Automatic adjustment device and method for handrail

Abstract

The present invention relates to an automatic adjustment device and adjustment method for a handrail. It solves the problems in the prior art. It includes a tensioning wheel body rotatably arranged on a connecting plate frame, the lower end of the tensioning wheel body is abutted against an escalator handrail, and a force sensor is provided at the bottom of the connecting plate frame. The bottom of the connecting plate frame is connected to a movable lifting bracket mechanism that is symmetrically arranged and can control the lifting and lowering of the connecting plate frame, and a lifting drive component that can drive the movable lifting bracket mechanism to swing and thus change the height is plugged into the middle of the movable lifting bracket mechanism. The movable lifting bracket mechanism is respectively provided with symmetrically arranged linkage support components on both sides, and the linkage support components on both sides are connected by an elastic damping structure that is transversely penetrated on the movable lifting bracket mechanism. The lifting drive component is connected to the lifting control mechanism, and the lifting control mechanism is connected to the force sensor signal. The advantages of the present invention are that it can adaptively adjust the clamping force and has a good use effect.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical equipment, and in particular to an automatic adjustment device and an adjustment method for an armrest belt. Background Art

[0002] Escalators are a very convenient form of elevator that is common in our daily lives. They are widely used in various large shopping malls, activity centers and other places with a large number of people. The handrails are important components for passengers to hold on to and keep their bodies parallel when riding the escalator, preventing passengers from falling on the escalator. At present, the handrails of escalators are mainly guided by two structures, guide blocks and rollers, during non-working hours. During the use of the escalator, the guide blocks become thinner due to long-term friction with the handrails, and eventually the handrails are separated from the guide blocks. The rollers themselves only support the handrails and have no guiding function. In addition, the handrails will gradually stretch during use, which will eventually cause the handrails to slip and move, affecting the normal operation of the handrails. In addition, the handrails are usually tensioned by the pressure of the tensioning pulley to avoid looseness during circumferential rotation. Therefore, the pressure between the tensioning pulley and the handrail usually needs to be kept constant. However, when the handrail is subjected to supporting pressure, it usually becomes tight, which easily changes the pressure value between the tensioning pulley and the handrail. Long-term use can easily cause the handrails to become loose or even damaged. Traditional clamping force adjustment devices are difficult to meet the adaptive adjustment between the handrails and the tensioning pulleys, and the use effect is poor. In addition, the operation method is complicated and the degree of automation is low, which is not conducive to widespread promotion and use.

[0003] In order to address the shortcomings of the existing technology, people have conducted long-term exploration and proposed various solutions. For example, a Chinese patent document discloses an integrated handrail guiding and tensioning device and a tensioning adjustment and guiding method [CN202011510324.1], which includes a base for fixing, a guide block bracket, and a guide assembly for serving as an escalator handrail guide; the base is adjustably connected to the truss upper chord; the guide block bracket is connected to the base; the bottom and side of the guide assembly are provided with rolling parts, and the guide assembly is arranged on the inner side of the handrail; the guide assembly is adjustably connected to the guide block bracket to adjust the height of the guide assembly to adjust the tension of the handrail; when working, the guide assembly is connected to the inner end face and lip of the handrail through the rolling part to guide the handrail.

[0004] The above solution has solved to a certain extent the problem in the prior art that escalator handrails are prone to slipping and moving after long-term use. However, the solution still has many shortcomings, such as: it is difficult to adaptively adjust the clamping force between the handrail and the tensioning wheel, the use effect is poor, and the operation method is complicated and the degree of automation is low. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic adjustment device for an armrest belt in view of the above problems.

[0006] The purpose of the present invention is to provide a method for automatically adjusting an armrest belt in response to the above problems.

[0007] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: an automatic adjustment device for a handrail, comprising a tensioning wheel body rotatably arranged on a connecting plate frame, the lower end of the tensioning wheel body abuts against an escalator handrail, and a force sensor is provided at the bottom of the connecting plate frame, the bottom of the connecting plate frame is connected to a movable lifting bracket mechanism which is symmetrically arranged and can control the lifting and lowering of the connecting plate frame, and the middle of the movable lifting bracket mechanism is plugged in with a lifting drive assembly which can drive the movable lifting bracket mechanism to swing and thus change the height, symmetrically arranged linkage support assemblies are respectively provided on both sides of the movable lifting bracket mechanism, and the linkage support assemblies on both sides are connected by an elastic damping structure transversely penetrated on the movable lifting bracket mechanism, the lifting drive assembly is connected to the lifting control mechanism, and the lifting control mechanism is connected to the force sensor signal.

[0008] By arranging a force sensor at the bottom of the connecting plate frame, when the escalator handrail is tightened and the tensioning wheel body rises, the pressure between the escalator handrail and the tensioning wheel body increases, and the connecting plate frame connected to the tensioning wheel body rises synchronously, thereby pulling the force sensor. When the pulling force value detected by the pulling force sensor is out of the preset range, the lifting drive assembly is started through the lifting control mechanism to make the movable lifting bracket mechanism rise, thereby adjusting the pressure between the escalator handrail and the tensioning wheel body to return to the preset value, ensuring pressure balance, achieving the purpose of adaptive adjustment, and having good use effect.

[0009] In the above-mentioned automatic adjustment device for an armrest belt, the movable lifting bracket mechanism includes an upper mounting seat and a lower mounting seat that are symmetrically arranged downwardly, and a movable bracket structure that is symmetrically arranged left and right is provided between the upper mounting seat and the lower mounting seat, and the two ends of the movable bracket structure are rotatably connected to the upper mounting seat and the lower mounting seat respectively, and the force sensor is arranged on the upper end surface of the upper mounting seat, and the force sensor is a pull rod type force sensor.

[0010] In the above-mentioned automatic adjustment device of the armrest belt, the movable bracket structure includes an upper movable connection bracket, the upper end of the upper movable connection bracket has an upper movable connection part and the lower end has a lower movable connection part, and the upper movable connection part is movably connected to the upper mounting seat through an upper movable connection shaft, the lower movable connection part is rotatably connected to the lower movable connection bracket through the movable connection middle axis, the upper end of the lower movable connection bracket is provided with a first movable connection part and the lower end has a second movable connection part, and an installation connection cavity is formed between the first movable connection part and the circumferential outer side of the lower movable connection part, and the second movable connection part is rotatably connected to the lower mounting seat through the lower movable connection shaft.

[0011] When the upper movable connection bracket moves, the lower movable connections move synchronously, and the height of the upper mounting seat is controlled by bending movement, with good linkage.

[0012] In the above-mentioned automatic adjustment device for an armrest, the lifting drive assembly includes a driving motor arranged on one side of any one of the movable support structures, the driving motor is fixed to the middle of the movable support structure through a motor bracket, and the output end of the driving motor is connected to a driving screw through a coupling, the driving screw is passed through the mounting connection cavity in the middle of the two movable support structures, and the driving screw is connected to a linkage screw sleeve at one end away from the coupling and located in one of the mounting connection cavities, the linkage screw sleeve is provided with a linkage block in the circumference, the linkage block is connected to the movable connection center shaft on the corresponding movable support structure, a connecting support is provided at one end of the motor bracket and located in the other mounting connection cavity, and the movable connection center shaft on the corresponding movable support structure is connected to the connecting support. The driving motor uses the driving screw to drive the movable support structure away from one end of the linkage shaft to move, while the other movable support structure performs synchronous passive movement.

[0013] In the above-mentioned automatic adjustment device of the armrest belt, the linkage support assembly includes an outer linkage bracket arranged on the outer wall of the movable bracket structure, an inner linkage bracket symmetrically arranged in the upper and lower directions is provided on the inner side of the movable bracket structure, and a fixed connecting seat is provided on the outer side of the middle part of the movable bracket structure. The outer linkage bracket is rotatably connected to the outer wall of the fixed connecting seat, and a linkage seat is provided on the inner side of the middle part of the movable bracket structure. The outer linkage bracket and the linkage seat are rotatably connected through a rotating connecting shaft, and the ends of the outer linkage bracket and the inner linkage bracket are connected through a damping telescopic rod.

[0014] The arrangement of the inner linkage bracket and the outer linkage bracket can make the movable bracket structure more stable and linear during the lifting process, and can effectively increase the structural strength.

[0015] In the above-mentioned automatic adjustment device of the armrest, the elastic damping structure includes a telescopic limit link arranged on an external linkage bracket, a top pressure spring is sleeved on the circumferential outer side of the telescopic limit link, and a linkage sleeve is embedded in the inner linkage bracket, the end of the telescopic limit link is inserted into the linkage sleeve, and the end of the linkage sleeve away from the telescopic limit rod is connected to the external linkage bracket through a movable link; the lifting control mechanism includes a PCB circuit board, a control module is provided on the PCB circuit board, and the control module and the force sensor are connected through a wireless module or cable, the PCB circuit board is provided with a drive module connected to the control module, and the drive module is electrically connected to the lifting drive assembly and performs signal transmission.

[0016] The setting of the elastic damping structure can limit the inward and outward convex formation of the movable support structure to prevent excessive movement.

[0017] According to the above-mentioned automatic adjustment device for an armrest belt, a method for automatic adjustment of an armrest belt is provided, and the method comprises the following steps:

[0018] S1. Preset the tension value range of the connecting plate frame when the tension wheel body and the escalator handrail are relatively stable;

[0019] S2, detecting the tension of the connecting plate frame 1 through a force sensor;

[0020] S3, the force sensor sends the tension data to the control module;

[0021] S4. comparing the tension value range set in advance with the tension measured by the force sensor;

[0022] S5. When the detected tension value exceeds the set value, the drive motor is started to retract the movable bracket structure and lift the connecting plate frame, so that the tensioning wheel body and the escalator handrail are in a relatively stable state again.

[0023] In step S1, the principle of tension detection of the connecting plate frame is: when the escalator handrail is under force, the bottom of the tensioning wheel body is forced to move upward and drive the connecting plate frame to move synchronously. When the bottom of the connecting plate frame moves, the force sensor is pulled, thereby detecting the tension of the connecting plate frame.

[0024] Wherein step S5 is specifically divided into the following steps:

[0025] S51, the preset tension range is P1-P2, and the tension value detected by the force sensor is P3;

[0026] S52, when P1≥P3≥P2, the drive motor does not start, and the original height of the movable support structure is maintained;

[0027] S53. When P3≥P1, the control module sends a driving signal to the driving module, the driving module starts the driving motor, and uses the driving screw to pull the middle part of one of the movable bracket structures toward the inside, so that the bottom of the connecting plate frame is stressed and rises, and the tensioning wheel body connected to the connecting plate frame rises synchronously and presses on the escalator handrail until the tension value P detected by the force sensor returns to the preset tension range PP, and then the driving motor is turned off.

[0028] S54. When P1≥P3, start the drive motor and use the drive screw to pull the middle part of one of the movable bracket structures to move outward, so that the bottom of the connecting plate frame is stressed and descends, and the tensioning wheel body connected to the connecting plate frame 1 descends synchronously and presses on the escalator handrail until the force sensor detects that the tension value P3 returns to the preset tension range of P1-P2, and then shuts down the drive motor.

[0029] In the above-mentioned method for automatic adjustment of the handrail belt, the upper movable connecting bracket and the lower movable connecting bracket in the movable bracket structure move synchronously. When the movable bracket structure away from the driving motor is driven to move by the driving screw, the other movable bracket structure performs synchronous passive movement due to the setting of the upper mounting seat and the lower mounting seat. During the movement of the movable bracket structure, the elastic damping structure synchronously expands and contracts, and the linkage support assembly moves synchronously with the corresponding upper movable connecting bracket and the lower movable connecting bracket.

[0030] The method presets a force sensor at the bottom of the connecting plate frame. When the connecting plate frame moves, the tension value detected by the force sensor changes. The preset tension value is compared with the detected tension value. If the detected tension value is not within the preset range, it indicates that the pressure between the tensioning wheel body and the escalator handrail is unbalanced. At this time, the lifting control mechanism is used to control the movable bracket structure to lift and lower according to the actual situation to ensure that the tension value of the connecting plate frame is restored to the preset value range, so that the clamping force between the tensioning wheel body connected to the connecting plate frame and the escalator handrail can always be kept constant. It not only has a high degree of automation but also is easy to operate.

[0031] Compared with the existing technology, the advantages of the present invention are: the change in the tension value of the connecting plate frame is detected in real time by the force sensor, so as to judge whether the pressure between the tensioning wheel body and the escalator handrail belt changes, and the tension value range of the connecting plate frame under the normal compression force state is preset. When the tension value generated by the displacement of the connecting plate frame is out of the preset tension value range, the movable bracket structure is pulled up and down by the driving motor and the driving screw rod to adjust the position of the connecting plate frame, thereby realizing the adjustment of the pressure between the tensioning wheel body and the escalator handrail belt. It not only has a high degree of automation, but also has a good linkage effect and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 It is a schematic diagram of the movable bracket structure in the present invention;

[0034] Figure 3 It is a schematic diagram of the local structure of the present invention;

[0035] Figure 4 It is a schematic structural diagram of the linkage support assembly of the present invention;

[0036] Figure 5 It is an exploded view of the lifting drive assembly in the present invention;

[0037] Figure 6 It is a local structural connection block diagram of the present invention;

[0038] Figure 7is a flow chart of the method steps in the present invention;

[0039] In the figure: connecting plate frame 1, tensioning wheel body 11, escalator handrail 12, movable lifting bracket mechanism 2, upper mounting seat 21, lower mounting seat 22, lifting drive assembly 3, drive motor 31, motor bracket 32, coupling 33, drive screw 34, linkage block 35, connecting support 36, linkage screw sleeve 37, linkage support assembly 4, outer linkage bracket 41, inner linkage bracket 42, fixed connecting seat 43, linkage seat 44, rotating connecting shaft 45, damping telescopic rod 46, elastic damping structure 5, telescopic limit link Rod 51, pressure spring 52, linkage sleeve 53, movable connecting rod 54, lifting control mechanism 6, force sensor 61, PCB circuit board 62, control module 63, drive module 64, movable bracket structure 7, upper movable connection bracket 71, upper movable connection part 711, lower movable connection part 712, upper movable connection shaft 713, movable connection middle shaft 714, lower movable connection bracket 72, first movable connection part 721, second movable connection part 722, lower movable connection shaft 723, installation connection cavity 73. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] like Figure 1-3 As shown, an automatic adjustment device for a handrail belt comprises a tensioning wheel body 11 rotatably arranged on a connecting plate frame 1, the lower end of the tensioning wheel body 11 is abutted against an escalator handrail belt 12, and a force sensor 61 is provided at the bottom of the connecting plate frame 1, and a movable lifting bracket mechanism 2 which is symmetrically arranged and can control the lifting and lowering of the connecting plate frame 1 is connected to the bottom of the connecting plate frame 1, and a lifting drive component 3 which can drive the movable lifting bracket mechanism 2 to swing and thus change the height is plugged in and connected to the middle part of the movable lifting bracket mechanism 2, and symmetrically arranged linkage support components 4 are respectively provided on both sides of the movable lifting bracket mechanism 2, and the linkage support components 4 on both sides are connected by an elastic damping structure 5 which is transversely penetrated on the movable lifting bracket mechanism 2, the lifting drive component 3 is connected to the lifting control mechanism 6, and the lifting control mechanism 6 is connected to the force sensor 61 signal.

[0042] During use, the force sensor 61 is used to detect the tension of the connecting plate frame 1. When the escalator handrail belt 12 is subjected to force, it will be in a tensioned state, thereby increasing the pressure between it and the tensioning wheel body 11, and the tensioning wheel body 11 is displaced by the force, thereby driving the connecting plate frame 1 connected to it to displace. When the connecting plate frame 1 is displaced, the tension value detected by the force sensor 61 changes. At this time, the lifting drive component 3 is started through the lifting control mechanism 6. The lifting drive component 3 causes the movable lifting bracket mechanism 2 to perform a lifting movement to change the height of the connecting plate frame 1, so that the pressure between the tensioning wheel body 11 and the escalator handrail belt 12 can be restored to the initial state.

[0043] like Figure 2 As shown, the movable lifting bracket mechanism 2 includes an upper mounting seat 21 and a lower mounting seat 22 which are symmetrically arranged downwardly, and a movable bracket structure 7 which is symmetrically arranged left and right is provided between the upper mounting seat 21 and the lower mounting seat 22, and the two ends of the movable bracket structure 7 are rotatably connected to the upper mounting seat 21 and the lower mounting seat 22 respectively, and a force sensor 61 is provided on the upper end surface of the upper mounting seat 21, and the force sensor 61 is a pull rod type force sensor.

[0044] The movable support structures 7 on both sides move synchronously, one of the movable support structures 7 is driven by the lifting drive assembly 3 to retract and bulge, thereby changing the height of the upper mounting seat 21, and the lower mounting seat 22 remains stationary, while the other movable support structure 7 is passively moved by the lifting and lowering of the upper mounting seat 21.

[0045] Among them, the movable bracket structure 7 includes an upper movable connection bracket 71, the upper end of the upper movable connection bracket 71 has an upper movable connection part 711 and the lower end has a lower movable connection part 712, and the upper movable connection part 711 is movably connected to the upper mounting seat 21 through an upper movable connection shaft 713, and the lower movable connection part 712 is rotatably connected to the lower movable connection bracket 72 through a movable connection middle shaft 714, and the upper end of the lower movable connection bracket 72 is provided with a first movable connection part 721 and the lower end has a second movable connection part 722, and an installation connection cavity 73 is formed between the first movable connection part 721 and the circumferential outer side of the lower movable connection part 712, and the second movable connection part 722 is rotatably connected to the lower mounting seat 22 through a lower movable connection shaft 723.

[0046] The upper movable connection bracket 71 and the lower movable connection bracket 72 move through each other, and the mounting connection cavity 73 is used to mount the driving motor 31 and the linkage block 35 .

[0047] like Figure 5-6As shown, the lifting drive assembly 3 includes a driving motor 31 arranged on one side of any movable support structure 7, the driving motor 31 is fixed to the middle of the movable support structure 7 through a motor bracket 32, and the output end of the driving motor 31 is connected to a driving screw 34 through a coupling 33, the driving screw 34 is passed through the mounting and connecting cavity 73 in the middle of the two movable support structures 7, and the driving screw is away from one end of the coupling 33 and is located in one of the mounting and connecting cavities 73 to connect the linkage nut 37, the linkage nut 37 is circumferentially provided with a linkage block 35, the linkage block 35 is connected to the movable connection center shaft 714 on the corresponding movable support structure 7, and a connecting support 36 is provided at one end of the motor bracket 32 ​​and is located in the other mounting and connecting cavity 73, and the movable connection center shaft 714 on the corresponding movable support structure 7 is connected to the connecting support 36.

[0048] The driving motor 31 rotates the driving screw 34, and the linkage screw sleeve 37 is threadedly connected to the driving screw 34. When the driving screw 34 rotates, the linkage screw sleeve 37 moves passively. When the linkage screw sleeve 37 moves, the linkage block 35 connected to the linkage screw sleeve 37 moves synchronously and drives the movable support structure 7 to move through the movable connection center shaft 714.

[0049] like Figure 4 As shown, the linkage support assembly 4 includes an outer linkage bracket 41 arranged on the outer wall of the movable bracket structure 7, an inner linkage bracket 42 symmetrically arranged in the upper and lower directions is provided on the inner side of the movable bracket structure 7, and a fixed connecting seat 43 is provided on the outer side of the middle of the movable bracket structure 7. The outer linkage bracket 41 is rotatably connected to the outer wall of the fixed connecting seat 43, and a linkage seat 44 is provided on the inner side of the middle of the movable bracket structure 7. The outer linkage bracket 41 and the linkage seat 44 are rotatably connected through a rotating connecting shaft 45, and the ends of the outer linkage bracket 41 and the inner linkage bracket 42 are connected through a damping telescopic rod 46.

[0050] The outer linkage bracket 41 and the inner linkage bracket 42 move synchronously with the movable support structure 7 to improve the movement rigidity and movement stability of the movable support structure 7 and ensure that the movable support structure 7 remains stable when the movable support structure 7 stops moving.

[0051] Among them, the elastic damping structure 5 includes a telescopic limit link 51 arranged on the outer linkage bracket 41, and a top pressure spring 52 is sleeved on the outer side of the telescopic limit link 51, and a linkage sleeve 53 is embedded in the inner linkage bracket 42. The end of the telescopic limit link 51 is inserted into the linkage sleeve 53, and the end of the linkage sleeve 53 away from the telescopic limit rod is connected to the outer linkage bracket 41 through a movable link 54; the lifting control mechanism 6 includes a PCB circuit board 62, and a control module 63 is provided on the PCB circuit board 62, and the control module 63 and the force sensor 61 are connected through a wireless module or cable. The PCB circuit board 62 is provided with a drive module 64 connected to the control module 63, and the drive module 64 is electrically connected to the lifting drive component 3 and performs signal transmission.

[0052] The elastic damping structure 5 is used to limit the inward and outward movement of the movable support structure 7 to prevent the movable support structure 7 from over-moving and bending in the opposite direction, and to provide motion damping to prevent the connecting plate frame 1 from rising or falling suddenly due to excessive movement.

[0053] like Figure 7 As shown, a method for automatically adjusting an armrest belt comprises the following steps:

[0054] S1, preset tension value range of the connecting plate frame 1 when the tension wheel body 11 and the escalator handrail belt 12 are relatively stable;

[0055] S2, detecting the tension of the connecting plate frame 1 through the force sensor 61;

[0056] S3, the force sensor 61 sends the tension data to the control module 63;

[0057] S4, comparing the tension value range set in advance with the tension measured by the force sensor 61;

[0058] S5. When the detected tension value exceeds the set value, the drive motor 31 is started to retract the movable support structure 7 and lift the connecting plate frame 1, so that the tensioning wheel body 11 and the escalator handrail belt 12 are in a relatively stable state again.

[0059] In step S2, the principle of detecting the tension of the connecting plate frame 1 is as follows: when the escalator handrail 12 is subjected to force, the bottom of the tensioning wheel body 11 is forced to move upward and drive the connecting plate frame 1 to move synchronously. When the bottom of the connecting plate frame 1 moves, the force sensor 61 is pulled, thereby detecting the tension of the connecting plate frame 1. When the escalator handrail 12 is subjected to force, it becomes taut, and the pressure between the tensioning wheel body 11 and the escalator handrail 12 increases. Although the bottom of the tensioning wheel body 11 is forced to move upward, the pressure exerted by the tensioning wheel body 11 on the escalator handrail 12 is still greater than when the escalator handrail 12 is not subjected to force.

[0060] Step S5 is specifically divided into the following steps:

[0061] S51, the preset tension range is P1-P2, and the tension value detected by the force sensor 61 is P3;

[0062] S52, when P1≥P3≥P2, the driving motor 31 is not started, and the original height of the movable support structure 7 is maintained;

[0063] S53. When P3 ≥ P1, the control module 63 sends a drive signal to the drive module 64. The drive module 64 starts the drive motor 31 and uses the drive screw 34 to pull the middle part of one of the movable support structures 7 toward the inside, so that the bottom of the connecting plate frame 1 is stressed and rises. The tensioning wheel body 11 connected to the connecting plate frame 1 rises synchronously and presses against the escalator handrail 12. When the tension value P3 detected by the force sensor 61 returns to the preset tension range of P1-P2, the drive motor 31 is turned off.

[0064] S54. When P1≥P3, start the drive motor 31 and use the drive screw 34 to pull the middle part of one of the movable support structures 7 outward, so that the bottom of the connecting plate frame 1 is stressed and descends, and the tensioning wheel body 11 connected to the connecting plate frame 1 descends synchronously and presses on the escalator handrail 12 until the force sensor 61 detects that the tension value P3 returns to the preset tension range of P1-P2, and then shuts down the drive motor 31.

[0065] When P3≥P1, it means that the clamping force is too large, and when P1≥P3, it means that the escalator handrail 12 is loose and falls, and the clamping force is too small. When the clamping force is too small, the connecting plate frame 1 is driven to descend, so that the tensioning wheel body 11 is re-tightened on the escalator handrail 12, and when the connecting plate frame 1 descends, the tensioning wheel body 11 and the force sensor 61 descend synchronously, and the descent of the tensioning wheel body 11 is blocked by the escalator handrail 12, and the connecting plate frame 1 is continuously pulled down, increasing the clamping force, and making the tension of the connecting plate frame 1 detected by the force sensor 6 within the preset tension value range, thereby realizing the recovery of the clamping force; when the clamping force is too large, the connecting plate frame 1 is driven to rise, and the tensioning wheel body 11 and the sensor 61 rise synchronously. When the tension of the connecting plate frame 1 detected by the force sensor 6 returns to the preset tension value range, the movement is stopped. At this time, the pressure of the tensioning wheel body 11 on the escalator handrail 12 returns to its initial state.

[0066] Among them, the upper movable connecting bracket 71 and the lower movable connecting bracket 72 in the movable bracket structure 7 move synchronously. When the movable bracket structure 7 away from the driving motor 31 is driven to move by the driving screw, the other movable bracket structure 7 performs synchronous passive movement due to the setting of the upper mounting seat 21 and the lower mounting seat 22. During the movement of the movable bracket structure 7, the elastic damping structure 5 is synchronously extended and retracted, and the linkage support assembly 4 moves synchronously with the corresponding upper movable connecting bracket 71 and the lower movable connecting bracket 72.

[0067] To sum up, the principle of this embodiment is that: in the initial state, the tension value range of the connecting plate frame 1 detected by the force sensor 6 is preset according to the pressure range of the tensioning wheel body 11 pressing on the escalator handrail belt 12. When the escalator handrail belt 12 is tightened when the force is applied, causing the tensioning wheel body 11 and the connecting plate frame 1 to rise synchronously, its pressure value increases, and the tension of the connecting plate frame 1 detected by the force sensor 6 becomes larger. At this time, the driving motor 61 is used to move the driving screw 64, thereby driving the movable support structure 7 to retract and raise the height of the upper connecting seat 21, thereby causing the connecting plate frame 1 to drive the tensioning wheel body 11 to rise, until the tension value of the connecting plate frame 1 detected by the force sensor 6 returns to the preset value range, and then stops moving. At this time, the pressure of the tensioning wheel body 11 on the escalator handrail belt 12 returns to the initial state.

[0068] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

[0069] Although this article uses more connecting plate frame 1, tensioning wheel body 11, escalator handrail 12, movable lifting bracket mechanism 2, upper mounting seat 21, lower mounting seat 22, lifting drive assembly 3, driving motor 31, motor bracket 32, coupling 33, driving screw 34, linkage block 35, connecting support 36, linkage screw sleeve 37, linkage support assembly 4, outer linkage bracket 41, inner linkage bracket 42, fixed connecting seat 43, linkage seat 44, rotating connecting shaft 45, damping telescopic rod 46, elastic damping structure 5, telescopic limit connecting rod 51, top pressure The terms spring 52, linkage sleeve 53, movable link 54, lifting control mechanism 6, force sensor 61, PCB circuit board 62, control module 63, drive module 64, movable support structure 7, upper movable connection bracket 71, upper movable connection part 711, lower movable connection part 712, upper movable connection shaft 713, movable connection middle shaft 714, lower movable connection bracket 72, first movable connection part 721, second movable connection part 722, lower movable connection shaft 723, and mounting connection cavity 73 are used, but the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. An automatic handrail adjustment device, comprising a tensioning wheel body (11) rotatably arranged on a connecting plate frame (1), wherein the lower end of the tensioning wheel body (11) is provided against an escalator handrail (12), and a force sensor (61) is provided at the bottom of the connecting plate frame (1), characterized in that: The bottom of the connecting plate frame (1) is connected to a movable lifting bracket mechanism (2) which is symmetrically arranged and can control the lifting of the connecting plate frame (1), and the middle of the movable lifting bracket mechanism (2) is plugged with a lifting drive component (3) which can drive the movable lifting bracket mechanism (2) to swing and thus change the height. The two sides of the movable lifting bracket mechanism (2) are respectively provided with symmetrically arranged linkage support components (4), and the linkage support components (4) on both sides are connected through an elastic damping structure (5) transversely arranged on the movable lifting bracket mechanism (2). The lifting drive component (3) is connected to the lifting control mechanism (6), and the lifting control mechanism (6) is connected to the force sensor (61) signal. The movable lifting bracket mechanism (2) includes an upper mounting seat (21) and a lower mounting seat (22) that are symmetrically arranged downward, and a movable bracket structure (7) that is symmetrically arranged left and right is provided between the upper mounting seat (21) and the lower mounting seat (22), and the two ends of the movable bracket structure (7) are rotatably connected to the upper mounting seat (21) and the lower mounting seat (22), respectively, and the force sensor (61) is provided on the upper end surface of the upper mounting seat (21), and the force sensor (61) is a pull rod type force sensor; the linkage support assembly (4) includes an outer linkage bracket (41) provided on the outer wall of the movable bracket structure (7), and an inner linkage bracket (41) that is symmetrically arranged up and down is provided on the inner side of the movable bracket structure (7). The movable bracket structure (7) is provided with a fixed connection seat (43) on the outer side of the middle part, the outer linkage bracket (41) is rotatably connected to the outer wall of the fixed connection seat (43), and a linkage seat (44) is provided on the inner side of the middle part of the movable bracket structure (7), the outer linkage bracket (41) and the linkage seat (44) are rotatably connected through a rotating connection shaft (45), and the outer linkage bracket (41) and the inner linkage bracket (42) are connected through a damping telescopic rod (46); the elastic damping structure (5) includes a telescopic limit link (51) provided on the outer linkage bracket (41), the telescopic limit link (51) is provided with a top pressure spring (52) on the outer side of the circumference, and the inner linkage bracket (42) is provided with a top pressure spring (52) on the outer side of the circumference. A linkage sleeve (53) is embedded in the frame (42), the end of the telescopic limit link (51) is inserted into the linkage sleeve (53), and the end of the linkage sleeve (53) away from the telescopic limit rod is connected to the external linkage bracket (41) through a movable link (54); the lifting control mechanism (6) includes a PCB circuit board (62), a control module (63) is provided on the PCB circuit board (62), and the control module (63) and the force sensor (61) are connected through a wireless module or a cable, the PCB circuit board (62) is provided with a drive module (64) connected to the control module (63), and the drive module (64) is electrically connected to the lifting drive component (3) and performs signal transmission.

2. The automatic adjustment device for handrails according to claim 1, characterized in that: The movable support structure (7) includes an upper movable connection support (71), the upper end of the upper movable connection support (71) has an upper movable connection part (711) and the lower end has a lower movable connection part (712), and the upper movable connection part (711) is movably connected to the upper mounting seat (21) through an upper movable connection shaft (713), the lower movable connection part (712) is rotatably connected to the lower movable connection support (72) through a movable connection middle shaft (714), the upper end of the lower movable connection support (72) is provided with a first movable connection part (721) and the lower end has a second movable connection part (722), and a mounting connection cavity (73) is formed between the first movable connection part (721) and the circumferential outer side of the lower movable connection part (712), and the second movable connection part (722) is rotatably connected to the lower mounting seat (22) through the lower movable connection shaft (723).

3. The automatic adjustment device for handrails according to claim 2, characterized in that: The lifting drive assembly (3) includes a driving motor (31) arranged on one side of any one of the movable support structures (7), the driving motor (31) is fixed to the middle of the movable support structure (7) through a motor bracket (32), and the output end of the driving motor (31) is connected to a driving screw (34) through a coupling (33), the driving screw (34) is passed through the mounting connection cavity (73) in the middle of the two movable support structures (7), and the driving screw is away from one end of the coupling (33) and is located in one of the mounting connection cavities (73) to connect the linkage screw sleeve (37), the linkage screw sleeve (37) is provided with a linkage block (35) in the circumference, the linkage block (35) is connected to the movable connection center shaft (714) on the corresponding movable support structure (7), one end of the motor bracket (32) is provided and is located in the other mounting connection cavity (73), and the movable connection center shaft (714) on the corresponding movable support structure (7) is connected to the connecting support (36).

4. An automatic handrail adjustment method according to any one of claims 1 to 3, characterized in that: This method comprises the following steps: S1, a preset tension value range of the connecting plate frame (1) when the tension wheel body (11) and the escalator handrail belt (12) are relatively stable; S2, detecting the tension of the connecting plate frame (1) through the force sensor (61); S3, the force sensor (61) sends the tension data to the control module (63); S4, comparing the tension value range set in advance with the tension measured by the force sensor (61); S5. When the detected tension value exceeds the set value, the drive motor (31) is started to retract the movable support structure (7) and raise the connecting plate frame (1), so that the tensioning wheel body (11) and the escalator handrail (12) are restored to a relatively stable state.

5. The automatic adjustment method for an armrest according to claim 4, characterized in that: In step S2, the principle of detecting the tension of the connecting plate frame (1) is as follows: when the escalator handrail (12) is subjected to force, the bottom of the tension wheel body (11) is forced to move upward and drive the connecting plate frame (1) to move synchronously; when the bottom of the connecting plate frame (1) moves, the force sensor (61) is pulled, thereby detecting the tension of the connecting plate frame (1).

6. The automatic adjustment method for an armrest according to claim 5, characterized in that: Step S5 is specifically divided into the following steps: S51, the preset tension range is P1-P2, and the tension value detected by the force sensor (61) is P3; S52, when P1≥P3≥P2, the driving motor (31) is not started, and the original height of the movable support structure (7) is maintained; S53, when P3 ≥ P1, the control module (63) sends a drive signal to the drive module (64), the drive module (64) starts the drive motor (31), and uses the drive screw (34) to pull the middle part of one of the movable support structures (7) toward the inside, so that the bottom of the connecting plate frame (1) is stressed and rises, and the tension wheel body (11) connected to the connecting plate frame (1) rises synchronously and presses on the escalator handrail (12), until the tension value P3 detected by the force sensor (61) returns to the preset tension range of P1-P2, and then the drive motor (31) is turned off; S54, when P1≥P3, the drive motor (31) is started, and the middle part of one of the movable support structures (7) is pulled outward by the drive screw (34), so that the bottom of the connecting plate frame (1) is stressed and descends, and the tensioning wheel body (11) connected to the connecting plate frame (1) is synchronously descended and pressed against the escalator handrail (12), until the force sensor (61) detects that the tension value P3 returns to the preset tension range of P1-P2, and then the drive motor (31) is turned off.

7. The automatic adjustment method for an armrest according to claim 6, characterized in that: The upper movable connecting bracket (71) and the lower movable connecting bracket (72) in the movable bracket structure (7) move synchronously. When the movable bracket structure (7) away from the driving motor (31) is driven to move by the driving screw, the other movable bracket structure (7) moves synchronously due to the setting of the upper mounting seat (21) and the lower mounting seat (22). During the movement of the movable bracket structure (7), the elastic damping structure (5) is synchronously extended and retracted, and the linkage support assembly (4) moves synchronously with the corresponding upper movable connecting bracket (71) and the lower movable connecting bracket (72).

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