Safety protection device and aerial work platform

Abstract

The utility model discloses a safety protection device and an aerial work platform, and the safety protection device comprises a support which comprises a first arm support and a second arm support which are arranged at an interval; the mounting seat is provided with a magnet assembly, and the mounting seat is connected with the first arm support through the magnet assembly; one end of the pull rope is connected with the second arm support, the other end of the pull rope is connected with the mounting seat through an adjusting assembly, and the adjusting assembly can move relative to the mounting seat to tension the pull rope; and the detection structure is mounted on the first arm frame and used for detecting the contact state of the mounting base and the first arm frame, and if the mounting base is not in contact with the first arm frame, the detection structure sends out a shutdown signal. According to the safety protection device, the installation base is easy to reset, the length of the pull rope can be adjusted, and safety is good.

Description

Technical Field

[0001] The utility model relates to the technical field of aerial work platforms, in particular to a safety protection device and an aerial work platform. Background Art

[0002] The aerial work platform includes a boom mounted on the vehicle body and a work fence installed at the end of the boom. The worker enters the work fence and the boom carries the work fence and the worker to a high place for aerial work. A guardrail is set around the work fence to protect the workers and the electrical control box in the work fence. However, the existing work fence can only play a simple protective function. When an obstacle hits the worker due to a mistake or special circumstances, the work fence cannot play a good protective function. The worker and the electrical control box on the work fence may be injured or damaged, resulting in an accident; especially when an obstacle appears above the platform and the machine continues to rise because the worker does not find it, the worker may be squeezed by the obstacle, and the worker may fail to release the operating handle in time, causing the machine to continue to rise, which will eventually cause a more serious accident.

[0003] In order to reduce the occurrence of the above-mentioned dangers, existing aerial work platforms are usually equipped with safety protection devices, which include a mounting seat, a pull rope and a detection structure. The pull rope is connected to the mounting seat, and the mounting seat is connected to the detection structure. When a worker is in danger, the worker can pull the pull rope to disengage the mounting seat from the detection structure, thereby stopping the aerial work platform. However, existing safety anti-slip devices also have problems that affect the safety of the platform, such as the difficulty in resetting the mounting seat and the inability to adjust the length of the pull rope. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a safety protection device, the mounting base is easy to reset, the length of the pull rope can be adjusted, and the safety is high.

[0005] The utility model also provides an aerial work platform with the above safety protection device.

[0006] The safety protection device according to the first embodiment of the utility model includes:

[0007] A support, comprising a first arm support and a second arm support arranged at an interval;

[0008] A mounting seat is provided with a magnet assembly, and the mounting seat is connected to the first arm through the magnet assembly; a first threaded hole is provided at a first end of the mounting seat in the axial direction;

[0009] A pull rope, one end of which is connected to the second arm support, and the other end of which is connected to the mounting seat through an adjustment component, wherein the adjustment component can move relative to the mounting seat to tighten the pull rope; the adjustment component includes an adjustment screw, which is passed through the first threaded hole and threadedly connected to the first threaded hole;

[0010] The detection structure is installed on the first arm and is used to detect the contact state between the mounting seat and the first arm. If the mounting seat is out of contact with the first arm, the detection structure sends a stop signal.

[0011] The safety protection device according to the embodiment of the utility model has at least the following beneficial effects:

[0012] The mounting base is connected to the first arm of the bracket through a magnet assembly. The connection method is simple and efficient, and the mounting base is easy to disengage and reset. The pull rope is connected to the mounting base through an adjustment assembly, and the adjustment assembly can move relative to the mounting base to tighten the pull rope, effectively avoiding the problem that the pull rope is too loose, resulting in difficulty in triggering the stop signal, and the pull rope is too tight, resulting in erroneous triggering of the stop signal, thereby improving the safety of the aerial work platform.

[0013] According to some embodiments of the present invention, the adjustment assembly further includes a locking nut, which is threadedly connected to the adjustment screw, and the locking nut abuts against a mounting seat to limit the end point of the travel of the adjustment screw.

[0014] According to some embodiments of the utility model, the adjustment assembly further includes a locking cap, and the locking cap is drivingly connected to the locking nut;

[0015] The locking cap is sleeved on the locking nut and is arranged concentrically with the locking nut. The locking cap rotates around its own axis to drive the locking nut to move helically along the adjusting screw.

[0016] According to some embodiments of the utility model, the mounting seat is installed with a locking ring, and the locking ring is connected to the locking cap by a fastener to limit the movement of the locking cap along the axis direction of the adjusting screw, thereby fixing the relative position of the locking nut and the mounting seat.

[0017] According to some embodiments of the utility model, the locking ring is provided with a radially protruding first connecting portion, the locking cap is provided with a radially protruding second connecting portion, and the fastener passes through the first connecting portion and the second connecting portion in sequence to connect the locking ring and the locking cap.

[0018] According to some embodiments of the present utility model, an annular groove is provided on the outer peripheral wall of the mounting seat, the locking ring is installed in the annular groove, and the annular groove is used to limit the movement of the locking ring along the axial direction of the mounting seat.

[0019] According to some embodiments of the utility model, the adjustment assembly further includes a connecting head, the connecting head is connected to the adjustment screw, and the pull rope is rotatably mounted on the connecting head around its own axis.

[0020] According to some embodiments of the utility model, a second threaded hole is provided at the second end in the axial direction of the mounting seat, and the magnet assembly includes a bolt head and a magnet body. The magnet body is installed in the bolt head, and the bolt head is threadedly connected to the second threaded hole.

[0021] The aerial work platform according to the second embodiment of the utility model comprises a platform body and the above-mentioned safety protection device, and the safety protection device is installed above the platform body. Since the aerial work platform of this embodiment comprises the above-mentioned safety protection device, it at least has all the beneficial effects of the safety protection device.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 It is a schematic structural diagram of an embodiment of the first aspect of the utility model;

[0025] Figure 2 for Figure 1 Schematic diagram of the assembly of the middle mounting seat and the pull rope;

[0026] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0027] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0028] Figure Number:

[0029] Support 100, first arm support 110, second arm support 120;

[0030] The mounting seat 200, the magnet assembly 210, the bolt head 211, the magnet body 212, the first threaded hole 220, the second threaded hole 230, and the annular groove 240;

[0031] Pull rope 300;

[0032] Adjustment assembly 400, adjustment screw 410, locking nut 420, locking cap 430, second connection part 431, connection head 440;

[0033] Locking ring 500 and first connecting portion 510 . DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In the description of the present utility model, "a plurality" means more than two. If there is a description of "a first" or "a second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0037] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0038] Reference Figures 1 to 4The safety protection device of the first embodiment of the utility model includes a bracket 100, a mounting seat 200, a pull rope 300, an adjustment component 400 and a detection structure. The bracket 100 includes a first boom 110 and a second boom 120 arranged at intervals. The pull rope 300 is arranged between the first boom 110 and the second boom 120. The first end of the pull rope 300 in the length direction is connected to the first boom 110. The adjustment component 400 is installed at the second end of the pull rope 300 in the length direction. The adjustment component 400 is connected to the mounting seat 200, and the mounting seat 200 is connected to the second boom 120; the detection structure is installed on the first boom 110, and is used to detect the contact state between the mounting seat 200 and the first boom 110. If the mounting seat 200 is out of contact with the first boom 110, the detection structure sends a stop signal, thereby stopping the aerial work platform. Specifically, the mounting base 200 is installed with a magnet assembly 210, and the mounting base 200 is connected to the first arm 110 through the magnet assembly 210. The connection method is simple and efficient, and the mounting base 200 is easy to disengage and reset; the adjustment assembly 400 can move relative to the mounting base 200 to tighten the pull rope 300, effectively avoiding the problem that the pull rope 300 is too loose, resulting in difficulty in triggering the stop signal, and the pull rope 300 is too tight, resulting in erroneous triggering of the stop signal, thereby effectively improving the safety of the aerial work platform.

[0039] In the embodiment of the utility model, the detection structure is preferably a contact switch. When the mounting base 200 is connected to the bracket 100 through the magnet assembly 210, the contact switch will not trigger a shutdown signal; when the mounting base 200 is dragged away from the bracket 100 by the staff, the contact switch triggers a shutdown signal. Using a contact switch to detect the connection state of the mounting base 200 and the bracket 100 has low cost and high reliability.

[0040] Furthermore, the second arm 120 is provided with a mounting hole for inserting the mounting seat 200, and the detection structure is preferably mounted on the inner wall of the mounting hole. Since the mounting seat 200 is connected to the second arm 120 via the magnet assembly 210, it is very convenient to remove the mounting seat 200 from the mounting hole, and it is also convenient to reinstall the mounting seat 200 in the mounting hole.

[0041] In the embodiment of the present invention, a first threaded hole 220 is provided at the first end of the mounting seat 200 in the axial direction, and the adjustment assembly 400 includes an adjustment screw 410, which is passed through the first threaded hole 220 and threadedly connected to the first threaded hole 220. Figure 2As shown, the first threaded hole 220 penetrates the mounting base 200 along the axial direction of the mounting base 200. By changing the depth of the adjusting screw 410 inserted into the first threaded hole 220, the pull rope 300 can be tensioned, thereby avoiding the problem that the pull rope 300 is too loose and difficult to trigger the stop signal, and the pull rope 300 is too tight and causes the stop signal to be erroneously triggered.

[0042] In an embodiment of the present utility model, the adjustment assembly 400 further includes a locking nut 420, which is threadedly connected to the adjustment screw 410, and the locking nut 420 abuts against the mounting seat 200 to limit the travel end position of the adjustment screw 410. Specifically, after the adjustment screw 410 is rotated to a suitable position, the locking nut 420 is tightened to prevent the adjustment screw 410 from further rotating in a direction close to the mounting seat 200, and at the same time, the risk of the adjustment screw 410 and the mounting seat 200 being loosened can be reduced. The adjustment screw 410 is rotated to a suitable position means that the adjustment screw 410 is rotated to a position where the pull rope 300 is tightened.

[0043] In the embodiment of the present utility model, the adjustment assembly 400 further includes a locking cap 430, which is transmission-connected to the locking nut 420; the locking cap 430 is sleeved on the locking nut 420 and is concentrically arranged with the locking nut 420, and the locking cap 430 is used to drive the locking nut 420 to rotate. Figure 2 As shown, the locking cap 430 rotates around its own axis to drive the locking nut 420 to move spirally along the adjusting screw 410. The locking cap 430 is preferably made of plastic material, and the locking cap 430 is provided with radially extending ears. When the locking cap 430 is sleeved on the locking nut 420, the staff can manually twist the locking cap 430 to rotate, thereby driving the locking nut 420 to rotate, so that the locking nut 420 can be rotated and locked without the help of external tools, which effectively improves convenience and reduces the operating threshold.

[0044] In the embodiment of the present invention, the mounting seat 200 is equipped with a locking ring 500, and the locking ring 500 is connected to the locking cap 430 by a fastener to fix the relative position of the adjusting screw 410 and the mounting seat 200. Figure 2 , Figure 3As shown, the locking ring 500 is provided with a radially protruding first connection portion 510, and the locking cap 430 is provided with a radially protruding second connection portion 431. The fastener passes through the first connection portion 510 and the second connection portion 431 in sequence to connect the locking ring 500 and the locking cap 430. The fastener can be a bolt, a buckle, or other structures. The locking ring 500 can be fixedly connected or detachably connected to the mounting seat 200, preferably detachably connected, so as to facilitate the maintenance of the locking ring 500. When the locking cap 430 is sleeved on the locking nut 420, the locking ring 500 and the locking cap 430 are connected by the fastener, which can limit the locking cap 430 from moving along the axial direction of the adjusting screw 410, thereby limiting the locking nut 420 from moving helically along the adjusting screw 410, and achieving the relative position fixation of the locking nut 420 and the mounting seat 200.

[0045] In the embodiment of the present invention, the outer peripheral wall of the mounting seat 200 is provided with an annular groove 240, and the locking ring 500 is installed in the annular groove 240. The annular groove 240 is used to limit the movement of the locking ring 500 along the axial direction of the mounting seat 200. Figure 3 As shown, since the locking ring 500 cannot move along the axial direction of the mounting base 200, when the locking ring 500 and the locking cap 430 are connected by fasteners, the locking cap 430 cannot move along the axial direction of the adjusting screw 410, thereby limiting the spiral movement of the locking nut 420 along the adjusting screw 410, thereby achieving the fixed relative position of the locking nut 420 and the mounting base 200, and improving the stability of the connection between the adjusting screw 410 and the mounting base 200.

[0046] Furthermore, the locking ring 500 is rotatably sleeved in the annular groove 240 around its own axis, and the rotation of the locking ring 500 can drive the first connecting portion 510 to rotate synchronously, thereby facilitating the alignment of the first connecting portion 510 and the second connecting portion 431 .

[0047] In the embodiment of the present invention, the adjustment assembly 400 further includes a connector 440, which is connected to the adjustment screw 410, and the pull rope 300 is rotatably mounted on the connector 440 around its own axis. Figure 4 As shown, the connector 440 is threadedly connected to the adjusting screw 410; after the connector 440 is threadedly connected to the adjusting screw 410, a volume cavity is formed between the connector 440 and the end of the adjusting screw 410, and the connector 440 is provided with a through hole axially penetrating the connector 440, and the through hole is connected to the volume cavity. The end of the pull rope 300 first passes through the through hole, and then a structure with a diameter larger than the through hole is installed at the end of the pull rope 300, or a knot is directly tied at the end of the pull rope 300 so that the end of the pull rope 300 is larger than the diameter of the through hole, and then the adjusting screw 410 and the connector 440 are connected; the diameter of the through hole should be larger than the diameter of the pull rope 300 to prevent the pull rope 300 from twisting when the adjusting screw 410 rotates.

[0048] In the embodiment of the present invention, a second threaded hole 230 is provided at the second end of the mounting seat 200 in the axial direction, and the magnet assembly 210 includes a bolt head 211 and a magnet body 212. The magnet body 212 is installed in the bolt head 211, and the bolt head 211 is threadedly connected to the second threaded hole 230. Figure 2 As shown, the bolt head 211 is provided with a slot for embedding with the magnet body 212, and the magnet body 212 is installed in the slot and connected to the bolt head 211, for example, by bonding or connecting with fasteners. The bolt head 211 is provided for installing the magnet body 212 in order to facilitate the replacement and maintenance of the magnet body 212. After long-term use, the magnetism of the magnet body 212 will lose part of its magnetism due to vibration, high temperature, etc. The magnet body 212 is installed through the bolt head 211, and then when it is found that the magnetism of the magnet body 212 is insufficient, the bolt head 211 and the magnet body 212 can be directly replaced, thereby improving the replacement efficiency and reducing the maintenance cost.

[0049] In an embodiment of the utility model, the first threaded hole 220 and the second threaded hole 230 are connected, so that when processing the first threaded hole 220 and the second threaded hole 230, the first threaded hole 220 axially passing through the mounting seat 200 can be directly processed first, without calculating the processing depth of the first threaded hole 220. Only when processing the second threaded hole 230, the processing depth needs to be calculated, thereby improving processing efficiency and reducing processing costs.

[0050] According to the second aspect of the present invention, the aerial work platform comprises a platform body and the above-mentioned safety protection device, and the safety protection device is installed above the platform body. Since the aerial work platform of this embodiment comprises the above-mentioned safety protection device, it at least has all the beneficial effects of the safety protection device, which will not be described in detail here.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0052] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A safety protection device, characterized in that: include: The support comprises a first arm support and a second arm support which are arranged at intervals; A mounting seat is provided with a magnet assembly, and the mounting seat is connected to the first arm through the magnet assembly; a first threaded hole is provided at a first end of the mounting seat in the axial direction; A pull rope, one end of which is connected to the second arm support, and the other end of which is connected to the mounting seat through an adjustment component, wherein the adjustment component can move relative to the mounting seat to tighten the pull rope; the adjustment component includes an adjustment screw, which is passed through the first threaded hole and threadedly connected to the first threaded hole; The detection structure is installed on the first arm and is used to detect the contact state between the mounting seat and the first arm. If the mounting seat is out of contact with the first arm, the detection structure sends a stop signal.

2. The safety protection device according to claim 1, characterized in that: The adjustment assembly also includes a locking nut, which is threadedly connected to the adjustment screw and abuts against a mounting seat to limit the travel end of the adjustment screw.

3. The safety protection device according to claim 2, characterized in that: The adjustment assembly also includes a locking cap, which is drivingly connected to the locking nut; The locking cap is sleeved on the locking nut and is arranged concentrically with the locking nut. The locking cap rotates around its own axis to drive the locking nut to move helically along the adjusting screw.

4. The safety protection device according to claim 3, characterized in that: The mounting seat is equipped with a locking ring, and the locking ring is connected to the locking cap by a fastener to limit the movement of the locking cap along the axial direction of the adjusting screw, thereby fixing the relative position of the locking nut and the mounting seat.

5. The safety protection device according to claim 4, characterized in that: The locking ring is provided with a radially protruding first connecting portion, the locking cap is provided with a radially protruding second connecting portion, and the fastener passes through the first connecting portion and the second connecting portion in sequence to connect the locking ring and the locking cap.

6. The safety protection device according to claim 4, characterized in that: An annular groove is provided on the outer peripheral wall of the mounting seat, and the locking ring is installed in the annular groove. The annular groove is used to limit the movement of the locking ring along the axial direction of the mounting seat.

7. The safety protection device according to claim 1, characterized in that: The adjustment assembly also includes a connector, which is connected to the adjustment screw, and the pull rope is rotatably mounted on the connector around its own axis.

8. The safety protection device according to claim 1, characterized in that: A second threaded hole is provided at the second end of the mounting seat in the axial direction. The magnet assembly includes a bolt head and a magnet body. The magnet body is installed in the bolt head, and the bolt head is threadedly connected to the second threaded hole.

9. An aerial work platform, characterized in that: It comprises a platform body and the safety protection device according to any one of claims 1 to 8, wherein the safety protection device is installed above the platform body.

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