Safety escalator with handrail section synchronization

Abstract

The application provides a safe automatic escalator with segmented synchronous handrails, which comprises an escalator body, a plurality of segmented handrail belts arranged on both sides of the escalator body, a main driving part and a chain arranged on the escalator body, at least one dragging device corresponding to each handrail belt, wherein the main driving part drives the dragging device to rotate through the chain, the dragging device drives the handrail belt to rotate, and the dragging device is provided with a braking structure for locking the dragging device. The application realizes the dispersed driving and braking of the equipment, so that the passengers on the conveying device can be safely segmented and shunted, the passengers can be more safely segmented and braked when an emergency occurs, and the cost is reduced and the construction is facilitated by further using one escalator for multiple purposes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of escalators, and in particular to a safety escalator with segmented synchronous handrails. BACKGROUND

[0002] Passenger conveyors include escalators, moving walkways, etc. When the lifting height of an escalator increases or the load increases, the corresponding driving device, chain, and other components become larger, or special components are used. However, the braking device does not increase with the increase in the lifting height of the passenger conveyor or the increase in the load. Currently, the braking device is only provided at the upper part of the passenger conveyor. When the braking device fails or the chain breaks, the conveyor will inevitably reverse or accelerate, causing casualties or property damage. The higher the passenger conveyor is or the longer it is, the greater the friction of the handrail belt conveying equipment. Currently, the power source of the handrail belt is generally provided at the upper end of the equipment. It is very difficult to drive the passenger conveyor at one end and there is a risk of asynchronization with the main conveying device. In the patent document CN_215666534_U, a safety escalator is disclosed. This invention has handrail modules with independent driving in each segment, allowing a passenger conveyor to divide passengers according to actual conditions. The synchronization of the conveyor ensures that passengers do not gather. However, the independent driving of each segment leads to new technical problems. The height consistency between the independent driving segments needs to be maintained. When the handrail belt is segmented too much or the lifting height is too high, the installation difficulty and equipment cost will increase significantly. In addition, the synchronization of the handrail belt and the steps cannot be controlled. Furthermore, the braking device of the current escalator or moving walkway is generally provided at the upper part of the passenger conveyor. When the lifting height of the escalator or moving walkway reaches a certain height, the number and position of the braking device no longer change. When the braking device fails or the chain breaks, the centralized braking effect is not good, and the conveyor will inevitably reverse or accelerate. SUMMARY

[0003] The present application solves the problem of poor synchronization and poor braking effect of independent driving of segmented handrails. It proposes a safety escalator with segmented synchronous handrails. By dispersing the driving and braking of the equipment, passengers on the conveyor are safely segmented and divided, making it safer when encountering sudden emergencies, and further allowing multiple uses of one escalator to reduce costs and facilitate construction.

[0004] To achieve the above-mentioned purpose, the following technical solutions are proposed:

[0005] The application discloses a safe automatic escalator with segmented synchronous handrails, which comprises an escalator body, a plurality of segmented handrail belts arranged on both sides of the escalator body, a main driving part and a chain provided on the escalator body, at least one dragging device corresponding to each handrail belt, the main driving part drives the dragging device to rotate through the chain, the dragging device drives the handrail belt to rotate, and the dragging device is provided with a braking structure for locking the dragging device.

[0006] The handrail belt of the application is one or more segments and presents a circular motion track; the chain is connected in a ring shape on both sides and serves as a medium for kinetic energy transmission; the main driving part drives the dragging device to rotate synchronously; the dragging device drives the handrail belt to rotate simultaneously; the steps act on the chain and present a circular operation with the chain track, so that the steps and the handrail belt rotate synchronously; when the automatic escalator or the moving sidewalk encounters a higher lifting height or a larger horizontal span, the segmented handrail belt of the application can realize the function of multiple escalators for one escalator or moving sidewalk, thereby improving the conveying efficiency of passengers riding the escalator. Meanwhile, the dragging device is provided with a braking structure, which can perform emergency braking on the dragging device when the escalator is powered off or the chain is broken, so that the steps and the handrail belt are braked simultaneously, thereby ensuring the safety of passengers. The main driving part is provided with one or two driving motors, which make the chain move in a cycle.

[0007] Preferably, the dragging device is provided with a shaft body, driving wheels and driving toothed discs which are symmetrically arranged at both ends of the shaft body, the driving wheels and the driving toothed discs are coaxially fixed at one end of the shaft body, the braking structure is used for locking the driving toothed disc, the driving wheels are used for dragging the handrail belt, and the driving toothed disc is used for transmission connection with the chain.

[0008] Preferably, the braking structure comprises a power member and a brake member which are fixed on the shaft body, the power member is provided with a connecting rod which limits the brake member, the brake member comprises left and right symmetric clamping hoops, the lower part of the clamping hoop is connected with a first bolt and a second bolt, the upper part of the clamping hoop is connected with a third bolt, the clamping hoop is rotationally connected to the shaft body through the first bolt, springs are arranged between the second bolt and the outer wall of the clamping hoop and between the third bolt and the outer wall of the clamping hoop, the driving toothed disc is provided with a braking force acting shaft, the clamping hoop is used for clamping the braking force acting shaft, the end of the connecting rod is provided with a conical table, the clamping hoop is provided with a conical groove corresponding to the position of the conical table, the connecting rod is slidingly connected in the conical groove, and the upper part of the clamping hoop is provided with a connecting sliding groove in which a fourth bolt connecting the clamping hoop and the shaft body is arranged.

[0009] As preferred, the power component comprises a guide sleeve, a gap ring is arranged in the guide sleeve, reset springs are symmetrically arranged on both sides of the gap ring, permanent magnets are connected to the reset springs, a sliding bearing is arranged in the guide sleeve, the permanent magnets are sleeved in the sliding bearing, a coil is arranged around the permanent magnets on the outer side of the guide sleeve, the connecting rod is fixedly connected to one end of the permanent magnet, and a baffle is arranged on the side of the guide sleeve close to the connecting rod.

[0010] As preferred, the brake force acting shaft is provided with a stop table at one end close to the shaft body, and the clamping hoop is arranged between the stop table and the end face of the driving gear disc.

[0011] As preferred, the driving gear disc and the driving wheel are arranged in a split mode, the driving gear disc and the driving wheel are coaxially provided with a through circular groove with the same diameter, the shaft body is provided with a plurality of threaded holes at the end, the shaft body passes through the driving gear disc and the driving wheel in sequence, the outer side of the driving wheel is provided with a fixed stop block, the fixed stop block is provided with a plurality of through holes corresponding to the threaded holes, and a plurality of locking screws are arranged on the through holes and are threadedly connected with the threaded holes.

[0012] The split arrangement is convenient for adjusting the initial position of the driving gear disc on both sides during actual installation.

[0013] As preferred, the escalator body is provided with a second speed sensor for detecting the speed of the handrail belt, a first speed sensor for detecting the output speed of the main driving part, and a main control unit, and the main control unit is electrically connected with the first speed sensor, the second speed sensor and the brake structure. The main control unit controls the operation / stop of the driving motor and controls the auxiliary brake of the dragging device. The dragging device and the brake structure can reversely brake the driving chain movement.

[0014] As preferred, the main control unit is provided with the following control logic:

[0015] S1, the main control unit judges whether the main driving part and the dragging device are in normal state, if yes, S2 is performed, and if not, the equipment abnormality is fed back;

[0016] S2, the first speed sensor detects the output speed of the main driving part, and the second speed sensor detects the running speed of the handrail belt;

[0017] S3, the main control unit judges whether the output speed of the main driving part and the running speed of the handrail belt are within the set target threshold range, if yes, returns to S2, and if not, the main control unit controls the brake structure to perform locking operation and feeds back the equipment abnormality.

[0018] The beneficial effects of the present application are: according to the chain simultaneously driving multiple dragging devices and braking structures, further making the handrail belt synchronous operation; according to the reaction force of the chain when the multiple dragging devices and braking structures brake, further segmenting and dispersing the braking force of the chain, further preventing the escalator from accelerating downward or reversing in the event of an emergency, increasing the safety and reliability of the escalator; according to the segmented exit position of the different handrails, further realizing the entry and exit of passengers according to actual needs, further improving equipment utilization and reducing the cost of multiple equipment; according to the dispersed layout of the multiple dragging devices and braking structures, further reducing the upper equipment space of the traditional equipment, and further reducing the installation and manufacturing difficulty of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the embodiment;

[0020] Figure 2 is a local assembly schematic diagram of the dragging device of the embodiment;

[0021] Figure 3 is an assembly diagram of the dragging device and the braking structure of the embodiment;

[0022] Figure 4 is an exploded view of the braking structure of the embodiment;

[0023] Figure 5 is a structural schematic diagram of the driving gear disc of the embodiment;

[0024] Figure 6 is a structural schematic diagram of the gripping hoop of the embodiment;

[0025] Figure 7 is a sectional view of the power member of the embodiment;

[0026] Figure 8 is a control flowchart of the master control unit of the embodiment;

[0027] 1, master control unit 2, main drive part 4, dragging device 5, handrail 6, escalator main body 7, step 8, first speed sensor 9, second speed sensor 10, chain 21, fourth bolt 22, connecting sliding chute 23, first bolt 24, second bolt 25, third bolt 28, taper groove 31, cone 32, sliding bearing 33, baffle 34, return spring 35, guide sleeve 36, coil 37, magnetic ring 38, permanent magnet 39, connecting rod 420, driving wheel 421, braking force acting shaft 422, driving gear disc 423, brake member 430, power member. DETAILED DESCRIPTION

[0028] Embodiment:

[0029] The present embodiment proposes a safety automatic escalator with segmented synchronous handrails, referring to Figure 1 andFigure 2 The escalator body 6 is provided with a plurality of segmented handrails 5 on both sides, and the escalator body 6 is provided with a main driving part 2 and a chain 10. Each handrail 5 is provided with at least one dragging device 4 corresponding to the handrail 5. The main driving part 2 drives the dragging device 4 to rotate through the chain 10. The dragging device 4 drives the handrail 5 to rotate. The dragging device 4 is provided with a brake structure for locking the dragging device 4. The escalator body 6 is provided with a second speed sensor 9 for detecting the speed of the handrail 5, a first speed sensor 8 for detecting the output speed of the main driving part 2, and a main control unit 1. The main control unit 1 is electrically connected with the first speed sensor 8, the second speed sensor 9 and the brake structure. The specific structure of the first speed sensor 8 and the second speed sensor 9 has been disclosed in the patent document CN_215666534_U, which is not described in this embodiment as prior art.

[0030] The handrail 5 of the escalator is segmented and presents a circular motion trajectory. The chain 10 is provided with double sides and is connected in a circular shape. The chain 10 is used as a kinetic energy transmission medium. The main driving part 2 drives the dragging device 4 to rotate synchronously. The dragging device 4 drives the handrail 5 to rotate simultaneously. The steps 7 act on the chain and present a circular operation with the chain trajectory. The steps 7 and the handrail 5 rotate synchronously. When the escalator or the moving sidewalk encounters a higher lifting height or a larger horizontal span, multiple escalators are needed to transport passengers. The segmented handrail 5 of the escalator can realize the function of multiple escalators for one escalator or moving sidewalk, improving the transportation efficiency of passengers riding the escalator. At the same time, the dragging device 4 is provided with a brake structure. When the escalator is powered off or the chain is broken, the dragging device 4 will be braked urgently. The steps and the handrail 5 are braked simultaneously to ensure the safety of passengers. The main driving part 2 is provided with one or two driving motors, which make the chain move circularly.

[0031] Referring to Figure 3 and Figure 4 , the dragging device 4 is provided with a shaft body. The driving wheel 420 and the driving gear disc 422 are symmetrically arranged at both ends of the shaft body. The driving wheel 420 and the driving gear disc 422 are coaxially fixed at one end of the shaft body. The brake structure is used to lock the driving gear disc 422. The driving wheel 420 is used to drag the handrail 5. The driving gear disc 422 is used to be in transmission connection with the chain 10. The driving gear disc 422 and the driving wheel 420 are separately arranged. The driving gear disc 422 and the driving wheel 420 are coaxially provided with through circular grooves with the same diameter. The shaft body is provided with a plurality of threaded holes at the end. The shaft body passes through the driving gear disc 422 and the driving wheel 420 in sequence at one end. The driving wheel 420 is provided with a fixed stop block outside. The fixed stop block is provided with a plurality of through holes corresponding to the threaded holes. A plurality of locking screws are arranged on the through holes and are in threaded connection with the threaded holes. The brake structure includes a power member 430 fixedly arranged on the shaft body and a brake member 423. The power member 430 is provided with a connecting rod 39. The connecting rod 39 limits the brake member 423. Referring toFigure 6 The brake member 423 comprises left-right symmetrical embracing hoops, referring to Figure 4 The lower part of the embracing hoop is connected with the first bolt 23 and the second bolt 24, and the upper part of the embracing hoop is connected with the third bolt 25, the embracing hoop is rotationally connected to the shaft body through the first bolt 23, and springs are sleeved between the second bolt 24 and the outer wall of the embracing hoop and between the third bolt 25 and the outer wall of the embracing hoop, referring to Figure 5 The driving gear disc 422 is provided with a brake force acting shaft 421, the embracing hoop is used for embracing the brake force acting shaft 421, the end of the connecting rod 39 is provided with a conical table 31, the embracing hoop is provided with a conical groove 28 corresponding to the position of the conical table 31, the connecting rod 39 is slidingly connected in the conical groove 28, and the upper part of the embracing hoop is provided with a connecting sliding groove 22, the connecting sliding groove 22 is provided with a fourth bolt 21 connecting the embracing hoop and the shaft body. The brake force acting shaft 421 is provided with a stop table 27 close to one end of the shaft body, and the embracing hoop is arranged between the stop table 27 and the end surface of the driving gear disc 422.

[0032] Referring to Figure 7 The power member 430 comprises a guide sleeve 35, the guide sleeve 35 is provided with a magnetic isolation ring 37, the magnetic isolation ring 37 is symmetrically provided with a reset spring 34 on both sides, the reset spring 34 is connected with a permanent magnet 38, the guide sleeve 35 is provided with a sliding bearing 32, the permanent magnet 38 is sleeved in the sliding bearing 32, a coil 36 is arranged around the permanent magnet 38 on the outer side of the guide sleeve 35, the connecting rod 39 is fixedly connected with one end of the permanent magnet 38, and the guide sleeve 35 is provided with a stop piece 33 close to the connecting rod 39.

[0033] The split setting purpose of the present application is to facilitate the debugging of the initial position of the driving gear disc 422 on both sides during actual installation. Meanwhile, if the driving gear disc 422 is broken, the split setting of the present application can facilitate the disassembly and maintenance of the driving gear disc 422.

[0034] The working process of the embodiment is as follows: the main control unit 1 executes a control command, the main control unit 1 controls the opening of the brake structure respectively, at this time, the coil 36 is electrified, the connecting rod is contracted, the conical table 31 is retracted into the conical groove 28, at this time, the embracing hoop is opened, when the towing device is normal, the driving motor brake device is executed until all the towing devices normally operate. When braking is needed, the coil 36 is de-energized, the connecting rod is stretched under the action of the reset spring, the conical table 31 is away from the conical groove 28, and the spring on the outer side of the embracing hoop is reset, so that the embracing hoop tightly embraces the brake force acting shaft 421, and the driving gear disc stops rotating.

[0035] The application is according to the chain to drive multiple dragging devices and brake structure, further make the handrail belt synchronous operation; according to the reaction force of multiple dragging devices and brake structure to chain braking, further segmented dispersion chain brake force, meet the sudden risk further prevent the escalator acceleration down or reverse, increase the escalator safety reliability; according to the different handrail belt segmented exit position, further realize the passenger according to the actual demand for entry and exit, further improve the equipment utilization, reduce the cost of multiple equipment; according to the dispersion layout of multiple dragging devices and brake structure, further reduce the traditional equipment upper equipment space, further reduce the installation manufacturing difficulty of equipment.

[0036] Reference Figure 8 The master control unit 1 is provided with the following control logic:

[0037] S1, the master control unit 1 judges whether the main drive part 2 and the dragging device 4 are all in normal state, if yes, proceed to S2, if not, feedback equipment exception;

[0038] S2, the first speed sensor 8 detects the output speed of the main drive part 2, and the second speed sensor 9 detects the running speed of the handrail belt 5;

[0039] S3, the master control unit 1 judges whether the output speed of the main drive part 2 and the running speed of the handrail belt 5 are all in the set target threshold range, if yes, return to S2; if not, the master control unit 1 controls the brake structure to lock operation, and feedback equipment exception. In this embodiment, the locking operation is to power off the electromagnet, that is, to power off the coil.

Claims

1. A safety escalator with segmented and synchronized handrails, characterized in that, The escalator includes a main body (6), and several segmented handrails (5) are provided on both sides of the main body (6). The main body (6) is provided with a main drive unit (2) and a chain (10). Each handrail (5) is provided with at least one dragging device (4). The main drive unit (2) drives the dragging device (4) to rotate through the chain (10). The dragging device (4) drives the handrail (5) to rotate. The dragging device (4) is provided with a braking structure for locking the dragging device (4). The dragging device (4) is provided with a shaft, and a drive wheel (420) and a drive gear (422) are symmetrically provided at both ends of the shaft. The drive wheel (420) and the drive gear (422) are coaxially fixed at one end of the shaft. The braking structure includes a power component (430) and a brake component (423) fixedly mounted on the shaft. The power component (430) is provided with a connecting rod (39), which limits the brake component (423). The brake component (423) includes left and right symmetrical clamping rings. The lower part of the clamping ring is connected to a first bolt (23) and a second bolt (24), and the upper part of the clamping ring is connected to a third bolt (25).

2. The safety escalator with segmented and synchronized handrails according to claim 1, characterized in that, The braking structure is used to lock the drive gear (422), the drive wheel (420) is used to drag the handrail belt (5), and the drive gear (422) is used to drive the chain (10).

3. A safety escalator with segmented and synchronized handrails according to claim 2, characterized in that, The clamping hoop is rotatably connected to the shaft by the first bolt (23). A spring is sleeved between the second bolt (24) and the outer wall of the clamping hoop and between the third bolt (25) and the outer wall of the clamping hoop. The drive gear (422) is provided with a braking force shaft (421). The clamping hoop is used to clamp the braking force shaft (421). The end of the connecting rod (39) is provided with a truncated cone (31). The clamping hoop is provided with a conical groove (28) at the position corresponding to the truncated cone (31). The connecting rod (39) is slidably connected in the conical groove (28). The upper part of the clamping hoop is provided with a connecting groove (22). The fourth bolt (21) connecting the clamping hoop and the shaft is provided in the connecting groove (22).

4. A safety escalator with segmented and synchronized handrails according to claim 3, characterized in that, The power component (430) includes a guide sleeve (35), a magnetic isolation ring (37) is provided inside the guide sleeve (35), and return springs (34) are symmetrically provided on both sides of the magnetic isolation ring (37). The return springs (34) are connected to permanent magnets (38). A sliding bearing (32) is provided inside the guide sleeve (35), and the permanent magnets (38) are sleeved inside the sliding bearings (32). A coil (36) is provided around the permanent magnets (38) on the outer side of the guide sleeve (35). The connecting rod (39) is fixedly connected to one end of the permanent magnets (38). A baffle (33) is provided on the side of the guide sleeve (35) near the connecting rod (39).

5. A safety escalator with segmented and synchronized handrails according to claim 3, characterized in that, The braking force actuation shaft (421) has a stop (27) at one end near the shaft body, and the clamping hoop is located between the stop (27) and the end face of the drive gear (422).

6. A safety escalator with segmented and synchronized handrails as described in claim 3 or 5, characterized in that, The drive gear (422) and drive wheel (420) are separately arranged. The drive gear (422) and drive wheel (420) are coaxially provided with a through circular groove of the same diameter. The end of the shaft is provided with several threaded holes. One end of the shaft passes through the drive gear (422) and drive wheel (420) in sequence. The outer side of the drive wheel (420) is provided with a fixed stop block. The fixed stop block is provided with several through holes corresponding to the threaded holes. Several locking screws are provided on the through holes and threadedly connected to the threaded holes.

7. A safety escalator with segmented and synchronized handrails according to any one of claims 1-5, characterized in that, The escalator body (6) is provided with a second speed sensor (9) for detecting the speed of the handrail belt (5), a first speed sensor (8) for detecting the output speed of the main drive unit (2), and a main control unit (1). The main control unit (1) is electrically connected to the first speed sensor (8), the second speed sensor (9), and the braking structure.

8. A safety escalator with segmented and synchronized handrails according to claim 7, characterized in that, The main control unit (1) is equipped with the following control logic: S1, the main control unit (1) determines whether the main drive unit (2) and the drive device (4) are all in normal condition. If yes, proceed to S2. If no, report the equipment abnormality. S2, the first speed sensor (8) detects the output speed of the main drive unit (2), and the second speed sensor (9) detects the running speed of the handrail belt (5); S3, the main control unit (1) determines whether the output speed of the main drive unit (2) and the running speed of the detection handrail belt (5) are both within the set target threshold range. If yes, return to S2; if no, the main control unit (1) controls the braking structure to perform a locking operation and reports the equipment abnormality.

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