CN218492202U

CN218492202U - Rubble spreader is used in UHPC construction

Info

Publication number: CN218492202U
Application number: CN202222045394.5U
Authority: CN
Inventors: 张法; 吴新印; 李亚波; 喻满; 刘旭东; 莫富文
Original assignee: Hunan Zhonglu Huacheng Bridge Technology Co ltd
Current assignee: Hunan Zhonglu Huacheng Bridge Technology Co ltd
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2023-02-17
Anticipated expiration: 2032-08-04

Abstract

A broken stone spreader for UHPC construction belongs to the field of engineering construction equipment. It solves current dispensing rubble inhomogeneous, dispensing rubble inefficiency scheduling technical problem. The key points of the technical scheme are as follows: rubble dispensing frame 1, motor 2, feed bin 3, striker plate 4 and roller bearing 5, 1 upper end of rubble dispensing frame is equipped with feed bin 3, and 1 one side of rubble dispensing frame is equipped with motor 2, and the opposite side is equipped with roller bearing 5, the discharge gate of feed bin 3 is located and is equipped with striker plate 4 on the direction of rotation one side of roller bearing 5 and the tangential direction of 3 discharge gates of feed bin and roller bearing 5. It is mainly applied to the spreading of the crushed stones for UHPC construction.

Description

Rubble spreader is used in UHPC construction

Technical Field

The utility model belongs to engineering construction equipment field, concretely relates to rubble spreader equipment is used in construction of ultra high performance concrete (hereinafter referred to as UHPC).

Background

At present, a steel structure bridge has the advantages of light self weight, good durability, high tensile strength, compression strength and shear strength of steel, good plasticity and toughness, and meanwhile, the steel is a recyclable resource and can be recycled after the whole life cycle, so that the generation of construction waste is reduced.

However, under the current large environment that the traffic volume is increasingly increased in China, the steel bridge deck has the problems that the steel bridge is easy to damage in pavement and the steel bridge deck is easy to fatigue crack.

After UHPC construction, in order to increase the connection between a UHPC thin layer and an asphalt wearing layer, a shot blasting roughening mode is usually adopted on the surface of the UHPC thin layer, and the purpose of increasing the contact surface of the UHPC and the asphalt is achieved by expanding the structural depth of the UHPC surface. When the longitudinal slope of the UHPC construction environment is more than 4 percent, a mode of spreading a layer of broken stone on the surface of the UHPC can be adopted, the contact area between the UHPC and the asphalt wearing layer is further increased, and the broken stone can play a certain anti-sliding role.

Aiming at the material characteristics of UHPC, in order to ensure that the connection between the gravel and the UHPC layer is tighter, the gravel is spread immediately after the UHPC is vibrated and leveled, and the gravel and the UHPC are maintained together. In this context, the stone spreader should be operated after the UHPC vibrating leveling device and before the UHPC coating device during construction.

The gravel spreader is required to walk forwards and backwards along the longitudinal bridge of the bridge and move left and right along the transverse bridge of the bridge, so that the gravel spreading task of the whole working face can be conveniently completed, and the purpose of spreading gravel with different particle sizes can be achieved by adjusting the gap between the baffle device and the rolling shaft.

Disclosure of Invention

The utility model aims at providing a rubble spreader is used in UHPC construction.

The utility model provides a technical scheme that its technical problem adopted is: including rubble dispensing frame 1, motor 2, feed bin 3, striker plate 4 and roller bearing 5, 1 lower part of rubble dispensing frame is equipped with running gear 7, conveniently removes rubble dispenser, and 1 upper end of rubble dispensing frame is equipped with feed bin 3, and 1 one side of rubble dispensing frame is equipped with motor 2, and the opposite side is equipped with roller bearing 5, feed bin 3 sets up in roller bearing 5 top, and the material in the feed bin can directly fall on the roller bearing along with the roller bearing moves together, and the discharge gate of feed bin 3 is located roller bearing 5's direction of rotation one side, prevents that the material from landing around the roller bearing direction of rotation, be equipped with striker plate 4 on 3 discharge gates of feed bin and the tangential direction of roller bearing 5, because the material is thrown away fast along with the roller bearing rotation and the roller bearing has a take the altitude with construction ground, makes the material splash easily, leads to the density of the required material of construction can not reach the requirement, so set up the striker plate and slow down the material speed of throwing away and with the steady direction of material to construction ground.

The utility model discloses a rubble dispensing frame 1 is connected at 4 both ends of striker plate, and 4 inclination of striker plate are 80 ~40, and the speed that the material was thrown away is faster the rotational speed of roller bearing is faster, and for the material density that better realization needs, striker plate inclination just is big more, makes the material fall to the construction road surface fast, inclination generally refers to ground, with the angle on ground, when the construction face is the slope face such as pontic, can refer to ground also can refer to the bridge floor as required.

The utility model discloses a when roller bearing 5's direction of rotation is clockwise, use the circular cross section of roller bearing as the benchmark promptly, the clockwise rotation of cross section, the discharge gate is located roller bearing 5's the upper right side, about the perpendicular line on the centre of a circle perpendicular to ground of following circular cross section promptly divides as the benchmark, circular cross section's the upper right side.

The utility model discloses a when roller bearing 5's direction of rotation is anticlockwise, use the circular cross section of roller bearing as the benchmark promptly, the cross section anticlockwise is rotatory, and the discharge gate is located roller bearing 5's upper left side, divides about following the perpendicular to the line of the centre of a circle perpendicular to ground of circular cross section promptly as the benchmark, circular cross section's upper left side.

The utility model discloses a discharge gate position is set for and is the extrusion that receives the top material in order to prevent that the below material from roller bearing both sides landing, makes the material lay to the construction face and distributes unevenly, and easy windrow does not reach construction requirement and increases engineering time and construction cost.

The utility model discloses a discharge gate one side of feed bin 3 is equipped with accuse material device 6 and is adjustable and the distance between the roller bearing 5, accuse material device 6 moves about along the feed bin lateral wall, increases or reduces the clearance between discharge gate and the roller bearing 5, controls feed bin discharging speed and the even distribution of material through accuse material device; ensure that every time the materials are discharged one by one or in a row.

The utility model discloses a motor output shaft lug connection roller bearing 5 in rubble dispensing frame 1 drives roller bearing 5 and rotates.

The utility model discloses a principle is that the material leaves the feed bin through the rotatory drive of roller bearing, and the material receives centrifugal force's influence, is thrown away by the roller bearing and falls onto the striker plate, and the flight speed that the striker plate slowed down the material makes its slow whereabouts to the construction road surface, and the striker plate still plays the more convenient control material of guide effect simultaneously and lays to the density on construction road surface.

The utility model discloses the calculation of the volume of paving of rubble, because some roll of slip of rubble in the construction, and the rubble bounces to all around when contacting with the striker plate, consequently need revise the quality mg of the single rubble that calculates and the total number n of the required spheroid of full construction area, and the correction coefficient is K1, K2 respectively, striker plate distance m; the paving amount of the macadam is then calculated according to the following formula: the utility model discloses a road dam, N =1.2771 [ K1 sin theta 1-K1 cos theta 1)/m 1+ √ (((K1 × √ (2 h/K1)/(2 × tan theta 2)) ^2+ (K1 × √ (2 h/K1)) ^ 2)/m 2) K2, wherein, N is the amount of paving, correction coefficient K1 is the mass average value of rubble, correction coefficient K2 is 4.7607, h is the height of gyro wheel to the striker plate, h = K1 × t ^2/2, theta 1 is striker plate inclination angle, theta 2 is the angle that the rubble is thrown off to the striker plate, theta 2= (90-theta 1)/2, m1 is the distance that rubble slides on the striker plate, m2 is the distance that rubble from the gyro wheel to the striker plate, the utility model discloses effectively solved to the determination of the amount of paving, for the different angles of rubble that are thrown off, thereby the simple and accurate calculation can be avoided through the loaded down with trivial details of road dam plate.

The utility model has the advantages that: the area of spreading the crushed stones is effectively and uniformly controlled, the spreading uniformity is ensured, the crushed stones with different particle sizes are quickly and effectively spread, and the spacing and the density of the spread crushed stones per square meter are controlled within a certain range; it is mainly applied to UHPC engineering construction.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic view showing the relationship between the clockwise rotation of the roller and the discharge hole of the present invention;

FIG. 4 is a schematic view showing the relationship between the counterclockwise rotation of the roller and the discharge hole of the present invention;

FIG. 5 is a schematic view showing the relationship between the gravel scattering density and the inclination angle of the striker plate;

FIG. 6 is a schematic view showing the relationship between the density of crushed stone spread and the rotational speed of the roller according to the present invention;

fig. 7 is a schematic view of the material flow of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Embodiment 1, referring to fig. 1 to 7, the present invention includes: the device comprises a macadam spreading rack 1, a motor 2, a bin 3, a striker plate 4 and a roller 5, wherein a walking device 7 is arranged at the lower part of the macadam spreading rack 1, the macadam spreading machine is convenient to move, the motor 2 is arranged at one end of the macadam spreading rack 1, the roller 5 is arranged at the other end of the macadam spreading rack, the bin 3 is arranged above the roller 5, materials in the bin can directly fall onto the roller and move along with the roller, a discharge port of the bin 3 is located on one side of the rotating direction of the roller 5, the materials are prevented from sliding back and forth along the rotating direction of the roller, the striker plate 4 is arranged on one side of the rotating direction of the roller 5, the materials are rapidly thrown out along with the rotation of the roller, the roller and the construction ground have a certain height, the materials are easy to splash, the density of the materials required for construction cannot meet requirements, the striker plate is arranged to slow down the throwing-out speed of the materials and stably guide the materials to the construction ground, the two ends of the striker plate 4 are connected with the spreading rack 1, the striker plate 4, the inclination angle of 80-40 degrees is generally referred to the ground, and the ground can also referred to the ground according to requirements when the construction surface is a bridge or the like.

The utility model discloses a when roller bearing 5's direction of rotation is clockwise, use the circular cross section of roller bearing as the benchmark promptly, the clockwise rotation of cross section, the discharge gate is located roller bearing 5's upper right side, divides about following the perpendicular to the line of the centre of a circle perpendicular to ground of circular cross section promptly as the benchmark, circular cross section's upper right side.

The utility model discloses a when roller bearing 5's direction of rotation was the counter clockwise, use the circular cross section of roller bearing as the benchmark promptly, the counter clockwise of cross section is rotatory, and the discharge gate is located roller bearing 5's upper left side, and the perpendicular line on the centre of a circle perpendicular to ground along circular cross section promptly divides left and right sides, circular cross section's upper left side as the benchmark.

Example 2, referring to fig. 1-7, the roller speed range is 0 r/min-80 r/min; the distance between the discharge port and the roller can be adjusted to be 0 mm-50 mm; the density of the scattered gravels is 0-100 kg/m ² (ii) a The rest of the embodiments are the same as any other embodiment or combination of 2 or more embodiments of the present invention.

Embodiment 3, referring to fig. 1 to 7, a motor is started, the motor drives a roller to rotate, a baffle adjusting device is adjusted after the particle size of crushed stone is known, and the walking device is controlled to move while the crushed stone is discharged; the rest of the embodiments are the same as any other embodiment or combination of 2 or more embodiments of the present invention.

Embodiment 4, referring to fig. 1 to 7, because some of the rubbles during construction roll in a sliding manner and bounce around when the rubbles are in contact with the striker plate, the calculated mass mg of a single rubble and the total number n of spheres required to cover the construction area need to be corrected, the correction coefficients are K1 and K2, and the striker plate distance m; the paving amount of the macadam is then calculated according to the following formula: n =1.2771 [ K1 sin θ 1-K1 cos θ 1 ]/m 1+ √ (((K1 × Σ √ (2 h/K1)/(2 × tan θ 2)) ^2+ (K1 × Σ 2 (2 h/K1)) ^ 2)/m 2 ] K2, where N is the amount of paving, the correction factor K1 is the mass average of the crushed stones, the correction factor K2 is 4.7607, h is the height of the roller to the striker plate, h = K1 × t ^2/2, θ 1 is the striker plate inclination angle, θ 2 is the angle at which the crushed stones are thrown off to the striker plate, θ 2= (90- θ 1)/2, m1 is the distance at which the crushed stones slide on the striker plate, and m2 is the distance from the roller to the striker plate; the utility model discloses effectively solved the definite problem about the volume of paving on the construction road, can both carry out accurate quantitative calculation to the striker plate when adopting different angles to avoided confirming through loaded down with trivial details experiment, and calculated simply, the remainder is the same the utility model discloses an arbitrary other embodiment or the combination of embodiment more than 2.

Example 5, referring to fig. 1 to 7, when the rotation speed of the rollers reaches 40 r/min, K1=0.75, the throwing speed of the material reaches 0.67 m/s, and the inclination angle of the striker plate is 60 °, the gravel spreader for UHPC construction moves at a constant speed, and the density of the gravel on the construction road is 23kg/m ² 。

Example 9, referring to fig. 1 to 7, when the rotation speed of the rollers reaches 80 r/min, the throwing speed of the material reaches 1.34 m/s, and the inclination angle of the striker plate is 60 °, the crushed stone spreader for UHPC construction moves at a constant speed, and the density of the crushed stones on the construction road is 98kg/m ² 。

Example 10 referring to fig. 1 to 7, when the inclination angle of the striker plate is 40 °, the rotation speed of the roller reaches 60 r/min, which is the same as that of fig. 1When the throwing speed of the materials reaches 0.97 m/s, the gravel spreader for UHPC construction moves at a constant speed, and the density of the gravel on the construction road is 20kg/m ² 。

Example 13, referring to fig. 1 to 7, when the striker plate inclination angle is 80 °, the roller rotation speed reaches 60 r/min, and the material throwing speed reaches 0.97 m/s, the crushed stone spreader for UHPC construction moves at a constant speed, and the density of crushed stones on the construction road is 96kg/m ² 。

Claims

1. The utility model provides a rubble spreader is used in UHPC construction which characterized by: it includes rubble dispensing frame (1), motor (2), feed bin (3), striker plate (4) and roller bearing (5), rubble dispensing frame (1) upper end is equipped with feed bin (3), and rubble dispensing frame (1) one side is equipped with motor (2), and the opposite side is equipped with roller bearing (5), the discharge gate of feed bin (3) is located and is equipped with striker plate (4) on the direction of rotation one side of roller bearing (5) and the tangential direction of feed bin (3) discharge gate and roller bearing (5).

2. The crushed stone spreader for UHPC construction according to claim 1, wherein: the two ends of the striker plate (4) are connected with the gravel spreading rack (1), and the inclination angle of the striker plate (4) and the horizontal plane is 80-40 degrees.

3. The crushed stone spreader for UHPC construction according to claim 1 or 2, wherein: when the rotating direction of the rolling shaft (5) is clockwise, the discharge hole is positioned at the upper right part of the rolling shaft (5).

4. The crushed stone spreader for UHPC construction according to claim 1 or 2, wherein: when the rotating direction of the rolling shaft (5) is anticlockwise, the discharge hole is positioned at the upper left of the rolling shaft (5).

5. The crushed stone spreader for UHPC construction according to claim 1, wherein: one side of a discharge hole of the bin (3) is provided with a distance between the adjustable material control device (6) and the roller (5), and the material control device (6) moves up and down along the side wall of the bin to increase or reduce a gap between the discharge hole and the roller (5).