The other two support assemblies 12 are arranged on the force-bearing side of the chain wheel body 11 and are arranged between the support assemblies 12 and the pressing assemblies along the gravity direction of the chain wheel body 11 at equal intervals along the circumferential direction of the chain wheel body 11; the other two tensioning assemblies 13 are arranged on the non-stressed side of the chain wheel body 11 and are arranged between the supporting assembly 12 and the pressing assembly along the gravity direction of the chain wheel body 11 at equal intervals along the circumferential direction of the chain wheel body 11.

Further, referring to fig. 5, the tension assembly 13 further includes a swing arm 134 and a mounting bracket 133 for mounting to the movable side plate 20. The swing arm 134 is disposed on at least one side of the tension roller 131 in the axial direction and is rotatably connected to the tension roller 131, and one side of the swing arm 134 is rotatably connected to the mounting bracket 133. The first elastic member 132 is disposed to extend in a radial direction of the tension roller 131, and one end of the first elastic member 132 is mounted to the other side of the swing arm 134 through a mounting seat 135 and the other end is connected to the mounting bracket 133. During installation, the installation bracket 133 is attached to the plate surface of the movable side plate 20, the installation bracket 133 is fixed on the movable side plate 20 by the installation part, finally, the sprocket body 11 is placed on the tensioning roller 131, and the tensioning roller 131 is pressed on the sprocket body 11 under the action of the first elastic part 132. When the escalator operates, under the driving of the step chain, the chain wheel body 11 rotates along the supporting roller 121 and the tensioning roller 131, and under the matching of the swing arm 134 and the first elastic piece 132, the tensioning roller 131 is pressed on the chain wheel body 11, so that the influence of the processing precision error of the groove 112 of the chain wheel body 11 on the service life of the supporting roller 121 is eliminated, and meanwhile, the step chain wheel 10 can be prevented from swinging during operation.

In the present embodiment, referring to fig. 5, two swing arms 134 are provided, and the two swing arms 134 are respectively disposed on two sides of the tensioning roller 131 along the axial direction and are rotatably connected to the tensioning roller 131. The mounting bracket 133 is disposed at one side of one of the swing arms 134 and is rotatably connected to both of the swing arms 134. The mounting seat 135 is disposed between the two swing arms 134, the first elastic member 132 is disposed along a radial direction of the tension roller 131, and one end of the first elastic member 132 is connected to the mounting seat 135 and the other end is connected to the mounting bracket 133.

Still further, referring to fig. 2 and 5, the tension assembly 13 further includes an adjustment member 136. The adjusting member 136 is disposed on the mounting bracket 133 and connected to the first elastic member 132 for adjusting the compression amount of the first elastic member 132. Thus, by providing the adjusting member 136, the adjusting member 136 can adjust the compression amount of the first elastic member 132, adjust the pressing force of the tension roller 131 on the sprocket body 11, and effectively prevent the step sprocket 10 from wobbling during operation.

It should be noted that the adjusting member 136 faces the mounting hole of the supporting shaft 40 of the movable side plate 20, so as to facilitate the adjustment of the adjusting member 136.

Alternatively, referring to fig. 5, the adjustment member 136 includes a stud 1361 and an adjustment nut 1363 mated with the stud 1361. One end of the stud 1361 is provided with a support platform 1362, and the first elastic member 132 is fixedly connected to the support platform 1362. The mounting bracket 133 is provided with a mounting hole adapted to the stud 1361, and the stud 1361 is inserted into the mounting hole and fixed to the mounting bracket 133 by the adjusting nut 1363. By rotating the adjusting nut 1363, the height position of the adjusting nut 1363 on the stud 1361 can be adjusted, and the compression amount of the first elastic member 132 can be adjusted, so that the pressing force of the tension roller 131 on the sprocket body 11 can be adjusted, and the step sprocket 10 can be prevented from shaking during operation.

Of course, in other embodiments, the adjusting member 136 may be a telescopic member fixed to the mounting bracket 133, and the first elastic member 132 is connected to the telescopic member.

Further, referring to fig. 5, the mounting base 135 includes a base body 1351 connected to the swing arm 134 and a guide post 1352 disposed on the base body 1351. The first elastic member 132 is sleeved outside the guiding post 1352 and is fixedly connected to the seat body 1351. Specifically, the seat body 1351 is provided with a through hole, and a pin shaft is inserted into the through hole and connected with the swing arm 134 through the pin shaft. Thus, by arranging the seat body 1351, the first elastic element 132 is conveniently mounted on the swing arm 134; in addition, the guide post 1352 is arranged at the bottom of the base, and the first elastic member 132 is sleeved outside the guide post 1352, so that the guide post 1352 can play a role in guiding, the telescopic motion of the first elastic member 132 has guidance, and the motion stability of the first elastic member 132 is ensured.

Further, referring to fig. 5, the mounting bracket 133 is fixed with a limiting member 137, the swing arm 134 is correspondingly provided with a limiting hole 1341, the aperture of the limiting hole 1341 is larger than the size of the limiting member 137, and the limiting member 137 is inserted into the limiting hole 1341. Optionally, the limiting member 137 is a limiting bolt fixed on the mounting bracket 133. Thus, by providing the limiting member 137, the limiting member 137 is fixed to the mounting bracket 133 and extends into the limiting hole 1341, so that in the swinging process of the swing arm 134, the limiting member 137 can limit the swing angle of the swing arm 134, and the first elastic member 132 is prevented from falling off in the transportation process.

Further, referring to fig. 5, the mounting bracket 133 is provided with a second locknut 1331. Optionally, a second locknut 1331 is butt welded to the mounting bracket 133. Thus, the mounting bracket 133 can be securely and reliably mounted to the movable side plate 20, and the mounting bracket 133 can be prevented from loosening.

It should be noted that the number of the second locknuts 1331 may be set according to actual requirements, and is not specifically limited herein. Specifically, in the present embodiment, two second locknuts 1331 are provided, and the two second locknuts 1331 are butt-welded to the mounting bracket 133 at intervals.

In one embodiment, the edges of the groove 112 of the sprocket body 11 are rounded. Thus, the support roller 121 and the tension roller 131 can be effectively prevented from being damaged when being meshed with the sprocket body 11, and the service lives of the support roller 121 and the tension roller 131 are effectively prolonged.

In addition, referring to fig. 6, the sprocket body 11 is provided at the side thereof with a lifting hole 113, which facilitates lifting to improve mounting efficiency. Further, the side of the sprocket body 11 is provided with a fabrication hole, which facilitates the processing.

In one embodiment, the hubs of the support roller 121 and the tension roller 131 are made of metal, which is strong. Moreover, the rims of the supporting roller 121 and the tension roller 131 are made of polyurethane, so that the supporting roller 121 and the tension roller 131 are respectively engaged with the sprocket body 11 with less noise during the step chain driving process.

Referring to fig. 1, the lower structure of the escalator according to one embodiment of the present invention includes a lower structure body and a step sprocket 10 according to any of the above embodiments. The lower structural body includes a fixed side plate 30, a guide rail fixed to the fixed side plate 30, and a movable side plate 20 movable in a step chain driving direction with respect to the fixed side plate 30, and the step sprocket 10 is mounted to the movable side plate 20 through at least one support assembly 12.

In the lower structure of the escalator, the supporting component 12 is fixedly arranged on the movable side plate 20 during installation, and then the chain wheel body 11 is placed on the supporting roller 121, so that the supporting roller 121 is positioned in the groove of the inner ring of the chain wheel body 11, and thus, the step chain wheel 10 can be installed only by adding the mounting hole for mounting the supporting component 12 on the movable side plate 20, the assembly tool does not need to be changed, and the input cost of the assembly tool is reduced. Compared with the common step chain wheel, the step chain wheel has no middle main shaft, compact structure, light weight and low manufacturing cost. Further, the step chain is engaged with the step sprocket 10, and the step sprocket 10 can restrict the swing of the step chain, thereby reducing the swing amount of the step, effectively preventing the step from colliding with the skirt board when entering the skirt board area, avoiding the generation of noise, and improving the comfort of passengers riding the ladder.

In one embodiment, referring to fig. 1, the lower structural body further includes a support shaft 40, and both ends of the support shaft 40 are respectively connected to the movable side plates 20 at both sides. Specifically, the movable side plate 20 is provided with a mounting hole adapted to the support shaft 40, the support shaft 40 is inserted into the mounting hole, and the support shaft 40 is mounted on the movable side plate 20 through a fastener.

In the embodiment, two support shafts 40 are provided, the two support shafts 40 penetrate through the inner ring 111 hole of the sprocket body 11, and two ends of the two support shafts 40 are respectively connected with the movable side plates 20 on two sides.

Further, the substructure body also includes a slide assembly. The sliding assembly includes a fixed member and a sliding member slidably connected to the fixed member and rotatably connected to the support shaft 40. In this way, since the sliding member is slidably connected to the fixed member, the sliding member can reciprocate along the fixed member to drive the support shaft 40 and the step sprocket 10 connected thereto to reciprocate, thereby tensioning the step chain or the tread chain.

Specifically, the slider includes a link connected with the support shaft 40, a second elastic member, a fastener, and a connecting plate. An external thread is arranged at one end of the connecting rod, and the end, provided with the external thread, of the connecting rod penetrates through the second elastic piece. The fastener is provided with an internal thread matched with the external thread of the connecting rod, and the fastener is in threaded connection with one end of the connecting rod and abuts against one end of the second elastic piece. The connecting plate is abutted against the other end of the second elastic piece and is fixedly connected with the fixing piece. Specifically, one end of the second elastic piece abuts against the connecting plate, and the other end of the second elastic piece is in contact with the fastener. The elastic force received by the fastener is transmitted to the connecting rod, and the elastic force is transmitted to the supporting shaft 40 through the connecting rod, so that the supporting shaft 40 obtains the elastic force, and the step chain is tensioned. Further, by rotating the fastening member, the compression amount of the second elastic member can be adjusted, thereby achieving adjustment of the tension of the support shaft 40. In particular, the fixing member is a guide rail.

The method of installing the substructure of the escalator in accordance with one embodiment of the present invention provides the step sprocket 10 of any of the above embodiments. The method for installing the substructure of an escalator comprises the following steps:

s10, completing the assembly of the lower structure main body;

s20, mounting at least one support component 12 on the movable side plate 20;

s30, placing the sprocket body 11 on the supporting roller 121 of the supporting component 12, and embedding the supporting roller 121 into the groove 112 of the inner ring 111 of the sprocket body 11;

s40, integrally hoisting the lower structure body and the step chain wheel 10 into the truss.

Therefore, the assembly of the lower structure main bodies such as the fixed side plate 30 and the movable side plate 20 is firstly completed by the assembly tool, the step chain wheel 10 is installed on the movable side plate 20 by the supporting component 12, and finally the lower structure main body and the step chain wheel 10 are integrally hoisted into the truss by the integral hoisting method, so that the step chain wheel 10 and the truss do not need to be separately positioned and assembled, and the installation process is simple and convenient.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the 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 are not to be considered limiting of the invention.

Furthermore, 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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

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 intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.