Carriage for ceiling-type air conditioning unit and movement method of ceiling-type air conditioning unit

Abstract

To provide a carriage for a ceiling-type air conditioning unit which can correspond to a various sizes of ceiling-type air conditioning units and which can pass through a narrow place, and to provide a movement method of the ceiling-type air conditioning unit.SOLUTION: A carriage on which a ceiling-type air conditioning unit can be placed includes: a first carriage unit for supporting the ceiling-type air conditioning unit; and a second carriage unit for supporting the ceiling-type air conditioning unit. Each of the first carriage unit and the second carriage unit includes: two engagement members which are engageable with a lower part of the ceiling-type air conditioning unit; a support material in which a slide groove is provided where two engagement members can slide on the same linear line respectively, on a support surface for supporting the ceiling-type air conditioning unit from below; and two wheels provided at the support material at each of one end side and the other end side in a longer direction of the slide groove.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a carriage for a ceiling-suspended air conditioning unit and a method for moving a ceiling-suspended air conditioning unit. [Background technology]

[0002] In recent years, various techniques have been proposed to facilitate the installation of concealed air conditioners that are installed above the ceiling (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-76367 Summary of the Invention [Problem to be solved by the invention]

[0004] When installing a ceiling-mounted air conditioning unit inside a building, it may need to be passed through narrow passageways or placed on an elevator with a small cargo area. Therefore, when transporting a ceiling-mounted air conditioning unit on a cart, the cart must be limited in size so that it can fit through the transport route. However, because ceiling-mounted air conditioning units come in a variety of sizes, a small cart makes it difficult to accommodate ceiling-mounted air conditioning units of various sizes.

[0005] Therefore, the present application discloses a carriage for a ceiling-suspended air conditioning unit that can accommodate ceiling-suspended air conditioning units of various sizes and can pass through narrow spaces, and a method for moving a ceiling-suspended air conditioning unit. [Means for solving the problem]

[0006] In order to solve the above problem, in the present invention, a pair of cart units, each having two wheels, are attached to a ceiling-mounted air-conditioning unit.

[0007] In detail, the present invention relates to a cart on which a ceiling-hanging air conditioning unit can be placed, comprising a first cart unit that supports the ceiling-hanging air conditioning unit, and a second cart unit that supports the ceiling-hanging air conditioning unit, and each of the first cart unit and the second cart unit has two engaging members that can engage with the lower part of the ceiling-hanging air conditioning unit, a support material on a support surface that supports the ceiling-hanging air conditioning unit from below, with slide grooves that allow the two engaging members to slide in the same straight line, and two wheels provided on the support material at each of one end and the other end in the longitudinal direction of the slide grooves.

[0008] The above-mentioned cart can accommodate ceiling-suspended air conditioning units of various sizes because two cart units are attached to the ceiling-suspended air conditioning unit. Also, because it can accommodate ceiling-suspended air conditioning units of various sizes without increasing the size of the cart, there is no risk that the size of the cart will make it difficult to pass through the transportation route.

[0009] Furthermore, each of the above-mentioned cart units is provided with an engaging member that can slide along a slide groove, so the cart unit can be easily engaged with a ceiling-suspended air-conditioning unit while being compatible with ceiling-suspended air-conditioning units of various sizes. Therefore, it can be said that the above-mentioned cart can be used with ceiling-suspended air-conditioning units of various sizes and can pass through narrow spaces.

[0010] The ceiling-mounted air conditioning unit includes a ceiling-mounted air conditioning unit body, accessory parts connected to the air conditioning unit body, and a ceiling-mounted frame that integrally holds the air conditioning unit body and accessory parts together. The engaging member may have a claw that can engage with the frame. In this way, the claw can be hooked onto the frame to engage, making it possible to easily attach each cart unit to the ceiling-mounted air conditioning unit.

[0011] The slide groove may be a groove that can engage with the head of a bolt, and the engaging member may be slidably engaged with the slide groove by the bolt whose head is engaged in the slide groove. This makes it easy to slide and fix the engaging member.

[0012] The first and second carriage units may each be provided on the support at one and the other longitudinal ends of the slide groove, and may further include two fasteners for engaging with securing belts. This allows for more secure attachment of the carriage units using the fasteners in addition to engagement by the engaging members.

[0013] The present invention can also be viewed from the perspective of a method. For example, the present invention may be a method for moving a ceiling-suspended air-conditioning unit, comprising: an attachment step of attaching a carriage for the ceiling-suspended air-conditioning unit described above to the ceiling-suspended air-conditioning unit; and a moving step of moving the ceiling-suspended air-conditioning unit with the carriage attached in the attachment step while rolling on its wheels, wherein in the attachment step, the first carriage unit and the second carriage unit are attached to the lower part of the ceiling-suspended air-conditioning unit so that their slide grooves are parallel to each other while being spaced apart from each other.

[0014] In this case, in the installation process, the cart is attached to the side of the ceiling-suspended air conditioning unit in the suspended position, and in the moving process, the ceiling-suspended air conditioning unit is turned sideways from the suspended position so that the cart is positioned below the ceiling-suspended air conditioning unit, and then moved while rolling on its wheels. [Effects of the Invention]

[0015] The above-described carriage for a ceiling-suspended air-conditioning unit and method for moving a ceiling-suspended air-conditioning unit can accommodate ceiling-suspended air-conditioning units of various sizes and can pass through narrow spaces. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a diagram showing a ceiling-mounted air conditioning unit as viewed obliquely from above. [Figure 2] FIG. 2 is a diagram showing the ceiling-mounted air conditioning unit as viewed from the side. [Figure 3]FIG. 3 is a diagram showing a dolly that can be used to move a ceiling-mounted air conditioning unit. [Figure 4] FIG. 4 shows the engaging fitting. [Figure 5] FIG. 5 shows a ceiling-mounted air conditioning unit with a carriage unit attached. [Figure 6] FIG. 6 is a diagram showing the mounting state of the carriage unit. [Figure 7] FIG. 7 is a partial enlarged view showing the mounting state of the carriage unit. [Figure 8] FIG. 8 is a diagram showing a truck according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0017] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following describes embodiments of the present invention. The embodiments described below are merely examples of the present invention, and the technical scope of the present invention is not limited to the following aspects.

[0018] FIG. 1 is a diagram showing a ceiling-mounted air conditioning unit 1 as viewed obliquely from above. FIG. 2 is a diagram showing the ceiling-mounted air conditioning unit 1 as viewed from the side. FIG. 1 shows the ceiling-mounted air conditioning unit 1 suspended from the ceiling by suspension bolts K. For ease of explanation, in this embodiment, the Z-axis direction in FIGS. 1 and 2 is defined as the upward direction of the ceiling-mounted air conditioning unit 1, and the direction along the XY plane defined by the X-axis and Y-axis is defined as the lateral direction of the ceiling-mounted air conditioning unit 1. Furthermore, the suspension bolts that suspend the ceiling-mounted air conditioning unit 1 from the ceiling of a building Although the suspension bolt K is usually provided with a vibration stop F as shown in FIG. 1, the vibration stop provided on the suspension bolt K is not limited to this type. The vibration stop F may be, for example, a cross type that intersects diagonally when viewed from above. The vibration stop may be omitted, for example, when the ceiling-suspended air-conditioning unit 1 is directly attached to the ceiling, when the suspension bolt K suspending the ceiling-suspended air-conditioning unit 1 is extremely short, or when the ceiling-suspended air-conditioning unit 1 is rigidly connected to the ceiling with metal fittings that are stronger than the suspension bolt K. The vibration stop is not limited to being attached to the top and bottom of the suspension bolt K, and may be, for example, one in which the upper end is embedded in the ceiling and the lower end is connected to the ceiling-suspended air-conditioning unit 1.

[0019] As shown in Figures 1 and 2, the ceiling-mounted air conditioning unit 1 is an air conditioning unit that integrates an air conditioner main body 3, an air supply chamber 4, and a return air chamber 5 mounted on a frame 2. The air supply chamber 4 and the return air chamber 5 are examples of "accessory parts" as used herein. The "accessory parts" as used herein refer to all air conditioning-related parts used with the air conditioner main body 3, including the air supply chamber 4 and the return air chamber 5, as well as various chambers, refrigerant piping, water piping, drain piping, drain pumps, dampers, intake and exhaust grilles, filters, and other air conditioning-related parts. The ceiling-mounted air conditioning unit 1 is installed in a narrow attic space between the floor that forms the floor surface of the upper floor or roof of a building and the decorative ceiling panel that forms the ceiling surface of the floor on which the ceiling-mounted air conditioning unit 1 is installed. Therefore, as shown in Figure 1, the ceiling-mounted air conditioning unit 1 has a generally horizontally elongated appearance, with its horizontal dimension being longer than its vertical dimension.

[0020] Furthermore, when the ceiling-suspended air conditioning unit 1 is installed behind a ceiling panel, the ceiling-suspended air conditioning unit 1 is in a concealed state. However, the ceiling-suspended air conditioning unit 1 is not limited to being installed in such a concealed state. For example, when no decorative ceiling panel is installed on the ceiling, the ceiling-suspended air conditioning unit 1 is visible to people in the room.

[0021] In addition, the hanging bolt K may be threaded into a nut for supporting the hanging bolt embedded in the floor concrete that makes up the floor, but instead, it may be threaded into various components such as hangers attached to structural materials such as H-beams that make up the beams.

[0022] As shown in Figures 1 and 2, the ceiling-mounted air conditioning unit 1 has an air supply chamber 4 connected to the exhaust port side of the air conditioner main body 3, and a return air chamber 5 connected to the intake port side of the air conditioner main body 3. Therefore, the ceiling-mounted air conditioning unit 1 is configured so that the air conditioner main body 3 is located in the center of the frame 2, and the air conditioner main body 3 is sandwiched between the air supply chamber 4 and the return air chamber 5. The connecting parts between the air conditioner main body 3 and the air supply chamber 4, and the connecting parts between the return air chamber 5 and the air supply chamber 4, are loosely connected, allowing for some relative movement. In other words, one opening that fits into the other opening is made slightly smaller, and the gap between the openings is filled with a sealing material such as a flexible, airtight sponge packing, resulting in a loose connection structure that allows for some relative movement.

[0023] First, we will explain the air conditioner main body 3. The air conditioner main body 3 is a package unit that houses a coil through which a heat medium for temperature adjustment flows and an electric fan for blowing air inside a rectangular housing 31, and is also equipped with auxiliary equipment 32 and auxiliary piping 33 outside the housing 31. Examples of auxiliary equipment 32 include a valve that switches the flow path of the heat medium piping through which the heat medium flows to the coil, and a drain pump that drains the drain pan that receives water condensed on the coil.

[0024] The air conditioner main body 3 is supported by a ceiling-hanging mounting part 34 provided on the outer surface of the housing 31, which is attached to a hanging bracket 26 provided on the frame 2. The air conditioner main body 3 is a ready-made device that is intended to be used in a suspended state by a hanging bracket such as a hanging bolt K provided on a building, so the ceiling-hanging mounting part 34 is also attached to a hanging bracket such as a hanging bolt K. The ceiling-mounted air conditioning unit 1 of this embodiment is designed to be attached to a hanging bracket. Therefore, in this embodiment, the hanging bracket 26 attached to the frame 2 is designed to resemble such a hanging bracket, so that the air conditioner body 3 is suspended within the frame 2. Furthermore, because the air conditioner body 3 has a built-in electric fan, vibration-isolating rubber 35 is provided on the ceiling-mounting attachment portion 34, and the vibration-isolating rubber 35 blocks vibrations transmitted from the air conditioner body 3 to the frame 2. This minimizes the generation of abnormal noise and other problems caused by vibrations generated by the air conditioner body 3 causing the frame 2 to resonate. The vibration-isolating rubber 35 is designed to have a vibration-isolating allowable direction that allows movement for vibration isolation. Therefore, when the air conditioner body 3 is transported under load, it is desirable that the vibration-isolating allowable direction and the direction of the load (direction of gravity) be roughly aligned. Note that the means for blocking vibrations from the air conditioner body 3 are not limited to the above-described form of interposing the vibration-isolating rubber 35 between the frame 2 and the air conditioner body 3. For example, a spring or rubber may be provided at the connection between the frame 2 and the hanging bolt K. However, in this case, the frame 2 will be able to move relative to the hanging bolt K, and the frame 2 itself will not have earthquake resistance. Therefore, from the perspective of ensuring the earthquake resistance of the entire ceiling-mounted air-conditioning unit 1, in this embodiment, the connection between the frame 2 and the hanging bolt K is rigidly connected, making the frame 2 itself earthquake-resistant, and instead, vibration-proof rubber 35 is interposed between the frame 2 and the air conditioner main body 3.

[0025] Next, the air supply chamber 4 will be described. The air supply chamber 4 is a chamber for diverting the conditioned air blown out from the air conditioner main body 3 to multiple air supply ducts installed throughout the building. Therefore, a rectangular housing 41 that forms the interior space of the chamber is provided with multiple connection openings 42 for connecting the air supply ducts. While six connection openings 42 are provided in the housing 41 in FIGS. 1 and 2, the number of connection openings 42 can be changed as appropriate depending on the size of the housing 41, the diameter of the connection openings 42, and other factors. Furthermore, the air supply chamber 4 is not limited to a configuration in which air supply ducts are connected to all six connection openings 42. The number of air supply ducts actually connected to the air supply chamber 4 depends on the number of air supply ducts installed where the ceiling-mounted air-conditioning unit 1 is installed. Therefore, if the installation location of the ceiling-mounted air conditioning unit 1 has two air supply ducts, for example, four of the six connecting openings 42 in the air supply chamber 4 will be used with their openings closed. Therefore, it is conceivable to omit the connecting openings 42 with their openings closed in advance and manufacture an air supply chamber 4 with only the required number of connecting openings 42 and incorporate it into the ceiling-mounted air conditioning unit 1. However, in this embodiment, we propose preparing multiple standardized ceiling-mounted air conditioning units 1 that can be applied to various installation locations in order to improve installation efficiency and shorten the manufacturing time for components. However, the ceiling-mounted air conditioning unit 1 disclosed in this application is not limited to this type of configuration that can be applied to various locations. The ceiling-mounted air conditioning unit 1 may also have an air supply chamber 4 with a number of connecting openings 42 corresponding to the installation location.

[0026] Next, the return air chamber 5 will be described. The return air chamber 5 is a chamber for joining air flowing from multiple return air ducts installed throughout the building, and is formed by a hollow rectangular housing 51. Like the supply air chamber 4, the return air chamber 5 is also provided with multiple connection openings for connecting the return air ducts. Like the supply air chamber 4, the return air chamber 5 also has a configuration provided with multiple connection openings so that it can be installed in a variety of locations, but the ceiling-mounted air conditioning unit 1 may also be provided with a return air chamber 5 having a number of connection openings corresponding to the installation location, as described above.

[0027] The air supply chamber 4 and the return air chamber 5 do not have built-in driving parts such as electric fans like the air conditioner main body 3, so they do not generally generate vibrations. Therefore, in this embodiment, the air supply chamber 4 and the return air chamber 5 are attached to the frame 2 without using parts that block vibration transmission, such as vibration-isolating rubber. However, the ceiling-mounted air conditioning unit 1 does not The ceiling-suspended air-conditioning unit 1 may be, for example, one in which the supply air chamber 4 and the return air chamber 5 are attached to the frame 2 via vibration-isolating rubber. Also, the ceiling-suspended air-conditioning unit 1 may be, for example, one in which the supply air chamber 4 and the return air chamber 5 are attached to the frame 2 by members with a hanging structure similar to the air conditioner main body 3.

[0028] Thus, the ceiling-mounted air conditioning unit 1, which integrates the air conditioner main body 3, the supply air chamber 4, and the return air chamber 5, is naturally heavier than each of the air conditioner main body 3, the supply air chamber 4, and the return air chamber 5 individually. Therefore, weight reduction is required to enable lifting using an indoor aerial work vehicle and installation near the ceiling of a building. Therefore, in the ceiling-mounted air conditioning unit 1 of this embodiment, the frame 2 is constructed from aluminum members. Therefore, even in the areas where the angle irons 21 constituting the frame 2 are fastened together, bolts are used to fasten the rib plates 22 and 23, thereby achieving sufficient strength compared to welding the angle irons 21 together. Furthermore, to strengthen the strength near the ends of the frame 2, rod screws 25 are provided to fasten the ends of the angle irons 21 together at locations corresponding to the corners of the frame 2. Furthermore, among the fastening portions between the multiple angle irons 21 on the frame 2, one rib plate 23 is provided at each location (locations indicated by reference numeral 23) where a load is applied in a direction along the plate surface of the rib plate (plane direction), while two rib plates 22 are provided at each location (locations indicated by reference numeral 22) where a load is applied in a direction that bends the rib plate. Fastening the angle irons 21 together while sandwiching the angle irons 21 between the two rib plates 22 prevents deformation or damage to the rib plates 22 due to the load. For example, as can be seen from FIG. 1 , the hanging portion 24 provided on the frame 2 for attaching to the hanging bolt K that hangs the ceiling-suspended air-conditioning unit 1 is provided midway along the angle iron 21 extending laterally. Therefore, when the ceiling-suspended air-conditioning unit 1 is suspended by the hanging bolt K, the weight of the entire ceiling-suspended air-conditioning unit 1 is applied to the end of the angle iron 21. Therefore, providing two rib plates 22 at such locations is effective in ensuring the strength of the frame 2.

[0029] FIG. 3 shows a cart that can be used to move the ceiling-suspended air conditioning unit 1. As described above, the ceiling-suspended air conditioning unit 1 has a horizontally elongated shape with its horizontal dimension longer than its vertical dimension, in order to be installed in the narrow ceiling space between the floor and the ceiling panel. The air conditioner main body 3 is suspended within the frame 2 by a hanging bracket 26 attached to the frame 2. Therefore, when transporting such a ceiling-suspended air conditioning unit 1 to a construction site in a flat position, i.e., in the suspended position, it is difficult to pass through narrow passages or load it onto a lifting device with a narrow cargo compartment. Therefore, when moving the ceiling-suspended air conditioning unit 1, it is preferable to move it by turning it sideways from the suspended position. Furthermore, it is preferable that the cart on which the ceiling-suspended air conditioning unit 1 is carried be able to easily pass through narrow transportation routes and be able to accommodate ceiling-suspended air conditioning units 1 of various sizes.

[0030] Therefore, in this embodiment, when moving the ceiling-suspended air-conditioning unit 1, a cart unit 11 as shown in Figure 3 is used. Two cart units 11 are attached to the ceiling-suspended air-conditioning unit 1, and each cart unit 11 includes a support member 12, an engaging fitting 13 for engaging the ceiling-suspended air-conditioning unit 1, a caster 14, and an eyebolt 15. The engaging fitting 13 is an example of the "engaging member" referred to in this application. The eyebolt 15 is an example of the "fastening portion" referred to in this application.

[0031] The support member 12 is a rod-shaped member made of so-called extruded aluminum, and has a support surface 121 on its upper surface for supporting the ceiling-mounted air-conditioning unit 1. The support member 12 also has a slide groove 122 on the support surface 121 that extends along the longitudinal direction of the support member 12. The slide groove 122 is a groove that allows the engaging fitting 13 to be fastened to the support member 12 at any position along the longitudinal direction, and is designed to engage with the head of a bolt 134 that fastens the engaging fitting 13. Therefore, by loosening a nut 133 that is threaded onto the bolt 134, the engaging fitting 1 can be removed. 3 can be fastened at an appropriate position along the longitudinal direction of the support material 12. The slide groove 122 is an inverted T-shaped groove when viewed from the end of the support material 12 in the longitudinal direction of the support material 12. Therefore, when the head of the bolt 134 is engaged with the slide groove 122, the head of the bolt 134 can be inserted and removed from the slide groove 122 only at both ends of the support material 12 in the longitudinal direction, and cannot be removed from any other position.

[0032] The caster 14 is a swivel caster that can be steered freely in its direction of travel, and includes a wheel 141, a fork 142, and a brake 143. The fork 142 can be freely rotated about a vertical axis, so that the direction of the wheel 141 can be steered freely. The caster 14 is disposed on the underside of the support material 12, at both ends of the support material 12 in the longitudinal direction. The caster 14 is fixed to the support material 12 by a nut 144 being threaded onto a screw inserted into a hole in a flange 123 provided on the support material 12.

[0033] The eyebolts 15 are provided at both longitudinal ends of the support material 12. The eyebolts 15 are fixed so as not to move freely along the slide grooves 122 by being threaded into nuts fitted into the slide grooves 122. The eyebolts 15 have rings onto which a hook can be attached. Because the eyebolts 15 are fixed at both longitudinal ends of the support material 12 by being threaded into nuts fitted into the slide grooves 122, they also serve to prevent the bolts 134 described above from coming off the slide grooves 122.

[0034] Engagement fitting 13 is a member that looks like a short angle bar with an L-shaped cross section, and has an L-shaped portion 131 and a claw portion 132 provided at the end of L-shaped portion 131. Figure 4 is a diagram showing engagement fitting 13. As can be seen from Figure 4, claw portion 132 forms a U-shaped claw.

[0035] Furthermore, engaging fitting 13 is provided with hole 135. Hole 135 is a hole for inserting the threaded portion of bolt 134, whose head is engaged with slide groove 122, and is formed to penetrate the surface of L-shaped portion 131 that contacts support surface 121. By fastening nut 133 to bolt 134 inserted into hole 135, engaging fitting 13 is fixed to support material 12.

[0036] Furthermore, the engaging fitting 13 is provided with a hole 136. The hole 136 is a hole for passing a protrusion such as the threaded portion of a bolt attached to the frame 2 of the ceiling-suspended air-conditioning unit 1. The hole 136 is used, for example, when the claw portion 132 cannot be hooked onto the frame 2 of the ceiling-suspended air-conditioning unit 1. The engaging fitting 13 is not limited to a form having the hole 136. The engaging fitting 13 may also be one that does not have the hole 136. Furthermore, the carriage unit 11 may use both an engaging fitting 13 that does not have the hole 136 and an engaging fitting 13 that has the hole 136.

[0037] The dimensions of each part of the engaging fitting 13 are as shown in FIG. 4. The claw portion 132 of the engaging fitting 13 is formed by bending a metal plate twice using a press process to form a U-shape, and then welding the U-shaped portion to the L-shaped portion 131. The hole 136 is formed so that it penetrates both components after the claw portion 132 is welded to the L-shaped portion 131. For welding convenience, as can be seen in FIG. 4, the L-shaped portion 131 has a length (width) of 115.0 mm in the longitudinal direction, while the U-shaped plate forming the claw portion 132 has a length (width) of 85.0 mm in the longitudinal direction. The width of the claw portion 132 is smaller than the width of the L-shaped portion 131, resulting in easier hooking of the frame 2 of the ceiling-mounted air-conditioning unit 1. On the other hand, the L-shaped portion 131 has an appropriate width, allowing the support member 12 of the cart unit 11 to be stably fixed to the ceiling-mounted air-conditioning unit 1. Furthermore, since hole 136 is formed to penetrate the plate material forming L-shaped portion 131 and the plate material forming claw portion 132, hole 136 can adequately hold a protrusion such as the threaded portion of a bolt.

[0038] Fig. 5 is a diagram showing a ceiling-suspended air conditioning unit 1 with a carriage unit 11 attached. As shown in Fig. 5, two carriage units 11 are attached to the ceiling-suspended air conditioning unit 1 for use. Therefore, hereinafter, one of the two carriage units 11 will be referred to as the first carriage unit D1, and the other as the second carriage unit D2. The combination of the first carriage unit D1 and the second carriage unit D2 will be referred to as carriage D.

[0039] In Figure 5, the ceiling-suspended air conditioning unit 1 is shown in a state where it has been turned sideways from its suspended position. In Figure 5, the cart D is positioned below the ceiling-suspended air conditioning unit 1. In other words, the first cart unit D1 and the second cart unit D2 of the cart D are attached to the sides of the ceiling-suspended air conditioning unit 1 in its suspended position. By attaching the cart D to the ceiling-suspended air conditioning unit 1 in this manner, the ceiling-suspended air conditioning unit 1 can be easily moved by rolling on the wheels 141. Furthermore, compared to transporting the ceiling-suspended air conditioning unit 1 to a construction site laid flat, i.e., in its suspended position, it is easier to pass through narrow passages and load onto a lifting device with a narrow cargo compartment.

[0040] Furthermore, because the cart D is used by attaching the first cart unit D1 and the second cart unit D2, which are separate bodies, to the ceiling-suspended air-conditioning unit 1, it can accommodate ceiling-suspended air-conditioning units 1 of various sizes. For example, when used to move a relatively large ceiling-suspended air-conditioning unit 1, it is sufficient to fix the first cart unit D1 and the second cart unit D2 to the ceiling-suspended air-conditioning unit 1 while they are spaced apart from each other. Also, when used to move a relatively small ceiling-suspended air-conditioning unit 1, it is sufficient to fix the first cart unit D1 and the second cart unit D2 to the ceiling-suspended air-conditioning unit 1 while they are close to each other.

[0041] As shown in Fig. 5, the cart D is attached to the lower portion of the ceiling-suspended air-conditioning unit 1, which is a roughly rectangular parallelepiped in overall view and is laid on its side. One of the two cart units, a first cart unit D1 and a second cart unit D2, which the cart D has is attached to one end in the longitudinal direction of the lower portion of the ceiling-suspended air-conditioning unit 1 (either the left or right side in Fig. 5), and the other of the first cart unit D1 and the second cart unit D2 is attached to the other end in the longitudinal direction of the lower portion of the ceiling-suspended air-conditioning unit 1. The first cart unit D1 and the second cart unit D2 are fixed to the ceiling-suspended air-conditioning unit 1 in a relative orientation such that their respective slide grooves 122 are parallel to each other and spaced apart from each other. In addition to the aforementioned engaging fittings 13, the first cart unit D1 and the second cart unit D2 may be fixed to the ceiling-mounted air conditioning unit 1 using a securing belt 16 with a hook hooked onto an eyebolt 15, as shown in Figure 5.

[0042] Fig. 6 is a diagram showing the installation state of the bogie unit 11. Fig. 6 shows the installation portion of the second bogie unit D2, but the same is true for the first bogie unit D1. Fig. 7 is a partially enlarged view showing the installation state of the bogie unit 11. Fig. 7(A) shows an enlarged view of the area indicated by the symbol A in Fig. 6, and Fig. 7(B) shows an enlarged view of the area indicated by the symbol B in Fig. 6.

[0043] As shown in FIG. 7(A), the claws 132 of the engaging fittings 13 engage with the angle members 21 of the frame 2 of the ceiling-suspended air-conditioning unit 1. The two engaging fittings 13 provided on the second cart unit D2 are arranged so as to sandwich the ceiling-suspended air-conditioning unit 1 between them. The securing belts 16 are fastened in a state where they are hooked onto the eyebolts 15. In this way, the second cart unit D2 is firmly attached to the ceiling-suspended air-conditioning unit 1 by the engaging fittings 13 and the securing belts 16. Therefore, for example, even if the casters 14 are impacted by a step while the ceiling-suspended air-conditioning unit 1 is being moved, the second cart unit D2 will not come off the ceiling-suspended air-conditioning unit 1.

[0044] Of the two engaging fittings 13 shown in FIG. 6, the engaging fitting 13 shown on the near side (right side of the page) has its claw portion 132 not engaged with the frame 2, as shown in FIG. 7(B). This is because it interferes with the rib plate 22 of the frame 2, preventing the claw portion 132 from engaging with the angle iron 21 of the frame 2. For this reason, the frame 2 of the ceiling-suspended air-conditioning unit 1 is engaged with the engaging fitting 13 by inserting a screw (protrusion 27) protruding from the frame 2 into a hole 136. Because the engaging fitting 13 has a hole 136, even if the claw portion 132 cannot engage with the frame 2, it can still engage with the frame 2 of the ceiling-suspended air-conditioning unit 1 by using the hole 136.

[0045] The first cart unit D1 and the second cart unit D2 can be attached to the ceiling-suspended air conditioning unit 1 by turning the ceiling-suspended air conditioning unit 1 sideways from its suspended position, or by leaving the ceiling-suspended air conditioning unit 1 in its suspended position. When attaching the first cart unit D1 and the second cart unit D2 to the ceiling-suspended air conditioning unit 1 in its suspended position, the installer can attach the first cart unit D1 and the second cart unit D2 to the ceiling-suspended air conditioning unit 1 from the side of the ceiling-suspended air conditioning unit 1. This makes it easy to attach the first cart unit D1 and the second cart unit D2 to the ceiling-suspended air conditioning unit 1. When attaching the first cart unit D1 and the second cart unit D2 to the ceiling-suspended air conditioning unit 1 in its suspended position, it is preferable that the ceiling-suspended air conditioning unit 1 be placed on a workbench or the like.

[0046] The bogie unit 11 is not limited to the above-described configuration. The bogie unit 11 may be formed of, for example, a steel frame material as the support member 12 instead of an aluminum extrusion. FIG. 8 shows a bogie according to a modified example. The bogie unit 11 of the bogie D may be formed of, for example, two parallel-joined lightweight steel pieces with a C-shaped cross section, also known as lightweight C-section steel or lip channel steel, as shown in FIG. 8. Even a bogie unit 11 using such lightweight steel support members 12 can be attached to the ceiling-mounted air-conditioning unit 1 and easily moved. In this modified bogie unit 11, the inverted T-shaped slide groove 122 cannot be formed, so the heads of the bolts 134 protrude from the underside of the support members 12.

[0047] Furthermore, the carriage unit 11 may use, as the support member 12, a non-rod-shaped structure assembled by joining rods or the like, instead of a straight rod-shaped member.

[0048] Furthermore, the cart unit 11 is not limited to being used to move a ceiling-suspended air-conditioning unit 1 that has a frame 2. For example, the cart unit 11 may be used to move a ceiling-suspended air-conditioning unit 1 that does not have a frame 2. Furthermore, instead of engaging the frame 2 of the ceiling-suspended air-conditioning unit 1 with the claw portion 132 of the engaging fitting 13, the cart unit 11 may use an engaging fitting 13 that engages with an engaged portion provided on the ceiling-suspended air-conditioning unit 1 by means other than a claw.

[0049] Furthermore, the carriage unit 11 can be modified as appropriate within the scope that does not change the gist of the invention disclosed in this application. [Explanation of symbols]

[0050] K··Hanging bolt: F··Sway stopper: D··Cart: 1··Ceiling-mounted air conditioning unit: 2··Frame: 3··Air conditioning unit body: 4··Air supply chamber: 5··Return air chamber: 21··Angle material: 22··Rib plate: 23··Rib plate: 24··Hanging part: 25··Rod screw: 26··Hanging bracket: 27··Protrusion: 31··Housing: 32··Auxiliary equipment: 33··Auxiliary piping: 34··Ceiling-mounted mounting part: 35··Vibration-proof rubber: 41··Housing: 42··Connecting Connection opening: 51 · Housing: D1 · First carriage unit: D2 · Second carriage unit: 11 · Carriage unit: 12 · Support: 13 · Engagement fitting: 14 · Caster: 15 · Eye bolt: 16 · Securement belt: 121 · Support surface: 122 · Slide groove: 123 · Flange: 131 · L-shaped part: 132 · Claw part: 133 · Nut: 134 · Bolt: 135 · Hole: 136 · Hole: 141 · Wheel: 142 · Fork: 143 · Brake: 144 · Nut

Claims

1. A cart on which a ceiling-mounted air conditioning unit can be placed, a first carriage unit that supports the ceiling-suspended air conditioning unit; a second carriage unit that supports the ceiling-suspended air conditioning unit, The first bogie unit and the second bogie unit each include: two engaging members that can be engaged with a lower portion of the ceiling-suspended air conditioning unit; a support member having a support surface that supports the ceiling-suspended air-conditioning unit from below, and a slide groove that allows the two engaging members to slide in the same straight line; two wheels provided on the support member at each of one end side and the other end side in the longitudinal direction of the slide groove; Cart for ceiling-mounted air conditioning unit.

2. The ceiling-suspended air conditioning unit includes a ceiling-suspended air conditioning unit main body, accessory parts connected to the air conditioning unit main body, and a ceiling-suspended frame that integrally holds the air conditioning unit main body and the accessory parts, The engaging member has a claw that can engage with the frame. A carriage for the ceiling-mounted air conditioning unit according to claim 1.

3. the slide groove is a groove that can engage with the head of a bolt, The engaging member is slidably engaged with the slide groove by a bolt whose head is engaged with the slide groove. A carriage for the ceiling-mounted air conditioning unit according to claim 1.

4. The first bogie unit and the second bogie unit each include: The slide groove further has two fastening portions provided on the support member at one end and the other end in the longitudinal direction thereof, and capable of engaging a securing belt. A carriage for the ceiling-mounted air conditioning unit according to claim 1.

5. a mounting step of mounting the carriage of the ceiling-suspended air-conditioning unit according to any one of claims 1 to 4 to the ceiling-suspended air-conditioning unit; a moving step of moving the ceiling-suspended air-conditioning unit to which the carriage is attached in the attaching step while rolling the wheels, In the attaching step, The first carriage unit and the second carriage unit are attached to the lower part of the ceiling-suspended air conditioning unit so that the slide grooves are parallel to each other while being spaced apart from each other. How to move a ceiling-mounted air conditioning unit.

6. In the attaching step, the carriage is attached to the ceiling-suspended air-conditioning unit from a side of the ceiling-suspended air-conditioning unit in a suspended position; In the moving step, the ceiling-suspended air-conditioning unit is turned sideways from a suspended position so that the cart is positioned below the ceiling-suspended air-conditioning unit, and then the cart is moved while rolling on the wheels. A method for moving a ceiling-mounted air conditioning unit according to claim 5.

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