Escalator device and escalator

Abstract

The utility model provides a kind of step device and escalator, step device includes: step shaft, by rolling part movably supported on track, track is installed on the side support frame of escalator;Two connecting parts, respectively installed in the two ends of step shaft extending in axial direction;Step, two installation claws are provided in the two sides of step extending in axial direction, and each installation claw is installed step on step shaft by connecting part;And two detection parts, installed on the crossbeam between side support frame, configured to in the case where the distance that connecting part moves along the axial direction of step shaft is greater than predetermined distance, detection part sends alarm signal indicating that step exists the risk of possibly separating from step shaft.

Description

Technical Field

[0001] At least one embodiment of this utility model relates to a step device for escalators, specifically to a step device and an escalator. Background Technology

[0002] Escalators, as a type of transportation machinery for carrying people up and down, are widely used in public places such as shopping malls, subways, and train stations. The steps, as a crucial load-bearing component of the escalator, are for people to step on. The mounting claws of the steps are installed on the step shaft via bushings to secure the steps. Due to prolonged use and vibration, there is a risk that the bushings may slip along the axial direction of the step shaft, causing the steps to detach from the shaft.

[0003] If a step detaches from the step axis while the escalator is in operation, there is a risk of personal injury because the escalator is still running. Utility Model Content

[0004] In view of this, the present invention provides a ladder device that issues an alarm signal when there is a risk that the ladder may detach from the ladder axis, thereby preventing personal injury.

[0005] According to an embodiment of the present invention, a step device is provided, comprising: a step shaft movably supported on a track by a rolling part, the track being mounted on a side support frame of an escalator; two connecting parts respectively mounted at both ends of the step shaft extending in the axial direction; a step, each of which has two mounting claws on both sides extending in the axial direction, each mounting claw mounting the step on the step shaft via the connecting part; and two detection parts mounted on a crossbeam located between the side support frames, configured to issue an alarm signal indicating a risk that the step may detach from the step shaft when the connecting part moves a distance greater than a predetermined distance in the axial direction of the step shaft.

[0006] According to an embodiment of the present invention, each of the connecting portions includes: a bushing, mounted on the outside of the ladder shaft, with the mounting claw clamping the outside of the bushing; and a fastener, pressing against one side of the bushing extending in the axial direction to prevent the bushing from moving toward the fastener in the axial direction, thereby preventing the bushing from disengaging from the mounting claw in the axial direction.

[0007] According to an embodiment of the present invention, the bushing includes: a body configured as a generally cylindrical body, wherein the mounting claw engages with the outside of the body; and a protrusion located near one end of the body close to the fastener, the protrusion protruding radially from the body, the fastener pressing against the end of the bushing to prevent the body from moving axially toward the fastener and to prevent the body from disengaging from the mounting claw in the axial direction.

[0008] According to an embodiment of the present invention, the fastener is configured as an annular clamp that abuts against the protrusion and is clamped onto the step shaft.

[0009] According to an embodiment of the present invention, each detection unit includes: a support frame, one end of which is mounted on the crossbeam and extends toward the step axis; a detection unit mounted on the support frame; and a sensing unit connected to the detection unit. The end of the sensing unit extends along the axial direction to the vicinity of the connecting part. When the moving distance of the connecting part along the axial direction is greater than a predetermined distance, the step touches the sensing unit during the movement of the step and triggers the detection unit, causing the detection unit to issue an alarm signal indicating that there is a risk that the step may detach from the step axis.

[0010] According to an embodiment of the present invention, the sensing unit includes: a lever, which is installed in the detection unit and extends along the axial direction to the vicinity of the connecting portion. When the moving distance of the connecting portion along the axial direction is greater than a predetermined distance, the lever is touched, causing the lever to swing in a plane perpendicular to the step axis to trigger the detection unit.

[0011] According to an embodiment of the present invention, the sensing unit further includes a connecting rod, which is installed in the detection unit, extends toward the step shaft, and is connected to the end of the lever away from the connecting portion.

[0012] According to an embodiment of the present invention, the connecting rod and the lever are made of an elastic material.

[0013] According to an embodiment of the present invention, the detection unit is a displacement sensor, which is installed on the support frame and connected to the sensing unit. It is suitable for detecting the swing displacement of the sensing unit in a plane perpendicular to the ladder axis. When the swing displacement is greater than zero, it indicates that the moving distance of the connecting part along the axial direction is greater than a predetermined distance.

[0014] According to an embodiment of the present invention, an escalator is provided, comprising: the step device described in the above embodiment; and a host computer, communicatively connected to the detection unit of the step device, adapted to receive an alarm signal issued by the detection unit indicating that there is a risk that the step may detach from the step axis, and in response to the alarm signal, control the escalator to stop running.

[0015] According to the above embodiment of the present invention, when the connecting part moves a distance greater than a predetermined distance along the axial direction of the step axis, the connecting part will disengage from the mounting claw. At this time, the detection part adjacent to the connecting part issues an alarm signal indicating that there is a risk that the step may disengage from the step axis, so as to remind that there is a safety hazard in the escalator and avoid causing personal injury. Attached Figure Description

[0016] Figure 1 This is a side view of the escalator according to an embodiment of the present utility model;

[0017] Figure 2 This is a partial three-dimensional schematic diagram of the ladder device and crossbeam installation according to an embodiment of the present utility model;

[0018] Figure 3 This is a partial three-dimensional installation schematic diagram of the ladder, ladder shaft, and connecting part of the ladder device according to an embodiment of the present utility model;

[0019] Figure 4 yes Figure 1 A sectional view taken from point AA;

[0020] Figure 5 yes Figure 4 A magnified view of part M in the middle;

[0021] Figure 6 yes Figure 5 A magnified view of part N in the middle;

[0022] Figure 7 This is a three-dimensional installation diagram of the ladder, ladder shaft, and connecting part of the ladder device according to an embodiment of the present utility model;

[0023] Figure 8 yes Figure 7 A magnified view of part P in the middle;

[0024] Figure 9 yes Figure 4 A sectional view taken from point BB; and

[0025] Figure 10 This is a top view of one side connection part, detection part, and crossbeam installation of the ladder device according to an embodiment of the present utility model.

[0026] In the picture:

[0027] 1-Step shaft;

[0028] 2-Connecting part;

[0029] 21-Sleeve; 211-Body; 212-Protrusion; 213-Limiting strip;

[0030] 22-Fasteners;

[0031] 3-Step; 31-Mounting claw; 311-Barrel;

[0032] 4-Testing Department;

[0033] 41-Sensing unit; 411-Link; 412-Toggle lever;

[0034] 42-Support frame;

[0035] 43-Detection unit; 431-Displacement sensor;

[0036] 5-Crossbeam;

[0037] 6-Side support frame. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0039] According to one aspect of the present invention, a step device is provided, comprising: a step shaft movably supported on a track by a rolling part, the track being mounted on a side support frame of an escalator; two connecting parts respectively mounted at both ends of the step shaft extending in the axial direction; a step, with two mounting claws provided on both sides of the step extending in the axial direction, each mounting claw mounting the step on the step shaft via the connecting part; and two detection parts mounted on a crossbeam located between the side support frames, configured to issue an alarm signal indicating a risk that the step may detach from the step shaft when the connecting part moves a distance greater than a predetermined distance in the axial direction of the step shaft.

[0040] Figure 1 This is a side view of the escalator according to an embodiment of the present utility model; Figure 2 This is a partial three-dimensional schematic diagram of the ladder device and crossbeam installation according to an embodiment of the present utility model; Figure 3 This is a partial three-dimensional installation schematic diagram of the ladder, ladder shaft, and connecting part of the ladder device according to an embodiment of the present utility model; Figure 4 yes Figure 1 A sectional view taken from point AA.

[0041] According to an exemplary embodiment of the present invention, please refer to Figures 1-4A step device is provided, including a step shaft 1, two connecting parts 2, a step 3, and two detection parts 4. The step shaft 1 is movably supported on a track by rolling parts, and the track is mounted on a side support frame 6 of the escalator. The two connecting parts 2 are respectively installed at both ends of the step shaft 1 extending in the axial direction. Two mounting claws 31 are provided on both sides of the step 3 extending in the axial direction. Each mounting claw 31 mounts the step 3 to the step shaft 1 via the connecting parts 2. The two detection parts 4 are mounted on a crossbeam 5 located between the side support frames 6 and are configured to issue an alarm signal indicating that there is a risk of the step 3 detaching from the step shaft 1 if the connecting parts 2 move a distance greater than a predetermined distance in the axial direction of the step shaft 1.

[0042] In this embodiment, two connecting parts 2 are respectively installed at both ends of the step shaft 1 extending in the axial direction. Two mounting claws 31 are provided on both sides of the step 3 extending in the axial direction. Each mounting claw 31 mounts the step 3 onto the step shaft 1 via the connecting parts 2. If the connecting part 2 moves a distance greater than a predetermined distance in the axial direction, the connecting part 2 will disengage from the mounting claw 31. At this time, the detection unit 4 adjacent to the connecting part 2 issues an alarm signal indicating that the step 3 may detach from the step shaft 1, thus indicating a safety hazard in the escalator, preventing personal injury, and prompting maintenance personnel to repair the step assembly.

[0043] In some exemplary embodiments, reference is made to Figures 2-4 Each connecting part 2 includes a bushing 21 and a fastener 22. The bushing 21 is rotatably mounted on the outside of the step shaft 1, and the mounting claw 31 clamps the outside of the bushing 21. The fastener 22 presses against one side of the bushing 21 extending in the axial direction to prevent the bushing 21 from moving in the axial direction toward the fastener 22, thereby preventing the bushing 21 from disengaging from the mounting claw 31 in the axial direction.

[0044] In this embodiment, the end of the mounting claw 31 is provided with a bayonet 311, and a limiting strip 213 extending in the axial direction is formed on the bushing 21. The bayonet 311 of the mounting claw 31 engages with the limiting strip 213 formed on the bushing 21 to engage the mounting claw 31 on the outside of the bushing 21, thereby mounting the step 3 on the step shaft 1.

[0045] Furthermore, the fastener 22 is locked to the outside of the step shaft 1 and presses against the side of the bushing 21 extending in the axial direction to prevent the bushing 21 from moving toward the fastener 22 in the axial direction, thereby preventing the bushing 21 from sliding out of the mounting claw 31 in the axial direction, avoiding the bushing 21 from disengaging from the mounting claw 31, and thus preventing the step 3 from disengaging from the step shaft 1.

[0046] Figure 5 yes Figure 4 A magnified view of part M in the middle; Figure 6 yes Figure 5 A magnified view of part N in the middle; Figure 7 This is a three-dimensional installation diagram of the ladder, ladder shaft, and connecting part of the ladder device according to an embodiment of the present utility model; Figure 8 yes Figure 7 A magnified view of part P in the middle.

[0047] In some exemplary embodiments, reference is made to Figures 4-8 The bushing 21 includes a body 211 and a protrusion 212. The body 211 is constructed as a generally cylindrical shape and fits onto the step shaft 1. A mounting claw 31 engages with the outside of the body 211. The protrusion 212 is located at one end of the body 211 in the axial direction near the fastener 22. Figure 6 Near the left end of the body 211, a protrusion 212 protrudes radially from the body 211. A fastener 22 presses against the end of the bushing 21 where the protrusion 212 is located. Figure 6 (Left end of the central sleeve 21) to prevent the body 211 from moving toward the fastener 22 in the axial direction and to prevent the body 211 from disengaging from the mounting claw 31 in the axial direction.

[0048] In this embodiment, the mounting claw 31 is engaged with the outside of the body 211, the body 211 is sleeved on the ladder shaft 1, and the protrusion 212 is located near the end of the body 211 in the axial direction close to the fastener 22, and protrudes from the body 211 in the radial direction. When the mounting claw 31 is engaged with the outside of the ladder shaft 1, one side of the protrusion 212 ( Figure 6 The right side of the convex portion abuts against the mounting claw 31. Since the mounting claw 31 is fixed relative to the step shaft 1 in the axial direction, it prevents the body 211 from moving away from the fastener 22. Figure 5 The leftward direction indicated by the middle arrow Y prevents the body 211 from disengaging from the mounting claw 31 in a direction away from the fastener 22, thereby keeping the step 3 connected to the step shaft 1.

[0049] On the other hand, the fastener 22 presses against the end of the bushing 21 where the protrusion 212 is located, preventing the body 211 from moving axially toward the fastener 22, such as Figure 5 The arrow X points to the right to prevent the body 211 from detaching from the mounting claw 31 in the axial direction, thereby keeping the step 3 connected to the step shaft 1 and ensuring the safe operation of the escalator.

[0050] In some exemplary embodiments, reference is made to Figures 2-3 ,as well as Figures 7-8 The fastener 22 is configured as an annular clamp that presses against the protrusion 212 and is clamped onto the step shaft 1.

[0051] In this embodiment, the fastener 22 is set as an annular clamp and abuts against the protrusion 212, so that when the clamp is clamped on the step shaft 1, a clamping force in the axial direction is applied to the bushing 212, restricting the body 211 from moving in the axial direction toward the clamp (or away from the mounting claw 31), so as to prevent the body 211 from sliding out of the mounting claw 31 in the axial direction, thereby preventing the body 211 from disengaging from the mounting claw 31, so as to keep the step 3 connected to the step shaft 1.

[0052] On the other hand, if the clamp 22, which acts as a fastener, becomes loose, it may move away from the bushing 21, preventing the fastener 22 from properly engaging with the bushing 21. This could cause the bushing 21 to slide away from the mounting claw 31, potentially leading to the risk that the step 3 may detach from the step shaft 1. It is understandable that if the bushing 21 completely detaches from the mounting claw 31 in the axial direction, the step 3 will detach from the step shaft 1, potentially causing a safety accident during escalator operation.

[0053] Figure 9 yes Figure 4 A sectional view taken from point BB; Figure 10 This is a top view of one side connection part, detection part, and crossbeam installation of the ladder device according to an embodiment of the present utility model.

[0054] In some exemplary embodiments, reference is made to Figure 2 , Figure 4 , Figure 9 as well as Figure 10 Each detection unit 4 includes a support frame 42, a detection unit 43, and a sensing unit 41. One end of the support frame 42 is mounted on the crossbeam 5 and extends toward the step shaft 1. The detection unit 43 is mounted on the support frame 42. The sensing unit 41 is connected to the detection unit 43. The end of the sensing unit 41 extends axially to the vicinity of the connecting part 2. If the axial movement distance of the connecting part 2 is greater than a predetermined distance, during the movement of the step 3, the step 3 touches the sensing unit 41 and triggers the detection unit 43, causing the detection unit 43 to issue an alarm signal indicating that there is a risk that the step 3 may detach from the step shaft 1.

[0055] It is understood that the predetermined distance should be set to be greater than 0 and less than the minimum moving distance of the bushing 21 when it moves completely away from the mounting claw 31 in the direction away from the mounting claw 31. This minimum moving distance is equal to the side of the protrusion 212 facing the mounting claw 31. Figure 6 The right side of the central protrusion), and the end of the body 211 furthest from the mounting part 2 ( Figure 6The distance between the right end of the main body 211 and the step shaft 1. For example, the predetermined distance is greater than 5 mm and less than one-third of the minimum moving distance. In one embodiment, the predetermined distance is greater than 8 mm and less than one-quarter of the minimum moving distance. In this way, if the axial movement distance of the connecting part 2 is greater than the predetermined distance before the step 3 is completely detached from the step shaft 1, an alarm signal is issued indicating that there is a risk of the step 3 detaching from the step shaft 1, so as to indicate that there is a safety hazard in the escalator and prompt maintenance personnel to maintain the step device to ensure that the step 3 does not completely detach from the step shaft 1, thereby avoiding personal injury and property damage.

[0056] In this embodiment, the sensing unit 41 is connected to the detection unit 43. The end of the sensing unit 41 extends axially to the vicinity of the connecting part 2. When the moving distance of the connecting part 2 in the axial direction is greater than a predetermined distance, the connecting part 2 slides out of the mounting claw 31 and is about to detach from the mounting claw 31. The step 3 is about to detach from the step shaft 1. During the movement of the step 3, it touches the sensing unit 41 and triggers the detection unit 43, causing the detection unit 43 to issue an alarm signal indicating that there is a risk that the step 3 may detach from the step shaft 1.

[0057] In some exemplary embodiments, reference is made to Figure 2 , Figures 4-5 The sensing unit 41 includes a lever 412. The lever 412 is mounted on the detection unit 43 and extends axially to the vicinity of the connecting portion 2. When the connecting portion 2 moves a distance greater than a predetermined distance in the axial direction, the lever 412 is touched, causing the lever 412 to swing in a plane perpendicular to the step axis 1, thereby triggering the detection unit 43.

[0058] In this embodiment, the sensing unit 41 includes a lever 412, which is mounted on the detection unit 43 and extends axially to the vicinity of the connecting portion 2. When the connecting portion 2 moves a distance greater than a predetermined distance in the axial direction, part of the connecting portion 2 slides out of the mounting claw 31 and is about to disengage from the mounting claw 31. During the movement of the step 3, the part of the connecting portion 2 that has slid out of the mounting claw 31 touches the lever 412, causing the lever 412 to swing in a plane perpendicular to the step axis 1, thereby triggering the detection unit 43.

[0059] In some exemplary embodiments, reference is made to Figure 2 , Figures 4-5 The sensing unit 41 also includes a connecting rod 411. The connecting rod 411 is mounted on the detection unit 43, extends toward the step shaft 1, and is connected to the end of the lever 412 away from the connecting part 2.

[0060] In this embodiment, the sensing unit 41 further includes a connecting rod 411, which is mounted on the detection unit 43, extends toward the step shaft 1, and is connected to the end of the lever 412 away from the connecting part 2 to support the lever 412. When the part of the connecting part 2 that slides out of the mounting claw 31 touches the lever 412, the lever 412 and the connecting rod 411 swing together in a plane perpendicular to the step shaft 1, which triggers the detection unit 43.

[0061] In some exemplary embodiments, the link 411 and the lever 412 are made of an elastic material.

[0062] In this embodiment, the connecting rod 411 and the lever 412 are made of elastic material so that when the lever 412 is touched by an external force, the lever 412 swings in a plane perpendicular to the step axis 1, and after the external force applied to the lever 412 is removed, the lever 412 can return to its original state.

[0063] In some exemplary embodiments, reference is made to Figure 2 , Figures 4-5 The detection unit 43 is a displacement sensor 431. The displacement sensor 431 is mounted on the support frame 42 and connected to the sensing unit 41. It is suitable for detecting the swing displacement of the sensing unit 41 in a plane perpendicular to the step axis 1. When the swing displacement is greater than zero, it indicates that the moving distance of the connecting part 2 in the axial direction is greater than a predetermined distance.

[0064] In this embodiment, the detection unit 43 is a displacement sensor 431, which is installed on the support frame 42 and connected to the sensing unit 41. When the swing displacement of the sensing unit 41 in the plane perpendicular to the step axis 1 is greater than zero, it indicates that the moving distance of the connecting part 2 in the axial direction is greater than a predetermined distance. At this time, the detection unit 4 sends an alarm signal indicating that there is a risk that the step 3 may detach from the step axis 1.

[0065] According to an exemplary embodiment of the present invention, an escalator is provided, including the step device described in the above embodiment and a host computer. The host computer is communicatively connected to the detection unit 4 of the step device, and is adapted to receive an alarm signal issued by the detection unit 4 indicating that there is a risk that the step 3 may detach from the step shaft 1, and in response to the alarm signal, control the escalator to stop running.

[0066] In this embodiment, by installing the step device described in the above embodiment in the escalator, the detection unit 4 of the step device is communicatively connected to the host computer. When the detection unit 4 detects that the moving distance of the connecting part 2 along the axial direction of the step shaft 1 is greater than a predetermined distance, the connecting part 2 is about to detach from the step shaft 1, and there is a risk that the step 3 may detach from the step shaft 1. At this time, the detection unit 4 issues an alarm signal indicating that there is a risk that the step 3 may detach from the step shaft 1. When the host computer receives the alarm signal, it controls the escalator to stop running, so as to avoid the escalator continuing to run when the step 3 detaches from the step shaft 1, which could cause personal injury.

[0067] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A ladder device, characterized in that, include: The step shaft (1) is movably supported on a track by a rolling part, the track being mounted on the side support frame (6) of the escalator; Two connecting parts (2) are respectively installed at both ends of the ladder shaft (1) extending in the axial direction; A step (3) is provided with two mounting claws (31) on both sides extending along the axial direction. Each mounting claw (31) mounts the step (3) on the step shaft (1) through the connecting part (2). as well as Two detection units (4) are mounted on a crossbeam (5) located between the side support frames (6) and are configured to issue an alarm signal indicating that the step (3) may detach from the step shaft (1) when the distance the connecting part (2) moves in the axial direction of the step shaft (1) is greater than a predetermined distance.

2. The step device according to claim 1, characterized in that, Each of the connecting parts (2) includes: A bushing (21) is mounted on the outside of the stepped shaft (1), and the mounting claw (31) clamps the outside of the bushing (21); and Fastener (22) abuts against one side of the bushing (21) extending in the axial direction to prevent the bushing (21) from moving toward the fastener (22), thereby preventing the bushing (21) from disengaging from the mounting claw (31) in the axial direction.

3. The step device according to claim 2, characterized in that, The bushing (21) includes: The body (211) is constructed in a generally cylindrical shape, and the mounting claw (31) engages with the exterior of the body (211); and A protrusion (212) is located near one end of the body (211) close to the fastener (22). The protrusion (212) protrudes from the body (211) in the radial direction. The fastener (22) presses against the end of the bushing (21) to prevent the body (211) from moving toward the fastener (22) and to prevent the body (211) from disengaging from the mounting claw (31) in the axial direction.

4. The step device according to claim 3, characterized in that, The fastener (22) is configured as an annular clamp that abuts against the protrusion (212) and is clamped onto the step shaft (1).

5. The ladder device according to claim 1, characterized in that, Each of the detection units (4) includes: A support frame (42) is mounted at one end on the crossbeam (5) and extends toward the step axis (1); The detection unit (43) is mounted on the support frame (42); and A sensing unit (41) is connected to the detection unit (43). The end of the sensing unit (41) extends along the axial direction to the vicinity of the connecting part (2). When the moving distance of the connecting part (2) along the axial direction is greater than a predetermined distance, the step (3) touches the sensing unit (41) during its movement and triggers the detection unit (43), causing the detection unit (43) to issue an alarm signal indicating that there is a risk that the step (3) may detach from the step shaft (1).

6. The step device according to claim 5, characterized in that, The sensing unit (41) includes: A lever (412) is installed in the detection unit (43) and extends along the axial direction to the vicinity of the connecting part (2). When the moving distance of the connecting part (2) along the axial direction is greater than a predetermined distance, the lever (412) is touched, causing the lever (412) to swing in a plane perpendicular to the step axis (1) to trigger the detection unit (43).

7. The step device according to claim 6, characterized in that, The sensing unit (41) further includes: A connecting rod (411) is installed in the detection unit (43), extends toward the step shaft (1), and is connected to the end of the lever (412) away from the connecting part (2).

8. The step device according to claim 7, characterized in that, The connecting rod (411) and the lever (412) are made of elastic material.

9. The step device according to claim 5, characterized in that, The detection unit (43) is a displacement sensor (431). The displacement sensor (431) is installed on the support frame (42) and connected to the sensing unit (41). It is suitable for detecting the swing displacement of the sensing unit (41) in a plane perpendicular to the step axis (1). When the swing displacement is greater than zero, it indicates that the moving distance of the connecting part (2) along the axial direction is greater than a predetermined distance.

10. An escalator, characterized in that, include: The step device according to any one of claims 1-9 above; as well as The host computer is communicatively connected to the detection unit (4) of the step device, and is adapted to receive an alarm signal issued by the detection unit (4) indicating that there is a risk that the step (3) may detach from the step shaft (1), and in response to the alarm signal, control the escalator to stop running.

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