CN210620166U - Anti-extrusion device and aerial work platform - Google Patents
Anti-extrusion device and aerial work platform Download PDFInfo
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- CN210620166U CN210620166U CN201921532774.3U CN201921532774U CN210620166U CN 210620166 U CN210620166 U CN 210620166U CN 201921532774 U CN201921532774 U CN 201921532774U CN 210620166 U CN210620166 U CN 210620166U
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Abstract
The utility model relates to a prevent extrusion system technical field specifically is a prevent extrusion device and aerial working platform, including being used for installing the operation platform protection frame on aerial working platform's rail guard, swing joint has an at least measuring staff that supplies the human dependence on the operation platform protection frame, install the position change induction system who is used for triggering alarm system to report to the police on the measuring staff, the security is higher.
Description
Technical Field
The utility model relates to a prevent extrusion system technical field specifically is a prevent extrusion device and aerial working platform.
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 fence, 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 element, the entire structure being a fixed structure, the rigidity being greater, especially in the case of a large pressing force, although alarming, the impact on a person is greater, and the position of the person is more restricted, the danger avoidance effect being insufficient.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a higher prevent extrusion device of security.
The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides an anti-extrusion device, is including being used for installing the operation platform protection frame on aerial working platform's rail guard, swing joint has at least one measuring bar that supplies the human body to lean on the operation platform protection frame, install the position change induction system who is used for triggering alarm system to report to the police on the measuring bar.
Among the above-mentioned scheme, when operating personnel is extruded or will be extruded, operating personnel just can push away the measuring pole through leaning on of health and make the change that the measuring pole takes place the position inform alarm system operating personnel be in dangerous situation and close the continuous operation of workstation, the positional information change of measuring pole detects the back and feeds back to alarm system through position change induction system, just can realize, like this, the human body not only can have certain danger of keeping away and removes the space, can also effectively report to the police simultaneously, the security improves.
As right the utility model discloses a preferred, the test rod rotate connect in on the operation platform protection frame.
As right the utility model discloses a preferred, be fixed with on the operation platform protection frame and be used for the articulated seat of measuring staff.
As right the utility model discloses a preferred, install on the articulated seat and supply the spacing stop device of test bar.
As right the utility model discloses a it is preferred, stop device is including being used for restricting the measuring staff to the wobbling front side spacing block of operation platform direction and being used for restricting the measuring staff to the wobbling rear side spacing board of operating platform direction, the front side spacing block with one section supplies the measuring staff wobbling free activity interval to have between the rear side spacing board.
As a preference to the present invention, the rear side limiting plate is a part of the hinge seat.
As right the utility model discloses a preferred, install the elasticity resetting means that supplies the measuring staff to reset on the articulated seat.
As to the utility model discloses a preferred, the test rod supports and leans on the rear side limiting plate.
As right the utility model discloses a preferred, prevent that extrusion device has about two relative measuring sticks and relative tip department all is provided with position change induction system.
As right the utility model discloses a preferred, the position change induction system on one of them measuring pole is the magnetic induction switch, and the position change induction system on another measuring pole is the magnetism piece.
Preferably, at least a part of the surface of the detection rod is an arc-shaped part which can be contacted with an operator.
As right the utility model discloses a preferred, the outside portion parcel of test rod has the buffer layer.
Another object of the utility model is to provide a higher aerial working platform of security.
The above technical purpose of the present invention can be achieved by the following technical solutions: an aerial 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 device.
The utility model has the advantages that: the utility model provides a structural security is higher, and the exactness that the warning was triggered is higher, and is better to human body and equipment self at the protectiveness of preventing that the extrusion is kept away dangerous in-process, and the stability and the recovery nature of structure are better, and long-term use is difficult to damage.
Drawings
Fig. 1 is a partial schematic perspective view of an anti-extrusion device installed on an aerial work platform according to embodiment 1 of the present invention;
FIG. 2 is an enlarged view taken at I in FIG. 1;
fig. 3 is a schematic partial perspective view of an area where one of the detection rods 2 is located, as seen from a front side view angle in embodiment 1 of the present invention.
Fig. 4 is a schematic perspective view of embodiment 4 of the present invention.
In the figure: 1. the operation platform comprises an operation platform protection frame, 2, a detection rod, 3, a position change sensing device, 4, a hinged seat, 5, a limiting device, 51, a front side limiting block, 52, a rear side limiting plate, 512, a free movement interval, 6, an elastic resetting device, 20, a buffer layer, a1, an operation platform, 10, a protection frame, 11, a protection rod, 40, a hinged shaft, 400, a semi-enclosed guide interval, 41, a side plate, 42, an upper plate, 43, a lower plate, 4a, an upper rotating plate, 4b, a lower rotating plate, 4c, a side rotating plate, 60, a torsion spring, 7, a base, 8 and a protective guard.
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, an anti-extrusion device, including an operation platform protection frame 1 for installing on a guard rail of an aerial work platform, where the operation platform protection frame 1 may adopt an existing conventional protection frame, an operation platform a1 is disposed in a protection area of the protection frame, at least one detection rod 2 for leaning on by a human body is movably connected to the operation platform protection frame 1, one or two or even more detection rods 2 may be selected, an initial state of the detection rods 2 can be kept static, when abnormal conditions such as extrusion of an obstacle occur, an operator can touch the detection rod 2 and push a distance to generate a position change, a position change sensing device 3 for triggering an alarm system to alarm is installed on the detection rod 2 in a matching manner, the position change sensing device 3 can send position change information to the alarm system to shut down the operation platform, the device can give an alarm through devices such as sound alarm and light alarm, so that the extrusion condition can be processed in time, the position change sensing device 3 can be connected to an alarm system in a wired or wireless mode, and the alarm system is triggered to give an alarm through feeding back the position information change.
The detection rod 2 enables the detection rod to move between an operator and an operation platform, and due to the design, on one hand, the operator leans forwards to lean against and topple over conveniently and conveniently, on the other hand, the front side area is the area of the operation platform protection frame 1, so that the detection rod has a space for people to move forwards, and the protection of the operation platform protection frame 1 can further improve the safety.
The mode of the swing joint of the detection rod 2 and the operation platform protection frame 1 can be realized by directly adopting a connection structure with compression such as a spring or an air cylinder, the initial state can be kept static, an operator can directly push the detection rod 2 to compress or the air cylinder to generate the position deviation of the detection rod 2 so as to alarm and shut down the operation platform, and the detection rod 2 can effectively reset after being removed in an emergency state when the operator returns to a normal state, but the simple structure is poor in stability and easy to damage, the abnormality of the detection rod 2 or the position change induction device 3 can possibly be caused, and certain potential safety hazards also exist.
The present embodiment recommends a more reliable connection mode, as shown in fig. 1, the detection rod 2 is installed on the operation platform protection frame 1 by a rotation connection mode, and preferably the rotation connection mode is completed by the end of the detection rod 2, 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 bridged between the two protection frames 10 and located above the two protection frames, then the end of one end of the detection rod 2 can be connected to one of the protection frames 10 in a rotation mode, so that the detection rod 2 can rotate around the protection frame 10, further preferably, a hinge seat 4 for hinging the detection rod 2 is fixed on the operation platform protection frame 1, the hinge seat 4 is installed on the protection frame 10, the hinge shaft 40 on the hinge seat 4 should preferably enable the detection rod 2 to rotate around the hinge shaft 40 in a horizontal plane or a plane inclined towards the front lower part or a vertical downward plane to form a position offset Furthermore, the hinge seat 4 is provided with a limiting device 5 for limiting the position of the detection rod 2, and the limit of the limiting device 5 limits the range of motion of the detection rod 2, so that the rotation of the detection rod 2 is only the swing kept in a certain range, that is, the initial position of the detection rod 2 is limited to the offset end position after the detection rod 2 is pushed to generate position change when the operator is in a squeezed state, of course, the detection rod 2 needs to be reset to the initial position after the alarm is finished, and therefore, the detection rod 2 has the ability of swinging back and forth between the two positions.
Specifically, the present embodiment preferably selects a swing manner of the detection rod 2 in the horizontal plane or in the vicinity of the horizontal plane, the hinge base 4 may specifically include a side plate 41 fixedly mounted to the protection frame 10, and an upper plate 42 and a lower plate 43 integrally connected to the upper portion and the lower portion of the side plate, the side plate 41, the upper plate 42 and the lower plate 43 are preferably located in the protection area between the left and right protection frames 10, and the three are enclosed to form a semi-enclosed guiding area 400, the semi-enclosed guiding area 400 provides stable guiding for the movement of the detection rod 2 without swinging between the upper and lower portions, the hinge shaft 40 extending up and down is inserted between the upper plate 42 and the lower plate 43, and the hinge shaft 40 may directly penetrate through the end portion of the detection rod 2 up and down for connection, but this connection manner is not conducive to connection of the reset device described later, as shown in fig. 2.
Therefore, it is further preferable to provide a new structure in which the sensing lever 2 is hinged, that is, a rotation member including upper and lower rotation plates 4a and 4b provided up and down, and a side rotation plate 4c integrally connected between the upper and lower rotation plates 4a and 4b, the hinge shaft 40 passing up and down through the upper and lower rotation plates 4a and 4b, the rotation member being provided between the upper and lower plates 42 and 43 and being capable of rotating around the hinge shaft 40, and the sensing lever 2 is preferably fixed to the side rotation plate 4c, so that the sensing lever 2 can move together with the rotation member, and the sensing lever 2 can be fixed to the side rotation plate 4c by a welded or sleeved structure.
Preferably, the limiting device 5 includes a front limiting block 51 for limiting the swing of the detection rod 2 towards the operation platform and a rear limiting plate 52 for limiting the swing of the detection rod 2 towards the operator, and a free movement space 512 for the detection rod 2 to swing is provided between the front limiting block 51 and the rear limiting plate 52. Wherein, the same hinge shaft 40 can be integrally connected with a front limiting block 51 at the lower side of the upper plate 42, or integrally connected with a front limiting block 51 at the upper side of the lower plate 43, or integrally connected with a front limiting block 51 at the lower side of the upper plate 42 and the upper side of the lower plate 43 respectively and vertically opposite; the free movement space 512 is a space for allowing the end of the detecting lever 2 or the rotating member to swing on the hinge shaft 40 while being restricted by the initial position and the final position at both the rear stopper plate 52 and the front stopper 51, for example, when the rotating member is used, the upper rotating plate 4a and the lower rotating plate 4b of the rotating member may each have a rear edge for abutting against the rear stopper plate 52 and a front edge for abutting against the front stopper 51, or both the rear edge and the front edge of the side rotating plate 4c may be used.
Preferably, the rear limiting plate 52 is a part of the hinge base 4, and the rear limiting plate 52 may be integrally connected between rear portions of the upper plate 42 and the lower plate 43. The hinge base 4 and the rotating member may be made of hard materials such as metal parts or polymer composite parts.
In order to better enable the detection rod 2 to be kept still in the initial state, and to be capable of pushing the detection rod 2 to the end position by the force applied by the operator and giving an alarm when the position changes, and also to enable the detection rod 2 to reset for repeated use, an elastic resetting device 6 for resetting the detection rod 2 is arranged on the hinged seat 4. Further, it is preferable that the detection lever 2 be allowed to abut against the rear stopper plate 52 in the initial state. Of course, the detection rod 2 can be realized by other resetting mechanisms, either manually or automatically, and a simple and effective implementation will be described later in this embodiment.
Specifically, the elastic reset device 6 includes a torsion spring 60, the torsion spring 60 is sleeved on the periphery of the hinge shaft 40, for example, if the hinge base 4 is installed on the protective frame 10 on the left side, the side plate 41 is fixed with the protective frame 10, the semi-enclosed guide section 400 faces to the right, the side rotating plate 4c should be located on the right side of the side plate 41, the torsion spring 60 is disposed at a position between the side plate 41 and the side rotating plate 4c, two end legs of the torsion spring 60 are respectively inserted into the side plate 41 and the side rotating plate 4c, and after connection, the position of the initial state is made, the detection rod 2 is abutted against the front side position of the rear limiting plate 52 by the elastic force of one end leg of the torsion spring 60, however, when the operator needs to alarm, a certain driving force is applied, that is to make the detection rod 2 generate a position change toward the front side region, so as to alarm, and in alarm, the detection rod 2 can be reset by the, the structure has the advantages that the detection rod 2 is pushed away to resist certain torsional spring elasticity, false alarms caused by actions such as bumping and the like in normal operation in the prior art can be prevented, the structure can also be effectively reset, and when a human body is extruded, more forward or downward moving movement risk avoiding distances exist in the position of the human body, the structure has a good buffering effect, and the loss of equipment or the human body due to too large impact force can be avoided. Of course, the periphery of the hinge shaft 40 can be sleeved with more than two torsion springs 60 to achieve better stress effect, as shown in fig. 3.
In addition, the installation positions of the hinge seat 4 and the rotating member can be inclined to the front lower side or arranged to the lower side, so that the swing surface area of the detection rod 2 is inclined to the front lower side or arranged to the lower side, and the use effect is good.
Certainly, when the emergency escape device is used, the emergency escape device generally needs to be matched with an existing foot switch for operation, when an operator is extruded, the detection rod 2 is pushed by the operator, the controller in the alarm system controls the operation platform to stop all functional actions after receiving position change information, and the audible and visual alarm is generally controlled to give out sound alarm and light alarm to inform related personnel of emergency escape processing. The working process can be performed as follows:
triggering: the detection 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, the signals of the operation platform need to be shielded;
and (3) recovering: the controller can also detect the reset state and the pedal switch state of the detection rod 2, and if the detection rod 2 is recovered to the state at the normal initial time from the extrusion state and the pedal switch is recovered to the non-pedal state from the pedal state and then enters the pedal 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 requires that the detection lever 2 and the foot switch be reset in sequence, so that the false recovery after the anti-extrusion system is triggered can be prevented.
The left and right detection rods 2 can be respectively installed on the left and right protection frames 10 through the installation structure in the embodiment 1, the design is structurally further enhanced, and the safety can be improved because the alarm can be finished by pushing any one detection rod 2.
The position change sensing device 3 can be embedded in the end of the detection rod 2, and the specific implementation scheme has various types, for example:
when one of the detection rods 2 is pushed or both of the detection rods 2 are pushed, the magnetic induction switch can cause the switching of the on and off of the switch due to the position change, because the magnetic induction switch and the detection rod are initially close to each other, the magnetic induction can be weakened or disappeared to cause the switching of the on and off of the switch as long as one detection rod 2 is pushed away, the switching information can be fed back to the controller, and the alarm operation can be realized under the condition that the magnetic induction switch can be fed back as long as being electrically connected to the alarm system, and because the position change information of any detection rod 2 can be fed back to the alarm system through the switching information of the magnetic induction switch;
or, the position change sensing device 3 can directly adopt a displacement sensor with higher precision, so that when the position of the detection rod 2 changes, the position change sensing device can feed back to alarm;
or, the position change sensing device 3 on one of the detection rods 2 is set as an infrared receiver, and the position change sensing device 3 on the other detection rod 2 is set as an infrared transmitter, when the receiving state of the infrared signal changes, the position change information can be fed back to alarm, and here, the infrared receiver can be electrically connected to an alarm system for feedback.
The schemes can be used in different scenes, for example, the first scheme is not recommended in places with large magnetic field influence, and the design structure, selectivity and applicability can be greatly improved.
In addition, the outer part of the detection rod 2 should be wrapped with a buffer layer 20. The buffer layer 20 can be made of flexible materials such as sponge, latex, rubber and plastic to better protect the human body, and the body of the detection rod 2 can be made of a metal rod or a hard plastic rod.
The detection rod 2 is controlled to be about 30cm as far as possible, the detection rod is not suitable to be too long, the swing distance of the detection rod 2 is controlled to be within 15cm as far as possible, and the swing angle range is controlled to be within 45 degrees.
Embodiment 4, as shown in fig. 4, an aerial work platform has a base 7 on which an operator stands and a guard rail 8 mounted on the base 7, and an anti-squeezing device as described in the previous embodiments is mounted on the guard rail 8.
The main structure of this embodiment can certainly adopt current work platform, and the difference is just in installing the anti-extrusion device 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. An anti-extrusion device, its characterized in that: the device comprises an operation platform protection frame (1) used for being installed on a protective guard of an aerial work platform, wherein at least one detection rod (2) for leaning of a human body is movably connected to the operation platform protection frame (1), and a position change induction device (3) used for triggering an alarm system to give an alarm is installed on the detection rod (2).
2. An anti-extrusion device as defined in claim 1, wherein: the detection rod (2) is rotatably connected to the operating platform protection frame (1).
3. An anti-extrusion device as defined in claim 2, wherein: and a hinge seat (4) for hinging the detection rod (2) is fixed on the operating platform protection frame (1).
4. An anti-extrusion device as defined in claim 3, wherein: and a limiting device (5) for limiting the detection rod (2) is arranged on the hinged seat (4).
5. An anti-extrusion device as defined in claim 4, wherein: the limiting device (5) comprises a front limiting block (51) used for limiting the swing of the detection rod (2) towards the direction of the operating platform and a rear limiting plate (52) used for limiting the swing of the detection rod (2) towards the direction of an operator, wherein a free moving interval (512) for enabling the detection rod (2) to swing is arranged between the front limiting block (51) and the rear limiting plate (52).
6. An anti-extrusion device as defined in claim 5, wherein: the rear limiting plate (52) is part of the hinge seat (4).
7. An anti-extrusion device as defined in claim 4, wherein: an elastic reset device (6) for resetting the detection rod (2) is arranged on the hinged seat (4).
8. An anti-extrusion device as defined in claim 1, wherein: the anti-extrusion device is provided with two opposite detection rods (2) at the left and right, and position change induction devices (3) are arranged at the opposite end parts.
9. An anti-extrusion device as defined in claim 8, wherein: the position change induction device (3) on one detection rod (2) is a magnetic induction switch, and the position change induction device (3) on the other detection rod (2) is a magnetic block.
10. An aerial work platform having a base (7) for an operator to stand on and a guard rail (8) mounted on the base (7), characterized in that: an anti-squeezing device as claimed in any one of claims 1 to 9 is mounted on the guard rail (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921532774.3U CN210620166U (en) | 2019-09-16 | 2019-09-16 | Anti-extrusion device and aerial work platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921532774.3U CN210620166U (en) | 2019-09-16 | 2019-09-16 | Anti-extrusion device and aerial work platform |
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| CN210620166U true CN210620166U (en) | 2020-05-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110562886A (en) * | 2019-09-16 | 2019-12-13 | 浙江鼎力机械股份有限公司 | Anti-extrusion device and aerial work platform |
| CN110562886B (en) * | 2019-09-16 | 2024-05-31 | 浙江鼎力机械股份有限公司 | Extrusion preventing device and aerial work platform |
-
2019
- 2019-09-16 CN CN201921532774.3U patent/CN210620166U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110562886A (en) * | 2019-09-16 | 2019-12-13 | 浙江鼎力机械股份有限公司 | Anti-extrusion device and aerial work platform |
| CN110562886B (en) * | 2019-09-16 | 2024-05-31 | 浙江鼎力机械股份有限公司 | Extrusion preventing device and aerial work platform |
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