Crane with electric hoist

Abstract

To provide technology that reduces CO2 emissions as a measure against global warming under the environment in which a crane with electric hoist is used.SOLUTION: A crane with electric hoist 100 comprises a structure 40 including an electric hoist 16 that moves a load up and down, a girder 10 provided with the structure 40, and a collection unit 60 that is fixed to the structure 40 and collects CO2 included in the atmosphere. The collection unit 60 includes a CO2 absorbent material 50 that absorbs and stores CO2 from the surrounding atmosphere.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a crane with an electric hoist. [Background technology]

[0002] Cranes with electric hoists that hoist, lower, and transport loads have been known for some time. A crane with an electric hoist has a hoist and a crane saddle. The hoist is equipped with an electric motor that drives a rope drum that winds and pays out a wire rope for hoisting and lowering the load. The crane saddle is a traveling device for transporting the load and is provided in pairs. Each crane saddle has wheels and an electric motor that drives the wheels.

[0003] Patent Documents 1 and 2 disclose a crane with an electric hoist that has a girder equipped with a walkway for inspecting the hoist. The hoist is suspended from the girder, and crane saddles are provided at both ends of the girder. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5814722 [Patent Document 2] Patent No. 6694843 Summary of the Invention [Problem to be solved by the invention]

[0005] In environments where such cranes with electric hoists are used, there is a desire to reduce CO2 emissions as a measure against global warming. [Means for solving the problem]

[0006] In one embodiment, the electric hoist crane includes a structure including an electric hoist that moves a load up and down, a girder on which the structure is mounted, and a capture unit fixed to the structure and configured to capture CO2 contained in the atmosphere. The capture unit includes a CO2 adsorbent that absorbs and stores CO2 contained in the surrounding atmosphere. [Effects of the Invention]

[0007] According to the present invention, CO2 around the electric hoist crane can be collected, and by appropriately processing the collected CO2, it is possible to contribute to the suppression of global warming. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is an external perspective view of a crane with an electric hoist. [Figure 2] FIG. 2 is an external perspective view of a collection unit according to the first embodiment. [Figure 3] FIG. 2 is an exploded perspective view of a collection section of the first embodiment. [Figure 4] FIG. 10 is an external perspective view of a crane with an electric hoist according to a first modified example. [Figure 5] FIG. 10 is an external perspective view of a crane with an electric hoist according to a second modified example. [Figure 6A] FIG. 11 is an external perspective view showing an enlarged view of a part of the case of a third modified example. [Figure 6B] FIG. 11 is an external perspective view showing an enlarged view of a part of a case of another example of the third modified example. [Figure 7] FIG. 10 is an external perspective view of a collection unit according to a second embodiment. [Figure 8] FIG. 10 is an exploded perspective view of a collection section of the second embodiment. [Figure 9] FIG. 11 is an external perspective view of a collection unit according to a third embodiment. [Figure 10] FIG. 11 is an exploded perspective view of a collection section of the third embodiment. [Figure 11] FIG. 11 is an external perspective view of a collection unit of a fourth modified example. [Figure 12] FIG. 11 is an exploded perspective view of a collection section of a fourth modified example. DETAILED DESCRIPTION OF THE INVENTION

[0009] First Embodiment Hereinafter, a crane with an electric hoist according to a first embodiment of the present invention will be described in detail with reference to the drawings.

[0010] <Overall structure> FIG. 1 is an exterior side view of an electric hoist crane 100 of a first embodiment. The electric hoist crane 100 is installed in a building. As shown in FIG. 1, the electric hoist crane 100 includes a girder 10, a first traveling rail 11, an electric hoist 16, a crane saddle 20, a structure 40, and a recovery unit 60. In the following description, as shown in FIG. 1, the direction in which the girder 10 extends, which will be described in detail later, is defined as the X direction. Furthermore, the direction in which the first traveling rail 11 extends, which will be described in detail later, and which intersects (is perpendicular to) the X direction is defined as the Y direction. The direction that intersects (is perpendicular to) the X direction and the Y direction is defined as the Z direction.

[0011] <First running rail 11> The first traveling rails 11 are provided on structural members such as pillars of a building. The first traveling rails 11 are made up of a pair of first traveling rails 11a and 11b arranged opposite each other inside the building. The first traveling rails 11a and 11b extend parallel or approximately parallel to each other in the Y direction.

[0012] <Crane Saddle 20> The crane saddle 20 is provided so as to be able to travel on the first traveling rail 11. Specifically, the crane saddle 20 is composed of a crane saddle 20a provided so as to be able to travel on the first traveling rail 11a, and a crane saddle 20b provided so as to be able to travel on the first traveling rail 11b. In other words, the pair of crane saddles 20a, 20b are arranged so as to be able to travel on the pair of first traveling rails 11a, 11b. This allows the crane saddle 20 to travel along the Y direction, which is the direction in which the first traveling rail 11 extends. The traveling operation of the crane saddle 20 is controlled by a saddle control unit 12. The saddle control unit 12 is provided on the girder 10, which will be described later.

[0013] The crane saddle 20a has a saddle frame 21a and a first traveling mechanism 121a. The saddle frame 21a has a long side extending along the Y direction. The saddle frame 21a supports the first traveling mechanism 121a.

[0014] The first traveling mechanism 121a has a traveling drive wheel 25a and a traveling driven wheel 26a installed on the first traveling rail 11a, and an electric motor (motor) that rotates and drives the traveling drive wheel 25a. The traveling drive wheel 25a is rotatably supported via an axle 27a near one end of the saddle frame 21a in the Y direction. The traveling driven wheel 26a is rotatably supported via an axle 28a near the other end of the saddle frame 21a in the Y direction. In the following description, the side of the Y direction where the traveling driven wheel 26a is provided is referred to as the +Y side, and the side where the traveling drive wheel 25a is provided is referred to as the -Y side.

[0015] The crane saddle 20b has a saddle frame 21b and a first traveling mechanism 121b. The saddle frame 21b has a long side extending along the Y direction. The saddle frame 21b supports the first traveling mechanism 121b.

[0016] The first traveling mechanism 121b has a traveling drive wheel 25b and a traveling driven wheel 26b installed on the first traveling rail 11b, and an electric motor (motor) that rotates and drives the traveling drive wheel 25b. The traveling drive wheel 25b is rotatably supported via an axle 27b near the end of the saddle frame 21b on the negative side in the Y direction. The traveling driven wheel 26b is rotatably supported via an axle 28b near the end of the saddle frame 21b on the positive side in the Y direction.

[0017] <Girder 10> The girder 10 extends in the X direction, i.e., in a direction intersecting the Y direction in which the first traveling rail 11 extends. The girder 10 is connected to a crane saddle 20a at one end in the X direction and to a crane saddle 20b at the other end in the X direction. Because the girder 10 is connected to the crane saddle 20a, the girder 10 is arranged so as to be movable along the Y direction in which the first traveling rail 11 extends.

[0018] In the following description, the side of the X direction where the crane saddle 20a is provided is referred to as the positive X side, and the side where the crane saddle 20b is provided is referred to as the negative X side.

[0019] The girder 10 is provided with a saddle control section 12, a second traveling rail 13, and a structure 40. An electric hoist 16 is provided on the girder 10 so as to be able to travel on the second traveling rail 13. That is, the structure 40 includes the electric hoist 16. The girder 10 is connected to the electric hoist 16.

[0020] <Second running rail 13> The second traveling rail 13 is a rail along which an electric hoist 16 (described later) travels, and is connected to the girder 10. The second traveling rail 13 is composed of second traveling rails 13a and 13b that are arranged opposite each other in a pair on the girder 10. The second traveling rails 13a and 13b extend parallel or approximately parallel to each other in the X direction.

[0021] <Saddle control unit 12> The saddle control unit 12 controls the movement of the crane saddle 20 described above. Specifically, the saddle control unit 12 outputs drive signals that indicate the direction and amount of rotation of the electric motors of the first traveling mechanisms 121a, 121b, based on a control signal output from an operation input device 3 of the electric hoist 16 described below. This causes the traveling drive wheels 25a, 25b to rotate, and the crane saddle 20 moves to the + side in the Y direction or the - side in the Y direction on the first traveling rail 11. As the crane saddle 20 moves, the girder 10 connected to the crane saddle 20 moves to the + side in the Y direction or the - side in the Y direction.

[0022] 1 shows the saddle control unit 12 disposed on the wall surface on the +Y direction side of the girder 10. However, the saddle control unit 12 is not limited to being disposed in the position shown in the figure, and may be disposed on the wall surface on the -Y direction side of the girder 10, for example.

[0023] <Structure 40> The structure 40 is provided on the above-mentioned girder 10. The structure 40 includes an electric hoist 16, a walkway 51, and a handrail 52.

[0024] <Electric hoist 16> As described above, the electric hoist 16 is disposed on the girder 10. Therefore, the electric hoist 16 can move in the Y direction together with the girder 10 in response to movement of the girder 10 along the Y direction. In addition, the electric hoist 16 can move relatively in the X direction on the second traveling rail 13.

[0025] The electric hoist 16 has a hoist 1, an operation input device 3, a crane hook 4, a hoist control unit 5, and a hoist frame 6. The hoist 1 is mounted on the hoist frame 6. The hoist 1 has, for example, an electric motor, a reducer, a drum around which a wire rope is wound, etc. One end of the wire rope is provided with a crane hook 4 for suspending a load.

[0026] The hoist frame 6 supports second traveling mechanisms 2a and 2b that cause the electric hoist 16 to travel on the second traveling rail 13. The second traveling mechanism 2a has a traveling drive wheel 14a arranged on the second traveling rail 13a, a traveling drive wheel 14b arranged on the second traveling rail 13b, and an electric motor that rotationally drives the traveling drive wheels 14a and 14b.

[0027] The traveling drive wheels 14a, 14b are rotatably supported on the hoist frame 6 via an axle 17a on the negative side in the X direction. The traveling drive wheels 14a, 14b are rotationally driven by an electric motor mounted on the hoist frame 6.

[0028] The second traveling mechanism 2b has a traveling driven wheel 15a arranged on the second traveling rail 13a and a traveling driven wheel 15b arranged on the second traveling rail 13b. The traveling driven wheels 15a and 15b are rotatably supported on the hoisting machine frame 6 via an axle 17b on the positive side in the X direction.

[0029] As a result, when the second running mechanisms 2a, 2b move on the second running rail 13, the hoisting machine frame 6 supporting the second running mechanisms 2a, 2b and the hoisting machine 1 mounted on the hoisting machine frame 6 can move along the X direction.

[0030] The hoist control unit 5 controls the operations of the hoist 1 and the second traveling mechanisms 2a, 2b in response to an operator's operation of the operation input device 3. Specifically, the hoist control unit 5 outputs a drive signal that indicates the direction and amount of rotation of the electric motor of the first traveling mechanism 2a in response to the operation of the operation input device 3. This causes the traveling drive wheels 14a, 14b to rotate, and the electric hoist 16 moves on the second traveling rail 13 to the +X side or the -X side.

[0031] The operation input device 3 accepts operations by an operator to operate the crane with electric hoist 100. The operation input device 3 outputs a control signal to the hoist control unit 5 or the saddle control unit 12 in accordance with the operation performed by the operator. The operations that can be controlled by the operation input device 3 include movement of the crane hook 4 and the suspended load along the X direction, movement along the Y direction, and movement along the Z direction. In the Z direction, the side where the crane hook 4 approaches the hoist 1 is defined as the +Z direction side, and the side where the crane hook 4 moves away from the hoist 1 is defined as the -Z direction side.

[0032] The operation of the crane 100 with electric hoist in response to the operation input device 3 is as follows. When the operator operates to move along the X direction, the operation input device 3 outputs a control signal to the hoisting machine control unit 5. Based on the input control signal, the hoisting machine control unit 5 causes the second traveling mechanisms 2a, 2b to travel on the second traveling rail 13 toward the +X side or the -X side in the X direction. As a result, the hoisting machine 1 moves toward the +X side or the -X side together with the second traveling mechanisms 2a, 2b, and therefore the crane hook 4 and the suspended load move toward the +X side or the -X side in the X direction.

[0033] When the operator operates to move along the Y direction, the operation input device 3 outputs a control signal to the saddle control unit 12. Based on the input control signal, the saddle control unit 12 causes the first traveling mechanisms 121a, 121b of the crane saddle 20 to travel on the first traveling rails 11 toward the + side in the Y direction or the - side in the Y direction. As a result, the girder 10 connected to the crane saddle 20 and the electric hoist 16 arranged on the girder 10 move toward the + side in the Y direction or the - side in the Y direction. As a result, the crane hook 4 and the suspended load move toward the + side in the Y direction or the - side in the Y direction.

[0034] When the operator operates to move along the Z direction, the operation input device 3 outputs a control signal to the hoisting machine control unit 5. The hoisting machine control unit 5 drives the electric motor of the hoisting machine 1 based on the input control signal. This causes the drum of the hoisting machine 1 to rotate, and the wire hook attached to the drum is wound up or let out, so that the crane hook 4 and the suspended load move to the + side or - side of the Z direction. In other words, the load (suspended load) is moved up and down by the electric hoisting machine 16.

[0035] <Sidewalk 51> The walkway 51 is a passageway through which workers walk when performing maintenance, inspection, etc. on the electric hoist 16. The walkway 51 is arranged along the side wall surface of the girder 10. Therefore, the walkway 51 extends along the X direction. In the Y direction, the walkway 51 only needs to have a width sufficient for workers to pass through. Note that the example shown in FIG. 1 shows a case in which the walkway 51 is provided on the side wall surface on the negative side in the Y direction of the girder 10.

[0036] <Handrail 52> The handrail 52 is provided on the walkway 51 to prevent workers from falling, etc. The handrail 52 is provided along the X direction in the Y direction (width direction of the walkway 51) on the side of the walkway 51 that is not in contact with the girder 10 (i.e., the negative side in the Y direction).

[0037] The handrail 52 has multiple posts 521 and a beam 522. The multiple posts 521 extend from the upper surface (the surface on the positive side in the Z direction) of the walkway 51 to the positive side in the Z direction. The multiple posts 521 are arranged at predetermined intervals along the X direction near the end of the walkway 51 on the negative side in the Y direction. The beam 522 extends in the X direction and is fixed to bridge over the upper ends (ends on the positive side in the Z direction) of the multiple posts 521. The length from the surface on the positive side in the Z direction of the walkway 51 to the beam 522, i.e., the height of the handrail 52 in the Z direction, is, for example, 90 cm or more. A collection unit 60, the details of which will be described later, is provided on the handrail 52.

[0038] <Collection Section 60> The recovery unit 60 is fixed to the handrail 52 which is the structure 40. The recovery unit 60 recovers CO2 contained in the atmosphere around the crane 100 with an electric hoist. As shown in FIG. 1, a plurality of recovery units 60 are provided in a range R1 along the X direction in which the handrail 52 extends. Note that the plurality of recovery units 60 are not limited to being provided over the entire range R1 shown in FIG.  1, and may be provided in a part of the range R1. Alternatively, one recovery unit 60 may be provided in the range R1 of the handrail 52.

[0039] The above range R1 to which the recovery unit 60 is fixed is a rectangular surface intersecting (orthogonal) with the Y direction, with the long side along the X direction and the short side along the Z direction. For this reason, the range R1 is located on the flow path of the air flow generated when the crane saddle 20 travels on the first traveling rail 11 and the crane 100 with an electric hoist moves along the Y direction. In other words, the recovery unit 60 is arranged on the flow path of the air flow generated by the traveling of the crane saddle 20.

[0040] As shown in FIG. 1, the recovery unit 60 is arranged on the Y-direction side with respect to the sidewalk 51 and the handrail 52, that is, outside the sidewalk 51 and the handrail 52. The recovery unit 60 arranged on the handrail 52 as described above includes a CO2 adsorbent 50 and a case 53 that detachably supports the CO2 adsorbent 50.

[0041] <CO2 adsorbent 50> The CO2 adsorbent 50 is fixed to the handrail 52 in a state of being housed in the case 53. The CO2 adsorbent 50 is processed into a filter shape in which an adsorbent substance processed into a powder or granular form is enclosed in a breathable pack, and absorbs and stores (adsorbs) CO2 contained in the surrounding atmosphere. As an example of the adsorbent substance of the CO2 adsorbent 50, those that perform physical adsorption using zeolite or activated carbon, which are currently mainstream as carbon dioxide recovery and separation materials, can be mentioned. Further, as other examples of the adsorbent substance, those that perform chemical adsorption and absorption using an amine-supported inorganic porous body, supported activated carbon, etc., and chemical absorption carbonate systems such as Ca looping can be mentioned. However, the adsorbent substance and the adsorption method of the CO2 adsorbent 50 are not limited to the above.

[0042] <Case 53> FIG. 2 is an external perspective view of the capture unit 60, specifically an external perspective view of the CO2 adsorbent 50 and the case 53. FIG. 3 is an exploded perspective view of the capture unit 60, specifically an exploded perspective view of the CO2 adsorbent 50 and the case 53. Note that in FIGS. 2 and 3, the X, Y, and Z directions are set in the same directions as the X, Y, and Z directions set in FIG. 1. FIG. 3 also shows a case where two CO2 adsorbents 50 are housed in the case 53. However, the number of CO2 adsorbents 50 housed in the case 53 is not limited to the above and may be one, or three or more.

[0043] The case 53 has a case body 530, a cover 54, and a mounting bracket 59. The case body 530 is a rectangular tube with its long sides in the Z direction and an opening 531 formed at its upper end on the positive side in the Z direction. The CO2 adsorbent 50 described above is housed in the case body 530 in a removable manner. In other words, the case 53 supports the CO2 adsorbent 50 in a removable manner.

[0044] Specifically, the case main body 530 is composed of side surfaces 532 and 533, a bottom surface 534, and surface surfaces 535 and 536. The side surfaces 532 and 533 have long sides along the Z direction and are rectangular plates parallel to the YZ plane. A screw hole (internal thread) 538 is formed near the end of each of the side surfaces 532 and 533 on the positive side in the Z direction.

[0045] The bottom surface portion 534 has a long side along the X direction and is a rectangular plate parallel to the XY plane. The positive end of the bottom surface portion 534 in the X direction is connected to the negative end of the side surface portion 532 in the Z direction. The negative end of the bottom surface portion 534 in the X direction is connected to the negative end of the side surface portion 533 in the Z direction.

[0046] The surface portion 535 is connected to the ends of the side portions 532, 533 and the bottom portion 534 on the +Y side. The surface portion 536 is connected to the ends of the side portions 532, 533 and the bottom portion 534 on the -Y side. A plurality of rectangular openings 537 are formed in each of the surface portions 535, 536. Figures 2 and 3 show a case where three openings 537 are formed along the X direction and three openings 537 are formed along the Z direction. The number of openings 537 is not limited to the above.

[0047] An air flow generated by the travel of the crane saddle 20 reaches the inside of the case main body 530 through the opening 537. That is, CO2 contained in the atmosphere around the electric hoist-equipped crane 100 reaches the CO2 adsorbent 50 housed inside the case main body 530 through the opening 537 and is adsorbed by the CO2 adsorbent 50.

[0048] An opening 531 at the upper end of the case body 530 is an area surrounded by the positive Z-direction ends of the side portions 532 and 533 and the positive Z-direction ends of the surface portions 535 and 536. This opening 531 is an area through which the CO2 adsorbent 50 passes when the CO2 adsorbent 50 is inserted into or removed from the case body 530.

[0049] The cover 54 is attached to the positive end of the case body 530 in the Z direction and covers the opening 531. The cover 54 is a rectangular plate having short sides corresponding to the lengths of the side portions 532 and 533 in the Y direction and long sides corresponding to the lengths of the surface portions 535 and 536 in the X direction. Mounting bases 541 are provided at the positive and negative ends of the cover 54 in the X direction, respectively. The mounting bases 541 are plate-shaped members extending toward the negative side in the Z direction, and have round holes 542 formed therein.

[0050] The cover 54 is detachably fixed to the end of the case body 530 on the positive side in the Z direction by a male screw 55. Specifically, the male screw 55 is inserted into a round hole 542 formed in the mounting base 541 and fastened to a female screw 538 formed in the side surface portions 532 and 533, thereby fixing the cover 54 to the case body 530.

[0051] The CO2 adsorbent 50 can be inserted into and removed from the case body 530 when the male screw 55 and the female screw 538 are released and the cover 54 is removed from the case body 530. When the CO2 adsorbent 50 is inserted into the case body 530, the CO2 adsorbent 50 is moved in the direction of arrow AR1 shown in FIG. 3 , passes through the opening 531, and is housed in the case body 530. When the CO2 adsorbent 50 is removed from the case body 530, the CO2 adsorbent 50 is moved in the direction of arrow AR2 shown in FIG. 3 , passes through the opening 531, and is removed to the outside of the case body 530. In this way, the CO2 adsorbent 50 is detachably supported in the case 53.

[0052] The mounting brackets 59 are attached near the ends of the side surfaces 532, 533 on the positive side in the Z direction. The mounting brackets 59 are plate-shaped members attached so as to protrude further in the positive Y direction than the side surfaces 532, 533. A notch 590 corresponding to the shape of the beam 522 of the handrail 52 is formed on the negative Z direction side of the portion of the mounting bracket 59 that protrudes further in the positive Y direction than the side surfaces 532, 533. The case 53 is attached to the handrail 52 by hooking the mounting bracket 59 onto the handrail 52 so that the beam 522 of the handrail 52 is accommodated in the notch 590 formed in the mounting bracket 59. The mounting brackets 59 are fixed to the side surfaces 532, 533 by a suitable method such as welding, riveting, or screwing after being aligned according to the height of the handrail 52 from the walkway 51.

[0053] When the case body 530 is attached to the handrail 52 with the mounting brackets 59, the surface portions 535, 536 become surfaces parallel to the ZX plane. That is, the surface portions 535, 536 are positioned in the flow path of the airflow generated by the travel of the crane saddle 20, intersecting (orthogonal to) the Y direction, which is the travel direction of the crane saddle 20. Therefore, the adsorption surface of the CO2 adsorbent 50 housed in the case body 530 intersects (orthogonal to) the Y direction in which the crane saddle 20 moves. As a result, as the crane saddle 20 travels, it is possible to increase the air flow rate to the CO2 adsorbent 50 in the case body 530 through the opening 537.

[0054] <Replacement of the CO2 adsorbent 50> The replacement of the CO2 adsorbent 50 is carried out at predetermined time intervals. In this case, before the replacement, the installation volume of the CO2 adsorbent 50 is determined so that the adsorbable capacity of the CO2 adsorbent 50 is filled and no non-adsorbable CO2 occurs. Specifically, the installation volume of the CO2 adsorbent 50 is determined so that the relationship of adsorption amount until replacement ≥ adsorption rate × movable time until replacement is satisfied.

[0055] It is assumed that the replacement of the CO2 adsorbent 50 is carried out during the legally required monthly inspection of the electric hoist 16 and the crane saddle 20. More specifically, it is assumed that the replacement of the CO2 adsorbent 50 is carried out monthly. In this case, the amount of CO2 adsorbed by the CO2 adsorbent 50 is CO2 adsorption amount (gCO2 / month / unit) = installation volume (m 3 ) × adsorbent density (kg / m 3 ) × adsorption rate (gCO2 / kg / h) × monthly movable time (h) and is expressed as follows.

[0056] Also, it is assumed that the replacement of the CO2 adsorbent 50 is carried out at an arbitrary timing regardless of the above-mentioned monthly inspection. In this case, the amount of CO2 adsorbed by the CO2 adsorbent 50 is CO2 adsorption amount (gCO2 / month / unit) = installation volume (m 3 ) × adsorbent density (kg / m 3 ) × adsorption rate (gCO2 / kg / h) × monthly movable time (h) × number of replacements (times / month) and is expressed as follows. Or, the amount of CO2 adsorbed is CO2 adsorption amount (gCO2 / year / unit) = installation volume (m 3 ) × adsorbent density (kg / m 3 ) × adsorption rate (gCO2 / kg / h) × monthly movable time (h) × number of replacements (times / year) and is expressed as follows.

[0057] Here, when the installation volume is 1 [m 3 , the adsorbent density is 869 [kg / m 3 , and the adsorption rate is 240 [gCO2 / kg / h] for the CO2 adsorbent 50, the annual adsorption amount of CO2 is 2.6 [gCO2 / year / unit].

[0058] According to the first embodiment described above, at least one of the following advantageous effects can be obtained. (1) The electric hoist crane 100 comprises a structure 40 including an electric hoist 16 that moves a load up and down, a girder 10 on which the structure 40 is mounted, and a capture unit 60 that is fixed to the structure 40 and captures CO2 contained in the atmosphere. The capture unit 60 includes a CO2 adsorbent 50 that absorbs and stores CO2 contained in the surrounding atmosphere. This allows the CO2 present in the atmosphere around the electric hoist crane 100 to be adsorbed.

[0059] Because an electric motor is used to drive the electric hoist 16 and the crane saddle 20, the operation of the electric hoist crane 100 itself does not emit CO2. However, because CO2 is emitted at the power plant that supplies electricity when electricity is supplied to the electric motor, it can also be said that CO2 is indirectly emitted by the electric hoist crane 100. In this embodiment, CO2 is adsorbed from around the electric hoist crane 100 as described above, so it is possible to reduce CO2 emissions resulting from the supply of electricity to the electric motor, i.e., the operation of the electric hoist crane 100. As a result, this contributes to carbon neutrality and the prevention of global warming.

[0060] (2) The CO2 adsorbent 50 is a filter, enclosed in a breathable pack, and placed in the flow path of the airflow generated by the travel of the crane saddle 20. As a result, an airflow is generated by the travel of the girder 10, and the air around the crane 100 with the electric hoist can be ventilated through the CO2 adsorbent 50 without stagnating. As a result, CO2 in the atmosphere can be efficiently adsorbed as the girder 10 travels.

[0061] (3) The capture unit 60 is fixed to a handrail 52 provided on the structure 40. This allows a wider area to be secured for the capture unit 60 to be installed, and the amount of CO2 adsorption can be increased compared to when the capture unit 60 is placed in another position.

[0062] (4) The capture unit 60 has a case 53 that detachably supports the CO2 adsorbent 50. This makes it possible to capture the CO2 adsorbent 50 that has adsorbed CO2 and replace it with a new CO2 adsorbent 50. As a result, by replacing the CO2 adsorbent 50, it is possible to maintain a state in which CO2 can be adsorbed. Furthermore, by appropriately processing the captured CO2 adsorbent 50, an increase in CO2 can be suppressed, which contributes to the suppression of global warming.

[0063] (5) The case 53 has a case body 530 that houses the CO2 adsorbent 50 therein, an opening 531 provided in the case body 530, and a cover 54 that covers the opening 531. The cover 54 is detachably attached to the case body 530 with screws 55. When the cover 54 is removed from the case body 530, the CO2 adsorbent 50 passes through the opening 531 and becomes insertable and removable from the case body 530. This allows the cover 54 to be attached and detached with a simple configuration, facilitating insertion and removal of the CO2 adsorbent 50 from the case body 530, i.e., replacement of the CO2 adsorbent 50. Furthermore, because the cover 54 is fixed to the case body 530 with the screws 55, it is possible to prevent the cover 54 from unintentionally coming off and the CO2 adsorbent 50 from falling off the case 53 due to vibrations or the like caused by the electric hoist-equipped crane 100 traveling.

[0064] <First Modification> In the first embodiment, the recovery unit 60 has been described as being disposed on the negative side in the Y direction with respect to the walkway 51 and the handrail 52, but the location of the recovery unit 60 is not limited to this example. Fig. 4 is an external perspective view of the electric hoist-equipped crane 100 in the first modified example. As shown in Fig. 4, the recovery unit 60 may be disposed on the positive side in the Y direction with respect to the walkway 51 and the handrail 52, that is, on the inside of the walkway 51 and the handrail 52. Even in this case, it is possible to obtain the same effects as the effects (1) to (5) obtained by the first embodiment described above.

[0065] <Second Modification> In the first embodiment and the first modified example, the recovery unit 60 has been described as being arranged on the handrail 52, which is the structure 40, but the recovery unit 60 may also be arranged on another member of the structure 40. Fig. 5 is an external perspective view of the electric hoist-equipped crane 100 in the second modified example. Fig. 5 shows a case where the recovery unit 60 is fixed to the hoist frame 6 of the electric hoist 16 included in the structure 40.

[0066] In the second modified example, the recovery unit 60 is fixed to the positive side of the hoist frame 6 in the X direction. In this case, the surface portions 535, 536 constituting the case 53 of the recovery unit 60 are fixed so as to be parallel to the YZ plane. That is, the surface portions 535, 536 intersect (are perpendicular to) the X direction, which is the traveling direction of the electric hoist 16. This makes it possible to orthogonalize the adsorption surface of the CO2 adsorbent 50 housed in the case main body 530 to the direction in which the electric hoist 16 moves. In other words, the CO2 adsorbent 50 housed in the case main body 530 of the recovery unit 60 is disposed in the flow path of the airflow generated by the movement of the electric hoist 16 along the X direction. As a result, it is possible to increase the airflow rate to the CO2 adsorbent 50 in the case main body 530 as the electric hoist 16 moves.

[0067] Even in this case, in addition to the effects (1), (4), and (5) obtained by the first embodiment described above, the following effects can be obtained.

[0068] (6) The recovery unit 60 is fixed to the hoist frame 6 of the electric hoist 16 and is arranged in the flow path of the airflow generated by the movement of the electric hoist 16. As a result, an airflow is generated by the movement of the electric hoist 16, and the air around the crane with electric hoist 100 can be ventilated to the CO2 adsorbent 50 without stagnating. As a result, CO2 in the atmosphere can be efficiently adsorbed as the electric hoist 16 moves.

[0069] 5 shows the case where the recovery unit 60 is arranged on the + side in the X direction of the hoist frame 6, but the recovery unit 60 may also be arranged on the - side in the X direction of the hoist frame 6. Alternatively, the recovery unit 60 may be arranged on both the + side and the - side in the X direction of the hoist frame 6. Furthermore, the recovery unit 60 may also be arranged on the hoist frame 6 and the handrail 52 as in the first embodiment or first modified example.

[0070] <Third Modification> Mounting bracket 59 of case 53 may be attached to case main body 530 so that its position can be changed along the Z direction. Fig. 6A is an external perspective view of case 53 in a third modified example. As shown in Fig. 6A, a plurality of screw holes (female threads) 591 are formed in side portions 532, 533 along the Z direction. Mounting bracket 59 has circular mounting holes formed therein.

[0071] The mounting bracket 59 is detachably fixed by a male screw 592 that is fastened to one of a plurality of female screws 591 formed along the Z direction. Specifically, the male screw 592 inserted into the mounting hole of the mounting bracket 59 is fastened to the female screw 591 provided at an appropriate position depending on the height of the handrail 52 from the walkway 51. In this way, the mounting bracket 59 is fixed to the case main body 530. As a result, by changing the female screw 591 that is fastened to the male screw 592 among the plurality of female screws 591, the position of the mounting bracket 59 can be changed along the Z direction.

[0072] 6B may be formed in the side surface portions 532, 533 instead of the female thread 591 shown in FIG. 6A. In this case, the female hole 593 is formed with a long axis along the Z direction. The mounting bracket 59 is aligned in the Z direction with respect to the female hole 593 so as to be in a suitable position depending on the height of the handrail 52 from the walkway 51. The male screw 592 inserted into the mounting hole of the mounting bracket 59 is then inserted into the female hole 593 and fastened to a nut having a female thread. As a result, the position at which the mounting bracket 59 is fixed can be varied in the Z direction along the long axis of the female hole 593.

[0073] The side surface portions 532 and 533 may be formed with both the female thread 591 shown in FIG. 6A and the elongated hole 593 shown in FIG. 6B.

[0074] <Second embodiment> The recovery unit of the second embodiment will be described. In the following description, the same reference numerals will be used to designate components that are the same or substantially the same as those described in the first embodiment. The following description will mainly focus on the differences from the first embodiment.

[0075] Fig. 7 is an external perspective view of the collection unit 60, and Fig. 8 is an exploded perspective view of the collection unit 60. Note that in Figs. 7 and 8, the X, Y, and Z directions are set in the same directions as the X, Y, and Z directions set in Fig. 1. Also, Fig. 8 shows a case where two CO2 adsorbents 50 are housed in the case 53, but the number of CO2 adsorbents 50 is not limited to two.

[0076] 7 and 8, the case 53 has a case body 530, a cover 54, hinges 57, fasteners 58, and mounting brackets 59. The cover 54 is rotatably supported on the case body 530 by the hinges 57, and is fixed to the case body 530 by the fasteners 58.

[0077] The hinge 57 is attached to the cover 54 and the surface portion 535 of the case main body 530. Specifically, the hinge 57 has a rotation shaft 570 along the X direction and plates provided on one side and the other side of the rotation shaft 570. The plate on one side of the hinge 57 is fixed to the vicinity of the end of the surface portion 535 on the positive side in the Z direction by a screw or the like. The plate on the other side of the hinge 57 is fixed to the vicinity of the end of the cover 54 on the positive side in the Y direction by a screw or the like. As a result, the cover 54 is supported by the case main body 530 so as to be rotatable along the arrow AR3 or the arrow AR4 around the rotation shaft 570. The opening 531 is opened and closed by the rotation of the cover 54.

[0078] As shown in Fig. 7, when the cover 54 rotates along the arrow AR3 while the opening 531 is closed, the opening 531 transitions to an open state (see Fig. 8). In the state shown in Fig. 8, the CO2 adsorbent 50 can be inserted into or removed from the case body 530 via the opening 531. Furthermore, when the cover 54 rotates along the arrow AR4 while the opening 531 is open as shown in Fig. 8, the opening 531 transitions to a closed state by the cover 54 (see Fig. 7).

[0079] The fasteners 58 are attached to the cover 54 and the surface portion 536 of the case body 530. Specifically, the fasteners 58 are provided near the end of the cover 54 on the negative side in the Y direction and near the end of the surface portion 536 on the positive side in the Z direction. The fasteners 58 secure the cover 54 to the case body 530 when the cover 54 closes the opening 531. The fasteners 58 are so-called snap locks. Various types of snap locks are available, including a protrusion-compatible type, a metal fitting insertion type, a spring type, a cylinder lock-compatible type, a lock type, and a latch type. A screw may also be used as the fastener 58.

[0080] 7, when opening 531 is closed by cover 54, fastener 58 is closed, and cover 54 is fixed to case body 530 (fixed state). In contrast, when fastener 58 is opened, cover 54 is released from the state where it is fixed to case body 530, and cover 54 becomes rotatable by hinge 57 (rotating state). In other words, depending on whether fastener 58 is opened or closed, cover 54 switches between a rotating state and a fixed state relative to case body 530, and opening / closing opening 531 opens and closes.

[0081] When the fasteners 58 release the cover 54 and open the opening 531, the CO2 adsorbent 50 can be inserted into or removed from the case body 530, as in the first embodiment. That is, when the CO2 adsorbent 50 is inserted into the case body 530, the CO2 adsorbent 50 is moved in the direction of arrow AR1, passes through the opening 531, and is housed in the case body 530. When the CO2 adsorbent 50 is removed from the case body 530, the CO2 adsorbent 50 is moved in the direction of arrow AR2, passes through the opening 531, and is removed to the outside of the case body 530.

[0082] When inserting or removing the CO2 adsorbent 50, it is only necessary to release the fasteners 58 and rotate the cover 54, thereby simplifying the work. Furthermore, because the cover 54 is supported by the case body 530, the occurrence of accidents such as the cover 54 falling off when replacing the CO2 adsorbent 50 is suppressed. In other words, it is possible to improve the efficiency and safety when replacing the CO2 adsorbent 50. Furthermore, because the cover 54 and the case body 530 are fixed together by the fasteners 58, it is possible to suppress the cover 54 from opening unintentionally and the CO2 adsorbent 50 from falling off the case 53 due to vibrations caused by the electric hoist-equipped crane 100 traveling, for example.

[0083] The collection unit 60 of the second embodiment may be disposed in the same position as in the first or second modified example. Furthermore, the mounting bracket 59 of the collection unit 60 of the second embodiment may be attached so that its position in the Z direction can be changed, as in the third modified example.

[0084] According to the second embodiment, in addition to the effects (1) to (4) obtained by the first embodiment or the effect (6) obtained by the second modified example, the following effects can be obtained.

[0085] (7) The case 53 includes a case body 530, a cover 54 that opens and closes the opening 531, hinges 57 that are provided on the case body 530 and the cover 54 and that rotatably support the cover 54 relative to the case body 530, and a fastener 58 that secures the cover 54 to the case body 530 when the cover 54 closes the opening 531. When the fastener 58 is released and the cover 54 rotates relative to the case body 530 to open the opening 531, the CO2 adsorbent 50 passes through the opening 531 and can be inserted into or removed from the case body 530. This simplifies the insertion and removal of the CO2 adsorbent 50 because it is only necessary to release the fastener 58 and rotate the cover 54. Furthermore, because the cover 54 is supported by the case body 530, accidents such as the cover 54 falling off during replacement of the CO2 adsorbent 50 are reduced. In other words, efficiency and safety during replacement of the CO2 adsorbent 50 can be improved. In addition, since the fasteners 58 secure the cover 54 and the case body 530, the cover 54 is prevented from opening unintentionally due to vibrations caused by the operation of the electric hoist crane 100, and the CO2 adsorbent 50 is prevented from falling off the case 53.

[0086] <Third embodiment> The recovery unit of the third embodiment will be described. In the following description, the same reference numerals will be used to designate components that are the same or substantially the same as those described in the first embodiment. The following description will focus mainly on the differences from the first embodiment.

[0087] Fig. 9 is an external perspective view of the recovery unit 60, and Fig. 10 is an exploded perspective view of the recovery unit 60. Note that in Figs. 9 and 10, the X, Y, and Z directions are set in the same directions as the X, Y, and Z directions set in Fig. 1. Also, Fig. 10 shows a case in which one CO2 adsorbent 50 is housed in the case 63, but the number of CO2 adsorbents 50 is not limited to one.

[0088] The case 63 has a case main body 630, a cover 64, and a mounting bracket 59. The case main body 630 has side portions 632, 633, 634, and 635, and a bottom portion 636, and is a rectangular tube with an opening 631 formed on the negative side in the Y direction. Specifically, the bottom portion 636 is provided on the positive side in the Y direction, and is rectangular in shape with two long sides along the X direction and two short sides along the Z direction that are connected to the two long sides at both ends.

[0089] A plurality of rectangular openings 637 are formed in the bottom surface portion 636. In Figures 9 and 10, two openings 637 are formed along the X direction and two openings 637 are formed along the Z direction. Note that the number of openings 637 is not limited to the above.

[0090] The side surface portion 632 is a plate-like member parallel to the XY plane and connected to one long side (positive side in the Z direction) of the bottom surface portion 636. The side surface portion 633 is a plate-like member parallel to the XY plane and connected to the other long side (negative side in the Z direction) of the bottom surface portion 636. The side surface portion 634 is a plate-like member parallel to the YZ plane and connected to one short side (negative side in the X direction) of the bottom surface portion 636. The side surface portion 635 is a plate-like member parallel to the YZ plane and connected to the other short side (positive side in the X direction) of the bottom surface portion 636. An area defined by the negative end portions in the Y direction of the side surface portions 632, 633, 634, and 635 is an opening 631. This opening 631 is an area through which the CO2 adsorbent 50 passes when the CO2 adsorbent 50 is inserted into or removed from the case body 630.

[0091] A flange 638 is formed along the outer periphery of the side surface portions 632, 633, 634, and 635. Four screw holes (female threads) 639 are formed in the flange 638. Specifically, two female threads 639 are formed on each of the side of the flange 638 connected to the side surface portion 632 (i.e., the + side in the Z direction) and the side connected to the side surface portion 633 (i.e., the - side in the Z direction).

[0092] The mounting bracket 59 is attached near the end on the +Z direction side of the side surface portions 634, 635. In this case, the mounting bracket 59 is attached so that the notch 590 is positioned on the -Y direction side of the side surface portions 634, 635.

[0093] The cover 64 is detachably attached to the negative end of the case body 630 in the Y direction. Specifically, the cover 64 is detachably attached to a flange 638 of the case body 630. When the cover 64 is attached to the case body 630, it covers the opening 631. The cover 64 is rectangular with long sides corresponding to the length of the flange 638 in the X direction and short sides corresponding to the length in the Z direction. A plurality of rectangular openings 640 are formed in the cover 64. FIGS. 9 and 10 show a case where two openings 640 are formed along the X direction and two openings 640 are formed along the Z direction. The number of openings 640 is not limited to the above.

[0094] Circular holes 641 are formed on the positive side in the Z direction and the negative side in the Z direction of the cover 64. These circular holes 641 are formed at positions corresponding to the positions where the female threads 639 are formed when the cover 64 is attached to the case body 630. Male screws 642, such as anti-fall-off screws, are inserted into the circular holes 641. The male screws 642 are fastened to the female threads 639, thereby fixing the cover 64 to the case body 630.

[0095] The CO2 adsorbent 50 is inserted or removed after the male screw 642 and the female screw 639 are released and the cover 64 is removed from the case body 630. When the CO2 adsorbent 50 is inserted into the case body 630, the CO2 adsorbent 50 is moved in the direction of the arrow AR5 shown in Fig. 10 and passes through the opening 631, thereby being housed in the case body 630. When the CO2 adsorbent 50 is removed from the case body 630, the CO2 adsorbent 50 is moved in the direction of the arrow AR6 shown in Fig. 10 and passes through the opening 631, thereby being removed to the outside of the case body 630.

[0096] When the case body 630 is attached to the handrail 52 with the mounting brackets 59, the cover 64 and the bottom surface 636 of the case body 630 become surfaces parallel to the ZX plane. In other words, the cover 64 and the bottom surface 636 intersect (are perpendicular to) the Y direction, which is the traveling direction of the crane saddle 20. This makes it possible to make the adsorption surface of the CO2 adsorbent 50 housed in the case body 630 perpendicular to the direction in which the crane saddle 20 moves.

[0097] As described above, the bottom surface 636 has an opening 637, and the cover 64 has an opening 640. Therefore, the airflow generated by the travel of the crane saddle 20 reaches the CO2 adsorbent 50 in the case main body 630 through the openings 637, 640. At this time, because the bottom surface 636 and the cover 64 are surfaces parallel to the ZX plane, it is possible to increase the air flow rate to the CO2 adsorbent 50 in the case main body 630 as the crane saddle 20 travels. As a result, CO2 contained in the atmosphere around the electric hoist-equipped crane 100 reaches the CO2 adsorbent 50 housed inside the case main body 630 and is adsorbed by the CO2 adsorbent 50.

[0098] The collection unit 60 of the third embodiment may be disposed in the same position as in the first or second modified example. Furthermore, the mounting bracket 59 of the collection unit 60 of the third embodiment may be attached so that its position in the Z direction can be changed, as in the third modified example.

[0099] According to the third embodiment, it is possible to obtain the same effects (1) to (5) obtained by the first embodiment or the same effect (6) obtained by the second modified example.

[0100] <Fourth Modification> In the third embodiment described above, the cover 64 constituting the collection unit 60 was detachably attached to the case body 630. In contrast to this, in the fourth modified example, the cover 64 is fixed to the case body 630 so that the opening 631 can be opened and closed. This will be described in detail below. However, in the following description, the same reference numerals will be used to designate components that are the same or substantially the same as those described in the third embodiment. Furthermore, differences from the third embodiment will be mainly described.

[0101] Fig. 11 is an external perspective view of the collection unit 60, and Fig. 12 is an external perspective view of the collection unit 60 with the cover 64 open. Note that in Figs. 11 and 12, the X, Y, and Z directions are set in the same directions as the X, Y, and Z directions set in Fig. 1. Also, Fig. 12 shows a case in which one CO2 adsorbent 50 is housed in the case 63, but the number of CO2 adsorbents 50 is not limited to one.

[0102] The case 63 includes a case body 630, a cover 64, hinges 57, fasteners 58, and mounting brackets 59. As in the third embodiment, the case body 630 has side portions 632, 633, 634, and 635 and a bottom portion 636, and is a rectangular tube with an opening 631 formed on the negative side in the Y direction. The bottom portion 636 also has a plurality of rectangular openings 637 formed therein. However, the side portions 632, 633, 634, and 635 do not have flanges 638. As in the third embodiment, mounting brackets 59 are attached near the ends of the side portions 634 and 635 on the positive side in the Z direction.

[0103] The cover 64 is composed of a bottom surface portion 646 and side surface portions 642, 643, 644, and 645. The bottom surface portion 646 is provided on the negative side in the Y direction with respect to the case body 630, and is rectangular in shape having two long sides along the X direction and two short sides along the Z direction that are connected to the two long sides at both ends.

[0104] A plurality of rectangular openings 640 are formed in the bottom surface 646. As shown in Fig. 11, two openings 640 are formed along the X direction and two openings 640 are formed along the Z direction. Note that the number of openings 640 is not limited to the above.

[0105] When the opening 631 is closed, the side surface portion 642 is parallel to the XY plane and is connected to one long side (positive side in the Z direction) of the bottom surface portion 646. When the opening 631 is closed, the side surface portion 643 is parallel to the XY plane and is connected to the other long side (negative side in the Z direction) of the bottom surface portion 646. When the opening 631 is closed, the side surface portion 644 is parallel to the YZ plane and is connected to one short side (negative side in the X direction) of the bottom surface portion 646. When the opening 631 is closed, the side surface portion 645 is parallel to the YZ plane and is connected to the other short side (positive side in the X direction) of the bottom surface portion 646.

[0106] The cover 64 is attached to the case body 630 on the negative side in the Z direction by a hinge 57 similar to that of the second embodiment. Specifically, the hinge 57 has a rotation axis along the X direction and plates provided on one side and the other side of the rotation axis. The plate on one side of the hinge 57 is fixed to a side surface portion 633 on the negative side in the Z direction of the case body 630 by a screw or the like. The plate on the other side of the hinge 57 is fixed to a side surface portion 643 of the cover 64 by a screw or the like. As a result, the cover 64 rotates along the arrow AR7 or the arrow AR8 in FIG. 12 around the rotation axis.

[0107] The side surface 632 of the case body 630 and the side surface 642 of the cover 64 are provided with fasteners 58 similar to those in the second embodiment. As in the second embodiment, the fasteners 58 are snap locks. The fasteners 58 secure the cover 64 to the case body 630 when the opening 631 is closed by the cover 64.

[0108] When the cover 64 rotates along the arrow AR7 while the opening 631 is closed by the cover 64 (see FIG. 11), the opening 631 transitions to an open state (see FIG. 12). When the cover 64 rotates along the arrow AR8 while the opening 631 is open (see FIG. 12), the opening 631 transitions to a closed state (see FIG. 11). As a result, the CO2 adsorbent 50 can be inserted into or removed from the case body 630 via the opening 631.

[0109] When the CO2 adsorbent 50 is inserted into the case body 630, the CO2 adsorbent 50 is moved in the direction of the arrow AR5 and passes through the opening 631, thereby being housed within the case body 630. When the CO2 adsorbent 50 is removed from the case body 630, the CO2 adsorbent 50 is moved in the direction of the arrow AR6 and passes through the opening 631, thereby being removed from the case body 630.

[0110] As a result, since it is only necessary to rotate the cover 64 when inserting or removing the CO2 adsorbent 50, similar to the second embodiment, the work is simplified and the occurrence of accidents such as the cover 64 falling off is suppressed. In other words, it is possible to improve the efficiency and safety when replacing the CO2 adsorbent 50. Furthermore, since the cover 64 and the case body 630 are fixed by the fasteners 58, it is possible to suppress the cover 64 from opening unintentionally and the CO2 adsorbent 50 from falling off the case 63 due to vibrations caused by the traveling of the crane 100 with an electric hoist, for example.

[0111] The collection unit 60 of the fourth modified example may be disposed in the same position as in the first or second modified example. Furthermore, the mounting bracket 59 of the collection unit 60 of the fourth modified example may be attached so that its position in the Z direction can be changed, as in the third modified example.

[0112] According to the fourth modified example, the effects (1) to (4) obtained by the first embodiment, the effect (6) obtained by the second modified example, or the effect (7) obtained by the second embodiment can be obtained.

[0113] The present invention is not limited to the above-described embodiments and modifications, and other aspects that are conceivable within the scope of the technical concept of the present invention are also included within the scope of the present invention.

[0114] For example, instead of placing the recovery unit 60 on the handrail 52 or the electric hoist 16 of the structure 40, the recovery unit 60 may be placed on the walkway 51 of the structure 40. In this case, the recovery unit 60 may be suspended from the end of the walkway 51 on the negative side in the Y direction so that the adsorption surface of the CO2 adsorbent 50 intersects (is perpendicular to) the Y direction. [Explanation of symbols]

[0115] 1 hoist, 2a, 2b second traveling mechanism, 3 operation input device, 4 crane hook, 5 hoist control unit, 6 hoist frame, 10 girder, 11, 11a, 11b first traveling rail, 12 saddle control unit, 13, 13a, 13b second traveling rail, 14a, 14b traveling drive wheel, 15a, 15b traveling driven wheel, 16 electric hoist, 17a, 17b axle, 20, 20a, 20b crane saddle, 21a, 21b saddle frame, 25a, 25b traveling drive wheel, 26a, 26b traveling driven wheel, 27a, 27b, 28a, 28b axle, 40 structure, 50 CO2 absorbent material, 51 walkway, 52 handrail, 53, 63 case, 54, 64 cover, 55 Male screw, 57 hinge, 58 fastener, 59 mounting bracket, 60 recovery part, 100 crane with electric hoist, 121a, 121b first traveling mechanism, 530, 630 case body, 531, 631 opening, 538 female screw, 541 mounting base, 542 round hole, 570 rotating shaft, 590 notch, 591 female screw, 593 oblong hole

Claims

1. A structure including an electric hoist that moves a load up and down; a girder on which the structure is provided; CO contained in the atmosphere and fixed in the structure ２ a collection unit that collects the The recovery unit recovers CO contained in the surrounding atmosphere. ２ Absorbs and stores CO ２ Crane with electric hoist, including suction material.

2. The crane with an electric hoist according to claim 1, A pair of crane saddles connected to the girder and capable of traveling on a pair of first traveling rails are provided, The crane saddle is The saddle frame and a first traveling mechanism including a wheel that can rotate on the first traveling rail and an axle that rotatably supports the wheel on the saddle frame; The CO ２ A crane with an electric hoist, wherein the adsorbent is a filter, enclosed in a breathable pack, and placed in the flow path of the air flow generated by the travel of the crane saddle.

3. The crane with an electric hoist according to claim 2, The structure includes a walkway and a handrail provided on the walkway, The recovery unit is a crane with an electric hoist, fixed to the handrail.

4. The crane with an electric hoist according to claim 1, a second running rail provided on the girder and on which the electric hoisting machine runs; The electric hoist is A hoisting machine frame; a second traveling mechanism including a wheel rotatable on the second traveling rail and an axle that rotatably supports the wheel on the hoist frame, The recovery unit is fixed to the hoist frame, The CO ２ A crane with an electric hoist, wherein the adsorbent is a filter, is enclosed in a breathable pack, and is placed in a flow path of air flow generated by the running of the electric hoist.

5. The crane with an electric hoist according to any one of claims 1 to 4, The recovery unit ２ A crane with an electric hoist that has a case that detachably supports an adsorbent.

6. The crane with an electric hoist according to claim 5, The case is ２ The adsorbent includes a case body that accommodates an adsorbent therein, an opening provided in the case body, and a cover that covers the opening, the cover is detachably attached to the case body by screws, When the cover is removed from the case body, the CO ２ The adsorbent passes through the opening and can be inserted into and removed from the case body.

7. The crane with an electric hoist according to claim 5, The case is The CO ２ a case body that houses an adsorbent therein; an opening provided in the case body; a cover that opens and closes the opening; a hinge provided on the case body and the cover, which supports the cover rotatably relative to the case body; a fastener for fastening the cover to the case body when the cover closes the opening, When the fastener is released and the cover rotates relative to the case body to open the opening, the CO ２ The adsorbent material can be inserted into and removed from the case body through the opening.

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