High-altitude limiting stopper

Abstract

The utility model discloses a high-altitude limiter, which comprises a mounting plate, a baffle plate, a switch, a baffle pipe, a sliding rod and an elastic piece, the baffle plate, the switch and the baffle pipe are fixedly arranged on the front surface of the mounting plate, the baffle plate, the baffle pipe and the mounting plate surround the switch together, the sliding rod is sleeved on the inner side of the baffle pipe in a sliding manner, and in the lifting process of a lifting platform, if the top end of the sliding rod is propped against an object, the elastic piece is fixed on the baffle pipe. When the external force is released, the elastic piece releases energy and drives the sliding rod to slide upwards and reset, the baffle and the gear rod surround the two sides of the switch, the switch is triggered at the same time, the switch is used for turning off the aerial vehicle and enabling the lifting platform to suspend, and the operator on the lifting platform is prevented from being collided and injured; the exposed area of the switch can be reduced, the two sides of the switch can be prevented from being collided by foreign objects, and the two sides can share part of pulling force of hung objects instead of the switch, so that the switch is prevented from being easily loosened and damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-collision equipment, in particular to an aerial limiter. Background Art

[0002] Due to characteristics such as being easy to move, having a large load-bearing capacity, and good reliability, in recent years, mobile aerial lifting platforms (hereinafter referred to as aerial vehicles) have gradually replaced traditional scaffolding and appeared at various construction sites. Using an aerial vehicle, not only can the height be adjusted arbitrarily, but also its lifting platform can be used to place various construction tools, which can effectively reduce the time for retrieving tools and improve the placement safety of tools. However, due to the characteristic of automatic lifting, during the lifting process of its lifting platform, it may collide with an object due to over-lifting. To prevent collisions, aerial limiters have begun to appear on the market. It mainly includes a housing fixedly installed on the guardrail of the lifting platform, a sliding rod vertically slidably connected to one side of the housing, a switch arranged on one side of the housing, and a spring for helping the sliding rod to reset. When the top of the sliding rod collides with an object, the sliding rod will slide down and trigger the switch, and the switch will cut off the power supply of the aerial vehicle, causing the lifting platform to stop lifting, thereby playing a warning role.

[0003] However, the switch of the existing aerial limiter is usually directly arranged on one side of the housing. During the lifting and lowering process of the lifting platform, the switch is easily hooked by or knocked against external objects, resulting in the loosening or even damage of the switch, affecting the service life of the aerial limiter. Summary of the Utility Model

[0004] In view of this, the utility model provides an aerial limiter, which is used to solve the problem that the switch of the aerial limiter in the prior art is usually directly arranged on one side of the housing. During the lifting and lowering process of the lifting platform, the switch is easily hooked by or knocked against external objects, resulting in the loosening or even damage of the switch, affecting the service life of the aerial limiter.

[0005] To achieve one or part or all of the above purposes or other purposes, the utility model provides an aerial limiter, including a mounting plate, a baffle, a switch, a retaining tube, a sliding rod, and an elastic member. The baffle, the switch, and the retaining tube are sequentially and fixedly arranged on the front surface of the mounting plate along the horizontal direction. The baffle and the retaining tube are both arranged along the vertical direction and enclose the switch together with the mounting plate. The sliding rod is slidably sleeved inside the retaining tube. The sliding of the sliding rod downwards can trigger the switch. The elastic member is arranged on the retaining tube and is used to drive the sliding rod to slide off the switch.

[0006] Preferably, the switch is a microswitch. A pressing plate is arranged on one side wall of the sliding rod. A limiting port for the pressing plate to penetrate to the outside is opened on one side wall of the retaining tube close to the switch. The pressing plate is used to trigger the microswitch.

[0007] Preferably, the sliding rod is slidably connected to both ends of the retaining tube and is spaced from the inner wall of the retaining tube. A convex edge is circumferentially provided on one side wall of the sliding rod located inside the retaining tube. The elastic member is a spring. The spring is located inside the retaining tube and sleeved on the sliding rod. The bottom end of the spring abuts against the bottom end of the retaining tube, and the top end of the spring abuts against the bottom wall of the convex edge.

[0008] Preferably, the sliding rod has a hollow structure with both ends penetrating. A fastening screw is rotatably connected to the side wall of one end of the sliding rod in the radial direction.

[0009] Preferably, a wireless control main board is integrated in the switch, and the wireless control main board can control the on-off of the switch.

[0010] Preferably, a hook is provided on the back surface of the mounting plate.

[0011] Preferably, the baffle, the hook and the mounting plate are integrally formed.

[0012] Preferably, first mounting ears are provided at both the left and right ends of the mounting plate and at both the left and right ends of the lower half of the hook. First through holes are formed in the first mounting ears.

[0013] Preferably, countersunk holes are respectively formed at both the left and right ends of the upper half of the hook, and the countersunk holes penetrate through the top and bottom sides of the upper half of the hook.

[0014] Preferably, a gasket adapted to the contours of the hook and the mounting plate is sleeved inside the hook. Second mounting ears are provided at both the left and right ends of the gasket near the mounting plate, and second through holes corresponding to the first through holes are provided in the second mounting ears.

[0015] Implementing the embodiments of the present invention will have the following beneficial effects:

[0016] After adopting the above-mentioned high-altitude limiter, during use, first fixedly install the mounting plate on the outer side wall of the guardrail of the lifting platform. During the lifting process of the lifting platform, if the top end of the sliding rod abuts against an object, the sliding rod will be forced to slide down, stretch or compress the elastic member and trigger the switch at the same time. Use the switch to shut down the aerial work platform and make the lifting platform hover, avoiding the operators on the lifting platform from being injured by collision. When the external force is removed, the elastic member will release energy and drive the sliding rod to slide up and reset for repeated use. At the same time, using the baffle and the retaining rod to surround both sides of the switch can not only reduce the exposed area of the switch, avoid the two sides of the switch from being collided by foreign objects, but also the two can share part of the pulling force of the hanging object for the switch, avoiding the switch from being easily loosened and damaged, and effectively extending the service life of the high-altitude limiter. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0018] Among them:

[0019] Figure 1 is the three-dimensional view of the present invention;

[0020] Figure 2 is the exploded view of the present invention;

[0021] Figure 3 is the top view of the present invention.

[0022] In the figure: 1, mounting plate; 2, baffle; 3, switch; 4, retaining pipe; 41, limiting port; 5, sliding rod; 51, pressing plate; 52, convex edge; 6, elastic member; 7, hook; 71, first mounting ear; 72, first through hole; 73, counterbore; 8, gasket; 81, second mounting ear; 82, second through hole; 9, fastening screw. Specific embodiments

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs; the terms used in the description of the present application in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the description and claims of the present invention and the above accompanying drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the description and claims of the present invention or the above accompanying drawings are used to distinguish different objects and not to describe a specific order.

[0024] Referring to "embodiment" herein means that a specific feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present invention. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0025] In order to enable those skilled in the technical field to better understand the solution of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings.

[0026] Such as Figures 1-3As shown in the figure, a high-altitude limiter includes a mounting plate 1, a baffle 2, a switch 3, a retaining tube 4, a sliding rod 5 and an elastic member 6. The baffle 2, the switch 3 and the retaining tube 4 are fixedly arranged on the front surface of the mounting plate 1 in sequence along the horizontal direction. The baffle 2 and the retaining tube 4 are both arranged along the vertical direction and surround the switch 3 together with the mounting plate 1. The sliding rod 5 is slidably sleeved inside the retaining tube 4. When the sliding rod 5 slides downwards, it can trigger the switch 3. The elastic member 6 is arranged on the retaining tube 4 and is used to drive the sliding rod 5 to slide off the switch 3. During use, first fixedly install the mounting plate 1 on the outer side wall of the guardrail of the lifting platform. During the lifting process of the lifting platform, if the top end of the sliding rod 5 abuts against an object (such as the ceiling), the sliding rod 5 will be forced to slide downwards, and stretch or compress the elastic member 6 while triggering the switch 3. Use the switch 3 to shut down the aerial work platform and make the lifting platform hover, so as to prevent the operators on the lifting platform from being injured by collision. When the external force is removed, the elastic member 6 will release energy and drive the sliding rod 5 to slide upwards and reset for repeated use. At the same time, by using the baffle 2 and the retaining rod to surround both sides of the switch 3, not only can the exposed area of the switch 3 be reduced to avoid the two sides of the switch 3 being collided by foreign objects, but also the two can share part of the pulling force of the hanging objects for the switch 3 to avoid the switch 3 from being easily loosened and damaged, effectively extending the service life of the high-altitude limiter.

[0027] In this embodiment, the distance between the top end of the sliding rod 5 and the top surface of the lifting platform is greater than the height value of a normal person to ensure that the top end of the sliding rod 5 abuts against the object first to ensure personal safety.

[0028] Furthermore, the switch 3 is a microswitch. A pressing plate 51 is provided on one side wall of the sliding rod 5. A limiting port 41 for the pressing plate 51 to penetrate to the outside is opened on one side wall of the retaining tube 4 close to the switch 3. When the sliding rod 5 is forced to slide downwards, it will drive the pressing plate 51 to move downwards synchronously along the limiting port 41, and use the pressing plate 51 to press the microswitch to achieve the purpose of triggering the microswitch.

[0029] Furthermore, the sliding rod 5 is slidably connected to both ends of the retaining tube 4 and is spaced from the inner wall of the retaining tube 4. A convex edge 52 is provided on one side wall of the sliding rod 5 located inside the retaining tube 4 along the circumferential direction. The elastic member 6 is a spring. The spring is located inside the retaining tube 4 and sleeved on the sliding rod 5. The bottom end of the spring abuts against the bottom end of the retaining tube 4, and the top end of the spring abuts against the bottom wall of the convex edge 52. When the sliding rod 5 is forced to slide downwards, it will drive the convex edge 52 to squeeze the spring downwards to deform and store energy. When the external force is removed, the spring will release energy and reset, and drive the convex edge 52 to drive the sliding rod 5 to slide upwards and reset.

[0030] Furthermore, the sliding rod 5 has a hollow structure with both ends penetrated. A fastening screw 9 is screwed on one side wall of one end of the sliding rod 5 along the radial direction. During use, a top rod can be sleeved inside the sliding rod 5 and locked by the fastening screw 9, so as to use the top rod to collide with the ceiling instead of the sliding rod 5 to extend the service life of the sliding rod 5.

[0031] Furthermore, a wireless control main board is integrated in the switch 3. The wireless control main board can control the on / off of the switch 3. During use, the wireless control main board is powered by a battery (not shown in the attached drawings) provided in the switch 3. The wireless control main board is wirelessly connected to the control unit of the aerial work platform. When the sliding rod 5 slides down to trigger the switch 3, the wireless control main board will send a control signal to the control unit of the aerial work platform. After receiving the control signal, the control unit of the aerial work platform will shut down the aerial work platform, thus avoiding the trouble of wiring for the switch 3 and making the appearance of the aerial work platform more tidy.

[0032] Furthermore, a hook 7 is provided on the back of the mounting plate 1.

[0033] Furthermore, the baffle 2, the hook 7 and the mounting plate 1 are integrally formed from a metal sheet by sheet metal working. The retaining pipe 4 is fixedly connected to the mounting plate 1 by welding.

[0034] Furthermore, first mounting ears 71 are provided at the left and right ends of the mounting plate 1 and at the left and right ends of the lower half of the hook 7. First through holes 72 are provided in the first mounting ears 71.

[0035] In this embodiment, the hook 7 can be hung on the guardrail. The user can pass a bolt through two corresponding first mounting holes and lock it with a nut, so that the lower half of the hook 7 is gathered with the mounting plate 1 (not shown in the attached drawings), thereby clamping the aerial limit switch on the guardrail for fixed use and improving the installation stability of the aerial limit switch.

[0036] Furthermore, countersunk holes 73 are respectively provided at the left and right ends of the upper half of the hook 7. The countersunk holes 73 penetrate through the top and bottom sides of the upper half of the hook 7. When corresponding holes are provided in the top side wall of the lifting platform guardrail, the user can screw a screw through the countersunk holes 73 at the hole positions to fix the hook 7 on the guardrail, further improving the connection strength between the hook 7 and the guardrail.

[0037] Furthermore, a gasket 8 adapted to the contours of the hook 7 and the mounting plate 1 is sleeved inside the hook 7. Second mounting ears 81 are provided at the left and right ends of the gasket 8 near the mounting plate 1. Second through holes 82 corresponding to the first through holes 72 are provided in the second mounting ears 81. The bolt passing through the first mounting hole will also pass through the corresponding second mounting hole, thereby restricting the relative movement between the gasket 8 and the hook 7 by the bolt, preventing the gasket 8 from easily shifting, and improving the installation stability of the gasket 8. When the lower half of the hook 7 is gathered with the mounting plate 1, the gasket 8 will be squeezed, causing the gasket 8 to clamp the guardrail, thereby fixing the aerial limit switch on the guardrail by frictional resistance. By using the gasket 8 to contact the guardrail instead of the hook 7 and the mounting plate 1, the wear of the hook 7 and the mounting plate 1 is reduced, and at the same time, a certain leveling and vibration damping effect is achieved, extending the service life of the aerial limit switch.

[0038] Obviously, the embodiments described above are only a part of the embodiments of the present utility model, rather than all embodiments. The preferred embodiments of the present utility model are shown in the drawings, but they do not limit the patent scope of the present utility model. The present utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present utility model more thorough and comprehensive. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structures made by using the content of the specification and drawings of the present utility model, directly or indirectly applied to other related technical fields, are similarly within the scope of the patent protection of the present utility model.

Claims

1. A high altitude limiter, characterized in that: include: Mounting plates, baffles, switches, baffle tubes, slide bars and elastic parts; The baffle, the switch and the baffle tube are fixedly arranged in sequence on the front of the mounting plate in the horizontal direction, and the baffle and the baffle tube are arranged in the vertical direction and surround the switch together with the mounting plate; The slide bar is slidably sleeved on the inner side of the retaining tube, and the slide bar can trigger the switch when it slides down; The elastic member is arranged on the retaining tube, and is used for driving the sliding rod to slide upward and separate from the switch.

2. A high altitude limiter according to claim 1, characterized in that: The switch is a micro switch, a pressing plate is provided on one side wall of the slide rod, a limiting opening is provided on one side wall of the retaining tube close to the switch for the pressing plate to pass through to the outside, and the pressing plate is used to trigger the micro switch.

3. A high altitude limiter according to claim 1, characterized in that: The sliding rod is slidably connected to the two ends of the retaining tube and is spaced from the inner wall of the retaining tube. The sliding rod is located on a side wall inside the retaining tube and is circumferentially provided with a convex edge. The elastic member is a spring. The spring is located in the retaining tube and is sleeved on the sliding rod. The bottom end of the spring abuts against the bottom end of the retaining tube, and the top end of the spring abuts against the bottom wall of the convex edge.

4. A high altitude limiter according to claim 1, characterized in that: The slide rod is a hollow structure with two ends penetrating therethrough, and a fastening screw is radially screwed on a side wall of one end of the slide rod.

5. The high altitude limiter according to claim 1, characterized in that: A wireless control mainboard is integrated in the switch, and the wireless control mainboard can control the on and off of the switch.

6. A high altitude limiter according to claim 1, characterized in that: A hook is arranged on the back side of the mounting plate.

7. A high altitude limiter according to claim 6, characterized in that: The baffle, the hook and the mounting plate are integrally formed.

8. A high altitude limiter according to claim 6, characterized in that: The left and right ends of the mounting plate and the left and right ends of the lower half of the hook are both provided with first mounting ears, and the first mounting ears are both provided with first through holes.

9. A high altitude limiter according to claim 8, characterized in that: The left and right ends of the upper half of the hook are respectively provided with countersunk holes, and the countersunk holes penetrate through the top and bottom sides of the upper half of the hook.

10. A high altitude limiter according to claim 8, characterized in that: The inner side of the hook is sleeved with a gasket that matches the contour of the hook and the contour of the mounting plate. The left and right ends of the gasket close to the mounting plate are both provided with second mounting ears, and the second mounting ears are provided with second through holes corresponding to the first through holes.

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