Gate lifting device

Abstract

To acquire a gate lifting device which has no noise generation or oil dispersion, is easy in maintenance, and enables a smooth operation.SOLUTION: A gate lifting device (4) of a mechanical multistory parking lot (1) includes: a gate (3) supported so as to move up / down; a belt-like hanging belt (6) connected to the gate; a rotary drum (41) around which the hanging belt is wound; and a motor (5) for rotating the rotary drum in a winding direction and an unwinding direction. By using the hanging belt for hanging the gate, generation of noise and oil dispersion can be prevented, maintenance becomes easy, and a smooth operation becomes possible.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a gate lifting device. [Background technology]

[0002] In conventional mechanical multi-storey car parks, gates are raised and lowered by winding up or rewinding the chains or wires that suspend the gates. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-133162 A [Patent Document 2] JP 2001-106039 A Summary of the Invention [Problem to be solved by the invention]

[0004] Oil is applied to the chains and wires during regular maintenance inspections to prevent wear and rust, but this oil can splash off the chains and wires and stain vehicles using the multi-storey parking garage.

[0005] In addition, the chains and wires are prone to making abnormal noises from the contact points with the sprockets and pulleys when the gate is opened or closed. Such abnormal noises tend to get louder as the chains and wires deteriorate over time. Parking equipment is operated for entry and exit operations all day depending on the convenience of the users. For example, abnormal noises generated during nighttime operation are the subject of complaints, so soundproofing measures are necessary.

[0006] Patent Document 1 shows the structure of a drum 102 provided with a single winding portion 103 that winds up a single cable 104 in multiple layers. Figure 7 shows a cross-sectional view of the winding drum described in Patent Document 1. The drum 102 is fixed integrally to a rotating shaft 101A of a motor 101.

[0007] Patent Document 2 discloses a structure of a two-strand multi-layer winding drum 202 having two winding sections 203A and 203B that independently wind up two left and right wires 204A and 204B that suspend a gate in multiple layers. FIG. 8 shows an enlarged view of a portion of the drawing disclosed in Patent Document 2, and shows a cross-sectional view of the winding drum. The winding drum 202 is fixed integrally to a rotating shaft 201A of a motor 201.

[0008] In the drums shown in Patent Documents 1 and 2, wires or cables are wound in multiple layers so that they overlap in the radial direction in a grooved winding section. These winding sections have a groove width set to be slightly wider than the outer diameter of the cable to prevent the cable from being randomly wound. Since wires or cables have a substantially circular cross section, when the wires or cables are wound in multiple layers in the radial direction in the winding section, they are not wound so that the centers of the circular cross sections are aligned in a row in the radial direction and overlap each other, but are wound with a shift in the groove width direction within the range of the groove width.

[0009] The wires and cables that suspend the heavy gate are subjected to a large tensile load, and the wires and cables that are wound so as to overlap in the radial direction may get caught or pinched within the groove width, becoming tangled in the drum and making it difficult for the gate to operate smoothly.

[0010] The present invention has been made in consideration of the above points, and its object is to provide a gate lifting device that does not generate abnormal noise or cause oil splashing, is easy to maintain, and enables smooth operation. [Means for solving the problem]

[0011] The gate lifting device of the present invention, which solves the above-mentioned problems, is a gate lifting device for a mechanical multi-story parking lot, and is characterized by having a gate that is supported so that it can be raised and lowered freely, a belt-shaped suspension belt connected to the gate, a rotating drum around which the suspension belt is wound, and a motor that rotates the rotating drum in the winding direction and the unwinding direction. Effect of the Invention

[0012] According to the present invention, since a band-shaped suspension belt is used, there is no generation of abnormal noise or oil scattering, and maintenance is easy and smooth operation is possible. [Brief description of the drawings]

[0013] [Figure 1] FIG. 1 is a front view of a mechanical multi-story parking lot equipped with a gate lifting device of a first embodiment. [Diagram 2] FIG. 2 is a structural explanatory diagram of the gate lifting device according to the first embodiment. [Diagram 3] An explanatory diagram of the structure of a winding pulley. [Figure 4] FIG. 6 is a structural explanatory diagram of a gate lifting and lowering device according to a second embodiment. [Diagram 5] An explanatory diagram of the structure of a winding pulley. [Figure 6] FIG. [Figure 7] FIG. [Figure 8] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] [First embodiment] Next, a first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a mechanical multi-storey car park equipped with a gate lifting device of the first embodiment.

[0015] The mechanical multi-story parking lot 1 has a structure that moves a pallet P that stores a vehicle V in the vertical and horizontal directions. The mechanical multi-story parking lot 1 has a frame 2 that is configured by combining multiple columns 2A and beams 2B made of steel or the like. The mechanical multi-story parking lot 1 is provided with a gate lifting device 4 that opens and closes the entrance and exit for the vehicle V stored on the pallet.

[0016] The gate lifting device 4 includes a gate 3 that is supported so that it can be raised and lowered freely, a belt-shaped hanging belt 6 connected to the gate 3, a rotating drum 41 around which the hanging belt 6 is wound, and a motor 5 that rotates the rotating drum 41 in the winding direction and the unwinding direction.

[0017] The gate 3 is supported between a pair of left and right pillars 2A so as to be vertically movable by guide rollers 31. A hanging belt 6 is connected to the gate 3.

[0018] The hanging belt 6 is a band-shaped body having a certain thickness and width, and has a laminated structure in which a core wire such as steel or aramid fiber is sandwiched between resin such as polyurethane. The hanging belt 6 has a pair of a first belt 61 and a second belt 62 that hang both ends of the gate 3. The first belt 61 and the second belt 62 are arranged so as to be parallel to the left and right pillars 2A, respectively, and the tip of the first belt 61 is connected to one end of the gate 3, and the tip of the second belt 62 is connected to the other end of the gate 3.

[0019] The first belt 61 and the second belt 62 are wound around guide pulleys 42 and 43 rotatably supported on the beam 2B, and each base end is fixed to a rotating drum 41. The rotating drum 41 is disposed between the guide pulleys 42 and 43.

[0020] Fig. 2 is a structural explanatory diagram of the gate lifting device of the first embodiment, Fig. 2(a) is a cross-sectional view of the rotating drum 41 and the guide pulleys 42 and 43 at the center position in the width direction, and Fig. 2(b) is a central cross-sectional view of the rotating drum 41 and the guide pulleys 42 and 43. Fig. 3 is a structural explanatory diagram of the take-up pulley.

[0021] As shown in Fig. 2(a), the rotating drum 41 is composed of a disk-shaped single-row pulley having a predetermined thickness. As shown in Fig. 3, the rotating drum 41 is directly fixed to the rotating shaft 51 of the motor 5, and rotates integrally with the rotating shaft 51 of the motor 5. As shown in Fig. 2(b), the rotating drum 41 is arranged so as to be aligned in a straight line with the guide pulleys 42 and 43.

[0022] The rotating drum 41 has a winding section 41a to which the base ends of the first belt 61 and the second belt 62 are fixed, and which is rotated in the winding direction by the motor 5 to wind up the first belt 61 and the second belt 62 in multiple layers.

[0023] The winding section 41a is configured with a recessed groove having a groove width slightly wider than the belt width of the first belt 61 and the second belt 62. The winding section 41a has a groove depth that allows the first belt 61 and the second belt 62 to be wound up in multiple layers by overlapping each other as shown in Fig. 3. The base ends of the first belt 61 and the second belt 62 are fixed to the bottom surface of the winding section 41a by fixing bolts 44 and 45.

[0024] In the winding portion 41a, the base end of the first belt 61 and the base end of the second belt 62 are fixed at positions spaced apart from each other in the radial direction of the winding portion 41a with the rotation axis C of the rotating drum 41 therebetween. In this embodiment, the base ends are fixed at positions spaced apart from each other by 180 degrees with the rotation axis C of the rotating drum 41 therebetween.

[0025] In this embodiment, as shown in Fig. 6, a slack detection device 7 that detects slack in the first belt 61 is provided. The slack detection device 7 has a rotating plate 72 that supports the guide pulley 42 so that it can move in the radial direction, and a limit switch 71 that detects the rotation of the rotating plate 72. As shown in Fig. 6(b), when the first belt 61 becomes slack, the rotating plate 72 rotates to move the guide pulley 42 in the radial direction. The limit switch 71 detects the radial movement of the guide pulley 42, thereby detecting slack.

[0026] When the gate 3 is raised, the gate lifting device 4 drives the motor 5 to rotate the rotary drum 41 counterclockwise as shown in FIG. 2. The first belt 61 and the second belt 62 are wound up in layers, overlapping each other, at the winding section 41a, as shown in FIG. 3. The first belt 61 and the second belt 62 are wound up on the rotary drum 41, whereby the gate 3 is lifted up and the loading / unloading gate is opened. On the other hand, when the gate 3 is lowered, the motor 5 is driven to rotate the rotary drum 41 clockwise as shown in FIG. 2. The first belt 61 and the second belt 62 are sequentially unwound from the state in which they are wound up in layers, overlapping each other, at the winding section 41a. As a result, the gate 3 is lowered and the loading / unloading gate is closed.

[0027] According to the gate lifting device 4 of this embodiment, belts 61 and 62 are used to lift the gate 3, so there is no abnormal noise or oil splashing that occurs with wires or chains. In addition, there is no need to apply oil during maintenance and inspection, making maintenance easy. Even when multiple layers are wound around the rotating drum 41, there is no jamming or biting, allowing for smooth winding and unwinding operations.

[0028] According to the gate lifting device 4 of this embodiment, the first belt 61 and the second belt 62 are wound in layers so that they overlap each other at the winding section 41a, so that the lifting distance is almost the same as a result of multiple rotations, and there is no misalignment due to the hanging positions on the left and right. In other words, the same winding length is achieved by winding from the left and right in a double winding method. The axial length of the rotating drum 41 can be shortened compared to a parallel winding method in which the first belt 61 and the second belt 62 are wound individually, and the entire device 4 can be made smaller. In addition, the structure of the rotating drum 41 can be simplified, and the production cost can be reduced.

[0029] Furthermore, according to the gate lifting device 4 of this embodiment, in the winding section 41a, the base end of the first belt 61 and the base end of the second belt 62 are each fixed at positions radially spaced apart from each other on the winding section 41a with the rotation axis C of the rotating drum 41 interposed therebetween, so that the bending stress acting on the rotating shaft 51 of the motor 5 can be reduced compared to, for example, a case in which the base end of the first belt 61 and the base end of the second belt 62 are fixed at the same position.

[0030] According to the gate lifting device 4 of this embodiment, in existing facilities, wires and chains can be easily replaced with the belt-like hanging belt 6. Therefore, replacement work can be performed at low cost, and additional work such as electrical work is not required.

[0031] [Second embodiment] Next, a second embodiment of the present invention will be described. Fig. 4 is a structural explanatory diagram of the gate lifting device of the second embodiment, and Fig. 5 is a structural explanatory diagram of the take-up pulley. Note that the same components as those in the first embodiment are given the same reference numerals and detailed explanations thereof will be omitted.

[0032] A characteristic feature of this embodiment is that the rotating drum 46 is configured to wind up each of the two hanging belts 6 in multiple layers. More specifically, the base end of the first belt 61 and the base end of the second belt 62 are fixed at positions spaced apart from each other in the direction of the rotation axis of the rotating drum 46, and when rotated in the winding direction by a motor, the first belt 61 and the second belt 62 are lined up in the direction of the rotation axis and wound up in multiple layers.

[0033] The rotating drum 46 has a disk shape with a predetermined thickness, as shown in Fig. 4(a). The rotating drum 46 is directly fixed to the rotating shaft 51 of the motor 5, as shown in Fig. 5, and rotates together with the rotating shaft 51 of the motor 5.

[0034] 4(b), the rotating drum 46 has a first winding section 46a that winds up the first belt 61 in multiple layers and a second winding section 46b that winds up the second belt 62 in multiple layers by being rotated in the winding direction by the motor 5. The rotating drum 46 is disposed so that the guide pulley 42 and the first winding section 46a are aligned in a straight line, and the guide pulley 43 and the second winding section 46b are aligned in a straight line.

[0035] The first winding section 46a and the second winding section 46b are configured with a recessed groove having a groove width slightly wider than the belt width of the first belt 61 and the second belt 62. The first winding section 46a and the second winding section 46b have a groove depth that allows the first belt 61 and the second belt 62 to be individually stacked and wound in multiple layers, as shown in Fig. 5. The base end of the first belt 61 is fixed to the bottom surface of the first winding section 46a by a fixing bolt 47, and the base end of the second belt 62 is fixed to the bottom surface of the second winding section 46b by a fixing bolt 48.

[0036] 4, the first winding portion 46a and the second winding portion 46b are fixed at positions spaced apart from each other in the radial direction of the winding portion 41a, with the base end of the first belt 61 and the base end of the second belt 62 sandwiching the rotation axis C of the rotating drum 46 therebetween. In this embodiment, the first and second winding portions 46a and 46b are fixed at positions spaced apart from each other by 180 degrees, with the rotation axis C of the rotating drum 46 sandwiched therebetween.

[0037] When the gate lifting device 4 lifts the gate 3, it drives the motor 5 to rotate the rotating drum 46 counterclockwise as shown in Fig. 4. As shown in Fig. 5, the first belt 61 is wound up in multiple layers, overlapping each other, at the first winding section 46a, and the second belt 62 is wound up in multiple layers, overlapping each other, at the second winding section 46b. When the first belt 61 and the second belt 62 are wound up on the first winding section 46a and the second winding section 46b of the rotating drum 46, the gate 3 is lifted and the loading / unloading entrance is opened.

[0038] On the other hand, when the gate 3 is to be lowered, the motor 5 is driven to rotate the rotating drum 46 in a clockwise direction as shown in Fig. 4. The first belt 61 and the second belt 62 are sequentially unwound from the state in which they are overlapped and wound in multiple layers at the first winding section 46a and the second winding section 46b. This causes the gate 3 to be lowered, and the loading / unloading opening is closed.

[0039] According to the gate lifting device 4 of this embodiment, the axial length of the rotating drum 46 is slightly longer than in the first embodiment, but the same effects as those of the first embodiment can be obtained. In addition, during maintenance, the first belt 61 and the second belt 62 can be removed separately, which has the effect of facilitating maintenance work.

[0040] The present invention (1) is a gate lifting device 4 for a mechanical multi-story parking lot 1, characterized in that it comprises a gate supported so as to be freely raised and lowered, a belt-shaped suspension belt connected to the gate, a rotating drum around which the suspension belt is wound, and a motor that rotates the rotating drum in a winding direction and an unwinding direction.

[0041] According to the present invention (1), a belt-shaped suspension belt is used to suspend the gate, which does not generate abnormal noise or splash oil as occurs with wires or chains. In addition, there is no need to apply oil during maintenance and inspection, making maintenance easy.

[0042] In the present invention (2), the hanging belt has a pair of first and second belts that hang both ends of the gate, and the rotating drum has a winding section to which a base end of the first belt and a base end of the second belt are fixed and which winds up the first and second belts in multiple layers by being rotated in the winding direction by the motor. According to the present invention (2), even when the belts are wound in multiple layers around the rotating drum, there is no jamming or biting, and smooth winding and unwinding operations are possible.

[0043] In the present invention (3), the winding section has a configuration in which the base end of the first belt and the base end of the second belt are fixed at the same position in the direction of the rotation axis of the rotating drum, and the first belt and the second belt are wound up in multiple layers by being rotated in the winding direction by the motor.

[0044] According to the present invention (3), the lifting distance is almost the same as a result of multiple rotations, and there is no misalignment due to the left and right hanging positions. The axial length of the rotating drum can be shortened compared to a parallel winding type in which the first and second belts are wound up individually, and the overall size of the device can be reduced. In addition, the structure of the rotating drum can be simplified, and the manufacturing costs can be reduced.

[0045] In the present invention (4), it is preferable that the base end of the first belt and the base end of the second belt are fixed to the take-up section at positions spaced apart from each other in the radial direction of the take-up section with the rotation axis of the rotating drum interposed therebetween. According to the present invention (4), it is possible to reduce bending stress acting on the rotating shaft of the motor.

[0046] In the present invention (5), the winding section has a configuration in which the base end of the first belt and the base end of the second belt are fixed at positions spaced apart from each other in the direction of the rotation axis of the rotating drum, and the winding section is rotated in the winding direction by the motor to wind up the first belt and the second belt in multiple layers, aligned in the direction of the rotation axis. According to the present invention (5), the first belt 61 and the second belt 62 can be removed separately during maintenance, making maintenance work easy. [Explanation of symbols]

[0047] REFERENCE SIGNS LIST 1 mechanical multi-storey car park, 3 gate, 4 gate lifting device, 5 motor, 6 hanging belt, 41, 46 rotating drum, 41a winding section, 46a first winding section, 46b second winding section, 61 first belt, 62 second belt

Claims

1. A gate lifting device for a mechanical multi-storey parking facility, A gate supported so as to be freely raised and lowered; a belt-shaped suspension belt connected to the gate; a rotating drum around which the suspension belt is wound; A motor that rotates the rotating drum in a winding direction and an unwinding direction; A gate lifting device comprising:

2. The suspending belt includes a pair of first and second belts that suspend both ends of the gate, The gate lifting device as described in claim 1, characterized in that the rotating drum has a winding section to which a base end of the first belt and a base end of the second belt are fixed and which is rotated in the winding direction by the motor to wind up the first belt and the second belt in multiple layers.

3. The winding section includes: a base end of the first belt and a base end of the second belt are fixed to the same position in a direction of a rotation axis of the rotating drum, 3. The gate lifting device according to claim 2, wherein the first belt and the second belt are wound up in layers by being rotated in the winding direction by the motor.

4. The gate lifting device described in claim 3, characterized in that the base end of the first belt and the base end of the second belt are fixed to positions radially spaced apart from each other on the winding portion, with the rotation axis of the rotating drum between them.

5. The winding section includes: a base end of the first belt and a base end of the second belt are fixed at positions spaced apart from each other in a direction of a rotation axis of the rotating drum, 3. The gate lifting device according to claim 2, wherein the first belt and the second belt are wound up in layers in a line in the direction of the rotation axis by being rotated in the winding direction by the motor.

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