An excavating type main transformer auxiliary unloading device
By using an excavation-type main transformer auxiliary unloading device, combined with a small truck crane and a low-lift vehicle, and utilizing hydraulic jacks and a slipper system, the main transformer was accurately hoisted and stably transported. This solved the difficulty of unloading and positioning the transformer in the absence of large lifting machinery, reduced transportation costs, and improved construction efficiency.
Patent Information
- Application Number
- CN202423093125.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-16
AI Technical Summary
In power construction, unloading and positioning the main transformer is difficult, especially in the absence of large lifting machinery, which increases additional economic costs and reduces construction efficiency.
An open-cut auxiliary unloading device for the main transformer is adopted, which uses a small truck crane and a low-lift vehicle in combination with four sets of hydraulic jacks and self-designed active and passive skids to achieve precise hoisting and stable transportation of the main transformer through earthwork trenches and gentle slope roadbeds, avoiding the use of large machinery.
It significantly reduces transportation costs, improves transportation flexibility, ensures safety and stability, avoids jamming or positional deviation caused by rigid connections, reduces safety hazards caused by excessive slope, and ensures the safety and efficiency of the unloading process.
Smart Images
Figure CN223599338U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power equipment unloading and positioning equipment, specifically an excavation-type auxiliary unloading device for main transformers. Background Technology
[0002] In power construction, main transformers are characterized by large capacity, large size, and difficulties in transportation, unloading, and placement.
[0003] In existing technologies, the unloading and placement of the main transformer is usually accomplished using large lifting machinery. However, in reality, there are situations where there is no large lifting machinery available at the project site. Therefore, in order to unload and place the main transformer, it is necessary to add extra scheduling and transportation of large lifting machinery, which will inevitably increase the investment of additional economic costs in actual operation, and sometimes even reduce construction efficiency. Utility Model Content
[0004] Based on this, the purpose of this utility model is to provide an excavation-type main transformer auxiliary unloading device to solve the technical problem that it is difficult to unload and position the main transformer when there is no large lifting machinery in the construction project.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an excavation-type main transformer auxiliary unloading device, including a main transformer, an earthwork trench capable of accommodating flatbed trucks is excavated on one side of the main transformer, a main transformer base and four sets of hydraulic jacks are installed at the bottom of the main transformer, active sliding shoes are installed at the four lower corners of the main transformer, and two sets of passive sliding shoes are installed below the active sliding shoes. The main transformer is in a sliding state through the active and passive sliding shoes, wherein a pushing jack is installed on the side of the two sets of active sliding shoes away from the earthwork trench.
[0006] By adopting the above technical solutions and using small truck cranes and low-lift trucks as material transport vehicles, transportation costs can be significantly reduced and transportation flexibility can be improved. Small truck cranes are convenient for precise lifting in narrow spaces, while low-lift trucks can stably carry the main transformer, ensuring safety during transportation.
[0007] Furthermore, the telescopic end of the pushing jack is rotatably connected to the active sliding shoe, and the other end is rotatably connected to a fixed frame on one side, which is used to provide the main variable position sliding power source.
[0008] By adopting the above technical solution, the telescopic end of the push jack is flexibly connected to the active sliding shoe through the rotating connector, so that when the push jack provides thrust, it can adaptively adjust according to the slight positional changes of the main transformer during the sliding process, effectively avoiding the jamming or positional displacement problems that may occur due to rigid connection.
[0009] Furthermore, the excavation slope angle of the earthwork trench is less than 15°, and a roadbed plate is laid on the inner side of the earthwork trench. The surface of the flatbed truck is set in the same plane as the main transformer.
[0010] By adopting the above technical solutions, it is ensured that transport vehicles can smoothly and safely drive into or dump into the earthwork trench, while effectively avoiding potential safety hazards caused by excessive slope.
[0011] Furthermore, the four sets of hydraulic jacks are arranged in a rectangular pattern, and the hydraulic jacks are model FQ100T-20b with a lifting capacity of 100t.
[0012] By adopting the above technical solution, this layout method can ensure that the main transformer is subjected to uniform force during the lifting process, effectively avoiding the risk of deformation or damage caused by excessive force at a single point.
[0013] Furthermore, the two sets of passive sliding shoes are arranged in parallel. Each passive sliding shoe includes a base plate, on which an I-shaped slide rail is provided. The slide rail is fastened to the base plate by pressure plates on both sides.
[0014] By adopting the above technical solution, two sets of passive sliding shoes are arranged in parallel at the bottom of the main transformer, ensuring the stability of the main transformer during the sliding process.
[0015] Furthermore, the active sliding shoe includes a first support plate and a second support plate. The first support plate and the second support plate are welded at right angles, and inclined support plates are welded to the inner side. Two sets of lower limit plates are fixed on the bottom surface of the first support plate, and the lower limit plates are engaged with the slide rail for sliding.
[0016] By adopting the above technical solution, the strength and stability of the skid are guaranteed, and it can also better adapt to the shape of the bottom of the main transformer.
[0017] Furthermore, molybdenum disulfide is applied to the top side of the slide rail and the bottom side of the active and passive slide shoes that slide relative to the slide rail.
[0018] By adopting the above technical solution, molybdenum disulfide lubricant has good lubrication and anti-wear properties. It can effectively reduce the frictional resistance between the slipper and the slide rail, thereby reducing energy consumption and wear during the sliding process.
[0019] In summary, the present invention has the following main advantages:
[0020] This utility model improves the traditional unloading method by using active and passive sliding shoes. In some projects and regions where large lifting machinery is unavailable, small truck cranes and low-profile vehicles are used as material transport vehicles. Four electric hydraulic jacks and two sets of self-designed active and passive sliding shoes are selected as the main tools for unloading and positioning the main transformer. By controlling the elevation of the earthwork excavation next to the main transformer, the elevation of the vehicle platform after the transport vehicle is positioned is made consistent with the elevation of the main transformer foundation. The main transformer can be unloaded horizontally by on-rail pushing device without laying timber, thus eliminating the need for large-scale unloading or unloading with timber stacks and avoiding the use and laying of a large amount of timber. Attached Figure Description
[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0022] Figure 2 This is a schematic diagram of the main structure of this utility model;
[0023] Figure 3 This is a schematic diagram of the assembly cross-sectional structure of the passive and active sliding shoes of this utility model;
[0024] Figure 4 This is a schematic diagram of the structure of the active ski boot of this utility model;
[0025] Figure 5 This is a schematic diagram of the earthwork trench of this utility model;
[0026] Figure 6 This is a schematic diagram showing the model and data of the hydraulic jack of this utility model.
[0027] In the diagram: 1. Main transformer; 2. Earthwork trench; 3. Passive sliding shoe; 301. Base plate; 302. Slide rail; 303. Pressure plate; 4. Active sliding shoe; 401. First support plate; 402. Second support plate; 403. Lower limit plate; 404. Inclined support plate; 5. Main transformer base; 6. Hydraulic jack; 7. Flatbed trolley; 8. Pushing jack. Detailed Implementation
[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", and "setting" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0031] The embodiments of this utility model will be described below based on its overall structure.
[0032] Example 1:
[0033] An excavation-type main transformer auxiliary unloading device, such as Figures 1-6 As shown, the system includes a main transformer 1. A trench 2, capable of accommodating a flatbed truck 7, is excavated on one side of the main transformer 1. A main transformer base 5 and four sets of hydraulic jacks 6 are installed at the bottom of the main transformer 1. Active sliding shoes 4 are installed at each of the four lower corners of the main transformer 1. Two sets of passive sliding shoes 3 are installed below each active sliding shoe 4. The main transformer 1 is in a sliding state via the active sliding shoes 4 and passive sliding shoes 3. Pushing jacks 8 are installed on the side of the two sets of active sliding shoes 4 furthest from the trench 2. Using a small truck crane and a low-profile vehicle as material transport vehicles significantly reduces transportation costs and improves transportation flexibility. The small truck crane facilitates precise lifting in narrow spaces, while the low-profile vehicle can stably support the main transformer, ensuring safety during transportation. Simultaneously, four electric hydraulic jacks 6 and two sets of independently designed active and passive sliding shoes 4 and 3 are selected as the main tools for unloading and positioning the main transformer. By precisely controlling the lifting and lowering of the jacks, the main transformer can be smoothly unloaded and accurately positioned.
[0034] See Figure 1 , Figure 2The telescopic end of the push jack 8 is rotatably connected to the active sliding shoe 4, and the other end is rotatably connected to a fixed frame on one side. It is used to provide the sliding force source for the main transformer 1. The telescopic end of the push jack 8 is flexibly connected to the active sliding shoe 4 through a rotating connector, so that when the push jack 8 provides thrust, it can adaptively adjust according to the slight position changes of the main transformer 1 during the sliding process, effectively avoiding the jamming or position displacement problems that may occur due to rigid connection. At the same time, the other end of the push jack 8 is also connected to the fixed frame on one side through a rotating connector. This double rotating connection not only significantly enhances the stability of the entire sliding system, but also ensures that the thrust can be transmitted to the main transformer 1 evenly and efficiently.
[0035] See Figure 1 , Figure 2 , Figure 5 The excavation slope angle of earthwork trench 2 is less than 15°, and a roadbed plate is laid on the inner side of earthwork trench 2. The surface of the flatbed truck 7 is set at the same plane as the main transformer 1. This not only ensures that transport vehicles can drive into or dump into earthwork trench 2 smoothly and safely, but also effectively avoids safety hazards that may be caused by excessive slope. At the same time, the roadbed plate laid on the inner side of earthwork trench 2 not only significantly improves the load-bearing capacity of the ground, but also ensures that the surface of the flatbed truck 7 is at the same level as the bottom of the main transformer 1, providing a flat and stable foundation for subsequent sliding operations.
[0036] See Figure 1 , Figure 2 , Figure 3 , Figure 6 The four sets of hydraulic jacks 6 are arranged in a rectangular pattern. The hydraulic jacks 6 are model FQ100T-20b with a lifting capacity of 100t. This layout ensures that the main transformer 1 is subjected to uniform force during the lifting process, effectively avoiding the risk of deformation or damage caused by excessive force at a single point. At the same time, the selection of hydraulic jacks 6 model FQ100T-20b with a lifting capacity of up to 100t not only fully meets the lifting force requirements of unloading the main transformer 1, but also ensures the stability and reliability of the entire operation process. This significantly improves the unloading efficiency and greatly reduces the safety risks that may be caused by equipment failure.
[0037] See Figure 1 , Figure 2 , Figure 3Two sets of passive sliding shoes 3 are arranged in parallel. The passive sliding shoe 3 includes a base plate 301, on which an I-shaped slide rail 302 is provided. The slide rail 302 is fastened to the base plate 301 by pressure plates 303 on both sides. The two sets of passive sliding shoes 3 are arranged in parallel at the bottom of the main transformer 1 to ensure the stability of the main transformer 1 during the sliding process. At the same time, the passive sliding shoe 3 is composed of a base plate 301 and an I-shaped slide rail 302. The slide rail 302 is fastened to the base plate 301 by pressure plates 303 on both sides. This structure not only significantly enhances the load-bearing capacity of the sliding shoe, but also ensures the stability of the slide rail 302.
[0038] See Figure 3 , Figure 4 The active sliding shoe 4 includes a first support plate 401 and a second support plate 402. The first support plate 401 and the second support plate 402 are welded at right angles, and inclined support plates 404 are welded to the inner side. Two sets of lower limit plates 403 are fixed on the bottom surface of the first support plate 401. The lower limit plates 403 are engaged with the slide rail 302 and slide, which not only ensures the strength and stability of the sliding shoe, but also allows it to better adapt to the shape of the bottom of the main transformer 1. At the same time, the two sets of lower limit plates 403 are fixed on the bottom surface of the first support plate 401 and engage with the slide rail 302 to slide. This sliding method not only ensures the stable sliding of the sliding shoe 4 on the slide rail 302, but also effectively avoids safety accidents caused by slippage.
[0039] Example 2:
[0040] See Figure 1 , Figure 2 , Figure 3 , Figure 4 Molybdenum disulfide is applied to the top side of the slide rail 302 and the bottom side of the active and passive slide shoes 4 that slide relative to the slide rail 302. Molybdenum disulfide lubricant has good lubrication and anti-wear properties. It can effectively reduce the frictional resistance between the slide shoes and the slide rail 302, thereby reducing energy consumption and wear during the sliding process. At the same time, molybdenum disulfide can also form a protective film, effectively preventing wear and corrosion of the slide shoes and slide rail 302 caused by long-term friction. This lubrication measure not only significantly improves the efficiency and smoothness of sliding, but also greatly extends the service life of the slide shoes and slide rail 302, thereby reducing the maintenance cost of the equipment.
[0041] The implementation principle of this utility model is as follows:
[0042] 1. Determine the location and elevation of the main transformer 1 foundation. Excavate an earthwork trench 2 near the location of the main transformer 1 foundation, which can be driven into or reversed into by transport vehicles. After the transport vehicles have fully driven into or reversed into the foundation, the elevation of the vehicle platform of the transport vehicles should be equal to the elevation of the main transformer 1 foundation. Operate the transport vehicles carrying the main transformer until the transport vehicles reach the preset position.
[0043] 2. Install four electric hydraulic jacks 6 on the bottom side of the main transformer 1, and operate the four electric hydraulic jacks 6 until the main transformer 1 rises to the preset height;
[0044] 3. Install two sets of passive sliding shoes 3 on the side of the main transformer 1 away from the main transformer base 5, and install the two sets of passive sliding shoes 3 in parallel. Then install four sets of active sliding shoes 4 above the two sets of passive sliding shoes 3, and the active sliding shoes 4 should be installed and supported at the four lower corners of the main transformer 1.
[0045] 4. Then, control the hydraulic jack 6 to retract, causing the active sliding shoe 4 to come into contact with the passive sliding shoe 3. Subsequently, use the push jack 8 to push the main transformer 1. At this time, the main transformer 1 can slide laterally through the active sliding shoe 4 and the passive sliding shoe 3 until it slides above the flatbed trolley 7.
[0046] 5. Install four electric hydraulic jacks 6 on the bottom side of the main transformer 1. Operate the four electric hydraulic jacks 6 to lift the main transformer. After the main transformer 1 rises to the preset height, remove the active slipper 4 and the passive slipper 3. Operate the four electric hydraulic jacks until the main transformer is lowered onto the flatbed trolley 7 to complete the loading operation of the main transformer 1.
[0047] All parts not covered in this utility model are the same as or can be implemented using existing technologies, and will not be described in detail here.
[0048] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.
Claims
1. A main transformer auxiliary unloading device of excavation type, characterized in that: Including main transformer (1), one side of main transformer (1) is excavated with earthwork groove (2) that can contain board car (7) access, the bottom of main transformer (1) is installed with main transformer base (5) and four groups of hydraulic jack (6), the lower four corners of main transformer (1) are installed with driving slide shoe (4), the lower driving slide shoe (4) is installed with two groups of passive slide shoe (3) corresponding to it, main transformer (1) is slidably through driving slide shoe (4), passive slide shoe (3), wherein the side of two groups of driving slide shoe (4) away from earthwork groove (2) is installed with push jack (8).
2. The excavating main transformer auxiliary unloading device according to claim 1, characterized in that: The telescopic end of the push jack (8) is rotatably connected with the driving slide shoe (4), and the other end is rotatably connected with a side fixed frame, for providing a position sliding power source for the main transformer (1).
3. The excavated main transformer auxiliary unloading device according to claim 1, characterized in that: The excavation of the earthwork groove (2) is less than 15°, and a roadbed plate is laid on the inside of the earthwork groove (2), and the surface of the board car (7) is arranged in the same plane with the main transformer (1).
4. The excavated main transformer auxiliary unloading device according to claim 1, characterized in that: The four groups of hydraulic jacks (6) are arranged in a rectangular shape, and the model of the hydraulic jack (6) is FQ100T-20b, and the lifting capacity is 100t.
5. The excavated main transformer auxiliary unloading device according to claim 1, characterized in that: The two groups of passive slide shoes (3) are arranged in parallel, the passive slide shoe (3) includes a bottom plate (301), the bottom plate (301) is provided with an I-shaped slide rail (302), and the slide rail (302) is tightly installed with the bottom plate (301) through two side pressing plates (303).
6. The excavated main transformer auxiliary unloading device according to claim 1, characterized in that: The driving slide shoe (4) includes a first support plate (401) and a second support plate (402), the first support plate (401) and the second support plate (402) are in a right angle welding structure, and an inner side support is welded with an inclined support plate (404), the bottom surface of the first support plate (401) is fixed with two groups of lower limit plates (403), and the lower limit plate (403) is connected with the slide rail (302) for sliding.
7. The excavated main transformer auxiliary unloading device according to claim 5, characterized in that: The top side of the slide rail (302) and the bottom side of the driving slide shoe (4) and the passive slide shoe (3) opposite to the slide rail (302) are coated with molybdenum disulfide.