CN111636725B - High-stability automatic control movable audience stand - Google Patents

Abstract

The invention discloses a high-stability automatic control movable audience table, which comprises a central control unit, a telescopic audience table group and a driving motor, wherein the heights of the telescopic audience table group are sequentially reduced, the telescopic audience table group comprises a plurality of moving tables and driving tables, the heights of the moving tables are sequentially reduced, at least two groups of driving motors are arranged at the bottom of the driving tables and are used for driving the driving tables to move, the moving tables are connected in a sliding manner, the moving tables are connected with the driving tables in a sliding manner, the moving signal output end of the central control unit is connected with a starting and stopping signal receiving end of the driving motor, folding chairs are arranged on the moving tables and the driving tables, each folding chair comprises a rotatable chair back, and a rotating disc. The invention provides a high-stability automatic control movable audience table which can not be blocked in the expansion and contraction process of the movable audience table.

Description

High-stability automatic control movable audience stand

Technical Field

The invention relates to the field of movable audience stands, in particular to a high-stability automatic control movable audience stand.

Background

The main advantages of the active spectator stands are their high degree of flexibility, security and value. The creative multifunctional conversion concept can meet the requirements of different places, opens up a road for the most challenging public set, enables limited space to be applied infinitely, and brings a brand new concept for stadium seats.

The movable spectator stand can change the field application at any time according to the needs, which is very important, so that a large-investment venue or a venue capable of undertaking different types of competitions and other commercial activities is enabled, the utilization rate of the venue is greatly improved, the closed multifunctional use trend is met, and the movable spectator stand is produced at any time. However, when the movable audience table is extended or retracted, the movable audience table is often stuck due to the large moving distance of each part and uneven resistance distribution.

Chinese patent publication No. CN103206098A, published 2013, month 07, month 17, entitled telescopic mobile bleacher, which comprises a main structure of the telescopic mobile bleacher and a telescopic mobile bleacher guarantee structure, wherein the main structure of the telescopic mobile bleacher comprises a base, a roller, a bed frame, a guide structure, a synchronization tube, a seat, and an emergency support frame, and provides a bleacher main body for audience to watch performance, and the telescopic mobile bleacher guarantee structure comprises an infrared ranging sensor, a controller, a display, a memory, and a voice playing module, and ensures the safe operation of the bleacher main body. But the stability cannot be effectively guaranteed and the disabled cannot safely watch the glasses.

Disclosure of Invention

The invention aims to solve the problem that the telescopic process of the movable audience stand in the prior art is easy to be blocked, and provides a high-stability automatic control movable audience stand which is free from being blocked in the telescopic process of the movable audience stand.

In order to achieve the purpose, the invention adopts the following technical scheme:

the technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a high stability automated control activity spectator stand, including well accuse unit, highly flexible spectator stand group and the driving motor that reduces in proper order, flexible spectator stand group includes a plurality of high mobile stations and the drive table that reduces in proper order, the drive table bottom sets up at least two sets of driving motor, driving motor is used for driving the drive table and removes, sliding connection between each mobile station, sliding connection between mobile station and the drive table, well accuse unit mobile signal output part connects driving motor and opens and stop signal receiving terminal, all be provided with folding chair on mobile station and the drive table, folding chair includes rotatable back of the chair, the back of the chair is equipped with the rolling disc. Driving motor can take the drive station to remove, the drive station area mobile station removes, accomplish stretching out and retracting of mobile station, the back of the chair of folding chair can be folding, save space, make things convenient for the mobile station to stretch out and draw back, the rolling disc at the back of the chair, when the back of the chair is fold condition, the rolling disc is the horizontality, when having the wheelchair on the rolling disc, can rotate the rolling disc, the orientation of adjustment wheelchair, make things convenient for the disabled person to watch the match, the height of mobile station reduces in proper order, the low mobile station can be received into below the high mobile station, reach the effect of saving space.

Preferably, the mobile station comprises a mobile station table board and a plurality of support columns, the folding chair is arranged on the mobile station table board, rollers are arranged at one ends, close to the ground, of the support columns, the other ends of the support columns are fixedly connected with the mobile station table board, locking mechanisms used for locking the rollers are arranged on the support columns, each locking mechanism comprises a locking rod, an electromagnetic telescopic rod, a wedge block and a spring, one end of each locking rod is hinged to one support column, the other end of each locking rod is fixedly connected with one end of each spring, the other end of each spring is connected with the wedge block, each locking rod is hinged to an extension rod of the electromagnetic telescopic rod, a body of the. The electromagnetic telescopic rod is controlled by the controller to lose power, so that the telescopic rod is controlled to stretch out and retract, the locking rod is driven to rotate when the telescopic rod stretches out, the wedge blocks fall onto the ground from the air, the roller wheels are blocked, the roller wheels cannot roll backwards, the safety of the mobile station is guaranteed, the locking rod is driven to rotate when the telescopic rod stretches out, the wedge blocks are lifted up from the ground, the roller wheels can roll, and the mobile station can be nested and retracted.

Preferably, a support guide rail is arranged on one side of each mobile platform top close to the ground, and a support roller corresponding to the guide rail is arranged on one side of each mobile platform top far from the ground. The supporting rollers on the mobile station roll in the adjacent mobile station supporting guide rails higher than the mobile station, so that the guiding function is realized, and the audience stand cannot be blocked in the expansion process.

Preferably, the driving table comprises a driving table top and rollers, the folding chair is arranged on the table top, at least two groups of rollers are arranged at the bottom of the driving table, the driving motor drives the rollers to roll, and supporting rollers are arranged on one side, away from the ground, of the driving table. The driving platform can be ensured to move on the same straight line all the time by at least two groups of driving motors, the driving motors can drive the driving platform to move, and the driving platform drives the mobile platform to move so as to complete the extension and retraction of the mobile platform.

Preferably, a stabilizing guide rail is arranged at one end of each supporting column close to the ground, and a stabilizing roller capable of rolling in the stabilizing guide rail is arranged at one side of the supporting column opposite to the guide rail. The stabilizing guide rail and the supporting guide rail form double-guide-rail matching, so that the mobile station is guaranteed not to be blocked in the telescopic process, the guidance quality is better, and the mobile station can move along the same straight line all the time and cannot deviate.

Preferably, a first through groove and a second through groove are formed in one side, away from the chair back, of the rotating disc, locking grooves are formed in the lower portions of the first through groove and the second through groove, locking half rings are arranged in the locking grooves, a telescopic body for pushing the locking half rings is further arranged on the rotating disc, the extending end of the telescopic body is hinged to the locking half rings, the fixed end of the telescopic body is hinged to the rotating disc, the controlled end of the telescopic body is connected with the telescopic body control end of the central control unit, a rotating motor and a central control unit are arranged on the rotating disc, a rotating motor shaft is fixedly connected with the rotating disc, the motor start-stop signal output end of the central control unit is connected with the rotating motor start-stop signal receiving end, a position sensor is arranged on the rotating disc. The wheel of wheelchair can be moved in it to first through groove and second through groove, because audience stand is higher, first through groove and second through groove can guarantee that the wheel of wheelchair can not deviate from the through groove, make the security better, the flexible body can be under the instruction of central controller the locking semi-ring release locking groove, the locking semi-ring passes the space of the wheel of wheelchair, play the effect of fixed wheelchair, the safety of disabled person when watching the match, the rotation motor is under the control of well accuse unit, can rotate the rolling disc, the wheelchair on the rolling disc rotates along with it, the orientation of adjustment wheelchair, make things convenient for the disabled person to watch the match.

Preferably, the telescopic body is a cylinder, a hydraulic cylinder and an electromagnetic telescopic rod.

Preferably, a first friction roller is arranged at the bottom of the first through groove, the first friction roller is connected with a power input end of a first rotary switch in a shaft mode, and a signal output end of the first rotary switch is connected with an emergency stop signal input end of the central control unit. The wheel of wheelchair is after passing by the locking semi-ring, and the locking semi-ring only passes between the wheelchair wheel spoke, and the rotation of small angle can also be made to the wheel, and at this moment the user makes the wheel rotate, and the wheel will drive the friction roller of frictional contact with it, and the friction roller will rotate to drive first rotary switch and rotate, first rotary switch will arouse the voltage variation of well accuse unit scram signal input end, makes well accuse unit receive the scram signal, thereby carries out the rolling disc scram operation.

Preferably, a second friction roller is arranged at the bottom of the second straight-through groove, a pressure sensor is arranged on the second friction roller, the signal output end of the pressure sensor is connected with the pressure signal input end of the central control unit, the second friction roller is connected with the power input end of a second rotary switch in a shaft mode, and the signal output end of the second rotary switch is connected with the starting signal input end of the central control unit. The wheel of wheelchair is after passing by the locking semi-ring, and the locking semi-ring only passes between the wheelchair wheel spoke, and the wheel can also make the rotation of small angle, and at this moment the user makes the wheel rotate, and the wheel will drive the friction roller of frictional contact with it, and the friction roller will rotate to drive the rotation of second rotary switch, the second rotary switch will cause the voltage variation of well accuse unit power input end, makes well accuse unit receive the power input end, thereby carries out the rolling disc rotation operation.

The invention also comprises a high-stability automatic control active audience stand working method, which adopts the high-stability automatic control active audience stand, and comprises the following steps:

s1: the central control unit sets a pressure time threshold;

s2: after the central control unit receives a pressure signal of the pressure sensor, timing is started, when the pressure time threshold is reached by timing, the control unit controls the telescopic body to act, the locking semi-ring is pushed out of the locking groove, and if the pressure signal received by the central control unit from the pressure sensor disappears in the timing process, timing is finished;

s3: the central control unit divides the rotating disc into a channel state and a working state according to the rotating position of the rotating disc acquired by the position sensor, and in the channel state, after the starting signal input end of the central control unit receives a voltage change signal, the central control unit controls the rotating motor to rotate and rotates the rotating disc from the channel state to the working state;

s4: after the rotating disc is rotated to the channel state from the working state, the control unit controls the telescopic body to act, and the locking semi-rings are retracted into the locking grooves;

s5: when the input end of the emergency stop signal of the central control unit receives the voltage change signal, the central control unit controls the rotating motor to stop rotating. The wheel chair has the advantages that a normal person who watches the match in a gymnasium and a disabled person with disabled legs cannot watch the match conveniently, the wheel chair is troublesome to get from the lower part of the wheel chair to a spectator stand and is easy to cause accidents, when the wheel of the wheel chair presses the friction roller, the wheel of the wheel chair can be locked by the locking semi-ring, meanwhile, a pressure sensor arranged on the friction roller can transmit a single-unit pressure signal, when the central control unit times to reach a pressure time threshold value, the wheel of the wheel chair presses the friction roller for a period of time, the user is judged to want to sit on the wheel chair in sequence, then the telescopic body pushes the locking semi-ring out of the locking groove, the locking semi-ring penetrates through gaps among spokes of the wheel chair, the wheel of the wheel chair is fixed and cannot overturn, the through states of the rotating discs are that the through grooves on the rotating discs are connected in sequence, so, the working state of the rotating disc means that the rotating disc rotates 90 degrees from a passing state, a wheelchair fixed on the rotating disc faces a competition field, a user can conveniently watch a competition, the locking semi-ring can possibly wipe spokes to penetrate through the wheel, the wheel can only rotate in one direction at the moment, and only one signal can be generated.

Therefore, the invention has the following beneficial effects: (1) the driving motor can drive the driving platform to move, the driving platform drives the mobile platform to move, the mobile platform is stretched out and retracted, the chair back of the folding chair can be folded, the space is saved, the mobile platform can stretch out and retract conveniently, the rotating disc on the back of the chair back is in a horizontal state when the chair back is in a folded state, the rotating disc can be rotated when a wheelchair is arranged on the rotating disc, the direction of the wheelchair is adjusted, the disabled can watch the competition conveniently, the heights of the mobile platforms are reduced in sequence, the lower part of the higher mobile platform can be retracted into the lower part of the lower mobile platform, and the space-saving effect is achieved;

(2) the supporting rollers on the mobile station roll in the adjacent mobile station supporting guide rails higher than the mobile station to play a role in guiding, so that the spectator stand cannot be blocked in the process of stretching;

(3) the at least two groups of driving motors can ensure that the driving tables move on the same straight line all the time, the driving motors can drive the driving tables to move, and the driving tables drive the mobile tables to move so as to complete the extension and retraction of the mobile tables;

(4) the stable guide rail and the support guide rail form double-guide rail matching, so that the mobile station is ensured not to be blocked in the telescopic process, has better guidance performance, always moves along the same straight line and does not deviate;

(5) the first straight through groove and the second straight through groove can enable the wheel of the wheelchair to move in the wheelchair, and the spectator stand is higher, so that the first straight through groove and the second straight through groove can ensure that the wheel of the wheelchair cannot deviate from the straight through grooves, the safety is better, the telescopic body can push the locking semi-ring out of the locking groove under the instruction of the central controller, the locking semi-ring penetrates through the gap of the wheel of the wheelchair, the wheelchair fixing effect is achieved, the safety of the disabled in watching a match is protected, the rotating motor can rotate the rotating disc under the control of the central control unit, the wheelchair on the rotating disc rotates along with the rotating disc, the orientation of the wheelchair is adjusted, and the disabled can conveniently watch the match;

(6) after the wheel of the wheelchair is penetrated by the locked semi-ring, the locked semi-ring only penetrates between spokes of the wheel of the wheelchair, the wheel can also rotate in a small angle, at the moment, a user rotates the wheel, the wheel drives a friction roller in friction contact with the wheel, the friction roller rotates to drive a first rotating switch to rotate, the first rotating switch causes the voltage change of an emergency stop signal input end of a central control unit, so that the central control unit receives an emergency stop signal, and the emergency stop operation of a rotating disc is carried out;

(7) after the locked semi-rings penetrate through the wheel of the wheelchair, the locked semi-rings only penetrate through the spokes of the wheel of the wheelchair, the wheel can also rotate in a small angle, at the moment, a user enables the wheel to rotate, the wheel can drive the friction rollers in friction contact with the wheel, the friction rollers can rotate, so that the second rotary switch is driven to rotate, the second rotary switch can cause the voltage change of the power input end of the central control unit, and the central control unit can receive the power input end, so that the rotating operation of the rotating disc is carried out;

(8) the wheel chair has the advantages that a normal person who watches the match in a gymnasium and a disabled person with disabled legs cannot watch the match conveniently, the wheel chair is troublesome to get from the lower part of the wheel chair to a spectator stand and is easy to cause accidents, when the wheel of the wheel chair presses the friction roller, the wheel of the wheel chair can be locked by the locking semi-ring, meanwhile, a pressure sensor arranged on the friction roller can transmit a single-unit pressure signal, when the central control unit times to reach a pressure time threshold value, the wheel of the wheel chair presses the friction roller for a period of time, the user is judged to want to sit on the wheel chair in sequence, then the telescopic body pushes the locking semi-ring out of the locking groove, the locking semi-ring penetrates through gaps among spokes of the wheel chair, the wheel of the wheel chair is fixed and cannot overturn, the through states of the rotating discs are that the through grooves on the rotating discs are connected in sequence, so, the working state of the rotating disc means that the rotating disc rotates 90 degrees from a passing state, a wheelchair fixed on the rotating disc faces a competition field, a user can conveniently watch a competition, the locking semi-ring can possibly wipe spokes to penetrate through the wheel, the wheel can only rotate in one direction at the moment, and only one signal can be generated.

Drawings

FIG. 1 is a schematic view of an expanded structure of the present invention

FIG. 2 is a schematic view of a rotary disk structure of the present invention

FIG. 3 is a top view of a rotatable disk of the present invention

FIG. 4 is a connection block diagram of the present invention

FIG. 5 is a top view of an expanded configuration of the present invention

FIG. 6 is a schematic view of a locking half ring of the present invention when it is not triggered

FIG. 7 is a schematic view of a stowing configuration of the present invention

FIG. 8 is an enlarged view of a portion of a support roller of the present invention

FIG. 9 is a schematic view of the locking mechanism of the present invention

In the figure: 1. the telescopic spectator watching platform set comprises 11 parts of a mobile platform, 111 parts of a mobile platform top, 112 parts of a support column, 113 parts of a roller, 114 parts of a support guide rail, 115 parts of a support roller, 116 parts of a stable guide rail, 117 parts of a railing, 12 parts of a driving platform, 13 parts of a folding chair, 131 parts of a chair back, 2 parts of a central control unit, 3 parts of a driving motor, 4 parts of a rotating disc, 41 parts of a first straight groove, 411 parts of a first friction roller, 412 parts of a first rotating switch, 42 parts of a second straight groove, 421 parts of a second friction roller, 422 parts of a second rotating switch, 422 parts of a pressure sensor, 43 parts of a locking groove, 44 parts of a locking ring, 45 parts of a telescopic body, 46 parts of a rotating motor, 47 parts of a position sensor, 5 parts of a wheel of a wheelchair, 6 parts of a locking mechanism, 61 parts of an electromagnetic telescopic rod, 62.

Detailed Description

The invention is further described with reference to the following detailed description and accompanying drawings.

Example (b): a high-stability automatic control movable audience stand is disclosed, as shown in figures 4 and 5, and comprises a central control unit 2, a telescopic audience stand group 1 and a driving motor 3, wherein the heights of the telescopic audience stand group are sequentially reduced, the central control unit is PLC SIMATIC S7-400, as shown in figure 1, the telescopic audience stand group comprises a plurality of moving tables 11 and driving tables 12, the heights of the moving tables are sequentially reduced, at least two groups of driving motors are arranged at the bottom of the driving tables and used for driving the driving tables to move, the moving tables are connected in a sliding mode and connected with each other in a sliding mode, as shown in figure 1, a moving signal output end PLC SIMATIC S7-400 is connected with a signal receiving end for starting and stopping the driving motors, folding chairs 13 are arranged on the moving tables and the driving tables, each folding chair comprises a rotatable chair back 131, and as shown in figure 3, and a rotating. The mobile station comprises a mobile station table board 111 and a plurality of support columns 112, the folding chair is arranged on the mobile station table board, rollers 113 are arranged at one ends of the support columns close to the ground, and the other ends of the support columns are fixedly connected with the mobile station table board. The supporting column is provided with a locking mechanism 6 used for locking the roller, the locking mechanism comprises a locking rod 62, an electromagnetic telescopic rod 61, a wedge block 64 and a spring 63, one end of the locking rod is hinged with the supporting column, the other end of the locking rod is fixedly connected with one end of the spring, the other end of the spring is connected with the wedge block, the locking rod is hinged with an extension rod of the electromagnetic telescopic rod, the body of the electromagnetic telescopic rod is hinged with the supporting column, and the control end of the electromagnetic telescopic rod is connected with the.

As shown in fig. 8, a support rail 114 is provided on the side of each mobile platform top close to the ground, and a support roller 115 corresponding to the rail is provided on the side of each mobile platform top far from the ground. The driving platform comprises a driving platform surface and rollers, the folding chair is arranged on the platform surface, at least two groups of rollers 113 are arranged at the bottom of the driving platform, the driving motor drives the rollers to roll, and one side, far away from the ground, of the driving platform is provided with a supporting roller 115. Each support column is provided with a stabilizing guide rail 116 at one end close to the ground, and a stabilizing roller capable of rolling in the stabilizing guide rail is arranged at one side of the support column opposite to the guide rail. As shown in fig. 2 and 3, a first through groove 41 and a second through groove 42 are formed in one side, away from the seat back, of the rotating disc, locking grooves 43 are formed in the lower portions of the first through groove and the second through groove, locking half rings 44 are arranged in the locking grooves, a telescopic body 45 for pushing the locking half rings is further arranged on the rotating disc, the extending ends of the telescopic body are hinged to the locking half rings, the fixed ends of the telescopic body are hinged to the rotating disc, the controlled ends of the telescopic body are connected with PLC SIMATIC S7-400 telescopic body control ends, a rotating motor 46 is arranged on the rotating disc, a rotating motor shaft is fixedly connected with the rotating disc, PLC SIMATIC S7-400 motor start-stop signal output ends are connected with rotating motor start-stop signal receiving ends, a position sensor 47 is arranged on the rotating disc, and a position sensor signal output end. The telescopic body is a cylinder, a hydraulic cylinder and an electromagnetic telescopic rod. The bottom of the first straight groove is provided with a first friction roller 411 which is connected with the power input end of a first rotating switch 412, and the signal output end of the first rotating switch is connected with PLC SIMATIC S7-400 sudden stop signal input ends. And a second friction roller 421 is arranged at the bottom of the second straight-through groove, a pressure sensor 423 is arranged on the second friction roller, the signal output end of the pressure sensor is connected with PLC SIMATIC S7-400 pressure signal input ends, the second friction roller is connected with the power input end of a second rotary switch 422, and the signal output end of the second rotary switch is connected with PLC SIMATIC S7-400 starting signal input ends.

As shown in fig. 6, the locking half rings are retracted into the locking grooves by the telescopic body, so that the wheels of the wheelchair are not hindered from moving.

Fig. 7 shows a state of the present invention when each mobile station contracts.

Driving motor can take the drive station to remove, the drive station area mobile station removes, accomplish stretching out and retracting of mobile station, the back of the chair of folding chair can be folding, save space, make things convenient for the mobile station to stretch out and draw back, the rolling disc at the back of the chair, when the back of the chair is fold condition, the rolling disc is the horizontality, when having the wheelchair on the rolling disc, can rotate the rolling disc, the orientation of adjustment wheelchair, make things convenient for the disabled person to watch the match, the height of mobile station reduces in proper order, the low mobile station can be received into below the high mobile station, reach the effect of saving space.

The supporting rollers on the mobile station roll in the adjacent mobile station supporting guide rails higher than the mobile station, so that the guiding function is realized, and the audience stand cannot be blocked in the expansion process.

The electromagnetic telescopic rod is controlled by the controller to lose power, so that the telescopic rod is controlled to stretch out and retract, the locking rod is driven to rotate when the telescopic rod stretches out, the wedge blocks fall onto the ground from the air, the roller wheels are blocked, the roller wheels cannot roll backwards, the safety of the mobile station is guaranteed, the locking rod is driven to rotate when the telescopic rod stretches out, the wedge blocks are lifted up from the ground, the roller wheels can roll, and the mobile station can be nested and retracted.

The driving platform can be ensured to move on the same straight line all the time by at least two groups of driving motors, the driving motors can drive the driving platform to move, and the driving platform drives the mobile platform to move so as to complete the extension and retraction of the mobile platform.

The stabilizing guide rail and the supporting guide rail form double-guide-rail matching, so that the mobile station is guaranteed not to be blocked in the telescopic process, the guidance quality is better, and the mobile station can move along the same straight line all the time and cannot deviate.

The wheel of the wheelchair can move in the first through groove and the second through groove, the spectator stand is higher, the first through groove and the second through groove can ensure that the wheel of the wheelchair cannot deviate from the through grooves, the safety is better, the telescopic body can push the locking semi-ring out of the locking groove under the instruction of the central controller, the locking semi-ring penetrates through the gap of the wheel of the wheelchair, the function of fixing the wheelchair is achieved, the safety of the disabled in watching a match is protected, the rotating motor can rotate the rotating disc under the control of PLC SIMATIC S7-400, the wheelchair on the rotating disc rotates along with the rotating disc, the orientation of the wheelchair is adjusted, and the disabled can watch the match conveniently.

After the wheel of the wheelchair is penetrated by the locking semi-ring, the locking semi-ring only penetrates between spokes of the wheel of the wheelchair, the wheel can also rotate in a small angle, at the moment, a user rotates the wheel, the wheel drives a friction roller in friction contact with the wheel, the friction roller rotates to drive a first rotating switch to rotate, the first rotating switch causes the voltage change at the input end of the PLC SIMATIC S7-400 emergency stop signal, so that the PLC SIMATIC S7-400 receives the emergency stop signal, and the emergency stop operation of the rotating disc is carried out. KM1 is the normally open contact of the first rotary switch.

After the wheel of the wheelchair is penetrated by the locking semi-ring, the locking semi-ring only penetrates between spokes of the wheel of the wheelchair, the wheel can also rotate in a small angle, at the moment, a user rotates the wheel, the wheel drives the friction roller in friction contact with the wheel, the friction roller rotates to drive the second rotary switch to rotate, the second rotary switch causes voltage change at the power input end of PLC SIMATIC S7-400, and the PLC SIMATIC S7-400 receives the power input end to rotate the rotary disc. KM2 is the normally open contact of the second rotary switch. The first rotary switch and the second rotary switch may be contact portions of a relay, and when the center shaft rotates, the normally open contact becomes a normally closed contact, and the normally closed contact becomes a normally open contact.

The invention also comprises a high-stability automatic control active audience stand working method, which adopts the high-stability automatic control active audience stand, and comprises the following steps:

s1: PLC SIMATIC S7-400 setting the pressure time threshold to 5 seconds;

s2: after PLC SIMATIC S7-400 receives the pressure signal of the pressure sensor, timing is started, when the pressure time threshold is reached, the control unit controls the telescopic body to act, the locking semi-ring is pushed out of the locking groove, and if the pressure signal of the pressure sensor received by PLC SIMATIC S7-400 disappears in the timing process, timing is ended;

s3: PLC SIMATIC S7-400 dividing the rotary disc into channel state and working state by the rotary position of the rotary disc collected by the position sensor, under the channel state, after the input end of PLC SIMATIC S7-400 start signal receives the voltage change signal, PLC SIMATIC S7-400 control the rotary motor to rotate, and turn the rotary disc from the channel state to the working state, under the working state, after the input end of PLC SIMATIC S7-400 start signal receives the voltage change signal, PLC SIMATIC S7-400 control the rotary motor to rotate, and turn the rotary disc from the working state to the channel state;

s4: after the rotating disc is rotated to the channel state from the working state, the control unit controls the telescopic body to act, and the locking semi-rings are retracted into the locking grooves;

s5: when the PLC SIMATIC S7-400 scram signal input end receives a voltage change signal, PLC SIMATIC S7-400 controls the rotating motor to stop rotating. When the PLC SIMATIC S7-400 reaches a pressure time threshold value, the wheel of the wheelchair presses the friction roller for a period of time, and the user wishes to sit on the wheelchair, the telescopic body pushes the locking semi-ring out of the locking groove, the locking semi-ring passes through gaps among spokes of the wheel of the wheelchair to fix the wheel of the wheelchair so as not to overturn, the passing states of the rotating discs are that through grooves on the rotating discs are connected in sequence, so that the wheel of the wheelchair can pass through the through grooves, the working state of the rotating disc means that the rotating disc rotates 90 degrees from a passing state, a wheelchair fixed on the rotating disc faces a competition field, a user can conveniently watch a competition, the locking semi-ring can possibly wipe spokes to penetrate through the wheel, the wheel can only rotate in one direction at the moment, and only one signal can be generated.

Claims (9)

1. A high-stability automatic control movable audience stand is characterized by comprising a central control unit, a telescopic audience stand group and a driving motor, wherein the heights of the telescopic audience stand group are sequentially reduced, the telescopic audience stand group comprises a plurality of moving tables and driving tables, the heights of the moving tables are sequentially reduced, at least two groups of driving motors are arranged at the bottom of the driving tables and are used for driving the driving tables to move, the moving tables are connected in a sliding manner, the moving tables are connected with the driving tables in a sliding manner, a moving signal output end of the central control unit is connected with a starting and stopping signal receiving end of the driving motor, folding chairs are arranged on the moving tables and the driving tables and comprise rotatable chair backs, rotating discs are arranged on the backs of the chair backs, first straight-through grooves and second straight-through grooves are formed in the sides, away from the chair backs, of the rotating discs, locking semi-rings are formed below the first straight-through grooves and the second straight-through grooves, the telescopic body extending end is hinged to the locking semi-ring, the telescopic body fixed end is hinged to the rotating disc, the controlled end of the telescopic body is connected with the telescopic body control end of the central control unit, the rotating disc is provided with a rotating motor and a central control unit, a rotating motor shaft is fixedly connected with the rotating disc, the motor starting and stopping signal output end of the central control unit is connected with the rotating motor starting and stopping signal receiving end, the rotating disc is provided with a position sensor, and the signal output end of the position sensor is connected with the position signal receiving end of the central control.

2. The high-stability automatic control movable audience stand as claimed in claim 1, wherein the mobile station comprises a mobile station table and a plurality of support columns, the folding chair is arranged on the mobile station table, rollers are arranged at one ends of the support columns close to the ground, the other ends of the support columns are fixedly connected with the mobile station table, locking mechanisms for locking the rollers are arranged on the support columns, each locking mechanism comprises a locking rod, an electromagnetic telescopic rod, a wedge block and a spring, one end of each locking rod is hinged with one end of each support column, the other end of each locking rod is fixedly connected with one end of each spring, the other end of each spring is connected with the wedge block, each locking rod is hinged with an extension rod of the electromagnetic telescopic rod, a body of each electromagnetic telescopic rod is.

3. A high stability automatic control movable audience stand as claimed in claim 1 or 2, wherein a support rail is provided on a side of each movable table top close to the ground, and a support roller corresponding to the support rail is provided on a side of each movable table top away from the ground.

4. The high-stability automatic control movable audience stand of claim 1, wherein the driving platform comprises a driving platform and rollers, the folding chair is disposed on the platform, the bottom of the driving platform is provided with at least two sets of rollers, the driving motor drives the rollers to roll, and the side of the driving platform away from the ground is provided with a supporting roller.

5. A high stability automatic control movable audience stand as defined in claim 2 wherein each support post has a stabilizing guide near the ground, and a stabilizing roller rolling in the stabilizing guide is provided on the side of the support post opposite to the guide.

6. The high-stability automatic control movable audience stand of claim 1, wherein the telescopic body is a cylinder, a hydraulic cylinder or an electromagnetic telescopic rod.

7. The high-stability automatic control movable audience stand of claim 1, wherein the bottom of the first through groove is provided with a first friction roller, the first friction roller is connected with a power input end of a first rotary switch, and a signal output end of the first rotary switch is connected with an emergency stop signal input end of the central control unit.

8. The high-stability automatic control movable audience stand of claim 1, wherein a second friction roller is arranged at the bottom of the second through groove, a pressure sensor is arranged on the second friction roller, a signal output end of the pressure sensor is connected with a pressure signal input end of the central control unit, the second friction roller is connected with a power input end of the second rotary switch, and a signal output end of the second rotary switch is connected with a starting signal input end of the central control unit.

9. A high stability automated control active spectator stand operating method, employing a high stability automated control active spectator stand as claimed in any one of claims 1-8, characterized in that the method comprises the steps of:

s1: the central control unit sets a pressure time threshold;

s2: after the central control unit receives a pressure signal of the pressure sensor, timing is started, when the pressure time threshold is reached by timing, the control unit controls the telescopic body to act, the locking semi-ring is pushed out of the locking groove, and if the pressure signal received by the central control unit from the pressure sensor disappears in the timing process, timing is finished;

s3: the central control unit divides the rotating disc into a channel state and a working state according to the rotating position of the rotating disc acquired by the position sensor, and in the channel state, after the starting signal input end of the central control unit receives a voltage change signal, the central control unit controls the rotating motor to rotate and rotates the rotating disc from the channel state to the working state;

s4: after the rotating disc is rotated to the channel state from the working state, the control unit controls the telescopic body to act, and the locking semi-rings are retracted into the locking grooves;

s5: when the input end of the intermediate control unit emergency stop signal receives the voltage change signal, the intermediate control unit controls the rotating electrode to stop rotating.

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