Earth-rock dam filling fixed mirror warming system

Abstract

The utility model discloses a kind of earth-rock dam filling fixed heliostat temperature increasing systems, by foundation support, control system and mirror surface assembly constitute, foundation support includes column fixed in foundation;Control drive system includes control mechanism and its control operation day by day driving mechanism;Control mechanism includes control cabinet, pitch angle instrument, horizontal travel switch and proximity switch;Day by day driving mechanism is set in column top, including horizontal rotation mechanism and pitch rotation mechanism;Mirror surface assembly is composed of reflecting mirror group and the steel truss of fixed load reflecting mirror group;Steel truss includes one transversely arranged main support crossbeam, and the horizontal rotation mechanism support hinged in the middle part of support crossbeam rotates around column horizontal rotation with horizontal rotation mechanism support, and by pitch rotation mechanism drives axial pitch rotation around support crossbeam axis.The utility model can change the position of heating as required, flexible, widely applicable, and does not need heating pipeline, easy to install, without warm shed, low cost.

Description

Technical Field

[0001] This utility model belongs to the field of design technology for construction equipment in water conservancy and hydropower projects, and in particular to the field of design technology for construction equipment for the core wall filling of earth-rock dams in water conservancy and hydropower projects. Specifically, it relates to a heliostat heating system for filling earth-rock dams. Background Technology

[0002] In the construction of water conservancy and hydropower projects, large earth-rock dams are often built in high-altitude, cold, and remote areas with long construction periods. During winter construction, extremely low temperatures often cause the fill surface to remain frozen for extended periods, making normal construction impossible and severely shortening the effective construction time. Currently, during winter construction of gravel-soil core walls, overnight insulation of the compacted surface is generally achieved through composite geomembrane covering, loose soil covering, or a combination of both methods. The covering material is removed the following day when the temperature rises to positive and the soil surface is free of frozen soil or has thawed, allowing for further construction. When the ambient temperature is too low, especially when the core wall area is located in a location without sunlight, even during the day, normal construction cannot proceed. Existing methods for increasing soil temperature commonly include external heating, steam heating, and heated sheds. The energy supply for these methods primarily relies on electricity, fuel oil, or natural gas. While these methods can increase the temperature of the core wall filling area to some extent, they all have high energy consumption and, except for electricity, high carbon emissions, resulting in high construction costs. Summary of the Invention

[0003] The purpose of this invention is to provide a heliostat heating system for earth-rock dam filling. This heating system enables the construction of the dam core wall in high-altitude, cold regions, even in winter when temperatures are low and sunlight is absent. This extends the construction time for the dam core wall filling, ensures construction progress, improves construction quality, and reduces construction costs.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A heliostat heating system for earth-rock dam filling is used for heating during the construction of earth-rock dams with core walls. The system is characterized by comprising a foundation support, a control system, and a mirror assembly.

[0006] The basic support system includes columns fixed in the foundation;

[0007] The control drive system includes a control mechanism and a daily drive mechanism for its operation; the control mechanism includes a control cabinet, a pitch and tilt meter, a horizontal limit switch and a proximity switch; the daily drive mechanism is located on the top of the column and includes a horizontal rotation mechanism and a pitch rotation mechanism.

[0008] The mirror assembly is a planar or curved reflector array, consisting of a reflector group and a steel truss with a fixed load reflector group; the steel truss includes a transversely arranged main support beam, the middle of which is hinged to a horizontal rotation mechanism and rotates horizontally around the column with the horizontal rotation mechanism, and is driven by a pitch rotation mechanism to pitch around the support beam axially.

[0009] Furthermore, the steel truss of the fixed load reflector assembly includes: a horizontally arranged main support beam, multiple sets of cantilever beams fixed vertically and at intervals on the support beam, multiple sets of mirror plate mounting beams fixedly connected between each cantilever beam, the mounting beams fixing the reflector back plate by adjusting lugs, and the reflector being connected and fixed to the reflector back plate by ceramic plates and bolts to form a reflector array.

[0010] The horizontal rotation mechanism of this utility model includes a horizontal rotation support, a horizontal geared motor, and a horizontal geared motor adapter plate. The horizontal rotation support is installed and fixed on the horizontal geared motor and rotates around the horizontal plane as the motor rotates. Two parallel connecting ears are provided on the top of the horizontal rotation support, and the connecting ears are hinged to the main support beam. The horizontal geared motor is fixedly installed on the top of the column through the horizontal geared motor adapter plate.

[0011] Furthermore, the pitch-rotation mechanism includes an electric push rod; the electric push rod is hinged on a horizontal rotating support and rotates with the horizontal rotating support, and the push rod head of the electric push rod is hinged to the main support beam, driving the main support beam to pitch and rotate around an axis.

[0012] Furthermore, the column is connected to the concrete foundation by anchor bolts embedded in the concrete foundation. The middle of the column has a hole reserved for installing the daily control cabinet, and the top of the column has a flange for connecting to the upper structure.

[0013] Furthermore, a wire trough and a cable fixing bracket are fixed on the column, and the wire trough and the cable fixing bracket are fixed by bolts.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention relates to a device that utilizes solar energy. Compared to traditional fossil fuels or electricity, this invention is more energy-efficient, environmentally friendly, economical, safe, and convenient, and aligns with my country's current dual-carbon goals.

[0016] This invention successfully solves the problem that the construction of the core wall of earth-rock dams in high-altitude and cold regions is impossible when the winter temperature is low and there is no sunlight. It effectively extends the construction time of the core wall filling, ensures the construction progress, improves the construction quality, and reduces the construction cost.

[0017] This invention allows for flexible application and wide applicability, as the heating location can be changed arbitrarily according to needs. It also eliminates the need for heating pipes, simplifies installation, eliminates the need for a heated shed, and reduces costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the heliostat heating system of this utility model;

[0019] Figure 2 This is a partial schematic diagram of the drive device of this utility model.

[0020] The attached diagram is labeled as follows: 1—Column; 2—Daily control cabinet; 3—Horizontal rotating support; 4—Horizontal reducer; 5—Electric push rod; 6—Crossbeam; 7—Cantilever beam; 8—Reflector back plate; 9—Adjusting lug; 10—Reflector. Detailed Implementation

[0021] The present invention will be further described below with reference to specific embodiments. These specific embodiments are further explanations of the principle of the present invention and are not intended to limit the present invention in any way. Any technology that is the same as or similar to the present invention does not exceed the protection scope of the present invention.

[0022] Referring to the attached figures, the heliostat heating system for earth-rock dam filling in this embodiment is used for earth-rock dam filling with a core wall. The heliostat heating system consists of a foundation support, a control system, and a mirror assembly, wherein:

[0023] The control drive system includes a control mechanism and a daily drive mechanism for its operation; the control mechanism includes a control cabinet 2, a pitch and tilt meter, a horizontal limit switch and a proximity switch; the daily drive mechanism is located on the top of the column 1 and includes a horizontal rotation mechanism and a pitch rotation mechanism.

[0024] The mirror assembly is a planar or curved reflector array, consisting of a reflector group and a steel truss with a fixed load reflector group; the steel truss includes a transversely arranged main support beam 6, the middle of the support beam 6 is hinged to the horizontal rotation mechanism and rotates horizontally around the column 1 with the horizontal rotation mechanism, and is driven by the pitch rotation mechanism to pitch around the support beam 6 axially.

[0025] The foundation support includes a lower concrete foundation, which is securely connected to the bedrock via reinforcing bars, and anchor bolts are pre-embedded within the foundation. Column 1 is connected to the concrete foundation via the pre-embedded anchor bolts. A hole is pre-drilled in the middle of column 1 for installing the daily control cabinet 2, and a flange is located at the top of column 1 for connecting to the upper structure. Cable trays and cable fixing brackets are fixed to column 1 using bolts.

[0026] A horizontal reducer 4 is installed above the column 1. The horizontal reducer 4 is connected to the flange of the column 1 via a horizontal reducer adapter plate; a horizontal rotating support 3 is installed above the horizontal reducer 4. Connecting pin fixing lugs are provided on the side and above the horizontal rotating support 3.

[0027] The pitch electric actuator 5 is connected to the side connecting pin of the horizontal rotating support 3 and fixed to the lug plate, and is connected by the housing connecting pin of the electric actuator 5; the main support beam 6 is connected to the upper connecting pin of the horizontal rotating support 3 and fixed to the lug plate, and is connected by the beam rotating pin.

[0028] The mirror assembly can adjust its pitch attitude by driving the electric pitch actuator 5; and adjust its horizontal attitude by driving the horizontal reducer 4.

[0029] By controlling the drive system to automatically adjust the pitch and horizontal attitude of the heliostat, dual-axis tracking is achieved, maximizing the refraction of solar radiation onto the designated filling face, effectively increasing the solar radiation intensity of the working face, and thus increasing the ambient temperature of the working face.

[0030] See attached diagram. Figure 1 and Figure 2 This utility model provides a heliostat heating system for earth-rock dam filling, which can effectively increase the temperature of the filling area during winter construction.

[0031] The construction process of the heliostat heating system for earth-rock dam filling in this embodiment includes the following steps:

[0032] 1. Construction preparation work:

[0033] According to the construction drawings and the specific site conditions, the anchor rods and steel bars used for the heliostat heating system are cut at the steel bar plant. Before cutting, the quality of the steel should be inspected, and it can only be used after it passes the inspection.

[0034] Anchor bolts and steel bar processing are all completed in the steel bar factory. After cutting, burrs, slag and spatter should be removed from all types of steel and transported to the site by 10t farm vehicle for use. All tools are prepared.

[0035] The heliostat components were transported to the assembly site, and after acceptance, they were directed by professionals to begin assembly.

[0036] 2. Concrete foundation construction:

[0037] Before pouring the foundation concrete, pre-embedded C28 anchor bars with a length of 6m are installed as required. The heliostat foundation uses independent C30 reinforced concrete, with dimensions of 2m × 1.5m × 1.5m (length × width × height). Eight C28 anchor bars with a length of 6m are pre-embedded in the foundation, 4m into the rock and 2m exposed. A 60cm long hook is provided at the top, and M30 mortar is poured. Twelve 5.8 grade M30 anchor bolts are pre-embedded in the concrete foundation. Four C25 anchor bars with a length of 4m are provided below the bolts, 3m into the rock, and are firmly welded to the bolts. The foundation reinforcement cage uses C22 steel bars with a spacing of 20cm between rows. The anchor bar hooks are arranged on the outside of the reinforcement cage.

[0038] 3. Column installation:

[0039] Screw a nut onto each of the anchor bolts pre-embedded in the foundation, place column washers, and perform preliminary leveling. Hoist column 1 onto the anchor bolts, and install one column washer and two M30 nuts onto each anchor bolt in sequence. Adjust the column posture using a level, and finally tighten the nuts.

[0040] 4. Mirror assembly installation:

[0041] The entire mirror assembly consists of components such as a reflector group, a main support beam 6, a cantilever beam 7, and a drive device. The mirror assembly is installed by hoisting the whole assembly after it is assembled. The drive unit includes a horizontal reducer adapter plate, a horizontal reducer 4, a horizontal rotating support 3, and a pitch electric push rod 5. These components are assembled sequentially using connecting pins and connecting pin fixing lugs. Then, the main support beam 6 is lifted by hoisting equipment and installed on the horizontal rotating support 3. The main support beam 6 is rotated to a horizontal position by driving the pitch electric push rod 5. Before installing the cantilever beam 7, the adjusting lugs 9 are bolted to three different cantilever beams 7. The assembled cantilever beam 7 is then assembled with the horizontal beam connecting plate using bolts. After the cantilever height is uniformly adjusted, it is tightened. For the installation of the reflector assembly, the reflector 10 is placed on the assembly platform. The M6 ​​set screws are screwed into the glass ceramic sheet behind the mirror surface. At the same time, washers are placed on each nut. The reflector back plate 8 is placed above the reflector surface. The connecting plate on the reflector back plate 8 is slowly passed through the set screws on the ceramic sheet and finally supported by the adjusted nuts. Finally, washers are installed and nuts are tightened. The reflector assembly was then installed onto the adjusted cantilever, and the tilt of the reflector assembly was adjusted. Finally, the mirror assembly was lifted and installed onto column 1 using a lifting device.

[0042] 5. Installation of the control drive system:

[0043] The daily control cabinet 2 is fixed to the reserved holes on the column 1 using four control cabinet fixing ear plates and two control cabinet 2 mounting bending plates; the pitch and tilt meter is fixed to the main support beam 6 using the tilt meter mounting plate; the horizontal limit switch and the proximity switch are respectively installed below the top flange of the column 1 using the limit switch mounting plate and the proximity switch mounting plate; the remaining electrical control devices are installed on the column 1 by bolts.

[0044] 6. Inspection and Acceptance:

[0045] (1) Quality standards for cutting steel bars and anchor rods: The cut surfaces must be flush, and any defects must be repaired and ground as required. The width and length of the parts must meet the requirements of the construction drawings.

[0046] (2) The heliostat must be installed firmly and reliably.

[0047] (3) After installation, the heliostat is inspected to ensure that it works properly and can accurately refract sunlight onto the designated construction surface.

Claims

1. A heliostat heating system for earth-rock dam filling, used for heating during the construction of earth-rock dams with core walls, characterized in that: The heliostat heating system consists of a base support, a control system, and a mirror assembly, among which: The basic support system includes columns fixed in the foundation; The control drive system includes a control mechanism and a daily drive mechanism for its operation; the control mechanism includes a control cabinet, a pitch and tilt meter, a horizontal limit switch and a proximity switch; the daily drive mechanism is located on the top of the column and includes a horizontal rotation mechanism and a pitch rotation mechanism. The mirror assembly is a planar or curved reflector array, consisting of a reflector group and a steel truss with a fixed load reflector group; the steel truss includes a transversely arranged main support beam, the middle of which is hinged to a horizontal rotation mechanism and rotates horizontally around the column with the horizontal rotation mechanism, and is driven by a pitch rotation mechanism to pitch around the support beam axially.

2. The heliostat heating system for earth-rock dam filling according to claim 1, characterized in that: The steel truss of the fixed load reflector group includes: a horizontally arranged main support beam, multiple sets of cantilever beams fixed vertically and at intervals on the support beam, multiple sets of mirror plate mounting beams fixedly connected between each cantilever beam, the mounting beams fixing the reflector back plate by adjusting lugs, and the reflector being connected and fixed to the reflector back plate by ceramic plates and bolts to form a reflector array.

3. The heliostat heating system for earth-rock dam filling according to claim 1 or 2, characterized in that: The horizontal rotation mechanism includes a horizontal rotation support, a horizontal geared motor, and a horizontal geared motor adapter plate. The horizontal rotation support is installed and fixed on the horizontal geared motor and rotates around the horizontal plane as the motor rotates. Two parallel connecting ears are provided on the top of the horizontal rotation support, and the connecting ears are hinged to the main support beam. The horizontal geared motor is fixedly installed on the top of the column through the horizontal geared motor adapter plate.

4. The heliostat heating system for earth-rock dam filling according to claim 3, characterized in that: The pitch-rotation mechanism includes an electric push rod; the electric push rod is hinged on a horizontal rotating support and rotates with the horizontal rotating support; the push rod head of the electric push rod is hinged to the main support beam, driving the main support beam to pitch-rotate around an axis.

5. The heliostat heating system for earth-rock dam filling according to claim 4, characterized in that: The column is connected to the concrete foundation by anchor bolts embedded in the concrete foundation. The middle of the column has a hole reserved for installing the daily control cabinet, and the top of the column has a flange for connecting to the upper structure.

6. The heliostat heating system for earth-rock dam filling according to claim 5, characterized in that: The column is fixed with a wire trough and a cable fixing bracket, which are fixed with bolts.

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