Additional brake, escalator and moving sidewalk

Abstract

The invention provides an additional brake, an escalator and a moving walk. The additional brake comprises a wheel core which is arranged on a main driving shaft of the escalator or the moving sidewalk in a relative rotation prevention manner; a platen coaxially attached to the wheel core via a bolt; the ratchet wheel is clamped between the wheel core and the pressure plate; the belleville spring is installed between the end face of the side, away from the ratchet wheel, of the pressing disc and the bolt in a compressed state. The pawl is arranged in a mode of being capable of being clamped into or separated from the tooth groove of the ratchet wheel; a mounting hole, through which a bolt passes, in the pressure plate forms an arc-shaped long hole extending in the circumferential direction around the main drive shaft, an inclined surface gradually rising from one side to the other side in the circumferential direction is formed around the long hole on the end surface of the pressure plate, and the belleville spring is mounted on the inclined surface in a manner of being capable of sliding in the circumferential direction. The amount of compression is gradually increased by sliding from one side to the other side in the circumferential direction, thereby gradually increasing the braking force to the main drive shaft.

Description

Technical Field

[0001] This invention relates to an auxiliary brake for escalators or moving walkways, and also to escalators and moving walkways using the auxiliary brake. Background Technology

[0002] To improve passenger safety, additional brakes are required for standard escalators and moving walkways with a lifting height exceeding 6 meters. However, for bus-type escalators and moving walkways, which have no lifting height limit, additional brakes are required for all of them.

[0003] A commonly used auxiliary braking structure is the ratchet and pawl type. As a typical structure, it features a ratchet and a pawl. The ratchet is mounted on the main drive shaft of the steps or treads in the escalator or moving walkway. The pawl is hinged to a truss and connected to an electromagnet via a linkage, allowing it to rotate under the electromagnet's drive to engage or disengage from the ratchet's teeth. During normal operation of the escalator or moving walkway, the pawl disengages from the ratchet's teeth, applying no braking force. In the event of overspeeding, reverse rotation, or main drive chain breakage, the pawl, driven by the electromagnet, engages with the ratchet's teeth, stopping the ratchet's rotation. This, in turn, stops the main drive shaft on which the ratchet is mounted, thus slowing the escalator or moving walkway to a stop and bringing it to a stationary state.

[0004] According to GB16899, the deceleration during braking with the auxiliary brake should not exceed 1 m / s². 2 However, this requirement applies under full load conditions. In other words, if the additional brakes are engaged under non-full load conditions, the braking deceleration is likely to exceed 1 m / s². 2 The risk of passengers falling is very high.

[0005] Taking the aforementioned ratchet and pawl-type auxiliary brake as an example, under non-full-load conditions, at the moment the pawl engages with the rotating ratchet, the impact force is relatively large, which can easily cause the maximum deceleration to exceed 1 m / s². 2 When this happens, passengers are at risk of falling.

[0006] In this respect, there is still much room for improvement in the existing auxiliary brakes. Summary of the Invention

[0007] In view of the above, the object of the present invention is to provide an additional brake for escalators or moving walkways that can both ensure braking performance and reduce the impact force at the moment of braking, as well as escalators and moving walkways using the additional brake.

[0008] To achieve the above objectives, the present invention provides an auxiliary brake for use in escalators or moving walkways to brake the escalator or moving walkway, comprising: a wheel core disposed in a non-rotatable manner on the main drive shaft of the drive step chain or pedal chain of the escalator or moving walkway; a pressure plate coaxially mounted to the wheel core via bolts; a ratchet clamped between the wheel core and the pressure plate; and an elastic force-applying member installed in a compressed state between the end face of the pressure plate on the side opposite to the ratchet and the bolts. The device includes a pawl that is configured to engage or disengage from the teeth of the ratchet; a mounting hole on the pressure plate through which the bolt passes is formed as an elongated arc-shaped hole extending in the circumferential direction around the main drive shaft; on the end face of the pressure plate, at least around the elongated hole, a slope that gradually rises from one side to the other in the circumferential direction is formed along the elongated hole; the elastic force-applying member is mounted in a manner that allows it to slide along the slope in the circumferential direction, thereby gradually increasing the amount of compression as it slides from one side to the other in the circumferential direction, thereby gradually increasing the braking force on the main drive shaft.

[0009] According to the technical solution, during the braking process, as the elastic force-applying component slides from one side of the circumference to the other on the inclined surface of the pressure plate, the elastic force-applying component is gradually compressed, causing the friction between the wheel core and the ratchet and the friction between the ratchet and the pressure plate to gradually increase from small to large, thereby gradually increasing the braking force of the auxiliary brake on the main drive shaft.

[0010] Because the elastic force-applying component at the initial position is set at a relatively high height and has a relatively low braking force, the impact force is small at the moment the pawl engages with the ratchet, and the risk of passengers falling is low.

[0011] As the elastic force-applying component slides on the inclined surface of the pressure plate, it is gradually compressed, and the braking force of the auxiliary brake gradually increases. The braking force reaches its maximum when the bolt rotates to engage with the end of the elongated hole on the other side of the circumference. This allows the escalator or moving walkway to decelerate and stop quickly, ensuring the braking performance of the auxiliary brake.

[0012] Therefore, this additional brake can both ensure braking performance and reduce the impact force during braking, that is, it can achieve the above-mentioned invention objectives.

[0013] In addition, to achieve the above objectives, the present invention also provides another auxiliary brake used in escalators or moving walkways for braking the escalator or moving walkway, comprising: a wheel core disposed in a non-rotatable manner on the main drive shaft of the escalator or moving walkway's drive step chain or pedal chain; a pressure plate coaxially mounted to the wheel core via bolts; a ratchet clamped between the wheel core and the pressure plate; and an elastic force-applying member mounted in a compressed state. Between the end face of the pressure plate opposite to the ratchet and the bolt; and a pawl, which is configured to engage or disengage from the teeth of the ratchet; the mounting hole on the pressure plate through which the bolt passes is formed as an elongated arc-shaped hole extending in the circumferential direction around the main drive shaft, the bolt being configured to slide relative to the pressure plate along the elongated hole, thereby increasing the braking force on the main drive shaft by abutting against the end of the elongated hole on the other side of the circumferential direction during sliding from one side of the circumferential direction to the other side.

[0014] According to this technical solution, in the initial stage of braking, the pressure plate can be kept from rotating with the main drive shaft. Therefore, the braking force is the resultant force of the frictional force applied by the ratchet on one side and the frictional force between the pressure plate and the elastic force-applying component, which is relatively small. As a result, the impact force at the moment of braking is small, and the risk of passengers falling is low.

[0015] On the other hand, in the later stage of braking, the bolt abuts against the end of the other side of the elongated hole in the circumferential direction, causing the pressure plate to rotate with the main drive shaft. Therefore, the braking force becomes the frictional force applied on both sides of the ratchet, which is relatively large, thus ensuring the braking performance of the auxiliary brake.

[0016] The present invention also provides an escalator comprising: a step chain having a plurality of steps mounted thereon; a main drive shaft for driving the step chain to move cyclically; and the aforementioned additional brake for applying braking force to the main drive shaft to brake the escalator.

[0017] The present invention also provides an automated walkway comprising: a pedal chain on which a plurality of pedals are mounted; a main drive shaft that drives the pedal chain to move cyclically; and the aforementioned additional brake for applying braking force to the main drive shaft to brake the automated walkway.

[0018] These escalators and moving walkways have the beneficial effects of the aforementioned additional brakes, namely, they can both ensure braking performance and reduce the impact force at the moment of braking. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an escalator with an additional brake applied according to implementation method 1.

[0020] Figure 2 This is a perspective view showing the overall structure of the additional brake in Embodiment 1.

[0021] Figure 3 This is an exploded perspective view showing the structure of the ratchet portion of the additional brake in Embodiment 1.

[0022] Figure 4 This is a front view showing the overall structure of the additional brake in Embodiment 1.

[0023] Figure 5 This is an enlarged cross-sectional view showing the structure of the ratchet portion of the additional brake in Embodiment 1. Figure 4 The diagram shows the additional brake being cut along line AA.

[0024] Figure 6 This is a front view showing the structure of the pressure plate of the additional brake in Embodiment 1.

[0025] Figure 7 This is an enlarged cross-sectional view showing the structure of the pressure plate of the auxiliary brake in Embodiment 1. Figure 6 The diagram shows the pressure plate being cut at the BB line.

[0026] Figure 8 This is a diagram showing the state of the additional brake in the initial braking stage of Embodiment 1.

[0027] Figure 9 This is a diagram showing the state of the additional brake in the later stage of braking according to Embodiment 1.

[0028] Figure 10 This is a front view showing the structure of the pressure plate of the additional brake in Embodiment 2.

[0029] Figure 11 This is an enlarged cross-sectional view showing the structure of the pressure plate of the auxiliary brake in Embodiment 2. Figure 10 The diagram shows the pressure plate being cut at the CC line.

[0030] Figure 12 This is a front view showing the structure of the pressure plate of the additional brake in Embodiment 3.

[0031] Figure 13 This is an enlarged cross-sectional view showing the structure of the pressure plate of the auxiliary brake in Embodiment 3. Figure 12 The diagram shows the pressure plate being cut at the DD line.

[0032] Figure 14 This is a diagram showing the state of the additional brake in the initial braking stage of embodiment 4.

[0033] Figure 15This is a diagram showing the state of the additional brake in the later stage of braking according to embodiment 4. Detailed Implementation

[0034] The embodiments of the present invention will be described below. Note that the following embodiments are provided for the purpose of understanding the present invention and are not intended to limit the present invention.

[0035] In addition, in the following description, the same reference numerals will be used for the same constituent elements, and the description of the constituent elements will be simplified or omitted as appropriate.

[0036] <1> Implementation Method 1

[0037] [1-1] Overview of Escalators

[0038] The auxiliary brake in Embodiment 1 is a device used in escalators or moving walkways to brake them. To easily understand the function of the auxiliary brake, an escalator using the auxiliary brake will be described first.

[0039] Figure 1 This is a schematic diagram of an escalator with an additional brake applied according to implementation method 1.

[0040] like Figure 1 As shown, as a typical structure, an escalator has a truss 1 erected between upper and lower floors. At the upper end of the truss 1, a pair of step sprockets 2 are installed via a main drive shaft Ms. At the lower end of the truss 1, a pair of driven step sprockets 3 are installed via a driven shaft Ns. Two parallel step chains 4 are mounted on the pair of step sprockets 2 and the pair of driven step sprockets 3. Multiple steps 5 are installed continuously between these two step chains 4.

[0041] Furthermore, at the upper end of the truss 1, a drive sprocket 6 is installed on the main drive shaft Ms, and a drive device consisting of a motor 7 is provided near the drive sprocket 6. A drive chain 8 is wound on the output shaft of the drive sprocket 6 and the motor 7.

[0042] When the escalator is in operation, the driving force from the motor 7 is transmitted to the drive sprocket 6 via the drive chain 8, thereby driving the sprocket 6 to rotate, which in turn causes the step sprocket 2, which is coaxially mounted with the drive sprocket 6, to rotate. As a result, the two step chains 4, mounted on the step sprocket 2 and the driven step sprocket 3, move cyclically, causing the multiple consecutively arranged steps 5 to move cyclically. This allows passengers riding on the steps 5 to be transported between floors in a building.

[0043] Additionally, an auxiliary brake 9 is provided at the end of the upper layer of truss 1, which has a ratchet 92 mounted on the main drive shaft Ms. Figure 2 ) and pawl 98 supported on truss 1 Figure 2 The pawl 98 can engage or disengage from the tooth groove of the ratchet 92.

[0044] When the escalator brakes due to an abnormality, the pawl 98 moves from the position away from the tooth groove of the ratchet 92 to the position of engaging the tooth groove of the ratchet 92, and applies braking force to the drive sprocket 6 via the ratchet 92, thereby stopping the escalator and keeping it stationary.

[0045] After troubleshooting, move the pawl 98 from the position where it is engaged in the tooth groove of the ratchet 92 to the position where it is disengaged from the tooth groove of the ratchet 92, thereby releasing the brake on the escalator.

[0046] [1-2] Structure of the auxiliary brake

[0047] The specific structure of the additional brake 9 in Embodiment 1 will be described below.

[0048] Figure 2 This is a perspective view showing the structure of the additional brake 9 in embodiment 1. Figure 3 This is an exploded perspective view of the ratchet portion of the additional brake 9 in Embodiment 1. Figure 4 This is a front view showing the overall structure of the additional brake 9 in Embodiment 1. Figure 5 This diagram shows the ratchet portion of the additional brake 9 in Embodiment 1. Figure 4 Enlarged AA sectional view.

[0049] like Figures 2 to 5 As shown, the additional brake 9 includes a ratchet portion and a pawl portion.

[0050] In the ratchet section, the auxiliary brake 9 has a wheel core 91, a ratchet 92, a pressure plate 93, multiple friction plates 94, multiple bolts 95, multiple washers 96, and multiple sets of disc springs 97.

[0051] The wheel core 91 is an annular component, mounted on the main drive shaft Ms of the escalator in a manner that prevents relative rotation, but it can rotate together with the main drive shaft Ms. The wheel core 91 has a large-diameter ring portion 911 and a small-diameter ring portion 912. In addition, a plurality of threaded holes 913 are formed on the end face of the small-diameter ring portion 912 opposite to the large-diameter ring portion 911, and the plurality of threaded holes 913 are arranged at equal intervals in the circumferential direction of the wheel core 91.

[0052] The ratchet 92 has a structure in which multiple teeth 922 are formed circumferentially distributed on a ring-shaped ratchet body 921. The inner diameter of the ratchet body 921 is slightly larger than the outer diameter of the small-diameter ring portion 912 of the wheel core 91. The ratchet body 921 is fitted around the small-diameter ring portion 912 in a coaxial manner with the small-diameter ring portion 912, and can rotate relative to the small-diameter ring portion 912, and further relative to the wheel core 91.

[0053] Furthermore, a circular friction plate 94 is clamped between the opposing end faces of the ratchet body 921 of the ratchet 92 and the large-diameter ring portion 911 of the wheel core 91. The ratchet body 921 of the ratchet 92 and the large-diameter ring portion 911 of the wheel core 91 are clamped together by the disc spring 97 (described later), generating friction between the ratchet 92 and the wheel core 91 through the friction plate 94.

[0054] Figure 6 This is the main view of the pressure plate 93. Figure 7 This is a BB-enlarged sectional view of the pressure plate 93.

[0055] like Figure 6 As shown, the pressure plate 93 has a circular pressure plate body 931.

[0056] Multiple mounting holes 932 are formed on the pressure plate body 931. Each of the multiple mounting holes 932 is formed as an arc-shaped elongated hole extending in the circumferential direction around the main drive shaft Ms of the escalator. In addition, the multiple mounting holes 932 are distributed at equal intervals along the circumference of the pressure plate 93.

[0057] like Figure 7 As shown, on the end face of the pressure plate body 931 opposite to the ratchet 92, i.e., on the end face of the pressure plate 93 away from the ratchet 92, bevels 933 are formed around each of the plurality of mounting holes 932. Each bevel 933 extends along the extension direction of the corresponding mounting hole 932, forming an arc shape extending in the circumferential direction around the main drive shaft Ms.

[0058] In this embodiment, each inclined surface 933 is formed by a groove recessed from the end face of the pressure plate 93 on the side opposite to the ratchet 92. Specifically, as Figure 7 As shown, each inclined surface 933 is the bottom surface of a groove recessed from the end face of the pressure plate 93 on the side opposite to the ratchet 92.

[0059] Furthermore, each inclined plane 933 gradually increases in height as it extends from one side of the circle to the other. Specifically, as... Figure 7As shown, the height of each inclined surface 933 is lowest at one end of the corresponding mounting hole 932 in the circumferential direction, gradually increases as it extends to the other side in the circumferential direction, and reaches its highest near the end of the corresponding mounting hole 932 in the circumferential direction, smoothly connecting with the flat end face near this end of the pressure plate 93.

[0060] A pressure plate 93 is positioned on the side of the ratchet 92 opposite to the wheel core 91, pushing the ratchet 92 towards the wheel core 91. Specifically, the pressure plate 93 and the wheel core 91 are coaxially positioned on the side of the ratchet 92 opposite to the wheel core 91. Multiple bolts 95 pass through corresponding mounting holes 932 on the pressure plate 93 and are screwed into corresponding threaded holes 913 on the wheel core 91, thereby mounting the pressure plate 93 onto the wheel core 91. Washers 96 are fitted onto each of the bolts 95. A set of disc springs 97 is clamped between the opposing end faces of the washers 96 and the pressure plate 93, and is installed in a compressed state between the washers 96 and the pressure plate 93. Thus, through the force generated by the compressed disc springs 97, the pressure plate 93 pushes the ratchet 92 towards the wheel core 91.

[0061] In addition, a circular friction plate 94 is also clamped between the opposing end faces of the pressure plate body 931 of the pressure plate 93 and the ratchet body 921 of the ratchet 92. The pressure plate body 931 of the pressure plate 93 and the ratchet body 921 of the ratchet 92 clamp the friction plate 94 under the force of the disc spring 97, and the friction plate 94 generates friction between the pressure plate 93 and the ratchet 92.

[0062] Disc springs 97 are grouped in multiples (e.g., four as shown in the figure) to form an elastic force-applying component. As mentioned above, each group of disc springs 97 is installed in a compressed state between the end face of the pressure plate 93 on the side opposite to the ratchet 92 and the bolt 95 via a corresponding bolt 95 and washer 96, generating a force that presses the wheel core 91, the friction plate 94 sandwiched between the wheel core 91 and the ratchet 92, the ratchet 92, the friction plate 94 sandwiched between the ratchet 92 and the pressure plate 93, and the pressure plate 93 together.

[0063] Each set of disc springs 97 is installed in a manner that allows it to slide along the extension direction of the corresponding inclined surface 933 on the pressure plate 93, that is, along the circumferential direction surrounding the main drive shaft Ms. In other words, each set of disc springs 97 can slide from one side to the other in this circumferential direction, or conversely, from the other side to one side in this circumferential direction. Thus, when the auxiliary brake 9 applies braking, by sliding the disc springs 97 from one side to the other in the aforementioned circumferential direction, the compression of the disc springs 97 can be gradually increased, thereby gradually increasing the braking force applied to the main drive shaft Ms of the escalator. On the other hand, after troubleshooting, by sliding the disc springs 97 from the other side to one side in the aforementioned circumferential direction, the disc springs 97 can be reset.

[0064] like Figure 4 As shown, in the pawl section, the additional brake 9 has a pawl 98.

[0065] The pawl 98 is hinged to the truss 1. Here, the pawl 98 can be directly installed to the truss 1 or indirectly installed to the truss 1 via other supports.

[0066] Furthermore, as mentioned earlier, the pawl 98 is configured to engage with or disengage from the teeth of the ratchet 92. Specifically, in the pawl portion, the auxiliary brake 9 also includes an electromagnet 99 and a connecting rod 100, with the electromagnet 99 connected to the pawl 98 via the connecting rod 100. When the auxiliary brake 9 engages due to an escalator malfunction, the electromagnet 99 is de-energized, and the connecting rod 11 pushes the front end of the pawl 98 into the teeth of the ratchet 92, causing the pawl 98 to engage with the ratchet 92. On the other hand, when the auxiliary brake 9 is not engaged, the electromagnet 99 is energized, and the connecting rod 100 pulls the pawl 98 out of the teeth of the ratchet 92, causing the pawl 98 to disengage from the teeth of the ratchet 92.

[0067] That is, the auxiliary brake 9 performs braking by engaging the pawl 98 into the tooth groove of the ratchet 92, and releases braking by disengaging the pawl 98 from the tooth groove of the ratchet 92.

[0068] [1-3] Operation of the auxiliary brake

[0069] The specific operation of the additional brake 9 in Embodiment 1 will be explained below.

[0070] Figure 8 This is a diagram showing the state of the additional brake 9 in the initial braking stage of embodiment 1. Figure 9 This is a diagram showing the state of the additional brake 9 in the later stage of braking according to Embodiment 1.

[0071] like Figure 8As shown, in the initial braking phase, the disc spring 97 is located at the end of the corresponding mounting hole 932 on the pressure plate 93 in the circumferential direction, with the minimum compression and the maximum height h1. At this time, the auxiliary brake 9 applies a relatively small braking force to the main drive shaft Ms of the escalator.

[0072] As braking proceeds, the disc spring 97, along with the bolt 95, slides from one side to the other on the inclined surface 933 around the mounting hole 932 in the circumferential direction, and the compression gradually increases. During this process, the braking force applied to the main drive shaft Ms gradually increases.

[0073] like Figure 9 As shown, at the end of the braking phase, the shank of bolt 95 abuts against the end of the mounting hole 932 on the other side of the circumference. At the same time, disc spring 97 slides out of inclined surface 933 and reaches the flat end face of pressure plate 93, reaching maximum compression and minimum height h2. At this time, auxiliary brake 9 applies maximum braking force to main drive shaft Ms, quickly bringing main drive shaft Ms to a stop.

[0074] [1-4] Main technical effects

[0075] The main technical effects of the additional brake 9 based on embodiment 1 are as follows.

[0076] According to embodiment 1, in the auxiliary brake 9, the mounting hole 932 on the pressure plate 93 through which the bolt 95 passes is formed as an arc-shaped elongated hole extending in the circumferential direction around the main drive shaft Ms of the escalator. On the end face of the pressure plate 93 opposite to the ratchet 92, around the mounting hole 932, a slope 933 is formed along the mounting hole 932 that gradually rises from one side to the other in the circumferential direction. The disc spring 97 is mounted in such a way that it can slide on the slope 933 in the circumferential direction. As the disc spring 97 slides from one side to the other in the circumferential direction, its compression gradually increases, thereby gradually increasing the braking force applied to the main drive shaft Ms of the escalator.

[0077] In this way, the disc spring 97 at the initial position is set at a relatively high height and has a relatively low braking force. Therefore, at the moment when the pawl 98 engages with the ratchet 92, the impact force is small and the risk of passengers falling is low.

[0078] As the disc spring 97 slides on the inclined surface 933 of the pressure plate 93, it is gradually compressed, and the braking force of the auxiliary brake 9 gradually increases. The braking force reaches its maximum when the bolt 95 rotates to engage with the end of the mounting hole 932 on the other side of the circumference. This allows the escalator to be quickly decelerated and stopped, ensuring braking performance.

[0079] Therefore, it can balance ensuring braking performance and reducing the impact force at the moment of braking.

[0080] According to embodiment 1, the inclined surface 933 on the pressure plate 93 is formed by a groove recessed from the end face of the pressure plate 93 on the side opposite to the ratchet 92, so the inclined surface 933 can be easily formed.

[0081] According to Embodiment 1, the inclined surface 933 on the pressure plate 93 is formed only around the mounting hole 932 on the end face of the pressure plate 93 on the side away from the ratchet 92, thus reducing the amount of machining required on the end face of the pressure plate 93 when forming the inclined surface 933.

[0082] According to embodiment 1, a plurality of mounting holes 932 are formed at intervals along the circumferential direction on the pressure plate 93, and correspondingly, a plurality / set of inclined surfaces 933, bolts 95, and disc springs 97 are also provided, so that sufficient braking force can be easily applied to the main drive shaft Ms of the escalator.

[0083] <2> Implementation Method 2

[0084] The auxiliary brake 9 in Embodiment 2 differs from the auxiliary brake 9 in Embodiment 1 in the structure of the pressure plate 93, but all other parts are the same.

[0085] Figure 10 This is a front view showing the structure of the pressure plate 93 of the additional brake 9 in Embodiment 2. Figure 11 This is an enlarged cross-sectional view showing the structure of the pressure plate 93 of the additional brake 9 in Embodiment 2. Figure 10 The diagram shows the pressure plate 93 cut at the CC line.

[0086] like Figure 10 and Figure 11 As shown, in Embodiment 2, each inclined surface 933 of the pressure plate 93 is formed by a boss 93a protruding from the end face of the pressure plate 93 on the side opposite to the ratchet 92.

[0087] Specifically, on the end face of the pressure plate 93 opposite to the ratchet 92, around each mounting hole 932, a boss 93a protruding from the end face of the pressure plate 93 is formed.

[0088] Each boss 93a includes an inclined platform 93a1 located on the upstream side in the circumferential direction and a flat platform 93a2 located on the downstream side in the circumferential direction.

[0089] The inclined platform 93a1 begins to form near the end of one side of the mounting hole 932 in the circumferential direction, gradually rises as it extends to the other side in the circumferential direction, and reaches its highest point just before reaching the end of the other side of the mounting hole 932 in the circumferential direction.

[0090] The flat platform 93a2 is formed near the end of the mounting hole 932 on the other side in the circumferential direction and is smoothly connected to the highest point of the inclined platform 93a1.

[0091] The top surface (upper surface) of the inclined platform 93a1 forms an inclined surface 933.

[0092] The other structures of the pressure plate 93 in Embodiment 2 are the same as those in Embodiment 1.

[0093] According to embodiment 2, the same technical effects as embodiment 1 can be achieved.

[0094] <3> Implementation Method 3

[0095] The auxiliary brake 9 in Embodiment 3 differs from the auxiliary brake 9 in Embodiments 1 and 2 in the structure of the pressure plate 93, but all other parts are the same.

[0096] Figure 12 This is a front view showing the structure of the pressure plate 93 of the additional brake 9 in embodiment 3. Figure 13 This is an enlarged cross-sectional view showing the structure of the pressure plate 93 of the additional brake 9 in Embodiment 3. Figure 12 The diagram shows the pressure plate 93 cut at the DD line.

[0097] In implementation methods 1 and 2, such as Figure 6 , Figure 7 , Figure 10 , Figure 11 As shown, the inclined surface 933 is formed only around the mounting hole 932 on the end face of the pressure plate 93. However, in embodiment 3, as... Figure 12 and Figure 13 As shown, on the end face of the pressure plate 93, the inclined surface 933 is formed in the radial direction of the pressure plate 93 over the entire range from the inner periphery 93IN of the pressure plate 93 to the outer periphery 93OUT of the pressure plate 93.

[0098] The other structures of the pressure plate 93 in Embodiment 3 are the same as those in Embodiments 1 and 2.

[0099] According to embodiment 3, it can achieve roughly the same technical effects as embodiments 1 and 2.

[0100] However, since the bevel 933 is formed only around the mounting hole 932, the amount of machining required when forming the bevel 933 is less, thus making implementations 1 and 2 more advantageous.

[0101] <4> Implementation Method 4

[0102] The auxiliary brake 9 in Embodiment 4 differs from the auxiliary brake 9 in Embodiment 1 in the structure of the pressure plate 93, but all other parts are the same.

[0103] Figure 14 This diagram shows the state of the additional brake in the initial braking stage of embodiment 4. Figure 15 This is a diagram showing the state of the additional brake in the later stage of braking according to embodiment 4.

[0104] like Figure 14 and 15 As shown, in Embodiment 4, the pressure plate 93 does not have a slope 933 like in Embodiment 1 on the end face of the side away from the ratchet 92. Each set of disc springs 97 is in direct contact with the end face of the pressure plate 93 at any position in the circumferential direction around the main drive shaft Ms. The height of each set of disc springs 97 is the same as the height h at all positions in the circumferential direction. This is different from Embodiment 1, but in other aspects it is the same as Embodiment 1.

[0105] According to implementation method 4, such as Figure 14 As shown, in the initial braking phase, the pressure plate 93 can be prevented from rotating with the main drive shaft Ms of the escalator. Therefore, the braking force is the resultant force of the friction force applied by the friction plate on one side of the ratchet 92 and the friction force between the pressure plate 93 and each set of disc springs 97, which is relatively small. Therefore, at the moment the pawl engages with the ratchet 92, the impact force is small, and the risk of passengers falling is low.

[0106] On the other hand, such as Figure 15 As shown, in the later stage of braking, the bolt 95 rotates to a position abutting the end on the other side of the circumference of the mounting hole 932, causing the pressure plate 93 to rotate with the main drive shaft Ms of the escalator. The braking force becomes the frictional force applied by the friction plates on both sides of the ratchet 92, which is relatively large. Therefore, the escalator can be stopped quickly, ensuring braking performance.

[0107] In other words, the additional brake 9 in embodiment 4 can also, to a certain extent, ensure braking performance and reduce the impact force at the moment of braking.

[0108] <5> Implementation Method 5

[0109] Embodiment 5 provides an escalator comprising a step chain with multiple steps, a main drive shaft for driving the step chain to move cyclically, and an auxiliary brake for applying braking force to the main drive shaft to brake the escalator. The auxiliary brake is an auxiliary brake 9 as described in any of Embodiments 1 to 4.

[0110] According to Embodiment 5, since the auxiliary brake adopts the auxiliary brake 9 in any of Embodiments 1 to 4, it can achieve the same technical effect as the auxiliary brake 9 in any of Embodiments 1 to 4.

[0111] <6> Implementation Method 6

[0112] Embodiment 6 provides an automated walkway comprising a pedal chain with multiple pedals, a main drive shaft for cyclically moving the pedal chain, and an auxiliary brake for applying braking force to the main drive shaft to brake the automated walkway. The auxiliary brake is an auxiliary brake 9 as described in any of Embodiments 1 to 4.

[0113] This technical solution is for inclined moving walkways.

[0114] According to embodiment 6, since the auxiliary brake adopts the auxiliary brake 9 in any of embodiments 1 to 4, it can achieve the same technical effect as the auxiliary brake 9 in any of embodiments 1 to 4.

[0115] <7> other

[0116] The embodiments of the present invention have been described above, but they are provided for ease of understanding of the invention, and the scope of protection of the present invention is not limited to these embodiments. Furthermore, those skilled in the art can make various modifications to these embodiments without departing from the technical concept of the present invention. Examples of these modifications are described below.

[0117] (1) In the above embodiments, a disc spring 97 is used as an elastic force-applying component, but it is not limited to this and other elastic force-applying components may also be used. For example, a helical spring may be used, or a combination of a helical spring and a disc spring may be used.

[0118] (2) In the above embodiments, each set of disc springs 97 includes four disc springs 97, but is not limited to this. It may also include more than four other types (e.g., two, three, five, etc.), or it may include only one disc spring 97.

[0119] (3) In the above embodiments, the pressure plate 93 has six mounting holes 932 formed in the circumferential direction. However, the number of mounting holes 932 is designed according to the product specifications and is not limited to six. It can also be designed to have other numbers as needed, such as five, seven, eight, etc.

[0120] (4) In the above embodiments, a plurality of mounting holes 932 are provided at equal intervals along the circumference, but this is not limited to this, and they may also be provided at non-equal intervals.

[0121] (5) In each of the above embodiments, a slope 933 is formed around each mounting hole 932, but it is not limited to this. A slope 933 may be formed only around a portion of the mounting holes 932, while no slope 933 may be formed around the remaining mounting holes 932.

[0122] (6) In the above embodiments, each of the inclined surfaces 933 of the pressure plate 93 is constructed in the same manner. However, the present invention is not limited thereto. For example, a portion of the inclined surfaces 933 may be formed by a groove recessed from the end face of the pressure plate 93, and the remaining inclined surfaces 933 may be formed by a boss protruding from the end face of the pressure plate 93. Alternatively, a portion of the inclined surfaces 933 may be formed only around the mounting hole 932, and the remaining inclined surfaces 933 may be formed in the radial direction of the pressure plate 93 over the entire range from the inner periphery of the pressure plate 93 to the outer periphery of the pressure plate 93.

[0123] The scope of protection of this invention is defined by the claims. Various modifications listed above, as well as other unlisted modifications that can be conceived by those skilled in the art without departing from the technical concept of this invention, are also included within the scope of protection of this invention.

Claims

1. An auxiliary brake used in an escalator or moving walkway for braking the escalator or moving walkway, characterized in that, Include: Wheel core (91), which is disposed in a manner that prevents relative rotation on the main drive shaft (Ms) of the drive step chain or pedal chain of the escalator or moving walkway in a circular motion; A pressure plate (93) is coaxially mounted to the wheel core (91) via bolts (95); A ratchet (92) is clamped between the wheel core (91) and the pressure plate (93); An elastic force-applying component (97), which is mounted in a compressed state between the end face of the pressure plate (93) on the side opposite to the ratchet (92) and the bolt (95); and A pawl (98) is provided in such a way that it can engage or disengage from the tooth groove of the ratchet (92); The mounting hole (932) on the pressure plate (93) through which the bolt (95) passes is formed as an elongated hole in an arc shape extending in the circumferential direction around the main drive shaft (Ms). On the end face of the pressure plate (93), at least around the elongated hole, a slope (933) is formed along the elongated hole that gradually rises from one side to the other in the circumferential direction. The elastic force-applying component (97) is installed in a manner that allows it to slide along the circumferential direction on the inclined surface (933). As it slides from one side of the circumferential direction to the other side, the amount of compression gradually increases, thereby gradually increasing the braking force on the main drive shaft (Ms).

2. The additional brake according to claim 1, characterized in that, The inclined surface (933) is formed by a groove recessed from the end face.

3. The additional brake according to claim 1, characterized in that, The inclined surface (933) is formed by a boss (93a) protruding from the end face.

4. The additional brake according to claim 1, characterized in that, The inclined surface (933) is formed only around the elongated hole on the end face of the pressure plate (93).

5. The additional brake according to claim 1, characterized in that, The pressure plate (93) is formed in a circular shape. On the end face of the pressure plate (93), the inclined surface (933) is formed in the radial direction of the pressure plate (93) over the entire range from the inner periphery (93IN) of the pressure plate (93) to the outer periphery (93OUT) of the pressure plate (93).

6. The additional brake according to any one of claims 1 to 5, characterized in that, The elongated holes are formed at intervals along the circumferential direction.

7. An auxiliary brake used in an escalator or moving walkway for braking the escalator or moving walkway, characterized in that, Include: Wheel core (91), which is disposed in a manner that prevents relative rotation on the main drive shaft (Ms) of the drive step chain or pedal chain of the escalator or moving walkway in a circular motion; A pressure plate (93) is coaxially mounted to the wheel core (91) via bolts (95); A ratchet (92) is clamped between the wheel core (91) and the pressure plate (93); An elastic force-applying component (97), which is mounted in a compressed state between the end face of the pressure plate (93) on the side opposite to the ratchet (92) and the bolt (95); and A pawl (98) is provided in such a way that it can engage or disengage from the tooth groove of the ratchet (92); The mounting hole (932) on the pressure plate (93) through which the bolt (95) passes is formed as an elongated hole in an arc shape extending in the circumferential direction around the main drive shaft (Ms). The bolt (95) is arranged in such a way that it can slide relative to the pressure plate (93) along the elongated hole, thereby increasing the braking force on the main drive shaft (Ms) by abutting against the end of the elongated hole on the other side of the circumferential direction as it slides from one side of the circumferential direction to the other side.

8. The additional brake according to claim 7, characterized in that, The elongated holes are formed at intervals along the circumferential direction.

9. An escalator, characterized in that, Include: A ladder chain, which has multiple ladders installed; The main drive shaft drives the ladder chain to move cyclically; and The additional brake according to any one of claims 1 to 8 is used to apply braking force to the main drive shaft to brake the escalator.

10. An automated walkway, characterized in that, Include: A pedal chain, which is fitted with multiple pedals; The main drive shaft drives the pedal chain to move cyclically; and The additional brake according to any one of claims 1 to 8 is used to apply braking force to the main drive shaft to brake the moving walkway.

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