A launching device for steel beam construction and a launching method thereof

Abstract

The application relates to the technical field of pushing equipment, and particularly discloses a pushing equipment for steel beam construction and a pushing method thereof, which comprises front and rear pushing members, left and right pushing members and a lifting pushing member. The lifting pushing member comprises a lifting platform and a hydraulic lifting rod used for driving the lifting platform to lift. A supporting block is slidably arranged on the lifting platform. A rotating member is arranged on the left side of the supporting block. An elastic member is arranged between the rotating member and the lifting platform to keep the rotating member in an inclined state. When the supporting block slides to the left, the supporting block abuts against the rotating member and drives the rotating member to rotate counterclockwise. When the rotating member rotates counterclockwise, the upper end of the rotating member moves upwards and lifts the steel beam. The bottom of the lifting platform is provided with a guide member used for moving the lifting platform up and down. The guide member is provided with a locking member used for limiting the downward movement of the lifting platform. The application can adjust the steel beam with small displacement. When the displacement of the steel beam is large, the lifting platform is locked to avoid damage of the lifting pushing member.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of pushing equipment, and particularly relates to a pushing equipment for steel beam construction and a pushing method thereof. BACKGROUND

[0002] In the construction of modern bridges, terminals, stadiums and other large infrastructure, large-span steel beam structures are generally used. Due to the construction environment often crossing traffic arteries, deep valleys, rivers or existing building lines, it is impossible to use traditional large hoisting equipment for direct installation. Under such restricted conditions, the incremental launching construction method has become the mainstream solution due to its unique advantages. The core principle of this method is to assemble the segments or manufacture the whole at the steel beam assembly site, and then push the steel beam forward horizontally by the pushing equipment system, and gradually position it to the design coordinate. The pushing equipment is the key executive mechanism of the incremental launching construction method, and its performance directly determines the safety, efficiency, accuracy and feasibility of the construction. At present, the commonly used pushing equipment at home and abroad is mainly based on the hydraulic crawling pushing system. This system is usually composed of lifting cylinders, translation cylinders, clamping devices and hydraulic pump station control systems. Through the cycle steps of "lifting-pushing-landing-retracting", the steel beam advances intermittently.

[0003] A heavy steel beam pushing equipment is disclosed in Chinese patent document CN113668400B, which comprises a base, a fixed support table, a movable support table, a stabilizing mechanism and an auxiliary mechanism. The base is symmetrically provided with telescopic jacks, the other ends of which are arranged at the bottom end of the fixed support table, and the fixed support table is symmetrically provided with telescopic push rods on one side. For the heavy steel beam pushing device designed in this patent, when performing the lifting and horizontal pushing and conveying work, the stabilizing mechanism is arranged to ensure good stability of the steel beam during conveying work, thereby avoiding position deviation and improving the installation and construction accuracy of the steel beam, thereby facilitating construction. The auxiliary mechanism is arranged to provide a reinforcing auxiliary effect on the stabilizing mechanism, further improving the stability of the steel beam pushing work, improving the construction quality and ensuring the work progress.

[0004] In the above technical solution, the stabilizing mechanism is arranged to ensure good stability of the steel beam during conveying work, thereby avoiding position deviation and improving the installation and construction accuracy of the steel beam, thereby facilitating construction. The auxiliary mechanism is arranged to provide a reinforcing auxiliary effect on the stabilizing mechanism, thereby improving the stability of the steel beam pushing work. However, if the lifting heights of the pushing equipment on both sides of the steel beam are different, causing the steel beam to deviate, the position of the steel beam after deviation cannot be adjusted. SUMMARY

[0005] The application provides a pushing device for steel beam construction and a pushing method thereof, and aims to solve the problem that the position of the steel beam after deviation cannot be adjusted in the prior art.

[0006] The pushing device for steel beam construction comprises front and rear pushing members, left and right pushing members and a lifting pushing member, the lifting pushing member comprises a lifting platform and a hydraulic lifting rod for driving the lifting platform to lift, a support block is slidably arranged on the lifting platform, a rotating member is arranged on the left side of the support block, an elastic member is arranged between the rotating member and the lifting platform to keep the rotating member in an inclined state, the support block is abutted against the rotating member when sliding to the left and makes the rotating member rotate counterclockwise, the upper end of the rotating member moves upward when the rotating member rotates counterclockwise, thereby lifting the steel beam, the bottom of the lifting platform is provided with a guide member for moving the lifting platform up and down, the guide member is provided with a locking member for limiting the downward movement of the lifting platform, the locking member comprises locking teeth and a locking block, the locking block is slidably arranged on the guide member in the left and right directions, the locking teeth are in contact with the locking block when the support block slides to the left, thereby locking the guide member.

[0007] The effect is that when the steel beam is lifted, the front and rear pushing members, the left and right pushing members and the lifting pushing member push the steel beam to move, when the steel beam slides to one side, the support block is in contact with the rotating member and pushes the rotating member to rotate, thereby lifting one end of the steel beam, avoiding continuous sliding of the steel beam, when the steel beam slides to one side by a large distance, the pressure on one end of the steel beam increases, the support block pushes the locking block into the locking teeth, thereby locking the guide member on the lifting platform, avoiding that the pressure of the steel beam on one side of the hydraulic lifting rod is too large to damage the hydraulic lifting rod, when the side with increased pressure rises, the support block resets and the locking block is separated from the locking teeth, so that the lifting pushing member can be lowered to push the steel beam to the predetermined position.

[0008] Preferably, the lifting platform comprises a platform surface and a scissors linkage assembly, the scissors linkage assembly comprises two groups of cross-shaped linkages, each end of each linkage is provided with a limiting block, the bottom of the platform surface is provided with two groups of upper limiting grooves, the upper end surface of the base is provided with two groups of lower limiting grooves, the limiting block at the upper end of the linkage is slidably arranged in the upper limiting groove, the limiting block at the lower end of the linkage is slidably arranged in the lower limiting groove, and the two linkages in the same group are hinged with a limiting pin; when the hydraulic lifting rod rises, the hydraulic lifting rod lifts the platform surface, at this time, the limiting blocks at the upper and lower ends of the linkages slide in the upper and lower limiting grooves respectively, so that the left and right sides of the lifting platform realize synchronous lifting, the limiting pin is guided by the guide member to slide in the vertical direction, thereby enabling the lifting platform to smoothly slide in the up and down directions.

[0009] Preferably, the top of the table top is provided with two front and rear sliding grooves, two left and right support blocks are slidingly arranged in each sliding groove, the left side of each support block is provided with an inclined table, the inclined table on the left side of the support block is inclined downward from left to right, the inclined table on the right side of the support block is inclined upward from left to right, the included angle between the inclined surface of the inclined table and the horizontal plane is A, and the angle A is between 1 degree and 5 degrees; when the steel beam slides to the left, the steel beam will slide to the left synchronously with the support block, if the offset distance of the steel beam is small, when the support block slides to the inclined table, the steel beam will be lifted upward if it slides to the left on the inclined table due to the inclined arrangement of the inclined table, so that the steel beam stops sliding.

[0010] Preferably, the base is provided with two front and rear guide members, the guide member comprises a vertically arranged mounting plate, the mounting plate is provided with a vertically arranged guide groove, and a limiting pin is slidingly arranged in the guide groove; when the hydraulic lifting rod drives the lifting table to rise, the lifting table slides in the vertical direction, the limiting pin can slide along the guide groove by arranging the guide member, so that the two connecting rods in the same group can rotate synchronously, thereby lifting the table top synchronously.

[0011] Preferably, the rotating member is located on the left side of the support block, the rotating member comprises a rotating rod, an upper connecting block and a lower connecting block, the upper connecting block is hingedly connected to the upper end of the rotating rod, the lower connecting block is hingedly connected to the lower end of the rotating rod, the upper top surface of the upper connecting block can abut against the bottom of the steel beam to increase the friction between the upper connecting block and the steel beam; when the steel beam is subjected to the pushing operation, a plurality of pushing devices are generally arranged on the bottom of the steel beam, the pushing device in the application is arranged on the left side of the steel beam, and the steel beam is taken as an example in the case of leftward deviation, when the steel beam deviates to the left, the support block slides to the left, and in the process of leftward sliding of the support block, the support block contacts and abuts against the lower connecting block, thereby rotating the rotating rod counterclockwise, at this time, the upper connecting block is lifted upward to lift the steel beam as a whole upward. At this time, the left end of the steel beam is lifted, thereby avoiding continuous leftward sliding of the steel beam.

[0012] Preferably, the rotating rod is fixedly provided with a rotating shaft, the rotating shaft is rotationally arranged on the table top, the distance between the rotating shaft and the top of the rotating rod is L1, the distance between the rotating shaft and the bottom of the rotating rod is L2, and the length ratio of L1 to L2 is greater than 1:3; when the support block contacts the lower connecting block, the support block pushes the rotating rod to rotate counterclockwise; since the length of L2 is greater than the length of L1, the rotating rod forms a lever, and the pushing force of the bottom of the rotating rod transmitted to the top of the rotating rod is amplified; when the steel beam is placed on the support block, the upper end of the upper connecting block is close to the bottom of the steel beam. When the support block rotates counterclockwise, the upper connecting block abuts against the bottom of the steel beam and pushes the steel beam upward, and after the left side of the steel beam is lifted, the steel beam can avoid continuous leftward sliding.

[0013] Preferably, the elastic member is a torsion spring, the torsion spring is sleeved on the rotating shaft, one end of the torsion spring is connected to the rotating shaft, and the other end is connected to the table top; when the lifting platform does not lift the steel beam upward, the rotating rod is maintained in an inclined state by the torsion spring. The angle of the rotating rod inclination can ensure that when the support block is in contact with the steel beam, there is a certain distance between the upper end surface of the rotating block and the bottom of the steel beam. When the rotating rod rotates counterclockwise by a certain angle, the torsion spring is energized; when the rotating rod rotates clockwise by a certain angle, the rotating rod resets under the action of the torsion spring.

[0014] Preferably, the end of the inclined table away from the support block is provided with an alarm device, and the alarm device is signal connected with the hydraulic lifting rod; when the steel beam slides to the left by a large angle, the support block moves to the left until it contacts the alarm device, triggering the alarm device to issue an alarm, at this time, the operator should stop lifting the steel beam, which may be due to the failure of the entire jacking system, causing the lifting driving members arranged on the left and right sides of the steel beam to have different driving speeds, resulting in a lower jacking height on the left side, and the overall steel beam shifts to the left. At this time, the operator needs to correct the jacking equipment so that the lifting driving member on the left side rises to the same height as the right side to avoid lateral sliding of the steel beam, and even cause construction accidents.

[0015] Preferably, the locking tooth includes a plate body and locking teeth, the plate body is fixedly arranged on the limiting pin and slides along the guide groove, the locking teeth are distributed along the length direction of the plate body, the mounting plate is provided with a left-right direction mounting groove, the locking block includes a mounting block, a locking head and a return spring, the mounting block is slidingly arranged in the mounting groove along the left-right direction, the locking head is fixedly arranged on the left side of the mounting block, the return spring is sleeved on the sliding block, one end of the return spring abuts against the mounting plate, and the other end is connected to the sliding block, and the locking tooth and the locking head are both right-angled triangles; when the sliding block is pushed to translate to the left, the return spring is compressed, the sliding block slides to the left along the mounting groove, the locking head enters the gap between the locking teeth, and the straight edge of the locking head is opposite to the straight edge of the upper locking tooth, thereby preventing the locking tooth from descending. Since the locking tooth is fixedly arranged on the limiting pin, the limiting pin cannot slide downward, thereby limiting the downward sliding of the lifting platform. When the locking head enters the gap between the locking teeth, the support block triggers the alarm device. After the operator adjusts the lifting driving member and the height of the left side of the steel beam is raised, the overall steel beam slides to the right, the support block is separated from the inclined table, the rotating rod resets under the action of the torsion spring, and the locking head resets under the action of the return spring. At this time, the locking head is separated from the gap between the locking teeth. When the hydraulic lifting rod descends, the steel beam can descend with the hydraulic lifting rod, and the jacking of the steel beam is completed.

[0016] A jacking method for steel beam construction, using the steel beam jacking equipment, including the following steps:

[0017] Step one, the pushing device is placed at the bottom of the steel beam, and the position of the pushing device is adjusted, the steel beam is lifted by the lifting pusher, and the front and rear positions of the steel beam are adjusted by the front and rear pushers, and the left and right positions of the steel beam are adjusted by the left and right pushers;

[0018] Step two, if the lifting speed of the lifting pusher placed on the left and right sides of the steel beam during the steel beam lifting process is different, causing the steel beam to slide to one side, the support block slides to the side and rotates the rotating rod, and the steel beam is lifted by the rotation of the rotating rod to avoid the steel beam from sliding;

[0019] Step three, if the lifting height of the lifting pusher placed on the left and right sides of the steel beam is greatly different, the steel beam slides to one side to trigger the alarm device, and the operator adjusts the lifting height of the lifting pusher on the side to make the lifting height on the side rise, so as to avoid the continuous lifting to cause greater difference between the lifting heights on the left and right sides;

[0020] Step four, when the steel beam moves to one side to trigger the alarm device, the support block moves with the steel beam and drives the locking block to be clamped into the locking teeth to lock the lifting platform, so as to avoid the steel beam from rolling over when the hydraulic lifting rod on the side is damaged due to the steel beam sliding to one side;

[0021] Step five, after the steel beam triggers the alarm device, the operator adjusts the height of the hydraulic lifting rod to make the support block and the steel beam slide to the other side, so as to restore the steel beam to the horizontal state and avoid side sliding;

[0022] Step six, the front and rear directions of the steel beam are adjusted by the front and rear pushers, the left and right directions of the steel beam are adjusted by the left and right pushers, and finally the steel beam is lowered to the predetermined position by the lifting pusher.

[0023] When the steel beam is pushed, if the steel beam slides with a small displacement, the rotating member is rotated by the support block to lift the steel beam, when the steel beam slides with a large distance, the guide member is locked by the locking member to avoid the hydraulic lifting rod on the sliding side from being damaged due to the pressure, so as to avoid the lifting platform from continuing to descend, the height of the steel beam is adjusted, the support block is reset to make the locking block disengage from the locking teeth, so that the hydraulic lifting member can be lowered, and then the steel beam falls back to the predetermined position.

[0024] By adopting the above technical scheme, the application has the following advantages:

[0025] 1. When the pushing operation is carried out, the pushing device is placed at the bottom of the steel beam, the steel beam is lifted by the hydraulic lifting rod, and the position of the steel beam is adjusted by the front and rear pushing members and the left and right pushing members. When the steel beam and the supporting block slide to one side, if the steel beam slides to the left with a small distance, an inclined table can be arranged in the sliding groove, so that the steel beam can stop on the inclined table when it slides to one side. When the steel beam abuts against the right side of the rotating member, the rotating member itself constitutes a lever, and when the rotating member is deflected counterclockwise, the steel beam can be lifted, thereby avoiding the steel beam from sliding to the left. At this time, the height of the lifting pushing members on both sides does not need to be adjusted;

[0026] 2. If the steel beam slides to the left with a large distance, when the steel beam slides to the left, the pressure exerted by the steel beam on the left pushing device will increase. In order to prevent the left lifting pushing member from being damaged and causing an accident, when the steel beam slides to the left, the supporting block will drive the locking block into the locking teeth, thereby locking the guide member on the lifting table. When the lifting pushing member is damaged, the lifting table will suddenly drop, causing the steel beam to directly fall. When the steel beam slides to the left with a large distance, the supporting block will contact the alarm device, thereby triggering the alarm device. At this time, the operator needs to adjust the height of the hydraulic lifting rods on both sides to restore the steel beam to the horizontal state. When the steel beam slides to the right, the locking block will be separated from the locking teeth, and the hydraulic lifting rod can be lowered to make the steel beam fall to the predetermined position. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0028] Figure 2 It is a schematic diagram of the structure of the lifting table, the hydraulic lifting rod and the supporting block of the present application.

[0029] Figure 3 It is a schematic diagram of the structure of the rotating member, the guide member and the locking member of the present application.

[0030] Figure 4 It is a schematic diagram of the top view structure of the present application.

[0031] Figure 5 It is a schematic diagram of the structure of the rotating member of the present application.

[0032] Figure 6 It is a schematic diagram of the position of the inclined surface and the alarm device on the table surface of the present application.

[0033] Reference signs:

[0034] 1, front and back pushing member; 2, left and right pushing member; 3, lifting pushing member; 31, lifting platform; 311, table top; 312, scissor linkage assembly; 313, base; 32, hydraulic lifting rod; 33, supporting block; 34, rotating member; 341, rotating rod; 342, upper connecting block; 343, lower connecting block; 344, rotating shaft; 35, elastic member; 36, inclined surface; 4, guide member; 41, mounting plate; 42, guide groove; 5, locking member; 51, locking tooth; 511, plate body; 512, locking tooth; 52, locking block; 521, mounting block; 522, locking head; 523, return spring; 6, alarm device. DETAILED DESCRIPTION

[0035] Embodiments of the present application are described in detail below with reference to examples illustrated in the accompanying drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.

[0036] As shown in the drawings, Figures 1-6 A pushing device for steel beam construction includes front and back pushing member 1, left and right pushing member 2, and lifting pushing member 3, lifting pushing member 3 includes lifting platform 31 and hydraulic lifting member; when lifting the steel beam, the front and back pushing member 1 drives the steel beam to move in the front and back direction, the left and right pushing member 2 drives the steel beam to move in the left and right direction, and the lifting pushing member 3 drives the steel beam to move in the up and down direction.

[0037] The pushing device includes a base 313, the front and back pushing member 1 is two front and back hydraulic pushing rods arranged on the left and right sides of the base 313, the front and back pushing member 1 is installed on the movable end of the front and back hydraulic pushing rod, the front and back pushing member 1 is a front and back hydraulic pushing rod, the lifting pushing rod is installed on the movable end of the front and back pushing member 1, the lifting pushing rod is a hydraulic lifting rod 32, and the lifting platform 31 is lifted by the hydraulic lifting rod 32.

[0038] The lifting platform 31 is provided with two front and back sliding grooves, and two left and right supporting blocks 33 are slidingly arranged in each sliding groove, when the lifting platform 31 is lifted, the supporting blocks 33 contact the steel beam and lift the steel beam, when the steel beam is offset, the supporting blocks 33 slide in the direction of the offset of the steel beam, for example, when the steel beam is offset to the left, the supporting blocks 33 slide to the left.

[0039] Specifically, the lifting platform 31 comprises a platform 311 and a scissor linkage assembly 312, the scissor linkage assembly 312 comprises two groups of cross X-shaped linkages, each end of the linkages is provided with a limiting block, the bottom of the platform 311 is provided with two groups of upper limiting grooves, the upper end surface of the base 313 is provided with two groups of lower limiting grooves, the limiting blocks at the upper ends of the linkages are slidingly arranged in the upper limiting grooves, the limiting blocks at the lower ends of the linkages are slidingly arranged in the lower limiting grooves, and the two linkages of the same group are hingedly connected with a limiting pin; when the hydraulic lifting rod 32 rises, the hydraulic lifting rod 32 jacks up the platform 311, at this time, the limiting blocks at the upper and lower ends of the linkages are slidingly arranged in the upper limiting grooves and the lower limiting grooves respectively, so that the lifting platform 31 on the left and right sides is synchronously lifted, the limiting pin is guided through the guide, the limiting pin slides in the vertical direction, and then the lifting platform 31 can slide in the up-down direction.

[0040] In order to make the lifting platform 31 slide in the up-down direction, two guide pieces 4 are arranged on the base 313, the guide piece 4 comprises a mounting plate 41 arranged vertically, the mounting plate 41 is provided with a guide groove 42 in the up-down direction, and the limiting pin is slidingly arranged in the guide groove 42; when the hydraulic lifting rod 32 drives the lifting platform 31 to rise, the lifting platform 31 slides in the up-down direction, the limiting pin slides along the guide groove 42 through the arrangement of the guide piece 4, so that the two linkages of the same group can synchronously rotate, and then synchronously lift the platform 311.

[0041] The platform 311 is provided with a rotating piece 34 which is arranged on the left side of the supporting block 33, the rotating piece 34 comprises a rotating rod 341, an upper connecting block 342 and a lower connecting block 343, the upper connecting block 342 is hingedly connected to the upper end of the rotating rod 341, the lower connecting block 343 is hingedly connected to the lower end of the rotating rod 341, and the elastic piece 35 is arranged between the rotating rod 341 and the platform 311 to make the rotating rod 341 keep an inclined state under no external force; when the steel beam is jacked, a plurality of jacking devices are usually arranged at the bottom of the steel beam, for example, the jacking device is arranged on the left side of the steel beam and the steel beam deviates to the left, and the present application is described as an example; when the steel beam deviates to the left, the supporting block 33 slides to the left, and the supporting block 33 contacts and abuts on the lower connecting block 343 when the supporting block 33 slides to the left, so that the rotating rod 341 rotates counterclockwise, at this time, the upper connecting block 342 rises upward and lifts the whole steel beam upward, at this time, the left end of the steel beam is lifted, and then the steel beam is prevented from continuously sliding to the left.

[0042] In order to obtain sufficient lifting force on the left side of the steel beam, the rotating shaft 344 is fixedly arranged on the rotating rod 341, the rotating shaft 344 is rotatably arranged on the table top 311, the distance between the rotating shaft 344 and the top of the rotating rod 341 is L1, the distance between the rotating shaft 344 and the bottom of the rotating rod 341 is L2, the length ratio of L1 and L2 is greater than 1:3, when the supporting block 33 is in contact with the lower connecting block 343, the supporting block 33 pushes the rotating rod 341 to rotate counterclockwise, because the length of L2 is greater than the length of L1, the rotating rod 341 forms a lever, when the pushing force of the bottom of the rotating rod 341 is transmitted to the top of the rotating rod 341, the pushing force is amplified, when the steel beam is placed on the supporting block 33, the upper end of the upper connecting block 342 is close to the bottom of the steel beam, when the supporting block 33 rotates counterclockwise, the upper connecting block 342 abuts against the bottom of the steel beam, and the steel beam is pushed upward, after the left side of the steel beam is lifted, the steel beam can be prevented from sliding to the left again.

[0043] Because the upper connecting block 342 is hinged on the rotating rod 341, when the rotating rod 341 rotates, the upper top surface of the upper connecting block 342 can abut against the bottom of the steel beam, the contact surface of the steel beam is increased, the friction force of the steel beam is increased, auxiliary friction force is provided between the steel beam and the supporting block 33, and the steel beam can be prevented from being separated from the upper connecting block 342 when sliding to the left, the lower connecting block 343 is hinged on the rotating rod 341, when the rotating rod 341 rotates, the right end surface of the lower connecting block 343 abuts against the supporting block 33, the left side of the supporting block 33 has a pushing block penetrating downward through the table top 311, when the supporting block 33 moves to the left, the pushing block is in contact with the lower connecting block 343, and the rotating rod 341 is pushed to rotate.

[0044] The elastic element 35 is installed between the rotating shaft 344 and the table top 311, the elastic element 35 is a torsion spring, the torsion spring is sleeved on the rotating shaft 344, one end of the torsion spring is connected to the rotating shaft 344, and the other end of the torsion spring is connected to the table top 311; when the lifting platform 31 does not lift upward to lift the steel beam, the rotating rod 341 is kept in an inclined state through the torsion spring, the angle of the inclined rotating rod 341 is such that when the supporting block 33 is in contact with the steel beam, the upper end surface of the upper rotating block has a certain distance from the bottom of the steel beam, when the rotating rod 341 rotates counterclockwise by a certain angle, the torsion spring is charged, and when the rotating rod 341 rotates clockwise by a certain angle, the rotating rod 341 is reset under the action of the torsion spring.

[0045] Specifically, the left side of each support block 33 is provided with an inclined table, the inclined table on the left side of the support block 33 is inclined downward from left to right, and the inclined table on the right side of the support block 33 is inclined upward from left to right. The angle between the inclined surface 36 of the inclined table and the horizontal plane is A, and the angle A is between 1 degree and 5 degrees. When the steel beam slides to the left, the steel beam slides to the left synchronously with the support block 33. If the steel beam is not seriously deviated, when the support block 33 slides to the inclined table, the steel beam is lifted upward if it slides to the left to the inclined table, so as to stop the steel beam from sliding.

[0046] The end of the inclined table away from the support block 33 is provided with an alarm device 6, the model of the alarm device 6 is XB2-BS542, and the alarm device is signal connected with the hydraulic lifting rod 32. When the steel beam slides to the left at a relatively large angle, the support block 33 moves to the left to contact and trigger the alarm device to alarm. At this time, the operator stops continuing to jacking the steel beam. At this time, the whole jacking system may be faulty, causing the pushing speed of the lifting pushers 3 arranged on the left and right sides of the steel beam to be inconsistent, causing the jacking height on the left side to be insufficient, and the steel beam to be deviated to the left as a whole. At this time, the operator corrects the jacking equipment, so that the lifting height of the lifting pusher 3 on the left side is consistent with the lifting height of the lifting pusher 3 on the right side, so as to avoid the steel beam from sliding sideways, and even avoid construction accidents.

[0047] When the steel beam deviates to the left, the pressure of the steel beam on the left hydraulic lifting rod 32 as a whole will increase. To avoid damage to the left hydraulic lifting rod 32 due to increased pressure, a locking piece 5 for limiting the descent of the lifting platform 31 is arranged on the lifting platform 31. When the steel beam slides to the left to slide the support block to a certain distance, the locking piece 5 locks the lifting platform 31. At this time, even if the hydraulic lifting rod 32 is damaged, the lifting platform 31 is locked under the action of the locking piece 5, so as to avoid the descent of the lifting platform 31. It should be noted that the locking piece 5 locks the lifting platform 31 in one direction, and the lifting platform 31 can be lifted under the pushing of the hydraulic lifting rod 32.

[0048] The locking piece 5 comprises a locking tooth 51 and a locking block 52, the locking tooth 51 is slidably arranged on the guide piece 4 in the left-right direction and is resettable, the locking tooth 51 comprises a plate body 511 and locking teeth 512, the plate body 511 is fixedly arranged on the limiting pin and slides along the guide groove 42, the locking teeth 512 are distributed along the length direction of the plate body 511, the mounting plate 41 is provided with a mounting groove in the left-right direction, the locking block 52 comprises a mounting block 521, a locking head 522 and a reset spring 523, the mounting block 521 is slidably arranged in the mounting groove in the left-right direction, the locking head 522 is fixedly arranged on the left side of the mounting block 521, the reset spring 523 is sleeved on the sliding block, one end of the reset spring 523 abuts against the mounting plate 41, and the other end is connected to the sliding block, the locking teeth 512 and the locking head 522 are all right-angled triangles, when the sliding block is pushed to move leftwards, the reset spring 523 is compressed, the sliding block slides leftwards along the mounting groove, the locking head 522 enters between the locking teeth 512, the straight edge of the locking head 522 is opposite to the straight edge of the locking tooth 512 above, thereby avoiding the locking tooth 512 from descending, since the locking tooth 51 is fixedly arranged on the limiting pin, the limiting pin can be prevented from sliding downwards, thereby limiting the lifting platform 31 from sliding downwards, when the locking head 522 enters between the locking teeth 512, the support block 33 can trigger the alarm device, after the height of the left side of the steel beam is increased by the operation personnel adjusting the lifting pushing piece 3, the steel beam as a whole slides rightwards to make the support block 33 disengage from the inclined table, the rotating rod 341 is reset under the action of the torsional spring, the locking head 522 is reset under the action of the reset spring 523, at this time, the locking head 522 disengages from between the locking teeth 512, when the hydraulic lifting rod 32 descends, the steel beam can descend along the hydraulic lifting rod 32, and the pushing of the steel beam is completed.

[0049] The rotating rod 341 is arranged between the two support blocks 33 of the same sliding groove, the rotating rod 341 is provided with a pushing rod penetrating downwards, the sliding block is provided with a pad, the table top 311 is provided with a penetrating groove, and the pushing rod is slidably arranged in the penetrating groove; when the support block 33 slides leftwards, the rotating rod 341 slides leftwards along with the support block 33, and the pad is pushed leftwards by the pushing rod.

[0050] A pushing method for steel beam construction, using the steel beam pushing device, comprising the following steps:

[0051] Step one, place the pushing device at the bottom of the steel beam, adjust the position of the pushing device, lift the steel beam by the lifting pushing piece, adjust the position of the steel beam before and after by the front and rear pushing piece 1, and adjust the position of the steel beam left and right by the left and right pushing piece 2;

[0052] Step two, if the lifting speed of the lifting pushers 3 placed on both sides of the steel beam during the lifting process of the steel beam is different, causing the steel beam to slide to one side, the support block 33 slides to that side and makes the rotating rod 341 rotate, and the steel beam is lifted through the rotation of the rotating rod 341 to avoid the sliding of the steel beam;

[0053] Step three, if the lifting height of the lifting pushers 3 placed on both sides of the steel beam is greatly different, the steel beam slides to one side to trigger the alarm device 6, and the operator adjusts the lifting height of the lifting pushers 3 on that side to make the lifting height on that side rise, avoiding the continuous lifting to cause a greater difference in the lifting height on both sides;

[0054] Step four, when the steel beam moves to one side to trigger the alarm device 6, the support block 33 moves with the steel beam and drives the locking block 52 to be clamped into the locking teeth 51, locking the lifting platform 31, avoiding the damage of the hydraulic lifting rod 32 on that side when the steel beam slides to one side, causing the steel beam to overturn;

[0055] Step five, after the steel beam triggers the alarm device 6, the operator adjusts the height of the hydraulic lifting rod 32 to make the support block 33 and the steel beam slide to the other side, so that the steel beam returns to the horizontal state to avoid sliding;

[0056] Step six, the front and rear directions of the steel beam are adjusted by the front and rear pushers 1, the left and right directions of the steel beam are adjusted by the left and right pushers 2, and finally the steel beam is lowered to the predetermined position by the lifting pushers 3.

[0057] Working principle:

[0058] When the pushing operation is performed, the pushing device is placed at the bottom of the steel beam, the steel beam is lifted by the hydraulic lifting rod 32, the position of the steel beam is adjusted by the front and rear pushing member 1 and the left and right pushing member 2, when the steel beam and the supporting block 33 slide to one side, if the steel beam slides to the left by a small distance, the steel beam can be stopped on the inclined table in the sliding groove when it slides to one side, the steel beam abuts against the right side of the rotating member 34, the rotating member 34 is deflected counterclockwise to lift the steel beam due to the lever formed by the rotating member 34 itself, and the steel beam is prevented from sliding to the left, at this time, the height of the lifting pushing member 3 on both sides does not need to be adjusted; if the steel beam slides to the left by a large distance, when the steel beam slides to the left, the pressure of the pushing device on the left side of the steel beam increases, in order to avoid damage to the lifting pushing member 3 on the left side and cause an accident, when the steel beam slides to the left, the supporting block 33 drives the locking block 52 to enter between the locking teeth 51, and then the guide 4 on the lifting platform 31 is locked, after the lifting pushing member 3 is damaged, the lifting platform 31 is prevented from suddenly falling to cause the steel beam to directly fall; when the steel beam slides to the left by a large distance, the supporting block 33 contacts the alarm device to trigger the alarm device, at this time, the operator adjusts the height of the hydraulic lifting rod 32 on both sides to make the steel beam return to the horizontal state, the steel beam slides to the right, the locking block 52 is separated from between the locking teeth 51, and the hydraulic lifting rod 32 can be lowered to make the steel beam fall on the predetermined position.

[0059] Although the embodiments of the present application have been shown and described above, it should be understood by those skilled in the art that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A jacking device for steel beam construction, comprising: The front-to-back pushing member, the left-to-right pushing member, and the lifting pushing member are characterized in that: The lifting pusher includes a lifting platform and a hydraulic lifting rod for driving the lifting platform to rise and fall. A support block is slidably arranged on the lifting platform to the left and right. A rotating component is arranged on the left side of the support block. An elastic component is arranged between the rotating component and the lifting platform to keep the rotating component in an inclined state. The bottom of the lifting platform is provided with a guide for moving the lifting platform up and down. The guide is provided with a locking component for restricting the downward movement of the lifting platform. The locking component includes locking teeth and locking blocks. The locking blocks are slidably disposed on the guide in the left and right direction. When the support block slides to the left, the locking teeth contact the locking blocks, thereby locking the guide. The rotating component is located on the left side of the support block. The rotating component includes a rotating rod, an upper connecting block, and a lower connecting block. The upper connecting block is hinged to the upper end of the rotating rod, and the lower connecting block is hinged to the lower end of the rotating rod. The upper top surface of the upper connecting block can abut against the bottom of the steel beam, increasing the friction between the upper connecting block and the steel beam. When the steel beam shifts to the left, the support block slides to the left. During the sliding process, the support block contacts and abuts against the lower connecting block, causing the rotating rod to rotate clockwise. At this time, the upper connecting block is lifted up, lifting the entire steel beam upwards, and the left end of the steel beam is lifted.

2. The jacking equipment for steel beam construction according to claim 1, characterized in that, The lifting platform includes a platform and a scissor linkage assembly. The scissor linkage assembly includes two sets of connecting rods that cross each other in an X shape. Each connecting rod end is provided with a limit block. The bottom of the platform has two sets of upper limit grooves, and the upper end of the base has two sets of lower limit grooves. The limit block located at the upper end of the connecting rod is slidably disposed in the upper limit groove, and the limit block located at the lower end of the connecting rod is slidably disposed in the lower limit groove. The two connecting rods in the same set are hinged together with limit pins.

3. The jacking equipment for steel beam construction according to claim 2, characterized in that, The top of the platform has two sliding grooves, one in the front and one in the back. Each groove has two support blocks, one on the left and one on the right. Each support block has a ramp on its left side. The ramp on the left side of the support block is inclined downward from left to right, and the ramp on the right side of the support block is inclined upward from left to right. The angle between the ramp and the horizontal plane is set as A, and the angle of A is between 1 degree and 5 degrees.

4. The jacking equipment for steel beam construction according to claim 2, characterized in that, The base is provided with two guide members, one in the front and one in the rear. The guide members include a vertically arranged mounting plate with a guide groove in the vertical direction. A limit pin is slidably arranged in the guide groove.

5. The jacking equipment for steel beam construction according to claim 1, characterized in that, A rotating shaft is fixedly installed on the rotating rod. The rotating shaft is rotatably mounted on the table. The distance between the rotating shaft and the top of the rotating rod is set as L1, and the distance between the rotating shaft and the bottom of the rotating rod is set as L2. The ratio of the lengths of L1 to L2 is greater than 1:

3. When the support block contacts the lower connecting block, the support block pushes the rotating rod to rotate counterclockwise.

6. The jacking equipment for steel beam construction according to claim 5, characterized in that, The elastic element is a torsion spring, which is sleeved on the rotating shaft. One end of the torsion spring is connected to the rotating shaft, and the other end is connected to the table surface.

7. The jacking equipment for steel beam construction according to claim 3, characterized in that, The ends of the inclined platform furthest from the support block are equipped with alarm devices, which are connected to the hydraulic lifting rod via signal.

8. The jacking equipment for steel beam construction according to claim 4, characterized in that, The locking teeth include a plate and locking teeth. The plate is fixedly mounted on the limiting pin and slides along the guide groove. Multiple locking teeth are evenly distributed along the length of the plate. The mounting plate has a left-right mounting groove. The locking block includes a mounting block, a locking head, and a return spring. The mounting block slides in the mounting groove in the left-right direction. The locking head is fixedly mounted on the left side of the mounting block. The return spring is sleeved on the slider. One end of the return spring abuts against the mounting plate, and the other end is connected to the slider. The locking teeth and the locking head are both right-angled triangles.

9. A method for jacking steel beams during construction, using the jacking equipment for steel beam construction as described in claim 7, characterized in that, Includes the following steps: Step 1: Place the jacking device at the bottom of the steel beam and adjust its position. Lift the steel beam by using the lifting and pushing mechanism, and adjust the front and rear position of the steel beam by using the front and rear pushing mechanism, and adjust the left and right position of the steel beam by using the left and right pushing mechanism. Step 2: If the lifting speed of the lifting pushers placed on the left and right sides of the steel beam differs during the lifting process, causing the steel beam to slide to one side, the support block will slide to that side and rotate the rotating rod. The rotation of the rotating rod will lift the steel beam to prevent it from slipping. Step 3: If there is a significant difference in the lifting height of the lifting pushers placed on the left and right sides of the steel beam, and the steel beam slides to one side to trigger the alarm device, the operator adjusts the lifting height of the lifting pushers on that side to increase the lifting height on that side, so as to avoid a greater difference in the lifting height between the left and right sides due to continuous lifting. Step 4: When the steel beam moves to one side and triggers the alarm device, the support block moves with the steel beam and drives the locking block to engage with the locking teeth, locking the lifting platform to prevent the steel beam from tipping over if the hydraulic lifting rod on that side is damaged when the steel beam slides to one side. Step 5: After the steel beam triggers the alarm device, the operator adjusts the height of the hydraulic lifting rod to make the support block and steel beam slide to the other side, so that the steel beam returns to a horizontal state and thus avoids side slippage. Step six: Adjust the front-to-back direction of the steel beam using the front and rear pushing components, adjust the left-to-right direction of the steel beam using the left and right pushing components, and finally lower the steel beam to the predetermined position using the lifting pushing components.

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