Lifting machine and transporting method of transporting goods

Abstract

To provide a lifting machine according to the present invention capable of improving safety when transporting goods are transported.SOLUTION: A lifting machine according to the present invention comprises a travel device, a lifting device, and a mounting device. The travel device is configured to be capable of travelling the lifting machine and the lifting device is configured to be capable of lifting and lowering transporting goods. The mounting device comprises a mounting unit configured to be capable of moving between the retreat position and the mounting position along a mounting device rail installed on the lifting device. The retreat position is the position not to interfere with the transporting good when the lifting machine hangs the transporting good. The mounting position is the position that the transporting good lifted to a higher position than the mounting unit can be mounted on the mounting unit.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a lifting machine capable of transporting an object, and a method for transporting an object. [Background technology]

[0002] Patent document 1 discloses a deck erection machine that includes a deck work vehicle for installing or removing deck slabs, a deck slab loading / unloading vehicle for lifting and lowering deck slabs that are loaded onto and unloaded from the deck work vehicle, and a lifting device that runs on a trolley rail that connects the deck work vehicle and the deck slab loading / unloading vehicle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-169347 Summary of the Invention [Problem to be solved by the invention]

[0004] In the technology of Patent Document 1, the lifting device moves while suspending the deck slab, so extremely careful operation is required to ensure safety.

[0005] The present invention has been made in view of the above circumstances, and has as its object to further improve safety when transporting goods. [Means for solving the problem]

[0006] According to the present invention, the following inventions are provided. [1] A lifting machine comprising a traveling device, a lifting device, and a loading device, wherein the traveling device is configured to enable the lifting machine to travel, the lifting device is configured to be able to lift and lower transported objects, and the loading device comprises a loading unit configured to be movable between a retracted position and a loading position along a loading device rail provided on the lifting device, the retracted position being a position where the lifting device does not interfere with the transported object when lifting it, and the loading position being a position where the transported object that has been lifted to a position higher than the loading unit can be loaded onto the loading unit. [2] The lifting machine according to [1], wherein the travelling device is provided with wheels for enabling the lifting machine to travel along a travelling device rail. [3] A lifting machine as described in [1] or [2], wherein the lifting device comprises first and second lifting units arranged spaced apart from each other in the direction in which the storage device rail extends, and the first and second lifting units each comprise a portal-shaped support portion and a lifting device, the portal-shaped support portion comprises a pair of legs and a connecting portion connecting the pair of legs, the lifting device is fixed to the connecting portion and is configured to be able to lift and lower the transported object, and the first and second lifting units are each fixed to the storage device rail. [4] [3] A lifting machine as described in [3], wherein the placement unit comprises first and second placement units that can move independently of each other along the placement device rail, and when the retracted position of the first placement unit is defined as the first retracted position, the first retracted position is located at a position farther from the second lifting unit than the lifting device of the first lifting unit, and when the retracted position of the second placement unit is defined as the second retracted position, the second retracted position is located at a position farther from the first lifting unit than the lifting device of the second lifting unit. [5] A method for transporting an object using a lifting machine as described in any one of [1] to [4], comprising a lifting process, a loading process, and a traveling process, in which, in the lifting process, the lifting device lifts the object to a position higher than the loading unit while the loading unit is placed in the retracted position, in the loading process, the lifting device loads the object on the loading unit while the loading unit is placed in the loading position, and in the traveling process, with the object loaded on the loading unit, the traveling device travels the lifting machine to transport the object. [Effects of the Invention]

[0007] The lifting machine of the present invention is configured to be able to travel with the transported goods lifted by the lifting device placed on the loading unit, so there is no need to travel with the lifting device suspending the transported goods, thereby increasing safety when transporting the transported goods. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view showing a state immediately before a lifting machine 1 according to an embodiment of the present invention starts to lift an object 5 to be transported. [Figure 2] FIG. 2 is an enlarged view of an area A in FIG. [Figure 3] FIG. 2 is a left side view of FIG. 1. [Figure 4] FIG. 4 is an enlarged view of an area A in FIG. [Figure 5] FIG. 2 is a front view of FIG. [Figure 6] 2 is a perspective view showing a state after the lifting device 3 has lifted the transported object 5 from the state shown in FIG. 1. FIG. [Figure 7] 7 is a perspective view showing a state after the lifting device 3 has placed the transported object 5 on the placement units 4A and 4B, following the state shown in FIG. 6. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] The following describes embodiments of the present invention. The various features shown in the following embodiments can be combined with each other. Each feature can also be an independent invention. Furthermore, elements not specified in the claims of the following embodiments are optional and can be omitted.

[0010] 1. First embodiment 1 to 7, a configuration of a lifting machine 1 and a method for transporting an object 5 according to a first embodiment of the present invention will be described. The lifting machine 1 of this embodiment can be used to transport any object 5, but in one example, it is suitably used for installing a new elevated road in the gap between two existing elevated roads 7 that run parallel to one another. In this application, the object 5 is, for example, a deck slab that constitutes the new elevated road. Furthermore, since the lifting machine 1 is capable of traveling, it is used for lifting the object 5 and then transporting the object 5 to another location. By using the lifting machine 1, a large number of deck slabs prepared in a specific location can be successively lifted to a position higher than the elevated road 7 and then moved horizontally, thereby efficiently constructing an elevated road.

[0011] 1-1. Configuration of lifting machine 1 As shown in FIG. 1, the lifting machine 1 includes a traveling device 2, a lifting device 3, and a placing device 4.

[0012] <Running device 2> The traveling device 2 is configured to enable the lifting machine 1 to travel. The traveling device 2 is provided with wheels 2b that enable the lifting machine 1 to travel along the traveling device rail 8. This allows the lifting machine 1 to travel stably. More specifically, as shown in FIG. 2, the traveling device 2 is provided with a frame 2a, wheels 2b, and a drive device 2c. The wheels 2b are connected to the frame 2a via an axle (not shown). The wheels 2b are driven to rotate by the drive device 2c. The traveling device 2 enables the lifting machine 1 to travel by driving the wheels 2b to rotate. It is preferable that the drive device 2c is equipped with a brake.

[0013] The traveling device rails 8 are preferably a pair of rails 8a installed on two existing elevated roads 7. The transported article 5 is placed between the pair of rails 8a in plan view.

[0014] The traveling device 2 is fixed to the lifting device 3. The loading device 4 is configured to move together with the lifting device 3. Therefore, the entire lifting machine 1 can be moved by moving the traveling device 2. The traveling device 2 is not limited to this. Instead, the traveling device 2 may have a wear plate attached to the lower end surface of the frame 2a, and may be moved by sliding along the traveling device rail 8. In this case, a meter-type traveling mechanism is preferably used as the traveling mechanism. In one example, the meter-type traveling mechanism is configured so that one side of an extendable cylinder mechanism is fixed to the traveling device 2 and the other side is free. With the traveling device 2 fixed to the traveling device rail 8, the cylinder mechanism is extended so that the other side moves away from the first side. With the cylinder mechanism extended, the other side is fixed to the traveling device rail 8. In this state, the cylinder mechanism is retracted to move one side closer to the other side, thereby causing the traveling device 2 to travel one cycle. By repeating this cycle, the traveling device 2 can travel like an inchworm.

[0015] <Lifting device 3> The lifting device 3 is configured to be able to lift and lower the transported object 5. Preferably, the lifting device 3 is only capable of lifting and lowering the transported object 5 and is not capable of horizontally transporting the transported object 5 by itself. In other words, it is preferable that the lifting device 3 is configured so that after the traveling device 2 moves the lifting device 3 horizontally and the horizontal position of the lifting device 3 is fixed, the lifting device 3 only lifts and lowers the transported object 5. The lifting device 3 is preferably disposed on the traveling device 2. As shown in FIG. 1, the lifting device 3 preferably includes first and second lifting units 3A and 3B spaced apart from each other in the direction in which the loading device rail 9 extends. The lifting units 3A and 3B preferably have the same configuration. As shown in FIG. 2, the lifting units 3A and 3B each include a portal support 10 and a lifting device 11.

[0016] The portal support unit 10 has a pair of legs 10a and a connecting portion 10b that connects the pair of legs 10a. A traveling device 2 is fixed to each leg 10a. More specifically, the leg 10a has a pair of support columns 10a1 whose spacing increases downward, and the lower ends of the support columns 10a1 are fixed to the upper surface of the frame 2a of the traveling device 2. This configuration improves the stability of the legs 10a. In this embodiment, the lifting device 3 is provided with four legs 10a, and a traveling device 2 is fixed to each leg 10a, so the lifting machine 1 can travel stably on four legs.

[0017] As shown in FIGS. 1 and 2, the lifting units 3A and 3B are each fixed to a platform rail 9. The platform rail 9 preferably includes a pair of rail units 9d. One of the pair of rail units 9d is fixed to one of the pair of legs 10a of each of the lifting units 3A and 3B, and the other of the pair of rail units 9d is fixed to the other of the pair of legs 10a of each of the lifting units 3A and 3B. As shown in FIG. 4, the rail unit 9d includes a rail support base 9d1 and a rail 9d2 fixed thereon. The rail support base 9d1 is fixed to the leg 10a. Since the lifting units 3A and 3B are connected to each other by the rail unit 9d, when the traveling device 2 is traveled, the lifting units 3A and 3B and the platform rail 9 travel together.

[0018] The lifting devices 11 are fixed to the connecting parts 10b and are configured to be able to lift and lower the transported object 5. In this embodiment, two lifting devices 11 are provided at each connecting part 10b. One example of the lifting devices 11 is a hydraulic jack, winch, or chain block, and in this case, the lifting devices 11 are equipped with a suspending material 3a such as a wire or chain, and a reeling device 3b, and the reeling device 3b reels and unreels the suspending material 3a, thereby enabling the lifting and lowering of the transported object 5.

[0019] <Placement device 4> 1, the loading device 4 includes first and second loading units 4A and 4B that are configured to be movable between a retracted position and a loading position along loading device rails 9 provided on the lifting device 3. The retracted position is a position where the lifting device 3 does not interfere with the transported object 5 when lifting the transported object 5. The loading position is a position where the transported object 5 that has been lifted to a position higher than the loading units 4A and 4B can be loaded onto the loading units 4A and 4B.

[0020] The mounting units 4A and 4B are configured to be movable independently of each other along the mounting device rail 9. The mounting units 4A and 4B preferably have the same configuration. As shown in FIG. 4, the mounting units 4A and 4B each include a frame 4a, wheels 4b, and a drive unit 4c. The wheels 4b are connected to the frame 4a via axles (not shown). The wheels 4b are driven to rotate by the drive unit 4c. The mounting units 4A and 4B become movable as the wheels 4b are driven to rotate. The drive unit 4c preferably has a brake.

[0021] The lifting units 3A and 3B are each fixed to the carrier rail 9 at a midpoint of the carrier rail 9. As shown in FIG. 5, the carrier rail 9 is provided with first and second outer portions 9a and 9b arranged outside a central portion 9c between the lifting devices 11 of the lifting units 3A and 3B. The first outer portion 9a is the outer portion on the first lifting unit 3A side, and the second outer portion 9b is the outer portion on the second lifting unit 3B side. The first outer portion 9a serves as a first retracted position for the first carrier unit 4A, and the second outer portion 9b serves as a second retracted position for the second carrier unit 4B. The first outer portion 9a and the first retracted position are positioned further away from the second lifting unit 3B than the lifting device 11 of the first lifting unit 3A, and the second outer portion 9b and the second retracted position are positioned further away from the first lifting unit 3A than the lifting device 11 of the second lifting unit 3B.

[0022] 1-2.Transportation method for transported items 5 Next, a description will be given of a method for transporting an object 5 using the lifting machine 1. This method includes a lifting step, a placing step, and a traveling step.

[0023] (1) Lifting process 1 to 6, in the lifting process, the lifting device 3 lifts the transported object 5 to a position higher than the mounting units 4A, 4B with the mounting units 4A, 4B placed in the retracted position. Specifically, a suspending material 3a is attached to the transported object 5 placed in a position lower than the mounting units 4A, 4B (e.g., on the ground), and with the mounting units 4A, 4B placed in the first and second retracted positions, respectively, the winding device 3b winds up the suspending material 3a, thereby lifting the transported object 5 to a position higher than the mounting units 4A, 4B. In this process, the lifting machine 1 is stopped.

[0024] (2) Placement process In the loading process, as shown in Fig. 7, the lifting device 3 loads the transported object 5 onto the loading units 4A, 4B with the loading units 4A, 4B placed at the loading position. As a result, the load of the transported object 5 that was applied to the hanging members 3a is transferred to the loading units 4A, 4B, and the lifting device 3 is no longer suspending the transported object 5 (i.e., no tension is applied to the hanging members 3a). In this process, the lifting machine 1 is also stopped.

[0025] (3) Running process In the traveling process, the traveling device 2 travels the lifting machine 1 to transport the transported object 5 while the transported object 5 is placed on the mounting units 4A and 4B. After the transported object 5 has been transported to the desired position, the mounting units 4A and 4B are moved to a retracted position with the load of the transported object 5 being applied to the hanging member 3a, and then the lifting device 3 suspends the transported object 5 to a desired height position and places it on a desired base. The base is, for example, a bridge pier. As a result, the load of the transported object 5 that was applied to the hanging member 3a is transferred to the base, and the hanging member 3a can be removed from the transported object 5.

[0026] Thereafter, the lifting machine 1 is moved to the initial position, and the above steps (1) to (3) can be repeated. According to this method, the lifting machine 1 travels with the transported objects 5 lifted by the lifting device 3 placed on the mounting units 4A, 4B. This eliminates the need to travel the lifting machine 1 with the transported objects 5 suspended by the lifting device 3, thereby improving safety when transporting the transported objects 5. Furthermore, because the lifting machine 1 is self-propelled, there is no need to move the lifting machine 1 every time a transported object 5 is lifted, and efficient transport of the transported objects 5 is possible. The lifting machine 1 may be capable of traveling with the lifting device 3 suspending the transported objects 5, but it may also be configured so that it cannot travel in this state. In this case, the lifting machine 1 will not be caused to travel with the transported objects 5 suspended by the lifting device 3 due to erroneous operation, further improving safety.

[0027] 2. Other embodiments The traveling device 2 may be configured to travel on a road without rails. One of the lifting units 3A, 3B can be omitted if it is not needed. In this case, it is desirable to arrange the lifting unit so that it overlaps the center of gravity of the transported object 5 in a plan view. The leg 10a may be configured as a single support 10a1. In this case, in order to improve stability, it is preferable that the length of the support 10a1 increases toward the bottom end in the direction in which the mounting device rail 9 extends. The number of lifting devices provided at each connecting portion 10b may be one or three or more. One of the placement units 4A, 4B can be omitted if it is not needed. In this case, it is desirable to arrange the placement position of the placement unit so that it overlaps with the center of gravity of the transported object 5 in a plan view. [Explanation of symbols]

[0028] 1: Lifting machine 2: Running gear 2b:wheel 3: Lifting device 3A: First lifting unit 3B: Second lifting unit 4: Loading device 4A: First loading unit 4B: Second loading unit 5: Transported items 8: Running gear rail 9: Loading device rail 10: Gate type support part 10a: Legs 10b:Connection part 11: Lifting device

Claims

1. A lifting machine including a traveling device, a lifting device, and a loading device, the traveling device is configured to enable the lifting machine to travel; The lifting device is configured to be able to lift and lower the transported object, the loading device includes a loading unit configured to be movable between a retracted position and a loading position along a loading device rail provided on the lifting device, The retracted position is a position where the lifting device does not interfere with the transported object when lifting the transported object, The loading position is a position where the transported object, which has been lifted to a position higher than the loading unit, can be loaded onto the loading unit.

2. The lifting machine according to claim 1, The lifting machine, wherein the travelling gear comprises wheels for enabling the lifting machine to travel along travelling gear rails.

3. The lifting machine according to claim 1, the lifting device includes first and second lifting units arranged spaced apart from each other in a direction in which the placement device rail extends, The first and second lifting units each include a portal support and a lifting device; the gate-shaped support portion includes a pair of legs and a connecting portion that connects the pair of legs, The lifting device is fixed to the connecting portion and is configured to be able to lift and lower the transported object, The first and second lifting units are each fixed to the loading device rail.

4. The lifting machine according to claim 3, the mounting unit includes first and second mounting units that are independently movable along the mounting device rails; When the retracted position of the first mounting unit is a first retracted position, the first retracted position is disposed at a position farther from the second lifting unit than the lifting device of the first lifting unit, A lifting machine, wherein when the retracted position of the second loading unit is a second retracted position, the second retracted position is positioned at a position farther from the first lifting unit than the lifting device of the second lifting unit.

5. A method for transporting an object using the lifting machine according to any one of claims 1 to 4, The system includes a lifting process, a placing process, and a traveling process, In the lifting step, the lifting device lifts the transported object to a position higher than the placement unit while the placement unit is placed at the retracted position, In the placing step, the lifting device places the transported object on the placing unit with the placing unit disposed at the placing position, In the traveling step, the traveling device travels the lifting machine to transport the transported object while the transported object is placed on the placement unit, thereby transporting the transported object.

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