Abstract: A cart includes a carriage, a right front wheel, a left front wheel, a right rear wheel and a left rear wheel, and a suspension mechanism. The suspension mechanism includes a steering shaft, a link member, a tie rod, a holding member, and a buffer member. When the cart is viewed from behind, a lower space is defined under the carriage. The lower space has a width of ? or more of a distance between a left side surface of the right front wheel and a right side surface of the left front wheel between the right front wheel and the left, front wheel. The lower space between the right rear wheel and the left rear wheel has the width of ? or more of the distance between a left side surface of the right rear wheel and a right side surface of the left rear wheel.

Abstract: A cart may include a body unit, a ground contact unit supported by the body unit, a prime mover configured to drive the ground contact unit, a first UWB anchor including a first antenna and a second antenna and configured to receive a beacon signal from a UWB tag, a second UWB anchor configured to receive the beacon signal from the UWB tag, and a control device configured to execute a following operation of causing the cart to follow the UWB tag by driving the prime mover. The control device may be configured to calculate a first distance which is a distance between the first UWB anchor and the UWB tag and a first tag angle which is an angle of the UWB tag relative to the first UWB anchor by using the beacon signal received by the first antenna and the beacon signal received by the second antenna.

Abstract: A cart may include a vehicle body; wheels supported by the vehicle body and configured to be in contact with a ground; a prime mover configured to drive the wheels; a handle configured to be gripped by a user walking behind the vehicle body; and a control unit configured to control an operation of the prime mover. When the cart performs a turning motion, as compared to a target vehicle speed for a turning motion in which a turning radius of the vehicle body is large, the control unit may be configured to set a slower target vehicle speed for a turning motion in which a turning radius of the vehicle body is small.

Abstract: A cart may include: a carriage; a wheel supported by the carriage and touching ground; a holding member rotatably supported by the carriage about a steering axis and rotatably supporting the wheel about a rotation axis; a steering handle to be gripped by a user; an input sensor configured to detect an operation on the steering handle by the user; a steering motor configured to be actuated in response to the operation by the user detected by the input sensor; and a transmission mechanism connecting the steering motor and the holding member and configured to rotate the holding member about the steering axis in response to actuation of the steering motor. The steering handle and the transmission mechanism may be mechanically separated, and the transmission mechanism may include a torque limiter interposed between the steering motor and the holding member.

Abstract: A rebar tying robot configured to tie a plurality of first rebars and a plurality of second rebars intersecting the plurality of first rebars at points where the plurality of first rebars and the plurality of second rebars intersect. The rebar tying robot may include a rebar tying machine, a conveying unit configured to convey the rebar tying machine, and a control unit configured to control an operation of the conveying unit. The conveying unit may include a crawler configured to move on the plurality of first rebars and the plurality of second rebars.

Abstract: A rebar tying tool may include a holder, a stopper, a driving roller, and a driven roller. The stopper may be configured to switch between a prohibiting state in which the stopper prohibits a reel from detaching from the holder and an allowing state in which the stopper allows the reel to detach from the holder. The driving roller may be configured to rotate. The driven roller may be configured to switch between a clamped state and a non-clamped state, the wire may be clamped between the driving roller and the driven roller when the driven roller is in the clamped state, and the wire may not be clamped between the driving roller and the driven roller when the driven roller is in the non-clamped state. The driven roller may be in the non-clamped state at all times while the stopper is in the allowing state.

Abstract: A rebar tying robot configured to tie a plurality of first rebars and a plurality of second rebars intersecting the plurality of first rebars at points where the plurality of first rebars and the plurality of second rebars intersect. The rebar tying robot may include a rebar tying machine, a conveying unit configured to convey the rebar tying machine, and a control unit configured to control an operation of the conveying unit. The conveying unit may include a crawler configured to move on the plurality of first rebars and the plurality of second rebars.

Abstract: A cart includes a carriage, a right front wheel, a left front wheel, a right rear wheel and a left rear wheel, and a suspension mechanism. The suspension mechanism includes a steering shaft, a link member, a tie rod, a holding member, and a buffer member. When the cart is viewed from behind, a lower space is defined under the carriage. The lower space has a width of ? or more of a distance between a left side surface of the right front wheel and a right side surface of the left front wheel between the right front wheel and the left, front wheel. The lower space between the right rear wheel and the left rear wheel has the width of ? or more of the distance between a left side surface of the right rear wheel and a right side surface of the left rear wheel.

Abstract: A cart may include: a carriage; a wheel supported by the carriage and touching ground; a holding member rotatably supported by the carriage about a steering axis and rotatably supporting the wheel about a rotation axis; a steering handle to be gripped by a user; an input sensor configured to detect an operation on the steering handle by the user; a steering motor configured to be actuated in response to the operation by the user detected by the input sensor; and a transmission mechanism connecting the steering motor and the holding member and configured to rotate the holding member about the steering axis in response to actuation of the steering motor. The steering handle and the transmission mechanism may be mechanically separated, and the transmission mechanism may include a torque limiter interposed between the steering motor and the holding member.

Abstract: A rebar tying tool may include a holder, a stopper, a driving roller, and a driven roller. The stopper may be configured to switch between a prohibiting state in which the stopper prohibits a reel from detaching from the holder and an allowing state in which the stopper allows the reel to detach from the holder. The driving roller may be configured to rotate. The driven roller may be configured to switch between a clamped state and a non-clamped state, the wire may be clamped between the driving roller and the driven roller when the driven roller is in the clamped state, and the wire may not be clamped between the driving roller and the driven roller when the driven roller is in the non-clamped state. The driven roller may be in the non-clamped state at all times while the stopper is in the allowing state.

Abstract: The disclosure herein discloses a rebar tying tool that ties plural rebars using a wire. The rebar tying tool includes a housing and a twisting motor, and may include a twisting mechanism that twists the wire around the plural rebars by the twisting motor. The twisting mechanism may include a screw shaft, a gripping member that grips the wire in cooperation with rotation of the screw shaft, a first reduction mechanism that reduces and transmits rotation of the twisting motor to a relay shaft, and a second reduction mechanism that reduces and transmits rotation of the relay shaft to the screw shaft. The first reduction mechanism may be a coaxial reduction mechanism, and the second reduction mechanism may be a parallel-axis reduction mechanism.

Abstract: A tying machine disclosed herein includes a feed mechanism. The feed mechanism includes a feed roller that feeds a tying string; a feed motor that rotates the feed roller; a cover disposed between the feed roller and the feed motor, and including a through hole; and a suppression member that suppresses movement of dust from a feed roller side to a feed motor side via the through hole. Another tying machine disclosed herein includes a reel on which a tying string is wound; a brake member that engages with the reel to brake the reel; and an actuator that drives the brake member. The brake member is interposed between the reel and the actuator. Yet another tying machine disclosed herein includes a housing; a reel on which a tying string is wound; a magnet that rotates integrally with the reel; and a magnetic sensor attached to the housing.

Abstract: A rebar tying machine configured to tie rebars with a wire is disclosed. The rebar tying machine may include a housing. The hosing may include a communication portion that allows iron powder to move therethrough from outside to inside of the housing. The rebar tying machine may include a collecting magnet configured to collect the iron powder.

Abstract: A rebar tying tool may include a controller configured to selectively execute one of a plurality of control modes including a single-action control mode and a repetitive-action control mode. While the controller executes the single-action control mode, a tying mechanism may perform a tying operation in response to an activation of a manipulation member by a user. While the controller executes the repetitive-action control mode, the tying mechanism may perform the tying operation in response to a detection of the at least one of rebars by a detection mechanism.

Abstract: A rebar tying tool configured to tie plural rebars using a wire is disclosed herein. The rebar tying tool may include a reel supporting mechanism configured to switch between a first state of detachably supporting a reel on which the wire is wound and a second state of undetachably supporting the reel; a wire feeding mechanism configured to feed the wire from the reel; and an openable cover that at least partially covers at least one of the reel supporting mechanism and the wire feeding mechanism. The reel supporting mechanism may switch from the first state to the second state by a user operation of closing the cover, and/or may switch from the second state to the first state by a user operation of opening the cover.

Abstract: A tying machine disclosed herein includes a feed mechanism. The feed mechanism includes a feed roller that feeds a tying string; a feed motor that rotates the feed roller; a cover disposed between the feed roller and the feed motor, and including a through hole; and a suppression member that suppresses movement of dust from a feed roller side to a feed motor side via the through hole. Another tying machine disclosed herein includes a reel on which a tying string is wound; a brake member that engages with the reel to brake the reel; and an actuator that drives the brake member. The brake member is interposed between the reel and the actuator. Yet another tying machine disclosed herein includes a housing; a reel on which a tying string is wound; a magnet that rotates integrally with the reel; and a magnetic sensor attached to the housing.

Abstract: A rebar tying tool configured to tie plural rebars using a wire is disclosed herein. The rebar tying tool may include a reel supporting mechanism configured to switch between a first state of detachably supporting a reel on which the wire is wound and a second state of undetachably supporting the reel; a wire feeding mechanism configured to feed the wire from the reel; and an openable cover that at least partially covers at least one of the reel supporting mechanism and the wire feeding mechanism. The reel supporting mechanism may switch from the first state to the second state by a user operation of closing the cover, and/or may switch from the second state to the first state by a user operation of opening the cover.

Abstract: A rebar tying tool configured to tie plural rebars using a wire is disclosed herein. The rebar tying tool may include a reel supporting mechanism configured to switch between a first state of detachably supporting a reel on which the wire is wound and a second state of undetachably supporting the reel; a wire feeding mechanism configured to feed the wire from the reel; and an openable cover that at least partially covers at least one of the reel supporting mechanism and the wire feeding mechanism. The reel supporting mechanism may switch from the first state to the second state by a user operation of closing the cover, and/or may switch from the second state to the first state by a user operation of opening the cover.

Abstract: The disclosure herein discloses a rebar tying tool that ties plural rebars using a wire. The rebar tying tool includes a housing and a twisting motor, and may include a twisting mechanism that twists the wire around the plural rebars by the twisting motor. The twisting mechanism may include a screw shaft, a gripping member that grips the wire in cooperation with rotation of the screw shaft, a first reduction mechanism that reduces and transmits rotation of the twisting motor to a relay shaft, and a second reduction mechanism that reduces and transmits rotation of the relay shaft to the screw shaft. The first reduction mechanism may be a coaxial reduction mechanism, and the second reduction mechanism may be a parallel-axis reduction mechanism.