Portable non-slip extendable stepladder

Abstract

To provide a portable non-slip telescopic stepladder. The stepladder (1) includes a first support (11) and a second support (12), a connecting member (2) where the first support and the second support are hingedly connected by the connecting member and the first and second support can be unfolded or contracted to be parallel when folded, and a resting member (4) provided at the end of the second support away from the connecting member and including a support post, the resting member having a V-shaped groove formed inside the support post. The hinged connection between the first and second support posts makes folding and storage easier for workers, and the V-shaped groove formed inside the provided support post increases the contact area with the photovoltaic power generation bracket beam, ensuring that the stepladder can rest more stably on one side of the photovoltaic power generation bracket beam and ensuring the work safety of workers involved in the daily operation and maintenance of the photovoltaic power plant.

Description

[Technical Field]

[0001] The present invention relates to the technical field of telescopic ladders, and in particular to portable anti-slip telescopic ladders. [Background technology]

[0002] In the daily operation and maintenance of a solar power plant, to ensure the efficient and stable operation of the power generation system, inspectors must periodically perform general patrol inspections of the solar cell modules, perform fault checks to quickly locate abnormalities, and perform maintenance operations such as module replacement as necessary. Since solar power generation brackets are usually several meters high, all of these operations require inspectors to frequently climb to the top of the brackets using a stepladder.

[0003] Currently, in the inspection and maintenance process of photovoltaic power plants, traditional stepladders are often used to climb and work, but these stepladders have obvious lack of anti-slip effect, and the stepladders have low support stability, especially on slopes, crushed stone ground, or in rainy and snowy weather conditions, and the stepladders are prone to slipping and falling, increasing the risk of workers falling off the stepladders; in addition, traditional stepladders cannot adapt to uneven terrain, so operation and maintenance workers often need to temporarily find and level objects such as bricks, wooden boards, etc., and when setting up the stepladders, workers need to make repeated adjustments, which increases the work time. Summary of the Invention

[0004] Therefore, the technical problem that this invention aims to solve is that the ground conditions of conventional solar power plants are complex, making it impossible to stably support traditional stepladders, and there are certain safety risks.

[0005] The above technical problems are solved by the following technical solutions. a stepladder including a first support and a second support; a connecting member, wherein the first support column and the second support column are hingedly connected by the connecting member, and the first support column and the second support column can be expanded or contracted in parallel and folded; a support member provided at an end of the second support column away from the connecting member, the support member including a support column, the support column having a V-shaped groove formed therein; We propose a portable, non-slip, extendable stepladder equipped with a

[0006] In one preferred embodiment of the portable anti-slip telescopic ladder described in the present invention, the connecting member includes a first turntable fixedly connected to the first support column, a second turntable fixedly connected to the second support column, a bearing base provided inside the first turntable, and a fastener for fixing the second turntable and the first turntable; The first and second turntables rotate relative to each other.

[0007] In one preferred embodiment of the portable non-slip telescopic ladder described in the present invention, the end of the first support rod away from the first turntable is provided with a ladder end fitting; the stepladder end piece is hingedly connected to the first support post; Nails are provided through the surface of the step ladder end fittings.

[0008] In one preferred embodiment of the portable anti-slip telescopic stepladder described in the present invention, the restraint member includes a rotating shaft installed inside the support pole, a contact plate that rotates around the center line of the rotating shaft, a clamping plate that rotates synchronously with the contact plate, and a torsion spring fitted on the outside of the rotating shaft.

[0009] In one preferred embodiment of the portable non-slip telescopic ladder described in the present invention, a trigger block is provided at an end of the contact plate, and an end of the contact plate away from the trigger block is fitted to the outside of the rotation shaft; a pressing block is provided at an end of the clamping plate, and an end of the clamping plate away from the pressing block is fitted onto the outside of the rotating shaft; The contact plate is provided opposite the clamping plate, and the contact plate and the clamping plate rotate synchronously with each other along with the rotation shaft.

[0010] In one preferred embodiment of the portable non-slip telescopic ladder described in the present invention, the trigger block penetrates the side wall of the support pole and extends into the V-shaped groove; The torsion spring can urge the trigger block into position within the V-shaped groove.

[0011] In one preferred embodiment of the portable anti-slip telescopic ladder described in the present invention, the pressing block penetrates the support pole and extends to the outside thereof; The trigger block is pressed by the solar power generation bracket beam to enter the inside of the support column, and the pressing block extends into the V-shaped groove and abuts against the solar power generation bracket beam.

[0012] In one preferred embodiment of the portable anti-slip telescopic ladder described in the present invention, one end of the torsion spring abuts against the abutment plate, and the other end abuts against the clamping plate.

[0013] In one preferred embodiment of the portable non-slip telescopic ladder described in the present invention, the trigger block is made of rubber; The pressing block is made of rubber.

[0014] In one preferred embodiment of the portable anti-slip telescopic stepladder described in the present invention, an anti-slip washer is provided on the inner wall of the V-shaped groove near the abutment plate.

[0015] The beneficial effects of this invention are as follows: the first and second support posts are hinged, which makes it easier for workers to fold and store the ladder; the support posts have V-shaped grooves inside, which increase the contact area with the solar photovoltaic bracket beam, ensuring that the ladder can lean more stably on one side of the solar photovoltaic bracket beam and ensuring the safety of workers. [Brief explanation of the drawings]

[0016] In order to more clearly explain the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings of the embodiments of the present invention. Of course, the drawings described below are only a part of the embodiments of the present invention and do not limit the present invention.

[0017] [Figure 1] A schematic diagram of the telescopic stepladder in the unfolded state is shown. [Figure 2] 1 shows a schematic diagram of a telescopic stepladder in a folded state. [Figure 3] A schematic diagram of the exploded structure of the stepladder and connecting member is shown. [Figure 4] A schematic diagram of the three-dimensional structure of the leaning member is shown. [Figure 5] A schematic diagram of the exploded structure of the restraint member is shown. [Figure 6] A structural schematic diagram of a half cross section of a support column is shown. [Figure 7] A schematic diagram of the structure of an extendable stepladder is shown. DETAILED DESCRIPTION OF THE INVENTION

[0018] In order to make the present invention more easily understandable to those skilled in the art, the present invention will be described in more detail below in conjunction with specific embodiments and drawings.

[0019] The terms used in this invention are general terms currently widely used in this field in consideration of the function of this invention, but these terms may change based on the intention of those skilled in the art, precedents, or new technology in this field. In addition, specific terms may be selected by the applicant, and in this case, their detailed meanings will be explained in the detailed description of this invention. Therefore, the terms used in this specification should not be understood as simple names, but should be based on the meanings of the terms and the overall description of this invention.

[0020] 1 to 8, this embodiment provides a portable anti-slip telescopic stepladder comprising: a stepladder 1 including a first support 11 and a second support 12; a connecting member 2, wherein the first support 11 and the second support 12 are hingedly connected by the connecting member 2, and the first support 11 and the second support 12 can be expanded in parallel or contracted and folded; and a resting member 4, which is provided at the end of the second support 12 away from the connecting member 2 and includes a support column 41, and wherein a V-shaped groove 411 is opened inside the support column 41.

[0021] It should be noted that the first support 11 and the second support 12 are both made of stainless steel, and the insides of the first support 11 and the second support 12 are both hollow, which not only ensures that the entire stepladder is lightweight, but also ensures that the stepladder has a high load-bearing capacity.

[0022] Specifically, the surfaces of the first support 11 and the second support 12 are coated with an insulating material, the entire stepladder is heated, and then electrostatically adsorbed polyethylene PE powder is melted onto the surface by spray coating or dipping, and finally cooled and hardened to form a thick plastic coating film.

[0023] Furthermore, when the first support 11 and the second support 12 are connected by the connecting member 2 and the stepladder needs to lean diagonally on one side of the solar photovoltaic bracket beam, the first support 11 and the second support 12 can be unfolded horizontally and then the position between the first support 11 and the second support 12 can be fixed by the locking device, thereby ensuring that the stepladder is suitable for maintenance and cleaning work on solar photovoltaic panels at high altitudes.

[0024] When the stepladder needs to be carried and moved, the first support 11 and the second support 12 can be folded together to reduce the overall volume of the stepladder, making it easier for the worker to carry it around.

[0025] When there is no support beam and the working position is low, the stepladder can be unfolded into a "person" shape to make it easier for workers to climb and work, and the structure of this device can be flexibly adjusted according to different usage scenarios.

[0026] It should be noted that the inside of the support pillar 41 is a hollow structure, the material of the support pillar 41 is the same as that of the second support pillar 12, and its surface is similarly coated with an insulating material, and the support pillar 41 and the second support pillar 12 are connected and fixed by bolts.

[0027] Specifically, a V-shaped groove 411 is opened inside the support column 41, which allows the stepladder to lean on one side of the solar power bracket beam more easily. The inner wall of the V-shaped groove 411 contacts the solar power bracket beam, increasing the contact area and ensuring that the stepladder can lean on one side of the solar power bracket more stably.

[0028] Referring to Figures 1 to 4, as an optional embodiment, the connecting member 2 includes a first turntable 21 fixedly connected to the first support column 11, a second turntable 22 fixedly connected to the second support column 12, a bearing base 23 provided inside the first turntable 21, and a fastening fitting 24 for fixing the second turntable 22 and the first turntable 21, and the first turntable 21 and the second turntable 22 rotate relative to each other.

[0029] It should be noted that the inside of the first turntable 21 and the second turntable 22 is a hollow structure, and the surfaces of the first turntable 21 and the second turntable 22 are both coated with insulating material to ensure the insulation of the entire stepladder, and there are two sets of connecting members 2, which are respectively connected to the pillars on both sides of the first support pillar 11 and the second support pillar 12.

[0030] Specifically, the first turntable 21 and the first support 11 are connected and fixed by bolts, the second turntable 22 and the second support 12 are connected and fixed by bolts, the bearing base 23 and the first turntable 21 are fixedly connected, and a rotating shaft fitted inside the bearing base 23 is connected to the side of the second turntable 22 closest to the bearing base 23, and the provided bearing base 23 ensures smoother rotation of the first turntable 21 and the second turntable 22.

[0031] The fastening fitting 24 includes a knob provided on the outside of the second turntable 22 and a screw that penetrates into the inside of the second turntable 22, and a thread bush that engages with the screw is provided inside the first turntable 21, and by turning the knob, the screw can be driven to rotate, and the engagement between the screw and the thread bush further drives the second turntable 22 to move safely closer to the first turntable 21, thereby bringing the first turntable 21 and the second turntable 22 into close contact and further ensuring the fixed position between the first turntable 21 and the second turntable 22.

[0032] In order to further ensure the fixed stability of the first turntable 21 and the second turntable 22, meshing ring gears are provided on the abutting end surfaces of the first turntable 21 and the second turntable 22, and the meshing ring gears have a trapezoidal structure. After the first turntable 21 approaches the second turntable 22, the two sets of meshing ring gears intersect and mesh with each other, thereby limiting the rotation between the first turntable 21 and the second turntable 22.

[0033] Furthermore, at the end of the first support 11 away from the first turntable 21, a step end fitting 3 is provided which is hingedly connected to the first support 11, and a nail 5 is provided to penetrate the surface of the step end fitting 3.

[0034] In order to ensure that the stepladder end 3 can form a stable support on the sloping ground, the stepladder end 3 and the first support 11 are hingedly connected, thereby ensuring that the stepladder end 3 is always flush with the sloping ground and ensuring the structural stability of the stepladder.

[0035] In order to further prevent the stepladder end fitting 3 from slipping, the nails 5 are provided penetrating the surface of the stepladder end fitting 3, and the nails 5 penetrate deep underground after penetrating the stepladder end fitting 3, thereby further ensuring the positional stability of the stepladder end fitting 3 and preventing the stepladder end fitting 3 from slipping.

[0036] 1 to 7, in one embodiment provided in the present application, the restraint member 4 includes a rotating shaft 42 provided inside a support column 41, a contact plate 43 that rotates around the center line of the rotating shaft 42, a clamping plate 44 that rotates in synchronization with the contact plate 43, and a torsion spring 45 fitted onto the outside of the rotating shaft 42.

[0037] It should be noted that the rotating shaft 42 is located on one side of the bottom of the V-shaped groove 411, the axis of the rotating shaft 42 and the center line of the V-shaped groove 411 are located on the same horizontal plane, and the rotating shaft 42 is located at an intermediate position, thereby ensuring that the reversal trajectories of the contact plate 43 and the clamping plate 44 are always symmetrical with respect to the center line of the V-shaped groove 411.

[0038] Furthermore, a trigger block 431 is provided at the end of the abutment plate 43, and the end of the abutment plate 43 away from the trigger block 431 is fitted onto the outside of the rotating shaft 42, and a pressing block 441 is provided at the end of the clamping plate 44, and the end of the clamping plate 44 away from the pressing block 441 is fitted onto the outside of the rotating shaft 42, the abutment plate 43 and the clamping plate 44 are arranged opposite each other, and the abutment plate 43 and the clamping plate 44 rotate synchronously along with the rotating shaft 42.

[0039] It should be noted that the connection positions of the abutment plate 43 and the rotating shaft 42 are located near both ends of the rotating shaft 42, the provided trigger block 431 is located near the middle position of the rotating shaft 42, the connection positions of the clamping plate 44 and the rotating shaft 42 are located near both ends of the rotating shaft 42, and the pressing block 441 is located near the middle of the rotating shaft 42.

[0040] The contact plate 43 and the clamping plate 44 are arranged coaxially on the outside of the rotating shaft 42, and the contact plate 43 and the rotating shaft 42 are press-fitted together, and the clamping plate 44 and the rotating shaft 42 are press-fitted together, so that when the rotating shaft 42 rotates, the contact plate 43 and the clamping plate 44 can be driven to rotate in synchronous reverse.

[0041] Furthermore, the trigger block 431 penetrates the side wall of the support column 41 and extends into the V-shaped groove 411 , and the torsion spring 45 can drive the trigger block 431 to be disposed inside the V-shaped groove 411 .

[0042] It should be noted that the trigger block 431 is located inside the V-shaped groove 411, and under normal conditions, the elastic potential energy of the torsion spring 45 drives the trigger block 431 to extend into the V-shaped groove 411, and when the stepladder is placed on the solar power bracket beam, the trigger block 431 abuts against the upper part of the solar power bracket beam, and the weight of the stepladder presses the trigger block 431 inward.

[0043] Furthermore, the pressing block 441 penetrates the support column 41 and extends to the outside thereof, the trigger block 431 is pressed by the solar power generation bracket beam and enters the inside of the support column 41, the pressing block 441 extends to the inside of the V-shaped groove 411 and abuts against the solar power generation bracket beam, one end of the torsion spring 45 abuts against the abutment plate 43 and the other end abuts against the clamping plate 44.

[0044] It should be noted that the pressing block 441 is located at the center of the rotation axis 42. After the worker steps onto the ladder, the worker's own gravity causes the support post 41 to move downwards toward the solar bracket beam. The trigger block 431 is pressed by the solar bracket beam and moves into the support post 41. The abutment plate 43 rotates, driving the clamping plate 44 to rotate. As the clamping plate 44 rotates, the pressing block 441 abuts against the other side of the solar bracket beam. At this time, the inner wall on one side of the V-shaped groove 411 abuts against the upper surface of the solar bracket beam, and the pressing block 441 abuts against the lower surface of the solar bracket beam. The combination of the pressing block 441 and the V-shaped groove 411 clamps the outer side of the solar bracket beam, ensuring that the position of the support post 41 fixed to the outer side of the solar bracket beam does not change, and further realizing the fixed position between the ladder and the solar bracket.

[0045] After the worker steps down from the stepladder, the torsion spring 45 releases the elastic potential energy, urging the clamping plate 44 to invert, and the clamping plate 44 can rotate to a position away from the solar power generation bracket beam, thereby making it easier for the worker to remove the stepladder comfortably.

[0046] Furthermore, the trigger block 431 is made of rubber, and the pressing block 441 is made of rubber.

[0047] It should be noted that the trigger block 431 and the pressing block 441 are both made of rubber, which can more easily clamp the outer surface of the solar photovoltaic bracket beam. If the trigger block 431 and the pressing block 441 are made of nitrile rubber, they have high wear resistance and can effectively prevent slippage.

[0048] Furthermore, an anti-slip washer is provided on the inner wall of the V-shaped groove 411 near the contact plate 43.

[0049] As described above, this device uses the combination of the pressure block 441 and the V-shaped groove 411 to fix the position of the stepladder using the worker's own gravity, further ensuring the worker's work safety. After the worker steps down from the stepladder, the self-lock of the stepladder can be unlocked, allowing the worker to transport the stepladder more easily.

[0050] Finally, it should be pointed out that the methods and apparatuses described in detail above are merely examples, and that those skilled in the art can modify these examples in different ways without departing from the scope of the invention.

[0051] It is important to note that the above embodiments are only intended to illustrate the technical solutions of the present invention, not to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, it is understood by those skilled in the art that modifications or equivalent replacements can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, all of which shall fall within the scope of the present utility model claims.

Claims

1. A stepladder (1) including a first support (11) and a second support (12); a connecting member (2), wherein the first support column (11) and the second support column (12) are hingedly connected by the connecting member (2), and the first support column (11) and the second support column (12) can be deployed in parallel or contracted and folded; a support member (4) provided at an end of the second support (12) away from the connecting member (2) and including a support post (41), the support post (41) having a V-shaped groove (411) formed therein; A portable anti-slip telescopic stepladder comprising:

2. The connecting member (2) includes a first rotating disk (21) fixedly connected to the first support column (11), a second rotating disk (22) fixedly connected to the second support column (12), a bearing base (23) provided inside the first rotating disk (21), and a fastening metal fitting (24) for fixing the second rotating disk (22) and the first rotating disk (21), The first turntable (21) and the second turntable (22) rotate relative to each other. The portable anti-slip telescopic stepladder according to claim 1.

3. A step end fitting (3) is provided at the end of the first support (11) away from the first turntable (21), The stepladder end piece (3) is hingedly connected to the first support (11), The surface of the stepladder end fitting (3) is provided with nails (5) penetrating therethrough. The portable anti-slip telescopic stepladder according to claim 2.

4. The restraining member (4) includes a rotating shaft (42) provided inside the support column (41), a contact plate (43) that rotates around the center line of the rotating shaft (42), a clamping plate (44) that rotates in synchronization with the contact plate (43), and a torsion spring (45) fitted to the outside of the rotating shaft (42). The portable anti-slip telescopic stepladder according to claim 3.

5. A trigger block (431) is provided at an end of the abutment plate (43), and the end of the abutment plate (43) away from the trigger block (431) is fitted onto the outside of the rotation shaft (42), A pressing block (441) is provided at an end of the clamping plate (44), and the end of the clamping plate (44) away from the pressing block (441) is fitted onto the outside of the rotating shaft (42), The contact plate (43) is provided opposite the clamping plate (44), and the contact plate (43) and the clamping plate (44) rotate synchronously with the rotation shaft (42). The portable anti-slip telescopic stepladder according to claim 4.

6. The trigger block (431) penetrates the side wall of the support column (41) and extends into the V-shaped groove (411); The torsion spring (45) can drive the trigger block (431) to be disposed inside the V-shaped groove (411). The portable anti-slip telescopic stepladder according to claim 5.

7. The pressing block (441) penetrates the support column (41) and extends to the outside thereof, The trigger block (431) is pressed by the solar power generation bracket beam to enter the inside of the support column (41), and the pressing block (441) extends into the V-shaped groove (411) and abuts against the solar power generation bracket beam. The portable anti-slip telescopic stepladder according to claim 6.

8. One end of the torsion spring (45) is in contact with the contact plate (43), and the other end is in contact with the clamping plate (44). The portable anti-slip telescopic stepladder according to claim 7.

9. The material of the trigger block (431) is rubber, The material of the pressing block (441) is rubber. The portable anti-slip telescopic stepladder according to claim 8.

10. An anti-slip washer is provided on the inner wall of the V-shaped groove (411) near the contact plate (43).

10. The portable anti-slip telescopic stepladder according to claim 9.

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