Portable foldable pedal for fan box transformer substation

Abstract

The embodiment of the utility model discloses a portable foldable pedal for a fan box transformer substation, and is characterized in that the foldable pedal comprises a first folding plate and a second folding plate, the first folding plate and the second folding plate are hinged at a first edge, the first folding plate and the second folding plate are hinged at a second edge and a third edge through connecting rods respectively, and the connecting rods are connected with the first folding plate and the second folding plate. The expansion angle of the first folding plate and the second folding plate is limited; a plurality of first hooks are arranged on the face, away from the second folding plate, of the first folding plate so that the first folding plate can be fixed to the fan box transformer substation. According to the portable foldable pedal, the two folding plates are spliced and unfolded to form an angle suitable for a worker to tread during use, and the folding plates can be folded to complete storage to reduce occupied space; meanwhile, the fixing effect and safety can be guaranteed through the hook fixing mode and the connecting rod hinging mode on the two sides, manual climbing in the fan box transformer substation overhauling process can be facilitated, and the operation efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of maintenance auxiliary equipment, and in particular to a portable foldable pedal for a fan box transformer. Background Art

[0002] Wind turbine transformers, also known as combined transformers for wind power generation, are primarily used in wind power generation systems to boost the voltage of electricity generated by wind turbines so that it can be more efficiently transmitted to the power grid. Wind turbine transformers often involve maintenance and operational requirements, such as strengthening on-site inspections of the transformers, promptly detecting and addressing abnormalities in the transformers, and preventing possible fires or other accidents. Currently, although most wind turbine transformers are still installed on the ground, they are inherently at a certain height. For example, the top of a typical wind turbine transformer is over 1.5 meters high. During equipment maintenance, employees often need to climb to the top of the transformer to carry out work. Since the height of the transformer is close to a person's height, climbing with bare hands is inconvenient and poses certain safety risks. On the other hand, using existing auxiliary tools such as scaffolding and fire ladders is not portable enough, increasing transportation costs.

[0003] The Chinese patent application number 202223355614.0 discloses "a foldable pedal for a wind turbine box transformer foundation", which includes a pedal and a support rod. The pedal and the support rod are both hinged on the box transformer foundation, and the hinge point of the support rod is located below the hinge point of the pedal. The support rod and the pedal are detachably connected. This solution sets a foldable pedal on the box transformer foundation without occupying arable land. It effectively solves the problem that the non-independent wind turbine box transformer foundation in the wind farm has a large height difference between the arable land and the box door, and it is inconvenient to build steps when land acquisition is limited, making it inconvenient to open the box transformer door. However, this solution is also more limited because the pedal is fixed on the box transformer foundation. It cannot be applied to different wind turbine box transformers as needed and will lead to an increase in installation costs. Therefore, considering the disadvantages of existing products, it is necessary to design an auxiliary tool that is both easy to use and easy to carry. Utility Model Content

[0004] The main purpose of this application is to provide a portable foldable pedal for a wind turbine box transformer, aiming to solve the technical problem in the prior art of lack of portable and easy-to-use auxiliary equipment for wind turbine box transformer maintenance.

[0005] To achieve the above objectives, the present application proposes a portable foldable pedal for a wind turbine box transformer, the foldable pedal comprising: a first folding plate and a second folding plate, the first folding plate and the second folding plate being hinged at a first edge, the first folding plate and the second folding plate being hinged at a second edge and a third edge respectively by connecting rods to limit the unfolding angle of the first folding plate and the second folding plate;

[0006] A plurality of first hooks are provided on a side of the first folding plate away from the second folding plate to fix the first folding plate on the fan box.

[0007] For example, in the portable foldable pedal provided by at least one embodiment of the present application, the first folding plate and the second folding plate are hinged on the second edge and the third edge respectively by at least two connecting rods, and adjacent connecting rods are hinged.

[0008] For example, in the portable foldable pedal provided by at least one embodiment of the present application, the first folding plate is provided with a second hook on one side thereof.

[0009] For example, in the portable foldable pedal provided by at least one embodiment of the present application, two of the first hooks and two of the second hooks are provided, and the distance between the two second hooks is smaller than the distance between the two first hooks.

[0010] For example, in the portable foldable pedal provided by at least one embodiment of the present application, the first folding plate is provided with at least two symmetrical support pads on one side of the first hook, and the two support pads are provided on a side close to the first edge.

[0011] For example, in the portable foldable pedal provided by at least one embodiment of the present application, the support pad is a buffer block made of rubber material or a built-in spring member.

[0012] For example, in the portable foldable pedal provided by at least one embodiment of the present application, a plurality of striped protrusions are provided on a side of the second folding plate close to the first folding plate.

[0013] For example, in the portable foldable pedal provided by at least one embodiment of the present application, the striped protrusion extends from the second edge to the third edge and is wavy.

[0014] For example, in a portable foldable pedal provided by at least one embodiment of the present application, the first folding plate is respectively provided with two hinge positions on the second edge and the third edge, and the second folding plate is respectively provided with two baffles on the second edge and the third edge, and each baffle is provided with a number of hinge holes.

[0015] For example, in the portable foldable pedal provided by at least one embodiment of the present application, a structural reinforcement is provided on a surface of the second folding plate away from the first folding plate.

[0016] Compared with existing auxiliary equipment for fan box transformers, the foldable pedal of the present application has at least the following beneficial effects: by rotating the first folding plate and the second folding plate, the pedal can be unfolded to form an angle suitable for workers to step on during use, and can also be folded to complete storage to reduce space occupancy; at the same time, the hook fixation and the hinged connection of the connecting rods on both sides can also ensure the fixing effect and safety. The hinged connection of the connecting rods on both sides can not only limit the unfolding angle of the first folding plate and the second folding plate, but also facilitate the folding and closing of the two folding plates. The foldable pedal of the present application can facilitate manual climbing during the maintenance of the fan box transformer, improve work efficiency, and is also easy to carry and apply to different fan box transformers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application 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 application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0018] Figure 1 A schematic structural diagram of an embodiment of a foldable pedal provided in this application;

[0019] Figure 2 for Figure 1 A structural side view of an embodiment of a foldable pedal;

[0020] Figure 3 for Figure 1 and Figure 2 A diagram showing a foldable pedal in a stowed state in an embodiment of the present invention;

[0021] Figure numerals: 1. first folding plate; 2. second folding plate; 3. first connecting rod; 4. second connecting rod; 5. first hook; 6. second hook; 7. support pad; 8. striped protrusion; 9. baffle; 10. structural reinforcement.

[0022] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0027] like Figure 1 The present invention illustrates an embodiment of a portable foldable step for a fan box transformer, comprising a first foldable plate 1 and a second foldable plate 2. The first foldable plate 1 and the second foldable plate 2 are hinged at a first edge, and are hinged at a second edge and a third edge, respectively, by connecting rods to limit the unfolding angle of the first foldable plate 1 and the second foldable plate 2. Two symmetrical first hooks 5 are provided on a side of the first foldable plate 1 facing away from the second foldable plate 2, for securing the first foldable plate 1 to the fan box transformer.

[0028] Specifically, the first folding plate 1 and the second folding plate 2 can be of comparable size and similar or identical shape. Considering the use scenario of supporting the operator's gravity, the first folding plate 1 and the second folding plate 2 are more preferably made of metal materials such as alloys or steel. The hinge method can be achieved through pin-connection, shaft-connection, etc. in the existing technology, and this embodiment is not limited to this. In addition, a first hook 5 is configured on one side of the first folding plate 1 for hooking to a certain position on the fan box—for example, the fan box's heat dissipation grille—to thereby fix the position of the pedal. The second folding plate 2 is used for the operator to step on after being unfolded at a certain angle with the first folding plate 1.

[0029] It should be noted that in the embodiment of the foldable pedal, the first edge involved refers to an edge of the common side used by the two folding plates to achieve rotational connection (or hinge), and the second edge and the third edge refer to edges extending at both ends of the first edge and having different directions from the first edge. Taking a rectangular folding plate as an example, the first edge can be a wide side of the rectangular folding plate (the wide side is hinged to the wide side of the other folding plate, and the edge relationship of the other folding plate is the same). Under this condition, the second edge and the third edge are the two long sides of the rectangular folding plate. In this embodiment, the first folding plate 1 and the second folding plate 2 both have corresponding first edges, second edges and third edges. With regard to the folding plate structure of this embodiment, the first edge can be commonly referred to as a corner edge, and the second edge and the third edge can be referred to as two side edges. Of course, the structure of this embodiment does not deny the existence of any other possible folding plate forms, such as other polygonal folding plates.

[0030] In this embodiment, the first folding plate 1 and the second folding plate 2 are hinged at the second edge and the third edge respectively by a connecting rod to fix or limit the opening and closing angle of the first folding plate 1 and the second folding plate 2. At the same time, the hinged connection also enables the first folding plate 1 and the second folding plate 2 to rotate relative to each other without obstruction, thereby achieving folding. For example, the connecting rod is in the form of a hydraulic telescopic rod, with both ends hinged at the second edge of the first folding plate 1 and the second folding plate 2 respectively. When unfolding, the hydraulic rod extends, and the angle change at the hinge is coordinated to thereby change the relative angle between the first folding plate 1 and the second folding plate 2; when retracting, the hydraulic rod shortens, and the angle change at the hinge is coordinated to close the first folding plate 1 and the second folding plate 2.

[0031] In other embodiments, the first folding plate 1 and the second folding plate 2 are hinged on the second edge and the third edge respectively by two common connecting rods, wherein one end of each connecting rod is hinged to the first edge or the second edge, and the other end is hinged to one end of the other connecting rod.

[0032] See also Figure 1On the second edge or the third edge, the first folding plate 1 is hinged with a first connecting rod 4, and the second folding plate 2 is hinged with a second connecting rod 3, and the free ends of the first connecting rod 4 and the second connecting rod 3 are also connected in a hinged form. During use, when the first folding plate 1 and the second folding plate 2 need to be unfolded, the angles of the two connecting rods change as the rotation position of the folding plates changes. When the two connecting rods form a straight line, under the action of the deadweight of the second folding plate or when carrying an operator, the two connecting rods form a triangular structure with the first folding plate 1 and the second folding plate 2, thereby limiting the unfolding angle of the first folding plate 1 and the second folding plate 2, ensuring that the operator will not fall after stepping on the folding plate. When folding, the first folding plate 1 and the second folding plate 2 are folded together, and the two connecting rods rotate with the hinge position on the edge of the folding plate as the center of the circle. Since the middle hinge position between the two connecting rods is free to move, it can cooperate with the rotation of the fixed hinge position of each connecting rod to realize the folding and retracting of the connecting rods, which will not hinder the folding of the two folding plates, and realize the pedal folding function of the present application at a lower cost.

[0033] It should be noted that in the above embodiment, more than two connecting rods can be used. The purpose is that more connecting rods can extend its working length. Proper adjustment of the hinge position on the two folding plates can improve the load capacity of the foldable pedal.

[0034] In some embodiments, the portable foldable pedal provided in the present application is further provided with two symmetrical second hooks 6 on one side of the first folding plate 1 provided with the first hook 5 , and the distance between the two second hooks 6 is smaller than the distance between the two first hooks 5 .

[0035] Since the main fixing point of the foldable pedal of the present application on the wind turbine case is the first hook 5, and it also has to support the weight of the operator, although the structural strength of the fixing point can be enhanced by welding the hook or an integrated molding process, there is a certain risk of structural imbalance from the perspective of force analysis. Therefore, the force distribution of the first folding plate 1 can be improved by designing a second hook 6 on the first folding plate 1 and adjusting its position, thereby avoiding this problem. In this embodiment, it is proposed to configure the symmetrical second hook 6 below the first hook 5 or above the first edge, and adjust the spacing between the two second hooks 6 to be smaller than the spacing between the first hooks 5. The effect is that when the operator steps on the second folding plate 2, the first folding plate 1 is hooked on the wind turbine case, and the force on its upper half and lower half is not uniform. By changing the position of the hook point, its force distribution can be adjusted to ensure structural stability and thus safety. The added fixing point itself can also strengthen the fixing and support effect of the pedal.

[0036] Furthermore, based on the above embodiment, the first folding plate 1 is also equipped with at least two symmetrical support pads 7 on the side with the first hook 5. The two support pads 7 are arranged on the side close to the first edge. Taking the first folding plate 1 and the second folding plate 2 as an example, when the first folding plate 1 and the second folding plate 2 are unfolded 90 degrees, when the operator steps on the second folding plate 2, the force acting on the bottom is significantly greater than that on the top, which may cause the first edge to abut against the fan housing, posing a certain safety threat to the use of the pedal. This embodiment adds support pads 7 at corresponding positions for buffering or balancing, which can decompose or offset some of the force, thereby improving safety.

[0037] Preferably, the support pad 7 is a buffer block made of rubber material or a built-in spring member.

[0038] In some embodiments, a surface of the second folding plate 2 close to the first folding plate 1 is provided with a plurality of stripe protrusions 8 .

[0039] Specifically, the striped protrusions 8 are arranged on the side of the second folding plate 2 for the operator to step on, and their function is to increase the friction coefficient of the surface to avoid slipping and accidents caused by shoes or damp environment.

[0040] In the above embodiment, the striped protrusions 8 can further be arranged to extend from the second edge to the third edge in a wavy shape. In layman's terms, the striped protrusions 8 in this embodiment are arranged in a transverse wavy form on the second folding plate 2. The advantage of this arrangement is that, compared to linear protrusions, it can maximize the effect of the protrusions in changing the friction coefficient.

[0041] In some embodiments, the first folding plate 1 is respectively configured with two hinge positions on the second edge and the third edge, and the second folding plate 2 is respectively configured with two baffles 9 on the second edge and the third edge, and each baffle 9 is configured with a plurality of hinge holes.

[0042] On the basis of the aforementioned embodiment, the present embodiment further improves the first folding plate 1 and the second folding plate 2, and hinges the two folding plates through a baffle 9 and hinge holes and positions, so that the lateral connection of the first folding plate 1 and the second folding plate 2 is safer and more reliable while also maintaining the integrity of the pedal storage, thereby further reducing the occupied space and facilitating carrying.

[0043] In some embodiments, a structural reinforcement 10 is provided on the side of the second folding plate 2 away from the first folding plate 1. The structural strength of the second folding plate 2 can be enhanced by reinforcing ribs to form a more stable structure supporting operators of different weights.

[0044] The foldable pedal in the embodiment of the present application is connected by rotating the first folding plate 1 and the second folding plate 2 so that when in use, it can be unfolded to form an angle suitable for workers to step on, and can also be folded to complete storage to reduce space occupancy; at the same time, the hook fixation and the hinged connection of the connecting rods on both sides can also ensure the fixing effect and safety. The hinged connection of the connecting rods on both sides can not only limit the unfolding angle of the first folding plate 1 and the second folding plate 2, but also facilitate the folding and closing of the two folding plates. The foldable pedal of the present application can facilitate manual climbing during the maintenance of the wind turbine box and improve work efficiency. It is also easy to carry and can be used on different wind turbine boxes.

[0045] The above description is merely an optional embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made using the contents of the present application specification and drawings under the inventive concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A portable foldable pedal for a fan box transformer, characterized in that: The foldable pedal comprises: a first folding plate and a second folding plate, wherein the first folding plate and the second folding plate are hinged at a first edge, and the first folding plate and the second folding plate are hinged at a second edge and a third edge respectively by connecting rods to limit the unfolding angle of the first folding plate and the second folding plate; A plurality of first hooks are provided on a side of the first folding plate away from the second folding plate to fix the first folding plate on the fan box.

2. The portable foldable pedal according to claim 1, characterized in that: The first folding plate and the second folding plate are hinged on the second edge and the third edge respectively through at least two connecting rods, and adjacent connecting rods are hinged.

3. The portable foldable pedal according to claim 1, characterized in that: The side of the first folding plate provided with the first hook is also provided with a second hook.

4. The portable foldable pedal according to claim 3, characterized in that: Two of the first hooks and two of the second hooks are provided, and the distance between the two second hooks is smaller than the distance between the two first hooks.

5. The portable foldable pedal according to claim 1, characterized in that: The side of the first folding plate provided with the first hook is also provided with at least two symmetrical support pads, and the two support pads are provided on a side close to the first edge.

6. The portable foldable pedal according to claim 5, characterized in that: The support pad is a buffer block made of rubber material or a built-in spring member.

7. The portable foldable pedal according to claim 1, characterized in that: A surface of the second folding plate close to the first folding plate is provided with a plurality of stripe protrusions.

8. The portable foldable pedal according to claim 7, characterized in that: The striped protrusions extend from the second edge to the third edge and are wavy.

9. The portable foldable pedal according to claim 1, wherein: The first folding plate is respectively provided with two hinge positions on the second edge and the third edge, and the second folding plate is respectively provided with two baffles on the second edge and the third edge, and each baffle is provided with a plurality of hinge holes.

10. The portable foldable pedal according to claim 1, wherein: A structural reinforcement is disposed on a surface of the second folding plate away from the first folding plate.

Images