KR101627449B1 - Apparatus for cleaning rack gear of rack-pinion type transfer instrument - Google Patents

Abstract

The present invention relates to a rack gear cleaning device of a rack pinion type transportation device, which automatically cleans a rack gear when a transportation trolley vertically moves without need of periodically cleaning the rack gear by manual labor of a worker. More specifically, the rack gear cleaning device of a rack pinion type transportation device, comprises: a rack gear which is installed and fixed in the vertical direction of a structure; a transportation trolley which is equipped with an electric motor that rotates in a normal or reverse direction, and a main driving pinion gear that rotates by receiving rotary force of the electric motor, and vertically moves in the longitudinal direction of the rack gear through rotation of the main driving pinion gear that engages with the rack gear; a cleaning frame installed on the transportation trolley; an auxiliary driving pinion gear which is installed in the cleaning frame to be able to rotate, and engages with the rack gear to rotate in a normal or reverse direction in accordance with vertical movement of the transportation trolley; a cleaning brush which is installed in the cleaning frame to be able to rotate, and rotates by receiving rotary force from the auxiliary driving pinion gear to clean the rack gear; and a power transfer unit which transfers the rotary force of the auxiliary driving pinion gear to the cleaning brush.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a rack gear pinion type rotary transmission apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rack gear cleaning apparatus for a rack-and-pinion type transport mechanism for cleaning foreign matter accumulated in a rack gear among rack-pinion type transport mechanisms for carrying out up-and-down movement of inspection equipment for inspection of large structures such as ships and aircraft.

Generally, when inspecting large structures such as ships or airplanes, it is necessary to operate inspection equipment in the outdoors rather than in a narrow room. In the case of large structures, a transfer mechanism capable of transporting the inspection equipment vertically and horizontally is necessary because it is large and wide in the vertical and horizontal directions.

As widely known, there are a ball screw system, a rope-pulley system, and a rack-and-pinion system as the vertical transfer mechanism. In the case of the ball screw method, a long manufacturing distance takes a large production cost, there is a risk of buckling of the screw depending on the load, and a problem of damage due to vibration when exposed to a strong wind or the like. In the case of the rope-pulley method, there is a problem that it is difficult to precisely control the position due to the deformation and elasticity of the rope according to the change of the load.

1, the rack gear 10 is securely fixed to the structure 1, and the main pinion gear 20 engaged with the rack gear 10 is rotated It is possible to precisely control the position of the conveying truck 40 in accordance with the normal and reverse rotations of the motor 30, and there is an advantage that there is no limitation in the installation height. However, in the case of such a rack gear system, there is a fatal problem. If foreign matter such as dust or sand gets caught in the tooth form of the rack gear 10 when the apparatus is used outdoors, precision of position control becomes poor, .

Therefore, when the inspection equipment using the rack gear transfer mechanism is used outdoors, the rack gear 10 needs to be periodically cleaned. It is very difficult, difficult, and dangerous to periodically clean the manual work of the operator.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a rack-and-pinion-type transfer mechanism capable of automatically cleaning a rack gear when a transfer bogie moves up and down without having to periodically perform manual cleaning of the rack gear, Of the rack gear.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments with reference to the accompanying drawings.

In order to achieve the above object, a rack gear cleaning apparatus of a rack-and-pinion type conveying mechanism according to the present invention includes a rack gear fixed along a longitudinal direction of a structure, an electric motor rotating forward and backward, And a cleaning frame mounted on the transporting carriage, wherein the transporting carriage is movable in a vertical direction along a longitudinal direction of the rack gear through rotation of the main pinion gear engaged with the rack gear, A driven pinion gear rotatably installed in the cleaning frame and engaged with the rack gear to rotate forward and backward in accordance with the vertical movement of the conveyance truck; A cleaning brush that receives the rotational force and rotates while rotating the rack gear; And power transmission means for transmitting the power to the sole.

The power transmitting means includes a main bevel gear which is coaxially coupled with the driven pinion gear and rotates together with the driven bevel gear, a driven bevel gear which rotates with the main bevel gear and rotates together with the driven bevel gear, And a driven parallel shaft gear that is coaxially coupled to the cleaning brush and is engaged with the main parallel shaft gear to receive the rotational force to rotate the cleaning brush.

The power transmitting means includes a driven bevel gear coupled to the driven pinion gear and rotating together with the driven bevel gear, a driven bevel gear rotated by engaging with the driven bevel gear, and a driven bevel gear coupled with the driven bevel gear , A stationary parallel shaft gear mounted with a forward-rotation one-way clutch in which the driven bevel gear rotates only during forward rotation, and a rotating shaft rotatably installed inside the cleaning frame, A synchronous parallel shaft gear which is coupled coaxially with the cleaning brush and is engaged with the reduction parallel shaft gear to receive a rotational force to rotate the cleaning brush; A reverse rotating shaft gear mounted on a coaxial phase and equipped with a reverse rotation one-way clutch in which the driven bevel gear rotates only during reverse rotation, And characterized in that it comprises the sprinting same parallel axis gear and are engaged by receiving a rotational force parallel reverse driven gear shaft for rotating the cleaning brush.

The cleaning brush may clean the bottom surface and the end surface of the rack gear together.

A rack gear cleaning apparatus for a rack-and-pinion type feed mechanism according to the present invention includes a rack gear fixed along a longitudinal direction of a structure, an electric motor rotating in normal and reverse directions, and a main pinion gear And a first cleaning frame provided on an upper portion of the transporting carriage, and a second cleaning frame provided on the first cleaning frame, A first driven pinion gear rotatably installed in the cleaning frame and engaged with the rack gear to rotate forward and backward in accordance with the upward and downward movement of the conveyance truck; A first cleaning brush which receives rotational force from the first driven pinion gear and rotates while cleaning the rack gear; A second cleaning frame provided at a lower portion of the transporting carriage, a second cleaning frame provided rotatably inside the second cleaning frame, and is engaged with the rack gear, A second driven pinion gear rotatable in the forward and reverse directions of the second driven pinion gear, a second driven pinion gear rotatably mounted in the second driven pinion, And a second power transmitting means for transmitting the rotational force of the second driven pinion gear to the second cleaning brush.

Each of the first power transmitting means and the second power transmitting means includes a main bevel gear that is coaxially coupled with the driven pinion gear and rotates together, a driven bevel gear that meshes with the main bevel gear and rotates, A driven parallel shaft gear which is coupled with the driven bevel gear and rotates together with the driven bevel gear; a driven parallel shaft gear which is coaxially coupled to the cleaning brush and is engaged with the driven parallel shaft gear, And a control unit.

Each of the first power transmitting means and the second power transmitting means includes a main bevel gear that is coaxially coupled with the driven pinion gear and rotates together, a driven bevel gear that meshes with the main bevel gear and rotates, A stationary parallel shaft gear mounted coaxially with the driven bevel gear and equipped with a forward rotation one-way clutch in which the driven bevel gear rotates only during forward rotation; Parallel reduction gears that are coupled to the cleaning brush in such a manner that they are coupled with the reduction gear shaft gears and receive a rotational force to rotate the cleaning brush, A reverse rotating parallel shaft gear mounted on a coaxial shaft with the driven bevel gear and equipped with a reverse rotation one-way clutch in which the driven bevel gear rotates only during reverse rotation, Group is bonded to a cleaning brush and coaxial, the axis is parallel to the same sprinting gear and the coupling receives the rotational force, it characterized in that it comprises a reverse shaft parallel to the driven gear for rotating the cleaning brush.

The first cleaning brush may clean any one of the bottom surface or the end surface of the rack gear, and the second cleaning brush may clean the other surface of the rack gear selected by the first cleaning brush And cleaning.

The rack gear cleaning apparatus of the rack-and-pinion type feed mechanism according to the present invention is configured such that the worker is mechanically connected from the driven pinion gear through the power transmitting means at the time of up and down movement of the conveyance truck without needing to periodically perform cleaning of the rack gear due to manual operation It is convenient that the cleaning gear is automatically cleaned while the cleaning brush is rotated, thereby ensuring precise position control of the transportation bogie, thereby preventing the risk of malfunction or breakage.

In addition, although the cleaning brush may be rotated in both right and left directions to clean the rack gear in accordance with the up-and-down movement of the conveying truck, the stationary parallel shaft gear, the decelerating parallel shaft gear and the reverse- It is possible to clean the rack gear by rotating the cleaning brush in only one direction, regardless of the up and down movement of the transport bogie through the mounted anti-parallel shaft gears, so that the dirtiness of the cleaning brush can be improved and the foreign matter removed from the cleaning brush can be easily discharged Lt; / RTI >

Further, the first cleaning frame and the second cleaning frame are provided on the upper and lower sides of the conveyance truck, respectively, so that the rack gears can be cleaned more cleanly in any direction when the conveyance truck is moved up and down, The first cleaning brush of the first cleaning brush and the second cleaning brush of the second cleaning brush separately clean the end surface or the bottom surface of the rack gear, thereby contributing to improvement of durability through cleaning cleaning of each cleaning brush.

1 is a perspective view showing a general rack-and-pinion type feed mechanism,
FIG. 2 is a perspective view showing an embodiment of a rack gear cleaning apparatus for a rack-and-pinion type feed mechanism according to the present invention,
FIG. 3 is a front view showing the interior of the cleaning frame in the embodiment of FIG. 2,
4 and 5 are front views showing the operation of the cleaning brush when the cleaning frame moves upward in the embodiment of FIG. 3,
6 and 7 are front views showing the operation of the cleaning brush when the cleaning frame moves downward in the embodiment of FIG. 3,
FIG. 8 is a front view showing another embodiment of the inside of the cleaning frame in the embodiment of FIG. 2,
FIGS. 9 and 10 are front views showing the operation of the cleaning brush when the cleaning frame moves upward in the embodiment of FIG. 8,
Figs. 11 and 12 are front views showing the operation of the cleaning brush when the cleaning frame moves downward in the embodiment of Fig. 8,
13 is a front elevational view showing another embodiment of the cleaning brush of the rack gear cleaning apparatus of the rack-pinion type feed mechanism according to the present invention,
14 is a perspective view showing another embodiment of the rack gear cleaning apparatus of the rack-pinion type feed mechanism according to the present invention,
Fig. 15 is a front view showing the inside of each cleaning frame in the embodiment of Fig. 14,
Fig. 16 is a front view showing another embodiment of the inside of each cleaning frame in the embodiment of Fig. 14; Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of a rack gear cleaning apparatus for a rack-and-pinion type feed mechanism according to the present invention will be described in detail with reference to the accompanying drawings.

2 to 13, the rack gear cleaning apparatus of the rack-and-pinion type feed mechanism according to the embodiment of the present invention includes the rack gear 10, the main-drive pinion gear 20, the electric motor 30, And includes a cleaning frame 100, a driven pinion gear 200, a cleaning brush 300, and a power transmission unit 400. The cleaning frame 100 is a rack-and- The power transmitting means 400 includes a main bevel gear 410, a driven bevel gear 420, a main parallel shaft gear 430 and a driven parallel shaft gear 440, or a main bevel gear 410, And a counter driven parallel shaft gear 480 and a counter driven parallel shaft gear 480. The bevel gear 420, the stationary parallel shaft gear 450, the reduction parallel shaft gear 460, the regular parallel parallel shaft gear 470, .

The rack gear 10 is fixedly installed along the longitudinal direction of the structure 1 as shown in Fig. The rack gear 10 is rotated by engaging with the main pinion gear 20 provided on the transporting carriage 40 to be described later so that the transporting carriage 40 is transported up and down along the longitudinal direction of the rack gear 10.

The transfer bogie 40 is provided with an electric motor 30 rotating in normal and reverse directions and a main pinion gear 20 rotated by receiving the rotational force of the electric motor 30. The main pinion gear 30 meshing with the rack gear 10, The gear 20 moves up and down along the longitudinal direction of the rack gear 10 through rotation. (Not shown) for inspecting a large structure such as a ship or an aircraft, transported goods for up-and-down transport, etc. are mounted on the transport truck 40. When the transporting carriage 40 moves up and down along the rack gear 10, the foreign matter accumulated in the rack gear 10 is automatically cleaned by the rack gear cleaning apparatus according to the present invention.

The cleaning frame 100 is a housing of the rack gear cleaning apparatus according to the present invention, and is installed in the conveyance truck 40 as shown in Fig. A cleaning brush 300 and a power transmission means 400 are attached to the cleaning frame 100 to rotate the cleaning brush 300 to clean the rack gear 10. [

3 to 7, the driven pinion gear 200 is rotatably installed in the cleaning frame 100 and is engaged with the rack gear 10 to move the conveyance truck 40 up and down And then rotate in reverse. The driven pinion gear 20 is mechanically coupled to the driven pinion gear 200 in accordance with the upward / downward movement of the driven pinion gear, and is automatically rotated forward or reverse, unlike the driven pinion gear 20 is rotated by receiving the rotational force by the electric motor 30. That is, it is not necessary to provide a separate power source to the rack gear cleaning device, and the driven pinion gear 200 mechanically coupled with the up-and-down movement of the conveyance truck 40 rotates to rotate the cleaning brush 300 .

3 to 13, the cleaning brush 300 is rotatably installed in the cleaning frame 100 and receives rotation force from the driven pinion gear 200 to rotate the rack gear 10, . That is, the driven pinion gear 200 mechanically engaged with the rack gear 10 rotates in accordance with the upward and downward movement of the conveying truck 40, and the cleaning brush 300 rotates through the power transmitting means 400, So that the rack gear 10 is cleaned. 13, the cleaning brush 300 may clean the bottom surface 11 and the end surface 12 of the rack gear 10, or may be configured to clean only one of the bottom surface 11 and the end surface 12 intensively You may.

As shown in FIG. 3, the power transmission means 400 includes a power transmission means 400 for transmitting the rotational force from the driven pinion gear 200 to the cleaning brush 300, Gear 410, a driven bevel gear 420, a driven parallel shaft gear 430, and a driven parallel shaft gear 440.

The driven bevel gear 410 rotates together with the driven pinion gear 200. The driven bevel gear 420 meshes with the driven bevel gear 410 and rotates. Is coupled coaxially with the driven bevel gear 420 and rotates together with the driven parallel gear 440. The driven parallel shaft gear 440 is coaxially coupled to the cleaning brush 300, And receives the rotational force to rotate the cleaning brush 300. That is, the driven pinion gear 200 rotates in the forward and reverse directions in accordance with the upward and downward movement of the conveyance truck 40, and the main bevel gear 420 rotates together with the driven pinion gear 200 to rotate the driven bevel gear 420 And the main parallel shaft gear 430 rotates together with the driven bevel gear 420 to rotate the driven parallel shaft gear 430 while the cleaning brush 300 rotates.

4 and 5, a process of transmitting the rotational force from the driven pinion gear 200 to the cleaning brush 300 through the power transmitting means 400 will be described. When the conveying truck 40 is moved upward, the driven pinion gear 200 is rotated forward, and at the same time, the main bevel gear 410 rotates together. The driven bevel gear 420 engaged with the main bevel gear 410 rotates reversely and the main parallel parallel shaft gear 430 rotates together. When the cleaning brush 300 rotates and the rack gear 10 is cleaned while the driven parallel shaft gear 440 meshed with the main parallel shaft gear 430 is rotated in the forward direction, Dirt and foreign matter are washed away.

6 and 7, a process of transmitting rotational force from the driven pinion gear 200 to the cleaning brush 300 through the power transmitting means 400 will be described. When the transport bogie 40 moves downward, the driven pinion gear 200 rotates reversely and the main bevel gear 410 rotates together. The driven bevel gear 420 engaged with the main bevel gear 410 is rotated forward and at the same time the driven parallel shaft gear 430 rotates together. When the cleaning brush 300 rotates reversely to clean the rack gear 10 while the driven parallel shaft gear 440 meshed with the main parallel shaft gear 430 rotates in the reverse direction, The dust or foreign matter is shaved in the direction of the arrow.

In this way, the driven pinion gear 200 is reversely or positively rotated in accordance with the upward or downward movement of the conveyance truck 40 and the rotational force is transmitted to the cleaning brush 300 through the power transmitting means 400, So that the dust or dirt accumulated on the rack gear 10 is cleaned. However, if the cleaning brush 300 repeats forward rotation or reverse rotation, the cleaning brush 300 is biased in both left and right directions, and the amount of impact increases, so that the durability may be remarkably deteriorated. Therefore, in order to improve the durability of the cleaning brush 300, it is more preferable to configure the cleaning brush 300 so that the cleaning brush 300 can be rotated only in one direction of the left and right. To this end, another embodiment of the power transmission means 400 8 to 12.

8, the power transmission means 400 includes the main drive bevel gear 410, the driven bevel gear 420, the stationary parallel shaft gear 450, the reduction parallel shaft gear 460, A parallel parallel shaft gear 470, an unbalanced parallel shaft gear 480 and a reverse driven parallel shaft gear 490. The main bevel gear 410 rotates together with the driven pinion gear 200 and rotates together with the driven bevel gear 410. At this time, the driven bevel gear 420 is coaxially coupled with the stationary parallel shaft gear 450 and the unscrewing parallel shaft gear 480, and rotates together. The cleaning brush 300 is coaxial with the regular parallel parallel shaft gear 450, The gear 470 and the reverse driven parallel shaft gear 490 are engaged and rotated together.

More specifically, the stationary parallel-shaft gear 450 is coupled to the driven bevel gear 420 in a coaxial manner, and the forward-rotation one-way clutch 450a in which the driven bevel gear 420 rotates only during forward rotation is mounted do. One-way clutch is a rotation transmission means capable of only one-way rotation, and the forward rotation-one-way clutch 450a is configured such that the rotation axis of the driven bevel gear 420 is rotated together with the stationary parallel- And when the rotary shaft of the driven bevel gear 420 is rotated in the reverse direction, the rotary bevel gear 420 rotates separately from the stationary parallel shaft gear 450 and does not transmit rotational force and idles. The rotational force of the stationary parallel shaft gear 450 is transmitted to the regular parallel transmission shaft gear 470 to rotate the regular parallel transmission shaft gear 470. The regular-parallel parallel shaft gear 470 is coupled coaxially with the cleaning brush 300 to rotate the cleaning brush 300.

The reverse rotation parallel shaft gear 480 is coupled to the driven bevel gear 420 in a coaxial manner and the reverse rotation one-way clutch 480a in which the driven bevel gear 420 rotates only during reverse rotation is mounted do. The reverse rotation one-way clutch 480a rotates together with the uneven rotation shaft gear 480 only when the rotary shaft of the driven bevel gear 420 rotates reversely and the rotary shaft of the driven bevel gear 420 rotates counterclockwise Rotating shaft 480 is rotated independently of the parallel shaft gear 480 without transmitting the rotational force. The rotational force of the counter-rotating parallel shaft gear 480 is transmitted to the reverse driven parallel shaft gear 490 to rotate the counter driven parallel shaft gear 490. The reverse rotation parallel shaft gear 490 is coupled coaxially with the cleaning brush 300 and rotates the cleaning brush 300 by engaging with the uneven rotation shaft gear 480 and receiving a rotational force.

Here, the cleaning brush 300 rotates in both the forward and reverse directions according to the upward / downward movement of the conveying carriage 40, so that only the configuration of the power transmitting means 400 is complicated. Accordingly, in order for the cleaning brush 300 to rotate in only one direction, the rotation of the cleaning brush 300 may be performed between the stationary parallel-axis gear 450 and the regular-parallel parallel shaft gear 470, A separate transmission gear must be provided between the shaft gears 490. 8 to 12, the rotation speed of the cleaning brush 300 is reduced and decelerated between the stationary parallel shaft gear 450 and the regular-parallel parallel shaft gear 470, And a parallel shaft gear 460 is provided.

The reduction parallel shaft gear 460 is rotatably installed in the cleaning frame 100. The reduction parallel shaft gear 460 meshes with the stationary parallel shaft gear 450 and rotates by receiving a rotational force, So as to transmit the rotational force of the stationary parallel shaft gear 450. Accordingly, when the rotational force is transmitted from the stationary parallel shaft gear 450 to the regularly-parallel parallel shaft gear 470 via the reduction parallel shaft gear 460, the rotational direction is further changed and transmitted, so that the reverse parallel shaft gear 480 The rotation direction of the rotary brush 300 is the same as the rotation direction of the rotary force transmitted from the rotary brush 300 to the reverse driven parallel shaft gear 490.

9 and 10, a process of transmitting rotational force from the driven pinion gear 200 to the cleaning brush 300 through the power transmitting means 400 will be described. When the conveying truck 40 is moved upward, the driven pinion gear 200 is rotated forward, and at the same time, the main bevel gear 410 rotates together. The driven bevel gear 420 engaged with the main bevel gear 410 is reversely rotated and at the same time the reverse rotation one-way clutch gear 480a is operated to cause the reverse synchronizing gear 480 to reverse rotate together, The parallel shaft gear 450 does not receive the rotational force from the driven bevel gear 420. When the cleaning brush 300 is rotated in the forward direction to clean the rack gear 10 while the reverse driven parallel shaft gear 490 engaged with the reverse rotating parallel shaft gear 480 is rotated forward, Dust, foreign matter, and the like are shaken away from the main body 10 in the left direction.

Conversely, a process of transmitting rotational force from the driven pinion gear 200 to the cleaning brush 300 through the power transmitting means 400 when the conveying truck 40 is moved downward will be described with reference to FIGS. When the transport bogie 40 moves downward, the driven pinion gear 200 rotates reversely and the main bevel gear 410 rotates together. The driven bevel gear 420 engaged with the main bevel gear 410 is rotated forward and at the same time the forward rotation one-way clutch gear 450a is operated so that the fixed parallel gears 450 rotate together, The gear 480 does not receive rotational force from the driven bevel gear 420. The decelerated parallel shaft gear 460 engaged with the stationary parallel shaft gear 450 is rotated in the reverse direction, and the regularly parallel parallel shaft gear 470 engaged with the decelerated parallel shaft gear 460 is rotated forward. Therefore, when the cleaning brush 300 rotates and rotates the rack gear 10, the dust and foreign matter are similarly removed from the rack gear 10 in the left direction as shown in FIG.

9 to 12, the cleaning brush 300 is constantly rotated at any time, regardless of whether the transporting carriage 40 moves upward or downward, so that dust, foreign matter, or the like in the left direction from the rack gear 10 This is the way to go.

As described above, the rack gear cleaning apparatus of the rack-and-pinion type transporting apparatus according to the present invention is configured such that when the transporting truck 40 is moved up and down without requiring the operator to periodically perform manual cleaning of the rack gear 10, The cleaning brush 300 connected mechanically through the power transmission means 400 from the main body 200 is automatically rotated to clean the rack gear 10 and thus the precision positioning control of the delivery truck 40 And the risk of failure or breakage can be prevented at the source.

The cleaning brush 300 can be rotated in both left and right directions to clean the rack gear 10 in accordance with the upward and downward movement of the conveyance truck 40. However, Regardless of whether the transfer bogie 40 is moved up and down through the rotation parallel shaft gear 480 equipped with the rotary shaft 450, the reduction parallel shaft gear 460 and the reverse rotation one-way clutch 480a, The rack gear 10 can be cleaned while rotating only in one direction of the left and right, thereby improving the durability of the cleaning brush 300 and facilitating the discharge of foreign matter removed from the cleaning brush 300.

Meanwhile, as shown in FIGS. 14 to 16, the rack gear cleaning apparatus of the rack-and-pinion type feed mechanism according to another embodiment of the present invention includes the rack gear 10, the main-drive pinion gear 20, the electric motor 30, The first cleaning frame 101, the first driven pinion gear 201, the first cleaning brush 301, the first power transmission means 401 and the second cleaning blade 403 are provided in a rack- A second cleaning pinion gear 202, a second cleaning brush 302, and a second power transmission means 402. The second cleaning frame 102 includes a second cleaning pinion gear 202, a second cleaning brush 302, The first and second power transmitting means 400 includes a main bevel gear 410, a driven bevel gear 420, a main parallel shaft gear 430 and a driven parallel shaft gear 440, And a reverse driven parallel shaft gear 480 and a reverse driven parallel shaft shaft 460. The driven parallel shaft gear 480 is connected to the driven parallel shaft shaft 460. The driven parallel shaft shaft 460 is connected to the driven parallel shaft shaft 440. The driven parallel shaft shaft 460 is connected to the driven bevel gear 420, Gear 490. < / RTI >

The first cleaning frame 101 is installed at an upper portion of the conveyance truck 40 and the second cleaning frame 102 is installed at a lower portion of the conveyance truck 40. A first driven pinion gear 201, a first cleaning brush 301 and a first power transmitting means 401 are installed in the first cleaning frame 101. Inside the second cleaning frame 102, A second driven pinion gear 202, a second cleaning brush 302, and a second power transmission means 402, respectively. Each component is the same in structure, function, and coupling relationship as the above-described driven pinion gear 200, cleaning brush 300, and power transmission means 400, and thus detailed description thereof will be omitted. However, since the installation positions of the first cleaning frame 101 and the second cleaning frame 102 are limited and they are installed on the upper and lower sides of the conveyance truck 40, when the conveyance truck 40 moves up and down, The first cleaning brush 301 of the first cleaning frame 101 and the second cleaning brush 302 of the second cleaning frame 102 can be cleaned more easily than the rack gear 10, The end surface 12 of the cleaning brush 12 or the bottom surface 11 is divided and cleaned, thereby contributing to improvement in durability through cleaning cleaning of each cleaning brush.

The embodiments of the present invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art will be able to modify the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the scope of the present invention as long as they are obvious to those skilled in the art.

1: Structure
10: Racks
11: bottom surface 12: end surface
20: Main pinion gear
30: Electric motor
40: Feed truck
100: Cleaning frame
101: first cleaning frame 102: second cleaning frame
200: driven pinion gear
201: first driven pinion gear 202: second driven pinion gear
300: Cleaning brush
301: First cleaning brush 302: Second cleaning brush
400: Power transmission means
401: first power transmitting means 402: second power transmitting means
410: main bevel gear
420: Follower bevel gear
430: main parallel shaft gear
440: driven parallel shaft gear
450: In-line parallel shaft gear 450a: Forward-one-way clutch
460: Reduction parallel shaft gear
470: Full parallel shaft gear
480: Reverse rotating shaft parallel gears 480a: Reverse rotating one-way clutches
490: Reverse driven parallel shaft gear

Claims (8)

A rack gear fixedly installed along the longitudinal direction of the structure,
And a main pinion gear which is rotated by receiving the rotational force of the electric motor, and which is moved up and down along the longitudinal direction of the rack gear through rotation of the main pinion gear engaged with the rack gear, The bogie,
A cleaning frame provided on the conveyance truck,
A driven pinion gear rotatably installed in the cleaning frame and engaged with the rack gear to be rotated in the normal and reverse directions in accordance with the upward and downward movement of the conveyance truck;
A cleaning brush rotatably installed in the cleaning frame and rotating the rack gear while receiving a rotational force from the driven pinion gear;
And a power transmitting means for transmitting the rotational force of the driven pinion gear to the cleaning brush.
The method according to claim 1,
The power transmitting means includes:
A main bevel gear coupled to the driven pinion gear coaxially and rotating together,
A driven bevel gear rotatably engaged with the main bevel gear,
A driven parallel shaft gear coupled to the driven bevel gear and coaxially rotated,
And a driven parallel shaft gear coupled to the cleaning brush in such a manner that the cleaning brush is coaxially coupled to the cleaning brush and engaged with the main parallel axis gear to receive a rotational force to rotate the cleaning brush.
The method according to claim 1,
The power transmitting means includes:
A main bevel gear coupled to the driven pinion gear coaxially and rotating together,
A driven bevel gear rotatably engaged with the main bevel gear,
A stationary parallel shaft gear mounted coaxially with the driven bevel gear and equipped with a forward rotation one-way clutch in which the driven bevel gear rotates only during forward rotation;
A reduction gear shaft rotatably installed in the cleaning frame and engaged with the stationary parallel shaft gear,
A normal parallel shaft gear coupled coaxially with the cleaning brush and coupled to the reduction parallel shaft gear to receive a rotational force to rotate the cleaning brush;
A reverse driven parallel shaft gear mounted coaxially with the driven bevel gear and equipped with a reverse rotation one-way clutch in which the driven bevel gear rotates only during reverse rotation,
And a reverse driven parallel shaft gear coupled to the cleaning brush in such a manner that the cleaning brush is rotated cooperatively with the cleaning brush so as to engage with the unevenly parallel shaft gear and receive a rotational force to rotate the cleaning brush. Device.
4. The method according to any one of claims 1 to 3,
The cleaning brush
And the bottom surface and the end surface of the rack gear are cleaned together.
A rack gear fixedly installed along the longitudinal direction of the structure,
And a main pinion gear which is rotated by receiving the rotational force of the electric motor, and which is moved up and down along the longitudinal direction of the rack gear through rotation of the main pinion gear engaged with the rack gear, The bogie,
A first cleaning frame installed on an upper portion of the conveyance truck,
A first driven pinion gear rotatably installed in the first cleaning frame and engaged with the rack gear to rotate forward and backward in accordance with vertical movement of the conveyance truck;
A first cleaning brush rotatably installed in the first cleaning frame and rotating the rack gear while receiving a rotational force from the first driven pinion gear;
First power transmission means for transmitting the rotational force of said first driven pinion gear to said first cleaning brush,
A second cleaning frame installed at a lower portion of the conveyance truck,
A second driven pinion gear rotatably installed in the second cleaning frame and engaged with the rack gear to rotate forward and backward in accordance with the vertical movement of the conveyance truck;
A second cleaning brush which is rotatably installed in the second cleaning frame and receives rotation force from the second driven pinion gear and rotates while rotating the rack gear;
And second power transmission means for transmitting the rotational force of said second driven pinion gear to said second cleaning brush.
6. The method of claim 5,
Wherein each of the first power transmitting means and the second power transmitting means includes:
A main bevel gear coupled to the driven pinion gear coaxially and rotating together,
A driven bevel gear rotatably engaged with the main bevel gear,
A driven parallel shaft gear coupled to the driven bevel gear and coaxially rotated,
And a driven parallel shaft gear coupled to the cleaning brush in such a manner that the cleaning brush is coaxially coupled to the cleaning brush and engaged with the main parallel axis gear to receive a rotational force to rotate the cleaning brush.
6. The method of claim 5,
Wherein each of the first power transmitting means and the second power transmitting means includes:
A main bevel gear coupled to the driven pinion gear coaxially and rotating together,
A driven bevel gear rotatably engaged with the main bevel gear,
A stationary parallel shaft gear mounted coaxially with the driven bevel gear and equipped with a forward rotation one-way clutch in which the driven bevel gear rotates only during forward rotation;
A reduction gear shaft rotatably installed in the cleaning frame and engaged with the stationary parallel shaft gear,
A normal parallel shaft gear coupled coaxially with the cleaning brush and coupled to the reduction parallel shaft gear to receive a rotational force to rotate the cleaning brush;
A reverse driven parallel shaft gear mounted coaxially with the driven bevel gear and equipped with a reverse rotation one-way clutch in which the driven bevel gear rotates only during reverse rotation,
And a reverse driven parallel shaft gear coupled to the cleaning brush in such a manner that the cleaning brush is rotated cooperatively with the cleaning brush so as to engage with the unevenly parallel shaft gear and receive a rotational force to rotate the cleaning brush. Device.
8. The method according to any one of claims 5 to 7,
Wherein the first cleaning brush comprises:
Wherein one of the bottom surface and the end surface of the rack gear is cleaned,
The second cleaning brush
Wherein the first cleaning brush cleans the other surface of the rack gear selected by the first cleaning brush.

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