KR101010198B1 - One body type buffering apparatus of end wall with function of adjusting amount of flowing automatically in the flat rack container - Google Patents

Abstract

The folding automatic flow rate control integrated shock absorber of the end wall of the flat rack container according to the present invention is one end hinged to the fixing bracket of the base, the inside of the cylinder housing is formed with a space for accommodating oil; Located in the space portion, the space portion is divided into a first space portion and a second space portion, is installed so as to be movable in the longitudinal direction of the cylinder housing, a fastening hole is formed in the center, the outer portion of the first along the circumferential direction A slider having an oil flow path formed therein, and at the outermost side thereof a second oil flow path having a relatively lower flow rate than the first oil flow path; A cylinder rod, one end of which is connected to a fixed arm of the pivot of the end wall and the other end of which is inserted into the space portion; A pressure plate having a size of a diameter capable of blocking the first oil flow path and blocking the first oil flow path when the end wall is folded; A stopper penetrating the fastening hole of the slider and fixed to an end of the cylinder rod to limit the movement of the slider; And a cylinder housing cap fastened to an end of the cylinder housing to seal the space portion of the cylinder housing.

Flat rack containers, endwalls, sliders, press plates, and stoppers

Description

One body type buffering apparatus of end wall with function of adjusting amount of flowing automatically in the flat rack container}

The present invention relates to a flat rack container, and more particularly, is installed between the end wall and the base, and prevents breakage of the base and the end wall by absorbing shock while automatically adjusting the flow rate when the end wall is folded. The present invention relates to a folding automatic flow control integrated shock absorber of an end wall of a flat track container capable of ensuring worker safety.

Generally, a container is a device used for the convenience of freight transportation. The standard is set to 20 feet, 40 feet, 45 feet by the International Organization for Standardization (ISO).

Types of such containers include a dry container, a refrigerated container, an open top container, and a flat rack container.

Among them, the flat rack container has no ceiling and side walls, and is configured to easily unload heavy cargo such as passenger cars or machinery to the side.

1 is a perspective view showing a conventional flat rack container.

As shown in FIG. 1, the conventional flat rack container 10 includes a base 11 on which cargo is loaded and an end wall 13 rotatably positioned on both sides of the base 11.

The end wall 13 is pivoted (or hinged) 14 to the base 11 and is configured to be folded or unfolded while pivoting about the pivot 14.

A counter balancing spring 15 is installed below the end wall 13 to elastically support the rotation of the end wall 13.

One side of the end wall 13 is provided with a first rocker 16 for maintaining an unfolded state, and the other side of the end wall 13 has a second rocker 17 for maintaining a folded state. Is installed.

In the conventional flat rack container 10 configured as described above, when the flat rack container is used, the end wall 13 is kept in an unfolding state (vertical standing state: indicated by a solid line), and the first locker 16 is locked. To fix the position of the end wall 13.

Conversely, when not using or transporting the flat rack container, the end wall 13 is kept in a folded state (horizontally laid down: represented by a phantom line), and the second rocker 17 is locked to the end wall 13. Fix the position of (13).

In general, since the load of the end wall 13 is very large, such as 400-450 kg, when the end wall 13 is folded, the end wall 13 is rotated so that the end wall 13 rotates slowly about the pivot 14. The counter balancing spring 15 elastically grasps the end wall 13 to cushion the shock so that the end wall 13 is slowly seated on the base 11 without impact.

However, in the conventional flat rack container, the end wall tends to be lifted upward by the counter balancing spring, which causes an accident in which the end wall is lifted by a road impact or wind during the vehicle transportation process and receives an pier, To solve this problem, a weak spring with a tensile force below the counterbalance role was used to suppress the tendency of the end wall to lift. However, in this case, when the end wall is folded, the force holding the end wall is so weak that the end wall has a strong impact on the base, which shortens the service life of the flat container. In addition, there was a problem that can not guarantee the safety of the worker because of the accident of large and small workers in the folding impact.

Recently, a technique using a hydraulic hydraulic cylinder instead of the counter balancing spring has been proposed, but this technique requires a separate electric installation because it operates a motor by supplying electricity and operates the hydraulic hydraulic cylinder using the power of the motor. Since the work is very cumbersome, there is a problem that the manufacturing cost of the flat rack container rises.

The present invention has been proposed to solve the above problems, by adjusting the drop speed of the end wall using an automatic flow control integrated hydraulic cylinder structure, absorbing the shock to prevent damage to the base and end wall as well as folding It is to provide a folding automatic flow control integrated shock absorber in the end wall of the flat rack container, which is very easy to work and ensures the safety of the worker and reduces the manufacturing cost of the flat rack container.

The present invention provides a flat rack container to achieve the above object.

The flat rack container has a base on which the cargo is loaded; An end wall pivotally coupled to both sides of the base; And a folding automatic flow rate control integrated shock absorber installed between the base and the end wall to cushion the end wall when the end wall is folded.

The folding automatic flow control integrated shock absorber has one end hinged to the fixing bracket of the base and the other end thereof to a fixed arm fixed to the pivot of the end wall.

In addition, the present invention provides a folding automatic flow control integrated shock absorber of the end wall of the flat rack container to achieve the above object.

In the folding automatic flow control integrated shock absorber of the end wall of the flat rack container according to an aspect of the present invention, one end is hingedly coupled to the fixing bracket of the base, and the cylinder housing is formed in the space is accommodated therein ; Located in the space portion, the space portion is divided into a first space portion and a second space portion, is installed so as to be movable in the longitudinal direction of the cylinder housing, a fastening hole is formed in the center, the outer portion of the first along the circumferential direction A slider having an oil flow path formed therein, and at the outermost side thereof a second oil flow path having a relatively lower flow rate than the first oil flow path; A cylinder rod, one end of which is connected to a fixed arm of the pivot of the end wall and the other end of which is inserted into the space portion; A pressure plate having a size of a diameter capable of blocking the first oil flow path and blocking the first oil flow path when the end wall is folded; A stopper penetrating the fastening hole of the slider and fixed to an end of the cylinder rod to limit the movement of the slider; And a cylinder housing cap fastened to an end of the cylinder housing to seal the space portion of the cylinder housing, wherein the pressure plate blocks the first oil flow path when the end wall is folded. Oil in the space portion flows into the second space portion through the second oil flow path, and during unfolding of the end wall, the pressure plate opens the first oil flow path so that the oil in the second space portion is formed in the first oil flow passage. It is characterized by flowing into the first space portion through the one oil flow path.

The second oil flow path is located farther from the fastening hole of the slider than the first oil flow path.

The diameter of the first oil flow path may be formed relatively larger than the diameter of the second oil flow path.

O-rings may be provided on the outer circumferential surface of the slider.

The cylinder rod, the pressure plate, and the stopper are integrally formed, the slider is divided into two bodies, and both ends of the body may have coupling grooves and coupling protrusions, respectively.

According to another aspect of the present invention, there is provided a folding automatic flow control integrated shock absorber of an end wall of a flat rack container, the cylinder housing having one end hinged to a fixing bracket of a base, and having a space for receiving oil therein; Located in the space portion, the space portion is divided into a first space portion and a second space portion, is installed so as to be movable in the longitudinal direction of the cylinder housing, a fastening hole is formed in the center, the outer portion of the first along the circumferential direction A slider in which an oil passage is formed; A cylinder rod, one end of which is connected to a fixed arm of the pivot of the end wall and the other end of which is inserted into the space portion; A pressure plate having a size of a diameter capable of blocking the first oil flow path and blocking the first oil flow path when the end wall is folded; A bypass tube installed outside the cylinder housing to connect the first space portion and the second space portion, the second oil passage having a relatively lower oil flow rate than the first oil passage; A stopper penetrating the fastening hole of the slider and fixed to an end of the cylinder rod to limit the movement of the slider; And a cylinder housing cap fastened to an end of the cylinder housing to seal the space portion of the cylinder housing, wherein the pressure plate blocks the first oil flow path when the end wall is folded. The oil in the space portion flows into the second space portion through the second oil flow path of the bypass pipe, and during unfolding of the end wall, the pressure plate opens the first oil flow path to remove the oil in the second space portion. Oil flows into the first space through the first oil passage.

A flow control valve is connected to the bypass pipe, and the flow control valve may be exposed to the outside of the base.

According to another aspect of the present invention, there is provided a folding automatic flow control integrated shock absorber of an end wall of a flat rack container, the cylinder housing having one end hinged to a fixing bracket of a base and having a space for accommodating oil therein; Located in the space portion, the space portion is divided into a first space portion and a second space portion, is installed so as to be movable in the longitudinal direction of the cylinder housing, the fastening hole is formed in the center, the oil flow path along the circumferential direction The slider is formed; A cylinder rod having one end connected to a fixed arm of the pivot of the end wall and the other end inserted into the space part and fixed to the slider; An oil flow path blocking film rotatably installed around the hinge on the front of the slider to selectively block the oil flow path to control oil flow rate; A torsion spring installed at a hinge of the oil channel blocking membrane to provide an elastic force to the oil channel blocking membrane; A stopper penetrating the fastening hole of the slider and fixed to an end of the cylinder rod to limit the movement of the slider; And a cylinder housing cap fastened to an end of the cylinder housing to seal the space portion of the cylinder housing, wherein the oil blocking film blocks a part of the oil flow path when the end wall is folded. Oil in the space portion flows into the second space portion through the opening of the oil flow path, and during unfolding of the end wall, the oil barrier film opens the entire oil flow path so that the oil in the second space portion is the oil. It flows into the first space part through a flow path.

As described above, according to the present invention, by adopting a folding automatic flow control integrated hydraulic cylinder structure to adjust the drop speed of the end wall, it is possible to absorb the shock and effectively prevent damage to the end wall and the base.

In addition, by adjusting the drop speed of the end wall to absorb the impact it is possible to prevent in advance the safety accident of the operator that may occur due to the descent of the end wall.

In addition, the folding automatic flow rate control integrated shock absorber of the present invention is simple in its entire configuration and easy to operate, and unlike the existing counter balancing spring type that is installed on the outside, it is installed inside the base so that it is not exposed to the outside. Can be effectively protected from

Hereinafter, with reference to the accompanying drawings will be described a folding automatic flow control integrated shock absorber of the flat track container and its end wall according to an embodiment of the present invention.

Figure 2 is a perspective view showing a flat rack container according to the present invention, Figure 3 is a view for explaining the folding of the end wall of Figure 2, Figure 4 is an end wall of the flat rack container according to the first embodiment of the present invention Figure 5 is an exploded perspective view showing a folding automatic flow control integrated shock absorber of Figure 4, Figure 5 is a perspective view of the combination of Figure 4, Figure 6 is a cross-sectional view illustrating the hydraulic action when folding the end wall of Figure 4, and Figure 7 Sectional view explaining hydraulic action during unfolding.

2 to 7, a flat rack container 20 according to the present invention includes a base 11 on which cargo is loaded; An end wall 13 pivotally coupled to both sides of the base 11; And a folding automatic flow control integrated shock absorber 100 installed between the base 11 and the end wall 13 to cushion the impact of the end wall 13 when the end wall 13 is folded. Equipped.

The folding automatic flow control integrated shock absorber 100 does not use power and is configured to operate by the weight of the end wall 13 when the end wall 13 is folded.

The folding automatic flow rate control integrated shock absorber 100 of the end wall of the flat rack container according to the first embodiment of the present invention is hinged 101 is coupled to the fixing bracket 22 of the base 11, the inside The cylinder housing 110 is formed with a space portion 111 for receiving oil; Located in the space 111, the space 111 is divided into a first space 111a and a second space 111b, and is installed to be movable in the longitudinal direction of the cylinder housing 110 , A fastening hole 121 is formed in a center, and a first oil flow path 123 is formed along the circumferential direction at the center thereof, and a second oil having a relatively lower oil flow rate than the first oil flow path 123 is formed at the outermost part thereof. A slider 120 in which a flow path 125 is formed; A cylinder rod 130 having one end connected to the fixed arm 25 of the pivot 14 of the end wall 13 and the other end inserted into the space 111; A pressure plate 140 having a size of a diameter capable of blocking the first oil flow path 123 and blocking the first oil flow path 123 when the end wall 13 is folded; A stopper (150) penetrating the fastening hole (121) of the slider (120) and fixed to an end of the cylinder rod (130) to limit the movement of the slider (120); And a cylinder housing cap 160 fastened to an end of the cylinder housing 110 to seal the space 111 of the cylinder housing 110.

The folding automatic flow rate control integrated shock absorber 100 of the end wall of the flat track container according to the first embodiment of the present invention will be described in detail as follows.

The cylinder housing 110 has a cylindrical shape, one end of which is a fixed end and the other end of the cylinder housing 110. The fixing end of the cylinder housing 110 is hinged 101 to the fixing bracket 22 of the base 11. The free end of the cylinder housing 110 is a portion into which the cylinder rod 130 is inserted, and a space 111 for accommodating oil is formed therein.

The slider 120 is positioned in the space 111 to be in contact with the inner circumferential surface of the cylinder housing 110, and is formed in the same shape as that of the cylinder housing 110, for example, in a circular shape.

The space 111 is divided into a first space 111a and a second space 111b by the slider 120. For convenience of description, the space in which the stopper 150 is positioned based on the slider 120 is defined as the first space portion 111a, and the space in which the pressure plate 140 is positioned is defined as the second space portion 111b. .

The slider 120 is installed to be movable in the longitudinal direction of the cylinder housing 110 according to the hydraulic action. A fastening hole 121 is formed in the center of the slider 120, and a first oil flow path 123 is formed along the circumference of the slider 120, and the outermost portion of the slider 120 is located at the outermost portion of the slider 120. A second oil flow path 125 having a lower oil flow rate than the first oil flow path 123 is formed.

The second oil flow path 125 is located farther from the fastening hole 121 of the slider 120 than the first oil flow path 123.

The diameter of the first oil passage 123 may be formed to be relatively larger than the diameter of the second oil passage 125.

One end of the cylinder rod 130 is pin (P) connected to the fixing arm 25 of the pivot 14 of the end wall 13 and the other end is inserted into the space 111.

The pressing plate 140 is formed to have a size of a diameter capable of blocking the first oil flow path 123 when the end wall 13 is folded. The female screw 141 of the pressure plate 140 is fastened to the male screw 131 of the cylinder rod 130, and the pressure plate 140 is fixed to the end of the cylinder rod 130. .

An end portion of the stopper 150 is formed with a female screw portion 151. The stopper 150 is positioned through the fastening hole 121 of the slider 120 and functions to limit the movement of the slider 120.

The female screw part 151 of the stopper 150 is fastened to the male screw part 131 of the cylinder rod 130 so that the stopper 150 is fixed to the end of the cylinder rod 130.

Immediately before the stopper 150 is fixed to the end of the cylinder rod 130, the slider 120 should be fitted to the stopper 150.

The cylinder housing cap 160 may be fastened to the end of the cylinder housing 110 by conventional fastening means, bolts, welding, etc. to seal the space 111 of the cylinder housing 110.

In the folding automatic flow rate control integrated shock absorber 100 of the end wall of the flat rack container according to the first embodiment of the present invention, when the end wall 13 is folded, the cylinder rod 130 is a cylinder housing When advancing in the lateral direction (indicated by arrow A), the pressure plate 140 blocks the first oil passage 123. At this time, the oil of the first space 111a flows into the second space 111b through the second oil flow path 125.

In addition, when the end wall 13 is unfolded, the pressure plate 140 opens the first oil flow path 123 so that the oil in the second space portion 111b is the first oil flow path 123. It is introduced into the first space 111a through.

Referring to the operation of the folding automatic flow control integrated shock absorber 100 of the end wall of the flat rack container according to the first embodiment of the present invention configured as described above are as follows.

The end wall 13 shown by the solid line in FIG. 3 remains unfolded. In this state, the operator pivots the end wall 13 slightly around the pivot 14. At this time, the fixed arm 25 fixed to the end wall 13 and the pivot 14 as shown by the imaginary line of FIG. 3 is switched to the state immediately before being folded by its own weight.

Then, when the end wall 13 rotates about the pivot 14 by its own weight, the fixed arm 25 fixed to the pivot 14 rotates about the pivot 14. At this time, the cylinder rod 130 coupled to the fixed arm 25 is compressed in the direction of the cylinder housing (indicated by arrow A).

As shown in FIG. 6, when the cylinder rod 130 is compressed toward the cylinder housing, the pressure plate 140 blocks the first oil flow paths 123 of the slider 120 for a predetermined time. . In this state, since the cylinder rod 130 continues to be compressed toward the cylinder housing by the rotation of the end wall 13, the oil of the first space portion 111a does not pass through the first oil passage 123. It flows into the second space part 111b through the second oil flow path 125. In this case, since the oil in the first space portion 111a flows to the second space portion 111b through the second oil flow path 125 allowing a relatively low flow rate, the movement of the cylinder rod 130 proceeds gradually. The end wall 13 also gradually falls.

When the end wall is folded by the series of hydraulic actions, the drop speed of the end wall 13 is adjusted to absorb the shock, thereby preventing damage to the base 11 and the end wall 13, and It is possible to effectively prevent the safety accidents of workers that can occur when descending.

On the contrary, referring to FIG. 3, when the end wall 13 is unfolded, when the end wall 13 is erected around the pivot 14 by a lifter (forklift), the fixed arm 25 fixed to the pivot 14 is provided. ) Rotates about pivot 14. At this time, the cylinder rod 130 coupled to the pin P with the fixed arm 25 is pulled in the direction opposite to the cylinder housing (indicated by arrow B).

As shown in FIG. 7, when the cylinder rod 130 is pulled in the direction opposite to the cylinder housing (indicated by arrow B), the pressure plate 140 opens the first oil flow paths 123 of the slider 120. Open. In this state, the cylinder rod 130 is pulled in the direction opposite to the cylinder housing by the rotation of the end wall 13, so that the oil in the second space portion 111b passes through the first oil flow passage 123 and is the first. It flows to the space part 111a. In this case, since the oil in the second space portion 11b flows to the first space portion 111a through the first oil flow path 125 allowing a relatively large flow rate, the reverse of the cylinder rod 130 has a large resistance. Proceed without, the operator can put the end wall 13 in an unfolded state.

On the other hand, Figure 8 is a perspective view showing a modification of the slider in the folding automatic flow rate control integrated shock absorber of the end wall of the flat track container according to the first embodiment of the present invention.

As shown in FIG. 8, an O-ring O may be provided on an outer circumferential surface of the slider 120. Wearing inevitably occurs in the contact portion between the components due to long-term use, in the absence of the O-ring outer peripheral surface of the slider 120 is worn and the slider 120 itself must be replaced. However, when the O-ring (O) is installed, the slider 120 is left as it is, only the O-ring (O) to be replaced with a new one, it is very advantageous in terms of economics.

On the other hand, Figure 9 is a perspective view showing another modified example of the slider in the folding automatic flow rate control integrated shock absorber of the end wall of the flat track container according to the first embodiment of the present invention.

As shown in FIG. 9, the cylinder rod 130, the pressure plate 140, and the stopper 150 may be integrally formed. In this case, the slider 120 is divided into two bodies 120 ', and coupling grooves 121' and coupling protrusions 122 'are formed at both ends of the one body 120', respectively. On both ends of the other body 120 ', coupling protrusions 122' and coupling grooves 121 'are formed, respectively. The slider 120 is assembled by inserting the coupling protrusion 122 'into the coupling groove 121' to fasten the two bodies 120 'into one. When the cylinder rod 130, the pressure plate 140 and the stopper 150 are integrally formed, the strength thereof may be further improved.

On the other hand, Figure 10 is a view showing a modification of the coupling structure of the cylinder housing and the slider in the folding automatic flow rate control integrated shock absorber of the end wall of the flat track container according to the first embodiment of the present invention.

As shown in FIG. 10, a guide groove 111 is formed along the longitudinal direction of the cylinder housing 110 on an inner wall surface of the cylinder housing 110, and the slide 120 corresponds to the guide groove 111. Guide protrusions 113 may be formed on the outer circumferential surface thereof. In this case, the slider 120 may slide more smoothly by the guide groove 111 and the guide protrusion 113.

In addition, although not shown in the drawing, the guide groove 111 and the guide protrusion 113 may be formed in a spiral shape. In this case, the slider 120 is moved while rotating, so that the hydraulic action can be executed more effectively.

On the other hand, Figure 11 is a cross-sectional view illustrating the hydraulic action when folding the end wall in the folding automatic flow control integrated shock absorber of the end wall of the flat rack container according to the second embodiment of the present invention, Figure 12 Sectional view explaining hydraulic action during unfolding of the end wall.

11 and 12, the folding automatic flow control integrated shock absorber 200 of the end wall of the flat rack container according to the second embodiment of the present invention is a fixing bracket 22 of the base 11 (see FIG. 2). One end is coupled to the hinge 201, the inside of the cylinder housing 210 is formed a space portion 211 for accommodating the oil; Located in the space portion 211, the space portion 211 is divided into a first space portion 211a and a second space portion 211b, and is installed to be movable in the longitudinal direction of the cylinder housing 210 A slider 220 in which a fastening hole 221 is formed in the center and a first oil flow path 223 is formed along the circumferential direction of the center; A cylinder rod 230, one end of which is connected to the fixed arm 25 of the pivot 14 of the end wall 13 and the other end of which is inserted into the space portion 211; A pressure plate 240 having a size of a diameter capable of blocking the first oil flow path 223 and blocking the first oil flow path 223 when the end wall 13 is folded; A second oil installed to connect the first space portion 211a and the second space portion 211b to the outside of the cylinder housing 210 and having a relatively lower oil flow rate than the first oil flow passage 223. A bypass pipe 270 in which a flow path 271 is formed; A stopper 250 that penetrates the fastening hole 221 of the slider 220 and is fixed to an end of the cylinder rod 230 to limit the movement of the slider 220; And a cylinder housing cap 260 fastened to an end of the cylinder housing 210 to seal the space 211 of the cylinder housing 210.

During folding of the end wall, when the cylinder rod 230 moves in the direction of arrow A, the pressure plate 240 blocks the first oil flow path 223. At this time, the oil of the first space portion 211a is introduced into the second space portion 211b through the second oil flow path 271 of the bypass pipe 270.

During the unfolding of the end wall 13, if the cylinder rod 230 retracts in the direction of arrow B, the pressure plate 240 opens the first oil passage 223 to open the second space part 370. ) Oil is introduced into the first space 211a through the first oil flow path 223.

A flow control valve 275 may be connected to the bypass pipe 270, and the flow control valve 275 may be exposed to the outside of the base 11.

By using the flow control valve 275 to adjust the amount of oil passing through the bypass pipe 270 can be arbitrarily adjusted the folding speed of the end wall by the flow of hydraulic pressure.

Referring to the operation of the folding automatic flow control integrated shock absorber of the end wall of the flat rack container according to the second embodiment of the present invention configured as described above are as follows.

Referring to FIG. 3, in a state in which the end wall 13 is standing vertically, that is, in an unfolding state, a fixed arm (fixed arm fixed to the pivot 14 by pushing the end wall 13 about the pivot 14) Slightly rotate 25). At this time, the end wall 13 rotates about the pivot 14 by its own weight, and the fixed arm 25 fixed to the pivot 14 rotates about the pivot 14. At this time, the cylinder rod 230 coupled with the pin P to the fixed arm 25 is compressed in the cylinder housing side direction (indicated by arrow A).

As illustrated in FIG. 11, when the cylinder rod 230 is compressed in the direction of the cylinder housing 210, the pressure plate 240 may have a predetermined time, and thus the first oil flow paths 223 of the slider 220 may be used. To block. In this state, the cylinder rod 230 is continuously compressed in the direction of the cylinder housing side (indicated by arrow A) by the rotation of the end wall 13, so that the oil in the first space portion 211a is discharged to the first oil flow path ( It does not pass through 223 and flows to the second space portion 211b through the second oil flow path 271 of the bypass pipe 270. In this case, since the oil in the first space portion 211a flows to the second space portion 211b through the second oil flow passage 271 allowing a relatively low flow rate, the movement of the cylinder rod 230 proceeds gradually. And the end wall 13 is also slowly folded. When the end wall is folded by the series of hydraulic actions, the drop speed of the end wall 13 is adjusted to prevent the damage of the base 11 and the end wall 13 by controlling the impact and to prevent the worker's safety accident. It can effectively prevent in advance.

On the contrary, when the end wall 13 is unfolded, when the end wall 13 is oriented about the pivot 14 as shown in FIG. 3, the fixed arm 25 fixed to the pivot 14 is pivoted. Rotate backwards around (14). At this time, the cylinder rod 230 coupled with the pin P to the fixed arm 25 is pulled in the direction opposite to the cylinder housing.

As shown in FIG. 12, when the cylinder rod 230 is pulled in a direction opposite to the cylinder housing (arrow B direction), the pressure plate 240 opens the first oil flow paths 223 of the slider 220. do. In this state, the cylinder rod 230 is pulled in the direction opposite to the cylinder housing by the rotation of the end wall 13, so that the oil in the second space part 211b passes through the first oil flow path 223 and is thus first. It flows into the space part 211a. In this case, since the oil in the second space portion 211b flows to the first space portion 211a through the first oil passage 223 allowing a relatively large flow rate, the movement of the cylinder rod 230 is large. It becomes possible without resistance. This series of hydraulic actions allows the operator to easily and quickly erect the end wall. When quickly set up by a forklift or the like, the oil moves quickly to the open flow path 233 so that the components in the housing do not suffer from hydraulic pressure.

On the other hand, Figure 13 is a perspective view showing a folding automatic flow control integrated shock absorber of the end wall of the flat rack container according to a third embodiment of the present invention, Figure 14 is a front view showing the slider of Figure 13, Figure 15 is the present invention Sectional view illustrating the hydraulic action during folding of the end wall in the folding automatic flow control integrated shock absorber of the end wall of the flat rack container according to the third embodiment of the present invention, Figure 16 is a view illustrating the operation of the oil flow path blocking film of FIG. 17 is a cross-sectional view for explaining the hydraulic action during unfolding of the end wall of FIG. 13, and FIG. 18 is a cross-sectional view for explaining the operation of the oil channel blocking film of FIG.

13 to 18, one end of the folding automatic flow control integrated shock absorber 300 of the end wall of the flat rack container according to the third embodiment of the present invention is fixed to the fixing bracket 22 of the base 11. Hinge 301 is coupled, the cylinder housing 310 is formed therein the space portion 311 for receiving oil; Located in the space 311, the space 311 is divided into a first space 311a and a second space 311b, and is installed to be movable in the longitudinal direction of the cylinder housing 310 The center of the fastening hole 321 is formed, the outer edge of the slider 320 is formed oil passages 323 in the circumferential direction; A cylinder rod (330) having one end connected to a fixed arm (25) of the pivot (14) of the end wall (13) and the other end inserted into the space part (311) and fixed to the slider (320); An oil flow path blocking film 380 rotatably installed around the hinge 381 on the front of the slider path 320 to selectively block the oil flow path 323 so as to control oil flow rate; A torsion spring 390 installed on the hinge 381 of the oil channel blocking film 380 to provide an elastic force to the oil channel blocking film 380; A stopper (350) penetrating the fastening hole (321) of the slider (320) to be fixed to the cylinder rod (320) to limit the movement of the slider (320); And a cylinder housing cap 360 that is fastened to an end of the cylinder housing 310 to seal the space portion 311 of the cylinder housing 310.

The width of the oil flow path blocking film 380 is greater than the width of the oil flow path 323 and is formed to be folded only when the cylinder rod 33 moves in the direction of arrow B during unfolding of the end wall. do.

The operation of the folding automatic flow control integrated shock absorber of the end wall of the flat rack container according to the third embodiment of the present invention configured as described above is as follows.

As shown in FIGS. 15 and 16, when the cylinder rod 330 is compressed toward the cylinder housing 310, the oil flow path blocking film 380 is elastically supported by the torsion spring 390. Most of the oil passage 323 is blocked and only part of it is kept open. Since the oil of the first space portion 311a moves to the second space portion 311b only in the open portion, the movement of the cylinder rod 330 proceeds gradually.

When the end wall is folded by the series of hydraulic actions, the drop speed of the end wall 13 is adjusted to prevent the damage of the base 11 and the end wall 13 by controlling the impact, and the worker's safety accident. Can be effectively prevented in advance.

On the other hand, as shown in Figs. 17 and 18, during the unfolding of the end wall, the oil flow path blocking film 380 is folded by the hydraulic pressure, the entire oil flow path 323 is opened. Since the oil of the first space portion 311a moves to the second space portion 311b as its open portion, the movement of the cylinder rod 330 proceeds without resistance.

Due to such a series of hydraulic actions, the operator can easily and quickly erect the end wall 13 without large resistance, and when it is erected quickly by a forklift, the oil moves quickly to the open flow path 233 to the parts in the housing. There is no force by the hydraulic pressure.

On the other hand, Figure 19 is a cross-sectional view illustrating the hydraulic action when folding the end wall in the folding automatic flow control integrated shock absorber of the end wall of the flat rack container according to the fourth embodiment of the present invention, Figure 20 is 18 is a longitudinal cross-sectional view illustrating the operation of the oil flow path blocking film of FIG. 18, FIG. 21 is a cross-sectional view illustrating the hydraulic action during unfolding of the end wall, and FIG. 22 is a longitudinal cross-sectional view illustrating the operation of the oil flow blocking film of FIG. 21.

19 to 22, one end of the folding automatic flow control integrated shock absorber 400 of the end wall of the flat rack container according to the fourth embodiment of the present invention is fixed to the fixing bracket 22 of the base 11. Hinge 401 is coupled, the cylinder housing 410 is formed therein the space portion 411 for receiving oil; Located in the space part 411, the space part 411 is divided into a first space part 411a and a second space part 411b, and is installed to be movable in the longitudinal direction of the cylinder housing 410. , A fastening hole 421 is formed in the center, and a slider 420 in which oil oil passages 423 are formed along the circumferential direction; A cylinder rod (430) having one end connected to the fixed arm (25) of the pivot (14) of the end wall (13) and the other end inserted into the space part (411) and fixed to the slider (420); An oil channel blocking film 480 of an elastic material installed to be folded or unfolded on the slider 420 to selectively open and close the oil channel 423 by oil pressure of the oil passing through the oil channel 423. ; A stopper 450 penetrating through the fastening hole 421 of the slider 420 and fixed to an end of the cylinder rod 430 to limit the movement of the slider 420; And a cylinder housing cap 460 fastened to an end of the cylinder housing 410 to seal the space part 411 of the cylinder housing 410.

Here, the oil flow path blocking film 480 is formed of a metal material, a hinge 481 is formed at the center thereof, and oil passage holes 483 through which the oil passes are formed at both sides of the hinge 481.

Referring to the operation of the folding automatic flow control integrated shock absorber of the end wall of the flat rack container according to the fourth embodiment of the present invention configured as described above are as follows.

The oil flow path blocking film 480 is maintained in an unfolded state by hydraulic pressure when the end wall is folded. At this time, since the oil passes through the oil passage hole 483, the movement of the cylinder rod 430 proceeds gradually (Figs. 19 and Fig. 19). 20).

When the end wall is folded by the series of hydraulic actions, the drop speed of the end wall 13 is adjusted to prevent damage to the base 11 and the end wall 13 by controlling the impact and to prevent operator's safety accident. Can be effectively prevented in advance.

On the other hand, during the unfolding of the end wall, if the oil flow path blocking film 480 is kept folded by hydraulic pressure, the entire oil flow path 423 is opened, and the oil passes through the open portion of the cylinder rod ( Movement of 430 proceeds without resistance (see FIGS. 21 and 22).

In detail, when the end wall is folded, the oil barrier layer 480 blocks the oil flow path 423 so that the oil in the first space part 411a may pass through the oil through hole 483. The oil blocking film 480 opens the entire oil passage 423 so that the oil in the second space portion 411b is introduced into the two space portions 411b and the oil barrier layer 480 opens when the end wall 13 is unfolded. The oil flows into the first space portion 411b through the oil passage 423. This series of hydraulic actions allows the operator to easily and quickly erect the end wall 13 without great resistance.

In the above, the present invention has been described with reference to the exemplary embodiments illustrated in the drawings, but those skilled in the art may various modifications and other equivalent embodiments therefrom. For example, in the exemplary embodiment of the present invention, only a structure in which one cylinder housing is assembled to one cylinder rod is described, but a structure in which several cylinder housings are connected in series or in parallel to one cylinder rod is also possible.

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1 is a perspective view of a conventional flat rack container

Figure 2 is a perspective view of a flat rack container according to the present invention

3 is a view for explaining folding of the end wall of FIG.

Figure 4 is an exploded perspective view showing a folding automatic flow control integrated shock absorber of the end wall of the flat rack container according to the first embodiment of the present invention

5 is a perspective view of the combination of FIG.

6 is a cross-sectional view illustrating the hydraulic action when folding the end wall of FIG.

7 is a cross-sectional view illustrating the hydraulic action during the unfolding of the end wall of FIG.

8 is a perspective view showing a modified example of the slider in the folding automatic flow rate control integrated shock absorber of the end wall of the flat rack container according to the first embodiment of the present invention

9 is a perspective view showing another modified example of the slider in the folding automatic flow rate control integrated shock absorber of the end wall of the flat rack container according to the first embodiment of the present invention

10 is a view showing a modified example of the coupling structure of the cylinder housing and the slider in the folding automatic flow rate control integrated shock absorber of the end wall of the flat track container according to the first embodiment of the present invention

11 is a cross-sectional view illustrating the hydraulic action during folding of the end wall in the folding automatic flow control integrated shock absorber of the end wall of the flat rack container according to the second embodiment of the present invention

12 is a cross-sectional view illustrating the hydraulic action during unfolding of the end wall of FIG.

Figure 13 is a perspective view showing a folding automatic flow rate control integrated shock absorber of the end wall of the flat rack container according to a third embodiment of the present invention

14 is a front view showing the slider of FIG.

15 is a cross-sectional view illustrating the hydraulic action when folding the end wall in the folding automatic flow rate control integrated shock absorber of the end wall of the flat rack container according to the third embodiment of the present invention

16 is a cross-sectional view for explaining the operation of the oil channel blocking film of FIG. 15.

17 is a cross-sectional view illustrating the hydraulic action during unfolding of the end wall of FIG.

18 is a cross-sectional view for explaining the operation of the oil channel blocking film of FIG. 17.

19 is a cross-sectional view illustrating the hydraulic action during folding of the end wall in the folding automatic flow rate control integrated shock absorber of the end wall of the flat rack container according to the fourth embodiment of the present invention

20 is a longitudinal cross-sectional view illustrating the operation of the oil flow path blocking film of FIG. 19 during unfolding.

21 is a cross-sectional view illustrating the hydraulic action when unfolding the end wall.

FIG. 22 is a longitudinal cross-sectional view illustrating the operation of the oil flow path blocking film of FIG. 21. FIG.

DESCRIPTION OF THE REFERENCE NUMERALS

11: base

13: end wall

14: pivot

20: flat rack container

22: retaining bracket

25: fixed arm

100: folding automatic flow control integrated shock absorber

101: hinge

110: cylinder housing

111: guide groove

111a: first space part

111b: second space part

113: guide projection

120: slider

120 ': body

121: fastening hole

121 ': Coupling Groove

122 ': splice protrusion

123: first oil euro

125: second oil euro

130: cylinder rod

131: male threaded portion of the cylinder rod

140: pressure plate

141: female screw part of the pressure plate

150: stopper

151: stopper arm thread

160: housing cap

O: O-ring

201: hinge

210: cylinder housing

211: space department

211a: first space part

211b: Second Space Division

221: fastening hole

223: first oil passage

220: slider

230: cylinder rod

240: pressure plate

250: stopper

260: cylinder housing cap

270: bypass tube

271: second oil euro

275: flow control valve

310: hinge

310: cylinder housing

311: space department

311a: first space part

311b: Second Space Division

321: fastening hole

320: slider

330: cylinder rod

323: oil euro

350: stopper

360: cylinder housing cap

381 hinge

380: oil path blocking film

390: torsion spring

401 hinge

410: cylinder housing

411 space department

411a: first space part

411b: second space part

420: slider

421: fastening hole

423: oil euro

430: cylinder rod

450: stopper

460: cylinder housing cap

480: oil flow path blocking film

Claims (10)

delete delete A cylinder housing having one end hinged to a fixing bracket of the base and having a space portion formed therein for accommodating oil therein; Located in the space portion, the space portion is divided into a first space portion and a second space portion, is installed so as to be movable in the longitudinal direction of the cylinder housing, a fastening hole is formed in the center, the outer portion of the first along the circumferential direction A slider having an oil flow path formed therein, and at the outermost side thereof a second oil flow path having a relatively lower flow rate than the first oil flow path; A cylinder rod, one end of which is connected to a fixed arm of the pivot of the end wall and the other end of which is inserted into the space portion; A pressure plate having a size of a diameter capable of blocking the first oil flow path and blocking the first oil flow path when the end wall is folded; A stopper penetrating the fastening hole of the slider and fixed to an end of the cylinder rod to limit the movement of the slider; And And a cylinder housing cap fastened to an end of the cylinder housing to seal the space portion of the cylinder housing. When the end wall is folded, the pressure plate blocks the first oil flow path such that oil in the first space flows into the second space flow through the second oil flow path, In the unfolding of the end wall, the pressure plate opens the first oil flow path so that the oil in the second space portion flows into the first space portion through the first oil flow path. Folding automatic flow control integrated buffer in the end wall of the container. The method of claim 3, And the second oil flow passage is located farther from the fastening hole of the slider than the first oil flow passage. The method according to claim 3 or 4, And a diameter of the first oil flow path is greater than a diameter of the second oil flow path. The method according to claim 3 or 4, The cylinder rod, the pressing plate and the stopper are integrally formed, the slider is divided into two bodies, and both ends of the body are formed with coupling grooves and engaging projections, respectively. Folding automatic flow control integrated shock absorber at the end wall. A cylinder housing having one end hinged to a fixing bracket of the base and having a space portion formed therein for accommodating oil therein; Located in the space portion, the space portion is divided into a first space portion and a second space portion, is installed so as to be movable in the longitudinal direction of the cylinder housing, a fastening hole is formed in the center, the outer portion of the first along the circumferential direction A slider in which an oil passage is formed; A cylinder rod, one end of which is connected to a fixed arm of the pivot of the end wall and the other end of which is inserted into the space portion; A pressure plate having a size of a diameter capable of blocking the first oil flow path and blocking the first oil flow path when the end wall is folded; A bypass tube installed outside the cylinder housing to connect the first space portion and the second space portion, the second oil passage having a relatively lower oil flow rate than the first oil passage; A stopper penetrating the fastening hole of the slider and fixed to an end of the cylinder rod to limit the movement of the slider; And And a cylinder housing cap fastened to an end of the cylinder housing to seal the space portion of the cylinder housing. When folding the end wall, the pressure plate blocks the first oil flow path so that the oil in the first space portion flows into the second space portion through the second oil flow path of the bypass pipe, In the unfolding of the end wall, the pressure plate opens the first oil flow path so that the oil in the second space portion flows into the first space portion through the first oil flow path. Folding automatic flow control integrated buffer in the end wall of the container. The method of claim 7, wherein The bypass pipe is the automatic flow control integrated shock absorber of the end wall of the flat track container, characterized in that the flow control valve is connected. The method of claim 8, The flow regulating valve is a folding automatic flow control integrated shock absorber of the end wall of the flat track container, characterized in that exposed to the outside of the base. A cylinder housing having one end hinged to a fixing bracket of the base and having a space portion formed therein for accommodating oil therein; Located in the space portion, the space portion is divided into a first space portion and a second space portion, is installed so as to be movable in the longitudinal direction of the cylinder housing, the fastening hole is formed in the center, the oil flow path along the circumferential direction The slider is formed; A cylinder rod having one end connected to a fixed arm of the pivot of the end wall and the other end inserted into the space part and fixed to the slider; An oil flow path blocking film rotatably installed around the hinge on the front of the slider to selectively block the oil flow path to adjust the oil flow rate; A torsion spring installed at a hinge of the oil channel blocking membrane to provide an elastic force to the oil channel blocking membrane; A stopper penetrating the fastening hole of the slider and fixed to an end of the cylinder rod to limit the movement of the slider; And And a cylinder housing cap fastened to an end of the cylinder housing to seal the space portion of the cylinder housing. When the end wall is folded, the oil barrier layer blocks a part of the oil flow path such that oil in the first space portion flows into the second space portion through an opening of the oil flow passage, In the unfolding of the end wall, the oil barrier film opens the entire oil passage so that the oil in the second space portion flows into the first space portion through the oil passage. Wall folding automatic flow control integrated shock absorber.

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