CN210795692U - Anti-extrusion mechanism and operation platform thereof - Google Patents
Anti-extrusion mechanism and operation platform thereof Download PDFInfo
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- CN210795692U CN210795692U CN201921532762.0U CN201921532762U CN210795692U CN 210795692 U CN210795692 U CN 210795692U CN 201921532762 U CN201921532762 U CN 201921532762U CN 210795692 U CN210795692 U CN 210795692U
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Abstract
The utility model relates to a prevent extrusion system technical field specifically is a prevent extrusion mechanism and operation platform thereof, including being used for installing the operation platform protection frame on aerial working platform's rail guard, install on the operation platform protection frame and supply the human body to hold up and can keep away dangerous buffering protective rod to advancing, the front side of keeping away dangerous buffering protective rod is equipped with fixedly keep away the fender backup pad of dangerous buffering protective rod to advancing position for being used for the restriction on the operation platform protection frame, keep away the fender backup pad with keep away and be equipped with in the region between the dangerous buffering protective rod and be used for detecting keep away dangerous buffering protective rod position change information with the position change detection device that triggers alarm system reported to the police, prevent that the extrusion keeps away the dangerous effect better.
Description
Technical Field
The utility model relates to a prevent extrusion system technical field specifically is a prevent extrusion mechanism and operation platform thereof.
Background
The aerial work platform is used more and more frequently in the society nowadays, and its security receives people's attention more yet, and especially, when circumstances such as barrier appears above the platform or the rear, probably operating personnel does not discover and the machine continues to rise when taking place, then the staff probably is extruded by the barrier, more probably because of operating personnel can't in time loosen operating handle and make the machine continue to rise, finally causes more serious accident etc. exist among the prior art and prevent this kind of extrusion safety device.
The working platform anti-extrusion system and the aerial work platform disclosed in the Chinese patent with the publication number of CN208249834U are characterized in that the working platform anti-extrusion system is arranged on the working platform, the working platform comprises an operating platform, the operating platform comprises an anti-extrusion pull rope which is positioned at the rear side of the operating platform and two ends of the anti-extrusion pull rope are connected with the working platform, at least one end of the anti-extrusion pull rope is connected with a pull rope switch arranged on the working platform, the pull rope switch is connected with an upper controller, and the upper controller is provided with a platform action stopping module. Has the advantages that: the anti-extrusion pull rope connected with the pull rope switch is adopted to detect the extrusion condition, the detection mode is contact type, the false triggering is not easy, the structure is easy to hurt the human body, and the pull rope switch and the pull rope are easy to damage and have poor restorability;
also, as disclosed in chinese patent publication No. CN107257773A, a working platform for preventing continuous involuntary operation includes: a floor structure having a width dimension and a depth dimension; and a safety barrier coupled with the floor structure, a control panel area being cooperable with the safety barrier and including a sensor support bar having a top rail extending along the width dimension and side bars extending substantially perpendicularly from the top rail, each of the side bars including: an upper portion extending inwardly from the top rail along the depth dimension to a curved portion, and a lower portion extending outwardly from the curved portion along the depth dimension to the safety barrier, a platform switch configured to trip when a predetermined force is applied being attached to a sensor support bar by a switch bar, the switch bar being held by a shear member, the entire structure being a fixed structure, being rigid, and being more susceptible to impact on a person and being more restricted in the position of the person, particularly for internally applied pressure switches, requiring a more accurate position to press to make the alarm more effective, and being likely to affect the effectiveness of the alarm or requiring the application of a very large force if the alarm is pressed at a position farther from the pressure switch, there is also a certain probability that the alarm is unsuccessful or there is not little potential safety hazard.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a prevent extrudeing mechanism that extrusion hedge effect is better.
The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides an anti-extrusion mechanism, is including being used for installing the operation platform protection frame on aerial working platform's rail guard, install on the operation platform protection frame and supply the human body to hold up and can keep away dangerous buffering protective rod to the advancing, the front side of keeping away dangerous buffering protective rod is equipped with to be fixed be used for the restriction on the operation platform protection frame and keep away the fender backup pad of dangerous buffering protective rod to the advancing position, keep off the backup pad with keep away the regional interior position change detection device who is used for detecting of dangerous buffering protective rod position change information is reported to the police in order to trigger alarm system.
In the above scheme, when an operator is extruded or is about to be extruded, the operator can lean against the danger avoiding buffering protection rod to move forward through the body so that the position of the danger avoiding buffering protection rod changes, the danger avoiding buffering protection rod position change information is detected through the position change detection device to inform the alarm system that the operator is in a dangerous situation and stops the continuous operation of the workbench, and the position change information of the danger avoiding buffering protection rod is fed back to the alarm system to realize.
As right the utility model discloses a preferred, keep off the backup pad before with it is right to keep away to install between the dangerous buffering fender rod keep away dangerous buffering fender rod process of advancing and cushion and enable keep away the elastic buffer that dangerous buffering fender rod resets by oneself.
As right the utility model discloses an it is preferred, it extends and is located to keep away about being fixed with on the dangerous buffering guard bar preceding actuating arm that keeps off the backup pad rear, elastic buffer device is including fixing the articulated seat of the rear side board face department of preceding fender backup pad and the actuating arm with the linkage arm that is connected with between the articulated seat, the rear end position of linkage arm with connect through the articulated axle of the first articulated of extending from top to bottom between the actuating arm, the rear end position of linkage arm with connect through the articulated axle of the second of extending from top to bottom between the articulated seat, first articulated axle with there is one section interval space in the second articulated axle between left and right directions, elastic buffer device still includes and makes the linkage arm is round the second articulated axle is being cushioned and can make when rotating forward the elastic component that the linkage arm resets.
As right the utility model discloses a preferred, the preceding fender backup pad with keep away and be provided with two sets of between the dangerous buffering guard bar elastic buffer.
As right the utility model discloses a preferred, it has a actuating arm on the buffering protection rod to keep away dangerous, and is two sets of elastic buffer device is connected respectively through respective first articulated shaft on the actuating arm and control interval arrangement, two sets of linkage arm among the elastic buffer device is unanimous round respective second articulated shaft direction pivoted forward.
Preferably, the elastic member is a torsion spring.
As right the utility model discloses a preferred, one side torque arm setting of elastic component is in articulated seat department, the opposite side torque arm setting of elastic component is in linkage arm department.
As right the utility model discloses a preferred, preceding fender backup pad with keep away in the region between the dangerous buffering fender rod lean on keep away the dangerous buffering fender rod left and right ends's position is equipped with a set ofly respectively position change detection device.
It is right the utility model discloses a preferred, position change detection device is including installing keep away metal detection body and setting on the buffering protection rod that risks are in the proximity switch in metal detection body the place ahead.
As right the utility model discloses a preferred, the preceding backup pad with keep away dangerous buffering guard bar's peripheral parcel has a flexible lag.
Another object of the present invention is to provide a work platform with higher safety.
The above technical purpose of the present invention can be achieved by the following technical solutions: a work platform is provided with a base for an operator to stand on and a guard rail arranged on the base, wherein the guard rail is provided with the anti-extrusion mechanism.
The utility model has the advantages that: the utility model provides a reliability that structure warning triggered is better for the security greatly promotes, and is preventing the extrusion to keep away the protectiveness of dangerous in-process better to the human body, and the stability and the maneuverability of structure itself are all better, and long-term use is difficult to bad, also adapts to various different environment operations more easily.
Drawings
Fig. 1 is a schematic perspective view of a right side view of a disassembled state in an installation process of an anti-extrusion mechanism and a protection frame in embodiment 1 of the present invention;
FIG. 2 is a schematic perspective view of the right end cap of the anti-extrusion mechanism of FIG. 1 about to be installed;
FIG. 3 is a schematic perspective view of the anti-extrusion mechanism of FIG. 2 configured with a flexible protective sleeve and mounted to a protective frame;
FIG. 4 is a schematic perspective view of the anti-extrusion mechanism of FIG. 3 from a left side with the flexible protective cover and the left end cap removed;
FIG. 5 is a schematic perspective view of the anti-extrusion mechanism shown in FIG. 3, showing a rear view angle of the danger prevention buffering guard bar being disassembled to the rear after the flexible protective sleeve is removed;
FIG. 6 is a schematic perspective view of the front cover supporting plate, the upper cover plate and the lower cover plate of FIG. 5 after being disassembled;
FIG. 7 is an enlarged view taken at I in FIG. 6;
FIG. 8 is a schematic perspective view of the anti-extrusion mechanism shown in FIG. 3 with the flexible protective sleeve removed and the front support plate, the upper cover plate and the lower cover plate detached;
FIG. 9 is a schematic perspective view of the flexible protective cover;
fig. 10 is a schematic perspective view of the anti-squeezing mechanism mounted to the guard rail;
fig. 11 is a schematic perspective view of embodiment 4.
In the figure: 1. an operation platform protection frame, 2, a danger avoiding buffer protection rod, 3, a front baffle support plate, 4, an elastic buffer device, 4a, a driving arm, 4b, a hinged seat, 4C, a linkage arm, 41, a first hinged shaft, 42, a second hinged shaft, 412, a spacing space, 43, an elastic piece, 21a, a metal detection body, 22a, a proximity switch, 5, a flexible protective sleeve, 7, a base, 8, a protective guard, 10, a protective frame, 11, a protective rod, a1, an operation platform, 100, a right-angle connecting piece, 200, a reinforcing plate, 4b1, a hinged main plate, 4b2, a hinged upper plate, 4b3, a hinged lower plate, 4C1, a side linkage plate, 4C2, an upper linkage plate, 4C3, a lower linkage plate, 4a1, a driving main plate, 4a2, a driving upper plate, 4a3, a driving lower plate, 31, an upper cover plate, 32, a lower cover plate, 301, a C-shaped surrounding area, 21, a main protection plate, 22. the upper protection plate, 23, the lower protection plate, 201, the upper arc part, 202, the lower arc part, 300a, the rear upper mask, 300b, the rear lower mask, 400, the pin shaft, 40, the interference prevention notch, 222, the end cover, 211, the fixing plate, 212, the trigger plate, 30, the positioning frame, 3011 and the window.
Detailed Description
The following specific embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent laws and protection within the scope of the present invention.
Embodiment 1, as shown in fig. 1 to 10, an anti-extrusion mechanism includes an operation platform protection frame 1 for being installed on a guard rail 8 of an aerial work platform, where the operation platform protection frame 1 may be an existing conventional protection frame, an operation platform a1 is disposed in a protection area of the protection frame, an emergency buffer protection rod 2 for supporting a human body and capable of advancing is installed on the operation platform protection frame 1, the emergency buffer protection rod 2 preferably extends in a left-right direction, and the left-right direction mentioned herein can be understood as a direction observed from a viewing angle when an operator normally operates behind the emergency buffer protection rod 2, so that the operation platform a1 is in front of the emergency buffer protection rod 2 and the operator is behind the emergency buffer protection rod 2, and in addition, a front side of the emergency buffer protection rod 2 is further provided with a front stop support fixed on the operation platform protection frame 1 for limiting the emergency buffer protection rod 2 from advancing to an advanced position The front baffle supporting plate 3 is also positioned in front of the danger avoiding buffering protection rod 2, but the front baffle supporting plate 3 is positioned between the operating platform a1 and the danger avoiding buffering protection rod 2, and in an initial normal state, the front baffle supporting plate 3 is arranged to be parallel to the danger avoiding buffering protection rod 2 as much as possible, so that a better stress effect can be achieved, certain deviation slightly exists, for example, the deviation within 5 degrees can be accepted, the front baffle supporting plate 3 can adopt a structure which extends in the left-right direction and has a plate surface facing in the front-back direction, and in addition, a position change detection device for detecting position change information of the danger avoiding buffering protection rod 2 to trigger alarm of an alarm system is also required to be arranged in an area between the front baffle supporting plate 3 and the danger avoiding buffering protection rod 2. The danger avoiding buffering protection rod 2 is required to be kept still in an initial state, when abnormal conditions such as extrusion of an obstacle occur, an operator can move forward to lean against the danger avoiding buffering protection rod 2 and push forward for a certain distance to enable the danger avoiding buffering protection rod 2 to generate position change, the position change detection device can detect the position change of the danger avoiding buffering protection rod 2 and inform the alarm system of the information to stop the operation of the operation platform, and the alarm can be given through devices such as sound alarm and light alarm, so that the extruded condition can be processed in time, the position change detection device can be connected to the alarm system through conventional modes such as wired or wireless modes, and the alarm system is triggered to give an alarm through feedback of the position information change. Wherein, keep away dangerous buffering protection rod 2's distance of advancing should surpass 5mm as far as possible, let operating personnel topple over forward in the same place and by one section buffer distance for operating personnel has one section space that moves forward, can also receive the shielding of operation platform protection frame 1 itself better, can further improve the security, the distance of advancing of certainly keeping away dangerous buffering protection rod 2 need not exceed 100mm as far as possible, too long distance of advancing, can influence the response speed of reporting to the police, if not in time report to the police have the potential safety hazard, the position of preceding fender backup pad 3 also need according to keep away the distance of advancing that dangerous buffering protection rod 2 chooseed for use come the cooperation can.
Keep away and can support between dangerous buffering protection rod 2 and the preceding fender backup pad 3 and adopt telescopic spring or cylinder isotructure connection between the front and back, keep away dangerous buffering protection rod 2 and remain static motionless initially, when preventing extrudeing and keeping away dangerous, operating personnel can directly support and keep away dangerous buffering protection rod 2 buffering forward and make its emergence position shift forward change and report to the police and shut down work platform, the front side has the support of preceding fender backup pad 3, can make after the compression of spring or cylinder isotructure keep away dangerous buffering protection rod 2 restriction in a certain position, the distance of advancing of keeping away dangerous buffering protection rod 2 is confirmed according to actual conditions or operating personnel's hobby, and can make corresponding adjustment with the front and back position of the position of preceding fender backup pad 3 through the selection of the concrete model of spring or cylinder isotructure. In addition, when operating personnel through report to the police and wait to get back to normal condition after the emergency state is got rid of, keep away dangerous buffering guard bar 2 and can also rely on these extensible parts of aforesaid effectively to reset, and at the in-process that keeps away dangerous advancing, this kind of extensible part makes the effect of the buffering of advancing obtain very big promotion, the effect can be better, but this kind of connection structure is fairly simple, stability is a bit poor, especially when operating personnel application of force is inhomogeneous or application of force direction is not forward the circumstances such as forward, the structure itself damages easily, probably can cause the damage of keeping away dangerous buffering guard bar 2 and position change detection device.
Some more effective connection modes are recommended below this embodiment, the main structure of the existing operation platform protection frame 1 is generally composed of two left and right protection frames 10 and a protection rod 11 located above the two protection frames 10 and bridged between the two protection frames, the front baffle support plate 3 is arranged at the position of the left and right protection frames 10 near the rear side, the part of the front side plate surface of the front baffle support plate 3 near the left end thereof and the left protection frame 10 can be fixedly connected through a left right-angle connector 100, the part of the front side plate surface of the front baffle support plate 3 near the right end thereof and the right protection frame 10 can be fixedly connected through a right-angle connector 100 on the right side, the part of the right-angle connector 100 near the protection frame 10 and the protection frame 10 can be provided with left and right corresponding communication holes and fixed through left and right locking bolts, the part of the right-angle connector 100 near the front baffle support plate 3 and the front baffle support plate 3 can be provided with front and back For locking bolting, the right angle connector 100 may be used with existing standard components.
An elastic buffer device 4 which buffers the advancing process of the danger avoiding buffer protection rod 2 and enables the danger avoiding buffer protection rod 2 to reset automatically is arranged between the front baffle support plate 3 and the danger avoiding buffer protection rod 2, so that the elastic buffer device 4 is a key place, can adopt the simple structure and can adopt the following structure: a driving arm 4a which extends left and right and is positioned behind the front baffle supporting plate 3 is preferably further fixed on the danger prevention buffer protection rod 2, the elastic buffer device 4 preferably comprises a hinged seat 4b fixed at the rear side plate surface of the front baffle supporting plate 3 and a linkage arm 4c connected between the driving arm 4a and the hinged seat 4b, the rear end part of the linkage arm 4c is hinged with the driving arm 4a through a first hinge shaft 41 extending up and down, the rear end part of the linkage arm 4c is hinged with the hinge seat 4b through a second hinge shaft 42 extending up and down, the first hinge shaft 41 and the second hinge shaft 42 have a spacing space 412 in the left and right direction, the elastic buffer device 4 further comprises an elastic member 43 which enables the linkage arm 4c to be buffered when rotating forwards around the second hinge shaft 42 and enables the linkage arm 4c to be reset. The structural form here refers to the structural form in the initial state, the linkage arm 4c has a front end portion and a rear end portion, that is, the linkage arm 4c does not extend left and right, and the left and right spacing spaces 412 are designed, so that the connecting line direction of the first hinge shaft 41 and the second hinge shaft 42 is obliquely forward, and therefore the linkage arm 4c also extends obliquely forward, and then the linkage arm 4c is not parallel to the danger avoiding buffering protection rod 2, and the deflection angle between the two is preferably more than 10 degrees and preferably controlled within 60 degrees, because if the linkage arm is 60 to 90 degrees, the linkage arm is slightly close to the vertical state, so the lever effect of the linkage arm 4c is poor, which is not beneficial for people to push forward, and also causes the extending distance of the front and rear structures to be too long, the linkage arm 4c can be designed to extend left forward or right forward, when an operator pushes the danger avoiding buffering protection rod 2, because the front baffle support plate 3 is in a fixed state and the hinge seat 4b is fixed on the front baffle support plate 3, the position of the second hinge shaft 42 is in a stable and unchangeable state, two ends of the linkage arm 4c are hinged, one end of the driving arm 4a is in a non-fixed state and is a free end, so that the linkage arm 4c can rotate around the second hinge shaft 42, when danger avoiding, a person applies forward force, the rear end parts of the linkage arm 4c and the driving arm 4a which are hinged through the first hinge shaft 41 can rotate around the second hinge shaft 42 and swing backwards and forwards, the driving arm 4a and the linkage arm 4c are hinged together through the first hinge shaft 41, namely, the whole hinge structure at the position of the first hinge shaft 41 can swing forwards along with the rear end of the linkage arm 4c, the driving arm 4a can move forward along with the hinge structure at the first hinge shaft 41, and in addition, although the driving arm 4a and the linkage arm 4c can have rotational freedom on the first hinge shaft 41, when the danger prevention buffer protection rod 2 is located at the position where the driving arm 4a is hinged on the first hinge shaft 41 and is forced forward, the whole driving arm 4a can keep moving forward straight and has displacement with a small distance in the left-right direction, because the linkage arm 4c swings in an arc manner around the second hinge shaft 42 in a forward rotating manner, the hinge of the first hinge shaft 41 has displacement change in the left-right direction, but can move forward, especially when the danger prevention buffer protection rod 2 is pushed to keep the driving arm moving forward straight left-right, the rear end of the linkage arm 4c also moves forward, and when the danger prevention buffer protection rod 2, 4a or the linkage arm 4c has a part to generate an acting force abutting against the front stop support plate 3, just can be with the position restriction, keep away dangerous buffering protection rod 2 and just can not continue to go ahead, and this embodiment suggests that keep away the front side position of dangerous buffering protection rod 2 and keep off backup pad 3 with the front and lean on spacingly, and this kind is supported and is limited not to direct contact, but indicates the effect that the power supported between the two, has specific structural description later, and the rear side plate face of front fender backup pad 3 can further lean on and lean on the reinforcing plate 200 who is fixed with the confession and keeps away dangerous buffering protection rod 2 front side position striking spacing. The elastic part 43 can be directly connected between the danger avoiding buffering protection rod 2, the driving arm 4a or the linkage arm 4c and the front baffle support plate 3 by adopting a spring, so that the danger avoiding buffering protection rod 2 can better buffer and advance and can reset in the later period.
In the above-mentioned solution, if the set of elastic buffer devices 4 is used, there is a problem in that, if the danger prevention buffer protection rod 2 is required to move forward relatively straight left and right, a force is applied at a position where the danger prevention buffer protection rod 2 is located at the hinge of the driving arm 4a at the first hinge shaft 41, because if an operator applies a force at the deviated position of the first hinge shaft 41, the danger prevention buffer protection rod 2 itself deflects around the first hinge shaft 41, which may affect the use effect, therefore, it is further preferable to provide another supporting point structure on the danger prevention buffer protection rod 2, so that the danger prevention buffer protection rod 2 can keep moving forward relatively straight regardless of the position where the operator pushes forward, and a linkage structure capable of following the elastic buffer device 4 can be provided at other positions between the danger prevention buffer protection rod 2 and the front baffle supporting plate 3, a better solution is recommended in this embodiment, that is, a set of elastic buffer device 4 is further provided, that is, two sets of elastic buffer devices 4 are provided between the front fender supporting plate 3 and the risk avoidance buffer protection rod 2. The structure can ensure that the danger avoiding buffering protection rod 2 applies force on each part of the danger avoiding buffering protection rod, and can well move forwards straightly and trigger alarm. Preferably, only one driving arm 4a is arranged on the danger avoiding buffer protection rod 2 and is positioned at the position close to the middle of the danger avoiding buffer protection rod 2;
further, two groups of the elastic buffer devices 4 are respectively connected to the driving arms 4a through respective first hinge shafts 41 and arranged at left and right intervals, the direction of forward rotation of the linkage arms 4c of the two groups of the elastic buffer devices 4 around respective second hinge shafts 42 is the same, that is, in an initial state, the two linkage arms 4c of the two groups of the elastic buffer devices 4 are all in the same extending direction, for example, both towards the left front or both towards the right front, so that a parallelogram stressed structure is formed between the two first hinge shafts and the two second hinge shafts, and the position of the second hinge shaft 42 is stable, the two linkage arms 4c can synchronously perform forward swinging motions at the same time, and as the two first hinge shafts form two stable pivot points on the same driving arm 4a, during the traveling process, the whole stress structure always keeps a parallelogram structure, certainly, the connecting line direction of the two second hinge shafts keeps extending in the left-right direction as much as possible, so that the front and the rear of the parallelogram structure can always keep extending in the left-right direction, and the rear part of the driving arm 4a at one side can always keep extending in the left-right direction and move forward straightly, so that the driving arm 4a can better keep moving straight no matter where the driving arm 4a applies forward force, in the embodiment, the straight forward direction of the driving arm 4a or the danger avoiding buffering protection rod 2 means that the driving arm 4a or the danger avoiding buffering protection rod 2 always keeps extending in the left-right direction and moves forward in the advancing process, certainly, certain angle deviation can be provided, the driving arm can be used, the effect is not poor, but the driving arm 4a is not forced to move forward as much as possible, the driving arm 4a is inclined forward by 30 degrees, which may cause the structure to be unstable, may be easily broken, and may affect the use effect. According to the scheme of the embodiment, the operability is better, an operator can have more operation spaces, the effectiveness of alarming during operation can be basically kept consistent, and the problem of large effectiveness deviation during operation on each part of the danger avoiding buffering protection rod 2 is solved. Further structural design;
in this scheme, the elastic member 43 may be preferably a torsion spring, and a torsion arm on one side of the elastic member 43 is disposed at the hinge seat 4b, and a torsion arm on the other side of the elastic member 43 is disposed at the linkage arm 4c, where the torsion arm on one side and the torsion arm on the other side of the mentioned torsion spring refer to two different force-receiving sides of the torsion spring, because, if the torsion spring adopts a double torsion spring, there will be two torsion arms on the same force-receiving side, and if it is a single torsion spring, there will be one torsion arm on each of the two force-receiving sides. Other specific structural designs may be preferred here as follows: the hinge seat 4b may adopt a conventional hinge seat structure, for example, the hinge seat 4b includes a hinge upper plate 4b2 and a hinge lower plate 4b3 integrally connected to and located at the rear side of the hinge main plate 4b1 and attached to the upper and lower ends of a hinge main plate 4b1 and a hinge main plate 4b1 respectively fixed to the rear side plate of the front shield support plate 3, the hinge main plate 4b1 is upright, and the hinge upper plate 4b2 and the hinge lower plate 4b 8259645 are flat-shaped, if the linkage arm 4c is initially located at the right front side, the linkage arm 4c may be optimized to include a side linkage plate 4c1 extending obliquely to the right front side and an upper linkage plate 4c2 and a lower linkage plate 4c3 integrally connected to and located at the upper and lower sides of the side linkage plate 4c1 respectively, the side linkage plate 4c1 is upright, the upper linkage plate 4c2 and the lower linkage plate 4c3 are flat-shaped and also inclined to the right front side, and the upper linkage plate 4c2 and the lower linkage plate 3 are located at one side of the front shield support plate 3 and attached to the front shield support plate 4c3 In the region where the front end portion of the upper link plate 4c2 and the front end portion of the lower link plate 4c3 are located between the hinged upper plate 4b2 and the hinged lower plate 4b3 and the front end portions of the hinged upper plate 4b2 and the hinged lower plate 4b3 and the front end portion of the upper link plate 4c2 and the front end portion of the lower link plate 4c3 are vertically passed through the second hinge shaft 42, and are hinged together, a torsion arm on the force receiving side of a torsion spring may be abutted against the plate surface of the side link plate 4c1 and located at a position between the upper link plate 4c2 and the lower link plate 4c3, a coil of the torsion spring is fitted over the portion of the second hinge shaft 42 located between the front end portion of the upper link plate 4c2 and the front end portion of the lower link plate 4c3, and a torsion arm on the force receiving side of a torsion spring may be inserted into the hinged main plate 4b1, or inserted into the front stopper support plate 3, or both the hinged main plate 4b1 and the hinge shaft 3, all of them can be a good buffer component, which can make the danger-avoiding buffer protection rod 2 exert the buffer effect through the torsion arm to the linkage arm 4c during the danger-avoiding advance process, then the linkage arm 4c returns to the normal state because the torsion spring accumulates the potential energy after compressing, and the driving arm 4a can be designed to include the driving main board 4a1 extending in the left and right direction, and the driving upper board 4a2 and the driving lower board 4a3 extending in the left and right direction, which are connected to the upper and lower sides of the driving main board, the driving main board 4a1 is vertical, the driving upper board 4a2 and the driving lower board 4a3 are flat, the driving upper board 4a2 and the driving lower board 4a3 are arranged in the area near the front side of the driving main board 4a1, the rear end part of the upper linkage board 4c2 and the rear end part of the lower linkage board 4c3 are between the driving upper board 4a2 and the driving lower board 4a3, the driving upper plate 4a2 and the driving lower plate 4a3, and the rear end portions of the upper link plate 4c2 and the lower link plate 4c3 are hinged together by vertically passing the first hinge shaft 41, and the two sets of elastic buffer means 4 are provided such that the first hinge shafts 41 of the two sets of elastic buffer means 4 are respectively provided at the portions of the driving arms 4a near both ends. For the front shield support plate 3, the upper and lower sides of the front shield support plate 3 may be respectively and integrally connected with an upper cover plate 31 and a lower cover plate 32 located in the rear region of the front shield support plate 3, the upper cover plate 31 and the lower cover plate 32 may form a C-shaped surrounding region 301 with a backward opening, the upper cover plate 31 and the lower cover plate 32, and the danger avoiding buffer protection rod 2 may preferably include a main protection plate 21 extending left and right and an upper protection plate 22 and a lower protection plate 23 also extending left and right and integrally connected with the upper and lower sides of the main protection plate 21, respectively, the main protection plate 21 is upright, the upper protection plate 22 and the lower protection plate 23 are located in the front region of the main protection plate 21 and are in a flat-lying shape, the driving arm 4a may be interposed between the upper protection plate 22 and the lower protection plate 23 and located at a position between the left and right of the, the upper driving plate 4a2 and the lower driving plate 4a3 are sandwiched between the upper protection plate 22 and the lower protection plate 23, the main driving plate 4a1 can abut against the front side surface of the main protection plate 21, the rear side portion of the upper protection plate 22 and the upper side portion of the main protection plate 21 are integrally connected and transited by the upwardly arched upper arc portion 201, the rear side portion of the lower protection plate 23 and the lower side portion of the main protection plate 21 are integrally connected and transited by the downwardly arched lower arc portion 202, so as to achieve better protection effect on human body and improve structural stability, the upper protection plate 22 is preferably located at a position below the upper covering plate 31, and the lower protection plate 23 is preferably located at a position above the lower covering plate 32, so that the upper and lower protection plates 22 and 23 can enter the C-shaped surrounding area 301 formed by the front supporting plate 3, the upper covering plate 31 and the lower covering plate 32 and can achieve forward and backward movements of the danger avoiding buffer protection rod 2 at the area, moreover, keep off the backup pad 3 before, go up the apron 31 and cover 32 and main guard plate 21 down, go up apron 22 and lower guard plate 23 and can form a more complete enclosure space, enclose the structure of inside, play the effect of better structural protection, it is also more pleasing to the eye, keep away dangerous buffering fender rod 2 about length as far as possible with keep off the backup pad 3 before, go up apron 31 and cover 32 down the respective length of controlling of these three keep unanimous, actuating arm 4a needn't be too long, actuating arm 4a length design for keep away dangerous buffering fender rod 2 about half length can and set up in the intermediate position of keeping away dangerous buffering fender rod 2 suitable, because its both sides space sets up other structure like this. In addition, a rear upper mask 300a, which is transitioned through a rounded corner and extends downward, is preferably integrally connected to a rear side edge of the upper shield 31, and a rear lower mask 300b, which is transitioned through a rounded corner and extends upward, is preferably integrally connected to a rear side edge of the lower shield 32, the rear upper mask 300a still being higher than the upper shield 22, and the rear lower mask 300b still being lower than the lower shield 23.
Further, the upper guard plate 22 and the lower guard plate 23, and the driving upper plate 4a2 and the driving lower plate 4a3 may be further connected together by two pins 400 extending vertically, and the front side portions of the upper guard plate 22 and the lower guard plate 23 should be located at a front point before the front side portions of the driving upper plate 4a2 and the driving lower plate 4a3, as mentioned above, because the present embodiment suggests that the front side portions of the danger avoiding bumper guard bar 2 abut against the front bumper support plate 3 for limiting, that is, the front side portions of the upper guard plate 22 and the lower guard plate 23 abut against the front bumper support plate 3 for limiting, or the front side portions of the upper guard plate 22 and the lower guard plate 23 abut against the reinforcement plate 200 directly before and then abut against the front bumper support plate 3 for limiting, the reinforcement plate 200 may be provided with two pins and located at the right side of the hinge seat of the left side elastic bumper 4 and the right side of the hinge seat of the right side elastic bumper 4, the reinforcing plate 200 is disposed at a position close to the right-angle connecting member 100 as much as possible to enhance the structural strength thereof, and of course, the reinforcing plate 200 and the elastic buffer means 4 are disposed between the upper covering plate 31 and the lower covering plate 32 to protect the internal structure. In addition, interference-preventing notches 40 need to be formed in the front side parts of the upper protection plate 22 and the lower protection plate 23 and the front side parts of the driving upper plate 4a2 and the driving lower plate 4a3, and the interference notches 40 mainly avoid the danger-avoiding buffering protection rod 2 from colliding with the second hinge shaft 42 or the hinge seat in the moving process, so that the whole mechanism runs smoothly and reliably;
because the danger-avoiding buffering protection rod 2 is formed by the main protection plate 21, the upper protection plate 22 and the lower protection plate 23, the left end and the right end are not sealed, the left end and the right end are respectively provided with the end covers 222 to be inserted on the end openings, the integrity of the structure is improved, and in addition, the adverse effect that the positions which are not sealed have the pricking effect on a human body is prevented.
The hinge seat, each plate and the end cover can be made of hard material structural parts such as metal parts or polymer composite parts, the fixing mode can be realized by bolt, screw and the like which are fixed in a screwed mode or welding and the like, and the integrated connection can be realized by adopting an integrated forming or integrated bending forging process and the like.
Holistic structure, exert certain driving force when operating personnel need report to the police, make promptly keep away dangerous buffering protection rod 2 and produce the regional position change of front side, in order to report to the police, and report to the police, rely on the resilience force of torsional spring itself, just can reset keeping away dangerous buffering protection rod 2, the advantage of this structure lies in, it needs to resist certain torsional spring elasticity to promote to keep away dangerous buffering protection rod 2, can prevent the wrong report police that action such as dabbing produced when normal operation in the past at ordinary times, can also effectively reset, and when the human body receives the extrusion in-process, the position of human body has more antedisplacement to keep away the dangerous space, and better buffering effect has, can not cause equipment or human loss because of too big impact.
Certainly, the emergency protection device can be used by being matched with an existing foot switch for operation, when an operator is extruded, the emergency protection buffering rod 2 is pushed by the operator, a controller in the alarm system controls the operation platform to stop all functional actions after receiving position change information, and an audible and visual alarm is controlled to give out sound alarm and light alarm to inform related personnel of emergency treatment. The working process can be performed as follows:
triggering: the danger-avoiding buffering protection rod 2 is pushed to change the position and inform a controller in the alarm system of the information, the controller stops the working platform to act, and meanwhile, signals of the operating platform need to be shielded;
and (3) recovering: the controller can also detect the reset state and the pedal switch state of the danger avoiding buffering protection rod 2, and if the danger avoiding buffering protection rod 2 is recovered to the normal initial state from the extrusion state and the pedal switch is recovered to the non-treading state from the treading state and then enters the treading state, the controller starts to respond to the signal of the operation platform.
When the main arm is triggered, the controller also controls the audible and visual alarm to give an alarm and detects the working state of the main arm, and if the main arm is in a lifting state, the controller controls the main arm to stop lifting and descend for setting descending time; and if the main arm is in the extending state, the controller controls the main arm to stop extending and retract for setting the retraction time.
And when the operation platform is recovered, the controller starts to respond to the signal of the operation platform and controls the audible and visual alarm to stop alarming.
In addition, when the extrusion condition occurs, the working platform can descend by a certain height, so that the workers can be effectively prevented from being injured; the recovery step needs to reset the danger avoiding buffer protection rod 2 and the foot switch in sequence, so that the false recovery of the anti-extrusion system after being triggered can be prevented.
and a group of position change detection devices are respectively arranged at the positions close to the left end and the right end of the danger avoiding buffering protection rod 2 in the area between the front baffle support plate 3 and the danger avoiding buffering protection rod 2. If the left side and the right side are provided with the position change detection devices, the alarm reliability can be greatly improved.
The position change detection device includes a metal detection body 21a attached to the safety lever 2 and a proximity switch 22a provided in front of the metal detection body 21 a. Thus, the metal detection body 21a approaches the proximity switch 22a forward as the danger prevention buffer protection rod 2 moves forward, and can be detected by the proximity switch 22a, the proximity switch 22a can indicate that the danger prevention buffer protection rod 2 is pushed by an operator to alarm by detecting the metal detection body 21a, the proximity switch 22a can drive the proximity switch 22a to actuate by detecting the metal detection body 21a to drive a controller of the alarm system to provide a control command to stop the operation of the working platform, and other series of danger prevention actions, the metal detection bodies 21a in the two sets of position change detection devices can be fixed on the front side portion of the main protection plate 21 and respectively located on the left and right sides of the driving arm 4a, further, the metal detection body 21a can comprise a fixed plate 211 fixedly connected with the front side portion of the main protection plate 21 and a trigger plate 212 extending forward integrally connected with the fixed plate 211, the proximity switch 22a mainly detects the position change information of the trigger plate 212, that is, when the trigger plate 212 approaches the proximity switch 22a, an alarm can be triggered. And the proximity switch 22a may be provided at a position close to only the reinforcing plate 200, and the proximity switch 22a may be installed as follows: the portion of each right angle connector 100 close to the front block support plate 3 is provided with a slot to insert and connect two positioning frames 30 which pass through the front block support plate 3 backwards and are arranged in parallel left and right, of course, the positioning frames 30 can be installed on the right angle connector 100 by the above fixing method, but the inserting or clamping method is more beneficial for dismounting, maintenance and the like, the positioning frames 30 can also adopt hard structural components such as metal pieces or polymer composite material structural components, the frame body passing direction of the positioning frames 30 faces to the left and right direction, the approach switch 22a extends and is clamped in the two positioning frames 30 left and right, the front block support plate 3 should be provided with a front and back through window 3011 for the approach switch 22a and the positioning frames 30 to penetrate into the C-shaped surrounding area 301 backwards, and the reinforcement plate 200 is preferably also at a position close to the approach switch 22a, therefore, further preferably, the reinforcement plate 200 is also provided with the window 3011 and corresponds to the window 3011 of the front block support plate, thus, the proximity switch 22a and the positioning frame 30 can be inserted into the C-shaped surrounding area 301, and it is noted that, in the initial state, the proximity switch 22a is located at a position before the trigger plate 212, so that a good state change process from non-triggered state to triggered state can be achieved.
The position change detection device can also be designed by other schemes, and comprises a magnetic induction switch and a magnetic block, wherein the installation mode of the magnetic induction switch can be similar to that of a proximity switch, and the installation mode of the magnetic block can be similar to that of a metal detection body 21a, when the danger avoiding buffering protection rod 2 is pushed to advance and generate position change, the magnetic block also advances and triggers the switch state switching of the magnetic induction switch to reflect the position change and feed back an alarm system for alarming;
or the position change detection device can directly adopt a displacement sensor with higher precision and install the displacement sensor to the metal detection body 21a, so that when the position of the danger avoiding buffering protection rod 2 changes, the position change detection device can feed back to alarm;
the position change detection device may include an infrared receiver and an infrared transmitter, and may be mounted in a manner similar to that described above, so that when the receiving state of the infrared signal changes, the position change information can be fed back to alarm, where the change of the infrared signal received by the infrared receiver is fed back to an alarm system.
These schemes can be used for different scenes, for example, the magnetic induction switch is not recommended in places with large magnetic field influence, so that the position change detection device can be selected in different scenes, and the selectivity and the applicability of the whole mechanism can be greatly improved.
The main structure of this embodiment can certainly adopt current work platform, and the difference is just in installing the anti-extrusion mechanism of this application new design.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides an anti-extrusion mechanism, includes operation platform protection frame (1) that is used for installing on aerial working platform's rail guard (8), its characterized in that: the safety protection device is characterized in that a danger avoiding buffering protection rod (2) which is used for supporting a human body and can advance is mounted on the operating platform protection frame (1), a front baffle supporting plate (3) which is fixed on the operating platform protection frame (1) and used for limiting the danger avoiding buffering protection rod (2) to advance is arranged on the front side of the danger avoiding buffering protection rod (2), and a position change detection device which is used for detecting position change information of the danger avoiding buffering protection rod (2) to trigger an alarm system to give an alarm is arranged in an area between the front baffle supporting plate (3) and the danger avoiding buffering protection rod (2).
2. An anti-racking mechanism as defined in claim 1, further comprising: an elastic buffer device (4) which buffers the advancing process of the danger avoiding buffer protection rod (2) and enables the danger avoiding buffer protection rod (2) to reset automatically is arranged between the front baffle support plate (3) and the danger avoiding buffer protection rod (2).
3. An anti-racking mechanism as defined in claim 2, further comprising: keep away dangerous buffering guard bar (2) and be fixed with and extend about and be located actuating arm (4 a) at preceding fender backup pad (3) rear, elastic buffer (4) including fix hinge seat (4 b) and the actuating arm (4 a) of the rear side board face department of preceding fender backup pad (3) and articulated linkage arm (4 c) that are connected with between hinge seat (4 b), articulated the connection through the first articulated shaft (41) that extends from top to bottom between the rear end position of linkage arm (4 c) and actuating arm (4 a), articulated the connection through the second articulated shaft (42) that extends from top to bottom between the rear end position of linkage arm (4 c) and articulated seat (4 b), first articulated shaft (41) and second articulated shaft (42) have one section interval space (412) between the left and right directions, elastic buffer (4) still include make linkage arm (4 c) round second articulated shaft (42) to the side An elastic part (43) which is buffered when the front rotation is carried out and can lead the linkage arm (4 c) to reset.
4. An anti-racking mechanism as defined in claim 3, wherein: two groups of elastic buffer devices (4) are arranged between the front baffle supporting plate (3) and the danger avoiding buffer protection rod (2).
5. An anti-racking mechanism as defined in claim 4, wherein: the danger avoiding buffering protection rod (2) is provided with a driving arm (4 a), two groups of elastic buffering devices (4) are respectively connected to the driving arm (4 a) through respective first hinged shafts (41) and are arranged at intervals from left to right, and the directions of forward rotation of linkage arms (4 c) in the two groups of elastic buffering devices (4) around respective second hinged shafts (42) are consistent.
6. An anti-racking mechanism as defined in claim 3, wherein: the elastic piece (43) is a torsion spring.
7. An anti-racking mechanism as defined in claim 6, wherein: one side of the elastic piece (43) is provided with a torque arm at the position of the hinged seat (4 b), and the other side of the elastic piece (43) is provided with a torque arm at the position of the linkage arm (4 c).
8. An anti-racking mechanism as defined in claim 4, wherein: and a group of position change detection devices are respectively arranged at the positions close to the left end and the right end of the danger avoiding buffering protection rod (2) in the area between the front baffle supporting plate (3) and the danger avoiding buffering protection rod (2).
9. An anti-racking mechanism as defined in claim 1, further comprising: the position change detection device comprises a metal detection body (21 a) arranged on the danger avoiding buffering protection rod (2) and a proximity switch (22 a) arranged in front of the metal detection body (21 a).
10. A work platform having a base (7) on which an operator stands and a guard rail (8) mounted on the base (7), characterized in that: an anti-squeezing mechanism as claimed in any one of claims 1 to 9 is mounted on the guard rail (8).
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| CN110589729A (en) * | 2019-09-16 | 2019-12-20 | 浙江鼎力机械股份有限公司 | Anti-extrusion mechanism and operation platform thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110589729A (en) * | 2019-09-16 | 2019-12-20 | 浙江鼎力机械股份有限公司 | Anti-extrusion mechanism and operation platform thereof |
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