Toro Elevator

Abstract

To provide a tro elevator that stops a container holder from moving up and down before the container holder actually tilts by the activation of a detection sensor.SOLUTION: A tro elevator comprises vertical frames 11 provided parallel to each other in a vertical direction, a bread dough container (dough box) 31 that stores items to be stored, a container holder 32 that holds the bread dough container (dough box) 31 between the vertical frames 11, a rotation shaft (screw) 12 provided on each of the vertical frames 11 and raises and lowers the container holder 32 by the shaft rotation, and a detection sensor 41 that detects tilt of the container holder 32 and transmits warning. The detection sensor 41 detects the rotation of each rotation shaft (screw) 12, and detects tilt of the container holder and transmits warning when the rotation for one of the rotation shafts (screws) 12 is detected.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a trolley elevator, specifically to a trolley elevator safety device. More specifically, the present invention relates to a trolley elevator that raises and lowers a container holder (lifting platform) used to raise and lower dough containers for transporting dough stored in the container. The present invention relates to a trolley elevator safety device that detects the inclination of the container holder and stops the operation of the trolley elevator. [Background technology]

[0002] The invention described in Patent Document 1 is known as a lifter that stops the lifting and lowering of the container holder when a component constituting the power transmission unit is damaged, thereby enabling quick detection of damage to the component and preventing the occurrence of serious personal injury accidents. The invention describes a lifter comprising: "left and right columns; and a container holder disposed between the left and right columns for holding containers; a screw shaft is rotatably provided on the left and right columns; a screw nut connected to the container holder is threadedly engaged on the screw shaft; and a power transmission unit transmits the power of one motor to each of the screw shafts of the left and right columns, thereby lifting and lowering the container holder by the rotation of each screw shaft, a boss is provided on a side surface of the container holder; a support shaft that is fitted into a center hole of the boss is provided on an outer peripheral surface of a nut housing that is attached to the screw nut, The insertion length of the support shaft into the boss is 80 to 120 mm, "A lifter characterized in that, when a component constituting the power transmission unit is damaged, the power of the motor is transmitted to only one of the screw shafts in the left and right columns, and the container holder is stopped in a tilted state relative to the horizontal." [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 7150367 Summary of the Invention [Problem to be solved by the invention]

[0004] The lifter according to the invention described in Patent Document 1 stops when the container holder is tilted relative to the horizontal, that is, the lifter does not stop unless the container holder is tilted relative to the horizontal. [Means for solving the problem]

[0005] This invention 、 A vertical frame provided parallel to the vertical direction; a dough box for storing the contents; a container holder for holding a dough container (dough box) between the vertical frames; The vertical frame is provided with a rotating shaft that raises and lowers the container holder. Axle and a motor for driving the container holder; A detection sensor that detects the tilt of the container holder and transmits a warning Equipped with 、 When the detection sensor detects the rotation of both of the two rotating shafts, it determines that the rotating shafts are operating normally, and when it does not detect the rotation of either of the two rotating shafts, it determines that both shafts are stopped operating. A trolley elevator characterized in that the detection sensor detects the tilt of the container holder when only one of the two rotating shafts is rotating, transmits a warning, and makes an emergency stop on the motor. relates to. [Effects of the Invention]

[0008] The detection sensor is activated to stop the lifting and lowering of the container holder before the container holder actually tilts, i.e., before the container holder stops in a state tilted relative to the horizontal. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a front view of a trolley elevator configured in accordance with an embodiment of the present invention. FIG. [Figure 2]FIG. 1 is a left side view of a trolley elevator configured in accordance with an embodiment of the present invention. [Figure 3] FIG. 1 is a right side view of a trolley elevator configured in accordance with an embodiment of the present invention. [Figure 4] 1 is a plan view of a trolley elevator configured in accordance with an embodiment of the present invention. FIG. [Figure 5] 1 is a front view of a trolley elevator according to an embodiment of the present invention. FIG. [Figure 6] FIG. 6 is a right side view of the trolley elevator of FIG. 5 according to the embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0010] An embodiment of the present invention will be described with reference to the drawings. A is a trolley elevator according to an embodiment of the present invention. Reference numeral 11 denotes a vertical frame. The vertical frame 11 is also called a column. There are two vertical frames 11, which are set up parallel to each other and are installed, for example, on a dough conveying line in a food factory. Reference numeral 12 denotes a rotating shaft (screw). The rotating shaft (screw) 12 passes through the vertical frame 11 from top to bottom. Reference numeral 21 denotes a horizontal frame. The horizontal frame 21 connects the vertical frames 11 at the upper part.

[0011] Reference numeral 22 denotes a motor. The motor 22 is installed at one end of the horizontal frame 21. Reference numeral 23 denotes a bevel gear box, 24 denotes a chain coupling, and 25 denotes a drive shaft. The drive shaft 25 is made of a bevel gear. As shown in the figure, the bevel gear box 23 and the chain coupling 24 are installed on the horizontal frame 21 adjacent to the motor 22 in that order. The drive shaft 25 is provided between both bevel gearboxes 23 and the chain coupling 24. The chain coupling 24 constitutes a connecting portion that rotates both shafts of the rotating shaft (screw) 12 .

[0012] 26 is a flange coupling, and 27 is a cam box. A limit switch 13 and a cam for stopping the container holder 32, which is the lifting platform, at the required position are built into the cam box 27. The cam box 27 detects the stop position of the container holder 32, which is the lifting platform, by detecting four points: the lifting end, the middle of the lifting, the lowering end, and the middle of the lowering. The flange coupling 26 connects the output shaft of the bevel gear box 23 to the rotating shaft (screw) 12 and transmits power from the bevel gear box 23 to the rotating shaft (screw) 12.

[0013] The drive of the motor 22 is transmitted to a bevel gear box 23, a chain coupling 24, and a drive shaft 25, which is a bevel gear. The drive transmitted to the drive shaft 25 is then transmitted to the other chain coupling 24 and bevel gear box 23.

[0014] As shown in the figure, the limit switch 13 is provided on one of the vertical frames 11 below the horizontal frame 21, but at the upper part of the vertical frame 11. The limit switch 13 detects an overrun at the upper end. The limit switch 13 is also called an overrun limit switch, and serves to stop the lifting platform in case the container holder 32, which is the lifting platform, does not stop at the uppermost position due to some kind of trouble.

[0015] A rotating shaft 12 consisting of a screw thread shaft is provided inside the two left and right vertical frames (columns) 11. In this embodiment, the rotating shaft (screw) 12 consists of a rotatable screw shaft (main shaft or male screw). The screw shaft can also be a main shaft or a male screw. The rotating shafts (screws) 12 are each attached to a bevel gear box 23 at the top and rotated by being driven by a motor 22. The container holder 32 is raised and lowered by rotating the rotating shaft 12, which is a screw shaft. By rotating both rotating shafts 12, the container holder 32 is raised and lowered.

[0016] A dough container (dough box) 31 is a container for storing and transporting dough (dough), which is an object to be stored.

[0017] The dough container (dough box) 31 is provided with a container holder (lifting platform) 32 that holds the container between the two vertical frames 11. The container holder 32 is disposed between the left and right vertical frames 11 to hold the container. A dough box holder 33 prevents the dough box accommodated in the lifting platform from slipping off when the lifting platform moves up and down. Both ends of the container holder 32 are attached to both shafts. A container holder 32 is attached to both shafts, and the container holder 32 is raised and lowered by rotating both shafts.

[0018] As shown in FIG. 6, one detection sensor 41 is installed at each of the lower parts of the left and right vertical frames 11. The detection sensor 41 detects whether or not the rotating shaft (screw) 12 is rotating. By detecting whether or not the rotating shaft (screw) 12 is rotating, the detection sensor 41 detects the tilt of the container holder 32 and transmits a warning. When the detection sensor 41 is no longer able to detect the rotation of the rotating shaft (screw) 12, it detects that the container holder is tilted and transmits a warning. If the detection sensor 41 detects the rotation of only one of the two rotating shafts (screws) 12, it detects that the container holder is tilted and transmits a warning. In other words, when the detection sensor 41 detects the rotation of both rotating shafts (screws) 12, it determines that the rotating shafts (screws) 12 are operating normally, and when it detects no rotation of either rotating shaft (screw) 12, it determines that both shafts have stopped operating.

[0019] A hopper 51 is provided. A dough container (dough box) 31 accommodated on a lifting platform rises and falls, causing the dough in the dough container (dough box) 31 to flow down and be fed into a mixer 52 via the hopper. The mixer 52 agitates the dough that has flowed down.

[0020] The detection sensor 41 detects whether or not the rotating shaft (screw) 12 is rotating while the dough container (dough box) 31 into which dough has been poured is attached to the container holder 32 and moves upward, thereby detecting the tilt of the container holder 32 and transmitting a warning. When the detection sensor 41 is no longer able to detect the rotation of either of the rotating shafts (screws) 12, it detects that the container holder is tilted and transmits a warning.When the detection sensor 41 is no longer able to detect the rotation of either of the rotating shafts (screws) 12, it detects that the container holder is tilted and transmits a warning. The detection sensor 41 detects the tilt of the container holder 32 and transmits a warning.

[0021] If the coupling 26, bevel gear box 23, screw 12, etc. breaks and the rotation of the screw 12 can no longer be detected, the tilt of the container holder 32 is detected, a warning is transmitted, and the motor is brought to an emergency stop to prevent secondary damage. In particular, if only the driving side or the driven side is inclined, the tilt of the container holder 32 is detected, a warning is transmitted, the motor is stopped in an emergency, and secondary damage is prevented. If rotation of the screw 12 is not detected during a start command for the container holder 32, which is the lifting platform, the start command is turned off and the motor is stopped. Therefore, in this embodiment of the present invention, the detection sensor 41 stops the container holder 32 before it tilts. [Explanation of symbols]

[0022] 11 Vertical Frame 12 Rotating shaft (screw) 31 Dough box 32 Container holder 41 Detection sensor

Claims

[Claim 1] A vertical frame provided parallel to the vertical direction; a dough box for storing the contents; a container holder for holding a dough container (dough box) between the vertical frames; a rotation shaft provided on each of the vertical frames for raising and lowering the container holder by rotation of the shaft; a motor for driving the container holder; A detection sensor that detects the tilt of the container holder and transmits a warning Equipped with When the detection sensor detects the rotation of both of the two rotating shafts, it determines that the rotating shafts are operating normally, and when it does not detect the rotation of either of the two rotating shafts, it determines that both shafts are not operating. This trolley elevator is characterized in that when the detection sensor detects only one of the two rotation axes, it detects that the container holder is tilted, transmits a warning, and brings the motor to an emergency stop.

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