transport robots

Abstract

The present disclosure relates to a transport robot. The transport robot is configured to transfer transported objects to and from an installation rack by passing through an installation rack. A rack portion holding the transported objects is configured to allow the transport robot to travel through the installation rack. A chassis is configured to support the rack portion. A bracket is arranged on a first end side in the left-right direction of the transport robot and extends upward from the chassis. An operating unit is configured to be mounted on the bracket.

Description

Technical Field

[0001] The present disclosure relates to a transport robot. Background Art

[0002] Japanese Unexamined Patent Application Publication (a translation of a PCT application) No. 2021-517076 discloses an autonomous transport robot. This autonomous transport robot has a robotic arm that performs loading and unloading of objects (transport objects). The robotic arm places the objects on a plate-shaped loading member. Summary of the Invention

[0003] When transporting goods by such robots, it is expected that the goods can be transferred (loaded or unloaded) efficiently. In other words, it is expected that the transport efficiency can be improved by transferring the transported objects in a convenient manner.

[0004] The transport robot according to the present disclosure is configured to transfer transported objects to and from an installation rack by passing through an installation rack. The transport robot includes a rack portion, a chassis, a bracket, and an operating unit. The rack portion is configured to hold the transported objects and is configured to pass through the installation rack as the transport robot moves. The chassis is configured to support the rack portion. The bracket is arranged on a first end side in the left-right direction of the transport robot and extends upward from the chassis. The operating unit is configured to be mounted on the bracket.

[0005] In the above-mentioned transport robot, the chassis may be provided with a lifting platform configured to ascend and descend. The bracket may be arranged outside the lifting platform.

[0006] In the above-mentioned transport robot, the operation unit may be a touch panel monitor attached to the bracket. The touch panel monitor may extend from the bracket toward the second end side in the left-right direction of the transport robot.

[0007] In the above-mentioned transport robot, the shelf portion may be configured to be detachable from the chassis.

[0008] In the above-mentioned transport robot, when the shelf portion is removed from the chassis, the upper surface of the lifting platform may be configured to be used as a placement surface for placing the truck.

[0009] In the above-mentioned transport robot, the shelf portion may include a base plate, a frame, and a shelf. The base plate may be configured to be detachably fixed to the chassis. The frame may be arranged on the first end side in the left-right direction of the transport robot and extend upward from the base plate. The shelf may be supported by the frame and extend from the frame toward the second end side in the left-right direction of the transport robot.

[0010] The transport robot may further include a transfer mechanism provided to the shelf portion. The transfer mechanism may be a rod member extending in the left-right direction of the transport robot. When the transport robot passes the mounting shelf, the transfer mechanism may be configured to contact the transported object, so that the transported object is transferred between the transport robot and the mounting shelf. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Features, advantages, and technical and industrial significance of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings, wherein like reference numerals represent like elements, and wherein:

[0012] Figure 1 is a perspective view illustrating the overall configuration of a transport robot according to an embodiment;

[0013] Figure 2 is a perspective view illustrating the configuration of a transport robot transporting a truck;

[0014] Figure 3 is a front view illustrating the configuration of a transport robot transporting a truck;

[0015] Figure 4 is a side view illustrating the configuration of a transport robot transporting a truck;

[0016] Figure 5 is a perspective view illustrating the configuration of the transport robot in a state where a shelf portion is mounted;

[0017] Figure 6 is a front view illustrating the configuration of the transport robot in a state where the shelf portion is mounted;

[0018] Figure 7 is a side view illustrating the configuration of the transport robot in a state where the shelf portion is mounted;

[0019] Figure 8 is a top view used to describe the loading operation in the rack mode;

[0020] Figure 9 is a top view for describing a loading operation in the rack portion mode; and

[0021] Figure 10 It is a top view used to describe the loading operation in the rack section mode. DETAILED DESCRIPTION

[0022] The present disclosure will be described below by way of examples, but it should be noted that the present disclosure is not limited to the following examples. As means for solving the problems, the configurations described in the examples are not all indispensable.

[0023] Figure 1 is a perspective view of the overall structure of the transport robot 100 according to this embodiment. In the following description, the XYZ orthogonal coordinate system will be used as appropriate. In this case, the X direction is the front-to-back direction of the transport robot 100, the Y direction is the left-to-right direction, and the Z direction is the vertical up-down direction. More specifically, the +X direction is the forward direction of the transport robot 100, and the -X direction is the backward direction of the transport robot 100. The +Y direction is the left direction of the transport robot 100, and the -Y direction is the right direction of the transport robot 100. The +Z direction is the vertically upward direction, and the -Z direction is the vertically downward direction.

[0024] Note that the transport robot 100 can move in the forward direction and the backward direction. That is, the wheels 111 ( Figures 2 to 7 ) enables the transport robot 100 to move in the forward direction, and its reverse rotation enables the transport robot 100 to move in the backward direction. Changing the rotation speed of the left and right wheels 111 enables the transport robot 100 to turn left or right.

[0025] The transport robot 100 includes a chassis 110, a frame 120, and an operating unit 130. The chassis 110 is equipped with wheels 111 (from Figure 1 The transport robot 100 includes a chassis 110 that rotatably holds wheels 111. The chassis 110 may also be equipped with various sensors, such as cameras and distance sensors. The description herein assumes that the transport robot 100 is an autonomous mobile robot. However, the transport robot 100 may also be a mobile robot that moves in response to user operations.

[0026] The chassis 110 accommodates the transport objects 400 ( Figure 5 ) of the lifting mechanism 140. The lifting mechanism 140 is arranged on the upper surface side of the chassis 110. The lifting mechanism 140 is a lifting platform that is configured to be able to rise and fall. The chassis 110 is provided with a lifting motor and a guide mechanism. The upper surface of the lifting mechanism 140 is used as a place to place the truck 500 ( Figures 2 to 4 The lifting mechanism 140 has a lifting mechanism for lifting the truck 500. The space above the lifting mechanism 140 is used as a loading space for loading the transport object 400.

[0027] The bracket 120 is attached to the chassis 110. The bracket 120 is a rod-shaped member extending upward from the chassis 110. Here, the bracket 120 is formed in a cylindrical shape with the Z direction as the longitudinal direction. The longitudinal direction of the bracket 120 is set to be parallel to the Z direction. The bracket 120 is arranged on the outside of the lifting mechanism 140. That is, the bracket 120 is arranged so as not to interfere with the lifting operation of the lifting mechanism 140. The bracket 120 is arranged on the first end side in the Y direction (left-right direction) of the chassis 110 (transport robot 100). The bracket 120 is attached near the right front corner of the chassis 110. The bracket 120 is set at the ends of the chassis 110 located on the +X side and the -Y side on the XY plane.

[0028] The bracket 120 supports the operating unit 130. The operating unit 130 is attached near the upper end of the bracket 120. Therefore, the operating unit 130 can be installed at a height at which the user can easily operate. That is, the bracket 120 extends from the chassis 110 to a height at which the user in a standing state can easily operate. The operating unit 130 extends from the bracket 120 to the +Y side. In other words, the operating unit 130 extends from the bracket 120 toward the second end side in the left-right direction of the chassis 110 (transport robot 100). The operating unit 130 is arranged in the middle of the left-right direction of the chassis 110.

[0029] The operating unit 130 has a touch panel monitor for receiving user operations, etc. Of course, the operating unit 130 may also have a microphone for audio input, etc. The monitor of the operating unit 130 faces away from the chassis 110. That is, the display surface (operation surface) of the operating unit 130 is the surface on the +X side. The operating unit 130 can be configured so as to be detachable from the bracket 120. That is, a holder for holding the touch panel can be attached to the bracket 120. The user can input the transport destination of the transported object 400, transport information about the transported object 400, etc. by operating the operating unit 130. In addition, the operating unit 130 can display to the user the content about the transported object 400 being transported and the transported object 400 planned to be transported, information about the destination to which the transported object 400 is to be transported, etc.

[0030] The user places the transport object 400 in the truck 500 placed on the transport robot 100 and requests its transportation. The transport robot 100 autonomously travels to the set destination and thus transports the transport object 400. In other words, the transport robot 100 performs a transport mission (hereinafter, also referred to as a "mission") of the goods. In the following description, the location where the transport object 400 is loaded will also be referred to as the "transportation source" or "loading location", and the location to which the transport object 400 is delivered will also be referred to as the "transportation destination" or "destination".

[0031] In one exemplary scenario, a transport robot 100 travels within a general hospital with multiple clinical departments. The transport robot 100 transports accessories, consumables, medical equipment, and the like between clinical departments. For example, the transport robot 100 delivers a transported item 400 from a nurse's station in one clinical department to a nurse's station in another clinical department. Alternatively, the transport robot 100 delivers a transported item 400 from a storage room for accessories and medical equipment to a nurse's station in a clinical department. The transport robot 100 also delivers medications prepared in the pharmacy to the clinical department or patient for whom the medication is intended.

[0032] Examples of transported items 400 include medications, consumables such as bandages, specimens, examination instruments, medical equipment, hospital food, and accessories such as stationery. Examples of medical equipment include blood pressure monitors, blood transfusion pumps, syringe pumps, foot pumps, nurse call buttons, bed exit sensors, low-pressure continuous inhalers, electrocardiogram monitors, medication infusion controllers, enteral nutrition pumps, ventilators, cuff pressure gauges, touch sensors, aspirators, nebulizers, pulse oximeters, resuscitators, sterile equipment, and ultrasound machines. Meals such as hospital food and examination meals can also be transported. Furthermore, the transport robot 100 can transport used equipment and tableware after meals. When the transport destination is on a different floor, the transport robot 100 can use an elevator or other means to travel.

[0033] like Figures 2 to 4 As shown, the transport robot 100 can hold the truck 500 through the lifting mechanism 140. The truck 500 accommodates the transport object 400. Figures 5 to 7 As shown, the transport robot 100 can transport the transport object 400 without using the truck 500. Figures 5 to 7 In the illustrated state, the transfer shelf portion 200 is fixed to the chassis 110 . Figures 2 to 4 The state shown is called "first mode" or "truck mode", and Figures 5 to 7 The state shown is referred to as "second mode" or "shelf mode."

[0034] In the rack mode, the rack section 200 is fixed to the chassis 110. By removing the rack section 200 from the chassis 110, the mode is changed to the truck mode. By attaching the rack section 200 to the chassis 110, the mode is changed to the rack mode. In other words, the rack section 200 is used as a transfer rack that can be detachably arranged on the chassis 110.

[0035] Truck Mode

[0036] Will refer to Figures 2 to 4 Describe the truck model. Figure 3As shown, the space S that the chassis 110 enters is located below the truck 500. In other words, the chassis 110 can enter the space S directly below the truck 500. Note that when loading the truck 500 onto the chassis 110, the transport robot 100 moves in the -X direction and enters directly below the truck 500. The chassis 110 enters directly below the truck 500 from the side in the front-to-back direction where the bracket 120 is not located. Therefore, the truck 500 can be loaded without the bracket 120 interfering with the truck 500. In other words, the bracket 120 is attached near the corner of the chassis 110 so as not to interfere with the truck 500.

[0037] Although the truck 500 is shown as a cart with wheels 502, the form and structure of the truck 500 are not particularly limited. The truck 500 accommodates the transported object 400 therein. The truck 500 may have an openable and closable lid 501. By opening the lid 501, the user can load and unload the transported object 400.

[0038] The loading operation of the truck 500 will now be described. When the chassis 110 enters the space S directly below the truck 500, the lifting mechanism 140 rises. Consequently, the lifting platform, which is the upper surface of the lifting mechanism 140, comes into contact with the truck 500. The lifting mechanism 140 can raise and lower the truck 500. Specifically, when the lifting mechanism 140 rises, the wheels 502 are lifted off the floor surface, and the truck 500 is loaded onto the chassis 110.

[0039] When the truck 500 is to be unloaded from the chassis 110, the lifting mechanism 140 is lowered. The wheels 502 come into contact with the floor surface, and the upper surface of the lifting mechanism 140 separates from the truck 500. The truck 500 is thus placed on the floor surface. In this manner, the truck 500 can be unloaded from the chassis 110. Note that the chassis 110 is provided with four wheels 111. The four wheels 111 are left and right front wheels and left and right rear wheels. By independently controlling the rotation direction and speed of the wheels 111, the transport robot 100 travels along the desired route. Some of the four wheels 111 can be drive wheels, and the remaining can be driven wheels.

[0040] Shelf Mode

[0041] Next, we will refer to Figures 5 to 7 The structure in the shelf mode is described. The shelf portion 200 is set upward from the chassis 110. The shelf portion 200 is attached to the chassis 110. Therefore, the chassis 110 supports the shelf portion 200. The shelf portion 200 includes a shelf 210, a frame 220, and a base plate 240. The transport robot 100 can be moved by passing through the installation shelf 300 ( Figures 8 to 10), transfer the transported object 400 to the installation rack 300, and transfer the transported object 400 from the installation rack 300, which will be described later. That is, the transport robot 100 can receive the transported object 400 on the installation rack 300 by passing through the installation rack 300. Alternatively, the transport robot 100 can transfer the transported object 400 from the shelf portion 200 to the installation rack 300 by passing through the installation rack 300.

[0042] The shelf 210 is a plate-like member arranged along the XY plane. Figures 5 to 7 In the embodiment, the shelf section 200 is provided with two shelves 210. The transported object 400 is placed on the shelves 210. That is, the shelves 210 support the transported object 400. The two shelves 210 are arranged at different heights. The transported object 400 is placed on each of the two shelves 210. That is, the two shelves 210 are separated in the Z direction by a height greater than the height of the transported object 400.

[0043] Despite Figures 5 to 7 Two shelves 210 are shown in the figure, but the number of shelves 210 is not particularly limited. The number of shelves 210 can be one or three or more. The shelves 210 are arranged directly above the chassis 110. That is, in the XY plane view, the shelves 210 overlap the chassis 110. The shelves 210 are arranged upward from the lifting mechanism 140. In the rack mode, the transported objects 400 are transferred without the lifting mechanism 140 being operated.

[0044] The base plate 240 is a plate-shaped member arranged along the XY plane. The base plate 240 is attached to the upper surface of the lifting mechanism 140. The base plate 240 is arranged on the -X side of the bracket 120. For example, the base plate 240 can be fixed to the chassis 110 using a fixing device such as a bolt.

[0045] The frame 220 is attached to the base plate 240. The base plate 240 supports the frame 220. The frame 220 is attached to the base plate 240 at the -Y end (the first end in the left-right direction of the transport robot 100). The frame 220 extends upward from the base plate 240. In other words, the frame 220 is arranged upward from the right end of the chassis 110. The frame 220 is arranged on the -X side of the bracket 120.

[0046] The frame 220 supports the shelf 210. The frame 220 is attached to the chassis 110 outside the lifting mechanism 140. The frame 220 extends upward outside the lifting mechanism 140. The shelf 210 extends from the frame 220 to the +Y side (the second end side). In other words, the shelf 210 is arranged so as to protrude from the frame 220 to the +Y side. On the XY plane, the shelf 210 has approximately the same size as the chassis 110.

[0047] The rack section 200 transfers the transported object 400 to the installation rack 300, and transfers the transported object 400 from the installation rack 300. The installation rack 300 is set in the facility using the transport robot 100. The transported object 400 placed on the installation rack 300 is transferred to the rack section 200. Alternatively, the transported object 400 placed on the rack section 200 is transferred to the installation rack 300. The frame 220 is provided with a transfer mechanism 230 for transferring the transported object 400. The transfer mechanism 230 is a rod-shaped member extending in the +Y direction.

[0048] When the transport robot 100 passes the mounting rack 300, the transported object 400 is transferred. The transported object 400 can be transferred between the rack section 200 and the mounting rack 300 without using an actuator for transfer. That is, there is no need to set a transfer robot arm for the mounting rack 300 or the transport robot 100. Assembling the transport robot 100 with the rack section 200 makes it possible to easily and quickly load and unload the transported object 400. In addition, when the transported object 400 is large in volume, or when the number of the transported objects 400 is large, a truck 500 having a larger transport capacity than the rack section 200 can be used.

[0049] Next, we will refer to Figures 8 to 10 The loading of transport objects 400 in rack mode is described. Figures 8 to 10 is a top view for describing the operation of the transport robot 100 . Figures 8 to 10 300 is a top view showing how the transport object 400 placed on the mounting rack 300 is transferred to the transport robot 100. Note that Figures 8 to 10 It is a moderately simplified diagram. Figure 8 The figure shows a state before the transport object 400 is transferred to the shelf section 200, and Figure 9 The figure shows the state during its transfer. Figure 10 The figure shows the state after the transfer.

[0050] When the transport robot 100 passes by the installation rack 300, the transported object 400 is transferred from the installation rack 300 to the shelf section 200. The installation rack 300 includes a shelf 310 and a frame 320. The shelf 310 has a different height from the shelf 210 of the shelf section 200. For example, the shelf 210 is arranged at a position lower than the shelf 310. Therefore, the shelf 210 passes under the shelf 310. When the transport robot 100 travels, the shelf section 200 passes by the installation rack 300. Note that the installation rack 300 can have a plurality of shelves 310.

[0051] The shelf 310 is attached to the frame 320. The frame 320 supports the shelf 310. The frame 320 is provided at the +Y side end of the shelf 310. The shelf 310 extends from the frame 320 toward the -Y side. The shelf 310 protrudes from the frame 320 toward the -Y side. The shelf 310 is arranged on the +Y side of the rack 120. In other words, the transport robot 100 travels along the path so that the rack 120 does not collide with the mounting rack 300.

[0052] Figure 8 The figure shows a state before the transport robot 100 passes by the mounting rack 300. In this case, the transport object 400 is placed on the shelf 310. Figure 9 The figure shows the transport robot 100 in the middle of passing the installation rack 300. That is, Figure 9 The diagram shows the transport robot 100 transferring an object 400 . Figure 10 The diagram shows the transport robot 100 in a state after having passed through the installation rack 300. Therefore, Figure 10 The diagram shows the transport robot 100 transporting an object 400 .

[0053] Here, the transport robot 100 moves straight in the +X direction. Figure 8 In the embodiment, the rack 300 is installed in front of the transport robot 100. That is, in Figure 8 In FIG, the transport robot 100 is located at the -X side of the transport object 400. Figure 9 In the XY plane view, the installation rack 300 overlaps with the transport robot 100. That is, in Figure 9 In FIG, the transport robot 100 and the transport object 400 are at the same position on the XY plane. Figure 10 In FIG, the mounting rack 300 is backward in the traveling direction of the transport robot 100. That is, in Figure 10 , the transport robot 100 travels on the +X side of the transported object 400 .

[0054] The shelf unit 200 is provided with a transfer mechanism 230 for receiving the transport object 400. Figure 8 The state shown starts moving in the +X direction, which results in Figure 9 For example, in Figure 9 In the illustrated configuration, the transfer mechanism 230 is in contact with the transported object 400. The transported object 400 is transferred by the transfer mechanism 230 being in contact with the transported object 400. Note that the transfer mechanism 230 may be in contact with the shelf portion 200 instead of the transported object 400. Alternatively, the transfer mechanism 230 may be provided on the mounting shelf 300. A detailed description of the transfer mechanism 230 will be omitted.

[0055] When the transport robot 100 Figure 9 The state shown starts when traveling in the +X direction, which results in Figure 10 The structure shown. Figure 10 In the embodiment of the present invention, the transported object 400 is placed on the shelf section 200. For example, when the transport robot 100 moves while the transfer mechanism 230 is in contact with the transported object 400, the transported object 400 moves. As the transport robot 100 moves, the transported object 400 also moves. As the transport robot 100 moves, the transported object 400 is pushed off the shelf 310. When the transport robot 100 passes by the mounting shelf 300, the transported object 400 is pushed off the shelf 310 and the transported object 400 is transferred from the shelf 310 to the shelf 210.

[0056] In this manner, the transport robot 100 in rack mode can transfer the transported object 400 on the shelf 310 to the shelf 210 by passing the mounting shelf 300. In other words, the transport robot 100 can move to transfer the transported object 400. This eliminates the need for an arm mechanism or the like for transferring the transported object. Therefore, the transported object 400 can be transferred using a simple configuration.

[0057] The bracket 120, which supports the operating unit 130, extends upward from the chassis 110. The bracket 120 is arranged on the first end side of the transport robot 100 in the left-right direction. The bracket 120 is arranged offset to the right or left side from the center in the left-right direction. This allows the transport robot 100 to pass by the installation rack 300 without the bracket 120 coming into contact with the installation rack 300. The transported object 400 can be transferred without interference from the bracket 120.

[0058] For example, if the bracket 120 is installed in the middle of the left-right direction, the bracket 120 will hit the mounting rack 300 when the transport robot 100 passes by the mounting rack 300. In this arrangement, the left-right size of the rack section 200 must be reduced to prevent the bracket 120 from contacting the mounting rack 300. Therefore, transporting a large transport object 400 will be difficult.

[0059] In contrast, in the transport robot 100 according to this embodiment, the size of the shelf portion 200 is approximately the same as the size of the chassis 110 in the left-right direction. In other words, almost the entire space directly above the chassis 110 can be used as loading space. Therefore, the loading capacity of the transported object 400 can be increased, thereby achieving efficient transportation.

[0060] As described above, the bracket 120 protrudes upward from the right end of the chassis 110. Of course, the position of the bracket 120 can be reversed. For example, the bracket 120 can extend upward from the left end of the chassis 110. In this case, the arrangement position relationship between the mounting rack 300 and the shelf portion 200 will be reversed. It is sufficient that the bracket 120 is arranged on the first end side or the second end side of the chassis 110 in the left-right direction and extends upward from the chassis 110.

[0061] According to this embodiment, the rack portion 200 can pass through the mounting rack 300 without the bracket 120 coming into contact with the mounting rack 300. The bracket 120 does not interfere with the transfer, thus simplifying the transfer. Furthermore, the entire space above the chassis 110 can be used as loading space, thereby increasing the loading capacity. Consequently, transportation efficiency can be improved.

[0062] The touch panel monitor as the operating unit 130 is attached to the bracket 120 so as to extend from the bracket 120 toward the left end side (the second end side). Therefore, the operating unit 130 is arranged in the middle of the chassis 110 in the left-right direction. For example, the operating unit 130 is arranged in the middle in the left-right direction, at the front end or the rear end of the transport robot 100 in the traveling direction. Therefore, the transport robot 100 can travel without the interference of the operating unit 130. Of course, when the bracket 120 is set at the left end, the operating unit 130 extends to the right.

[0063] The bracket 120 is disposed at a first end portion of the chassis 110 in the left-right direction, and the operating unit 130 extends from the bracket 120 toward a second end portion in the left-right direction. Therefore, the user can operate the operating unit 130 while standing in the middle of the transport robot 100 in the left-right direction. Therefore, operability can be improved.

[0064] Note that, although the operation of transferring the transported object 400 from the installation rack 300 to the rack section 200 has been described above, the operation of transferring the transported object 400 from the rack section 200 to the installation rack 300 is similar. That is, when transferring the transported object 400 on the rack section 200 to the installation rack 300, all the transport robot 100 needs to do is pass through the installation rack 300. Therefore, a detailed description will be omitted.

[0065] Note that the present invention is not limited to the above-described embodiments, and appropriate modifications may be made.

Claims

1. A transport robot configured to transfer a transport object to and from an installation rack by passing through an installation rack, the transport robot being characterized by comprising: a shelf portion configured to hold the transport object and configured to be moved by the transport robot through the installation shelf; a chassis configured to support the shelf portion; a bracket arranged on a first end side in the left-right direction of the transport robot and extending upward from the chassis; an operating unit configured to be mounted on the bracket; as well as a transfer mechanism, which is provided to the shelf portion, wherein: The shelf portion includes a base plate, a frame and a shelf; The base plate is configured to be detachably fixed to the chassis; The frame is arranged on the first end side in the left-right direction of the transport robot and extends upward from the base plate; The shelf is supported by the frame, extends from the frame toward the second end side in the left-right direction of the transport robot, and is arranged at a position lower than the shelf of the mounting rack; The transfer mechanism is a rod member extending in the left-right direction of the transport robot; and When the transport robot passes by the mounting rack, the shelf of the rack portion passes under the shelf of the mounting rack, and the transfer mechanism is configured to contact the transport object so that the transport object is transferred between the transport robot and the mounting rack.

2. The transport robot according to claim 1, characterized in that: The chassis is provided with a lifting platform configured to rise and fall; and The bracket is arranged on the outer side of the lifting platform.

3. The transport robot according to claim 1 or 2, characterized in that: The operating unit is a touch panel monitor attached to the bracket; and The touch panel monitor extends from the bracket toward a second end side in the left-right direction of the transport robot.

4. The transport robot according to claim 2, characterized in that: The shelf portion is configured to be detachable from the chassis.

5. The transport robot according to claim 4, characterized in that: When the rack portion is removed from the chassis, the upper surface of the lifting platform is configured to be used as a placement surface for placing a truck.

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