Synchronous hydraulic jacking device

Abstract

The invention discloses a synchronous hydraulic jacking device, which belongs to the field of jacking devices and comprises a sleeve frame base, a lower sleeve frame is arranged on the sleeve frame base, an upper sleeve frame is arranged at the top end of the lower sleeve frame, a lifting frame is sleeved on the peripheral side of the lower sleeve frame, lifting hooks are arranged on two side surfaces of the lifting frame, and oil cylinders are arranged on two sides of the top surface of the sleeve frame base. The top end of an oil cylinder piston rod is fixedly connected with the lifting frame, displacement sensors are fixed to the two sides of the top face of the sleeve frame base, the top ends of the displacement sensors are connected with the oil cylinder piston rod, a control unit is arranged on the sleeve frame base, and the output ends of the two displacement sensors are electrically connected with the input end of the control unit. The output end of the control unit is electrically connected with the control ends of the two oil cylinders. The lifting frame has the advantages that the extending lengths of the piston rods of the two oil cylinders are kept consistent, and therefore the situation that the lifting frame inclines when lifted upwards and friction between the lifting frame and the sleeve frame is increased, and parts are damaged is reduced.

Description

Technical Field

[0001] The invention relates to the field of jacking devices, in particular to a synchronous hydraulic jacking device. Background Art

[0002] With the increasing number of UHV lines built by the State Grid, the cross-sectional area of ​​the conductors is increasing, and the steel pipe towers and spanning towers used in the lines are increasing. Most of them are located in high mountains and steep hills. The towers are about 98 to 137.3 meters, the root distance is increasing, the weight of the towers is large, the single piece is large and heavy, and the cross arm length is long. The large root opening, high appearance, long cross arm, and heavy tower materials of the UHV towers have brought a series of difficulties to the construction units when assembling the towers. The construction environment is becoming increasingly harsh, and the operations in mountainous areas, hills, plateaus, and uninhabited areas are difficult to transport and assemble, which puts higher requirements on the poles used for construction tower assembly. At present, the ground-mounted double rocker poles used in tower assembly have a height of up to 400 meters, and the ordinary high poles have reached 150 meters. Therefore, it is necessary to provide a certain lifting device to lift the poles when assembling the poles.

[0003] In the related art, a Chinese invention patent with publication number CN115506650A discloses a process for assembling, erecting and disassembling a lifting and landing double rocker arm boom. First, a long auxiliary boom is used to install a hydraulic lifting frame. All of them are assembled in pieces in the following order: base - lower frame - upper frame - hydraulic cylinder - lifting bracket - working platform - connecting hydraulic pump station - track and trolley; finally, the four-way pull wire of the base and the four-way pull wire of the frame are installed; the mast cap and the mast top section are connected and placed inside the frame, and the mast top section is lifted by a stroke using a wire rope sleeve, and a standard mast section is placed on the track trolley and pushed into the frame, and the mast top section and the standard section are connected and tightened, and the installed part is lifted by a stroke using the wire rope sleeve again, and then the second standard mast section is pushed in and connected and tightened with the previous part, thereby completing the assembly of the boom.

[0004] In the above-mentioned related technology, by starting the hydraulic cylinder, the piston rods of the two hydraulic cylinders drive the jacking frame to jack up the mast. During the jacking, the jacking speeds of the hydraulic cylinders on both sides are difficult to keep synchronized, which will cause the jacking frame to be unbalanced and increase the friction between the jacking frame and the sleeve frame, thereby causing the possibility of component damage. Summary of the invention

[0005] In order to improve the problem that the lifting speeds of the hydraulic cylinders on both sides are difficult to keep synchronized during jacking, which will cause the jacking frame to be unbalanced, increase the friction between the jacking frame and the sleeve frame, and cause damage to components, the present application provides a synchronous hydraulic jacking device.

[0006] The synchronous hydraulic jacking device provided in this application adopts the following technical solution: A synchronous hydraulic jacking device comprises a sleeve frame base, a lower sleeve frame is arranged on the sleeve frame base, an upper sleeve frame is arranged on the top of the lower sleeve frame, a lifting frame is sleeved on the circumferential side of the lower sleeve frame, lifting hooks are arranged on both sides of the lifting frame, oil cylinders are arranged on both sides of the top surface of the sleeve frame base, the top of the oil cylinder piston rod is fixedly connected to the lifting frame, displacement sensors are fixed on both sides of the top surface of the sleeve frame base, the top of the displacement sensor is connected to the oil cylinder piston rod, a control unit is arranged on the sleeve frame base, the output ends of the two displacement sensors are respectively electrically connected to the input end of the control unit, and the output ends of the control unit are respectively electrically connected to the control ends of the two oil cylinders.

[0007] By adopting the above technical solution, when the piston rod of the cylinder pushes the lifting frame to drive the lifting hook to move upward, so that the lifting hook drives the mast to move upward, the two displacement sensors respectively monitor the extended lengths of the two cylinder piston rods in real time, and transmit this model to the control unit, so that the control unit can adjust the extension speed of the two cylinder piston rods in time according to the extended lengths of the two cylinder piston rods monitored by the two displacement sensors, so that the extended lengths of the two cylinder piston rods are kept consistent, thereby reducing the possibility of tilting of the lifting frame when it is lifted upward, increasing the friction between the lifting frame and the sleeve frame, and causing damage to components.

[0008] Preferably, the lifting hook includes a hook and two mounting plates fixed on the side surfaces of the lifting frame, the two mounting plates are arranged parallel to each other, a rotating shaft is fixed between the two mounting plates, the hook is sleeved on the outer circumferential surface of the rotating shaft, the hook is rotatably connected to the rotating shaft, an abutment block is fixed on the top surface of the hook, and the abutment block abuts against the side surface of the lifting frame near the side surface of the upper sleeve frame.

[0009] By adopting the above technical solution, when the piston rod of the oil cylinder drives the lifting frame to move downward, the hook rotates upward when it abuts against the mast, so that the hook is separated from the mast. When the hook moves to the mast lifting position, the hook rotates downward under its own gravity, so that the abutment block is close to the side of the upper frame and abuts against the side of the lifting frame, so that when the piston rod of the oil cylinder drives the lifting frame to move upward, the lifting frame drives the hook to move upward, and the hook is stuck in the slot on the upper part of the mast, so that the hook drives the mast to move upward.

[0010] Preferably, the lifting frame is in a square frame shape, and a mounting frame 1 is fixed to both ends of the top and bottom surfaces of each side of the lifting frame, a pulley 1 is rotatably mounted on the mounting frame 1, and the outer peripheral surface of the pulley 1 can roll on the side surface of the upper sleeve frame.

[0011] By adopting the above technical solution, pulleys are arranged at both ends of the top and bottom surfaces of each side of the lifting frame, so that the outer circumference of pulley one abuts against the side surface of the upper sleeve frame, thereby improving the stability of the lifting frame when moving vertically.

[0012] Preferably, four mounting rods 1 are fixed on the lower frame, and the four mounting rods 1 form a square frame shape. Mounting frames 2 are fixed on both sides of the top surface of the mounting rods 1, and pulley 2 is rotatably installed between the opposite inner sides of the mounting frames 2.

[0013] By adopting the above technical solution, when the hook on the lifting frame lifts the mast and moves it upward, the pulley 2 rolls on the side of the mast, thereby reducing the possibility of shaking of the mast along the vertical movement.

[0014] Preferably, two side walls of the lower frame are fixed with mounting rods 2, and the two mounting rods 2 are arranged parallel to each other, a mounting rod 3 is fixed to one of the side walls of the lower frame adjacent to the two mounting rods 2, a mounting frame 3 is fixed to one end of the top surface of the two mounting rods 2 close to the mounting rod 3, a pulley 3 is rotatably installed between the opposite inner side surfaces of the mounting frame 3, a mounting frame 4 is fixed to both ends of the top surface of the mounting rod 3, and a pulley 4 is rotatably installed between the opposite inner side surfaces of the mounting frame 4.

[0015] By adopting the above technical solution, when the mast is moved into the lower frame, two corners of the mast are respectively abutted against two adjacent pulleys three and four, thereby facilitating positioning of the mast during installation.

[0016] Preferably, mounting frames five are fixed at the corners of the top surface of the upper sleeve frame, a pulley five is rotatably mounted between the opposite inner side surfaces of the mounting frames five, and a positioning groove is provided on the outer peripheral surface of the pulley five.

[0017] By adopting the above technical solution, pulleys five are arranged at the corners of the top surface of the upper frame. When the lifting frame drives the mast to move upward, the corners of the mast are inserted into the positioning grooves, thereby reducing the shaking of the top of the mast when the mast moves upward, thereby improving the stability of the mast moving upward.

[0018] Preferably, the sleeve base includes a mounting seat and a support seat arranged below the mounting seat, the lower sleeve is installed on the top surface of the mounting seat, support columns are fixed at the corners of the top surface of the support seat, the top end of the support column is sleeved with a sleeve, the sleeve is rotatably connected to the support column, the top end of the sleeve is inserted with a top column, the top column is threadedly connected to the sleeve, and the top end of the top column is hinged to the bottom surface of the mounting seat.

[0019] By adopting the above technical solution, when the bracket base is placed on the ground, the sleeves at the corners of the top surface of the support column are rotated respectively, and the sleeves drive the top column to move upward, so that the mounting seat is adjusted to a horizontal state, which is convenient for assembling the holding pole and making the holding pole in a vertical state.

[0020] Preferably, a guide rod is fixed to the bottom surface of the top column, a guide groove is provided on the top surface of the support column, and the guide rod is vertically slidably disposed in the guide groove.

[0021] By adopting the above technical solution, when the rotating sleeve drives the top column to move vertically, the top column drives the guide rod to move vertically in the guide groove, so that the top column is more stable when moving vertically.

[0022] Preferably, two guide rails arranged parallel to each other are fixed to the top surface of the mounting seat, a fixing plate is provided on the side of the guide rail away from the mounting seat, the fixing plate is fixedly connected to the side surfaces of the two guide rails close to each other, support legs are fixed on both sides of the bottom surface of the fixing plate, and a hydraulic car is provided on the two guide rails, and the hydraulic car can move on the two guide rails.

[0023] By adopting the above technical solution, a hydraulic car is arranged on one side of the lower casing. When the lifting frame lifts the mast upward, the next section of the mast is placed on the hydraulic car, and then the hydraulic car is pushed to push the mast into the lower casing, so as to facilitate the connection and tightening of the previous part of the mast.

[0024] Preferably, the support leg comprises a support tube fixed to the bottom surface of the fixed plate, a support rod is inserted into the bottom end of the support tube, and the support rod is threadedly connected to the support tube.

[0025] By adopting the above technical solution, when the mounting seat is adjusted to be horizontal, the support column is rotated to move the support column downward, and the bottom end of the support column abuts against the ground, thereby facilitating the support column to support the guide rail.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the piston rod of the oil cylinder pushes the lifting frame to drive the lifting hook to move upward, and the lifting hook drives the mast to move upward, the two displacement sensors respectively monitor the extended length of the two oil cylinder piston rods in real time, and transmit this model to the control unit, so that the control unit can timely adjust the speed of the two oil cylinder piston rods according to the extended length of the two oil cylinder piston rods monitored by the two displacement sensors, so that the extended length of the two oil cylinder piston rods is consistent, thereby reducing the possibility of the lifting frame tilting when lifting upward, increasing the friction between the lifting frame and the sleeve frame, and causing component damage; 2. When the piston rod of the oil cylinder drives the lifting frame to move downward, the hook rotates upward when it contacts the mast, so that the hook is separated from the mast. When the hook moves to the mast lifting position, the hook rotates downward under its own weight, so that the abutment block is close to the side of the upper frame and contacts the side of the lifting frame, so that when the piston rod of the oil cylinder drives the lifting frame to move upward, the lifting frame drives the hook to move upward, and the hook is stuck in the slot on the upper part of the mast, so that the hook drives the mast to move upward; 3. Pulleys 5 are arranged at the corners of the top surface of the upper frame. When the lifting frame drives the mast to move upward, the corners of the mast are inserted into the positioning grooves, thereby reducing the shaking of the top of the mast when the mast moves upward, thereby improving the stability of the mast moving upward. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the synchronous hydraulic jacking device of an embodiment of the present application.

[0028] Figure 2 It is a cross-sectional view of the sleeve in the embodiment of the present application.

[0029] Figure 3 It is a schematic diagram of the structure of the lifting frame in the embodiment of the present application.

[0030] Figure 4 It is a schematic diagram of the structure of the hook in the embodiment of the present application.

[0031] Figure 5 It is a schematic diagram of the structure of the lower frame in the embodiment of the present application.

[0032] Figure 6 yes Figure 1 A magnified schematic diagram of center A.

[0033] Figure 7 It is a structural schematic diagram of the hydraulic vehicle in the embodiment of the present application.

[0034] Figure numerals: 1, sleeve frame base; 11, support seat; 12, mounting seat; 13, support column; 14, sleeve; 15, top column; 16, guide rod; 17, guide groove; 18, wedge block; 2, lower sleeve frame; 21, mounting rod one; 22, mounting frame two; 23, pulley two; 24, mounting rod two; 25, mounting frame three; 26, pulley three; 27, mounting rod three; 28, mounting frame four; 29, pulley four; 3, upper sleeve frame; 31, mounting frame five; 32. Pulley five; 33. Positioning groove; 4. Lifting frame; 41. Cylinder; 42. Lifting hook; 421. Mounting plate; 422. Rotating shaft; 423. Hook; 424. Abutment block; 425. Lifting frame one; 426. Lifting frame two; 43. Mounting frame one; 44. Pulley one; 45. Displacement sensor; 46. Control unit; 5. Guide rail; 51. Fixing plate; 52. Support leg; 521. Support pipe; 522. Support rod; 53. Hydraulic vehicle. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-7 This application is described in further detail.

[0036] The embodiment of the present application discloses a synchronous hydraulic jacking device.

[0037] Reference Figure 1 A synchronous hydraulic jacking device includes a frame base 1, a lower frame 2 is arranged on the top surface of the frame base 1, an upper frame 3 is arranged on the top of the lower frame 2, and the four corners of the bottom end of the upper frame 3 are fixedly connected with the four corners of the top end of the lower frame 2 by bolts, and the upper frame 3 and the lower frame 2 are both frame structures.

[0038] Reference Figure 1 and Figure 2 The sleeve frame base 1 includes a support seat 11 and a mounting seat 12 arranged above the support seat 11. A plurality of wedge blocks 18 are inserted between the support seat 11 and the mounting seat 12. The lower sleeve frame 2 is fixed to the top surface of the mounting seat 12 by bolts. Support columns 13 are fixed at the corners of the top surface of the support seat 11. The top end of the support column 13 is sleeved with a sleeve 14. The sleeve 14 is rotatably connected to the support column 13. The top end of the sleeve 14 is inserted into a top column 15. The top column 15 is threadedly connected to the sleeve 14. The top end of the top column 15 is hinged to the bottom surface of the mounting seat 12. The bottom surface of the top column 15 is fixed with a guide rod 16. The top surface of the support column 13 is provided with a guide groove 17. The guide rod 16 is vertically slidably arranged in the guide groove 17.

[0039] When it is necessary to assemble the pole, fix the frame base 1 at the designated construction position, then place the level ruler on the top surface of the mounting seat 12, then rotate the four sleeves 14 at the corners of the top surface of the support seat 11 respectively, and the sleeves 14 drive the top column 15 to move vertically, so that the top column 15 pushes the mounting seat 12 to move vertically, and observe the level ruler until the mounting seat 12 is adjusted to a horizontal state, then insert the wedge block 18 between the support seat 11 and the mounting seat 12, then fix the lower frame 2 to the top surface of the mounting seat 12 by bolts, and then fix the upper frame 3 to the top of the lower frame 2 by bolts, so that the pole can be in a vertical state when assembling the pole.

[0040] Reference Figure 1 , Figure 3 and Figure 4The upper sleeve 3 is sleeved with a lifting frame 4 on the circumferential side, and the lifting frame 4 includes a lifting frame 1 425 and a lifting frame 2 426, and the lifting frame 1 425 and the lifting frame 2 426 are fixedly connected by bolts. Vertically arranged oil cylinders 41 are fixed on both sides of the top surface of the mounting seat 12, and the top ends of the piston rods of the two oil cylinders 41 are fixedly connected to the lifting frame 1 425 and the lifting frame 2 426 respectively. Two lifting hooks 42 are fixed on the two sides of the lifting frame 1 425 and the lifting frame 2 426 away from each other, and the two lifting hooks 42 are respectively located on both sides of the oil cylinder 41. The lifting hook 42 includes two mounting plates 421 fixed on the side of the lifting frame 2 426 and arranged parallel to each other, and a rotating shaft 422 is fixed between the two mounting plates 421, and a hook 423 is sleeved on the rotating shaft 422, and the hook 423 is rotatably connected to the rotating shaft 422. An abutment block 424 is integrally formed at one end of the top surface of the hook 423, and the side of the abutment block 424 close to the upper sleeve frame 3 abuts against the side of the lifting frame 4 away from the upper sleeve frame 3. A mounting frame 1 43 is fixed to both ends of the top and bottom surfaces of each side of the lifting frame 4, and a pulley 1 44 is rotatably mounted between the opposite inner sides of the mounting frame 1 43, and the pulley 1 44 can roll on the side wall of the upper sleeve frame 3.

[0041] When it is necessary to assemble the boom, move the mast into the lower frame 2 so that the top of the piston rod of the oil cylinder 41 is located at the lowest position, and the hook 423 is clamped in the slot on the upper part of the mast. Then start the two oil cylinders 41 at the same time, and the piston rods of the two oil cylinders 41 push the lifting frame 4 to move upward, and the lifting frame 4 drives the hook 423 to move upward, and the hook 423 drives the mast to lift a standard section upward, and then place the next mast section in the lower frame 2 and fix it with the previously lifted mast by bolts. Then, make the piston rods of the two oil cylinders 41 fall slightly, so that the lifting frame 4 drives the hook 423 to fall, so that the hook 423 falls into the slot on the next mast section, and then start the oil cylinder 41 to lift and install the next mast section. Repeat the above operations to complete the assembly of the ground-mounted double rocker arm boom.

[0042] Reference Figure 1 , vertically arranged displacement sensors 45 are fixed on both sides of the top surface of the mounting seat 12, and the top of the displacement sensor 45 is connected to the piston rod of the oil cylinder 41. A control unit 46 is arranged on one side of the top surface of the mounting seat 12, and the output ends of the two displacement sensors 45 are electrically connected to the input ends of the control unit 46 respectively, and the output ends of the control unit 46 are electrically connected to the control ends of the two oil cylinders 41 respectively.

[0043] When the oil cylinder 41 is started and the piston rod of the oil cylinder 41 pushes the lifting frame 4 to move vertically, the two displacement sensors 45 respectively monitor the extension length of the piston rod of the oil cylinder 41 and transmit the monitored data to the control unit 46. The control unit 46 compares the data monitored by the two displacement sensors 45, so that the control unit 46 can timely adjust the extension speed of the piston rods of the two oil cylinders 41 according to the data monitored by the two displacement sensors 45, thereby facilitating the extension length of the piston rods of the two oil cylinders 41 to remain consistent.

[0044] Reference Figure 1 , Figure 5 and Figure 6 The four side walls of the lower frame 2 are all equipped with mounting rods 1 21, and the four mounting rods 1 21 form a square frame. The four mounting rods 1 21 are respectively located at the upper end of the lower frame 2. The top surfaces of the four mounting rods 1 21 are fixed with mounting frames 22 on both sides, and a pulley 23 is rotatably mounted between the opposite inner sides of the mounting frames 22, and the pulley 23 can roll on the side wall of the mast. The top surface corners of the upper frame 3 are all fixed with mounting frames 5 31, and a pulley 5 32 is rotatably mounted between the opposite inner sides of the mounting frames 5 31, and a positioning groove 33 is provided on the outer circumference of the pulley 5 32, and the positioning groove 33 is a V-shaped groove, and the corner of the mast can pass through the positioning groove 33.

[0045] By arranging pulley 23 on the lower sleeve 2 and pulley 5 32 at the corner of the top surface of the upper sleeve 3, when the oil cylinder 41 is started to lift the mast upward, pulley 23 rolls on the side wall of the mast, and the corner of the mast passes through the positioning groove 33, thereby reducing the possibility of shaking when the mast is lifted upward.

[0046] Reference Figure 1 and Figure 5 , mounting rods 24 are fixed to both side walls of the lower sleeve frame 2, and the two mounting rods 24 are arranged parallel to each other, and mounting rods 3 27 is fixed to one of the side walls of the lower sleeve frame 2 adjacent to the two mounting rods 24. Mounting frame 3 25 is fixed to one end of the top surface of the two mounting rods 24 close to the mounting rods 3 27, and pulley 3 26 is rotatably mounted between the opposite inner sides of the mounting frame 3 25. Mounting frame 4 28 is fixed to both ends of the top surface of the mounting rod 3 27, and pulley 4 29 is rotatably mounted between the opposite inner sides of the mounting frame 4 28.

[0047] Reference Figure 1 , Figure 5 and Figure 7Two guide rails 5 arranged parallel to each other are fixed on the top surface of the mounting seat 12. A fixing plate 51 is arranged at one end of the two guide rails 5 away from the mounting seat 12. The fixing plate 51 is fixedly connected to the sides of the two guide rails 5 close to each other. Support legs 52 are fixed on both sides of the bottom surface of the fixing plate 51. The support legs 52 include a support tube 521 fixed to the bottom surface of the fixing plate 51. A support rod 522 is inserted at the bottom end of the support tube 521. The support rod 522 is threadedly connected to the support tube 521. A hydraulic vehicle 53 is placed on the two guide rails 5. The hydraulic vehicle 53 can move along the length direction of the guide rails 5.

[0048] Place the mast on the hydraulic trolley 53, move the hydraulic trolley 53 toward the lower casing 2, and allow the hydraulic trolley 53 to transport the mast into the lower casing 2, so that two corners of the mast abut against the adjacent pulley three 26 and pulley four 29, so that the mast is aligned with the lifted mast, which is convenient for the next section of the mast to be connected to the lifted mast.

[0049] The implementation principle of a synchronous hydraulic jacking device in the embodiment of the present application is as follows: when assembling the ground-mounted double-arm holding rod, the mast is moved onto the hydraulic vehicle 53, and the hydraulic vehicle 53 is moved toward the lower frame 2, so that the hydraulic vehicle 53 drives the mast to move toward the lower frame 2, so that two corners of the mast are respectively abutted against the pulley three 26 and the pulley four 29, and then the oil cylinder 41 is started, so that the piston rod of the oil cylinder 41 falls slightly, and the piston rod of the oil cylinder 41 drives the lifting frame 4 to fall, and the lifting frame 4 drives the hook 423 to fall, so that the hook The hook 423 is clamped in the slot on the upper part of the mast, and then the two oil cylinders 41 are started at the same time, the piston rods of the two oil cylinders 41 drive the lifting frame 4 to move upward, the lifting frame 4 drives the hook 423 to move upward, the hook 423 drives the mast to move a standard section, and then the next mast section is moved to the hydraulic vehicle 53, and the hydraulic vehicle 53 is pushed to move the next mast section to the lower frame 2, and the next mast section is fixedly connected to the lifted mast, and then the above operations are repeated to complete the assembly of the ground-mounted double-arm boom. When the piston rods of the oil cylinders 41 push the lifting frame 4 upward, two displacement sensors 45 are set to monitor the extended lengths of the piston rods of the two oil cylinders 41 in real time, and the monitored extended lengths of the piston rods of the two oil cylinders 41 are transmitted to the control unit 46. The control unit 46 compares the extended lengths of the piston rods of the two oil cylinders 41, so that the control unit 46 can timely adjust the pushing speed of the piston rods of the two oil cylinders 41 according to the extended lengths of the piston rods of the two oil cylinders 41 monitored by the two displacement sensors 45, so that the extended lengths of the piston rods of the two oil cylinders 41 remain consistent, thereby reducing the possibility of damage to the components caused by friction between the lifting frame 4 and the sleeve frame when it is tilted when lifted upward.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A synchronous hydraulic jacking device, characterized in that: The invention comprises a sleeve frame base (1), wherein a lower sleeve frame (2) is arranged on the sleeve frame base (1), an upper sleeve frame (3) is arranged at the top of the lower sleeve frame (2), a lifting frame (4) is sleeved on the peripheral side of the lower sleeve frame (2), and lifting hooks (42) are arranged on both sides of the lifting frame (4), oil cylinders (41) are arranged on both sides of the top surface of the sleeve frame base (1), and the top of the piston rod of the oil cylinder (41) is fixedly connected to the lifting frame (4), displacement sensors (45) are fixed on both sides of the top surface of the sleeve frame base (1), and the top of the displacement sensor (45) is connected to the piston rod of the oil cylinder (41), and a control unit (46) is arranged on the sleeve frame base (1), and the output ends of the two displacement sensors (45) are respectively electrically connected to the input end of the control unit (46), and the output ends of the control unit (46) are respectively electrically connected to the control ends of the two oil cylinders (41).

2. A synchronous hydraulic jacking device according to claim 1, characterized in that: The lifting hook (42) comprises a hook (423) and two mounting plates (421) fixed on the side of the lifting frame (4); the two mounting plates (421) are arranged parallel to each other; a rotating shaft (422) is fixed between the two mounting plates (421); the hook (423) is sleeved on the outer peripheral surface of the rotating shaft (422); the hook (423) is rotatably connected to the rotating shaft (422); a contact block (424) is fixed on the top surface of the hook (423); the contact block (424) is close to the side of the upper frame (3) and contacts the side of the lifting frame (4).

3. A synchronous hydraulic jacking device according to claim 1, characterized in that: The lifting frame (4) is in the shape of a square frame, and a mounting frame (43) is fixed to both ends of the top and bottom surfaces of each side of the lifting frame (4), and a pulley (44) is rotatably mounted on the mounting frame (43), and the outer peripheral surface of the pulley (44) can roll on the side surface of the upper sleeve frame (3).

4. A synchronous hydraulic jacking device according to claim 1, characterized in that: Four mounting rods (21) are fixed on the lower sleeve frame (2), and the four mounting rods (21) form a square frame shape. Mounting frames (22) are fixed on both sides of the top surface of the mounting rods (21), and pulleys (23) are rotatably installed between the opposite inner sides of the mounting frames (22).

5. A synchronous hydraulic jacking device according to claim 4, characterized in that: The lower sleeve frame (2) has two side walls fixed with mounting rods 2 (24), the two mounting rods 2 (24) are arranged parallel to each other, one of the side walls of the lower sleeve frame (2) adjacent to the two mounting rods 2 (24) is fixed with mounting rod 3 (27), one end of the top surface of the two mounting rods 2 (24) close to the mounting rod 3 (27) is fixed with mounting frame 3 (25), a pulley 3 (26) is rotatably installed between the opposite inner side surfaces of the mounting frame 3 (25), mounting frame 4 (28) is fixed at both ends of the top surface of the mounting rod 3 (27), and a pulley 4 (29) is rotatably installed between the opposite inner side surfaces of the mounting frame 4 (28).

6. A synchronous hydraulic jacking device according to claim 1, characterized in that: A mounting frame five (31) is fixed at the corners of the top surface of the upper sleeve frame (3), a pulley five (32) is rotatably mounted between the opposite inner sides of the mounting frame five (31), and a positioning groove (33) is provided on the outer peripheral surface of the pulley five (32).

7. The synchronous hydraulic jacking device according to claim 1, characterized in that: The sleeve frame base (1) comprises a mounting seat (12) and a support seat (11) arranged below the mounting seat (12); the lower sleeve frame (2) is mounted on the top surface of the mounting seat (12); support columns (13) are fixed at the corners of the top surface of the support seat (11); a sleeve (14) is sleeved on the top end of the support column (13); the sleeve (14) is rotatably connected to the support column (13); a top column (15) is inserted at the top end of the sleeve (14); the top column (15) is threadedly connected to the sleeve (14); and the top end of the top column (15) is hinged to the bottom surface of the mounting seat (12).

8. A synchronous hydraulic jacking device according to claim 7, characterized in that: A guide rod (16) is fixed to the bottom surface of the top column (15), a guide groove (17) is provided on the top surface of the support column (13), and the guide rod (16) is vertically slidably arranged in the guide groove (17).

9. A synchronous hydraulic jacking device according to claim 7, characterized in that: Two guide rails (5) arranged parallel to each other are fixed on the top surface of the mounting seat (12); a fixing plate (51) is arranged on the side of the guide rail (5) away from the mounting seat (12); the fixing plate (51) is fixedly connected to the side surfaces of the two guide rails (5) close to each other; supporting legs (52) are fixed on both sides of the bottom surface of the fixing plate (51); a hydraulic vehicle (53) is arranged on the two guide rails (5); and the hydraulic vehicle (53) can move on the two guide rails (5).

10. A synchronous hydraulic jacking device according to claim 9, characterized in that: The support leg (52) comprises a support tube (521) fixed to the bottom surface of the fixing plate (51), a support rod (522) is inserted into the bottom end of the support tube (521), and the support rod (522) is threadedly connected to the support tube (521).

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