A sliding device and method for bridge construction

Abstract

The present invention relates to the technical field of bridge construction, and specifically discloses a sliding device and method for bridge construction. The sliding device for bridge construction includes a support base, a sliding mechanism, and a jacking mechanism. The jacking mechanism includes a mounting base, an auxiliary jacking member disposed on the mounting base, and a main jacking member. The auxiliary jacking member is elastically connected to the mounting base through an elastic member, and a limiting component is provided between the auxiliary jacking member and the main jacking member. When jacking the bridge segment, under the action of the elastic member, the auxiliary jacking member moves upward and abuts against the bottom of the bridge segment, and the limiting component restricts the relative movement between the auxiliary jacking member and the main jacking member. The main jacking member drives the auxiliary jacking member to jack the bridge segment away from the support base. The sliding device and method for bridge construction of the present invention can adapt to bridge segments with height differences at the bottom, enable the jacking mechanism to synchronously jack the bridge segments, and improve the stability of the bridge segments during the sliding process.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and particularly relates to a sliding device and method for bridge construction. Background Art

[0002] The bridge sliding construction method applies a horizontal thrust to the bridge segment through a sliding device, so that it moves along the slideway or rail to a predetermined position. This method effectively solves the problem of large bridge components in narrow sites or where they cannot be directly hoisted in place.

[0003] Chinese Patent No. CN217974067U discloses a jacking and pushing system for steel beam installation, including jacking cylinders, pushing cylinders, backing plates and two rails. The two rails are arranged on temporary piers at intervals along the length direction of the steel box girder. A sliding seat is slidably connected to the rails along the length direction of the rails. A plurality of jacking cylinders are arranged on the top of the sliding seat. The backing plates are fixedly connected to the plurality of jacking cylinders on the two rails. The pushing cylinders are used to drive the sliding seat to reciprocate along the length direction of the rails. The jacking cylinders are slidably connected to the rails. The pushing cylinders drive the jacking cylinders to slide, and the jacking cylinders move together with the steel box girder. When the above patent jacks and pushes the steel box girder, the two rails are installed on the temporary piers at intervals, and the jacking cylinders are in contact with the bottom of the steel box girder, and then the steel box girder is driven to move by the pushing cylinders and the jacking cylinders.

[0004] However, in the actual implementation process, due to the influence of the terrain where the bridge is located, the bridge needs to avoid other structures, or due to the functional and aesthetic factors of the bridge, the bottom of the bridge steel box girder may have a structure with a height difference. When using the jacking and pushing system in the above patent for jacking and pushing, if the jacking cylinders are synchronously driven to jack the steel box girder, there may be a phenomenon that the tops of some jacking cylinders have already contacted the bottom of the bridge steel box girder, while for the jacking cylinders at the sunken structure of the steel box girder, there is still a large distance between the tops of the jacking cylinders and the bottom of the steel box girder, resulting in uneven stress on the bottom of the steel box girder, and it is easy to cause the bridge line of the steel box girder to shift or even the steel box girder to overturn during the jacking and pushing process.

[0005] Therefore, there is a need in the art for a sliding device and method for bridge construction to solve the above problems. Summary of the Invention

[0006] The present invention provides a sliding device and method for bridge construction, aiming to solve the problem that when the jacking mechanism of the sliding device in the related art jacks a bridge segment with an uneven bottom structure of the beam, it cannot contact the bottom of the bridge segment at the same time, resulting in uneven stress on the bottom of the bridge segment, and it is easy to cause the bridge line to shift or even the bridge segment to overturn.

[0007] On the one hand, the present invention provides a sliding device for bridge construction, which includes a support base, a sliding mechanism arranged on the support base, and a jacking mechanism arranged on the sliding mechanism. The sliding direction of the sliding mechanism is defined as the left - right direction. The jacking mechanism includes a mounting seat, an auxiliary jacking member arranged on the mounting seat, and a main jacking member;

[0008] The auxiliary jacking member is elastically connected to the mounting seat in the vertical direction through an elastic member, and the auxiliary jacking member is slidably matched with the main jacking member in the vertical direction. A limiting component is arranged between the auxiliary jacking member and the main jacking member;

[0009] When the bridge segment is placed on the support base, the limiting component cancels the restriction between the auxiliary jacking member and the main jacking member. Under the elastic force of the elastic member, the auxiliary jacking member moves upward and abuts against the bottom of the bridge segment. By controlling the limiting component to restrict the relative movement between the auxiliary jacking member and the main jacking member, the main jacking member drives the auxiliary jacking member to jack up the bridge segment away from the support base.

[0010] By setting the auxiliary jacking member, when the bottom of the bridge segment has an uneven structure, the elastic member first abuts the auxiliary jacking member against the bottom of the bridge segment, so that the auxiliary jacking members at different positions at the bottom of the bridge segment can all contact the bottom of the bridge segment. Then, the main jacking member and the auxiliary jacking member are connected through the limiting component. Under the jacking of the main jacking member, the jacking mechanisms at different positions can synchronously jack up the bridge segment, making the force on the bottom of the bridge segment balanced. During the subsequent sliding process, the support stability of the jacking mechanism for the bridge segment is improved, and the problems such as bridge line deviation or even overturning that are prone to occur during the sliding of the bridge segment are improved.

[0011] Preferably, the limiting component includes a limiting groove opened on the main jacking member and a limiting block slidably connected to the auxiliary jacking member in the horizontal direction. The limiting grooves are uniformly arranged at intervals in the vertical direction on the main jacking member, and a driving member for driving the limiting block to enter or exit the limiting groove in the horizontal direction is arranged on the auxiliary jacking member.

[0012] Preferably, the main jacking member includes a first hydraulic telescopic cylinder fixedly installed on the mounting seat and a mounting sleeve fixedly connected to the driving end of the first hydraulic telescopic cylinder. The limiting groove is opened on the mounting sleeve.

[0013] Preferably, the auxiliary jacking member includes a jacking sleeve sleeved on the outer periphery of the mounting sleeve. The elastic member is connected between the jacking sleeve and the mounting seat. A receiving groove for receiving the limiting block is opened on the jacking sleeve. When the limiting component cancels the restriction between the jacking sleeve and the mounting sleeve, the limiting block is hidden in the receiving groove.

[0014] When it is necessary to cancel the restriction between the jacking sleeve and the mounting sleeve, the automatic telescopic cylinder 1 drives the limiting block to withdraw from the limiting groove and hide in the receiving groove, ensuring that the jacking sleeve can move smoothly relative to the mounting sleeve.

[0015] Preferably, the driving member includes an automatic telescopic cylinder 1 fixedly installed on the jacking sleeve, the limiting block is fixedly connected to the driving end of the automatic telescopic cylinder 1, and the automatic telescopic cylinder 1 drives the limiting block to enter or withdraw from the limiting groove in the horizontal direction.

[0016] Preferably, a horizontally arranged scraping plate is provided at the top of the jacking sleeve. One end of the scraping plate is elastically connected to the jacking sleeve vertically through an elastic telescopic rod. The elastic telescopic rod is rotatably connected to the jacking sleeve, and a torsion spring is provided at the rotation connection. An avoidance groove is provided at the top of the jacking sleeve. A driving assembly for driving the scraping plate to rotate is provided between the jacking sleeve and the mounting sleeve. When the jacking sleeve moves upward under the elastic force of the elastic member, the scraping plate first abuts against the bottom of the bridge segment. When the driving assembly drives the elastic telescopic rod to drive the scraping plate to rotate and align with the avoidance groove, the elastic member continues to push the jacking sleeve upward to abut against the bridge segment, and the scraping plate falls into the avoidance groove.

[0017] Since there may be bonded concrete blocks at the bottom of the bridge segment, if the concrete block is exactly located at the top of the jacking sleeve, it will affect the support stability between the jacking sleeve and the bottom of the bridge. The impurities at the bottom of the bridge segment are scraped by the scraping plate to ensure the flatness of the bottom of the bridge segment, thereby ensuring the support stability between the jacking sleeve and the bottom of the bridge.

[0018] Preferably, the driving assembly includes a rack fixedly connected to the front side of the mounting sleeve and a gear set arranged in the jacking sleeve. The rack extends vertically. The gear set includes a rotating shaft extending in the left-right direction, transmission gears fixedly connected to both ends of the rotating shaft, and a driving bevel gear. The bottom of the elastic telescopic rod is fixedly connected with a driven bevel gear. The gear set is slidably arranged in the jacking sleeve in the front-rear direction, and the gear set is connected with a driving structure for driving it to move in the front-rear direction. When the jacking sleeve moves upward driven by the elastic member, the driving structure drives the gear set away from the rack. When the mounting sleeve moves upward relative to the jacking sleeve, the driving structure drives the gear set close to the rack. The transmission gear meshes with the rack, and the driven bevel gear meshes with the driving bevel gear.

[0019] The process of driving the installation sleeve to rise by the hydraulic telescopic cylinder 1 is used to drive the scraping plate to rotate, and there is no need to separately set a driving source for the scraping plate.

[0020] Preferably, the driving structure includes a spring and a push rod. The push rod is slidably arranged in the mounting sleeve in the front-rear direction. An automatic telescopic cylinder II for driving the push rod to move is installed in the mounting sleeve. The rotating shaft is rotatably connected to two mounting blocks. The two mounting blocks are slidably matched with the lifting sleeve in the front-rear direction and are elastically connected to the lifting sleeve through the spring. When the automatic telescopic cylinder II drives the push rod to push the rotating shaft forward, the transmission gear on the rotating shaft is disengaged from the rack, and the driving bevel gear is disengaged from the driven bevel gear. When the automatic telescopic cylinder II drives the push rod to move backward and disengage from the rotating shaft, the spring drives the rotating shaft to drive the transmission gear to engage with the rack, and the driven bevel gear engages with the driving bevel gear.

[0021] The contact between the transmission gear and the rack is controlled by the driving structure, avoiding excessive rotation angle of the scraper and also avoiding interference between the rack and the transmission gear with the relative movement between the lifting sleeve and the mounting sleeve.

[0022] Preferably, a collecting plate is vertically arranged on one side of the scraper facing its rotating direction. The collecting plate and the scraper form an L-shaped collecting groove. An elastic rod I is fixedly connected to the scraper. The collecting plate is hinged to the elastic rod I. An elastic rod II is hinged at a position near the top of the scraper. One side of the collecting plate away from the scraper is hinged to the elastic rod II. A pushing block is fixedly connected to the collecting plate. When the scraper enters the avoidance groove, the groove wall of the avoidance groove presses the collecting plate to rotate upward.

[0023] By arranging the collecting plate, it is avoided that the sundries scraped by the scraper fall above the mounting sleeve. Moreover, when the scraper enters the avoidance groove, the groove wall of the avoidance groove presses the collecting plate to rotate upward. After the pushing block contacts the scraper, the top-pushing elastic rod I elongates, forming a gap between the scraper and the collecting plate. The sundries can also fall into the avoidance groove from the gap between the collecting plate and the scraper, achieving the collection of the sundries.

[0024] On the other hand, the present invention also provides a sliding method for bridge construction, using the bridge construction sliding device described in any one of the above preferred technical solutions. The sliding method for bridge construction includes the following steps:

[0025] Step 1: Place the bridge segment on the support seat;

[0026] Step 2: Control the limiting assembly to cancel the limitation between the auxiliary lifting member and the main lifting member. Under the elastic force of the elastic member, the auxiliary lifting member moves upward and abuts against the bottom of the bridge segment;

[0027] Step 3: Control the limiting assembly to restrict the relative movement between the auxiliary lifting member and the active lifting member, and the active lifting member drives the auxiliary lifting member to lift the bridge segment away from the support base;

[0028] Step 4: Control the sliding mechanism to drive the lifting mechanism to drive the bridge segment to move rightward by a preset distance;

[0029] Step 5: Control the active lifting member to drive the auxiliary lifting member to move downward so that the bridge segment is placed on the support base, and control the sliding mechanism to drive the lifting mechanism to move leftward to reset;

[0030] Step 6: Repeat the above Steps 2 to 5 until the bridge segment is moved to the predetermined position.

[0031] The beneficial effects of a sliding method for bridge construction in the present invention are the same as those of a sliding device for bridge construction in the present invention, and will not be elaborated here.

[0032] The beneficial effects of the present invention are as follows: By providing an auxiliary lifting member, when the bottom of the bridge segment has an uneven structure, the elastic member first abuts the auxiliary lifting member against the bottom of the bridge segment, so that the auxiliary lifting members at different positions at the bottom of the bridge segment can all contact the bottom of the bridge segment. Then, the limiting assembly is used to connect the active lifting member and the auxiliary lifting member. Under the lifting of the active lifting member, the lifting mechanisms at different positions can synchronously lift the bridge segment, making the force on the bottom of the bridge segment balanced. During the subsequent sliding process, the support stability of the lifting mechanism for the bridge segment is improved, and the problems of easy bridge line deviation or even overturning during the sliding process of the bridge segment are improved. Description of the Drawings

[0033] Figure 1 is the overall structural schematic diagram of a sliding device for bridge construction in the present invention.

[0034] Figure 2 is the front view of the sliding mechanism and the lifting mechanism of a sliding device for bridge construction in the present invention.

[0035] Figure 3 is Figure 2 the sectional view of the middle section A - A.

[0036] Figure 4 is the front view of the active lifting member of a sliding device for bridge construction in the present invention.

[0037] Figure 5 is the sectional view of the auxiliary lifting member of a sliding device for bridge construction in the present invention.

[0038] Figure 6It is a cross-sectional view of the active lifting member and the auxiliary lifting member of a sliding device for bridge construction according to the present invention.

[0039] Figure 7 It is an assembly schematic diagram among the mounting sleeve, the drive assembly and the scraper of a sliding device for bridge construction according to the present invention.

[0040] Figure 8 It is a schematic diagram of the scraper of a sliding device for bridge construction according to the present invention.

[0041] Reference numerals:

[0042] 1, support base; 2, mounting base; 3, elastic member; 4, second hydraulic telescopic cylinder; 5, guide base; 6, first hydraulic telescopic cylinder; 61, mounting sleeve; 611, rack; 612, top push rod; 613, second automatic telescopic cylinder; 62, limit groove; 7, lifting sleeve; 71, limit block; 72, first automatic telescopic cylinder; 73, receiving groove; 74, avoidance groove; 75, rotating shaft; 76, transmission gear; 77, driving bevel gear; 78, mounting block; 79, spring; 8, scraper; 81, elastic telescopic rod; 82, driven bevel gear; 83, first elastic rod; 84, second elastic rod; 9, collecting plate; 91, top push block; 10, sundry collecting box. Detailed description of the specific implementation

[0043] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0044] As Figures 1 to 8 shown, a sliding device for bridge construction according to the present invention includes a support base 1, a sliding mechanism disposed on the support base 1, and a lifting mechanism disposed on the sliding mechanism. The sliding direction of the sliding mechanism is defined as the left-right direction. The lifting mechanism includes a mounting base 2, an auxiliary lifting member disposed on the mounting base 2, and an active lifting member. The auxiliary lifting member is elastically connected to the mounting base 2 in the vertical direction through an elastic member 3, and the auxiliary lifting member is slidably engaged with the active lifting member in the vertical direction. A limiting component is disposed between the auxiliary lifting member and the active lifting member.

[0045] The sliding mechanism includes a second hydraulic telescopic cylinder 4 and a guide base 5 fixedly connected to the support base 1. The mounting base 2 is slidably connected to the guide base 5 in the left-right direction. The second hydraulic telescopic cylinder 4 extends in the left-right direction and is fixedly installed on the mounting base 2. The driving end of the second hydraulic telescopic cylinder 4 is fixedly connected to the guide base 5.

[0046] When the bridge segment is placed on the support base 1, the limiting component cancels the restriction between the auxiliary jacking member and the active jacking member. Under the elastic force of the elastic member 3, the auxiliary jacking member will move upward and abut against the bottom of the bridge segment. If the bottom of the bridge segment has an uneven structure, the auxiliary jacking members at different positions on the bottom of the bridge segment will be pushed by the elastic member 3 and all come into contact with the bottom of the bridge segment. By controlling the limiting component to restrict the relative movement between the auxiliary jacking member and the active jacking member, when the active jacking member jacks up, the active jacking member will drive the auxiliary jacking member to jack up synchronously through the limiting component, so that the jacking mechanisms at different positions can jack up the bridge segment synchronously, making the force on the bottom of the bridge segment balanced. During the subsequent sliding process, the support stability of the jacking mechanism for the bridge segment is improved, and the problems of bridge line deviation or even overturning that are prone to occur during the sliding process of the bridge segment are improved.

[0047] As Figure 3 and Figure 4 shown, the active jacking member includes a hydraulic telescopic cylinder 6 fixedly installed on the mounting base 2 and a mounting sleeve 61 fixedly connected to the driving end of the hydraulic telescopic cylinder 6. The mounting sleeve 61 is a square sleeve. The auxiliary jacking member includes a jacking sleeve 7 sleeved on the outer periphery of the mounting sleeve 61. The inner side wall of the jacking sleeve 7 is attached to the outer side wall of the mounting sleeve 61. The mounting sleeve 61 guides the movement of the jacking sleeve 7, so that the jacking sleeve 7 can only move vertically and maintain a horizontal state. The elastic member 3 is connected between the jacking sleeve 7 and the mounting base 2. As an example, the elastic member 3 is an elastic telescopic rod, and the two ends of the elastic telescopic rod are respectively connected to the jacking sleeve 7 and the mounting base 2.

[0048] As Figures 4 to 6 shown, the limiting component includes a limiting groove 62 opened on the mounting sleeve 61 and a limiting block 71 slidably connected to the jacking sleeve 7 in the horizontal direction. The limiting grooves 62 are uniformly arranged at intervals in the vertical direction on the mounting sleeve 61, and three limiting blocks 71 are arranged at intervals in the vertical direction. A driving member for driving the limiting block 71 to enter or exit the limiting groove 62 in the horizontal direction is provided on the jacking sleeve 7. The driving member includes an automatic telescopic cylinder 72 fixedly installed on the jacking sleeve 7. As an example, the automatic telescopic cylinder 72 is an electric telescopic cylinder.

[0049] The lifting sleeve 7 is provided with a receiving groove 73 for receiving the limiting block 71. When it is necessary to cancel the restriction between the lifting sleeve 7 and the mounting sleeve 61, the automatic telescopic cylinder 72 drives the limiting block 71 to withdraw from the limiting groove 62 and hide in the receiving groove 73, ensuring that the lifting sleeve 7 can move smoothly relative to the mounting sleeve 61. When it is necessary to restrict the relative movement between the lifting sleeve 7 and the mounting sleeve 61, the automatic telescopic cylinder 72 is controlled to drive the limiting block 71 to move outwards along the receiving groove 73 and into the corresponding limiting groove 62, so that part of the structure of the limiting block 71 is located in the receiving groove 73 and part of the structure is located in the limiting groove 62, thereby restricting the movement between the lifting sleeve 7 and the mounting sleeve 61 and ensuring that the active lifting member can drive the auxiliary lifting member to move synchronously.

[0050] As Figure 1 , Figure 3 , Figures 6 to 8 shown, since there may be bonded concrete blocks at the bottom of the bridge segment, if the concrete block is exactly located at the top of the lifting sleeve 7, it will affect the support stability between the lifting sleeve 7 and the bottom of the bridge. Therefore, in this embodiment, a horizontally arranged scraping plate 8 is provided at a position near the right side of the top of the lifting sleeve 7, and the scraping plate 8 extends in the front-rear direction. The front end of the scraping plate 8 is fixedly connected with an elastic telescopic rod 81 extending vertically. The elastic telescopic rod 81 is rotatably connected inside the lifting sleeve 7, and a torsion spring (not shown in the figure) is provided at the rotation connection. When the torsion spring is in a natural state, the scraping plate 8 is in a position extending in the front-rear direction. An avoidance groove 74 is provided at a position near the front side of the top of the lifting sleeve 7, and a photoelectric switch is provided in the avoidance groove 74. A driving assembly for driving the scraping plate 8 to rotate is provided between the lifting sleeve 7 and the mounting sleeve 61.

[0051] When the lifting sleeve 7 moves upward under the elastic force of the elastic member 3, the scraping plate 8 first abuts against the bottom of the bridge segment. The driving assembly is controlled to drive the elastic telescopic rod 81 to drive the scraping plate 8 to rotate counterclockwise (where the counterclockwise direction is referenced by the top view of the lifting sleeve 7), so that the scraping plate 8 scrapes the impurities at the bottom of the bridge segment, ensuring the flatness of the bottom of the bridge segment. When the scraping plate 8 rotates to align with the avoidance groove 74, the photoelectric switch is activated, causing the driving assembly to stop driving, and the elastic member 3 continues to push the lifting sleeve 7 upward until it abuts against the bridge segment, and the scraping plate 8 falls into the avoidance groove 74.

[0052] The driving assembly includes a rack 611 fixedly connected to the front side of the mounting sleeve 61 and a gear set disposed in the lifting sleeve 7. The rack 611 extends vertically. The gear set includes a rotating shaft 75 extending in the left-right direction, driving gears 76 fixedly connected to both ends of the rotating shaft 75, and a driving bevel gear 77. The bottom of the elastic telescopic rod 81 is fixedly connected with a driven bevel gear 82. The gear set is slidably arranged in the lifting sleeve 7 in the front-rear direction, and the gear set is connected with a driving structure for driving it to move in the front-rear direction. The driving structure includes a spring 79 and a push rod 612. The push rod 612 is slidably arranged in the mounting sleeve 61 in the front-rear direction. An automatic telescopic cylinder two 613 for driving the push rod 612 to move is installed in the mounting sleeve 61. The rotating shaft 75 is rotatably connected to two mounting blocks 78. The two mounting blocks 78 are slidably matched with the lifting sleeve 7 in the front-rear direction and are elastically connected to the lifting sleeve 7 through the spring 79. As an example, the automatic telescopic cylinder two 613 is an electric telescopic cylinder.

[0053] When the automatic telescopic cylinder two 613 drives the push rod 612 to push the rotating shaft 75 forward, the driving gear 76 on the rotating shaft 75 is disengaged from the rack 611, and the driving bevel gear 77 is disengaged from the driven bevel gear 82. When the automatic telescopic cylinder two 613 drives the push rod 612 to move backward and disengage from the rotating shaft 75, the spring 79 drives the rotating shaft 75 to drive the driving gear 76 to mesh with the rack 611, and the driven bevel gear 82 meshes with the driving bevel gear 77.

[0054] When the limiting component cancels the limitation between the auxiliary lifting member and the active lifting member and the lifting sleeve 7 moves upward under the drive of the elastic member 3, the push rod 612 is in the state of pushing the rotating shaft 75, so that the gear set is in a position away from the rack 611. When it is necessary to drive the scraper 8 to rotate to scrape the sundries at the bottom of the bridge segment, control the automatic telescopic cylinder two 613 to drive the push rod 612 to move backward and disengage from the rotating shaft 75, so that the driving gear 76 meshes with the rack 611, and the driven bevel gear 82 meshes with the driving bevel gear 77. At the same time, control the hydraulic telescopic cylinder one 6 to extend upward. The rack 611 on the mounting sleeve 61 drives the driving gear 76 to rotate. The driving gear 76 drives the driving bevel gear 77 to rotate through the rotating shaft 75. The driving bevel gear 77 drives the elastic telescopic rod 81 to drive the scraper 8 to rotate through the driven bevel gear 82.

[0055] When the scraper 8 rotates above the avoidance groove 74, the photoelectric switch is activated, and the automatic telescopic cylinder two 613 is controlled to drive the push rod 612 to push the rotating shaft 75 forward, so that the driving gear 76 is disengaged from the rack 611, and the driving bevel gear 77 is disengaged from the driven bevel gear 82, so as to realize the smooth upward movement of the lifting sleeve 7 under the elastic force of the elastic member 3, hide the scraper 8 in the avoidance groove 74, and at the same time, it will not affect the continuous upward extension of the hydraulic telescopic cylinder one 6.

[0056] Continue to refer to Figure 1 、Figure 3 and Figure 8 To prevent the sundries scraped off by the scraper 8 from falling above the mounting sleeve 61, in this embodiment, a collecting plate 9 is vertically arranged on one side of the scraper 8 facing its rotation direction. The collecting plate 9 and the scraper 8 form an L-shaped collecting groove. An elastic rod 83 is fixedly connected to the scraper 8. The collecting plate 9 is hinged to the elastic rod 83. An elastic rod 84 is hinged to the scraper 8 near the top. The side of the collecting plate 9 away from the scraper 8 is hinged to the elastic rod 84. A pushing block 91 is fixedly connected to the collecting plate 9. When the scraper 8 enters the avoidance groove 74, the groove wall of the avoidance groove 74 presses the collecting plate 9 to rotate upward. The pushing block 91 contacts the scraper 8 and pulls the elastic rod 83 to elongate, so as to form a gap between the collecting plate 9 and the scraper 8, and the sundries in the L-shaped collecting groove fall into the avoidance groove 74. A material dropping port (not shown in the figure) is arranged on the front side of the avoidance groove 74. A sundries collecting box 10 is arranged at the material dropping port. The sundries entering the avoidance groove 74 roll into the sundries collecting box 10 from the material dropping port.

[0057] A sliding method for bridge construction, using the sliding device for bridge construction in the above embodiment, the sliding method for bridge construction includes the following steps:

[0058] Step 1: Place the bridge segment on the support seat 1;

[0059] Step 2: Control the automatic telescopic cylinder 72 to drive the limiting block 71 to withdraw from the limiting groove 62 and hide in the accommodating groove 73, cancel the restriction between the jacking sleeve 7 and the mounting sleeve 61. Under the elastic force of the elastic member 3, the jacking sleeve 7 moves upward to abut the scraper 8 against the bottom of the bridge segment. Control the automatic telescopic cylinder 613 to drive the push rod 612 to move backward and disengage from the rotating shaft 75, so that the driving gear 76 meshes with the rack 611, and the driven bevel gear 82 meshes with the driving bevel gear 77. At the same time, control the hydraulic telescopic cylinder 6 to extend upward. The rack 611 on the mounting sleeve 61 drives the driving gear 76 to rotate. The driving gear 76 drives the driving bevel gear 77 to rotate through the rotating shaft 75. The driving bevel gear 77 drives the elastic telescopic rod 81 to drive the scraper 8 to rotate through the driven bevel gear 82. The scraper 8 scrapes the impurities at the bottom of the bridge segment. When the scraper 8 rotates above the avoidance groove 74, the photoelectric switch is started. Control the automatic telescopic cylinder 613 to drive the push rod 612 to push the rotating shaft 75 forward, so that the driving gear 76 disengages from the rack 611, and the driving bevel gear 77 disengages from the driven bevel gear 82. The jacking sleeve 7 smoothly moves upward under the elastic force of the elastic member 3 and abuts against the bottom of the bridge segment, and the scraper 8 hides in the avoidance groove 74;

[0060] Step 3: During the continuous upward extension of the first hydraulic telescopic cylinder 6, control the first automatic telescopic cylinder 72 to drive the limit block 71 to move outward along the receiving groove 73 and enter the relative limit groove 62, restricting the relative movement between the mounting sleeve 61 and the jacking sleeve 7. The first hydraulic telescopic cylinder 6 jacks up the bridge segment away from the support base 1 through the mounting sleeve 61 and the jacking sleeve 7.

[0061] Step 4: Control the second hydraulic telescopic cylinder 4 to drive the mounting base 2 to move rightward along the guide base 5 by a preset distance. The auxiliary jacking member and the active jacking member on the mounting base 2 drive the bridge segment to move rightward by a preset distance.

[0062] Step 5: Control the first hydraulic telescopic cylinder 6 to retract downward. The first hydraulic telescopic cylinder 6 drives the mounting sleeve 61 and the jacking sleeve 7 to move downward synchronously, placing the bridge segment on the support base 1. During the downward movement of the jacking sleeve 7, the scraper 8 disengages from the avoidance groove 74 under the elastic force of the elastic telescopic rod 81 and automatically rotates to the initial state under the action of the torsion spring. After the jacking mechanism is completely disengaged from the bridge segment, control the second hydraulic telescopic cylinder 4 to drive the mounting base 2 to move leftward along the guide base 5 to reset.

[0063] Step 6: Repeat the above Steps 2 to 5 until the bridge segment is moved to the predetermined position.

[0064] It should be noted that when the bottom of the bridge segment is a plane of the same height, when the first hydraulic telescopic cylinder 6 rises to the mounting sleeve 61 contacting the bottom of the bridge segment, the first automatic telescopic cylinder 72 drives the limit block 71 to quickly insert into the limit groove 62 to limit the position between the mounting sleeve 61 and the jacking sleeve 7. During the continuous upward movement of the first hydraulic telescopic cylinder 6, the mounting sleeve 61 and the jacking sleeve 7 jointly jack up the bridge segment.

[0065] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A sliding device for bridge construction, comprising a support seat, a sliding mechanism arranged on the support seat, and a jacking mechanism arranged on the sliding mechanism, wherein the sliding direction of the sliding mechanism is defined as a left-right direction, and characterized in that: The lifting mechanism comprises a mounting seat, an auxiliary lifting member and an active lifting member arranged on the mounting seat; The auxiliary lifting member is elastically connected to the mounting seat in the vertical direction through an elastic member, and the auxiliary lifting member is slidably matched with the active lifting member in the vertical direction, and a limit position component is arranged between the auxiliary lifting member and the active lifting member; When the bridge segment is placed on the support seat, the limit assembly cancels the restriction between the auxiliary lifting member and the active lifting member. Under the elastic force of the elastic member, the auxiliary lifting member moves upward and abuts against the bottom of the bridge segment. The limit assembly is controlled to limit the relative movement between the auxiliary lifting member and the active lifting member. The active lifting member drives the auxiliary lifting member to lift the bridge segment away from the support seat. The limiting assembly comprises a limiting groove provided on the active lifting member and a limiting block slidably connected to the auxiliary lifting member in the horizontal direction, the limiting grooves are evenly arranged on the active lifting member in the vertical direction, and the auxiliary lifting member is provided with a driving member for driving the limiting block to enter or exit the limiting groove in the horizontal direction; The active lifting member comprises a hydraulic telescopic cylinder 1 fixedly mounted on a mounting seat and a mounting sleeve fixedly connected to a driving end of the hydraulic telescopic cylinder 1, and a limit groove is provided on the mounting sleeve; The auxiliary lifting member includes a lifting sleeve sleeved on the outer periphery of the mounting sleeve, an elastic member connected between the lifting sleeve and the mounting seat, and a receiving groove for receiving the limit block is provided on the lifting sleeve. When the limit assembly cancels the restriction between the lifting sleeve and the mounting sleeve, the limit block is hidden in the receiving groove; The driving member comprises an automatic telescopic cylinder 1 fixedly mounted on the lifting sleeve, and the limit block is fixedly connected to the driving end of the automatic telescopic cylinder 1; A horizontally arranged scraper is provided on the top of the jacking sleeve, one end of the scraper is elastically connected to the jacking sleeve along the vertical direction through an elastic telescopic rod, the elastic telescopic rod is rotatably connected to the jacking sleeve, and a torsion spring is provided at the rotating connection, an avoidance groove is provided on the top of the jacking sleeve, and a driving component for driving the scraper to rotate is provided between the jacking sleeve and the mounting sleeve.

2. The sliding device for bridge construction according to claim 1, characterized in that: The automatic telescopic cylinder 1 drives the limit block to enter or exit the limit groove along the horizontal direction.

3. The sliding device for bridge construction according to claim 1, characterized in that: When the lifting sleeve moves upward under the elastic force of the elastic member, the scraper first abuts against the bottom of the bridge segment. When the driving assembly drives the elastic telescopic rod to drive the scraper to rotate to align with the avoidance groove, the elastic member continues to push the lifting sleeve upward to abut against the bridge segment, and the scraper falls into the avoidance groove.

4. The sliding device for bridge construction according to claim 3, characterized in that: The driving assembly includes a rack fixedly connected to the front side of the mounting sleeve and a gear set arranged in the lifting sleeve, the rack extends vertically, the gear set includes a rotating shaft extending in the left and right directions, a transmission gear fixedly connected to both ends of the rotating shaft and an active bevel gear, the bottom of the elastic telescopic rod is fixedly connected with a driven bevel gear, the gear set is slidably arranged in the lifting sleeve along the front and rear directions, and the gear set is connected to a driving structure that drives it to move in the front and rear directions, when the lifting sleeve moves upward under the drive of the elastic member, the driving structure drives the gear set away from the rack, and when the mounting sleeve moves upward relative to the lifting sleeve, the driving structure drives the gear set close to the rack, the transmission gear is meshed with the rack, and the driven bevel gear is meshed with the active bevel gear.

5. The sliding device for bridge construction according to claim 4, characterized in that: The driving structure includes a spring and a push rod, the push rod is slidably arranged on the mounting sleeve along the front-back direction, and an automatic telescopic cylinder 2 is installed in the mounting sleeve to drive the push rod to move, the rotating shaft is rotatably connected to the two mounting blocks, the two mounting blocks are slidably matched with the lifting sleeve along the front-back direction, and are elastically connected to the lifting sleeve through the spring, when the automatic telescopic cylinder 2 drives the push rod to push the rotating shaft forward, the transmission gear on the rotating shaft is disengaged from the rack, and the active bevel gear is disengaged from the driven bevel gear, and when the automatic telescopic cylinder 2 drives the push rod to move backward and disengage from the rotating shaft, the spring drives the rotating shaft to drive the transmission gear to mesh with the rack, and the driven bevel gear is meshed with the active bevel gear.

6. The sliding device for bridge construction according to claim 3, characterized in that: A collecting plate is vertically arranged on one side of the scraper facing its rotation direction, and the collecting plate and the scraper form an L-shaped collecting groove. An elastic rod 1 is fixedly connected to the scraper, and the collecting plate is hinged to the elastic rod 1. An elastic rod 2 is hinged to the position of the scraper near the top, and the collecting plate is hinged to the elastic rod 2 on the side away from the scraper. A pushing block is fixedly connected to the collecting plate, and when the scraper enters the avoidance groove, the groove wall of the avoidance groove squeezes the collecting plate to rotate upward.

7. A sliding method for bridge construction, characterized in that: Using the sliding device for bridge construction according to any one of claims 1 to 6, the sliding method for bridge construction comprises the following steps: Step 1: placing the bridge segment on the support seat; Step 2: Control the limit assembly to cancel the restriction between the auxiliary lifting member and the active lifting member, so that the auxiliary lifting member moves upward and abuts against the bottom of the bridge segment under the elastic force of the elastic member; Step 3: Control the limit assembly to limit the relative movement between the auxiliary lifting member and the active lifting member, and the active lifting member drives the auxiliary lifting member to lift the bridge segment away from the support seat; Step 4: Control the sliding mechanism to drive the lifting mechanism to drive the bridge segment to move rightward by a preset distance; Step 5: Control the active lifting member to drive the auxiliary lifting member to move downward, so that the bridge segment is placed on the support seat, and control the sliding mechanism to drive the lifting mechanism to move to the left and reset; Step 6: Repeat steps 2 to 5 until the bridge segment is moved to the predetermined position.

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