KR102188092B1 - Tilting gate device that opens and closes the open area of the work railing - Google Patents

Abstract

A tilting gate device for opening/closing an open area of a work guardrail according to the present invention comprises: a work guardrail installed on an end part of a working surface and including an open area; a tilting gate comprising a gate frame for opening/closing the open area of the work guardrail, base frames bent from end parts of the gate frame, and a pair of connection frames for connecting the gate frame and the side parts of each of the base frames, respectively; a pair of stands which are in contact with the connecting frames, respectively, in a state of standing on one corresponding side of the working surface; a hinge installed between the upper end of each of the stands and one side of each of the connection frames; a hydraulic cylinder connected to the stand and one side of the connection frames and rotating the tilting gate about the hinge through an expansion/contraction operation; and a controller for controlling the driving of the hydraulic cylinder. According to the tilting gate device for opening/closing the open area of the work guardrail according to the present invention, the tilting gate is automatically rotated in a hydraulic cylinder manner to provide convenience in work, and the work guardrail is opened or closed as necessary, thereby having an effect of ensuring the safety of a worker.

Description

Tilting gate device that opens and closes the open area of the work handrail {TILTING GATE DEVICE THAT OPENS AND CLOSES THE OPEN AREA OF THE WORK RAILING}

The present invention relates to a tilting gate device that opens and closes the open area of the work handrail, and more particularly, when moving cargo to a position under the work handrail, the open area of the work handrail is automatically opened and closed to improve the stability and convenience of the operator. It relates to a tilting gate device that can be secured at the same time.

Cargo storage space, such as a cargo storage area where cargo is temporarily stored or moved, may be structured to separate and store each cargo in a single-story state, but in this case, there are difficulties requiring a large work space, so the second floor In many cases, work spaces are formed at the same height as the third floor.

When moving a cargo from a low position to a high position or in the opposite direction in such a cargo loading space, the cargo is loaded on an elevating means such as a ladder vehicle or a lift to move the cargo.

At this time, a handrail is usually installed at a high position for the safety of workers.When this shelf moves cargo, it becomes a kind of barrier and can be followed by the ��� agent that impairs work efficiency.

In order to solve this problem, a separate device or means for opening and closing the railing installed at a high position during cargo work is required.

A cargo storage system equipped with a variable shelf, which is Korean Patent No. 1218827, and its storage method is a variable storage box provided with a variable shelf that combines or separates a plurality of variable storage boxes having an electrically open or locked door and the plurality of adjacent variable storage boxes. , A sensor monitoring unit that detects status information according to the opening or closing of the door and the variable shelf, and controls the overall operation of each unit, and the separation of the variable shelf based on the status information received when cargo is received or released. Alternatively, it is posted that there is an effect of easily storing large cargoes of various sizes, including a control unit that controls the coupling.

However, according to the above technology, a rack-type shelf must be separately prepared, as well as a sensor for detecting cargo on each shelf, as well as a door that is opened and closed by sensing of this sensor, which requires considerable installation and maintenance costs. Follows.

Therefore, it is necessary to develop a new and advanced shelf opening and closing means that can simultaneously guarantee the efficiency of work and the safety of workers by conveniently opening and closing shelves installed at high positions, especially when lifting or unloading cargo in a cargo loading space with a height difference. This is the rising situation.

The present invention has been conceived to overcome the problems of the above technology, and provides a tilting gate device including a tilting gate that automatically opens and closes an open area of a work handrail and forms a work space in which cargo can be stacked or moved. Its main purpose.

Another object of the present invention is to prevent a problem in which the tilting gate unnecessarily increases through the tilted frame extending obliquely to the tilting gate.

Another object of the present invention is to provide a means for adjusting the rotation speed of the tilting gate to suit the working environment.

A further object of the present invention is to provide a means for reducing unnecessary noise while ensuring the safety of workers when a part of the tilting gate touches the work surface.

In order to achieve the above object, a tilting gate device for opening and closing an open area of a work handrail according to the present invention comprises: a work handrail including an open area as installed at an end of a work surface; A tilting gate comprising a gate frame for opening and closing an open area of the work railing, a base frame bent at an end of the gate frame, and a pair of connection frames connecting the gate frame and the side portions of the base frame, respectively; A pair of stands in contact with each of the connecting frames while standing on one side of the working surface; A hinge installed between the upper end of the stand and one side of the connection frame; A hydraulic cylinder connected to one side of the stand and the connection frame and rotating the tilting gate around the hinge by an expansion/contraction action; And a controller for controlling the driving of the hydraulic cylinder.

The tilting gate may further include an inclined frame that obliquely connects ends of the gate frame and the base frame.

In addition, at one side of the stand, a speed measurement sensor for measuring a rotation speed of the tilting gate is included, and the controller includes a preset threshold speed and a rotation speed of the tilting gate measured by the speed measurement sensor. It characterized in that it comprises a; a basic correction module for correcting the expansion and contraction amount of the hydraulic cylinder.

According to the tilting gate device for opening and closing the open area of the work handrail according to the present invention,

1) The tilting gate is automatically rotated by a hydraulic cylinder method to provide convenience for work, and at the same time, the work rail is opened and closed as necessary to ensure the safety of the worker.

2) Due to the improved structure of the tilting gate, it is possible to operate the tilting gate reasonably without having to manufacture it in an unnecessarily large size.

3) Not only can the rotation speed of the tilting gate be corrected over the first or second order to be optimized for the working environment,

4) It has the effect of reducing unnecessary noise while enhancing stability by additionally securing the visibility of workers by the indicator block.

1 is a perspective view showing the overall structure of a tilting gate device of the present invention.
Figure 2 is a perspective view of Figure 1 from a different angle.
3 is a perspective view and a partial enlarged view showing a structure in which a stopper is installed on a support frame of a stand.
Figure 4 is a block diagram showing a state in which the controller of the present invention is linked with a hydraulic cylinder and a speed measurement sensor.
5 is a conceptual diagram illustrating a state in which an indicator block is formed on one side of a tilting gate.
6 is a cross-sectional view illustrating an elastic auxiliary layer stacked in a receiving groove of a tilting gate.
7 is a flow chart schematically showing a method of manufacturing a buffering aid comprising an additional composition.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings are not drawn to scale, and the same reference numerals in each drawing refer to the same elements.

1 is a perspective view showing the overall structure of the tilting gate device of the present invention, and FIG. 2 is a perspective view showing FIG. 1 from a different angle.

As can be seen from FIGS. 1 and 2, the tilting gate device of the present invention covers a part of the work railing 10 with a tilting gate and provides an opening and closing structure that can be opened when lowering or moving cargo. To do.

First, the work railing 10 is the end of the work surface 20 formed at a high place where it is necessary to lower the cargo, such as the first floor, especially the second floor and the third floor, like a known handrail (for example, the lower floor is lowered). It is installed to secure stability to prevent the fall of the cargo as well as workers at the visible end), and installed at a certain height along the extended direction of the work surface 20 at the end of the work surface 20 Has been.

At this time, the work surface 20 refers to the floor surface of a work space that performs cargo work such as transport/movement of cargo, and in Figs. 1 and 2, the work surface 20 is the floor on which the work handrail 10 is installed. It can be understood by referring to the bottom of.

In particular, the work railing 10 of the present invention has an open space for loading or unloading cargo from the work surface 20 located at a height of two or more floors to a lower floor, which is referred to as an open area 11.

That is, the open area 11 may be said to be an open space in which a part of the wall is opened in the work railing 10 that serves as a wall, thereby moving/transporting cargo.

However, if this open area 11 is always open, there is a risk that the operator may fall, so it is necessary to open the open area 11 only during cargo work and cover the open area 11 normally. For this purpose, the present invention includes a structure called a'tilting gate' (100).

As can be seen from FIGS. 1 and 2, the tilting gate 100 opens and closes the open area 11 of the work handrail 10 and provides a function of forming a cargo working space. unit bar) is a combination of a small unit frame, and a medium-sized unit frame called a frame is connected.

In other words, the gate frame 110 and the base frame 120 to be described later, as well as the connection frame 130 (and further, including an inclined frame), are a unit bar 101 that can be referred to as a plurality of basic materials (small unit frames). It can be understood as the name of a medium-sized unit frame made of a combination of.

Specifically, the tilting gate 100 is a three-dimensional structure composed of a gate frame 110, a base frame 120, and a connection frame 130.

The gate frame 110 is a combination of several unit bars 101 so as to have a width (width) that can cover the entire or partial width of the open area 11 while having the same or similar height as the work railing 10 As a structure (medium-sized unit frame), referring to FIGS. 1 and 2, a plurality of unit bars 101 primarily form a circumference, and then a unit extending in the height direction at a predetermined interval in the circumferential interior space. It can be seen that the bar 101 has a filled structure. Of course, the structure shown in FIGS. 1 and 2 is an example and may take various structures and shapes.

The base frame 120 is a structure having a shape similar to that of the gate frame 110 by being bent at the end of the gate frame 110 (the upper end when the gate frame 110 is erected to cover the work railing), FIG. 1, Referring to 2, it can be seen that a plurality of unit bars 101 are combined to have a shape similar to that of the gate frame 110 while being bent at an end of the gate frame 110 by 90 degrees.

In particular, in the gate frame 110 and the base frame 120, the unit bar 101 is not only wrapped around the perimeter, but a plurality of unit bars may be combined in a grid or matrix structure at a portion generated inside the perimeter, that is, a portion inside the perimeter. This is called a'wall zone' (111, 121).

These wall zones 111 and 121 can serve as a wall covering the open space while providing a grid structure like a mesh body, and thus, the gate frame 110 and the base frame 120 simply wrapped around Since it provides a more compact structure, it plays a role in preventing safety accidents such as a worker's fall between these open spaces.

In this way, the base frame 120 may be bent in a state in direct contact with the end of the gate frame 110, but as shown in FIGS. 1 and 2, the inclined frame 140 is bent obliquely at the end of the base frame 110. It is also possible to be bent.

For example, when the tilting gate 100 has a structure in which the gate frame 110 and the base frame 120 are directly connected while having a 90 degree angle, that is, a “a”-shaped structure, a stable rotation radius of the tilting gate 100 is In order for the gate frame 120 to open the open area 11 while ensuring, both the gate frame 110 and the base frame 120 must be much higher than the height of the work shelf 10. However, in this case, a problem in which the tilting gate 100 itself increases unnecessarily may cause inconvenience in operation.

Accordingly, in the present invention, the gate frame 110 and the base frame 120 are bent and connected to have a “L” structure, as shown in FIGS. 1 and 2, and the bent connection portion is chamfered. It is preferable to have a structure, but in the case of including such a chamfered structure, the rotation radius of the tilting gate 100 is reduced while opening and closing the open area 11 without having to make the gate frame 110 and the base frame 120 high. It provides an advantage that can be sufficiently secured.

In the present invention, a structure in which a bent portion is chamfered in a bent structure as described above is referred to as an inclined frame 140.

That is, the inclined frame 140 plays a role of obliquely connecting ends of the gate frame 110 and the base frame 120 facing each other, and thus, in order to secure rotation in the above-described "a" structure This provides a characteristic capable of ensuring structural stability of the tilting gate 100 itself while compensating for the increased disadvantage.

The connection frame 130 refers to a structure connecting both side portions (left and right portions) of the gate frame 110 and the base frame 120, respectively.

Specifically, referring to FIGS. 1 and 2, the connection frame 130 includes a left connection frame connecting one side of the left side of the gate frame 110 and the base frame 120, and the gate frame 110 and the base frame 120. It can be seen that it is made up of a right connection frame connecting one side of the right side.

In other words, the tilting gate 100 includes a pair of connection frames 130, and each connection frame 130 is between the gate frame 110 and the base frame 120, such as the inclined frame 140 It consists of one unit bar 101 that extends obliquely, or extends to each end of the gate frame 110 and the base frame 120 from this one unit bar 101 as shown in FIGS. 1 and 2. It is also possible to consist of a plurality of unit bar combinations including the additional unit bar 101.

In summary, the tilting gate 100 is the open area of the work railing 10 in a state in which the'b'-shaped structure or the bent portion of the'a'-shaped structure is chamfered depending on whether the inclined frame 140 is included. It may be made of a structure with a width covering all or part of (11).

In this case, the open area 11 may have the same or wider width as the tilting gate 100. In other words, when the tilting gate 100 covers the entire open area 11, the width of the tilting gate 100 is It is the same as the width of the open area 11, and when a part of the open area 11 is covered, 2 to 3 may be adjacent and arranged in a line along the width direction of the open area 11.

As described above, since the tilting gate 110 has a structure in which the gate frame 110 and the base frame 120 are bent, when the gate frame 110 covers the open area 10, the base frame 120 is As shown in the above, a floating state is taken on the upper part of the work surface 20 in a state extending in a direction parallel to the work surface 20. In this case, the gate frame 120 may be placed in an unstable state with a high probability that it will be tilted toward the work surface 20 by its own load. In order to solve this problem, the stand supporting one side of the tilting gate 100 (30) is erected on the working surface (20).

That is, the stand 30 is a pair of standing bodies standing on the working surface 20 in a state spaced apart by a width corresponding to the width of the tilting gate 100 so as to support each of the left and right portions of the tilting gate 100 As, a floor corresponding to the center position of a virtual line connecting the ends of the gate frame 110 and the base frame 120 to one point of the floor surface 20 that has entered a certain distance inward from the open area 11 At a specific point on the surface 20, it is erected to a height that can contact the connection frame 130 to support a portion corresponding to the center of gravity of the tilting gate 100.

In other words, the stand 30 is erected at each point of the left/right bottom surface 20 corresponding to the width of the tilting gate 100.

This stand 30 is the easiest structure and may be a rod, such as a post standing vertically on the bottom surface (20).

Further, as can be seen from FIGS. 1 and 2, the stand 30 includes a support rod 31 extending downward from one side of the connection frame (specifically, a hinge to be described later) to a predetermined length, as described above, A plurality of unit bars are combined at the lower end of the support bar 31 to have a certain area (or volume) and may be formed of a support frame 32 in contact with the bottom surface 20.

In this way, when the stand 30 is not made of only the support bar 31 but is made of a structure including the support frame 32, the stand 30 ensures the stability of the lower part and the stand according to various shapes of the support frame 32 Convenience to focus on cargo work by securing an independent work space with the tilting gate 100 while forming a kind of work path that is a part of the work space for performing cargo work between both sides of the tilting gate 100 It is possible to provide.

As can be seen from Figs. 1 to 2, the tilting gate device of the present invention secures rotation in the state in which the tilting gate 100 described above is supported by the stand 30, especially in an automatic system rather than a manual method. For this, it includes a hinge 150 and a hydraulic cylinder 160 and a controller 200.

The hinge 150 is installed between the upper end of the stand 30 and one side of the connection frame 130 (preferably in the middle of the connection frame for stability), the tilting gate 100 based on the stand 30 It provides a basis for meetings.

That is, the tilting gate 100 can be rotated while being suspended from the stand 30 around the hinge 150. More specifically, the base when the gate frame 100 is erected to cover the open area 11 The frame 120 is floating at a point spaced apart from the work surface 20 by a certain height, such as a roof, and when the tilting gate 100 rotates and the base frame 120 touches the work surface 20, the gate frame 120 This acts as a floating roof on the work surface 20, like the base frame 120 ³ ¼ described earlier.

In other words, the tilting gate 100 may open and close the open area 11 of the work handrail 10 in such a rotating manner and form a kind of independent cargo work space at the same time.

For example, the base frame 120 has a structure in which the base frame 120 floats like a roof while the gate frame 110 covers the open area 11 in normal times, so the stand 30, the gate frame 110 and the base frame Cargo can be stacked in the space enclosed by 120, and this space serves as a cargo work space such as a kind of cargo loading space or cargo moving space in which cargo can be stacked or placed.

In addition, the tilting gate 100 is rotated to move the cargo to the lower layer of the working surface 20 so that the gate frame 110 serves as a roof and the base frame 120 touches the working surface 20 in a standing state. The space surrounded by the face gate frame 110, the base frame 120, and the stand 30 may provide a role of securing a cargo work space as a space for moving cargo to the lower floor.

In this way, the tilting gate 100 secures rotation to open and close the open area 11 of the handrail 10, as well as providing a kind of attention and visibility to the operator by forming a cargo work space such as a cargo loading/moving space. Has the characteristics of

In particular, the present invention includes a hydraulic cylinder 160 and a controller 200 to rotate the tilting gate 100 in an automatic manner instead of manually.

The hydraulic cylinder 160 serves to expand and contract the rod of the cylinder by controlling the flow rate and hydraulic pressure of the fluid. The hydraulic cylinder 160 adjusts the amount of fluid to adjust the driving speed and drive range of the rod. A flow control valve for setting and a motor for controlling the opening and closing state of the flow control valve may be provided. Since the detailed structure of the hydraulic cylinder 160 is the same as a known hydraulic cylinder, a separate description will be omitted.

These hydraulic cylinders 160 are connected to the connection frame 130 located at one side of the stand 30 and the tilting gate 100, more preferably the side of the tilting gate 100, serving as a fixing and support, and a rod It plays a role of automatically rotating the tilting gate 100 around the hinge 150 by the stretching action of.

3 is a perspective view and a partial enlarged view showing a structure in which a stopper is installed on a support frame of a stand.

As described above, when the stand 30 is made of the support rod 31 and the support frame 32, the stopper 50 may be mounted horizontally on one side of the support frame 32.

The stopper 50 mitigates the impact generated by colliding with the working surface 20 when the tilting gate 100 rotates, as well as the impact generated when a part of the inclined frame 140 contacts the surface of the support frame 32. As to perform a function, the support frame 32 is provided at a portion on the side of the handrail 10 and at a portion on the opposite side of the handrail 10. In other words, it means that two stoppers 50 are installed based on one support frame 32.

Specifically, the stopper 50 is composed of a support 51 and a jig 52.

The support 51 is a structure that has an inclination angle corresponding to the inclination direction of the inclined frame 140 in a plate-like body, that is, a panel shape, and is mounted on the aforementioned portion of the support frame 32.

In addition, the jig 52 is a pair of protruding structures extending from each of the two side portions extending along the width direction at regular intervals from the surface of the support 51, and in particular, it does not protrude to one character and extends inside (in the direction facing each other). ) Is bent and extended to be rounded. In addition, the jig 52 is made of a flexible metal material and has a property of being bent or elastically flowing when the inclined frame 140 is drawn in and out.

When the tilting gate 100 rotates, the inclined frame 140 may contact the support frame 32, and the inclined frame 140 contacts the support frame 32 twice. The first is when the gate frame 110 is rotated to be close to the work railing 10, and the other is when the base frame 120 is rotated to be close to the work surface 20.

That is, the stopper 50 is installed at each contact position of the support frame 32 corresponding to the two contact points between the inclined frame 140 and the support frame 32.

Specifically, the support 51 is obliquely extended in accordance with the inclined direction of the inclined frame 140 to provide a basis for efficiently accommodating a portion of the inclined frame 140 (the inclined frame portion indicated in red in FIG. 3). And, the jig 52 generally provides a space for accommodating the inclined frame 140 in the form of a bar or rod, and is bent so as to be rounded inward, so that the inclined frame 140 is in the space between the jig 52 Sufficient rotational force generated during the rotation of the tilting gate 100 must have been transmitted while providing flexible resistance based on bendability while contacting when entering or withdrawing so that the inclined frame 140 accommodated in the space between the jig 52 does not easily come off. It provides a stable support function that can be separated only when the inclined frame 140 is separated.

According to this stopper 50, when the tilting gate 100 is rotated, the tilting gate 100 is rotated by first contacting the support frame 32 before directly contacting the work railing 10 or the work surface 20. / In addition to mitigating the impact caused by opening and closing, it is possible to minimize the impact applied to the support frame 32, so that the durability of various parts including the hydraulic cylinder 160 as well as the tilting gate 100 itself can be enhanced. to provide.

4 is a block diagram showing a state in which the controller of the present invention is linked with a hydraulic cylinder and a speed measurement sensor.

The controller 200 performs a function of controlling whether the rod is stretched or contracted, the length of expansion, or the speed of expansion through the driving of the hydraulic cylinder 160, that is, the driving control of the flow control valve and the motor. With reference, the control panel 201 in which several switches 202 are mounted may be provided to provide various control functions for the hydraulic cylinder 160 by manipulating the switch by an operator.

For example, the control panel 201 is equipped with an ON/OFF switch to control whether or not the hydraulic cylinder 160 is driven, and it is also possible to control the rod expansion/contraction speed of the hydraulic cylinder 160 by providing a speed control switch. As a result, while controlling the rod driving range of the hydraulic cylinder 160 through the rotation control switch, it is possible to adjust the rotation range of the tilting gate 100.

In summary, the gate device of the present invention secures the operator's stability by automatically opening and closing the open area 11 of the work rail 10 when moving the cargo from the work surface 20 to a lower position. By providing an independent cargo work space to the operator, convenience of work can be ensured, and the rotational state of the tilting gate 100 can be observed with the naked eye even at a distant location to nearby workers, providing more convenient attention and visibility. Have characteristics.

Additionally, a speed measurement sensor 203 may be mounted on one side of the stand 30.

The speed measurement sensor 203 performs a function of measuring the speed at which the rod of the hydraulic cylinder 160 moves, more specifically, the rotation speed at which the tilting gate 100 rotates. That is, the speed measurement sensor 203 is installed in the vicinity of the hydraulic cylinder 160 or on the stand 30 at the periphery of the connecting frame 130, which is an external configuration of the tilting gate 100, to control the rotation speed of the tilting gate 100. Measure.

In response to this, the controller 200 may include a basic correction module 210. In this case, the controller 200 may include a function of storing a critical rotation speed of the tilting gate 100 preset by an operator.

As such, the preset critical rotation speed may be variously set/input/stored by the operator according to the size and weight of the tilting gate 100, the type of hydraulic cylinder, and the hydraulic range. That is, this critical rotation speed is a speed in which the rotation speed of the tilting gate 100 is theoretically set according to the size or weight of the tilting gate 100, and the base frame 120 of the tilting gate 100 is at the bottom surface 20 ), it has a range of speed values within the range where unnecessary impacts do not occur at a high rotational speed.

When the critical rotation speed and the rotation speed of the tilting gate 100 measured by the above-described speed measurement sensor 203 are different, the basic correction module 210 adjusts the hydraulic cylinder 160, specifically the speed at which the rod is extended or contracted. As a result, a function of adjusting the rotation speed of the tilting gate 100 is performed.

That is, the critical rotational speed is a theoretical speed, and thus an error may occur due to the difference in the flow control range as well as the weight of the hydraulic cylinder 160, in particular, the weight of the rod or the type of fluid applied to the hydraulic cylinder 160. The gate frame 110 covers the open area 11 or the base frame 120 works by adjusting the expansion and contraction speed of the hydraulic cylinder 160 more precisely and accurately by compensating the expansion and contraction speed at which the 160 is actually expanded and contracted. It is processed to reduce the impact and noise generated when it touches the surface (20).

At this time, the basic correction module 210 is a look-up table empirically organized by learning predetermined flow control information according to the difference value between the actual rotation speed of the tilting gate 100 and the theoretically set critical rotation speed. It is possible to correct the expansion and contraction speed of the hydraulic cylinder 160 by referring to the flow control information by this database including a database such as.

5 is a conceptual diagram showing a state in which an indicator block is formed on one side of a tilting gate.

Further, referring to FIG. 5, it can be seen that the indicator block 40 is provided at a specific point where the base frame 120 contacts the floor surface 20.

The indicator block 40 further secures the stability of the operator located around the tilting gate 100 and prevents damage to the base frame 120 while the base frame 120 touches the floor surface 20 to prevent unnecessary impact and It can be said to be a structure to more reliably prevent noise from being generated.

In other words, if the tilting gate 100 is rotated due to the operator's carelessness, a safety accident that injures the head may occur when the operator is positioned around this bar, and the indicator block 40 is provided with the tilting gate 100 to the operator in advance. It provides a function to strengthen attention by making it intuitive and easy to check the position of rotation.

In order to enhance visibility, the indicator block 40 has a structure that protrudes from the bottom surface 20 by extending a certain length along the width direction of the base frame 120 in a colored state such as yellow.

These indicator blocks 40 may be fixed to the floor surface 20 at all times, but there is a possibility that there is a possibility that the problem of the mounting distance may occur. Therefore, the indicator block 40 is detached so that it is located only at the time of the operation when the tilting gate 100 is rotated. It takes a structure that can be seated on the floor surface 20 as possible.

At this time, the indicator block 40 may have a structure that can be raised and lowered while being buried in the bottom surface 20, in other words, it is buried in the floor surface 20 at normal times and interlocked with the above-described controller 200 It is also possible to be made of an advanced structure in conjunction with the floor surface 20 so that it can rise from the floor surface 20 during cargo operation.

On the upper surface of the indicator block 40, a receiving groove 41 having a size that can accommodate the end of the base frame 120 made of a bar-shaped unit bar extends indentation for a predetermined length along the width direction of the base frame 120 Has been.

That is, when the end of the base frame 120 comes into contact with the indicator block 40, a repulsive force is generated, and the entire tilting gate 100 may be shaken or unnecessary noise may be added according to the repulsion, so the upper surface of the indicator block 40 By forming the receiving groove 41 in the receiving groove 41 and receiving the end of the base frame 120 in the receiving groove 41, the indicator block 40 and the indicator block 40 stably without repulsion and noise while reducing the amount of impact of the base frame 120 You can provide a guide role that you can touch.

In addition, it is possible that the sub-speed measurement sensor 204 is mounted in the periphery of the receiving groove 41 (for example, an entrance or introduction portion of the receiving groove).

The sub speed measurement sensor 204 performs a function of measuring the rotation speed of the tilting gate 100, that is, the'insertion rotation speed' at the time when the base frame 120 enters the accommodation groove 41.

In response to this, the controller 200 additionally corrects the expansion and contraction speed of the hydraulic cylinder 160 when the preset critical speed and the insertion rotation speed of the tilting gate 100 measured by the sub speed measurement sensor 204 are different. It may include a correction module 220. In this case, the critical speed may be preset to be equal to or different from the above-described critical rotation speed, and may be stored in a storage means of the controller 200.

That is, in the present invention, the expansion and contraction speed of the hydraulic cylinder 160 is in two stages, that is, the first moving speed before entering the receiving groove 41 and the second moving speed inserted in contact with the receiving groove 41. In the first moving speed step, the expansion and contraction speed of the hydraulic cylinder 160 is first corrected by the above-described basic correction module 210, and in the second moving speed step, the additional correction module 220 is applied. It is to provide a function of secondary correction of the expansion and contraction speed of the hydraulic cylinder 160, which is first corrected by the.

In other words, the expansion and contraction speed of the hydraulic cylinder 160 at the time of entering the receiving groove 41 by the friction force generated when the base frame 120 contacts the receiving groove 41 is the base frame 120 Since it is expected to be sufficiently lower than the speed when not in contact with (41), the expansion and contraction speed of the hydraulic cylinder 160 adjusted in the basic correction module 210 is not applied as it is at the time when it actually contacts the receiving groove (41). It is to adjust the insertion and rotation speed of the final hydraulic cylinder 160 by additionally reflecting the actual speed of the hydraulic cylinder 160 changed while entering by contacting the receiving groove 41.

Thus, as well as providing an impact prevention function by the indicator block 40, when the base frame 120 does not enter the receiving groove 41, as well as when the rotation speed at the time of entry is measured, each of the set critical speed/ By controlling the expansion and contraction speed of the hydraulic cylinder 160 twice in a manner that is compared with the critical rotation speed, as a result, it provides a basis for more precisely adjusting the rotation speed of the tilting gate 10 according to the actual situation.

The above-described indicator block 40 is preferably made of an elastic material such as rubber in order to mitigate the impact generated when it comes into contact with the base frame 120. In particular, in the receiving groove 41 where the impact is concentrated in a narrow space, It is necessary to reinforce its own durability while concentrating on the shock mitigation function.

To this end, the elastic auxiliary layer 42 may be stacked on the surface of the receiving groove 41 while having a predetermined thickness.

6 is a cross-sectional view illustrating an elastic auxiliary layer stacked in a receiving groove of a tilting gate.

The elastic auxiliary layer 42 may be prepared by mixing a cushioning auxiliary material including a melamine resin and azodicarbonamide with this thermoplastic polyurethane in a state containing a thermoplastic polyurethane (TPU) as a base. have.

Thermoplastic polyurethane (TPU), as well known, is not only durable and has excellent elasticity, but also has a shock absorbing function and is widely applied as a structural material that replaces rubber such as cell phone cases, cushioning mattresses, and fire hoses. That is, the elastic auxiliary layer 42 can be applied as a main component for providing elasticity.

The cushioning aid is to assist the elasticity of thermoplastic polyurethane (TPU), and includes melamine resin and azodicarbonamide.

Melamine resin is a resin obtained by reacting melamine and formaldehyde, and has a characteristic of forming fine pores when foamed. When the foamed melamine resin is included in the elastic auxiliary layer 42 to have a particle diameter of 0.1 to 1 mm, thermoplastic poly It is compressed more easily than urethane, so that the impact applied to the elastic auxiliary layer 42 is absorbed by the melamine resin, thereby providing a function of assisting the shock absorption of the thermoplastic polyurethane.

Azodicarbonamide is a substance in which two CONH ₂ groups are connected with an azo group, a double bond of nitrogen and nitrogen, and plays a role in promoting the formation of micropores in the melamine resin as nitrogen is removed from the amide group.

In addition, the azo group of the azodicarbonamide is a yellow chromophore, and it is possible to add color to the elastic auxiliary layer 42, thereby helping to increase the visibility of the elastic auxiliary layer 42 and further, the indicator block 40. .

The above-described elastic auxiliary layer 42 may include a thermoplastic polyurethane and a buffering aid in various composition ratios, for example, it is possible to be made of a composition ratio such as 75 to 90 parts by weight of a thermoplastic polyurethane and 10 to 25 parts by weight of a buffering aid. Do.

In addition, the elastic auxiliary layer 42 is manufactured by melting a thermoplastic polyurethane at 180 to 230°C, mixing a buffering auxiliary material, and cooling it in a molding mold, or buffering together with polyol and isocyanate when a thermoplastic polyurethane is manufactured. It is possible to manufacture by mixing auxiliary materials and then cutting and injection molding.

In summary, the elastic auxiliary layer 42 of the present invention absorbs the impact applied to the indicator block 40 when the tilting gate 100 rotates and falls on the indicator block 40 so that the tilting gate 100 is repelled. It performs a function of preventing the occurrence of problems or generating unnecessary noise.

Furthermore, in addition to the melamine resin and azodicarbonamide, in addition to the melamine resin and azodicarbonamide, an additional composition and a manufacturing method including the same may be provided in the buffer aid in order to enhance the function of supporting the elasticity of the thermoplastic polyurethane mentioned above.

7 is a flow chart showing a method of manufacturing a buffering aid comprising an additional composition.

As can be seen from FIG. 7, the buffering auxiliary material including the additional composition may be prepared through a first material preparation step, a second material preparation step, a third material preparation step, and a filtrate obtaining step.

First, the step of preparing the primary material is a process of preparing a primary material by mixing 85 to 95 parts by weight of isopropyl alcohol and 5 to 15 parts by weight of melamine resin at 150 to 200°C for 1 to 3 hours.

At this time, isopropyl alcohol is a solvent having excellent solubility in the carbon-oxygen portion of the melamine resin. That is, in the process of mixing for 1 to 3 hours at 150 to 200°C by the first material manufacturing step, an excess of isopropyl alcohol is evaporated to prepare a gel-like first material containing melamine resin as a main component.

Next, the second material manufacturing step is a process of preparing a secondary material by mixing 90 to 95 parts by weight of the primary material and 5 to 10 parts by weight of azodicarbonamide at 150 to 200°C for 30 to 60 minutes.

Here, if more than 10 parts by weight of azodicarbonamide is mixed, the size of the pores of the melamine resin becomes excessively large, so that it may be difficult for the melamine resin to support the impact, and if it is mixed lower than 5 parts by weight, fewer pores are formed in the melamine resin. Since shock absorption through compression may not occur well, it is preferable to mix the above-described parts by weight.

In addition, above 200°C, the azo group of azodicarbonamide may be decomposed and color may not develop, and below 150°C, the primary material does not flow well and mixing is difficult, so mixing at 150 to 200°C is appropriate.

Subsequently, in the step of preparing the tertiary material, 80 to 95 parts by weight of the secondary material, dibutylmethyl phenol and 5 to 20 parts by weight are mixed at 100 to 150°C at 500 to 2000 rpm for 1 to 2 hours. It is the process of manufacturing.

Here, dibutylmethylphenol is an antioxidant having a property of accepting radicals, and it is possible to eliminate the possibility that the elasticity of the elastic auxiliary layer 42 is lowered by causing the radicals to cause a curing reaction. Can be prevented.

Finally, in the step of obtaining the filtrate, 20 to 30 parts by weight of the tertiary material and 70 to 80 parts by weight of acetone are mixed at 2000 to 3000 rpm for 10 to 30 minutes, and then the filtered filtrate, a buffer aid, is obtained. Here, acetone is a solvent for dispersing a tertiary substance.

Since the filtrate obtaining step is mixed at 2000 to 3000 rpm, a buffering aid having various particle sizes can be obtained, and it is produced in a fine particle size by filtration through a filtration membrane of 0.1 to 1 mm, which is the particle size of the melamine resin described above, to absorb impact. It is possible to remove the poor buffering aid that is difficult to implement the function.

The cushioning auxiliary material manufactured through this process provides a basis for further increasing the elasticity of the above-described thermoplastic polyurethane and the shock absorption function of the elastic auxiliary layer 42 based thereon.

Additionally, a durability enhancer may be included in the above-described tertiary material.

The durability enhancer retains adhesiveness, and provides a function of strengthening the adhesion between the thermoplastic polyurethane in the mixed state and the cushioning aid so that the impacted thermoplastic polyurethane and the cushioning aid are not easily separated.

In addition, the durability enhancer may include polybutylacrylate and triethoxy vinylsilane.

The third material manufacturing step including such a durability enhancer includes 80 to 85 parts by weight of a secondary material, 5 to 10 parts by weight of dibutylmethylphenol, 5 to 10 parts by weight of a durability enhancer, 1 to 2 at 1000 to 2000 rpm at 100 to 150°C. It may be a process of preparing a tertiary material by mixing for an hour.

Here, polybutyl acrylate is an acrylic polymer having adhesive properties, and specifically, it includes a number of bent portions in the chain structure of the polymer, and may enhance the adhesion between the thermoplastic polyurethane and the cushioning aid by mechanical engagement by surface irregularities.

Triethoxyvinylsilane is a material in which three carbon-oxygen-ethyl groups are bonded to silicon, and can enhance the electrostatic adhesion between the thermoplastic polyurethane and the buffering aid by attracting electrostatic force by the lone pair of oxygen. Here, the electrostatic attraction means that when materials having different band gaps come into contact with each other, the Fermi level is adjusted by the movement of electrons, thereby forming a reversible bonding state.

The durability aid including polybutyl acrylate and triethoxysilane may be prepared through a first solution preparation step, a second solution preparation step, and a temperature reduction step.

First, the first solution preparation step is to prepare a first solution by mixing 20 to 30 parts by weight of polybutyl acrylate and 70 to 80 parts by weight of methoxy butyl acetate at 200 to 250°C for 30 to 60 minutes. It's a process.

Methoxybutyl acetate is an organic solvent that has good compatibility with polybutyl acrylate and can be dispersed in the first solution. It has a boiling point of 271°C as an organic solvent, and it can be mixed with polybutyl acrylate at high temperature. 1 It is possible to shorten the mixing time of the solution preparation step. In addition, methoxybutyl acetate has a high boiling point, but volatilization occurs rapidly, and thus may be removed in a temperature reduction step to be described later.

Next, in the second solution preparation step, 75 to 85 parts by weight of the first solution, 5 to 10 parts by weight of methyl aziridine, and 1 to 5 parts by weight of aluminum hydroxide are mixed at 100 to 150° C. for 10 to 30 minutes. 2 This is the process of preparing a solution.

Here, methylaziridine is a material containing an oxygen-carbon ring structure similar to an epoxide, and two carbon cations are formed by the nucleophilic opening of the oxygen-carbon ring structure at 100°C or higher. Other materials, i.e. thermoplastic polyurethanes and cushioning aids, can assist in strengthening the connection relationship.

Aluminum hydroxide is a substance in which a hydroxyl group is bonded to aluminum, and when a thermoplastic polyurethane and a buffering aid are mixed by methylaziridine, some hydrogen ions may be generated at the molecular terminal of the melamine resin. This hydrogen ion is captured by a hydroxyl group and replaced with water. I can make it. Since such hydrogen ions may have high reactivity, the bending portion of the above-described polybutyl acrylate may be modified to enhance the blendability of the thermoplastic polyurethane and the buffering aid.

Finally, in the step of reducing the temperature, 90 to 95 parts by weight of the second solution and 5 to 10 parts by weight of triethoxy vinylsilane are mixed at 100 to 150°C for 30 to 60 minutes, and then 20 to 50°C for 3 to 5 hours. It is a process of reducing the temperature during the process to complete the durability enhancer. At this time, triethoxyvinylsilane is a material capable of enhancing the electrostatic adhesion between the thermoplastic polyurethane and the buffering aid as described above.

In this temperature reduction step, when the temperature is higher than 150°C when the second solution and triethoxyvinylsilane are mixed, the ethoxy group, which is the oxygen site of the triethoxyvinylsilane, may be decomposed. It is preferably set in the temperature range.

In addition, as mentioned above, the methoxybutyl acetate mixed in the first solution preparation step is evaporated through the temperature reduction step, thereby providing a characteristic capable of securing the viscosity of the durability enhancer at a certain level. As such, when the durability enhancer has a certain viscosity, it provides the advantage of retaining the aforementioned adhesive force for a longer time.

In summary, the durability enhancer plays a role of enhancing the durability of the elastic auxiliary layer 42 by reinforcing the adhesive state between the thermoplastic polyurethane and the cushioning auxiliary material.

As described so far, the configuration and operation of the tilting gate device for opening and closing the open area of the working handrail according to the present invention is expressed in the above description and drawings, but this is only an example, and the spirit of the present invention is described above. It is not limited to, of course, various changes and changes are possible within the scope of the technical spirit of the present invention.

10: work railing 11: open area
20: work surface 30: stand
31: support bar 32: support frame
40: indicator block 41: receiving groove
42: elastic auxiliary layer 50: stopper
51: support 52: jig
100: tilting gate
101: unit bar 110: gate frame
111: wall zone 120: base frame
121: wall zone 130: connection frame
140: inclined frame 150: hinge
160: hydraulic cylinder 200: controller
201: control panel 202: switch
203: speed measurement sensor 204: sub speed measurement sensor
210: basic correction module 220: additional correction module
S110: primary material manufacturing step S120: secondary material manufacturing step
S130: tertiary material preparation step S140: filtrate obtaining step

Claims (9)

As a tilting gate device that opens and closes the open area of the work handrail,
It is installed at the end of the work surface, the work rail including an open area;
A tilting gate comprising a gate frame for opening and closing an open area of the work railing, a base frame bent at an end of the gate frame, and a pair of connection frames connecting the gate frame and the side portions of the base frame, respectively;
A pair of stands in contact with each of the connecting frames while standing on one side of the working surface;
A hinge installed between the upper end of the stand and one side of the connection frame;
A hydraulic cylinder connected to one side of the stand and the connection frame and rotating the tilting gate around the hinge through an expansion and contraction action;
And a controller that controls the driving of the hydraulic cylinder. The method of claim 1,
The tilting gate,
The tilting gate device, characterized in that it further comprises an inclined frame obliquely connecting the ends of the gate frame and the base frame. The method of claim 2,
The stand above,
A support rod in contact with the hinge,
A tilting gate device, characterized in that a plurality of unit bars are combined at a lower end of the support bar to have a predetermined area and comprise a support frame in contact with the bottom surface. The method of claim 3,
In the support frame, each of the work railing and the opposite side of the work railing,
A stopper having a panel shape having an inclination angle corresponding to the inclined direction of the inclined frame and including a support attached to one side of the support frame and a jig bent and extended to accommodate the inclined frame on both sides of the surface of the support frame; It characterized in that the tilting gate device. The method of claim 1,
On one side of the stand,
Including a speed measurement sensor for measuring the rotation speed of the tilting gate,
The controller,
And a basic correction module for correcting the expansion/contraction speed of the hydraulic cylinder when the rotation speed of the tilting gate measured by the speed measurement sensor is different from a preset critical rotation speed. The method of claim 5,
In one portion of the bottom surface to which the base frame touches,
A receiving groove recessed to accommodate an end of the base frame in a state extending in the width direction of the base frame, and the tilting gate formed around the receiving groove at a time when the base frame enters the receiving groove An indicator block including a sub speed measurement sensor that measures the insertion rotation speed of
The controller,
And an additional correction module for additionally correcting the expansion/contraction speed of the hydraulic cylinder when a predetermined critical speed and the insertion rotation speed of the tilting gate measured by the sub-speed measurement sensor are different from each other. The method of claim 6,
On the surface of the receiving groove,
Thermoplastic polyurethane (TPU),
A tilting gate device, characterized in that an elastic auxiliary layer manufactured by mixing a cushioning auxiliary material including melamine resin and azodicarbonamide is laminated. The method of claim 7,
The buffer aid,
Preparing a primary material by mixing 85 to 95 parts by weight of isopropyl alcohol and 5 to 15 parts by weight of melamine resin at 150 to 200°C for 1 to 3 hours;
Preparing a secondary material by mixing 90 to 95 parts by weight of the primary substance and 5 to 10 parts by weight of azodicarbonamide at 150 to 200°C for 30 to 60 minutes;
Mixing 80 to 95 parts by weight of the secondary material, dibutylmethyl phenol and 5 to 20 parts by weight at 100 to 150°C at 1000 to 2000 rpm for 1 to 2 hours to prepare a tertiary material;
Characterized in that produced through the step of obtaining a filtrate, obtained by mixing 20 to 30 parts by weight of the tertiary material and 70 to 80 parts by weight of acetone at 2000 to 3000 rpm for 10 to 30 minutes and then filtering to obtain a filtrate, Tilting gate device. The method of claim 8,
The tertiary material,
Further comprising a durability enhancer including polybutylacrylate and triethoxy vinylsilane,
The durability enhancer,
Preparing a first solution by mixing 20 to 30 parts by weight of polybutyl acrylate and 70 to 80 parts by weight of methoxy butyl acetate at 200 to 250°C for 30 to 60 minutes;
Preparing a second solution by mixing 75 to 85 parts by weight of the first solution, 5 to 10 parts by weight of methylaziridine, and 1 to 5 parts by weight of aluminum hydroxide at 100 to 150°C for 10 to 30 minutes;
90 to 95 parts by weight of the second solution and 5 to 10 parts by weight of triethoxy vinylsilane are mixed at 100 to 150°C for 30 to 60 minutes and then reduced to 20 to 50°C for 3 to 5 hours. A tilting gate device, characterized in that it is manufactured through steps.

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