JPH03137312A - Rake expansion device for automatic dust collector - Google Patents

Abstract

PURPOSE:To provide the device even at narrow site by respectively fixing slide bearings on a rake shaft and rake base end parts on a rake expansion shaft, and setting the distance between a chain guide and a roller guide small at front face of a machine body and large at rear face. CONSTITUTION:A rake shaft 12 is supported with a raking up chain 10 rotationally moving guided with a chain guide 8 through a chain attachment 11. A plurality of slide bearings 13 are fixed on the rake shaft 12 at equal intervals, and rakes 14 are supported on them slidably frontward and rearward. The base end of the rake 14 is fixed on a rake expansion shaft 15, and rollers 17 engaged with roller guides 19 are fitted on right and left both ends of the rake expansion shaft 15. Further, the distance between straight line parts of a chain guide 8 and a roller guide 9 is set small at front face and small at rear face. Hereby, the projecting length of the rake at rear face is shortened, and the opening with required for up/down movement of the rake 14 can be made small, and the device can be provided even at narrow fitting part on the ground.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an improvement in an automatic dust remover that scrapes up and removes foreign matter caught in a screen installed in a waterway or water gate and sediment at the bottom. be.

[Prior Art] A chain-drive scraping rake is installed behind a screen stretched over a waterway or water gate, and the rake scrapes up and removes dirt and other impurities caught on the screen, as well as sediment at the bottom. Automatic dust removers of this type are conventionally known. (Utility Kai 55-31808. Utility Kai 56-
11-0125, JP-A-52-118931)
[Problems to be Solved by the Invention] In these conventionally known automatic dust removers, the rake 14' is fixed to the chain 10' as shown in FIG. It requires protrusions indicated by A and 13 on the front and rear sides, respectively, and an opening corresponding to the passage C must be provided on the ground. Therefore, it cannot be applied to sites where the installation part opening is narrow, and the opening is If the size was too small, there was a problem in that the civil engineering structure would need to be reworked.

The present invention aims to solve the above-mentioned problems and to provide an automatic dust remover that can be applied even to narrow installation sites.

[Means for Solving the Problems] The present invention provides means for solving the above problems, and includes a chain drive type raking rake arranged behind a screen stretched over a waterway or water gate. , an automatic dust remover that uses a rake to scrape up and remove dust and other impurities caught on the screen and sediment at the bottom, in which a plurality of slides are arranged at equal intervals on a rake shaft 12 supported by a scraping chain 10. Fix the bearing 13,
The base end of the rake 4 supported by the slide bearing 13 so as to be slidable back and forth is fixed to the rake telescopic shaft 15, and rollers 17 are attached to both left and right ends of the rake telescopic shaft 15, and the rake chain 10 is rotated. The distance between the chain guide 8 that guides the movement of the roller 17 and the roller guide 9 that guides the rotation of the roller 17 is small (A'+) at the front of the machine and large (β2) at the back. The gist of this paper is a rake expansion and contraction device for a dust remover.

[Example] Embodiments of the present invention are shown in FIGS. 1 to 4.

In the figure, 1 is the bottom of the waterway, 2 is the left and right side walls of the waterway, 3 is the floor of the water section, and 4 is the aircraft base installed on the bottom 1.

Reference numeral 5 denotes a screen for removing impurities, which rises above the water surface from the bottom surface 1 of the water channel, is turned over at the top, and is connected to a back cover 6, which is fixed to the floor surface 3 via the cover 6.

A guide case 7 includes a channel-shaped chain guide 8 and a roller guide 9, and is fixed to the side wall 2.

Reference numeral 10 denotes an endless rake chain that rotates while being guided by the chain guide 8, and supports a rake shaft 12 via chain attachments 1 to 11.9 This rake shaft 12 has a plurality of chains at equal intervals. slide bearing 1
3 is fixed and supports the rake 14 so as to be slidable back and forth. The base end of the rake 14 is fixed to a rake telescoping shaft 15, and roller mounting seats 16 are provided at both left and right ends of the rake telescoping shaft 15.
A roller 17 is attached via the roller 17, and this roller 17 engages with the roller guide 9.

18 is a receiving box for raking contaminants installed on the liW marking floor 3,] 9 is an upper sprocket foil for driving the raking chain 1.0, and 20 is a r for the driven r, which is also installed near the bottom of the waterway. Part sprocket foil.

The raking chain 10 includes both the upper and lower sprocket wheels 1.
．． The rake chain 10 is guided by the chain guide 8 and rotates by driving one of the sprocket wheels on the - side, while the rollers at both ends of the rake telescopic shaft 12 rotate. 10 is adapted to rotate while being guided by a roller guide 9.

Chain guide 8 has upper and lower sprocket wheels 19.2
On the other hand, the roller guide 9 is arranged along the locus of the chain 10 engaged between the wheels 19 and 20, while the roller guide 9 is arranged along the center axis a of the upper and lower sprocket wheels 19 and 20, as shown in FIGS. 1 and 2. The distance between the linear portions of the chain guide 8 and the roller guide 9, which are disposed biased toward the front and parallel to each other, is small at the front and large at the back. (ρ1 × β2 in the figure) [Operation] Since the present invention has the above-described configuration, the rake 14 rises at the protruding position 1a at the front of the fuselage, rakes up the foreign matter caught on the screen 5, and moves it to the position 2a to the receiving box 18, and on the back of the aircraft, it is located at position 3a.
From there, it sequentially descends to the retracted position 4a, and returns to the protruding position after passing through the position 5a while preventing interference with the bottom surface 1]. Return to a.

Further, as shown in FIG. 2, by appropriately changing the setting position of the roller guide 9, the protruding position 1a of the rake 14 can be set to 1a'' to 1a°'.

Therefore, the rake 14 can be maintained at the protruding position 1a necessary for raking up foreign matter on the face of the fuselage, while it can be set at the retracted position 4a on the rear face, and the protrusion length of the rake 14 on the rear face of the fuselage is Since the height is greatly reduced, it is possible to reduce the amount of time required for moving up and down.

"Effects" According to the present invention, a plurality of slide bearings 13 are fixed at equal intervals to the rake shaft 12 supported by the rake chain 0,
The base end of the rake 14 supported by the slide bearing 13 so as to be slidable back and forth is fixed to the rake telescoping shaft J5, and rollers 17 are attached to both left and right ends of the rake telescoping shaft 15 to control the rotation of the raking chain 10. The distance between the chain guide 8 that guides the rotation of the roller 17 and the roller guide 9 that guides the rotation of the roller 17 is made small (β1) at the front of the machine and large (β2) at the back of the machine. Since the protruding length of the rake 14 can be reduced to a large width, the ground leap width necessary for raising and lowering the rake can be reduced, and the installation is possible even when the mounting part on the ground surface is narrow. .

[Brief explanation of the drawing]

Figures 1 and 2 are side views showing the rake operating state, Figure 3 is a perspective view of the main parts, Figure 4 is a cross-sectional view of the guide part, and Figure 5 is a side view showing the rake operation state.
The figure is an explanatory diagram of a conventional example. 1. Waterway bottom 2: Waterway side wall 3, water-upper floor 4: Aircraft base 5 Ni screen 6: Back cover 7, case 8° Chain guide 9: Roller guide 1-0: Raking chain 11: Chain attachment 12 : Rake shaft 13, slide bearing 14: Rake 5 6 -7 9 0 Rake telescopic shaft Roller mounting seat Roller Scraping Foreign matter receiving box Upper sprocket foil Upper sprocket foil

Claims (1)

[Claims] 1) A chain drive type scraping rake is installed behind a screen stretched over a waterway or water gate, and the rake scrapes up and removes dirt and other impurities caught on the screen, as well as sediment at the bottom. In an automatic dust remover, a rake shaft (
A plurality of slide bearings (13) are fixed at equal intervals to 12), and the base end of a rake (14) supported by the slide bearings (13) so as to be slidable back and forth is fixed to the rake telescopic shaft (15). The rake telescopic shaft (15) has rollers (1
7), and set the distance between the chain guide (8) that guides the rotation of the raking chain (10) and the roller guide (9) that guides the rotation of the roller (17) at the front of the machine. Small (l_1) and large (l_1) on the back.
2) A rake expansion and contraction device for a dust remover characterized by the following.