Tunnel arch-shaped entrance cement trowelling device

Abstract

The utility model discloses a cement trowelling device for an arched entrance of a tunnel, which comprises a cross beam supported in the tunnel, a rotating rod of which the lower end is rotatably connected with the middle position of the cross beam, and a scraping plate arranged at the upper end of the rotating rod, and a plurality of steps are arranged on the scraping plate. During working, the two ends of the cross beam are supported on the inner wall of a tunnel, the scraper blade is matched with the end of a tunnel concrete layer, then the rotating rod rotates, the scraper blade scrapes the end of the tunnel concrete layer, the labor intensity is reduced, and the scraping effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tunnel construction technical field, concretely is a kind of tunnel arched entrance cement trowelling device. BACKGROUND

[0002] Tunnel is important means for human to cross mountain and strait obstruction, and is important means for improving urban road traffic efficiency.Tunnel includes hole body, tunnel concrete layer on hole body surface and driving pavement.During tunnel concrete layer construction on hole body surface, it needs to be finished at tunnel entrance.The traditional finishing mode is all through erecting scaffold, and manual finishing on scaffold, which has high labor intensity, low construction efficiency and poor construction effect. SUMMARY

[0003] The utility model discloses a tunnel arched entrance cement trowelling device, can automatic trowelling of arc concrete end, reduce labor intensity, and construction effect is good.

[0004] The utility model discloses a tunnel arched entrance cement trowelling device, can automatic trowelling of arc concrete end, reduce labor intensity, and construction effect is good.

[0005] A kind of tunnel arched entrance cement trowelling device, including the beam supported in tunnel, the rotation connection of lower end and the middle position of the beam, the scraper of the setting on the upper end of the rotating rod, the scraper is equipped with several steps.

[0006] Further, the beam is equipped with support mechanism.

[0007] Further, the support mechanism includes support rod that is arranged in the beam and slides in the beam, the beam is equipped with sliding slot in parallel, two the sliding slot is communicated, support rod slides in sliding slot, the inside of support rod is equipped with rack, gear that is engaged with the rack of two sides between two the sliding slot, the lower end of the rotation axis of the gear extends the beam, the lower end of the rotation axis of the gear is equipped with first handle.

[0008] Further, the middle position of the beam is equipped with fixed shaft, the lower end of the rotating rod is equipped with sleeve that cooperates with the fixed shaft.

[0009] Further, the upper end of the rotating rod and the lower end of the scraper are equipped with connecting plate, and two The connecting plate is connected by bolt.

[0010] Further, the rotating rod is equipped with second handle.

[0011] Further, the rotating rod is equipped with trough for carrying concrete.

[0012] Further, the rotating rod is equipped with cross bar, and the two sides of the trough are equipped with connecting rod, the upper end of the connecting rod is rotationally connected with cross bar, and the lower end of the connecting rod is rotationally connected with the side surface of the trough.

[0013] The utility model discloses the beneficial effect is:

[0014] 1, the utility model discloses a support in the crossbeam of tunnel, the lower end with the rotation connection of crossbeam middle position swing bar, be provided with the scraper on the swing bar upper end, be equipped with a plurality of steps on the scraper. When working, the both ends of crossbeam are supported on the tunnel inner wall, and the scraper cooperates with the end of tunnel concrete layer, and then the swing bar rotates, and the scraper is scraped to the end of tunnel concrete layer, reduces the labor intensity, and the scraping effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will be briefly introduced the drawing needed to be used in the embodiment or prior art description, obviously, for the ordinary skilled person in the art, without the premise of creating the labor, can also obtain other drawings according to these drawings.

[0016] Figure 1 For the structure of the utility model Figure 1 ;

[0017] Figure 2 For the structure of the utility model Figure 2 ;

[0018] Figure 3 For the sectional view of the utility model.

[0019] In the drawing: crossbeam 1, swing bar 2, scraper 3, step 4, support rod 5, sliding slot 6, rack 7, gear 8, first handle 9, fixed shaft 10, sleeve 11, connecting plate 12, second handle 13, trough 14, cross rod 15, connecting rod 16. DETAILED DESCRIPTION

[0020] In order to make the personnel in the technical field better understand the technical scheme in the utility model, the following will be combined with the drawing in the embodiment of the utility model, and the technical scheme in the embodiment of the utility model is clearly and completely described, obviously, the described embodiment only is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skilled person in the art without creating the premise of labor should belong to the scope of the protection of the utility model.

[0021] For example Figure 1As shown, a cement leveling device for an arched tunnel entrance includes a crossbeam 1 supported inside the tunnel, a rotating rod 2 rotatably connected to the middle of the crossbeam 1 at its lower end, and a scraper 3 mounted on the upper end of the rotating rod 2. The scraper 3 has several steps 4. During operation, the two ends of the crossbeam 1 are supported against the inner wall of the tunnel. The scraper 3 engages with the end of the tunnel concrete layer. Then, the rotating rod 2 rotates, and the scraper levels the end of the tunnel concrete layer, reducing labor intensity and achieving good leveling results. The rotating rod 2 can be a telescopic rod structure to adapt to tunnels of different diameters.

[0022] like Figure 1 and Figure 2 As shown, a support mechanism is provided within the crossbeam 1. The support mechanism includes support rods 5 arranged side-by-side within the crossbeam 1 and sliding within it. Slide grooves 6 are arranged side-by-side within the crossbeam 1, and the two slide grooves 6 are connected. The support rods 5 slide within the slide grooves 6. A rack 7 is provided on the inner side of each support rod 5. A gear 8 is provided between the two slide grooves 6, both meshing with the racks 7 on both sides. The lower end of the shaft of the gear 8 extends out of the crossbeam 1, and a first handle 9 is provided at the lower end of the shaft of the gear 8 for easy rotation. Through the meshing of the rack and gear, the two support rods 5 can move synchronously in the same direction or in opposite directions. When the two support rods 5 move synchronously in opposite directions, one outer end of the support rod 5 is supported on the inner wall of the tunnel, thus fixing the crossbeam. The reverse-moving support rods 5 ensure that the shaft of the rotating rod 2 is located at the center of the tunnel. Positioning screws are provided on the crossbeam 1 for positioning the support rods 5.

[0023] like Figure 1 As shown, a fixed shaft 10 is provided in the middle of the crossbeam 1, and a sleeve 11 that cooperates with the fixed shaft 10 is provided at the lower end of the rotating rod 2.

[0024] like Figure 1 As shown, the upper end of the rotating rod 2 and the lower end of the scraper 3 are both provided with connecting plates 12. The two connecting plates 12 are connected by bolts, which facilitates the replacement of scrapers and forms concrete shapes of different shapes.

[0025] like Figure 1 As shown, the rotating rod 2 is provided with a second handle 13 to facilitate rotating the rotating rod 2.

[0026] like Figure 1 As shown, the rotating rod 2 is provided with a material trough 14 for carrying concrete. The rotating rod 2 is provided with a crossbar 15, and there are connecting rods 16 on both sides of the material trough 14. The upper end of the connecting rod 16 is rotatably connected to the crossbar 15, and the lower end of the connecting rod 16 is rotatably connected to the side of the material trough 14. The material trough 14 carries the concrete that falls off when the scraper is used.

[0027] In the description of this utility model, it should be noted that the terms "left", "right", "up", "down", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A cement leveling device for an arched tunnel entrance, characterized in that, It includes a crossbeam (1) supported in the tunnel, a rotating rod (2) whose lower end is rotatably connected to the middle position of the crossbeam (1), and a scraper (3) set on the upper end of the rotating rod (2), the scraper (3) having several steps (4).

2. The tunnel arch entrance cement leveling device as described in claim 1, characterized in that, The crossbeam (1) is equipped with a support mechanism.

3. The tunnel arch entrance cement leveling device as described in claim 2, characterized in that, The support mechanism includes support rods (5) arranged side by side in the crossbeam (1) and sliding in the crossbeam (1). The crossbeam (1) is provided with parallel sliding grooves (6), the two sliding grooves (6) are connected, the support rods (5) slide in the sliding grooves (6), the inner side of the support rods (5) is provided with racks (7), and a gear (8) is provided between the two sliding grooves (6) and meshes with the racks (7) on both sides. The lower end of the shaft of the gear (8) extends out of the crossbeam (1), and the lower end of the shaft of the gear (8) is provided with a first handle (9).

4. The tunnel arch entrance cement leveling device as described in claim 1, characterized in that, The crossbeam (1) has a fixed shaft (10) in the middle position, and the lower end of the rotating rod (2) has a sleeve (11) that cooperates with the fixed shaft (10).

5. The tunnel arch entrance cement leveling device as described in claim 1, characterized in that, The upper end of the rotating rod (2) and the lower end of the scraper (3) are both provided with connecting plates (12), and the two connecting plates (12) are connected by bolts.

6. The tunnel arch entrance cement leveling device as described in claim 1, characterized in that, The rotating rod (2) is provided with a second handle (13).

7. The tunnel arch entrance cement leveling device as described in claim 1, characterized in that, The rotating rod (2) is provided with a material trough (14) for bearing concrete.

8. The tunnel arch entrance cement leveling device as described in claim 7, characterized in that, The rotating rod (2) is provided with a crossbar (15), and the material trough (14) is provided with connecting rods (16) on both sides. The upper end of the connecting rod (16) is rotatably connected to the crossbar (15), and the lower end of the connecting rod (16) is rotatably connected to the side of the material trough (14).

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