Tro 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. More specifically, it relates to a trolley elevator safety device. More specifically, the present invention relates to a trolley elevator safety device that detects the inclination of a container holder (lifting platform) used to lift and lower a dough box, which is used to store and transport dough, and stops the operation of the trolley elevator. [Background technology]

[0002] The invention described in Patent Document 1 is known as a lifter that is said to stop the raising and lowering of the container holder when parts that make up the power transmission unit are damaged, thereby enabling damage to parts to be quickly detected 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, wherein a screw shaft is rotatably provided on the left and right columns, and a screw nut connected to the container holder is screwed onto the screw shaft, and wherein a power transmission unit transmits the power of one motor to each of the screw shafts of the left and right columns to lift and lower the container holder by rotating each of the screw shafts, A boss is provided on a side surface of the container holder, A support shaft is provided on an outer circumferential surface of a nut housing attached to the screw nut, and the support shaft is fitted into a central hole of the boss, The insertion length of the support shaft into the boss is 80 to 120 mm, "A lifter characterized in that, in a situation where the power of the motor is transmitted to only one of the screw shafts in the left and right columns when a component constituting the power transmission unit is damaged, the container holder is stopped in a tilted state with respect 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] In the lifter according to the invention described in Patent Document 1, the container holder stops in a state where it is tilted with respect to the horizontal. In other words, the container holder does not stop unless it is tilted with respect to the horizontal. [Means for solving the problem]

[0005] The trolley elevator of this invention is, A vertical frame provided parallel to the vertical direction; A dough box for storing the contents; a container holder for holding a dough box between the vertical frames; A rotating shaft (screw) is provided on each vertical frame and rotates to raise and lower the container holder. A sensor that detects the inclination of the container holder and transmits a warning Equipped with.

[0006] The trolley elevator of the present invention further comprises: Detects the rotation of the rotating shaft (screw), If the rotation of the rotating shaft can no longer be detected, the sensor detects the tilt of the container holder and transmits a warning. Equipped with.

[0007] The trolley elevator of the present invention further comprises: Detect the rotation of each axis, If only one of the rotating shafts detects rotation, it detects the tilt of the container holder (lifting platform) and transmits a warning. Equipped with. Effect of the Invention

[0008] Due to the activation of the detection sensor, the raising and lowering of the container holder is stopped before the container holder actually tilts, i.e., before the container holder stops in a state inclined relative to the horizontal. [Brief description of the drawings]

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

[0010] An embodiment of the present invention will now 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. The vertical frame 11 consists of two frames that are vertically 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 vertically through the vertical frame 11. A 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. The bevel gear box 23 and the chain coupling 24 are mounted on the horizontal frame 21 adjacent to the motor 22, as shown in the figure. The drive shaft 25 is provided between both bevel gear boxes 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] Reference numeral 26 denotes a flange coupling, and 27 denotes a cam box. A limit switch 13 and a cam for stopping the container holder 32, which is the lifting platform, at a required position are built into the cam box 27. The cam box 27 detects the four positions of the lifting platform, the lifting end, the middle of the lifting, the lowering end, and the middle of the lowering, to detect the stopping position of the container holder 32, which is the lifting platform. 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 driving force 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 driving force transmitted to the drive shaft 25 is transmitted to the other chain coupling 24 and the 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 order to ensure safety in the event that the container holder 32, which is the lifting platform, does not stop at the uppermost position due to some 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 attached to bevel gear boxes 23 at their upper parts 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] A container holder (lifting platform) 32 that holds a container is provided in the dough container (dough box) 31 between the two vertical frames 11. The container holder 32 is disposed between the left and right vertical frames 11 to hold a 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 provided on each of the lower parts of the left and right vertical frames 11. The detection sensor 41 detects the presence or absence of rotation of the rotating shaft (screw) 12. The detection sensor 41 detects the presence or absence of rotation of the rotating shaft (screw) 12, thereby detecting the inclination of the container holder 32 and transmitting a warning. When the detection sensor 41 is no longer able to detect the rotation of the rotating shaft (screw) 12, it detects this as an inclination of the container holder and transmits a warning. When the detection sensor 41 detects the rotation of only one of the two rotating shafts (screws) 12, it detects the tilt of the container holder 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 box 31 accommodated on a lifting platform is raised and tipped over, causing the dough in the dough box 31 to flow down and be fed into a mixer 52 via the hopper. In the mixer 52, the dough that has flowed down is agitated.

[0020] The detection sensor 41 detects whether or not the rotating shaft (screw) 12 is rotating while the dough container (dough box) 31 with dough poured into it is attached to the container holder 32 and moves upward, thereby detecting the inclination 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 inclination of the container holder 32 and transmits a warning.

[0021] If the coupling 26, bevel gear box 23, screw 12, etc. are damaged and the rotation of the screw 12 cannot be detected, the inclination of the container holder 32 is detected, a warning is transmitted, and the motor is stopped in an emergency to prevent secondary damage. In particular, if only the driving side or the driven side is reached, the inclination of the container holder 32 is detected, a warning is transmitted, and the motor is brought to an emergency stop to prevent secondary damage. If the 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

1. A vertical frame provided parallel to the vertical direction; A dough box for storing the contents; a container holder for holding a dough box between the vertical frames; a rotating shaft provided on each of the vertical frames for raising and lowering the container holder by rotating the shaft; A sensor that detects the inclination of the container holder and transmits a warning A trolley elevator characterized by comprising:

2. Detects the rotation of the rotating shaft, If the rotation of the rotating shaft can no longer be detected, the sensor detects the tilt of the container holder and transmits a warning. The elevator according to claim 1, further comprising:

3. Detect the rotation of each axis, If only one of the rotating shafts detects rotation, it detects the tilt of the container holder and transmits a warning. The elevator according to claim 1, further comprising:

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