A high altitude limiter

Abstract

The utility model discloses a high-altitude limiter, comprising a shell, a sliding rod, a switch and a cover body. The shell is provided with a accommodating chamber opened toward one side thereof, the sliding rod can be slidably sleeved on the shell, a part of the sliding rod is located in the accommodating chamber, an elastic member for driving the sliding rod to slide up and reset is provided in the accommodating chamber, the switch is arranged on one side of the cover body, the cover body covers the opening of the accommodating chamber, and the switch is extended into the accommodating chamber. In the process of lifting the lifting platform, when the top end of the sliding rod abuts against the ceiling, the sliding rod will slide down under the force to compress the elastic member and trigger the switch, the aerial vehicle is shut down by the switch, the lifting platform is suspended, and the operator on the lifting platform is prevented from being injured by collision, and when the external force is released, the elastic member will drive the sliding rod to slide up and reset for repeated use, and the cover body is used to cover the opening of the accommodating chamber so that the switch is extended into the accommodating chamber, which can prevent foreign objects from easily knocking against the switch and effectively prolong the service life of the high-altitude limiter.

Description

Technical Field

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

[0002] In recent years, mobile aerial lifting platforms (hereinafter referred to as aerial vehicles) have gradually replaced traditional scaffolding in various construction sites due to their characteristics of easy mobility, heavy load-bearing capacity and good reliability. The use of aerial vehicles not only allows the height to be adjusted at will, but also the lifting platform can be used to place various construction tools, which can effectively reduce the time for retrieval of tools and improve the safety of tool placement. However, due to the characteristics of automatic lifting, the lifting platform may collide with objects due to over-lifting during the lifting process. In order to prevent the occurrence of collisions, high-altitude limiters have begun to appear on the market. They mainly include a shell for fixed installation on the guardrail of the lifting platform, a top rod vertically slid on one side of the shell, a switch arranged on one side of the shell and a spring for helping the top rod to reset. When the top of the top rod collides with the object, the top rod will slide down and trigger the switch. The switch will cut off the power supply of the aerial vehicle and stop the lifting platform from lifting, thereby serving as an early warning.

[0003] However, the switch of the existing high-altitude limiter is usually exposed outside the shell, and the switch is easily damaged by collision with foreign objects during use, which affects the service life of the high-altitude limiter. Utility Model Content

[0004] In view of this, the utility model provides a high altitude limiter, which is used to solve the problem that the switch of the high altitude limiter in the prior art is usually exposed outside the shell, and the switch is easily damaged by collision with foreign objects during use, which affects the service life of the high altitude limiter.

[0005] In order to achieve one or part or all of the above-mentioned purposes or other purposes, the utility model proposes a high-altitude limiter, including a shell, a sliding rod, a switch and a cover body, the shell is provided with a accommodating chamber opening toward one side thereof, the sliding rod is vertically and slidably sleeved on the shell, a part of the sliding rod is located in the accommodating chamber, the accommodating chamber is provided with an elastic member for driving the sliding rod to slide up and reset, the switch is arranged on one side of the cover body, the cover body covers the opening of the accommodating chamber and allows the switch to extend into the accommodating chamber, and the sliding rod can compress the elastic member and trigger the switch when it slides down.

[0006] Preferably, a wiring hole is provided on the bottom wall of the accommodating cavity.

[0007] Preferably, the switch is a micro switch, and a pressing plate is provided on the outer wall of the portion of the sliding rod located in the accommodating cavity, and the pressing plate is used to trigger the micro switch.

[0008] Preferably, a limit rod is horizontally arranged in the accommodating cavity, the limit rod is located below the pressing plate, both ends of the limit rod are fixedly connected to the shell, and when the pressing plate moves downward to trigger the switch, the pressing plate will abut against the limit rod.

[0009] Preferably, the height limiter further comprises a wireless control mainboard, the wireless control mainboard is arranged adjacent to the switch on one side of the cover body, and the wireless control mainboard is electrically connected to the switch.

[0010] Preferably, the elastic member is a spring, the spring is sleeved on the sliding rod, the bottom end of the spring abuts against the bottom wall of the accommodating cavity, and the top end of the spring abuts against the bottom wall of the pressing plate.

[0011] Preferably, the slide rod is a hollow structure with two ends penetrating therethrough, and a fastening screw is radially screwed on one side of the top end of the slide rod.

[0012] Preferably, a hook is provided on one side of the top end of the shell.

[0013] Preferably, the shell is composed of an inner shell and an outer shell which surround each other, and the sliding rod is slidably connected to the outer shell.

[0014] Preferably, the shell and the cover are both made of metal.

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

[0016] After adopting the above-mentioned high-altitude limiter, when using it, first fix the shell on the guardrail of the lifting platform. During the lifting process of the lifting platform, when the top of the sliding rod contacts the object, the sliding rod will slide down under the force to compress the elastic part and trigger the switch. The aerial vehicle is shut down by the switch to make the lifting platform hover, thereby preventing the operator on the lifting platform from being collided and injured. When the external force is released, the elastic part will drive the sliding rod to slide up and reset for repeated use. The cover body is used to cover the opening of the accommodating cavity so that the switch is extended into the accommodating cavity, which can prevent foreign objects from easily knocking against the switch and effectively extend the service life of the high-altitude limiter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] in:

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 It is an exploded view of the utility model;

[0021] Figure 3 It is a side sectional view of the utility model.

[0022] In the figure: 1. Shell; 11. Accommodating cavity; 12. Wiring hole; 13. Limit rod; 2. Inner shell; 21. Hook; 3. Outer shell; 4. Sliding rod; 41. Pressing plate; 42. Fastening screw; 5. Switch; 6. Cover; 7. Elastic member; 8. Wireless control main board. DETAILED DESCRIPTION

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present invention; the terms used in the specification of the application herein 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 specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present invention or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0024] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0025] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0026] like Figure 1-3As shown, a high altitude limiter comprises a shell 1, a slide bar 4, a switch 5 and a cover body 6. The shell 1 is provided with a receiving chamber 11 which is open to one side thereof. The slide bar 4 is vertically and slidably sleeved on the shell 1. A part of the slide bar 4 is located in the receiving chamber 11. An elastic member 7 for driving the slide bar 4 to slide upward and reset is provided in the receiving chamber 11. The switch 5 is arranged on one side of the cover body 6. The cover body 6 covers the opening of the receiving chamber 11 and allows the switch 5 to extend into the receiving chamber 11. The cover body 6 can be fixedly connected to the shell 1 by screws. When in use, the shell 1 is first fixedly installed on the lifting device. On the guardrail of the lowering platform, during the lifting process of the lifting platform, when the top of the slide bar 4 contacts an object (such as a ceiling), the slide bar 4 will slide down under the force to compress the elastic member 7 and trigger the switch 5. The switch 5 is used to shut down the aerial vehicle and make the lifting platform hover to prevent the operator on the lifting platform from being injured by collision. When the external force is released, the elastic member 7 will drive the slide bar 4 to slide up and reset for repeated use. The cover body 6 is used to cover the opening of the accommodating chamber 11 so that the switch 5 is extended into the accommodating chamber 11, which can prevent foreign objects from easily knocking against the switch 5 and effectively extend the service life of the high-altitude limiter.

[0027] In this embodiment, the distance between the top of the sliding rod 4 and the top surface of the lifting platform should be greater than the height of a normal person to ensure that the top of the sliding rod 4 contacts the object first to ensure personal safety; the cover body 6 is plate-shaped, and the cover body 6 can be embedded in the opening of the accommodating cavity 11 and fixedly connected to the shell 1 by welding.

[0028] Furthermore, a wiring hole 12 is provided on the bottom wall of the accommodating cavity 11 so that the switch 5 can be electrically connected to the control unit of the aerial vehicle.

[0029] Furthermore, the switch 5 is a micro switch 5, and a pressing plate 41 is provided on the outer wall of the part of the sliding rod 4 located in the accommodating cavity 11. The pressing plate 41 is used to trigger the micro switch 5. When the sliding rod 4 slides down under force, it will drive the pressing plate 41 to move down synchronously, and the pressing operation of the micro switch 5 is realized by using the pressing plate 41, thereby triggering the micro switch 5.

[0030] Furthermore, a limit rod 13 is horizontally arranged in the accommodating cavity 11, and the limit rod 13 is located below the pressing plate 41. Both ends of the limit rod 13 are fixedly connected to the shell 1. When the pressing plate 41 moves downward to trigger the switch 5, the pressing plate 41 will abut against the limit rod 13, so as to utilize the limit rod 13 to limit the further downward movement of the pressing plate 41 to avoid damaging the switch 5.

[0031] Furthermore, the high-altitude limiter also includes a wireless control mainboard 8, which is arranged adjacent to the switch 5 on one side of the cover body 6, and is electrically connected to the switch 5. When in use, the wireless control mainboard 8 is powered by a battery arranged in the accommodating cavity 11 (not shown in the accompanying drawings). The wireless control mainboard 8 is wirelessly connected to the control unit of the aerial vehicle. When the slide bar 4 moves downward to trigger the switch 5, the wireless control mainboard 8 will send a control signal to the control unit of the aerial vehicle. After receiving the control signal, the control unit of the aerial vehicle will shut down the aerial vehicle, thereby avoiding the trouble of wiring the switch 5 and making the appearance of the aerial vehicle more tidy.

[0032] Furthermore, the elastic member 7 is a spring, which is sleeved on the slide rod 4. The bottom end of the spring abuts against the bottom wall of the accommodating chamber 11, and the top end of the spring abuts against the bottom wall of the pressing plate 41. When the pressing plate 41 moves downward with the slide rod 4, the spring will be compressed. When the external force is released, the spring will release energy and reset, and drive the pressing plate 41 to drive the slide rod 4 to slide up and reset.

[0033] Furthermore, the sliding rod 4 is an internal hollow structure with both ends penetrated, and a fastening screw 42 is radially screwed on one side of the top end of the sliding rod 4. When in use, a top rod can be sleeved on the inner side of the sliding rod 4 and locked by the fastening screw 42, so that the top rod can be used instead of the sliding rod 4 to collide with the ceiling, thereby extending the service life of the sliding rod 4.

[0034] Furthermore, a hook 21 is provided on one side of the top end of the shell 1, and the hook 21 can be hung on the guardrail. The two ends of the hook 21 can be gathered together by a screw and a nut (not shown in the drawings), so that the hook 21 is clamped on the guardrail to improve the installation stability, thereby installing the high-altitude limiter on the guardrail of the lifting platform for use.

[0035] Furthermore, the shell 1 is composed of an inner shell 2 and an outer shell 3 which are enclosed with each other, the hook 21 is formed by bending the top end of the inner shell 2, the slide rod 4 is slidably connected to the outer shell 3, the inner shell 2, the outer shell 3 and the cover 6 are all made of metal, and the inner shell 2 and the outer shell 3 are fixed by welding to improve the structural strength of the shell 1, ensure the protection effect of the switch 5, and extend the service life.

[0036] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The 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 disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A high altitude limiter, characterized in that: include: Housing, slide bar, switch and cover; The housing is provided with a receiving cavity which is open to one side thereof, the slide bar is vertically and slidably sleeved on the housing, a part of the slide bar is located in the receiving cavity, and an elastic member for driving the slide bar to slide upward and reset is provided in the receiving cavity; The switch is arranged on one side of the cover body, and the cover body covers the opening of the accommodating cavity, and the switch extends into the accommodating cavity; The sliding rod slides down to compress the elastic member and trigger the switch.

2. A high altitude limiter according to claim 1, characterized in that: A wiring hole is provided on the bottom wall of the accommodating cavity.

3. A high altitude limiter according to claim 1, characterized in that: The switch is a micro switch, and a pressing plate is provided on the outer wall of the portion of the sliding rod located in the accommodating cavity, and the pressing plate is used to trigger the micro switch.

4. A high altitude limiter according to claim 3, characterized in that: A limit rod is horizontally arranged in the accommodating cavity, the limit rod is located below the pressing plate, both ends of the limit rod are fixedly connected to the shell, and when the pressing plate moves downward to trigger the switch, the pressing plate will abut against the limit rod.

5. The high altitude limiter according to claim 1, characterized in that: The high altitude limiter also includes a wireless control mainboard, which is arranged adjacent to the switch on one side of the cover body, and the wireless control mainboard is electrically connected to the switch.

6. A high altitude limiter according to claim 1, characterized in that: The elastic member is a spring, which is sleeved on the slide rod, the bottom end of the spring abuts against the bottom wall of the accommodating cavity, and the top end of the spring abuts against the bottom wall of the pressing plate.

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

8. The high altitude limiter according to claim 1, characterized in that: A hook is arranged on one side of the top end of the shell.

9. A high altitude limiter according to claim 1, characterized in that: The shell body is composed of an inner shell and an outer shell which are enclosed with each other, and the sliding rod is slidably connected to the outer shell.

10. The high altitude limiter according to claim 1, characterized in that: The shell and the cover are both made of metal.

Images