Boarding / alighting device and boarding / alighting method

Abstract

The present invention provides a boarding / disembarking device and method that improves safety when boarding and disembarking between a floating body on the water and land, while reducing the possibility of damage due to contact with the floating body. [Solution] The boarding / alighting device 10, used for boarding and alighting between a floating body 20 on the water 72 and land 71, is installed on land 71 and comprises a base 1 having a first rotating part 2 that is rotatable around a first rotation axis 2A along the vertical direction, and a bridge part 3 having a first end 31 and a second end 32, connected to the first rotating part 2 at the second end 32 side, and which rotates so that the first end 31 protrudes over the water 72 and spans the floating body 20 on the water 72 as the first rotating part 2 rotates around the first rotation axis 2A. The base 1 and bridge part 3 are stored on land 71 so as not to protrude over the water 72 when the boarding / alighting device 10 is not in use.

Description

Technical Field

[0001] The present disclosure relates to a boarding and alighting device and a boarding and alighting method for boarding and alighting between a floating body on water and land.

Background Art

[0002] In order to board and alight between a floating body such as a ship or a barge and land, a vertical ladder installed on a quay wall where the floating body docks, with its longitudinal direction being the vertical direction, and a scaffold at the upper end of the ladder may be used.

[0003] Patent Document 1 discloses a drawbridge provided with a tensioning device. When the drawbridge is spanned over a floating pier where the floating body docks, the drawbridge disclosed in Patent Document 1 is supported by the tensioning device so that the floating pier does not sink, the load applied by the drawbridge to the floating pier is controlled, and the sinking of the floating pier can be prevented. Further, the drawbridge disclosed in Patent Document 1 can adjust the vertical position of the drawbridge.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] When using a vertical ladder, there is a problem that the safety of boarding and alighting decreases because the floating body moves far away from the quay wall due to the influence of waves or wind direction. Further, when the ladder is installed protruding into the sea from the end of the quay wall so as to reach the floating body, there is a risk that the docked floating body and the ladder will come into contact and the floating body or the ladder will be damaged.

[0006] Although the drawbridge disclosed in Patent Document 1 can adjust the vertical position with respect to the docked floating body, since it is installed protruding into the sea, there is a risk that the docked floating body will come into contact with the drawbridge and the floating body or the drawbridge will be damaged.

[0007] In view of the above facts, this disclosure aims to provide an boarding / disembarking device and method that can improve safety when boarding or disembarking between a floating body on water and land, while reducing the possibility of damage due to contact with the floating body. [Means for solving the problem]

[0008] (1) an access device according to one embodiment of the present disclosure is used for boarding and alighting between a floating body on water and land. The access device comprises a base installed on land and having a first rotating part that is rotatable around a first rotation axis in the vertical direction, and a bridge part having a first end and a second end, connected to the first rotating part at the second end, and which rotates so that the first end protrudes above the water and spans the floating body on the water as the first rotating part rotates around the first rotation axis. The base and the bridge part are stored on land so as not to protrude above the water when the access device is not in use.

[0009] (2) In the boarding / alighting device described in (1) above, the bridge section may be provided with a second rotating section that moves the first end up and down by rotating around a second rotating axis along the horizontal direction.

[0010] (3) The boarding / alighting device described in (2) above may further include a drive device for moving the first end of the bridge section up and down.

[0011] (4) In the boarding / alighting device described in (3) above, the drive device may include a support member that supports the portion of the bridge section between the second rotating section and the first end, and a drive unit that drives the support member to move the first end up and down.

[0012] (5) A boarding and alighting method according to one embodiment of the present disclosure is a boarding and alighting method using the boarding and alighting device described in (1) above, comprising a turning step of turning the bridge section toward the floating body on the water, and a boarding and alighting step of boarding and alighting between the floating body on the water and the land via the bridge section.

[0013] A boarding / alighting method according to one embodiment of the present disclosure (6) is a boarding / alighting method using a boarding / alighting device described in any one of (2) to (4) above, comprising: an raising step of raising the first end of the bridge section; a turning step of rotating the bridge section toward the floating body on the water; a lowering step of lowering the first end of the bridge section toward the floating body on the water; and a boarding / alighting step of boarding / alighting between the floating body on the water and the land via the bridge section.

[0014] (7) In the turning step of the boarding / alighting method described in (5) or (6) above, a passenger boarding or alighting located on either the land or the floating body on the water may turn the bridge using a jig that can push the bridge from the land and pull the bridge from the floating body on the water. [Effects of the Invention]

[0015] According to this disclosure, a boarding / disembarking device and method are provided that can improve safety when boarding or disembarking between a floating body on water and land, while reducing the possibility of damage due to contact with the floating body. [Brief explanation of the drawing]

[0016] [Figure 1] This is a plan view showing an example of the configuration of the boarding / alighting device related to this disclosure. [Figure 2] Figure 1 is a side view of the boarding / alighting device. [Figure 3] This is a block diagram showing an example of the configuration of the passenger boarding / alighting device related to this disclosure. [Figure 4] This is a plan view showing an example configuration when the boarding / disembarking device shown in Figure 1 is installed on a quay. [Figure 5] Figure 4 is a side view of the boarding / alighting device. [Figure 6] This is a plan view showing an example configuration when the bridge section is rotated toward the floating body. [Figure 7] This is a side view showing an example configuration when the first end of the bridge section is raised. [Figure 8] This figure shows an example of a route for moving the bridge section. [Figure 9]It is a flowchart showing an example of the procedure of the boarding and alighting method according to the present disclosure. [Figure 10] It is a diagram showing a configuration example of a jig used to turn the bridge part.

Mode for Carrying Out the Invention

[0017] Hereinafter, embodiments of the boarding and alighting device and the boarding and alighting method according to the present disclosure will be described based on the drawings. Each drawing is schematic and may be different from the actual one. Further, the following embodiments exemplify an apparatus or method for embodying the technical idea of the present disclosure, and do not specify the configuration to the following. That is, the technical idea of the present disclosure can be variously modified within the technical scope described in the claims.

[0018] (Embodiment) As shown in FIGS. 1 and 2, the boarding and alighting device 10 according to the present disclosure includes a base 1, a bridge part 3, a wire 5, a winch 6, a gantry 7, and a safety fence 8. As shown in FIG. 3, the boarding and alighting device 10 includes an operating device 11 of the winch 6. As shown in FIGS. 4 and 5, the boarding and alighting device 10 is installed on a quay wall 71 facing the sea 72. A safety fence 9 is installed around the boarding and alighting device 10 on the quay wall 71.

[0019] The boarding and alighting device 10 is used for boarding and alighting between the quay wall 71 and the floating body 20 (see FIG. 6). In other words, the boarding and alighting device 10 is used for boarding from the quay wall 71 to the floating body 20 and / or alighting from the floating body 20 to the quay wall 71. The floating body 20 is an object such as a ship or a barge floating on the sea 72. A barge is a ship without power in its main body and cannot sail by itself. The floating body 20 is not limited to the sea 72 and may be an object floating on water such as a river, a lake or a pond. The quay wall 71 may be replaced with land on which the boarding and alighting device 10 can be installed. The quay wall 71 may be replaced with a jetty installed on water or a floating jetty floating on water as long as the boarding and alighting device 10 can be installed.

[0020] The base 1 includes a first rotating part 2. The first rotating part 2 has a first rotation axis 2A that is aligned in the vertical direction.

[0021] The bridge section 3 has a first end 31 and a second end 32. The bridge section 3 has a first portion 33 on the first end 31 side and a second portion 34 on the second end 32 side. The first portion 33 and the second portion 34 may be plate-shaped members. The bridge section 3 is connected to the first rotating portion 2 of the base 1 at the second end 32 side. The bridge section 3 pivots in the horizontal plane as the first rotating portion 2 rotates, as shown in Figure 6.

[0022] The operation to rotate the bridge section 3 may be performed manually by passengers boarding or alighting between the floating body 20 and the quay 71 using the boarding / alighting device 10, or by workers other than passengers. The first rotating section 2 may be configured to be rotated by a drive device. The drive device may be operated by passengers or workers other than passengers.

[0023] When not in use, i.e., when not used for boarding or disembarking, the boarding / disembarking device 10 is stored on the quay 71, i.e., on land, so as not to protrude toward the sea 72, i.e., out of the water. This prevents the floating body 20 from colliding with the boarding / disembarking device 10 when approaching or docking at the quay 71. On the other hand, when in use, i.e., when used for boarding or disembarking, the boarding / disembarking device 10 rotates its bridge section 3 toward the floating body 20 that is approaching or docking at the quay 71, causing the first end 31 of the bridge section 3 to protrude toward the sea 72, i.e., out of the water, and is placed over the floating body 20, thereby enabling safe boarding and disembarking between the quay 71 and the floating body 20. In other words, the boarding / disembarking device 10 can improve safety when boarding or disembarking between the floating body 20 on the water and the quay 71, while reducing the possibility of damage to the floating body 20 due to contact.

[0024] The bridge section 3 includes a second rotating section 4. The second rotating section 4 is located at the point connecting the first section 33 and the second section 34, and is configured to allow the first section 33 to rotate relative to the second section 34 by having a second rotation axis 4A. The second rotation axis 4A is an axis that lies along the direction of extension of the first rotation axis 2A, i.e., a direction different from the vertical direction. In other words, the second rotation axis 4A extends in a torsional relationship with respect to the first rotation axis 2A. In this disclosure, the second rotation axis 4A extends in a direction that is included in the horizontal plane, but may be inclined with respect to the horizontal plane. Also in this disclosure, the second rotation axis 4A extends in a direction perpendicular to the longitudinal directions of the first section 33 and the second section 34 of the bridge section 3. The second rotation axis 4A is not limited to extending in a direction perpendicular to the longitudinal directions of the first section 33 and the second section 34 of the bridge section 3, but may extend in a direction that intersects them. The first part 33 of the bridge section 3 rotates around a second rotation axis 4A that extends in a direction different from the vertical direction relative to the second part 34, thereby adjusting the vertical position of the first end 31 of the bridge section 3.

[0025] The frame 7 is installed on the first rotating section 2 of the base 1. The winch 6 is installed on the frame 7. The wire 5 is connected between the winch 6 and the wire connection section 35 of the bridge section 3. The wire connection section 35 is located in the first section 33 of the bridge section 3. The tension applied to the wire 5 supports the bridge section 3 so that its first end 31 does not descend. The wire connection section 35 may be located on the side of the bridge section 3 closer to the first end 31. The tension is relieved when the wire 5 supports the bridge section 3 on the side closer to the first end 31. The frame 7, winch 6, and wire 5 pivot together with the bridge section 3 when the first rotating section 2 rotates.

[0026] The winch 6 can raise or lower the wire 5. When the winch 6 raises the wire 5, an upward tension is applied to the wire connection 35 against gravity, causing the first part 33 of the bridge section 3 to rotate upward and the first end 31 to rise, as shown in Figure 7. Conversely, when the winch 6 lowers the wire 5, the upward tension applied to the wire connection 35 weakens, causing the first part 33 of the bridge section 3 to rotate downward due to gravity and the first end 31 to descend.

[0027] The winch 6 may be configured to raise or lower the wire 5 using a motor or other power source. The winch 6 is operated by an operating device 11. The operating device 11 may be configured to be operated by passengers boarding or disembarking between the floating body 20 and the quay 71 using the boarding / disembarking device 10, or it may be configured to be operated by workers other than passengers. The operating device 11 may be connected to the winch 6 by a wire, or it may be configured to allow the winch 6 to be operated wirelessly. The winch 6 may also be configured to raise or lower the wire 5 manually.

[0028] As described above, by configuring the first end 31 of the bridge section 3 to be movable vertically, the height of the first end 31 can be adjusted to the height of the upper surface of the floating body 20 when the first end 31 of the bridge section 3 is placed on the floating body 20. In this way, the height of the first end 31 is adjusted in accordance with the change in the vertical position of the floating body 20, depending on the tide level of the sea 72 or the weight of the floating body 20. As a result, the work of placing the first end 31 of the bridge section 3 on the floating body 20 becomes easier. In addition, the safety of boarding and disembarking between the quay 71 and the floating body 20 is improved.

[0029] The wire 5 and winch 6 are devices that move the first end 31 of the bridge section 3 up and down, and are also called drive devices. The wire 5 is a member that supports the first part 33 of the bridge section 3 with tension, and is also called a support member. The winch 6 is a part that rotates the first part 33 of the bridge section 3 connected to the wire 5 up and down by winding up or unwinding the wire 5, that is, by driving the wire 5, and is also called a drive unit.

[0030] The bridge section 3 does not necessarily have to have a second rotating section 4. In this case, the first section 33 and the second section 34 may be configured as a single plate-like member. Also in this case, the boarding / alighting device 10 does not necessarily have to include a wire 5, a winch 6, and a frame 7.

[0031] The safety fence 8 can prevent passengers boarding or alighting between the floating body 20 and the quay 71 using the boarding / alighting device 10 from falling from the bridge section 3 when they pass over the bridge section 3. The safety fence 8 may be constructed by combining rod-shaped members or plate-shaped members, but is not limited to these. The safety fence 8 may also have a part that fits with the jig 50 (see Figure 10), which will be described later, when the bridge section 3 is rotated using the jig 50.

[0032] The boarding / alighting device 10 may further include a locking device 60 as illustrated in Figure 8. The locking device 60 is installed on the quay 71 and locks the bridge section 3 to the inside of the quay 71. The locking device 60 is used when the first portion 33 of the bridge section 3 is configured to be rotatable by the second rotating section 4.

[0033] The locking device 60 comprises a protruding portion 61, a base portion 62, and a fixing portion 63. The fixing portion 63 fixes the base portion 62 to the quay wall 71. The base portion 62 supports the first portion 33 of the bridge section 3 when it is lowered. The protruding portion 61 restricts the movement of the bridge section 3 to rotate horizontally toward the sea 72 when the first portion 33 is positioned below the tip of the protruding portion 61.

[0034] When passengers board or alight from the floating body 20 from the quay 71 using the boarding / alighting device 10, the procedure for boarding or alighting may be the steps shown in the flowchart illustrated in Figure 9. The following describes the case in which passengers carry out the boarding / alighting method. Passengers may be located on the quay 71 or on the floating body 20.

[0035] Passengers raise the bridge section 3 (step S1). Step S1 is also called the raising step. Specifically, passengers operate the winch 6 with the operating device 11 and raise the bridge section 3 by winding up the wire 5 with the winch 6. If the boarding / alighting device 10 is equipped with a locking device 60, passengers raise the bridge section 3 from the position where it is locked by the locking device 60, i.e., the position of bridge section 3A in Figure 8, to a position higher than the upper surface of the floating body 20, i.e., the position of bridge section 3B in Figure 8. Even if the boarding / alighting device 10 is not equipped with a locking device 60, passengers may raise the bridge section 3 to a position higher than the upper surface of the floating body 20.

[0036] Returning to Figure 9, passengers rotate the bridge section 3 toward the floating body 20 (step S2). Step S2 is also called the rotation step. Specifically, if passengers are located on the quay 71, they push the bridge section 3 toward the floating body 20 to rotate it so that the first end 31 of the bridge section 3 is placed over the floating body 20. If passengers are located on the floating body 20, they pull the bridge section 3 toward the floating body 20 to rotate it so that the first end 31 of the bridge section 3 is placed over the floating body 20. Passengers rotate the bridge section 3 from the position of bridge section 3B in Figure 8 to the position of bridge section 3C in Figure 8, where the first end 31 of the bridge section 3 is placed over the floating body 20.

[0037] A jig 50, as illustrated in Figure 10, may be used to rotate the bridge section 3 for passengers or workers. The jig 50 is, for example, a rod-shaped object of sufficient length to be used by passengers or workers, and has a first fitting portion 51 and a second fitting portion 52 at one end.

[0038] The first fitting portion 51 is configured to fit onto the bar 81 of the safety fence 8 of the bridge section 3. When passengers are located on the quay 71, they can push the bridge section 3 toward the floating body 20 by fitting the first fitting portion 51 onto the bar 81 and pushing.

[0039] The second fitting portion 52 is configured to fit onto the bar 82 of the safety railing 8 of the bridge section 3. The bar 82 may be made of the same material as the bar 81 or a different material. When a passenger is positioned on the floating body 20, they can pull the bridge section 3 towards the floating body 20 by fitting the second fitting portion 52 onto the bar 82 and pulling.

[0040] When rotating the bridge section 3 using the jig 50, it is preferable that the position where the jig 50 is fitted is as close as possible to the first end 31, that is, far from the first rotating section 2. By pushing or pulling at a position far from the first rotating section 2, it becomes possible to rotate the bridge section 3 with a small force.

[0041] Returning to Figure 9, passengers lower the bridge section 3 (step S3). Step S3 is also called the lowering step. Specifically, passengers operate the winch 6 with the operating device 11 and lower the wire 5 with the winch 6, thereby lowering the bridge section 3 from the position of bridge section 3C in Figure 8 to the position where the first end 31 of the bridge section 3 approaches or contacts the upper surface of the floating body 20, that is, the position of bridge section 3D in Figure 8.

[0042] Returning to Figure 9, passengers board and alight between the floating structure 20 and the quay 71 via the bridge section 3 (step S4). Step S4 is also called the boarding / alighting step. If a passenger is located on the quay 71, they board the floating structure 20 via the bridge section 3. If a passenger is located on the floating structure 20, they alight from the floating structure 20 via the bridge section 3.

[0043] Passengers raise bridge section 3 (step S5). Passengers operate winch 6 in the same manner as in step S1, raising bridge section 3 from position 3D to position 3C in Figure 8.

[0044] Returning to Figure 9, passengers rotate the bridge section 3 toward the quay 71, i.e., land (step S6). Passengers may rotate the bridge section 3 in the same manner as in step S2. Specifically, passengers rotate the bridge section 3 from the position of bridge section 3C in Figure 8 to the position of bridge section 3B.

[0045] Returning to Figure 9, passengers lower bridge section 3 (step S7). Passengers operate winch 6 in the same manner as in step S3, lowering bridge section 3 from position 3B to position 3A in Figure 8. After completing step S7, passengers complete the procedure in the flowchart in Figure 9.

[0046] The above describes an example of the procedure in the flowchart of Figure 9 being performed by passengers. However, at least part of the procedure, excluding the boarding and alighting procedure between the floating body 20 and the quay 71 in step S4, may be performed by workers other than passengers.

[0047] If the boarding / alighting device 10 does not include a drive device for moving the first end 31 of the bridge section 3 up and down, steps S1, S3, S5, and S7 are not performed. Even if the boarding / alighting device 10 includes a drive device for moving the first end 31 of the bridge section 3 up and down, steps S1, S3, S5, and S7 are not required to be performed. In other words, passengers may perform only the turning step and the boarding / alighting step.

[0048] <Summary> As described above, the boarding / alighting device 10 according to this disclosure can rotate the bridge section 3 horizontally. In this way, the boarding / alighting device 10 can be stored in the quay 71 when not in use and can be attached to the floating body 20 when in use. As a result, safety when boarding and alighting between the floating body 20 on the water and the quay 71 can be improved, while the possibility of damage due to contact with the floating body 20 can be reduced.

[0049] Furthermore, the boarding / alighting device 10 according to this disclosure allows the first end 31 of the bridge section 3 to move vertically. This makes it possible to adjust the height of the first end 31 to the height of the upper surface of the floating body 20 when the first end 31 of the bridge section 3 is placed on the floating body 20. As a result, even if the height of the upper surface of the floating body 20 changes according to the tide level of the sea 72 or the weight of the floating body 20, the work of placing the first end 31 of the bridge section 3 on the floating body 20 becomes easier. In addition, the safety of boarding and alighting between the quay 71 and the floating body 20 is enhanced.

[0050] (Other embodiments) Other embodiments of the boarding / alighting device 10 relating to this disclosure will be described.

[0051] <Other configuration examples of base 1> The base 1 may be configured to be movable on the quay 71 in the direction toward the sea 72. In this case, the base 1 is stored inside the quay 71, i.e., away from the end of the quay 71, when the boarding / disembarking device 10 is not in use, and is moved to the end of the quay 71 when the boarding / disembarking device 10 is in use. By storing the base 1 inside the quay 71, the possibility of the floating body 20 coming into contact with the boarding / disembarking device 10 when approaching or docking with the quay 71 is reduced.

[0052] A configuration in which the base 1 is movable may be adopted when installing the boarding / alighting device 10 on a quay 71 that has steps. Assume that the steps of the quay 71 are lower at the end of the quay 71 closer to the sea 72 and higher on the inside of the quay 71 further away from the sea 72.

[0053] <Other configuration examples for bridge section 3> The bridge section 3 may be configured to be extendable and retractable. The bridge section 3 may be configured to extend and retract, for example, by the first section 33 or the second section 34 sliding in the longitudinal direction. Extending the bridge section 3 when the boarding / alighting device 10 is in use makes it easier to place the first end 31 of the bridge section 3 on the floating body 20. Also, by retracting the bridge section 3 when the boarding / alighting device 10 is not in use, the possibility of other objects such as the floating body 20 colliding with the boarding / alighting device 10 is reduced.

[0054] <Other configuration examples for rotating the second rotating part 4> In the embodiments described above, the second rotating part 4 was rotated by winding up or down the wire 5 with a winch 6 installed on the frame 7. The second rotating part 4 may be configured to be rotated by other means.

[0055] For example, the wire 5 as a support member may be replaced with a rod-shaped member, and the winch 6 as a drive unit may be replaced with a device that slides the rod-shaped member. In this case, the first part 33 of the bridge section 3 rotates upward as the rod-shaped member slides upward. Conversely, the first part 33 of the bridge section 3 rotates downward as the rod-shaped member slides downward.

[0056] Furthermore, a rod-shaped handle extending upward may be connected to the first portion 33 of the bridge section 3. The first portion 31 may be configured to rotate upward by tilting the rod-shaped handle toward the second end 32. The second rotating section 4 may also be configured to rotate the first portion 33 of the bridge section 3 up and down using power such as a motor.

[0057] While embodiments of this disclosure have been described based on the drawings and examples, it should be noted that those skilled in the art can make various modifications or alterations based on this disclosure. Therefore, it should be noted that these modifications or alterations are included within the scope of this disclosure. For example, the functions included in each component or step can be rearranged in a logically consistent manner, and multiple components or steps can be combined into one or divided. Embodiments relating to this disclosure can also be realized as programs executed by a processor in the device or as storage media recording such programs. These should also be understood to be included within the scope of this disclosure. [Explanation of Symbols]

[0058] 1 base 2. First rotation section (2A: First rotation axis) 3. 3A~3D Bridge section (31: First end, 32: Second end, 33: First section, 34: Second section, 35: Wire connection section) 4. Second rotating section (4A: Second rotation axis) 5 wires 6 winches 7. Stand 8. Safety fences (81, 82: bars) 9 Safety fence 10. Boarding / Alighting Device 11 Operating device 20 Floating bodies 50 Jig (51: First fitting part, 52: Second fitting part) 60 Locking device (61: protruding part, 62: base part, 63: fixing part) 71 Wharf 72 Sea

Claims

1. A boarding / disembarking device used for boarding and disembarking between a floating body on the water and land, The base, which is installed on land and has a first rotating part that is rotatable around a first rotation axis aligned vertically, A bridge section having a first end and a second end, connected at the second end to the first rotating part, and which rotates so that the first end protrudes above the water and spans the floating body on the water as the first rotating part rotates around the first rotation axis. Equipped with, The base and bridge sections of the boarding / alighting device are stored on land so as not to protrude above the water when the boarding / alighting device is not in use.

2. The boarding / alighting device according to claim 1, wherein the bridge section is provided with a second rotating section that moves the first end up and down by rotating around a second rotating axis along the horizontal direction.

3. The boarding / alighting device according to claim 2, further comprising a drive device for moving the first end of the bridge section up and down.

4. The drive device is A support member that supports the portion of the bridge section between the second rotating section and the first end, A drive unit that drives the support member to move the first end up and down, The boarding / alighting device according to claim 3, comprising:

5. A method of boarding and alighting using the boarding and alighting device described in claim 1, A turning step that rotates the bridge section toward the floating body on the water, A boarding / alighting step for boarding and alighting between the floating body on the water and the land via the aforementioned bridge section. Methods of boarding and alighting, including those related to boarding and alighting.

6. A method of boarding and alighting using the boarding and alighting device described in claim 2, A lifting step that raises the first end of the bridge section, A turning step that rotates the bridge section toward the floating body on the water, A lowering step that lowers the first end of the bridge section to the floating body on the water, A boarding / alighting step for boarding and alighting between the floating body on the water and the land via the aforementioned bridge section. Methods of boarding and alighting, including those related to boarding and alighting.

7. The boarding and alighting method according to claim 5 or 6, wherein in the turning step, a person boarding or alighting, located on either the land or the floating body on the water, is made to turn the bridge using a jig that can push the bridge from the land and pull the bridge from the floating body on the water.

Images