Large-span concrete surface fiber spreading machine

Abstract

The utility model discloses a large-span concrete surface fiber spreading machine which comprises a machine frame, a machine frame advancing device, a hopper walking mechanism and a fiber hopper. The rack comprises two main cross rods and a plurality of vertical supporting rods which are connected between the two main cross rods at intervals; the machine frame advancing device comprises two pairs of machine frame advancing wheels installed at the two ends of the machine frame. The hopper walking mechanism comprises a hopper walking frame, a hopper power box installed in the middle of the back face of the hopper walking frame, two pairs of hopper walking rollers which are installed on the back face of the hopper walking frame and roll on two main transverse rods of the machine frame in a one-to-one correspondence mode, and a hopper walking driving mechanism installed in the hopper power box. The fiber hopper is installed on the front face of the hopper walking frame and comprises a material head body and two material scattering rollers, wherein the two material scattering rollers are connected between a front wall plate and a rear wall plate of the material head body in a crossing mode at intervals and located on the same horizontal plane. According to the concrete fiber spreading device, concrete fibers can be uniformly spread on the premise of not stepping into a construction area to damage the surface of concrete.

Description

Technical Field

[0001] The utility model relates to a large-span concrete surface fiber spreader. Background Art

[0002] When fibers are added to concrete, they disperse quickly and evenly throughout the concrete, forming a random support system. This disperses directional stresses within the concrete, preventing the occurrence and growth of primary cracks, and eliminating or reducing the number and size of primary microcracks. This significantly enhances the concrete's crack resistance and impermeability, improving its toughness and thus extending its service life. Furthermore, due to the inherent strength of the fibers, their uniform dispersion within the concrete creates an anchoring effect that can instantly absorb a certain amount of destructive energy. Port and wharf floors often withstand various loads, necessitating high-strength concrete. Adding fibers to the concrete floor can improve its crack resistance and wear resistance.

[0003] During the construction of new port terminal pavements, concrete is poured first, and then fibers are spread on the surface before the concrete solidifies. Existing spreaders are mostly used for applying snow removal agents on roads. These are vehicle-mounted devices that require a large amount of road space, are heavy, and require high road conditions. They also spread large amounts of materials and are not precise. Due to the large spans of ports and terminals, road conditions are worse than on roads, making traditional spreaders unsuitable. Furthermore, due to the elongated shape of the fibers, conventional spreaders are unable to break them up, resulting in clumps of fibers. Manual spreading, on the other hand, can result in uneven distribution. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects of the prior art and provide a large-span concrete surface fiber spreader, which can spread concrete fibers evenly without stepping into the construction area to damage the concrete surface.

[0005] The purpose of the utility model is achieved as follows: a large-span concrete surface fiber spreader, including a frame, a frame travel device, a hopper travel mechanism and a fiber hopper; wherein,

[0006] The frame includes two parallel main cross bars, one above the other, and a plurality of vertical support bars spaced apart and connected between the two main cross bars.

[0007] The frame travel device includes two pairs of frame travel wheels, each of which is mounted on both ends of the frame in a one-to-one correspondence through a travel bracket;

[0008] The hopper travel mechanism includes a hopper travel frame, a hopper power box installed in the middle of the back of the hopper travel frame, two pairs of hopper travel rollers installed on the back of the hopper travel frame and rolling on the two main cross bars of the frame in a one-to-one correspondence, and a hopper travel drive mechanism installed in the hopper power box;

[0009] The fiber hopper is installed on the front side of the hopper walking frame. The fiber hopper includes a material head body and two spreading rollers that are spaced apart and span the front and rear wall panels of the material head body and are located on the same horizontal plane. Mixing rods are provided on the outer surfaces of the two spreading rollers, and the mixing rods on the two spreading rollers are staggered in the length direction; the rear ends of the two spreading rollers are connected to the spreading roller drive mechanism installed in the hopper power box.

[0010] The above-mentioned large-span concrete surface fiber spreader, wherein the frame further includes a plurality of diagonal support rods connected between two main cross bars and located between every two adjacent vertical support rods.

[0011] The above-mentioned large-span concrete surface fiber spreader, wherein the traveling support includes a column connected to one end of the frame and having a length greater than the vertical support rod, an axle mounting beam longitudinally connected to the lower end of the column, and two inclined columns connected one-to-one between the two ends of the axle mounting beam and the top of the column; each pair of frame traveling wheels is mounted one-to-one at both ends of the axle mounting beam.

[0012] In the above-mentioned large-span concrete surface fiber spreader, the frame travel device further includes two sets of power mechanisms connected to the two pairs of frame travel wheels in a one-to-one correspondence.

[0013] In the above-mentioned large-span concrete surface fiber spreader, the hopper travel drive mechanism includes a hopper travel drive motor and a synchronous gear transmission mechanism or a synchronous belt transmission mechanism connected between the hopper travel drive motor and a hopper travel roller.

[0014] The above-mentioned large-span concrete surface fiber spreader, wherein the spreading roller drive mechanism includes a spreading roller drive motor installed at the rear end of one spreading roller and a gear transmission mechanism connected between the rotating shaft of the spreading roller drive motor and the rear end of the other spreading roller, so that the two spreading rollers rotate synchronously in opposite directions.

[0015] In the above-mentioned large-span concrete surface fiber spreader, the hopper power box is also provided with a hopper power supply.

[0016] The utility model is characterized in that a fiber hopper is installed on a large-span frame through a hopper walking mechanism, and a frame travel device is installed at both ends of the frame, so that the fiber hopper can be moved laterally without stepping into the construction area to damage the concrete surface. The fiber hopper is moved laterally by the hopper walking mechanism, and the fiber is evenly spread on the concrete surface by the spreading roller during the movement of the fiber hopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the large-span concrete surface fiber spreader of the utility model;

[0018] Figure 2 It is a front view of the large-span concrete surface fiber spreader of the present invention;

[0019] Figure 3 This is a top view of the large-span concrete surface fiber spreader of the utility model;

[0020] Figure 4 It is a side view of the large-span concrete surface fiber spreader of the utility model. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] See also Figures 1 to 4 The large-span concrete surface fiber spreader of the present invention comprises a frame 1, a frame travel device 2, a hopper travel mechanism 3 and a fiber hopper 4.

[0023] The frame 1 includes two parallel main crossbars 10, a plurality of vertical support rods 11 spaced apart and connected between the two main crossbars 10, and a plurality of diagonal support rods 12 connected between the two main crossbars 10 and located between every two adjacent vertical support rods 11. The main crossbars 10 are made of section steel.

[0024] The frame travel device 2 includes two pairs of frame travel wheels 20, each mounted on either end of the frame 1 via a travel bracket. The travel bracket includes a column 21 connected to one end of the frame 1 and longer than the vertical support rod 11, a wheel axle mounting beam 22 longitudinally connected to the lower end of the column 21, and two inclined columns 23 connected one-to-one between the ends of the wheel axle mounting beam 22 and the top of the column 21. Each pair of frame travel wheels 20 is mounted on either end of the wheel axle mounting beam 22. The frame travel wheels 20 can be driven unpowered or by a power mechanism within a frame power box 2A mounted on the travel bracket. The power mechanism includes a frame drive motor 24, a chain transmission mechanism 25, and a frame power supply 26 mounted on the frame power box 2A.

[0025] The hopper walking mechanism 3 includes a field-shaped hopper walking frame 31, a hopper power box 32 installed in the middle of the back of the hopper walking frame 31, two pairs of hopper walking rollers 30 installed one-to-one at the four corners of the back of the hopper walking frame 31 and rolling one-to-one on the two main cross bars 10 of the frame 1, and a hopper walking drive mechanism installed in the hopper power box 32; at least one of the two pairs of hopper walking rollers 30 serves as a power wheel, and the rest serve as driven wheels; the hopper walking drive mechanism includes a hopper walking drive motor 33 connected to the hopper walking rollers 30 serving as power wheels through a coupling 34.

[0026] The fiber hopper 4 is installed on the front side of the hopper walking frame 31. The fiber hopper 4 includes a material head body 4A and two spreading rollers 4B that are spaced apart and span the front and rear wall panels of the material head body 4A and are located on the same horizontal plane. The outer surfaces of the two spreading rollers 4B are provided with mixing rods, and the mixing rods on the two spreading rollers 4B are staggered in the length direction; the rear ends of the two spreading rollers 4B are connected to the spreading roller drive mechanism installed in the hopper power box 32, and the spreading roller drive mechanism includes a spreading roller drive motor 41 installed at the rear end of one spreading roller 4B and a gear transmission mechanism 42 connected between the rotating shaft of the spreading roller drive motor 41 and the rear end of the other spreading roller 4B, so that the two spreading rollers 4B rotate synchronously in opposite directions.

[0027] The hopper travel drive motor 33 and the spreading roller drive motor 40 are powered by a hopper power supply 35 installed on the hopper power box 32 . The hopper power supply 35 can be installed on a side wall of the hopper power box 32 or inside the hopper power box 32 .

[0028] When the large-span concrete surface fiber spreader of the present invention is in operation, the fiber spreader is first moved to the construction site. The operator climbs onto the frame 1 of the fiber spreader and adds fibers to the fiber hopper 4. After the addition is completed, the operator climbs down the fiber spreader and can then start spreading the material. The operator controls the frame drive motor 24 to propel the fiber spreader forward, or manually propels the fiber spreader forward. When the fiber spreader reaches the construction area, the operator controls the spreading roller drive motor 40 to start spreading the fibers. The two spreading rollers 4B in the hopper 4 simultaneously break up the fibers and will not be stuck by the fibers. Using multiple mixing rods can make the fibers more evenly and loosely broken, making the discharge more uniform. While spreading the materials, the operator controls the hopper travel drive motor 33 to move the fiber hopper 4 laterally on the frame 1 to the unspread position. The fiber hopper 4 can move back and forth multiple times laterally on the frame 1. After the fiber spreading in one strip area is completed, the operator controls the frame drive motor 24 to push the fiber spreader forward or manually pushes the fiber spreader forward to spread the fiber in the next area.

[0029] The above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Those skilled in the art may make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the scope of the present invention and should be defined by the claims.

Claims

1. A large-span concrete surface fiber spreader, comprising a frame, a frame travel device, a hopper travel mechanism and a fiber hopper; characterized in that: The frame includes two parallel main cross bars, one above the other, and a plurality of vertical support bars spaced apart and connected between the two main cross bars. The frame travel device includes two pairs of frame travel wheels, each of which is mounted on both ends of the frame in a one-to-one correspondence through a travel bracket; The hopper travel mechanism includes a hopper travel frame, a hopper power box installed in the middle of the back of the hopper travel frame, two pairs of hopper travel rollers installed on the back of the hopper travel frame and rolling on the two main cross bars of the frame in a one-to-one correspondence, and a hopper travel drive mechanism installed in the hopper power box; The fiber hopper is installed on the front side of the hopper walking frame. The fiber hopper includes a material head body and two spreading rollers that are spaced apart and span the front and rear wall panels of the material head body and are located on the same horizontal plane. Mixing rods are provided on the outer surfaces of the two spreading rollers, and the mixing rods on the two spreading rollers are staggered in the length direction; the rear ends of the two spreading rollers are connected to the spreading roller drive mechanism installed in the hopper power box.

2. The large-span concrete surface fiber spreader according to claim 1, characterized in that: The frame further comprises a plurality of diagonal support rods connected between the two main cross rods and located between every two adjacent vertical support rods.

3. The large-span concrete surface fiber spreader according to claim 1, characterized in that: The traveling support includes a column connected to one end of the frame and having a length greater than the vertical support rod, an axle mounting beam longitudinally connected to the lower end of the column, and two oblique columns connected one-to-one between the two ends of the axle mounting beam and the top of the column; each pair of frame traveling wheels is mounted one-to-one at both ends of the axle mounting beam.

4. The large-span concrete surface fiber spreader according to claim 1, characterized in that: The frame travel device also includes two sets of power mechanisms connected to the two pairs of frame travel wheels in a one-to-one correspondence.

5. The large-span concrete surface fiber spreader according to claim 1, characterized in that: The hopper travel drive mechanism includes a hopper travel drive motor and a synchronous gear transmission mechanism or a synchronous belt transmission mechanism connected between the hopper travel drive motor and a hopper travel roller.

6. The large-span concrete surface fiber spreader according to claim 1, characterized in that: The spreading roller drive mechanism includes a spreading roller drive motor installed at the rear end of one spreading roller and a gear transmission mechanism connected between the rotating shaft of the spreading roller drive motor and the rear end of the other spreading roller, so that the two spreading rollers rotate synchronously in opposite directions.

7. The large-span concrete surface fiber spreader according to claim 1, characterized in that: The hopper power box is also provided with a hopper power supply.

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