Self-compacting concrete mixing hopper device

Abstract

The utility model discloses a self-compacting concrete mixing hopper device which comprises a cylindrical charging bucket, a conical funnel is arranged at the lower part of the cylindrical charging bucket, a discharge port is formed in the bottom of the cylindrical charging bucket, and an opening is formed in the upper end of the cylindrical charging bucket; the charging bucket is provided with a supporting device and a stirring device; the supporting device comprises four symmetrical supporting legs which are vertically fixed on the outer wall of the charging bucket and are connected through a cross beam; hanging rings are arranged at the top ends of the supporting legs; the stirring device comprises stirring blades and a driving motor, multiple layers of stirring blades are arranged on the rotating shaft from top to bottom, at least two layers of arc-shaped three-blade stirring blades are arranged in the cylindrical container of the charging bucket, and two stirring blades are arranged in the bottom area of the charging bucket. According to the hopper device disclosed by the utility model, the combined multi-layer and multi-stage stirring blades are adopted, so that concrete in the charging bucket is uniformly mixed without dead angles, self-compacting concrete can be prevented from being segregated in the transportation process, excellent quality is continuously kept, the transportation time of the concrete is prolonged, the problem that the performance of the concrete is reduced due to long-time transportation is solved, and good flowability of the concrete is kept.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-speed railway ballastless track construction, relates to the technical field of concrete processing equipment design in high-speed railway ballastless track construction, and specifically relates to a mixing hopper device for self-compacting concrete of high-speed railway ballastless track. Background Art

[0002] With the continuous development of my country's high-speed rail technology, the CRTS III slab track technology with independent intellectual property rights has been fully applied. In this technology, the self-compacting concrete layer is an important component of the CRTS III slab track. As the core component of the CRTS III slab track, the physical quality control plays a key role in the ballastless track construction process.

[0003] During the pouring process of self-compacting concrete, the gantry crane transports the hopper filled with self-compacting concrete to the track plate to be poured. In the above process, the concrete may segregate due to long transportation distance or bumpy driving. In order to avoid the above adverse effects, a hopper with stirring function needs to be designed. Summary of the invention

[0004] The utility model discloses a mixing hopper device for pouring self-compacting concrete. The utility model aims to provide a self-compacting concrete mixing hopper device which is easy to operate, safe, low-cost, strong and durable, and can effectively improve the pouring quality of self-compacting concrete, ensure construction quality and reduce production costs.

[0005] The utility model provides the following technical solutions:

[0006] A self-compacting concrete mixing hopper device includes a material tank, characterized in that: the material tank is a cylindrical container, the lower part is a conical funnel with a discharge port arranged at the center of the bottom, and the upper end is open; the material tank is also provided with a supporting device and a stirring device;

[0007] The support device comprises four support legs vertically fixed to the outer wall of the tank, the four support legs are symmetrically arranged along the center of the tank, and a support leg crossbeam is connected and fixed between adjacent support legs; a lifting ring is welded and fixed at the top of each support leg;

[0008] The stirring device includes stirring blades and a driving motor. The driving motor is fixed on a support rod and arranged at the center of the upper opening of the material tank. A plurality of stirring blades arranged from top to bottom are arranged on a rotating shaft driven by the motor. Among them, at least two layers of arc-shaped three-blade stirring blades are arranged in the cylindrical container of the material tank, and a layer of two-blade stirring blades is arranged in the bottom area of ​​the material tank.

[0009] Furthermore, the arc-shaped three-leaf stirring blade is composed of three stirring blades centrally symmetrically arranged on the stirring shaft, each stirring blade has an arc structure with the same radius, and each stirring blade is radially arranged and one end is connected and fixed to the stirring shaft.

[0010] The three stirring blades of the arc-shaped three-leaf stirring blade are located on the same virtual spherical surface after being fixed, or on respective virtual spherical surfaces that are symmetrical to the center.

[0011] Furthermore, the two-blade stirring blade is composed of two straight-rod stirring blades symmetrically arranged on the stirring shaft.

[0012] Furthermore, the stirring shaft is a sleeve structure, which is detachably mounted and fixed to the stirring rotating shaft driven by the motor.

[0013] Furthermore, the support rod is a well-shaped structure and is symmetrically arranged and fixed on the upper opening of the material tank.

[0014] Furthermore, the discharge port is provided with a draw-plate discharge valve, one side of which is rotatably fixed to the side wall of the discharge hole through a switch shaft, and is driven to slide and open and close in the inclined material port slide groove by a switch pull rod fixed by welding.

[0015] The utility model discloses a self-compacting concrete mixing hopper device, which adopts a combined multi-layer and multi-stage stirring blade to evenly mix the concrete in the material tank without dead corners, and can prevent segregation of the self-compacting concrete during transportation and continuously maintain excellent quality, thereby increasing the transportation time of the concrete, compensating for the problem of reduced performance of the concrete due to long-term transportation, maintaining its good fluidity, and effectively preventing the self-compacting concrete from clogging the track plate cavity, thereby reducing the possibility of rework and repair, improving the construction quality and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a top view schematic diagram of the stirring hopper of the utility model;

[0017] Figure 2 This is a front view schematic diagram of the stirring hopper of the utility model;

[0018] Figure 3 This is a schematic diagram of a stirring hopper stirrer of the utility model;

[0019] Figure 4 This is a schematic diagram of the arc-shaped three-leaf stirring blade of the stirring hopper of the utility model;

[0020] Figure 5 It is a schematic diagram of a stirring hopper with a shaft and two stirring blades of the utility model.

[0021] In the figure: 1. arc-shaped three-blade stirring blade, 2. two-blade stirring blade, 3. shaft drive motor, 4. motor, 5. rotating shaft, 6. material tank, 7. support leg, 8. support leg cross beam, 9. support rod, 10. switch shaft, 11. switch pull rod, 12. unloading valve, 13. lifting ring. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with specific implementation methods. The specific implementation methods are further descriptions of the principles of the present invention and do not limit the present invention in any way. Technologies identical or similar to the present invention do not exceed the scope of protection of the present invention.

[0023] Combined with the attached pictures.

[0024] As shown in the figure, the mixing hopper device of the self-compacting concrete of the utility model is composed of an arc-shaped three-blade stirring blade 1, a two-blade stirring blade with a shaft 2, a rotating shaft driving motor 3, a motor 4, a rotating shaft 5, a material tank 6, a support leg 7, a support leg tie beam 8, a support rod 9, a discharge valve switch shaft 10, a discharge valve operating wrench 11, a discharge valve 12, a lifting ring 13 and other components.

[0025] In the stirring hopper device of this example, the motor 4, the shaft drive motor 3 and the rotating shaft 5 are on the same vertical line, the rotating shaft 5 has a diameter of 60mm and a length of 0.9m; the material tank 6 is composed of a cylinder part, a cone part and a hollow part, and its cylinder diameter is 1.6m, the cylinder height is 0.8m, the cone height is 0.45m, the bottom cylinder diameter is 0.2m, the cylinder height is 0.15m, the hollow height is 0.15m, and it is made of 3mm steel plate with a total volume of 2 cubic meters; 80×80×8mm angle steels are welded on the four sides of the material tank 6 as legs 7, and 50×50×5mm angle steels are welded between the legs 7 as a support system The beam 8 is reinforced; a lifting ring 13 is provided on the top of the material tank 6, which is made of φ20mm round steel and is used to connect the lifting ear and the wire rope for easy lifting; four 30mm×30mm rectangular square steel support rods 9 are welded on the top of the material tank 6, and the support rods 9 are connected to the stirring device with bolts to reinforce the stirring device; the switch device of the hopper unloading valve 12 is a hinged opening and closing switch that rotates along the inner wall shaft. The diameter of the opening and closing piece is 220mm. The switch operation is simple, the opening and closing process is labor-saving and the airtightness is good; the stirring hopper has the problem that the motor needs to be powered on to work. During use, the generator set is shared with the gantry crane to realize the stirring function.

[0026] The blades of the three-blade arc stirring blade 1 are made of 30mm×30mm rectangular square steel, welded with φ64mm hollow steel pipes, and the diameters of the arc surface are 1m, 1.2m, 1.5m, and 0.7m from top to bottom. The three-blade arc stirring blade structure enhances the stability of the machine, increases the contact area between the blade and the concrete, and effectively improves the performance of the concrete; a two-blade stirring blade 2 is provided at the bottom, with an axis length of 0.25m, and the blades are made of 30mm×30mm rectangular square steel. The stirring of the blades avoids the phenomenon of coarse aggregate sinking to the bottom; the blades and the rotating shaft 5 are connected by detachable bolts, which is convenient for disassembly, replacement and cleaning, and is also conducive to the replacement and adjustment of the blades. Further, the arc three-blade stirring blade is composed of three stirring blades arranged symmetrically on the stirring shaft, each stirring blade has an arc structure with the same radius, and each stirring blade is arranged radially and one end is connected and fixed to the stirring shaft.

[0027] As shown in the figure, this embodiment is provided with four layers of arc-shaped three-blade stirring blades 1; wherein, the three stirring blades of the first layer are fixed and located on their respective centrally symmetrical virtual spherical surfaces, with the arc-shaped concave surfaces facing downward; the three stirring blades of the second layer are fixed and located on their respective centrally symmetrical virtual spherical surfaces, with the arc-shaped concave surfaces facing upward; the third layer is located on the same virtual spherical surface, with the arc-shaped concave surfaces facing upward; the fourth layer is located on the same virtual spherical surface, with the arc-shaped concave surfaces facing downward. The different settings of the arc-shaped three-blade stirring blades 1 of this embodiment combine the characteristics of the arc-shaped stirring blades to achieve stirring of the material tank without dead angles.

[0028] In this embodiment, the inner wall of the material tank should be moistened before the hopper is used, and then the hopper is lifted by a gantry crane to the material collection point to receive the self-compacting concrete. During the material collection process, the material tank 6 is placed on the ground and supported by the support legs 7, and the discharge valve 12 is closed. After the material collection is completed, it is lifted to the operation point by a gantry crane.

[0029] During transportation, the motor 4 is connected to the gantry crane power supply, and the motor 4 is started to make the shaft drive motor 3 start working. The rotating shaft 5 drives the arc-shaped three-blade stirring blade 1 and the two-blade stirring blade 2 with shaft to stir the self-compacting concrete, so that the self-compacting concrete is continuously in a stirring state during transportation.

[0030] After being transported to the designated location, the unloading valve operating wrench 11 is operated to rotate the unloading valve 12 around the unloading valve switch shaft 10, and the discharge of the self-compacting concrete in the material tank 6 is controlled by opening and closing the unloading switch.

[0031] After the pouring is completed, use clean water to clean the failed self-compacting concrete on the inner wall of the tank 6 and the blades 1 and 2 to confirm that the residual self-compacting concrete in the tank 6 will not affect the engineering quality of the next self-compacting pouring.

[0032] After use, the hopper blades 1 and 2 should be regularly disassembled for cleaning, maintenance or replacement. The blades 1 and 2 are connected to the rotating shaft 5 by bolts. The motor 4 should be turned off during the disassembly process to ensure the safety of the disassembly construction.

Claims

1. A self-compacting concrete mixing hopper device, comprising a material tank, characterized in that: The material tank is a cylindrical container, with a conical funnel at the bottom and a discharge port at the center of the bottom, and an opening at the top; the material tank is also provided with a supporting device and a stirring device; The support device comprises four support legs vertically fixed to the outer wall of the tank, the four support legs are symmetrically arranged along the center of the tank, and a support leg crossbeam is connected and fixed between adjacent support legs; a lifting ring is welded and fixed at the top of each support leg; The stirring device includes stirring blades and a driving motor. The driving motor is fixed on a support rod and arranged at the center of the upper opening of the material tank. A plurality of stirring blades arranged from top to bottom are arranged on a rotating shaft driven by the motor. Among them, at least two layers of arc-shaped three-blade stirring blades are arranged in the cylindrical container of the material tank, and a layer of two-blade stirring blades is arranged in the bottom area of ​​the material tank.

2. The self-compacting concrete mixing hopper device according to claim 1, characterized in that: The arc-shaped three-leaf stirring blade is composed of three stirring blades centrally symmetrically arranged on the stirring shaft, each stirring blade has an arc structure with the same radius, each stirring blade is radially arranged, and one end of each stirring blade is connected and fixed to the stirring shaft.

3. The self-compacting concrete mixing hopper device according to claim 2, characterized in that: The three stirring blades of the arc-shaped three-leaf stirring blade are located on the same virtual spherical surface after being fixed, or on respective virtual spherical surfaces that are symmetrical to the center.

4. The self-compacting concrete mixing hopper device according to claim 2, characterized in that: The two-blade stirring blade is composed of two straight-rod stirring blades symmetrically arranged on the stirring shaft.

5. The self-compacting concrete mixing hopper device according to any one of claims 2 to 4, characterized in that: The stirring shaft is a sleeve structure and is detachably sleeved and fixed to a stirring rotating shaft driven by a motor.

6. The self-compacting concrete mixing hopper device according to claim 5, characterized in that: The support rods are of a well-shaped structure and are symmetrically arranged and fixed on the upper opening of the material tank.

7. The self-compacting concrete mixing hopper device according to claim 5, characterized in that: The discharge port is provided with a draw-plate type discharge valve, one side of which is rotatably fixed to the side wall of the discharge hole through a switch shaft, and is driven to slide and open and close in the inclined material port slide groove by a switch pull rod fixed by welding.

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