Aerial work platform

Abstract

The present invention discloses an aerial work platform, comprising a platform body and a guardrail, wherein the guardrail comprises a horizontal guardrail portion and vertical connecting portions arranged at both ends along the length direction of the horizontal guardrail portion, wherein the horizontal portion and the vertical connecting portion are fixedly connected, and further comprising: a connecting rod hinged to the vertical connecting portion and the platform body at both ends, wherein the connecting rod and the vertical connecting portion are arranged in a one-to-one correspondence; and a detachable stopper fixed at the first end of the vertical connecting portion and the connecting rod for shifting the hinge between the two. The aerial work platform provided by the present invention forms a four-bar linkage by hingedly connecting the connecting rod, the vertical connecting portion, and the platform body, and is folded as an integral structure without disassembling the operating handle; the hinged connection between the guardrail and the connecting rod of the four-bar linkage is shifted by the stopper, and the guardrail can be directly removed by opening the stopper, thereby saving disassembly and assembly time.

Description

Technical Field

[0001] The present invention relates to the technical field of aerial work platforms, and more particularly to an aerial work platform. Background Art

[0002] The existing technology uses a flip-up guardrail structure, with the left and right guardrails independent of each other. To operate, the operator first removes the operating handle on the guardrail, then opens the limiter, and finally folds the guardrail in each direction step by step. This structure is cumbersome to operate, and each time the guardrail is folded and opened again, it takes a lot of time. Summary of the Invention

[0003] In view of this, the first object of the present invention is to provide an aerial work platform that can quickly fold or unfold the guardrail without the need for step-by-step folding, shorten the folding and unfolding time of the foldable guardrail, and improve the working speed.

[0004] In order to achieve the above first object, the present invention provides the following technical solutions:

[0005] An aerial work platform comprises a platform body and a guardrail, wherein the guardrail comprises a horizontal guardrail portion and vertical connecting portions fixedly provided at both ends of the horizontal guardrail portion in a longitudinal direction, and further comprises:

[0006] a connecting rod with its ends hinged to the vertical connecting portion and the platform body, the connecting rod being arranged in a one-to-one correspondence with the vertical connecting portion;

[0007] A detachable blocking member is fixedly arranged at the hinge of the vertical connection portion and the connecting rod and can block the hinge of the two.

[0008] Preferably, the vertical connecting portion and the connecting rod are fitted together to form a first overlapping portion, the first overlapping portion is provided with a first rotating shaft arranged in the horizontal direction, the outer cylinder of the first overlapping portion is provided with a first giving way through hole for giving way to the rotation of the inner cylinder of the first overlapping portion around the first rotating shaft, the first giving way through hole is arranged along the axial direction of the first overlapping portion and has an opening on one side that penetrates axially to the end wall of the first overlapping portion.

[0009] Preferably, the first overlapping portion is provided with a fastening bolt arranged in a horizontal direction to form the first rotating axis, and a nut capable of cooperating with the fastening bolt to lock the vertical connecting portion and the connecting rod.

[0010] Preferably, the two side end walls of the first shifting through hole are respectively provided with ear seats protruding from the outer cylinder wall of the first overlapping part, and a shift groove for installing the shifting member is provided between any of the ear seats and the outer cylinder wall of the first overlapping part to shift the rotation of the inner cylinder of the overlapping part around the first rotation axis.

[0011] Preferably, an axially arranged sliding hole is provided on the outer cylindrical wall of the first overlapping portion, a sliding bolt fixed to the shifting member is provided in the sliding hole, and the sliding bolt drives the shifting member to slide in the sliding hole to cooperate with the shifting groove.

[0012] Preferably, the shifting member is a shifting plate.

[0013] Preferably, the connecting rod and the platform body are assembled to form a second overlapping part, the second overlapping part is provided with a second rotation axis arranged in the horizontal direction, and the outer cylinder of the second overlapping part is provided with a second make way through hole for making way for the rotation of the inner cylinder of the second overlapping part around the second rotation axis.

[0014] Preferably, the first clearance through hole and the second clearance through hole are symmetrically arranged along the axis of the connecting rod.

[0015] The aerial work platform provided by the present invention includes a platform body and a guardrail. The guardrail includes a horizontal guardrail portion and vertical connecting portions arranged at both ends along the length direction of the horizontal guardrail portion. The horizontal portion and the vertical connecting portion are fixedly connected. The guardrail also includes: a connecting rod with its two ends hinged to the vertical connecting portion and the platform body respectively, and the connecting rod is arranged in a one-to-one correspondence with the vertical connecting portion; a detachable shifting member fixed at the first end of the vertical connecting portion and the connecting rod for shifting the hinge between the two.

[0016] Compared with the existing technology, the aerial work platform provided by the present invention has the following technical effects:

[0017] First, a four-bar linkage is formed by articulating the connecting rod, vertical connection, and platform body, which can be folded as a whole structure without removing the operating handle. The guardrail and the connecting rod of the four-bar linkage are articulated by a shifting member, and the guardrail can be directly removed by opening the shifting member, saving disassembly and assembly time.

[0018] Second, the connecting rod and the vertical connection portion are hinged and fixed by tightening bolts, so that the guardrail can be in an unfolded state by screwing the tightening bolts when the guardrail needs to be unfolded. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of the deployed structure of a guardrail of an aerial work platform provided by an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of a folding structure of a guardrail of an aerial work platform provided by a first embodiment of the present invention;

[0022] Figure 3 A schematic diagram of the folding structure of a guardrail of an aerial work platform provided in the second embodiment of the present invention.

[0023] The following are marked in the accompanying drawings:

[0024] Platform body 1, connecting rod 2, shift piece 3, guardrail 4, sliding hole 5, shift slot 6;

[0025] Horizontal guardrail portion 41 and vertical connecting portion 42. DETAILED DESCRIPTION

[0026] An embodiment of the present invention discloses an aerial work platform, which can realize rapid folding or unfolding of guardrails without the need for step-by-step folding, shortens the folding and unfolding time of the foldable guardrails, and improves the working speed.

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 3 , Figure 1 A schematic diagram of the deployed structure of a guardrail of an aerial work platform provided by an embodiment of the present invention; Figure 2 A schematic diagram of a folding structure of a guardrail of an aerial work platform provided by a first embodiment of the present invention; Figure 3 A schematic diagram of the folding structure of a guardrail of an aerial work platform provided in the second embodiment of the present invention.

[0029] In a specific embodiment, the aerial work platform provided by the present invention includes a platform body 1, guardrails 4, connecting rods 2, and a shifting member 3. The platform body 1 is generally a rectangular platform, and guardrails 4 are provided on all four sides of the rectangular platform or along a set of opposite sides. When there are multiple guardrails 4, they can be provided with reference to the devices described herein and below. The guardrails 4 include a horizontal guardrail portion 41 and vertical connecting portions 42 provided at both ends of the horizontal guardrail portion 41 in the longitudinal direction. The horizontal portion and the vertical connecting portion 42 are fixedly connected, such as by screws or other threaded parts, or by welding. The vertical connecting portion 42 is generally a hollow structure such as a tube, such as a round tube or a square tube. The two ends of the connecting rod 2 are hinged to the vertical connection part 42 and the platform body 1, respectively, and the connecting rod 2 is arranged in a one-to-one correspondence with the vertical connection part 42; wherein the hinge is achieved by providing an articulated seat, etc., and a four-bar linkage is formed between the platform body 1, the two connecting rods 2 and the guardrail 4 to form an integral structure, wherein the stopper 3 is detachably fixed to the vertical connection part 42 and the first end of the connecting rod 2 to block the hinge between the two. The stopper 3 can be provided as a mechanical structure such as a shift plate or a shift rod to block the hinge between the vertical connection part 42 and the connecting rod 2. In one embodiment, the stopper 3 can be provided as a T-shaped sleeve, which is placed at the hinge of the vertical connection part 42 and the connecting rod 2 to shift the guardrail 4, so that the guardrail 4 is in an unfolded state; when the T-shaped sleeve is removed, the guardrail 4 can rotate around the hinge point to achieve the folding of the guardrail 4, thereby reducing the installation space of the aerial work platform and lowering the height of the vehicle for easy transportation.

[0030] Compared with the existing technology, the aerial work platform provided by the present invention has the following technical effects:

[0031] First, a four-bar linkage is formed by hingedly connecting the connecting rod 2, the vertical connection portion 42, and the platform body 1, which can be folded as an integral structure without removing the operating handle; the hinged connection between the guardrail 4 and the connecting rod 2 of the four-bar linkage is blocked by the shifting member 3, and the guardrail 4 can be directly removed by opening the shifting member 3, thus saving disassembly and assembly time;

[0032] Secondly, the connecting rod 2 and the vertical connection portion 42 are hinged and fixed by tightening the bolts, so that the guardrail 4 can be in an unfolded state by screwing the tightening bolts when the guardrail 4 needs to be unfolded.

[0033] Among them, the vertical connection part 42 and the first end of the connecting rod 2 are fitted together to form a first overlapping part, and the first overlapping part is provided with a first rotating axis arranged in the horizontal direction. It can be understood that the first overlapping part includes an outer tube and an inner tube, the outer tube is one of the vertical connection part 42 and the connecting rod 2, and the inner tube is the other of the vertical connection part 42 and the connecting rod 2. In one embodiment, the vertical connection part 42 is fitted on the outside of the connecting rod 2 to form an outer tube, and the connecting rod 2 forms an inner tube. The first rotation axis passes through the outer cylinder and the inner cylinder. The first rotation axis can generally be realized by setting a bolt. Accordingly, a mounting hole for installing the bolt is provided on the first overlapping part and is loosely matched with the first rotation axis. At the same time, based on this set structure, the outer cylinder of the first overlapping part is provided with a first giveway through hole for giving way to the rotation of the inner cylinder of the first overlapping part around the first rotation axis. The first giveway through hole is arranged along the axial direction of the first overlapping part and one side opening is axially passed through to the end wall of the first overlapping part. The end wall is the end wall close to the side of the connecting rod 2. The first giveway through hole is preferably a strip hole. Furthermore, the first giveway through hole is arranged on one side of the plane where the first rotation axis is located, and the outer cylinder on the other side is in a closed state to prevent the guardrail 4 from rotating in the other direction, reducing the degree of freedom to block the rotation of the guardrail 4.

[0034] Specifically, the first overlapping portion is provided with a fastening bolt arranged in the horizontal direction to form a first rotation axis, and the fastening bolt is fixed to the first overlapping portion via a nut. The vertical connecting portion 42 and the connecting rod 2 are provided with mounting holes for fitting with the fastening bolt, so that the two can rotate relative to the first rotation axis. When in use, the stopper 3 is first removed, and the guardrail 4 and the connecting rod 2 can then rotate around the fastening bolt to achieve the folding of the guardrail 4 and the connecting rod 2.

[0035] In this specific embodiment, the end walls of the first clearance hole are each provided with an ear seat protruding from the outer tube wall of the first overlapping portion. A shifting groove 6 for receiving a shifting member 3 is provided between each ear seat and the outer tube wall of the first overlapping portion, thereby shifting the rotation of the inner tube of the overlapping portion about the first rotation axis. The two ear seats are arranged along the length of the first clearance hole, with a hollow space between them to facilitate the rotation of the inner tube. The shifting groove 6 is provided between the ear seats and the outer tube wall. The shifting member 3 and the shifting groove 6 cooperate to shift the rotation of the inner tube. Preferably, the plane connecting the two shifting grooves 6 is tangential to the outer tube wall to optimize the shifting effect. Furthermore, an axially arranged sliding hole 5 is provided on the outer tube wall of the overlapping portion. A sliding bolt secured to the shifting member 3 is located within the sliding hole 5, which drives the shifting member 3 to slide with the shifting groove 6. This arrangement ensures that the shift plate remains in a fixed relationship with the guardrail 4 during assembly and disassembly, eliminating the need for additional storage space for the shift member 3. This allows for integrated device design and shortens assembly and disassembly time. The sliding hole 5 is a strip-shaped hole, and a sliding bolt is fixedly connected to the shift member 3. For example, the sliding bolt passes through the sliding hole 5 and is secured with a nut. After the shift member 3 is positioned, the sliding bolt and nut are tightened to secure the relative position of the shift member 3 and the guardrail 4, further enhancing the stability of the device. Furthermore, when the position of the shift member 3 needs to be changed, the nut is loosened to allow the sliding bolt to slide within the sliding hole 5, achieving a position change. This allows the shift member 3 to be changed using the sliding bolt, eliminating the need for a separate storage space for the shift member 3. This optimizes storage space, prevents loss, and facilitates transportation.

[0036] Furthermore, the connecting rod 2 and the platform body 1 are nested together to form a second overlapping portion. The second overlapping portion is provided with a second rotation axis arranged horizontally. The outer cylinder of the second overlapping portion is provided with a second clearance hole for allowing the inner cylinder of the second overlapping portion to rotate about the second rotation axis. Similarly, the second overlapping portion includes an outer cylinder and an inner cylinder, the outer cylinder being one of the connecting rod 2 and the platform body 1, and the inner cylinder being the other of the connecting rod 2 and the platform body 1. The second rotation axis and the first rotation axis are coplanar. The structure of the second overlapping portion is preferably identical to that of the first overlapping portion, with the first clearance hole and the second clearance hole being symmetrically arranged along the axis of the connecting rod. The first clearance hole and the second clearance hole are oriented in opposite directions, with the first clearance hole facing inward and the second clearance hole facing outward. The second overlapping portion is hinged and fixed to the connecting rod 2 and the platform body 1 via a second fastening bolt, thereby maintaining the connecting rod 2 in an upright position.

[0037] The limit plate is stuck between the connecting rod 2 and the folding guardrail 4, which can prevent the connecting rod 2 from rotating. The entire platform guardrail 4 is fixed and in working condition; loosen the sliding bolt on the limit plate, lift the limit plate, and disconnect it from the platform body 1. At this time, the connecting rod 2 is in a rotatable state; hold the folding guardrail 4 with your hand, and the guardrail 4 can be rotated on the platform body 1 through the connecting rod 2. The rotating connecting rod 2 is a parallel four-link 2 structure. The folding guardrail 4 is always a horizontal structure, and the operating handle hanging on the guardrail 4 will not have any effect; rotate the folding platform to the lowest position and reach the final design position. This is for folding the vehicle to facilitate vehicle transportation and enter areas with limited space; otherwise, open the guardrail 4.

[0038] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0039] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An aerial work platform, comprising a platform body and a guardrail, wherein the guardrail comprises a horizontal guardrail portion and vertical connecting portions fixed at both ends of the horizontal guardrail portion in a longitudinal direction, characterized in that: Also includes: A connecting rod with two ends hinged to the vertical connecting portion and the platform body, the connecting rod and the vertical connecting portion being arranged in a one-to-one correspondence; a shifting member detachably fixed to the hinge of the vertical connection portion and the connecting rod and capable of shifting the hinge between the two; The vertical connecting portion and the connecting rod are fitted together to form a first overlapping portion, the first overlapping portion is provided with a first rotating shaft arranged in the horizontal direction, the outer cylinder of the first overlapping portion is provided with a first paving hole for paving the inner cylinder of the first overlapping portion to rotate around the first rotating shaft, the first paving hole is arranged along the axial direction of the first overlapping portion and has an opening on one side that axially penetrates through the end wall of the first overlapping portion; The end walls of both sides of the first shifting through hole are respectively provided with ear seats protruding from the outer cylinder wall of the first overlapping part, and a shifting groove for mounting the shifting member is provided between any of the ear seats and the outer cylinder wall of the first overlapping part to shift the rotation of the inner cylinder of the first overlapping part around the first rotation axis; A sliding hole is provided on the outer cylinder wall of the first overlapping portion along the axial direction, a sliding bolt fixed to the shifting member is provided in the sliding hole, and the sliding bolt drives the shifting member to slide in the sliding hole to cooperate with the shifting groove; The connecting rod and the platform body are assembled to form a second overlapping portion, the second overlapping portion is provided with a second rotation axis arranged in the horizontal direction, and the outer cylinder of the second overlapping portion is provided with a second clearance hole for making way for the rotation of the inner cylinder of the second overlapping portion around the second rotation axis; The first clearance through hole and the second clearance through hole are symmetrically arranged along the axis of the connecting rod; The sliding hole is a strip-shaped hole, and the sliding bolt is fixedly connected to the stopper. The sliding bolt is fixed by a nut after passing through the sliding hole. After the stopper is fixed, the sliding bolt and the nut are tightened to fix the relative position of the stopper and the guardrail; The first overlapping portion is provided with a fastening bolt arranged in a horizontal direction to form the first rotating axis, and a nut capable of cooperating with the fastening bolt to lock the vertical connecting portion and the connecting rod.

2. The aerial work platform according to claim 1, characterized in that: The shifting member is a shifting plate.

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