A walking form jacking device and automatic form launching method

Abstract

The present application relates to a kind of tractor guide beam pushing device and guide beam automatic piling method, by setting ladder type structure in the front end of ordinary guide beam and setting rotatable structure, realize the automatic piling of guide beam, while not cause the excessive axial force of guide beam, and not set jack and other complex equipment in the front end of guide beam, avoid the deflection of the front end of guide beam to be heavy.Guide beam is pushed forward when it advances, it can meet the specific constraint required for rotating unit to rotate around a point and the action of force, without additional force, realize automatic piling, since the required thrust for rotation is small, the axial force of guide beam is very small, save workload, shorten construction period;Avoid manual, improve the mechanization degree of construction, improve construction efficiency and construction safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of bridge construction technology, in particular to a drag-and-pull type guide beam pushing device and a guide beam automatic piling method. BACKGROUND

[0002] The pushing construction technology was first proposed by Leonghardt and Paul in 1959 and was first used in the Ager Bridge in Austria. The pushing construction has the advantages of low construction cost, small noise and stability, is suitable for the construction of large bridges, and can be used for the construction of valley, deep water and high pier bridges, continuous operation and good bridge integrity. At the same time, due to the large front end cantilever of the bridge during pushing, in order to make the force of the beam body in equilibrium, a guide beam structure is designed. However, in the pushing construction, the bending deflection of the guide beam under the action of its own weight makes the height of the front end of the guide beam lower than the design height of the main beam, and the guide beam cannot be supported on the front end support pier, so the difficulty of piling the guide beam on the front end pier becomes one of the key difficulties to be overcome in the pushing construction.

[0003] At present, in order to solve the difficulty of piling the guide beam, the main methods used include setting a temporary working platform beside the support pier to place a jack to vertically lift the guide beam to pile it on the pier, using a cable tower to lift the front end of the guide beam to reduce the deflection, using a circular arc guide beam to automatically pile it on the pier, and using a guide beam embedded with a jack to lift the guide beam to pile it on the pier.

[0004] In the existing method, the setting of the temporary working platform makes the pushing construction work very heavy, time-consuming and labor-intensive, and has poor construction safety; the cable tower is expensive and large in size, and is only suitable for the pushing construction of a very wide beam body; the circular arc guide beam causes large axial force along the beam body and large horizontal force on the pier when it is automatically piled on the pier; and the guide beam embedded with a jack realizes the automatic piling of the guide beam, but the large weight of the front end of the guide beam increases the deflection of the guide beam.

[0005] The main problems existing in the current guide beam piling method are: (1) without using the self-piling scheme, it is time-consuming, labor-intensive, has large work load, poor construction safety and poor economy; (2) using the self-piling scheme causes large axial force on the beam body and disadvantageous stress on the guide beam, or causes more serious deflection of the front end of the guide beam. Therefore, it is necessary to design a guide beam piling method which can automatically pile the guide beam without causing disadvantageous stress on the guide beam and increasing the deflection of the front end of the guide beam. SUMMARY

[0006] The purpose of the present application is to overcome the above-mentioned technical defects and provide a drag-and-pull type guide beam pushing device and a guide beam automatic piling method. By setting a stepped structure at the front end of the ordinary guide beam and setting a rotatable structure, the automatic piling of the guide beam is realized without causing excessive axial force on the guide beam, and without setting complex equipment such as a jack at the front end of the guide beam to avoid increasing the deflection of the front end of the guide beam.

[0007] The purpose of the present application can be achieved by the following technical solutions:

[0008] A rotatable guide beam, comprising a guide beam body, a front end unit and a rotating unit,

[0009] The front end of the guide beam body is provided with two front end units, the front end unit comprises a rotating shaft, a first side plate and a second side plate, a rotating shaft is arranged between the first side plate and the second side plate, and the rotating shaft is rotationally connected with the rotating unit;

[0010] The rotating unit comprises a through hole, a connecting shaft, a third side plate and a fourth side plate, the third side plate and the fourth side plate are connected through the connecting shaft, the third side plate and the fourth side plate are both provided with a through hole, and the two through holes are respectively rotationally connected with a rotating shaft.

[0011] Further, the first side plate and the second side plate are reverse "Z" type side plates, the stepped structure size of the reverse "Z" type side plate is determined by the deflection value of the specific front end unit, the higher the step is, the greater the deflection value is,

[0012] The size of the rotating unit is adjusted according to the stepped structure size, so that the bottom surface of the rotating unit after the pier on the guide beam body is located on the same plane as the bottom surface of the guide beam body.

[0013] Further, a space for storing the third side plate or the fourth side plate of the rotating unit is arranged between the first side plate and the second side plate, so as to ensure that the rotating unit is not limited within a certain range, and the size of the space reserved for arranging the rotating unit in the front end unit is determined by the size of the rotating unit.

[0014] Further, the rotating shaft adopts a circular cross section with an irregular blocking block, which limits the rotation of the rotating unit within a specified range, the maximum rotation amplitude of the rotating unit is 90°, and the rotating unit can be rotated from a vertical state to a horizontal state,

[0015] The rotating shaft is used for transmitting axial thrust, the size of the rotating shaft is determined by the strength requirement, so as to ensure that the axial thrust can be borne, and the through hole of the rotating unit is matched.

[0016] Further, a plurality of stiffening plates are arranged on the first side plate and the second side plate,

[0017] The stiffening plates are vertically arranged on the first side plate and the second side plate, so as to ensure that the front end unit is subjected to buckling-resistant steel,

[0018] Further, the first side plate and the second side plate are provided with an electromagnet assembly above, the current size of the electromagnet assembly is controllable, the electromagnet assembly is used for generating magnetic force on the third side plate and the fourth side plate of the rotating unit, the third side plate and the fourth side plate are made of steel material, the steel material can be adsorbed by the magnetic force provided by the electromagnet assembly, the steel material is light high-strength steel material, the self-weight is reduced, and the steel material will not be buckled when being stressed.

[0019] Further, the third side plate and the fourth side plate are provided with a pressure sensor at the side end, the pressure sensor is electrically connected with the electromagnet assembly, the pressure sensor is used for sending the collected pressure signal to the central control equipment, the current size of the electromagnet assembly is controlled by the central control equipment, so that the magnetic force size of the magnetic force part provided by the electromagnet assembly is controlled.

[0020] The number and arrangement position of the pressure sensor included in the rotating unit are determined by the deflection value of the specific engineering front-end unit, so that when the rotating unit is in rigid contact with the pier rail, the contact part is arranged with the pressure sensor.

[0021] Further, the size of the electromagnet assembly is determined by the position of the rotating unit behind the pier on the guide beam body, so that when the guide beam body is on the pier, the bottom surface of the electromagnet assembly is completely contained by the top surface of the rotating unit at the contact part.

[0022] Further, the third side plate and the fourth side plate are provided with a rubber pad below, so as to prevent the rotating unit from being damaged by collision with the pier when rotating.

[0023] Further, the through hole is provided with a pad, the size of the pad is determined by the size of the through hole, so as to ensure the adaptation, and the arc-shaped pad 7 is used for reducing the wear of the rotating shaft and the through hole when rotating.

[0024] Further, three connecting shafts are arranged between the third side plate and the fourth side plate of the rotating unit, so as to ensure that the symmetrical third side plate and the fourth side plate of the rotating unit rotate synchronously.

[0025] Further, the through hole is an arc-shaped through hole, the pad is an arc-shaped pad, and the connecting shaft is a cylindrical connecting shaft.

[0026] The application also provides a towing guide beam pushing device, which comprises two pier rails and the above-mentioned rotatable guide beam,

[0027] Each of the pier rails comprises a base, a roller rotating shaft and a roller, the bottom end of the base is fixed on the pier, the top end of the base is provided with the roller rotating shaft, and the roller rotates around the roller rotating shaft.

[0028] When the rotatable guide beam is on the pier, the third side plate and the fourth side plate of the rotating unit of the rotatable guide beam are in contact with the rollers of the pier rail.

[0029] Further, when the rotating unit is in contact with the pier slide rail, the pressure sensor is in contact with the roller.

[0030] Further, the pier slide rail further comprises a track, a base and a cover plate,

[0031] The cover plate is a "several" character-shaped cover plate, the middle bottom surface of the cover plate is in contact with the top surface of the base, the two end bottom surfaces of the cover plate are fixed on the top surface of the pier, the base is fixed on the pier through the cover plate, a plurality of rollers are fixed above the base, and the plurality of rollers are connected through the track.

[0032] Further, the top surface of the pier is provided with a plurality of cylindrical holes for placing screw sleeves, a plurality of screws are arranged on the cover plate, the screws are fixed in the screw sleeves, so that the cover plate is fixed on the pier, and the size and number of the screws are determined according to the size of the pier slide rail, so that the pier slide rail is well connected with the pier.

[0033] Further, the screw sleeve is provided with a threaded space at the center, the threaded space is used for installing the screw, the size of the screw sleeve is determined according to the size of the screw, so that the screw is firmly installed, and a groove is reserved on the side surface of the screw sleeve, so that the screw sleeve is well connected with the pier when the screw sleeve is poured into the pier.

[0034] Further, the roller is a cylindrical ring-shaped roller, and the cover plate is a "several" character-shaped cover plate.

[0035] Further, the size of the pier slide rail is determined according to the size of the pier and the size of the rotatable guide beam, so that the front end of the guide beam body can completely fall on the pier slide rail, and the height of the pier slide rail is consistent with the height of the ordinary drag type top-pushing slide rail.

[0036] In addition, the application also provides a guide beam automatic piling method, which adopts the above-mentioned drag type guide beam top-pushing device, and the specific steps are as follows:

[0037] S1, the guide beam body is installed at the front end of the main beam, the rotating unit is vertically connected with the front end unit, and the electromagnet assembly is installed above the rotating unit;

[0038] S2, the screw sleeve is installed in the cylindrical hole reserved on the top surface of the pier, and the concrete is poured between the inner wall of the cylindrical hole and the outer wall of the screw sleeve;

[0039] S3, the two pier slide rails are symmetrically installed on the two sides of the top of the pier;

[0040] S4, when the rotatable guide beam is on the pier, the pressure sensors of the third side plate and the fourth side plate of the rotating unit are in contact with the rollers, the pressure sensors send the collected signals to the central control equipment, the current of the electromagnet assembly is continuously increased by the central control equipment, so that the magnetic force is enhanced;

[0041] S5, when the magnetic force is enhanced to a certain value, the rotating unit rotates under the action of the horizontal thrust, the electromagnetic force and the support force of the pier slide rail, so that the guide beam body is lifted;

[0042] S6, when the guide beam body is parallel to the pier, the guide beam body successfully goes onto the pier, and the horizontal thrust F controls the guide beam body to continue moving forward;

[0043] S7, when the rotating unit leaves the pier, the pressure sensor transmits a signal of no force to the central control equipment, the central control equipment controls the current of the electromagnetic assembly to gradually decrease to zero, the magnetic force gradually decreases to zero, and the rotating unit slowly rotates from the horizontal state to the initial vertical state.

[0044] Further, in step S1, the bottom surface of the guide beam body is in the same plane as the bottom surface of the main beam.

[0045] Further, in step S2, the top surface of the screw sleeve is in the same horizontal plane as the top surface of the pier.

[0046] Further, in step S4, the magnetic force of the electromagnetic assembly gradually increases to a certain value when receiving the signal of the central control equipment, and the torque of the magnetic force on the rotating shaft is greater than the torque of the gravity of the rotating unit on the rotating shaft, so that the rotating unit does not immediately return to the initial state under the action of the gravity of the rotating unit after pushing away from the pier.

[0047] Compared with the prior art, the present application has the following beneficial effects:

[0048] (1) The guide beam on the pier is realized automatically, and a temporary working platform is not needed to set up a vertical jack to assist the guide beam on the pier; when the guide beam is pushed forward, the specific constraint and force required for the rotating unit to rotate around a point are met, without the need for additional force, realizing automatic on-pier, saving work and shortening the construction period; manual work is saved, the mechanization degree of construction is improved, and the construction efficiency and safety are improved.

[0049] (2) The rotating unit is used to rotate on the pier slide rail, the pier slide rail does not obviously constrain the front end of the guide beam, the horizontal thrust required for the guide beam on the pier is small, and an additional electromagnetic device is used to assist rotation, which greatly reduces the axial force when the guide beam is on the pier, so that the guide beam is more reasonable and safe in force.

[0050] (3) The front end of the guide beam does not need to be additionally provided with a jack and other complex devices, a light-weight and high-strength rotating unit is provided, the weight of the front end of the guide beam is reduced, and the deflection of the front end of the guide beam is not caused; compared with the jack and other complex structures, the rotating structure of the front end of the guide beam has lower requirements for the structural strength of the front end of the guide beam, is more simple and convenient, and has lower equipment cost and good economy. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 Fig. 2 is a structural diagram of the front end unit of the guide beam body;

[0052] Figure 2 Fig. 3 is a sectional view of the front end unit of the guide beam body;

[0053] Figure 3 Fig. 4 is a structural diagram of the rotating unit;

[0054] Figure 4 Fig. 5 is a detailed structural diagram of the rotating unit;

[0055] Figure 5 Fig. 6 is a sectional view of the front end unit of the guide beam body combined with the rotating unit;

[0056] Figure 6 Fig. 7 is a structural diagram of the front end unit of the guide beam body combined with the rotating unit in the initial state before the pier;

[0057] Figure 7 Fig. 8 is a structural diagram of the front end unit of the guide beam body combined with the rotating unit after successfully passing the pier;

[0058] Figure 8 Fig. 9 is a structural diagram of the whole rotating guide beam;

[0059] Figure 9 Fig. 10 is a top view of the rotating guide beam;

[0060] Figure 10 Fig. 11 is a side view of the rotating guide beam;

[0061] Figure 11 Fig. 12 is a side view of the pier slide rail;

[0062] Figure 12 Fig. 13 is a front view of the pier slide rail;

[0063] Figure 13 Fig. 14 is a structural diagram of the base;

[0064] Figure 14 Fig. 15 is a sectional view of the screw sleeve;

[0065] Figure 15 Fig. 16 is a force analysis diagram of the rotating unit passing the pier;

[0066] Figure 16 Fig. 17 is a force analysis diagram of the rotating unit returning to the initial state after leaving the pier;

[0067] Figure 17 Fig. 18 is a side view of the arrangement of various devices when the rotating guide beam is about to pass the pier;

[0068] Figure 18 Fig. 19 is a working state diagram of the automatic pier passing of the rotating guide beam (I);

[0069] Figure 19 Fig. 2 is a working state diagram of the rotatable guide beam automatically piling on the pier (two);

[0070] Figure 20 Fig. 3 is a working state diagram of the rotatable guide beam automatically piling on the pier (three);

[0071] Figure 21 Fig. 4 is a working state diagram of the rotatable guide beam pushing forward (one);

[0072] Figure 22 Fig. 5 is a working state diagram of the rotatable guide beam pushing forward (two);

[0073] Figure 23 Fig. 6 is a working state diagram of the rotatable guide beam returning to the initial position before piling on the pier (one);

[0074] Figure 24 Fig. 7 is a working state diagram of the rotatable guide beam returning to the initial position before piling on the pier (two).

[0075] Brief description of the drawings: 1, front end unit, 2, stiffened plate, 3, rotating shaft, 4, electromagnet assembly, 5, magnetic force part, 6, rotating unit, 7, backing plate, 8, connecting shaft, 9, rubber backing plate, 10, pressure sensor, 11, pier slide rail, 12, roller, 13, track, 14, base, 15, cover plate, 16, screw, 17, screw sleeve, 18, groove, 19, guide beam main body, 20, first side plate, 21, second side plate, 22, third side plate, 23, fourth side plate, 24, pier, 25, through hole, F, horizontal thrust, Mf, electromagnetic force, G, gravity of rotating unit, N, support force of pier slide rail, O, first rotation center, O1, second rotation center. DETAILED DESCRIPTION

[0076] The application will be described in detail below with reference to the drawings and specific embodiments. The embodiments are implemented on the basis of the technical scheme of the application, and detailed implementation and specific operation processes are given, but the protection scope of the application is not limited to the following embodiments.

[0077] In the description of the application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0078] In the description of the present application, it should be noted that unless specifically defined and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0079] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The following examples and features in the examples can be combined with each other without conflict.

[0080] Embodiments

[0081] Reference Figures 1 to 23 The present embodiment provides a rotatable guide beam, comprising a front end unit 1 and a rotating unit 6,

[0082] The guide beam body 19 is provided with two front end units 1 at the front end, the front end unit 1 comprises a rotating shaft 3, a first side plate 20 and a second side plate 21, the rotating shaft 3 is arranged between the first side plate 20 and the second side plate 21, and the rotating shaft 3 is rotatably connected with the rotating unit 6.

[0083] The rotating unit 6 comprises a through hole 25, a connecting shaft 8, a third side plate 22 and a fourth side plate 23, the third side plate 22 and the fourth side plate 23 are connected by the connecting shaft 8, the third side plate 22 and the fourth side plate 23 are both provided with the through hole 25, and the two through holes 25 are respectively rotatably connected with one rotating shaft 3.

[0084] In the present embodiment, the first side plate 20 and the second side plate 21 are reverse "Z" type side plates, the stepped structure size of the reverse "Z" type side plate is determined by the deflection value of the specific engineering front end unit 1, the larger the deflection value, the higher the step,

[0085] The size of the rotating unit 6 is adjusted according to the stepped structure size, so that the bottom surface of the rotating unit 6 behind the pier 24 on the guide beam body 19 is located in the same plane as the bottom surface of the guide beam body 19.

[0086] In the present embodiment, the first side plate 20 and the second side plate 21 are provided with a space for storing the third side plate 22 or the fourth side plate 23 of the rotating unit 6, so as to ensure that the rotating unit 6 rotates within a certain range without restriction, and the size of the space reserved for the rotating unit 6 in the front end unit 1 is determined by the size of the rotating unit 6.

[0087] In the embodiment, the rotating shaft 3 adopts a circular cross-section with irregular blocks to limit the rotation of the rotating unit 6 within a specified range, and the rotating unit 6 can be rotated by a maximum of 90° from a vertical state to a horizontal state.

[0088] The rotating shaft 3 is used to transmit axial thrust, and the size of the rotating shaft 3 is determined by the strength requirement to ensure that it can withstand axial thrust and is matched with the through hole 25 of the rotating unit 6.

[0089] In the embodiment, a plurality of stiffening plates 2 are arranged on the first side plate 20 and the second side plate 21, and the stiffening plates 2 are vertically installed on the first side plate 20 and the second side plate 21.

[0090] The stiffening plates 2 are vertically installed on the front end unit 1, and the size of the stiffening plates 2 is determined by the required buckling resistance strength of the front end unit 1 to ensure that the front end unit 1 is resistant to buckling under stress.

[0091] In the embodiment, an electromagnet assembly 4 is arranged above the first side plate 20 and the second side plate 21, the current size of the electromagnet assembly 4 is controllable, the electromagnet assembly 4 is used to generate a magnetic force on the rotating unit 6, the third side plate 22 and the fourth side plate 23 are made of steel, the steel can be attracted by the magnetic force provided by the electromagnet assembly 4, and the steel is a lightweight high-strength steel, which reduces the self-weight and does not buckle under stress.

[0092] In the embodiment, a pressure sensor 10 is arranged at the side end of the third side plate 22 and the fourth side plate 23, the pressure sensor 10 is electrically connected with the electromagnet assembly 4, the pressure sensor 10 is used to send the collected pressure signal to the central control device, the central control device controls the current size of the electromagnet assembly 4, thereby controlling the magnetic force size of the magnetic force part 5 provided by the electromagnet assembly 4.

[0093] The number and arrangement position of the pressure sensor 10 included in the rotating unit 6 are determined by the deflection value of the specific front end unit 1 to ensure that the pressure sensor 10 is arranged at the contact position when the rotating unit 6 is in contact with the pier rail 11.

[0094] In the embodiment, the size of the electromagnet assembly 4 is determined by the position of the rotating unit 6 behind the pier 24 on the guide beam body 19 to ensure that the bottom surface of the electromagnet assembly 4 is completely contained by the top surface of the rotating unit 6 at the contact position when the electromagnet assembly 4 is behind the pier on the guide beam body 19.

[0095] In the embodiment, a rubber pad 9 is arranged below the third side plate 22 and the fourth side plate 23 to prevent the rotating unit 6 from being damaged by collision with the pier 24 when the rotating unit 6 is rotated.

[0096] In this embodiment, a backing plate 7 is provided in the through hole 25. The size of the backing plate 7 is determined by the size of the through hole 25 to ensure a proper fit. The arc-shaped backing plate 7 is used to reduce the wear of the rotating shaft 3 and the through hole 25 during rotation.

[0097] In this embodiment, three connecting shafts 8 are provided between the third side plate 22 and the fourth side plate 23 to ensure the synchronous rotation of the symmetric third side plate 22 and fourth side plate 23 of the rotating unit 6.

[0098] In this embodiment, the through hole 25 is an arc-shaped through hole, the backing plate 7 is an arc-shaped backing plate, and the connecting shaft 8 is a cylindrical connecting shaft.

[0099] This embodiment further provides a drag-type guide beam jacking device, which includes two pier slide rails 11 and the above-mentioned rotatable guide beam.

[0100] Each pier slide rail 11 includes a base 14, a roller rotating shaft, and a roller 12. The bottom end of the base 14 is fixed on the pier 24. A roller rotating shaft is provided at the top end of the base 14, and the roller 12 rotates around the roller rotating shaft.

[0101] When the rotatable guide beam reaches the pier 24, the third side plate 22 and the fourth side plate 23 of the rotating unit 6 of the rotatable guide beam are in contact with the roller 12 of the pier slide rail 11.

[0102] In this embodiment, when the rotating unit 6 just contacts the pier slide rail 11, the pressure sensor 10 is in contact with the roller 12.

[0103] In this embodiment, the pier slide rail 11 further includes a crawler 13, a base 14, and a cover plate 15.

[0104] The cover plate 15 is a "channel" - shaped cover plate. The middle bottom surface of the cover plate 15 is in contact with the top surface of the base 14. The bottom surfaces at both ends of the cover plate 15 are fixed on the top surface of the pier 24. The base 14 is fixed on the pier 24 through the cover plate 15. A plurality of rollers 12 are fixed above the base 14, and the plurality of rollers 12 are connected by a crawler 13.

[0105] In this embodiment, a plurality of cylindrical holes are provided on the top surface of the pier 24. The cylindrical holes are used to place screw sleeves 17. A plurality of screws 16 are provided on the cover plate 15. By fixing the screws 16 in the screw sleeves 17, the cover plate 15 is fixed on the pier 24. The size and quantity of the screws 16 are determined by the size of the pier slide rail 11 to ensure a good connection between the pier slide rail 11 and the pier 24.

[0106] In the embodiment, the screw sleeve 17 is provided with a threaded space for mounting the screw 16, and the size of the screw sleeve 17 is determined by the size of the screw 16 to ensure that the screw 16 is firmly mounted; the screw sleeve 17 is provided with a groove 18 on the side surface, so that the screw sleeve 17 is well connected with the pier 24 when it is poured into the pier 24.

[0107] In the embodiment, the roller 12 is a cylindrical ring-shaped roller, and the cover plate 15 is a few-shaped cover plate.

[0108] In the embodiment, the size of the pier platform slide rail 11 is determined by the size of the pier 24 and the size of the rotatable guide beam, so that the front end of the guide beam body 19 can completely fall on the pier platform slide rail 11, and the height of the pier platform slide rail 11 is consistent with the height of the ordinary pulling type pushing slide rail.

[0109] In addition, the embodiment also provides a guide beam automatic pier mounting method, which adopts the pulling type guide beam pushing device, and the specific steps are as follows:

[0110] S1, the guide beam body 19 is installed at the front end of the main beam, the rotating unit 6 is vertically connected with the front end unit 1, and the electromagnet assembly 4 is installed above the rotating unit 6;

[0111] S2, the screw sleeve 17 is installed in the cylindrical hole reserved on the top surface of the pier 24, and the concrete is poured between the inner wall of the cylindrical hole and the outer wall of the screw sleeve 17;

[0112] S3, the two pier platform slide rails 11 are symmetrically installed on the top of the pier 24 on both sides;

[0113] S4, when the rotatable guide beam is on the pier 24, the pressure sensor 10 of the third side plate 22 and the fourth side plate 23 of the rotating unit 6 is connected with the roller 12, the pressure sensor 10 sends the collected signal to the central control equipment, the central control equipment controls the current of the electromagnet assembly 4 to continuously increase, so that the magnetic force is enhanced;

[0114] S5, when the magnetic force is enhanced to a certain value, the rotating unit 6 rotates under the action of the horizontal pushing force F, the electromagnetic force Mf and the support force N of the pier platform slide rail, so that the guide beam body 19 is lifted;

[0115] S6, when the guide beam body 19 is parallel to the pier 24, the guide beam body 19 successfully goes up the pier 24, and the horizontal pushing force F controls the guide beam body 19 to continue to move forward;

[0116] S7, when the rotating unit 6 leaves the pier 24, the pressure sensor 10 transmits the signal of no force to the central control equipment, the central control equipment controls the current of the electromagnet assembly 4 to gradually decrease to zero, the magnetic force gradually decreases to zero, and the rotating unit 6 slowly rotates from the horizontal state to the initial vertical state.

[0117] In this embodiment, in step S1, the bottom surface of the guide beam body 19 is in the same plane as the bottom surface of the main beam.

[0118] In this embodiment, in step S2, the top surface of the screw sleeve 17 is in the same horizontal plane as the top surface of the pier 24.

[0119] In this embodiment, in step S4, the magnetic force provided by the electromagnet assembly 4 gradually increases to a certain value when the control device signal is received, and the magnetic force of the certain value has a torque on the rotating shaft 3 that is greater than the torque of the gravity of the rotating unit 6 on the rotating shaft 3, so that the rotating unit 6 does not immediately rotate back to the initial state under the action of the gravity G of the rotating unit after pushing away from the pier 24.

[0120] Referring to Figures 1 to 6 The rotatable guide beam is correctly installed so that the bottom surface of the guide beam body 19 is in the same plane as the bottom surface of the main beam, and the working state of the electromagnet assembly 4 is checked to see if it is normal.

[0121] Referring to Figure 13 The screw sleeve 17 is installed into the reserved cylindrical hole in the top surface of the pier 24, the top surface of the screw sleeve 17 is in the same horizontal plane as the top surface of the pier 24, and concrete is poured between the inner wall of the cylindrical hole and the outer wall of the screw sleeve 17.

[0122] Referring to Figure 11 And Figure 12 The pier slide rail 11 is symmetrically installed on both sides of the top of the pier 24 to ensure that the rotating unit 6 can completely fall on the pier slide rail 11 after being lifted onto the pier 24, the several-shaped cover plate 15 is installed, and the screw 16 is installed to ensure that the pier slide rail 11 is well connected with the pier.

[0123] The force analysis of the rotating unit 6 lifting the pier 24 is shown in Figure 14 The rotating unit 6 rotates the pier 24 around the first rotation center O under the action of the horizontal thrust F, the electromagnetic force Mf, and the support force N of the pier slide rail. The rotating unit 6 rotates around the rotating shaft 3 relative to the front-end unit 1. The gravitational torque of the rotating unit 6 rotating around the first rotation center O is less than the combined torque of the horizontal thrust F and the electromagnetic force Mf around the first rotation center O.

[0124] The force analysis of the rotating unit 6 returning to the initial state after leaving the pier 24 is shown in Figure 15 The rotating unit 6 slowly rotates to return to the initial state under the action of the gravity G of the rotating unit and the combined torque of the electromagnetic force Mf around the second rotation center O1. The electromagnetic force Mf should be slowly reduced to prevent the rotating unit 6 from rotating violently under the action of a large combined torque.

[0125] Figure 17 The side view of the arrangement of each device when the rotatable guide beam is about to lift the pier 24.

[0126] Figure 18 For a certain state of the rotating unit 6 when rotating, the rotating unit 6 is constrained by the pier slide rail 11, the pressure sensor 10 is subjected to pressure, and signals are transmitted to the central control device. The central control device controls the current in the electromagnet assembly 4 to continuously increase, the magnetic force is increased to a certain value, and under the action of the horizontal thrust F, the electromagnetic force Mf and the support force N of the pier slide rail, the rotating unit 6 rotates, and the rotating process causes the guide beam body 19 to continuously lift.

[0127] Figure 19 For a certain state of the rotating unit 6 when rotating, the rotating unit 6 is constrained by the pier slide rail 11, the pressure sensor 10 is subjected to pressure, and signals are transmitted to the central control device. The central control device controls the current in the electromagnet assembly 4 to continuously increase, the magnetic force is increased to a certain value, and under the action of the horizontal thrust F, the electromagnetic force Mf and the support force N of the pier slide rail, the rotating unit 6 rotates, and the rotating process causes the guide beam body 19 to continuously lift.

[0128] Figure 20 For the state that the guide beam body 19 successfully reaches the pier 24, the jacking continues to move forward.

[0129] Figure 21 For the state that the rotating unit 6 is still on the pier 24, the electromagnet assembly 4 absorbs the rotating unit 6.

[0130] Figure 22 For the state that the rotating unit 6 has left the pier 24, the pressure sensor 10 has no force, the signal is transmitted to the central control device, the current in the electromagnet assembly 4 is gradually reduced to zero, and the magnetic force is gradually reduced to zero. To ensure that the rotating unit 6 slowly rotates back to the initial position before the pier 24 under the action of the gravity G of the rotating unit and the electromagnetic force Mf, refer to Figure 6 .

[0131] Figure 23 and Figure 24 For the state diagram when the rotating unit 6 slowly rotates to restore to the initial position before the pier 24 under the action of the gravity G of the rotating unit and the electromagnetic force Mf.

[0132] Figure 24 For the state diagram when the rotating unit 6 successfully restores to the initial position before the pier 24.

[0133] The above description of the embodiments is for the convenience of those skilled in the art to understand and use the invention. Those skilled in the art can easily make various modifications to these embodiments, and apply the general principles described herein to other embodiments without creative labor. Therefore, the present application is not limited to the above embodiments, and improvements and modifications made by those skilled in the art without departing from the scope of the present application should be within the scope of the present application.

Claims

1. A rotatable guide beam, characterized in that, The guide beam body (19) is provided with two front end units (1) at the front end, the front end unit (1) comprises a rotating shaft (3), a first side plate (20) and a second side plate (21), the rotating shaft (3) is arranged between the first side plate (20) and the second side plate (21), and the rotating shaft (3) is rotationally connected with the rotating unit (6). The rotating unit (6) comprises a through hole (25), a connecting shaft (8), a third side plate (22) and a fourth side plate (23), the third side plate (22) and the fourth side plate (23) are connected through the connecting shaft (8), the third side plate (22) and the fourth side plate (23) are provided with the through hole (25), and the two through holes (25) are rotationally connected with the rotating shaft (3) respectively. The first side plate (20) and the second side plate (21) are reverse "Z" type side plates.

2. A rotatable girder according to claim 1, wherein A plurality of stiffening plates (2) are arranged on the first side plate (20) and the second side plate (21), and the stiffening plates (2) are vertically arranged on the first side plate (20) and the second side plate (21).

3. A rotatable girder according to claim 1, wherein The third side plate (22) and the fourth side plate (23) are made of steel.

4. A rotatable girder according to claim 1, wherein An electromagnet assembly (4) is arranged above the first side plate (20) and the second side plate (21), the current of the electromagnet assembly (4) is controllable, and the electromagnet assembly (4) is used for generating a magnetic force on the third side plate (22) and the fourth side plate (23) of the rotating unit (6). A pressure sensor (10) is arranged at the side end of the third side plate (22) and the fourth side plate (23), the pressure sensor (10) is electrically connected with the electromagnet assembly (4), the pressure sensor (10) is used for sending a collected pressure signal to a central control device, the central control device controls the current of the electromagnet assembly (4), so as to control the magnetic force provided by the electromagnet assembly (4).

5. A rotatable girder according to claim 4, wherein A rubber pad (9) is arranged below the third side plate (22) and the fourth side plate (23). A pad (7) is arranged in the through hole (25). Three connecting shafts (8) are arranged between the third side plate (22) and the fourth side plate (23). The guide beam comprises two pier slide rails (11) and the rotatable guide beam as claimed in any one of claims 1-5, 6. A push-pull guide beam pushing device characterized by Each pier slide rail (11) comprises a base (14), a roller rotating shaft and a roller (12), the base (14) is fixed to a pier (24) at the bottom end, the base (14) is provided with the roller rotating shaft at the top end, and the roller (12) rotates around the roller rotating shaft. When the rotatable guide beam passes the pier (24), the third side plate (22) and the fourth side plate (23) of the rotating unit (6) of the rotatable guide beam are in contact with the roller (12) of the pier slide rail (11). When the rotating unit (6) is in contact with the pier slide rail (11), the pressure sensor (10) is in contact with the roller (12).

7. A push-pull guide beam pushing device according to claim 6, wherein The pier slide rail (11) further comprises a track (13), a base (14) and a cover plate (15).

8. A tractor spud jacking device according to claim 7, wherein, ​ The cover plate (15) is a "few" shaped cover plate, the middle bottom surface of the cover plate (15) is connected with the top surface of the base (14), the two end bottom surfaces of the cover plate (15) are fixed on the top surface of the pier (24), the base (14) is fixed on the pier (24) through the cover plate (15), and a plurality of rollers (12) are fixed above the base (14), and the plurality of rollers (12) are connected through the track (13).

9. A push-pull guide beam pushing device according to claim 8, wherein The top surface of the pier (24) is provided with a plurality of cylindrical holes, the cylindrical holes are used for placing screw sleeves (17), and the cover plate (15) is provided with a plurality of screws (16), the screws (16) are fixed in the screw sleeves (17), so that the cover plate (15) is fixed on the pier (24). The screw sleeve (17) is provided with a threaded space at the center, and the threaded space is used for installing the screw (16); and the screw sleeve (17) is provided with a groove (18) on the side surface.

10. A method of automatically launching a guide beam onto a pier, the method comprising: The specific steps of the drag guide beam pushing device are as follows: S1, the guide beam body (19) is installed at the front end of the main beam, the rotating unit (6) is connected with the front end unit (1) perpendicularly, and the electromagnet assembly (4) is installed above the rotating unit (6); S2, the screw sleeve (17) is installed in the cylindrical hole reserved on the top surface of the pier (24), and the concrete is poured between the inner wall of the cylindrical hole and the outer wall of the screw sleeve (17); S3, the two pier slide rails (11) are symmetrically installed on the top of the pier (24) on both sides; S4, when the rotating guide beam is on the pier (24), the pressure sensor (10) of the third side plate (22) and the fourth side plate (23) of the rotating unit (6) is connected with the roller (12), the pressure sensor (10) sends the collected signal to the central control equipment, the central control equipment controls the current of the electromagnet assembly (4) to increase continuously, so that the magnetic force is enhanced; S5, when the magnetic force is enhanced to a certain value, the rotating unit (6) rotates under the action of the horizontal thrust (F), the electromagnetic force (Mf) and the support force (N) of the pier slide rail, so that the guide beam body (19) is lifted; S6, when the guide beam body (19) is parallel to the pier (24), the guide beam body (19) successfully goes up the pier (24), and the horizontal thrust F controls the guide beam body (19) to continue to move forward; S7, when the rotating unit (6) leaves the pier (24), the pressure sensor (10) transmits the signal of no force to the central control equipment, the central control equipment controls the current of the electromagnet assembly (4) to gradually decrease to zero, the magnetic force gradually decreases to zero, and the rotating unit (6) slowly rotates from the horizontal state to the initial vertical state.

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