Automatic protection device for transformer part transportation and control method thereof

Abstract

The invention relates to an automatic protection device for transformer part transportation and a control method thereof.The automatic protection device comprises an electric hydraulic rod, an upper plate, a lower plate, a fixing plate, a lifting plate, a reinforcing plate, an impact recorder, a PLC system and a pressure sensor, the electric hydraulic rod is fixed to the lower end of the reinforcing plate, and the upper plate and the lower plate are placed at the upper end and the lower end of a transportation part correspondingly; the fixing plate is arranged on the periphery between the upper plate and the lower plate, the lifting plate is arranged at the upper end of the reinforcing plate, the reinforcing plate is arranged at the lower end of the lower plate, the upper plate, the lower plate, the fixing plate and the reinforcing plate are connected into a whole through bolts, the impact recorder is arranged at the upper end of the upper plate, the PLC system is installed at one end of the reinforcing plate, and the pressure sensor is installed in a gap between a transportation component and the fixing plate. During transportation, the pressure sensor monitors the stress condition in real time and feeds back the stress condition to the PLC system, the PLC system controls the electric hydraulic rod to ascend and descend, it is ensured that the impact force borne by the transportation component during transportation under all the road conditions is not larger than a set value, and therefore it is ensured that the transportation component is intact.

Description

Technical Field

[0001] The invention belongs to the technical field of transformer design and manufacturing, and particularly relates to an automatic protection device for transformer component transportation and a control method thereof. Background Art

[0002] As the "heart" of the power transmission and transformation system, the transformer plays an important role in regulating voltage, transmitting electric energy, and protecting equipment in the power system. As a large-scale power equipment, some parts of the transformer are easily damaged during production and transportation, such as the magnetic shunt silicon steel sheets in the transformer body, various specifications of bushings, core silicon steel sheets, current transformers, instruments, etc. Among them, the magnetic shunt of the transformer is the most susceptible to serious damage due to road conditions during transportation. The magnetic shunt is assembled at the upper and lower ends of the insulation of the body to absorb leakage flux and prevent local overheating. The core part of the magnetic shunt is composed of several stacked silicon steel sheets. After the stacking is completed, one of the edges is first polished and then welded to ensure that all the stacked silicon steel sheets are welded together, that is, the welds of the stacked silicon steel sheets are generated. However, during short-distance transportation within the production plant or long-distance transportation outside the factory, the magnetic shunt is prone to stacked silicon steel sheet welds. If there is a large vibration or impact, it may cause local deformation and cracking. When the transformer product is connected to the network, it may cause major safety hazards to the stable operation of the transformer network. The magnetic shunts that are severely deformed during transportation need to be re-processed on site, which not only delays the on-site installation period of the transformer products, but also greatly increases the production cost of the transformer.

[0003] In order to eliminate the transportation safety of the above-mentioned components, the existing technology usually adopts two methods: 1. The magnetic shunt is manufactured and assembled near the transformer product to be assembled to ensure that the welds of the magnetic shunt are intact, thereby ensuring the overall quality and performance of the transformer product. 2. A bracket tooling is used to transport the magnetic shunt. After the magnetic shunt is fixed as a whole, a damping shock absorber is installed at the lower end of the reinforcing plate of the bracket tooling to avoid the magnetic shunt and other fragile precision parts from cracking, deformation or damage caused by large vibrations or impact forces during short-distance transportation within the production plant or long-distance transportation outside the factory. The disadvantage is that the impact displacement caused by acceleration and deceleration in the front and rear directions cannot be monitored and adjusted in real time, and there is also the problem of fasteners being easily loosened during transportation. Summary of the invention

[0004] In order to avoid damage and cracking of important vulnerable precision components such as magnetic shunts during transportation, systematic and timely automatic protection of vulnerable precision components such as magnetic shunts, various specifications of bushings, stacked silicon steel sheets, current transformers, etc. is achieved, and the vertical bumps and acceleration and deceleration in the front and back directions during transportation are monitored in real time and quickly adjusted and reset. An automatic protection device for transformer component transportation and a control method thereof are provided. The transported components are protected in real time during transportation, and a bolt fastening structure is set to ensure that the fasteners are not loose during the entire transportation process, thereby effectively improving the transportation safety of important vulnerable precision components of the transformer.

[0005] The present invention is achieved through the following technical solutions: The invention provides an automatic protection device for transformer component transportation and a control method thereof, comprising an electric hydraulic rod, an upper plate, a lower plate, a fixed plate, a lifting plate, a reinforcing plate, an impact recorder, a PLC system and a pressure sensor, wherein the electric hydraulic rod is fixed at the lower end of the reinforcing plate, the upper plate and the lower plate are respectively placed at the upper end and the lower end of the transportation component, the fixed plate is arranged around the upper plate and the lower plate, the reinforcing plate is arranged at the lower end of the lower plate, the lifting plate is welded to the upper end of the reinforcing plate, the upper plate, the lower plate, the fixed plate and the reinforcing plate are connected as a whole by bolts, the impact recorder is arranged on the upper plate, the PLC system is installed at one end of the reinforcing plate, the pressure sensor is installed in the gap between the transportation component and the fixed plate, the transportation component is fixed around the upper plate, the lower plate and the fixed plate, the pressure sensor monitors the stress condition in real time during transportation and feeds back to the PLC system, the PLC system controls the lifting and lowering of the electric hydraulic rod to ensure that the impact force received by the transportation component during transportation under various road conditions is not greater than a set value.

[0006] Furthermore, it also includes an automatic bolt tightening structure, which includes a movable slider, a connecting rod, a rotating motor and a fixed block. The movable slider is movably connected to the connecting rod, the rotating motor is nested in the upper end of the movable slider, the upper end of the fixed block is fixed to the rotating motor, and the lower end of the fixed block is welded to the upper surface of the upper plate.

[0007] Furthermore, the movable slider includes a left movable slider and a right movable slider, a through hole is provided in the middle of the left movable slider, and a sliding groove I is provided in the middle of the right movable slider.

[0008] Furthermore, a sliding groove II is provided on the upper end surfaces of the left movable sliding block and the right movable sliding block.

[0009] Furthermore, the connecting rod specifically includes 1 left screw, 1 right screw, 4 nuts and 2 limit plates, the 2 limit plates are arranged in parallel at both ends of the left screw and the right screw, and the limit plates are fixed by screwing the nuts into both ends of the left screw and the right screw respectively.

[0010] Further, the number of the electric hydraulic rods is an even number greater than or equal to four.

[0011] Furthermore, a base is welded at the center of the upper surface of the upper plate, and the impact recorder is bolted to the base.

[0012] Furthermore, the gap between the transport component and the fixing plate is of equal size everywhere so as to place the pressure sensor.

[0013] Furthermore, the reinforcing plate is provided with fixing holes for fixing to the transport vehicle, a side plate is welded to one end of the reinforcing plate, and the PLC system is bolted to the side plate.

[0014] Furthermore, during the transportation process, if the pressure sensor is squeezed and deformed, it will send a sensing signal to the PLC system, and the PLC system will send a sensing command to the electric hydraulic rod. After receiving the sensing command, the electric hydraulic rod will adjust the lifting and lowering of the electric hydraulic rod in time, thereby realizing real-time adjustment of the force of the transportation parts during transportation.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: An automatic protection device for transformer component transportation and a control method thereof include an electric hydraulic rod, an upper plate, a lower plate, a fixing plate, a lifting plate, a reinforcing plate, an impact recorder, a PLC system and a pressure sensor, wherein the electric hydraulic rod is fixed to the lower end of the reinforcing plate, the upper plate and the lower plate are respectively placed on the upper end and the lower end of the transport component, the fixing plate is arranged around the upper plate and the lower plate, the transport component is fixed around the upper plate, the lower plate and the fixing plate, the reinforcing plate is arranged at the lower end of the lower plate, the reinforcing plate and the fixing plate form a transport component placement area, the lifting plate is welded to the upper end of the reinforcing plate, and the upper plate, the lower plate and the fixing plate are bolted together. It is connected to the reinforcement plate as a whole, the impact recorder is set on the upper surface of the upper plate, the PLC system is installed at one end of the reinforcement plate, and the pressure sensor is installed in the gap between the transport component and the fixed plate. The size of the gap is matched with the placement of the pressure sensor. During transportation, the pressure sensors of different road conditions sense and monitor the stress conditions of the transport components in real time, and feed back to the PLC system. The PLC system sends a signal to adjust the lifting and lowering of the electric hydraulic rod to ensure that the impact force received by the transport components during transportation under various road conditions is not greater than the set value, thereby ensuring that the transport components are intact and achieving the purpose of automatically protecting the transport components.

[0016] Furthermore, it also includes an automatic bolt tightening structure, which includes a movable slider, a connecting rod, a rotating motor and a fixed block. The movable slider is movably connected to the connecting rod, the rotating motor is nested in the upper end of the movable slider, the upper end of the fixed block is fixed to the rotating motor, and the lower end of the fixed block is welded to the upper surface of the upper plate. The movable slider includes a left movable slider and a right movable slider. A through hole is provided in the middle of the left movable slider, a sliding groove I is provided in the middle position of the right movable slider, and sliding grooves II are provided on the upper end faces of the left movable slider and the right movable slider. Each group of connecting rods includes a left screw, a right screw, 4 nuts and 2 limit plates. The 2 limit plates are arranged in parallel at both ends of the left screw and the right screw, and the limit plates are respectively screwed into the left screw and the right screw by nuts for fixing. The automatic bolt tightening structure is installed to keep the set torque of the connecting rod unchanged, limit the loosening of the connecting rod in real time, and ensure that the connecting rod is in a tightened state in real time during transportation. The structural design is ingenious.

[0017] Furthermore, the number of the electric hydraulic rods is an even number greater than or equal to 4, so as to ensure the stability of the horizontal placement of the transport component.

[0018] Furthermore, the gap between the transport component and the fixing plate is of equal size everywhere so as to place the pressure sensor.

[0019] Furthermore, the reinforcing plate is provided with fixing holes for fixing the transport vehicle and the device.

[0020] Furthermore, a side plate is welded to one end of the reinforcing plate, so that the PLC system can be fixed to the side plate with bolts, which is stable and reliable.

[0021] Furthermore, a base is welded at the center of the upper surface of the upper plate, and the impact recorder is bolted to the base to ensure that the impact recorder avoids displacement or rollover under any road conditions when subjected to front and rear impact forces and up and down bumps.

[0022] Furthermore, during transportation, if the pressure sensor is squeezed and deformed, it sends a sensing signal to the PLC system, and the PLC system sends a sensing command to the electric hydraulic rod. After receiving the sensing command, the electric hydraulic rod promptly adjusts the lifting and lowering of the electric hydraulic rod, so as to realize real-time adjustment of the force of the transport parts during transportation, and ensure the stability of the center of gravity of the transport parts. The transportation safety of the transport parts is guaranteed by the automatic protection device combined with the transportation control method. The device is safe and reliable, greatly saves manufacturing costs and labor costs, and improves product production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 An assembly diagram of the automatic protection device for transformer component transportation of the present invention; Figure 2 A diagram showing the automatic bolt tightening structure of the automatic protection device for transformer component transportation of the present invention; Figure 3 The PLC control system device before compression of the pressure sensor No. 11 of the present invention; Figure 4 This is a diagram of a PLC control system device after compression of the pressure sensor No. 11 of the present invention; Figure 5 This is a front view of the movable slider No. 13 of the present invention; Figure 6 A top view of the movable slider No. 13 of the present invention; Figure 7 It is a schematic diagram of assembling the movable slider No. 13 and the rotating motor No. 15 of the present invention; Figure 8 This is a front view of the connecting rod No. 14 of the present invention; Fig. 9 A top view of the connecting rod No. 14 of the present invention; Fig.10 It is a schematic diagram of the rotating electrical machine No. 15 of the present invention; Fig.11 It is a schematic diagram of welding the fixing block No. 16 and the upper plate No. 2 of the present invention.

[0024] Among them, 1 is an electric hydraulic rod, 2 is an upper plate, 3 is a transport component placement area, 4 is a lower plate, 5 is a fixed plate, 6 is a bolt, 7 is a lifting plate, 8 is a reinforcing plate, 9 is an impact recorder, 10 is a PLC system, 11 is a pressure sensor, 12 is a fixing hole, 13 is a movable slider, 14 is a connecting rod, 15 is a rotating motor, 16 is a fixing block, 17 is a nut, 18 is a base, 19 is a threaded hole, 20 is a through hole, 21 is a sliding groove I, 22 is a sliding groove II, 23 is a rotating motor rotor, 24 is a left screw, 25 is a right screw, 26 is a side plate, 27 is a limit plate, 28 is a left movable slider, 29 is a right movable slider, 30 is a threaded through hole, and 31 is a welding position. DETAILED DESCRIPTION

[0025] The following is combined with Figures 1 to 11 The invention is described in further detail: An automatic protection device for transformer component transportation and a control method thereof include an electric hydraulic rod 1, an upper plate 2, a lower plate 4, a fixed plate 5, a lifting plate 7, a reinforcing plate 8, an impact recorder 9, a PLC system 10 and a pressure sensor 11, wherein the electric hydraulic rod 1 is fixed to the lower end of the reinforcing plate 8, the upper plate 2 and the lower plate 4 are respectively placed on the upper end and the lower end of the transport component, the fixed plate 5 is placed around the upper plate 2 and the lower plate 4, the reinforcing plate 8 is arranged at the lower end of the lower plate 4, the lifting plate 7 is welded to the upper end of the reinforcing plate 8, the upper plate 2, the lower plate 4, The fixed plate 5 and the reinforcing plate 8 are connected as a whole by bolts 6, the impact recorder 9 is set on the upper plate 2, the PLC system 10 is installed at one end of the reinforcing plate 8, and the pressure sensor 11 is installed in the gap between the transport component and the fixed plate 5. The transport component is fixed on all sides by the upper plate 2, the lower plate 4 and the fixed plate 5. During transportation, the pressure sensor 11 monitors the force condition in real time and feeds back to the PLC system 10. The PLC system 10 controls the lifting and lowering of the electric hydraulic rod 1 to ensure that the impact force received by the transport component during transportation under various road conditions is not greater than the set value.

[0026] Preferably, the device also includes an automatic bolt tightening structure, which includes a movable slider 13, a connecting rod 14, a rotating motor 15 and a fixed block 16, the movable slider 13 is movably connected to the connecting rod 14, the rotating motor 15 is nested in the upper end of the movable slider 13, the upper end of the fixed block 16 is fixed to the rotating motor 15, and the lower end of the fixed block 16 is welded to the upper surface of the upper plate 2.

[0027] Specifically, the movable slider 13 includes a left movable slider 28 and a right movable slider 29 . A through hole 20 is provided in the middle of the left movable slider 28 , and a sliding groove 121 is provided in the middle of the right movable slider 29 .

[0028] Specifically, the upper end surfaces of the left movable sliding block 28 and the right movable sliding block 29 are provided with sliding grooves II22 .

[0029] More preferably, the connecting rod 14 specifically includes a left screw rod 24, a right screw rod 25, four nuts 17 and two limit plates 27. The two limit plates 27 are arranged in parallel at both ends of the left screw rod 24 and the right screw rod 25. The limit plates 27 are respectively screwed into both ends of the left screw rod 24 and the right screw rod 25 through the nuts 17 for fixing.

[0030] More preferably, the number of the electric hydraulic rods 1 is an even number greater than or equal to four.

[0031] More preferably, a base 18 is welded at the center of the upper surface of the upper plate 2 , and the impact recorder 9 is bolted to the base 18 .

[0032] Specifically, the gap between the transport component and the fixing plate 5 is equal in size everywhere so as to place the pressure sensor 11 .

[0033] Specifically, the reinforcing plate 8 is provided with a fixing hole 12 for fixing to the transport vehicle, a side plate 26 is welded to one end of the reinforcing plate 8 , and the PLC system 10 is bolted to the side plate 26 .

[0034] Specifically, during transportation, if the pressure sensor 11 is squeezed and deformed, it sends a sensing signal to the PLC system 10, and the PLC system 10 sends a sensing command to the electric hydraulic rod 1. After receiving the sensing command, the electric hydraulic rod 1 adjusts the lifting and lowering of the electric hydraulic rod 1 in time, thereby realizing real-time adjustment of the force of the transportation components during transportation to ensure that its center of gravity is stable.

[0035] As attached Figures 1 to 4 As shown, before transportation, the transport component is stably lifted onto the lower plate 2, and after the fixing plate 5, the upper plate 4 and the connecting bolts 6 are installed around it, the transport component is placed in the transport component placement area 3, ensuring that the transport component and the automatic protection device are connected as a whole. Several pressure sensors 11 are installed in the gap between the transport component and the fixing plate 5, and there is signal induction between the pressure sensor 11 and the PLC system 10. The lower end of the reinforcing plate 8 is connected to the electric hydraulic rod 1 to stabilize the center of gravity of the transport component.

[0036] As attached Figures 5 to 11 As shown, in order to further ensure the overall stability of the automatic protection device, an automatic bolt tightening structure is installed at the bolt 6, and the automatic bolt tightening structure includes a movable slider 13, a connecting rod 14, a rotating motor 15 and a fixed block 16. The movable slider 13 is movably connected to the connecting rod 14, the rotating motor 15 is nested in the upper end of the movable slider 13, the upper end of the fixed block 16 is fixed to the rotating motor 15, and the lower end of the fixed block 16 is welded to the upper surface of the upper plate 2.

[0037] The movable slider 13 includes a left movable slider 28 and a right movable slider 29. A through hole 20 is set in the middle of the left movable slider for fixing with the left end of the connecting rod 14. A sliding groove I21 is set in the middle position of the right movable slider for cooperating with the screw at the right end of the connecting rod 14. The target bolt can be tightened and loosened by adjusting the left and right positions of the screw at the right end of the connecting rod in the sliding groove. Sliding grooves II22 are set on the upper end surfaces of the left movable slider 28 and the right movable slider 29, which are used to limit the rotor of the rotating motor 15 and transmit the rotational torque of the motor to the movable slider.

[0038] The function of the connecting rod 14 is to fix the left movable slider 28 and the right movable slider 29, so as to realize the tightening and loosening of the bolts of the movable slider 13. The connecting rod 14 is composed of a left screw rod 24, a right screw rod 25, a nut 17 and a limit plate 27 placed in front and back. The left screw rod 24 passes through the through hole 20 in the middle of the left movable slider 28, and the right screw rod 25 moves and adjusts the position of the sliding groove 121 of the right movable slider 29, so as to realize the adjustment and limit of the distance between the left movable slider 28 and the right movable slider 29.

[0039] The function of the rotating motor 15 is to provide the movable slider 13 with rotational kinetic energy. Fig.10 As shown, a threaded hole 19 is provided at the upper end for interconnection with the outer end fixing block 16, and both ends of the rotating motor rotor 23 at the lower end are clamped in the sliding groove II at the upper end of the movable slider 13, so as to transmit the rotational kinetic energy and realize the free adjustment of the distance between the left movable slider 28 and the right movable slider 29.

[0040] The upper end of the fixing block 16 is used to fix the rotating motor 15, and the lower end of the fixing block 16 is welded to the upper plate 2. The welding position is as follows: Fig.11 The upper end thereof is provided with a threaded through hole 30 according to the position of the threaded hole 19 of the rotating motor 15, and the fixing block 16 is connected to the rotating motor 15 by bolts.

[0041] The principle of the automatic bolt tightening structure is as follows: the rotating motor 15 is installed on the upper end of each fixed block 16 and fixed with bolts, and the rotating motor rotor 23 is clamped into the sliding groove II22 of the movable slider 13; after the bolt 6 is installed, the left and right positions of the movable slider 13 are adjusted to ensure that the movable slider 13 clamps the bolt 6 and then tightens the left screw 24 and the right screw 25 of the connecting rod 14, and the installation of the left screw 24 and the right screw 25 fastening device is completed. Before the transportation of the components, the speed and torque of the rotating motor 15 are set to the predetermined values, the rotating motor 15 is started, and the rotating motor rotor 23 provides rotational kinetic energy to the sliding groove II22. When the sliding groove II22 drives the movable slider 13 to provide rotational kinetic energy to the lower end, the bolt 6 is tightened, and the movable slider 13 is used to limit the bolt 6, and the connecting rod 14 is tightened. After the torque of the rotating motor 15 is set to the predetermined value, the rotating motor 15 is started, and the rotating motor 15 drives the movable slider 13 to continuously provide the torque force of the bolt 6 to keep it in a tightened state. After the transportation is completed, the rotating motor 15 is turned off and the automatic bolt fastening structure is removed in sequence, and the fixing block 16 is retained. The transportation task of the automatic bolt fastening structure is completed.

[0042] Before transporting the components, an impact recorder 9 is fixed on the upper surface of the upper plate 2 to monitor the vibration and impact of the components in real time. If a pressure collision of the set value or above occurs, an alarm is given in real time to ensure the safety and stability of the transported components. The automatic protection device is hoisted as a whole at the lifting plate 7 and placed stably on the transport vehicle. The bracket is securely fixed to the transport vehicle through the fixing hole 12 using a steel wire rope combined with a chain pull.

[0043] During transportation, if the vehicle encounters a downhill or deceleration section, the pressure on the front-end pressure sensor 11 of the automatic protection device increases. When it increases to a certain threshold, it sends a signal to the PLC system 10. The PLC system 10 issues an instruction to adjust the corresponding electric hydraulic rod 1 at the lower end of the pressure sensor 11 to lift until the signal feedback from the pressure sensor 11 is lower than the set value; when the vehicle completes the downhill run or gradually turns to uniform motion, the pressure on the pressure sensor 11 gradually decreases. When it is lower than a certain threshold, the PLC system 10 sends a descending instruction to the electric hydraulic rod 1 at the lower end of the corresponding pressure sensor 11. The electric hydraulic rod 1 descends to the initial position to complete the adjustment of the center of gravity of the transport component when going downhill or decelerating.

[0044] When the vehicle goes uphill or accelerates during transportation, the pressure of the pressure sensor 11 at the rear end of the automatic protection device increases. When it reaches a certain threshold, the PLC system 10 sends an ascending command to the electric hydraulic rod 1 at the lower end of the corresponding pressure sensor 11. The electric hydraulic rod 1 is lifted to move the center of gravity of the transport component forward to ensure that the pressure on the pressure sensor is not greater than the set value; when the vehicle completes the uphill or accelerated movement, the pressure on the pressure sensor 11 gradually decreases. When it decreases to a certain threshold, the PLC system 10 sends a descending command to the electric hydraulic rod 1 at the lower end of the corresponding pressure sensor 11. The electric hydraulic rod 1 descends to the initial position to complete the adjustment of the center of gravity of the transport component during the uphill or accelerated movement.

[0045] Similarly, when the vehicle encounters complex road conditions such as left or right turns, uneven roads, etc. during transportation, the automatic protection device can quickly adjust the height of the electric hydraulic rod 1 according to the feedback of the pressure sensor 11 and the instructions sent by the PLC system 10, so as to achieve real-time and all-round protection of the components during transportation.

Claims

1. An automatic protection device for transformer component transportation, characterized in that: The invention comprises an electric hydraulic rod (1), an upper plate (2), a lower plate (4), a fixing plate (5), a lifting plate (7), a reinforcing plate (8), an impact recorder (9), a PLC system (10) and a pressure sensor (11), wherein the electric hydraulic rod (1) is fixed to the lower end of the reinforcing plate (8), the upper plate (2) and the lower plate (4) are respectively placed at the upper end and the lower end of the transport component, the fixing plate (5) is arranged around the upper plate (2) and the lower plate (4), the reinforcing plate (8) is arranged at the lower end of the lower plate (4), the lifting plate (7) is welded to the upper end of the reinforcing plate (8), and the upper plate (2), the lower plate (4), the fixing plate (5) and the lifting plate (7) are welded to the upper end of the reinforcing plate (8). ) and the reinforcing plate (8) are connected as a whole by bolts (6), an impact recorder (9) is arranged at the upper end of the upper plate (2), a PLC system (10) is installed at one end of the reinforcing plate (8), a pressure sensor (11) is installed in the gap between the transport component and the fixing plate (5), and the transport component is fixed on all sides by the upper plate (2), the lower plate (4) and the fixing plate (5). During transportation, the pressure sensor (11) monitors the force condition in real time and feeds back to the PLC system (10), and the PLC system (10) controls the lifting and lowering of the electric hydraulic rod (1) to ensure that the impact force received by the transport component during transportation under various road conditions is not greater than the set value.

2. The automatic protection device for transformer component transportation according to claim 1, characterized in that: The invention also comprises an automatic bolt tightening structure, which comprises a movable slider (13), a connecting rod (14), a rotating motor (15) and a fixed block (16), wherein the movable slider (13) is movably connected to the connecting rod (14), the rotating motor (15) is nested in the upper end of the movable slider (13), the upper end of the fixed block (16) is fixed to the rotating motor (15), and the lower end of the fixed block (16) is welded to the upper surface of the upper plate (2). The automatic bolt tightening device is installed to ensure that the connecting rod (14) is in a tightened state in real time during transportation, to limit the loosening of the connecting rod (14) in real time, and to keep the set torque of the connecting rod (14) unchanged.

3. The automatic protection device for transformer component transportation according to claim 2, characterized in that: The movable slider (13) comprises a left movable slider (28) and a right movable slider (29); a through hole (20) is provided in the middle of the left movable slider (28), and a sliding groove I (21) is provided in the middle of the right movable slider (29).

4. The automatic protection device for transformer component transportation according to claim 3, characterized in that: The upper end surfaces of the left movable sliding block (28) and the right movable sliding block (29) are provided with sliding grooves II (22).

5. The automatic protection device for transformer component transportation according to claim 2, characterized in that: The connecting rod (14) specifically comprises a left screw rod (24), a right screw rod (25), four nuts (17) and two limit plates (27). The two limit plates (27) are arranged in parallel at both ends of the left screw rod (24) and the right screw rod (25). The limit plates (27) are respectively screwed into both ends of the left screw rod (24) and the right screw rod (25) through the nuts (17) to be fixed.

6. The automatic protection device for transformer component transportation according to claim 1, characterized in that: The number of the electric hydraulic rods (1) is an even number greater than or equal to 4.

7. The automatic protection device for transformer component transportation according to claim 1, characterized in that: A base (18) is welded at the center of the upper surface of the upper plate (2), and the impact recorder (9) is bolted to the base (18).

8. The automatic protection device for transformer component transportation according to claim 1, characterized in that: The gap between the transport component and the fixing plate (5) is of equal size everywhere so as to place the pressure sensor (11).

9. The automatic protection device for transformer component transportation according to claim 1, characterized in that: The reinforcing plate (8) is provided with a fixing hole (12) for fixing to the transport vehicle. A side plate (26) is welded to one end of the reinforcing plate (8), and the PLC system (10) is bolted to the side plate (26).

10. The control method of the automatic protection device for transformer component transportation according to claim 1, characterized in that: During transportation, if the pressure sensor (11) is squeezed and deformed, it sends a sensing signal to the PLC system (10), and the PLC system (10) sends a sensing command to the electric hydraulic rod (1). After receiving the sensing command, the electric hydraulic rod (1) promptly adjusts the lifting and lowering of the electric hydraulic rod (1), thereby achieving real-time adjustment of the force on the transport component during transportation and ensuring that its center of gravity is stable.

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