Anti-extrusion safety control device for aerial work platform

Abstract

The utility model relates to the technical field of engineering machinery, and discloses an aerial work platform anti-extrusion safety control device which comprises two anti-extrusion fixing frames adjustably arranged at the left end and the right end of a work platform. The anti-extrusion fixing frame on the right side is fixed to one end of a magnetic detection rod, the other end, penetrating through the limiting mechanism, of the magnetic detection rod is fixedly provided with a magnetic detection head, the magnetic detection head can be attracted to the left fixing base, and the magnetic detection head can be in contact with the left fixing base or can not be in contact with the left fixing base; the limiting mechanism and the left fixing base are fixedly connected with the anti-extrusion fixing frame on the left side. And a proximity switch sensing device is fixed on the anti-extrusion fixing frame on the left side and directly faces the magnetic detection head. By arranging the limiting mechanism, the magnetic detection rod and the magnetic detection head can be supported, so that operators are prevented from being injured by crashing and the working platform is prevented from being collided; and the two anti-extrusion fixing frames are adjustable, so that the installation and debugging time is greatly shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to an anti-extrusion safety control device for an aerial work platform. Background Art

[0002] When working on aerial work platforms at height, in the event of an operator error or equipment loss of control, there's no quick way to stop the equipment, leaving personal safety uncertain. Existing technical solutions include a magnetic detection rod and a proximity switch sensor installed on the platform's guardrail. In the event of a person being squeezed or losing control, a hand or body contact disengages the magnetic detection rod, effectively disabling the aerial work platform's control system and shutting it down.

[0003] However, the existing technology has the following defects:

[0004] (1) When the magnetic detection rod is disconnected, the head of the magnetic detection rod moves vertically downward due to the influence of gravity, which poses a risk of injuring the operator and may hit the aerial work platform, causing damage and failing to guarantee product quality.

[0005] (2) The anti-extrusion bracket is fixed on the working platform. During debugging, the anti-extrusion bracket cannot be adjusted, which results in the inability to adjust the docking distance of the magnetic detection head. This places high requirements on the size and assembly of each component. Utility Model Content

[0006] The purpose of the utility model is to provide an anti-extrusion safety control device for an aerial work platform, which can support the magnetic detection rod and the magnetic detection head by setting a limit mechanism to avoid injuring the operator and bumping the work platform;

[0007] It is adjustable through two anti-extrusion fixing brackets, which greatly reduces the installation and debugging time and improves production efficiency.

[0008] The above technical objectives of the present invention are achieved through the following technical solutions:

[0009] An anti-extrusion safety control device for an aerial work platform comprises two anti-extrusion fixing frames arranged at the left and right ends of a work platform; the anti-extrusion fixing frame on the right is fixed to one end of a magnetic detection rod, the magnetic detection rod is a pull rope tensioned by tension, and the other end of the magnetic detection rod passes through a limiting mechanism and is fixed with a magnetic detection head, which can be attracted to a left fixing seat, and the magnetic detection head and the left fixing seat may or may not be in contact; the limiting mechanism and the left fixing seat are both fixedly connected to the anti-extrusion fixing frame on the left; a proximity switch sensing device is fixed on the anti-extrusion fixing frame on the left, the proximity switch sensing device is directly opposite to the magnetic detection head, and the proximity switch sensing device is electrically connected to an operation control system.

[0010] Through the above technical solution, in normal working state, the magnetic detection rod is in a tensioned state, the magnetic detection head is attracted to the left fixed seat, and the proximity switch sensing device can detect the presence of the magnetic detection head; when the staff is squeezed or in other uncontrollable situations, the staff touches the magnetic detection rod with their hands or bodies, and the magnetic detection rod is bent under the force, causing the magnetic detection head to separate from the left fixed seat. After the position of the magnetic detection head moves, the proximity switch sensing device can no longer detect the magnetic detection head. The proximity switch sensing device transmits a signal to the operation control system, and the operation control system stops the aerial work platform from working, thereby protecting the staff.

[0011] The magnetic detection rod can be pulled by the limit mechanism, and the magnetic detection head can only automatically move downward a short distance, thereby preventing the magnetic detection head from hitting the staff.

[0012] The utility model is further configured as follows: one end of the magnetic detection rod located on the right anti-extrusion fixing frame passes through the right fixing seat, the right fixing seat is opposite to the limiting mechanism, and the right fixing seat is fixedly connected to the anti-extrusion fixing frame on the right side.

[0013] Through the above technical solution, the limiting mechanism, the right fixing seat and the magnetic detection head are located on the same straight line, which facilitates the attraction and separation of the magnetic detection head and the left fixing seat.

[0014] The utility model is further configured as follows: the limiting mechanism is formed with a slot with an upper opening, the magnetic detection rod passes through the slot, and the outer diameter of the magnetic detection head is greater than the slot width of the slot.

[0015] Through the above technical solution, the installation of the magnetic detection rod is facilitated by the opening on the upper side of the slot, and the magnetic detection head can be blocked from passing through the slot to the other end, thereby preventing the magnetic detection head and the magnetic detection rod from falling.

[0016] The utility model is further configured as follows: the working platform includes a protection rail and a connecting plate fixed to the protection rail;

[0017] An adjustment plate is fixed on the anti-extrusion fixing frame; an adjustment hole is formed on the adjustment plate, a locking screw is sleeved on the adjustment hole, and the locking screw is screwed on the connecting plate, and the aperture of the adjustment hole is larger than the outer diameter of the locking screw.

[0018] Through the above technical solution, the adjustment hole can be adjusted in any direction on the locking screw, so that the positions of the two anti-extrusion fixing frames relative to the working platform have adjustment margin, thereby facilitating the debugging of the magnetic detection head and the magnetic detection rod, and facilitating the adjustment of the docking distance between the magnetic detection head and the left fixing seat.

[0019] The utility model is further configured as follows: a support rod is fixed on the protection railing;

[0020] An auxiliary plate is fixed on the anti-extrusion fixing frame, a U-shaped bolt is sleeved on the auxiliary plate, the U-shaped bolt is inserted into the support rod, and the protruding end of the U-shaped bolt passes through the auxiliary plate and is screwed with a locking nut.

[0021] After the magnetic detection head and the magnetic detection rod are debugged, the anti-extrusion fixing frame is preliminarily locked by the locking screw, and then the U-bolt is passed through the support rod and the auxiliary plate and screwed onto the locking nut, and then the locking nut is tightened to further fix the relative position of the anti-extrusion fixing frame and the work platform, thereby improving the stability of the anti-extrusion fixing frame.

[0022] The outstanding effects of the utility model are:

[0023] Compared with the existing technology, after the magnetic detection rod and the magnetic detection head are separated from the left fixed seat under the action of external force, the support of the limit mechanism can effectively prevent the magnetic detection rod and the magnetic detection head from automatically falling and injuring workers and the work platform;

[0024] The anti-extrusion fixing frame leaves an adjustable margin, which facilitates the adjustment of the docking distance between the magnetic detection rod and the magnetic detection head, and can reduce the size requirements of each component and the difficulty of assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of the utility model;

[0026] Figure 2 This is a schematic diagram after part of the working platform is hidden;

[0027] Figure 3 for Figure 2 A partial enlarged view of A;

[0028] Figure 4 It is a partial top view of the utility model;

[0029] Figure 5 This is a schematic diagram of the magnetic detection head of the present invention when it is attracted;

[0030] Figure 6 This is a schematic diagram of the magnetic detection head of the present invention when it is disconnected.

[0031] Reference numerals: 1. working platform; 2. anti-extrusion fixing frame; 3. left fixing seat; 4. magnetic detection rod; 5. magnetic detection head; 6. limit mechanism; 7. proximity switch sensing device; 8. right fixing seat;

[0032] 61. Card slot;

[0033] 101. Guardrail; 102. Connecting plate; 103. Support rod;

[0034] 201. Adjustment plate; 202. Auxiliary plate; 203. Adjustment hole; 204. Locking screw; 205. U-bolt; 206. Locking nut. DETAILED DESCRIPTION

[0035] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0036] The following references Figures 1 to 6 The following describes the embodiments of the present invention:

[0037] An anti-extrusion safety control device for an aerial work platform, such as Figure 1 As shown, it includes two anti-extrusion fixing frames 2 arranged at the left and right ends of the working platform 1; the anti-extrusion fixing frame 2 on the right is fixed to one end of the magnetic detection rod 4, and the other end of the magnetic detection rod 4 passes through the limiting mechanism 6 and is fixed with a magnetic detection head 5, and the magnetic detection head 5 can be attracted to the left fixing seat 3, and the magnetic detection head and the left fixing seat can be in contact or not in contact; the limiting mechanism 6 and the left fixing seat 3 are both fixedly connected to the anti-extrusion fixing frame 2 on the left; a proximity switch sensing device 7 is fixed on the anti-extrusion fixing frame 2 on the left, and the proximity switch sensing device 7 is opposite to the magnetic detection head 5, and the proximity switch sensing device 7 is electrically connected to the operation control system.

[0038] Through the above technical solution, in normal working state, the magnetic detection rod is in a tensioned state, the magnetic detection head is attracted to the left fixed seat, and the proximity switch sensing device can detect the presence of the magnetic detection head; when the staff is squeezed or in other uncontrollable situations, the staff touches the magnetic detection rod with their hands or bodies, and the magnetic detection rod is bent under the force, causing the magnetic detection head to separate from the left fixed seat. After the position of the magnetic detection head moves, the proximity switch sensing device can no longer detect the magnetic detection head. The proximity switch sensing device transmits a signal to the operation control system, and the operation control system stops the aerial work platform from working, thereby protecting the staff.

[0039] The magnetic detection rod can be pulled by the limit mechanism, and the magnetic detection head can only automatically move downward a short distance, thereby preventing the magnetic detection head from hitting the staff.

[0040] like Figure 2 As shown, the magnetic detection rod 4 of this embodiment is located on one end of the anti-extrusion fixing frame 2 on the right side and passes through the right fixing seat 8. The right fixing seat 8 is opposite to the limiting mechanism 6. The right fixing seat 8 is fixedly connected to the anti-extrusion fixing frame 2 on the right side.

[0041] Through the above technical solution, the limiting mechanism, the right fixing seat and the magnetic detection head are located on the same straight line, which facilitates the attraction and separation of the magnetic detection head and the left fixing seat.

[0042] like Figure 3 As shown, the limiting mechanism 6 of this embodiment is formed with a slot 61 with an upper opening, the magnetic detection rod 4 passes through the slot 61 , and the outer diameter of the magnetic detection head 5 is larger than the slot width of the slot 61 .

[0043] Through the above technical solution, the installation of the magnetic detection rod is facilitated by the opening on the upper side of the slot, and the magnetic detection head can be blocked from passing through the slot to the other end, thereby preventing the magnetic detection head and the magnetic detection rod from falling.

[0044] like Figure 2 、 Figure 4 As shown, the working platform 1 of this embodiment includes a protection rail 101 and a connecting plate 102 fixed on the protection rail 101;

[0045] An adjustment plate 201 is fixed on the anti-extrusion fixing frame 2; an adjustment hole 203 is formed on the adjustment plate 201, and a locking screw 204 is sleeved on the adjustment hole 203. The locking screw 204 is screwed on the connecting plate 102, and the aperture of the adjustment hole is larger than the outer diameter of the locking screw.

[0046] Through the above technical solution, the adjustment hole can be adjusted in any direction on the locking screw, so that the positions of the two anti-extrusion fixing frames relative to the working platform have adjustment margin, thereby facilitating the debugging of the magnetic detection head and the magnetic detection rod, and facilitating the adjustment of the docking distance between the magnetic detection head and the left fixing seat.

[0047] A support rod 103 is fixed on the protection fence 101;

[0048] An auxiliary plate 202 is fixed on the anti-extrusion fixing frame 2 , and a U-bolt 205 is sleeved on the auxiliary plate 202 . The U-bolt 205 is inserted into the support rod 103 . The U-bolt 205 passes through the protruding end of the auxiliary plate 202 and is screwed with a locking nut 206 .

[0049] After the magnetic detection head and the magnetic detection rod are debugged, the anti-extrusion fixing frame is preliminarily locked by the locking screw, and then the U-bolt is passed through the support rod and the auxiliary plate and screwed onto the locking nut, and then the locking nut is tightened to further fix the relative position of the anti-extrusion fixing frame and the work platform, thereby improving the stability of the anti-extrusion fixing frame.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications based on the above assumptions should also be regarded as within the scope of protection of the present invention.

Claims

1. An anti-extrusion safety control device for an aerial work platform, comprising two anti-extrusion fixing frames (2) arranged at the left and right ends of a work platform (1); characterized in that: The anti-extrusion fixing frame (2) on the right side is fixed to one end of the magnetic detection rod (4), and the other end of the magnetic detection rod (4) passing through the limiting mechanism (6) is fixed with a magnetic detection head (5), and the magnetic detection head (5) can be attracted to the left fixing seat (3); the limiting mechanism (6) and the left fixing seat (3) are both fixedly connected to the anti-extrusion fixing frame (2) on the left side; a proximity switch sensing device (7) is fixed on the anti-extrusion fixing frame (2) on the left side, and the proximity switch sensing device (7) is directly opposite to the magnetic detection head (5).

2. The anti-extrusion safety control device for an aerial work platform according to claim 1, characterized in that: One end of the magnetic detection rod (4) located on the right anti-extrusion fixing frame (2) passes through the right fixing seat (8), the right fixing seat (8) is directly opposite to the limiting mechanism (6), and the right fixing seat (8) is fixedly connected to the right anti-extrusion fixing frame (2).

3. The anti-extrusion safety control device for an aerial work platform according to claim 1, characterized in that: The limiting mechanism (6) is formed with a slot (61) with an upper opening, the magnetic detection rod (4) passes through the slot (61), and the outer diameter of the magnetic detection head (5) is greater than the slot width of the slot (61).

4. The anti-extrusion safety control device for an aerial work platform according to claim 1, characterized in that: The working platform (1) comprises a protection rail (101) and a connecting plate (102) fixed on the protection rail (101); An adjustment plate (201) is fixed on the anti-extrusion fixing frame (2); an adjustment hole (203) is formed on the adjustment plate (201); a locking screw (204) is sleeved on the adjustment hole (203); the locking screw (204) is screwed onto the connecting plate (102); and the diameter of the adjustment hole is larger than the outer diameter of the locking screw.

5. The anti-extrusion safety control device for an aerial work platform according to claim 4, characterized in that: A support rod (103) is fixed on the protection fence (101); An auxiliary plate (202) is fixed on the anti-extrusion fixing frame (2), a U-shaped bolt (205) is sleeved on the auxiliary plate (202), the U-shaped bolt (205) is inserted into the support rod (103), and the protruding end of the U-shaped bolt (205) passes through the auxiliary plate (202) and is screwed with a locking nut (206).

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