Anti-extrusion device of aerial work platform
By setting up multiple stroke limiters and pressure trigger rods on the fence of the aerial working platform, combining mechanical transmission elements and bumper structures, the problem of limited detection range in the existing technology is solved, and a more comprehensive anti-extrusion effect is achieved. , improves security.
Patent Information
- Application Number
- CN202421117723.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-22
AI Technical Summary
The anti-extrusion device of the existing high-altitude working platform only has limiters at four corners of the fence, and the detection range is limited, so it cannot effectively prevent the squeeze in other positions of the fence, which poses a high safety hazard.
A device including at least two sets of anti-extrusion units is designed, and a plurality of stroke limiters and pressure trigger rods are arranged along the length direction of the upper side of the safety fence. The mechanical transmission element detects the movement of the object and improves the detection through the bumper and the telescopic member. Range and flexibility, combined with magnetic connections ensure that the device does not break when not in use.
The anti-squeezing detection range is effectively expanded, the risk of staff injury is reduced, the safety of the high-altitude working platform in different directions is ensured, and the limiter can only detect defects directly above in the prior art.
Smart Images
Figure CN222204716U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of aerial work platforms, in particular to an anti-extrusion device for aerial work platforms. Background Art
[0002] Aerial work platforms are equipment used to perform work at heights and are widely used in fields such as construction and power maintenance. In actual use, due to the influence of various factors, such as operating errors, equipment failures, environmental factors, etc., the aerial work platform may collide or squeeze with surrounding buildings during its ascent, causing harm to the personnel working on the aerial work platform.
[0003] The prior art sets rod-type limiters in the vertical direction at the four corners above the aerial work platform. The rod-type limiter is usually composed of a rod and a limit switch or sensor connected thereto. When the building or object above collides with the upper end of the rod-type limiter and presses down the rod, the rod-type limiter detects a signal and sends a signal to control the aerial work platform to stop moving upward to prevent the aerial work platform from being squeezed. However, the rod-type limiter is only set at the four corners of the fence of the aerial work platform, so it can only detect whether there is a collision with the building at the four corners of the fence. There are fewer anti-squeezing detection points, and there are higher safety hazards at other positions of the fence; and the rod-type limiter is set vertically, and can only detect the building directly above it that is in contact with it, and its detection direction is also limited. Utility Model Content
[0004] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides an anti-extrusion device for an aerial work platform.
[0005] The technical solution of this utility model is as follows:
[0006] An anti-extrusion device for an aerial work platform, arranged above a rectangular safety fence of the aerial work platform, comprises at least two sets of anti-extrusion units arranged opposite to each other, the anti-extrusion units comprise at least two travel limiters arranged along the length direction of the upper side of the safety fence, the travel limiter is electrically connected to the aerial work platform or an alarm device, and comprises a mechanical transmission element capable of detecting the movement of an object;
[0007] The upper side with the travel limiter is provided with a first pressure trigger rod arranged along the length direction thereof, the first pressure trigger rod is connected to the upper side through a safety rod and is arranged above the mechanical transmission element, and the mechanical transmission element can detect the position of the first pressure trigger rod;
[0008] The ends on the same side of the two first pressure trigger rods arranged opposite to each other both extend to the outer ends of the upper side edges and are connected by the second pressure trigger rod.
[0009] The travel limiter is installed above the safety fence, and a first pressure trigger rod is provided above the mechanical transmission element. The first pressure trigger rod cooperates with the second pressure trigger rod to surround the safety fence. When the safety fence moves up or moves left and right at high altitude, buildings or other obstacles will first collide with the first pressure trigger rod and / or the second pressure trigger rod, thereby triggering the travel limiter to stop the aerial work platform or activate the alarm device to stop the operation of the aerial work platform, thereby preventing buildings or other obstacles from squeezing the safety fence.
[0010] Regarding the specific structure of the safety rod component, the safety rod component includes a safety rod that is arranged obliquely or vertically. The material of the safety rod can be easily broken plastic material, wood material or other material. The safety rod is provided with an easily broken rod section. The width or outer diameter of the easily broken rod section is smaller than the outer diameter of the safety rod. It is easy to break quickly when the first pressure trigger rod or the second pressure trigger rod collides with the building, and the lowest point height of the safety rod is lower than the lowest point height of the mechanical transmission element.
[0011] The above-mentioned safety rod member is not easy to be set too long, otherwise it is easy to break when the aerial work platform is not in use or when it is normally moved to the construction site. For this reason, the safety rod member also includes a vertical rod arranged vertically, which is vertically arranged above the upper side of the safety fence and is connected to the first pressure trigger rod through the safety rod to shorten the length of the safety rod.
[0012] In order to ensure that the safety bar does not break when the aerial work platform is not in use or is closed, a lockable telescopic part is provided on the upper part of the vertical rod in the vertical direction. The upper end of the telescopic part is detachably connected to the first pressure trigger rod directly above it. When the aerial work platform is not used, the telescopic part can be connected to the first pressure trigger rod and the vertical rod to protect the safety bar from breaking.
[0013] To ensure that the aerial work platform works normally, the telescopic member is in a retracted state and does not hinder the functions of the safety bar and the mechanical transmission element, the lowest point height that the upper end of the telescopic member can reach is set lower than the lowest point height of the safety bar and / or the mechanical transmission element.
[0014] The telescopic part is lockable. If the upper end of the telescopic part is manually pushed against the lower end surface of the first pressure trigger rod, the telescopic rod may be extended too long or too short, with a large error. It may not support the first pressure trigger rod, or it may directly lift the first pressure trigger rod, causing the safety rod to break. For this reason, the upper end of the telescopic part is magnetically connected to the bottom surface of the first pressure trigger rod. After the magnetic attraction, the telescopic part is directly locked, and the telescopic part will not be too long or too short.
[0015] Regarding the initial setting position of the mechanical transmission element, the upper end of the mechanical transmission element is tilted and extended upward, which can detect both buildings colliding from above and buildings colliding from the side, thereby improving the anti-squeezing effect in different directions. It is not limited to the prior art of only detecting the building directly above, and increases the range of the first pressure trigger rod contacting the building.
[0016] The specific structure of the above-mentioned first pressure trigger rod is that the cross-section of the first pressure trigger rod is a bent surface or an arc-shaped surface, which is arranged above and outside the upper end of the mechanical transmission element, and cooperates with the mechanical transmission element to increase the force range of the first pressure trigger rod.
[0017] Regarding the setting distance between the mechanical transmission element and the first pressure trigger rod, the minimum distance between the inner bottom surface of the first pressure trigger rod and the upper end of the mechanical transmission element is 0-5cm, which ensures that the first pressure trigger rod moves downward under the action of external force, directly and quickly pressing down the mechanical transmission element, causing the mechanical transmission element to operate.
[0018] The beneficial effects of the present invention are:
[0019] A first pressure trigger rod is provided at a relatively small distance above the travel limiter. If the safety fence of the aerial work platform collides with a building or other obstacle above or on one side, it will first collide with the first pressure trigger rod, which will press down and break the safety rod to trigger the mechanical transmission element to move. The travel limiter sends a signal to an external control host, which controls the aerial work platform to stop moving upward or triggers an alarm device to warn the operator to stop the aerial work platform.
[0020] The first pressure trigger rod is arranged on two opposite sides of the safety fence, and the same-side ends of the two first pressure trigger rods are connected by the second pressure trigger rod. A second pressure trigger rod capable of triggering the action of the travel limiter can also be arranged on the other side of the safety fence. The two first pressure trigger rods and the second pressure trigger rod arranged relatively can detect most positions outside the safety fence, and increase the anti-extrusion detection range of the travel limiter as much as possible, so as to achieve the anti-extrusion effect and reduce the phenomenon of injuries to workers.
[0021] The upper end of the mechanical transmission element is tilted upward and extended, and cooperates with the first pressure trigger rod with a bent or arc-shaped cross-section, so that it can detect both the building that collides with the top and the building that collides with the side, thereby improving the anti-squeezing effect in different directions, and is not limited to the existing technology that only detects the building directly above;
[0022] The side of the safety fence where the anti-crushing unit is not provided is provided as an opening for construction workers to ensure that the workers can perform normal construction on the safety fence. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In the attached picture:
[0024] Figure 1 It is a schematic diagram of the three-dimensional structure;
[0025] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;
[0026] Figure 3 It is a front view;
[0027] Figure 4 for Figure 3 The enlarged structural diagram at B in the middle;
[0028] Figure 5 It is the left view;
[0029] The components represented by the reference numerals in the figure are:
[0030] 1. Safety fence; 11. Upper side; 2. Travel limiter; 21. Mechanical transmission element; 3. First pressure trigger rod; 4. Second pressure trigger rod; 5. Safety rod; 51. Breakable rod section; 6. Vertical rod; 7. Telescopic part; 8. Magnet; 9. Adjustment rod. DETAILED DESCRIPTION
[0031] See also Figure 1 and Figure 2 The anti-extrusion device of an aerial work platform shown is arranged above a rectangular safety fence 1 of the aerial work platform. The safety fence 1 is formed by four upper side edges 11. The anti-extrusion device of the aerial work platform includes at least two groups of anti-extrusion units arranged opposite to each other. The anti-extrusion unit includes at least two travel limiters 2 arranged along the length direction of the upper side edges 11 of the safety fence 1. The two travel limiters 2 are distributed at both ends of a single upper side edge 11. The travel limiter 2 is electrically connected to the aerial work platform or the alarm device. The travel limiter 2 includes a mechanical transmission element 21 capable of detecting the movement of a first pressure trigger rod 3. The travel limiter 2 is installed on 1 through an adjustable height adjustment rod 9, so that the height of the travel limiter 2 can be adjusted according to actual conditions.
[0032] The travel limiter 2 is a prior art, and the travel limiter 2 can be a roller travel limiter 2. A roller is provided at the end of the mechanical transmission element 21, and the mechanical transmission element 21 is the actuator of the travel limiter 2. If the safety fence 1 is to be squeezed, it generally occurs when it moves upward and moves horizontally. Most of the time, it will be squeezed by the building above or on the side above. When the building collides with the first pressure trigger rod 3, the safety rod 5 supporting the first pressure trigger rod 3 breaks, causing the first pressure trigger rod 3 to move downward and contact and collide with the mechanical transmission element 21. The mechanical transmission element 21 is activated, and the travel limiter 2 sends its signal to the aerial work platform or the alarm device through the control host. Regarding the initial setting position of the mechanical transmission element 21, the mechanical transmission element 21 is tilted upward to the outside, which is convenient for the detection of the collision of the first pressure trigger rod 3 with the building from the top and one side, and increases the force range of the first pressure trigger rod 3.
[0033] The upper side 11 provided with the travel limiter 2 is provided with a first pressure trigger rod 3 arranged along the length direction thereof, the first pressure trigger rod 3 is connected to the upper side 11 through a safety rod, and is arranged above the mechanical transmission element 21. Regarding the setting spacing between the mechanical transmission element 21 and the first pressure trigger rod 3, the minimum spacing between the inner bottom surface of the first pressure trigger rod 3 and the upper end of the mechanical transmission element 21 is 0-5 cm.
[0034] See also Figure 3 and Figure 4 As shown, the specific structure of the above-mentioned first pressure trigger rod 3 is that the cross-section of the first pressure trigger rod 3 is a bent surface or an arc-shaped surface, which is arranged above and outside the upper end of the mechanical transmission element 21, and cooperates with the mechanical transmission element 21 to improve the prevention range of the first pressure trigger rod 3 against the extrusion phenomenon above or on one side of the safety fence 1. It is also convenient for the first pressure trigger rod 3 to move down and touch the mechanical transmission element 21 of the travel limiter 2 regardless of being squeezed by the building above or on the upper side. Compared with the prior art that can only prevent extrusion at the four corners in the positive direction, the utility model improves the anti-extrusion range of the aerial work platform.
[0035] See also Figure 2 and Figure 5As shown, regarding the specific structure of the safety rod, the safety rod includes a safety rod 5 that is inclined or vertically arranged. The material of the safety rod 5 can be plastic material, wood material or other material that is easy to break. The safety rod 5 is provided with an easy-to-break rod segment 51. The width or outer diameter of the easy-to-break rod segment 51 is smaller than the outer diameter of the safety rod 5, and it is easy to break quickly when the first pressure trigger rod 3 or the second pressure trigger rod 4 collides with the building, and the lowest point height of the safety rod 5 is lower than the lowest point height of the mechanical transmission element 21. The above-mentioned safety rod is not easy to be set too long, otherwise it is easy to break when the aerial work platform is not in use or when it is normally moved to the construction site. For this reason, the safety rod also includes a vertical rod 6 that is vertically arranged. The vertical rod 6 is vertically arranged on the upper side 11 of the safety fence 1. The upper part of the vertical rod 6 is connected to the first pressure trigger rod 3 through the safety rod 5 to shorten the length of the safety rod 5.
[0036] In order to ensure that the safety bar 5 does not break when the aerial work platform is not in use or is closed, the upper part of the vertical rod 6 is provided with a lockable telescopic member 7 in the vertical direction, and the upper end of the telescopic member 7 is detachably connected to the first pressure trigger rod 3 directly above it. When the aerial work platform is not used, the telescopic member 7 can connect the first pressure trigger rod 3 and the vertical rod 6 to protect the safety bar 5 from breaking. In order to ensure that the telescopic member 7 is in a retracted state when the aerial work platform works normally and does not hinder the function of the safety bar 5, the lower part of the telescopic member 7 is arranged in the vertical rod 6, and the lowest point height that the upper end of the telescopic member 7 can reach is set to be lower than the lowest point height of the safety bar 5.
[0037] See also Figure 4 As shown, the telescopic member 7 is lockable. If the upper end of the telescopic member 7 is manually pushed against the lower end surface of the first pressure trigger rod 3, the telescopic rod may be extended too long or too far, with a large error, and may not support the first pressure trigger rod 3, or may directly lift the first pressure trigger rod 3. All of the above phenomena may cause the safety rod 5 to break. For this reason, the upper end of the telescopic member 7 is magnetically connected to the bottom surface of the first pressure trigger rod 3, and a magnetic-affinity sheet may be provided on the bottom surface of the first pressure trigger rod 3 near the upper end of the telescopic member 7. A magnet 8 is provided on the upper end of the telescopic member 7. After the first pressure trigger rod 3 and the upper end of the telescopic member 7 are magnetically attracted, the telescopic member 7 is directly locked, and the telescopic member 7 will not be too long or too short.
[0038] See also Figure 1As shown, the ends on the same side of the two first pressure trigger rods 3 arranged opposite to each other extend to the outer end of the upper side 11 and are connected by the second pressure trigger rod 4. The first pressure trigger rod 3 is arranged on the opposite sides of the safety fence 1, and the ends on the same side of the two first pressure trigger rods 3 are connected by the second pressure trigger rod 4. The second pressure trigger rod 4 that can trigger the action of the travel limiter 2 can also be arranged on the other side of the safety fence 1. The side opposite to the second pressure trigger rod 4 is arranged as an opening for the construction of the staff, which does not hinder the normal construction of the staff, and increases the anti-extrusion detection range of the travel limiter 2 as much as possible, achieves the anti-extrusion effect, and reduces the phenomenon of injuries to the staff.
Claims
1. An anti-squeezing device for an aerial work platform, arranged above a safety fence (1) of the aerial work platform, characterized in that: The invention comprises at least two groups of anti-extrusion units arranged opposite to each other, the anti-extrusion units comprising at least two travel limiters (2) arranged along the length direction of the upper side (11) of the safety fence (1), the travel limiter (2) being electrically connected to the aerial work platform or the alarm device, and the travel limiter (2) comprising a mechanical transmission element (21); A first pressure trigger rod (3) is provided on the upper side (11) along its length direction and is located above the adjacent mechanical transmission element (21) and is connected to the upper side (11) via a safety rod. The mechanical transmission element (21) is capable of detecting the position of the first pressure trigger rod (3); The ends on the same side of the two first pressure trigger rods (3) arranged opposite to each other both extend to the outer end of the upper side edge (11) and are connected via the second pressure trigger rod (4).
2. The anti-extrusion device for an aerial work platform according to claim 1, characterized in that: The safety rod member comprises a safety rod (5) arranged obliquely or vertically, and an easily breakable rod section (51) is provided on the safety rod (5).
3. The anti-extrusion device for an aerial work platform according to claim 2, characterized in that: The safety rod member also includes a vertical rod (6) arranged vertically, and the upper part of the vertical rod (6) is connected to the first pressure trigger rod (3) through the safety rod (5).
4. The anti-extrusion device for an aerial work platform according to claim 3, characterized in that: A lockable telescopic member (7) is provided on the upper portion of the vertical rod (6) in the vertical direction, and the upper end of the telescopic member (7) is detachably connected to the first pressure trigger rod (3) directly above it.
5. The anti-extrusion device for an aerial work platform according to claim 4, characterized in that: The lowest point height that the upper end of the telescopic member (7) can reach is lower than the lowest point height of the safety rod (5) and / or the mechanical transmission element (21).
6. The anti-extrusion device for an aerial work platform according to claim 4, characterized in that: The upper end of the telescopic member (7) is magnetically connected to the bottom surface of the first pressure trigger rod (3).
7. The anti-extrusion device for an aerial work platform according to claim 1, characterized in that: The upper end of the mechanical transmission element (21) is inclined and extends upward.
8. The anti-extrusion device for an aerial work platform according to claim 1 or 7, characterized in that: The cross section of the first pressure trigger rod (3) is a bent surface or an arc-shaped surface, and is arranged around the upper side and the outer side of the upper end of the mechanical transmission element (21).
9. The anti-extrusion device for an aerial work platform according to claim 8, characterized in that: The minimum distance between the bottom surface of the first pressure trigger rod (3) and the upper end of the mechanical transmission element (21) is 0-5 cm.