Automatic brake system working footbord

Abstract

The present invention relates to a work platform with an automatic brake device, and more specifically, to a work platform with an automatic brake device that is moved by a conveying wheel when pushed by a worker, and when the worker steps onto the platform, the brake is applied so that it is not moved on the ground. According to an embodiment of the present invention, an automatic brake device work platform is provided, which is easy to move via a rotating wheel in normal circumstances and does not move when a worker steps on it for work by engaging a brake. The platform comprises: a fixed platform formed in the shape of a square plate so as to serve as a platform for the worker during work; a platform leg formed in the shape of a square column and connected to the lower side of the corner of the fixed platform; a height-adjustable support coupled to the lower surface of the platform leg and supported on the ground, and capable of height adjustment so that the platform leg can be raised and lowered; and an elastic transfer unit coupled to one side of the lower end of the platform leg and providing elastic force to the platform leg so that the worker can transfer the work platform. The elastic transfer unit is characterized in that when the work platform is pushed in a horizontal direction, the work platform is transferred on the ground, and when a predetermined load is applied to the fixed platform, the height-adjustable support touches the ground so that the work platform is not transferred on the ground.

Description

Technology Field

[0001] The present invention relates to a work platform with an automatic brake device, and more specifically, to a work platform with an automatic brake device that is moved by a conveying wheel when pushed by a worker, and when the worker steps onto the platform, the brake is applied so that it is not moved on the ground. Background Technology

[0002] Generally, work platforms or workbenches are designed to be pushed and moved by a worker.

[0003] These mobile work platforms are equipped with wheels and are designed to allow workers to easily move the platform at the work site.

[0004] However, conventional mobile work platforms have a problem in that they easily shift when a worker steps onto them, forcing the worker to work in an unsafe condition.

[0005] To address these issues, locking devices are being added to prevent movement, or platforms that automatically lock when they reach a specific position are being developed; however, switching between movement and locking functions is often inconvenient or inefficient, leading to reduced worker convenience and necessitating improvements.

[0006] As a background technology for an invention related thereto, Korean Patent Publication No. 10-2024-0029871 (liftable work platform device) has been disclosed.

[0007] The disclosed lifting work platform device comprises: a lifting platform unit having a plurality of housing-type box bodies configured to move up and down in a telescoping manner; a lifting drive unit configured to be provided inside the lifting platform unit and to raise and lower the innermost box body of the lifting platform unit; a rolling wheel provided on the lifting platform unit; and a handle provided on one side of the lifting platform unit. The problem to be solved

[0008] The problem that the present invention aims to solve is to provide a work platform with an automatic braking device that, in order to solve the aforementioned conventional problems, allows for movement via wheels when pushed by a worker under normal circumstances, but applies a brake and prevents the platform from moving when a worker steps onto the platform.

[0009] The technical problems to be solved by the present invention are not limited to those mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art to which the present invention belongs from the description below. means of solving the problem

[0010] The automatic brake device work platform of the present invention, as a means of solving the problem to achieve the above objective, is a work platform that is easy to move via rotating wheels in normal circumstances, and does not move when a worker steps on it for work by engaging the brake. It comprises: a fixed platform formed in the shape of a square plate so as to serve as a platform for the worker during work; a platform leg formed in the shape of a square column and connected to the lower corner of the fixed platform; a height-adjustable support coupled to the lower surface of the platform leg and supported on the ground, and capable of height adjustment so that the platform leg can be raised and lowered; and an elastic transfer unit coupled to one side of the lower end of the platform leg and providing elastic force to the platform leg so that the worker can transfer the work platform. The elastic transfer unit is characterized in that when the work platform is pushed in a horizontal direction, the work platform is transferred on the ground, and when a predetermined load is applied to the fixed platform, the height-adjustable support touches the ground, so that the work platform is not transferred on the ground.

[0011] Additionally, the elastic conveying member comprises: a mounting member coupled to one side of the lower end of the footrest leg; a linear bushing detachably fastened to one side of the mounting member and having a predetermined cylindrical hole formed therein with a bearing embedded therein; a shaft fastened to the cylindrical hole of the linear bushing and capable of linear movement in a direction perpendicular to the ground through the bearing; a spring arranged to surround the shaft and providing elastic force; a wheel support fastened to the lower side of the shaft and capable of rotating 360 degrees in a direction horizontal to the ground; and a conveying wheel fastened to the wheel support; thereby providing an automatic brake device work platform.

[0012] In addition, the automatic brake device work platform is provided, characterized in that both sides of the mounting member are formed in a trapezoidal shape with a wider surface connected to the footrest leg side so as to distribute stress applied due to the load. Effects of the invention

[0013] The automatic braking device work platform of the present invention, as described above, can be transported via conveying wheels, and when a worker steps onto the platform, it is automatically fixed to the ground, thereby increasing the worker's work efficiency.

[0014] And the effects obtainable from the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description below. Brief explanation of the drawing

[0015] FIG. 1 is a perspective view of an automatic brake device work platform according to an embodiment of the present invention. FIG. 2 is a drawing showing the extended state of the spring of the elastic transfer unit according to an embodiment of the present invention. FIG. 3 is a drawing showing the compressed state of the spring of the elastic transfer unit according to an embodiment of the present invention. FIG. 4 is a diagram showing the stress concentration generated according to the shape of the mounting member according to an embodiment of the present invention. FIG. 5 is a drawing showing the appearance of a mounting member according to an embodiment of the present invention. FIG. 6 is a drawing showing an actual product of an automatic brake device work platform according to an embodiment of the present invention. Specific details for implementing the invention

[0016] Hereinafter, various embodiments of this document are described with reference to the accompanying drawings. However, this is not intended to limit the technology described in this document to specific embodiments and should be understood to include various modifications, equivalents, and / or alternatives to the embodiments of this document. In relation to the description of the drawings, similar reference numerals may be used for similar components.

[0017] In this document, expressions such as "have," "can have," "include," or "can include" refer to the existence of the relevant feature (e.g., numerical values, functions, actions, or components, etc.) and do not exclude the existence of additional features.

[0018] In this document, expressions such as “A or B,” “at least one of A or / and B,” or “one or more of A or / and B” may include all possible combinations of items listed together. For example, “A or B,” “at least one of A and B,” or “at least one of A or B” may refer to cases including (1) at least one A, (2) at least one B, or (3) both at least one A and at least one B.

[0019] The terms used in this document are used merely to describe specific embodiments and are not intended to limit the scope of other embodiments. Singular expressions may include plural expressions unless the context clearly indicates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as generally understood by those skilled in the art described in this document. Terms used in this document that are defined in general dictionaries may be interpreted as having the same or similar meaning as they have in the context of the relevant technology, and are not to be interpreted in an ideal or overly formal sense unless explicitly defined in this document. In some cases, even terms defined in this document may not be interpreted to exclude the embodiments of this document.

[0020] It is understood that various modifications can be made by those skilled in the art without departing from the essence of the invention as claimed in the claims of the present invention, and such modifications should not be understood individually from the technical spirit or perspective of the present invention.

[0021] According to an embodiment of the present invention, in a work platform with an automatic brake device that is easy to move via a rotating wheel in normal circumstances and does not move when a worker steps on it for work, the platform comprises: a fixed platform (10) formed in the shape of a square plate so as to serve as a platform for the worker during work; a platform leg (20) formed in the shape of a square column and connected to the lower corner of the fixed platform (10); and a height-adjustable support (30) coupled to the lower surface of the platform leg (20) and supported on the ground, which is height-adjustable so that the platform leg (20) can be raised and lowered. The automatic brake device work platform is provided, comprising: a resilient transfer unit (40) which is coupled to one side of the lower end of the platform leg (20) to allow the worker to transfer the work platform and provides elastic force to the platform leg (20); wherein the resilient transfer unit (40) is characterized in that when the work platform is pushed horizontally, the work platform is transferred on the ground, and when a predetermined load is applied to the fixed platform (10), the height adjustment support (30) touches the ground and the work platform is not transferred on the ground.

[0022] The automatic brake device work platform of the present invention may be configured to include a fixed platform (10), a platform leg (20), a height-adjustable support (30), and a resilient transfer unit (40).

[0023] The above fixed platform (10) can be formed in the shape of a square plate and can serve as a platform when the worker performs tasks such as construction or maintenance at a high position.

[0024] The above fixed footrest (10) may have a number of protrusions formed on it or be treated with a non-slip coating so that the worker does not slip while working, and a rubber or silicone pad may be additionally placed to increase friction with the shoes worn by the worker.

[0025] The above footrest legs (20) may be provided to extend to the lower side of the corners of the above fixed footrest (10), and in an embodiment of the present invention, a square plate-shaped fixed footrest (10) is adopted and a total of four footrest legs (20) are applied, one for each corner.

[0026] The above footrest (20) can be formed in various lengths as long as it allows a worker to easily perform work at a high position, and a foldable or longitudinally extendable footrest (20) may be applied.

[0027] The height-adjustable support (30) is attached to the lower side of the footrest leg (20) and can be placed on the ground to support the work platform when the worker steps onto the fixed platform (10).

[0028] The above elastic transfer unit (40) can serve the function of transferring the work platform of the present invention when the worker pushes it, and allowing the work platform to be placed on the ground without being transferred when the worker steps onto the platform.

[0029] A detailed description of the above elastic transfer unit (40) will be given later.

[0030] Additionally, the elastic transfer unit (40) comprises: a mounting member (41) coupled to one side of the lower end of the footrest leg (20); a linear bushing (42) that is detachably fastened to one side of the mounting member (41) and has a predetermined cylindrical hole formed therein and has a bearing embedded therein; a shaft (43) that is fastened to the cylindrical hole of the linear bushing (42) and is capable of linear movement in a direction perpendicular to the ground through the bearing; a spring (44) that is arranged to surround the shaft (43) and provides elastic force; a wheel support (45) that is fastened to the lower side of the shaft (43) and is capable of rotating 360 degrees in a direction horizontal to the ground; and a transfer wheel (46) that is fastened to the wheel support (45); thereby providing an automatic brake device work platform.

[0031] The elastic transfer unit (40) of the present invention may be configured to include a mounting member (41), a linear bushing (42), a shaft (43), a spring (44), a wheel support (45), and a transfer wheel (46).

[0032] The above mounting member (41) is a support member that connects the linear bushing (42) and the footrest leg (20), and may be composed of a certain metal material to withstand the stress generated in the linear bushing (42) and the footrest leg (20). However, it may be changed to various other materials as long as it can withstand the generated stress.

[0033] The above linear bushing (42) can be used together with the shaft (43) to guide the movement of the shaft (43) smoothly and accurately.

[0034] The above linear bushing (42) may have a ball bearing or roller bearing built in to minimize friction at the contact surface with the shaft (43), and may be made of a high-strength material so as to minimize wear or breakage and provide stable performance even when a high load is applied.

[0035] The shaft (43) is connected to the linear bushing (42) to perform rotational or linear motion, and when a worker steps onto the fixed platform (10), the linear bushing (42) located on the upper part of the shaft (43) is guided along the outer surface of the shaft (43) and can descend.

[0036] The spring (44) can be positioned to wrap around the shaft (43) and can be compressed when a worker steps onto the work platform and extended again when the worker steps down to adjust the position of the linear bushing (42) relative to the shaft (43). At this time, it is preferable to install a bushing at the location where the linear bushing (42) and the spring (44) come into contact to prevent the snap ring and rubber cover of the linear bushing (42) from being damaged.

[0037] The wheel support (45) and the conveying wheel (46) are attached to the lower side of the shaft (43) and perform the function of conveying the work platform of the present invention when a force is applied in a direction horizontal to the ground while there is no worker on the fixed platform (10).

[0038] Additionally, the automatic brake device work platform is provided, characterized in that both sides of the mounting member (41) are formed in a trapezoidal shape with a wider surface connected to the footrest leg (20) side so as to distribute the stress applied due to the load.

[0039] FIG. 3 is a diagram showing how a load applied to the work platform of the present invention generates stress in a specific part of the mounting member (41). The mounting member (41) connecting the linear bushing (42) and the mounting member (41) is subjected to various forms of stress, such as compression, tension, and shear, internally. At this time, stress concentration may occur in the cross-section or structurally weak parts of the mounting member (41), which may result in breakage or deformation.

[0040] Therefore, as shown in Fig. 3, it is preferable to form both sides of the mounting member (41) in a trapezoidal shape so as to disperse the concentration of stress.

[0041] In addition, a handle may be provided on one side of the fixed platform (10), and the worker can use the handle to easily move the platform.

[0042] With the above configuration, the automatic brake device work platform of the present invention can be moved in the direction in which force is applied through the conveying wheel (46) when a worker pushes it in a direction horizontal to the ground.

[0043] Additionally, when a worker steps onto the fixed platform (10), the spring (44) is compressed and the linear bushing (42) descends along the outer surface of the shaft (43), and accordingly, the platform leg (20) connected to the linear bushing (42) descends together and settles on the ground, thereby allowing the work platform to be fixed without moving on the ground.

[0044] The foregoing description has broadly detailed the features and technical advantages of the present invention to better facilitate a better understanding of the claims of the invention to be described below. Those skilled in the art will understand that the present invention may be implemented in other specific forms without altering its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. The scope of the present invention is defined by the claims set forth below rather than by the detailed description above, and all modifications or variations derived from the claims and their equivalents should be interpreted as being included within the scope of the present invention.

[0045] Although the present invention has been described in detail through specific embodiments, the present invention is not limited to the above embodiments, and various modifications can be made by those skilled in the art within the scope of the technical concept of the present invention. Explanation of the symbols

[0046] 10 : Fixed platform 20 : Footrest 30 : Height-adjustable stand 40 : Elastic transfer unit 41 : Mounting member 42 : Linear bushing 43 : Shaft 44 : Spring 45 : Wheel support 46: Conveyor wheel

Claims

Claim 1 A work platform with an automatic brake device that is easy to move via rotating wheels in normal circumstances, and does not move when a worker steps on it for work by engaging the brake, comprising: a fixed platform formed in the shape of a square plate to serve as a platform for the worker during work; a platform leg formed in the shape of a square column and connected to the lower corner of the fixed platform; a height-adjustable support coupled to the lower surface of the platform leg and supported on the ground, capable of height adjustment to allow the platform leg to ascend and descend; and an elastic transfer unit coupled to one side of the lower end of the platform leg to allow the worker to transfer the work platform and providing elastic force to the platform leg; wherein the elastic transfer unit is characterized in that when the work platform is pushed in a horizontal direction, the work platform is transferred on the ground, and when a predetermined load is applied to the fixed platform, the height-adjustable support touches the ground, preventing the work platform from being transferred on the ground. Claim 2 In claim 1, the elastic transfer unit is: A mounting member coupled to one side of the lower part of the above footrest; A linear bushing that is detachably fastened to one side of the above-mentioned mounting member and has a predetermined cylindrical hole formed therein to house a bearing inside; A shaft that is fastened to the cylindrical hole of the above linear bushing and capable of linear movement in a direction perpendicular to the ground through the above bearing; A spring positioned to wrap around the shaft and provide elastic force; A wheel support connected to the lower surface of the shaft and rotatable 360 ​​degrees in a direction horizontal to the ground; and An automatic brake device work platform characterized by including a conveying wheel connected to the wheel support above. Claim 3 An automatic brake device work platform, wherein, in claim 2, both sides of the mounting member are formed in a trapezoidal shape with a wider surface connected to the footrest leg side so as to distribute stress applied due to a load.

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