CN208666856U - A kind of lift work platform that accident rate is low - Google Patents

Abstract

The utility model relates to the low lift work platforms of accident rate, it includes carrying platform frame, driving mechanism, rolling screen door, wherein rolling screen door includes doorframe, door curtain, the actuator for driving door curtain drops down to be closed doorframe, is arranged in door curtain bottom bumper, pressure sensor and PLC controller, wherein PLC controller is connected with the actuator, after PLC controller obtains pressure sensor information, the instruction for stopping downlink and reversing reset and moving is assigned to actuator；Lift work platform further includes that safe anti-falling falls mechanism, which falls the more cross bars and draw bar that mechanism includes anti-fall hook, is correspondingly arranged at anti-fall hook opposite side and is successively spaced apart along the short transverse of riser guide.When the utility model prevents unexpected on the one hand, carrying platform falls；On the other hand in door closing course, cargo damage and generation the phenomenon that injury to personnel, improve safety in utilization caused by preventing because of shutdown.

Description

A kind of lift work platform that accident rate is low

Technical field

The utility model belongs to lift work platform field, and in particular to a kind of lift work platform that accident rate is low.

Background technique

It is well known that lift work platform is widely used in the transmitting of cargo, and such as: the cargo location between two floors turns Change, although, final purpose with using Cargo Lift conversion effect it is identical, used lift work platform compared with Cargo Lift, at This lower, also installation at very convenient scene.

Currently, being directed to lift work platform, it is imported and exported in each floor equipped with one, then by the way of rolling screen door Will inlet and outlet closure, the rolling screen door is as the car door of Cargo Lift, still, it is contemplated that rolling screen door using safe, such as If being easy on the body for being pressed onto cargo or passenger, when occurring unexpected during shutdown or when operator does not pay attention to if not Stop shutdown movement words in time, will cause cargo or the damage of personnel, safety wretched insufficiency.

Then, in existing lift work platform, substantially by the way of chain and the cooperation of track and pulley, Carrying platform oscilaltion is driven therefore to snap under situation once there is chain under the driving of hydraulic cylinder, carrying platform The possibility of accidental falling can occur, therefore, the application is provided with track pulley self-locking device, thoroughly solves carrying platform operation hair The problem of raw accidental falling, meanwhile, it, can be constant in setting position by carrying platform by manual manipulation track pulley self-locking device It sets, is also convenient for the maintenance and maintenance of lift work platform.

Summary of the invention

Technical problem to be solved in the utility model is to overcome the deficiencies of the prior art and provide a kind of improved accident rate Low lift work platform, when one side prevents unexpected, carrying platform falls；On the other hand it in door closing course, meets Can stop continuing the movement closed the door after to obstacle, and quickly return and reset, caused by preventing because of shutdown cargo damage and personnel by Therefore the phenomenon that hurting under the two combination, significantly increases the safety in utilization of lift work platform.

In order to solve the above technical problems, the technical solution that the utility model is taken is as follows:

A kind of lift work platform that accident rate is low comprising carrying platform frame, for drive carrying platform frame up and down rise It drops the driving mechanism of movement and is correspondingly arranged at the rolling screen door of every layer of inlet and outlet, wherein driving mechanism includes hydraulic cylinder, passes Movable sprocket and chain, rolling screen door include the doorframe that every layer of inlet and outlet position is arranged in, are arranged at the top of doorframe and can furl The actuator that doorframe is closed by door curtain and driving door curtain drops down, in particular, being equipped with to form closed chamber in door curtain bottom The bumper of body is arranged on bumper for monitoring the pressure sensor of air pressure change in cavity and can receive pressure The PLC controller of the issued pressure changing information of sensor, wherein PLC controller is connected with the actuator, when PLC is controlled After device processed obtains pressure sensor information, the instruction for stopping downlink and reversing reset and moving is assigned to actuator；

Lift work platform further includes that safe anti-falling falls mechanism, and it includes that overturning setting is flat in carrying which, which falls mechanism, The anti-fall hook of rack opposite sides, be correspondingly arranged at the anti-fall hook opposite side and along the short transverse of riser guide according to More cross bars of minor tick distribution and for by the hooked ends of the anti-fall hook and the chain for connecting the carrying platform frame The draw bar that item is connected, wherein safety zone is formed between per two adjacent cross bars, when the carrying platform frame is normal When operation, the chain applies stress to the draw bar, and draws the anti-fall hook and keep to the carrying platform frame Interior movement tendency and far from the safety zone；When the chain snaps, the draw bar loses limitation, and described is anti-fall It links up with and moves and be hung on the cross bar where the safety zone bottom to immediate safety zone, to be held described in limitation Carrying platform frame falls.

Preferably, the material of bumper be rubber or plastics, and the filler strip including extending along the door curtain width direction, Sealing plate for being closed filler strip both ends, wherein sealing plate and filler strip and expansion when described in door curtain bottom constitute one closure Cavity, after filler strip and other objects contact, air pressure changes in cavity, and pressure sensor feeds back to information described PLC controller.

Further, bumper further includes the partition of setting in the cavity, and cavity is separated by partition in multiple points of chambers, and phase It is interconnected between two points of adjacent chambers.On the one hand the sizing support of bumper is realized in the setting of partition, reinforce Anti-knocking performance, It is also convenient for the reset of bumper simultaneously；On the other hand it is formed and divides chamber, once a certain point of chamber is squeezed, other divide the gas of chamber Pressure can change significantly, to improve the susceptibility of pressure sensor.

Specifically, being formed with air-flow through-hole in the middle part of partition.

A specific implementation according to the present utility model and preferred aspect, partition have two pieces, along the length direction of filler strip It is uniformly distributed, cavity is divided into first point of chamber, second point of chamber and third along length direction and divides chamber.

Preferably, pressure sensor has two groups, and respectively corresponds setting and divide on chamber in first point of chamber and third.

Preferably, the section of bumper is in opening up U-shaped.

A specific implementation according to the present utility model and preferred aspect, U-shaped width are equal to the thickness of door curtain, and U-shaped The length of vertical portion is 2 ~ 3 times of bottom arc radius length.

Preferably, actuator includes winding the wireline reel of door curtain, the drive motor of forward and reverse rotation and for that will drive The driving member of motor and wireline reel transmission connection.

In addition, rolling screen door further includes the contact-making switch being connected with every layer of lighting circuit, and when rolling screen door is opened, respective layer Contact-making switch connection circuit, headlamp be in illuminates state；After rolling screen door closure, the contact-making switch open circuit of respective layer is shone Bright lamp is in OFF state.

Another specific implementation according to the present utility model and preferred aspect, anti-fall hook includes passing through pivot from one end It rotates the ontology of connection, ontology the other end is set and is formed with hanging buckle slot hook portion with carrying platform frame, wherein leading Draw bar to be connected in chain and hook portion, after draw bar loses the active force of chain, anti-fall hook is under self weight to safety zone Overturning.

Preferably, the section of cross bar is square, and hook portion is hung on cross bar from the hanging buckle slot being arranged downward.

Another specific implementation according to the present utility model and preferred aspect, hook portion include being arranged in ontology far from pivot The extension of module of end, the extension side mode block that extension of module outer end is set and is extended downwardly, wherein extension of module and hang side mode The side of block and body upper part constitutes hanging buckle slot, and when hook portion is hung on cross bar, hook portion is engaged in from hanging buckle slot On cross bar.The benefit being arranged in this way: one, can in the moment fallen, by cross bar and the contact of body upper part side and guiding, by Step completes hanging buckle so that cross bar enters in hanging buckle slot；Two, by the occlusion of hanging buckle slot and cross bar, so that the carrying after hanging buckle Paralell is relatively stable, reduces and shakes.

Preferably, draw bar is telescopic rod.

Specifically, the driving method of telescopic rod is electronic, pneumatically or hydraulically.Here, applicant explains, using flexible The purpose of bar is: in normal service, the overturning of anti-fall hook can be realized by the adjusting of telescopic rod, thus by carrying platform It is located on the cross bar of setting, it is very convenient.

Another specific implementation according to the present utility model and preferred aspect, it further includes for that will prevent that safe anti-falling, which falls mechanism, Fall the hooked ends and the connector that is connected to each other of carrying platform frame of hook, wherein connector with anti-fall hook overturn and open or Folding setting.

Preferably, connector includes from one end rotation connection and being capable of opening or the first strut of folding in 0 ~ 180 ° With the second strut, wherein the other end of the first strut and the second strut rotate respectively be connected to hooked ends and carrying platform On frame, link up with when anti-fall to when the overturning of safety zone, the first strut and the second strut gradually strut, and are hung on cross until anti-fall After bar, the first strut and the second strut are on the same line.That is, when anti-fall hook cooperates with cross bar, first Strut and the second strut form a support rod, to prevent locking hook.

In addition, it is arranged in parallel between more cross bars, and it is located at the symmetrical setting of cross bar of two sides.

Meanwhile the riser guide positioned at the same side has two, more cross bars are uniformly distributed along riser guide length direction, And it is located in the outside of ipsilateral two riser guides.In short, the effect of cross bar can not only cooperate with anti-fall hook to prevent Carrying platform falls, but also can reinforce track firmness, and then simplifies the structure of lift work platform.

Due to the implementation of above technical scheme, the utility model has the advantages that compared with prior art

When the utility model prevents unexpected on the one hand, carrying platform falls；On the other hand it in door closing course, encounters It can stop the movement for continuing to close the door after obstacle, and quickly return and reset, cargo damage and injury to personnel caused by preventing because of shutdown The phenomenon that occur, therefore, the two combination under, significantly increase the safety in utilization of lift work platform.

Detailed description of the invention

Fig. 1 is the structural schematic diagram according to the utility model lift work platform；

Fig. 2 is the structural schematic diagram of rolling screen door in Fig. 1；

Fig. 3 is the partial structurtes schematic front view of rolling screen door in Fig. 1；

Fig. 4 is enlarged diagram when anti-fall hook is in hanging buckle in 1；

Fig. 5 is enlarged diagram when anti-fall hook is in disengaging cross bar in 1；

Wherein: 1, carrying platform frame；10, attachment base；

A, rolling screen door；A1, doorframe；2, door curtain；3, actuator；30, wireline reel；4, bumper；40, filler strip；41, sealing plate； 42, partition；42a, air-flow through-hole；A, cavity；A1, first point of chamber；A2, second point of chamber；A3, third divide chamber；5, pressure sensor；

B, safe anti-falling falls mechanism；B2, anti-fall hook；B20, ontology；B21, hook portion；210, extension of module；211, it hangs Side mode block；B3, riser guide；B4, cross bar；B5, chain；B6, draw bar；B7, connector；71, the first strut；72, the second support Bar.

Specific embodiment

The utility model is described in more detail with specific embodiment with reference to the accompanying drawing.

In order to make the above objects, features, and advantages of the present application more apparent, with reference to the accompanying drawing to the application Specific embodiment be described in detail.Many details are explained in the following description in order to fully understand this Shen Please.But the application can be implemented with being much different from other way described herein, those skilled in the art can be not Similar improvement is done in the case where violating the application intension, therefore the application is not limited by the specific embodiments disclosed below.

In the description of the present application, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or Positional relationship is merely for convenience of description the application and simplifies description, rather than the device or element of indication or suggestion meaning must There must be specific orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include at least one this feature.In the description of the present application, the meaning of " plurality " is at least two, such as two, three It is a etc., unless otherwise specifically defined.

In this application unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc. Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art For, the concrete meaning of above-mentioned term in this application can be understood as the case may be.

In this application unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below " One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.

It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element On one element or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be with It is directly to another element or may be simultaneously present centering elements.Term as used herein " vertically ", " level ", "upper", "lower", "left", "right" and similar statement for illustrative purposes only, be not offered as being uniquely to implement Mode.

Referring to figs. 1 to 5, the lift work platform low the present embodiment provides accident rate comprising carrying platform frame 1, for drive the driving mechanism of 1 oscilaltion campaign of carrying platform frame, be correspondingly arranged at every layer inlet and outlet rolling screen door A, with And safe anti-falling falls mechanism B, wherein driving mechanism includes hydraulic cylinder, drive sprocket and chain.

Specifically, rolling screen door A include be arranged on lift work platform framework and to every layer import and export position doorframe A1, The actuator 3 that the door curtain 2 that at the top of doorframe A1 and can be furled is set and 2 drops down of door curtain is driven to be closed doorframe A1, It is wherein equipped in 2 bottom of door curtain and to form the bumper 4 of closed housing, be arranged on bumper 4 for monitoring air pressure in cavity The pressure sensor 5 of variation and can receive pressure sensor 5 issued pressure changing information PLC controller, wherein PLC controller is connected with actuator 3, after PLC controller obtains 5 information of pressure sensor, assigns under stopping to actuator 3 The instruction of row and reversing reset movement.

Specifically, the material of bumper 4 is rubber or plastics, and the section of bumper 4 is in opening up U-shaped.

Further, U-shaped width is equal to the thickness of door curtain 2, and the length of U-shaped vertical portion is bottom arc radius length 2 ~ 3 times.Here, defining U-shaped specific proportionate relationship, be conducive to the molding of cavity, while after extruding, being advantageous to Then the reset of bumper 4 more can effectively form door curtain and protect.

Specifically, bumper 4 includes the filler strip 40 extended along 2 width direction of door curtain, for closing 40 both ends of filler strip The partition of the sealing plate 41 of conjunction and setting in the cavity, wherein 2 bottom of door curtain constitutes one after sealing plate 41 and filler strip 40 and expansion The cavity a of a closure.After filler strip 40 and other objects contact, air pressure changes in cavity a, and pressure sensor 5 is by information Feed back to PLC controller.

In this example, bumper further includes the partition 42 being arranged in cavity a, and it is in multiple points of chambers that cavity a is separated by partition 42, And it is interconnected between two points of adjacent chambers.

Specifically, partition 42 there are two pieces, it is uniformly distributed along the length direction of filler strip 40, cavity a is along length side Divide chamber a3 to first point of chamber a1, second point of chamber a2 and third is divided into.

Meanwhile it being formed with air-flow through-hole 42a at the middle part of partition 42, and therefore, first point of chamber a1, second point of chamber a2 and third Divide the setting that is interconnected between chamber a3 three.

Then, applicant explains, on the one hand the sizing support of bumper is realized in the setting of partition 42, reinforces Anti-knocking Performance, while being also convenient for the reset of bumper；On the other hand it is formed and divides chamber, once a certain point of chamber is squeezed, other points The air pressure of chamber can change significantly, to improve the susceptibility of pressure sensor.

As for the setting of pressure sensor 5, it can be detection three and be divided to any one in chamber or two, in this example, pressure Sensor 5 has two groups, and respectively corresponds setting and divide on chamber in first point of chamber and third.Here, there is setting for two groups of pressure sensors 5 It sets, mainly can be improved the sensitivity and accuracy of induction, prevent maloperation.

In addition, actuator 3 include the winding wireline reel 30 of door curtain 2, forward and reverse rotation drive motor (not shown), And the driving member (not shown) for drive motor and wireline reel to be sequentially connected.

Here, although drive motor and driving member specific structure are not disclosed on figure, for this field, both Conventional equipment, as for example common drive sprocket of driving member and drive pulley.

Then, above-mentioned rolling screen door further includes the contact-making switch (not shown) being connected with every layer of lighting circuit, when When rolling screen door is opened, the contact-making switch connection circuit of respective layer, headlamp, which is in, illuminates state；It is corresponding after rolling screen door closure The contact-making switch open circuit of layer, headlamp are in OFF state.That is, the switch of rolling screen door is joined with lift work platform Dynamic, Men Yikai, corresponding floor lamp just illuminates, and after door is closed 3-5s, corresponding floor lamp just extinguishes.

Then, applicant is it should be noted that in this application, when carrying platform reaches two layers by one layer, roller shutter Door can automatically open, and when two layer operations effect shipment, press door close button, rolling screen door is automatically closed, platform downlink.If volume Curtain door is not closed completely, then equipment cannot be run, and also ensures that interlocked with equipment in this way, improves safety in utilization, meanwhile, In this example, although not being described in detail in place to whether rolling screen door is closed, its specific embodiment is this field Common sense such as commonly touches mode, on doorframe and is respectively equipped with contact-making switch on door curtain, after two contact-making switches touch, Indicate closure in place, wireline reel stop motion at this time also similarly is provided with contact-making switch in open position, passes through the side of contact Formula judges whether to open in place.

Fall mechanism B as safe anti-falling comprising overturning be arranged in 1 opposite sides of carrying platform frame anti-fall hook B2, Be correspondingly arranged at it is anti-fall hook the opposite side B2 and be successively spaced apart along the short transverse of riser guide B3 more cross bar Bs 4, And the draw bar B6 for the hooked ends of anti-fall hook B2 to be connected with the chain B5 for connecting carrying platform frame 1, wherein Safety zone is formed between per two adjacent cross bar Bs 4, when carrying platform frame 1 operates normally, chain B5 applies draw bar B6 Stress, and draw anti-fall hook B2 keep the movement tendency into carrying platform frame 1 and far from safety zone；When chain B5 snaps, Draw bar B6 loses limitation, and anti-fall hook B2 is moved to immediate safety zone and is hung on where the safety zone bottom In cross bar B 4, to limit falling for carrying platform frame 1.

Anti-fall hook B2 includes being existed from one end by the rotate ontology B20 of connection, the setting of pivot and carrying platform frame 1 The other end ontology B20 and the hook portion B21 for being formed with hanging buckle slot, wherein draw bar B6 is connected to chain B5 and hook portion B21 On, after draw bar B6 loses the active force of chain B5, anti-fall hook B2 is overturn under self weight to safety zone.

Attachment base 10 is equipped on carrying platform frame 1, the lower end of ontology B20 is arranged by pivoting in attachment base 10 On.

In this example, the section for the stabilization and accuracy for ensuring hanging buckle, used cross bar B 4 is square, hook portion B21 It is hung in cross bar B 4 from the hanging buckle slot being arranged downward.

Meanwhile hook portion B21 includes the extension of module 210 being arranged in ontology B20 far from pivot ends, is arranged in extension die 210 outer end of block and the extension side mode block 211 extended downwardly, wherein on extension of module 210 and extension side mode block 211 and ontology B20 The side in portion constitutes hanging buckle slot, and when hook portion B21 is hung in cross bar B 4, hook portion B21 is engaged in cross bar from hanging buckle slot On B4.The benefit being arranged in this way: one, can be in the moment fallen, by cross bar and the contact of body upper part side and guiding, gradually So that cross bar enters in hanging buckle slot, hanging buckle is completed；Two, by the occlusion of hanging buckle slot and cross bar, so that the carrying after hanging buckle is flat Rack is relatively stable, reduces and shakes.

In this example, hook portion B21 and ontology B20 are integrally formed setting.

Then, it in order to facilitate manual manipulation, does not need to remove draw bar B6 and chain B5, as long as draw bar B6 is Telescopic rod.Meanwhile applicant is it should be understood that only under special circumstances (such as maintenance), draw bar B6 can just stretch Contracting, under normal operating condition, the length of draw bar B6 is constant.

Specifically, the driving method of telescopic rod is electronic, pneumatically or hydraulically.Here, applicant explains, using flexible The purpose of bar is: in normal service, the overturning of anti-fall hook can be realized by the adjusting of telescopic rod, thus by carrying platform It is located on the cross bar of setting, it is very convenient.

Meanwhile it further includes for the hooked ends of anti-fall hook B2 and carrying platform frame 1 are opposite that safe anti-falling, which falls mechanism, The connector B7 connect, wherein connector B7 with anti-fall hook B2 overturn and open or folding be arranged.

In this example, connector B7 includes that can open from one end rotation connection and in 0 ~ 180 ° or folding first is supportted Bar 71 and the second strut 72, wherein the other end of the first strut 71 and the second strut 72 rotate respectively be connected to hooked ends On carrying platform frame 1, when anti-fall hook B2 is overturn to safety zone, the first strut 71 and the second strut 72 are gradually strutted, directly After being hung on cross bar B 4 to anti-fall hook B2, the first strut 71 and the second strut 72 are on the same line.That is, working as When anti-fall hook B2 and cross bar B 4 cooperate, the first strut 71 and the second strut 72 form a support rod, to prevent locking hook.

When anti-fall hook B2 is in outside safety zone, at this point, the angle formed between the first strut 71 and the second strut 72 120 °, and point is rotated positioned at the top with 1 tie point of hook portion 21 and carrying platform frame, then, carrying platform frame 1 is in safety Working condition, this when, draw bar B6 and connector B7 are equal to the gravity power of anti-fall hook B2 to the torque of anti-fall hook B2 Square, therefore it is in equilibrium state, once the ineffective power of draw bar B6, anti-fall hook B2 is with regard to disequilibrium, and in the effect of gravity Under, it is overturn to outside carrying platform frame 1, to realize hanging buckle fall arrest.

In addition, in this example, it is arranged in parallel between more cross bar Bs 4, and it is located at the symmetrical setting of cross bar B 4 of two sides.

Meanwhile the riser guide B3 positioned at the same side has two, more cross bar Bs 4 are equal along riser guide B3 length direction Even distribution, and it is located in the outside of ipsilateral two riser guide B3.In short, the effect of cross bar B 4 can not only be with anti-fall hook B2 cooperates to prevent falling for carrying platform, but also can reinforce riser guide B3 firmness, and then it is flat to simplify lift work The structure of platform.

In conclusion falling mechanism using above-mentioned safe anti-falling, have the advantage that

1, after chain is broken, anti-fall hook can be overturn from trend safety zone, and hanging buckle is at corresponding safety zone bottom On the cross bar in portion, to prevent falling for carrying platform；

2, when needing conventional maintenance or maintenance, by the adjusting of telescopic rod, the change of the state of anti-fall hook is realized, Carrying platform can be located in the safety zone of setting；

3, the positioning of anti-fall hook is realized using the principle of equalising torque, and after balance is destroyed, passes through setting for hanging buckle slot It sets, gradually cross bar is imported in hanging buckle slot and is engaged, to limit the shaking of carrying platform, that is to say, that even if chain occurs After item fracture, the collision on carrying platform between cargo will not be caused.

The utility model is described in detail above, its object is to allow the personage for being familiar with this field technology can be much of that It solves the content of the utility model and is implemented, do not limit the protection scope of the present invention, it is all practical according to this Equivalent change or modification made by novel Spirit Essence should all cover within the protection scope of the present utility model.

Claims (10)

1. a kind of lift work platform that accident rate is low comprising carrying platform frame, for driving the carrying platform frame or more The driving mechanism of elevating movement and the rolling screen door for being correspondingly arranged at every layer of inlet and outlet, wherein the driving mechanism includes liquid Compressing cylinder, drive sprocket and chain, the rolling screen door include be arranged in every layer inlet and outlet position doorframe, be arranged in it is described The actuator that the doorframe is closed by doorframe top and the door curtain that can be furled and the driving door curtain drops down, it is special Sign is: being equipped in the door curtain bottom and to form the bumper of closed housing, is arranged on the bumper for monitoring The pressure sensor of air pressure change and the issued pressure changing information of the pressure sensor can be received in the cavity PLC controller, wherein the PLC controller is connected with the actuator, when the PLC controller obtains the pressure After sensor information, the actuator of Xiang Suoshu assigns the instruction for stopping downlink and reversing reset movement；

The lift work platform further includes that safe anti-falling falls mechanism, and it includes that overturning setting is being held that the safe anti-falling, which falls mechanism, The anti-fall hook of carrying platform frame opposite sides is correspondingly arranged at the anti-fall hook opposite side and along the height side of riser guide To more cross bars being successively spaced apart and for by the hooked ends of the anti-fall hook with connect the carrying platform frame The draw bar that is connected of chain, wherein safety zone is formed between per two adjacent cross bars, when the carrying platform frame When normal operation, the chain applies stress to the draw bar, and draws the anti-fall hook and keep flat to the carrying Movement tendency in rack and far from the safety zone；When the chain snaps, the draw bar loses limitation, described Anti-fall link up with moves to immediate safety zone and is hung on the cross bar where the safety zone bottom, to limit State falling for carrying platform frame.

2. the low lift work platform of accident rate according to claim 1, it is characterised in that: the material of the bumper For rubber or plastics, and the filler strip including extending along the door curtain width direction, for what the filler strip both ends were closed Sealing plate, wherein the door curtain bottom described in when the sealing plate and the filler strip and expansion constitutes the cavity of a closure, when described After filler strip is contacted with other objects, air pressure changes in the cavity, and the pressure sensor feeds back to information described PLC controller.

3. the low lift work platform of accident rate according to claim 2, it is characterised in that: the bumper further includes Partition in the cavity is set, and it is in multiple points of chambers that the cavity is separated by the partition, and divides chamber described in adjacent two Between be interconnected.

4. the low lift work platform of accident rate according to claim 3, it is characterised in that: the partition has two pieces, It is uniformly distributed along the length direction of the filler strip, the cavity is divided into first point of chamber, second along length direction Chamber and third is divided to divide chamber, the pressure sensor there are two groups, and respectively corresponds and be arranged in first point of chamber and the third Divide on chamber.

5. the low lift work platform of accident rate according to claim 1, it is characterised in that: the section of the bumper In opening up U-shaped, wherein the U-shaped width is equal to the thickness of door curtain, and the length of U-shaped vertical portion is bottom arc 2 ~ 3 times of radius length.

6. the low lift work platform of accident rate according to claim 1, it is characterised in that: the rolling screen door further includes The contact-making switch being connected with every layer of lighting circuit, when the rolling screen door is opened, the contact-making switch of respective layer is connected to electricity Road, headlamp, which is in, illuminates state；After rolling screen door closure, the contact-making switch open circuit of respective layer, headlamp is in OFF state.

7. the low lift work platform of accident rate according to claim 1, it is characterised in that: the anti-fall hook includes From one end by pivot and the carrying platform frame rotate connection ontology, be arranged in described ontology the other end and formation There is the hook portion of hanging buckle slot, wherein the draw bar is connected in the chain and the hook portion, when the draw bar After the active force for losing the chain, the anti-fall hook is overturn under self weight to the safety zone.

8. the low lift work platform of accident rate according to claim 7, it is characterised in that: the section of the cross bar is in side Shape, the hook portion are hung on the cross bar from the hanging buckle slot being arranged downward, and the hook portion includes being arranged in institute The extension side mode stated extension of module of the ontology far from the pivot ends, the extension of module outer end is set and is extended downwardly Block, wherein the extension of module and the side composition hanging buckle slot for hanging side mode block and the body upper part, and when extension When hook portion is hung on the cross bar, the hook portion is engaged on the cross bar from the hanging buckle slot.

9. the low lift work platform of accident rate according to claim 1, it is characterised in that: the draw bar is flexible Bar.

10. the low lift work platform of accident rate according to claim 1, it is characterised in that: the safe anti-falling is fallen Mechanism further includes the connector for the hooked ends of the anti-fall hook and the carrying platform frame to be connected to each other, wherein described Connector opened or folding is arranged as the anti-fall hook is overturn, and the connector includes being rotatablely connected from one end And can open within the scope of 0 ~ 180 ° or the first strut and the second strut of folding, wherein first strut and the second strut Being connected on the hooked ends and the carrying platform frame of rotating respectively of the other end, anti-fall linked up with to described when described Safety zone overturn when, first strut and the second strut gradually strut, until it is described it is anti-fall be hung on the cross bar after, First strut and the second strut are on the same line.