A steel coal hopper installation positioning device for a thermal power plant

Abstract

The utility model provides a kind of thermal power plant steel coal bucket installation positioning device, belong to large steel structure installation technical field. Including: steel coal bucket, several installation supporting legs are equipped on the outer wall upper portion of steel coal bucket;Positioning assembly is arranged on the outer side of steel coal bucket, including a pair of horizontal base, a pair of longitudinal base is detachably arranged between the inner side wall of horizontal base, C-shaped plate is equipped in the top of horizontal base and longitudinal base middle, jack is equipped on the inside three side walls of C-shaped plate, the telescopic end head of jack is equipped with push head placed in the outer side of installation supporting leg. The utility model is positioned by four direction positioning assembly, relies on the jack arranged on the three inner walls of C-shaped plate, realizes the horizontal plane translation fine adjustment of steel coal bucket by operating jack drive push head to move, combined with the scale line of the top of C-shaped plate, operator can control the adjustment amount of each step, easily realize positioning operation, positioning accuracy is higher, it is labor-saving to operate, reduce labor intensity, reduce security risk.

Description

Technical Field

[0001] This utility model provides an installation and positioning device for steel coal hoppers in thermal power plants, belonging to the field of large steel structure installation technology. Background Technology

[0002] In the boiler system of a thermal power plant, the steel coal hopper is a key component connecting the coal feeder and the coal storage bin. Its function is to smoothly transport raw coal from the upper coal bin to the lower coal feeding equipment. The steel coal hopper is typically a massive, complex, and extremely heavy funnel-shaped steel structure. During installation, this behemoth needs to be hoisted to a designated position on the boiler steel frame, tens of meters high, using large lifting equipment (such as tower cranes or crawler cranes), and its mounting legs must be precisely placed on the pre-embedded steel plates in the concrete installation foundation.

[0003] In existing technologies, the installation and positioning of steel coal hoppers mainly rely on traditional methods. Typically, after a crane roughly lifts the steel coal hopper into place, installers need to use tools such as crowbars and hand-operated hoists to manually fine-tune it on a confined, high-altitude work surface. The drawbacks of this method are significant: workers must perform strenuous physical labor under or around the suspended load, the operation is laborious, using crowbars to pry forcefully poses a huge safety hazard, and manual adjustment relies entirely on the worker's experience and intuition, repeatedly cycling through lifting, measuring, lowering, and adjusting, which is not only laborious but also results in insufficient positioning accuracy. Therefore, this utility model provides an installation and positioning device for steel coal hoppers in thermal power plants. Utility Model Content

[0004] The technical problem solved by this utility model is that the positioning accuracy is not high enough, the labor intensity is high, it is difficult to pry it open manually with a crowbar, and there are huge safety hazards.

[0005] To solve the technical problem, the technical solution provided by this utility model is: a steel coal hopper installation and positioning device for thermal power plants, comprising:

[0006] A steel coal hopper, wherein the upper part of the outer wall of the steel coal hopper is provided with several mounting legs;

[0007] The positioning assembly, located on the outside of the steel coal hopper, is placed on the top of the concrete mounting base bevel of the steel coal hopper. It includes a pair of transverse bases and a pair of detachable longitudinal bases located between the inner sidewalls of the transverse bases. A C-shaped plate is provided at the top center of both the transverse bases and the top center of both the longitudinal bases. A jack is provided on the three inner sidewalls of the C-shaped plate. The telescopic end of the jack is provided with a pusher located on the outside of the mounting leg.

[0008] Furthermore, the horizontal base and the vertical base are symmetrically provided with mounting holes on both sides of the top, so as to fix the horizontal base and the vertical base to the top of the steel coal hopper concrete mounting seat bevel by anchor bolts.

[0009] Furthermore, the top of the concrete mounting base of the steel coal hopper is provided with several embedded steel plates around the perimeter for welding with the mounting legs.

[0010] Furthermore, threaded rods are symmetrically provided on both sides of the longitudinal base, and through holes are provided on the transverse base for the threaded rods to pass through. Locking nuts that fit against the outer side wall of the transverse base are threaded onto the threaded rods.

[0011] Furthermore, the C-shaped plate is fully welded and fixedly installed on the top of the transverse base and the longitudinal base, and the bottom of the two side walls of the C-shaped plate are symmetrically provided with reinforcing welding ears that are fixedly connected to the top of the transverse base and the longitudinal base.

[0012] Furthermore, the top of the C-shaped plate is provided with scale lines to determine the moving distance of the pusher head.

[0013] The beneficial effects of this utility model are:

[0014] This utility model uses positioning components in four directions and jacks arranged on the three inner walls of the C-shaped plate. By operating the jacks to drive the push head to move, the steel coal hopper can be moved and finely adjusted in the horizontal plane. Combined with the scale lines on the top of the C-shaped plate, the operator can control the adjustment amount of each step, easily achieve positioning operation, higher positioning accuracy, less labor, reduced labor intensity, and reduced safety hazards. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a positioning device for installing steel coal hoppers in a thermal power plant, according to the present invention. Figure 1 .

[0016] Figure 2 This is a schematic diagram of the structure of a positioning device for installing steel coal hoppers in a thermal power plant, according to the present invention. Figure 2 .

[0017] Figure 3 This is a schematic diagram of the structure of a positioning device for installing steel coal hoppers in a thermal power plant, according to the present invention. Figure 3 .

[0018] Figure 4 This is a schematic diagram of the structure of a positioning device for installing steel coal hoppers in a thermal power plant, according to the present invention. Figure 4 .

[0019] 1. Steel coal hopper; 2. Support legs; 3. Positioning assembly; 4. Horizontal base; 5. Longitudinal base; 6. C-shaped plate; 7. Jack; 8. Push head; 9. Mounting hole; 10. Threaded rod; 11. Locking nut; 12. Reinforcing weld lug; 13. Scale line. Detailed Implementation

[0020] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly mentioned in this specification are defined relative to their structure and are relative concepts. Therefore, they may vary depending on their location and usage; thus, these or other directional terms should not be interpreted as restrictive terms.

[0021] The singular forms “a,” “the,” and “the” used in this specification are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes one or more of the associated listed items, any or all possible combinations thereof.

[0022] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0023] According to the appendix Figure 1 As shown: This utility model provides a steel coal hopper installation and positioning device for thermal power plants: including: a steel coal hopper 1, with a number of installation legs 2 on the upper part of the outer wall of the steel coal hopper 1, and a number of pre-embedded steel plates for welding to the installation legs 2 are provided around the top of the concrete installation seat of the steel coal hopper. This is the foundation for the final permanent fixation of the steel coal hopper. The function of this device is to accurately push the installation legs 2 to the predetermined welding position of the pre-embedded steel plates.

[0024] As per the instruction manual Figure 1-4 As shown: The positioning assembly 3, located on the outside of the steel coal hopper 1, is placed on the top of the concrete mounting base bevel of the steel coal hopper. It includes a pair of transverse bases 4 and a pair of detachable longitudinal bases 5 located between the inner walls of the transverse bases 4. C-shaped plates 6 are provided at the top center of both the transverse bases 4 and the top center of both the longitudinal bases 5. Jacks 7 are provided on the three inner side walls of the C-shaped plates 6. The telescopic ends of the jacks 7 are provided with push heads 8 located on the outside of the mounting legs 2. The top of the C-shaped plates 6 is provided with scale lines 13 for judging the movement distance of the push heads 8. Specifically, the scale lines 13 can be precise to the millimeter level. The scale allows operators to quantify the adjustment process and intuitively and accurately control the displacement of the steel coal hopper 1, thereby achieving high-precision positioning. The jack 7 can be a small, separate hydraulic jack or a heavy-duty screw jack, which has the advantages of controllable stroke and large output force. By operating the jack 7, the push head 8 can apply a precise and controllable thrust to the mounting leg 2. In a positioning assembly 3, the jack on the transverse base 4 is responsible for adjustment in one direction (such as the Y direction), while the jack on the longitudinal base 5 is responsible for adjustment in another vertical direction (such as the X direction).

[0025] As per the instruction manual Figure 1 , 2 As shown: The horizontal base 4 and the longitudinal base 5 both have symmetrical mounting holes 9 on their top sides, allowing them to be fixedly installed on the top of the concrete mounting base bevel using anchor bolts. This ensures the positioning device remains stable under heavy thrust and will not shift. It can be removed after use. The C-shaped plate 6 is fully welded and fixed to the top of the horizontal base 4 and the longitudinal base 5. The bottom of both sides of the C-shaped plate 6 has symmetrical reinforcing weld ears 12 that are fixedly connected to the top of the horizontal base 4 and the longitudinal base 5. The full welding and reinforcing weld ears 12 design greatly enhance the stability of the positioning device. The C-shaped plate 6 has structural rigidity and strength, ensuring that it will not deform when subjected to the huge reaction force of the jack 7, thus guaranteeing the positioning accuracy and durability of the device. Threaded rods 10 are symmetrically provided on both sides of the longitudinal base 5, and through holes for the threaded rods 10 to pass through are provided on the transverse base 4. Locking nuts 11 that fit against the outer side wall of the transverse base 4 are threaded onto the threaded rods 10, making the installation and disassembly of the longitudinal base 5 very convenient. Simply tighten or loosen the locking nuts 11. The combination forms a sturdy U-shaped frame, while ensuring the reusability of the device.

[0026] The principle of this utility model

[0027] Preparation: Before hoisting the steel coal hopper 1, measure and mark the theoretical center line and edge line of each installation leg 2 on the concrete mounting base according to the design drawings;

[0028] Install positioning device: Place the horizontal base 4 and the vertical base 5 of this utility model outside the marking line respectively, assemble the horizontal base 4 and the vertical base 5 into a U-shaped frame by threaded rod 10 and locking nut 11, and use anchor bolts to firmly fix it to the concrete foundation through the mounting hole 9, ensuring that all jacks 7 are in the fully retracted state.

[0029] Coal bucket rough positioning: Use a crane to slowly lift the coal bucket 1 and guide its cross-shaped installation legs 2 to fall smoothly into the space enclosed by the C-shaped plate 6. At this time, the crane can unload part of the load, but still maintain protective traction.

[0030] Positioning fine-tuning: At this time, the surveyor uses a total station or pulls a steel wire to measure the deviation between the actual position and the theoretical position of the currently installed support leg 2. According to the deviation value, the operator coordinates the operation of the corresponding jacks 7 on the four sets of positioning components 3. For example, if the steel coal hopper 1 needs to be moved 5mm in the positive X direction, the jacks 7 on all longitudinal bases 5 located in the negative X direction are operated to extend and push the installation support leg 2 to move. At the same time, the operator observes the scale line 13 on the C-shaped plate 6 to monitor the displacement, so that the entire steel coal hopper 1 will move smoothly. This process is repeated until the deviations in the X and Y directions are eliminated within the allowable error range (such as ±1mm).

[0031] Final fixation: After confirming that the position of the steel coal hopper 1 is accurate, ensure that the installation leg is completely placed on the pre-embedded steel plate on the concrete foundation, and then fully weld the bottom of the installation leg 2 to the pre-embedded steel plate to achieve permanent fixation;

[0032] Disassembly: After the welding has cooled and the strength has reached the required level, retract all the jacks 7, loosen the locking nuts 11, and remove the longitudinal base 5 and the transverse base 4 in sequence. The entire device can then be recycled for the next installation task.

[0033] In summary, this utility model, through the positioning components 3 in four directions and relying on the jacks 7 arranged on the three inner walls of the C-shaped plate 6, can drive the push head 8 to move by operating the jacks 7, and can achieve horizontal fine-tuning of the steel coal hopper 1. Combined with the scale line 13 on the top of the C-shaped plate 6, the operator can control the adjustment amount of each step, easily achieve positioning operation, higher positioning accuracy, less labor, reduced labor intensity, and reduced safety hazards, and solve the problems of low positioning accuracy and the laborious and dangerous manual prying with crowbars in traditional methods.

[0034] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A positioning device for installing steel coal hoppers in a thermal power plant, characterized in that, include: A steel coal hopper (1) has several mounting legs (2) on the upper part of its outer wall; The positioning component (3) set on the outside of the steel coal hopper (1) is placed on the top of the concrete mounting seat of the steel coal hopper. It includes a pair of transverse bases (4) and a pair of longitudinal bases (5) detachably set between the inner side walls of the transverse bases (4). C-shaped plates (6) are provided at the top middle of the transverse bases (4) and the top middle of the longitudinal bases (5). Jacks (7) are provided on the three inner side walls of the C-shaped plates (6). The telescopic end of the jacks (7) is provided with push heads (8) placed on the outside of the mounting legs (2).

2. The installation and positioning device for a steel coal hopper in a thermal power plant according to claim 1, characterized in that: The transverse base (4) and the longitudinal base (5) are symmetrically provided with mounting holes (9) on both sides of the top, so as to fix the transverse base (4) and the longitudinal base (5) to the top of the concrete mounting seat of the steel coal hopper by means of anchor bolts.

3. The installation and positioning device for a steel coal hopper in a thermal power plant according to claim 1, characterized in that: The top of the concrete mounting base of the coal hopper is provided with several embedded steel plates for welding with the mounting legs (2).

4. The installation and positioning device for a steel coal hopper in a thermal power plant according to claim 1, characterized in that: The longitudinal base (5) has threaded rods (10) symmetrically arranged on both sides of the longitudinal base (5). The transverse base (4) has through holes for the threaded rods (10) to pass through. The threaded rods (10) are threaded with locking nuts (11) that fit against the outer side wall of the transverse base (4).

5. The installation and positioning device for a steel coal hopper in a thermal power plant according to claim 1, characterized in that: The C-shaped plate (6) is fully welded and fixed on the top of the transverse base (4) and the longitudinal base (5). The bottom of the two side walls of the C-shaped plate (6) are symmetrically provided with reinforcing welding ears (12) that are fixedly connected to the top of the transverse base (4) and the longitudinal base (5).

6. The installation and positioning device for a steel coal hopper in a thermal power plant according to claim 1, characterized in that: The top of the C-shaped plate (6) is provided with a scale line (13) for judging the moving distance of the pusher (8).

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