Lifting rack and lifting rack set

Abstract

To allow elevators to be used efficiently.SOLUTION: A lifting rack LR of the present disclosure is removably installed inside an elevator EV, and includes a loading section 1, a lifting section 2 that raises and lowers the loading section 1, and a guide section 3 that guides the movement of the loading section 1 in the lifting and lowering direction. For example, the lifting section 2 includes a plurality of chain blocks 21, and the guide section 3 is provided spaced apart on the ceiling side of the elevator EV and includes ceiling-side mounting sections that mount the corresponding chain blocks 21 on the ceiling side of the elevator EV.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a lift rack and a lift rack set that are removably installed in an elevator. [Background technology]

[0002] For example, at a construction site of a building, a construction elevator (temporary elevator) is installed to move between floors of the building and transport materials and equipment (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2024-39218 Summary of the Invention [Problem to be solved by the invention]

[0004] However, depending on the external shape of the materials and equipment, there may be cases where it is not possible to load any more materials and equipment onto the temporary elevator even if the maximum load weight of the temporary elevator has not been reached.

[0005] In this case, even though it would be possible to load other materials and equipment onto the temporary elevator in terms of weight, the temporary elevator would have to be operated, and the temporary elevator would not be able to transport materials and equipment efficiently.

[0006] For example, in the case of long materials and equipment that are not particularly heavy, even if the materials and equipment are loaded onto a temporary elevator, the maximum load capacity of the temporary elevator will not be reached.

[0007] However, for example, if the long equipment or materials are materials that cannot have other items placed on top of them, even if there is space left above the temporary elevator where the equipment or materials can be placed, it may not be possible to place other equipment or materials on top of the long equipment or materials, and so it may not be possible to load any more equipment or materials onto the temporary elevator.

[0008] Furthermore, if the equipment and materials have an external shape that makes them easy to stack, they can be placed on top of each other in the temporary elevator so that no wasted space is left. However, if the equipment and materials have an external shape that would cause the load to collapse if stacked, for safety reasons, even if there is space left above the temporary elevator where the equipment and materials can be placed, it may not be possible to place other equipment and materials in that empty space by stacking them.

[0009] In such cases, even though there is room in the temporary elevator in terms of weight and space to load other materials and equipment, the temporary elevator ends up being operated without any other materials and equipment loaded on it.

[0010] As a result, the temporary elevators will have to be operated more frequently, which increases the time required to transport materials and equipment.

[0011] The present disclosure has been made in consideration of the above circumstances, and aims to enable efficient use of elevators. [Means for solving the problem]

[0012] The lifting rack of the present disclosure is a lifting rack that is removably installed inside an elevator, and the lifting rack comprises a loading section, a lifting section that raises and lowers the loading section, and a guide section that guides the movement of the loading section in the lifting and lowering direction. [Effects of the Invention]

[0013] According to the present disclosure, elevators can be used efficiently. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a diagram showing a state in which a lifting rack set including a plurality of lifting racks according to a first embodiment of the present disclosure is installed in a lifting car of a temporary elevator. FIG. [Figure 2] FIG. 2 is a diagram showing a part of the elevator car in FIG. 1. [Figure 3] 1 is a diagram illustrating a loading section of a lifting rack according to a first embodiment of the present disclosure. [Figure 4] 1 is a diagram illustrating a portion of a lifting rack excluding a lifting unit according to a first embodiment of the present disclosure. [Figure 5] 1A and 1B are diagrams illustrating an example of a state in which a lifting rack and a lifting rack set according to a first embodiment of the present disclosure are used. [Figure 6] 10A and 10B are diagrams illustrating another example of the state in which the lifting rack and the lifting rack set according to the first embodiment of the present disclosure are used. [Figure 7] 10A and 10B are diagrams showing still another example of the state in which the lifting rack and the lifting rack set according to the first embodiment of the present disclosure are used. [Figure 8] FIG. 10 is a perspective view showing a guide portion of a second embodiment according to the present disclosure. [Figure 9] FIG. 10 is a side view showing a lifting rack according to a third embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, modes for carrying out the invention (hereinafter referred to as "embodiments") will be described in detail with reference to the accompanying drawings. It should be noted that the same elements are denoted by the same numbers or symbols throughout the description of the embodiments.

[0016] However, not all numbers or symbols are assigned to all drawings, and in consideration of ease of viewing the drawings, numbers or symbols may be omitted in some drawings.

[0017] <<First Embodiment>> A lifting rack LR and a lifting rack set LRS including a plurality of lifting racks LR according to a first embodiment of the present disclosure will be described with reference to FIGS. 1 to 7. FIG.

[0018] FIG. 1 is a diagram showing a state in which a lifting rack set LRS equipped with a plurality of lifting racks LR of the first embodiment of the present disclosure is installed in a lifting car EVC of a temporary elevator EV, and is a front view of the lifting car of the temporary elevator EV.

[0019] The temporary elevator EV in which the lift rack set LRS is installed may be any ordinary temporary elevator EV that is installed for transporting materials and equipment during construction work, etc., and the temporary elevator EV specifically described below is merely one example.

[0020] As shown in Figure 1, the temporary elevator EV comprises a car EVC with a pair of lattice-shaped retractable doors Dr on the front, a pair of support columns EVP on both sides of the car EVC to guide the lifting and lowering movement of the car EVC, and a lifting drive device (not shown) that raises and lowers the car EVC.

[0021] The temporary elevator EV is provided on one of the inner surfaces of the elevator car EVC (see the right side of FIG. 1), and is equipped with an operation panel EVOP for workers to operate the elevator car EVC.

[0022] Figure 2 shows the elevator car EVC part of Figure 1, and omits the pair of lattice-shaped retractable doors Dr on the front so that the elevator rack LR of the elevator rack set LRS can be seen more clearly.

[0023] <Lift rack set LRS> As shown in FIG. 2, the lifting rack set LRS includes a plurality of (two in this example) lifting racks LR arranged side by side.

[0024] The lift rack LR of this embodiment is removably installed in the temporary elevator EV (specifically, the lift car EVC), as will be described later.

[0025] As a result, the lifting rack set LRS, which is provided with a plurality of lifting racks LR, is also removably installed in the temporary elevator EV (more specifically, the lifting car EVC).

[0026] <Lift rack LR> As shown in FIG. 2, the lifting rack LR includes a loading section 1, a lifting section 2 that lifts and lowers the loading section 1, and a guide section 3 that guides the movement of the loading section 1 in the lifting and lowering direction.

[0027] [Loading section 1] FIG. 3 is a diagram showing the loading section 1 of the lift-up rack LR of the first embodiment according to the present disclosure, and is a front view seen from the same direction as FIG. FIG. 4 is a diagram showing the lifting rack LR excluding the lifting unit 2 of the first embodiment according to the present disclosure, and is a top view seen from above in FIG.

[0028] As shown in Figure 3, the loading section 1 includes a loading platform 11 and rollers 12 that are rotatably arranged relative to the loading platform 11 and are inserted into corresponding guide grooves 31 (see Figure 4) of the guide section 3 (see Figure 4).

[0029] As shown in Figure 4, the loading unit 1 is provided with a loading platform mounting portion 14 that is provided on the loading platform 11 and that mounts a corresponding chain block 21 (see Figure 2) described below to the loading platform 11, a storage recess 11a that is formed in the loading platform 11 and that accommodates the loading platform mounting portion 14, and a rotatable mounting portion 15 that is fixed within the storage recess 11a and that rotatably mounts the loading platform mounting portion 14 to the loading platform 11.

[0030] (Loading platform 11) As can be seen from Figures 3 and 4, the loading platform 11 is provided at both ends along the guide section 3 on the guide section 3 side, and has a pair of arms 13 extending from the top surface of the loading platform 11 upward in the lifting direction (upward and downward in Figure 3).

[0031] In this embodiment, the arm portion 13 extends upward in the lifting direction from the upper surface of the loading platform 11, but the arm portion 13 may also extend downward in the lifting direction from the lower surface of the loading platform 11.

[0032] In other words, the arm 13 only needs to extend from the upper or lower surface of the loading platform 11 in the lifting direction in which the surface faces.

[0033] However, if the arm 13 extends downward in the lifting direction from the underside of the loading platform 11, when the loading platform 11 is positioned at its lowest point, a gap equal to the height of the arm 13 will be created between the underside of the loading platform 11 and the floor of the temporary elevator EV (more specifically, the elevator car EVC), and the space available for placing equipment and materials inside the temporary elevator EV (more specifically, the elevator car EVC) will be correspondingly smaller.

[0034] On the other hand, since there is a chain block 21 (described later) on the upper side in the lifting direction, the loading platform 11 is not raised or lowered to a position where it comes into contact with the ceiling of the temporary elevator EV (more specifically, the elevator car EVC).

[0035] Therefore, regardless of whether the arm 13 is present or not, a gap of approximately the height of the arm 13 will be left between the top surface of the loading platform 11 and the ceiling of the temporary elevator EV (more specifically, the elevator car EVC).

[0036] Therefore, the presence of the arm 13 does not reduce the space available for arranging materials and equipment.

[0037] Furthermore, when materials and equipment are placed on the loading platform 11, a gap equal to the height of the materials and equipment is naturally required between the top surface of the loading platform 11 and the ceiling of the temporary elevator EV (more specifically, the elevator car EVC).

[0038] Therefore, from the viewpoint of making the most efficient use of the space inside the temporary elevator EV (more specifically, the elevator car EVC), it is preferable that the arm 13 extend from the top surface of the loading platform 11 upward in the lifting direction (the upward and downward direction in Figure 3).

[0039] Incidentally, when the loading platform 11 is installed on the temporary elevator EV (specifically, the elevator car EVC), the height of the loading platform 11 becomes one step higher than the floor of the temporary elevator EV (specifically, the elevator car EVC).

[0040] If there is such a step, when materials and equipment are being transported using a transport vehicle (including a cart) and the transport vehicle is to be loaded onto the loading platform 11, the step between the loading platform 11 and the floor of the temporary elevator EV (more specifically, the elevator car EVC) becomes an obstacle.

[0041] Therefore, the loading platform 11 may be provided on the building side (the side where materials and equipment are brought in) and may be provided with an inclined portion (slope) having an inclined surface that slopes downward toward the side where materials and equipment are brought in.

[0042] In this way, the transport vehicle can move smoothly onto the loading platform 11 without being hindered by the step.

[0043] On the other hand, if the temporary elevator EV (more specifically, the elevator car EVC) is stopped so that the floor of the building and the top surface of the loading platform 11 are aligned in the height direction, the above-mentioned step will be eliminated.

[0044] However, in this case, if materials and equipment are placed on the loading platform 11 and then the loading platform 11 is raised and lowered as described below in order to place other materials and equipment below the loading platform 11, a step will be created where the floor of the temporary elevator EV (more specifically, the elevator car EVC) is lower than the floor of the building.

[0045] Therefore, the loading section 1 may be installed on the floor of the building side (the side where materials and equipment are transported) of the temporary elevator EV (more specifically, the elevator car EVC), and may be equipped with an inclined member that forms a slope that slopes downward from the building side (the side where materials and equipment are transported) toward the floor of the temporary elevator EV (more specifically, the elevator car EVC).

[0046] In this case, if a slope that rises toward the building (the side where materials and equipment are brought in) is formed on the lower part of the loading platform 11 corresponding to the position where the inclined member is to be installed, and can be matched with the descending slope of the inclined member, there is no need to remove the inclined member when positioning the loading platform 11 on the floor of the temporary elevator EV (more specifically, the elevator car EVC).

[0047] Therefore, when the loading section 1 is equipped with a tilting member, it is preferable that the loading platform 11 has a tilting surface at the lower part corresponding to the position where the tilting member is installed that rises toward the building side (the side where equipment and materials are brought in) so that it can match the descending tilting surface of the tilting member.

[0048] (Laura 12) The rollers 12 are provided to enable smooth movement of the loading platform 11 in the up-down direction along the guide portion 3 (see FIG. 4).

[0049] 3, the roller 12 is provided rotatably relative to the arm portion 13 of the loading platform 11 in the outward direction (see FIG. 4) where the roller 12 is inserted into the guide groove 31 from the arm portion 13.

[0050] A plurality of rollers 12 (two in this example) are provided along the guide grooves 31 corresponding to the respective guide grooves 31, spaced apart in the lifting direction (the vertical direction in FIG. 3).

[0051] However, the rollers 12 may be provided one for each corresponding guide groove 31.

[0052] In this case, the arms 13 may not be provided, and the arms 13 may be provided directly on both ends of the loading platform 11 along the guide 3 on the guide 3 side.

[0053] However, as in this embodiment, when multiple guide grooves (two in this example) are provided along the guide groove 31 for each corresponding guide groove 31, spaced apart in the lifting and lowering direction (up and down direction in Figure 3), it is easier to keep the loading platform 11 stable and horizontal, which is preferable in terms of posture stability.

[0054] For example, in a configuration in which one roller 12 is provided for each corresponding guide groove 31, the loading platform 11 is connected to a chain block 21 (see Figure 2) as described below, so although the loading platform 11 does not immediately rotate in the vertical direction, there is an instability in that the loading platform 11 tends to move in the rotational direction.

[0055] On the other hand, as in this embodiment, multiple rollers 12 (two in this example) are provided along the guide groove 31 for each corresponding guide groove 31, spaced apart in the lifting direction (up and down direction in Figure 3), so that the cooperation between the guide groove 31 and the rollers 12 prevents the loading platform 11 from rotating in the up and down direction, and the loading platform 11 can be kept stable and horizontal.

[0056] (Loading platform mounting part 14) As shown in Figure 4, the loading platform mounting portion 14 has a typical eyebolt shape, but the male thread forming portion of a typical eyebolt has a simple cylindrical structure, and this cylindrical structure has a through hole formed therein for passing the pin 15a.

[0057] The through-hole that is formed has an inner diameter that is slightly larger than the outer diameter of the pin 15a, so that with the pin 15a inserted, the loading platform attachment portion 14 can rotate around the pin 15a.

[0058] The loading platform mounting portion 14 is fixed in the accommodation recess 11a by a pivot mounting portion 15, as will be described later.

[0059] (Rotating mounting part 15) The pivoting mounting portion 15 includes the pin 15a described above and a pair of fixing members 15b that fix both ends of the pin 15a protruding from the through hole to the loading platform 11 when the pin 15a is inserted into the through hole formed in the loading platform mounting portion 14.

[0060] Specifically, the portion where the fixing member 15b is fixed is recessed from the surface of the loading platform 11 so that it does not protrude from the loading platform 11, and the fixing member 15b is screwed to the loading platform 11 so that the end of the pin 15a is fixed to the loading platform 11.

[0061] As explained above, the loading platform mounting portion 14 can rotate around the pin 15a, and therefore, as shown in Figure 2, the loading platform mounting portion 14 rotates to an upright position only when the hook portion 21A at the end of the chain 21B of the chain block 21 described below is connected and the chain block 21 described below is attached to the loading platform 11.

[0062] On the other hand, when the loading platform mounting portion 14 is released from the connection with the hook portion 21A described below, the loading platform mounting portion 14 rotates by its own weight and enters a state of being housed in the housing recess 11a.

[0063] Therefore, when loading materials and equipment onto the temporary elevator EV (more specifically, the elevator car EVC) without raising the loading platform 11, the connection with the hook portion 21A described below can be released so that there is no protrusion on the top surface of the loading platform 11, making it easier to load materials and equipment.

[0064] [Lifting section 2] In this embodiment, as shown in FIG. 2, the lifting section 2 includes a chain block 21 and a ceiling mounting section 22 that is detachably mounted on the ceiling of the temporary elevator EV (more specifically, the elevator car EVC) and that mounts the chain block 21 to the ceiling of the temporary elevator EV (more specifically, the elevator car EVC).

[0065] Although not visible in Figure 2 due to the orientation of the illustration, the lifting section 2 is at the same position in the left-right direction (left-right direction on the paper in Figure 2) when the temporary elevator EV (more specifically, the lift car EVC) is viewed from the front, and is also equipped with a chain block 21 and a ceiling mounting section 22 at the back side in the depth direction (also referred to as the front-to-back direction on the paper in Figure 2) of the temporary elevator EV (more specifically, the lift car EVC).

[0066] In other words, the lifting section 2 of this embodiment comprises a plurality of (two in this example) chain blocks 21 arranged in the depth direction of the elevator car EVC, and a ceiling mounting section 22 arranged at intervals in the depth direction of the elevator car EVC and for mounting the corresponding chain blocks 21 to the ceiling of the temporary elevator EV (more specifically, the elevator car EVC).

[0067] (Chain Block 21) As shown in Figure 2, the chain block 21 comprises a chain 21B having a hook portion 21A, a main body portion 21C that incorporates a winding portion (not shown) around which the chain 21B is wound, and a main body hook portion 21D provided on the main body portion 21C.

[0068] The winding section is a structural part that utilizes the principle of leverage, and is a force-increasing mechanism made up of a combination of gears and pulleys.

[0069] The chain block 21 of this embodiment is a typical manual chain block and also has an operating chain that is manually operated to raise and lower the chain block 21, but in Figure 2, this operating chain for manual operation is not shown.

[0070] Furthermore, if a 100V power supply is provided using the power supplied to the control panel EVOP, an electric chain block can also be used as the chain block 21, so the chain block 21 is not limited to a manual chain block.

[0071] However, in the case of an electric chain block, the drive mechanism, including the drive motor, is quite heavy, so the weight of the materials and equipment that can be loaded onto the temporary elevator EV (more specifically, the elevator car EVC) is reduced accordingly.

[0072] For this reason, in terms of weight, the chain block 21 is preferably a manual chain block.

[0073] (Ceiling mounting part 22) In this embodiment, the ceiling mounting portion 22 uses an eyebolt that can be fastened with a bolt. However, the ceiling mounting portion 22 may be a doughnut-shaped member, and the doughnut-shaped member may be fixed to a ceiling beam or the like with a wire or the like.

[0074] In this way, in this embodiment, the ceiling mounting portion 22 is attached to the ceiling of the temporary elevator EV (more specifically, the elevator car EVC) as a donut-shaped member that is fixed with a boltable eyebolt, wire, etc., so that the elevator portion 2 can be removed from the temporary elevator EV (more specifically, the elevator car EVC) as needed.

[0075] [Guide part 3] As shown in FIG. 4, the guide section 3 has a plurality of guide grooves 31 that guide the loading section 1 in the lifting and lowering direction.

[0076] Specifically, the guide section 3 comprises a plate 3A having a plurality of (in this example, two) guide grooves 31 formed at a distance from one another, and a magnet 3B provided on a surface 3A1 of the plate 3A opposite the side on which the loading platform 11 is located.

[0077] (Plate 3A) As shown in Figure 4, plate 3A extends from both sides along the edge of loading platform 11 on the plate 3A side toward loading platform 11, then bends at approximately a right angle to form an L-shaped cross-section structure extending inward, thereby forming a pair of guide grooves 31 that open facing inward on both sides along the edge of loading platform 11 on the plate 3A side.

[0078] Then, when the rollers 12 of the loading section 1 are inserted into the guide grooves 31, the movement of the loading platform 11 in the direction away from the guide section 3 is restricted, and the movement of the loading section 1 in the lifting direction is guided.

[0079] (Magnet 3B) The magnet 3B is a member for fixing the guide part 3 to the rear wall behind a pair of lattice-shaped retractable doors Dr provided at the front of the temporary elevator EV (more specifically, the elevator car EVC).

[0080] In this embodiment, the guide portion 3 is installed on the back wall so that it can be removed using magnets 3B, but as will be explained later, it goes without saying that the wall on which it is installed does not have to be limited to the back wall.

[0081] Generally, the wall surface of the temporary elevator EV (more specifically, the elevator car EVC) is made of a magnetic metal material (for example, a metal containing iron), and therefore can be fixed by the magnet 3B.

[0082] A configuration for dealing with a case where the wall surface of the temporary elevator EV (more specifically, the elevator car EVC) is made of a material that is difficult to fix with the magnet 3B will be described later in another embodiment.

[0083] In this way, by fixing the guide section 3 to the temporary elevator EV (more specifically, the elevator car EVC) with the magnet 3B, in this embodiment, the loading section 1 and the guide section 3 can be removed from the temporary elevator EV (more specifically, the elevator car EVC) as needed.

[0084] As described above, the loading section 1, the lifting section 2, and the guide section 3 can all be removed as needed, so that the lifting rack LR and the lifting rack set LRS of this embodiment can be installed in a temporary elevator EV (more specifically, the lifting car EVC) in a removable manner.

[0085] Therefore, it can be easily installed inside an existing temporary elevator EV (more specifically, the elevator car EVC), and even in the case of a temporary elevator EV that is a rental item, after use, the elevator rack LR and elevator rack set LRS can be removed and the temporary elevator EV can be returned in the same condition as when the rental began.

[0086] Next, the usage state of the lifting rack LR and the lifting rack set LRS of this embodiment will be described with reference to FIGS.

[0087] FIG. 5 is a diagram showing an example of a usage state of the lifting rack LR and the lifting rack set LRS according to the first embodiment of the present disclosure.

[0088] FIG. 6 is a diagram showing another example of the state in which the lifting rack LR and the lifting rack set LRS of the first embodiment according to the present disclosure are used.

[0089] Furthermore, FIG. 7 is a diagram showing yet another example of the usage state of the lift-up rack LR and the lift-up rack set LRS according to the first embodiment of the present disclosure.

[0090] Note that Figures 5, 6, and 7 correspond to Figure 2, and for ease of viewing, some numbers or symbols have been omitted. Therefore, please refer primarily to Figure 2 for the numbers and symbols.

[0091] As shown in Figure 5, by operating the lifting unit 2 and raising or lowering the loading unit 1 upward, materials and equipment can be placed not only on the floor of the temporary elevator EV (more specifically, the lifting car EVC) where the lifting rack LR is installed, but also on the loading unit 1 (more specifically, the loading platform 11).

[0092] Furthermore, since the materials and equipment on the upper side are placed on the loading section 1 (more specifically, the loading platform 11), there is no need to place them in a pile on top of the materials and equipment placed below.

[0093] Therefore, even if other materials and equipment cannot be placed on top of the equipment, there is no need to place the equipment directly on top of it, so the space inside the temporary elevator EV (more specifically, the elevator car EVC) can be used effectively to load a large amount of materials and equipment onto the temporary elevator EV (more specifically, the elevator car EVC) at once.

[0094] Furthermore, since a large amount of equipment and materials can be loaded onto the temporary elevator EV (more specifically, the elevator car EVC) at once, the number of times the temporary elevator EV is operated can be reduced, thereby improving the efficiency of transporting equipment and materials.

[0095] Also, as shown in Figure 6, when it is necessary to load long equipment or materials, it is possible to use multiple (two in this example) lifting racks LR of the lifting rack set LRS to load the long equipment or materials.

[0096] Specifically, long equipment and materials are placed across the loading sections 1 (more specifically, loading platforms 11) of multiple (two in this example) lift-down racks LR, and the loading sections 1 (more specifically, loading platforms 11) of multiple (two in this example) lift-down racks LR are raised to the same height.

[0097] In this way, other materials and equipment can be placed on the floor of the temporary elevator EV (more specifically, the elevator car EVC).

[0098] Furthermore, as shown in Figure 7, when tall equipment and materials etc. and short equipment and materials etc. are loaded onto the temporary elevator EV (more specifically, the lifting car EVC) at the same time, the loading section 1 (more specifically, the loading platform 11) of one of the multiple (two in this example) lifting racks LR of the lifting rack set LRS is raised so that the short equipment and materials etc. can be loaded efficiently, and the loading section 1 (more specifically, the loading platform 11) of the remaining lifting rack LR is not raised so that the tall equipment and materials etc. can be loaded thereon.

[0099] Furthermore, as explained above, by disconnecting the loading platform mounting portion 14, which is rotatably mounted within the storage recess 11a formed in the loading platform 11, from the hook portion 21A at the end of the chain 21B of the chain block 21, the loading platform mounting portion 14 can be accommodated within the storage recess 11a, and there will be no structure protruding above the loading platform 11 (see Figure 7).

[0100] Therefore, as shown in Figure 7, when materials and equipment are placed on the loading section 1 (more specifically, the loading platform 11) of the lift-up rack LR without raising the loading section 1 (more specifically, the loading platform 11), the connection between the loading platform mounting section 14 and the hook section 21A of the lift-up rack LR can be released, making it easier to arrange the materials and equipment.

[0101] In addition, in the state shown in Figure 2, the system may be used in such a way that a person stands on the loading section 1 (more specifically, the loading platform 11), or in place of the tall equipment shown in Figure 7, a person may stand on the loading section 1 (more specifically, the loading platform 11) of the lifting rack LR on which the tall equipment is placed.

[0102] Although the lifting rack LR and the lifting rack set LRS of the first embodiment according to the present disclosure have been specifically described above, the present disclosure is not limited to the above disclosure.

[0103] For example, the widthwise length (left and right in Figure 2) of the loading section 1 (more specifically, the loading platform 11) of the lifting rack LR may be made longer than the combined length of the loading sections 1 (more specifically, the loading platforms 11) of multiple lifting racks LR, and only one lifting rack LR may be installed in an EV (more specifically, the lifting car EVC) so that it can be removed.

[0104] However, rather than installing a single lifting rack LR having a long width (left-right direction in Figure 2) of the loading section 1 (more specifically, the loading platform 11) in the temporary elevator EV (more specifically, the lifting car EVC), the lifting rack set LRS equipped with multiple lifting racks LR as described above provides a greater variety in the space formation that divides the temporary elevator EV (more specifically, the lifting car EVC).

[0105] Therefore, rather than using a single lifting rack LR that is long in the width direction (left and right direction in Figure 2) of the loading section 1 (more specifically, the loading platform 11), it is better to use a lifting rack set LRS that has multiple lifting racks LR, as this allows materials and equipment to be loaded onto the temporary elevator EV (more specifically, the lifting car EVC) in accordance with the external shape of the materials and equipment, leaving as little wasted space as possible.

[0106] For this reason, from the viewpoint of loading materials and equipment into the temporary elevator EV (more specifically, the elevator car EVC) so as to leave as little wasted space as possible, it is preferable to install an elevator rack set LRS equipped with multiple elevator racks LR inside the temporary elevator EV (more specifically, the elevator car EVC).

[0107] Furthermore, as described above, only one lifting rack LR may be removably installed in a temporary elevator EV (more specifically, a lifting car EVC) without changing the widthwise length (left-right direction in Figure 2) of the loading section 1 (more specifically, the loading platform 11) of the lifting rack LR.

[0108] For example, depending on the space available at the installation location, it may be desirable to install only one lifting rack LR in a removable manner within a temporary elevator EV (more specifically, a lifting car EVC) without changing the widthwise length (left-right direction in Figure 2) of the loading section 1 (more specifically, the loading platform 11) of the lifting rack LR.

[0109] Specifically, in the above embodiment, the guide section 3 was fixed to the relatively wide rear wall behind a pair of lattice-shaped retractable doors Dr provided at the front of the temporary elevator EV (more specifically, the elevator car EVC), but there are cases where the rear wall is also a door, that is, where the entrance and exit are located opposite each other.

[0110] In addition, there are cases where a control panel or the like is installed on the back wall, making it difficult to install the lift rack LR next to the back wall.

[0111] In such a case, rather than fixing the guide unit 3 to the rear wall, it is possible to install the lifting rack LR by fixing the guide unit 3 to the side wall on the side where the control panel EVOP (see Figure 2) is not installed, but in many cases the side wall is not as wide as the rear wall.

[0112] Therefore, in this case, without changing the widthwise length (left-right direction in Figure 2) of the loading section 1 (more specifically, the loading platform 11) of the lifting rack LR described so far, it is sufficient to install only one lifting rack LR removably on the side wall where the operation panel EVOP is not installed.

[0113] As described above, with the lifting rack LR of the first embodiment and the lifting rack set LRS equipped with multiple lifting racks LR, it is possible to load as much equipment and materials as possible into the temporary elevator EV (more specifically, the lifting car EVC) so as to minimize wasted space, and therefore it is possible to transport as much equipment and materials as possible at one time within the maximum load weight permitted by the temporary elevator EV. Therefore, the temporary elevator EV can be used efficiently.

[0114] <<Second embodiment>> Next, with reference to FIG. 8, a description will be given of a lifting rack LR and a lifting rack set LRS including a plurality of lifting racks LR according to a second embodiment of the present invention. FIG. 8 is a perspective view showing a guide portion 3 of the second embodiment according to the present disclosure.

[0115] In the second embodiment, the configurations of the lifting rack LR and the lifting rack set LRS are basically the same as those in the first embodiment, and the only difference from the first embodiment is the configuration of the guide portion 3 of the lifting rack LR.

[0116] Therefore, the following mainly describes the guide portion 3, which is a difference from the first embodiment, and a description of the same points as the first embodiment may be omitted.

[0117] In the first embodiment, in order to fix the guide part 3 to the rear wall behind a pair of lattice-shaped retractable doors Dr provided at the front of the temporary elevator EV (more specifically, the elevator car EVC), the guide part 3 was provided with a magnet 3B provided on the surface 3A1 of the plate 3A opposite the side where the loading platform 11 is located.

[0118] However, as described in the first embodiment, there are cases where the wall surfaces (side walls and rear wall surfaces) of the temporary elevator EV (more specifically, the elevator car EVC) are made of a material that is difficult to fix with the magnet 3B.

[0119] For example, if the wall surfaces (side walls and rear wall surfaces) of the temporary elevator EV (specifically, the elevator car EVC) are made of a material such as a paramagnetic or diamagnetic substance, it is difficult to fix them with the magnet 3B.

[0120] Therefore, as shown in FIG. 8, the guide portion 3 of the second embodiment does not include the magnet 3B provided on the plate 3A, but instead includes a support portion 3C that supports the plate 3A.

[0121] That is, the guide portion 3 of the second embodiment includes a plate 3A and a support portion 3C that supports the plate 3A.

[0122] As shown in Figure 8, the support portion 3C includes a gate-like support pillar 3C1 having a bridge portion connecting the upper sides of a pair of pillars, and a connection portion 3C2 connecting the center of the bridge portion to the upper center of the plate 3A.

[0123] Furthermore, the guide section 3 of the second embodiment is provided with a pair of ceiling-side mounting sections (not shown) that are fixed to the underside of the connection section 3C2, spaced apart in the longitudinal direction of the connection section 3C2, relative to the connection section 3C2 that will be located on the ceiling side of the temporary elevator EV (more specifically, the lift car EVC).

[0124] Specifically, the ceiling-side mounting portion (not shown) has the same role and component configuration as the ceiling mounting portion 22 of the first embodiment.

[0125] However, while the ceiling mounting portion 22 in the first embodiment is mounted on the ceiling of the temporary elevator EV (more specifically, the elevator car EVC), the ceiling side mounting portion (not shown) is mounted to the connection portion 3C2 located on the ceiling side, and is therefore arranged at a distance on the ceiling side of the temporary elevator EV (more specifically, the elevator car EVC), and the corresponding chain block 21 is mounted on the ceiling side of the temporary elevator EV (more specifically, the elevator car EVC).

[0126] The plate 3A, the support 3C1, and the connection part 3C2 are made up of separate parts, and the connection work is performed inside the temporary elevator EV (more specifically, the elevator car EVC), so they can be carried in and out as individual parts, making removal work etc. easy to carry out.

[0127] Furthermore, since the guide section 3 of the second embodiment is structurally self-supporting, it can be installed without being affected by the material of the wall surfaces (side walls and rear wall surfaces) of the temporary elevator EV (more specifically, the elevator car EVC).In addition, even a lifting rack LR equipped with such a guide section 3, and a lifting rack set LRS equipped with multiple lifting racks LR, can be used to load materials and equipment in the same way as in the first embodiment, so the temporary elevator EV can be used efficiently in the same way as in the first embodiment.

[0128] <<Third Embodiment>> Next, a third embodiment of a lifting rack LR according to the present invention and a lifting rack set LRS including a plurality of lifting racks LR will be described with reference to FIG. FIG. 9 is a side view showing a lift-up rack LR according to the third embodiment of the present disclosure.

[0129] As shown in Figure 9, the lifting rack LR of the third embodiment, like the first and second embodiments, also comprises a loading section 1, a lifting section 2 that raises and lowers the loading section 1, and a guide section 3 that guides the movement of the loading section 1 in the lifting and lowering direction.

[0130] However, there are some differences, such as the fact that the lifting section 2 is not a chain block 21, and the following mainly describes the differences from the first embodiment. Note that explanations of points that are the same as those in the first embodiment may be omitted.

[0131] As shown in FIG. 9, the loading section 1 of the third embodiment includes a movable section 16 provided on the guide section 3 and movable in the up-and-down direction, and a loading platform 11 provided on the movable section 16.

[0132] The surface of the guide part 3 on the movable part 16 side of the housing is provided with a linear slit (not shown) extending in the ascending / descending direction, which allows part of the movable part 16 to access the inside of the housing.

[0133] Furthermore, as shown in FIG. 9, the lifting section 2 of the third embodiment includes a motor 2A and a ball screw (not shown) as a drive mechanism provided within the guide section 3 (more specifically, the housing of the guide section 3) for moving the movable section 16 in the lifting direction.

[0134] The specific configuration of the ball screw (not shown) is similar to that of a general ball screw, and comprises a screw shaft (not shown) and a nut (not shown) attached to the screw shaft that moves in the extension direction of the screw shaft as the screw shaft rotates; when the screw shaft is rotated by motor 2A, the nut moves in the extension direction of the screw shaft (i.e., the up and down direction).

[0135] This nut (not shown) is fixed to the movable part 16, and the movement of the nut in the direction in which the screw shaft extends (that is, the vertical movement direction) causes the movable part 16 to move in the vertical movement direction.

[0136] However, since the movable part 16 fixed to the nut is also subjected to a rotational force due to the rotation of the screw shaft, the guide part 3 is provided with a linear guide inside (more specifically, inside the housing) that guides the movable part 16 in the ascending and descending direction so that the movable part 16 can move smoothly and linearly in the ascending and descending direction.

[0137] As a method for removably installing the lift rack LR of the third embodiment in the temporary elevator EV (more specifically, the lift car EVC), for example, a magnet may be provided at the bottom and fixed to the floor of the temporary elevator EV (more specifically, the lift car EVC) by magnetic force, or it may be fixed by a tension structure that reaches the ceiling of the temporary elevator EV (more specifically, the lift car EVC).

[0138] Furthermore, even when the lifting rack LR of the third embodiment and the lifting rack set LRS equipped with multiple lifting racks LR are used, materials and equipment can be loaded into the temporary elevator EV (more specifically, the lifting car EVC) in the same manner as in the first embodiment, so the temporary elevator EV can be used efficiently in the same manner as in the first embodiment.

[0139] Although the present disclosure has been described above based on specific embodiments, it should be understood that the present disclosure is not limited to the above embodiments.

[0140] The multiple lifting racks LR provided in the lifting rack set LRS do not have to be lifting racks LR of the same structure, and may, for example, be provided with multiple lifting racks LR by providing one lifting rack LR of the first embodiment and one lifting rack LR of the second embodiment.

[0141] In other words, the multiple lifting racks LR provided in the lifting rack set LRS may be formed by appropriately combining the lifting rack LR of the first embodiment, the lifting rack LR of the second embodiment, and the lifting rack LR of the third embodiment as needed to form the lifting rack set LRS.

[0142] Furthermore, the number of lifting racks LR provided in the lifting rack set LRS does not need to be limited to two, and the lifting rack set LRS may be provided with an appropriate number of lifting racks LR, taking into account the size of the temporary elevator EV (more specifically, the lifting car EVC) and the size of the lifting racks LR, etc.

[0143] As such, the present disclosure also encompasses modifications and improvements to the embodiments within its technical scope, which will be apparent to those skilled in the art from the claims. [Explanation of symbols]

[0144] 1 Loading portion, 11 Loading platform, 11a Storage recess, 12 Roller, 13 Arm, 14 Loading platform mounting portion, 15 Rotating mounting portion, 15a Pin, 15b Fixed member, 16 Movable portion, 2 Lifting portion, 21 Chain block, 21A Hook portion, 21B Chain, 21C Main body portion, 21D Main body hook portion, 22 Ceiling Mounting part, 2A···Motor, 3···Guide part, 31···Guide groove, 3A···Plate, 3A1···Surface, 3B···Magnet, 3C···Support part, 3C1···Support pillar, 3C2···Connection part, Dr···Extendable door, EV···Temporary elevator (elevator), EVC···Cab, EVP···Support pillar, EVOP···Operation panel, LR···Lifting rack, LRS···Lifting rack set

Claims

1. A lifting rack that is removably installed in an elevator, The lifting rack is A loading section; a lifting unit that lifts and lowers the loading unit; and a guide portion that guides the movement of the loading portion in the lifting direction.

2. The lifting unit includes a plurality of chain blocks, The lift rack according to claim 1, wherein the guide portions are provided at a distance from each other on the ceiling side of the elevator and each of the guide portions includes a ceiling-side mounting portion for mounting the corresponding chain block on the ceiling side of the elevator.

3. the guide portion includes a plurality of guide grooves that guide the loading portion in a lifting / lowering direction, The loading section is A loading platform and rollers rotatably provided on the loading platform and inserted into the corresponding guide grooves; The lift rack according to claim 2 , wherein a plurality of the rollers are provided on the loading platform at intervals along the guide grooves for each of the corresponding guide grooves.

4. The loading section is a loading platform mounting portion provided on the loading platform for mounting the corresponding chain block to the loading platform; an accommodation recess formed in the loading platform for accommodating the loading platform mounting portion; The lifting rack according to claim 3, further comprising a pivotal mounting portion fixed in the accommodation recess and configured to pivotally mount the loading platform mounting portion relative to the loading platform.

5. the loading section includes a movable section that is provided on the guide section and that is movable in a lifting direction, The lifting rack according to claim 1 , wherein the lifting section is provided on the guide section and includes a drive mechanism for moving the movable section in the lifting direction.

6. A lifting rack set that is removably installed in an elevator, The lifting rack set includes a plurality of lifting racks, A lifting rack set, wherein the lifting rack is selected from the lifting racks according to any one of claims 1 to 5.

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